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
34 enum 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
41 enum 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
49 enum 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
58 enum mtk_dpi_out_color_format {
59 MTK_DPI_COLOR_FORMAT_RGB,
60 MTK_DPI_COLOR_FORMAT_YCBCR_422
61 };
62
63 struct 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
bridge_to_dpi(struct drm_bridge * b)88 static inline struct mtk_dpi *bridge_to_dpi(struct drm_bridge *b)
89 {
90 return container_of(b, struct mtk_dpi, bridge);
91 }
92
93 enum mtk_dpi_polarity {
94 MTK_DPI_POLARITY_RISING,
95 MTK_DPI_POLARITY_FALLING,
96 };
97
98 struct 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
105 struct mtk_dpi_sync_param {
106 u32 sync_width;
107 u32 front_porch;
108 u32 back_porch;
109 bool shift_half_line;
110 };
111
112 struct 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 * @dimension_mask: Mask used for HWIDTH, HPORCH, VSYNC_WIDTH and VSYNC_PORCH
131 * (no shift).
132 * @hvsize_mask: Mask of HSIZE and VSIZE mask (no shift).
133 * @channel_swap_shift: Shift value of channel swap.
134 * @yuv422_en_bit: Enable bit of yuv422.
135 * @csc_enable_bit: Enable bit of CSC.
136 * @input_2p_en_bit: Enable bit for input two pixel per round feature.
137 * If present, implies that the feature must be enabled.
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 */
141 struct 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 u32 dimension_mask;
152 u32 hvsize_mask;
153 u32 channel_swap_shift;
154 u32 yuv422_en_bit;
155 u32 csc_enable_bit;
156 u32 input_2p_en_bit;
157 u32 pixels_per_iter;
158 bool edge_cfg_in_mmsys;
159 };
160
mtk_dpi_mask(struct mtk_dpi * dpi,u32 offset,u32 val,u32 mask)161 static 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
mtk_dpi_sw_reset(struct mtk_dpi * dpi,bool reset)169 static 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
mtk_dpi_enable(struct mtk_dpi * dpi)174 static void mtk_dpi_enable(struct mtk_dpi *dpi)
175 {
176 mtk_dpi_mask(dpi, DPI_EN, EN, EN);
177 }
178
mtk_dpi_disable(struct mtk_dpi * dpi)179 static void mtk_dpi_disable(struct mtk_dpi *dpi)
180 {
181 mtk_dpi_mask(dpi, DPI_EN, 0, EN);
182 }
183
mtk_dpi_config_hsync(struct mtk_dpi * dpi,struct mtk_dpi_sync_param * sync)184 static 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
mtk_dpi_config_vsync(struct mtk_dpi * dpi,struct mtk_dpi_sync_param * sync,u32 width_addr,u32 porch_addr)195 static 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
mtk_dpi_config_vsync_lodd(struct mtk_dpi * dpi,struct mtk_dpi_sync_param * sync)213 static 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
mtk_dpi_config_vsync_leven(struct mtk_dpi * dpi,struct mtk_dpi_sync_param * sync)219 static 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
mtk_dpi_config_vsync_rodd(struct mtk_dpi * dpi,struct mtk_dpi_sync_param * sync)226 static 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
mtk_dpi_config_vsync_reven(struct mtk_dpi * dpi,struct mtk_dpi_sync_param * sync)233 static 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
mtk_dpi_config_pol(struct mtk_dpi * dpi,struct mtk_dpi_polarities * dpi_pol)240 static 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
mtk_dpi_config_3d(struct mtk_dpi * dpi,bool en_3d)260 static 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
mtk_dpi_config_interface(struct mtk_dpi * dpi,bool inter)265 static 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
mtk_dpi_config_fb_size(struct mtk_dpi * dpi,u32 width,u32 height)270 static 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
mtk_dpi_config_channel_limit(struct mtk_dpi * dpi)278 static 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
mtk_dpi_config_bit_num(struct mtk_dpi * dpi,enum mtk_dpi_out_bit_num num)305 static 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
mtk_dpi_config_yc_map(struct mtk_dpi * dpi,enum mtk_dpi_out_yc_map map)331 static 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
mtk_dpi_config_channel_swap(struct mtk_dpi * dpi,enum mtk_dpi_out_channel_swap swap)360 static 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
mtk_dpi_config_yuv422_enable(struct mtk_dpi * dpi,bool enable)394 static 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
mtk_dpi_config_csc_enable(struct mtk_dpi * dpi,bool enable)400 static 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
mtk_dpi_config_swap_input(struct mtk_dpi * dpi,bool enable)406 static 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
mtk_dpi_config_2n_h_fre(struct mtk_dpi * dpi)411 static void mtk_dpi_config_2n_h_fre(struct mtk_dpi *dpi)
412 {
413 if (dpi->conf->reg_h_fre_con)
414 mtk_dpi_mask(dpi, dpi->conf->reg_h_fre_con, H_FRE_2N, H_FRE_2N);
415 }
416
mtk_dpi_config_disable_edge(struct mtk_dpi * dpi)417 static void mtk_dpi_config_disable_edge(struct mtk_dpi *dpi)
418 {
419 if (dpi->conf->edge_sel_en && dpi->conf->reg_h_fre_con)
420 mtk_dpi_mask(dpi, dpi->conf->reg_h_fre_con, 0, EDGE_SEL_EN);
421 }
422
mtk_dpi_config_color_format(struct mtk_dpi * dpi,enum mtk_dpi_out_color_format format)423 static void mtk_dpi_config_color_format(struct mtk_dpi *dpi,
424 enum mtk_dpi_out_color_format format)
425 {
426 mtk_dpi_config_channel_swap(dpi, MTK_DPI_OUT_CHANNEL_SWAP_RGB);
427
428 if (format == MTK_DPI_COLOR_FORMAT_YCBCR_422) {
429 mtk_dpi_config_yuv422_enable(dpi, true);
430 mtk_dpi_config_csc_enable(dpi, true);
431
432 /*
433 * If height is smaller than 720, we need to use RGB_TO_BT601
434 * to transfer to yuv422. Otherwise, we use RGB_TO_JPEG.
