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1/*
2 * linux/drivers/video/omap2/dss/venc.c
3 *
4 * Copyright (C) 2009 Nokia Corporation
5 * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
6 *
7 * VENC settings from TI's DSS driver
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License version 2 as published by
11 * the Free Software Foundation.
12 *
13 * This program is distributed in the hope that it will be useful, but WITHOUT
14 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
16 * more details.
17 *
18 * You should have received a copy of the GNU General Public License along with
19 * this program. If not, see <http://www.gnu.org/licenses/>.
20 */
21
22#define DSS_SUBSYS_NAME "VENC"
23
24#include <linux/kernel.h>
25#include <linux/module.h>
26#include <linux/clk.h>
27#include <linux/err.h>
28#include <linux/io.h>
29#include <linux/mutex.h>
30#include <linux/completion.h>
31#include <linux/delay.h>
32#include <linux/string.h>
33#include <linux/seq_file.h>
34#include <linux/platform_device.h>
35#include <linux/regulator/consumer.h>
36#include <linux/pm_runtime.h>
37#include <linux/of.h>
38#include <linux/component.h>
39
40#include "omapdss.h"
41#include "dss.h"
42#include "dss_features.h"
43
44/* Venc registers */
45#define VENC_REV_ID 0x00
46#define VENC_STATUS 0x04
47#define VENC_F_CONTROL 0x08
48#define VENC_VIDOUT_CTRL 0x10
49#define VENC_SYNC_CTRL 0x14
50#define VENC_LLEN 0x1C
51#define VENC_FLENS 0x20
52#define VENC_HFLTR_CTRL 0x24
53#define VENC_CC_CARR_WSS_CARR 0x28
54#define VENC_C_PHASE 0x2C
55#define VENC_GAIN_U 0x30
56#define VENC_GAIN_V 0x34
57#define VENC_GAIN_Y 0x38
58#define VENC_BLACK_LEVEL 0x3C
59#define VENC_BLANK_LEVEL 0x40
60#define VENC_X_COLOR 0x44
61#define VENC_M_CONTROL 0x48
62#define VENC_BSTAMP_WSS_DATA 0x4C
63#define VENC_S_CARR 0x50
64#define VENC_LINE21 0x54
65#define VENC_LN_SEL 0x58
66#define VENC_L21__WC_CTL 0x5C
67#define VENC_HTRIGGER_VTRIGGER 0x60
68#define VENC_SAVID__EAVID 0x64
69#define VENC_FLEN__FAL 0x68
70#define VENC_LAL__PHASE_RESET 0x6C
71#define VENC_HS_INT_START_STOP_X 0x70
72#define VENC_HS_EXT_START_STOP_X 0x74
73#define VENC_VS_INT_START_X 0x78
74#define VENC_VS_INT_STOP_X__VS_INT_START_Y 0x7C
75#define VENC_VS_INT_STOP_Y__VS_EXT_START_X 0x80
76#define VENC_VS_EXT_STOP_X__VS_EXT_START_Y 0x84
77#define VENC_VS_EXT_STOP_Y 0x88
78#define VENC_AVID_START_STOP_X 0x90
79#define VENC_AVID_START_STOP_Y 0x94
80#define VENC_FID_INT_START_X__FID_INT_START_Y 0xA0
81#define VENC_FID_INT_OFFSET_Y__FID_EXT_START_X 0xA4
82#define VENC_FID_EXT_START_Y__FID_EXT_OFFSET_Y 0xA8
83#define VENC_TVDETGP_INT_START_STOP_X 0xB0
84#define VENC_TVDETGP_INT_START_STOP_Y 0xB4
85#define VENC_GEN_CTRL 0xB8
86#define VENC_OUTPUT_CONTROL 0xC4
87#define VENC_OUTPUT_TEST 0xC8
88#define VENC_DAC_B__DAC_C 0xC8
89
90struct venc_config {
91 u32 f_control;
92 u32 vidout_ctrl;
93 u32 sync_ctrl;
94 u32 llen;
95 u32 flens;
96 u32 hfltr_ctrl;
97 u32 cc_carr_wss_carr;
98 u32 c_phase;
99 u32 gain_u;
100 u32 gain_v;
101 u32 gain_y;
102 u32 black_level;
103 u32 blank_level;
104 u32 x_color;
105 u32 m_control;
106 u32 bstamp_wss_data;
107 u32 s_carr;
108 u32 line21;
109 u32 ln_sel;
110 u32 l21__wc_ctl;
111 u32 htrigger_vtrigger;
112 u32 savid__eavid;
113 u32 flen__fal;
