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1/*
2 * Copyright (c) 2014 MediaTek Inc.
3 * Author: Jie Qiu <jie.qiu@mediatek.com>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 */
14#include <drm/drmP.h>
15#include <drm/drm_crtc.h>
16#include <drm/drm_crtc_helper.h>
17#include <linux/kernel.h>
18#include <linux/component.h>
19#include <linux/platform_device.h>
20#include <linux/of.h>
21#include <linux/of_graph.h>
22#include <linux/interrupt.h>
23#include <linux/types.h>
24#include <linux/clk.h>
25
26#include "mtk_dpi_regs.h"
27#include "mtk_drm_ddp_comp.h"
28
29enum mtk_dpi_out_bit_num {
30 MTK_DPI_OUT_BIT_NUM_8BITS,
31 MTK_DPI_OUT_BIT_NUM_10BITS,
32 MTK_DPI_OUT_BIT_NUM_12BITS,
33 MTK_DPI_OUT_BIT_NUM_16BITS
34};
35
36enum mtk_dpi_out_yc_map {
37 MTK_DPI_OUT_YC_MAP_RGB,
38 MTK_DPI_OUT_YC_MAP_CYCY,
39 MTK_DPI_OUT_YC_MAP_YCYC,
40 MTK_DPI_OUT_YC_MAP_CY,
41 MTK_DPI_OUT_YC_MAP_YC
42};
43
44enum mtk_dpi_out_channel_swap {
45 MTK_DPI_OUT_CHANNEL_SWAP_RGB,
46 MTK_DPI_OUT_CHANNEL_SWAP_GBR,
47 MTK_DPI_OUT_CHANNEL_SWAP_BRG,
48 MTK_DPI_OUT_CHANNEL_SWAP_RBG,
49 MTK_DPI_OUT_CHANNEL_SWAP_GRB,
50 MTK_DPI_OUT_CHANNEL_SWAP_BGR
51};
52
53enum mtk_dpi_out_color_format {
54 MTK_DPI_COLOR_FORMAT_RGB,
55 MTK_DPI_COLOR_FORMAT_RGB_FULL,
56 MTK_DPI_COLOR_FORMAT_YCBCR_444,
57 MTK_DPI_COLOR_FORMAT_YCBCR_422,
58 MTK_DPI_COLOR_FORMAT_XV_YCC,
59 MTK_DPI_COLOR_FORMAT_YCBCR_444_FULL,
60 MTK_DPI_COLOR_FORMAT_YCBCR_422_FULL
61};
62
63struct mtk_dpi {
64 struct mtk_ddp_comp ddp_comp;
65 struct drm_encoder encoder;
66 struct drm_bridge *bridge;
67 void __iomem *regs;
68 struct device *dev;
69 struct clk *engine_clk;
70 struct clk *pixel_clk;
71 struct clk *tvd_clk;
72 int irq;
73 struct drm_display_mode mode;
74 enum mtk_dpi_out_color_format color_format;
75 enum mtk_dpi_out_yc_map yc_map;
76 enum mtk_dpi_out_bit_num bit_num;
77 enum mtk_dpi_out_channel_swap channel_swap;
78 bool power_sta;
79 u8 power_ctl;
80};
81
82static inline struct mtk_dpi *mtk_dpi_from_encoder(struct drm_encoder *e)
83{
84 return container_of(e, struct mtk_dpi, encoder);
85}
86
87enum mtk_dpi_polarity {
88 MTK_DPI_POLARITY_RISING,
89 MTK_DPI_POLARITY_FALLING,
90};
91
92enum mtk_dpi_power_ctl {
93 DPI_POWER_START = BIT(0),
94 DPI_POWER_ENABLE = BIT(1),
95};
96
97struct mtk_dpi_polarities {
98 enum mtk_dpi_polarity de_pol;
99 enum mtk_dpi_polarity ck_pol;
100 enum mtk_dpi_polarity hsync_pol;
101 enum mtk_dpi_polarity vsync_pol;
102};
103
104struct mtk_dpi_sync_param {
105 u32 sync_width;
106 u32 front_porch;
107 u32 back_porch;