435 */
436 mtk_dpi_mask(dpi, DPI_MATRIX_SET, dpi->mode.hdisplay <= 720 ?
437 MATRIX_SEL_RGB_TO_BT601 : MATRIX_SEL_RGB_TO_JPEG,
438 INT_MATRIX_SEL_MASK);
439 } else {
440 mtk_dpi_config_yuv422_enable(dpi, false);
441 mtk_dpi_config_csc_enable(dpi, false);
442 if (dpi->conf->swap_input_support)
443 mtk_dpi_config_swap_input(dpi, false);
444 }
445 }
446
mtk_dpi_dual_edge(struct mtk_dpi * dpi)447 static void mtk_dpi_dual_edge(struct mtk_dpi *dpi)
448 {
449 if ((dpi->output_fmt == MEDIA_BUS_FMT_RGB888_2X12_LE) ||
450 (dpi->output_fmt == MEDIA_BUS_FMT_RGB888_2X12_BE)) {
451 mtk_dpi_mask(dpi, DPI_DDR_SETTING, DDR_EN | DDR_4PHASE,
452 DDR_EN | DDR_4PHASE);
453 mtk_dpi_mask(dpi, DPI_OUTPUT_SETTING,
454 dpi->output_fmt == MEDIA_BUS_FMT_RGB888_2X12_LE ?
455 EDGE_SEL : 0, EDGE_SEL);
456 if (dpi->conf->edge_cfg_in_mmsys)
457 mtk_mmsys_ddp_dpi_fmt_config(dpi->mmsys_dev, MTK_DPI_RGB888_DDR_CON);
458 } else {
459 mtk_dpi_mask(dpi, DPI_DDR_SETTING, DDR_EN | DDR_4PHASE, 0);
460 if (dpi->conf->edge_cfg_in_mmsys)
461 mtk_mmsys_ddp_dpi_fmt_config(dpi->mmsys_dev, MTK_DPI_RGB888_SDR_CON);
462 }
463 }
464
mtk_dpi_power_off(struct mtk_dpi * dpi)465 static void mtk_dpi_power_off(struct mtk_dpi *dpi)
466 {
467 if (WARN_ON(dpi->refcount == 0))
468 return;
469
470 if (--dpi->refcount != 0)
471 return;
472
473 mtk_dpi_disable(dpi);
474 clk_disable_unprepare(dpi->pixel_clk);
475 clk_disable_unprepare(dpi->tvd_clk);
476 clk_disable_unprepare(dpi->engine_clk);
477 }
478
mtk_dpi_power_on(struct mtk_dpi * dpi)479 static int mtk_dpi_power_on(struct mtk_dpi *dpi)
480 {
481 int ret;
482
483 if (++dpi->refcount != 1)
484 return 0;
485
486 ret = clk_prepare_enable(dpi->engine_clk);
487 if (ret) {
488 dev_err(dpi->dev, "Failed to enable engine clock: %d\n", ret);
489 goto err_refcount;
490 }
491
492 ret = clk_prepare_enable(dpi->tvd_clk);
493 if (ret) {
494 dev_err(dpi->dev, "Failed to enable tvd pll: %d\n", ret);
495 goto err_engine;
496 }
497
498 ret = clk_prepare_enable(dpi->pixel_clk);
499 if (ret) {
500 dev_err(dpi->dev, "Failed to enable pixel clock: %d\n", ret);
501 goto err_pixel;
502 }
503
504 return 0;
505
506 err_pixel:
507 clk_disable_unprepare(dpi->tvd_clk);
508 err_engine:
509 clk_disable_unprepare(dpi->engine_clk);