114 u32 lal__phase_reset;
115 u32 hs_int_start_stop_x;
116 u32 hs_ext_start_stop_x;
117 u32 vs_int_start_x;
118 u32 vs_int_stop_x__vs_int_start_y;
119 u32 vs_int_stop_y__vs_ext_start_x;
120 u32 vs_ext_stop_x__vs_ext_start_y;
121 u32 vs_ext_stop_y;
122 u32 avid_start_stop_x;
123 u32 avid_start_stop_y;
124 u32 fid_int_start_x__fid_int_start_y;
125 u32 fid_int_offset_y__fid_ext_start_x;
126 u32 fid_ext_start_y__fid_ext_offset_y;
127 u32 tvdetgp_int_start_stop_x;
128 u32 tvdetgp_int_start_stop_y;
129 u32 gen_ctrl;
130};
131
132/* from TRM */
133static const struct venc_config venc_config_pal_trm = {
134 .f_control = 0,
135 .vidout_ctrl = 1,
136 .sync_ctrl = 0x40,
137 .llen = 0x35F, /* 863 */
138 .flens = 0x270, /* 624 */
139 .hfltr_ctrl = 0,
140 .cc_carr_wss_carr = 0x2F7225ED,
141 .c_phase = 0,
142 .gain_u = 0x111,
143 .gain_v = 0x181,
144 .gain_y = 0x140,
145 .black_level = 0x3B,
146 .blank_level = 0x3B,
147 .x_color = 0x7,
148 .m_control = 0x2,
149 .bstamp_wss_data = 0x3F,
150 .s_carr = 0x2A098ACB,
151 .line21 = 0,
152 .ln_sel = 0x01290015,
153 .l21__wc_ctl = 0x0000F603,
154 .htrigger_vtrigger = 0,
155
156 .savid__eavid = 0x06A70108,
157 .flen__fal = 0x00180270,
158 .lal__phase_reset = 0x00040135,
159 .hs_int_start_stop_x = 0x00880358,
160 .hs_ext_start_stop_x = 0x000F035F,
161 .vs_int_start_x = 0x01A70000,
162 .vs_int_stop_x__vs_int_start_y = 0x000001A7,
163 .vs_int_stop_y__vs_ext_start_x = 0x01AF0000,
164 .vs_ext_stop_x__vs_ext_start_y = 0x000101AF,
165 .vs_ext_stop_y = 0x00000025,
166 .avid_start_stop_x = 0x03530083,
167 .avid_start_stop_y = 0x026C002E,
168 .fid_int_start_x__fid_int_start_y = 0x0001008A,
169 .fid_int_offset_y__fid_ext_start_x = 0x002E0138,
170 .fid_ext_start_y__fid_ext_offset_y = 0x01380001,
171
172 .tvdetgp_int_start_stop_x = 0x00140001,
173 .tvdetgp_int_start_stop_y = 0x00010001,
174 .gen_ctrl = 0x00FF0000,
175};
176
177/* from TRM */
178static const struct venc_config venc_config_ntsc_trm = {
179 .f_control = 0,
180 .vidout_ctrl = 1,
181 .sync_ctrl = 0x8040,
182 .llen = 0x359,
183 .flens = 0x20C,
184 .hfltr_ctrl = 0,
185 .cc_carr_wss_carr = 0x043F2631,
186 .c_phase = 0,
187 .gain_u = 0x102,
188 .gain_v = 0x16C,
189 .gain_y = 0x12F,
190 .black_level = 0x43,
191 .blank_level = 0x38,
192 .x_color = 0x7,
193 .m_control = 0x1,
194 .bstamp_wss_data = 0x38,
195 .s_carr = 0x21F07C1F,
196 .line21 = 0,
197 .ln_sel = 0x01310011,
198 .l21__wc_ctl = 0x0000F003,
199 .htrigger_vtrigger = 0,
200
201 .savid__eavid = 0x069300F4,
202 .flen__fal = 0x0016020C,
203 .lal__phase_reset = 0x00060107,
204 .hs_int_start_stop_x = 0x008E0350,
205 .hs_ext_start_stop_x = 0x000F0359,
206 .vs_int_start_x = 0x01A00000,
207 .vs_int_stop_x__vs_int_start_y = 0x020701A0,
208 .vs_int_stop_y__vs_ext_start_x = 0x01AC0024,
209 .vs_ext_stop_x__vs_ext_start_y = 0x020D01AC,
210 .vs_ext_stop_y = 0x00000006,
211 .avid_start_stop_x = 0x03480078,
212 .avid_start_stop_y = 0x02060024,
213 .fid_int_start_x__fid_int_start_y = 0x0001008A,
214 .fid_int_offset_y__fid_ext_start_x = 0x01AC0106,
215 .fid_ext_start_y__fid_ext_offset_y = 0x01060006,
216
217 .tvdetgp_int_start_stop_x = 0x00140001,
218 .tvdetgp_int_start_stop_y = 0x00010001,
219 .gen_ctrl = 0x00F90000,
220};
221
222static const struct venc_config venc_config_pal_bdghi = {
