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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (c) 2014 MediaTek Inc.
4 * Author: Jie Qiu <jie.qiu@mediatek.com>
5 */
6
7#include <linux/clk.h>
8#include <linux/component.h>
9#include <linux/interrupt.h>
10#include <linux/kernel.h>
11#include <linux/of.h>
12#include <linux/of_device.h>
13#include <linux/of_graph.h>
14#include <linux/platform_device.h>
15#include <linux/types.h>
16
17#include <video/videomode.h>
18
19#include <drm/drm_atomic_helper.h>
20#include <drm/drm_crtc.h>
21#include <drm/drm_of.h>
22
23#include "mtk_dpi_regs.h"
24#include "mtk_drm_ddp_comp.h"
25
26enum mtk_dpi_out_bit_num {
27 MTK_DPI_OUT_BIT_NUM_8BITS,
28 MTK_DPI_OUT_BIT_NUM_10BITS,
29 MTK_DPI_OUT_BIT_NUM_12BITS,
30 MTK_DPI_OUT_BIT_NUM_16BITS
31};
32
33enum mtk_dpi_out_yc_map {
34 MTK_DPI_OUT_YC_MAP_RGB,
35 MTK_DPI_OUT_YC_MAP_CYCY,
36 MTK_DPI_OUT_YC_MAP_YCYC,
37 MTK_DPI_OUT_YC_MAP_CY,
38 MTK_DPI_OUT_YC_MAP_YC
39};
40
41enum mtk_dpi_out_channel_swap {
42 MTK_DPI_OUT_CHANNEL_SWAP_RGB,
43 MTK_DPI_OUT_CHANNEL_SWAP_GBR,
44 MTK_DPI_OUT_CHANNEL_SWAP_BRG,
45 MTK_DPI_OUT_CHANNEL_SWAP_RBG,
46 MTK_DPI_OUT_CHANNEL_SWAP_GRB,
47 MTK_DPI_OUT_CHANNEL_SWAP_BGR
48};
49
50enum mtk_dpi_out_color_format {
51 MTK_DPI_COLOR_FORMAT_RGB,
52 MTK_DPI_COLOR_FORMAT_RGB_FULL,
53 MTK_DPI_COLOR_FORMAT_YCBCR_444,
54 MTK_DPI_COLOR_FORMAT_YCBCR_422,
55 MTK_DPI_COLOR_FORMAT_XV_YCC,
56 MTK_DPI_COLOR_FORMAT_YCBCR_444_FULL,
57 MTK_DPI_COLOR_FORMAT_YCBCR_422_FULL
58};
59
60struct mtk_dpi {
61 struct mtk_ddp_comp ddp_comp;
62 struct drm_encoder encoder;
63 struct drm_bridge *bridge;
64 void __iomem *regs;
65 struct device *dev;
66 struct clk *engine_clk;
67 struct clk *pixel_clk;
68 struct clk *tvd_clk;
69 int irq;
70 struct drm_display_mode mode;
71 const struct mtk_dpi_conf *conf;
72 enum mtk_dpi_out_color_format color_format;
73 enum mtk_dpi_out_yc_map yc_map;
74 enum mtk_dpi_out_bit_num bit_num;
75 enum mtk_dpi_out_channel_swap channel_swap;
76 int refcount;
77};
78
79static inline struct mtk_dpi *mtk_dpi_from_encoder(struct drm_encoder *e)
80{
81 return container_of(e, struct mtk_dpi, encoder);
82}
83
84enum mtk_dpi_polarity {
85 MTK_DPI_POLARITY_RISING,
86 MTK_DPI_POLARITY_FALLING,
87};
88
89struct mtk_dpi_polarities {
90 enum mtk_dpi_polarity de_pol;
91 enum mtk_dpi_polarity ck_pol;
92 enum mtk_dpi_polarity hsync_pol;
93 enum mtk_dpi_polarity vsync_pol;
94};
95
96struct mtk_dpi_sync_param {
97 u32 sync_width;
98 u32 front_porch;
99 u32 back_porch;
100 bool shift_half_line;
101};
102
103struct mtk_dpi_yc_limit {
104 u16 y_top;
105 u16 y_bottom;
106 u16 c_top;
107 u16 c_bottom;
108};
109
110struct mtk_dpi_conf {
111 unsigned int (*cal_factor)(int clock);
112 u32 reg_h_fre_con;
113 bool edge_sel_en;
114};
115
116static void mtk_dpi_mask(struct mtk_dpi *dpi, u32 offset, u32 val, u32 mask)
117{
118 u32 tmp = readl(dpi->regs + offset) & ~mask;
119
120 tmp |= (val & mask);
121 writel(tmp, dpi->regs + offset);
122}
123
124static void mtk_dpi_sw_reset(struct mtk_dpi *dpi, bool reset)
125{
126 mtk_dpi_mask(dpi, DPI_RET, reset ? RST : 0, RST);
127}
128
129static void mtk_dpi_enable(struct mtk_dpi *dpi)
130{
131 mtk_dpi_mask(dpi, DPI_EN, EN, EN);
132}
133
134static void mtk_dpi_disable(struct mtk_dpi *dpi)
135{
136 mtk_dpi_mask(dpi, DPI_EN, 0, EN);
137}
138
139static void mtk_dpi_config_hsync(struct mtk_dpi *dpi,
140 struct mtk_dpi_sync_param *sync)
141{
142 mtk_dpi_mask(dpi, DPI_TGEN_HWIDTH,
143 sync->sync_width << HPW, HPW_MASK);
144 mtk_dpi_mask(dpi, DPI_TGEN_HPORCH,
145 sync->back_porch << HBP, HBP_MASK);
146 mtk_dpi_mask(dpi, DPI_TGEN_HPORCH, sync->front_porch << HFP,
147 HFP_MASK);
148}
149
150static void mtk_dpi_config_vsync(struct mtk_dpi *dpi,
151 struct mtk_dpi_sync_param *sync,
152 u32 width_addr, u32 porch_addr)
153{
154 mtk_dpi_mask(dpi, width_addr,
155 sync->sync_width << VSYNC_WIDTH_SHIFT,
156 VSYNC_WIDTH_MASK);
157 mtk_dpi_mask(dpi, width_addr,
158 sync->shift_half_line << VSYNC_HALF_LINE_SHIFT,
159 VSYNC_HALF_LINE_MASK);
160 mtk_dpi_mask(dpi, porch_addr,
161 sync->back_porch << VSYNC_BACK_PORCH_SHIFT,
162 VSYNC_BACK_PORCH_MASK);
163 mtk_dpi_mask(dpi, porch_addr,
164 sync->front_porch << VSYNC_FRONT_PORCH_SHIFT,
165 VSYNC_FRONT_PORCH_MASK);
166}
167
168static void mtk_dpi_config_vsync_lodd(struct mtk_dpi *dpi,
169 struct mtk_dpi_sync_param *sync)
170{
171 mtk_dpi_config_vsync(dpi, sync, DPI_TGEN_VWIDTH, DPI_TGEN_VPORCH);
172}
173
174static void mtk_dpi_config_vsync_leven(struct mtk_dpi *dpi,
175 struct mtk_dpi_sync_param *sync)
176{
177 mtk_dpi_config_vsync(dpi, sync, DPI_TGEN_VWIDTH_LEVEN,
178 DPI_TGEN_VPORCH_LEVEN);
179}
180
181static void mtk_dpi_config_vsync_rodd(struct mtk_dpi *dpi,
182 struct mtk_dpi_sync_param *sync)
183{
184 mtk_dpi_config_vsync(dpi, sync, DPI_TGEN_VWIDTH_RODD,
185 DPI_TGEN_VPORCH_RODD);
186}
187
188static void mtk_dpi_config_vsync_reven(struct mtk_dpi *dpi,
189 struct mtk_dpi_sync_param *sync)
190{
191 mtk_dpi_config_vsync(dpi, sync, DPI_TGEN_VWIDTH_REVEN,
192 DPI_TGEN_VPORCH_REVEN);
193}
194
195static void mtk_dpi_config_pol(struct mtk_dpi *dpi,
196 struct mtk_dpi_polarities *dpi_pol)
197{
198 unsigned int pol;
199
200 pol = (dpi_pol->ck_pol == MTK_DPI_POLARITY_RISING ? 0 : CK_POL) |
201 (dpi_pol->de_pol == MTK_DPI_POLARITY_RISING ? 0 : DE_POL) |
202 (dpi_pol->hsync_pol == MTK_DPI_POLARITY_RISING ? 0 : HSYNC_POL) |
203 (dpi_pol->vsync_pol == MTK_DPI_POLARITY_RISING ? 0 : VSYNC_POL);
204 mtk_dpi_mask(dpi, DPI_OUTPUT_SETTING, pol,
205 CK_POL | DE_POL | HSYNC_POL | VSYNC_POL);
206}
207
208static void mtk_dpi_config_3d(struct mtk_dpi *dpi, bool en_3d)
209{
210 mtk_dpi_mask(dpi, DPI_CON, en_3d ? TDFP_EN : 0, TDFP_EN);
211}
212
213static void mtk_dpi_config_interface(struct mtk_dpi *dpi, bool inter)
214{
215 mtk_dpi_mask(dpi, DPI_CON, inter ? INTL_EN : 0, INTL_EN);
216}
217
218static void mtk_dpi_config_fb_size(struct mtk_dpi *dpi, u32 width, u32 height)
219{
220 mtk_dpi_mask(dpi, DPI_SIZE, width << HSIZE, HSIZE_MASK);
221 mtk_dpi_mask(dpi, DPI_SIZE, height << VSIZE, VSIZE_MASK);
222}
223
224static void mtk_dpi_config_channel_limit(struct mtk_dpi *dpi,
225 struct mtk_dpi_yc_limit *limit)
226{
227 mtk_dpi_mask(dpi, DPI_Y_LIMIT, limit->y_bottom << Y_LIMINT_BOT,
228 Y_LIMINT_BOT_MASK);