510 err_refcount:
511 dpi->refcount--;
512 return ret;
513 }
514
mtk_dpi_set_display_mode(struct mtk_dpi * dpi,struct drm_display_mode * mode)515 static int mtk_dpi_set_display_mode(struct mtk_dpi *dpi,
516 struct drm_display_mode *mode)
517 {
518 struct mtk_dpi_polarities dpi_pol;
519 struct mtk_dpi_sync_param hsync;
520 struct mtk_dpi_sync_param vsync_lodd = { 0 };
521 struct mtk_dpi_sync_param vsync_leven = { 0 };
522 struct mtk_dpi_sync_param vsync_rodd = { 0 };
523 struct mtk_dpi_sync_param vsync_reven = { 0 };
524 struct videomode vm = { 0 };
525 unsigned long pll_rate;
526 unsigned int factor;
527
528 /* let pll_rate can fix the valid range of tvdpll (1G~2GHz) */
529 factor = dpi->conf->cal_factor(mode->clock);
530 drm_display_mode_to_videomode(mode, &vm);
531 pll_rate = vm.pixelclock * factor;
532
533 dev_dbg(dpi->dev, "Want PLL %lu Hz, pixel clock %lu Hz\n",
534 pll_rate, vm.pixelclock);
535
536 clk_set_rate(dpi->tvd_clk, pll_rate);
537 pll_rate = clk_get_rate(dpi->tvd_clk);
538
539 /*
540 * Depending on the IP version, we may output a different amount of
541 * pixels for each iteration: divide the clock by this number and
542 * adjust the display porches accordingly.
543 */
544 vm.pixelclock = pll_rate / factor;
545 vm.pixelclock /= dpi->conf->pixels_per_iter;
546
547 if ((dpi->output_fmt == MEDIA_BUS_FMT_RGB888_2X12_LE) ||
548 (dpi->output_fmt == MEDIA_BUS_FMT_RGB888_2X12_BE))
549 clk_set_rate(dpi->pixel_clk, vm.pixelclock * 2);
550 else
551 clk_set_rate(dpi->pixel_clk, vm.pixelclock);
552
553
554 vm.pixelclock = clk_get_rate(dpi->pixel_clk);
555
556 dev_dbg(dpi->dev, "Got PLL %lu Hz, pixel clock %lu Hz\n",
557 pll_rate, vm.pixelclock);
558
559 dpi_pol.ck_pol = MTK_DPI_POLARITY_FALLING;
560 dpi_pol.de_pol = MTK_DPI_POLARITY_RISING;
561 dpi_pol.hsync_pol = vm.flags & DISPLAY_FLAGS_HSYNC_HIGH ?
562 MTK_DPI_POLARITY_FALLING : MTK_DPI_POLARITY_RISING;
563 dpi_pol.vsync_pol = vm.flags & DISPLAY_FLAGS_VSYNC_HIGH ?
564 MTK_DPI_POLARITY_FALLING : MTK_DPI_POLARITY_RISING;
565
566 /*
567 * Depending on the IP version, we may output a different amount of
568 * pixels for each iteration: divide the clock by this number and
569 * adjust the display porches accordingly.