108 bool shift_half_line;
109};
110
111struct mtk_dpi_yc_limit {
112 u16 y_top;
113 u16 y_bottom;
114 u16 c_top;
115 u16 c_bottom;
116};
117
118static void mtk_dpi_mask(struct mtk_dpi *dpi, u32 offset, u32 val, u32 mask)
119{
120 u32 tmp = readl(dpi->regs + offset) & ~mask;
121
122 tmp |= (val & mask);
123 writel(tmp, dpi->regs + offset);
124}
125
126static void mtk_dpi_sw_reset(struct mtk_dpi *dpi, bool reset)
127{
128 mtk_dpi_mask(dpi, DPI_RET, reset ? RST : 0, RST);
129}
130
131static void mtk_dpi_enable(struct mtk_dpi *dpi)
132{
133 mtk_dpi_mask(dpi, DPI_EN, EN, EN);
134}
135
136static void mtk_dpi_disable(struct mtk_dpi *dpi)
137{
138 mtk_dpi_mask(dpi, DPI_EN, 0, EN);
139}
140
141static void mtk_dpi_config_hsync(struct mtk_dpi *dpi,
142 struct mtk_dpi_sync_param *sync)
143{
144 mtk_dpi_mask(dpi, DPI_TGEN_HWIDTH,
145 sync->sync_width << HPW, HPW_MASK);
146 mtk_dpi_mask(dpi, DPI_TGEN_HPORCH,
147 sync->back_porch << HBP, HBP_MASK);
148 mtk_dpi_mask(dpi, DPI_TGEN_HPORCH, sync->front_porch << HFP,
149 HFP_MASK);
150}
151
152static void mtk_dpi_config_vsync(struct mtk_dpi *dpi,
153 struct mtk_dpi_sync_param *sync,
154 u32 width_addr, u32 porch_addr)
155{
156 mtk_dpi_mask(dpi, width_addr,
157 sync->sync_width << VSYNC_WIDTH_SHIFT,
158 VSYNC_WIDTH_MASK);
159 mtk_dpi_mask(dpi, width_addr,
160 sync->shift_half_line << VSYNC_HALF_LINE_SHIFT,
161 VSYNC_HALF_LINE_MASK);
162 mtk_dpi_mask(dpi, porch_addr,
163 sync->back_porch << VSYNC_BACK_PORCH_SHIFT,
164 VSYNC_BACK_PORCH_MASK);
165 mtk_dpi_mask(dpi, porch_addr,
166 sync->front_porch << VSYNC_FRONT_PORCH_SHIFT,
167 VSYNC_FRONT_PORCH_MASK);
168}
169
170static void mtk_dpi_config_vsync_lodd(struct mtk_dpi *dpi,
171 struct mtk_dpi_sync_param *sync)
172{
173 mtk_dpi_config_vsync(dpi, sync, DPI_TGEN_VWIDTH, DPI_TGEN_VPORCH);
174}
175
176static void mtk_dpi_config_vsync_leven(struct mtk_dpi *dpi,
177 struct mtk_dpi_sync_param *sync)
178{
179 mtk_dpi_config_vsync(dpi, sync, DPI_TGEN_VWIDTH_LEVEN,
180 DPI_TGEN_VPORCH_LEVEN);
181}
182
183static void mtk_dpi_config_vsync_rodd(struct mtk_dpi *dpi,
184 struct mtk_dpi_sync_param *sync)
185{
186 mtk_dpi_config_vsync(dpi, sync, DPI_TGEN_VWIDTH_RODD,
187 DPI_TGEN_VPORCH_RODD);
188}
189
190static void mtk_dpi_config_vsync_reven(struct mtk_dpi *dpi,
191 struct mtk_dpi_sync_param *sync)
192{
193 mtk_dpi_config_vsync(dpi, sync, DPI_TGEN_VWIDTH_REVEN,
194 DPI_TGEN_VPORCH_REVEN);
195}
196
197static void mtk_dpi_config_pol(struct mtk_dpi *dpi,
198 struct mtk_dpi_polarities *dpi_pol)
199{
200 unsigned int pol;
201