223 .f_control = 0,
224 .vidout_ctrl = 0,
225 .sync_ctrl = 0,
226 .hfltr_ctrl = 0,
227 .x_color = 0,
228 .line21 = 0,
229 .ln_sel = 21,
230 .htrigger_vtrigger = 0,
231 .tvdetgp_int_start_stop_x = 0x00140001,
232 .tvdetgp_int_start_stop_y = 0x00010001,
233 .gen_ctrl = 0x00FB0000,
234
235 .llen = 864-1,
236 .flens = 625-1,
237 .cc_carr_wss_carr = 0x2F7625ED,
238 .c_phase = 0xDF,
239 .gain_u = 0x111,
240 .gain_v = 0x181,
241 .gain_y = 0x140,
242 .black_level = 0x3e,
243 .blank_level = 0x3e,
244 .m_control = 0<<2 | 1<<1,
245 .bstamp_wss_data = 0x42,
246 .s_carr = 0x2a098acb,
247 .l21__wc_ctl = 0<<13 | 0x16<<8 | 0<<0,
248 .savid__eavid = 0x06A70108,
249 .flen__fal = 23<<16 | 624<<0,
250 .lal__phase_reset = 2<<17 | 310<<0,
251 .hs_int_start_stop_x = 0x00920358,
252 .hs_ext_start_stop_x = 0x000F035F,
253 .vs_int_start_x = 0x1a7<<16,
254 .vs_int_stop_x__vs_int_start_y = 0x000601A7,
255 .vs_int_stop_y__vs_ext_start_x = 0x01AF0036,
256 .vs_ext_stop_x__vs_ext_start_y = 0x27101af,
257 .vs_ext_stop_y = 0x05,
258 .avid_start_stop_x = 0x03530082,
259 .avid_start_stop_y = 0x0270002E,
260 .fid_int_start_x__fid_int_start_y = 0x0005008A,
261 .fid_int_offset_y__fid_ext_start_x = 0x002E0138,
262 .fid_ext_start_y__fid_ext_offset_y = 0x01380005,
263};
264
265const struct videomode omap_dss_pal_vm = {
266 .hactive = 720,
267 .vactive = 574,
268 .pixelclock = 13500000,
269 .hsync_len = 64,
270 .hfront_porch = 12,
271 .hback_porch = 68,
272 .vsync_len = 5,
273 .vfront_porch = 5,
274 .vback_porch = 41,
275
276 .flags = DISPLAY_FLAGS_INTERLACED | DISPLAY_FLAGS_HSYNC_LOW |
277 DISPLAY_FLAGS_VSYNC_LOW | DISPLAY_FLAGS_DE_HIGH |
278 DISPLAY_FLAGS_PIXDATA_POSEDGE |
279 DISPLAY_FLAGS_SYNC_NEGEDGE,
280};
281EXPORT_SYMBOL(omap_dss_pal_vm);
282
283const struct videomode omap_dss_ntsc_vm = {
284 .hactive = 720,
285 .vactive = 482,
286 .pixelclock = 13500000,
287 .hsync_len = 64,
288 .hfront_porch = 16,
289 .hback_porch = 58,
290 .vsync_len = 6,
291 .vfront_porch = 6,
292 .vback_porch = 31,
293
294 .flags = DISPLAY_FLAGS_INTERLACED | DISPLAY_FLAGS_HSYNC_LOW |
295 DISPLAY_FLAGS_VSYNC_LOW | DISPLAY_FLAGS_DE_HIGH |
296 DISPLAY_FLAGS_PIXDATA_POSEDGE |
297 DISPLAY_FLAGS_SYNC_NEGEDGE,
298};
299EXPORT_SYMBOL(omap_dss_ntsc_vm);
300
301static struct {
302 struct platform_device *pdev;
303 void __iomem *base;
304 struct mutex venc_lock;
305 u32 wss_data;
306 struct regulator *vdda_dac_reg;
307
308 struct clk *tv_dac_clk;
309
310 struct videomode vm;
311 enum omap_dss_venc_type type;
312 bool invert_polarity;
313
314 struct omap_dss_device output;
315} venc;
316
317static inline void venc_write_reg(int idx, u32 val)
318{
319 __raw_writel(val, venc.base + idx);
320}
321
322static inline u32 venc_read_reg(int idx)
323{
324 u32 l = __raw_readl(venc.base + idx);
325 return l;
326}
327
328static void venc_write_config(const struct venc_config *config)
329{
330 DSSDBG("write venc conf\n");
331
332 venc_write_reg(VENC_LLEN, config->llen);
333 venc_write_reg(VENC_FLENS, config->flens);
334 venc_write_reg(VENC_CC_CARR_WSS_CARR, config->cc_carr_wss_carr);
335 venc_write_reg(VENC_C_PHASE, config->c_phase);
336 venc_write_reg(VENC_GAIN_U, config->gain_u);
337 venc_write_reg(VENC_GAIN_V, config->gain_v);
338 venc_write_reg(VENC_GAIN_Y, config->gain_y);