570 */
571 hsync.sync_width = vm.hsync_len / dpi->conf->pixels_per_iter;
572 hsync.back_porch = vm.hback_porch / dpi->conf->pixels_per_iter;
573 hsync.front_porch = vm.hfront_porch / dpi->conf->pixels_per_iter;
574
575 hsync.shift_half_line = false;
576 vsync_lodd.sync_width = vm.vsync_len;
577 vsync_lodd.back_porch = vm.vback_porch;
578 vsync_lodd.front_porch = vm.vfront_porch;
579 vsync_lodd.shift_half_line = false;
580
581 if (vm.flags & DISPLAY_FLAGS_INTERLACED &&
582 mode->flags & DRM_MODE_FLAG_3D_MASK) {
583 vsync_leven = vsync_lodd;
584 vsync_rodd = vsync_lodd;
585 vsync_reven = vsync_lodd;
586 vsync_leven.shift_half_line = true;
587 vsync_reven.shift_half_line = true;
588 } else if (vm.flags & DISPLAY_FLAGS_INTERLACED &&
589 !(mode->flags & DRM_MODE_FLAG_3D_MASK)) {
590 vsync_leven = vsync_lodd;
591 vsync_leven.shift_half_line = true;
592 } else if (!(vm.flags & DISPLAY_FLAGS_INTERLACED) &&
593 mode->flags & DRM_MODE_FLAG_3D_MASK) {
594 vsync_rodd = vsync_lodd;
595 }
596 mtk_dpi_sw_reset(dpi, true);
597 mtk_dpi_config_pol(dpi, &dpi_pol);
598
599 mtk_dpi_config_hsync(dpi, &hsync);
600 mtk_dpi_config_vsync_lodd(dpi, &vsync_lodd);
601 mtk_dpi_config_vsync_rodd(dpi, &vsync_rodd);
602 mtk_dpi_config_vsync_leven(dpi, &vsync_leven);
603 mtk_dpi_config_vsync_reven(dpi, &vsync_reven);
604
605 mtk_dpi_config_3d(dpi, !!(mode->flags & DRM_MODE_FLAG_3D_MASK));
606 mtk_dpi_config_interface(dpi, !!(vm.flags &
607 DISPLAY_FLAGS_INTERLACED));
608 if (vm.flags & DISPLAY_FLAGS_INTERLACED)
609 mtk_dpi_config_fb_size(dpi, vm.hactive, vm.vactive >> 1);
610 else
611 mtk_dpi_config_fb_size(dpi, vm.hactive, vm.vactive);
612
613 mtk_dpi_config_channel_limit(dpi);
614 mtk_dpi_config_bit_num(dpi, dpi->bit_num);
615 mtk_dpi_config_channel_swap(dpi, dpi->channel_swap);
616 mtk_dpi_config_color_format(dpi, dpi->color_format);
617 if (dpi->conf->support_direct_pin) {
618 mtk_dpi_config_yc_map(dpi, dpi->yc_map);
619 mtk_dpi_config_2n_h_fre(dpi);
620 mtk_dpi_dual_edge(dpi);
621 mtk_dpi_config_disable_edge(dpi);
622 }
623 if (dpi->conf->input_2p_en_bit) {
624 mtk_dpi_mask(dpi, DPI_CON, dpi->conf->input_2p_en_bit,
625 dpi->conf->input_2p_en_bit);
626 }
627 mtk_dpi_sw_reset(dpi, false);
628
629 return 0;
630 }
631
mtk_dpi_bridge_atomic_get_output_bus_fmts(struct drm_bridge * bridge,struct drm_bridge_state * bridge_state,struct drm_crtc_state * crtc_state,struct drm_connector_state * conn_state,unsigned int * num_output_fmts)632 static u32 *mtk_dpi_bridge_atomic_get_output_bus_fmts(struct drm_bridge *bridge,
633 struct drm_bridge_state *bridge_state,
634 struct drm_crtc_state *crtc_state,
635 struct drm_connector_state *conn_state,
636 unsigned int *num_output_fmts)
637 {
638 struct mtk_dpi *dpi = bridge_to_dpi(bridge);
639 u32 *output_fmts;
640
641 *num_output_fmts = 0;
642
643 if (!dpi->conf->output_fmts) {
644 dev_err(dpi->dev, "output_fmts should not be null\n");
645 return NULL;
646 }
647
648 output_fmts = kcalloc(dpi->conf->num_output_fmts, sizeof(*output_fmts),
649 GFP_KERNEL);
650 if (!output_fmts)
651 return NULL;
652
653 *num_output_fmts = dpi->conf->num_output_fmts;
654
655 memcpy(output_fmts, dpi->conf->output_fmts,
656 sizeof(*output_fmts) * dpi->conf->num_output_fmts);
657
658 return output_fmts;
659 }
660
mtk_dpi_bridge_atomic_get_input_bus_fmts(struct drm_bridge * bridge,struct drm_bridge_state * bridge_state,struct drm_crtc_state * crtc_state,struct drm_connector_state * conn_state,u32 output_fmt,unsigned int * num_input_fmts)661 static u32 *mtk_dpi_bridge_atomic_get_input_bus_fmts(struct drm_bridge *bridge,
