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1/*
2 * linux/drivers/video/omap2/dss/dispc.c
3 *
4 * Copyright (C) 2009 Nokia Corporation
5 * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
6 *
7 * Some code and ideas taken from drivers/video/omap/ driver
8 * by Imre Deak.
9 *
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License version 2 as published by
12 * the Free Software Foundation.
13 *
14 * This program is distributed in the hope that it will be useful, but WITHOUT
15 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 * more details.
18 *
19 * You should have received a copy of the GNU General Public License along with
20 * this program. If not, see <http://www.gnu.org/licenses/>.
21 */
22
23#define DSS_SUBSYS_NAME "DISPC"
24
25#include <linux/kernel.h>
26#include <linux/dma-mapping.h>
27#include <linux/vmalloc.h>
28#include <linux/export.h>
29#include <linux/clk.h>
30#include <linux/io.h>
31#include <linux/jiffies.h>
32#include <linux/seq_file.h>
33#include <linux/delay.h>
34#include <linux/workqueue.h>
35#include <linux/hardirq.h>
36#include <linux/platform_device.h>
37#include <linux/pm_runtime.h>
38#include <linux/sizes.h>
39#include <linux/mfd/syscon.h>
40#include <linux/regmap.h>
41#include <linux/of.h>
42#include <linux/component.h>
43
44#include <video/omapdss.h>
45
46#include "dss.h"
47#include "dss_features.h"
48#include "dispc.h"
49
50/* DISPC */
51#define DISPC_SZ_REGS SZ_4K
52
53enum omap_burst_size {
54 BURST_SIZE_X2 = 0,
55 BURST_SIZE_X4 = 1,
56 BURST_SIZE_X8 = 2,
57};
58
59#define REG_GET(idx, start, end) \
60 FLD_GET(dispc_read_reg(idx), start, end)
61
62#define REG_FLD_MOD(idx, val, start, end) \
63 dispc_write_reg(idx, FLD_MOD(dispc_read_reg(idx), val, start, end))
64
65struct dispc_features {
66 u8 sw_start;
67 u8 fp_start;
68 u8 bp_start;
69 u16 sw_max;
70 u16 vp_max;
71 u16 hp_max;
72 u8 mgr_width_start;
73 u8 mgr_height_start;
74 u16 mgr_width_max;
75 u16 mgr_height_max;
76 unsigned long max_lcd_pclk;
77 unsigned long max_tv_pclk;
78 int (*calc_scaling) (unsigned long pclk, unsigned long lclk,
79 const struct omap_video_timings *mgr_timings,
80 u16 width, u16 height, u16 out_width, u16 out_height,
81 enum omap_color_mode color_mode, bool *five_taps,
82 int *x_predecim, int *y_predecim, int *decim_x, int *decim_y,
83 u16 pos_x, unsigned long *core_clk, bool mem_to_mem);
84 unsigned long (*calc_core_clk) (unsigned long pclk,
85 u16 width, u16 height, u16 out_width, u16 out_height,
86 bool mem_to_mem);
87 u8 num_fifos;
88
89 /* swap GFX & WB fifos */
90 bool gfx_fifo_workaround:1;
91
92 /* no DISPC_IRQ_FRAMEDONETV on this SoC */
93 bool no_framedone_tv:1;
94
95 /* revert to the OMAP4 mechanism of DISPC Smart Standby operation */
96 bool mstandby_workaround:1;
97
98 bool set_max_preload:1;
99
100 /* PIXEL_INC is not added to the last pixel of a line */
101 bool last_pixel_inc_missing:1;
102
103 /* POL_FREQ has ALIGN bit */
104 bool supports_sync_align:1;
105
106 bool has_writeback:1;
107
108 bool supports_double_pixel:1;
109
110 /*
111 * Field order for VENC is different than HDMI. We should handle this in
112 * some intelligent manner, but as the SoCs have either HDMI or VENC,
113 * never both, we can just use this flag for now.
114 */
115 bool reverse_ilace_field_order:1;
116};
117
118#define DISPC_MAX_NR_FIFOS 5
119
120static struct {
121 struct platform_device *pdev;
122 void __iomem *base;
123
124 int irq;
125 irq_handler_t user_handler;
126 void *user_data;
127
128 unsigned long core_clk_rate;
129 unsigned long tv_pclk_rate;
130
131 u32 fifo_size[DISPC_MAX_NR_FIFOS];
132 /* maps which plane is using a fifo. fifo-id -> plane-id */
133 int fifo_assignment[DISPC_MAX_NR_FIFOS];
134
135 bool ctx_valid;
136 u32 ctx[DISPC_SZ_REGS / sizeof(u32)];
137
138 const struct dispc_features *feat;
139
140 bool is_enabled;
141
142 struct regmap *syscon_pol;
143 u32 syscon_pol_offset;
144
145 /* DISPC_CONTROL & DISPC_CONFIG lock*/
146 spinlock_t control_lock;
147} dispc;
148
149enum omap_color_component {
150 /* used for all color formats for OMAP3 and earlier
151 * and for RGB and Y color component on OMAP4
152 */
153 DISPC_COLOR_COMPONENT_RGB_Y = 1 << 0,
154 /* used for UV component for
155 * OMAP_DSS_COLOR_YUV2, OMAP_DSS_COLOR_UYVY, OMAP_DSS_COLOR_NV12
156 * color formats on OMAP4
157 */
158 DISPC_COLOR_COMPONENT_UV = 1 << 1,
159};
160
161enum mgr_reg_fields {
162 DISPC_MGR_FLD_ENABLE,
163 DISPC_MGR_FLD_STNTFT,
164 DISPC_MGR_FLD_GO,
165 DISPC_MGR_FLD_TFTDATALINES,
166 DISPC_MGR_FLD_STALLMODE,
167 DISPC_MGR_FLD_TCKENABLE,
168 DISPC_MGR_FLD_TCKSELECTION,
169 DISPC_MGR_FLD_CPR,
170 DISPC_MGR_FLD_FIFOHANDCHECK,
171 /* used to maintain a count of the above fields */
172 DISPC_MGR_FLD_NUM,
173};
174
175struct dispc_reg_field {
176 u16 reg;
177 u8 high;
178 u8 low;
179};
180
181static const struct {
182 const char *name;
183 u32 vsync_irq;
184 u32 framedone_irq;
185 u32 sync_lost_irq;
186 struct dispc_reg_field reg_desc[DISPC_MGR_FLD_NUM];
187} mgr_desc[] = {
188 [OMAP_DSS_CHANNEL_LCD] = {
189 .name = "LCD",
190 .vsync_irq = DISPC_IRQ_VSYNC,
191 .framedone_irq = DISPC_IRQ_FRAMEDONE,
192 .sync_lost_irq = DISPC_IRQ_SYNC_LOST,
193 .reg_desc = {
194 [DISPC_MGR_FLD_ENABLE] = { DISPC_CONTROL, 0, 0 },
195 [DISPC_MGR_FLD_STNTFT] = { DISPC_CONTROL, 3, 3 },
196 [DISPC_MGR_FLD_GO] = { DISPC_CONTROL, 5, 5 },
197 [DISPC_MGR_FLD_TFTDATALINES] = { DISPC_CONTROL, 9, 8 },
198 [DISPC_MGR_FLD_STALLMODE] = { DISPC_CONTROL, 11, 11 },
199 [DISPC_MGR_FLD_TCKENABLE] = { DISPC_CONFIG, 10, 10 },
200 [DISPC_MGR_FLD_TCKSELECTION] = { DISPC_CONFIG, 11, 11 },
201 [DISPC_MGR_FLD_CPR] = { DISPC_CONFIG, 15, 15 },
202 [DISPC_MGR_FLD_FIFOHANDCHECK] = { DISPC_CONFIG, 16, 16 },
203 },
204 },
205 [OMAP_DSS_CHANNEL_DIGIT] = {
206 .name = "DIGIT",
207 .vsync_irq = DISPC_IRQ_EVSYNC_ODD | DISPC_IRQ_EVSYNC_EVEN,
208 .framedone_irq = DISPC_IRQ_FRAMEDONETV,
209 .sync_lost_irq = DISPC_IRQ_SYNC_LOST_DIGIT,
210 .reg_desc = {
211 [DISPC_MGR_FLD_ENABLE] = { DISPC_CONTROL, 1, 1 },
212 [DISPC_MGR_FLD_STNTFT] = { },
213 [DISPC_MGR_FLD_GO] = { DISPC_CONTROL, 6, 6 },
214 [DISPC_MGR_FLD_TFTDATALINES] = { },
215 [DISPC_MGR_FLD_STALLMODE] = { },
216 [DISPC_MGR_FLD_TCKENABLE] = { DISPC_CONFIG, 12, 12 },
217 [DISPC_MGR_FLD_TCKSELECTION] = { DISPC_CONFIG, 13, 13 },
218 [DISPC_MGR_FLD_CPR] = { },
219 [DISPC_MGR_FLD_FIFOHANDCHECK] = { DISPC_CONFIG, 16, 16 },
220 },
221 },
222 [OMAP_DSS_CHANNEL_LCD2] = {
223 .name = "LCD2",
224 .vsync_irq = DISPC_IRQ_VSYNC2,
225 .framedone_irq = DISPC_IRQ_FRAMEDONE2,
226 .sync_lost_irq = DISPC_IRQ_SYNC_LOST2,
227 .reg_desc = {
228 [DISPC_MGR_FLD_ENABLE] = { DISPC_CONTROL2, 0, 0 },
229 [DISPC_MGR_FLD_STNTFT] = { DISPC_CONTROL2, 3, 3 },
230 [DISPC_MGR_FLD_GO] = { DISPC_CONTROL2, 5, 5 },
231 [DISPC_MGR_FLD_TFTDATALINES] = { DISPC_CONTROL2, 9, 8 },
232 [DISPC_MGR_FLD_STALLMODE] = { DISPC_CONTROL2, 11, 11 },
233 [DISPC_MGR_FLD_TCKENABLE] = { DISPC_CONFIG2, 10, 10 },
234 [DISPC_MGR_FLD_TCKSELECTION] = { DISPC_CONFIG2, 11, 11 },
235 [DISPC_MGR_FLD_CPR] = { DISPC_CONFIG2, 15, 15 },
236 [DISPC_MGR_FLD_FIFOHANDCHECK] = { DISPC_CONFIG2, 16, 16 },
237 },
238 },
239 [OMAP_DSS_CHANNEL_LCD3] = {
240 .name = "LCD3",
241 .vsync_irq = DISPC_IRQ_VSYNC3,
242 .framedone_irq = DISPC_IRQ_FRAMEDONE3,
243 .sync_lost_irq = DISPC_IRQ_SYNC_LOST3,
244 .reg_desc = {
245 [DISPC_MGR_FLD_ENABLE] = { DISPC_CONTROL3, 0, 0 },
246 [DISPC_MGR_FLD_STNTFT] = { DISPC_CONTROL3, 3, 3 },
247 [DISPC_MGR_FLD_GO] = { DISPC_CONTROL3, 5, 5 },
248 [DISPC_MGR_FLD_TFTDATALINES] = { DISPC_CONTROL3, 9, 8 },
249 [DISPC_MGR_FLD_STALLMODE] = { DISPC_CONTROL3, 11, 11 },
250 [DISPC_MGR_FLD_TCKENABLE] = { DISPC_CONFIG3, 10, 10 },
251 [DISPC_MGR_FLD_TCKSELECTION] = { DISPC_CONFIG3, 11, 11 },
252 [DISPC_MGR_FLD_CPR] = { DISPC_CONFIG3, 15, 15 },
253 [DISPC_MGR_FLD_FIFOHANDCHECK] = { DISPC_CONFIG3, 16, 16 },
254 },
255 },
256};
257
258struct color_conv_coef {
259 int ry, rcr, rcb, gy, gcr, gcb, by, bcr, bcb;
260 int full_range;
261};
262
263static unsigned long dispc_fclk_rate(void);
264static unsigned long dispc_core_clk_rate(void);
265static unsigned long dispc_mgr_lclk_rate(enum omap_channel channel);
266static unsigned long dispc_mgr_pclk_rate(enum omap_channel channel);
267
268static unsigned long dispc_plane_pclk_rate(enum omap_plane plane);
269static unsigned long dispc_plane_lclk_rate(enum omap_plane plane);
270
271static inline void dispc_write_reg(const u16 idx, u32 val)
272{
273 __raw_writel(val, dispc.base + idx);
274}
275
276static inline u32 dispc_read_reg(const u16 idx)
277{
278 return __raw_readl(dispc.base + idx);
279}
280
281static u32 mgr_fld_read(enum omap_channel channel, enum mgr_reg_fields regfld)
282{
283 const struct dispc_reg_field rfld = mgr_desc[channel].reg_desc[regfld];
284 return REG_GET(rfld.reg, rfld.high, rfld.low);
285}
286
287static void mgr_fld_write(enum omap_channel channel,
288 enum mgr_reg_fields regfld, int val) {
289 const struct dispc_reg_field rfld = mgr_desc[channel].reg_desc[regfld];
290 const bool need_lock = rfld.reg == DISPC_CONTROL || rfld.reg == DISPC_CONFIG;
291 unsigned long flags;
292
293 if (need_lock)
294 spin_lock_irqsave(&dispc.control_lock, flags);
295
296 REG_FLD_MOD(rfld.reg, val, rfld.high, rfld.low);
297
298 if (need_lock)
299 spin_unlock_irqrestore(&dispc.control_lock, flags);
300}
301
302#define SR(reg) \
303 dispc.ctx[DISPC_##reg / sizeof(u32)] = dispc_read_reg(DISPC_##reg)
304#define RR(reg) \
305 dispc_write_reg(DISPC_##reg, dispc.ctx[DISPC_##reg / sizeof(u32)])
306
307static void dispc_save_context(void)
308{
309 int i, j;
310
311 DSSDBG("dispc_save_context\n");
312
313 SR(IRQENABLE);
314 SR(CONTROL);
315 SR(CONFIG);
316 SR(LINE_NUMBER);
317 if (dss_has_feature(FEAT_ALPHA_FIXED_ZORDER) ||
318 dss_has_feature(FEAT_ALPHA_FREE_ZORDER))
319 SR(GLOBAL_ALPHA);
320 if (dss_has_feature(FEAT_MGR_LCD2)) {
321 SR(CONTROL2);
322 SR(CONFIG2);
323 }
324 if (dss_has_feature(FEAT_MGR_LCD3)) {
325 SR(CONTROL3);
326 SR(CONFIG3);
327 }
328
329 for (i = 0; i < dss_feat_get_num_mgrs(); i++) {
330 SR(DEFAULT_COLOR(i));
331 SR(TRANS_COLOR(i));
332 SR(SIZE_MGR(i));
333 if (i == OMAP_DSS_CHANNEL_DIGIT)
334 continue;
335 SR(TIMING_H(i));
336 SR(TIMING_V(i));
337 SR(POL_FREQ(i));
338 SR(DIVISORo(i));
339
340 SR(DATA_CYCLE1(i));
341 SR(DATA_CYCLE2(i));
342 SR(DATA_CYCLE3(i));
343
344 if (dss_has_feature(FEAT_CPR)) {
345 SR(CPR_COEF_R(i));
346 SR(CPR_COEF_G(i));
347 SR(CPR_COEF_B(i));
348 }
349 }
350
351 for (i = 0; i < dss_feat_get_num_ovls(); i++) {
352 SR(OVL_BA0(i));
353 SR(OVL_BA1(i));
354 SR(OVL_POSITION(i));
355 SR(OVL_SIZE(i));
356 SR(OVL_ATTRIBUTES(i));
357 SR(OVL_FIFO_THRESHOLD(i));
358 SR(OVL_ROW_INC(i));
359 SR(OVL_PIXEL_INC(i));
360 if (dss_has_feature(FEAT_PRELOAD))
361 SR(OVL_PRELOAD(i));
362 if (i == OMAP_DSS_GFX) {
363 SR(OVL_WINDOW_SKIP(i));
364 SR(OVL_TABLE_BA(i));
365 continue;
366 }
367 SR(OVL_FIR(i));
368 SR(OVL_PICTURE_SIZE(i));
369 SR(OVL_ACCU0(i));
370 SR(OVL_ACCU1(i));
371
372 for (j = 0; j < 8; j++)
373 SR(OVL_FIR_COEF_H(i, j));
374
375 for (j = 0; j < 8; j++)
376 SR(OVL_FIR_COEF_HV(i, j));
377
378 for (j = 0; j < 5; j++)
379 SR(OVL_CONV_COEF(i, j));
380
381 if (dss_has_feature(FEAT_FIR_COEF_V)) {
382 for (j = 0; j < 8; j++)
383 SR(OVL_FIR_COEF_V(i, j));
384 }
385
386 if (dss_has_feature(FEAT_HANDLE_UV_SEPARATE)) {
387 SR(OVL_BA0_UV(i));
388 SR(OVL_BA1_UV(i));
389 SR(OVL_FIR2(i));
390 SR(OVL_ACCU2_0(i));
391 SR(OVL_ACCU2_1(i));
392
393 for (j = 0; j < 8; j++)
394 SR(OVL_FIR_COEF_H2(i, j));
395
396 for (j = 0; j < 8; j++)
397 SR(OVL_FIR_COEF_HV2(i, j));
398
399 for (j = 0; j < 8; j++)
400 SR(OVL_FIR_COEF_V2(i, j));
401 }
402 if (dss_has_feature(FEAT_ATTR2))
403 SR(OVL_ATTRIBUTES2(i));
404 }
405
406 if (dss_has_feature(FEAT_CORE_CLK_DIV))
407 SR(DIVISOR);
408
409 dispc.ctx_valid = true;
410
411 DSSDBG("context saved\n");
412}
413
414static void dispc_restore_context(void)
415{
416 int i, j;
417
418 DSSDBG("dispc_restore_context\n");
419
420 if (!dispc.ctx_valid)
421 return;
422
423 /*RR(IRQENABLE);*/
424 /*RR(CONTROL);*/
425 RR(CONFIG);
426 RR(LINE_NUMBER);
427 if (dss_has_feature(FEAT_ALPHA_FIXED_ZORDER) ||
428 dss_has_feature(FEAT_ALPHA_FREE_ZORDER))
429 RR(GLOBAL_ALPHA);
430 if (dss_has_feature(FEAT_MGR_LCD2))
431 RR(CONFIG2);
432 if (dss_has_feature(FEAT_MGR_LCD3))
433 RR(CONFIG3);
434
435 for (i = 0; i < dss_feat_get_num_mgrs(); i++) {
436 RR(DEFAULT_COLOR(i));
437 RR(TRANS_COLOR(i));
438 RR(SIZE_MGR(i));
439 if (i == OMAP_DSS_CHANNEL_DIGIT)
440 continue;
441 RR(TIMING_H(i));
442 RR(TIMING_V(i));
443 RR(POL_FREQ(i));
444 RR(DIVISORo(i));
445
446 RR(DATA_CYCLE1(i));
447 RR(DATA_CYCLE2(i));
448 RR(DATA_CYCLE3(i));
449
450 if (dss_has_feature(FEAT_CPR)) {
451 RR(CPR_COEF_R(i));
452 RR(CPR_COEF_G(i));
453 RR(CPR_COEF_B(i));
454 }
455 }
456
457 for (i = 0; i < dss_feat_get_num_ovls(); i++) {
458 RR(OVL_BA0(i));
459 RR(OVL_BA1(i));
460 RR(OVL_POSITION(i));
461 RR(OVL_SIZE(i));
462 RR(OVL_ATTRIBUTES(i));
463 RR(OVL_FIFO_THRESHOLD(i));
464 RR(OVL_ROW_INC(i));
465 RR(OVL_PIXEL_INC(i));
466 if (dss_has_feature(FEAT_PRELOAD))
467 RR(OVL_PRELOAD(i));
468 if (i == OMAP_DSS_GFX) {
469 RR(OVL_WINDOW_SKIP(i));
470 RR(OVL_TABLE_BA(i));
471 continue;
472 }
473 RR(OVL_FIR(i));
474 RR(OVL_PICTURE_SIZE(i));
475 RR(OVL_ACCU0(i));
476 RR(OVL_ACCU1(i));
477
478 for (j = 0; j < 8; j++)
479 RR(OVL_FIR_COEF_H(i, j));
480
481 for (j = 0; j < 8; j++)
482 RR(OVL_FIR_COEF_HV(i, j));
483
484 for (j = 0; j < 5; j++)
485 RR(OVL_CONV_COEF(i, j));
486
487 if (dss_has_feature(FEAT_FIR_COEF_V)) {
488 for (j = 0; j < 8; j++)
489 RR(OVL_FIR_COEF_V(i, j));
490 }
491
492 if (dss_has_feature(FEAT_HANDLE_UV_SEPARATE)) {
493 RR(OVL_BA0_UV(i));
494 RR(OVL_BA1_UV(i));
495 RR(OVL_FIR2(i));
496 RR(OVL_ACCU2_0(i));
497 RR(OVL_ACCU2_1(i));
498
499 for (j = 0; j < 8; j++)
500 RR(OVL_FIR_COEF_H2(i, j));
501
502 for (j = 0; j < 8; j++)
503 RR(OVL_FIR_COEF_HV2(i, j));
504
505 for (j = 0; j < 8; j++)
506 RR(OVL_FIR_COEF_V2(i, j));
507 }
508 if (dss_has_feature(FEAT_ATTR2))
509 RR(OVL_ATTRIBUTES2(i));
510 }
511
512 if (dss_has_feature(FEAT_CORE_CLK_DIV))
513 RR(DIVISOR);
514
515 /* enable last, because LCD & DIGIT enable are here */
516 RR(CONTROL);
517 if (dss_has_feature(FEAT_MGR_LCD2))
518 RR(CONTROL2);
519 if (dss_has_feature(FEAT_MGR_LCD3))
520 RR(CONTROL3);
521 /* clear spurious SYNC_LOST_DIGIT interrupts */
522 dispc_clear_irqstatus(DISPC_IRQ_SYNC_LOST_DIGIT);
523
524 /*
525 * enable last so IRQs won't trigger before
526 * the context is fully restored
527 */
528 RR(IRQENABLE);
529
530 DSSDBG("context restored\n");
531}
532
533#undef SR
534#undef RR
535
536int dispc_runtime_get(void)
537{
538 int r;
539
540 DSSDBG("dispc_runtime_get\n");
541
542 r = pm_runtime_get_sync(&dispc.pdev->dev);
543 WARN_ON(r < 0);
544 return r < 0 ? r : 0;
545}
546EXPORT_SYMBOL(dispc_runtime_get);
547
548void dispc_runtime_put(void)
549{
550 int r;
551
552 DSSDBG("dispc_runtime_put\n");
553
554 r = pm_runtime_put_sync(&dispc.pdev->dev);
555 WARN_ON(r < 0 && r != -ENOSYS);
556}
557EXPORT_SYMBOL(dispc_runtime_put);
558
559u32 dispc_mgr_get_vsync_irq(enum omap_channel channel)
560{
561 return mgr_desc[channel].vsync_irq;
562}
563EXPORT_SYMBOL(dispc_mgr_get_vsync_irq);
564
565u32 dispc_mgr_get_framedone_irq(enum omap_channel channel)
566{
567 if (channel == OMAP_DSS_CHANNEL_DIGIT && dispc.feat->no_framedone_tv)
568 return 0;
569
570 return mgr_desc[channel].framedone_irq;
571}
572EXPORT_SYMBOL(dispc_mgr_get_framedone_irq);
573
574u32 dispc_mgr_get_sync_lost_irq(enum omap_channel channel)
575{
576 return mgr_desc[channel].sync_lost_irq;
577}
578EXPORT_SYMBOL(dispc_mgr_get_sync_lost_irq);
579
580u32 dispc_wb_get_framedone_irq(void)
581{
582 return DISPC_IRQ_FRAMEDONEWB;
583}
584
585bool dispc_mgr_go_busy(enum omap_channel channel)
586{
587 return mgr_fld_read(channel, DISPC_MGR_FLD_GO) == 1;
588}
589EXPORT_SYMBOL(dispc_mgr_go_busy);
590
591void dispc_mgr_go(enum omap_channel channel)
592{
593 WARN_ON(!dispc_mgr_is_enabled(channel));
594 WARN_ON(dispc_mgr_go_busy(channel));
595
596 DSSDBG("GO %s\n", mgr_desc[channel].name);
597
598 mgr_fld_write(channel, DISPC_MGR_FLD_GO, 1);
599}
600EXPORT_SYMBOL(dispc_mgr_go);
601
602bool dispc_wb_go_busy(void)
603{
604 return REG_GET(DISPC_CONTROL2, 6, 6) == 1;
605}
606
607void dispc_wb_go(void)
608{
609 enum omap_plane plane = OMAP_DSS_WB;
610 bool enable, go;
611
612 enable = REG_GET(DISPC_OVL_ATTRIBUTES(plane), 0, 0) == 1;
613
614 if (!enable)
615 return;
616
617 go = REG_GET(DISPC_CONTROL2, 6, 6) == 1;
618 if (go) {
619 DSSERR("GO bit not down for WB\n");
620 return;
621 }
622
623 REG_FLD_MOD(DISPC_CONTROL2, 1, 6, 6);
624}
625
626static void dispc_ovl_write_firh_reg(enum omap_plane plane, int reg, u32 value)
627{
628 dispc_write_reg(DISPC_OVL_FIR_COEF_H(plane, reg), value);
629}
630
631static void dispc_ovl_write_firhv_reg(enum omap_plane plane, int reg, u32 value)
632{
633 dispc_write_reg(DISPC_OVL_FIR_COEF_HV(plane, reg), value);
634}
635
636static void dispc_ovl_write_firv_reg(enum omap_plane plane, int reg, u32 value)
637{
638 dispc_write_reg(DISPC_OVL_FIR_COEF_V(plane, reg), value);
639}
640
641static void dispc_ovl_write_firh2_reg(enum omap_plane plane, int reg, u32 value)
642{
643 BUG_ON(plane == OMAP_DSS_GFX);
644
645 dispc_write_reg(DISPC_OVL_FIR_COEF_H2(plane, reg), value);
646}
647
648static void dispc_ovl_write_firhv2_reg(enum omap_plane plane, int reg,
649 u32 value)
650{
651 BUG_ON(plane == OMAP_DSS_GFX);
652
653 dispc_write_reg(DISPC_OVL_FIR_COEF_HV2(plane, reg), value);
654}
655
656static void dispc_ovl_write_firv2_reg(enum omap_plane plane, int reg, u32 value)
657{
658 BUG_ON(plane == OMAP_DSS_GFX);
659
660 dispc_write_reg(DISPC_OVL_FIR_COEF_V2(plane, reg), value);
661}
662
663static void dispc_ovl_set_scale_coef(enum omap_plane plane, int fir_hinc,
664 int fir_vinc, int five_taps,
665 enum omap_color_component color_comp)
666{
667 const struct dispc_coef *h_coef, *v_coef;
668 int i;
669
670 h_coef = dispc_ovl_get_scale_coef(fir_hinc, true);
671 v_coef = dispc_ovl_get_scale_coef(fir_vinc, five_taps);
672
673 for (i = 0; i < 8; i++) {
674 u32 h, hv;
675
676 h = FLD_VAL(h_coef[i].hc0_vc00, 7, 0)
677 | FLD_VAL(h_coef[i].hc1_vc0, 15, 8)
678 | FLD_VAL(h_coef[i].hc2_vc1, 23, 16)
679 | FLD_VAL(h_coef[i].hc3_vc2, 31, 24);
680 hv = FLD_VAL(h_coef[i].hc4_vc22, 7, 0)
681 | FLD_VAL(v_coef[i].hc1_vc0, 15, 8)
682 | FLD_VAL(v_coef[i].hc2_vc1, 23, 16)
683 | FLD_VAL(v_coef[i].hc3_vc2, 31, 24);
684
685 if (color_comp == DISPC_COLOR_COMPONENT_RGB_Y) {
686 dispc_ovl_write_firh_reg(plane, i, h);
687 dispc_ovl_write_firhv_reg(plane, i, hv);
688 } else {
689 dispc_ovl_write_firh2_reg(plane, i, h);
690 dispc_ovl_write_firhv2_reg(plane, i, hv);
691 }
692
693 }
694
695 if (five_taps) {
696 for (i = 0; i < 8; i++) {
697 u32 v;
698 v = FLD_VAL(v_coef[i].hc0_vc00, 7, 0)
699 | FLD_VAL(v_coef[i].hc4_vc22, 15, 8);
700 if (color_comp == DISPC_COLOR_COMPONENT_RGB_Y)
701 dispc_ovl_write_firv_reg(plane, i, v);
702 else
703 dispc_ovl_write_firv2_reg(plane, i, v);
704 }
705 }
706}
707
708
709static void dispc_ovl_write_color_conv_coef(enum omap_plane plane,
710 const struct color_conv_coef *ct)
711{
712#define CVAL(x, y) (FLD_VAL(x, 26, 16) | FLD_VAL(y, 10, 0))
713
714 dispc_write_reg(DISPC_OVL_CONV_COEF(plane, 0), CVAL(ct->rcr, ct->ry));
715 dispc_write_reg(DISPC_OVL_CONV_COEF(plane, 1), CVAL(ct->gy, ct->rcb));
716 dispc_write_reg(DISPC_OVL_CONV_COEF(plane, 2), CVAL(ct->gcb, ct->gcr));
717 dispc_write_reg(DISPC_OVL_CONV_COEF(plane, 3), CVAL(ct->bcr, ct->by));
718 dispc_write_reg(DISPC_OVL_CONV_COEF(plane, 4), CVAL(0, ct->bcb));
719
720 REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), ct->full_range, 11, 11);
721
722#undef CVAL
723}
724
725static void dispc_setup_color_conv_coef(void)
726{
727 int i;
728 int num_ovl = dss_feat_get_num_ovls();
729 const struct color_conv_coef ctbl_bt601_5_ovl = {
730 /* YUV -> RGB */
731 298, 409, 0, 298, -208, -100, 298, 0, 517, 0,
732 };
733 const struct color_conv_coef ctbl_bt601_5_wb = {
734 /* RGB -> YUV */
735 66, 129, 25, 112, -94, -18, -38, -74, 112, 0,
736 };
737
738 for (i = 1; i < num_ovl; i++)
739 dispc_ovl_write_color_conv_coef(i, &ctbl_bt601_5_ovl);
740
741 if (dispc.feat->has_writeback)
742 dispc_ovl_write_color_conv_coef(OMAP_DSS_WB, &ctbl_bt601_5_wb);
743}
744
745static void dispc_ovl_set_ba0(enum omap_plane plane, u32 paddr)
746{
747 dispc_write_reg(DISPC_OVL_BA0(plane), paddr);
748}
749
750static void dispc_ovl_set_ba1(enum omap_plane plane, u32 paddr)
751{
752 dispc_write_reg(DISPC_OVL_BA1(plane), paddr);
753}
754
755static void dispc_ovl_set_ba0_uv(enum omap_plane plane, u32 paddr)
756{
757 dispc_write_reg(DISPC_OVL_BA0_UV(plane), paddr);
758}
759
760static void dispc_ovl_set_ba1_uv(enum omap_plane plane, u32 paddr)
761{
762 dispc_write_reg(DISPC_OVL_BA1_UV(plane), paddr);
763}
764
765static void dispc_ovl_set_pos(enum omap_plane plane,
766 enum omap_overlay_caps caps, int x, int y)
767{
768 u32 val;
769
770 if ((caps & OMAP_DSS_OVL_CAP_POS) == 0)
771 return;
772
773 val = FLD_VAL(y, 26, 16) | FLD_VAL(x, 10, 0);
774
775 dispc_write_reg(DISPC_OVL_POSITION(plane), val);
776}
777
778static void dispc_ovl_set_input_size(enum omap_plane plane, int width,
779 int height)
780{
781 u32 val = FLD_VAL(height - 1, 26, 16) | FLD_VAL(width - 1, 10, 0);
782
783 if (plane == OMAP_DSS_GFX || plane == OMAP_DSS_WB)
784 dispc_write_reg(DISPC_OVL_SIZE(plane), val);
785 else
786 dispc_write_reg(DISPC_OVL_PICTURE_SIZE(plane), val);
787}
788
789static void dispc_ovl_set_output_size(enum omap_plane plane, int width,
790 int height)
791{
792 u32 val;
793
794 BUG_ON(plane == OMAP_DSS_GFX);
795
796 val = FLD_VAL(height - 1, 26, 16) | FLD_VAL(width - 1, 10, 0);
797
798 if (plane == OMAP_DSS_WB)
799 dispc_write_reg(DISPC_OVL_PICTURE_SIZE(plane), val);
800 else
801 dispc_write_reg(DISPC_OVL_SIZE(plane), val);
802}
803
804static void dispc_ovl_set_zorder(enum omap_plane plane,
805 enum omap_overlay_caps caps, u8 zorder)
806{
807 if ((caps & OMAP_DSS_OVL_CAP_ZORDER) == 0)
808 return;
809
810 REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), zorder, 27, 26);
811}
812
813static void dispc_ovl_enable_zorder_planes(void)
814{
815 int i;
816
817 if (!dss_has_feature(FEAT_ALPHA_FREE_ZORDER))
818 return;
819
820 for (i = 0; i < dss_feat_get_num_ovls(); i++)
821 REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(i), 1, 25, 25);
822}
823
824static void dispc_ovl_set_pre_mult_alpha(enum omap_plane plane,
825 enum omap_overlay_caps caps, bool enable)
826{
827 if ((caps & OMAP_DSS_OVL_CAP_PRE_MULT_ALPHA) == 0)
828 return;
829
830 REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), enable ? 1 : 0, 28, 28);
831}
832
833static void dispc_ovl_setup_global_alpha(enum omap_plane plane,
834 enum omap_overlay_caps caps, u8 global_alpha)
835{
836 static const unsigned shifts[] = { 0, 8, 16, 24, };
837 int shift;
838
839 if ((caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
840 return;
841
842 shift = shifts[plane];
843 REG_FLD_MOD(DISPC_GLOBAL_ALPHA, global_alpha, shift + 7, shift);
844}
845
846static void dispc_ovl_set_pix_inc(enum omap_plane plane, s32 inc)
847{
848 dispc_write_reg(DISPC_OVL_PIXEL_INC(plane), inc);
849}
850
851static void dispc_ovl_set_row_inc(enum omap_plane plane, s32 inc)
852{
853 dispc_write_reg(DISPC_OVL_ROW_INC(plane), inc);
854}
855
856static void dispc_ovl_set_color_mode(enum omap_plane plane,
857 enum omap_color_mode color_mode)
858{
859 u32 m = 0;
860 if (plane != OMAP_DSS_GFX) {
861 switch (color_mode) {
862 case OMAP_DSS_COLOR_NV12:
863 m = 0x0; break;
864 case OMAP_DSS_COLOR_RGBX16:
865 m = 0x1; break;
866 case OMAP_DSS_COLOR_RGBA16:
867 m = 0x2; break;
868 case OMAP_DSS_COLOR_RGB12U:
869 m = 0x4; break;
870 case OMAP_DSS_COLOR_ARGB16:
871 m = 0x5; break;
872 case OMAP_DSS_COLOR_RGB16:
873 m = 0x6; break;
874 case OMAP_DSS_COLOR_ARGB16_1555:
875 m = 0x7; break;
876 case OMAP_DSS_COLOR_RGB24U:
877 m = 0x8; break;
878 case OMAP_DSS_COLOR_RGB24P:
879 m = 0x9; break;
880 case OMAP_DSS_COLOR_YUV2:
881 m = 0xa; break;
882 case OMAP_DSS_COLOR_UYVY:
883 m = 0xb; break;
884 case OMAP_DSS_COLOR_ARGB32:
885 m = 0xc; break;
886 case OMAP_DSS_COLOR_RGBA32:
887 m = 0xd; break;
888 case OMAP_DSS_COLOR_RGBX32:
889 m = 0xe; break;
890 case OMAP_DSS_COLOR_XRGB16_1555:
891 m = 0xf; break;
892 default:
893 BUG(); return;
894 }
895 } else {
896 switch (color_mode) {
897 case OMAP_DSS_COLOR_CLUT1:
898 m = 0x0; break;
899 case OMAP_DSS_COLOR_CLUT2:
900 m = 0x1; break;
901 case OMAP_DSS_COLOR_CLUT4:
902 m = 0x2; break;
903 case OMAP_DSS_COLOR_CLUT8:
904 m = 0x3; break;
905 case OMAP_DSS_COLOR_RGB12U:
906 m = 0x4; break;
907 case OMAP_DSS_COLOR_ARGB16:
908 m = 0x5; break;
909 case OMAP_DSS_COLOR_RGB16:
910 m = 0x6; break;
911 case OMAP_DSS_COLOR_ARGB16_1555:
912 m = 0x7; break;
913 case OMAP_DSS_COLOR_RGB24U:
914 m = 0x8; break;
915 case OMAP_DSS_COLOR_RGB24P:
916 m = 0x9; break;
917 case OMAP_DSS_COLOR_RGBX16:
918 m = 0xa; break;
919 case OMAP_DSS_COLOR_RGBA16:
920 m = 0xb; break;
921 case OMAP_DSS_COLOR_ARGB32:
922 m = 0xc; break;
923 case OMAP_DSS_COLOR_RGBA32:
924 m = 0xd; break;
925 case OMAP_DSS_COLOR_RGBX32:
926 m = 0xe; break;
927 case OMAP_DSS_COLOR_XRGB16_1555:
928 m = 0xf; break;
929 default:
930 BUG(); return;
931 }
932 }
933
934 REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), m, 4, 1);
935}
936
937static void dispc_ovl_configure_burst_type(enum omap_plane plane,
938 enum omap_dss_rotation_type rotation_type)
939{
940 if (dss_has_feature(FEAT_BURST_2D) == 0)
941 return;
942
943 if (rotation_type == OMAP_DSS_ROT_TILER)
944 REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), 1, 29, 29);
945 else
946 REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), 0, 29, 29);
947}
948
949void dispc_ovl_set_channel_out(enum omap_plane plane, enum omap_channel channel)
950{
951 int shift;
952 u32 val;
953 int chan = 0, chan2 = 0;
954
955 switch (plane) {
956 case OMAP_DSS_GFX:
957 shift = 8;
958 break;
959 case OMAP_DSS_VIDEO1:
960 case OMAP_DSS_VIDEO2:
961 case OMAP_DSS_VIDEO3:
962 shift = 16;
963 break;
964 default:
965 BUG();
966 return;
967 }
968
969 val = dispc_read_reg(DISPC_OVL_ATTRIBUTES(plane));
970 if (dss_has_feature(FEAT_MGR_LCD2)) {
971 switch (channel) {
972 case OMAP_DSS_CHANNEL_LCD:
973 chan = 0;
974 chan2 = 0;
975 break;
976 case OMAP_DSS_CHANNEL_DIGIT:
977 chan = 1;
978 chan2 = 0;
979 break;
980 case OMAP_DSS_CHANNEL_LCD2:
981 chan = 0;
982 chan2 = 1;
983 break;
984 case OMAP_DSS_CHANNEL_LCD3:
985 if (dss_has_feature(FEAT_MGR_LCD3)) {
986 chan = 0;
987 chan2 = 2;
988 } else {
989 BUG();
990 return;
991 }
992 break;
993 case OMAP_DSS_CHANNEL_WB:
994 chan = 0;
995 chan2 = 3;
996 break;
997 default:
998 BUG();
999 return;
1000 }
1001
1002 val = FLD_MOD(val, chan, shift, shift);
1003 val = FLD_MOD(val, chan2, 31, 30);
1004 } else {
1005 val = FLD_MOD(val, channel, shift, shift);
1006 }
1007 dispc_write_reg(DISPC_OVL_ATTRIBUTES(plane), val);
1008}
1009EXPORT_SYMBOL(dispc_ovl_set_channel_out);
1010
1011static enum omap_channel dispc_ovl_get_channel_out(enum omap_plane plane)
1012{
1013 int shift;
1014 u32 val;
1015
1016 switch (plane) {
1017 case OMAP_DSS_GFX:
1018 shift = 8;
1019 break;
1020 case OMAP_DSS_VIDEO1:
1021 case OMAP_DSS_VIDEO2:
1022 case OMAP_DSS_VIDEO3:
1023 shift = 16;
1024 break;
1025 default:
1026 BUG();
1027 return 0;
1028 }
1029
1030 val = dispc_read_reg(DISPC_OVL_ATTRIBUTES(plane));
1031
1032 if (FLD_GET(val, shift, shift) == 1)
1033 return OMAP_DSS_CHANNEL_DIGIT;
1034
1035 if (!dss_has_feature(FEAT_MGR_LCD2))
1036 return OMAP_DSS_CHANNEL_LCD;
1037
1038 switch (FLD_GET(val, 31, 30)) {
1039 case 0:
1040 default:
1041 return OMAP_DSS_CHANNEL_LCD;
1042 case 1:
1043 return OMAP_DSS_CHANNEL_LCD2;
1044 case 2:
1045 return OMAP_DSS_CHANNEL_LCD3;
1046 case 3:
1047 return OMAP_DSS_CHANNEL_WB;
1048 }
1049}
1050
1051void dispc_wb_set_channel_in(enum dss_writeback_channel channel)
1052{
1053 enum omap_plane plane = OMAP_DSS_WB;
1054
1055 REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), channel, 18, 16);
1056}
1057
1058static void dispc_ovl_set_burst_size(enum omap_plane plane,
1059 enum omap_burst_size burst_size)
1060{
1061 static const unsigned shifts[] = { 6, 14, 14, 14, 14, };
1062 int shift;
1063
1064 shift = shifts[plane];
1065 REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), burst_size, shift + 1, shift);
1066}
1067
1068static void dispc_configure_burst_sizes(void)
1069{
1070 int i;
1071 const int burst_size = BURST_SIZE_X8;
1072
1073 /* Configure burst size always to maximum size */
1074 for (i = 0; i < dss_feat_get_num_ovls(); ++i)
1075 dispc_ovl_set_burst_size(i, burst_size);
1076 if (dispc.feat->has_writeback)
1077 dispc_ovl_set_burst_size(OMAP_DSS_WB, burst_size);
1078}
1079
1080static u32 dispc_ovl_get_burst_size(enum omap_plane plane)
1081{
1082 unsigned unit = dss_feat_get_burst_size_unit();
1083 /* burst multiplier is always x8 (see dispc_configure_burst_sizes()) */
1084 return unit * 8;
1085}
1086
1087void dispc_enable_gamma_table(bool enable)
1088{
1089 /*
1090 * This is partially implemented to support only disabling of
1091 * the gamma table.
1092 */
1093 if (enable) {
1094 DSSWARN("Gamma table enabling for TV not yet supported");
1095 return;
1096 }
1097
1098 REG_FLD_MOD(DISPC_CONFIG, enable, 9, 9);
1099}
1100
1101static void dispc_mgr_enable_cpr(enum omap_channel channel, bool enable)
1102{
1103 if (channel == OMAP_DSS_CHANNEL_DIGIT)
1104 return;
1105
1106 mgr_fld_write(channel, DISPC_MGR_FLD_CPR, enable);
1107}
1108
1109static void dispc_mgr_set_cpr_coef(enum omap_channel channel,
1110 const struct omap_dss_cpr_coefs *coefs)
1111{
1112 u32 coef_r, coef_g, coef_b;
1113
1114 if (!dss_mgr_is_lcd(channel))
1115 return;
1116
1117 coef_r = FLD_VAL(coefs->rr, 31, 22) | FLD_VAL(coefs->rg, 20, 11) |
1118 FLD_VAL(coefs->rb, 9, 0);
1119 coef_g = FLD_VAL(coefs->gr, 31, 22) | FLD_VAL(coefs->gg, 20, 11) |
1120 FLD_VAL(coefs->gb, 9, 0);
1121 coef_b = FLD_VAL(coefs->br, 31, 22) | FLD_VAL(coefs->bg, 20, 11) |
1122 FLD_VAL(coefs->bb, 9, 0);
1123
1124 dispc_write_reg(DISPC_CPR_COEF_R(channel), coef_r);
1125 dispc_write_reg(DISPC_CPR_COEF_G(channel), coef_g);
1126 dispc_write_reg(DISPC_CPR_COEF_B(channel), coef_b);
1127}
1128
1129static void dispc_ovl_set_vid_color_conv(enum omap_plane plane, bool enable)
1130{
1131 u32 val;
1132
1133 BUG_ON(plane == OMAP_DSS_GFX);
1134
1135 val = dispc_read_reg(DISPC_OVL_ATTRIBUTES(plane));
1136 val = FLD_MOD(val, enable, 9, 9);
1137 dispc_write_reg(DISPC_OVL_ATTRIBUTES(plane), val);
1138}
1139
1140static void dispc_ovl_enable_replication(enum omap_plane plane,
1141 enum omap_overlay_caps caps, bool enable)
1142{
1143 static const unsigned shifts[] = { 5, 10, 10, 10 };
1144 int shift;
1145
1146 if ((caps & OMAP_DSS_OVL_CAP_REPLICATION) == 0)
1147 return;
1148
1149 shift = shifts[plane];
1150 REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), enable, shift, shift);
1151}
1152
1153static void dispc_mgr_set_size(enum omap_channel channel, u16 width,
1154 u16 height)
1155{
1156 u32 val;
1157
1158 val = FLD_VAL(height - 1, dispc.feat->mgr_height_start, 16) |
1159 FLD_VAL(width - 1, dispc.feat->mgr_width_start, 0);
1160
1161 dispc_write_reg(DISPC_SIZE_MGR(channel), val);
1162}
1163
1164static void dispc_init_fifos(void)
1165{
1166 u32 size;
1167 int fifo;
1168 u8 start, end;
1169 u32 unit;
1170 int i;
1171
1172 unit = dss_feat_get_buffer_size_unit();
1173
1174 dss_feat_get_reg_field(FEAT_REG_FIFOSIZE, &start, &end);
1175
1176 for (fifo = 0; fifo < dispc.feat->num_fifos; ++fifo) {
1177 size = REG_GET(DISPC_OVL_FIFO_SIZE_STATUS(fifo), start, end);
1178 size *= unit;
1179 dispc.fifo_size[fifo] = size;
1180
1181 /*
1182 * By default fifos are mapped directly to overlays, fifo 0 to
1183 * ovl 0, fifo 1 to ovl 1, etc.
1184 */
1185 dispc.fifo_assignment[fifo] = fifo;
1186 }
1187
1188 /*
1189 * The GFX fifo on OMAP4 is smaller than the other fifos. The small fifo
1190 * causes problems with certain use cases, like using the tiler in 2D
1191 * mode. The below hack swaps the fifos of GFX and WB planes, thus
1192 * giving GFX plane a larger fifo. WB but should work fine with a
1193 * smaller fifo.