339 venc_write_reg(VENC_BLACK_LEVEL, config->black_level);
340 venc_write_reg(VENC_BLANK_LEVEL, config->blank_level);
341 venc_write_reg(VENC_M_CONTROL, config->m_control);
342 venc_write_reg(VENC_BSTAMP_WSS_DATA, config->bstamp_wss_data |
343 venc.wss_data);
344 venc_write_reg(VENC_S_CARR, config->s_carr);
345 venc_write_reg(VENC_L21__WC_CTL, config->l21__wc_ctl);
346 venc_write_reg(VENC_SAVID__EAVID, config->savid__eavid);
347 venc_write_reg(VENC_FLEN__FAL, config->flen__fal);
348 venc_write_reg(VENC_LAL__PHASE_RESET, config->lal__phase_reset);
349 venc_write_reg(VENC_HS_INT_START_STOP_X, config->hs_int_start_stop_x);
350 venc_write_reg(VENC_HS_EXT_START_STOP_X, config->hs_ext_start_stop_x);
351 venc_write_reg(VENC_VS_INT_START_X, config->vs_int_start_x);
352 venc_write_reg(VENC_VS_INT_STOP_X__VS_INT_START_Y,
353 config->vs_int_stop_x__vs_int_start_y);
354 venc_write_reg(VENC_VS_INT_STOP_Y__VS_EXT_START_X,
355 config->vs_int_stop_y__vs_ext_start_x);
356 venc_write_reg(VENC_VS_EXT_STOP_X__VS_EXT_START_Y,
357 config->vs_ext_stop_x__vs_ext_start_y);
358 venc_write_reg(VENC_VS_EXT_STOP_Y, config->vs_ext_stop_y);
359 venc_write_reg(VENC_AVID_START_STOP_X, config->avid_start_stop_x);
360 venc_write_reg(VENC_AVID_START_STOP_Y, config->avid_start_stop_y);
361 venc_write_reg(VENC_FID_INT_START_X__FID_INT_START_Y,
362 config->fid_int_start_x__fid_int_start_y);
363 venc_write_reg(VENC_FID_INT_OFFSET_Y__FID_EXT_START_X,
364 config->fid_int_offset_y__fid_ext_start_x);
365 venc_write_reg(VENC_FID_EXT_START_Y__FID_EXT_OFFSET_Y,
366 config->fid_ext_start_y__fid_ext_offset_y);
367
368 venc_write_reg(VENC_DAC_B__DAC_C, venc_read_reg(VENC_DAC_B__DAC_C));
369 venc_write_reg(VENC_VIDOUT_CTRL, config->vidout_ctrl);
370 venc_write_reg(VENC_HFLTR_CTRL, config->hfltr_ctrl);
371 venc_write_reg(VENC_X_COLOR, config->x_color);
372 venc_write_reg(VENC_LINE21, config->line21);
373 venc_write_reg(VENC_LN_SEL, config->ln_sel);
374 venc_write_reg(VENC_HTRIGGER_VTRIGGER, config->htrigger_vtrigger);
375 venc_write_reg(VENC_TVDETGP_INT_START_STOP_X,
376 config->tvdetgp_int_start_stop_x);
377 venc_write_reg(VENC_TVDETGP_INT_START_STOP_Y,
378 config->tvdetgp_int_start_stop_y);
379 venc_write_reg(VENC_GEN_CTRL, config->gen_ctrl);
380 venc_write_reg(VENC_F_CONTROL, config->f_control);
381 venc_write_reg(VENC_SYNC_CTRL, config->sync_ctrl);
382}
383
384static void venc_reset(void)
385{
386 int t = 1000;
387
388 venc_write_reg(VENC_F_CONTROL, 1<<8);
389 while (venc_read_reg(VENC_F_CONTROL) & (1<<8)) {
390 if (--t == 0) {
391 DSSERR("Failed to reset venc\n");
392 return;
393 }
394 }
395
396#ifdef CONFIG_OMAP2_DSS_SLEEP_AFTER_VENC_RESET
397 /* the magical sleep that makes things work */
398 /* XXX more info? What bug this circumvents? */
399 msleep(20);
400#endif
401}
402
403static int venc_runtime_get(void)
404{
405 int r;
406
407 DSSDBG("venc_runtime_get\n");
408
409 r = pm_runtime_get_sync(&venc.pdev->dev);
410 WARN_ON(r < 0);
411 return r < 0 ? r : 0;
412}
413
414static void venc_runtime_put(void)
415{
416 int r;
417
418 DSSDBG("venc_runtime_put\n");
419
420 r = pm_runtime_put_sync(&venc.pdev->dev);
421 WARN_ON(r < 0 && r != -ENOSYS);
422}
423
424static const struct venc_config *venc_timings_to_config(struct videomode *vm)