202 pol = (dpi_pol->ck_pol == MTK_DPI_POLARITY_RISING ? 0 : CK_POL) |
203 (dpi_pol->de_pol == MTK_DPI_POLARITY_RISING ? 0 : DE_POL) |
204 (dpi_pol->hsync_pol == MTK_DPI_POLARITY_RISING ? 0 : HSYNC_POL) |
205 (dpi_pol->vsync_pol == MTK_DPI_POLARITY_RISING ? 0 : VSYNC_POL);
206 mtk_dpi_mask(dpi, DPI_OUTPUT_SETTING, pol,
207 CK_POL | DE_POL | HSYNC_POL | VSYNC_POL);
208}
209
210static void mtk_dpi_config_3d(struct mtk_dpi *dpi, bool en_3d)
211{
212 mtk_dpi_mask(dpi, DPI_CON, en_3d ? TDFP_EN : 0, TDFP_EN);
213}
214
215static void mtk_dpi_config_interface(struct mtk_dpi *dpi, bool inter)
216{
217 mtk_dpi_mask(dpi, DPI_CON, inter ? INTL_EN : 0, INTL_EN);
218}
219
220static void mtk_dpi_config_fb_size(struct mtk_dpi *dpi, u32 width, u32 height)
221{
222 mtk_dpi_mask(dpi, DPI_SIZE, width << HSIZE, HSIZE_MASK);
223 mtk_dpi_mask(dpi, DPI_SIZE, height << VSIZE, VSIZE_MASK);
224}
225
226static void mtk_dpi_config_channel_limit(struct mtk_dpi *dpi,
227 struct mtk_dpi_yc_limit *limit)
228{
229 mtk_dpi_mask(dpi, DPI_Y_LIMIT, limit->y_bottom << Y_LIMINT_BOT,
230 Y_LIMINT_BOT_MASK);
231 mtk_dpi_mask(dpi, DPI_Y_LIMIT, limit->y_top << Y_LIMINT_TOP,
232 Y_LIMINT_TOP_MASK);
233 mtk_dpi_mask(dpi, DPI_C_LIMIT, limit->c_bottom << C_LIMIT_BOT,
234 C_LIMIT_BOT_MASK);
235 mtk_dpi_mask(dpi, DPI_C_LIMIT, limit->c_top << C_LIMIT_TOP,
236 C_LIMIT_TOP_MASK);
237}
238
239static void mtk_dpi_config_bit_num(struct mtk_dpi *dpi,
240 enum mtk_dpi_out_bit_num num)
241{
242 u32 val;
243
244 switch (num) {
245 case MTK_DPI_OUT_BIT_NUM_8BITS:
246 val = OUT_BIT_8;
247 break;
248 case MTK_DPI_OUT_BIT_NUM_10BITS:
249 val = OUT_BIT_10;
250 break;
251 case MTK_DPI_OUT_BIT_NUM_12BITS:
252 val = OUT_BIT_12;
253 break;
254 case MTK_DPI_OUT_BIT_NUM_16BITS:
255 val = OUT_BIT_16;
256 break;
257 default:
258 val = OUT_BIT_8;
259 break;
260 }
261 mtk_dpi_mask(dpi, DPI_OUTPUT_SETTING, val << OUT_BIT,
262 OUT_BIT_MASK);
263}
264
265static void mtk_dpi_config_yc_map(struct mtk_dpi *dpi,
266 enum mtk_dpi_out_yc_map map)
267{
268 u32 val;
269
270 switch (map) {
271 case MTK_DPI_OUT_YC_MAP_RGB:
272 val = YC_MAP_RGB;
273 break;
274 case MTK_DPI_OUT_YC_MAP_CYCY:
275 val = YC_MAP_CYCY;
276 break;
277 case MTK_DPI_OUT_YC_MAP_YCYC:
278 val = YC_MAP_YCYC;
279 break;
280 case MTK_DPI_OUT_YC_MAP_CY:
281 val = YC_MAP_CY;
282 break;
283 case MTK_DPI_OUT_YC_MAP_YC:
284 val = YC_MAP_YC;
285 break;
286 default:
287 val = YC_MAP_RGB;
288 break;
289 }
290
291 mtk_dpi_mask(dpi, DPI_OUTPUT_SETTING, val << YC_MAP, YC_MAP_MASK);
292}
293
294static void mtk_dpi_config_channel_swap(struct mtk_dpi *dpi,