1194 */
1195 if (dispc.feat->gfx_fifo_workaround) {
1196 u32 v;
1197
1198 v = dispc_read_reg(DISPC_GLOBAL_BUFFER);
1199
1200 v = FLD_MOD(v, 4, 2, 0); /* GFX BUF top to WB */
1201 v = FLD_MOD(v, 4, 5, 3); /* GFX BUF bottom to WB */
1202 v = FLD_MOD(v, 0, 26, 24); /* WB BUF top to GFX */
1203 v = FLD_MOD(v, 0, 29, 27); /* WB BUF bottom to GFX */
1204
1205 dispc_write_reg(DISPC_GLOBAL_BUFFER, v);
1206
1207 dispc.fifo_assignment[OMAP_DSS_GFX] = OMAP_DSS_WB;
1208 dispc.fifo_assignment[OMAP_DSS_WB] = OMAP_DSS_GFX;
1209 }
1210
1211 /*
1212 * Setup default fifo thresholds.
1213 */
1214 for (i = 0; i < dss_feat_get_num_ovls(); ++i) {
1215 u32 low, high;
1216 const bool use_fifomerge = false;
1217 const bool manual_update = false;
1218
1219 dispc_ovl_compute_fifo_thresholds(i, &low, &high,
1220 use_fifomerge, manual_update);
1221
1222 dispc_ovl_set_fifo_threshold(i, low, high);
1223 }
1224
1225 if (dispc.feat->has_writeback) {
1226 u32 low, high;
1227 const bool use_fifomerge = false;
1228 const bool manual_update = false;
1229
1230 dispc_ovl_compute_fifo_thresholds(OMAP_DSS_WB, &low, &high,
1231 use_fifomerge, manual_update);
1232
1233 dispc_ovl_set_fifo_threshold(OMAP_DSS_WB, low, high);
1234 }
1235}
1236
1237static u32 dispc_ovl_get_fifo_size(enum omap_plane plane)
1238{
1239 int fifo;
1240 u32 size = 0;
1241
1242 for (fifo = 0; fifo < dispc.feat->num_fifos; ++fifo) {
1243 if (dispc.fifo_assignment[fifo] == plane)
1244 size += dispc.fifo_size[fifo];
1245 }
1246
1247 return size;
1248}
1249
1250void dispc_ovl_set_fifo_threshold(enum omap_plane plane, u32 low, u32 high)
1251{
1252 u8 hi_start, hi_end, lo_start, lo_end;
1253 u32 unit;
1254
1255 unit = dss_feat_get_buffer_size_unit();
1256
1257 WARN_ON(low % unit != 0);
1258 WARN_ON(high % unit != 0);
1259
1260 low /= unit;
1261 high /= unit;
1262
1263 dss_feat_get_reg_field(FEAT_REG_FIFOHIGHTHRESHOLD, &hi_start, &hi_end);
1264 dss_feat_get_reg_field(FEAT_REG_FIFOLOWTHRESHOLD, &lo_start, &lo_end);
1265
1266 DSSDBG("fifo(%d) threshold (bytes), old %u/%u, new %u/%u\n",
1267 plane,
1268 REG_GET(DISPC_OVL_FIFO_THRESHOLD(plane),
1269 lo_start, lo_end) * unit,
1270 REG_GET(DISPC_OVL_FIFO_THRESHOLD(plane),
1271 hi_start, hi_end) * unit,
1272 low * unit, high * unit);
1273
1274 dispc_write_reg(DISPC_OVL_FIFO_THRESHOLD(plane),
1275 FLD_VAL(high, hi_start, hi_end) |
1276 FLD_VAL(low, lo_start, lo_end));
1277
1278 /*
1279 * configure the preload to the pipeline's high threhold, if HT it's too
1280 * large for the preload field, set the threshold to the maximum value
1281 * that can be held by the preload register
1282 */
1283 if (dss_has_feature(FEAT_PRELOAD) && dispc.feat->set_max_preload &&
1284 plane != OMAP_DSS_WB)
1285 dispc_write_reg(DISPC_OVL_PRELOAD(plane), min(high, 0xfffu));
1286}
1287
1288void dispc_enable_fifomerge(bool enable)
1289{
1290 if (!dss_has_feature(FEAT_FIFO_MERGE)) {
1291 WARN_ON(enable);
1292 return;
1293 }
1294
1295 DSSDBG("FIFO merge %s\n", enable ? "enabled" : "disabled");
1296 REG_FLD_MOD(DISPC_CONFIG, enable ? 1 : 0, 14, 14);
1297}
1298
1299void dispc_ovl_compute_fifo_thresholds(enum omap_plane plane,
1300 u32 *fifo_low, u32 *fifo_high, bool use_fifomerge,
1301 bool manual_update)
1302{
1303 /*
1304 * All sizes are in bytes. Both the buffer and burst are made of
1305 * buffer_units, and the fifo thresholds must be buffer_unit aligned.
1306 */
1307
1308 unsigned buf_unit = dss_feat_get_buffer_size_unit();
1309 unsigned ovl_fifo_size, total_fifo_size, burst_size;
1310 int i;
1311
1312 burst_size = dispc_ovl_get_burst_size(plane);
1313 ovl_fifo_size = dispc_ovl_get_fifo_size(plane);
1314
1315 if (use_fifomerge) {
1316 total_fifo_size = 0;
1317 for (i = 0; i < dss_feat_get_num_ovls(); ++i)
1318 total_fifo_size += dispc_ovl_get_fifo_size(i);
1319 } else {
1320 total_fifo_size = ovl_fifo_size;
1321 }
1322
1323 /*
1324 * We use the same low threshold for both fifomerge and non-fifomerge
1325 * cases, but for fifomerge we calculate the high threshold using the
1326 * combined fifo size
1327 */
1328
1329 if (manual_update && dss_has_feature(FEAT_OMAP3_DSI_FIFO_BUG)) {
1330 *fifo_low = ovl_fifo_size - burst_size * 2;
1331 *fifo_high = total_fifo_size - burst_size;
1332 } else if (plane == OMAP_DSS_WB) {
1333 /*
1334 * Most optimal configuration for writeback is to push out data
1335 * to the interconnect the moment writeback pushes enough pixels
1336 * in the FIFO to form a burst
1337 */
1338 *fifo_low = 0;
1339 *fifo_high = burst_size;
1340 } else {
1341 *fifo_low = ovl_fifo_size - burst_size;
1342 *fifo_high = total_fifo_size - buf_unit;
1343 }
1344}
1345
1346static void dispc_ovl_set_mflag(enum omap_plane plane, bool enable)
1347{
1348 int bit;
1349
1350 if (plane == OMAP_DSS_GFX)
1351 bit = 14;
1352 else
1353 bit = 23;
1354
1355 REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), enable, bit, bit);
1356}
1357
1358static void dispc_ovl_set_mflag_threshold(enum omap_plane plane,
1359 int low, int high)
1360{
1361 dispc_write_reg(DISPC_OVL_MFLAG_THRESHOLD(plane),
1362 FLD_VAL(high, 31, 16) | FLD_VAL(low, 15, 0));
1363}
1364
1365static void dispc_init_mflag(void)
1366{
1367 int i;
1368
1369 /*
1370 * HACK: NV12 color format and MFLAG seem to have problems working
1371 * together: using two displays, and having an NV12 overlay on one of
1372 * the displays will cause underflows/synclosts when MFLAG_CTRL=2.
1373 * Changing MFLAG thresholds and PRELOAD to certain values seem to
1374 * remove the errors, but there doesn't seem to be a clear logic on
1375 * which values work and which not.
1376 *
1377 * As a work-around, set force MFLAG to always on.
1378 */
1379 dispc_write_reg(DISPC_GLOBAL_MFLAG_ATTRIBUTE,
1380 (1 << 0) | /* MFLAG_CTRL = force always on */
1381 (0 << 2)); /* MFLAG_START = disable */
1382
1383 for (i = 0; i < dss_feat_get_num_ovls(); ++i) {
1384 u32 size = dispc_ovl_get_fifo_size(i);
1385 u32 unit = dss_feat_get_buffer_size_unit();
1386 u32 low, high;
1387
1388 dispc_ovl_set_mflag(i, true);
1389
1390 /*
1391 * Simulation team suggests below thesholds:
1392 * HT = fifosize * 5 / 8;
1393 * LT = fifosize * 4 / 8;
1394 */
1395
1396 low = size * 4 / 8 / unit;
1397 high = size * 5 / 8 / unit;
1398
1399 dispc_ovl_set_mflag_threshold(i, low, high);
1400 }
1401
1402 if (dispc.feat->has_writeback) {
1403 u32 size = dispc_ovl_get_fifo_size(OMAP_DSS_WB);
1404 u32 unit = dss_feat_get_buffer_size_unit();
1405 u32 low, high;
1406
1407 dispc_ovl_set_mflag(OMAP_DSS_WB, true);
1408
1409 /*
1410 * Simulation team suggests below thesholds:
1411 * HT = fifosize * 5 / 8;
1412 * LT = fifosize * 4 / 8;
1413 */
1414
1415 low = size * 4 / 8 / unit;
1416 high = size * 5 / 8 / unit;
1417
1418 dispc_ovl_set_mflag_threshold(OMAP_DSS_WB, low, high);
1419 }
1420}
1421
1422static void dispc_ovl_set_fir(enum omap_plane plane,
1423 int hinc, int vinc,
1424 enum omap_color_component color_comp)
1425{
1426 u32 val;
1427
1428 if (color_comp == DISPC_COLOR_COMPONENT_RGB_Y) {
1429 u8 hinc_start, hinc_end, vinc_start, vinc_end;
1430
1431 dss_feat_get_reg_field(FEAT_REG_FIRHINC,
1432 &hinc_start, &hinc_end);
1433 dss_feat_get_reg_field(FEAT_REG_FIRVINC,
1434 &vinc_start, &vinc_end);
1435 val = FLD_VAL(vinc, vinc_start, vinc_end) |
1436 FLD_VAL(hinc, hinc_start, hinc_end);
1437
1438 dispc_write_reg(DISPC_OVL_FIR(plane), val);
1439 } else {
1440 val = FLD_VAL(vinc, 28, 16) | FLD_VAL(hinc, 12, 0);
1441 dispc_write_reg(DISPC_OVL_FIR2(plane), val);
1442 }
1443}
1444
1445static void dispc_ovl_set_vid_accu0(enum omap_plane plane, int haccu, int vaccu)
1446{
1447 u32 val;
1448 u8 hor_start, hor_end, vert_start, vert_end;
1449
1450 dss_feat_get_reg_field(FEAT_REG_HORIZONTALACCU, &hor_start, &hor_end);
1451 dss_feat_get_reg_field(FEAT_REG_VERTICALACCU, &vert_start, &vert_end);
1452
1453 val = FLD_VAL(vaccu, vert_start, vert_end) |
1454 FLD_VAL(haccu, hor_start, hor_end);
1455
1456 dispc_write_reg(DISPC_OVL_ACCU0(plane), val);
1457}
1458
1459static void dispc_ovl_set_vid_accu1(enum omap_plane plane, int haccu, int vaccu)
1460{
1461 u32 val;
1462 u8 hor_start, hor_end, vert_start, vert_end;
1463
1464 dss_feat_get_reg_field(FEAT_REG_HORIZONTALACCU, &hor_start, &hor_end);
1465 dss_feat_get_reg_field(FEAT_REG_VERTICALACCU, &vert_start, &vert_end);
1466
1467 val = FLD_VAL(vaccu, vert_start, vert_end) |
1468 FLD_VAL(haccu, hor_start, hor_end);
1469
1470 dispc_write_reg(DISPC_OVL_ACCU1(plane), val);
1471}
1472
1473static void dispc_ovl_set_vid_accu2_0(enum omap_plane plane, int haccu,
1474 int vaccu)
1475{
1476 u32 val;
1477
1478 val = FLD_VAL(vaccu, 26, 16) | FLD_VAL(haccu, 10, 0);
1479 dispc_write_reg(DISPC_OVL_ACCU2_0(plane), val);
1480}
1481
1482static void dispc_ovl_set_vid_accu2_1(enum omap_plane plane, int haccu,
1483 int vaccu)
1484{
1485 u32 val;
1486
1487 val = FLD_VAL(vaccu, 26, 16) | FLD_VAL(haccu, 10, 0);
1488 dispc_write_reg(DISPC_OVL_ACCU2_1(plane), val);
1489}
1490
1491static void dispc_ovl_set_scale_param(enum omap_plane plane,
1492 u16 orig_width, u16 orig_height,
1493 u16 out_width, u16 out_height,
1494 bool five_taps, u8 rotation,
1495 enum omap_color_component color_comp)
1496{
1497 int fir_hinc, fir_vinc;
1498
1499 fir_hinc = 1024 * orig_width / out_width;
1500 fir_vinc = 1024 * orig_height / out_height;
1501
1502 dispc_ovl_set_scale_coef(plane, fir_hinc, fir_vinc, five_taps,
1503 color_comp);
1504 dispc_ovl_set_fir(plane, fir_hinc, fir_vinc, color_comp);
1505}
1506
1507static void dispc_ovl_set_accu_uv(enum omap_plane plane,
1508 u16 orig_width, u16 orig_height, u16 out_width, u16 out_height,
1509 bool ilace, enum omap_color_mode color_mode, u8 rotation)
1510{
1511 int h_accu2_0, h_accu2_1;
1512 int v_accu2_0, v_accu2_1;
1513 int chroma_hinc, chroma_vinc;
1514 int idx;
1515
1516 struct accu {
1517 s8 h0_m, h0_n;
1518 s8 h1_m, h1_n;
1519 s8 v0_m, v0_n;
1520 s8 v1_m, v1_n;
1521 };
1522
1523 const struct accu *accu_table;
1524 const struct accu *accu_val;
1525
1526 static const struct accu accu_nv12[4] = {
1527 { 0, 1, 0, 1 , -1, 2, 0, 1 },
1528 { 1, 2, -3, 4 , 0, 1, 0, 1 },
1529 { -1, 1, 0, 1 , -1, 2, 0, 1 },
1530 { -1, 2, -1, 2 , -1, 1, 0, 1 },
1531 };
1532
1533 static const struct accu accu_nv12_ilace[4] = {
1534 { 0, 1, 0, 1 , -3, 4, -1, 4 },
1535 { -1, 4, -3, 4 , 0, 1, 0, 1 },
1536 { -1, 1, 0, 1 , -1, 4, -3, 4 },
1537 { -3, 4, -3, 4 , -1, 1, 0, 1 },
1538 };
1539
1540 static const struct accu accu_yuv[4] = {
1541 { 0, 1, 0, 1, 0, 1, 0, 1 },
1542 { 0, 1, 0, 1, 0, 1, 0, 1 },
1543 { -1, 1, 0, 1, 0, 1, 0, 1 },
1544 { 0, 1, 0, 1, -1, 1, 0, 1 },
1545 };
1546
1547 switch (rotation) {
1548 case OMAP_DSS_ROT_0:
1549 idx = 0;
1550 break;
1551 case OMAP_DSS_ROT_90:
1552 idx = 1;
1553 break;
1554 case OMAP_DSS_ROT_180:
1555 idx = 2;
1556 break;
1557 case OMAP_DSS_ROT_270:
1558 idx = 3;
1559 break;
1560 default:
1561 BUG();
1562 return;
1563 }
1564
1565 switch (color_mode) {
1566 case OMAP_DSS_COLOR_NV12:
1567 if (ilace)
1568 accu_table = accu_nv12_ilace;
1569 else
1570 accu_table = accu_nv12;
1571 break;
1572 case OMAP_DSS_COLOR_YUV2:
1573 case OMAP_DSS_COLOR_UYVY:
1574 accu_table = accu_yuv;
1575 break;
1576 default:
1577 BUG();
1578 return;
1579 }
1580
1581 accu_val = &accu_table[idx];
1582
1583 chroma_hinc = 1024 * orig_width / out_width;
1584 chroma_vinc = 1024 * orig_height / out_height;
1585
1586 h_accu2_0 = (accu_val->h0_m * chroma_hinc / accu_val->h0_n) % 1024;
1587 h_accu2_1 = (accu_val->h1_m * chroma_hinc / accu_val->h1_n) % 1024;
1588 v_accu2_0 = (accu_val->v0_m * chroma_vinc / accu_val->v0_n) % 1024;
1589 v_accu2_1 = (accu_val->v1_m * chroma_vinc / accu_val->v1_n) % 1024;
1590
1591 dispc_ovl_set_vid_accu2_0(plane, h_accu2_0, v_accu2_0);
1592 dispc_ovl_set_vid_accu2_1(plane, h_accu2_1, v_accu2_1);
1593}
1594
1595static void dispc_ovl_set_scaling_common(enum omap_plane plane,
1596 u16 orig_width, u16 orig_height,
1597 u16 out_width, u16 out_height,
1598 bool ilace, bool five_taps,
1599 bool fieldmode, enum omap_color_mode color_mode,
1600 u8 rotation)
1601{
1602 int accu0 = 0;
1603 int accu1 = 0;
1604 u32 l;
1605
1606 dispc_ovl_set_scale_param(plane, orig_width, orig_height,
1607 out_width, out_height, five_taps,
1608 rotation, DISPC_COLOR_COMPONENT_RGB_Y);
1609 l = dispc_read_reg(DISPC_OVL_ATTRIBUTES(plane));
1610
1611 /* RESIZEENABLE and VERTICALTAPS */
1612 l &= ~((0x3 << 5) | (0x1 << 21));
1613 l |= (orig_width != out_width) ? (1 << 5) : 0;
1614 l |= (orig_height != out_height) ? (1 << 6) : 0;
1615 l |= five_taps ? (1 << 21) : 0;
1616
1617 /* VRESIZECONF and HRESIZECONF */
1618 if (dss_has_feature(FEAT_RESIZECONF)) {
1619 l &= ~(0x3 << 7);
1620 l |= (orig_width <= out_width) ? 0 : (1 << 7);
1621 l |= (orig_height <= out_height) ? 0 : (1 << 8);
1622 }
1623
1624 /* LINEBUFFERSPLIT */
1625 if (dss_has_feature(FEAT_LINEBUFFERSPLIT)) {
1626 l &= ~(0x1 << 22);
1627 l |= five_taps ? (1 << 22) : 0;
1628 }
1629
1630 dispc_write_reg(DISPC_OVL_ATTRIBUTES(plane), l);
1631
1632 /*
1633 * field 0 = even field = bottom field
1634 * field 1 = odd field = top field
1635 */
1636 if (ilace && !fieldmode) {
1637 accu1 = 0;
1638 accu0 = ((1024 * orig_height / out_height) / 2) & 0x3ff;
1639 if (accu0 >= 1024/2) {
1640 accu1 = 1024/2;
1641 accu0 -= accu1;
1642 }
1643 }
1644
1645 dispc_ovl_set_vid_accu0(plane, 0, accu0);
1646 dispc_ovl_set_vid_accu1(plane, 0, accu1);
1647}
1648
1649static void dispc_ovl_set_scaling_uv(enum omap_plane plane,
1650 u16 orig_width, u16 orig_height,
1651 u16 out_width, u16 out_height,
1652 bool ilace, bool five_taps,
1653 bool fieldmode, enum omap_color_mode color_mode,
1654 u8 rotation)
1655{
1656 int scale_x = out_width != orig_width;
1657 int scale_y = out_height != orig_height;
1658 bool chroma_upscale = plane != OMAP_DSS_WB ? true : false;
1659
1660 if (!dss_has_feature(FEAT_HANDLE_UV_SEPARATE))
1661 return;
1662 if ((color_mode != OMAP_DSS_COLOR_YUV2 &&
1663 color_mode != OMAP_DSS_COLOR_UYVY &&
1664 color_mode != OMAP_DSS_COLOR_NV12)) {
1665 /* reset chroma resampling for RGB formats */
1666 if (plane != OMAP_DSS_WB)
1667 REG_FLD_MOD(DISPC_OVL_ATTRIBUTES2(plane), 0, 8, 8);
1668 return;
1669 }
1670
1671 dispc_ovl_set_accu_uv(plane, orig_width, orig_height, out_width,
1672 out_height, ilace, color_mode, rotation);
1673
1674 switch (color_mode) {
1675 case OMAP_DSS_COLOR_NV12:
1676 if (chroma_upscale) {
1677 /* UV is subsampled by 2 horizontally and vertically */
1678 orig_height >>= 1;
1679 orig_width >>= 1;
1680 } else {
1681 /* UV is downsampled by 2 horizontally and vertically */
1682 orig_height <<= 1;
1683 orig_width <<= 1;
1684 }
1685
1686 break;
1687 case OMAP_DSS_COLOR_YUV2:
1688 case OMAP_DSS_COLOR_UYVY:
1689 /* For YUV422 with 90/270 rotation, we don't upsample chroma */
1690 if (rotation == OMAP_DSS_ROT_0 ||
1691 rotation == OMAP_DSS_ROT_180) {
1692 if (chroma_upscale)
1693 /* UV is subsampled by 2 horizontally */
1694 orig_width >>= 1;
1695 else
1696 /* UV is downsampled by 2 horizontally */
1697 orig_width <<= 1;
1698 }
1699
1700 /* must use FIR for YUV422 if rotated */
1701 if (rotation != OMAP_DSS_ROT_0)
1702 scale_x = scale_y = true;
1703
1704 break;
1705 default:
1706 BUG();
1707 return;
1708 }
1709
1710 if (out_width != orig_width)
1711 scale_x = true;
1712 if (out_height != orig_height)
1713 scale_y = true;
1714
1715 dispc_ovl_set_scale_param(plane, orig_width, orig_height,
1716 out_width, out_height, five_taps,
1717 rotation, DISPC_COLOR_COMPONENT_UV);
1718
1719 if (plane != OMAP_DSS_WB)
1720 REG_FLD_MOD(DISPC_OVL_ATTRIBUTES2(plane),
1721 (scale_x || scale_y) ? 1 : 0, 8, 8);
1722
1723 /* set H scaling */
1724 REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), scale_x ? 1 : 0, 5, 5);
1725 /* set V scaling */
1726 REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), scale_y ? 1 : 0, 6, 6);
1727}
1728
1729static void dispc_ovl_set_scaling(enum omap_plane plane,
1730 u16 orig_width, u16 orig_height,
1731 u16 out_width, u16 out_height,
1732 bool ilace, bool five_taps,
1733 bool fieldmode, enum omap_color_mode color_mode,
1734 u8 rotation)
1735{
1736 BUG_ON(plane == OMAP_DSS_GFX);
1737
1738 dispc_ovl_set_scaling_common(plane,
1739 orig_width, orig_height,
1740 out_width, out_height,
1741 ilace, five_taps,
1742 fieldmode, color_mode,
1743 rotation);
1744
1745 dispc_ovl_set_scaling_uv(plane,
1746 orig_width, orig_height,
1747 out_width, out_height,
1748 ilace, five_taps,
1749 fieldmode, color_mode,
1750 rotation);
1751}
1752
1753static void dispc_ovl_set_rotation_attrs(enum omap_plane plane, u8 rotation,
1754 enum omap_dss_rotation_type rotation_type,
1755 bool mirroring, enum omap_color_mode color_mode)
1756{
1757 bool row_repeat = false;
1758 int vidrot = 0;
1759
1760 if (color_mode == OMAP_DSS_COLOR_YUV2 ||
1761 color_mode == OMAP_DSS_COLOR_UYVY) {
1762
1763 if (mirroring) {
1764 switch (rotation) {
1765 case OMAP_DSS_ROT_0:
1766 vidrot = 2;
1767 break;
1768 case OMAP_DSS_ROT_90:
1769 vidrot = 1;
1770 break;
1771 case OMAP_DSS_ROT_180:
1772 vidrot = 0;
1773 break;
1774 case OMAP_DSS_ROT_270:
1775 vidrot = 3;
1776 break;
1777 }
1778 } else {
1779 switch (rotation) {
1780 case OMAP_DSS_ROT_0:
1781 vidrot = 0;
1782 break;
1783 case OMAP_DSS_ROT_90:
1784 vidrot = 1;
1785 break;
1786 case OMAP_DSS_ROT_180:
1787 vidrot = 2;
1788 break;
1789 case OMAP_DSS_ROT_270:
1790 vidrot = 3;
1791 break;
1792 }
1793 }
1794
1795 if (rotation == OMAP_DSS_ROT_90 || rotation == OMAP_DSS_ROT_270)
1796 row_repeat = true;
1797 else
1798 row_repeat = false;
1799 }
1800
1801 /*
1802 * OMAP4/5 Errata i631:
1803 * NV12 in 1D mode must use ROTATION=1. Otherwise DSS will fetch extra
1804 * rows beyond the framebuffer, which may cause OCP error.
1805 */
1806 if (color_mode == OMAP_DSS_COLOR_NV12 &&
1807 rotation_type != OMAP_DSS_ROT_TILER)
1808 vidrot = 1;
1809
1810 REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), vidrot, 13, 12);
1811 if (dss_has_feature(FEAT_ROWREPEATENABLE))
1812 REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane),
1813 row_repeat ? 1 : 0, 18, 18);
1814
1815 if (color_mode == OMAP_DSS_COLOR_NV12) {
1816 bool doublestride = (rotation_type == OMAP_DSS_ROT_TILER) &&
1817 (rotation == OMAP_DSS_ROT_0 ||
1818 rotation == OMAP_DSS_ROT_180);
1819 /* DOUBLESTRIDE */
1820 REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), doublestride, 22, 22);
1821 }
1822
1823}
1824
1825static int color_mode_to_bpp(enum omap_color_mode color_mode)
1826{
1827 switch (color_mode) {
1828 case OMAP_DSS_COLOR_CLUT1:
1829 return 1;
1830 case OMAP_DSS_COLOR_CLUT2:
1831 return 2;
1832 case OMAP_DSS_COLOR_CLUT4:
1833 return 4;
1834 case OMAP_DSS_COLOR_CLUT8:
1835 case OMAP_DSS_COLOR_NV12:
1836 return 8;
1837 case OMAP_DSS_COLOR_RGB12U:
1838 case OMAP_DSS_COLOR_RGB16:
1839 case OMAP_DSS_COLOR_ARGB16:
1840 case OMAP_DSS_COLOR_YUV2:
1841 case OMAP_DSS_COLOR_UYVY:
1842 case OMAP_DSS_COLOR_RGBA16:
1843 case OMAP_DSS_COLOR_RGBX16:
1844 case OMAP_DSS_COLOR_ARGB16_1555:
1845 case OMAP_DSS_COLOR_XRGB16_1555:
1846 return 16;
1847 case OMAP_DSS_COLOR_RGB24P:
1848 return 24;
1849 case OMAP_DSS_COLOR_RGB24U:
1850 case OMAP_DSS_COLOR_ARGB32:
1851 case OMAP_DSS_COLOR_RGBA32:
1852 case OMAP_DSS_COLOR_RGBX32:
1853 return 32;
1854 default:
1855 BUG();
1856 return 0;
1857 }
1858}
1859
1860static s32 pixinc(int pixels, u8 ps)
1861{
1862 if (pixels == 1)
1863 return 1;
1864 else if (pixels > 1)
1865 return 1 + (pixels - 1) * ps;
1866 else if (pixels < 0)
1867 return 1 - (-pixels + 1) * ps;
1868 else
1869 BUG();
1870 return 0;
1871}
1872
1873static void calc_vrfb_rotation_offset(u8 rotation, bool mirror,
1874 u16 screen_width,
1875 u16 width, u16 height,
1876 enum omap_color_mode color_mode, bool fieldmode,
1877 unsigned int field_offset,
1878 unsigned *offset0, unsigned *offset1,
1879 s32 *row_inc, s32 *pix_inc, int x_predecim, int y_predecim)
1880{
1881 u8 ps;
1882
1883 /* FIXME CLUT formats */
1884 switch (color_mode) {
1885 case OMAP_DSS_COLOR_CLUT1:
1886 case OMAP_DSS_COLOR_CLUT2:
1887 case OMAP_DSS_COLOR_CLUT4:
1888 case OMAP_DSS_COLOR_CLUT8:
1889 BUG();
1890 return;
1891 case OMAP_DSS_COLOR_YUV2:
1892 case OMAP_DSS_COLOR_UYVY:
1893 ps = 4;
1894 break;
1895 default:
1896 ps = color_mode_to_bpp(color_mode) / 8;
1897 break;
1898 }
1899
1900 DSSDBG("calc_rot(%d): scrw %d, %dx%d\n", rotation, screen_width,
1901 width, height);
1902
1903 /*
1904 * field 0 = even field = bottom field
1905 * field 1 = odd field = top field
1906 */
1907 switch (rotation + mirror * 4) {
1908 case OMAP_DSS_ROT_0:
1909 case OMAP_DSS_ROT_180:
1910 /*
1911 * If the pixel format is YUV or UYVY divide the width
1912 * of the image by 2 for 0 and 180 degree rotation.
1913 */
1914 if (color_mode == OMAP_DSS_COLOR_YUV2 ||
1915 color_mode == OMAP_DSS_COLOR_UYVY)
1916 width = width >> 1;
1917 case OMAP_DSS_ROT_90:
1918 case OMAP_DSS_ROT_270:
1919 *offset1 = 0;
1920 if (field_offset)
1921 *offset0 = field_offset * screen_width * ps;
1922 else
1923 *offset0 = 0;
1924
1925 *row_inc = pixinc(1 +
1926 (y_predecim * screen_width - x_predecim * width) +
1927 (fieldmode ? screen_width : 0), ps);
1928 *pix_inc = pixinc(x_predecim, ps);
1929 break;
1930
1931 case OMAP_DSS_ROT_0 + 4:
1932 case OMAP_DSS_ROT_180 + 4:
1933 /* If the pixel format is YUV or UYVY divide the width
1934 * of the image by 2 for 0 degree and 180 degree
1935 */
1936 if (color_mode == OMAP_DSS_COLOR_YUV2 ||
1937 color_mode == OMAP_DSS_COLOR_UYVY)
1938 width = width >> 1;
1939 case OMAP_DSS_ROT_90 + 4:
1940 case OMAP_DSS_ROT_270 + 4:
1941 *offset1 = 0;
1942 if (field_offset)
1943 *offset0 = field_offset * screen_width * ps;
1944 else
1945 *offset0 = 0;
1946 *row_inc = pixinc(1 -
1947 (y_predecim * screen_width + x_predecim * width) -
1948 (fieldmode ? screen_width : 0), ps);
1949 *pix_inc = pixinc(x_predecim, ps);
1950 break;
1951
1952 default:
1953 BUG();
1954 return;
1955 }
1956}
1957
1958static void calc_dma_rotation_offset(u8 rotation, bool mirror,
1959 u16 screen_width,
1960 u16 width, u16 height,
1961 enum omap_color_mode color_mode, bool fieldmode,
1962 unsigned int field_offset,
1963 unsigned *offset0, unsigned *offset1,
1964 s32 *row_inc, s32 *pix_inc, int x_predecim, int y_predecim)
1965{
1966 u8 ps;
1967 u16 fbw, fbh;
1968
1969 /* FIXME CLUT formats */
1970 switch (color_mode) {
1971 case OMAP_DSS_COLOR_CLUT1:
1972 case OMAP_DSS_COLOR_CLUT2:
1973 case OMAP_DSS_COLOR_CLUT4:
1974 case OMAP_DSS_COLOR_CLUT8:
1975 BUG();
1976 return;
1977 default:
1978 ps = color_mode_to_bpp(color_mode) / 8;
1979 break;
1980 }
1981
1982 DSSDBG("calc_rot(%d): scrw %d, %dx%d\n", rotation, screen_width,
1983 width, height);
1984
1985 /* width & height are overlay sizes, convert to fb sizes */
1986
1987 if (rotation == OMAP_DSS_ROT_0 || rotation == OMAP_DSS_ROT_180) {
1988 fbw = width;
1989 fbh = height;
1990 } else {
1991 fbw = height;
1992 fbh = width;
1993 }
1994
1995 /*
1996 * field 0 = even field = bottom field
1997 * field 1 = odd field = top field
1998 */
1999 switch (rotation + mirror * 4) {
2000 case OMAP_DSS_ROT_0:
2001 *offset1 = 0;
2002 if (field_offset)
2003 *offset0 = *offset1 + field_offset * screen_width * ps;
2004 else
2005 *offset0 = *offset1;
2006 *row_inc = pixinc(1 +
2007 (y_predecim * screen_width - fbw * x_predecim) +
2008 (fieldmode ? screen_width : 0), ps);
2009 if (color_mode == OMAP_DSS_COLOR_YUV2 ||
2010 color_mode == OMAP_DSS_COLOR_UYVY)
2011 *pix_inc = pixinc(x_predecim, 2 * ps);
2012 else
2013 *pix_inc = pixinc(x_predecim, ps);
2014 break;
2015 case OMAP_DSS_ROT_90:
2016 *offset1 = screen_width * (fbh - 1) * ps;
2017 if (field_offset)
2018 *offset0 = *offset1 + field_offset * ps;
2019 else
2020 *offset0 = *offset1;
2021 *row_inc = pixinc(screen_width * (fbh * x_predecim - 1) +
2022 y_predecim + (fieldmode ? 1 : 0), ps);
2023 *pix_inc = pixinc(-x_predecim * screen_width, ps);
2024 break;
2025 case OMAP_DSS_ROT_180:
2026 *offset1 = (screen_width * (fbh - 1) + fbw - 1) * ps;
2027 if (field_offset)
2028 *offset0 = *offset1 - field_offset * screen_width * ps;
2029 else
2030 *offset0 = *offset1;
2031 *row_inc = pixinc(-1 -
2032 (y_predecim * screen_width - fbw * x_predecim) -
2033 (fieldmode ? screen_width : 0), ps);
2034 if (color_mode == OMAP_DSS_COLOR_YUV2 ||
2035 color_mode == OMAP_DSS_COLOR_UYVY)
2036 *pix_inc = pixinc(-x_predecim, 2 * ps);
2037 else
2038 *pix_inc = pixinc(-x_predecim, ps);
2039 break;
2040 case OMAP_DSS_ROT_270:
2041 *offset1 = (fbw - 1) * ps;
2042 if (field_offset)
2043 *offset0 = *offset1 - field_offset * ps;
2044 else
2045 *offset0 = *offset1;
2046 *row_inc = pixinc(-screen_width * (fbh * x_predecim - 1) -
2047 y_predecim - (fieldmode ? 1 : 0), ps);
2048 *pix_inc = pixinc(x_predecim * screen_width, ps);
2049 break;
2050
2051 /* mirroring */
2052 case OMAP_DSS_ROT_0 + 4:
2053 *offset1 = (fbw - 1) * ps;
2054 if (field_offset)
2055 *offset0 = *offset1 + field_offset * screen_width * ps;
2056 else
2057 *offset0 = *offset1;
2058 *row_inc = pixinc(y_predecim * screen_width * 2 - 1 +
2059 (fieldmode ? screen_width : 0),
2060 ps);
2061 if (color_mode == OMAP_DSS_COLOR_YUV2 ||
2062 color_mode == OMAP_DSS_COLOR_UYVY)
2063 *pix_inc = pixinc(-x_predecim, 2 * ps);
2064 else
2065 *pix_inc = pixinc(-x_predecim, ps);
2066 break;
2067
2068 case OMAP_DSS_ROT_90 + 4:
2069 *offset1 = 0;
2070 if (field_offset)
2071 *offset0 = *offset1 + field_offset * ps;
2072 else
2073 *offset0 = *offset1;
2074 *row_inc = pixinc(-screen_width * (fbh * x_predecim - 1) +
2075 y_predecim + (fieldmode ? 1 : 0),
2076 ps);
2077 *pix_inc = pixinc(x_predecim * screen_width, ps);
2078 break;
2079
2080 case OMAP_DSS_ROT_180 + 4:
2081 *offset1 = screen_width * (fbh - 1) * ps;
2082 if (field_offset)
2083 *offset0 = *offset1 - field_offset * screen_width * ps;
2084 else
2085 *offset0 = *offset1;
2086 *row_inc = pixinc(1 - y_predecim * screen_width * 2 -
2087 (fieldmode ? screen_width : 0),
2088 ps);
2089 if (color_mode == OMAP_DSS_COLOR_YUV2 ||
2090 color_mode == OMAP_DSS_COLOR_UYVY)
2091 *pix_inc = pixinc(x_predecim, 2 * ps);
2092 else
2093 *pix_inc = pixinc(x_predecim, ps);
2094 break;
2095
2096 case OMAP_DSS_ROT_270 + 4:
2097 *offset1 = (screen_width * (fbh - 1) + fbw - 1) * ps;
2098 if (field_offset)
2099 *offset0 = *offset1 - field_offset * ps;
2100 else
2101 *offset0 = *offset1;
2102 *row_inc = pixinc(screen_width * (fbh * x_predecim - 1) -
2103 y_predecim - (fieldmode ? 1 : 0),
2104 ps);
2105 *pix_inc = pixinc(-x_predecim * screen_width, ps);
2106 break;
2107
2108 default:
2109 BUG();
2110 return;
2111 }
2112}
2113
2114static void calc_tiler_rotation_offset(u16 screen_width, u16 width,
2115 enum omap_color_mode color_mode, bool fieldmode,
2116 unsigned int field_offset, unsigned *offset0, unsigned *offset1,
2117 s32 *row_inc, s32 *pix_inc, int x_predecim, int y_predecim)
2118{
2119 u8 ps;
2120
2121 switch (color_mode) {
2122 case OMAP_DSS_COLOR_CLUT1:
2123 case OMAP_DSS_COLOR_CLUT2:
2124 case OMAP_DSS_COLOR_CLUT4:
2125 case OMAP_DSS_COLOR_CLUT8:
2126 BUG();
2127 return;
2128 default:
2129 ps = color_mode_to_bpp(color_mode) / 8;
2130 break;
2131 }
2132
2133 DSSDBG("scrw %d, width %d\n", screen_width, width);
2134
2135 /*
2136 * field 0 = even field = bottom field
2137 * field 1 = odd field = top field
2138 */
2139 *offset1 = 0;
2140 if (field_offset)
2141 *offset0 = *offset1 + field_offset * screen_width * ps;
2142 else
2143 *offset0 = *offset1;
2144 *row_inc = pixinc(1 + (y_predecim * screen_width - width * x_predecim) +
2145 (fieldmode ? screen_width : 0), ps);
2146 if (color_mode == OMAP_DSS_COLOR_YUV2 ||
2147 color_mode == OMAP_DSS_COLOR_UYVY)
2148 *pix_inc = pixinc(x_predecim, 2 * ps);
2149 else
2150 *pix_inc = pixinc(x_predecim, ps);
2151}
2152
2153/*
2154 * This function is used to avoid synclosts in OMAP3, because of some
2155 * undocumented horizontal position and timing related limitations.
2156 */
2157static int check_horiz_timing_omap3(unsigned long pclk, unsigned long lclk,
2158 const struct omap_video_timings *t, u16 pos_x,
2159 u16 width, u16 height, u16 out_width, u16 out_height,
2160 bool five_taps)
2161{
2162 const int ds = DIV_ROUND_UP(height, out_height);
2163 unsigned long nonactive;
2164 static const u8 limits[3] = { 8, 10, 20 };
2165 u64 val, blank;
2166 int i;
2167
2168 nonactive = t->x_res + t->hfp + t->hsw + t->hbp - out_width;
2169
2170 i = 0;
2171 if (out_height < height)
2172 i++;
2173 if (out_width < width)
2174 i++;
2175 blank = div_u64((u64)(t->hbp + t->hsw + t->hfp) * lclk, pclk);
2176 DSSDBG("blanking period + ppl = %llu (limit = %u)\n", blank, limits[i]);
2177 if (blank <= limits[i])
2178 return -EINVAL;
2179
2180 /* FIXME add checks for 3-tap filter once the limitations are known */
2181 if (!five_taps)
2182 return 0;
2183
2184 /*
2185 * Pixel data should be prepared before visible display point starts.
2186 * So, atleast DS-2 lines must have already been fetched by DISPC
2187 * during nonactive - pos_x period.
2188 */
2189 val = div_u64((u64)(nonactive - pos_x) * lclk, pclk);
2190 DSSDBG("(nonactive - pos_x) * pcd = %llu max(0, DS - 2) * width = %d\n",
2191 val, max(0, ds - 2) * width);
2192 if (val < max(0, ds - 2) * width)
2193 return -EINVAL;
2194
2195 /*
2196 * All lines need to be refilled during the nonactive period of which
2197 * only one line can be loaded during the active period. So, atleast
2198 * DS - 1 lines should be loaded during nonactive period.
2199 */
2200 val = div_u64((u64)nonactive * lclk, pclk);
2201 DSSDBG("nonactive * pcd = %llu, max(0, DS - 1) * width = %d\n",
2202 val, max(0, ds - 1) * width);
2203 if (val < max(0, ds - 1) * width)
2204 return -EINVAL;
2205
2206 return 0;
2207}
2208
2209static unsigned long calc_core_clk_five_taps(unsigned long pclk,
2210 const struct omap_video_timings *mgr_timings, u16 width,
2211 u16 height, u16 out_width, u16 out_height,
2212 enum omap_color_mode color_mode)
2213{
2214 u32 core_clk = 0;
2215 u64 tmp;
2216
2217 if (height <= out_height && width <= out_width)
2218 return (unsigned long) pclk;
2219
2220 if (height > out_height) {
2221 unsigned int ppl = mgr_timings->x_res;
2222
2223 tmp = (u64)pclk * height * out_width;
2224 do_div(tmp, 2 * out_height * ppl);
2225 core_clk = tmp;
2226
2227 if (height > 2 * out_height) {
2228 if (ppl == out_width)
2229 return 0;
2230
2231 tmp = (u64)pclk * (height - 2 * out_height) * out_width;
2232 do_div(tmp, 2 * out_height * (ppl - out_width));
2233 core_clk = max_t(u32, core_clk, tmp);
2234 }
2235 }
2236
2237 if (width > out_width) {
2238 tmp = (u64)pclk * width;
2239 do_div(tmp, out_width);
2240 core_clk = max_t(u32, core_clk, tmp);
2241
2242 if (color_mode == OMAP_DSS_COLOR_RGB24U)
2243 core_clk <<= 1;
2244 }
2245
2246 return core_clk;
2247}
2248
2249static unsigned long calc_core_clk_24xx(unsigned long pclk, u16 width,
2250 u16 height, u16 out_width, u16 out_height, bool mem_to_mem)
2251{
2252 if (height > out_height && width > out_width)
2253 return pclk * 4;
2254 else
2255 return pclk * 2;
2256}
2257
2258static unsigned long calc_core_clk_34xx(unsigned long pclk, u16 width,
2259 u16 height, u16 out_width, u16 out_height, bool mem_to_mem)
2260{
2261 unsigned int hf, vf;
2262
2263 /*
2264 * FIXME how to determine the 'A' factor
2265 * for the no downscaling case ?
2266 */
2267
2268 if (width > 3 * out_width)
2269 hf = 4;
2270 else if (width > 2 * out_width)
2271 hf = 3;
2272 else if (width > out_width)
2273 hf = 2;
2274 else
2275 hf = 1;
2276 if (height > out_height)
2277 vf = 2;
2278 else
2279 vf = 1;
2280
2281 return pclk * vf * hf;
2282}
2283
2284static unsigned long calc_core_clk_44xx(unsigned long pclk, u16 width,
2285 u16 height, u16 out_width, u16 out_height, bool mem_to_mem)
2286{
2287 /*
2288 * If the overlay/writeback is in mem to mem mode, there are no
2289 * downscaling limitations with respect to pixel clock, return 1 as
2290 * required core clock to represent that we have sufficient enough
2291 * core clock to do maximum downscaling
2292 */
2293 if (mem_to_mem)
2294 return 1;
2295
2296 if (width > out_width)
2297 return DIV_ROUND_UP(pclk, out_width) * width;
2298 else
2299 return pclk;
2300}
2301
2302static int dispc_ovl_calc_scaling_24xx(unsigned long pclk, unsigned long lclk,
2303 const struct omap_video_timings *mgr_timings,
2304 u16 width, u16 height, u16 out_width, u16 out_height,
2305 enum omap_color_mode color_mode, bool *five_taps,
2306 int *x_predecim, int *y_predecim, int *decim_x, int *decim_y,
2307 u16 pos_x, unsigned long *core_clk, bool mem_to_mem)
2308{
2309 int error;
2310 u16 in_width, in_height;
2311 int min_factor = min(*decim_x, *decim_y);
2312 const int maxsinglelinewidth =
2313 dss_feat_get_param_max(FEAT_PARAM_LINEWIDTH);
2314
2315 *five_taps = false;
2316
2317 do {
2318 in_height = height / *decim_y;
2319 in_width = width / *decim_x;
2320 *core_clk = dispc.feat->calc_core_clk(pclk, in_width,
2321 in_height, out_width, out_height, mem_to_mem);
2322 error = (in_width > maxsinglelinewidth || !*core_clk ||
2323 *core_clk > dispc_core_clk_rate());
2324 if (error) {
2325 if (*decim_x == *decim_y) {
2326 *decim_x = min_factor;
2327 ++*decim_y;
2328 } else {
2329 swap(*decim_x, *decim_y);
2330 if (*decim_x < *decim_y)
2331 ++*decim_x;
2332 }
2333 }
2334 } while (*decim_x <= *x_predecim && *decim_y <= *y_predecim && error);
2335
2336 if (error) {
2337 DSSERR("failed to find scaling settings\n");
2338 return -EINVAL;
2339 }
2340
2341 if (in_width > maxsinglelinewidth) {
2342 DSSERR("Cannot scale max input width exceeded");
2343 return -EINVAL;
2344 }
2345 return 0;
2346}
2347
2348static int dispc_ovl_calc_scaling_34xx(unsigned long pclk, unsigned long lclk,
2349 const struct omap_video_timings *mgr_timings,
2350 u16 width, u16 height, u16 out_width, u16 out_height,
2351 enum omap_color_mode color_mode, bool *five_taps,
2352 int *x_predecim, int *y_predecim, int *decim_x, int *decim_y,
2353 u16 pos_x, unsigned long *core_clk, bool mem_to_mem)
2354{
2355 int error;
2356 u16 in_width, in_height;
2357 const int maxsinglelinewidth =
2358 dss_feat_get_param_max(FEAT_PARAM_LINEWIDTH);
2359
2360 do {
2361 in_height = height / *decim_y;
2362 in_width = width / *decim_x;
2363 *five_taps = in_height > out_height;
2364
2365 if (in_width > maxsinglelinewidth)
2366 if (in_height > out_height &&
2367 in_height < out_height * 2)
2368 *five_taps = false;
2369again:
2370 if (*five_taps)
2371 *core_clk = calc_core_clk_five_taps(pclk, mgr_timings,
2372 in_width, in_height, out_width,
2373 out_height, color_mode);
2374 else
2375 *core_clk = dispc.feat->calc_core_clk(pclk, in_width,
2376 in_height, out_width, out_height,
2377 mem_to_mem);
2378
2379 error = check_horiz_timing_omap3(pclk, lclk, mgr_timings,
2380 pos_x, in_width, in_height, out_width,
2381 out_height, *five_taps);
2382 if (error && *five_taps) {
2383 *five_taps = false;
2384 goto again;
2385 }
2386
2387 error = (error || in_width > maxsinglelinewidth * 2 ||
2388 (in_width > maxsinglelinewidth && *five_taps) ||
2389 !*core_clk || *core_clk > dispc_core_clk_rate());
2390
2391 if (!error) {
2392 /* verify that we're inside the limits of scaler */
2393 if (in_width / 4 > out_width)
2394 error = 1;
2395
2396 if (*five_taps) {
2397 if (in_height / 4 > out_height)
2398 error = 1;
2399 } else {
2400 if (in_height / 2 > out_height)
2401 error = 1;
2402 }
2403 }
2404
2405 if (error)
2406 ++*decim_y;
2407 } while (*decim_x <= *x_predecim && *decim_y <= *y_predecim && error);
2408
2409 if (error) {
2410 DSSERR("failed to find scaling settings\n");
2411 return -EINVAL;
2412 }
2413
2414 if (check_horiz_timing_omap3(pclk, lclk, mgr_timings, pos_x, in_width,
2415 in_height, out_width, out_height, *five_taps)) {
2416 DSSERR("horizontal timing too tight\n");
2417 return -EINVAL;
2418 }
2419
2420 if (in_width > (maxsinglelinewidth * 2)) {
2421 DSSERR("Cannot setup scaling");
2422 DSSERR("width exceeds maximum width possible");
2423 return -EINVAL;
2424 }
2425
2426 if (in_width > maxsinglelinewidth && *five_taps) {
2427 DSSERR("cannot setup scaling with five taps");
2428 return -EINVAL;
2429 }
2430 return 0;
2431}
2432
2433static int dispc_ovl_calc_scaling_44xx(unsigned long pclk, unsigned long lclk,
2434 const struct omap_video_timings *mgr_timings,
2435 u16 width, u16 height, u16 out_width, u16 out_height,
2436 enum omap_color_mode color_mode, bool *five_taps,
2437 int *x_predecim, int *y_predecim, int *decim_x, int *decim_y,
2438 u16 pos_x, unsigned long *core_clk, bool mem_to_mem)
2439{
2440 u16 in_width, in_width_max;
2441 int decim_x_min = *decim_x;
2442 u16 in_height = height / *decim_y;
2443 const int maxsinglelinewidth =
2444 dss_feat_get_param_max(FEAT_PARAM_LINEWIDTH);
2445 const int maxdownscale = dss_feat_get_param_max(FEAT_PARAM_DOWNSCALE);
2446
2447 if (mem_to_mem) {
2448 in_width_max = out_width * maxdownscale;
2449 } else {
2450 in_width_max = dispc_core_clk_rate() /
2451 DIV_ROUND_UP(pclk, out_width);
2452 }
2453
2454 *decim_x = DIV_ROUND_UP(width, in_width_max);
2455
2456 *decim_x = *decim_x > decim_x_min ? *decim_x : decim_x_min;
2457 if (*decim_x > *x_predecim)
2458 return -EINVAL;
2459
2460 do {
2461 in_width = width / *decim_x;
2462 } while (*decim_x <= *x_predecim &&
2463 in_width > maxsinglelinewidth && ++*decim_x);
2464
2465 if (in_width > maxsinglelinewidth) {
2466 DSSERR("Cannot scale width exceeds max line width");
2467 return -EINVAL;
2468 }
2469
2470 *core_clk = dispc.feat->calc_core_clk(pclk, in_width, in_height,
2471 out_width, out_height, mem_to_mem);
2472 return 0;
2473}
2474
2475#define DIV_FRAC(dividend, divisor) \
2476 ((dividend) * 100 / (divisor) - ((dividend) / (divisor) * 100))
2477
2478static int dispc_ovl_calc_scaling(unsigned long pclk, unsigned long lclk,
2479 enum omap_overlay_caps caps,
2480 const struct omap_video_timings *mgr_timings,
2481 u16 width, u16 height, u16 out_width, u16 out_height,
2482 enum omap_color_mode color_mode, bool *five_taps,
2483 int *x_predecim, int *y_predecim, u16 pos_x,
2484 enum omap_dss_rotation_type rotation_type, bool mem_to_mem)
2485{
2486 const int maxdownscale = dss_feat_get_param_max(FEAT_PARAM_DOWNSCALE);
2487 const int max_decim_limit = 16;
2488 unsigned long core_clk = 0;
2489 int decim_x, decim_y, ret;
2490
2491 if (width == out_width && height == out_height)
2492 return 0;
2493
2494 if (!mem_to_mem && (pclk == 0 || mgr_timings->pixelclock == 0)) {
2495 DSSERR("cannot calculate scaling settings: pclk is zero\n");
2496 return -EINVAL;
2497 }
2498
2499 if ((caps & OMAP_DSS_OVL_CAP_SCALE) == 0)
2500 return -EINVAL;
2501
2502 if (mem_to_mem) {
2503 *x_predecim = *y_predecim = 1;
2504 } else {
2505 *x_predecim = max_decim_limit;
2506 *y_predecim = (rotation_type == OMAP_DSS_ROT_TILER &&
2507 dss_has_feature(FEAT_BURST_2D)) ?