425{
426 if (memcmp(&omap_dss_pal_vm, vm, sizeof(*vm)) == 0)
427 return &venc_config_pal_trm;
428
429 if (memcmp(&omap_dss_ntsc_vm, vm, sizeof(*vm)) == 0)
430 return &venc_config_ntsc_trm;
431
432 BUG();
433 return NULL;
434}
435
436static int venc_power_on(struct omap_dss_device *dssdev)
437{
438 enum omap_channel channel = dssdev->dispc_channel;
439 u32 l;
440 int r;
441
442 r = venc_runtime_get();
443 if (r)
444 goto err0;
445
446 venc_reset();
447 venc_write_config(venc_timings_to_config(&venc.vm));
448
449 dss_set_venc_output(venc.type);
450 dss_set_dac_pwrdn_bgz(1);
451
452 l = 0;
453
454 if (venc.type == OMAP_DSS_VENC_TYPE_COMPOSITE)
455 l |= 1 << 1;
456 else /* S-Video */
457 l |= (1 << 0) | (1 << 2);
458
459 if (venc.invert_polarity == false)
460 l |= 1 << 3;
461
462 venc_write_reg(VENC_OUTPUT_CONTROL, l);
463
464 dss_mgr_set_timings(channel, &venc.vm);
465
466 r = regulator_enable(venc.vdda_dac_reg);
467 if (r)
468 goto err1;
469
470 r = dss_mgr_enable(channel);
471 if (r)
472 goto err2;
473
474 return 0;
475
476err2:
477 regulator_disable(venc.vdda_dac_reg);
478err1:
479 venc_write_reg(VENC_OUTPUT_CONTROL, 0);
480 dss_set_dac_pwrdn_bgz(0);
481
482 venc_runtime_put();
483err0:
484 return r;
485}
486
487static void venc_power_off(struct omap_dss_device *dssdev)
488{
489 enum omap_channel channel = dssdev->dispc_channel;
490
491 venc_write_reg(VENC_OUTPUT_CONTROL, 0);
492 dss_set_dac_pwrdn_bgz(0);
493
494 dss_mgr_disable(channel);
495
496 regulator_disable(venc.vdda_dac_reg);
497
498 venc_runtime_put();
499}
500
501static int venc_display_enable(struct omap_dss_device *dssdev)
502{
503 struct omap_dss_device *out = &venc.output;
504 int r;
505
506 DSSDBG("venc_display_enable\n");
507
508 mutex_lock(&venc.venc_lock);
509
510 if (!out->dispc_channel_connected) {
511 DSSERR("Failed to enable display: no output/manager\n");
512 r = -ENODEV;
513 goto err0;
514 }
515
516 r = venc_power_on(dssdev);
517 if (r)
518 goto err0;
519
520 venc.wss_data = 0;
521
522 mutex_unlock(&venc.venc_lock);
523
524 return 0;
525err0:
526 mutex_unlock(&venc.venc_lock);
527 return r;
528}
529
530static void venc_display_disable(struct omap_dss_device *dssdev)
531{
532 DSSDBG("venc_display_disable\n");
533
534 mutex_lock(&venc.venc_lock);
535
536 venc_power_off(dssdev);
537
538 mutex_unlock(&venc.venc_lock);
539}
540
541static void venc_set_timings(struct omap_dss_device *dssdev,
542 struct videomode *vm)
543{
544 DSSDBG("venc_set_timings\n");
545
546 mutex_lock(&venc.venc_lock);
547
548 /* Reset WSS data when the TV standard changes. */
549 if (memcmp(&venc.vm, vm, sizeof(*vm)))
550 venc.wss_data = 0;
551
552 venc.vm = *vm;
553
554 dispc_set_tv_pclk(13500000);
555
556 mutex_unlock(&venc.venc_lock);
557}
558
559static int venc_check_timings(struct omap_dss_device *dssdev,
560 struct videomode *vm)
561{
562 DSSDBG("venc_check_timings\n");
563
564 if (memcmp(&omap_dss_pal_vm, vm, sizeof(*vm)) == 0)
565 return 0;
566
567 if (memcmp(&omap_dss_ntsc_vm, vm, sizeof(*vm)) == 0)
568 return 0;
569
570 return -EINVAL;
571}
572
573static void venc_get_timings(struct omap_dss_device *dssdev,
574 struct videomode *vm)
575{
576 mutex_lock(&venc.venc_lock);
577
578 *vm = venc.vm;
579
580 mutex_unlock(&venc.venc_lock);