295 enum mtk_dpi_out_channel_swap swap)
296{
297 u32 val;
298
299 switch (swap) {
300 case MTK_DPI_OUT_CHANNEL_SWAP_RGB:
301 val = SWAP_RGB;
302 break;
303 case MTK_DPI_OUT_CHANNEL_SWAP_GBR:
304 val = SWAP_GBR;
305 break;
306 case MTK_DPI_OUT_CHANNEL_SWAP_BRG:
307 val = SWAP_BRG;
308 break;
309 case MTK_DPI_OUT_CHANNEL_SWAP_RBG:
310 val = SWAP_RBG;
311 break;
312 case MTK_DPI_OUT_CHANNEL_SWAP_GRB:
313 val = SWAP_GRB;
314 break;
315 case MTK_DPI_OUT_CHANNEL_SWAP_BGR:
316 val = SWAP_BGR;
317 break;
318 default:
319 val = SWAP_RGB;
320 break;
321 }
322
323 mtk_dpi_mask(dpi, DPI_OUTPUT_SETTING, val << CH_SWAP, CH_SWAP_MASK);
324}
325
326static void mtk_dpi_config_yuv422_enable(struct mtk_dpi *dpi, bool enable)
327{
328 mtk_dpi_mask(dpi, DPI_CON, enable ? YUV422_EN : 0, YUV422_EN);
329}
330
331static void mtk_dpi_config_csc_enable(struct mtk_dpi *dpi, bool enable)
332{
333 mtk_dpi_mask(dpi, DPI_CON, enable ? CSC_ENABLE : 0, CSC_ENABLE);
334}
335
336static void mtk_dpi_config_swap_input(struct mtk_dpi *dpi, bool enable)
337{
338 mtk_dpi_mask(dpi, DPI_CON, enable ? IN_RB_SWAP : 0, IN_RB_SWAP);
339}
340
341static void mtk_dpi_config_2n_h_fre(struct mtk_dpi *dpi)
342{
343 mtk_dpi_mask(dpi, DPI_H_FRE_CON, H_FRE_2N, H_FRE_2N);
344}
345
346static void mtk_dpi_config_color_format(struct mtk_dpi *dpi,
347 enum mtk_dpi_out_color_format format)
348{
349 if ((format == MTK_DPI_COLOR_FORMAT_YCBCR_444) ||
350 (format == MTK_DPI_COLOR_FORMAT_YCBCR_444_FULL)) {
351 mtk_dpi_config_yuv422_enable(dpi, false);
352 mtk_dpi_config_csc_enable(dpi, true);
353 mtk_dpi_config_swap_input(dpi, false);
354 mtk_dpi_config_channel_swap(dpi, MTK_DPI_OUT_CHANNEL_SWAP_BGR);
355 } else if ((format == MTK_DPI_COLOR_FORMAT_YCBCR_422) ||
356 (format == MTK_DPI_COLOR_FORMAT_YCBCR_422_FULL)) {
357 mtk_dpi_config_yuv422_enable(dpi, true);
358 mtk_dpi_config_csc_enable(dpi, true);
359 mtk_dpi_config_swap_input(dpi, true);
360 mtk_dpi_config_channel_swap(dpi, MTK_DPI_OUT_CHANNEL_SWAP_RGB);
361 } else {
362 mtk_dpi_config_yuv422_enable(dpi, false);
363 mtk_dpi_config_csc_enable(dpi, false);
364 mtk_dpi_config_swap_input(dpi, false);
365 mtk_dpi_config_channel_swap(dpi, MTK_DPI_OUT_CHANNEL_SWAP_RGB);
366 }
367}
368
369static void mtk_dpi_power_off(struct mtk_dpi *dpi, enum mtk_dpi_power_ctl pctl)
370{
371 dpi->power_ctl &= ~pctl;
372
373 if ((dpi->power_ctl & DPI_POWER_START) ||
374 (dpi->power_ctl & DPI_POWER_ENABLE))
375 return;
376
377 if (!dpi->power_sta)
378 return;
379
380 mtk_dpi_disable(dpi);