2508 2 : max_decim_limit;
2509 }
2510
2511 if (color_mode == OMAP_DSS_COLOR_CLUT1 ||
2512 color_mode == OMAP_DSS_COLOR_CLUT2 ||
2513 color_mode == OMAP_DSS_COLOR_CLUT4 ||
2514 color_mode == OMAP_DSS_COLOR_CLUT8) {
2515 *x_predecim = 1;
2516 *y_predecim = 1;
2517 *five_taps = false;
2518 return 0;
2519 }
2520
2521 decim_x = DIV_ROUND_UP(DIV_ROUND_UP(width, out_width), maxdownscale);
2522 decim_y = DIV_ROUND_UP(DIV_ROUND_UP(height, out_height), maxdownscale);
2523
2524 if (decim_x > *x_predecim || out_width > width * 8)
2525 return -EINVAL;
2526
2527 if (decim_y > *y_predecim || out_height > height * 8)
2528 return -EINVAL;
2529
2530 ret = dispc.feat->calc_scaling(pclk, lclk, mgr_timings, width, height,
2531 out_width, out_height, color_mode, five_taps,
2532 x_predecim, y_predecim, &decim_x, &decim_y, pos_x, &core_clk,
2533 mem_to_mem);
2534 if (ret)
2535 return ret;
2536
2537 DSSDBG("%dx%d -> %dx%d (%d.%02d x %d.%02d), decim %dx%d %dx%d (%d.%02d x %d.%02d), taps %d, req clk %lu, cur clk %lu\n",
2538 width, height,
2539 out_width, out_height,
2540 out_width / width, DIV_FRAC(out_width, width),
2541 out_height / height, DIV_FRAC(out_height, height),
2542
2543 decim_x, decim_y,
2544 width / decim_x, height / decim_y,
2545 out_width / (width / decim_x), DIV_FRAC(out_width, width / decim_x),
2546 out_height / (height / decim_y), DIV_FRAC(out_height, height / decim_y),
2547
2548 *five_taps ? 5 : 3,
2549 core_clk, dispc_core_clk_rate());
2550
2551 if (!core_clk || core_clk > dispc_core_clk_rate()) {
2552 DSSERR("failed to set up scaling, "
2553 "required core clk rate = %lu Hz, "
2554 "current core clk rate = %lu Hz\n",
2555 core_clk, dispc_core_clk_rate());
2556 return -EINVAL;
2557 }
2558
2559 *x_predecim = decim_x;
2560 *y_predecim = decim_y;
2561 return 0;
2562}
2563
2564static int dispc_ovl_setup_common(enum omap_plane plane,
2565 enum omap_overlay_caps caps, u32 paddr, u32 p_uv_addr,
2566 u16 screen_width, int pos_x, int pos_y, u16 width, u16 height,
2567 u16 out_width, u16 out_height, enum omap_color_mode color_mode,
2568 u8 rotation, bool mirror, u8 zorder, u8 pre_mult_alpha,
2569 u8 global_alpha, enum omap_dss_rotation_type rotation_type,
2570 bool replication, const struct omap_video_timings *mgr_timings,
2571 bool mem_to_mem)
2572{
2573 bool five_taps = true;
2574 bool fieldmode = false;
2575 int r, cconv = 0;
2576 unsigned offset0, offset1;
2577 s32 row_inc;
2578 s32 pix_inc;
2579 u16 frame_width, frame_height;
2580 unsigned int field_offset = 0;
2581 u16 in_height = height;
2582 u16 in_width = width;
2583 int x_predecim = 1, y_predecim = 1;
2584 bool ilace = mgr_timings->interlace;
2585 unsigned long pclk = dispc_plane_pclk_rate(plane);
2586 unsigned long lclk = dispc_plane_lclk_rate(plane);
2587
2588 if (paddr == 0 && rotation_type != OMAP_DSS_ROT_TILER)
2589 return -EINVAL;
2590
2591 switch (color_mode) {
2592 case OMAP_DSS_COLOR_YUV2:
2593 case OMAP_DSS_COLOR_UYVY:
2594 case OMAP_DSS_COLOR_NV12:
2595 if (in_width & 1) {
2596 DSSERR("input width %d is not even for YUV format\n",
2597 in_width);
2598 return -EINVAL;
2599 }
2600 break;
2601
2602 default:
2603 break;
2604 }
2605
2606 out_width = out_width == 0 ? width : out_width;
2607 out_height = out_height == 0 ? height : out_height;
2608
2609 if (ilace && height == out_height)
2610 fieldmode = true;
2611
2612 if (ilace) {
2613 if (fieldmode)
2614 in_height /= 2;
2615 pos_y /= 2;
2616 out_height /= 2;
2617
2618 DSSDBG("adjusting for ilace: height %d, pos_y %d, "
2619 "out_height %d\n", in_height, pos_y,
2620 out_height);
2621 }
2622
2623 if (!dss_feat_color_mode_supported(plane, color_mode))
2624 return -EINVAL;
2625
2626 r = dispc_ovl_calc_scaling(pclk, lclk, caps, mgr_timings, in_width,
2627 in_height, out_width, out_height, color_mode,
2628 &five_taps, &x_predecim, &y_predecim, pos_x,
2629 rotation_type, mem_to_mem);
2630 if (r)
2631 return r;
2632
2633 in_width = in_width / x_predecim;
2634 in_height = in_height / y_predecim;
2635
2636 if (x_predecim > 1 || y_predecim > 1)
2637 DSSDBG("predecimation %d x %x, new input size %d x %d\n",
2638 x_predecim, y_predecim, in_width, in_height);
2639
2640 switch (color_mode) {
2641 case OMAP_DSS_COLOR_YUV2:
2642 case OMAP_DSS_COLOR_UYVY:
2643 case OMAP_DSS_COLOR_NV12:
2644 if (in_width & 1) {
2645 DSSDBG("predecimated input width is not even for YUV format\n");
2646 DSSDBG("adjusting input width %d -> %d\n",
2647 in_width, in_width & ~1);
2648
2649 in_width &= ~1;
2650 }
2651 break;
2652
2653 default:
2654 break;
2655 }
2656
2657 if (color_mode == OMAP_DSS_COLOR_YUV2 ||
2658 color_mode == OMAP_DSS_COLOR_UYVY ||
2659 color_mode == OMAP_DSS_COLOR_NV12)
2660 cconv = 1;
2661
2662 if (ilace && !fieldmode) {
2663 /*
2664 * when downscaling the bottom field may have to start several
2665 * source lines below the top field. Unfortunately ACCUI
2666 * registers will only hold the fractional part of the offset
2667 * so the integer part must be added to the base address of the
2668 * bottom field.
2669 */
2670 if (!in_height || in_height == out_height)
2671 field_offset = 0;
2672 else
2673 field_offset = in_height / out_height / 2;
2674 }
2675
2676 /* Fields are independent but interleaved in memory. */
2677 if (fieldmode)
2678 field_offset = 1;
2679
2680 offset0 = 0;
2681 offset1 = 0;
2682 row_inc = 0;
2683 pix_inc = 0;
2684
2685 if (plane == OMAP_DSS_WB) {
2686 frame_width = out_width;
2687 frame_height = out_height;
2688 } else {
2689 frame_width = in_width;
2690 frame_height = height;
2691 }
2692
2693 if (rotation_type == OMAP_DSS_ROT_TILER)
2694 calc_tiler_rotation_offset(screen_width, frame_width,
2695 color_mode, fieldmode, field_offset,
2696 &offset0, &offset1, &row_inc, &pix_inc,
2697 x_predecim, y_predecim);
2698 else if (rotation_type == OMAP_DSS_ROT_DMA)
2699 calc_dma_rotation_offset(rotation, mirror, screen_width,
2700 frame_width, frame_height,
2701 color_mode, fieldmode, field_offset,
2702 &offset0, &offset1, &row_inc, &pix_inc,
2703 x_predecim, y_predecim);
2704 else
2705 calc_vrfb_rotation_offset(rotation, mirror,
2706 screen_width, frame_width, frame_height,
2707 color_mode, fieldmode, field_offset,
2708 &offset0, &offset1, &row_inc, &pix_inc,
2709 x_predecim, y_predecim);
2710
2711 DSSDBG("offset0 %u, offset1 %u, row_inc %d, pix_inc %d\n",
2712 offset0, offset1, row_inc, pix_inc);
2713
2714 dispc_ovl_set_color_mode(plane, color_mode);
2715
2716 dispc_ovl_configure_burst_type(plane, rotation_type);
2717
2718 if (dispc.feat->reverse_ilace_field_order)
2719 swap(offset0, offset1);
2720
2721 dispc_ovl_set_ba0(plane, paddr + offset0);
2722 dispc_ovl_set_ba1(plane, paddr + offset1);
2723
2724 if (OMAP_DSS_COLOR_NV12 == color_mode) {
2725 dispc_ovl_set_ba0_uv(plane, p_uv_addr + offset0);
2726 dispc_ovl_set_ba1_uv(plane, p_uv_addr + offset1);
2727 }
2728
2729 if (dispc.feat->last_pixel_inc_missing)
2730 row_inc += pix_inc - 1;
2731
2732 dispc_ovl_set_row_inc(plane, row_inc);
2733 dispc_ovl_set_pix_inc(plane, pix_inc);
2734
2735 DSSDBG("%d,%d %dx%d -> %dx%d\n", pos_x, pos_y, in_width,
2736 in_height, out_width, out_height);
2737
2738 dispc_ovl_set_pos(plane, caps, pos_x, pos_y);
2739
2740 dispc_ovl_set_input_size(plane, in_width, in_height);
2741
2742 if (caps & OMAP_DSS_OVL_CAP_SCALE) {
2743 dispc_ovl_set_scaling(plane, in_width, in_height, out_width,
2744 out_height, ilace, five_taps, fieldmode,
2745 color_mode, rotation);
2746 dispc_ovl_set_output_size(plane, out_width, out_height);
2747 dispc_ovl_set_vid_color_conv(plane, cconv);
2748 }
2749
2750 dispc_ovl_set_rotation_attrs(plane, rotation, rotation_type, mirror,
2751 color_mode);
2752
2753 dispc_ovl_set_zorder(plane, caps, zorder);
2754 dispc_ovl_set_pre_mult_alpha(plane, caps, pre_mult_alpha);
2755 dispc_ovl_setup_global_alpha(plane, caps, global_alpha);
2756
2757 dispc_ovl_enable_replication(plane, caps, replication);
2758
2759 return 0;
2760}
2761
2762int dispc_ovl_setup(enum omap_plane plane, const struct omap_overlay_info *oi,
2763 bool replication, const struct omap_video_timings *mgr_timings,
2764 bool mem_to_mem)
2765{
2766 int r;
2767 enum omap_overlay_caps caps = dss_feat_get_overlay_caps(plane);
2768 enum omap_channel channel;
2769
2770 channel = dispc_ovl_get_channel_out(plane);
2771
2772 DSSDBG("dispc_ovl_setup %d, pa %pad, pa_uv %pad, sw %d, %d,%d, %dx%d ->"
2773 " %dx%d, cmode %x, rot %d, mir %d, chan %d repl %d\n",
2774 plane, &oi->paddr, &oi->p_uv_addr, oi->screen_width, oi->pos_x,
2775 oi->pos_y, oi->width, oi->height, oi->out_width, oi->out_height,
2776 oi->color_mode, oi->rotation, oi->mirror, channel, replication);
2777
2778 r = dispc_ovl_setup_common(plane, caps, oi->paddr, oi->p_uv_addr,
2779 oi->screen_width, oi->pos_x, oi->pos_y, oi->width, oi->height,
2780 oi->out_width, oi->out_height, oi->color_mode, oi->rotation,
2781 oi->mirror, oi->zorder, oi->pre_mult_alpha, oi->global_alpha,
2782 oi->rotation_type, replication, mgr_timings, mem_to_mem);
2783
2784 return r;
2785}
2786EXPORT_SYMBOL(dispc_ovl_setup);
2787
2788int dispc_wb_setup(const struct omap_dss_writeback_info *wi,
2789 bool mem_to_mem, const struct omap_video_timings *mgr_timings)
2790{
2791 int r;
2792 u32 l;
2793 enum omap_plane plane = OMAP_DSS_WB;
2794 const int pos_x = 0, pos_y = 0;
2795 const u8 zorder = 0, global_alpha = 0;
2796 const bool replication = false;
2797 bool truncation;
2798 int in_width = mgr_timings->x_res;
2799 int in_height = mgr_timings->y_res;
2800 enum omap_overlay_caps caps =
2801 OMAP_DSS_OVL_CAP_SCALE | OMAP_DSS_OVL_CAP_PRE_MULT_ALPHA;
2802
2803 DSSDBG("dispc_wb_setup, pa %x, pa_uv %x, %d,%d -> %dx%d, cmode %x, "
2804 "rot %d, mir %d\n", wi->paddr, wi->p_uv_addr, in_width,
2805 in_height, wi->width, wi->height, wi->color_mode, wi->rotation,
2806 wi->mirror);
2807
2808 r = dispc_ovl_setup_common(plane, caps, wi->paddr, wi->p_uv_addr,
2809 wi->buf_width, pos_x, pos_y, in_width, in_height, wi->width,
2810 wi->height, wi->color_mode, wi->rotation, wi->mirror, zorder,
2811 wi->pre_mult_alpha, global_alpha, wi->rotation_type,
2812 replication, mgr_timings, mem_to_mem);
2813
2814 switch (wi->color_mode) {
2815 case OMAP_DSS_COLOR_RGB16:
2816 case OMAP_DSS_COLOR_RGB24P:
2817 case OMAP_DSS_COLOR_ARGB16:
2818 case OMAP_DSS_COLOR_RGBA16:
2819 case OMAP_DSS_COLOR_RGB12U:
2820 case OMAP_DSS_COLOR_ARGB16_1555:
2821 case OMAP_DSS_COLOR_XRGB16_1555:
2822 case OMAP_DSS_COLOR_RGBX16:
2823 truncation = true;
2824 break;
2825 default:
2826 truncation = false;
2827 break;
2828 }
2829
2830 /* setup extra DISPC_WB_ATTRIBUTES */
2831 l = dispc_read_reg(DISPC_OVL_ATTRIBUTES(plane));
2832 l = FLD_MOD(l, truncation, 10, 10); /* TRUNCATIONENABLE */
2833 l = FLD_MOD(l, mem_to_mem, 19, 19); /* WRITEBACKMODE */
2834 if (mem_to_mem)
2835 l = FLD_MOD(l, 1, 26, 24); /* CAPTUREMODE */
2836 else
2837 l = FLD_MOD(l, 0, 26, 24); /* CAPTUREMODE */
2838 dispc_write_reg(DISPC_OVL_ATTRIBUTES(plane), l);
2839
2840 if (mem_to_mem) {
2841 /* WBDELAYCOUNT */
2842 REG_FLD_MOD(DISPC_OVL_ATTRIBUTES2(plane), 0, 7, 0);
2843 } else {
2844 int wbdelay;
2845
2846 wbdelay = min(mgr_timings->vfp + mgr_timings->vsw +
2847 mgr_timings->vbp, 255);
2848
2849 /* WBDELAYCOUNT */
2850 REG_FLD_MOD(DISPC_OVL_ATTRIBUTES2(plane), wbdelay, 7, 0);
2851 }
2852
2853 return r;
2854}
2855
2856int dispc_ovl_enable(enum omap_plane plane, bool enable)
2857{
2858 DSSDBG("dispc_enable_plane %d, %d\n", plane, enable);
2859
2860 REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), enable ? 1 : 0, 0, 0);
2861
2862 return 0;
2863}
2864EXPORT_SYMBOL(dispc_ovl_enable);
2865
2866bool dispc_ovl_enabled(enum omap_plane plane)
2867{
2868 return REG_GET(DISPC_OVL_ATTRIBUTES(plane), 0, 0);
2869}
2870EXPORT_SYMBOL(dispc_ovl_enabled);
2871
2872enum omap_dss_output_id dispc_mgr_get_supported_outputs(enum omap_channel channel)
2873{
2874 return dss_feat_get_supported_outputs(channel);
2875}
2876EXPORT_SYMBOL(dispc_mgr_get_supported_outputs);
2877
2878void dispc_mgr_enable(enum omap_channel channel, bool enable)
2879{
2880 mgr_fld_write(channel, DISPC_MGR_FLD_ENABLE, enable);
2881 /* flush posted write */
2882 mgr_fld_read(channel, DISPC_MGR_FLD_ENABLE);
2883}
2884EXPORT_SYMBOL(dispc_mgr_enable);
2885
2886bool dispc_mgr_is_enabled(enum omap_channel channel)
2887{
2888 return !!mgr_fld_read(channel, DISPC_MGR_FLD_ENABLE);
2889}
2890EXPORT_SYMBOL(dispc_mgr_is_enabled);
2891
2892void dispc_wb_enable(bool enable)
2893{
2894 dispc_ovl_enable(OMAP_DSS_WB, enable);
2895}
2896
2897bool dispc_wb_is_enabled(void)
2898{
2899 return dispc_ovl_enabled(OMAP_DSS_WB);
2900}
2901
2902static void dispc_lcd_enable_signal_polarity(bool act_high)
2903{
2904 if (!dss_has_feature(FEAT_LCDENABLEPOL))
2905 return;
2906
2907 REG_FLD_MOD(DISPC_CONTROL, act_high ? 1 : 0, 29, 29);
2908}
2909
2910void dispc_lcd_enable_signal(bool enable)
2911{
2912 if (!dss_has_feature(FEAT_LCDENABLESIGNAL))
2913 return;
2914
2915 REG_FLD_MOD(DISPC_CONTROL, enable ? 1 : 0, 28, 28);
2916}
2917
2918void dispc_pck_free_enable(bool enable)
2919{
2920 if (!dss_has_feature(FEAT_PCKFREEENABLE))
2921 return;
2922
2923 REG_FLD_MOD(DISPC_CONTROL, enable ? 1 : 0, 27, 27);
2924}
2925
2926static void dispc_mgr_enable_fifohandcheck(enum omap_channel channel, bool enable)
2927{
2928 mgr_fld_write(channel, DISPC_MGR_FLD_FIFOHANDCHECK, enable);
2929}
2930
2931
2932static void dispc_mgr_set_lcd_type_tft(enum omap_channel channel)
2933{
2934 mgr_fld_write(channel, DISPC_MGR_FLD_STNTFT, 1);
2935}
2936
2937static void dispc_set_loadmode(enum omap_dss_load_mode mode)
2938{
2939 REG_FLD_MOD(DISPC_CONFIG, mode, 2, 1);
2940}
2941
2942
2943static void dispc_mgr_set_default_color(enum omap_channel channel, u32 color)
2944{
2945 dispc_write_reg(DISPC_DEFAULT_COLOR(channel), color);
2946}
2947
2948static void dispc_mgr_set_trans_key(enum omap_channel ch,
2949 enum omap_dss_trans_key_type type,
2950 u32 trans_key)
2951{
2952 mgr_fld_write(ch, DISPC_MGR_FLD_TCKSELECTION, type);
2953
2954 dispc_write_reg(DISPC_TRANS_COLOR(ch), trans_key);
2955}
2956
2957static void dispc_mgr_enable_trans_key(enum omap_channel ch, bool enable)
2958{
2959 mgr_fld_write(ch, DISPC_MGR_FLD_TCKENABLE, enable);
2960}
2961
2962static void dispc_mgr_enable_alpha_fixed_zorder(enum omap_channel ch,
2963 bool enable)
2964{
2965 if (!dss_has_feature(FEAT_ALPHA_FIXED_ZORDER))
2966 return;
2967
2968 if (ch == OMAP_DSS_CHANNEL_LCD)
2969 REG_FLD_MOD(DISPC_CONFIG, enable, 18, 18);
2970 else if (ch == OMAP_DSS_CHANNEL_DIGIT)
2971 REG_FLD_MOD(DISPC_CONFIG, enable, 19, 19);
2972}
2973
2974void dispc_mgr_setup(enum omap_channel channel,
2975 const struct omap_overlay_manager_info *info)
2976{
2977 dispc_mgr_set_default_color(channel, info->default_color);
2978 dispc_mgr_set_trans_key(channel, info->trans_key_type, info->trans_key);
2979 dispc_mgr_enable_trans_key(channel, info->trans_enabled);
2980 dispc_mgr_enable_alpha_fixed_zorder(channel,
2981 info->partial_alpha_enabled);
2982 if (dss_has_feature(FEAT_CPR)) {
2983 dispc_mgr_enable_cpr(channel, info->cpr_enable);
2984 dispc_mgr_set_cpr_coef(channel, &info->cpr_coefs);
2985 }
2986}
2987EXPORT_SYMBOL(dispc_mgr_setup);
2988
2989static void dispc_mgr_set_tft_data_lines(enum omap_channel channel, u8 data_lines)
2990{
2991 int code;
2992
2993 switch (data_lines) {
2994 case 12:
2995 code = 0;
2996 break;
2997 case 16:
2998 code = 1;
2999 break;
3000 case 18:
3001 code = 2;
3002 break;
3003 case 24:
3004 code = 3;
3005 break;
3006 default:
3007 BUG();
3008 return;
3009 }
3010
3011 mgr_fld_write(channel, DISPC_MGR_FLD_TFTDATALINES, code);
3012}
3013
3014static void dispc_mgr_set_io_pad_mode(enum dss_io_pad_mode mode)
3015{
3016 u32 l;
3017 int gpout0, gpout1;
3018
3019 switch (mode) {
3020 case DSS_IO_PAD_MODE_RESET:
3021 gpout0 = 0;
3022 gpout1 = 0;
3023 break;
3024 case DSS_IO_PAD_MODE_RFBI:
3025 gpout0 = 1;
3026 gpout1 = 0;
3027 break;
3028 case DSS_IO_PAD_MODE_BYPASS:
3029 gpout0 = 1;
3030 gpout1 = 1;
3031 break;
3032 default:
3033 BUG();
3034 return;
3035 }
3036
3037 l = dispc_read_reg(DISPC_CONTROL);
3038 l = FLD_MOD(l, gpout0, 15, 15);
3039 l = FLD_MOD(l, gpout1, 16, 16);
3040 dispc_write_reg(DISPC_CONTROL, l);
3041}
3042
3043static void dispc_mgr_enable_stallmode(enum omap_channel channel, bool enable)
3044{
3045 mgr_fld_write(channel, DISPC_MGR_FLD_STALLMODE, enable);
3046}
3047
3048void dispc_mgr_set_lcd_config(enum omap_channel channel,
3049 const struct dss_lcd_mgr_config *config)
3050{
3051 dispc_mgr_set_io_pad_mode(config->io_pad_mode);
3052
3053 dispc_mgr_enable_stallmode(channel, config->stallmode);
3054 dispc_mgr_enable_fifohandcheck(channel, config->fifohandcheck);
3055
3056 dispc_mgr_set_clock_div(channel, &config->clock_info);
3057
3058 dispc_mgr_set_tft_data_lines(channel, config->video_port_width);
3059
3060 dispc_lcd_enable_signal_polarity(config->lcden_sig_polarity);
3061
3062 dispc_mgr_set_lcd_type_tft(channel);
3063}
3064EXPORT_SYMBOL(dispc_mgr_set_lcd_config);
3065
3066static bool _dispc_mgr_size_ok(u16 width, u16 height)
3067{
3068 return width <= dispc.feat->mgr_width_max &&
3069 height <= dispc.feat->mgr_height_max;
3070}
3071
3072static bool _dispc_lcd_timings_ok(int hsw, int hfp, int hbp,
3073 int vsw, int vfp, int vbp)
3074{
3075 if (hsw < 1 || hsw > dispc.feat->sw_max ||
3076 hfp < 1 || hfp > dispc.feat->hp_max ||
3077 hbp < 1 || hbp > dispc.feat->hp_max ||
3078 vsw < 1 || vsw > dispc.feat->sw_max ||
3079 vfp < 0 || vfp > dispc.feat->vp_max ||
3080 vbp < 0 || vbp > dispc.feat->vp_max)
3081 return false;
3082 return true;
3083}
3084
3085static bool _dispc_mgr_pclk_ok(enum omap_channel channel,
3086 unsigned long pclk)
3087{
3088 if (dss_mgr_is_lcd(channel))
3089 return pclk <= dispc.feat->max_lcd_pclk ? true : false;
3090 else
3091 return pclk <= dispc.feat->max_tv_pclk ? true : false;
3092}
3093
3094bool dispc_mgr_timings_ok(enum omap_channel channel,
3095 const struct omap_video_timings *timings)
3096{
3097 if (!_dispc_mgr_size_ok(timings->x_res, timings->y_res))
3098 return false;
3099
3100 if (!_dispc_mgr_pclk_ok(channel, timings->pixelclock))
3101 return false;
3102
3103 if (dss_mgr_is_lcd(channel)) {
3104 /* TODO: OMAP4+ supports interlace for LCD outputs */
3105 if (timings->interlace)
3106 return false;
3107
3108 if (!_dispc_lcd_timings_ok(timings->hsw, timings->hfp,
3109 timings->hbp, timings->vsw, timings->vfp,
3110 timings->vbp))
3111 return false;
3112 }
3113
3114 return true;
3115}
3116
3117static void _dispc_mgr_set_lcd_timings(enum omap_channel channel, int hsw,
3118 int hfp, int hbp, int vsw, int vfp, int vbp,
3119 enum omap_dss_signal_level vsync_level,
3120 enum omap_dss_signal_level hsync_level,
3121 enum omap_dss_signal_edge data_pclk_edge,
3122 enum omap_dss_signal_level de_level,
3123 enum omap_dss_signal_edge sync_pclk_edge)
3124
3125{
3126 u32 timing_h, timing_v, l;
3127 bool onoff, rf, ipc, vs, hs, de;
3128
3129 timing_h = FLD_VAL(hsw-1, dispc.feat->sw_start, 0) |
3130 FLD_VAL(hfp-1, dispc.feat->fp_start, 8) |
3131 FLD_VAL(hbp-1, dispc.feat->bp_start, 20);
3132 timing_v = FLD_VAL(vsw-1, dispc.feat->sw_start, 0) |
3133 FLD_VAL(vfp, dispc.feat->fp_start, 8) |
3134 FLD_VAL(vbp, dispc.feat->bp_start, 20);
3135
3136 dispc_write_reg(DISPC_TIMING_H(channel), timing_h);
3137 dispc_write_reg(DISPC_TIMING_V(channel), timing_v);
3138
3139 switch (vsync_level) {
3140 case OMAPDSS_SIG_ACTIVE_LOW:
3141 vs = true;
3142 break;
3143 case OMAPDSS_SIG_ACTIVE_HIGH:
3144 vs = false;
3145 break;
3146 default:
3147 BUG();
3148 }
3149
3150 switch (hsync_level) {
3151 case OMAPDSS_SIG_ACTIVE_LOW:
3152 hs = true;
3153 break;
3154 case OMAPDSS_SIG_ACTIVE_HIGH:
3155 hs = false;
3156 break;
3157 default:
3158 BUG();
3159 }
3160
3161 switch (de_level) {
3162 case OMAPDSS_SIG_ACTIVE_LOW:
3163 de = true;
3164 break;
3165 case OMAPDSS_SIG_ACTIVE_HIGH:
3166 de = false;
3167 break;
3168 default:
3169 BUG();
3170 }
3171
3172 switch (data_pclk_edge) {
3173 case OMAPDSS_DRIVE_SIG_RISING_EDGE:
3174 ipc = false;
3175 break;
3176 case OMAPDSS_DRIVE_SIG_FALLING_EDGE:
3177 ipc = true;
3178 break;
3179 default:
3180 BUG();
3181 }
3182
3183 /* always use the 'rf' setting */
3184 onoff = true;
3185
3186 switch (sync_pclk_edge) {
3187 case OMAPDSS_DRIVE_SIG_FALLING_EDGE:
3188 rf = false;
3189 break;
3190 case OMAPDSS_DRIVE_SIG_RISING_EDGE:
3191 rf = true;
3192 break;
3193 default:
3194 BUG();
3195 }
3196
3197 l = FLD_VAL(onoff, 17, 17) |
3198 FLD_VAL(rf, 16, 16) |
3199 FLD_VAL(de, 15, 15) |
3200 FLD_VAL(ipc, 14, 14) |
3201 FLD_VAL(hs, 13, 13) |
3202 FLD_VAL(vs, 12, 12);
3203
3204 /* always set ALIGN bit when available */
3205 if (dispc.feat->supports_sync_align)
3206 l |= (1 << 18);
3207
3208 dispc_write_reg(DISPC_POL_FREQ(channel), l);
3209
3210 if (dispc.syscon_pol) {
3211 const int shifts[] = {
3212 [OMAP_DSS_CHANNEL_LCD] = 0,
3213 [OMAP_DSS_CHANNEL_LCD2] = 1,
3214 [OMAP_DSS_CHANNEL_LCD3] = 2,
3215 };
3216
3217 u32 mask, val;
3218
3219 mask = (1 << 0) | (1 << 3) | (1 << 6);
3220 val = (rf << 0) | (ipc << 3) | (onoff << 6);
3221
3222 mask <<= 16 + shifts[channel];
3223 val <<= 16 + shifts[channel];
3224
3225 regmap_update_bits(dispc.syscon_pol, dispc.syscon_pol_offset,
3226 mask, val);
3227 }
3228}
3229
3230/* change name to mode? */
3231void dispc_mgr_set_timings(enum omap_channel channel,
3232 const struct omap_video_timings *timings)
3233{
3234 unsigned xtot, ytot;
3235 unsigned long ht, vt;
3236 struct omap_video_timings t = *timings;
3237
3238 DSSDBG("channel %d xres %u yres %u\n", channel, t.x_res, t.y_res);
3239
3240 if (!dispc_mgr_timings_ok(channel, &t)) {
3241 BUG();
3242 return;
3243 }
3244
3245 if (dss_mgr_is_lcd(channel)) {
3246 _dispc_mgr_set_lcd_timings(channel, t.hsw, t.hfp, t.hbp, t.vsw,
3247 t.vfp, t.vbp, t.vsync_level, t.hsync_level,
3248 t.data_pclk_edge, t.de_level, t.sync_pclk_edge);
3249
3250 xtot = t.x_res + t.hfp + t.hsw + t.hbp;
3251 ytot = t.y_res + t.vfp + t.vsw + t.vbp;
3252
3253 ht = timings->pixelclock / xtot;
3254 vt = timings->pixelclock / xtot / ytot;
3255
3256 DSSDBG("pck %u\n", timings->pixelclock);
3257 DSSDBG("hsw %d hfp %d hbp %d vsw %d vfp %d vbp %d\n",
3258 t.hsw, t.hfp, t.hbp, t.vsw, t.vfp, t.vbp);
3259 DSSDBG("vsync_level %d hsync_level %d data_pclk_edge %d de_level %d sync_pclk_edge %d\n",
3260 t.vsync_level, t.hsync_level, t.data_pclk_edge,
3261 t.de_level, t.sync_pclk_edge);
3262
3263 DSSDBG("hsync %luHz, vsync %luHz\n", ht, vt);
3264 } else {
3265 if (t.interlace)
3266 t.y_res /= 2;
3267
3268 if (dispc.feat->supports_double_pixel)
3269 REG_FLD_MOD(DISPC_CONTROL, t.double_pixel ? 1 : 0,
3270 19, 17);
3271 }
3272
3273 dispc_mgr_set_size(channel, t.x_res, t.y_res);
3274}
3275EXPORT_SYMBOL(dispc_mgr_set_timings);
3276
3277static void dispc_mgr_set_lcd_divisor(enum omap_channel channel, u16 lck_div,
3278 u16 pck_div)
3279{
3280 BUG_ON(lck_div < 1);
3281 BUG_ON(pck_div < 1);
3282
3283 dispc_write_reg(DISPC_DIVISORo(channel),
3284 FLD_VAL(lck_div, 23, 16) | FLD_VAL(pck_div, 7, 0));
3285
3286 if (!dss_has_feature(FEAT_CORE_CLK_DIV) &&
3287 channel == OMAP_DSS_CHANNEL_LCD)
3288 dispc.core_clk_rate = dispc_fclk_rate() / lck_div;
3289}
3290
3291static void dispc_mgr_get_lcd_divisor(enum omap_channel channel, int *lck_div,
3292 int *pck_div)
3293{
3294 u32 l;
3295 l = dispc_read_reg(DISPC_DIVISORo(channel));
3296 *lck_div = FLD_GET(l, 23, 16);
3297 *pck_div = FLD_GET(l, 7, 0);
3298}
3299
3300static unsigned long dispc_fclk_rate(void)
3301{
3302 struct dss_pll *pll;
3303 unsigned long r = 0;
3304
3305 switch (dss_get_dispc_clk_source()) {
3306 case OMAP_DSS_CLK_SRC_FCK:
3307 r = dss_get_dispc_clk_rate();
3308 break;
3309 case OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC:
3310 pll = dss_pll_find("dsi0");
3311 if (!pll)
3312 pll = dss_pll_find("video0");
3313
3314 r = pll->cinfo.clkout[0];
3315 break;
3316 case OMAP_DSS_CLK_SRC_DSI2_PLL_HSDIV_DISPC:
3317 pll = dss_pll_find("dsi1");
3318 if (!pll)
3319 pll = dss_pll_find("video1");
3320
3321 r = pll->cinfo.clkout[0];
3322 break;
3323 default:
3324 BUG();
3325 return 0;
3326 }
3327
3328 return r;
3329}
3330
3331static unsigned long dispc_mgr_lclk_rate(enum omap_channel channel)
3332{
3333 struct dss_pll *pll;
3334 int lcd;
3335 unsigned long r;
3336 u32 l;
3337
3338 if (dss_mgr_is_lcd(channel)) {
3339 l = dispc_read_reg(DISPC_DIVISORo(channel));
3340
3341 lcd = FLD_GET(l, 23, 16);
3342
3343 switch (dss_get_lcd_clk_source(channel)) {
3344 case OMAP_DSS_CLK_SRC_FCK:
3345 r = dss_get_dispc_clk_rate();
3346 break;
3347 case OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC:
3348 pll = dss_pll_find("dsi0");
3349 if (!pll)
3350 pll = dss_pll_find("video0");
3351
3352 r = pll->cinfo.clkout[0];
3353 break;
3354 case OMAP_DSS_CLK_SRC_DSI2_PLL_HSDIV_DISPC:
3355 pll = dss_pll_find("dsi1");
3356 if (!pll)
3357 pll = dss_pll_find("video1");
3358
3359 r = pll->cinfo.clkout[0];
3360 break;
3361 default:
3362 BUG();
3363 return 0;
3364 }
3365
3366 return r / lcd;
3367 } else {
3368 return dispc_fclk_rate();
3369 }
3370}
3371
3372static unsigned long dispc_mgr_pclk_rate(enum omap_channel channel)
3373{
3374 unsigned long r;
3375
3376 if (dss_mgr_is_lcd(channel)) {
3377 int pcd;
3378 u32 l;
3379
3380 l = dispc_read_reg(DISPC_DIVISORo(channel));
3381
3382 pcd = FLD_GET(l, 7, 0);
3383
3384 r = dispc_mgr_lclk_rate(channel);
3385
3386 return r / pcd;
3387 } else {
3388 return dispc.tv_pclk_rate;
3389 }
3390}
3391
3392void dispc_set_tv_pclk(unsigned long pclk)
3393{
3394 dispc.tv_pclk_rate = pclk;
3395}
3396
3397static unsigned long dispc_core_clk_rate(void)
3398{
3399 return dispc.core_clk_rate;
3400}
3401
3402static unsigned long dispc_plane_pclk_rate(enum omap_plane plane)
3403{
3404 enum omap_channel channel;
3405
3406 if (plane == OMAP_DSS_WB)
3407 return 0;
3408
3409 channel = dispc_ovl_get_channel_out(plane);
3410
3411 return dispc_mgr_pclk_rate(channel);
3412}
3413
3414static unsigned long dispc_plane_lclk_rate(enum omap_plane plane)
3415{
3416 enum omap_channel channel;
3417
3418 if (plane == OMAP_DSS_WB)
3419 return 0;
3420
3421 channel = dispc_ovl_get_channel_out(plane);
3422
3423 return dispc_mgr_lclk_rate(channel);
3424}
3425
3426static void dispc_dump_clocks_channel(struct seq_file *s, enum omap_channel channel)
3427{
3428 int lcd, pcd;
3429 enum omap_dss_clk_source lcd_clk_src;
3430
3431 seq_printf(s, "- %s -\n", mgr_desc[channel].name);
3432
3433 lcd_clk_src = dss_get_lcd_clk_source(channel);
3434
3435 seq_printf(s, "%s clk source = %s (%s)\n", mgr_desc[channel].name,
3436 dss_get_generic_clk_source_name(lcd_clk_src),
3437 dss_feat_get_clk_source_name(lcd_clk_src));
3438
3439 dispc_mgr_get_lcd_divisor(channel, &lcd, &pcd);
3440
3441 seq_printf(s, "lck\t\t%-16lulck div\t%u\n",
3442 dispc_mgr_lclk_rate(channel), lcd);
3443 seq_printf(s, "pck\t\t%-16lupck div\t%u\n",
3444 dispc_mgr_pclk_rate(channel), pcd);
3445}
3446
3447void dispc_dump_clocks(struct seq_file *s)
3448{
3449 int lcd;
3450 u32 l;
3451 enum omap_dss_clk_source dispc_clk_src = dss_get_dispc_clk_source();
3452
3453 if (dispc_runtime_get())
3454 return;
3455
3456 seq_printf(s, "- DISPC -\n");
3457
3458 seq_printf(s, "dispc fclk source = %s (%s)\n",
3459 dss_get_generic_clk_source_name(dispc_clk_src),
3460 dss_feat_get_clk_source_name(dispc_clk_src));
3461
3462 seq_printf(s, "fck\t\t%-16lu\n", dispc_fclk_rate());
3463
3464 if (dss_has_feature(FEAT_CORE_CLK_DIV)) {
3465 seq_printf(s, "- DISPC-CORE-CLK -\n");
3466 l = dispc_read_reg(DISPC_DIVISOR);
3467 lcd = FLD_GET(l, 23, 16);
3468
3469 seq_printf(s, "lck\t\t%-16lulck div\t%u\n",
3470 (dispc_fclk_rate()/lcd), lcd);
3471 }
3472
3473 dispc_dump_clocks_channel(s, OMAP_DSS_CHANNEL_LCD);
3474
3475 if (dss_has_feature(FEAT_MGR_LCD2))
3476 dispc_dump_clocks_channel(s, OMAP_DSS_CHANNEL_LCD2);
3477 if (dss_has_feature(FEAT_MGR_LCD3))
3478 dispc_dump_clocks_channel(s, OMAP_DSS_CHANNEL_LCD3);
3479
3480 dispc_runtime_put();
3481}
3482
3483static void dispc_dump_regs(struct seq_file *s)
3484{
3485 int i, j;
3486 const char *mgr_names[] = {
3487 [OMAP_DSS_CHANNEL_LCD] = "LCD",
3488 [OMAP_DSS_CHANNEL_DIGIT] = "TV",
3489 [OMAP_DSS_CHANNEL_LCD2] = "LCD2",
3490 [OMAP_DSS_CHANNEL_LCD3] = "LCD3",
3491 };
3492 const char *ovl_names[] = {
3493 [OMAP_DSS_GFX] = "GFX",
3494 [OMAP_DSS_VIDEO1] = "VID1",
3495 [OMAP_DSS_VIDEO2] = "VID2",
3496 [OMAP_DSS_VIDEO3] = "VID3",
3497 [OMAP_DSS_WB] = "WB",
3498 };
3499 const char **p_names;
3500
3501#define DUMPREG(r) seq_printf(s, "%-50s %08x\n", #r, dispc_read_reg(r))
3502
3503 if (dispc_runtime_get())
3504 return;
3505
3506 /* DISPC common registers */
3507 DUMPREG(DISPC_REVISION);
3508 DUMPREG(DISPC_SYSCONFIG);
3509 DUMPREG(DISPC_SYSSTATUS);
3510 DUMPREG(DISPC_IRQSTATUS);
3511 DUMPREG(DISPC_IRQENABLE);
3512 DUMPREG(DISPC_CONTROL);
3513 DUMPREG(DISPC_CONFIG);
3514 DUMPREG(DISPC_CAPABLE);
3515 DUMPREG(DISPC_LINE_STATUS);
3516 DUMPREG(DISPC_LINE_NUMBER);
3517 if (dss_has_feature(FEAT_ALPHA_FIXED_ZORDER) ||
3518 dss_has_feature(FEAT_ALPHA_FREE_ZORDER))
3519 DUMPREG(DISPC_GLOBAL_ALPHA);
3520 if (dss_has_feature(FEAT_MGR_LCD2)) {
3521 DUMPREG(DISPC_CONTROL2);
3522 DUMPREG(DISPC_CONFIG2);
3523 }
3524 if (dss_has_feature(FEAT_MGR_LCD3)) {
3525 DUMPREG(DISPC_CONTROL3);
3526 DUMPREG(DISPC_CONFIG3);
3527 }
3528 if (dss_has_feature(FEAT_MFLAG))
3529 DUMPREG(DISPC_GLOBAL_MFLAG_ATTRIBUTE);
3530
3531#undef DUMPREG
3532
3533#define DISPC_REG(i, name) name(i)
3534#define DUMPREG(i, r) seq_printf(s, "%s(%s)%*s %08x\n", #r, p_names[i], \
3535 (int)(48 - strlen(#r) - strlen(p_names[i])), " ", \
3536 dispc_read_reg(DISPC_REG(i, r)))
3537
3538 p_names = mgr_names;
3539
3540 /* DISPC channel specific registers */
3541 for (i = 0; i < dss_feat_get_num_mgrs(); i++) {
3542 DUMPREG(i, DISPC_DEFAULT_COLOR);
3543 DUMPREG(i, DISPC_TRANS_COLOR);
3544 DUMPREG(i, DISPC_SIZE_MGR);
3545
3546 if (i == OMAP_DSS_CHANNEL_DIGIT)
3547 continue;
3548
3549 DUMPREG(i, DISPC_TIMING_H);
3550 DUMPREG(i, DISPC_TIMING_V);
3551 DUMPREG(i, DISPC_POL_FREQ);
3552 DUMPREG(i, DISPC_DIVISORo);
3553
3554 DUMPREG(i, DISPC_DATA_CYCLE1);
3555 DUMPREG(i, DISPC_DATA_CYCLE2);
3556 DUMPREG(i, DISPC_DATA_CYCLE3);
3557
3558 if (dss_has_feature(FEAT_CPR)) {
3559 DUMPREG(i, DISPC_CPR_COEF_R);
3560 DUMPREG(i, DISPC_CPR_COEF_G);
3561 DUMPREG(i, DISPC_CPR_COEF_B);
3562 }
3563 }
3564
3565 p_names = ovl_names;
3566
3567 for (i = 0; i < dss_feat_get_num_ovls(); i++) {
3568 DUMPREG(i, DISPC_OVL_BA0);
3569 DUMPREG(i, DISPC_OVL_BA1);
3570 DUMPREG(i, DISPC_OVL_POSITION);
3571 DUMPREG(i, DISPC_OVL_SIZE);
3572 DUMPREG(i, DISPC_OVL_ATTRIBUTES);
3573 DUMPREG(i, DISPC_OVL_FIFO_THRESHOLD);
3574 DUMPREG(i, DISPC_OVL_FIFO_SIZE_STATUS);
3575 DUMPREG(i, DISPC_OVL_ROW_INC);
3576 DUMPREG(i, DISPC_OVL_PIXEL_INC);
3577
3578 if (dss_has_feature(FEAT_PRELOAD))
3579 DUMPREG(i, DISPC_OVL_PRELOAD);
3580 if (dss_has_feature(FEAT_MFLAG))
3581 DUMPREG(i, DISPC_OVL_MFLAG_THRESHOLD);
3582
3583 if (i == OMAP_DSS_GFX) {
3584 DUMPREG(i, DISPC_OVL_WINDOW_SKIP);
3585 DUMPREG(i, DISPC_OVL_TABLE_BA);
3586 continue;
3587 }
3588
3589 DUMPREG(i, DISPC_OVL_FIR);
3590 DUMPREG(i, DISPC_OVL_PICTURE_SIZE);
3591 DUMPREG(i, DISPC_OVL_ACCU0);
3592 DUMPREG(i, DISPC_OVL_ACCU1);
3593 if (dss_has_feature(FEAT_HANDLE_UV_SEPARATE)) {
3594 DUMPREG(i, DISPC_OVL_BA0_UV);
3595 DUMPREG(i, DISPC_OVL_BA1_UV);
3596 DUMPREG(i, DISPC_OVL_FIR2);
3597 DUMPREG(i, DISPC_OVL_ACCU2_0);
3598 DUMPREG(i, DISPC_OVL_ACCU2_1);
3599 }
3600 if (dss_has_feature(FEAT_ATTR2))
3601 DUMPREG(i, DISPC_OVL_ATTRIBUTES2);
3602 }
3603
3604 if (dispc.feat->has_writeback) {
3605 i = OMAP_DSS_WB;
3606 DUMPREG(i, DISPC_OVL_BA0);
3607 DUMPREG(i, DISPC_OVL_BA1);
3608 DUMPREG(i, DISPC_OVL_SIZE);
3609 DUMPREG(i, DISPC_OVL_ATTRIBUTES);
3610 DUMPREG(i, DISPC_OVL_FIFO_THRESHOLD);
3611 DUMPREG(i, DISPC_OVL_FIFO_SIZE_STATUS);
3612 DUMPREG(i, DISPC_OVL_ROW_INC);
3613 DUMPREG(i, DISPC_OVL_PIXEL_INC);
3614
3615 if (dss_has_feature(FEAT_MFLAG))
3616 DUMPREG(i, DISPC_OVL_MFLAG_THRESHOLD);
3617
3618 DUMPREG(i, DISPC_OVL_FIR);
3619 DUMPREG(i, DISPC_OVL_PICTURE_SIZE);
3620 DUMPREG(i, DISPC_OVL_ACCU0);
3621 DUMPREG(i, DISPC_OVL_ACCU1);
3622 if (dss_has_feature(FEAT_HANDLE_UV_SEPARATE)) {
3623 DUMPREG(i, DISPC_OVL_BA0_UV);
3624 DUMPREG(i, DISPC_OVL_BA1_UV);
3625 DUMPREG(i, DISPC_OVL_FIR2);
3626 DUMPREG(i, DISPC_OVL_ACCU2_0);
3627 DUMPREG(i, DISPC_OVL_ACCU2_1);
3628 }
3629 if (dss_has_feature(FEAT_ATTR2))
3630 DUMPREG(i, DISPC_OVL_ATTRIBUTES2);
3631 }
3632
3633#undef DISPC_REG
3634#undef DUMPREG
3635
3636#define DISPC_REG(plane, name, i) name(plane, i)
3637#define DUMPREG(plane, name, i) \
3638 seq_printf(s, "%s_%d(%s)%*s %08x\n", #name, i, p_names[plane], \
3639 (int)(46 - strlen(#name) - strlen(p_names[plane])), " ", \
3640 dispc_read_reg(DISPC_REG(plane, name, i)))
3641
3642 /* Video pipeline coefficient registers */
3643
3644 /* start from OMAP_DSS_VIDEO1 */
3645 for (i = 1; i < dss_feat_get_num_ovls(); i++) {
3646 for (j = 0; j < 8; j++)
3647 DUMPREG(i, DISPC_OVL_FIR_COEF_H, j);
3648
3649 for (j = 0; j < 8; j++)
3650 DUMPREG(i, DISPC_OVL_FIR_COEF_HV, j);
3651
3652 for (j = 0; j < 5; j++)
3653 DUMPREG(i, DISPC_OVL_CONV_COEF, j);
3654
3655 if (dss_has_feature(FEAT_FIR_COEF_V)) {
3656 for (j = 0; j < 8; j++)
3657 DUMPREG(i, DISPC_OVL_FIR_COEF_V, j);
3658 }
3659
3660 if (dss_has_feature(FEAT_HANDLE_UV_SEPARATE)) {
3661 for (j = 0; j < 8; j++)
3662 DUMPREG(i, DISPC_OVL_FIR_COEF_H2, j);
3663
3664 for (j = 0; j < 8; j++)
3665 DUMPREG(i, DISPC_OVL_FIR_COEF_HV2, j);
3666
3667 for (j = 0; j < 8; j++)
3668 DUMPREG(i, DISPC_OVL_FIR_COEF_V2, j);
3669 }
3670 }
3671
3672 dispc_runtime_put();
3673
3674#undef DISPC_REG
3675#undef DUMPREG
3676}
3677
3678/* calculate clock rates using dividers in cinfo */
3679int dispc_calc_clock_rates(unsigned long dispc_fclk_rate,
3680 struct dispc_clock_info *cinfo)
3681{
3682 if (cinfo->lck_div > 255 || cinfo->lck_div == 0)
3683 return -EINVAL;
3684 if (cinfo->pck_div < 1 || cinfo->pck_div > 255)
3685 return -EINVAL;
3686
3687 cinfo->lck = dispc_fclk_rate / cinfo->lck_div;
3688 cinfo->pck = cinfo->lck / cinfo->pck_div;
3689
3690 return 0;
3691}
3692
3693bool dispc_div_calc(unsigned long dispc,
3694 unsigned long pck_min, unsigned long pck_max,
3695 dispc_div_calc_func func, void *data)
3696{
3697 int lckd, lckd_start, lckd_stop;
3698 int pckd, pckd_start, pckd_stop;
3699 unsigned long pck, lck;
3700 unsigned long lck_max;
3701 unsigned long pckd_hw_min, pckd_hw_max;
3702 unsigned min_fck_per_pck;
3703 unsigned long fck;
3704
3705#ifdef CONFIG_OMAP2_DSS_MIN_FCK_PER_PCK
3706 min_fck_per_pck = CONFIG_OMAP2_DSS_MIN_FCK_PER_PCK;
3707#else
3708 min_fck_per_pck = 0;
3709#endif
3710
3711 pckd_hw_min = dss_feat_get_param_min(FEAT_PARAM_DSS_PCD);
3712 pckd_hw_max = dss_feat_get_param_max(FEAT_PARAM_DSS_PCD);
3713
3714 lck_max = dss_feat_get_param_max(FEAT_PARAM_DSS_FCK);
3715
3716 pck_min = pck_min ? pck_min : 1;
3717 pck_max = pck_max ? pck_max : ULONG_MAX;
3718
3719 lckd_start = max(DIV_ROUND_UP(dispc, lck_max), 1ul);
3720 lckd_stop = min(dispc / pck_min, 255ul);
3721
3722 for (lckd = lckd_start; lckd <= lckd_stop; ++lckd) {
3723 lck = dispc / lckd;
3724
3725 pckd_start = max(DIV_ROUND_UP(lck, pck_max), pckd_hw_min);
3726 pckd_stop = min(lck / pck_min, pckd_hw_max);
3727
3728 for (pckd = pckd_start; pckd <= pckd_stop; ++pckd) {
3729 pck = lck / pckd;
3730
3731 /*
3732 * For OMAP2/3 the DISPC fclk is the same as LCD's logic
3733 * clock, which means we're configuring DISPC fclk here
3734 * also. Thus we need to use the calculated lck. For
3735 * OMAP4+ the DISPC fclk is a separate clock.