662 struct drm_bridge_state *bridge_state,
663 struct drm_crtc_state *crtc_state,
664 struct drm_connector_state *conn_state,
665 u32 output_fmt,
666 unsigned int *num_input_fmts)
667 {
668 u32 *input_fmts;
669
670 *num_input_fmts = 0;
671
672 input_fmts = kcalloc(1, sizeof(*input_fmts),
673 GFP_KERNEL);
674 if (!input_fmts)
675 return NULL;
676
677 *num_input_fmts = 1;
678 input_fmts[0] = MEDIA_BUS_FMT_RGB888_1X24;
679
680 return input_fmts;
681 }
682
mtk_dpi_bridge_atomic_check(struct drm_bridge * bridge,struct drm_bridge_state * bridge_state,struct drm_crtc_state * crtc_state,struct drm_connector_state * conn_state)683 static int mtk_dpi_bridge_atomic_check(struct drm_bridge *bridge,
684 struct drm_bridge_state *bridge_state,
685 struct drm_crtc_state *crtc_state,
686 struct drm_connector_state *conn_state)
687 {
688 struct mtk_dpi *dpi = bridge_to_dpi(bridge);
689 unsigned int out_bus_format;
690
691 out_bus_format = bridge_state->output_bus_cfg.format;
692
693 if (out_bus_format == MEDIA_BUS_FMT_FIXED)
694 if (dpi->conf->num_output_fmts)
695 out_bus_format = dpi->conf->output_fmts[0];
696
697 dev_dbg(dpi->dev, "input format 0x%04x, output format 0x%04x\n",
698 bridge_state->input_bus_cfg.format,
699 bridge_state->output_bus_cfg.format);
700
701 dpi->output_fmt = out_bus_format;
702 dpi->bit_num = MTK_DPI_OUT_BIT_NUM_8BITS;
703 dpi->channel_swap = MTK_DPI_OUT_CHANNEL_SWAP_RGB;
704 dpi->yc_map = MTK_DPI_OUT_YC_MAP_RGB;
705 if (out_bus_format == MEDIA_BUS_FMT_YUYV8_1X16)
706 dpi->color_format = MTK_DPI_COLOR_FORMAT_YCBCR_422;
707 else
708 dpi->color_format = MTK_DPI_COLOR_FORMAT_RGB;
709
710 return 0;
711 }
712
mtk_dpi_bridge_attach(struct drm_bridge * bridge,enum drm_bridge_attach_flags flags)713 static int mtk_dpi_bridge_attach(struct drm_bridge *bridge,
714 enum drm_bridge_attach_flags flags)
715 {
716 struct mtk_dpi *dpi = bridge_to_dpi(bridge);
717
718 return drm_bridge_attach(bridge->encoder, dpi->next_bridge,
719 &dpi->bridge, flags);
720 }
721
mtk_dpi_bridge_mode_set(struct drm_bridge * bridge,const struct drm_display_mode * mode,const struct drm_display_mode * adjusted_mode)722 static void mtk_dpi_bridge_mode_set(struct drm_bridge *bridge,
723 const struct drm_display_mode *mode,
724 const struct drm_display_mode *adjusted_mode)
725 {
726 struct mtk_dpi *dpi = bridge_to_dpi(bridge);
727
728 drm_mode_copy(&dpi->mode, adjusted_mode);
729 }
730
mtk_dpi_bridge_disable(struct drm_bridge * bridge)731 static void mtk_dpi_bridge_disable(struct drm_bridge *bridge)
732 {
733 struct mtk_dpi *dpi = bridge_to_dpi(bridge);
734
735 mtk_dpi_power_off(dpi);
736
737 if (dpi->pinctrl && dpi->pins_gpio)
738 pinctrl_select_state(dpi->pinctrl, dpi->pins_gpio);
739 }
740
mtk_dpi_bridge_enable(struct drm_bridge * bridge)741 static void mtk_dpi_bridge_enable(struct drm_bridge *bridge)
742 {
743 struct mtk_dpi *dpi = bridge_to_dpi(bridge);
744
745 if (dpi->pinctrl && dpi->pins_dpi)
746 pinctrl_select_state(dpi->pinctrl, dpi->pins_dpi);
747
748 mtk_dpi_power_on(dpi);
749 mtk_dpi_set_display_mode(dpi, &dpi->mode);
750 mtk_dpi_enable(dpi);
751 }
752
753 static enum drm_mode_status
mtk_dpi_bridge_mode_valid(struct drm_bridge * bridge,const struct drm_display_info * info,const struct drm_display_mode * mode)754 mtk_dpi_bridge_mode_valid(struct drm_bridge *bridge,
755 const struct drm_display_info *info,
756 const struct drm_display_mode *mode)
757 {
758 struct mtk_dpi *dpi = bridge_to_dpi(bridge);
759
760 if (mode->clock > dpi->conf->max_clock_khz)
761 return MODE_CLOCK_HIGH;
762