381 clk_disable_unprepare(dpi->pixel_clk);
382 clk_disable_unprepare(dpi->engine_clk);
383 dpi->power_sta = false;
384}
385
386static int mtk_dpi_power_on(struct mtk_dpi *dpi, enum mtk_dpi_power_ctl pctl)
387{
388 int ret;
389
390 dpi->power_ctl |= pctl;
391
392 if (!(dpi->power_ctl & DPI_POWER_START) &&
393 !(dpi->power_ctl & DPI_POWER_ENABLE))
394 return 0;
395
396 if (dpi->power_sta)
397 return 0;
398
399 ret = clk_prepare_enable(dpi->engine_clk);
400 if (ret) {
401 dev_err(dpi->dev, "Failed to enable engine clock: %d\n", ret);
402 goto err_eng;
403 }
404
405 ret = clk_prepare_enable(dpi->pixel_clk);
406 if (ret) {
407 dev_err(dpi->dev, "Failed to enable pixel clock: %d\n", ret);
408 goto err_pixel;
409 }
410
411 mtk_dpi_enable(dpi);
412 dpi->power_sta = true;
413 return 0;
414
415err_pixel:
416 clk_disable_unprepare(dpi->engine_clk);
417err_eng:
418 dpi->power_ctl &= ~pctl;
419 return ret;
420}
421
422static int mtk_dpi_set_display_mode(struct mtk_dpi *dpi,
423 struct drm_display_mode *mode)
424{
425 struct mtk_dpi_yc_limit limit;
426 struct mtk_dpi_polarities dpi_pol;
427 struct mtk_dpi_sync_param hsync;
428 struct mtk_dpi_sync_param vsync_lodd = { 0 };
429 struct mtk_dpi_sync_param vsync_leven = { 0 };
430 struct mtk_dpi_sync_param vsync_rodd = { 0 };
431 struct mtk_dpi_sync_param vsync_reven = { 0 };
432 unsigned long pix_rate;
433 unsigned long pll_rate;
434 unsigned int factor;
435
436 /* let pll_rate can fix the valid range of tvdpll (1G~2GHz) */
437 pix_rate = 1000UL * mode->clock;
438 if (mode->clock <= 27000)
439 factor = 16 * 3;
440 else if (mode->clock <= 84000)
441 factor = 8 * 3;
442 else if (mode->clock <= 167000)
443 factor = 4 * 3;
444 else
445 factor = 2 * 3;
446 pll_rate = pix_rate * factor;
447
448 dev_dbg(dpi->dev, "Want PLL %lu Hz, pixel clock %lu Hz\n",
449 pll_rate, pix_rate);
450
451 clk_set_rate(dpi->tvd_clk, pll_rate);
452 pll_rate = clk_get_rate(dpi->tvd_clk);
453
454 pix_rate = pll_rate / factor;
455 clk_set_rate(dpi->pixel_clk, pix_rate);
456 pix_rate = clk_get_rate(dpi->pixel_clk);
457
458 dev_dbg(dpi->dev, "Got PLL %lu Hz, pixel clock %lu Hz\n",
459 pll_rate, pix_rate);
460
461 limit.c_bottom = 0x0010;
462 limit.c_top = 0x0FE0;
463 limit.y_bottom = 0x0010;
464 limit.y_top = 0x0FE0;
465
466 dpi_pol.ck_pol = MTK_DPI_POLARITY_FALLING;
467 dpi_pol.de_pol = MTK_DPI_POLARITY_RISING;
468 dpi_pol.hsync_pol = mode->flags & DRM_MODE_FLAG_PHSYNC ?
469 MTK_DPI_POLARITY_FALLING : MTK_DPI_POLARITY_RISING;
470 dpi_pol.vsync_pol = mode->flags & DRM_MODE_FLAG_PVSYNC ?