3736 */
3737 if (dss_has_feature(FEAT_CORE_CLK_DIV))
3738 fck = dispc_core_clk_rate();
3739 else
3740 fck = lck;
3741
3742 if (fck < pck * min_fck_per_pck)
3743 continue;
3744
3745 if (func(lckd, pckd, lck, pck, data))
3746 return true;
3747 }
3748 }
3749
3750 return false;
3751}
3752
3753void dispc_mgr_set_clock_div(enum omap_channel channel,
3754 const struct dispc_clock_info *cinfo)
3755{
3756 DSSDBG("lck = %lu (%u)\n", cinfo->lck, cinfo->lck_div);
3757 DSSDBG("pck = %lu (%u)\n", cinfo->pck, cinfo->pck_div);
3758
3759 dispc_mgr_set_lcd_divisor(channel, cinfo->lck_div, cinfo->pck_div);
3760}
3761
3762int dispc_mgr_get_clock_div(enum omap_channel channel,
3763 struct dispc_clock_info *cinfo)
3764{
3765 unsigned long fck;
3766
3767 fck = dispc_fclk_rate();
3768
3769 cinfo->lck_div = REG_GET(DISPC_DIVISORo(channel), 23, 16);
3770 cinfo->pck_div = REG_GET(DISPC_DIVISORo(channel), 7, 0);
3771
3772 cinfo->lck = fck / cinfo->lck_div;
3773 cinfo->pck = cinfo->lck / cinfo->pck_div;
3774
3775 return 0;
3776}
3777
3778u32 dispc_read_irqstatus(void)
3779{
3780 return dispc_read_reg(DISPC_IRQSTATUS);
3781}
3782EXPORT_SYMBOL(dispc_read_irqstatus);
3783
3784void dispc_clear_irqstatus(u32 mask)
3785{
3786 dispc_write_reg(DISPC_IRQSTATUS, mask);
3787}
3788EXPORT_SYMBOL(dispc_clear_irqstatus);
3789
3790u32 dispc_read_irqenable(void)
3791{
3792 return dispc_read_reg(DISPC_IRQENABLE);
3793}
3794EXPORT_SYMBOL(dispc_read_irqenable);
3795
3796void dispc_write_irqenable(u32 mask)
3797{
3798 u32 old_mask = dispc_read_reg(DISPC_IRQENABLE);
3799
3800 /* clear the irqstatus for newly enabled irqs */
3801 dispc_clear_irqstatus((mask ^ old_mask) & mask);
3802
3803 dispc_write_reg(DISPC_IRQENABLE, mask);
3804}
3805EXPORT_SYMBOL(dispc_write_irqenable);
3806
3807void dispc_enable_sidle(void)
3808{
3809 REG_FLD_MOD(DISPC_SYSCONFIG, 2, 4, 3); /* SIDLEMODE: smart idle */
3810}
3811
3812void dispc_disable_sidle(void)
3813{
3814 REG_FLD_MOD(DISPC_SYSCONFIG, 1, 4, 3); /* SIDLEMODE: no idle */
3815}
3816
3817static void _omap_dispc_initial_config(void)
3818{
3819 u32 l;
3820
3821 /* Exclusively enable DISPC_CORE_CLK and set divider to 1 */
3822 if (dss_has_feature(FEAT_CORE_CLK_DIV)) {
3823 l = dispc_read_reg(DISPC_DIVISOR);
3824 /* Use DISPC_DIVISOR.LCD, instead of DISPC_DIVISOR1.LCD */
3825 l = FLD_MOD(l, 1, 0, 0);
3826 l = FLD_MOD(l, 1, 23, 16);
3827 dispc_write_reg(DISPC_DIVISOR, l);
3828
3829 dispc.core_clk_rate = dispc_fclk_rate();
3830 }
3831
3832 /* FUNCGATED */
3833 if (dss_has_feature(FEAT_FUNCGATED))
3834 REG_FLD_MOD(DISPC_CONFIG, 1, 9, 9);
3835
3836 dispc_setup_color_conv_coef();
3837
3838 dispc_set_loadmode(OMAP_DSS_LOAD_FRAME_ONLY);
3839
3840 dispc_init_fifos();
3841
3842 dispc_configure_burst_sizes();
3843
3844 dispc_ovl_enable_zorder_planes();
3845
3846 if (dispc.feat->mstandby_workaround)
3847 REG_FLD_MOD(DISPC_MSTANDBY_CTRL, 1, 0, 0);
3848
3849 if (dss_has_feature(FEAT_MFLAG))
3850 dispc_init_mflag();
3851}
3852
3853static const struct dispc_features omap24xx_dispc_feats = {
3854 .sw_start = 5,
3855 .fp_start = 15,
3856 .bp_start = 27,
3857 .sw_max = 64,
3858 .vp_max = 255,
3859 .hp_max = 256,
3860 .mgr_width_start = 10,
3861 .mgr_height_start = 26,
3862 .mgr_width_max = 2048,
3863 .mgr_height_max = 2048,
3864 .max_lcd_pclk = 66500000,
3865 .calc_scaling = dispc_ovl_calc_scaling_24xx,
3866 .calc_core_clk = calc_core_clk_24xx,
3867 .num_fifos = 3,
3868 .no_framedone_tv = true,
3869 .set_max_preload = false,
3870 .last_pixel_inc_missing = true,
3871};
3872
3873static const struct dispc_features omap34xx_rev1_0_dispc_feats = {
3874 .sw_start = 5,
3875 .fp_start = 15,
3876 .bp_start = 27,
3877 .sw_max = 64,
3878 .vp_max = 255,
3879 .hp_max = 256,
3880 .mgr_width_start = 10,
3881 .mgr_height_start = 26,
3882 .mgr_width_max = 2048,
3883 .mgr_height_max = 2048,
3884 .max_lcd_pclk = 173000000,
3885 .max_tv_pclk = 59000000,
3886 .calc_scaling = dispc_ovl_calc_scaling_34xx,
3887 .calc_core_clk = calc_core_clk_34xx,
3888 .num_fifos = 3,
3889 .no_framedone_tv = true,
3890 .set_max_preload = false,
3891 .last_pixel_inc_missing = true,
3892};
3893
3894static const struct dispc_features omap34xx_rev3_0_dispc_feats = {
3895 .sw_start = 7,
3896 .fp_start = 19,
3897 .bp_start = 31,
3898 .sw_max = 256,
3899 .vp_max = 4095,
3900 .hp_max = 4096,
3901 .mgr_width_start = 10,
3902 .mgr_height_start = 26,
3903 .mgr_width_max = 2048,
3904 .mgr_height_max = 2048,
3905 .max_lcd_pclk = 173000000,
3906 .max_tv_pclk = 59000000,
3907 .calc_scaling = dispc_ovl_calc_scaling_34xx,
3908 .calc_core_clk = calc_core_clk_34xx,
3909 .num_fifos = 3,
3910 .no_framedone_tv = true,
3911 .set_max_preload = false,
3912 .last_pixel_inc_missing = true,
3913};
3914
3915static const struct dispc_features omap44xx_dispc_feats = {
3916 .sw_start = 7,
3917 .fp_start = 19,
3918 .bp_start = 31,
3919 .sw_max = 256,
3920 .vp_max = 4095,
3921 .hp_max = 4096,
3922 .mgr_width_start = 10,
3923 .mgr_height_start = 26,
3924 .mgr_width_max = 2048,
3925 .mgr_height_max = 2048,
3926 .max_lcd_pclk = 170000000,
3927 .max_tv_pclk = 185625000,
3928 .calc_scaling = dispc_ovl_calc_scaling_44xx,
3929 .calc_core_clk = calc_core_clk_44xx,
3930 .num_fifos = 5,
3931 .gfx_fifo_workaround = true,
3932 .set_max_preload = true,
3933 .supports_sync_align = true,
3934 .has_writeback = true,
3935 .supports_double_pixel = true,
3936 .reverse_ilace_field_order = true,
3937};
3938
3939static const struct dispc_features omap54xx_dispc_feats = {
3940 .sw_start = 7,
3941 .fp_start = 19,
3942 .bp_start = 31,
3943 .sw_max = 256,
3944 .vp_max = 4095,
3945 .hp_max = 4096,
3946 .mgr_width_start = 11,
3947 .mgr_height_start = 27,
3948 .mgr_width_max = 4096,
3949 .mgr_height_max = 4096,
3950 .max_lcd_pclk = 170000000,
3951 .max_tv_pclk = 186000000,
3952 .calc_scaling = dispc_ovl_calc_scaling_44xx,
3953 .calc_core_clk = calc_core_clk_44xx,
3954 .num_fifos = 5,
3955 .gfx_fifo_workaround = true,
3956 .mstandby_workaround = true,
3957 .set_max_preload = true,
3958 .supports_sync_align = true,
3959 .has_writeback = true,
3960 .supports_double_pixel = true,
3961 .reverse_ilace_field_order = true,
3962};
3963
3964static int dispc_init_features(struct platform_device *pdev)
3965{
3966 const struct dispc_features *src;
3967 struct dispc_features *dst;
3968
3969 dst = devm_kzalloc(&pdev->dev, sizeof(*dst), GFP_KERNEL);
3970 if (!dst) {
3971 dev_err(&pdev->dev, "Failed to allocate DISPC Features\n");
3972 return -ENOMEM;
3973 }
3974
3975 switch (omapdss_get_version()) {
3976 case OMAPDSS_VER_OMAP24xx:
3977 src = &omap24xx_dispc_feats;
3978 break;
3979
3980 case OMAPDSS_VER_OMAP34xx_ES1:
3981 src = &omap34xx_rev1_0_dispc_feats;
3982 break;
3983
3984 case OMAPDSS_VER_OMAP34xx_ES3:
3985 case OMAPDSS_VER_OMAP3630:
3986 case OMAPDSS_VER_AM35xx:
3987 case OMAPDSS_VER_AM43xx:
3988 src = &omap34xx_rev3_0_dispc_feats;
3989 break;
3990
3991 case OMAPDSS_VER_OMAP4430_ES1:
3992 case OMAPDSS_VER_OMAP4430_ES2:
3993 case OMAPDSS_VER_OMAP4:
3994 src = &omap44xx_dispc_feats;
3995 break;
3996
3997 case OMAPDSS_VER_OMAP5:
3998 case OMAPDSS_VER_DRA7xx:
3999 src = &omap54xx_dispc_feats;
4000 break;
4001
4002 default:
4003 return -ENODEV;
4004 }
4005
4006 memcpy(dst, src, sizeof(*dst));
4007 dispc.feat = dst;
4008
4009 return 0;
4010}
4011
4012static irqreturn_t dispc_irq_handler(int irq, void *arg)
4013{
4014 if (!dispc.is_enabled)
4015 return IRQ_NONE;
4016
4017 return dispc.user_handler(irq, dispc.user_data);
4018}
4019
4020int dispc_request_irq(irq_handler_t handler, void *dev_id)
4021{
4022 int r;
4023
4024 if (dispc.user_handler != NULL)
4025 return -EBUSY;
4026
4027 dispc.user_handler = handler;
4028 dispc.user_data = dev_id;
4029
4030 /* ensure the dispc_irq_handler sees the values above */
4031 smp_wmb();
4032
4033 r = devm_request_irq(&dispc.pdev->dev, dispc.irq, dispc_irq_handler,
4034 IRQF_SHARED, "OMAP DISPC", &dispc);
4035 if (r) {
4036 dispc.user_handler = NULL;
4037 dispc.user_data = NULL;
4038 }
4039
4040 return r;
4041}
4042EXPORT_SYMBOL(dispc_request_irq);
4043
4044void dispc_free_irq(void *dev_id)
4045{
4046 devm_free_irq(&dispc.pdev->dev, dispc.irq, &dispc);
4047
4048 dispc.user_handler = NULL;
4049 dispc.user_data = NULL;
4050}
4051EXPORT_SYMBOL(dispc_free_irq);
4052
4053/* DISPC HW IP initialisation */
4054static int dispc_bind(struct device *dev, struct device *master, void *data)
4055{
4056 struct platform_device *pdev = to_platform_device(dev);
4057 u32 rev;
4058 int r = 0;
4059 struct resource *dispc_mem;
4060 struct device_node *np = pdev->dev.of_node;
4061
4062 dispc.pdev = pdev;
4063
4064 spin_lock_init(&dispc.control_lock);
4065
4066 r = dispc_init_features(dispc.pdev);
4067 if (r)
4068 return r;
4069
4070 dispc_mem = platform_get_resource(dispc.pdev, IORESOURCE_MEM, 0);
4071 if (!dispc_mem) {
4072 DSSERR("can't get IORESOURCE_MEM DISPC\n");
4073 return -EINVAL;
4074 }
4075
4076 dispc.base = devm_ioremap(&pdev->dev, dispc_mem->start,
4077 resource_size(dispc_mem));
4078 if (!dispc.base) {
4079 DSSERR("can't ioremap DISPC\n");
4080 return -ENOMEM;
4081 }
4082
4083 dispc.irq = platform_get_irq(dispc.pdev, 0);
4084 if (dispc.irq < 0) {
4085 DSSERR("platform_get_irq failed\n");
4086 return -ENODEV;
4087 }
4088
4089 if (np && of_property_read_bool(np, "syscon-pol")) {
4090 dispc.syscon_pol = syscon_regmap_lookup_by_phandle(np, "syscon-pol");
4091 if (IS_ERR(dispc.syscon_pol)) {
4092 dev_err(&pdev->dev, "failed to get syscon-pol regmap\n");
4093 return PTR_ERR(dispc.syscon_pol);
4094 }
4095
4096 if (of_property_read_u32_index(np, "syscon-pol", 1,
4097 &dispc.syscon_pol_offset)) {
4098 dev_err(&pdev->dev, "failed to get syscon-pol offset\n");
4099 return -EINVAL;
4100 }
4101 }
4102
4103 pm_runtime_enable(&pdev->dev);
4104
4105 r = dispc_runtime_get();
4106 if (r)
4107 goto err_runtime_get;
4108
4109 _omap_dispc_initial_config();
4110
4111 rev = dispc_read_reg(DISPC_REVISION);
4112 dev_dbg(&pdev->dev, "OMAP DISPC rev %d.%d\n",
4113 FLD_GET(rev, 7, 4), FLD_GET(rev, 3, 0));
4114
4115 dispc_runtime_put();
4116
4117 dss_debugfs_create_file("dispc", dispc_dump_regs);
4118
4119 return 0;
4120
4121err_runtime_get:
4122 pm_runtime_disable(&pdev->dev);
4123 return r;
4124}
4125
4126static void dispc_unbind(struct device *dev, struct device *master,
4127 void *data)
4128{
4129 pm_runtime_disable(dev);
4130}
4131
4132static const struct component_ops dispc_component_ops = {
4133 .bind = dispc_bind,
4134 .unbind = dispc_unbind,
4135};
4136
4137static int dispc_probe(struct platform_device *pdev)
4138{
4139 return component_add(&pdev->dev, &dispc_component_ops);
4140}
4141
4142static int dispc_remove(struct platform_device *pdev)
4143{
4144 component_del(&pdev->dev, &dispc_component_ops);
4145 return 0;
4146}
4147
4148static int dispc_runtime_suspend(struct device *dev)
4149{
4150 dispc.is_enabled = false;
4151 /* ensure the dispc_irq_handler sees the is_enabled value */
4152 smp_wmb();
4153 /* wait for current handler to finish before turning the DISPC off */
4154 synchronize_irq(dispc.irq);
4155
4156 dispc_save_context();
4157
4158 return 0;
4159}
4160
4161static int dispc_runtime_resume(struct device *dev)
4162{
4163 /*
4164 * The reset value for load mode is 0 (OMAP_DSS_LOAD_CLUT_AND_FRAME)
4165 * but we always initialize it to 2 (OMAP_DSS_LOAD_FRAME_ONLY) in
4166 * _omap_dispc_initial_config(). We can thus use it to detect if
4167 * we have lost register context.
4168 */
4169 if (REG_GET(DISPC_CONFIG, 2, 1) != OMAP_DSS_LOAD_FRAME_ONLY) {
4170 _omap_dispc_initial_config();
4171
4172 dispc_restore_context();
4173 }
4174
4175 dispc.is_enabled = true;
4176 /* ensure the dispc_irq_handler sees the is_enabled value */
4177 smp_wmb();
4178
4179 return 0;
4180}
4181
4182static const struct dev_pm_ops dispc_pm_ops = {
4183 .runtime_suspend = dispc_runtime_suspend,
4184 .runtime_resume = dispc_runtime_resume,
4185};
4186
4187static const struct of_device_id dispc_of_match[] = {
4188 { .compatible = "ti,omap2-dispc", },
4189 { .compatible = "ti,omap3-dispc", },
4190 { .compatible = "ti,omap4-dispc", },
4191 { .compatible = "ti,omap5-dispc", },
4192 { .compatible = "ti,dra7-dispc", },
4193 {},
4194};
4195
4196static struct platform_driver omap_dispchw_driver = {
4197 .probe = dispc_probe,
4198 .remove = dispc_remove,
4199 .driver = {
4200 .name = "omapdss_dispc",
4201 .pm = &dispc_pm_ops,
4202 .of_match_table = dispc_of_match,
4203 .suppress_bind_attrs = true,
4204 },
4205};
4206
4207int __init dispc_init_platform_driver(void)
4208{
4209 return platform_driver_register(&omap_dispchw_driver);
4210}
4211
4212void dispc_uninit_platform_driver(void)
4213{
4214 platform_driver_unregister(&omap_dispchw_driver);
4215}
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) 2009 Nokia Corporation
4 * Author: Tomi Valkeinen <tomi.valkeinen@ti.com>
5 *
6 * Some code and ideas taken from drivers/video/omap/ driver
7 * by Imre Deak.
8 */
9
10#define DSS_SUBSYS_NAME "DISPC"
11
12#include <linux/kernel.h>
13#include <linux/dma-mapping.h>
14#include <linux/vmalloc.h>
15#include <linux/export.h>
16#include <linux/clk.h>
17#include <linux/io.h>
18#include <linux/jiffies.h>
19#include <linux/seq_file.h>
20#include <linux/delay.h>
21#include <linux/workqueue.h>
22#include <linux/hardirq.h>
23#include <linux/platform_device.h>
24#include <linux/pm_runtime.h>
25#include <linux/sizes.h>
26#include <linux/mfd/syscon.h>
27#include <linux/regmap.h>
28#include <linux/of.h>
29#include <linux/of_device.h>
30#include <linux/component.h>
31#include <linux/sys_soc.h>
32#include <drm/drm_fourcc.h>
33#include <drm/drm_blend.h>
34
35#include "omapdss.h"
36#include "dss.h"
37#include "dispc.h"
38
39struct dispc_device;
40
41/* DISPC */
42#define DISPC_SZ_REGS SZ_4K
43
44enum omap_burst_size {
45 BURST_SIZE_X2 = 0,
46 BURST_SIZE_X4 = 1,
47 BURST_SIZE_X8 = 2,
48};
49
50#define REG_GET(dispc, idx, start, end) \
51 FLD_GET(dispc_read_reg(dispc, idx), start, end)
52
53#define REG_FLD_MOD(dispc, idx, val, start, end) \
54 dispc_write_reg(dispc, idx, \
55 FLD_MOD(dispc_read_reg(dispc, idx), val, start, end))
56
57/* DISPC has feature id */
58enum dispc_feature_id {
59 FEAT_LCDENABLEPOL,
60 FEAT_LCDENABLESIGNAL,
61 FEAT_PCKFREEENABLE,
62 FEAT_FUNCGATED,
63 FEAT_MGR_LCD2,
64 FEAT_MGR_LCD3,
65 FEAT_LINEBUFFERSPLIT,
66 FEAT_ROWREPEATENABLE,
67 FEAT_RESIZECONF,
68 /* Independent core clk divider */
69 FEAT_CORE_CLK_DIV,
70 FEAT_HANDLE_UV_SEPARATE,
71 FEAT_ATTR2,
72 FEAT_CPR,
73 FEAT_PRELOAD,
74 FEAT_FIR_COEF_V,
75 FEAT_ALPHA_FIXED_ZORDER,
76 FEAT_ALPHA_FREE_ZORDER,
77 FEAT_FIFO_MERGE,
78 /* An unknown HW bug causing the normal FIFO thresholds not to work */
79 FEAT_OMAP3_DSI_FIFO_BUG,
80 FEAT_BURST_2D,
81 FEAT_MFLAG,
82};
83
84struct dispc_features {
85 u8 sw_start;
86 u8 fp_start;
87 u8 bp_start;
88 u16 sw_max;
89 u16 vp_max;
90 u16 hp_max;
91 u8 mgr_width_start;
92 u8 mgr_height_start;
93 u16 mgr_width_max;
94 u16 mgr_height_max;
95 u16 ovl_width_max;
96 u16 ovl_height_max;
97 unsigned long max_lcd_pclk;
98 unsigned long max_tv_pclk;
99 unsigned int max_downscale;
100 unsigned int max_line_width;
101 unsigned int min_pcd;
102 int (*calc_scaling)(struct dispc_device *dispc,
103 unsigned long pclk, unsigned long lclk,
104 const struct videomode *vm,
105 u16 width, u16 height, u16 out_width, u16 out_height,
106 u32 fourcc, bool *five_taps,
107 int *x_predecim, int *y_predecim, int *decim_x, int *decim_y,
108 u16 pos_x, unsigned long *core_clk, bool mem_to_mem);
109 unsigned long (*calc_core_clk) (unsigned long pclk,
110 u16 width, u16 height, u16 out_width, u16 out_height,
111 bool mem_to_mem);
112 u8 num_fifos;
113 const enum dispc_feature_id *features;
114 unsigned int num_features;
115 const struct dss_reg_field *reg_fields;
116 const unsigned int num_reg_fields;
117 const enum omap_overlay_caps *overlay_caps;
118 const u32 **supported_color_modes;
119 const u32 *supported_scaler_color_modes;
120 unsigned int num_mgrs;
121 unsigned int num_ovls;
122 unsigned int buffer_size_unit;
123 unsigned int burst_size_unit;
124
125 /* swap GFX & WB fifos */
126 bool gfx_fifo_workaround:1;
127
128 /* no DISPC_IRQ_FRAMEDONETV on this SoC */
129 bool no_framedone_tv:1;
130
131 /* revert to the OMAP4 mechanism of DISPC Smart Standby operation */
132 bool mstandby_workaround:1;
133
134 bool set_max_preload:1;
135
136 /* PIXEL_INC is not added to the last pixel of a line */
137 bool last_pixel_inc_missing:1;
138
139 /* POL_FREQ has ALIGN bit */
140 bool supports_sync_align:1;
141
142 bool has_writeback:1;
143
144 bool supports_double_pixel:1;
145
146 /*
147 * Field order for VENC is different than HDMI. We should handle this in
148 * some intelligent manner, but as the SoCs have either HDMI or VENC,
149 * never both, we can just use this flag for now.
150 */
151 bool reverse_ilace_field_order:1;
152
153 bool has_gamma_table:1;
154
155 bool has_gamma_i734_bug:1;
156};
157
158#define DISPC_MAX_NR_FIFOS 5
159#define DISPC_MAX_CHANNEL_GAMMA 4
160
161struct dispc_device {
162 struct platform_device *pdev;
163 void __iomem *base;
164 struct dss_device *dss;
165
166 struct dss_debugfs_entry *debugfs;
167
168 int irq;
169 irq_handler_t user_handler;
170 void *user_data;
171
172 unsigned long core_clk_rate;
173 unsigned long tv_pclk_rate;
174
175 u32 fifo_size[DISPC_MAX_NR_FIFOS];
176 /* maps which plane is using a fifo. fifo-id -> plane-id */
177 int fifo_assignment[DISPC_MAX_NR_FIFOS];
178
179 bool ctx_valid;
180 u32 ctx[DISPC_SZ_REGS / sizeof(u32)];
181
182 u32 *gamma_table[DISPC_MAX_CHANNEL_GAMMA];
183
184 const struct dispc_features *feat;
185
186 bool is_enabled;
187
188 struct regmap *syscon_pol;
189 u32 syscon_pol_offset;
190};
191
192enum omap_color_component {
193 /* used for all color formats for OMAP3 and earlier
194 * and for RGB and Y color component on OMAP4
195 */
196 DISPC_COLOR_COMPONENT_RGB_Y = 1 << 0,
197 /* used for UV component for
198 * DRM_FORMAT_YUYV, DRM_FORMAT_UYVY, DRM_FORMAT_NV12
199 * color formats on OMAP4
200 */
201 DISPC_COLOR_COMPONENT_UV = 1 << 1,
202};
203
204enum mgr_reg_fields {
205 DISPC_MGR_FLD_ENABLE,
206 DISPC_MGR_FLD_STNTFT,
207 DISPC_MGR_FLD_GO,
208 DISPC_MGR_FLD_TFTDATALINES,
209 DISPC_MGR_FLD_STALLMODE,
210 DISPC_MGR_FLD_TCKENABLE,
211 DISPC_MGR_FLD_TCKSELECTION,
212 DISPC_MGR_FLD_CPR,
213 DISPC_MGR_FLD_FIFOHANDCHECK,
214 /* used to maintain a count of the above fields */
215 DISPC_MGR_FLD_NUM,
216};
217
218/* DISPC register field id */
219enum dispc_feat_reg_field {
220 FEAT_REG_FIRHINC,
221 FEAT_REG_FIRVINC,
222 FEAT_REG_FIFOHIGHTHRESHOLD,
223 FEAT_REG_FIFOLOWTHRESHOLD,
224 FEAT_REG_FIFOSIZE,
225 FEAT_REG_HORIZONTALACCU,
226 FEAT_REG_VERTICALACCU,
227};
228
229struct dispc_reg_field {
230 u16 reg;
231 u8 high;
232 u8 low;
233};
234
235struct dispc_gamma_desc {
236 u32 len;
237 u32 bits;
238 u16 reg;
239 bool has_index;
240};
241
242static const struct {
243 const char *name;
244 u32 vsync_irq;
245 u32 framedone_irq;
246 u32 sync_lost_irq;
247 struct dispc_gamma_desc gamma;
248 struct dispc_reg_field reg_desc[DISPC_MGR_FLD_NUM];
249} mgr_desc[] = {
250 [OMAP_DSS_CHANNEL_LCD] = {
251 .name = "LCD",
252 .vsync_irq = DISPC_IRQ_VSYNC,
253 .framedone_irq = DISPC_IRQ_FRAMEDONE,
254 .sync_lost_irq = DISPC_IRQ_SYNC_LOST,
255 .gamma = {
256 .len = 256,
257 .bits = 8,
258 .reg = DISPC_GAMMA_TABLE0,
259 .has_index = true,
260 },
261 .reg_desc = {
262 [DISPC_MGR_FLD_ENABLE] = { DISPC_CONTROL, 0, 0 },
263 [DISPC_MGR_FLD_STNTFT] = { DISPC_CONTROL, 3, 3 },
264 [DISPC_MGR_FLD_GO] = { DISPC_CONTROL, 5, 5 },
265 [DISPC_MGR_FLD_TFTDATALINES] = { DISPC_CONTROL, 9, 8 },
266 [DISPC_MGR_FLD_STALLMODE] = { DISPC_CONTROL, 11, 11 },
267 [DISPC_MGR_FLD_TCKENABLE] = { DISPC_CONFIG, 10, 10 },
268 [DISPC_MGR_FLD_TCKSELECTION] = { DISPC_CONFIG, 11, 11 },
269 [DISPC_MGR_FLD_CPR] = { DISPC_CONFIG, 15, 15 },
270 [DISPC_MGR_FLD_FIFOHANDCHECK] = { DISPC_CONFIG, 16, 16 },
271 },
272 },
273 [OMAP_DSS_CHANNEL_DIGIT] = {
274 .name = "DIGIT",
275 .vsync_irq = DISPC_IRQ_EVSYNC_ODD | DISPC_IRQ_EVSYNC_EVEN,
276 .framedone_irq = DISPC_IRQ_FRAMEDONETV,
277 .sync_lost_irq = DISPC_IRQ_SYNC_LOST_DIGIT,
278 .gamma = {
279 .len = 1024,
280 .bits = 10,
281 .reg = DISPC_GAMMA_TABLE2,
282 .has_index = false,
283 },
284 .reg_desc = {
285 [DISPC_MGR_FLD_ENABLE] = { DISPC_CONTROL, 1, 1 },
286 [DISPC_MGR_FLD_STNTFT] = { },
287 [DISPC_MGR_FLD_GO] = { DISPC_CONTROL, 6, 6 },
288 [DISPC_MGR_FLD_TFTDATALINES] = { },
289 [DISPC_MGR_FLD_STALLMODE] = { },
290 [DISPC_MGR_FLD_TCKENABLE] = { DISPC_CONFIG, 12, 12 },
291 [DISPC_MGR_FLD_TCKSELECTION] = { DISPC_CONFIG, 13, 13 },
292 [DISPC_MGR_FLD_CPR] = { },
293 [DISPC_MGR_FLD_FIFOHANDCHECK] = { DISPC_CONFIG, 16, 16 },
294 },
295 },
296 [OMAP_DSS_CHANNEL_LCD2] = {
297 .name = "LCD2",
298 .vsync_irq = DISPC_IRQ_VSYNC2,
299 .framedone_irq = DISPC_IRQ_FRAMEDONE2,
300 .sync_lost_irq = DISPC_IRQ_SYNC_LOST2,
301 .gamma = {
302 .len = 256,
303 .bits = 8,
304 .reg = DISPC_GAMMA_TABLE1,
305 .has_index = true,
306 },
307 .reg_desc = {
308 [DISPC_MGR_FLD_ENABLE] = { DISPC_CONTROL2, 0, 0 },
309 [DISPC_MGR_FLD_STNTFT] = { DISPC_CONTROL2, 3, 3 },
310 [DISPC_MGR_FLD_GO] = { DISPC_CONTROL2, 5, 5 },
311 [DISPC_MGR_FLD_TFTDATALINES] = { DISPC_CONTROL2, 9, 8 },
312 [DISPC_MGR_FLD_STALLMODE] = { DISPC_CONTROL2, 11, 11 },
313 [DISPC_MGR_FLD_TCKENABLE] = { DISPC_CONFIG2, 10, 10 },
314 [DISPC_MGR_FLD_TCKSELECTION] = { DISPC_CONFIG2, 11, 11 },
315 [DISPC_MGR_FLD_CPR] = { DISPC_CONFIG2, 15, 15 },
316 [DISPC_MGR_FLD_FIFOHANDCHECK] = { DISPC_CONFIG2, 16, 16 },
317 },
318 },
319 [OMAP_DSS_CHANNEL_LCD3] = {
320 .name = "LCD3",
321 .vsync_irq = DISPC_IRQ_VSYNC3,
322 .framedone_irq = DISPC_IRQ_FRAMEDONE3,
323 .sync_lost_irq = DISPC_IRQ_SYNC_LOST3,
324 .gamma = {
325 .len = 256,
326 .bits = 8,
327 .reg = DISPC_GAMMA_TABLE3,
328 .has_index = true,
329 },
330 .reg_desc = {
331 [DISPC_MGR_FLD_ENABLE] = { DISPC_CONTROL3, 0, 0 },
332 [DISPC_MGR_FLD_STNTFT] = { DISPC_CONTROL3, 3, 3 },
333 [DISPC_MGR_FLD_GO] = { DISPC_CONTROL3, 5, 5 },
334 [DISPC_MGR_FLD_TFTDATALINES] = { DISPC_CONTROL3, 9, 8 },
335 [DISPC_MGR_FLD_STALLMODE] = { DISPC_CONTROL3, 11, 11 },
336 [DISPC_MGR_FLD_TCKENABLE] = { DISPC_CONFIG3, 10, 10 },
337 [DISPC_MGR_FLD_TCKSELECTION] = { DISPC_CONFIG3, 11, 11 },
338 [DISPC_MGR_FLD_CPR] = { DISPC_CONFIG3, 15, 15 },
339 [DISPC_MGR_FLD_FIFOHANDCHECK] = { DISPC_CONFIG3, 16, 16 },
340 },
341 },
342};
343
344static unsigned long dispc_fclk_rate(struct dispc_device *dispc);
345static unsigned long dispc_core_clk_rate(struct dispc_device *dispc);
346static unsigned long dispc_mgr_lclk_rate(struct dispc_device *dispc,
347 enum omap_channel channel);
348static unsigned long dispc_mgr_pclk_rate(struct dispc_device *dispc,
349 enum omap_channel channel);
350
351static unsigned long dispc_plane_pclk_rate(struct dispc_device *dispc,
352 enum omap_plane_id plane);
353static unsigned long dispc_plane_lclk_rate(struct dispc_device *dispc,
354 enum omap_plane_id plane);
355
356static inline void dispc_write_reg(struct dispc_device *dispc, u16 idx, u32 val)
357{
358 __raw_writel(val, dispc->base + idx);
359}
360
361static inline u32 dispc_read_reg(struct dispc_device *dispc, u16 idx)
362{
363 return __raw_readl(dispc->base + idx);
364}
365
366static u32 mgr_fld_read(struct dispc_device *dispc, enum omap_channel channel,
367 enum mgr_reg_fields regfld)
368{
369 const struct dispc_reg_field *rfld = &mgr_desc[channel].reg_desc[regfld];
370
371 return REG_GET(dispc, rfld->reg, rfld->high, rfld->low);
372}
373
374static void mgr_fld_write(struct dispc_device *dispc, enum omap_channel channel,
375 enum mgr_reg_fields regfld, int val)
376{
377 const struct dispc_reg_field *rfld = &mgr_desc[channel].reg_desc[regfld];
378
379 REG_FLD_MOD(dispc, rfld->reg, val, rfld->high, rfld->low);
380}
381
382int dispc_get_num_ovls(struct dispc_device *dispc)
383{
384 return dispc->feat->num_ovls;
385}
386
387int dispc_get_num_mgrs(struct dispc_device *dispc)
388{
389 return dispc->feat->num_mgrs;
390}
391
392static void dispc_get_reg_field(struct dispc_device *dispc,
393 enum dispc_feat_reg_field id,
394 u8 *start, u8 *end)
395{
396 BUG_ON(id >= dispc->feat->num_reg_fields);
397
398 *start = dispc->feat->reg_fields[id].start;
399 *end = dispc->feat->reg_fields[id].end;
400}
401
402static bool dispc_has_feature(struct dispc_device *dispc,
403 enum dispc_feature_id id)
404{
405 unsigned int i;
406
407 for (i = 0; i < dispc->feat->num_features; i++) {
408 if (dispc->feat->features[i] == id)
409 return true;
410 }
411
412 return false;
413}
414
415#define SR(dispc, reg) \
416 dispc->ctx[DISPC_##reg / sizeof(u32)] = dispc_read_reg(dispc, DISPC_##reg)
417#define RR(dispc, reg) \
418 dispc_write_reg(dispc, DISPC_##reg, dispc->ctx[DISPC_##reg / sizeof(u32)])
419
420static void dispc_save_context(struct dispc_device *dispc)
421{
422 int i, j;
423
424 DSSDBG("dispc_save_context\n");
425
426 SR(dispc, IRQENABLE);
427 SR(dispc, CONTROL);
428 SR(dispc, CONFIG);
429 SR(dispc, LINE_NUMBER);
430 if (dispc_has_feature(dispc, FEAT_ALPHA_FIXED_ZORDER) ||
431 dispc_has_feature(dispc, FEAT_ALPHA_FREE_ZORDER))
432 SR(dispc, GLOBAL_ALPHA);
433 if (dispc_has_feature(dispc, FEAT_MGR_LCD2)) {
434 SR(dispc, CONTROL2);
435 SR(dispc, CONFIG2);
436 }
437 if (dispc_has_feature(dispc, FEAT_MGR_LCD3)) {
438 SR(dispc, CONTROL3);
439 SR(dispc, CONFIG3);
440 }
441
442 for (i = 0; i < dispc_get_num_mgrs(dispc); i++) {
443 SR(dispc, DEFAULT_COLOR(i));
444 SR(dispc, TRANS_COLOR(i));
445 SR(dispc, SIZE_MGR(i));
446 if (i == OMAP_DSS_CHANNEL_DIGIT)
447 continue;
448 SR(dispc, TIMING_H(i));
449 SR(dispc, TIMING_V(i));
450 SR(dispc, POL_FREQ(i));
451 SR(dispc, DIVISORo(i));
452
453 SR(dispc, DATA_CYCLE1(i));
454 SR(dispc, DATA_CYCLE2(i));
455 SR(dispc, DATA_CYCLE3(i));
456
457 if (dispc_has_feature(dispc, FEAT_CPR)) {
458 SR(dispc, CPR_COEF_R(i));
459 SR(dispc, CPR_COEF_G(i));
460 SR(dispc, CPR_COEF_B(i));
461 }
462 }
463
464 for (i = 0; i < dispc_get_num_ovls(dispc); i++) {
465 SR(dispc, OVL_BA0(i));
466 SR(dispc, OVL_BA1(i));
467 SR(dispc, OVL_POSITION(i));
468 SR(dispc, OVL_SIZE(i));
469 SR(dispc, OVL_ATTRIBUTES(i));
470 SR(dispc, OVL_FIFO_THRESHOLD(i));
471 SR(dispc, OVL_ROW_INC(i));
472 SR(dispc, OVL_PIXEL_INC(i));
473 if (dispc_has_feature(dispc, FEAT_PRELOAD))
474 SR(dispc, OVL_PRELOAD(i));
475 if (i == OMAP_DSS_GFX) {
476 SR(dispc, OVL_WINDOW_SKIP(i));
477 SR(dispc, OVL_TABLE_BA(i));
478 continue;
479 }
480 SR(dispc, OVL_FIR(i));
481 SR(dispc, OVL_PICTURE_SIZE(i));
482 SR(dispc, OVL_ACCU0(i));
483 SR(dispc, OVL_ACCU1(i));
484
485 for (j = 0; j < 8; j++)
486 SR(dispc, OVL_FIR_COEF_H(i, j));
487
488 for (j = 0; j < 8; j++)
489 SR(dispc, OVL_FIR_COEF_HV(i, j));
490
491 for (j = 0; j < 5; j++)
492 SR(dispc, OVL_CONV_COEF(i, j));
493
494 if (dispc_has_feature(dispc, FEAT_FIR_COEF_V)) {
495 for (j = 0; j < 8; j++)
496 SR(dispc, OVL_FIR_COEF_V(i, j));
497 }
498
499 if (dispc_has_feature(dispc, FEAT_HANDLE_UV_SEPARATE)) {
500 SR(dispc, OVL_BA0_UV(i));
501 SR(dispc, OVL_BA1_UV(i));
502 SR(dispc, OVL_FIR2(i));
503 SR(dispc, OVL_ACCU2_0(i));
504 SR(dispc, OVL_ACCU2_1(i));
505
506 for (j = 0; j < 8; j++)
507 SR(dispc, OVL_FIR_COEF_H2(i, j));
508
509 for (j = 0; j < 8; j++)
510 SR(dispc, OVL_FIR_COEF_HV2(i, j));
511
512 for (j = 0; j < 8; j++)
513 SR(dispc, OVL_FIR_COEF_V2(i, j));
514 }
515 if (dispc_has_feature(dispc, FEAT_ATTR2))
516 SR(dispc, OVL_ATTRIBUTES2(i));
517 }
518
519 if (dispc_has_feature(dispc, FEAT_CORE_CLK_DIV))
520 SR(dispc, DIVISOR);
521
522 dispc->ctx_valid = true;
523
524 DSSDBG("context saved\n");
525}
526
527static void dispc_restore_context(struct dispc_device *dispc)
528{
529 int i, j;
530
531 DSSDBG("dispc_restore_context\n");
532
533 if (!dispc->ctx_valid)
534 return;
535
536 /*RR(dispc, IRQENABLE);*/
537 /*RR(dispc, CONTROL);*/
538 RR(dispc, CONFIG);
539 RR(dispc, LINE_NUMBER);
540 if (dispc_has_feature(dispc, FEAT_ALPHA_FIXED_ZORDER) ||
541 dispc_has_feature(dispc, FEAT_ALPHA_FREE_ZORDER))
542 RR(dispc, GLOBAL_ALPHA);
543 if (dispc_has_feature(dispc, FEAT_MGR_LCD2))
544 RR(dispc, CONFIG2);
545 if (dispc_has_feature(dispc, FEAT_MGR_LCD3))
546 RR(dispc, CONFIG3);
547
548 for (i = 0; i < dispc_get_num_mgrs(dispc); i++) {
549 RR(dispc, DEFAULT_COLOR(i));
550 RR(dispc, TRANS_COLOR(i));
551 RR(dispc, SIZE_MGR(i));
552 if (i == OMAP_DSS_CHANNEL_DIGIT)
553 continue;
554 RR(dispc, TIMING_H(i));
555 RR(dispc, TIMING_V(i));
556 RR(dispc, POL_FREQ(i));
557 RR(dispc, DIVISORo(i));
558
559 RR(dispc, DATA_CYCLE1(i));
560 RR(dispc, DATA_CYCLE2(i));
561 RR(dispc, DATA_CYCLE3(i));
562
563 if (dispc_has_feature(dispc, FEAT_CPR)) {
564 RR(dispc, CPR_COEF_R(i));
565 RR(dispc, CPR_COEF_G(i));
566 RR(dispc, CPR_COEF_B(i));
567 }
568 }
569
570 for (i = 0; i < dispc_get_num_ovls(dispc); i++) {
571 RR(dispc, OVL_BA0(i));
572 RR(dispc, OVL_BA1(i));
573 RR(dispc, OVL_POSITION(i));
574 RR(dispc, OVL_SIZE(i));
575 RR(dispc, OVL_ATTRIBUTES(i));
576 RR(dispc, OVL_FIFO_THRESHOLD(i));
577 RR(dispc, OVL_ROW_INC(i));
578 RR(dispc, OVL_PIXEL_INC(i));
579 if (dispc_has_feature(dispc, FEAT_PRELOAD))