229 mtk_dpi_mask(dpi, DPI_Y_LIMIT, limit->y_top << Y_LIMINT_TOP,
230 Y_LIMINT_TOP_MASK);
231 mtk_dpi_mask(dpi, DPI_C_LIMIT, limit->c_bottom << C_LIMIT_BOT,
232 C_LIMIT_BOT_MASK);
233 mtk_dpi_mask(dpi, DPI_C_LIMIT, limit->c_top << C_LIMIT_TOP,
234 C_LIMIT_TOP_MASK);
235}
236
237static void mtk_dpi_config_bit_num(struct mtk_dpi *dpi,
238 enum mtk_dpi_out_bit_num num)
239{
240 u32 val;
241
242 switch (num) {
243 case MTK_DPI_OUT_BIT_NUM_8BITS:
244 val = OUT_BIT_8;
245 break;
246 case MTK_DPI_OUT_BIT_NUM_10BITS:
247 val = OUT_BIT_10;
248 break;
249 case MTK_DPI_OUT_BIT_NUM_12BITS:
250 val = OUT_BIT_12;
251 break;
252 case MTK_DPI_OUT_BIT_NUM_16BITS:
253 val = OUT_BIT_16;
254 break;
255 default:
256 val = OUT_BIT_8;
257 break;
258 }
259 mtk_dpi_mask(dpi, DPI_OUTPUT_SETTING, val << OUT_BIT,
260 OUT_BIT_MASK);
261}
262
263static void mtk_dpi_config_yc_map(struct mtk_dpi *dpi,
264 enum mtk_dpi_out_yc_map map)
265{
266 u32 val;
267
268 switch (map) {
269 case MTK_DPI_OUT_YC_MAP_RGB:
270 val = YC_MAP_RGB;
271 break;
272 case MTK_DPI_OUT_YC_MAP_CYCY:
273 val = YC_MAP_CYCY;
274 break;
275 case MTK_DPI_OUT_YC_MAP_YCYC:
276 val = YC_MAP_YCYC;
277 break;
278 case MTK_DPI_OUT_YC_MAP_CY:
279 val = YC_MAP_CY;
280 break;
281 case MTK_DPI_OUT_YC_MAP_YC:
282 val = YC_MAP_YC;
283 break;
284 default:
285 val = YC_MAP_RGB;
286 break;
287 }
288
289 mtk_dpi_mask(dpi, DPI_OUTPUT_SETTING, val << YC_MAP, YC_MAP_MASK);
290}
291
292static void mtk_dpi_config_channel_swap(struct mtk_dpi *dpi,
293 enum mtk_dpi_out_channel_swap swap)
294{
295 u32 val;
296
297 switch (swap) {
298 case MTK_DPI_OUT_CHANNEL_SWAP_RGB:
299 val = SWAP_RGB;
300 break;
301 case MTK_DPI_OUT_CHANNEL_SWAP_GBR:
302 val = SWAP_GBR;
303 break;
304 case MTK_DPI_OUT_CHANNEL_SWAP_BRG:
305 val = SWAP_BRG;
306 break;
307 case MTK_DPI_OUT_CHANNEL_SWAP_RBG:
308 val = SWAP_RBG;
309 break;
310 case MTK_DPI_OUT_CHANNEL_SWAP_GRB:
311 val = SWAP_GRB;
312 break;
313 case MTK_DPI_OUT_CHANNEL_SWAP_BGR:
314 val = SWAP_BGR;
315 break;
316 default:
317 val = SWAP_RGB;
318 break;
319 }
320
321 mtk_dpi_mask(dpi, DPI_OUTPUT_SETTING, val << CH_SWAP, CH_SWAP_MASK);
322}
323
324static void mtk_dpi_config_yuv422_enable(struct mtk_dpi *dpi, bool enable)
325{
326 mtk_dpi_mask(dpi, DPI_CON, enable ? YUV422_EN : 0, YUV422_EN);
327}
328
329static void mtk_dpi_config_csc_enable(struct mtk_dpi *dpi, bool enable)
330{
331 mtk_dpi_mask(dpi, DPI_CON, enable ? CSC_ENABLE : 0, CSC_ENABLE);
332}
333
334static void mtk_dpi_config_swap_input(struct mtk_dpi *dpi, bool enable)
335{
336 mtk_dpi_mask(dpi, DPI_CON, enable ? IN_RB_SWAP : 0, IN_RB_SWAP);
337}
338
339static void mtk_dpi_config_2n_h_fre(struct mtk_dpi *dpi)
340{
341 mtk_dpi_mask(dpi, dpi->conf->reg_h_fre_con, H_FRE_2N, H_FRE_2N);
342}
343
344static void mtk_dpi_config_disable_edge(struct mtk_dpi *dpi)
345{
346 if (dpi->conf->edge_sel_en)
347 mtk_dpi_mask(dpi, dpi->conf->reg_h_fre_con, 0, EDGE_SEL_EN);
348}
349
350static void mtk_dpi_config_color_format(struct mtk_dpi *dpi,
351 enum mtk_dpi_out_color_format format)
352{
353 if ((format == MTK_DPI_COLOR_FORMAT_YCBCR_444) ||
354 (format == MTK_DPI_COLOR_FORMAT_YCBCR_444_FULL)) {
355 mtk_dpi_config_yuv422_enable(dpi, false);
356 mtk_dpi_config_csc_enable(dpi, true);
357 mtk_dpi_config_swap_input(dpi, false);
358 mtk_dpi_config_channel_swap(dpi, MTK_DPI_OUT_CHANNEL_SWAP_BGR);
359 } else if ((format == MTK_DPI_COLOR_FORMAT_YCBCR_422) ||
360 (format == MTK_DPI_COLOR_FORMAT_YCBCR_422_FULL)) {
361 mtk_dpi_config_yuv422_enable(dpi, true);
362 mtk_dpi_config_csc_enable(dpi, true);
363 mtk_dpi_config_swap_input(dpi, true);
364 mtk_dpi_config_channel_swap(dpi, MTK_DPI_OUT_CHANNEL_SWAP_RGB);
365 } else {
366 mtk_dpi_config_yuv422_enable(dpi, false);
367 mtk_dpi_config_csc_enable(dpi, false);
368 mtk_dpi_config_swap_input(dpi, false);
369 mtk_dpi_config_channel_swap(dpi, MTK_DPI_OUT_CHANNEL_SWAP_RGB);
370 }
371}
372
373static void mtk_dpi_power_off(struct mtk_dpi *dpi)
374{
375 if (WARN_ON(dpi->refcount == 0))
376 return;
377
378 if (--dpi->refcount != 0)
379 return;
380
381 mtk_dpi_disable(dpi);
382 clk_disable_unprepare(dpi->pixel_clk);
383 clk_disable_unprepare(dpi->engine_clk);
384}
385
386static int mtk_dpi_power_on(struct mtk_dpi *dpi)
387{
388 int ret;
389
390 if (++dpi->refcount != 1)
391 return 0;
392
393 ret = clk_prepare_enable(dpi->engine_clk);
394 if (ret) {
395 dev_err(dpi->dev, "Failed to enable engine clock: %d\n", ret);
396 goto err_refcount;
397 }
398
399 ret = clk_prepare_enable(dpi->pixel_clk);
400 if (ret) {
401 dev_err(dpi->dev, "Failed to enable pixel clock: %d\n", ret);
402 goto err_pixel;
403 }
404
405 mtk_dpi_enable(dpi);
406 return 0;
407
408err_pixel:
409 clk_disable_unprepare(dpi->engine_clk);
410err_refcount:
411 dpi->refcount--;
412 return ret;
413}
414
415static int mtk_dpi_set_display_mode(struct mtk_dpi *dpi,
416 struct drm_display_mode *mode)
417{
418 struct mtk_dpi_yc_limit limit;
419 struct mtk_dpi_polarities dpi_pol;
420 struct mtk_dpi_sync_param hsync;
421 struct mtk_dpi_sync_param vsync_lodd = { 0 };
422 struct mtk_dpi_sync_param vsync_leven = { 0 };
423 struct mtk_dpi_sync_param vsync_rodd = { 0 };
424 struct mtk_dpi_sync_param vsync_reven = { 0 };
425 struct videomode vm = { 0 };
426 unsigned long pll_rate;
427 unsigned int factor;
428
429 /* let pll_rate can fix the valid range of tvdpll (1G~2GHz) */
430 factor = dpi->conf->cal_factor(mode->clock);
431 drm_display_mode_to_videomode(mode, &vm);
432 pll_rate = vm.pixelclock * factor;
433
434 dev_dbg(dpi->dev, "Want PLL %lu Hz, pixel clock %lu Hz\n",
435 pll_rate, vm.pixelclock);
436
437 clk_set_rate(dpi->tvd_clk, pll_rate);
438 pll_rate = clk_get_rate(dpi->tvd_clk);
439
440 vm.pixelclock = pll_rate / factor;
441 clk_set_rate(dpi->pixel_clk, vm.pixelclock);
442 vm.pixelclock = clk_get_rate(dpi->pixel_clk);
443
444 dev_dbg(dpi->dev, "Got PLL %lu Hz, pixel clock %lu Hz\n",
445 pll_rate, vm.pixelclock);
446
447 limit.c_bottom = 0x0010;
448 limit.c_top = 0x0FE0;
449 limit.y_bottom = 0x0010;
450 limit.y_top = 0x0FE0;
451
452 dpi_pol.ck_pol = MTK_DPI_POLARITY_FALLING;
453 dpi_pol.de_pol = MTK_DPI_POLARITY_RISING;
454 dpi_pol.hsync_pol = vm.flags & DISPLAY_FLAGS_HSYNC_HIGH ?
455 MTK_DPI_POLARITY_FALLING : MTK_DPI_POLARITY_RISING;
456 dpi_pol.vsync_pol = vm.flags & DISPLAY_FLAGS_VSYNC_HIGH ?