763 return MODE_OK;
764 }
765
766 static const struct drm_bridge_funcs mtk_dpi_bridge_funcs = {
767 .attach = mtk_dpi_bridge_attach,
768 .mode_set = mtk_dpi_bridge_mode_set,
769 .mode_valid = mtk_dpi_bridge_mode_valid,
770 .disable = mtk_dpi_bridge_disable,
771 .enable = mtk_dpi_bridge_enable,
772 .atomic_check = mtk_dpi_bridge_atomic_check,
773 .atomic_get_output_bus_fmts = mtk_dpi_bridge_atomic_get_output_bus_fmts,
774 .atomic_get_input_bus_fmts = mtk_dpi_bridge_atomic_get_input_bus_fmts,
775 .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
776 .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
777 .atomic_reset = drm_atomic_helper_bridge_reset,
778 };
779
mtk_dpi_start(struct device * dev)780 void mtk_dpi_start(struct device *dev)
781 {
782 struct mtk_dpi *dpi = dev_get_drvdata(dev);
783
784 mtk_dpi_power_on(dpi);
785 }
786
mtk_dpi_stop(struct device * dev)787 void mtk_dpi_stop(struct device *dev)
788 {
789 struct mtk_dpi *dpi = dev_get_drvdata(dev);
790
791 mtk_dpi_power_off(dpi);
792 }
793
mtk_dpi_bind(struct device * dev,struct device * master,void * data)794 static int mtk_dpi_bind(struct device *dev, struct device *master, void *data)
795 {
796 struct mtk_dpi *dpi = dev_get_drvdata(dev);
797 struct drm_device *drm_dev = data;
798 struct mtk_drm_private *priv = drm_dev->dev_private;
799 int ret;
800
801 dpi->mmsys_dev = priv->mmsys_dev;
802 ret = drm_simple_encoder_init(drm_dev, &dpi->encoder,
803 DRM_MODE_ENCODER_TMDS);
804 if (ret) {
805 dev_err(dev, "Failed to initialize decoder: %d\n", ret);
806 return ret;
807 }
808
809 dpi->encoder.possible_crtcs = mtk_drm_find_possible_crtc_by_comp(drm_dev, dpi->dev);
810
811 ret = drm_bridge_attach(&dpi->encoder, &dpi->bridge, NULL,
812 DRM_BRIDGE_ATTACH_NO_CONNECTOR);
813 if (ret)
814 goto err_cleanup;
815
816 dpi->connector = drm_bridge_connector_init(drm_dev, &dpi->encoder);
817 if (IS_ERR(dpi->connector)) {
818 dev_err(dev, "Unable to create bridge connector\n");
819 ret = PTR_ERR(dpi->connector);
820 goto err_cleanup;
821 }
822 drm_connector_attach_encoder(dpi->connector, &dpi->encoder);
823
824 return 0;
825
826 err_cleanup:
827 drm_encoder_cleanup(&dpi->encoder);
828 return ret;
829 }
830
mtk_dpi_unbind(struct device * dev,struct device * master,void * data)831 static void mtk_dpi_unbind(struct device *dev, struct device *master,
832 void *data)
833 {
834 struct mtk_dpi *dpi = dev_get_drvdata(dev);
835
836 drm_encoder_cleanup(&dpi->encoder);
837 }
838
839 static const struct component_ops mtk_dpi_component_ops = {
840 .bind = mtk_dpi_bind,
841 .unbind = mtk_dpi_unbind,
842 };
843
mt8173_calculate_factor(int clock)844 static unsigned int mt8173_calculate_factor(int clock)
845 {
846 if (clock <= 27000)
847 return 3 << 4;
848 else if (clock <= 84000)
849 return 3 << 3;
850 else if (clock <= 167000)
851 return 3 << 2;
852 else
853 return 3 << 1;
854 }
855
mt2701_calculate_factor(int clock)856 static unsigned int mt2701_calculate_factor(int clock)
857 {
858 if (clock <= 64000)
859 return 4;
860 else if (clock <= 128000)
861 return 2;
862 else
863 return 1;
864 }
865
mt8183_calculate_factor(int clock)866 static unsigned int mt8183_calculate_factor(int clock)
867 {
868 if (clock <= 27000)
869 return 8;
870 else if (clock <= 167000)
871 return 4;
872 else
873 return 2;
874 }
875
mt8195_dpintf_calculate_factor(int clock)876 static unsigned int mt8195_dpintf_calculate_factor(int clock)
877 {
878 if (clock < 70000)
879 return 4;
880 else if (clock < 200000)
881 return 2;
882 else
883 return 1;
884 }
885
886 static const u32 mt8173_output_fmts[] = {