580 RR(dispc, OVL_PRELOAD(i));
581 if (i == OMAP_DSS_GFX) {
582 RR(dispc, OVL_WINDOW_SKIP(i));
583 RR(dispc, OVL_TABLE_BA(i));
584 continue;
585 }
586 RR(dispc, OVL_FIR(i));
587 RR(dispc, OVL_PICTURE_SIZE(i));
588 RR(dispc, OVL_ACCU0(i));
589 RR(dispc, OVL_ACCU1(i));
590
591 for (j = 0; j < 8; j++)
592 RR(dispc, OVL_FIR_COEF_H(i, j));
593
594 for (j = 0; j < 8; j++)
595 RR(dispc, OVL_FIR_COEF_HV(i, j));
596
597 for (j = 0; j < 5; j++)
598 RR(dispc, OVL_CONV_COEF(i, j));
599
600 if (dispc_has_feature(dispc, FEAT_FIR_COEF_V)) {
601 for (j = 0; j < 8; j++)
602 RR(dispc, OVL_FIR_COEF_V(i, j));
603 }
604
605 if (dispc_has_feature(dispc, FEAT_HANDLE_UV_SEPARATE)) {
606 RR(dispc, OVL_BA0_UV(i));
607 RR(dispc, OVL_BA1_UV(i));
608 RR(dispc, OVL_FIR2(i));
609 RR(dispc, OVL_ACCU2_0(i));
610 RR(dispc, OVL_ACCU2_1(i));
611
612 for (j = 0; j < 8; j++)
613 RR(dispc, OVL_FIR_COEF_H2(i, j));
614
615 for (j = 0; j < 8; j++)
616 RR(dispc, OVL_FIR_COEF_HV2(i, j));
617
618 for (j = 0; j < 8; j++)
619 RR(dispc, OVL_FIR_COEF_V2(i, j));
620 }
621 if (dispc_has_feature(dispc, FEAT_ATTR2))
622 RR(dispc, OVL_ATTRIBUTES2(i));
623 }
624
625 if (dispc_has_feature(dispc, FEAT_CORE_CLK_DIV))
626 RR(dispc, DIVISOR);
627
628 /* enable last, because LCD & DIGIT enable are here */
629 RR(dispc, CONTROL);
630 if (dispc_has_feature(dispc, FEAT_MGR_LCD2))
631 RR(dispc, CONTROL2);
632 if (dispc_has_feature(dispc, FEAT_MGR_LCD3))
633 RR(dispc, CONTROL3);
634 /* clear spurious SYNC_LOST_DIGIT interrupts */
635 dispc_clear_irqstatus(dispc, DISPC_IRQ_SYNC_LOST_DIGIT);
636
637 /*
638 * enable last so IRQs won't trigger before
639 * the context is fully restored
640 */
641 RR(dispc, IRQENABLE);
642
643 DSSDBG("context restored\n");
644}
645
646#undef SR
647#undef RR
648
649int dispc_runtime_get(struct dispc_device *dispc)
650{
651 int r;
652
653 DSSDBG("dispc_runtime_get\n");
654
655 r = pm_runtime_get_sync(&dispc->pdev->dev);
656 if (WARN_ON(r < 0)) {
657 pm_runtime_put_noidle(&dispc->pdev->dev);
658 return r;
659 }
660 return 0;
661}
662
663void dispc_runtime_put(struct dispc_device *dispc)
664{
665 int r;
666
667 DSSDBG("dispc_runtime_put\n");
668
669 r = pm_runtime_put_sync(&dispc->pdev->dev);
670 WARN_ON(r < 0 && r != -ENOSYS);
671}
672
673u32 dispc_mgr_get_vsync_irq(struct dispc_device *dispc,
674 enum omap_channel channel)
675{
676 return mgr_desc[channel].vsync_irq;
677}
678
679u32 dispc_mgr_get_framedone_irq(struct dispc_device *dispc,
680 enum omap_channel channel)
681{
682 if (channel == OMAP_DSS_CHANNEL_DIGIT && dispc->feat->no_framedone_tv)
683 return 0;
684
685 return mgr_desc[channel].framedone_irq;
686}
687
688u32 dispc_mgr_get_sync_lost_irq(struct dispc_device *dispc,
689 enum omap_channel channel)
690{
691 return mgr_desc[channel].sync_lost_irq;
692}
693
694u32 dispc_wb_get_framedone_irq(struct dispc_device *dispc)
695{
696 return DISPC_IRQ_FRAMEDONEWB;
697}
698
699void dispc_mgr_enable(struct dispc_device *dispc,
700 enum omap_channel channel, bool enable)
701{
702 mgr_fld_write(dispc, channel, DISPC_MGR_FLD_ENABLE, enable);
703 /* flush posted write */
704 mgr_fld_read(dispc, channel, DISPC_MGR_FLD_ENABLE);
705}
706
707static bool dispc_mgr_is_enabled(struct dispc_device *dispc,
708 enum omap_channel channel)
709{
710 return !!mgr_fld_read(dispc, channel, DISPC_MGR_FLD_ENABLE);
711}
712
713bool dispc_mgr_go_busy(struct dispc_device *dispc,
714 enum omap_channel channel)
715{
716 return mgr_fld_read(dispc, channel, DISPC_MGR_FLD_GO) == 1;
717}
718
719void dispc_mgr_go(struct dispc_device *dispc, enum omap_channel channel)
720{
721 WARN_ON(!dispc_mgr_is_enabled(dispc, channel));
722 WARN_ON(dispc_mgr_go_busy(dispc, channel));
723
724 DSSDBG("GO %s\n", mgr_desc[channel].name);
725
726 mgr_fld_write(dispc, channel, DISPC_MGR_FLD_GO, 1);
727}
728
729bool dispc_wb_go_busy(struct dispc_device *dispc)
730{
731 return REG_GET(dispc, DISPC_CONTROL2, 6, 6) == 1;
732}
733
734void dispc_wb_go(struct dispc_device *dispc)
735{
736 enum omap_plane_id plane = OMAP_DSS_WB;
737 bool enable, go;
738
739 enable = REG_GET(dispc, DISPC_OVL_ATTRIBUTES(plane), 0, 0) == 1;
740
741 if (!enable)
742 return;
743
744 go = REG_GET(dispc, DISPC_CONTROL2, 6, 6) == 1;
745 if (go) {
746 DSSERR("GO bit not down for WB\n");
747 return;
748 }
749
750 REG_FLD_MOD(dispc, DISPC_CONTROL2, 1, 6, 6);
751}
752
753static void dispc_ovl_write_firh_reg(struct dispc_device *dispc,
754 enum omap_plane_id plane, int reg,
755 u32 value)
756{
757 dispc_write_reg(dispc, DISPC_OVL_FIR_COEF_H(plane, reg), value);
758}
759
760static void dispc_ovl_write_firhv_reg(struct dispc_device *dispc,
761 enum omap_plane_id plane, int reg,
762 u32 value)
763{
764 dispc_write_reg(dispc, DISPC_OVL_FIR_COEF_HV(plane, reg), value);
765}
766
767static void dispc_ovl_write_firv_reg(struct dispc_device *dispc,
768 enum omap_plane_id plane, int reg,
769 u32 value)
770{
771 dispc_write_reg(dispc, DISPC_OVL_FIR_COEF_V(plane, reg), value);
772}
773
774static void dispc_ovl_write_firh2_reg(struct dispc_device *dispc,
775 enum omap_plane_id plane, int reg,
776 u32 value)
777{
778 BUG_ON(plane == OMAP_DSS_GFX);
779
780 dispc_write_reg(dispc, DISPC_OVL_FIR_COEF_H2(plane, reg), value);
781}
782
783static void dispc_ovl_write_firhv2_reg(struct dispc_device *dispc,
784 enum omap_plane_id plane, int reg,
785 u32 value)
786{
787 BUG_ON(plane == OMAP_DSS_GFX);
788
789 dispc_write_reg(dispc, DISPC_OVL_FIR_COEF_HV2(plane, reg), value);
790}
791
792static void dispc_ovl_write_firv2_reg(struct dispc_device *dispc,
793 enum omap_plane_id plane, int reg,
794 u32 value)
795{
796 BUG_ON(plane == OMAP_DSS_GFX);
797
798 dispc_write_reg(dispc, DISPC_OVL_FIR_COEF_V2(plane, reg), value);
799}
800
801static void dispc_ovl_set_scale_coef(struct dispc_device *dispc,
802 enum omap_plane_id plane, int fir_hinc,
803 int fir_vinc, int five_taps,
804 enum omap_color_component color_comp)
805{
806 const struct dispc_coef *h_coef, *v_coef;
807 int i;
808
809 h_coef = dispc_ovl_get_scale_coef(fir_hinc, true);
810 v_coef = dispc_ovl_get_scale_coef(fir_vinc, five_taps);
811
812 if (!h_coef || !v_coef) {
813 dev_err(&dispc->pdev->dev, "%s: failed to find scale coefs\n",
814 __func__);
815 return;
816 }
817
818 for (i = 0; i < 8; i++) {
819 u32 h, hv;
820
821 h = FLD_VAL(h_coef[i].hc0_vc00, 7, 0)
822 | FLD_VAL(h_coef[i].hc1_vc0, 15, 8)
823 | FLD_VAL(h_coef[i].hc2_vc1, 23, 16)
824 | FLD_VAL(h_coef[i].hc3_vc2, 31, 24);
825 hv = FLD_VAL(h_coef[i].hc4_vc22, 7, 0)
826 | FLD_VAL(v_coef[i].hc1_vc0, 15, 8)
827 | FLD_VAL(v_coef[i].hc2_vc1, 23, 16)
828 | FLD_VAL(v_coef[i].hc3_vc2, 31, 24);
829
830 if (color_comp == DISPC_COLOR_COMPONENT_RGB_Y) {
831 dispc_ovl_write_firh_reg(dispc, plane, i, h);
832 dispc_ovl_write_firhv_reg(dispc, plane, i, hv);
833 } else {
834 dispc_ovl_write_firh2_reg(dispc, plane, i, h);
835 dispc_ovl_write_firhv2_reg(dispc, plane, i, hv);
836 }
837
838 }
839
840 if (five_taps) {
841 for (i = 0; i < 8; i++) {
842 u32 v;
843 v = FLD_VAL(v_coef[i].hc0_vc00, 7, 0)
844 | FLD_VAL(v_coef[i].hc4_vc22, 15, 8);
845 if (color_comp == DISPC_COLOR_COMPONENT_RGB_Y)
846 dispc_ovl_write_firv_reg(dispc, plane, i, v);
847 else
848 dispc_ovl_write_firv2_reg(dispc, plane, i, v);
849 }
850 }
851}
852
853struct csc_coef_yuv2rgb {
854 int ry, rcb, rcr, gy, gcb, gcr, by, bcb, bcr;
855 bool full_range;
856};
857
858struct csc_coef_rgb2yuv {
859 int yr, yg, yb, cbr, cbg, cbb, crr, crg, crb;
860 bool full_range;
861};
862
863static void dispc_ovl_write_color_conv_coef(struct dispc_device *dispc,
864 enum omap_plane_id plane,
865 const struct csc_coef_yuv2rgb *ct)
866{
867#define CVAL(x, y) (FLD_VAL(x, 26, 16) | FLD_VAL(y, 10, 0))
868
869 dispc_write_reg(dispc, DISPC_OVL_CONV_COEF(plane, 0), CVAL(ct->rcr, ct->ry));
870 dispc_write_reg(dispc, DISPC_OVL_CONV_COEF(plane, 1), CVAL(ct->gy, ct->rcb));
871 dispc_write_reg(dispc, DISPC_OVL_CONV_COEF(plane, 2), CVAL(ct->gcb, ct->gcr));
872 dispc_write_reg(dispc, DISPC_OVL_CONV_COEF(plane, 3), CVAL(ct->bcr, ct->by));
873 dispc_write_reg(dispc, DISPC_OVL_CONV_COEF(plane, 4), CVAL(0, ct->bcb));
874
875 REG_FLD_MOD(dispc, DISPC_OVL_ATTRIBUTES(plane), ct->full_range, 11, 11);
876
877#undef CVAL
878}
879
880/* YUV -> RGB, ITU-R BT.601, full range */
881static const struct csc_coef_yuv2rgb coefs_yuv2rgb_bt601_full = {
882 256, 0, 358, /* ry, rcb, rcr |1.000 0.000 1.402|*/
883 256, -88, -182, /* gy, gcb, gcr |1.000 -0.344 -0.714|*/
884 256, 452, 0, /* by, bcb, bcr |1.000 1.772 0.000|*/
885 true, /* full range */
886};
887
888/* YUV -> RGB, ITU-R BT.601, limited range */
889static const struct csc_coef_yuv2rgb coefs_yuv2rgb_bt601_lim = {
890 298, 0, 409, /* ry, rcb, rcr |1.164 0.000 1.596|*/
891 298, -100, -208, /* gy, gcb, gcr |1.164 -0.392 -0.813|*/
892 298, 516, 0, /* by, bcb, bcr |1.164 2.017 0.000|*/
893 false, /* limited range */
894};
895
896/* YUV -> RGB, ITU-R BT.709, full range */
897static const struct csc_coef_yuv2rgb coefs_yuv2rgb_bt709_full = {
898 256, 0, 402, /* ry, rcb, rcr |1.000 0.000 1.570|*/
899 256, -48, -120, /* gy, gcb, gcr |1.000 -0.187 -0.467|*/
900 256, 475, 0, /* by, bcb, bcr |1.000 1.856 0.000|*/
901 true, /* full range */
902};
903
904/* YUV -> RGB, ITU-R BT.709, limited range */
905static const struct csc_coef_yuv2rgb coefs_yuv2rgb_bt709_lim = {
906 298, 0, 459, /* ry, rcb, rcr |1.164 0.000 1.793|*/
907 298, -55, -136, /* gy, gcb, gcr |1.164 -0.213 -0.533|*/
908 298, 541, 0, /* by, bcb, bcr |1.164 2.112 0.000|*/
909 false, /* limited range */
910};
911
912static void dispc_ovl_set_csc(struct dispc_device *dispc,
913 enum omap_plane_id plane,
914 enum drm_color_encoding color_encoding,
915 enum drm_color_range color_range)
916{
917 const struct csc_coef_yuv2rgb *csc;
918
919 switch (color_encoding) {
920 default:
921 case DRM_COLOR_YCBCR_BT601:
922 if (color_range == DRM_COLOR_YCBCR_FULL_RANGE)
923 csc = &coefs_yuv2rgb_bt601_full;
924 else
925 csc = &coefs_yuv2rgb_bt601_lim;
926 break;
927 case DRM_COLOR_YCBCR_BT709:
928 if (color_range == DRM_COLOR_YCBCR_FULL_RANGE)
929 csc = &coefs_yuv2rgb_bt709_full;
930 else
931 csc = &coefs_yuv2rgb_bt709_lim;
932 break;
933 }
934
935 dispc_ovl_write_color_conv_coef(dispc, plane, csc);
936}
937
938static void dispc_ovl_set_ba0(struct dispc_device *dispc,
939 enum omap_plane_id plane, u32 paddr)
940{
941 dispc_write_reg(dispc, DISPC_OVL_BA0(plane), paddr);
942}
943
944static void dispc_ovl_set_ba1(struct dispc_device *dispc,
945 enum omap_plane_id plane, u32 paddr)
946{
947 dispc_write_reg(dispc, DISPC_OVL_BA1(plane), paddr);
948}
949
950static void dispc_ovl_set_ba0_uv(struct dispc_device *dispc,
951 enum omap_plane_id plane, u32 paddr)
952{
953 dispc_write_reg(dispc, DISPC_OVL_BA0_UV(plane), paddr);
954}
955
956static void dispc_ovl_set_ba1_uv(struct dispc_device *dispc,
957 enum omap_plane_id plane, u32 paddr)
958{
959 dispc_write_reg(dispc, DISPC_OVL_BA1_UV(plane), paddr);
960}
961
962static void dispc_ovl_set_pos(struct dispc_device *dispc,
963 enum omap_plane_id plane,
964 enum omap_overlay_caps caps, int x, int y)
965{
966 u32 val;
967
968 if ((caps & OMAP_DSS_OVL_CAP_POS) == 0)
969 return;
970
971 val = FLD_VAL(y, 26, 16) | FLD_VAL(x, 10, 0);
972
973 dispc_write_reg(dispc, DISPC_OVL_POSITION(plane), val);
974}
975
976static void dispc_ovl_set_input_size(struct dispc_device *dispc,
977 enum omap_plane_id plane, int width,
978 int height)
979{
980 u32 val = FLD_VAL(height - 1, 26, 16) | FLD_VAL(width - 1, 10, 0);
981
982 if (plane == OMAP_DSS_GFX || plane == OMAP_DSS_WB)
983 dispc_write_reg(dispc, DISPC_OVL_SIZE(plane), val);
984 else
985 dispc_write_reg(dispc, DISPC_OVL_PICTURE_SIZE(plane), val);
986}
987
988static void dispc_ovl_set_output_size(struct dispc_device *dispc,
989 enum omap_plane_id plane, int width,
990 int height)
991{
992 u32 val;
993
994 BUG_ON(plane == OMAP_DSS_GFX);
995
996 val = FLD_VAL(height - 1, 26, 16) | FLD_VAL(width - 1, 10, 0);
997
998 if (plane == OMAP_DSS_WB)
999 dispc_write_reg(dispc, DISPC_OVL_PICTURE_SIZE(plane), val);
1000 else
1001 dispc_write_reg(dispc, DISPC_OVL_SIZE(plane), val);
1002}
1003
1004static void dispc_ovl_set_zorder(struct dispc_device *dispc,
1005 enum omap_plane_id plane,
1006 enum omap_overlay_caps caps, u8 zorder)
1007{
1008 if ((caps & OMAP_DSS_OVL_CAP_ZORDER) == 0)
1009 return;
1010
1011 REG_FLD_MOD(dispc, DISPC_OVL_ATTRIBUTES(plane), zorder, 27, 26);
1012}
1013
1014static void dispc_ovl_enable_zorder_planes(struct dispc_device *dispc)
1015{
1016 int i;
1017
1018 if (!dispc_has_feature(dispc, FEAT_ALPHA_FREE_ZORDER))
1019 return;
1020
1021 for (i = 0; i < dispc_get_num_ovls(dispc); i++)
1022 REG_FLD_MOD(dispc, DISPC_OVL_ATTRIBUTES(i), 1, 25, 25);
1023}
1024
1025static void dispc_ovl_set_pre_mult_alpha(struct dispc_device *dispc,
1026 enum omap_plane_id plane,
1027 enum omap_overlay_caps caps,
1028 bool enable)
1029{
1030 if ((caps & OMAP_DSS_OVL_CAP_PRE_MULT_ALPHA) == 0)
1031 return;
1032
1033 REG_FLD_MOD(dispc, DISPC_OVL_ATTRIBUTES(plane), enable ? 1 : 0, 28, 28);
1034}
1035
1036static void dispc_ovl_setup_global_alpha(struct dispc_device *dispc,
1037 enum omap_plane_id plane,
1038 enum omap_overlay_caps caps,
1039 u8 global_alpha)
1040{
1041 static const unsigned int shifts[] = { 0, 8, 16, 24, };
1042 int shift;
1043
1044 if ((caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
1045 return;
1046
1047 shift = shifts[plane];
1048 REG_FLD_MOD(dispc, DISPC_GLOBAL_ALPHA, global_alpha, shift + 7, shift);
1049}
1050
1051static void dispc_ovl_set_pix_inc(struct dispc_device *dispc,
1052 enum omap_plane_id plane, s32 inc)
1053{
1054 dispc_write_reg(dispc, DISPC_OVL_PIXEL_INC(plane), inc);
1055}
1056
1057static void dispc_ovl_set_row_inc(struct dispc_device *dispc,
1058 enum omap_plane_id plane, s32 inc)
1059{
1060 dispc_write_reg(dispc, DISPC_OVL_ROW_INC(plane), inc);
1061}
1062
1063static void dispc_ovl_set_color_mode(struct dispc_device *dispc,
1064 enum omap_plane_id plane, u32 fourcc)
1065{
1066 u32 m = 0;
1067 if (plane != OMAP_DSS_GFX) {
1068 switch (fourcc) {
1069 case DRM_FORMAT_NV12:
1070 m = 0x0; break;
1071 case DRM_FORMAT_XRGB4444:
1072 m = 0x1; break;
1073 case DRM_FORMAT_RGBA4444:
1074 m = 0x2; break;
1075 case DRM_FORMAT_RGBX4444:
1076 m = 0x4; break;
1077 case DRM_FORMAT_ARGB4444:
1078 m = 0x5; break;
1079 case DRM_FORMAT_RGB565:
1080 m = 0x6; break;
1081 case DRM_FORMAT_ARGB1555:
1082 m = 0x7; break;
1083 case DRM_FORMAT_XRGB8888:
1084 m = 0x8; break;
1085 case DRM_FORMAT_RGB888:
1086 m = 0x9; break;
1087 case DRM_FORMAT_YUYV:
1088 m = 0xa; break;
1089 case DRM_FORMAT_UYVY:
1090 m = 0xb; break;
1091 case DRM_FORMAT_ARGB8888:
1092 m = 0xc; break;
1093 case DRM_FORMAT_RGBA8888:
1094 m = 0xd; break;
1095 case DRM_FORMAT_RGBX8888:
1096 m = 0xe; break;
1097 case DRM_FORMAT_XRGB1555:
1098 m = 0xf; break;
1099 default:
1100 BUG(); return;
1101 }
1102 } else {
1103 switch (fourcc) {
1104 case DRM_FORMAT_RGBX4444:
1105 m = 0x4; break;
1106 case DRM_FORMAT_ARGB4444:
1107 m = 0x5; break;
1108 case DRM_FORMAT_RGB565:
1109 m = 0x6; break;
1110 case DRM_FORMAT_ARGB1555:
1111 m = 0x7; break;
1112 case DRM_FORMAT_XRGB8888:
1113 m = 0x8; break;
1114 case DRM_FORMAT_RGB888:
1115 m = 0x9; break;
1116 case DRM_FORMAT_XRGB4444:
1117 m = 0xa; break;
1118 case DRM_FORMAT_RGBA4444:
1119 m = 0xb; break;
1120 case DRM_FORMAT_ARGB8888:
1121 m = 0xc; break;
1122 case DRM_FORMAT_RGBA8888:
1123 m = 0xd; break;
1124 case DRM_FORMAT_RGBX8888:
1125 m = 0xe; break;
1126 case DRM_FORMAT_XRGB1555:
1127 m = 0xf; break;
1128 default:
1129 BUG(); return;
1130 }
1131 }
1132
1133 REG_FLD_MOD(dispc, DISPC_OVL_ATTRIBUTES(plane), m, 4, 1);
1134}
1135
1136static void dispc_ovl_configure_burst_type(struct dispc_device *dispc,
1137 enum omap_plane_id plane,
1138 enum omap_dss_rotation_type rotation)
1139{
1140 if (dispc_has_feature(dispc, FEAT_BURST_2D) == 0)
1141 return;
1142
1143 if (rotation == OMAP_DSS_ROT_TILER)
1144 REG_FLD_MOD(dispc, DISPC_OVL_ATTRIBUTES(plane), 1, 29, 29);
1145 else
1146 REG_FLD_MOD(dispc, DISPC_OVL_ATTRIBUTES(plane), 0, 29, 29);
1147}
1148
1149static void dispc_ovl_set_channel_out(struct dispc_device *dispc,
1150 enum omap_plane_id plane,
1151 enum omap_channel channel)
1152{
1153 int shift;
1154 u32 val;
1155 int chan = 0, chan2 = 0;
1156
1157 switch (plane) {
1158 case OMAP_DSS_GFX:
1159 shift = 8;
1160 break;
1161 case OMAP_DSS_VIDEO1:
1162 case OMAP_DSS_VIDEO2:
1163 case OMAP_DSS_VIDEO3:
1164 shift = 16;
1165 break;
1166 default:
1167 BUG();
1168 return;
1169 }
1170
1171 val = dispc_read_reg(dispc, DISPC_OVL_ATTRIBUTES(plane));
1172 if (dispc_has_feature(dispc, FEAT_MGR_LCD2)) {
1173 switch (channel) {
1174 case OMAP_DSS_CHANNEL_LCD:
1175 chan = 0;
1176 chan2 = 0;
1177 break;
1178 case OMAP_DSS_CHANNEL_DIGIT:
1179 chan = 1;
1180 chan2 = 0;
1181 break;
1182 case OMAP_DSS_CHANNEL_LCD2:
1183 chan = 0;
1184 chan2 = 1;
1185 break;
1186 case OMAP_DSS_CHANNEL_LCD3:
1187 if (dispc_has_feature(dispc, FEAT_MGR_LCD3)) {
1188 chan = 0;
1189 chan2 = 2;
1190 } else {
1191 BUG();
1192 return;
1193 }
1194 break;
1195 case OMAP_DSS_CHANNEL_WB:
1196 chan = 0;
1197 chan2 = 3;
1198 break;
1199 default:
1200 BUG();
1201 return;
1202 }
1203
1204 val = FLD_MOD(val, chan, shift, shift);
1205 val = FLD_MOD(val, chan2, 31, 30);
1206 } else {
1207 val = FLD_MOD(val, channel, shift, shift);
1208 }
1209 dispc_write_reg(dispc, DISPC_OVL_ATTRIBUTES(plane), val);
1210}
1211
1212static enum omap_channel dispc_ovl_get_channel_out(struct dispc_device *dispc,
1213 enum omap_plane_id plane)
1214{
1215 int shift;
1216 u32 val;
1217
1218 switch (plane) {
1219 case OMAP_DSS_GFX:
1220 shift = 8;
1221 break;
1222 case OMAP_DSS_VIDEO1:
1223 case OMAP_DSS_VIDEO2:
1224 case OMAP_DSS_VIDEO3:
1225 shift = 16;
1226 break;
1227 default:
1228 BUG();
1229 return 0;
1230 }
1231
1232 val = dispc_read_reg(dispc, DISPC_OVL_ATTRIBUTES(plane));
1233
1234 if (FLD_GET(val, shift, shift) == 1)
1235 return OMAP_DSS_CHANNEL_DIGIT;
1236
1237 if (!dispc_has_feature(dispc, FEAT_MGR_LCD2))
1238 return OMAP_DSS_CHANNEL_LCD;
1239
1240 switch (FLD_GET(val, 31, 30)) {
1241 case 0:
1242 default:
1243 return OMAP_DSS_CHANNEL_LCD;
1244 case 1:
1245 return OMAP_DSS_CHANNEL_LCD2;
1246 case 2:
1247 return OMAP_DSS_CHANNEL_LCD3;
1248 case 3:
1249 return OMAP_DSS_CHANNEL_WB;
1250 }
1251}
1252
1253static void dispc_ovl_set_burst_size(struct dispc_device *dispc,
1254 enum omap_plane_id plane,
1255 enum omap_burst_size burst_size)
1256{
1257 static const unsigned int shifts[] = { 6, 14, 14, 14, 14, };
1258 int shift;
1259
1260 shift = shifts[plane];
1261 REG_FLD_MOD(dispc, DISPC_OVL_ATTRIBUTES(plane), burst_size,
1262 shift + 1, shift);
1263}
1264
1265static void dispc_configure_burst_sizes(struct dispc_device *dispc)
1266{
1267 int i;
1268 const int burst_size = BURST_SIZE_X8;
1269
1270 /* Configure burst size always to maximum size */
1271 for (i = 0; i < dispc_get_num_ovls(dispc); ++i)
1272 dispc_ovl_set_burst_size(dispc, i, burst_size);
1273 if (dispc->feat->has_writeback)
1274 dispc_ovl_set_burst_size(dispc, OMAP_DSS_WB, burst_size);
1275}
1276
1277static u32 dispc_ovl_get_burst_size(struct dispc_device *dispc,
1278 enum omap_plane_id plane)
1279{
1280 /* burst multiplier is always x8 (see dispc_configure_burst_sizes()) */
1281 return dispc->feat->burst_size_unit * 8;
1282}
1283
1284bool dispc_ovl_color_mode_supported(struct dispc_device *dispc,
1285 enum omap_plane_id plane, u32 fourcc)
1286{
1287 const u32 *modes;
1288 unsigned int i;
1289
1290 modes = dispc->feat->supported_color_modes[plane];
1291
1292 for (i = 0; modes[i]; ++i) {
1293 if (modes[i] == fourcc)
1294 return true;
1295 }
1296
1297 return false;
1298}
1299
1300const u32 *dispc_ovl_get_color_modes(struct dispc_device *dispc,
1301 enum omap_plane_id plane)
1302{
1303 return dispc->feat->supported_color_modes[plane];
1304}
1305
1306static void dispc_mgr_enable_cpr(struct dispc_device *dispc,
1307 enum omap_channel channel, bool enable)
1308{
1309 if (channel == OMAP_DSS_CHANNEL_DIGIT)
1310 return;
1311
1312 mgr_fld_write(dispc, channel, DISPC_MGR_FLD_CPR, enable);
1313}
1314
1315static void dispc_mgr_set_cpr_coef(struct dispc_device *dispc,
1316 enum omap_channel channel,
1317 const struct omap_dss_cpr_coefs *coefs)
1318{
1319 u32 coef_r, coef_g, coef_b;
1320
1321 if (!dss_mgr_is_lcd(channel))
1322 return;
1323
1324 coef_r = FLD_VAL(coefs->rr, 31, 22) | FLD_VAL(coefs->rg, 20, 11) |
1325 FLD_VAL(coefs->rb, 9, 0);
1326 coef_g = FLD_VAL(coefs->gr, 31, 22) | FLD_VAL(coefs->gg, 20, 11) |
1327 FLD_VAL(coefs->gb, 9, 0);
1328 coef_b = FLD_VAL(coefs->br, 31, 22) | FLD_VAL(coefs->bg, 20, 11) |
1329 FLD_VAL(coefs->bb, 9, 0);
1330
1331 dispc_write_reg(dispc, DISPC_CPR_COEF_R(channel), coef_r);
1332 dispc_write_reg(dispc, DISPC_CPR_COEF_G(channel), coef_g);
1333 dispc_write_reg(dispc, DISPC_CPR_COEF_B(channel), coef_b);
1334}
1335
1336static void dispc_ovl_set_vid_color_conv(struct dispc_device *dispc,
1337 enum omap_plane_id plane, bool enable)
1338{
1339 u32 val;
1340
1341 BUG_ON(plane == OMAP_DSS_GFX);
1342
1343 val = dispc_read_reg(dispc, DISPC_OVL_ATTRIBUTES(plane));
1344 val = FLD_MOD(val, enable, 9, 9);
1345 dispc_write_reg(dispc, DISPC_OVL_ATTRIBUTES(plane), val);
1346}
1347
1348static void dispc_ovl_enable_replication(struct dispc_device *dispc,
1349 enum omap_plane_id plane,
1350 enum omap_overlay_caps caps,
1351 bool enable)
1352{
1353 static const unsigned int shifts[] = { 5, 10, 10, 10 };
1354 int shift;
1355
1356 if ((caps & OMAP_DSS_OVL_CAP_REPLICATION) == 0)
1357 return;
1358
1359 shift = shifts[plane];
1360 REG_FLD_MOD(dispc, DISPC_OVL_ATTRIBUTES(plane), enable, shift, shift);
1361}
1362
1363static void dispc_mgr_set_size(struct dispc_device *dispc,
1364 enum omap_channel channel, u16 width, u16 height)
1365{
1366 u32 val;
1367
1368 val = FLD_VAL(height - 1, dispc->feat->mgr_height_start, 16) |
1369 FLD_VAL(width - 1, dispc->feat->mgr_width_start, 0);
1370
1371 dispc_write_reg(dispc, DISPC_SIZE_MGR(channel), val);
1372}
1373
1374static void dispc_init_fifos(struct dispc_device *dispc)
1375{
1376 u32 size;
1377 int fifo;
1378 u8 start, end;
1379 u32 unit;
1380 int i;
1381
1382 unit = dispc->feat->buffer_size_unit;
1383
1384 dispc_get_reg_field(dispc, FEAT_REG_FIFOSIZE, &start, &end);
1385
1386 for (fifo = 0; fifo < dispc->feat->num_fifos; ++fifo) {
1387 size = REG_GET(dispc, DISPC_OVL_FIFO_SIZE_STATUS(fifo),
1388 start, end);
1389 size *= unit;
1390 dispc->fifo_size[fifo] = size;
1391
1392 /*
1393 * By default fifos are mapped directly to overlays, fifo 0 to
1394 * ovl 0, fifo 1 to ovl 1, etc.
1395 */
1396 dispc->fifo_assignment[fifo] = fifo;
1397 }
1398
1399 /*
1400 * The GFX fifo on OMAP4 is smaller than the other fifos. The small fifo
1401 * causes problems with certain use cases, like using the tiler in 2D
1402 * mode. The below hack swaps the fifos of GFX and WB planes, thus
1403 * giving GFX plane a larger fifo. WB but should work fine with a
1404 * smaller fifo.
1405 */
1406 if (dispc->feat->gfx_fifo_workaround) {
1407 u32 v;
1408
1409 v = dispc_read_reg(dispc, DISPC_GLOBAL_BUFFER);
1410
1411 v = FLD_MOD(v, 4, 2, 0); /* GFX BUF top to WB */
1412 v = FLD_MOD(v, 4, 5, 3); /* GFX BUF bottom to WB */
1413 v = FLD_MOD(v, 0, 26, 24); /* WB BUF top to GFX */
1414 v = FLD_MOD(v, 0, 29, 27); /* WB BUF bottom to GFX */
1415
1416 dispc_write_reg(dispc, DISPC_GLOBAL_BUFFER, v);
1417
1418 dispc->fifo_assignment[OMAP_DSS_GFX] = OMAP_DSS_WB;
1419 dispc->fifo_assignment[OMAP_DSS_WB] = OMAP_DSS_GFX;
1420 }
1421
1422 /*
1423 * Setup default fifo thresholds.
1424 */
1425 for (i = 0; i < dispc_get_num_ovls(dispc); ++i) {
1426 u32 low, high;
1427 const bool use_fifomerge = false;
1428 const bool manual_update = false;
1429
1430 dispc_ovl_compute_fifo_thresholds(dispc, i, &low, &high,
1431 use_fifomerge, manual_update);
1432
1433 dispc_ovl_set_fifo_threshold(dispc, i, low, high);
1434 }
1435
1436 if (dispc->feat->has_writeback) {
1437 u32 low, high;
1438 const bool use_fifomerge = false;
1439 const bool manual_update = false;
1440
1441 dispc_ovl_compute_fifo_thresholds(dispc, OMAP_DSS_WB,
1442 &low, &high, use_fifomerge,
1443 manual_update);
1444
1445 dispc_ovl_set_fifo_threshold(dispc, OMAP_DSS_WB, low, high);
1446 }
1447}
1448
1449static u32 dispc_ovl_get_fifo_size(struct dispc_device *dispc,
1450 enum omap_plane_id plane)
1451{
1452 int fifo;
1453 u32 size = 0;
1454
1455 for (fifo = 0; fifo < dispc->feat->num_fifos; ++fifo) {
1456 if (dispc->fifo_assignment[fifo] == plane)
1457 size += dispc->fifo_size[fifo];
1458 }
1459
1460 return size;
1461}
1462
1463void dispc_ovl_set_fifo_threshold(struct dispc_device *dispc,
1464 enum omap_plane_id plane,
1465 u32 low, u32 high)
1466{
1467 u8 hi_start, hi_end, lo_start, lo_end;
1468 u32 unit;
1469
1470 unit = dispc->feat->buffer_size_unit;
1471
1472 WARN_ON(low % unit != 0);
1473 WARN_ON(high % unit != 0);
1474
1475 low /= unit;
1476 high /= unit;
1477
1478 dispc_get_reg_field(dispc, FEAT_REG_FIFOHIGHTHRESHOLD,
1479 &hi_start, &hi_end);
1480 dispc_get_reg_field(dispc, FEAT_REG_FIFOLOWTHRESHOLD,
1481 &lo_start, &lo_end);
1482
1483 DSSDBG("fifo(%d) threshold (bytes), old %u/%u, new %u/%u\n",
1484 plane,
1485 REG_GET(dispc, DISPC_OVL_FIFO_THRESHOLD(plane),
1486 lo_start, lo_end) * unit,
1487 REG_GET(dispc, DISPC_OVL_FIFO_THRESHOLD(plane),
1488 hi_start, hi_end) * unit,
1489 low * unit, high * unit);
1490
1491 dispc_write_reg(dispc, DISPC_OVL_FIFO_THRESHOLD(plane),
1492 FLD_VAL(high, hi_start, hi_end) |
1493 FLD_VAL(low, lo_start, lo_end));
1494
1495 /*
1496 * configure the preload to the pipeline's high threhold, if HT it's too
1497 * large for the preload field, set the threshold to the maximum value
1498 * that can be held by the preload register
1499 */
1500 if (dispc_has_feature(dispc, FEAT_PRELOAD) &&
1501 dispc->feat->set_max_preload && plane != OMAP_DSS_WB)
1502 dispc_write_reg(dispc, DISPC_OVL_PRELOAD(plane),
1503 min(high, 0xfffu));
1504}
1505
1506void dispc_enable_fifomerge(struct dispc_device *dispc, bool enable)
1507{
1508 if (!dispc_has_feature(dispc, FEAT_FIFO_MERGE)) {
1509 WARN_ON(enable);
1510 return;
1511 }
1512
1513 DSSDBG("FIFO merge %s\n", enable ? "enabled" : "disabled");
1514 REG_FLD_MOD(dispc, DISPC_CONFIG, enable ? 1 : 0, 14, 14);
1515}
1516
1517void dispc_ovl_compute_fifo_thresholds(struct dispc_device *dispc,
1518 enum omap_plane_id plane,
1519 u32 *fifo_low, u32 *fifo_high,
1520 bool use_fifomerge, bool manual_update)
1521{
1522 /*
1523 * All sizes are in bytes. Both the buffer and burst are made of
1524 * buffer_units, and the fifo thresholds must be buffer_unit aligned.
1525 */
1526 unsigned int buf_unit = dispc->feat->buffer_size_unit;
1527 unsigned int ovl_fifo_size, total_fifo_size, burst_size;
1528 int i;
1529
1530 burst_size = dispc_ovl_get_burst_size(dispc, plane);
1531 ovl_fifo_size = dispc_ovl_get_fifo_size(dispc, plane);
1532
1533 if (use_fifomerge) {
1534 total_fifo_size = 0;
1535 for (i = 0; i < dispc_get_num_ovls(dispc); ++i)
1536 total_fifo_size += dispc_ovl_get_fifo_size(dispc, i);
1537 } else {
1538 total_fifo_size = ovl_fifo_size;
1539 }
1540
1541 /*
1542 * We use the same low threshold for both fifomerge and non-fifomerge
1543 * cases, but for fifomerge we calculate the high threshold using the
1544 * combined fifo size
1545 */
1546
1547 if (manual_update && dispc_has_feature(dispc, FEAT_OMAP3_DSI_FIFO_BUG)) {
1548 *fifo_low = ovl_fifo_size - burst_size * 2;
1549 *fifo_high = total_fifo_size - burst_size;
1550 } else if (plane == OMAP_DSS_WB) {
1551 /*
1552 * Most optimal configuration for writeback is to push out data
1553 * to the interconnect the moment writeback pushes enough pixels
1554 * in the FIFO to form a burst
1555 */
1556 *fifo_low = 0;
1557 *fifo_high = burst_size;
1558 } else {
1559 *fifo_low = ovl_fifo_size - burst_size;
1560 *fifo_high = total_fifo_size - buf_unit;
1561 }
1562}
1563
1564static void dispc_ovl_set_mflag(struct dispc_device *dispc,
1565 enum omap_plane_id plane, bool enable)
1566{
1567 int bit;
1568
1569 if (plane == OMAP_DSS_GFX)
1570 bit = 14;
1571 else
1572 bit = 23;
1573
1574 REG_FLD_MOD(dispc, DISPC_OVL_ATTRIBUTES(plane), enable, bit, bit);
1575}
1576
1577static void dispc_ovl_set_mflag_threshold(struct dispc_device *dispc,
1578 enum omap_plane_id plane,
1579 int low, int high)
1580{
1581 dispc_write_reg(dispc, DISPC_OVL_MFLAG_THRESHOLD(plane),
1582 FLD_VAL(high, 31, 16) | FLD_VAL(low, 15, 0));
1583}
1584
1585static void dispc_init_mflag(struct dispc_device *dispc)
1586{
1587 int i;
1588
1589 /*
1590 * HACK: NV12 color format and MFLAG seem to have problems working
1591 * together: using two displays, and having an NV12 overlay on one of
1592 * the displays will cause underflows/synclosts when MFLAG_CTRL=2.
1593 * Changing MFLAG thresholds and PRELOAD to certain values seem to
1594 * remove the errors, but there doesn't seem to be a clear logic on
1595 * which values work and which not.
1596 *
1597 * As a work-around, set force MFLAG to always on.