457 MTK_DPI_POLARITY_FALLING : MTK_DPI_POLARITY_RISING;
458 hsync.sync_width = vm.hsync_len;
459 hsync.back_porch = vm.hback_porch;
460 hsync.front_porch = vm.hfront_porch;
461 hsync.shift_half_line = false;
462 vsync_lodd.sync_width = vm.vsync_len;
463 vsync_lodd.back_porch = vm.vback_porch;
464 vsync_lodd.front_porch = vm.vfront_porch;
465 vsync_lodd.shift_half_line = false;
466
467 if (vm.flags & DISPLAY_FLAGS_INTERLACED &&
468 mode->flags & DRM_MODE_FLAG_3D_MASK) {
469 vsync_leven = vsync_lodd;
470 vsync_rodd = vsync_lodd;
471 vsync_reven = vsync_lodd;
472 vsync_leven.shift_half_line = true;
473 vsync_reven.shift_half_line = true;
474 } else if (vm.flags & DISPLAY_FLAGS_INTERLACED &&
475 !(mode->flags & DRM_MODE_FLAG_3D_MASK)) {
476 vsync_leven = vsync_lodd;
477 vsync_leven.shift_half_line = true;
478 } else if (!(vm.flags & DISPLAY_FLAGS_INTERLACED) &&
479 mode->flags & DRM_MODE_FLAG_3D_MASK) {
480 vsync_rodd = vsync_lodd;
481 }
482 mtk_dpi_sw_reset(dpi, true);
483 mtk_dpi_config_pol(dpi, &dpi_pol);
484
485 mtk_dpi_config_hsync(dpi, &hsync);
486 mtk_dpi_config_vsync_lodd(dpi, &vsync_lodd);
487 mtk_dpi_config_vsync_rodd(dpi, &vsync_rodd);
488 mtk_dpi_config_vsync_leven(dpi, &vsync_leven);
489 mtk_dpi_config_vsync_reven(dpi, &vsync_reven);
490
491 mtk_dpi_config_3d(dpi, !!(mode->flags & DRM_MODE_FLAG_3D_MASK));
492 mtk_dpi_config_interface(dpi, !!(vm.flags &
493 DISPLAY_FLAGS_INTERLACED));
494 if (vm.flags & DISPLAY_FLAGS_INTERLACED)
495 mtk_dpi_config_fb_size(dpi, vm.hactive, vm.vactive >> 1);
496 else
497 mtk_dpi_config_fb_size(dpi, vm.hactive, vm.vactive);
498
499 mtk_dpi_config_channel_limit(dpi, &limit);
500 mtk_dpi_config_bit_num(dpi, dpi->bit_num);
501 mtk_dpi_config_channel_swap(dpi, dpi->channel_swap);
502 mtk_dpi_config_yc_map(dpi, dpi->yc_map);
503 mtk_dpi_config_color_format(dpi, dpi->color_format);
504 mtk_dpi_config_2n_h_fre(dpi);
505 mtk_dpi_config_disable_edge(dpi);
506 mtk_dpi_sw_reset(dpi, false);
507
508 return 0;
509}
510
511static void mtk_dpi_encoder_destroy(struct drm_encoder *encoder)
512{
513 drm_encoder_cleanup(encoder);
514}
515
516static const struct drm_encoder_funcs mtk_dpi_encoder_funcs = {
517 .destroy = mtk_dpi_encoder_destroy,
518};
519
520static bool mtk_dpi_encoder_mode_fixup(struct drm_encoder *encoder,
521 const struct drm_display_mode *mode,
522 struct drm_display_mode *adjusted_mode)
523{
524 return true;
525}
526
527static void mtk_dpi_encoder_mode_set(struct drm_encoder *encoder,
528 struct drm_display_mode *mode,
529 struct drm_display_mode *adjusted_mode)
530{
531 struct mtk_dpi *dpi = mtk_dpi_from_encoder(encoder);
532
533 drm_mode_copy(&dpi->mode, adjusted_mode);
534}
535
536static void mtk_dpi_encoder_disable(struct drm_encoder *encoder)
537{
538 struct mtk_dpi *dpi = mtk_dpi_from_encoder(encoder);
539
540 mtk_dpi_power_off(dpi);
541}
542
543static void mtk_dpi_encoder_enable(struct drm_encoder *encoder)
544{
545 struct mtk_dpi *dpi = mtk_dpi_from_encoder(encoder);
546
547 mtk_dpi_power_on(dpi);
548 mtk_dpi_set_display_mode(dpi, &dpi->mode);
549}
550
551static int mtk_dpi_atomic_check(struct drm_encoder *encoder,
552 struct drm_crtc_state *crtc_state,
553 struct drm_connector_state *conn_state)
554{
555 return 0;
556}
557
558static const struct drm_encoder_helper_funcs mtk_dpi_encoder_helper_funcs = {
559 .mode_fixup = mtk_dpi_encoder_mode_fixup,
560 .mode_set = mtk_dpi_encoder_mode_set,
561 .disable = mtk_dpi_encoder_disable,
562 .enable = mtk_dpi_encoder_enable,
563 .atomic_check = mtk_dpi_atomic_check,
564};
565
566static void mtk_dpi_start(struct mtk_ddp_comp *comp)
567{
568 struct mtk_dpi *dpi = container_of(comp, struct mtk_dpi, ddp_comp);
569
570 mtk_dpi_power_on(dpi);
571}
572
573static void mtk_dpi_stop(struct mtk_ddp_comp *comp)
574{
575 struct mtk_dpi *dpi = container_of(comp, struct mtk_dpi, ddp_comp);
576
577 mtk_dpi_power_off(dpi);
578}
579
580static const struct mtk_ddp_comp_funcs mtk_dpi_funcs = {
581 .start = mtk_dpi_start,
582 .stop = mtk_dpi_stop,
583};
584
585static int mtk_dpi_bind(struct device *dev, struct device *master, void *data)
586{
587 struct mtk_dpi *dpi = dev_get_drvdata(dev);
588 struct drm_device *drm_dev = data;
589 int ret;
590
591 ret = mtk_ddp_comp_register(drm_dev, &dpi->ddp_comp);
592 if (ret < 0) {
593 dev_err(dev, "Failed to register component %pOF: %d\n",
594 dev->of_node, ret);
595 return ret;
596 }
597
598 ret = drm_encoder_init(drm_dev, &dpi->encoder, &mtk_dpi_encoder_funcs,
599 DRM_MODE_ENCODER_TMDS, NULL);
600 if (ret) {
601 dev_err(dev, "Failed to initialize decoder: %d\n", ret);
602 goto err_unregister;
603 }
604 drm_encoder_helper_add(&dpi->encoder, &mtk_dpi_encoder_helper_funcs);
605
606 /* Currently DPI0 is fixed to be driven by OVL1 */
607 dpi->encoder.possible_crtcs = BIT(1);
608
609 ret = drm_bridge_attach(&dpi->encoder, dpi->bridge, NULL);
610 if (ret) {
611 dev_err(dev, "Failed to attach bridge: %d\n", ret);
612 goto err_cleanup;
613 }
614
615 dpi->bit_num = MTK_DPI_OUT_BIT_NUM_8BITS;
616 dpi->channel_swap = MTK_DPI_OUT_CHANNEL_SWAP_RGB;
617 dpi->yc_map = MTK_DPI_OUT_YC_MAP_RGB;
618 dpi->color_format = MTK_DPI_COLOR_FORMAT_RGB;
619
620 return 0;
621
622err_cleanup:
623 drm_encoder_cleanup(&dpi->encoder);
624err_unregister:
625 mtk_ddp_comp_unregister(drm_dev, &dpi->ddp_comp);
626 return ret;
627}
628
629static void mtk_dpi_unbind(struct device *dev, struct device *master,
630 void *data)
631{
632 struct mtk_dpi *dpi = dev_get_drvdata(dev);
633 struct drm_device *drm_dev = data;
634
635 drm_encoder_cleanup(&dpi->encoder);
636 mtk_ddp_comp_unregister(drm_dev, &dpi->ddp_comp);
637}
638
639static const struct component_ops mtk_dpi_component_ops = {
640 .bind = mtk_dpi_bind,
641 .unbind = mtk_dpi_unbind,
642};
643
644static unsigned int mt8173_calculate_factor(int clock)
645{
646 if (clock <= 27000)
647 return 3 << 4;
648 else if (clock <= 84000)
649 return 3 << 3;
650 else if (clock <= 167000)
651 return 3 << 2;
652 else
653 return 3 << 1;
654}
655
656static unsigned int mt2701_calculate_factor(int clock)
657{
658 if (clock <= 64000)
659 return 4;
660 else if (clock <= 128000)
661 return 2;
662 else
663 return 1;
664}
665
666static const struct mtk_dpi_conf mt8173_conf = {
667 .cal_factor = mt8173_calculate_factor,
668 .reg_h_fre_con = 0xe0,
669};
670
671static const struct mtk_dpi_conf mt2701_conf = {
672 .cal_factor = mt2701_calculate_factor,
673 .reg_h_fre_con = 0xb0,
674 .edge_sel_en = true,
675};
676
677static int mtk_dpi_probe(struct platform_device *pdev)
678{
679 struct device *dev = &pdev->dev;
680 struct mtk_dpi *dpi;
681 struct resource *mem;
682 int comp_id;
683 int ret;
684
685 dpi = devm_kzalloc(dev, sizeof(*dpi), GFP_KERNEL);
686 if (!dpi)
687 return -ENOMEM;
688
689 dpi->dev = dev;
690 dpi->conf = (struct mtk_dpi_conf *)of_device_get_match_data(dev);
691
692 mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
693 dpi->regs = devm_ioremap_resource(dev, mem);
694 if (IS_ERR(dpi->regs)) {
695 ret = PTR_ERR(dpi->regs);
696 dev_err(dev, "Failed to ioremap mem resource: %d\n", ret);
697 return ret;
698 }
699
700 dpi->engine_clk = devm_clk_get(dev, "engine");
701 if (IS_ERR(dpi->engine_clk)) {
702 ret = PTR_ERR(dpi->engine_clk);
703 dev_err(dev, "Failed to get engine clock: %d\n", ret);
704 return ret;
705 }
706
707 dpi->pixel_clk = devm_clk_get(dev, "pixel");
708 if (IS_ERR(dpi->pixel_clk)) {
709 ret = PTR_ERR(dpi->pixel_clk);
710 dev_err(dev, "Failed to get pixel clock: %d\n", ret);
711 return ret;
712 }
713
714 dpi->tvd_clk = devm_clk_get(dev, "pll");
715 if (IS_ERR(dpi->tvd_clk)) {
716 ret = PTR_ERR(dpi->tvd_clk);
717 dev_err(dev, "Failed to get tvdpll clock: %d\n", ret);
718 return ret;
719 }
720
721 dpi->irq = platform_get_irq(pdev, 0);
722 if (dpi->irq <= 0) {
723 dev_err(dev, "Failed to get irq: %d\n", dpi->irq);
724 return -EINVAL;
725 }
726
727 ret = drm_of_find_panel_or_bridge(dev->of_node, 0, 0,
728 NULL, &dpi->bridge);
729 if (ret)
730 return ret;
731
732 dev_info(dev, "Found bridge node: %pOF\n", dpi->bridge->of_node);
733
734 comp_id = mtk_ddp_comp_get_id(dev->of_node, MTK_DPI);
735 if (comp_id < 0) {
736 dev_err(dev, "Failed to identify by alias: %d\n", comp_id);
737 return comp_id;
738 }
739
740 ret = mtk_ddp_comp_init(dev, dev->of_node, &dpi->ddp_comp, comp_id,
741 &mtk_dpi_funcs);
742 if (ret) {
743 dev_err(dev, "Failed to initialize component: %d\n", ret);
744 return ret;
745 }
746
747 platform_set_drvdata(pdev, dpi);
748
749 ret = component_add(dev, &mtk_dpi_component_ops);
750 if (ret) {
751 dev_err(dev, "Failed to add component: %d\n", ret);
752 return ret;
753 }
754
755 return 0;
756}
757
758static int mtk_dpi_remove(struct platform_device *pdev)
759{
760 component_del(&pdev->dev, &mtk_dpi_component_ops);
761
762 return 0;
763}
764
765static const struct of_device_id mtk_dpi_of_ids[] = {
766 { .compatible = "mediatek,mt2701-dpi",
767 .data = &mt2701_conf,
768 },
769 { .compatible = "mediatek,mt8173-dpi",
770 .data = &mt8173_conf,
771 },
772 { },
773};
774
775struct platform_driver mtk_dpi_driver = {
776 .probe = mtk_dpi_probe,
777 .remove = mtk_dpi_remove,
778 .driver = {
779 .name = "mediatek-dpi",
780 .of_match_table = mtk_dpi_of_ids,
781 },
782};
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (c) 2014 MediaTek Inc.