581}
582
583static u32 venc_get_wss(struct omap_dss_device *dssdev)
584{
585 /* Invert due to VENC_L21_WC_CTL:INV=1 */
586 return (venc.wss_data >> 8) ^ 0xfffff;
587}
588
589static int venc_set_wss(struct omap_dss_device *dssdev, u32 wss)
590{
591 const struct venc_config *config;
592 int r;
593
594 DSSDBG("venc_set_wss\n");
595
596 mutex_lock(&venc.venc_lock);
597
598 config = venc_timings_to_config(&venc.vm);
599
600 /* Invert due to VENC_L21_WC_CTL:INV=1 */
601 venc.wss_data = (wss ^ 0xfffff) << 8;
602
603 r = venc_runtime_get();
604 if (r)
605 goto err;
606
607 venc_write_reg(VENC_BSTAMP_WSS_DATA, config->bstamp_wss_data |
608 venc.wss_data);
609
610 venc_runtime_put();
611
612err:
613 mutex_unlock(&venc.venc_lock);
614
615 return r;
616}
617
618static void venc_set_type(struct omap_dss_device *dssdev,
619 enum omap_dss_venc_type type)
620{
621 mutex_lock(&venc.venc_lock);
622
623 venc.type = type;
624
625 mutex_unlock(&venc.venc_lock);
626}
627
628static void venc_invert_vid_out_polarity(struct omap_dss_device *dssdev,
629 bool invert_polarity)
630{
631 mutex_lock(&venc.venc_lock);
632
633 venc.invert_polarity = invert_polarity;
634
635 mutex_unlock(&venc.venc_lock);
636}
637
638static int venc_init_regulator(void)
639{
640 struct regulator *vdda_dac;
641
642 if (venc.vdda_dac_reg != NULL)
643 return 0;
644
645 if (venc.pdev->dev.of_node)
646 vdda_dac = devm_regulator_get(&venc.pdev->dev, "vdda");
647 else
648 vdda_dac = devm_regulator_get(&venc.pdev->dev, "vdda_dac");
649
650 if (IS_ERR(vdda_dac)) {
651 if (PTR_ERR(vdda_dac) != -EPROBE_DEFER)
652 DSSERR("can't get VDDA_DAC regulator\n");
653 return PTR_ERR(vdda_dac);
654 }
655
656 venc.vdda_dac_reg = vdda_dac;
657
658 return 0;
659}
660
661static void venc_dump_regs(struct seq_file *s)
662{
663#define DUMPREG(r) seq_printf(s, "%-35s %08x\n", #r, venc_read_reg(r))
664
665 if (venc_runtime_get())
666 return;
667
668 DUMPREG(VENC_F_CONTROL);
669 DUMPREG(VENC_VIDOUT_CTRL);
670 DUMPREG(VENC_SYNC_CTRL);
671 DUMPREG(VENC_LLEN);
672 DUMPREG(VENC_FLENS);
673 DUMPREG(VENC_HFLTR_CTRL);
674 DUMPREG(VENC_CC_CARR_WSS_CARR);
675 DUMPREG(VENC_C_PHASE);
676 DUMPREG(VENC_GAIN_U);
677 DUMPREG(VENC_GAIN_V);
678 DUMPREG(VENC_GAIN_Y);
679 DUMPREG(VENC_BLACK_LEVEL);
680 DUMPREG(VENC_BLANK_LEVEL);
681 DUMPREG(VENC_X_COLOR);
682 DUMPREG(VENC_M_CONTROL);
683 DUMPREG(VENC_BSTAMP_WSS_DATA);
684 DUMPREG(VENC_S_CARR);
685 DUMPREG(VENC_LINE21);
686 DUMPREG(VENC_LN_SEL);
687 DUMPREG(VENC_L21__WC_CTL);
688 DUMPREG(VENC_HTRIGGER_VTRIGGER);
689 DUMPREG(VENC_SAVID__EAVID);
690 DUMPREG(VENC_FLEN__FAL);
691 DUMPREG(VENC_LAL__PHASE_RESET);
692 DUMPREG(VENC_HS_INT_START_STOP_X);
693 DUMPREG(VENC_HS_EXT_START_STOP_X);
694 DUMPREG(VENC_VS_INT_START_X);
695 DUMPREG(VENC_VS_INT_STOP_X__VS_INT_START_Y);
696 DUMPREG(VENC_VS_INT_STOP_Y__VS_EXT_START_X);
697 DUMPREG(VENC_VS_EXT_STOP_X__VS_EXT_START_Y);
698 DUMPREG(VENC_VS_EXT_STOP_Y);
699 DUMPREG(VENC_AVID_START_STOP_X);
700 DUMPREG(VENC_AVID_START_STOP_Y);
701 DUMPREG(VENC_FID_INT_START_X__FID_INT_START_Y);
702 DUMPREG(VENC_FID_INT_OFFSET_Y__FID_EXT_START_X);
703 DUMPREG(VENC_FID_EXT_START_Y__FID_EXT_OFFSET_Y);
704 DUMPREG(VENC_TVDETGP_INT_START_STOP_X);
705 DUMPREG(VENC_TVDETGP_INT_START_STOP_Y);
706 DUMPREG(VENC_GEN_CTRL);