471 MTK_DPI_POLARITY_FALLING : MTK_DPI_POLARITY_RISING;
472
473 hsync.sync_width = mode->hsync_end - mode->hsync_start;
474 hsync.back_porch = mode->htotal - mode->hsync_end;
475 hsync.front_porch = mode->hsync_start - mode->hdisplay;
476 hsync.shift_half_line = false;
477
478 vsync_lodd.sync_width = mode->vsync_end - mode->vsync_start;
479 vsync_lodd.back_porch = mode->vtotal - mode->vsync_end;
480 vsync_lodd.front_porch = mode->vsync_start - mode->vdisplay;
481 vsync_lodd.shift_half_line = false;
482
483 if (mode->flags & DRM_MODE_FLAG_INTERLACE &&
484 mode->flags & DRM_MODE_FLAG_3D_MASK) {
485 vsync_leven = vsync_lodd;
486 vsync_rodd = vsync_lodd;
487 vsync_reven = vsync_lodd;
488 vsync_leven.shift_half_line = true;
489 vsync_reven.shift_half_line = true;
490 } else if (mode->flags & DRM_MODE_FLAG_INTERLACE &&
491 !(mode->flags & DRM_MODE_FLAG_3D_MASK)) {
492 vsync_leven = vsync_lodd;
493 vsync_leven.shift_half_line = true;
494 } else if (!(mode->flags & DRM_MODE_FLAG_INTERLACE) &&
495 mode->flags & DRM_MODE_FLAG_3D_MASK) {
496 vsync_rodd = vsync_lodd;
497 }
498 mtk_dpi_sw_reset(dpi, true);
499 mtk_dpi_config_pol(dpi, &dpi_pol);
500
501 mtk_dpi_config_hsync(dpi, &hsync);
502 mtk_dpi_config_vsync_lodd(dpi, &vsync_lodd);
503 mtk_dpi_config_vsync_rodd(dpi, &vsync_rodd);
504 mtk_dpi_config_vsync_leven(dpi, &vsync_leven);
505 mtk_dpi_config_vsync_reven(dpi, &vsync_reven);
506
507 mtk_dpi_config_3d(dpi, !!(mode->flags & DRM_MODE_FLAG_3D_MASK));
508 mtk_dpi_config_interface(dpi, !!(mode->flags &
509 DRM_MODE_FLAG_INTERLACE));
510 if (mode->flags & DRM_MODE_FLAG_INTERLACE)
511 mtk_dpi_config_fb_size(dpi, mode->hdisplay, mode->vdisplay / 2);
512 else
513 mtk_dpi_config_fb_size(dpi, mode->hdisplay, mode->vdisplay);
514
515 mtk_dpi_config_channel_limit(dpi, &limit);
516 mtk_dpi_config_bit_num(dpi, dpi->bit_num);
517 mtk_dpi_config_channel_swap(dpi, dpi->channel_swap);
518 mtk_dpi_config_yc_map(dpi, dpi->yc_map);
519 mtk_dpi_config_color_format(dpi, dpi->color_format);
520 mtk_dpi_config_2n_h_fre(dpi);
521 mtk_dpi_sw_reset(dpi, false);
522
523 return 0;
524}
525
526static void mtk_dpi_encoder_destroy(struct drm_encoder *encoder)
527{
528 drm_encoder_cleanup(encoder);
529}
530
531static const struct drm_encoder_funcs mtk_dpi_encoder_funcs = {
532 .destroy = mtk_dpi_encoder_destroy,
533};
534
535static bool mtk_dpi_encoder_mode_fixup(struct drm_encoder *encoder,
536 const struct drm_display_mode *mode,
537 struct drm_display_mode *adjusted_mode)
538{
539 return true;
540}
541
542static void mtk_dpi_encoder_mode_set(struct drm_encoder *encoder,
543 struct drm_display_mode *mode,
544 struct drm_display_mode *adjusted_mode)
545{
546 struct mtk_dpi *dpi = mtk_dpi_from_encoder(encoder);
547
548 drm_mode_copy(&dpi->mode, adjusted_mode);
549}
550
551static void mtk_dpi_encoder_disable(struct drm_encoder *encoder)
552{
553 struct mtk_dpi *dpi = mtk_dpi_from_encoder(encoder);