1598 */
1599 dispc_write_reg(dispc, DISPC_GLOBAL_MFLAG_ATTRIBUTE,
1600 (1 << 0) | /* MFLAG_CTRL = force always on */
1601 (0 << 2)); /* MFLAG_START = disable */
1602
1603 for (i = 0; i < dispc_get_num_ovls(dispc); ++i) {
1604 u32 size = dispc_ovl_get_fifo_size(dispc, i);
1605 u32 unit = dispc->feat->buffer_size_unit;
1606 u32 low, high;
1607
1608 dispc_ovl_set_mflag(dispc, i, true);
1609
1610 /*
1611 * Simulation team suggests below thesholds:
1612 * HT = fifosize * 5 / 8;
1613 * LT = fifosize * 4 / 8;
1614 */
1615
1616 low = size * 4 / 8 / unit;
1617 high = size * 5 / 8 / unit;
1618
1619 dispc_ovl_set_mflag_threshold(dispc, i, low, high);
1620 }
1621
1622 if (dispc->feat->has_writeback) {
1623 u32 size = dispc_ovl_get_fifo_size(dispc, OMAP_DSS_WB);
1624 u32 unit = dispc->feat->buffer_size_unit;
1625 u32 low, high;
1626
1627 dispc_ovl_set_mflag(dispc, OMAP_DSS_WB, true);
1628
1629 /*
1630 * Simulation team suggests below thesholds:
1631 * HT = fifosize * 5 / 8;
1632 * LT = fifosize * 4 / 8;
1633 */
1634
1635 low = size * 4 / 8 / unit;
1636 high = size * 5 / 8 / unit;
1637
1638 dispc_ovl_set_mflag_threshold(dispc, OMAP_DSS_WB, low, high);
1639 }
1640}
1641
1642static void dispc_ovl_set_fir(struct dispc_device *dispc,
1643 enum omap_plane_id plane,
1644 int hinc, int vinc,
1645 enum omap_color_component color_comp)
1646{
1647 u32 val;
1648
1649 if (color_comp == DISPC_COLOR_COMPONENT_RGB_Y) {
1650 u8 hinc_start, hinc_end, vinc_start, vinc_end;
1651
1652 dispc_get_reg_field(dispc, FEAT_REG_FIRHINC,
1653 &hinc_start, &hinc_end);
1654 dispc_get_reg_field(dispc, FEAT_REG_FIRVINC,
1655 &vinc_start, &vinc_end);
1656 val = FLD_VAL(vinc, vinc_start, vinc_end) |
1657 FLD_VAL(hinc, hinc_start, hinc_end);
1658
1659 dispc_write_reg(dispc, DISPC_OVL_FIR(plane), val);
1660 } else {
1661 val = FLD_VAL(vinc, 28, 16) | FLD_VAL(hinc, 12, 0);
1662 dispc_write_reg(dispc, DISPC_OVL_FIR2(plane), val);
1663 }
1664}
1665
1666static void dispc_ovl_set_vid_accu0(struct dispc_device *dispc,
1667 enum omap_plane_id plane, int haccu,
1668 int vaccu)
1669{
1670 u32 val;
1671 u8 hor_start, hor_end, vert_start, vert_end;
1672
1673 dispc_get_reg_field(dispc, FEAT_REG_HORIZONTALACCU,
1674 &hor_start, &hor_end);
1675 dispc_get_reg_field(dispc, FEAT_REG_VERTICALACCU,
1676 &vert_start, &vert_end);
1677
1678 val = FLD_VAL(vaccu, vert_start, vert_end) |
1679 FLD_VAL(haccu, hor_start, hor_end);
1680
1681 dispc_write_reg(dispc, DISPC_OVL_ACCU0(plane), val);
1682}
1683
1684static void dispc_ovl_set_vid_accu1(struct dispc_device *dispc,
1685 enum omap_plane_id plane, int haccu,
1686 int vaccu)
1687{
1688 u32 val;
1689 u8 hor_start, hor_end, vert_start, vert_end;
1690
1691 dispc_get_reg_field(dispc, FEAT_REG_HORIZONTALACCU,
1692 &hor_start, &hor_end);
1693 dispc_get_reg_field(dispc, FEAT_REG_VERTICALACCU,
1694 &vert_start, &vert_end);
1695
1696 val = FLD_VAL(vaccu, vert_start, vert_end) |
1697 FLD_VAL(haccu, hor_start, hor_end);
1698
1699 dispc_write_reg(dispc, DISPC_OVL_ACCU1(plane), val);
1700}
1701
1702static void dispc_ovl_set_vid_accu2_0(struct dispc_device *dispc,
1703 enum omap_plane_id plane, int haccu,
1704 int vaccu)
1705{
1706 u32 val;
1707
1708 val = FLD_VAL(vaccu, 26, 16) | FLD_VAL(haccu, 10, 0);
1709 dispc_write_reg(dispc, DISPC_OVL_ACCU2_0(plane), val);
1710}
1711
1712static void dispc_ovl_set_vid_accu2_1(struct dispc_device *dispc,
1713 enum omap_plane_id plane, int haccu,
1714 int vaccu)
1715{
1716 u32 val;
1717
1718 val = FLD_VAL(vaccu, 26, 16) | FLD_VAL(haccu, 10, 0);
1719 dispc_write_reg(dispc, DISPC_OVL_ACCU2_1(plane), val);
1720}
1721
1722static void dispc_ovl_set_scale_param(struct dispc_device *dispc,
1723 enum omap_plane_id plane,
1724 u16 orig_width, u16 orig_height,
1725 u16 out_width, u16 out_height,
1726 bool five_taps, u8 rotation,
1727 enum omap_color_component color_comp)
1728{
1729 int fir_hinc, fir_vinc;
1730
1731 fir_hinc = 1024 * orig_width / out_width;
1732 fir_vinc = 1024 * orig_height / out_height;
1733
1734 dispc_ovl_set_scale_coef(dispc, plane, fir_hinc, fir_vinc, five_taps,
1735 color_comp);
1736 dispc_ovl_set_fir(dispc, plane, fir_hinc, fir_vinc, color_comp);
1737}
1738
1739static void dispc_ovl_set_accu_uv(struct dispc_device *dispc,
1740 enum omap_plane_id plane,
1741 u16 orig_width, u16 orig_height,
1742 u16 out_width, u16 out_height,
1743 bool ilace, u32 fourcc, u8 rotation)
1744{
1745 int h_accu2_0, h_accu2_1;
1746 int v_accu2_0, v_accu2_1;
1747 int chroma_hinc, chroma_vinc;
1748 int idx;
1749
1750 struct accu {
1751 s8 h0_m, h0_n;
1752 s8 h1_m, h1_n;
1753 s8 v0_m, v0_n;
1754 s8 v1_m, v1_n;
1755 };
1756
1757 const struct accu *accu_table;
1758 const struct accu *accu_val;
1759
1760 static const struct accu accu_nv12[4] = {
1761 { 0, 1, 0, 1 , -1, 2, 0, 1 },
1762 { 1, 2, -3, 4 , 0, 1, 0, 1 },
1763 { -1, 1, 0, 1 , -1, 2, 0, 1 },
1764 { -1, 2, -1, 2 , -1, 1, 0, 1 },
1765 };
1766
1767 static const struct accu accu_nv12_ilace[4] = {
1768 { 0, 1, 0, 1 , -3, 4, -1, 4 },
1769 { -1, 4, -3, 4 , 0, 1, 0, 1 },
1770 { -1, 1, 0, 1 , -1, 4, -3, 4 },
1771 { -3, 4, -3, 4 , -1, 1, 0, 1 },
1772 };
1773
1774 static const struct accu accu_yuv[4] = {
1775 { 0, 1, 0, 1, 0, 1, 0, 1 },
1776 { 0, 1, 0, 1, 0, 1, 0, 1 },
1777 { -1, 1, 0, 1, 0, 1, 0, 1 },
1778 { 0, 1, 0, 1, -1, 1, 0, 1 },
1779 };
1780
1781 /* Note: DSS HW rotates clockwise, DRM_MODE_ROTATE_* counter-clockwise */
1782 switch (rotation & DRM_MODE_ROTATE_MASK) {
1783 default:
1784 case DRM_MODE_ROTATE_0:
1785 idx = 0;
1786 break;
1787 case DRM_MODE_ROTATE_90:
1788 idx = 3;
1789 break;
1790 case DRM_MODE_ROTATE_180:
1791 idx = 2;
1792 break;
1793 case DRM_MODE_ROTATE_270:
1794 idx = 1;
1795 break;
1796 }
1797
1798 switch (fourcc) {
1799 case DRM_FORMAT_NV12:
1800 if (ilace)
1801 accu_table = accu_nv12_ilace;
1802 else
1803 accu_table = accu_nv12;
1804 break;
1805 case DRM_FORMAT_YUYV:
1806 case DRM_FORMAT_UYVY:
1807 accu_table = accu_yuv;
1808 break;
1809 default:
1810 BUG();
1811 return;
1812 }
1813
1814 accu_val = &accu_table[idx];
1815
1816 chroma_hinc = 1024 * orig_width / out_width;
1817 chroma_vinc = 1024 * orig_height / out_height;
1818
1819 h_accu2_0 = (accu_val->h0_m * chroma_hinc / accu_val->h0_n) % 1024;
1820 h_accu2_1 = (accu_val->h1_m * chroma_hinc / accu_val->h1_n) % 1024;
1821 v_accu2_0 = (accu_val->v0_m * chroma_vinc / accu_val->v0_n) % 1024;
1822 v_accu2_1 = (accu_val->v1_m * chroma_vinc / accu_val->v1_n) % 1024;
1823
1824 dispc_ovl_set_vid_accu2_0(dispc, plane, h_accu2_0, v_accu2_0);
1825 dispc_ovl_set_vid_accu2_1(dispc, plane, h_accu2_1, v_accu2_1);
1826}
1827
1828static void dispc_ovl_set_scaling_common(struct dispc_device *dispc,
1829 enum omap_plane_id plane,
1830 u16 orig_width, u16 orig_height,
1831 u16 out_width, u16 out_height,
1832 bool ilace, bool five_taps,
1833 bool fieldmode, u32 fourcc,
1834 u8 rotation)
1835{
1836 int accu0 = 0;
1837 int accu1 = 0;
1838 u32 l;
1839
1840 dispc_ovl_set_scale_param(dispc, plane, orig_width, orig_height,
1841 out_width, out_height, five_taps,
1842 rotation, DISPC_COLOR_COMPONENT_RGB_Y);
1843 l = dispc_read_reg(dispc, DISPC_OVL_ATTRIBUTES(plane));
1844
1845 /* RESIZEENABLE and VERTICALTAPS */
1846 l &= ~((0x3 << 5) | (0x1 << 21));
1847 l |= (orig_width != out_width) ? (1 << 5) : 0;
1848 l |= (orig_height != out_height) ? (1 << 6) : 0;
1849 l |= five_taps ? (1 << 21) : 0;
1850
1851 /* VRESIZECONF and HRESIZECONF */
1852 if (dispc_has_feature(dispc, FEAT_RESIZECONF)) {
1853 l &= ~(0x3 << 7);
1854 l |= (orig_width <= out_width) ? 0 : (1 << 7);
1855 l |= (orig_height <= out_height) ? 0 : (1 << 8);
1856 }
1857
1858 /* LINEBUFFERSPLIT */
1859 if (dispc_has_feature(dispc, FEAT_LINEBUFFERSPLIT)) {
1860 l &= ~(0x1 << 22);
1861 l |= five_taps ? (1 << 22) : 0;
1862 }
1863
1864 dispc_write_reg(dispc, DISPC_OVL_ATTRIBUTES(plane), l);
1865
1866 /*
1867 * field 0 = even field = bottom field
1868 * field 1 = odd field = top field
1869 */
1870 if (ilace && !fieldmode) {
1871 accu1 = 0;
1872 accu0 = ((1024 * orig_height / out_height) / 2) & 0x3ff;
1873 if (accu0 >= 1024/2) {
1874 accu1 = 1024/2;
1875 accu0 -= accu1;
1876 }
1877 }
1878
1879 dispc_ovl_set_vid_accu0(dispc, plane, 0, accu0);
1880 dispc_ovl_set_vid_accu1(dispc, plane, 0, accu1);
1881}
1882
1883static void dispc_ovl_set_scaling_uv(struct dispc_device *dispc,
1884 enum omap_plane_id plane,
1885 u16 orig_width, u16 orig_height,
1886 u16 out_width, u16 out_height,
1887 bool ilace, bool five_taps,
1888 bool fieldmode, u32 fourcc,
1889 u8 rotation)
1890{
1891 int scale_x = out_width != orig_width;
1892 int scale_y = out_height != orig_height;
1893 bool chroma_upscale = plane != OMAP_DSS_WB;
1894 const struct drm_format_info *info;
1895
1896 info = drm_format_info(fourcc);
1897
1898 if (!dispc_has_feature(dispc, FEAT_HANDLE_UV_SEPARATE))
1899 return;
1900
1901 if (!info->is_yuv) {
1902 /* reset chroma resampling for RGB formats */
1903 if (plane != OMAP_DSS_WB)
1904 REG_FLD_MOD(dispc, DISPC_OVL_ATTRIBUTES2(plane),
1905 0, 8, 8);
1906 return;
1907 }
1908
1909 dispc_ovl_set_accu_uv(dispc, plane, orig_width, orig_height, out_width,
1910 out_height, ilace, fourcc, rotation);
1911
1912 switch (fourcc) {
1913 case DRM_FORMAT_NV12:
1914 if (chroma_upscale) {
1915 /* UV is subsampled by 2 horizontally and vertically */
1916 orig_height >>= 1;
1917 orig_width >>= 1;
1918 } else {
1919 /* UV is downsampled by 2 horizontally and vertically */
1920 orig_height <<= 1;
1921 orig_width <<= 1;
1922 }
1923
1924 break;
1925 case DRM_FORMAT_YUYV:
1926 case DRM_FORMAT_UYVY:
1927 /* For YUV422 with 90/270 rotation, we don't upsample chroma */
1928 if (!drm_rotation_90_or_270(rotation)) {
1929 if (chroma_upscale)
1930 /* UV is subsampled by 2 horizontally */
1931 orig_width >>= 1;
1932 else
1933 /* UV is downsampled by 2 horizontally */
1934 orig_width <<= 1;
1935 }
1936
1937 /* must use FIR for YUV422 if rotated */
1938 if ((rotation & DRM_MODE_ROTATE_MASK) != DRM_MODE_ROTATE_0)
1939 scale_x = scale_y = true;
1940
1941 break;
1942 default:
1943 BUG();
1944 return;
1945 }
1946
1947 if (out_width != orig_width)
1948 scale_x = true;
1949 if (out_height != orig_height)
1950 scale_y = true;
1951
1952 dispc_ovl_set_scale_param(dispc, plane, orig_width, orig_height,
1953 out_width, out_height, five_taps,
1954 rotation, DISPC_COLOR_COMPONENT_UV);
1955
1956 if (plane != OMAP_DSS_WB)
1957 REG_FLD_MOD(dispc, DISPC_OVL_ATTRIBUTES2(plane),
1958 (scale_x || scale_y) ? 1 : 0, 8, 8);
1959
1960 /* set H scaling */
1961 REG_FLD_MOD(dispc, DISPC_OVL_ATTRIBUTES(plane), scale_x ? 1 : 0, 5, 5);
1962 /* set V scaling */
1963 REG_FLD_MOD(dispc, DISPC_OVL_ATTRIBUTES(plane), scale_y ? 1 : 0, 6, 6);
1964}
1965
1966static void dispc_ovl_set_scaling(struct dispc_device *dispc,
1967 enum omap_plane_id plane,
1968 u16 orig_width, u16 orig_height,
1969 u16 out_width, u16 out_height,
1970 bool ilace, bool five_taps,
1971 bool fieldmode, u32 fourcc,
1972 u8 rotation)
1973{
1974 BUG_ON(plane == OMAP_DSS_GFX);
1975
1976 dispc_ovl_set_scaling_common(dispc, plane, orig_width, orig_height,
1977 out_width, out_height, ilace, five_taps,
1978 fieldmode, fourcc, rotation);
1979
1980 dispc_ovl_set_scaling_uv(dispc, plane, orig_width, orig_height,
1981 out_width, out_height, ilace, five_taps,
1982 fieldmode, fourcc, rotation);
1983}
1984
1985static void dispc_ovl_set_rotation_attrs(struct dispc_device *dispc,
1986 enum omap_plane_id plane, u8 rotation,
1987 enum omap_dss_rotation_type rotation_type,
1988 u32 fourcc)
1989{
1990 bool row_repeat = false;
1991 int vidrot = 0;
1992
1993 /* Note: DSS HW rotates clockwise, DRM_MODE_ROTATE_* counter-clockwise */
1994 if (fourcc == DRM_FORMAT_YUYV || fourcc == DRM_FORMAT_UYVY) {
1995
1996 if (rotation & DRM_MODE_REFLECT_X) {
1997 switch (rotation & DRM_MODE_ROTATE_MASK) {
1998 case DRM_MODE_ROTATE_0:
1999 vidrot = 2;
2000 break;
2001 case DRM_MODE_ROTATE_90:
2002 vidrot = 1;
2003 break;
2004 case DRM_MODE_ROTATE_180:
2005 vidrot = 0;
2006 break;
2007 case DRM_MODE_ROTATE_270:
2008 vidrot = 3;
2009 break;
2010 }
2011 } else {
2012 switch (rotation & DRM_MODE_ROTATE_MASK) {
2013 case DRM_MODE_ROTATE_0:
2014 vidrot = 0;
2015 break;
2016 case DRM_MODE_ROTATE_90:
2017 vidrot = 3;
2018 break;
2019 case DRM_MODE_ROTATE_180:
2020 vidrot = 2;
2021 break;
2022 case DRM_MODE_ROTATE_270:
2023 vidrot = 1;
2024 break;
2025 }
2026 }
2027
2028 if (drm_rotation_90_or_270(rotation))
2029 row_repeat = true;
2030 else
2031 row_repeat = false;
2032 }
2033
2034 /*
2035 * OMAP4/5 Errata i631:
2036 * NV12 in 1D mode must use ROTATION=1. Otherwise DSS will fetch extra
2037 * rows beyond the framebuffer, which may cause OCP error.
2038 */
2039 if (fourcc == DRM_FORMAT_NV12 && rotation_type != OMAP_DSS_ROT_TILER)
2040 vidrot = 1;
2041
2042 REG_FLD_MOD(dispc, DISPC_OVL_ATTRIBUTES(plane), vidrot, 13, 12);
2043 if (dispc_has_feature(dispc, FEAT_ROWREPEATENABLE))
2044 REG_FLD_MOD(dispc, DISPC_OVL_ATTRIBUTES(plane),
2045 row_repeat ? 1 : 0, 18, 18);
2046
2047 if (dispc_ovl_color_mode_supported(dispc, plane, DRM_FORMAT_NV12)) {
2048 bool doublestride =
2049 fourcc == DRM_FORMAT_NV12 &&
2050 rotation_type == OMAP_DSS_ROT_TILER &&
2051 !drm_rotation_90_or_270(rotation);
2052
2053 /* DOUBLESTRIDE */
2054 REG_FLD_MOD(dispc, DISPC_OVL_ATTRIBUTES(plane),
2055 doublestride, 22, 22);
2056 }
2057}
2058
2059static int color_mode_to_bpp(u32 fourcc)
2060{
2061 switch (fourcc) {
2062 case DRM_FORMAT_NV12:
2063 return 8;
2064 case DRM_FORMAT_RGBX4444:
2065 case DRM_FORMAT_RGB565:
2066 case DRM_FORMAT_ARGB4444:
2067 case DRM_FORMAT_YUYV:
2068 case DRM_FORMAT_UYVY:
2069 case DRM_FORMAT_RGBA4444:
2070 case DRM_FORMAT_XRGB4444:
2071 case DRM_FORMAT_ARGB1555:
2072 case DRM_FORMAT_XRGB1555:
2073 return 16;
2074 case DRM_FORMAT_RGB888:
2075 return 24;
2076 case DRM_FORMAT_XRGB8888:
2077 case DRM_FORMAT_ARGB8888:
2078 case DRM_FORMAT_RGBA8888:
2079 case DRM_FORMAT_RGBX8888:
2080 return 32;
2081 default:
2082 BUG();
2083 return 0;
2084 }
2085}
2086
2087static s32 pixinc(int pixels, u8 ps)
2088{
2089 if (pixels == 1)
2090 return 1;
2091 else if (pixels > 1)
2092 return 1 + (pixels - 1) * ps;
2093 else if (pixels < 0)
2094 return 1 - (-pixels + 1) * ps;
2095
2096 BUG();
2097}
2098
2099static void calc_offset(u16 screen_width, u16 width,
2100 u32 fourcc, bool fieldmode, unsigned int field_offset,
2101 unsigned int *offset0, unsigned int *offset1,
2102 s32 *row_inc, s32 *pix_inc, int x_predecim, int y_predecim,
2103 enum omap_dss_rotation_type rotation_type, u8 rotation)
2104{
2105 u8 ps;
2106
2107 ps = color_mode_to_bpp(fourcc) / 8;
2108
2109 DSSDBG("scrw %d, width %d\n", screen_width, width);
2110
2111 if (rotation_type == OMAP_DSS_ROT_TILER &&
2112 (fourcc == DRM_FORMAT_UYVY || fourcc == DRM_FORMAT_YUYV) &&
2113 drm_rotation_90_or_270(rotation)) {
2114 /*
2115 * HACK: ROW_INC needs to be calculated with TILER units.
2116 * We get such 'screen_width' that multiplying it with the
2117 * YUV422 pixel size gives the correct TILER container width.
2118 * However, 'width' is in pixels and multiplying it with YUV422
2119 * pixel size gives incorrect result. We thus multiply it here
2120 * with 2 to match the 32 bit TILER unit size.
2121 */
2122 width *= 2;
2123 }
2124
2125 /*
2126 * field 0 = even field = bottom field
2127 * field 1 = odd field = top field
2128 */
2129 *offset0 = field_offset * screen_width * ps;
2130 *offset1 = 0;
2131
2132 *row_inc = pixinc(1 + (y_predecim * screen_width - width * x_predecim) +
2133 (fieldmode ? screen_width : 0), ps);
2134 if (fourcc == DRM_FORMAT_YUYV || fourcc == DRM_FORMAT_UYVY)
2135 *pix_inc = pixinc(x_predecim, 2 * ps);
2136 else
2137 *pix_inc = pixinc(x_predecim, ps);
2138}
2139
2140/*
2141 * This function is used to avoid synclosts in OMAP3, because of some
2142 * undocumented horizontal position and timing related limitations.
2143 */
2144static int check_horiz_timing_omap3(unsigned long pclk, unsigned long lclk,
2145 const struct videomode *vm, u16 pos_x,
2146 u16 width, u16 height, u16 out_width, u16 out_height,
2147 bool five_taps)
2148{
2149 const int ds = DIV_ROUND_UP(height, out_height);
2150 unsigned long nonactive;
2151 static const u8 limits[3] = { 8, 10, 20 };
2152 u64 val, blank;
2153 int i;
2154
2155 nonactive = vm->hactive + vm->hfront_porch + vm->hsync_len +
2156 vm->hback_porch - out_width;
2157
2158 i = 0;
2159 if (out_height < height)
2160 i++;
2161 if (out_width < width)
2162 i++;
2163 blank = div_u64((u64)(vm->hback_porch + vm->hsync_len + vm->hfront_porch) *
2164 lclk, pclk);
2165 DSSDBG("blanking period + ppl = %llu (limit = %u)\n", blank, limits[i]);
2166 if (blank <= limits[i])
2167 return -EINVAL;
2168
2169 /* FIXME add checks for 3-tap filter once the limitations are known */
2170 if (!five_taps)
2171 return 0;
2172
2173 /*
2174 * Pixel data should be prepared before visible display point starts.
2175 * So, atleast DS-2 lines must have already been fetched by DISPC
2176 * during nonactive - pos_x period.
2177 */
2178 val = div_u64((u64)(nonactive - pos_x) * lclk, pclk);
2179 DSSDBG("(nonactive - pos_x) * pcd = %llu max(0, DS - 2) * width = %d\n",
2180 val, max(0, ds - 2) * width);
2181 if (val < max(0, ds - 2) * width)
2182 return -EINVAL;
2183
2184 /*
2185 * All lines need to be refilled during the nonactive period of which
2186 * only one line can be loaded during the active period. So, atleast
2187 * DS - 1 lines should be loaded during nonactive period.
2188 */
2189 val = div_u64((u64)nonactive * lclk, pclk);
2190 DSSDBG("nonactive * pcd = %llu, max(0, DS - 1) * width = %d\n",
2191 val, max(0, ds - 1) * width);
2192 if (val < max(0, ds - 1) * width)
2193 return -EINVAL;
2194
2195 return 0;
2196}
2197
2198static unsigned long calc_core_clk_five_taps(unsigned long pclk,
2199 const struct videomode *vm, u16 width,
2200 u16 height, u16 out_width, u16 out_height,
2201 u32 fourcc)
2202{
2203 u32 core_clk = 0;
2204 u64 tmp;
2205
2206 if (height <= out_height && width <= out_width)
2207 return (unsigned long) pclk;
2208
2209 if (height > out_height) {
2210 unsigned int ppl = vm->hactive;
2211
2212 tmp = (u64)pclk * height * out_width;
2213 do_div(tmp, 2 * out_height * ppl);
2214 core_clk = tmp;
2215
2216 if (height > 2 * out_height) {
2217 if (ppl == out_width)
2218 return 0;
2219
2220 tmp = (u64)pclk * (height - 2 * out_height) * out_width;
2221 do_div(tmp, 2 * out_height * (ppl - out_width));
2222 core_clk = max_t(u32, core_clk, tmp);
2223 }
2224 }
2225
2226 if (width > out_width) {
2227 tmp = (u64)pclk * width;
2228 do_div(tmp, out_width);
2229 core_clk = max_t(u32, core_clk, tmp);
2230
2231 if (fourcc == DRM_FORMAT_XRGB8888)
2232 core_clk <<= 1;
2233 }
2234
2235 return core_clk;
2236}
2237
2238static unsigned long calc_core_clk_24xx(unsigned long pclk, u16 width,
2239 u16 height, u16 out_width, u16 out_height, bool mem_to_mem)
2240{
2241 if (height > out_height && width > out_width)
2242 return pclk * 4;
2243 else
2244 return pclk * 2;
2245}
2246
2247static unsigned long calc_core_clk_34xx(unsigned long pclk, u16 width,
2248 u16 height, u16 out_width, u16 out_height, bool mem_to_mem)
2249{
2250 unsigned int hf, vf;
2251
2252 /*
2253 * FIXME how to determine the 'A' factor
2254 * for the no downscaling case ?
2255 */
2256
2257 if (width > 3 * out_width)
2258 hf = 4;
2259 else if (width > 2 * out_width)
2260 hf = 3;
2261 else if (width > out_width)
2262 hf = 2;
2263 else
2264 hf = 1;
2265 if (height > out_height)
2266 vf = 2;
2267 else
2268 vf = 1;
2269
2270 return pclk * vf * hf;
2271}
2272
2273static unsigned long calc_core_clk_44xx(unsigned long pclk, u16 width,
2274 u16 height, u16 out_width, u16 out_height, bool mem_to_mem)
2275{
2276 /*
2277 * If the overlay/writeback is in mem to mem mode, there are no
2278 * downscaling limitations with respect to pixel clock, return 1 as
2279 * required core clock to represent that we have sufficient enough
2280 * core clock to do maximum downscaling
2281 */
2282 if (mem_to_mem)
2283 return 1;
2284
2285 if (width > out_width)
2286 return DIV_ROUND_UP(pclk, out_width) * width;
2287 else
2288 return pclk;
2289}
2290
2291static int dispc_ovl_calc_scaling_24xx(struct dispc_device *dispc,
2292 unsigned long pclk, unsigned long lclk,
2293 const struct videomode *vm,
2294 u16 width, u16 height,
2295 u16 out_width, u16 out_height,
2296 u32 fourcc, bool *five_taps,
2297 int *x_predecim, int *y_predecim,
2298 int *decim_x, int *decim_y,
2299 u16 pos_x, unsigned long *core_clk,
2300 bool mem_to_mem)
2301{
2302 int error;
2303 u16 in_width, in_height;
2304 int min_factor = min(*decim_x, *decim_y);
2305 const int maxsinglelinewidth = dispc->feat->max_line_width;
2306
2307 *five_taps = false;
2308
2309 do {
2310 in_height = height / *decim_y;
2311 in_width = width / *decim_x;
2312 *core_clk = dispc->feat->calc_core_clk(pclk, in_width,
2313 in_height, out_width, out_height, mem_to_mem);
2314 error = (in_width > maxsinglelinewidth || !*core_clk ||
2315 *core_clk > dispc_core_clk_rate(dispc));
2316 if (error) {
2317 if (*decim_x == *decim_y) {
2318 *decim_x = min_factor;
2319 ++*decim_y;
2320 } else {
2321 swap(*decim_x, *decim_y);
2322 if (*decim_x < *decim_y)
2323 ++*decim_x;
2324 }
2325 }
2326 } while (*decim_x <= *x_predecim && *decim_y <= *y_predecim && error);
2327
2328 if (error) {
2329 DSSERR("failed to find scaling settings\n");
2330 return -EINVAL;
2331 }
2332
2333 if (in_width > maxsinglelinewidth) {
2334 DSSERR("Cannot scale max input width exceeded\n");
2335 return -EINVAL;
2336 }
2337 return 0;
2338}
2339
2340static int dispc_ovl_calc_scaling_34xx(struct dispc_device *dispc,
2341 unsigned long pclk, unsigned long lclk,
2342 const struct videomode *vm,
2343 u16 width, u16 height,
2344 u16 out_width, u16 out_height,
2345 u32 fourcc, bool *five_taps,
2346 int *x_predecim, int *y_predecim,
2347 int *decim_x, int *decim_y,
2348 u16 pos_x, unsigned long *core_clk,
2349 bool mem_to_mem)
2350{
2351 int error;
2352 u16 in_width, in_height;
2353 const int maxsinglelinewidth = dispc->feat->max_line_width;
2354
2355 do {
2356 in_height = height / *decim_y;
2357 in_width = width / *decim_x;
2358 *five_taps = in_height > out_height;
2359
2360 if (in_width > maxsinglelinewidth)
2361 if (in_height > out_height &&
2362 in_height < out_height * 2)
2363 *five_taps = false;
2364again:
2365 if (*five_taps)
2366 *core_clk = calc_core_clk_five_taps(pclk, vm,
2367 in_width, in_height, out_width,
2368 out_height, fourcc);
2369 else
2370 *core_clk = dispc->feat->calc_core_clk(pclk, in_width,
2371 in_height, out_width, out_height,
2372 mem_to_mem);
2373
2374 error = check_horiz_timing_omap3(pclk, lclk, vm,
2375 pos_x, in_width, in_height, out_width,
2376 out_height, *five_taps);
2377 if (error && *five_taps) {
2378 *five_taps = false;
2379 goto again;
2380 }
2381
2382 error = (error || in_width > maxsinglelinewidth * 2 ||
2383 (in_width > maxsinglelinewidth && *five_taps) ||
2384 !*core_clk || *core_clk > dispc_core_clk_rate(dispc));
2385
2386 if (!error) {
2387 /* verify that we're inside the limits of scaler */
2388 if (in_width / 4 > out_width)
2389 error = 1;
2390
2391 if (*five_taps) {
2392 if (in_height / 4 > out_height)
2393 error = 1;
2394 } else {
2395 if (in_height / 2 > out_height)
2396 error = 1;
2397 }
2398 }
2399
2400 if (error)
2401 ++*decim_y;
2402 } while (*decim_x <= *x_predecim && *decim_y <= *y_predecim && error);
2403
2404 if (error) {
2405 DSSERR("failed to find scaling settings\n");
2406 return -EINVAL;
2407 }
2408
2409 if (check_horiz_timing_omap3(pclk, lclk, vm, pos_x, in_width,
2410 in_height, out_width, out_height, *five_taps)) {
2411 DSSERR("horizontal timing too tight\n");
2412 return -EINVAL;
2413 }
2414
2415 if (in_width > (maxsinglelinewidth * 2)) {
2416 DSSERR("Cannot setup scaling\n");
2417 DSSERR("width exceeds maximum width possible\n");
2418 return -EINVAL;
2419 }
2420
2421 if (in_width > maxsinglelinewidth && *five_taps) {
2422 DSSERR("cannot setup scaling with five taps\n");
2423 return -EINVAL;
2424 }
2425 return 0;
2426}
2427
2428static int dispc_ovl_calc_scaling_44xx(struct dispc_device *dispc,
2429 unsigned long pclk, unsigned long lclk,
2430 const struct videomode *vm,
2431 u16 width, u16 height,
2432 u16 out_width, u16 out_height,
2433 u32 fourcc, bool *five_taps,
2434 int *x_predecim, int *y_predecim,
2435 int *decim_x, int *decim_y,
2436 u16 pos_x, unsigned long *core_clk,
2437 bool mem_to_mem)
2438{
2439 u16 in_width, in_width_max;
2440 int decim_x_min = *decim_x;
2441 u16 in_height = height / *decim_y;
2442 const int maxsinglelinewidth = dispc->feat->max_line_width;
2443 const int maxdownscale = dispc->feat->max_downscale;
2444
2445 if (mem_to_mem) {
2446 in_width_max = out_width * maxdownscale;
2447 } else {
2448 in_width_max = dispc_core_clk_rate(dispc)
2449 / DIV_ROUND_UP(pclk, out_width);
2450 }
2451
2452 *decim_x = DIV_ROUND_UP(width, in_width_max);
2453
2454 *decim_x = max(*decim_x, decim_x_min);
2455 if (*decim_x > *x_predecim)
2456 return -EINVAL;
2457
2458 do {
2459 in_width = width / *decim_x;
2460 } while (*decim_x <= *x_predecim &&
2461 in_width > maxsinglelinewidth && ++*decim_x);
2462
2463 if (in_width > maxsinglelinewidth) {
2464 DSSERR("Cannot scale width exceeds max line width\n");
2465 return -EINVAL;
2466 }
2467
2468 if (*decim_x > 4 && fourcc != DRM_FORMAT_NV12) {
2469 /*
2470 * Let's disable all scaling that requires horizontal
2471 * decimation with higher factor than 4, until we have
2472 * better estimates of what we can and can not
2473 * do. However, NV12 color format appears to work Ok
2474 * with all decimation factors.
2475 *
2476 * When decimating horizontally by more that 4 the dss
2477 * is not able to fetch the data in burst mode. When
2478 * this happens it is hard to tell if there enough
2479 * bandwidth. Despite what theory says this appears to
2480 * be true also for 16-bit color formats.
2481 */
2482 DSSERR("Not enough bandwidth, too much downscaling (x-decimation factor %d > 4)\n", *decim_x);
2483
2484 return -EINVAL;
2485 }
2486
2487 *core_clk = dispc->feat->calc_core_clk(pclk, in_width, in_height,
2488 out_width, out_height, mem_to_mem);
2489 return 0;
2490}
2491
2492enum omap_overlay_caps dispc_ovl_get_caps(struct dispc_device *dispc, enum omap_plane_id plane)
2493{
2494 return dispc->feat->overlay_caps[plane];
2495}
2496
2497#define DIV_FRAC(dividend, divisor) \
2498 ((dividend) * 100 / (divisor) - ((dividend) / (divisor) * 100))
2499
2500static int dispc_ovl_calc_scaling(struct dispc_device *dispc,
2501 enum omap_plane_id plane,
2502 unsigned long pclk, unsigned long lclk,
2503 enum omap_overlay_caps caps,
2504 const struct videomode *vm,
2505 u16 width, u16 height,
2506 u16 out_width, u16 out_height,
2507 u32 fourcc, bool *five_taps,
2508 int *x_predecim, int *y_predecim, u16 pos_x,
2509 enum omap_dss_rotation_type rotation_type,
2510 bool mem_to_mem)
2511{
2512 int maxhdownscale = dispc->feat->max_downscale;
2513 int maxvdownscale = dispc->feat->max_downscale;
2514 const int max_decim_limit = 16;
2515 unsigned long core_clk = 0;
2516 int decim_x, decim_y, ret;
2517
2518 if (width == out_width && height == out_height)
2519 return 0;
2520
2521 if (dispc->feat->supported_scaler_color_modes) {
2522 const u32 *modes = dispc->feat->supported_scaler_color_modes;
2523 unsigned int i;
2524
2525 for (i = 0; modes[i]; ++i) {
2526 if (modes[i] == fourcc)
2527 break;
2528 }
2529
2530 if (modes[i] == 0)
2531 return -EINVAL;
2532 }
2533
2534 if (plane == OMAP_DSS_WB) {
2535 switch (fourcc) {
2536 case DRM_FORMAT_NV12:
2537 maxhdownscale = maxvdownscale = 2;
2538 break;
2539 case DRM_FORMAT_YUYV:
2540 case DRM_FORMAT_UYVY:
2541 maxhdownscale = 2;
2542 maxvdownscale = 4;
2543 break;
2544 default:
2545 break;
2546 }
2547 }
2548 if (!mem_to_mem && (pclk == 0 || vm->pixelclock == 0)) {
2549 DSSERR("cannot calculate scaling settings: pclk is zero\n");
2550 return -EINVAL;
2551 }
2552
2553 if ((caps & OMAP_DSS_OVL_CAP_SCALE) == 0)
2554 return -EINVAL;
2555
2556 if (mem_to_mem) {
2557 *x_predecim = *y_predecim = 1;
2558 } else {
2559 *x_predecim = max_decim_limit;
2560 *y_predecim = (rotation_type == OMAP_DSS_ROT_TILER &&
2561 dispc_has_feature(dispc, FEAT_BURST_2D)) ?
2562 2 : max_decim_limit;
2563 }
2564
2565 decim_x = DIV_ROUND_UP(DIV_ROUND_UP(width, out_width), maxhdownscale);
2566 decim_y = DIV_ROUND_UP(DIV_ROUND_UP(height, out_height), maxvdownscale);
2567
2568 if (decim_x > *x_predecim || out_width > width * 8)
2569 return -EINVAL;
2570
2571 if (decim_y > *y_predecim || out_height > height * 8)
2572 return -EINVAL;
2573
2574 ret = dispc->feat->calc_scaling(dispc, pclk, lclk, vm, width, height,
2575 out_width, out_height, fourcc,
2576 five_taps, x_predecim, y_predecim,
2577 &decim_x, &decim_y, pos_x, &core_clk,
2578 mem_to_mem);
2579 if (ret)
2580 return ret;
2581
2582 DSSDBG("%dx%d -> %dx%d (%d.%02d x %d.%02d), decim %dx%d %dx%d (%d.%02d x %d.%02d), taps %d, req clk %lu, cur clk %lu\n",
2583 width, height,
2584 out_width, out_height,
2585 out_width / width, DIV_FRAC(out_width, width),
2586 out_height / height, DIV_FRAC(out_height, height),
2587
2588 decim_x, decim_y,
2589 width / decim_x, height / decim_y,
2590 out_width / (width / decim_x), DIV_FRAC(out_width, width / decim_x),
2591 out_height / (height / decim_y), DIV_FRAC(out_height, height / decim_y),
2592
2593 *five_taps ? 5 : 3,
2594 core_clk, dispc_core_clk_rate(dispc));
2595
2596 if (!core_clk || core_clk > dispc_core_clk_rate(dispc)) {
2597 DSSERR("failed to set up scaling, "
2598 "required core clk rate = %lu Hz, "
2599 "current core clk rate = %lu Hz\n",
2600 core_clk, dispc_core_clk_rate(dispc));
2601 return -EINVAL;
2602 }
2603
2604 *x_predecim = decim_x;
2605 *y_predecim = decim_y;
2606 return 0;
2607}
2608
2609void dispc_ovl_get_max_size(struct dispc_device *dispc, u16 *width, u16 *height)
2610{
2611 *width = dispc->feat->ovl_width_max;
2612 *height = dispc->feat->ovl_height_max;
2613}
2614
2615static int dispc_ovl_setup_common(struct dispc_device *dispc,
2616 enum omap_plane_id plane,
2617 enum omap_overlay_caps caps,
2618 u32 paddr, u32 p_uv_addr,
2619 u16 screen_width, int pos_x, int pos_y,
2620 u16 width, u16 height,
2621 u16 out_width, u16 out_height,
2622 u32 fourcc, u8 rotation, u8 zorder,
2623 u8 pre_mult_alpha, u8 global_alpha,
2624 enum omap_dss_rotation_type rotation_type,
2625 bool replication, const struct videomode *vm,
2626 bool mem_to_mem,
2627 enum drm_color_encoding color_encoding,
2628 enum drm_color_range color_range)
2629{
2630 bool five_taps = true;
2631 bool fieldmode = false;
2632 int r, cconv = 0;
2633 unsigned int offset0, offset1;
2634 s32 row_inc;
2635 s32 pix_inc;
2636 u16 frame_width;
2637 unsigned int field_offset = 0;
2638 u16 in_height = height;
2639 u16 in_width = width;
2640 int x_predecim = 1, y_predecim = 1;
2641 bool ilace = !!(vm->flags & DISPLAY_FLAGS_INTERLACED);
2642 unsigned long pclk = dispc_plane_pclk_rate(dispc, plane);
2643 unsigned long lclk = dispc_plane_lclk_rate(dispc, plane);
2644 const struct drm_format_info *info;
2645
2646 info = drm_format_info(fourcc);
2647
2648 /* when setting up WB, dispc_plane_pclk_rate() returns 0 */
2649 if (plane == OMAP_DSS_WB)
2650 pclk = vm->pixelclock;
2651
2652 if (paddr == 0 && rotation_type != OMAP_DSS_ROT_TILER)
2653 return -EINVAL;
2654
2655 if (info->is_yuv && (in_width & 1)) {
2656 DSSERR("input width %d is not even for YUV format\n", in_width);
2657 return -EINVAL;
2658 }
2659
2660 out_width = out_width == 0 ? width : out_width;
2661 out_height = out_height == 0 ? height : out_height;
2662
2663 if (plane != OMAP_DSS_WB) {
2664 if (ilace && height == out_height)
2665 fieldmode = true;
2666
2667 if (ilace) {
2668 if (fieldmode)
2669 in_height /= 2;
2670 pos_y /= 2;
2671 out_height /= 2;
2672
2673 DSSDBG("adjusting for ilace: height %d, pos_y %d, out_height %d\n",
2674 in_height, pos_y, out_height);
2675 }
2676 }
2677
2678 if (!dispc_ovl_color_mode_supported(dispc, plane, fourcc))
2679 return -EINVAL;
2680
2681 r = dispc_ovl_calc_scaling(dispc, plane, pclk, lclk, caps, vm, in_width,
2682 in_height, out_width, out_height, fourcc,
2683 &five_taps, &x_predecim, &y_predecim, pos_x,
2684 rotation_type, mem_to_mem);
2685 if (r)
2686 return r;
2687
2688 in_width = in_width / x_predecim;
2689 in_height = in_height / y_predecim;
2690
2691 if (x_predecim > 1 || y_predecim > 1)
2692 DSSDBG("predecimation %d x %x, new input size %d x %d\n",
2693 x_predecim, y_predecim, in_width, in_height);
2694
2695 if (info->is_yuv && (in_width & 1)) {
2696 DSSDBG("predecimated input width is not even for YUV format\n");
2697 DSSDBG("adjusting input width %d -> %d\n",
2698 in_width, in_width & ~1);
2699
2700 in_width &= ~1;
2701 }
2702
2703 if (info->is_yuv)
2704 cconv = 1;
2705
2706 if (ilace && !fieldmode) {
2707 /*
2708 * when downscaling the bottom field may have to start several
2709 * source lines below the top field. Unfortunately ACCUI
2710 * registers will only hold the fractional part of the offset
2711 * so the integer part must be added to the base address of the
2712 * bottom field.