707 DUMPREG(VENC_OUTPUT_CONTROL);
708 DUMPREG(VENC_OUTPUT_TEST);
709
710 venc_runtime_put();
711
712#undef DUMPREG
713}
714
715static int venc_get_clocks(struct platform_device *pdev)
716{
717 struct clk *clk;
718
719 if (dss_has_feature(FEAT_VENC_REQUIRES_TV_DAC_CLK)) {
720 clk = devm_clk_get(&pdev->dev, "tv_dac_clk");
721 if (IS_ERR(clk)) {
722 DSSERR("can't get tv_dac_clk\n");
723 return PTR_ERR(clk);
724 }
725 } else {
726 clk = NULL;
727 }
728
729 venc.tv_dac_clk = clk;
730
731 return 0;
732}
733
734static int venc_connect(struct omap_dss_device *dssdev,
735 struct omap_dss_device *dst)
736{
737 enum omap_channel channel = dssdev->dispc_channel;
738 int r;
739
740 r = venc_init_regulator();
741 if (r)
742 return r;
743
744 r = dss_mgr_connect(channel, dssdev);
745 if (r)
746 return r;
747
748 r = omapdss_output_set_device(dssdev, dst);
749 if (r) {
750 DSSERR("failed to connect output to new device: %s\n",
751 dst->name);
752 dss_mgr_disconnect(channel, dssdev);
753 return r;
754 }
755
756 return 0;
757}
758
759static void venc_disconnect(struct omap_dss_device *dssdev,
760 struct omap_dss_device *dst)
761{
762 enum omap_channel channel = dssdev->dispc_channel;
763
764 WARN_ON(dst != dssdev->dst);
765
766 if (dst != dssdev->dst)
767 return;
768
769 omapdss_output_unset_device(dssdev);
770
771 dss_mgr_disconnect(channel, dssdev);
772}
773
774static const struct omapdss_atv_ops venc_ops = {
775 .connect = venc_connect,
776 .disconnect = venc_disconnect,
777
778 .enable = venc_display_enable,
779 .disable = venc_display_disable,
780
781 .check_timings = venc_check_timings,
782 .set_timings = venc_set_timings,
783 .get_timings = venc_get_timings,
784
785 .set_type = venc_set_type,
786 .invert_vid_out_polarity = venc_invert_vid_out_polarity,
787
788 .set_wss = venc_set_wss,
789 .get_wss = venc_get_wss,
790};
791
792static void venc_init_output(struct platform_device *pdev)
793{
794 struct omap_dss_device *out = &venc.output;
795
796 out->dev = &pdev->dev;
797 out->id = OMAP_DSS_OUTPUT_VENC;
798 out->output_type = OMAP_DISPLAY_TYPE_VENC;
799 out->name = "venc.0";
800 out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT;
801 out->ops.atv = &venc_ops;
802 out->owner = THIS_MODULE;
803
804 omapdss_register_output(out);
805}
806
807static void venc_uninit_output(struct platform_device *pdev)
808{
809 struct omap_dss_device *out = &venc.output;
810
811 omapdss_unregister_output(out);
812}
813
814static int venc_probe_of(struct platform_device *pdev)
815{
816 struct device_node *node = pdev->dev.of_node;
817 struct device_node *ep;
818 u32 channels;
819 int r;
820
821 ep = omapdss_of_get_first_endpoint(node);
822 if (!ep)
823 return 0;
824
825 venc.invert_polarity = of_property_read_bool(ep, "ti,invert-polarity");
826
827 r = of_property_read_u32(ep, "ti,channels", &channels);
828 if (r) {
829 dev_err(&pdev->dev,
830 "failed to read property 'ti,channels': %d\n", r);
831 goto err;
832 }
833
834 switch (channels) {
835 case 1:
836 venc.type = OMAP_DSS_VENC_TYPE_COMPOSITE;
837 break;
838 case 2:
839 venc.type = OMAP_DSS_VENC_TYPE_SVIDEO;
840 break;
841 default:
842 dev_err(&pdev->dev, "bad channel propert '%d'\n", channels);
843 r = -EINVAL;
844 goto err;
845 }
846
847 of_node_put(ep);
848