887 MEDIA_BUS_FMT_RGB888_1X24,
888 };
889
890 static const u32 mt8183_output_fmts[] = {
891 MEDIA_BUS_FMT_RGB888_2X12_LE,
892 MEDIA_BUS_FMT_RGB888_2X12_BE,
893 };
894
895 static const u32 mt8195_output_fmts[] = {
896 MEDIA_BUS_FMT_RGB888_1X24,
897 MEDIA_BUS_FMT_YUYV8_1X16,
898 };
899
900 static const struct mtk_dpi_conf mt8173_conf = {
901 .cal_factor = mt8173_calculate_factor,
902 .reg_h_fre_con = 0xe0,
903 .max_clock_khz = 300000,
904 .output_fmts = mt8173_output_fmts,
905 .num_output_fmts = ARRAY_SIZE(mt8173_output_fmts),
906 .pixels_per_iter = 1,
907 .is_ck_de_pol = true,
908 .swap_input_support = true,
909 .support_direct_pin = true,
910 .dimension_mask = HPW_MASK,
911 .hvsize_mask = HSIZE_MASK,
912 .channel_swap_shift = CH_SWAP,
913 .yuv422_en_bit = YUV422_EN,
914 .csc_enable_bit = CSC_ENABLE,
915 };
916
917 static const struct mtk_dpi_conf mt2701_conf = {
918 .cal_factor = mt2701_calculate_factor,
919 .reg_h_fre_con = 0xb0,
920 .edge_sel_en = true,
921 .max_clock_khz = 150000,
922 .output_fmts = mt8173_output_fmts,
923 .num_output_fmts = ARRAY_SIZE(mt8173_output_fmts),
924 .pixels_per_iter = 1,
925 .is_ck_de_pol = true,
926 .swap_input_support = true,
927 .support_direct_pin = true,
928 .dimension_mask = HPW_MASK,
929 .hvsize_mask = HSIZE_MASK,
930 .channel_swap_shift = CH_SWAP,
931 .yuv422_en_bit = YUV422_EN,
932 .csc_enable_bit = CSC_ENABLE,
933 };
934
935 static const struct mtk_dpi_conf mt8183_conf = {
936 .cal_factor = mt8183_calculate_factor,
937 .reg_h_fre_con = 0xe0,
938 .max_clock_khz = 100000,
939 .output_fmts = mt8183_output_fmts,
940 .num_output_fmts = ARRAY_SIZE(mt8183_output_fmts),
941 .pixels_per_iter = 1,
942 .is_ck_de_pol = true,
943 .swap_input_support = true,
944 .support_direct_pin = true,
945 .dimension_mask = HPW_MASK,
946 .hvsize_mask = HSIZE_MASK,
947 .channel_swap_shift = CH_SWAP,
948 .yuv422_en_bit = YUV422_EN,
949 .csc_enable_bit = CSC_ENABLE,
950 };
951
952 static const struct mtk_dpi_conf mt8186_conf = {
953 .cal_factor = mt8183_calculate_factor,
954 .reg_h_fre_con = 0xe0,
955 .max_clock_khz = 150000,
956 .output_fmts = mt8183_output_fmts,
957 .num_output_fmts = ARRAY_SIZE(mt8183_output_fmts),
958 .edge_cfg_in_mmsys = true,
959 .pixels_per_iter = 1,
960 .is_ck_de_pol = true,
961 .swap_input_support = true,
962 .support_direct_pin = true,
963 .dimension_mask = HPW_MASK,
964 .hvsize_mask = HSIZE_MASK,
965 .channel_swap_shift = CH_SWAP,
966 .yuv422_en_bit = YUV422_EN,
967 .csc_enable_bit = CSC_ENABLE,
968 };
969
970 static const struct mtk_dpi_conf mt8192_conf = {
971 .cal_factor = mt8183_calculate_factor,
972 .reg_h_fre_con = 0xe0,
973 .max_clock_khz = 150000,
974 .output_fmts = mt8183_output_fmts,
975 .num_output_fmts = ARRAY_SIZE(mt8183_output_fmts),
976 .pixels_per_iter = 1,
977 .is_ck_de_pol = true,
978 .swap_input_support = true,
979 .support_direct_pin = true,
980 .dimension_mask = HPW_MASK,
981 .hvsize_mask = HSIZE_MASK,
982 .channel_swap_shift = CH_SWAP,
983 .yuv422_en_bit = YUV422_EN,
984 .csc_enable_bit = CSC_ENABLE,
985 };
986
987 static const struct mtk_dpi_conf mt8195_dpintf_conf = {
988 .cal_factor = mt8195_dpintf_calculate_factor,
989 .max_clock_khz = 600000,
990 .output_fmts = mt8195_output_fmts,
991 .num_output_fmts = ARRAY_SIZE(mt8195_output_fmts),
992 .pixels_per_iter = 4,
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 .input_2p_en_bit = DPINTF_INPUT_2P_EN,
999 };
1000
mtk_dpi_probe(struct platform_device * pdev)1001 static int mtk_dpi_probe(struct platform_device *pdev)
1002 {
1003 struct device *dev = &pdev->dev;