4 * Author: Jie Qiu <jie.qiu@mediatek.com>
5 */
6
7#include <linux/clk.h>
8#include <linux/component.h>
9#include <linux/interrupt.h>
10#include <linux/kernel.h>
11#include <linux/media-bus-format.h>
12#include <linux/of.h>
13#include <linux/of_graph.h>
14#include <linux/pinctrl/consumer.h>
15#include <linux/platform_device.h>
16#include <linux/soc/mediatek/mtk-mmsys.h>
17#include <linux/types.h>
18
19#include <video/videomode.h>
20
21#include <drm/drm_atomic_helper.h>
22#include <drm/drm_bridge.h>
23#include <drm/drm_bridge_connector.h>
24#include <drm/drm_crtc.h>
25#include <drm/drm_edid.h>
26#include <drm/drm_of.h>
27#include <drm/drm_simple_kms_helper.h>
28
29#include "mtk_disp_drv.h"
30#include "mtk_dpi_regs.h"
31#include "mtk_drm_ddp_comp.h"
32#include "mtk_drm_drv.h"
33
34enum mtk_dpi_out_bit_num {
35 MTK_DPI_OUT_BIT_NUM_8BITS,
36 MTK_DPI_OUT_BIT_NUM_10BITS,
37 MTK_DPI_OUT_BIT_NUM_12BITS,
38 MTK_DPI_OUT_BIT_NUM_16BITS
39};
40
41enum mtk_dpi_out_yc_map {
42 MTK_DPI_OUT_YC_MAP_RGB,
43 MTK_DPI_OUT_YC_MAP_CYCY,
44 MTK_DPI_OUT_YC_MAP_YCYC,
45 MTK_DPI_OUT_YC_MAP_CY,
46 MTK_DPI_OUT_YC_MAP_YC
47};
48
49enum mtk_dpi_out_channel_swap {
50 MTK_DPI_OUT_CHANNEL_SWAP_RGB,
51 MTK_DPI_OUT_CHANNEL_SWAP_GBR,
52 MTK_DPI_OUT_CHANNEL_SWAP_BRG,
53 MTK_DPI_OUT_CHANNEL_SWAP_RBG,
54 MTK_DPI_OUT_CHANNEL_SWAP_GRB,
55 MTK_DPI_OUT_CHANNEL_SWAP_BGR
56};
57
58enum mtk_dpi_out_color_format {
59 MTK_DPI_COLOR_FORMAT_RGB,
60 MTK_DPI_COLOR_FORMAT_YCBCR_422
61};
62
63struct mtk_dpi {
64 struct drm_encoder encoder;
65 struct drm_bridge bridge;
66 struct drm_bridge *next_bridge;
67 struct drm_connector *connector;
68 void __iomem *regs;
69 struct device *dev;
70 struct device *mmsys_dev;
71 struct clk *engine_clk;
72 struct clk *pixel_clk;
73 struct clk *tvd_clk;
74 int irq;
75 struct drm_display_mode mode;
76 const struct mtk_dpi_conf *conf;
77 enum mtk_dpi_out_color_format color_format;
78 enum mtk_dpi_out_yc_map yc_map;
79 enum mtk_dpi_out_bit_num bit_num;
80 enum mtk_dpi_out_channel_swap channel_swap;
81 struct pinctrl *pinctrl;
82 struct pinctrl_state *pins_gpio;
83 struct pinctrl_state *pins_dpi;
84 u32 output_fmt;
85 int refcount;
86};
87
88static inline struct mtk_dpi *bridge_to_dpi(struct drm_bridge *b)
89{
90 return container_of(b, struct mtk_dpi, bridge);
91}
92
93enum mtk_dpi_polarity {
94 MTK_DPI_POLARITY_RISING,
95 MTK_DPI_POLARITY_FALLING,
96};
97
98struct mtk_dpi_polarities {
99 enum mtk_dpi_polarity de_pol;
100 enum mtk_dpi_polarity ck_pol;
101 enum mtk_dpi_polarity hsync_pol;
102 enum mtk_dpi_polarity vsync_pol;
103};
104
105struct mtk_dpi_sync_param {
106 u32 sync_width;
107 u32 front_porch;
108 u32 back_porch;
109 bool shift_half_line;
110};
111
112struct mtk_dpi_yc_limit {
113 u16 y_top;
114 u16 y_bottom;
115 u16 c_top;
116 u16 c_bottom;
117};
118
119/**
120 * struct mtk_dpi_conf - Configuration of mediatek dpi.
121 * @cal_factor: Callback function to calculate factor value.
122 * @reg_h_fre_con: Register address of frequency control.
123 * @max_clock_khz: Max clock frequency supported for this SoCs in khz units.
124 * @edge_sel_en: Enable of edge selection.
125 * @output_fmts: Array of supported output formats.
126 * @num_output_fmts: Quantity of supported output formats.
127 * @is_ck_de_pol: Support CK/DE polarity.
128 * @swap_input_support: Support input swap function.
129 * @support_direct_pin: IP supports direct connection to dpi panels.
130 * @input_2pixel: Input pixel of dp_intf is 2 pixel per round, so enable this
131 * config to enable this feature.
132 * @dimension_mask: Mask used for HWIDTH, HPORCH, VSYNC_WIDTH and VSYNC_PORCH
133 * (no shift).
134 * @hvsize_mask: Mask of HSIZE and VSIZE mask (no shift).
135 * @channel_swap_shift: Shift value of channel swap.
136 * @yuv422_en_bit: Enable bit of yuv422.
137 * @csc_enable_bit: Enable bit of CSC.
138 * @pixels_per_iter: Quantity of transferred pixels per iteration.
139 * @edge_cfg_in_mmsys: If the edge configuration for DPI's output needs to be set in MMSYS.