554
555 mtk_dpi_power_off(dpi, DPI_POWER_ENABLE);
556}
557
558static void mtk_dpi_encoder_enable(struct drm_encoder *encoder)
559{
560 struct mtk_dpi *dpi = mtk_dpi_from_encoder(encoder);
561
562 mtk_dpi_power_on(dpi, DPI_POWER_ENABLE);
563 mtk_dpi_set_display_mode(dpi, &dpi->mode);
564}
565
566static int mtk_dpi_atomic_check(struct drm_encoder *encoder,
567 struct drm_crtc_state *crtc_state,
568 struct drm_connector_state *conn_state)
569{
570 return 0;
571}
572
573static const struct drm_encoder_helper_funcs mtk_dpi_encoder_helper_funcs = {
574 .mode_fixup = mtk_dpi_encoder_mode_fixup,
575 .mode_set = mtk_dpi_encoder_mode_set,
576 .disable = mtk_dpi_encoder_disable,
577 .enable = mtk_dpi_encoder_enable,
578 .atomic_check = mtk_dpi_atomic_check,
579};
580
581static void mtk_dpi_start(struct mtk_ddp_comp *comp)
582{
583 struct mtk_dpi *dpi = container_of(comp, struct mtk_dpi, ddp_comp);
584
585 mtk_dpi_power_on(dpi, DPI_POWER_START);
586}
587
588static void mtk_dpi_stop(struct mtk_ddp_comp *comp)
589{
590 struct mtk_dpi *dpi = container_of(comp, struct mtk_dpi, ddp_comp);
591
592 mtk_dpi_power_off(dpi, DPI_POWER_START);
593}
594
595static const struct mtk_ddp_comp_funcs mtk_dpi_funcs = {
596 .start = mtk_dpi_start,
597 .stop = mtk_dpi_stop,
598};
599
600static int mtk_dpi_bind(struct device *dev, struct device *master, void *data)
601{
602 struct mtk_dpi *dpi = dev_get_drvdata(dev);
603 struct drm_device *drm_dev = data;
604 int ret;
605
606 ret = mtk_ddp_comp_register(drm_dev, &dpi->ddp_comp);
607 if (ret < 0) {
608 dev_err(dev, "Failed to register component %pOF: %d\n",
609 dev->of_node, ret);
610 return ret;
611 }
612
613 ret = drm_encoder_init(drm_dev, &dpi->encoder, &mtk_dpi_encoder_funcs,
614 DRM_MODE_ENCODER_TMDS, NULL);
615 if (ret) {
616 dev_err(dev, "Failed to initialize decoder: %d\n", ret);
617 goto err_unregister;
618 }
619 drm_encoder_helper_add(&dpi->encoder, &mtk_dpi_encoder_helper_funcs);
620
621 /* Currently DPI0 is fixed to be driven by OVL1 */
622 dpi->encoder.possible_crtcs = BIT(1);
623
624 ret = drm_bridge_attach(&dpi->encoder, dpi->bridge, NULL);
625 if (ret) {
626 dev_err(dev, "Failed to attach bridge: %d\n", ret);
627 goto err_cleanup;
628 }
629
630 dpi->bit_num = MTK_DPI_OUT_BIT_NUM_8BITS;
631 dpi->channel_swap = MTK_DPI_OUT_CHANNEL_SWAP_RGB;
632 dpi->yc_map = MTK_DPI_OUT_YC_MAP_RGB;
633 dpi->color_format = MTK_DPI_COLOR_FORMAT_RGB;
634
635 return 0;
636
637err_cleanup:
638 drm_encoder_cleanup(&dpi->encoder);
639err_unregister:
640 mtk_ddp_comp_unregister(drm_dev, &dpi->ddp_comp);
641 return ret;
642}
643
644static void mtk_dpi_unbind(struct device *dev, struct device *master,
645 void *data)
646{
647 struct mtk_dpi *dpi = dev_get_drvdata(dev);
648 struct drm_device *drm_dev = data;
649
650 drm_encoder_cleanup(&dpi->encoder);
651 mtk_ddp_comp_unregister(drm_dev, &dpi->ddp_comp);
652}
653