1004 struct mtk_dpi *dpi;
1005 int ret;
1006
1007 dpi = devm_kzalloc(dev, sizeof(*dpi), GFP_KERNEL);
1008 if (!dpi)
1009 return -ENOMEM;
1010
1011 dpi->dev = dev;
1012 dpi->conf = (struct mtk_dpi_conf *)of_device_get_match_data(dev);
1013 dpi->output_fmt = MEDIA_BUS_FMT_RGB888_1X24;
1014
1015 dpi->pinctrl = devm_pinctrl_get(&pdev->dev);
1016 if (IS_ERR(dpi->pinctrl)) {
1017 dpi->pinctrl = NULL;
1018 dev_dbg(&pdev->dev, "Cannot find pinctrl!\n");
1019 }
1020 if (dpi->pinctrl) {
1021 dpi->pins_gpio = pinctrl_lookup_state(dpi->pinctrl, "sleep");
1022 if (IS_ERR(dpi->pins_gpio)) {
1023 dpi->pins_gpio = NULL;
1024 dev_dbg(&pdev->dev, "Cannot find pinctrl idle!\n");
1025 }
1026 if (dpi->pins_gpio)
1027 pinctrl_select_state(dpi->pinctrl, dpi->pins_gpio);
1028
1029 dpi->pins_dpi = pinctrl_lookup_state(dpi->pinctrl, "default");
1030 if (IS_ERR(dpi->pins_dpi)) {
1031 dpi->pins_dpi = NULL;
1032 dev_dbg(&pdev->dev, "Cannot find pinctrl active!\n");
1033 }
1034 }
1035 dpi->regs = devm_platform_ioremap_resource(pdev, 0);
1036 if (IS_ERR(dpi->regs))
1037 return dev_err_probe(dev, PTR_ERR(dpi->regs),
1038 "Failed to ioremap mem resource\n");
1039
1040 dpi->engine_clk = devm_clk_get(dev, "engine");
1041 if (IS_ERR(dpi->engine_clk))
1042 return dev_err_probe(dev, PTR_ERR(dpi->engine_clk),
1043 "Failed to get engine clock\n");
1044
1045 dpi->pixel_clk = devm_clk_get(dev, "pixel");
1046 if (IS_ERR(dpi->pixel_clk))
1047 return dev_err_probe(dev, PTR_ERR(dpi->pixel_clk),
1048 "Failed to get pixel clock\n");
1049
1050 dpi->tvd_clk = devm_clk_get(dev, "pll");
1051 if (IS_ERR(dpi->tvd_clk))
1052 return dev_err_probe(dev, PTR_ERR(dpi->tvd_clk),
1053 "Failed to get tvdpll clock\n");
1054
1055 dpi->irq = platform_get_irq(pdev, 0);
1056 if (dpi->irq < 0)
1057 return dpi->irq;
1058
1059 dpi->next_bridge = devm_drm_of_get_bridge(dev, dev->of_node, 0, 0);
1060 if (IS_ERR(dpi->next_bridge))
1061 return dev_err_probe(dev, PTR_ERR(dpi->next_bridge),
1062 "Failed to get bridge\n");
1063
1064 dev_info(dev, "Found bridge node: %pOF\n", dpi->next_bridge->of_node);
1065
1066 platform_set_drvdata(pdev, dpi);
1067
1068 dpi->bridge.funcs = &mtk_dpi_bridge_funcs;
1069 dpi->bridge.of_node = dev->of_node;
1070 dpi->bridge.type = DRM_MODE_CONNECTOR_DPI;
1071
1072 ret = devm_drm_bridge_add(dev, &dpi->bridge);
1073 if (ret)
1074 return ret;
1075
1076 ret = component_add(dev, &mtk_dpi_component_ops);
1077 if (ret)
1078 return dev_err_probe(dev, ret, "Failed to add component.\n");
1079
1080 return 0;
1081 }
1082
mtk_dpi_remove(struct platform_device * pdev)1083 static void mtk_dpi_remove(struct platform_device *pdev)
1084 {
1085 component_del(&pdev->dev, &mtk_dpi_component_ops);
1086 }
1087
1088 static const struct of_device_id mtk_dpi_of_ids[] = {
1089 { .compatible = "mediatek,mt2701-dpi", .data = &mt2701_conf },
1090 { .compatible = "mediatek,mt8173-dpi", .data = &mt8173_conf },
1091 { .compatible = "mediatek,mt8183-dpi", .data = &mt8183_conf },
1092 { .compatible = "mediatek,mt8186-dpi", .data = &mt8186_conf },
1093 { .compatible = "mediatek,mt8188-dp-intf", .data = &mt8195_dpintf_conf },
1094 { .compatible = "mediatek,mt8192-dpi", .data = &mt8192_conf },
1095 { .compatible = "mediatek,mt8195-dp-intf", .data = &mt8195_dpintf_conf },
1096 { /* sentinel */ },
1097 };
1098 MODULE_DEVICE_TABLE(of, mtk_dpi_of_ids);
1099
1100 struct platform_driver mtk_dpi_driver = {
1101 .probe = mtk_dpi_probe,
1102 .remove_new = mtk_dpi_remove,
1103 .driver = {
1104 .name = "mediatek-dpi",
1105 .of_match_table = mtk_dpi_of_ids,
1106 },
1107 };
1108