849 return 0;
850err:
851 of_node_put(ep);
852
853 return 0;
854}
855
856/* VENC HW IP initialisation */
857static int venc_bind(struct device *dev, struct device *master, void *data)
858{
859 struct platform_device *pdev = to_platform_device(dev);
860 u8 rev_id;
861 struct resource *venc_mem;
862 int r;
863
864 venc.pdev = pdev;
865
866 mutex_init(&venc.venc_lock);
867
868 venc.wss_data = 0;
869
870 venc_mem = platform_get_resource(venc.pdev, IORESOURCE_MEM, 0);
871 if (!venc_mem) {
872 DSSERR("can't get IORESOURCE_MEM VENC\n");
873 return -EINVAL;
874 }
875
876 venc.base = devm_ioremap(&pdev->dev, venc_mem->start,
877 resource_size(venc_mem));
878 if (!venc.base) {
879 DSSERR("can't ioremap VENC\n");
880 return -ENOMEM;
881 }
882
883 r = venc_get_clocks(pdev);
884 if (r)
885 return r;
886
887 pm_runtime_enable(&pdev->dev);
888
889 r = venc_runtime_get();
890 if (r)
891 goto err_runtime_get;
892
893 rev_id = (u8)(venc_read_reg(VENC_REV_ID) & 0xff);
894 dev_dbg(&pdev->dev, "OMAP VENC rev %d\n", rev_id);
895
896 venc_runtime_put();
897
898 if (pdev->dev.of_node) {
899 r = venc_probe_of(pdev);
900 if (r) {
901 DSSERR("Invalid DT data\n");
902 goto err_probe_of;
903 }
904 }
905
906 dss_debugfs_create_file("venc", venc_dump_regs);
907
908 venc_init_output(pdev);
909
910 return 0;
911
912err_probe_of:
913err_runtime_get:
914 pm_runtime_disable(&pdev->dev);
915 return r;
916}
917
918static void venc_unbind(struct device *dev, struct device *master, void *data)
919{
920 struct platform_device *pdev = to_platform_device(dev);
921
922 venc_uninit_output(pdev);
923
924 pm_runtime_disable(&pdev->dev);
925}
926
927static const struct component_ops venc_component_ops = {
928 .bind = venc_bind,
929 .unbind = venc_unbind,
930};
931
932static int venc_probe(struct platform_device *pdev)
933{
934 return component_add(&pdev->dev, &venc_component_ops);
935}
936
937static int venc_remove(struct platform_device *pdev)
938{
939 component_del(&pdev->dev, &venc_component_ops);
940 return 0;
941}
942
943static int venc_runtime_suspend(struct device *dev)
944{
945 if (venc.tv_dac_clk)
946 clk_disable_unprepare(venc.tv_dac_clk);
947
948 dispc_runtime_put();
949
950 return 0;
951}
952
953static int venc_runtime_resume(struct device *dev)
954{
955 int r;
956
957 r = dispc_runtime_get();
958 if (r < 0)
959 return r;
960
961 if (venc.tv_dac_clk)
962 clk_prepare_enable(venc.tv_dac_clk);
963
964 return 0;
965}
966
967static const struct dev_pm_ops venc_pm_ops = {
968 .runtime_suspend = venc_runtime_suspend,
969 .runtime_resume = venc_runtime_resume,
970};
971
972static const struct of_device_id venc_of_match[] = {
973 { .compatible = "ti,omap2-venc", },
974 { .compatible = "ti,omap3-venc", },
975 { .compatible = "ti,omap4-venc", },
976 {},
977};
978
979static struct platform_driver omap_venchw_driver = {
980 .probe = venc_probe,
981 .remove = venc_remove,
982 .driver = {
983 .name = "omapdss_venc",
984 .pm = &venc_pm_ops,
985 .of_match_table = venc_of_match,
986 .suppress_bind_attrs = true,
987 },
988};
989
990int __init venc_init_platform_driver(void)
991{
992 return platform_driver_register(&omap_venchw_driver);
993}
994
995void venc_uninit_platform_driver(void)
996{
997 platform_driver_unregister(&omap_venchw_driver);
998}