654static const struct component_ops mtk_dpi_component_ops = {
655 .bind = mtk_dpi_bind,
656 .unbind = mtk_dpi_unbind,
657};
658
659static int mtk_dpi_probe(struct platform_device *pdev)
660{
661 struct device *dev = &pdev->dev;
662 struct mtk_dpi *dpi;
663 struct resource *mem;
664 struct device_node *bridge_node;
665 int comp_id;
666 int ret;
667
668 dpi = devm_kzalloc(dev, sizeof(*dpi), GFP_KERNEL);
669 if (!dpi)
670 return -ENOMEM;
671
672 dpi->dev = dev;
673
674 mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
675 dpi->regs = devm_ioremap_resource(dev, mem);
676 if (IS_ERR(dpi->regs)) {
677 ret = PTR_ERR(dpi->regs);
678 dev_err(dev, "Failed to ioremap mem resource: %d\n", ret);
679 return ret;
680 }
681
682 dpi->engine_clk = devm_clk_get(dev, "engine");
683 if (IS_ERR(dpi->engine_clk)) {
684 ret = PTR_ERR(dpi->engine_clk);
685 dev_err(dev, "Failed to get engine clock: %d\n", ret);
686 return ret;
687 }
688
689 dpi->pixel_clk = devm_clk_get(dev, "pixel");
690 if (IS_ERR(dpi->pixel_clk)) {
691 ret = PTR_ERR(dpi->pixel_clk);
692 dev_err(dev, "Failed to get pixel clock: %d\n", ret);
693 return ret;
694 }
695
696 dpi->tvd_clk = devm_clk_get(dev, "pll");
697 if (IS_ERR(dpi->tvd_clk)) {
698 ret = PTR_ERR(dpi->tvd_clk);
699 dev_err(dev, "Failed to get tvdpll clock: %d\n", ret);
700 return ret;
701 }
702
703 dpi->irq = platform_get_irq(pdev, 0);
704 if (dpi->irq <= 0) {
705 dev_err(dev, "Failed to get irq: %d\n", dpi->irq);
706 return -EINVAL;
707 }
708
709 bridge_node = of_graph_get_remote_node(dev->of_node, 0, 0);
710 if (!bridge_node)
711 return -ENODEV;
712
713 dev_info(dev, "Found bridge node: %pOF\n", bridge_node);
714
715 dpi->bridge = of_drm_find_bridge(bridge_node);
716 of_node_put(bridge_node);
717 if (!dpi->bridge)
718 return -EPROBE_DEFER;
719
720 comp_id = mtk_ddp_comp_get_id(dev->of_node, MTK_DPI);
721 if (comp_id < 0) {
722 dev_err(dev, "Failed to identify by alias: %d\n", comp_id);
723 return comp_id;
724 }
725
726 ret = mtk_ddp_comp_init(dev, dev->of_node, &dpi->ddp_comp, comp_id,
727 &mtk_dpi_funcs);
728 if (ret) {
729 dev_err(dev, "Failed to initialize component: %d\n", ret);
730 return ret;
731 }
732
733 platform_set_drvdata(pdev, dpi);
734
735 ret = component_add(dev, &mtk_dpi_component_ops);
736 if (ret) {
737 dev_err(dev, "Failed to add component: %d\n", ret);
738 return ret;
739 }
740
741 return 0;
742}
743
744static int mtk_dpi_remove(struct platform_device *pdev)
745{
746 component_del(&pdev->dev, &mtk_dpi_component_ops);
747
748 return 0;
749}
750
751static const struct of_device_id mtk_dpi_of_ids[] = {
752 { .compatible = "mediatek,mt8173-dpi", },
753 {}
754};
755
756struct platform_driver mtk_dpi_driver = {
757 .probe = mtk_dpi_probe,
758 .remove = mtk_dpi_remove,
759 .driver = {
760 .name = "mediatek-dpi",
761 .of_match_table = mtk_dpi_of_ids,
762 },
763};
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};