140 */
141struct mtk_dpi_conf {
142 unsigned int (*cal_factor)(int clock);
143 u32 reg_h_fre_con;
144 u32 max_clock_khz;
145 bool edge_sel_en;
146 const u32 *output_fmts;
147 u32 num_output_fmts;
148 bool is_ck_de_pol;
149 bool swap_input_support;
150 bool support_direct_pin;
151 bool input_2pixel;
152 u32 dimension_mask;
153 u32 hvsize_mask;
154 u32 channel_swap_shift;
155 u32 yuv422_en_bit;
156 u32 csc_enable_bit;
157 u32 pixels_per_iter;
158 bool edge_cfg_in_mmsys;
159};
160
161static void mtk_dpi_mask(struct mtk_dpi *dpi, u32 offset, u32 val, u32 mask)
162{
163 u32 tmp = readl(dpi->regs + offset) & ~mask;
164
165 tmp |= (val & mask);
166 writel(tmp, dpi->regs + offset);
167}
168
169static void mtk_dpi_sw_reset(struct mtk_dpi *dpi, bool reset)
170{
171 mtk_dpi_mask(dpi, DPI_RET, reset ? RST : 0, RST);
172}
173
174static void mtk_dpi_enable(struct mtk_dpi *dpi)
175{
176 mtk_dpi_mask(dpi, DPI_EN, EN, EN);
177}
178
179static void mtk_dpi_disable(struct mtk_dpi *dpi)
180{
181 mtk_dpi_mask(dpi, DPI_EN, 0, EN);
182}
183
184static void mtk_dpi_config_hsync(struct mtk_dpi *dpi,
185 struct mtk_dpi_sync_param *sync)
186{
187 mtk_dpi_mask(dpi, DPI_TGEN_HWIDTH, sync->sync_width << HPW,
188 dpi->conf->dimension_mask << HPW);
189 mtk_dpi_mask(dpi, DPI_TGEN_HPORCH, sync->back_porch << HBP,
190 dpi->conf->dimension_mask << HBP);
191 mtk_dpi_mask(dpi, DPI_TGEN_HPORCH, sync->front_porch << HFP,
192 dpi->conf->dimension_mask << HFP);
193}
194
195static void mtk_dpi_config_vsync(struct mtk_dpi *dpi,
196 struct mtk_dpi_sync_param *sync,
197 u32 width_addr, u32 porch_addr)
198{
199 mtk_dpi_mask(dpi, width_addr,
200 sync->shift_half_line << VSYNC_HALF_LINE_SHIFT,
201 VSYNC_HALF_LINE_MASK);
202 mtk_dpi_mask(dpi, width_addr,
203 sync->sync_width << VSYNC_WIDTH_SHIFT,
204 dpi->conf->dimension_mask << VSYNC_WIDTH_SHIFT);
205 mtk_dpi_mask(dpi, porch_addr,
206 sync->back_porch << VSYNC_BACK_PORCH_SHIFT,
207 dpi->conf->dimension_mask << VSYNC_BACK_PORCH_SHIFT);
208 mtk_dpi_mask(dpi, porch_addr,
209 sync->front_porch << VSYNC_FRONT_PORCH_SHIFT,
210 dpi->conf->dimension_mask << VSYNC_FRONT_PORCH_SHIFT);
211}
212
213static void mtk_dpi_config_vsync_lodd(struct mtk_dpi *dpi,
214 struct mtk_dpi_sync_param *sync)
215{
216 mtk_dpi_config_vsync(dpi, sync, DPI_TGEN_VWIDTH, DPI_TGEN_VPORCH);
217}
218
219static void mtk_dpi_config_vsync_leven(struct mtk_dpi *dpi,
220 struct mtk_dpi_sync_param *sync)
221{
222 mtk_dpi_config_vsync(dpi, sync, DPI_TGEN_VWIDTH_LEVEN,
223 DPI_TGEN_VPORCH_LEVEN);
224}
225
226static void mtk_dpi_config_vsync_rodd(struct mtk_dpi *dpi,
227 struct mtk_dpi_sync_param *sync)
228{
229 mtk_dpi_config_vsync(dpi, sync, DPI_TGEN_VWIDTH_RODD,
230 DPI_TGEN_VPORCH_RODD);
231}
232
233static void mtk_dpi_config_vsync_reven(struct mtk_dpi *dpi,
234 struct mtk_dpi_sync_param *sync)
235{
236 mtk_dpi_config_vsync(dpi, sync, DPI_TGEN_VWIDTH_REVEN,
237 DPI_TGEN_VPORCH_REVEN);
238}
239
240static void mtk_dpi_config_pol(struct mtk_dpi *dpi,
241 struct mtk_dpi_polarities *dpi_pol)
242{
243 unsigned int pol;
244 unsigned int mask;
245
246 mask = HSYNC_POL | VSYNC_POL;
247 pol = (dpi_pol->hsync_pol == MTK_DPI_POLARITY_RISING ? 0 : HSYNC_POL) |
248 (dpi_pol->vsync_pol == MTK_DPI_POLARITY_RISING ? 0 : VSYNC_POL);
249 if (dpi->conf->is_ck_de_pol) {
250 mask |= CK_POL | DE_POL;
251 pol |= (dpi_pol->ck_pol == MTK_DPI_POLARITY_RISING ?
252 0 : CK_POL) |
253 (dpi_pol->de_pol == MTK_DPI_POLARITY_RISING ?
254 0 : DE_POL);
255 }
256
257 mtk_dpi_mask(dpi, DPI_OUTPUT_SETTING, pol, mask);
258}
259
260static void mtk_dpi_config_3d(struct mtk_dpi *dpi, bool en_3d)
261{
262 mtk_dpi_mask(dpi, DPI_CON, en_3d ? TDFP_EN : 0, TDFP_EN);
263}
264
265static void mtk_dpi_config_interface(struct mtk_dpi *dpi, bool inter)
266{
267 mtk_dpi_mask(dpi, DPI_CON, inter ? INTL_EN : 0, INTL_EN);
268}
269
270static void mtk_dpi_config_fb_size(struct mtk_dpi *dpi, u32 width, u32 height)
271{
272 mtk_dpi_mask(dpi, DPI_SIZE, width << HSIZE,
273 dpi->conf->hvsize_mask << HSIZE);
274 mtk_dpi_mask(dpi, DPI_SIZE, height << VSIZE,
275 dpi->conf->hvsize_mask << VSIZE);
276}
277
278static void mtk_dpi_config_channel_limit(struct mtk_dpi *dpi)
279{
280 struct mtk_dpi_yc_limit limit;
281
282 if (drm_default_rgb_quant_range(&dpi->mode) ==
283 HDMI_QUANTIZATION_RANGE_LIMITED) {
284 limit.y_bottom = 0x10;
285 limit.y_top = 0xfe0;
286 limit.c_bottom = 0x10;
287 limit.c_top = 0xfe0;
288 } else {
289 limit.y_bottom = 0;
290 limit.y_top = 0xfff;
291 limit.c_bottom = 0;
292 limit.c_top = 0xfff;
293 }
294
295 mtk_dpi_mask(dpi, DPI_Y_LIMIT, limit.y_bottom << Y_LIMINT_BOT,
296 Y_LIMINT_BOT_MASK);
297 mtk_dpi_mask(dpi, DPI_Y_LIMIT, limit.y_top << Y_LIMINT_TOP,
298 Y_LIMINT_TOP_MASK);
299 mtk_dpi_mask(dpi, DPI_C_LIMIT, limit.c_bottom << C_LIMIT_BOT,
300 C_LIMIT_BOT_MASK);
301 mtk_dpi_mask(dpi, DPI_C_LIMIT, limit.c_top << C_LIMIT_TOP,
302 C_LIMIT_TOP_MASK);
303}
304
305static void mtk_dpi_config_bit_num(struct mtk_dpi *dpi,
306 enum mtk_dpi_out_bit_num num)
307{
308 u32 val;
309
310 switch (num) {
311 case MTK_DPI_OUT_BIT_NUM_8BITS:
312 val = OUT_BIT_8;
313 break;
314 case MTK_DPI_OUT_BIT_NUM_10BITS:
315 val = OUT_BIT_10;
316 break;
317 case MTK_DPI_OUT_BIT_NUM_12BITS:
318 val = OUT_BIT_12;
319 break;
320 case MTK_DPI_OUT_BIT_NUM_16BITS:
321 val = OUT_BIT_16;
322 break;
323 default:
324 val = OUT_BIT_8;
325 break;
326 }
327 mtk_dpi_mask(dpi, DPI_OUTPUT_SETTING, val << OUT_BIT,
328 OUT_BIT_MASK);
329}
330
331static void mtk_dpi_config_yc_map(struct mtk_dpi *dpi,
332 enum mtk_dpi_out_yc_map map)
333{
334 u32 val;
335
336 switch (map) {
337 case MTK_DPI_OUT_YC_MAP_RGB:
338 val = YC_MAP_RGB;
339 break;
340 case MTK_DPI_OUT_YC_MAP_CYCY:
341 val = YC_MAP_CYCY;
342 break;
343 case MTK_DPI_OUT_YC_MAP_YCYC:
344 val = YC_MAP_YCYC;
345 break;
346 case MTK_DPI_OUT_YC_MAP_CY:
347 val = YC_MAP_CY;
348 break;
349 case MTK_DPI_OUT_YC_MAP_YC:
350 val = YC_MAP_YC;
351 break;
352 default:
353 val = YC_MAP_RGB;
354 break;
355 }
356
357 mtk_dpi_mask(dpi, DPI_OUTPUT_SETTING, val << YC_MAP, YC_MAP_MASK);
358}
359
360static void mtk_dpi_config_channel_swap(struct mtk_dpi *dpi,
361 enum mtk_dpi_out_channel_swap swap)
362{
363 u32 val;
364
365 switch (swap) {
366 case MTK_DPI_OUT_CHANNEL_SWAP_RGB:
367 val = SWAP_RGB;
368 break;
369 case MTK_DPI_OUT_CHANNEL_SWAP_GBR:
370 val = SWAP_GBR;
371 break;
372 case MTK_DPI_OUT_CHANNEL_SWAP_BRG:
373 val = SWAP_BRG;
374 break;
375 case MTK_DPI_OUT_CHANNEL_SWAP_RBG:
376 val = SWAP_RBG;
377 break;
378 case MTK_DPI_OUT_CHANNEL_SWAP_GRB:
379 val = SWAP_GRB;
380 break;
381 case MTK_DPI_OUT_CHANNEL_SWAP_BGR:
382 val = SWAP_BGR;
383 break;
384 default:
385 val = SWAP_RGB;
386 break;
387 }
388
389 mtk_dpi_mask(dpi, DPI_OUTPUT_SETTING,
390 val << dpi->conf->channel_swap_shift,
391 CH_SWAP_MASK << dpi->conf->channel_swap_shift);
392}
393
394static void mtk_dpi_config_yuv422_enable(struct mtk_dpi *dpi, bool enable)
395{
396 mtk_dpi_mask(dpi, DPI_CON, enable ? dpi->conf->yuv422_en_bit : 0,
397 dpi->conf->yuv422_en_bit);
398}
399
400static void mtk_dpi_config_csc_enable(struct mtk_dpi *dpi, bool enable)
401{
402 mtk_dpi_mask(dpi, DPI_CON, enable ? dpi->conf->csc_enable_bit : 0,
403 dpi->conf->csc_enable_bit);
404}
405
406static void mtk_dpi_config_swap_input(struct mtk_dpi *dpi, bool enable)
407{
408 mtk_dpi_mask(dpi, DPI_CON, enable ? IN_RB_SWAP : 0, IN_RB_SWAP);
409}
410
411static void mtk_dpi_config_2n_h_fre(struct mtk_dpi *dpi)
412{
413 mtk_dpi_mask(dpi, dpi->conf->reg_h_fre_con, H_FRE_2N, H_FRE_2N);
414}
415
416static void mtk_dpi_config_disable_edge(struct mtk_dpi *dpi)
417{
418 if (dpi->conf->edge_sel_en)
419 mtk_dpi_mask(dpi, dpi->conf->reg_h_fre_con, 0, EDGE_SEL_EN);
420}
421
422static void mtk_dpi_config_color_format(struct mtk_dpi *dpi,
423 enum mtk_dpi_out_color_format format)
424{
425 mtk_dpi_config_channel_swap(dpi, MTK_DPI_OUT_CHANNEL_SWAP_RGB);
426
427 if (format == MTK_DPI_COLOR_FORMAT_YCBCR_422) {
428 mtk_dpi_config_yuv422_enable(dpi, true);
429 mtk_dpi_config_csc_enable(dpi, true);
430
431 /*
432 * If height is smaller than 720, we need to use RGB_TO_BT601
433 * to transfer to yuv422. Otherwise, we use RGB_TO_JPEG.