2713 */
2714 if (!in_height || in_height == out_height)
2715 field_offset = 0;
2716 else
2717 field_offset = in_height / out_height / 2;
2718 }
2719
2720 /* Fields are independent but interleaved in memory. */
2721 if (fieldmode)
2722 field_offset = 1;
2723
2724 offset0 = 0;
2725 offset1 = 0;
2726 row_inc = 0;
2727 pix_inc = 0;
2728
2729 if (plane == OMAP_DSS_WB)
2730 frame_width = out_width;
2731 else
2732 frame_width = in_width;
2733
2734 calc_offset(screen_width, frame_width,
2735 fourcc, fieldmode, field_offset,
2736 &offset0, &offset1, &row_inc, &pix_inc,
2737 x_predecim, y_predecim,
2738 rotation_type, rotation);
2739
2740 DSSDBG("offset0 %u, offset1 %u, row_inc %d, pix_inc %d\n",
2741 offset0, offset1, row_inc, pix_inc);
2742
2743 dispc_ovl_set_color_mode(dispc, plane, fourcc);
2744
2745 dispc_ovl_configure_burst_type(dispc, plane, rotation_type);
2746
2747 if (dispc->feat->reverse_ilace_field_order)
2748 swap(offset0, offset1);
2749
2750 dispc_ovl_set_ba0(dispc, plane, paddr + offset0);
2751 dispc_ovl_set_ba1(dispc, plane, paddr + offset1);
2752
2753 if (fourcc == DRM_FORMAT_NV12) {
2754 dispc_ovl_set_ba0_uv(dispc, plane, p_uv_addr + offset0);
2755 dispc_ovl_set_ba1_uv(dispc, plane, p_uv_addr + offset1);
2756 }
2757
2758 if (dispc->feat->last_pixel_inc_missing)
2759 row_inc += pix_inc - 1;
2760
2761 dispc_ovl_set_row_inc(dispc, plane, row_inc);
2762 dispc_ovl_set_pix_inc(dispc, plane, pix_inc);
2763
2764 DSSDBG("%d,%d %dx%d -> %dx%d\n", pos_x, pos_y, in_width,
2765 in_height, out_width, out_height);
2766
2767 dispc_ovl_set_pos(dispc, plane, caps, pos_x, pos_y);
2768
2769 dispc_ovl_set_input_size(dispc, plane, in_width, in_height);
2770
2771 if (caps & OMAP_DSS_OVL_CAP_SCALE) {
2772 dispc_ovl_set_scaling(dispc, plane, in_width, in_height,
2773 out_width, out_height, ilace, five_taps,
2774 fieldmode, fourcc, rotation);
2775 dispc_ovl_set_output_size(dispc, plane, out_width, out_height);
2776 dispc_ovl_set_vid_color_conv(dispc, plane, cconv);
2777
2778 if (plane != OMAP_DSS_WB)
2779 dispc_ovl_set_csc(dispc, plane, color_encoding, color_range);
2780 }
2781
2782 dispc_ovl_set_rotation_attrs(dispc, plane, rotation, rotation_type,
2783 fourcc);
2784
2785 dispc_ovl_set_zorder(dispc, plane, caps, zorder);
2786 dispc_ovl_set_pre_mult_alpha(dispc, plane, caps, pre_mult_alpha);
2787 dispc_ovl_setup_global_alpha(dispc, plane, caps, global_alpha);
2788
2789 dispc_ovl_enable_replication(dispc, plane, caps, replication);
2790
2791 return 0;
2792}
2793
2794int dispc_ovl_setup(struct dispc_device *dispc,
2795 enum omap_plane_id plane,
2796 const struct omap_overlay_info *oi,
2797 const struct videomode *vm, bool mem_to_mem,
2798 enum omap_channel channel)
2799{
2800 int r;
2801 enum omap_overlay_caps caps = dispc->feat->overlay_caps[plane];
2802 const bool replication = true;
2803
2804 DSSDBG("dispc_ovl_setup %d, pa %pad, pa_uv %pad, sw %d, %d,%d, %dx%d ->"
2805 " %dx%d, cmode %x, rot %d, chan %d repl %d\n",
2806 plane, &oi->paddr, &oi->p_uv_addr, oi->screen_width, oi->pos_x,
2807 oi->pos_y, oi->width, oi->height, oi->out_width, oi->out_height,
2808 oi->fourcc, oi->rotation, channel, replication);
2809
2810 dispc_ovl_set_channel_out(dispc, plane, channel);
2811
2812 r = dispc_ovl_setup_common(dispc, plane, caps, oi->paddr, oi->p_uv_addr,
2813 oi->screen_width, oi->pos_x, oi->pos_y, oi->width, oi->height,
2814 oi->out_width, oi->out_height, oi->fourcc, oi->rotation,
2815 oi->zorder, oi->pre_mult_alpha, oi->global_alpha,
2816 oi->rotation_type, replication, vm, mem_to_mem,
2817 oi->color_encoding, oi->color_range);
2818
2819 return r;
2820}
2821
2822int dispc_wb_setup(struct dispc_device *dispc,
2823 const struct omap_dss_writeback_info *wi,
2824 bool mem_to_mem, const struct videomode *vm,
2825 enum dss_writeback_channel channel_in)
2826{
2827 int r;
2828 u32 l;
2829 enum omap_plane_id plane = OMAP_DSS_WB;
2830 const int pos_x = 0, pos_y = 0;
2831 const u8 zorder = 0, global_alpha = 0;
2832 const bool replication = true;
2833 bool truncation;
2834 int in_width = vm->hactive;
2835 int in_height = vm->vactive;
2836 enum omap_overlay_caps caps =
2837 OMAP_DSS_OVL_CAP_SCALE | OMAP_DSS_OVL_CAP_PRE_MULT_ALPHA;
2838
2839 if (vm->flags & DISPLAY_FLAGS_INTERLACED)
2840 in_height /= 2;
2841
2842 DSSDBG("dispc_wb_setup, pa %x, pa_uv %x, %d,%d -> %dx%d, cmode %x, "
2843 "rot %d\n", wi->paddr, wi->p_uv_addr, in_width,
2844 in_height, wi->width, wi->height, wi->fourcc, wi->rotation);
2845
2846 r = dispc_ovl_setup_common(dispc, plane, caps, wi->paddr, wi->p_uv_addr,
2847 wi->buf_width, pos_x, pos_y, in_width, in_height, wi->width,
2848 wi->height, wi->fourcc, wi->rotation, zorder,
2849 wi->pre_mult_alpha, global_alpha, wi->rotation_type,
2850 replication, vm, mem_to_mem, DRM_COLOR_YCBCR_BT601,
2851 DRM_COLOR_YCBCR_LIMITED_RANGE);
2852 if (r)
2853 return r;
2854
2855 switch (wi->fourcc) {
2856 case DRM_FORMAT_RGB565:
2857 case DRM_FORMAT_RGB888:
2858 case DRM_FORMAT_ARGB4444:
2859 case DRM_FORMAT_RGBA4444:
2860 case DRM_FORMAT_RGBX4444:
2861 case DRM_FORMAT_ARGB1555:
2862 case DRM_FORMAT_XRGB1555:
2863 case DRM_FORMAT_XRGB4444:
2864 truncation = true;
2865 break;
2866 default:
2867 truncation = false;
2868 break;
2869 }
2870
2871 /* setup extra DISPC_WB_ATTRIBUTES */
2872 l = dispc_read_reg(dispc, DISPC_OVL_ATTRIBUTES(plane));
2873 l = FLD_MOD(l, truncation, 10, 10); /* TRUNCATIONENABLE */
2874 l = FLD_MOD(l, channel_in, 18, 16); /* CHANNELIN */
2875 l = FLD_MOD(l, mem_to_mem, 19, 19); /* WRITEBACKMODE */
2876 if (mem_to_mem)
2877 l = FLD_MOD(l, 1, 26, 24); /* CAPTUREMODE */
2878 else
2879 l = FLD_MOD(l, 0, 26, 24); /* CAPTUREMODE */
2880 dispc_write_reg(dispc, DISPC_OVL_ATTRIBUTES(plane), l);
2881
2882 if (mem_to_mem) {
2883 /* WBDELAYCOUNT */
2884 REG_FLD_MOD(dispc, DISPC_OVL_ATTRIBUTES2(plane), 0, 7, 0);
2885 } else {
2886 u32 wbdelay;
2887
2888 if (channel_in == DSS_WB_TV_MGR)
2889 wbdelay = vm->vsync_len + vm->vback_porch;
2890 else
2891 wbdelay = vm->vfront_porch + vm->vsync_len +
2892 vm->vback_porch;
2893
2894 if (vm->flags & DISPLAY_FLAGS_INTERLACED)
2895 wbdelay /= 2;
2896
2897 wbdelay = min(wbdelay, 255u);
2898
2899 /* WBDELAYCOUNT */
2900 REG_FLD_MOD(dispc, DISPC_OVL_ATTRIBUTES2(plane), wbdelay, 7, 0);
2901 }
2902
2903 return 0;
2904}
2905
2906bool dispc_has_writeback(struct dispc_device *dispc)
2907{
2908 return dispc->feat->has_writeback;
2909}
2910
2911int dispc_ovl_enable(struct dispc_device *dispc,
2912 enum omap_plane_id plane, bool enable)
2913{
2914 DSSDBG("dispc_enable_plane %d, %d\n", plane, enable);
2915
2916 REG_FLD_MOD(dispc, DISPC_OVL_ATTRIBUTES(plane), enable ? 1 : 0, 0, 0);
2917
2918 return 0;
2919}
2920
2921static void dispc_lcd_enable_signal_polarity(struct dispc_device *dispc,
2922 bool act_high)
2923{
2924 if (!dispc_has_feature(dispc, FEAT_LCDENABLEPOL))
2925 return;
2926
2927 REG_FLD_MOD(dispc, DISPC_CONTROL, act_high ? 1 : 0, 29, 29);
2928}
2929
2930void dispc_lcd_enable_signal(struct dispc_device *dispc, bool enable)
2931{
2932 if (!dispc_has_feature(dispc, FEAT_LCDENABLESIGNAL))
2933 return;
2934
2935 REG_FLD_MOD(dispc, DISPC_CONTROL, enable ? 1 : 0, 28, 28);
2936}
2937
2938void dispc_pck_free_enable(struct dispc_device *dispc, bool enable)
2939{
2940 if (!dispc_has_feature(dispc, FEAT_PCKFREEENABLE))
2941 return;
2942
2943 REG_FLD_MOD(dispc, DISPC_CONTROL, enable ? 1 : 0, 27, 27);
2944}
2945
2946static void dispc_mgr_enable_fifohandcheck(struct dispc_device *dispc,
2947 enum omap_channel channel,
2948 bool enable)
2949{
2950 mgr_fld_write(dispc, channel, DISPC_MGR_FLD_FIFOHANDCHECK, enable);
2951}
2952
2953
2954static void dispc_mgr_set_lcd_type_tft(struct dispc_device *dispc,
2955 enum omap_channel channel)
2956{
2957 mgr_fld_write(dispc, channel, DISPC_MGR_FLD_STNTFT, 1);
2958}
2959
2960static void dispc_set_loadmode(struct dispc_device *dispc,
2961 enum omap_dss_load_mode mode)
2962{
2963 REG_FLD_MOD(dispc, DISPC_CONFIG, mode, 2, 1);
2964}
2965
2966
2967static void dispc_mgr_set_default_color(struct dispc_device *dispc,
2968 enum omap_channel channel, u32 color)
2969{
2970 dispc_write_reg(dispc, DISPC_DEFAULT_COLOR(channel), color);
2971}
2972
2973static void dispc_mgr_set_trans_key(struct dispc_device *dispc,
2974 enum omap_channel ch,
2975 enum omap_dss_trans_key_type type,
2976 u32 trans_key)
2977{
2978 mgr_fld_write(dispc, ch, DISPC_MGR_FLD_TCKSELECTION, type);
2979
2980 dispc_write_reg(dispc, DISPC_TRANS_COLOR(ch), trans_key);
2981}
2982
2983static void dispc_mgr_enable_trans_key(struct dispc_device *dispc,
2984 enum omap_channel ch, bool enable)
2985{
2986 mgr_fld_write(dispc, ch, DISPC_MGR_FLD_TCKENABLE, enable);
2987}
2988
2989static void dispc_mgr_enable_alpha_fixed_zorder(struct dispc_device *dispc,
2990 enum omap_channel ch,
2991 bool enable)
2992{
2993 if (!dispc_has_feature(dispc, FEAT_ALPHA_FIXED_ZORDER))
2994 return;
2995
2996 if (ch == OMAP_DSS_CHANNEL_LCD)
2997 REG_FLD_MOD(dispc, DISPC_CONFIG, enable, 18, 18);
2998 else if (ch == OMAP_DSS_CHANNEL_DIGIT)
2999 REG_FLD_MOD(dispc, DISPC_CONFIG, enable, 19, 19);
3000}
3001
3002void dispc_mgr_setup(struct dispc_device *dispc,
3003 enum omap_channel channel,
3004 const struct omap_overlay_manager_info *info)
3005{
3006 dispc_mgr_set_default_color(dispc, channel, info->default_color);
3007 dispc_mgr_set_trans_key(dispc, channel, info->trans_key_type,
3008 info->trans_key);
3009 dispc_mgr_enable_trans_key(dispc, channel, info->trans_enabled);
3010 dispc_mgr_enable_alpha_fixed_zorder(dispc, channel,
3011 info->partial_alpha_enabled);
3012 if (dispc_has_feature(dispc, FEAT_CPR)) {
3013 dispc_mgr_enable_cpr(dispc, channel, info->cpr_enable);
3014 dispc_mgr_set_cpr_coef(dispc, channel, &info->cpr_coefs);
3015 }
3016}
3017
3018static void dispc_mgr_set_tft_data_lines(struct dispc_device *dispc,
3019 enum omap_channel channel,
3020 u8 data_lines)
3021{
3022 int code;
3023
3024 switch (data_lines) {
3025 case 12:
3026 code = 0;
3027 break;
3028 case 16:
3029 code = 1;
3030 break;
3031 case 18:
3032 code = 2;
3033 break;
3034 case 24:
3035 code = 3;
3036 break;
3037 default:
3038 BUG();
3039 return;
3040 }
3041
3042 mgr_fld_write(dispc, channel, DISPC_MGR_FLD_TFTDATALINES, code);
3043}
3044
3045static void dispc_mgr_set_io_pad_mode(struct dispc_device *dispc,
3046 enum dss_io_pad_mode mode)
3047{
3048 u32 l;
3049 int gpout0, gpout1;
3050
3051 switch (mode) {
3052 case DSS_IO_PAD_MODE_RESET:
3053 gpout0 = 0;
3054 gpout1 = 0;
3055 break;
3056 case DSS_IO_PAD_MODE_RFBI:
3057 gpout0 = 1;
3058 gpout1 = 0;
3059 break;
3060 case DSS_IO_PAD_MODE_BYPASS:
3061 gpout0 = 1;
3062 gpout1 = 1;
3063 break;
3064 default:
3065 BUG();
3066 return;
3067 }
3068
3069 l = dispc_read_reg(dispc, DISPC_CONTROL);
3070 l = FLD_MOD(l, gpout0, 15, 15);
3071 l = FLD_MOD(l, gpout1, 16, 16);
3072 dispc_write_reg(dispc, DISPC_CONTROL, l);
3073}
3074
3075static void dispc_mgr_enable_stallmode(struct dispc_device *dispc,
3076 enum omap_channel channel, bool enable)
3077{
3078 mgr_fld_write(dispc, channel, DISPC_MGR_FLD_STALLMODE, enable);
3079}
3080
3081void dispc_mgr_set_lcd_config(struct dispc_device *dispc,
3082 enum omap_channel channel,
3083 const struct dss_lcd_mgr_config *config)
3084{
3085 dispc_mgr_set_io_pad_mode(dispc, config->io_pad_mode);
3086
3087 dispc_mgr_enable_stallmode(dispc, channel, config->stallmode);
3088 dispc_mgr_enable_fifohandcheck(dispc, channel, config->fifohandcheck);
3089
3090 dispc_mgr_set_clock_div(dispc, channel, &config->clock_info);
3091
3092 dispc_mgr_set_tft_data_lines(dispc, channel, config->video_port_width);
3093
3094 dispc_lcd_enable_signal_polarity(dispc, config->lcden_sig_polarity);
3095
3096 dispc_mgr_set_lcd_type_tft(dispc, channel);
3097}
3098
3099static bool _dispc_mgr_size_ok(struct dispc_device *dispc,
3100 u16 width, u16 height)
3101{
3102 return width <= dispc->feat->mgr_width_max &&
3103 height <= dispc->feat->mgr_height_max;
3104}
3105
3106static bool _dispc_lcd_timings_ok(struct dispc_device *dispc,
3107 int hsync_len, int hfp, int hbp,
3108 int vsw, int vfp, int vbp)
3109{
3110 if (hsync_len < 1 || hsync_len > dispc->feat->sw_max ||
3111 hfp < 1 || hfp > dispc->feat->hp_max ||
3112 hbp < 1 || hbp > dispc->feat->hp_max ||
3113 vsw < 1 || vsw > dispc->feat->sw_max ||
3114 vfp < 0 || vfp > dispc->feat->vp_max ||
3115 vbp < 0 || vbp > dispc->feat->vp_max)
3116 return false;
3117 return true;
3118}
3119
3120static bool _dispc_mgr_pclk_ok(struct dispc_device *dispc,
3121 enum omap_channel channel,
3122 unsigned long pclk)
3123{
3124 if (dss_mgr_is_lcd(channel))
3125 return pclk <= dispc->feat->max_lcd_pclk;
3126 else
3127 return pclk <= dispc->feat->max_tv_pclk;
3128}
3129
3130int dispc_mgr_check_timings(struct dispc_device *dispc,
3131 enum omap_channel channel,
3132 const struct videomode *vm)
3133{
3134 if (!_dispc_mgr_size_ok(dispc, vm->hactive, vm->vactive))
3135 return MODE_BAD;
3136
3137 if (!_dispc_mgr_pclk_ok(dispc, channel, vm->pixelclock))
3138 return MODE_BAD;
3139
3140 if (dss_mgr_is_lcd(channel)) {
3141 /* TODO: OMAP4+ supports interlace for LCD outputs */
3142 if (vm->flags & DISPLAY_FLAGS_INTERLACED)
3143 return MODE_BAD;
3144
3145 if (!_dispc_lcd_timings_ok(dispc, vm->hsync_len,
3146 vm->hfront_porch, vm->hback_porch,
3147 vm->vsync_len, vm->vfront_porch,
3148 vm->vback_porch))
3149 return MODE_BAD;
3150 }
3151
3152 return MODE_OK;
3153}
3154
3155static void _dispc_mgr_set_lcd_timings(struct dispc_device *dispc,
3156 enum omap_channel channel,
3157 const struct videomode *vm)
3158{
3159 u32 timing_h, timing_v, l;
3160 bool onoff, rf, ipc, vs, hs, de;
3161
3162 timing_h = FLD_VAL(vm->hsync_len - 1, dispc->feat->sw_start, 0) |
3163 FLD_VAL(vm->hfront_porch - 1, dispc->feat->fp_start, 8) |
3164 FLD_VAL(vm->hback_porch - 1, dispc->feat->bp_start, 20);
3165 timing_v = FLD_VAL(vm->vsync_len - 1, dispc->feat->sw_start, 0) |
3166 FLD_VAL(vm->vfront_porch, dispc->feat->fp_start, 8) |
3167 FLD_VAL(vm->vback_porch, dispc->feat->bp_start, 20);
3168
3169 dispc_write_reg(dispc, DISPC_TIMING_H(channel), timing_h);
3170 dispc_write_reg(dispc, DISPC_TIMING_V(channel), timing_v);
3171
3172 vs = !!(vm->flags & DISPLAY_FLAGS_VSYNC_LOW);
3173 hs = !!(vm->flags & DISPLAY_FLAGS_HSYNC_LOW);
3174 de = !!(vm->flags & DISPLAY_FLAGS_DE_LOW);
3175 ipc = !!(vm->flags & DISPLAY_FLAGS_PIXDATA_NEGEDGE);
3176 onoff = true; /* always use the 'rf' setting */
3177 rf = !!(vm->flags & DISPLAY_FLAGS_SYNC_POSEDGE);
3178
3179 l = FLD_VAL(onoff, 17, 17) |
3180 FLD_VAL(rf, 16, 16) |
3181 FLD_VAL(de, 15, 15) |
3182 FLD_VAL(ipc, 14, 14) |
3183 FLD_VAL(hs, 13, 13) |
3184 FLD_VAL(vs, 12, 12);
3185
3186 /* always set ALIGN bit when available */
3187 if (dispc->feat->supports_sync_align)
3188 l |= (1 << 18);
3189
3190 dispc_write_reg(dispc, DISPC_POL_FREQ(channel), l);
3191
3192 if (dispc->syscon_pol) {
3193 const int shifts[] = {
3194 [OMAP_DSS_CHANNEL_LCD] = 0,
3195 [OMAP_DSS_CHANNEL_LCD2] = 1,
3196 [OMAP_DSS_CHANNEL_LCD3] = 2,
3197 };
3198
3199 u32 mask, val;
3200
3201 mask = (1 << 0) | (1 << 3) | (1 << 6);
3202 val = (rf << 0) | (ipc << 3) | (onoff << 6);
3203
3204 mask <<= 16 + shifts[channel];
3205 val <<= 16 + shifts[channel];
3206
3207 regmap_update_bits(dispc->syscon_pol, dispc->syscon_pol_offset,
3208 mask, val);
3209 }
3210}
3211
3212static int vm_flag_to_int(enum display_flags flags, enum display_flags high,
3213 enum display_flags low)
3214{
3215 if (flags & high)
3216 return 1;
3217 if (flags & low)
3218 return -1;
3219 return 0;
3220}
3221
3222/* change name to mode? */
3223void dispc_mgr_set_timings(struct dispc_device *dispc,
3224 enum omap_channel channel,
3225 const struct videomode *vm)
3226{
3227 unsigned int xtot, ytot;
3228 unsigned long ht, vt;
3229 struct videomode t = *vm;
3230
3231 DSSDBG("channel %d xres %u yres %u\n", channel, t.hactive, t.vactive);
3232
3233 if (dispc_mgr_check_timings(dispc, channel, &t)) {
3234 BUG();
3235 return;
3236 }
3237
3238 if (dss_mgr_is_lcd(channel)) {
3239 _dispc_mgr_set_lcd_timings(dispc, channel, &t);
3240
3241 xtot = t.hactive + t.hfront_porch + t.hsync_len + t.hback_porch;
3242 ytot = t.vactive + t.vfront_porch + t.vsync_len + t.vback_porch;
3243
3244 ht = vm->pixelclock / xtot;
3245 vt = vm->pixelclock / xtot / ytot;
3246
3247 DSSDBG("pck %lu\n", vm->pixelclock);
3248 DSSDBG("hsync_len %d hfp %d hbp %d vsw %d vfp %d vbp %d\n",
3249 t.hsync_len, t.hfront_porch, t.hback_porch,
3250 t.vsync_len, t.vfront_porch, t.vback_porch);
3251 DSSDBG("vsync_level %d hsync_level %d data_pclk_edge %d de_level %d sync_pclk_edge %d\n",
3252 vm_flag_to_int(t.flags, DISPLAY_FLAGS_VSYNC_HIGH, DISPLAY_FLAGS_VSYNC_LOW),
3253 vm_flag_to_int(t.flags, DISPLAY_FLAGS_HSYNC_HIGH, DISPLAY_FLAGS_HSYNC_LOW),
3254 vm_flag_to_int(t.flags, DISPLAY_FLAGS_PIXDATA_POSEDGE, DISPLAY_FLAGS_PIXDATA_NEGEDGE),
3255 vm_flag_to_int(t.flags, DISPLAY_FLAGS_DE_HIGH, DISPLAY_FLAGS_DE_LOW),
3256 vm_flag_to_int(t.flags, DISPLAY_FLAGS_SYNC_POSEDGE, DISPLAY_FLAGS_SYNC_NEGEDGE));
3257
3258 DSSDBG("hsync %luHz, vsync %luHz\n", ht, vt);
3259 } else {
3260 if (t.flags & DISPLAY_FLAGS_INTERLACED)
3261 t.vactive /= 2;
3262
3263 if (dispc->feat->supports_double_pixel)
3264 REG_FLD_MOD(dispc, DISPC_CONTROL,
3265 !!(t.flags & DISPLAY_FLAGS_DOUBLECLK),
3266 19, 17);
3267 }
3268
3269 dispc_mgr_set_size(dispc, channel, t.hactive, t.vactive);
3270}
3271
3272static void dispc_mgr_set_lcd_divisor(struct dispc_device *dispc,
3273 enum omap_channel channel, u16 lck_div,
3274 u16 pck_div)
3275{
3276 BUG_ON(lck_div < 1);
3277 BUG_ON(pck_div < 1);
3278
3279 dispc_write_reg(dispc, DISPC_DIVISORo(channel),
3280 FLD_VAL(lck_div, 23, 16) | FLD_VAL(pck_div, 7, 0));
3281
3282 if (!dispc_has_feature(dispc, FEAT_CORE_CLK_DIV) &&
3283 channel == OMAP_DSS_CHANNEL_LCD)
3284 dispc->core_clk_rate = dispc_fclk_rate(dispc) / lck_div;
3285}
3286
3287static void dispc_mgr_get_lcd_divisor(struct dispc_device *dispc,
3288 enum omap_channel channel, int *lck_div,
3289 int *pck_div)
3290{
3291 u32 l;
3292 l = dispc_read_reg(dispc, DISPC_DIVISORo(channel));
3293 *lck_div = FLD_GET(l, 23, 16);
3294 *pck_div = FLD_GET(l, 7, 0);
3295}
3296
3297static unsigned long dispc_fclk_rate(struct dispc_device *dispc)
3298{
3299 unsigned long r;
3300 enum dss_clk_source src;
3301
3302 src = dss_get_dispc_clk_source(dispc->dss);
3303
3304 if (src == DSS_CLK_SRC_FCK) {
3305 r = dss_get_dispc_clk_rate(dispc->dss);
3306 } else {
3307 struct dss_pll *pll;
3308 unsigned int clkout_idx;
3309
3310 pll = dss_pll_find_by_src(dispc->dss, src);
3311 clkout_idx = dss_pll_get_clkout_idx_for_src(src);
3312
3313 r = pll->cinfo.clkout[clkout_idx];
3314 }
3315
3316 return r;
3317}
3318
3319static unsigned long dispc_mgr_lclk_rate(struct dispc_device *dispc,
3320 enum omap_channel channel)
3321{
3322 int lcd;
3323 unsigned long r;
3324 enum dss_clk_source src;
3325
3326 /* for TV, LCLK rate is the FCLK rate */
3327 if (!dss_mgr_is_lcd(channel))
3328 return dispc_fclk_rate(dispc);
3329
3330 src = dss_get_lcd_clk_source(dispc->dss, channel);
3331
3332 if (src == DSS_CLK_SRC_FCK) {
3333 r = dss_get_dispc_clk_rate(dispc->dss);
3334 } else {
3335 struct dss_pll *pll;
3336 unsigned int clkout_idx;
3337
3338 pll = dss_pll_find_by_src(dispc->dss, src);
3339 clkout_idx = dss_pll_get_clkout_idx_for_src(src);
3340
3341 r = pll->cinfo.clkout[clkout_idx];
3342 }
3343
3344 lcd = REG_GET(dispc, DISPC_DIVISORo(channel), 23, 16);
3345
3346 return r / lcd;
3347}
3348
3349static unsigned long dispc_mgr_pclk_rate(struct dispc_device *dispc,
3350 enum omap_channel channel)
3351{
3352 unsigned long r;
3353
3354 if (dss_mgr_is_lcd(channel)) {
3355 int pcd;
3356 u32 l;
3357
3358 l = dispc_read_reg(dispc, DISPC_DIVISORo(channel));
3359
3360 pcd = FLD_GET(l, 7, 0);
3361
3362 r = dispc_mgr_lclk_rate(dispc, channel);
3363
3364 return r / pcd;
3365 } else {
3366 return dispc->tv_pclk_rate;
3367 }
3368}
3369
3370void dispc_set_tv_pclk(struct dispc_device *dispc, unsigned long pclk)
3371{
3372 dispc->tv_pclk_rate = pclk;
3373}
3374
3375static unsigned long dispc_core_clk_rate(struct dispc_device *dispc)
3376{
3377 return dispc->core_clk_rate;
3378}
3379
3380static unsigned long dispc_plane_pclk_rate(struct dispc_device *dispc,
3381 enum omap_plane_id plane)
3382{
3383 enum omap_channel channel;
3384
3385 if (plane == OMAP_DSS_WB)
3386 return 0;
3387
3388 channel = dispc_ovl_get_channel_out(dispc, plane);
3389
3390 return dispc_mgr_pclk_rate(dispc, channel);
3391}
3392
3393static unsigned long dispc_plane_lclk_rate(struct dispc_device *dispc,
3394 enum omap_plane_id plane)
3395{
3396 enum omap_channel channel;
3397
3398 if (plane == OMAP_DSS_WB)
3399 return 0;
3400
3401 channel = dispc_ovl_get_channel_out(dispc, plane);
3402
3403 return dispc_mgr_lclk_rate(dispc, channel);
3404}
3405
3406static void dispc_dump_clocks_channel(struct dispc_device *dispc,
3407 struct seq_file *s,
3408 enum omap_channel channel)
3409{
3410 int lcd, pcd;
3411 enum dss_clk_source lcd_clk_src;
3412
3413 seq_printf(s, "- %s -\n", mgr_desc[channel].name);
3414
3415 lcd_clk_src = dss_get_lcd_clk_source(dispc->dss, channel);
3416
3417 seq_printf(s, "%s clk source = %s\n", mgr_desc[channel].name,
3418 dss_get_clk_source_name(lcd_clk_src));
3419
3420 dispc_mgr_get_lcd_divisor(dispc, channel, &lcd, &pcd);
3421
3422 seq_printf(s, "lck\t\t%-16lulck div\t%u\n",
3423 dispc_mgr_lclk_rate(dispc, channel), lcd);
3424 seq_printf(s, "pck\t\t%-16lupck div\t%u\n",
3425 dispc_mgr_pclk_rate(dispc, channel), pcd);
3426}
3427
3428void dispc_dump_clocks(struct dispc_device *dispc, struct seq_file *s)
3429{
3430 enum dss_clk_source dispc_clk_src;
3431 int lcd;
3432 u32 l;
3433
3434 if (dispc_runtime_get(dispc))
3435 return;
3436
3437 seq_printf(s, "- DISPC -\n");
3438
3439 dispc_clk_src = dss_get_dispc_clk_source(dispc->dss);
3440 seq_printf(s, "dispc fclk source = %s\n",
3441 dss_get_clk_source_name(dispc_clk_src));
3442
3443 seq_printf(s, "fck\t\t%-16lu\n", dispc_fclk_rate(dispc));
3444
3445 if (dispc_has_feature(dispc, FEAT_CORE_CLK_DIV)) {
3446 seq_printf(s, "- DISPC-CORE-CLK -\n");
3447 l = dispc_read_reg(dispc, DISPC_DIVISOR);
3448 lcd = FLD_GET(l, 23, 16);
3449
3450 seq_printf(s, "lck\t\t%-16lulck div\t%u\n",
3451 (dispc_fclk_rate(dispc)/lcd), lcd);
3452 }
3453
3454 dispc_dump_clocks_channel(dispc, s, OMAP_DSS_CHANNEL_LCD);
3455
3456 if (dispc_has_feature(dispc, FEAT_MGR_LCD2))
3457 dispc_dump_clocks_channel(dispc, s, OMAP_DSS_CHANNEL_LCD2);
3458 if (dispc_has_feature(dispc, FEAT_MGR_LCD3))
3459 dispc_dump_clocks_channel(dispc, s, OMAP_DSS_CHANNEL_LCD3);
3460
3461 dispc_runtime_put(dispc);
3462}
3463
3464static int dispc_dump_regs(struct seq_file *s, void *p)
3465{
3466 struct dispc_device *dispc = s->private;
3467 int i, j;
3468 const char *mgr_names[] = {
3469 [OMAP_DSS_CHANNEL_LCD] = "LCD",
3470 [OMAP_DSS_CHANNEL_DIGIT] = "TV",
3471 [OMAP_DSS_CHANNEL_LCD2] = "LCD2",
3472 [OMAP_DSS_CHANNEL_LCD3] = "LCD3",
3473 };
3474 const char *ovl_names[] = {
3475 [OMAP_DSS_GFX] = "GFX",
3476 [OMAP_DSS_VIDEO1] = "VID1",
3477 [OMAP_DSS_VIDEO2] = "VID2",
3478 [OMAP_DSS_VIDEO3] = "VID3",
3479 [OMAP_DSS_WB] = "WB",
3480 };
3481 const char **p_names;
3482
3483#define DUMPREG(dispc, r) \
3484 seq_printf(s, "%-50s %08x\n", #r, dispc_read_reg(dispc, r))
3485
3486 if (dispc_runtime_get(dispc))
3487 return 0;
3488
3489 /* DISPC common registers */
3490 DUMPREG(dispc, DISPC_REVISION);
3491 DUMPREG(dispc, DISPC_SYSCONFIG);
3492 DUMPREG(dispc, DISPC_SYSSTATUS);
3493 DUMPREG(dispc, DISPC_IRQSTATUS);
3494 DUMPREG(dispc, DISPC_IRQENABLE);
3495 DUMPREG(dispc, DISPC_CONTROL);
3496 DUMPREG(dispc, DISPC_CONFIG);
3497 DUMPREG(dispc, DISPC_CAPABLE);
3498 DUMPREG(dispc, DISPC_LINE_STATUS);
3499 DUMPREG(dispc, DISPC_LINE_NUMBER);
3500 if (dispc_has_feature(dispc, FEAT_ALPHA_FIXED_ZORDER) ||
3501 dispc_has_feature(dispc, FEAT_ALPHA_FREE_ZORDER))
3502 DUMPREG(dispc, DISPC_GLOBAL_ALPHA);
3503 if (dispc_has_feature(dispc, FEAT_MGR_LCD2)) {
3504 DUMPREG(dispc, DISPC_CONTROL2);
3505 DUMPREG(dispc, DISPC_CONFIG2);
3506 }
3507 if (dispc_has_feature(dispc, FEAT_MGR_LCD3)) {
3508 DUMPREG(dispc, DISPC_CONTROL3);
3509 DUMPREG(dispc, DISPC_CONFIG3);
3510 }
3511 if (dispc_has_feature(dispc, FEAT_MFLAG))
3512 DUMPREG(dispc, DISPC_GLOBAL_MFLAG_ATTRIBUTE);
3513
3514#undef DUMPREG
3515
3516#define DISPC_REG(i, name) name(i)
3517#define DUMPREG(dispc, i, r) seq_printf(s, "%s(%s)%*s %08x\n", #r, p_names[i], \
3518 (int)(48 - strlen(#r) - strlen(p_names[i])), " ", \
3519 dispc_read_reg(dispc, DISPC_REG(i, r)))
3520
3521 p_names = mgr_names;
3522
3523 /* DISPC channel specific registers */
3524 for (i = 0; i < dispc_get_num_mgrs(dispc); i++) {
3525 DUMPREG(dispc, i, DISPC_DEFAULT_COLOR);
3526 DUMPREG(dispc, i, DISPC_TRANS_COLOR);
3527 DUMPREG(dispc, i, DISPC_SIZE_MGR);
3528
3529 if (i == OMAP_DSS_CHANNEL_DIGIT)
3530 continue;
3531
3532 DUMPREG(dispc, i, DISPC_TIMING_H);
3533 DUMPREG(dispc, i, DISPC_TIMING_V);
3534 DUMPREG(dispc, i, DISPC_POL_FREQ);
3535 DUMPREG(dispc, i, DISPC_DIVISORo);
3536
3537 DUMPREG(dispc, i, DISPC_DATA_CYCLE1);
3538 DUMPREG(dispc, i, DISPC_DATA_CYCLE2);
3539 DUMPREG(dispc, i, DISPC_DATA_CYCLE3);
3540
3541 if (dispc_has_feature(dispc, FEAT_CPR)) {
3542 DUMPREG(dispc, i, DISPC_CPR_COEF_R);
3543 DUMPREG(dispc, i, DISPC_CPR_COEF_G);
3544 DUMPREG(dispc, i, DISPC_CPR_COEF_B);
3545 }
3546 }
3547
3548 p_names = ovl_names;
3549
3550 for (i = 0; i < dispc_get_num_ovls(dispc); i++) {
3551 DUMPREG(dispc, i, DISPC_OVL_BA0);
3552 DUMPREG(dispc, i, DISPC_OVL_BA1);
3553 DUMPREG(dispc, i, DISPC_OVL_POSITION);
3554 DUMPREG(dispc, i, DISPC_OVL_SIZE);
3555 DUMPREG(dispc, i, DISPC_OVL_ATTRIBUTES);
3556 DUMPREG(dispc, i, DISPC_OVL_FIFO_THRESHOLD);
3557 DUMPREG(dispc, i, DISPC_OVL_FIFO_SIZE_STATUS);
3558 DUMPREG(dispc, i, DISPC_OVL_ROW_INC);
3559 DUMPREG(dispc, i, DISPC_OVL_PIXEL_INC);
3560
3561 if (dispc_has_feature(dispc, FEAT_PRELOAD))
3562 DUMPREG(dispc, i, DISPC_OVL_PRELOAD);
3563 if (dispc_has_feature(dispc, FEAT_MFLAG))
3564 DUMPREG(dispc, i, DISPC_OVL_MFLAG_THRESHOLD);
3565
3566 if (i == OMAP_DSS_GFX) {
3567 DUMPREG(dispc, i, DISPC_OVL_WINDOW_SKIP);
3568 DUMPREG(dispc, i, DISPC_OVL_TABLE_BA);
3569 continue;
3570 }
3571
3572 DUMPREG(dispc, i, DISPC_OVL_FIR);
3573 DUMPREG(dispc, i, DISPC_OVL_PICTURE_SIZE);
3574 DUMPREG(dispc, i, DISPC_OVL_ACCU0);
3575 DUMPREG(dispc, i, DISPC_OVL_ACCU1);
3576 if (dispc_has_feature(dispc, FEAT_HANDLE_UV_SEPARATE)) {
3577 DUMPREG(dispc, i, DISPC_OVL_BA0_UV);
3578 DUMPREG(dispc, i, DISPC_OVL_BA1_UV);
3579 DUMPREG(dispc, i, DISPC_OVL_FIR2);
3580 DUMPREG(dispc, i, DISPC_OVL_ACCU2_0);
3581 DUMPREG(dispc, i, DISPC_OVL_ACCU2_1);
3582 }
3583 if (dispc_has_feature(dispc, FEAT_ATTR2))
3584 DUMPREG(dispc, i, DISPC_OVL_ATTRIBUTES2);
3585 }
3586
3587 if (dispc->feat->has_writeback) {
3588 i = OMAP_DSS_WB;
3589 DUMPREG(dispc, i, DISPC_OVL_BA0);
3590 DUMPREG(dispc, i, DISPC_OVL_BA1);
3591 DUMPREG(dispc, i, DISPC_OVL_SIZE);
3592 DUMPREG(dispc, i, DISPC_OVL_ATTRIBUTES);
3593 DUMPREG(dispc, i, DISPC_OVL_FIFO_THRESHOLD);
3594 DUMPREG(dispc, i, DISPC_OVL_FIFO_SIZE_STATUS);
3595 DUMPREG(dispc, i, DISPC_OVL_ROW_INC);
3596 DUMPREG(dispc, i, DISPC_OVL_PIXEL_INC);
3597
3598 if (dispc_has_feature(dispc, FEAT_MFLAG))
3599 DUMPREG(dispc, i, DISPC_OVL_MFLAG_THRESHOLD);
3600
3601 DUMPREG(dispc, i, DISPC_OVL_FIR);
3602 DUMPREG(dispc, i, DISPC_OVL_PICTURE_SIZE);
3603 DUMPREG(dispc, i, DISPC_OVL_ACCU0);
3604 DUMPREG(dispc, i, DISPC_OVL_ACCU1);
3605 if (dispc_has_feature(dispc, FEAT_HANDLE_UV_SEPARATE)) {
3606 DUMPREG(dispc, i, DISPC_OVL_BA0_UV);
3607 DUMPREG(dispc, i, DISPC_OVL_BA1_UV);
3608 DUMPREG(dispc, i, DISPC_OVL_FIR2);
3609 DUMPREG(dispc, i, DISPC_OVL_ACCU2_0);
3610 DUMPREG(dispc, i, DISPC_OVL_ACCU2_1);
3611 }
3612 if (dispc_has_feature(dispc, FEAT_ATTR2))
3613 DUMPREG(dispc, i, DISPC_OVL_ATTRIBUTES2);
3614 }
3615
3616#undef DISPC_REG
3617#undef DUMPREG
3618
3619#define DISPC_REG(plane, name, i) name(plane, i)
3620#define DUMPREG(dispc, plane, name, i) \
3621 seq_printf(s, "%s_%d(%s)%*s %08x\n", #name, i, p_names[plane], \
3622 (int)(46 - strlen(#name) - strlen(p_names[plane])), " ", \
3623 dispc_read_reg(dispc, DISPC_REG(plane, name, i)))
3624
3625 /* Video pipeline coefficient registers */
3626
3627 /* start from OMAP_DSS_VIDEO1 */
3628 for (i = 1; i < dispc_get_num_ovls(dispc); i++) {
3629 for (j = 0; j < 8; j++)
3630 DUMPREG(dispc, i, DISPC_OVL_FIR_COEF_H, j);
3631
3632 for (j = 0; j < 8; j++)
3633 DUMPREG(dispc, i, DISPC_OVL_FIR_COEF_HV, j);
3634
3635 for (j = 0; j < 5; j++)
3636 DUMPREG(dispc, i, DISPC_OVL_CONV_COEF, j);
3637
3638 if (dispc_has_feature(dispc, FEAT_FIR_COEF_V)) {
3639 for (j = 0; j < 8; j++)
3640 DUMPREG(dispc, i, DISPC_OVL_FIR_COEF_V, j);
3641 }
3642
3643 if (dispc_has_feature(dispc, FEAT_HANDLE_UV_SEPARATE)) {
3644 for (j = 0; j < 8; j++)
3645 DUMPREG(dispc, i, DISPC_OVL_FIR_COEF_H2, j);
3646
3647 for (j = 0; j < 8; j++)
3648 DUMPREG(dispc, i, DISPC_OVL_FIR_COEF_HV2, j);
3649
3650 for (j = 0; j < 8; j++)
3651 DUMPREG(dispc, i, DISPC_OVL_FIR_COEF_V2, j);
3652 }
3653 }
3654
3655 dispc_runtime_put(dispc);
3656
3657#undef DISPC_REG
3658#undef DUMPREG
3659
3660 return 0;
3661}
3662
3663/* calculate clock rates using dividers in cinfo */
3664int dispc_calc_clock_rates(struct dispc_device *dispc,
3665 unsigned long dispc_fclk_rate,
3666 struct dispc_clock_info *cinfo)
3667{
3668 if (cinfo->lck_div > 255 || cinfo->lck_div == 0)
3669 return -EINVAL;
3670 if (cinfo->pck_div < 1 || cinfo->pck_div > 255)
3671 return -EINVAL;
3672
3673 cinfo->lck = dispc_fclk_rate / cinfo->lck_div;
3674 cinfo->pck = cinfo->lck / cinfo->pck_div;
3675
3676 return 0;
3677}
3678
3679bool dispc_div_calc(struct dispc_device *dispc, unsigned long dispc_freq,
3680 unsigned long pck_min, unsigned long pck_max,
3681 dispc_div_calc_func func, void *data)
3682{
3683 int lckd, lckd_start, lckd_stop;
3684 int pckd, pckd_start, pckd_stop;
3685 unsigned long pck, lck;
3686 unsigned long lck_max;
3687 unsigned long pckd_hw_min, pckd_hw_max;
3688 unsigned int min_fck_per_pck;
3689 unsigned long fck;
3690
3691#ifdef CONFIG_OMAP2_DSS_MIN_FCK_PER_PCK
3692 min_fck_per_pck = CONFIG_OMAP2_DSS_MIN_FCK_PER_PCK;
3693#else
3694 min_fck_per_pck = 0;
3695#endif
3696
3697 pckd_hw_min = dispc->feat->min_pcd;
3698 pckd_hw_max = 255;
3699
3700 lck_max = dss_get_max_fck_rate(dispc->dss);
3701
3702 pck_min = pck_min ? pck_min : 1;
3703 pck_max = pck_max ? pck_max : ULONG_MAX;
3704
3705 lckd_start = max(DIV_ROUND_UP(dispc_freq, lck_max), 1ul);
3706 lckd_stop = min(dispc_freq / pck_min, 255ul);
3707
3708 for (lckd = lckd_start; lckd <= lckd_stop; ++lckd) {
3709 lck = dispc_freq / lckd;
3710
3711 pckd_start = max(DIV_ROUND_UP(lck, pck_max), pckd_hw_min);
3712 pckd_stop = min(lck / pck_min, pckd_hw_max);
3713
3714 for (pckd = pckd_start; pckd <= pckd_stop; ++pckd) {
3715 pck = lck / pckd;
3716
3717 /*
3718 * For OMAP2/3 the DISPC fclk is the same as LCD's logic
3719 * clock, which means we're configuring DISPC fclk here
3720 * also. Thus we need to use the calculated lck. For
3721 * OMAP4+ the DISPC fclk is a separate clock.
3722 */
3723 if (dispc_has_feature(dispc, FEAT_CORE_CLK_DIV))
3724 fck = dispc_core_clk_rate(dispc);
3725 else
3726 fck = lck;
3727
3728 if (fck < pck * min_fck_per_pck)
3729 continue;
3730
3731 if (func(lckd, pckd, lck, pck, data))
3732 return true;
3733 }
3734 }
3735
3736 return false;
3737}
3738
3739void dispc_mgr_set_clock_div(struct dispc_device *dispc,
3740 enum omap_channel channel,
3741 const struct dispc_clock_info *cinfo)
3742{
3743 DSSDBG("lck = %lu (%u)\n", cinfo->lck, cinfo->lck_div);
3744 DSSDBG("pck = %lu (%u)\n", cinfo->pck, cinfo->pck_div);
3745
3746 dispc_mgr_set_lcd_divisor(dispc, channel, cinfo->lck_div,
3747 cinfo->pck_div);
3748}
3749
3750int dispc_mgr_get_clock_div(struct dispc_device *dispc,
3751 enum omap_channel channel,
3752 struct dispc_clock_info *cinfo)
3753{
3754 unsigned long fck;
3755
3756 fck = dispc_fclk_rate(dispc);
3757
3758 cinfo->lck_div = REG_GET(dispc, DISPC_DIVISORo(channel), 23, 16);
3759 cinfo->pck_div = REG_GET(dispc, DISPC_DIVISORo(channel), 7, 0);
3760
3761 cinfo->lck = fck / cinfo->lck_div;
3762 cinfo->pck = cinfo->lck / cinfo->pck_div;
3763
3764 return 0;
3765}
3766
3767u32 dispc_read_irqstatus(struct dispc_device *dispc)
3768{
3769 return dispc_read_reg(dispc, DISPC_IRQSTATUS);
3770}
3771
3772void dispc_clear_irqstatus(struct dispc_device *dispc, u32 mask)
3773{
3774 dispc_write_reg(dispc, DISPC_IRQSTATUS, mask);
3775}
3776
3777void dispc_write_irqenable(struct dispc_device *dispc, u32 mask)
3778{
3779 u32 old_mask = dispc_read_reg(dispc, DISPC_IRQENABLE);
3780
3781 /* clear the irqstatus for newly enabled irqs */
3782 dispc_clear_irqstatus(dispc, (mask ^ old_mask) & mask);
3783
3784 dispc_write_reg(dispc, DISPC_IRQENABLE, mask);
3785
3786 /* flush posted write */
3787 dispc_read_reg(dispc, DISPC_IRQENABLE);
3788}
3789
3790void dispc_enable_sidle(struct dispc_device *dispc)
3791{
3792 /* SIDLEMODE: smart idle */
3793 REG_FLD_MOD(dispc, DISPC_SYSCONFIG, 2, 4, 3);
3794}
3795
3796void dispc_disable_sidle(struct dispc_device *dispc)
3797{
3798 REG_FLD_MOD(dispc, DISPC_SYSCONFIG, 1, 4, 3); /* SIDLEMODE: no idle */
3799}
3800
3801u32 dispc_mgr_gamma_size(struct dispc_device *dispc,
3802 enum omap_channel channel)
3803{
3804 const struct dispc_gamma_desc *gdesc = &mgr_desc[channel].gamma;
3805
3806 if (!dispc->feat->has_gamma_table)
3807 return 0;
3808
3809 return gdesc->len;
3810}
3811
3812static void dispc_mgr_write_gamma_table(struct dispc_device *dispc,
3813 enum omap_channel channel)
3814{
3815 const struct dispc_gamma_desc *gdesc = &mgr_desc[channel].gamma;
3816 u32 *table = dispc->gamma_table[channel];
3817 unsigned int i;
3818
3819 DSSDBG("%s: channel %d\n", __func__, channel);
3820
3821 for (i = 0; i < gdesc->len; ++i) {
3822 u32 v = table[i];
3823
3824 if (gdesc->has_index)
3825 v |= i << 24;
3826 else if (i == 0)
3827 v |= 1 << 31;
3828
3829 dispc_write_reg(dispc, gdesc->reg, v);
3830 }
3831}
3832
3833static void dispc_restore_gamma_tables(struct dispc_device *dispc)
3834{
3835 DSSDBG("%s()\n", __func__);
3836
3837 if (!dispc->feat->has_gamma_table)
3838 return;
3839
3840 dispc_mgr_write_gamma_table(dispc, OMAP_DSS_CHANNEL_LCD);
3841
3842 dispc_mgr_write_gamma_table(dispc, OMAP_DSS_CHANNEL_DIGIT);
3843
3844 if (dispc_has_feature(dispc, FEAT_MGR_LCD2))
3845 dispc_mgr_write_gamma_table(dispc, OMAP_DSS_CHANNEL_LCD2);
3846
3847 if (dispc_has_feature(dispc, FEAT_MGR_LCD3))
3848 dispc_mgr_write_gamma_table(dispc, OMAP_DSS_CHANNEL_LCD3);
3849}
3850
3851static const struct drm_color_lut dispc_mgr_gamma_default_lut[] = {
3852 { .red = 0, .green = 0, .blue = 0, },
3853 { .red = U16_MAX, .green = U16_MAX, .blue = U16_MAX, },
3854};
3855
3856void dispc_mgr_set_gamma(struct dispc_device *dispc,
3857 enum omap_channel channel,
3858 const struct drm_color_lut *lut,
3859 unsigned int length)
3860{
3861 const struct dispc_gamma_desc *gdesc = &mgr_desc[channel].gamma;
3862 u32 *table = dispc->gamma_table[channel];
3863 uint i;
3864
3865 DSSDBG("%s: channel %d, lut len %u, hw len %u\n", __func__,
3866 channel, length, gdesc->len);
3867
3868 if (!dispc->feat->has_gamma_table)
3869 return;
3870
3871 if (lut == NULL || length < 2) {
3872 lut = dispc_mgr_gamma_default_lut;
3873 length = ARRAY_SIZE(dispc_mgr_gamma_default_lut);
3874 }
3875
3876 for (i = 0; i < length - 1; ++i) {
3877 uint first = i * (gdesc->len - 1) / (length - 1);
3878 uint last = (i + 1) * (gdesc->len - 1) / (length - 1);
3879 uint w = last - first;
3880 u16 r, g, b;
3881 uint j;
3882
3883 if (w == 0)
3884 continue;
3885
3886 for (j = 0; j <= w; j++) {
3887 r = (lut[i].red * (w - j) + lut[i+1].red * j) / w;
3888 g = (lut[i].green * (w - j) + lut[i+1].green * j) / w;
3889 b = (lut[i].blue * (w - j) + lut[i+1].blue * j) / w;
3890
3891 r >>= 16 - gdesc->bits;
3892 g >>= 16 - gdesc->bits;
3893 b >>= 16 - gdesc->bits;
3894
3895 table[first + j] = (r << (gdesc->bits * 2)) |
3896 (g << gdesc->bits) | b;
3897 }
3898 }
3899
3900 if (dispc->is_enabled)
3901 dispc_mgr_write_gamma_table(dispc, channel);
3902}
3903
3904static int dispc_init_gamma_tables(struct dispc_device *dispc)
3905{
3906 int channel;
3907
3908 if (!dispc->feat->has_gamma_table)
3909 return 0;
3910
3911 for (channel = 0; channel < ARRAY_SIZE(dispc->gamma_table); channel++) {
3912 const struct dispc_gamma_desc *gdesc = &mgr_desc[channel].gamma;
3913 u32 *gt;
3914
3915 if (channel == OMAP_DSS_CHANNEL_LCD2 &&
3916 !dispc_has_feature(dispc, FEAT_MGR_LCD2))
3917 continue;
3918
3919 if (channel == OMAP_DSS_CHANNEL_LCD3 &&
3920 !dispc_has_feature(dispc, FEAT_MGR_LCD3))
3921 continue;
3922
3923 gt = devm_kmalloc_array(&dispc->pdev->dev, gdesc->len,
3924 sizeof(u32), GFP_KERNEL);
3925 if (!gt)
3926 return -ENOMEM;
3927
3928 dispc->gamma_table[channel] = gt;
3929
3930 dispc_mgr_set_gamma(dispc, channel, NULL, 0);
3931 }
3932 return 0;
3933}
3934
3935static void _omap_dispc_initial_config(struct dispc_device *dispc)
3936{
3937 u32 l;
3938
3939 /* Exclusively enable DISPC_CORE_CLK and set divider to 1 */
3940 if (dispc_has_feature(dispc, FEAT_CORE_CLK_DIV)) {
3941 l = dispc_read_reg(dispc, DISPC_DIVISOR);
3942 /* Use DISPC_DIVISOR.LCD, instead of DISPC_DIVISOR1.LCD */
3943 l = FLD_MOD(l, 1, 0, 0);
3944 l = FLD_MOD(l, 1, 23, 16);
3945 dispc_write_reg(dispc, DISPC_DIVISOR, l);
3946
3947 dispc->core_clk_rate = dispc_fclk_rate(dispc);
3948 }
3949
3950 /* Use gamma table mode, instead of palette mode */
3951 if (dispc->feat->has_gamma_table)
3952 REG_FLD_MOD(dispc, DISPC_CONFIG, 1, 3, 3);
3953
3954 /* For older DSS versions (FEAT_FUNCGATED) this enables
3955 * func-clock auto-gating. For newer versions
3956 * (dispc->feat->has_gamma_table) this enables tv-out gamma tables.