434 */
435 mtk_dpi_mask(dpi, DPI_MATRIX_SET, dpi->mode.hdisplay <= 720 ?
436 MATRIX_SEL_RGB_TO_BT601 : MATRIX_SEL_RGB_TO_JPEG,
437 INT_MATRIX_SEL_MASK);
438 } else {
439 mtk_dpi_config_yuv422_enable(dpi, false);
440 mtk_dpi_config_csc_enable(dpi, false);
441 if (dpi->conf->swap_input_support)
442 mtk_dpi_config_swap_input(dpi, false);
443 }
444}
445
446static void mtk_dpi_dual_edge(struct mtk_dpi *dpi)
447{
448 if ((dpi->output_fmt == MEDIA_BUS_FMT_RGB888_2X12_LE) ||
449 (dpi->output_fmt == MEDIA_BUS_FMT_RGB888_2X12_BE)) {
450 mtk_dpi_mask(dpi, DPI_DDR_SETTING, DDR_EN | DDR_4PHASE,
451 DDR_EN | DDR_4PHASE);
452 mtk_dpi_mask(dpi, DPI_OUTPUT_SETTING,
453 dpi->output_fmt == MEDIA_BUS_FMT_RGB888_2X12_LE ?
454 EDGE_SEL : 0, EDGE_SEL);
455 if (dpi->conf->edge_cfg_in_mmsys)
456 mtk_mmsys_ddp_dpi_fmt_config(dpi->mmsys_dev, MTK_DPI_RGB888_DDR_CON);
457 } else {
458 mtk_dpi_mask(dpi, DPI_DDR_SETTING, DDR_EN | DDR_4PHASE, 0);
459 if (dpi->conf->edge_cfg_in_mmsys)
460 mtk_mmsys_ddp_dpi_fmt_config(dpi->mmsys_dev, MTK_DPI_RGB888_SDR_CON);
461 }
462}
463
464static void mtk_dpi_power_off(struct mtk_dpi *dpi)
465{
466 if (WARN_ON(dpi->refcount == 0))
467 return;
468
469 if (--dpi->refcount != 0)
470 return;
471
472 mtk_dpi_disable(dpi);
473 clk_disable_unprepare(dpi->pixel_clk);
474 clk_disable_unprepare(dpi->engine_clk);
475}
476
477static int mtk_dpi_power_on(struct mtk_dpi *dpi)
478{
479 int ret;
480
481 if (++dpi->refcount != 1)
482 return 0;
483
484 ret = clk_prepare_enable(dpi->engine_clk);
485 if (ret) {
486 dev_err(dpi->dev, "Failed to enable engine clock: %d\n", ret);
487 goto err_refcount;
488 }
489
490 ret = clk_prepare_enable(dpi->pixel_clk);
491 if (ret) {
492 dev_err(dpi->dev, "Failed to enable pixel clock: %d\n", ret);
493 goto err_pixel;
494 }
495
496 return 0;
497
498err_pixel:
499 clk_disable_unprepare(dpi->engine_clk);
500err_refcount:
501 dpi->refcount--;
502 return ret;
503}
504
505static int mtk_dpi_set_display_mode(struct mtk_dpi *dpi,
506 struct drm_display_mode *mode)
507{
508 struct mtk_dpi_polarities dpi_pol;
509 struct mtk_dpi_sync_param hsync;
510 struct mtk_dpi_sync_param vsync_lodd = { 0 };
511 struct mtk_dpi_sync_param vsync_leven = { 0 };
512 struct mtk_dpi_sync_param vsync_rodd = { 0 };
513 struct mtk_dpi_sync_param vsync_reven = { 0 };
514 struct videomode vm = { 0 };
515 unsigned long pll_rate;
516 unsigned int factor;
517
518 /* let pll_rate can fix the valid range of tvdpll (1G~2GHz) */
519 factor = dpi->conf->cal_factor(mode->clock);
520 drm_display_mode_to_videomode(mode, &vm);
521 pll_rate = vm.pixelclock * factor;
522
523 dev_dbg(dpi->dev, "Want PLL %lu Hz, pixel clock %lu Hz\n",
524 pll_rate, vm.pixelclock);
525
526 clk_set_rate(dpi->tvd_clk, pll_rate);
527 pll_rate = clk_get_rate(dpi->tvd_clk);
528
529 /*
530 * Depending on the IP version, we may output a different amount of
531 * pixels for each iteration: divide the clock by this number and
532 * adjust the display porches accordingly.
533 */
534 vm.pixelclock = pll_rate / factor;
535 vm.pixelclock /= dpi->conf->pixels_per_iter;
536
537 if ((dpi->output_fmt == MEDIA_BUS_FMT_RGB888_2X12_LE) ||
538 (dpi->output_fmt == MEDIA_BUS_FMT_RGB888_2X12_BE))
539 clk_set_rate(dpi->pixel_clk, vm.pixelclock * 2);
540 else
541 clk_set_rate(dpi->pixel_clk, vm.pixelclock);
542
543
544 vm.pixelclock = clk_get_rate(dpi->pixel_clk);
545
546 dev_dbg(dpi->dev, "Got PLL %lu Hz, pixel clock %lu Hz\n",
547 pll_rate, vm.pixelclock);
548
549 dpi_pol.ck_pol = MTK_DPI_POLARITY_FALLING;
550 dpi_pol.de_pol = MTK_DPI_POLARITY_RISING;
551 dpi_pol.hsync_pol = vm.flags & DISPLAY_FLAGS_HSYNC_HIGH ?
552 MTK_DPI_POLARITY_FALLING : MTK_DPI_POLARITY_RISING;
553 dpi_pol.vsync_pol = vm.flags & DISPLAY_FLAGS_VSYNC_HIGH ?
554 MTK_DPI_POLARITY_FALLING : MTK_DPI_POLARITY_RISING;
555
556 /*
557 * Depending on the IP version, we may output a different amount of
558 * pixels for each iteration: divide the clock by this number and
559 * adjust the display porches accordingly.
560 */
561 hsync.sync_width = vm.hsync_len / dpi->conf->pixels_per_iter;
562 hsync.back_porch = vm.hback_porch / dpi->conf->pixels_per_iter;
563 hsync.front_porch = vm.hfront_porch / dpi->conf->pixels_per_iter;
564
565 hsync.shift_half_line = false;
566 vsync_lodd.sync_width = vm.vsync_len;
567 vsync_lodd.back_porch = vm.vback_porch;
568 vsync_lodd.front_porch = vm.vfront_porch;
569 vsync_lodd.shift_half_line = false;
570
571 if (vm.flags & DISPLAY_FLAGS_INTERLACED &&
572 mode->flags & DRM_MODE_FLAG_3D_MASK) {
573 vsync_leven = vsync_lodd;
574 vsync_rodd = vsync_lodd;
575 vsync_reven = vsync_lodd;
576 vsync_leven.shift_half_line = true;
577 vsync_reven.shift_half_line = true;
578 } else if (vm.flags & DISPLAY_FLAGS_INTERLACED &&
579 !(mode->flags & DRM_MODE_FLAG_3D_MASK)) {
580 vsync_leven = vsync_lodd;
581 vsync_leven.shift_half_line = true;
582 } else if (!(vm.flags & DISPLAY_FLAGS_INTERLACED) &&
583 mode->flags & DRM_MODE_FLAG_3D_MASK) {
584 vsync_rodd = vsync_lodd;
585 }
586 mtk_dpi_sw_reset(dpi, true);
587 mtk_dpi_config_pol(dpi, &dpi_pol);
588
589 mtk_dpi_config_hsync(dpi, &hsync);
590 mtk_dpi_config_vsync_lodd(dpi, &vsync_lodd);
591 mtk_dpi_config_vsync_rodd(dpi, &vsync_rodd);
592 mtk_dpi_config_vsync_leven(dpi, &vsync_leven);
593 mtk_dpi_config_vsync_reven(dpi, &vsync_reven);
594
595 mtk_dpi_config_3d(dpi, !!(mode->flags & DRM_MODE_FLAG_3D_MASK));
596 mtk_dpi_config_interface(dpi, !!(vm.flags &
597 DISPLAY_FLAGS_INTERLACED));
598 if (vm.flags & DISPLAY_FLAGS_INTERLACED)
599 mtk_dpi_config_fb_size(dpi, vm.hactive, vm.vactive >> 1);
600 else
601 mtk_dpi_config_fb_size(dpi, vm.hactive, vm.vactive);
602
603 mtk_dpi_config_channel_limit(dpi);
604 mtk_dpi_config_bit_num(dpi, dpi->bit_num);
605 mtk_dpi_config_channel_swap(dpi, dpi->channel_swap);
606 mtk_dpi_config_color_format(dpi, dpi->color_format);
607 if (dpi->conf->support_direct_pin) {
608 mtk_dpi_config_yc_map(dpi, dpi->yc_map);
609 mtk_dpi_config_2n_h_fre(dpi);
610 mtk_dpi_dual_edge(dpi);
611 mtk_dpi_config_disable_edge(dpi);
612 }
613 if (dpi->conf->input_2pixel) {
614 mtk_dpi_mask(dpi, DPI_CON, DPINTF_INPUT_2P_EN,
615 DPINTF_INPUT_2P_EN);
616 }
617 mtk_dpi_sw_reset(dpi, false);
618
619 return 0;
620}
621
622static u32 *mtk_dpi_bridge_atomic_get_output_bus_fmts(struct drm_bridge *bridge,
623 struct drm_bridge_state *bridge_state,
624 struct drm_crtc_state *crtc_state,
625 struct drm_connector_state *conn_state,
626 unsigned int *num_output_fmts)
627{
628 struct mtk_dpi *dpi = bridge_to_dpi(bridge);
629 u32 *output_fmts;
630
631 *num_output_fmts = 0;
632
633 if (!dpi->conf->output_fmts) {
634 dev_err(dpi->dev, "output_fmts should not be null\n");
635 return NULL;
636 }
637
638 output_fmts = kcalloc(dpi->conf->num_output_fmts, sizeof(*output_fmts),
639 GFP_KERNEL);
640 if (!output_fmts)
641 return NULL;
642
643 *num_output_fmts = dpi->conf->num_output_fmts;
644
645 memcpy(output_fmts, dpi->conf->output_fmts,
646 sizeof(*output_fmts) * dpi->conf->num_output_fmts);
647
648 return output_fmts;
649}
650
651static u32 *mtk_dpi_bridge_atomic_get_input_bus_fmts(struct drm_bridge *bridge,
652 struct drm_bridge_state *bridge_state,
653 struct drm_crtc_state *crtc_state,
654 struct drm_connector_state *conn_state,
655 u32 output_fmt,
656 unsigned int *num_input_fmts)
657{
658 u32 *input_fmts;
659
660 *num_input_fmts = 0;
661
662 input_fmts = kcalloc(1, sizeof(*input_fmts),
663 GFP_KERNEL);
664 if (!input_fmts)
665 return NULL;
666
667 *num_input_fmts = 1;
668 input_fmts[0] = MEDIA_BUS_FMT_RGB888_1X24;
669
670 return input_fmts;
671}
672
673static int mtk_dpi_bridge_atomic_check(struct drm_bridge *bridge,
674 struct drm_bridge_state *bridge_state,
675 struct drm_crtc_state *crtc_state,
676 struct drm_connector_state *conn_state)
677{
678 struct mtk_dpi *dpi = bridge_to_dpi(bridge);
679 unsigned int out_bus_format;
680
681 out_bus_format = bridge_state->output_bus_cfg.format;
682
683 if (out_bus_format == MEDIA_BUS_FMT_FIXED)
684 if (dpi->conf->num_output_fmts)
685 out_bus_format = dpi->conf->output_fmts[0];
686
687 dev_dbg(dpi->dev, "input format 0x%04x, output format 0x%04x\n",
688 bridge_state->input_bus_cfg.format,
689 bridge_state->output_bus_cfg.format);
690
691 dpi->output_fmt = out_bus_format;
692 dpi->bit_num = MTK_DPI_OUT_BIT_NUM_8BITS;
693 dpi->channel_swap = MTK_DPI_OUT_CHANNEL_SWAP_RGB;
694 dpi->yc_map = MTK_DPI_OUT_YC_MAP_RGB;
695 if (out_bus_format == MEDIA_BUS_FMT_YUYV8_1X16)
696 dpi->color_format = MTK_DPI_COLOR_FORMAT_YCBCR_422;
697 else
698 dpi->color_format = MTK_DPI_COLOR_FORMAT_RGB;
699
700 return 0;
701}
702
703static int mtk_dpi_bridge_attach(struct drm_bridge *bridge,
704 enum drm_bridge_attach_flags flags)
705{
706 struct mtk_dpi *dpi = bridge_to_dpi(bridge);
707
708 return drm_bridge_attach(bridge->encoder, dpi->next_bridge,
709 &dpi->bridge, flags);
710}
711
712static void mtk_dpi_bridge_mode_set(struct drm_bridge *bridge,
713 const struct drm_display_mode *mode,
714 const struct drm_display_mode *adjusted_mode)
715{
716 struct mtk_dpi *dpi = bridge_to_dpi(bridge);
717
718 drm_mode_copy(&dpi->mode, adjusted_mode);
719}
720
721static void mtk_dpi_bridge_disable(struct drm_bridge *bridge)
722{
723 struct mtk_dpi *dpi = bridge_to_dpi(bridge);
724
725 mtk_dpi_power_off(dpi);
726
727 if (dpi->pinctrl && dpi->pins_gpio)
728 pinctrl_select_state(dpi->pinctrl, dpi->pins_gpio);
729}
730
731static void mtk_dpi_bridge_enable(struct drm_bridge *bridge)
732{
733 struct mtk_dpi *dpi = bridge_to_dpi(bridge);
734
735 if (dpi->pinctrl && dpi->pins_dpi)
736 pinctrl_select_state(dpi->pinctrl, dpi->pins_dpi);
737
738 mtk_dpi_power_on(dpi);
739 mtk_dpi_set_display_mode(dpi, &dpi->mode);
740 mtk_dpi_enable(dpi);
741}
742
743static enum drm_mode_status
744mtk_dpi_bridge_mode_valid(struct drm_bridge *bridge,
745 const struct drm_display_info *info,
746 const struct drm_display_mode *mode)
747{
748 struct mtk_dpi *dpi = bridge_to_dpi(bridge);
749
750 if (mode->clock > dpi->conf->max_clock_khz)
751 return MODE_CLOCK_HIGH;
752
753 return MODE_OK;
754}
755
756static const struct drm_bridge_funcs mtk_dpi_bridge_funcs = {
757 .attach = mtk_dpi_bridge_attach,
758 .mode_set = mtk_dpi_bridge_mode_set,
759 .mode_valid = mtk_dpi_bridge_mode_valid,
760 .disable = mtk_dpi_bridge_disable,
761 .enable = mtk_dpi_bridge_enable,
762 .atomic_check = mtk_dpi_bridge_atomic_check,
763 .atomic_get_output_bus_fmts = mtk_dpi_bridge_atomic_get_output_bus_fmts,
764 .atomic_get_input_bus_fmts = mtk_dpi_bridge_atomic_get_input_bus_fmts,
765 .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
766 .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
767 .atomic_reset = drm_atomic_helper_bridge_reset,
768};
769
770void mtk_dpi_start(struct device *dev)
771{
772 struct mtk_dpi *dpi = dev_get_drvdata(dev);
773
774 mtk_dpi_power_on(dpi);
775}
776
777void mtk_dpi_stop(struct device *dev)
778{
779 struct mtk_dpi *dpi = dev_get_drvdata(dev);
780
781 mtk_dpi_power_off(dpi);
782}
783
784unsigned int mtk_dpi_encoder_index(struct device *dev)
785{
786 struct mtk_dpi *dpi = dev_get_drvdata(dev);
787 unsigned int encoder_index = drm_encoder_index(&dpi->encoder);
788
789 dev_dbg(dev, "encoder index:%d\n", encoder_index);
790 return encoder_index;
791}
792
793static int mtk_dpi_bind(struct device *dev, struct device *master, void *data)
794{
795 struct mtk_dpi *dpi = dev_get_drvdata(dev);
796 struct drm_device *drm_dev = data;
797 struct mtk_drm_private *priv = drm_dev->dev_private;
798 int ret;
799
800 dpi->mmsys_dev = priv->mmsys_dev;
801 ret = drm_simple_encoder_init(drm_dev, &dpi->encoder,
802 DRM_MODE_ENCODER_TMDS);
803 if (ret) {
804 dev_err(dev, "Failed to initialize decoder: %d\n", ret);
805 return ret;
806 }
807
808 dpi->encoder.possible_crtcs = mtk_drm_find_possible_crtc_by_comp(drm_dev, dpi->dev);
809
810 ret = drm_bridge_attach(&dpi->encoder, &dpi->bridge, NULL,
811 DRM_BRIDGE_ATTACH_NO_CONNECTOR);
812 if (ret)
813 goto err_cleanup;
814
815 dpi->connector = drm_bridge_connector_init(drm_dev, &dpi->encoder);
816 if (IS_ERR(dpi->connector)) {
817 dev_err(dev, "Unable to create bridge connector\n");
818 ret = PTR_ERR(dpi->connector);
819 goto err_cleanup;
820 }
821 drm_connector_attach_encoder(dpi->connector, &dpi->encoder);
822
823 return 0;
824
825err_cleanup:
826 drm_encoder_cleanup(&dpi->encoder);
827 return ret;
828}
829
830static void mtk_dpi_unbind(struct device *dev, struct device *master,
831 void *data)
832{
833 struct mtk_dpi *dpi = dev_get_drvdata(dev);
834
835 drm_encoder_cleanup(&dpi->encoder);
836}
837
838static const struct component_ops mtk_dpi_component_ops = {
839 .bind = mtk_dpi_bind,
840 .unbind = mtk_dpi_unbind,
841};
842
843static unsigned int mt8173_calculate_factor(int clock)
844{
845 if (clock <= 27000)
846 return 3 << 4;
847 else if (clock <= 84000)
848 return 3 << 3;
849 else if (clock <= 167000)
850 return 3 << 2;
851 else
852 return 3 << 1;
853}
854
855static unsigned int mt2701_calculate_factor(int clock)
856{
857 if (clock <= 64000)
858 return 4;
859 else if (clock <= 128000)
860 return 2;
861 else
862 return 1;
863}
864
865static unsigned int mt8183_calculate_factor(int clock)
866{
867 if (clock <= 27000)
868 return 8;
869 else if (clock <= 167000)
870 return 4;
871 else
872 return 2;
873}
874
875static unsigned int mt8195_dpintf_calculate_factor(int clock)
876{
877 if (clock < 70000)
878 return 4;
879 else if (clock < 200000)
880 return 2;
881 else
882 return 1;
883}
884
885static const u32 mt8173_output_fmts[] = {
886 MEDIA_BUS_FMT_RGB888_1X24,
887};
888
889static const u32 mt8183_output_fmts[] = {
890 MEDIA_BUS_FMT_RGB888_2X12_LE,
891 MEDIA_BUS_FMT_RGB888_2X12_BE,
892};
893
894static const u32 mt8195_output_fmts[] = {
895 MEDIA_BUS_FMT_RGB888_1X24,