3957 */
3958 if (dispc_has_feature(dispc, FEAT_FUNCGATED) ||
3959 dispc->feat->has_gamma_table)
3960 REG_FLD_MOD(dispc, DISPC_CONFIG, 1, 9, 9);
3961
3962 dispc_set_loadmode(dispc, OMAP_DSS_LOAD_FRAME_ONLY);
3963
3964 dispc_init_fifos(dispc);
3965
3966 dispc_configure_burst_sizes(dispc);
3967
3968 dispc_ovl_enable_zorder_planes(dispc);
3969
3970 if (dispc->feat->mstandby_workaround)
3971 REG_FLD_MOD(dispc, DISPC_MSTANDBY_CTRL, 1, 0, 0);
3972
3973 if (dispc_has_feature(dispc, FEAT_MFLAG))
3974 dispc_init_mflag(dispc);
3975}
3976
3977static const enum dispc_feature_id omap2_dispc_features_list[] = {
3978 FEAT_LCDENABLEPOL,
3979 FEAT_LCDENABLESIGNAL,
3980 FEAT_PCKFREEENABLE,
3981 FEAT_FUNCGATED,
3982 FEAT_ROWREPEATENABLE,
3983 FEAT_RESIZECONF,
3984};
3985
3986static const enum dispc_feature_id omap3_dispc_features_list[] = {
3987 FEAT_LCDENABLEPOL,
3988 FEAT_LCDENABLESIGNAL,
3989 FEAT_PCKFREEENABLE,
3990 FEAT_FUNCGATED,
3991 FEAT_LINEBUFFERSPLIT,
3992 FEAT_ROWREPEATENABLE,
3993 FEAT_RESIZECONF,
3994 FEAT_CPR,
3995 FEAT_PRELOAD,
3996 FEAT_FIR_COEF_V,
3997 FEAT_ALPHA_FIXED_ZORDER,
3998 FEAT_FIFO_MERGE,
3999 FEAT_OMAP3_DSI_FIFO_BUG,
4000};
4001
4002static const enum dispc_feature_id am43xx_dispc_features_list[] = {
4003 FEAT_LCDENABLEPOL,
4004 FEAT_LCDENABLESIGNAL,
4005 FEAT_PCKFREEENABLE,
4006 FEAT_FUNCGATED,
4007 FEAT_LINEBUFFERSPLIT,
4008 FEAT_ROWREPEATENABLE,
4009 FEAT_RESIZECONF,
4010 FEAT_CPR,
4011 FEAT_PRELOAD,
4012 FEAT_FIR_COEF_V,
4013 FEAT_ALPHA_FIXED_ZORDER,
4014 FEAT_FIFO_MERGE,
4015};
4016
4017static const enum dispc_feature_id omap4_dispc_features_list[] = {
4018 FEAT_MGR_LCD2,
4019 FEAT_CORE_CLK_DIV,
4020 FEAT_HANDLE_UV_SEPARATE,
4021 FEAT_ATTR2,
4022 FEAT_CPR,
4023 FEAT_PRELOAD,
4024 FEAT_FIR_COEF_V,
4025 FEAT_ALPHA_FREE_ZORDER,
4026 FEAT_FIFO_MERGE,
4027 FEAT_BURST_2D,
4028};
4029
4030static const enum dispc_feature_id omap5_dispc_features_list[] = {
4031 FEAT_MGR_LCD2,
4032 FEAT_MGR_LCD3,
4033 FEAT_CORE_CLK_DIV,
4034 FEAT_HANDLE_UV_SEPARATE,
4035 FEAT_ATTR2,
4036 FEAT_CPR,
4037 FEAT_PRELOAD,
4038 FEAT_FIR_COEF_V,
4039 FEAT_ALPHA_FREE_ZORDER,
4040 FEAT_FIFO_MERGE,
4041 FEAT_BURST_2D,
4042 FEAT_MFLAG,
4043};
4044
4045static const struct dss_reg_field omap2_dispc_reg_fields[] = {
4046 [FEAT_REG_FIRHINC] = { 11, 0 },
4047 [FEAT_REG_FIRVINC] = { 27, 16 },
4048 [FEAT_REG_FIFOLOWTHRESHOLD] = { 8, 0 },
4049 [FEAT_REG_FIFOHIGHTHRESHOLD] = { 24, 16 },
4050 [FEAT_REG_FIFOSIZE] = { 8, 0 },
4051 [FEAT_REG_HORIZONTALACCU] = { 9, 0 },
4052 [FEAT_REG_VERTICALACCU] = { 25, 16 },
4053};
4054
4055static const struct dss_reg_field omap3_dispc_reg_fields[] = {
4056 [FEAT_REG_FIRHINC] = { 12, 0 },
4057 [FEAT_REG_FIRVINC] = { 28, 16 },
4058 [FEAT_REG_FIFOLOWTHRESHOLD] = { 11, 0 },
4059 [FEAT_REG_FIFOHIGHTHRESHOLD] = { 27, 16 },
4060 [FEAT_REG_FIFOSIZE] = { 10, 0 },
4061 [FEAT_REG_HORIZONTALACCU] = { 9, 0 },
4062 [FEAT_REG_VERTICALACCU] = { 25, 16 },
4063};
4064
4065static const struct dss_reg_field omap4_dispc_reg_fields[] = {
4066 [FEAT_REG_FIRHINC] = { 12, 0 },
4067 [FEAT_REG_FIRVINC] = { 28, 16 },
4068 [FEAT_REG_FIFOLOWTHRESHOLD] = { 15, 0 },
4069 [FEAT_REG_FIFOHIGHTHRESHOLD] = { 31, 16 },
4070 [FEAT_REG_FIFOSIZE] = { 15, 0 },
4071 [FEAT_REG_HORIZONTALACCU] = { 10, 0 },
4072 [FEAT_REG_VERTICALACCU] = { 26, 16 },
4073};
4074
4075static const enum omap_overlay_caps omap2_dispc_overlay_caps[] = {
4076 /* OMAP_DSS_GFX */
4077 OMAP_DSS_OVL_CAP_POS | OMAP_DSS_OVL_CAP_REPLICATION,
4078
4079 /* OMAP_DSS_VIDEO1 */
4080 OMAP_DSS_OVL_CAP_SCALE | OMAP_DSS_OVL_CAP_POS |
4081 OMAP_DSS_OVL_CAP_REPLICATION,
4082
4083 /* OMAP_DSS_VIDEO2 */
4084 OMAP_DSS_OVL_CAP_SCALE | OMAP_DSS_OVL_CAP_POS |
4085 OMAP_DSS_OVL_CAP_REPLICATION,
4086};
4087
4088static const enum omap_overlay_caps omap3430_dispc_overlay_caps[] = {
4089 /* OMAP_DSS_GFX */
4090 OMAP_DSS_OVL_CAP_GLOBAL_ALPHA | OMAP_DSS_OVL_CAP_POS |
4091 OMAP_DSS_OVL_CAP_REPLICATION,
4092
4093 /* OMAP_DSS_VIDEO1 */
4094 OMAP_DSS_OVL_CAP_SCALE | OMAP_DSS_OVL_CAP_POS |
4095 OMAP_DSS_OVL_CAP_REPLICATION,
4096
4097 /* OMAP_DSS_VIDEO2 */
4098 OMAP_DSS_OVL_CAP_SCALE | OMAP_DSS_OVL_CAP_GLOBAL_ALPHA |
4099 OMAP_DSS_OVL_CAP_POS | OMAP_DSS_OVL_CAP_REPLICATION,
4100};
4101
4102static const enum omap_overlay_caps omap3630_dispc_overlay_caps[] = {
4103 /* OMAP_DSS_GFX */
4104 OMAP_DSS_OVL_CAP_GLOBAL_ALPHA | OMAP_DSS_OVL_CAP_PRE_MULT_ALPHA |
4105 OMAP_DSS_OVL_CAP_POS | OMAP_DSS_OVL_CAP_REPLICATION,
4106
4107 /* OMAP_DSS_VIDEO1 */
4108 OMAP_DSS_OVL_CAP_SCALE | OMAP_DSS_OVL_CAP_POS |
4109 OMAP_DSS_OVL_CAP_REPLICATION,
4110
4111 /* OMAP_DSS_VIDEO2 */
4112 OMAP_DSS_OVL_CAP_SCALE | OMAP_DSS_OVL_CAP_GLOBAL_ALPHA |
4113 OMAP_DSS_OVL_CAP_PRE_MULT_ALPHA | OMAP_DSS_OVL_CAP_POS |
4114 OMAP_DSS_OVL_CAP_REPLICATION,
4115};
4116
4117static const enum omap_overlay_caps omap4_dispc_overlay_caps[] = {
4118 /* OMAP_DSS_GFX */
4119 OMAP_DSS_OVL_CAP_GLOBAL_ALPHA | OMAP_DSS_OVL_CAP_PRE_MULT_ALPHA |
4120 OMAP_DSS_OVL_CAP_ZORDER | OMAP_DSS_OVL_CAP_POS |
4121 OMAP_DSS_OVL_CAP_REPLICATION,
4122
4123 /* OMAP_DSS_VIDEO1 */
4124 OMAP_DSS_OVL_CAP_SCALE | OMAP_DSS_OVL_CAP_GLOBAL_ALPHA |
4125 OMAP_DSS_OVL_CAP_PRE_MULT_ALPHA | OMAP_DSS_OVL_CAP_ZORDER |
4126 OMAP_DSS_OVL_CAP_POS | OMAP_DSS_OVL_CAP_REPLICATION,
4127
4128 /* OMAP_DSS_VIDEO2 */
4129 OMAP_DSS_OVL_CAP_SCALE | OMAP_DSS_OVL_CAP_GLOBAL_ALPHA |
4130 OMAP_DSS_OVL_CAP_PRE_MULT_ALPHA | OMAP_DSS_OVL_CAP_ZORDER |
4131 OMAP_DSS_OVL_CAP_POS | OMAP_DSS_OVL_CAP_REPLICATION,
4132
4133 /* OMAP_DSS_VIDEO3 */
4134 OMAP_DSS_OVL_CAP_SCALE | OMAP_DSS_OVL_CAP_GLOBAL_ALPHA |
4135 OMAP_DSS_OVL_CAP_PRE_MULT_ALPHA | OMAP_DSS_OVL_CAP_ZORDER |
4136 OMAP_DSS_OVL_CAP_POS | OMAP_DSS_OVL_CAP_REPLICATION,
4137};
4138
4139#define COLOR_ARRAY(arr...) (const u32[]) { arr, 0 }
4140
4141static const u32 *omap2_dispc_supported_color_modes[] = {
4142
4143 /* OMAP_DSS_GFX */
4144 COLOR_ARRAY(
4145 DRM_FORMAT_RGBX4444, DRM_FORMAT_RGB565,
4146 DRM_FORMAT_XRGB8888, DRM_FORMAT_RGB888),
4147
4148 /* OMAP_DSS_VIDEO1 */
4149 COLOR_ARRAY(
4150 DRM_FORMAT_RGB565, DRM_FORMAT_XRGB8888,
4151 DRM_FORMAT_RGB888, DRM_FORMAT_YUYV,
4152 DRM_FORMAT_UYVY),
4153
4154 /* OMAP_DSS_VIDEO2 */
4155 COLOR_ARRAY(
4156 DRM_FORMAT_RGB565, DRM_FORMAT_XRGB8888,
4157 DRM_FORMAT_RGB888, DRM_FORMAT_YUYV,
4158 DRM_FORMAT_UYVY),
4159};
4160
4161static const u32 *omap3_dispc_supported_color_modes[] = {
4162 /* OMAP_DSS_GFX */
4163 COLOR_ARRAY(
4164 DRM_FORMAT_RGBX4444, DRM_FORMAT_ARGB4444,
4165 DRM_FORMAT_RGB565, DRM_FORMAT_XRGB8888,
4166 DRM_FORMAT_RGB888, DRM_FORMAT_ARGB8888,
4167 DRM_FORMAT_RGBA8888, DRM_FORMAT_RGBX8888),
4168
4169 /* OMAP_DSS_VIDEO1 */
4170 COLOR_ARRAY(
4171 DRM_FORMAT_XRGB8888, DRM_FORMAT_RGB888,
4172 DRM_FORMAT_RGBX4444, DRM_FORMAT_RGB565,
4173 DRM_FORMAT_YUYV, DRM_FORMAT_UYVY),
4174
4175 /* OMAP_DSS_VIDEO2 */
4176 COLOR_ARRAY(
4177 DRM_FORMAT_RGBX4444, DRM_FORMAT_ARGB4444,
4178 DRM_FORMAT_RGB565, DRM_FORMAT_XRGB8888,
4179 DRM_FORMAT_RGB888, DRM_FORMAT_YUYV,
4180 DRM_FORMAT_UYVY, DRM_FORMAT_ARGB8888,
4181 DRM_FORMAT_RGBA8888, DRM_FORMAT_RGBX8888),
4182};
4183
4184static const u32 *omap4_dispc_supported_color_modes[] = {
4185 /* OMAP_DSS_GFX */
4186 COLOR_ARRAY(
4187 DRM_FORMAT_RGBX4444, DRM_FORMAT_ARGB4444,
4188 DRM_FORMAT_RGB565, DRM_FORMAT_XRGB8888,
4189 DRM_FORMAT_RGB888, DRM_FORMAT_ARGB8888,
4190 DRM_FORMAT_RGBA8888, DRM_FORMAT_RGBX8888,
4191 DRM_FORMAT_ARGB1555, DRM_FORMAT_XRGB4444,
4192 DRM_FORMAT_RGBA4444, DRM_FORMAT_XRGB1555),
4193
4194 /* OMAP_DSS_VIDEO1 */
4195 COLOR_ARRAY(
4196 DRM_FORMAT_RGB565, DRM_FORMAT_RGBX4444,
4197 DRM_FORMAT_YUYV, DRM_FORMAT_ARGB1555,
4198 DRM_FORMAT_RGBA8888, DRM_FORMAT_NV12,
4199 DRM_FORMAT_RGBA4444, DRM_FORMAT_XRGB8888,
4200 DRM_FORMAT_RGB888, DRM_FORMAT_UYVY,
4201 DRM_FORMAT_ARGB4444, DRM_FORMAT_XRGB1555,
4202 DRM_FORMAT_ARGB8888, DRM_FORMAT_XRGB4444,
4203 DRM_FORMAT_RGBX8888),
4204
4205 /* OMAP_DSS_VIDEO2 */
4206 COLOR_ARRAY(
4207 DRM_FORMAT_RGB565, DRM_FORMAT_RGBX4444,
4208 DRM_FORMAT_YUYV, DRM_FORMAT_ARGB1555,
4209 DRM_FORMAT_RGBA8888, DRM_FORMAT_NV12,
4210 DRM_FORMAT_RGBA4444, DRM_FORMAT_XRGB8888,
4211 DRM_FORMAT_RGB888, DRM_FORMAT_UYVY,
4212 DRM_FORMAT_ARGB4444, DRM_FORMAT_XRGB1555,
4213 DRM_FORMAT_ARGB8888, DRM_FORMAT_XRGB4444,
4214 DRM_FORMAT_RGBX8888),
4215
4216 /* OMAP_DSS_VIDEO3 */
4217 COLOR_ARRAY(
4218 DRM_FORMAT_RGB565, DRM_FORMAT_RGBX4444,
4219 DRM_FORMAT_YUYV, DRM_FORMAT_ARGB1555,
4220 DRM_FORMAT_RGBA8888, DRM_FORMAT_NV12,
4221 DRM_FORMAT_RGBA4444, DRM_FORMAT_XRGB8888,
4222 DRM_FORMAT_RGB888, DRM_FORMAT_UYVY,
4223 DRM_FORMAT_ARGB4444, DRM_FORMAT_XRGB1555,
4224 DRM_FORMAT_ARGB8888, DRM_FORMAT_XRGB4444,
4225 DRM_FORMAT_RGBX8888),
4226
4227 /* OMAP_DSS_WB */
4228 COLOR_ARRAY(
4229 DRM_FORMAT_RGB565, DRM_FORMAT_RGBX4444,
4230 DRM_FORMAT_YUYV, DRM_FORMAT_ARGB1555,
4231 DRM_FORMAT_RGBA8888, DRM_FORMAT_NV12,
4232 DRM_FORMAT_RGBA4444, DRM_FORMAT_XRGB8888,
4233 DRM_FORMAT_RGB888, DRM_FORMAT_UYVY,
4234 DRM_FORMAT_ARGB4444, DRM_FORMAT_XRGB1555,
4235 DRM_FORMAT_ARGB8888, DRM_FORMAT_XRGB4444,
4236 DRM_FORMAT_RGBX8888),
4237};
4238
4239static const u32 omap3_dispc_supported_scaler_color_modes[] = {
4240 DRM_FORMAT_XRGB8888, DRM_FORMAT_RGB565, DRM_FORMAT_YUYV,
4241 DRM_FORMAT_UYVY,
4242 0,
4243};
4244
4245static const struct dispc_features omap24xx_dispc_feats = {
4246 .sw_start = 5,
4247 .fp_start = 15,
4248 .bp_start = 27,
4249 .sw_max = 64,
4250 .vp_max = 255,
4251 .hp_max = 256,
4252 .mgr_width_start = 10,
4253 .mgr_height_start = 26,
4254 .mgr_width_max = 2048,
4255 .mgr_height_max = 2048,
4256 .ovl_width_max = 2048,
4257 .ovl_height_max = 2048,
4258 .max_lcd_pclk = 66500000,
4259 .max_downscale = 2,
4260 /*
4261 * Assume the line width buffer to be 768 pixels as OMAP2 DISPC scaler
4262 * cannot scale an image width larger than 768.
4263 */
4264 .max_line_width = 768,
4265 .min_pcd = 2,
4266 .calc_scaling = dispc_ovl_calc_scaling_24xx,
4267 .calc_core_clk = calc_core_clk_24xx,
4268 .num_fifos = 3,
4269 .features = omap2_dispc_features_list,
4270 .num_features = ARRAY_SIZE(omap2_dispc_features_list),
4271 .reg_fields = omap2_dispc_reg_fields,
4272 .num_reg_fields = ARRAY_SIZE(omap2_dispc_reg_fields),
4273 .overlay_caps = omap2_dispc_overlay_caps,
4274 .supported_color_modes = omap2_dispc_supported_color_modes,
4275 .supported_scaler_color_modes = COLOR_ARRAY(DRM_FORMAT_XRGB8888),
4276 .num_mgrs = 2,
4277 .num_ovls = 3,
4278 .buffer_size_unit = 1,
4279 .burst_size_unit = 8,
4280 .no_framedone_tv = true,
4281 .set_max_preload = false,
4282 .last_pixel_inc_missing = true,
4283};
4284
4285static const struct dispc_features omap34xx_rev1_0_dispc_feats = {
4286 .sw_start = 5,
4287 .fp_start = 15,
4288 .bp_start = 27,
4289 .sw_max = 64,
4290 .vp_max = 255,
4291 .hp_max = 256,
4292 .mgr_width_start = 10,
4293 .mgr_height_start = 26,
4294 .mgr_width_max = 2048,
4295 .mgr_height_max = 2048,
4296 .ovl_width_max = 2048,
4297 .ovl_height_max = 2048,
4298 .max_lcd_pclk = 173000000,
4299 .max_tv_pclk = 59000000,
4300 .max_downscale = 4,
4301 .max_line_width = 1024,
4302 .min_pcd = 1,
4303 .calc_scaling = dispc_ovl_calc_scaling_34xx,
4304 .calc_core_clk = calc_core_clk_34xx,
4305 .num_fifos = 3,
4306 .features = omap3_dispc_features_list,
4307 .num_features = ARRAY_SIZE(omap3_dispc_features_list),
4308 .reg_fields = omap3_dispc_reg_fields,
4309 .num_reg_fields = ARRAY_SIZE(omap3_dispc_reg_fields),
4310 .overlay_caps = omap3430_dispc_overlay_caps,
4311 .supported_color_modes = omap3_dispc_supported_color_modes,
4312 .supported_scaler_color_modes = omap3_dispc_supported_scaler_color_modes,
4313 .num_mgrs = 2,
4314 .num_ovls = 3,
4315 .buffer_size_unit = 1,
4316 .burst_size_unit = 8,
4317 .no_framedone_tv = true,
4318 .set_max_preload = false,
4319 .last_pixel_inc_missing = true,
4320};
4321
4322static const struct dispc_features omap34xx_rev3_0_dispc_feats = {
4323 .sw_start = 7,
4324 .fp_start = 19,
4325 .bp_start = 31,
4326 .sw_max = 256,
4327 .vp_max = 4095,
4328 .hp_max = 4096,
4329 .mgr_width_start = 10,
4330 .mgr_height_start = 26,
4331 .mgr_width_max = 2048,
4332 .mgr_height_max = 2048,
4333 .ovl_width_max = 2048,
4334 .ovl_height_max = 2048,
4335 .max_lcd_pclk = 173000000,
4336 .max_tv_pclk = 59000000,
4337 .max_downscale = 4,
4338 .max_line_width = 1024,
4339 .min_pcd = 1,
4340 .calc_scaling = dispc_ovl_calc_scaling_34xx,
4341 .calc_core_clk = calc_core_clk_34xx,
4342 .num_fifos = 3,
4343 .features = omap3_dispc_features_list,
4344 .num_features = ARRAY_SIZE(omap3_dispc_features_list),
4345 .reg_fields = omap3_dispc_reg_fields,
4346 .num_reg_fields = ARRAY_SIZE(omap3_dispc_reg_fields),
4347 .overlay_caps = omap3430_dispc_overlay_caps,
4348 .supported_color_modes = omap3_dispc_supported_color_modes,
4349 .supported_scaler_color_modes = omap3_dispc_supported_scaler_color_modes,
4350 .num_mgrs = 2,
4351 .num_ovls = 3,
4352 .buffer_size_unit = 1,
4353 .burst_size_unit = 8,
4354 .no_framedone_tv = true,
4355 .set_max_preload = false,
4356 .last_pixel_inc_missing = true,
4357};
4358
4359static const struct dispc_features omap36xx_dispc_feats = {
4360 .sw_start = 7,
4361 .fp_start = 19,
4362 .bp_start = 31,
4363 .sw_max = 256,
4364 .vp_max = 4095,
4365 .hp_max = 4096,
4366 .mgr_width_start = 10,
4367 .mgr_height_start = 26,
4368 .mgr_width_max = 2048,
4369 .mgr_height_max = 2048,
4370 .ovl_width_max = 2048,
4371 .ovl_height_max = 2048,
4372 .max_lcd_pclk = 173000000,
4373 .max_tv_pclk = 59000000,
4374 .max_downscale = 4,
4375 .max_line_width = 1024,
4376 .min_pcd = 1,
4377 .calc_scaling = dispc_ovl_calc_scaling_34xx,
4378 .calc_core_clk = calc_core_clk_34xx,
4379 .num_fifos = 3,
4380 .features = omap3_dispc_features_list,
4381 .num_features = ARRAY_SIZE(omap3_dispc_features_list),
4382 .reg_fields = omap3_dispc_reg_fields,
4383 .num_reg_fields = ARRAY_SIZE(omap3_dispc_reg_fields),
4384 .overlay_caps = omap3630_dispc_overlay_caps,
4385 .supported_color_modes = omap3_dispc_supported_color_modes,
4386 .supported_scaler_color_modes = omap3_dispc_supported_scaler_color_modes,
4387 .num_mgrs = 2,
4388 .num_ovls = 3,
4389 .buffer_size_unit = 1,
4390 .burst_size_unit = 8,
4391 .no_framedone_tv = true,
4392 .set_max_preload = false,
4393 .last_pixel_inc_missing = true,
4394};
4395
4396static const struct dispc_features am43xx_dispc_feats = {
4397 .sw_start = 7,
4398 .fp_start = 19,
4399 .bp_start = 31,
4400 .sw_max = 256,
4401 .vp_max = 4095,
4402 .hp_max = 4096,
4403 .mgr_width_start = 10,
4404 .mgr_height_start = 26,
4405 .mgr_width_max = 2048,
4406 .mgr_height_max = 2048,
4407 .ovl_width_max = 2048,
4408 .ovl_height_max = 2048,
4409 .max_lcd_pclk = 173000000,
4410 .max_tv_pclk = 59000000,
4411 .max_downscale = 4,
4412 .max_line_width = 1024,
4413 .min_pcd = 1,
4414 .calc_scaling = dispc_ovl_calc_scaling_34xx,
4415 .calc_core_clk = calc_core_clk_34xx,
4416 .num_fifos = 3,
4417 .features = am43xx_dispc_features_list,
4418 .num_features = ARRAY_SIZE(am43xx_dispc_features_list),
4419 .reg_fields = omap3_dispc_reg_fields,
4420 .num_reg_fields = ARRAY_SIZE(omap3_dispc_reg_fields),
4421 .overlay_caps = omap3430_dispc_overlay_caps,
4422 .supported_color_modes = omap3_dispc_supported_color_modes,
4423 .supported_scaler_color_modes = omap3_dispc_supported_scaler_color_modes,
4424 .num_mgrs = 1,
4425 .num_ovls = 3,
4426 .buffer_size_unit = 1,
4427 .burst_size_unit = 8,
4428 .no_framedone_tv = true,
4429 .set_max_preload = false,
4430 .last_pixel_inc_missing = true,
4431};
4432
4433static const struct dispc_features omap44xx_dispc_feats = {
4434 .sw_start = 7,
4435 .fp_start = 19,
4436 .bp_start = 31,
4437 .sw_max = 256,
4438 .vp_max = 4095,
4439 .hp_max = 4096,
4440 .mgr_width_start = 10,
4441 .mgr_height_start = 26,
4442 .mgr_width_max = 2048,
4443 .mgr_height_max = 2048,
4444 .ovl_width_max = 2048,
4445 .ovl_height_max = 2048,
4446 .max_lcd_pclk = 170000000,
4447 .max_tv_pclk = 185625000,
4448 .max_downscale = 4,
4449 .max_line_width = 2048,
4450 .min_pcd = 1,
4451 .calc_scaling = dispc_ovl_calc_scaling_44xx,
4452 .calc_core_clk = calc_core_clk_44xx,
4453 .num_fifos = 5,
4454 .features = omap4_dispc_features_list,
4455 .num_features = ARRAY_SIZE(omap4_dispc_features_list),
4456 .reg_fields = omap4_dispc_reg_fields,
4457 .num_reg_fields = ARRAY_SIZE(omap4_dispc_reg_fields),
4458 .overlay_caps = omap4_dispc_overlay_caps,
4459 .supported_color_modes = omap4_dispc_supported_color_modes,
4460 .num_mgrs = 3,
4461 .num_ovls = 4,
4462 .buffer_size_unit = 16,
4463 .burst_size_unit = 16,
4464 .gfx_fifo_workaround = true,
4465 .set_max_preload = true,
4466 .supports_sync_align = true,
4467 .has_writeback = true,
4468 .supports_double_pixel = true,
4469 .reverse_ilace_field_order = true,
4470 .has_gamma_table = true,
4471 .has_gamma_i734_bug = true,
4472};
4473
4474static const struct dispc_features omap54xx_dispc_feats = {
4475 .sw_start = 7,
4476 .fp_start = 19,
4477 .bp_start = 31,
4478 .sw_max = 256,
4479 .vp_max = 4095,
4480 .hp_max = 4096,
4481 .mgr_width_start = 11,
4482 .mgr_height_start = 27,
4483 .mgr_width_max = 4096,
4484 .mgr_height_max = 4096,
4485 .ovl_width_max = 2048,
4486 .ovl_height_max = 4096,
4487 .max_lcd_pclk = 170000000,
4488 .max_tv_pclk = 192000000,
4489 .max_downscale = 4,
4490 .max_line_width = 2048,
4491 .min_pcd = 1,
4492 .calc_scaling = dispc_ovl_calc_scaling_44xx,
4493 .calc_core_clk = calc_core_clk_44xx,
4494 .num_fifos = 5,
4495 .features = omap5_dispc_features_list,
4496 .num_features = ARRAY_SIZE(omap5_dispc_features_list),
4497 .reg_fields = omap4_dispc_reg_fields,
4498 .num_reg_fields = ARRAY_SIZE(omap4_dispc_reg_fields),
4499 .overlay_caps = omap4_dispc_overlay_caps,
4500 .supported_color_modes = omap4_dispc_supported_color_modes,
4501 .num_mgrs = 4,
4502 .num_ovls = 4,
4503 .buffer_size_unit = 16,
4504 .burst_size_unit = 16,
4505 .gfx_fifo_workaround = true,
4506 .mstandby_workaround = true,
4507 .set_max_preload = true,
4508 .supports_sync_align = true,
4509 .has_writeback = true,
4510 .supports_double_pixel = true,
4511 .reverse_ilace_field_order = true,
4512 .has_gamma_table = true,
4513 .has_gamma_i734_bug = true,
4514};
4515
4516static irqreturn_t dispc_irq_handler(int irq, void *arg)
4517{
4518 struct dispc_device *dispc = arg;
4519
4520 if (!dispc->is_enabled)
4521 return IRQ_NONE;
4522
4523 return dispc->user_handler(irq, dispc->user_data);
4524}
4525
4526int dispc_request_irq(struct dispc_device *dispc, irq_handler_t handler,
4527 void *dev_id)
4528{
4529 int r;
4530
4531 if (dispc->user_handler != NULL)
4532 return -EBUSY;
4533
4534 dispc->user_handler = handler;
4535 dispc->user_data = dev_id;
4536
4537 /* ensure the dispc_irq_handler sees the values above */
4538 smp_wmb();
4539
4540 r = devm_request_irq(&dispc->pdev->dev, dispc->irq, dispc_irq_handler,
4541 IRQF_SHARED, "OMAP DISPC", dispc);
4542 if (r) {
4543 dispc->user_handler = NULL;
4544 dispc->user_data = NULL;
4545 }
4546
4547 return r;
4548}
4549
4550void dispc_free_irq(struct dispc_device *dispc, void *dev_id)
4551{
4552 devm_free_irq(&dispc->pdev->dev, dispc->irq, dispc);
4553
4554 dispc->user_handler = NULL;
4555 dispc->user_data = NULL;
4556}
4557
4558u32 dispc_get_memory_bandwidth_limit(struct dispc_device *dispc)
4559{
4560 u32 limit = 0;
4561
4562 /* Optional maximum memory bandwidth */
4563 of_property_read_u32(dispc->pdev->dev.of_node, "max-memory-bandwidth",
4564 &limit);
4565
4566 return limit;
4567}
4568
4569/*
4570 * Workaround for errata i734 in DSS dispc
4571 * - LCD1 Gamma Correction Is Not Working When GFX Pipe Is Disabled
4572 *
4573 * For gamma tables to work on LCD1 the GFX plane has to be used at
4574 * least once after DSS HW has come out of reset. The workaround
4575 * sets up a minimal LCD setup with GFX plane and waits for one
4576 * vertical sync irq before disabling the setup and continuing with
4577 * the context restore. The physical outputs are gated during the
4578 * operation. This workaround requires that gamma table's LOADMODE
4579 * is set to 0x2 in DISPC_CONTROL1 register.
4580 *
4581 * For details see:
4582 * OMAP543x Multimedia Device Silicon Revision 2.0 Silicon Errata
4583 * Literature Number: SWPZ037E
4584 * Or some other relevant errata document for the DSS IP version.
4585 */
4586
4587static const struct dispc_errata_i734_data {
4588 struct videomode vm;
4589 struct omap_overlay_info ovli;
4590 struct omap_overlay_manager_info mgri;
4591 struct dss_lcd_mgr_config lcd_conf;
4592} i734 = {
4593 .vm = {
4594 .hactive = 8, .vactive = 1,
4595 .pixelclock = 16000000,
4596 .hsync_len = 8, .hfront_porch = 4, .hback_porch = 4,
4597 .vsync_len = 1, .vfront_porch = 1, .vback_porch = 1,
4598
4599 .flags = DISPLAY_FLAGS_HSYNC_LOW | DISPLAY_FLAGS_VSYNC_LOW |
4600 DISPLAY_FLAGS_DE_HIGH | DISPLAY_FLAGS_SYNC_POSEDGE |
4601 DISPLAY_FLAGS_PIXDATA_POSEDGE,
4602 },
4603 .ovli = {
4604 .screen_width = 1,
4605 .width = 1, .height = 1,
4606 .fourcc = DRM_FORMAT_XRGB8888,
4607 .rotation = DRM_MODE_ROTATE_0,
4608 .rotation_type = OMAP_DSS_ROT_NONE,
4609 .pos_x = 0, .pos_y = 0,
4610 .out_width = 0, .out_height = 0,
4611 .global_alpha = 0xff,
4612 .pre_mult_alpha = 0,
4613 .zorder = 0,
4614 },
4615 .mgri = {
4616 .default_color = 0,
4617 .trans_enabled = false,
4618 .partial_alpha_enabled = false,
4619 .cpr_enable = false,
4620 },
4621 .lcd_conf = {
4622 .io_pad_mode = DSS_IO_PAD_MODE_BYPASS,
4623 .stallmode = false,
4624 .fifohandcheck = false,
4625 .clock_info = {
4626 .lck_div = 1,
4627 .pck_div = 2,
4628 },
4629 .video_port_width = 24,
4630 .lcden_sig_polarity = 0,
4631 },
4632};
4633
4634static struct i734_buf {
4635 size_t size;
4636 dma_addr_t paddr;
4637 void *vaddr;
4638} i734_buf;
4639
4640static int dispc_errata_i734_wa_init(struct dispc_device *dispc)
4641{
4642 if (!dispc->feat->has_gamma_i734_bug)
4643 return 0;
4644
4645 i734_buf.size = i734.ovli.width * i734.ovli.height *
4646 color_mode_to_bpp(i734.ovli.fourcc) / 8;
4647
4648 i734_buf.vaddr = dma_alloc_wc(&dispc->pdev->dev, i734_buf.size,
4649 &i734_buf.paddr, GFP_KERNEL);
4650 if (!i734_buf.vaddr) {
4651 dev_err(&dispc->pdev->dev, "%s: dma_alloc_wc failed\n",
4652 __func__);
4653 return -ENOMEM;
4654 }
4655
4656 return 0;
4657}
4658
4659static void dispc_errata_i734_wa_fini(struct dispc_device *dispc)
4660{
4661 if (!dispc->feat->has_gamma_i734_bug)
4662 return;
4663
4664 dma_free_wc(&dispc->pdev->dev, i734_buf.size, i734_buf.vaddr,
4665 i734_buf.paddr);
4666}
4667
4668static void dispc_errata_i734_wa(struct dispc_device *dispc)
4669{
4670 u32 framedone_irq = dispc_mgr_get_framedone_irq(dispc,
4671 OMAP_DSS_CHANNEL_LCD);
4672 struct omap_overlay_info ovli;
4673 struct dss_lcd_mgr_config lcd_conf;
4674 u32 gatestate;
4675 unsigned int count;
4676
4677 if (!dispc->feat->has_gamma_i734_bug)
4678 return;
4679
4680 gatestate = REG_GET(dispc, DISPC_CONFIG, 8, 4);
4681
4682 ovli = i734.ovli;
4683 ovli.paddr = i734_buf.paddr;
4684 lcd_conf = i734.lcd_conf;
4685
4686 /* Gate all LCD1 outputs */
4687 REG_FLD_MOD(dispc, DISPC_CONFIG, 0x1f, 8, 4);
4688
4689 /* Setup and enable GFX plane */
4690 dispc_ovl_setup(dispc, OMAP_DSS_GFX, &ovli, &i734.vm, false,
4691 OMAP_DSS_CHANNEL_LCD);
4692 dispc_ovl_enable(dispc, OMAP_DSS_GFX, true);
4693
4694 /* Set up and enable display manager for LCD1 */
4695 dispc_mgr_setup(dispc, OMAP_DSS_CHANNEL_LCD, &i734.mgri);
4696 dispc_calc_clock_rates(dispc, dss_get_dispc_clk_rate(dispc->dss),
4697 &lcd_conf.clock_info);
4698 dispc_mgr_set_lcd_config(dispc, OMAP_DSS_CHANNEL_LCD, &lcd_conf);
4699 dispc_mgr_set_timings(dispc, OMAP_DSS_CHANNEL_LCD, &i734.vm);
4700
4701 dispc_clear_irqstatus(dispc, framedone_irq);
4702
4703 /* Enable and shut the channel to produce just one frame */
4704 dispc_mgr_enable(dispc, OMAP_DSS_CHANNEL_LCD, true);
4705 dispc_mgr_enable(dispc, OMAP_DSS_CHANNEL_LCD, false);
4706
4707 /* Busy wait for framedone. We can't fiddle with irq handlers
4708 * in PM resume. Typically the loop runs less than 5 times and
4709 * waits less than a micro second.
4710 */
4711 count = 0;
4712 while (!(dispc_read_irqstatus(dispc) & framedone_irq)) {
4713 if (count++ > 10000) {
4714 dev_err(&dispc->pdev->dev, "%s: framedone timeout\n",
4715 __func__);
4716 break;
4717 }
4718 }
4719 dispc_ovl_enable(dispc, OMAP_DSS_GFX, false);
4720
4721 /* Clear all irq bits before continuing */
4722 dispc_clear_irqstatus(dispc, 0xffffffff);
4723
4724 /* Restore the original state to LCD1 output gates */
4725 REG_FLD_MOD(dispc, DISPC_CONFIG, gatestate, 8, 4);
4726}
4727
4728/* DISPC HW IP initialisation */
4729static const struct of_device_id dispc_of_match[] = {
4730 { .compatible = "ti,omap2-dispc", .data = &omap24xx_dispc_feats },
4731 { .compatible = "ti,omap3-dispc", .data = &omap36xx_dispc_feats },
4732 { .compatible = "ti,omap4-dispc", .data = &omap44xx_dispc_feats },
4733 { .compatible = "ti,omap5-dispc", .data = &omap54xx_dispc_feats },
4734 { .compatible = "ti,dra7-dispc", .data = &omap54xx_dispc_feats },
4735 {},
4736};
4737
4738static const struct soc_device_attribute dispc_soc_devices[] = {
4739 { .machine = "OMAP3[45]*",
4740 .revision = "ES[12].?", .data = &omap34xx_rev1_0_dispc_feats },
4741 { .machine = "OMAP3[45]*", .data = &omap34xx_rev3_0_dispc_feats },
4742 { .machine = "AM35*", .data = &omap34xx_rev3_0_dispc_feats },
4743 { .machine = "AM43*", .data = &am43xx_dispc_feats },
4744 { /* sentinel */ }
4745};
4746
4747static int dispc_bind(struct device *dev, struct device *master, void *data)
4748{
4749 struct platform_device *pdev = to_platform_device(dev);
4750 const struct soc_device_attribute *soc;
4751 struct dss_device *dss = dss_get_device(master);
4752 struct dispc_device *dispc;
4753 u32 rev;
4754 int r = 0;
4755 struct device_node *np = pdev->dev.of_node;
4756
4757 dispc = kzalloc(sizeof(*dispc), GFP_KERNEL);
4758 if (!dispc)
4759 return -ENOMEM;
4760
4761 dispc->pdev = pdev;
4762 platform_set_drvdata(pdev, dispc);
4763 dispc->dss = dss;
4764
4765 /*
4766 * The OMAP3-based models can't be told apart using the compatible
4767 * string, use SoC device matching.
4768 */
4769 soc = soc_device_match(dispc_soc_devices);
4770 if (soc)
4771 dispc->feat = soc->data;
4772 else
4773 dispc->feat = of_match_device(dispc_of_match, &pdev->dev)->data;
4774
4775 r = dispc_errata_i734_wa_init(dispc);
4776 if (r)
4777 goto err_free;
4778
4779 dispc->base = devm_platform_ioremap_resource(pdev, 0);
4780 if (IS_ERR(dispc->base)) {
4781 r = PTR_ERR(dispc->base);
4782 goto err_free;
4783 }
4784
4785 dispc->irq = platform_get_irq(dispc->pdev, 0);
4786 if (dispc->irq < 0) {
4787 DSSERR("platform_get_irq failed\n");
4788 r = -ENODEV;
4789 goto err_free;
4790 }
4791
4792 if (np && of_property_read_bool(np, "syscon-pol")) {
4793 dispc->syscon_pol = syscon_regmap_lookup_by_phandle(np, "syscon-pol");
4794 if (IS_ERR(dispc->syscon_pol)) {
4795 dev_err(&pdev->dev, "failed to get syscon-pol regmap\n");
4796 r = PTR_ERR(dispc->syscon_pol);
4797 goto err_free;
4798 }
4799
4800 if (of_property_read_u32_index(np, "syscon-pol", 1,
4801 &dispc->syscon_pol_offset)) {
4802 dev_err(&pdev->dev, "failed to get syscon-pol offset\n");
4803 r = -EINVAL;
4804 goto err_free;
4805 }
4806 }
4807
4808 r = dispc_init_gamma_tables(dispc);
4809 if (r)
4810 goto err_free;
4811
4812 pm_runtime_enable(&pdev->dev);
4813
4814 r = dispc_runtime_get(dispc);
4815 if (r)
4816 goto err_runtime_get;
4817
4818 _omap_dispc_initial_config(dispc);
4819
4820 rev = dispc_read_reg(dispc, DISPC_REVISION);
4821 dev_dbg(&pdev->dev, "OMAP DISPC rev %d.%d\n",
4822 FLD_GET(rev, 7, 4), FLD_GET(rev, 3, 0));
4823
4824 dispc_runtime_put(dispc);
4825
4826 dss->dispc = dispc;
4827
4828 dispc->debugfs = dss_debugfs_create_file(dss, "dispc", dispc_dump_regs,
4829 dispc);
4830
4831 return 0;
4832
4833err_runtime_get:
4834 pm_runtime_disable(&pdev->dev);
4835err_free:
4836 kfree(dispc);
4837 return r;
4838}
4839
4840static void dispc_unbind(struct device *dev, struct device *master, void *data)
4841{
4842 struct dispc_device *dispc = dev_get_drvdata(dev);
4843 struct dss_device *dss = dispc->dss;
4844
4845 dss_debugfs_remove_file(dispc->debugfs);
4846
4847 dss->dispc = NULL;
4848
4849 pm_runtime_disable(dev);
4850
4851 dispc_errata_i734_wa_fini(dispc);
4852
4853 kfree(dispc);
4854}
4855
4856static const struct component_ops dispc_component_ops = {
4857 .bind = dispc_bind,
4858 .unbind = dispc_unbind,
4859};
4860
4861static int dispc_probe(struct platform_device *pdev)
4862{
4863 return component_add(&pdev->dev, &dispc_component_ops);
4864}
4865
4866static int dispc_remove(struct platform_device *pdev)
4867{
4868 component_del(&pdev->dev, &dispc_component_ops);
4869 return 0;
4870}
4871
4872static __maybe_unused int dispc_runtime_suspend(struct device *dev)
4873{
4874 struct dispc_device *dispc = dev_get_drvdata(dev);
4875
4876 dispc->is_enabled = false;
4877 /* ensure the dispc_irq_handler sees the is_enabled value */
4878 smp_wmb();
4879 /* wait for current handler to finish before turning the DISPC off */
4880 synchronize_irq(dispc->irq);
4881
4882 dispc_save_context(dispc);
4883
4884 return 0;
4885}
4886
4887static __maybe_unused int dispc_runtime_resume(struct device *dev)
4888{
4889 struct dispc_device *dispc = dev_get_drvdata(dev);
4890
4891 /*
4892 * The reset value for load mode is 0 (OMAP_DSS_LOAD_CLUT_AND_FRAME)
4893 * but we always initialize it to 2 (OMAP_DSS_LOAD_FRAME_ONLY) in
4894 * _omap_dispc_initial_config(). We can thus use it to detect if
4895 * we have lost register context.
4896 */
4897 if (REG_GET(dispc, DISPC_CONFIG, 2, 1) != OMAP_DSS_LOAD_FRAME_ONLY) {
4898 _omap_dispc_initial_config(dispc);
4899
4900 dispc_errata_i734_wa(dispc);
4901
4902 dispc_restore_context(dispc);
4903
4904 dispc_restore_gamma_tables(dispc);
4905 }
4906
4907 dispc->is_enabled = true;
4908 /* ensure the dispc_irq_handler sees the is_enabled value */
4909 smp_wmb();
4910
4911 return 0;
4912}
4913
4914static const struct dev_pm_ops dispc_pm_ops = {
4915 SET_RUNTIME_PM_OPS(dispc_runtime_suspend, dispc_runtime_resume, NULL)
4916 SET_LATE_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, pm_runtime_force_resume)
4917};
4918
4919struct platform_driver omap_dispchw_driver = {
4920 .probe = dispc_probe,
4921 .remove = dispc_remove,
4922 .driver = {
4923 .name = "omapdss_dispc",
4924 .pm = &dispc_pm_ops,
4925 .of_match_table = dispc_of_match,
4926 .suppress_bind_attrs = true,
4927 },
4928};