896 MEDIA_BUS_FMT_YUYV8_1X16,
897};
898
899static const struct mtk_dpi_conf mt8173_conf = {
900 .cal_factor = mt8173_calculate_factor,
901 .reg_h_fre_con = 0xe0,
902 .max_clock_khz = 300000,
903 .output_fmts = mt8173_output_fmts,
904 .num_output_fmts = ARRAY_SIZE(mt8173_output_fmts),
905 .pixels_per_iter = 1,
906 .is_ck_de_pol = true,
907 .swap_input_support = true,
908 .support_direct_pin = true,
909 .dimension_mask = HPW_MASK,
910 .hvsize_mask = HSIZE_MASK,
911 .channel_swap_shift = CH_SWAP,
912 .yuv422_en_bit = YUV422_EN,
913 .csc_enable_bit = CSC_ENABLE,
914};
915
916static const struct mtk_dpi_conf mt2701_conf = {
917 .cal_factor = mt2701_calculate_factor,
918 .reg_h_fre_con = 0xb0,
919 .edge_sel_en = true,
920 .max_clock_khz = 150000,
921 .output_fmts = mt8173_output_fmts,
922 .num_output_fmts = ARRAY_SIZE(mt8173_output_fmts),
923 .pixels_per_iter = 1,
924 .is_ck_de_pol = true,
925 .swap_input_support = true,
926 .support_direct_pin = true,
927 .dimension_mask = HPW_MASK,
928 .hvsize_mask = HSIZE_MASK,
929 .channel_swap_shift = CH_SWAP,
930 .yuv422_en_bit = YUV422_EN,
931 .csc_enable_bit = CSC_ENABLE,
932};
933
934static const struct mtk_dpi_conf mt8183_conf = {
935 .cal_factor = mt8183_calculate_factor,
936 .reg_h_fre_con = 0xe0,
937 .max_clock_khz = 100000,
938 .output_fmts = mt8183_output_fmts,
939 .num_output_fmts = ARRAY_SIZE(mt8183_output_fmts),
940 .pixels_per_iter = 1,
941 .is_ck_de_pol = true,
942 .swap_input_support = true,
943 .support_direct_pin = true,
944 .dimension_mask = HPW_MASK,
945 .hvsize_mask = HSIZE_MASK,
946 .channel_swap_shift = CH_SWAP,
947 .yuv422_en_bit = YUV422_EN,
948 .csc_enable_bit = CSC_ENABLE,
949};
950
951static const struct mtk_dpi_conf mt8186_conf = {
952 .cal_factor = mt8183_calculate_factor,
953 .reg_h_fre_con = 0xe0,
954 .max_clock_khz = 150000,
955 .output_fmts = mt8183_output_fmts,
956 .num_output_fmts = ARRAY_SIZE(mt8183_output_fmts),
957 .edge_cfg_in_mmsys = true,
958 .pixels_per_iter = 1,
959 .is_ck_de_pol = true,
960 .swap_input_support = true,
961 .support_direct_pin = true,
962 .dimension_mask = HPW_MASK,
963 .hvsize_mask = HSIZE_MASK,
964 .channel_swap_shift = CH_SWAP,
965 .yuv422_en_bit = YUV422_EN,
966 .csc_enable_bit = CSC_ENABLE,
967};
968
969static const struct mtk_dpi_conf mt8192_conf = {
970 .cal_factor = mt8183_calculate_factor,
971 .reg_h_fre_con = 0xe0,
972 .max_clock_khz = 150000,
973 .output_fmts = mt8183_output_fmts,
974 .num_output_fmts = ARRAY_SIZE(mt8183_output_fmts),
975 .pixels_per_iter = 1,
976 .is_ck_de_pol = true,
977 .swap_input_support = true,
978 .support_direct_pin = true,
979 .dimension_mask = HPW_MASK,
980 .hvsize_mask = HSIZE_MASK,
981 .channel_swap_shift = CH_SWAP,
982 .yuv422_en_bit = YUV422_EN,
983 .csc_enable_bit = CSC_ENABLE,
984};
985
986static const struct mtk_dpi_conf mt8195_dpintf_conf = {
987 .cal_factor = mt8195_dpintf_calculate_factor,
988 .max_clock_khz = 600000,
989 .output_fmts = mt8195_output_fmts,
990 .num_output_fmts = ARRAY_SIZE(mt8195_output_fmts),
991 .pixels_per_iter = 4,
992 .input_2pixel = true,
993 .dimension_mask = DPINTF_HPW_MASK,
994 .hvsize_mask = DPINTF_HSIZE_MASK,
995 .channel_swap_shift = DPINTF_CH_SWAP,
996 .yuv422_en_bit = DPINTF_YUV422_EN,
997 .csc_enable_bit = DPINTF_CSC_ENABLE,
998};
999
1000static int mtk_dpi_probe(struct platform_device *pdev)
1001{
1002 struct device *dev = &pdev->dev;
1003 struct mtk_dpi *dpi;
1004 int ret;
1005
1006 dpi = devm_kzalloc(dev, sizeof(*dpi), GFP_KERNEL);
1007 if (!dpi)
1008 return -ENOMEM;
1009
1010 dpi->dev = dev;
1011 dpi->conf = (struct mtk_dpi_conf *)of_device_get_match_data(dev);
1012 dpi->output_fmt = MEDIA_BUS_FMT_RGB888_1X24;
1013
1014 dpi->pinctrl = devm_pinctrl_get(&pdev->dev);
1015 if (IS_ERR(dpi->pinctrl)) {
1016 dpi->pinctrl = NULL;
1017 dev_dbg(&pdev->dev, "Cannot find pinctrl!\n");
1018 }
1019 if (dpi->pinctrl) {
1020 dpi->pins_gpio = pinctrl_lookup_state(dpi->pinctrl, "sleep");
1021 if (IS_ERR(dpi->pins_gpio)) {
1022 dpi->pins_gpio = NULL;
1023 dev_dbg(&pdev->dev, "Cannot find pinctrl idle!\n");
1024 }
1025 if (dpi->pins_gpio)
1026 pinctrl_select_state(dpi->pinctrl, dpi->pins_gpio);
1027
1028 dpi->pins_dpi = pinctrl_lookup_state(dpi->pinctrl, "default");
1029 if (IS_ERR(dpi->pins_dpi)) {
1030 dpi->pins_dpi = NULL;
1031 dev_dbg(&pdev->dev, "Cannot find pinctrl active!\n");
1032 }
1033 }
1034 dpi->regs = devm_platform_ioremap_resource(pdev, 0);
1035 if (IS_ERR(dpi->regs))
1036 return dev_err_probe(dev, PTR_ERR(dpi->regs),
1037 "Failed to ioremap mem resource\n");
1038
1039 dpi->engine_clk = devm_clk_get(dev, "engine");
1040 if (IS_ERR(dpi->engine_clk))
1041 return dev_err_probe(dev, PTR_ERR(dpi->engine_clk),
1042 "Failed to get engine clock\n");
1043
1044 dpi->pixel_clk = devm_clk_get(dev, "pixel");
1045 if (IS_ERR(dpi->pixel_clk))
1046 return dev_err_probe(dev, PTR_ERR(dpi->pixel_clk),
1047 "Failed to get pixel clock\n");
1048
1049 dpi->tvd_clk = devm_clk_get(dev, "pll");
1050 if (IS_ERR(dpi->tvd_clk))
1051 return dev_err_probe(dev, PTR_ERR(dpi->tvd_clk),
1052 "Failed to get tvdpll clock\n");
1053
1054 dpi->irq = platform_get_irq(pdev, 0);
1055 if (dpi->irq < 0)
1056 return dpi->irq;
1057
1058 dpi->next_bridge = devm_drm_of_get_bridge(dev, dev->of_node, 0, 0);
1059 if (IS_ERR(dpi->next_bridge))
1060 return dev_err_probe(dev, PTR_ERR(dpi->next_bridge),
1061 "Failed to get bridge\n");
1062
1063 dev_info(dev, "Found bridge node: %pOF\n", dpi->next_bridge->of_node);
1064
1065 platform_set_drvdata(pdev, dpi);
1066
1067 dpi->bridge.funcs = &mtk_dpi_bridge_funcs;
1068 dpi->bridge.of_node = dev->of_node;
1069 dpi->bridge.type = DRM_MODE_CONNECTOR_DPI;
1070
1071 ret = devm_drm_bridge_add(dev, &dpi->bridge);
1072 if (ret)
1073 return ret;
1074
1075 ret = component_add(dev, &mtk_dpi_component_ops);
1076 if (ret)
1077 return dev_err_probe(dev, ret, "Failed to add component.\n");
1078
1079 return 0;
1080}
1081
1082static void mtk_dpi_remove(struct platform_device *pdev)
1083{
1084 component_del(&pdev->dev, &mtk_dpi_component_ops);
1085}
1086
1087static const struct of_device_id mtk_dpi_of_ids[] = {
1088 { .compatible = "mediatek,mt2701-dpi", .data = &mt2701_conf },
1089 { .compatible = "mediatek,mt8173-dpi", .data = &mt8173_conf },
1090 { .compatible = "mediatek,mt8183-dpi", .data = &mt8183_conf },
1091 { .compatible = "mediatek,mt8186-dpi", .data = &mt8186_conf },
1092 { .compatible = "mediatek,mt8188-dp-intf", .data = &mt8195_dpintf_conf },
1093 { .compatible = "mediatek,mt8192-dpi", .data = &mt8192_conf },
1094 { .compatible = "mediatek,mt8195-dp-intf", .data = &mt8195_dpintf_conf },
1095 { /* sentinel */ },
1096};
1097MODULE_DEVICE_TABLE(of, mtk_dpi_of_ids);
1098
1099struct platform_driver mtk_dpi_driver = {
1100 .probe = mtk_dpi_probe,
1101 .remove_new = mtk_dpi_remove,
1102 .driver = {
1103 .name = "mediatek-dpi",
1104 .of_match_table = mtk_dpi_of_ids,
1105 },
1106};