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drm/amd/display: Check hpd_gpio for NULL before accessing it
[thirdparty/kernel/stable.git] / drivers / gpu / drm / mediatek / mtk_hdmi.c
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_atomic_helper.h>
16 #include <drm/drm_crtc.h>
17 #include <drm/drm_crtc_helper.h>
18 #include <drm/drm_edid.h>
19 #include <linux/arm-smccc.h>
20 #include <linux/clk.h>
21 #include <linux/delay.h>
22 #include <linux/hdmi.h>
23 #include <linux/i2c.h>
24 #include <linux/io.h>
25 #include <linux/kernel.h>
26 #include <linux/mfd/syscon.h>
27 #include <linux/of_platform.h>
28 #include <linux/of.h>
29 #include <linux/of_gpio.h>
30 #include <linux/of_graph.h>
31 #include <linux/phy/phy.h>
32 #include <linux/platform_device.h>
33 #include <linux/regmap.h>
34 #include <sound/hdmi-codec.h>
35 #include "mtk_cec.h"
36 #include "mtk_hdmi.h"
37 #include "mtk_hdmi_regs.h"
38
39 #define NCTS_BYTES 7
40
41 enum mtk_hdmi_clk_id {
42 MTK_HDMI_CLK_HDMI_PIXEL,
43 MTK_HDMI_CLK_HDMI_PLL,
44 MTK_HDMI_CLK_AUD_BCLK,
45 MTK_HDMI_CLK_AUD_SPDIF,
46 MTK_HDMI_CLK_COUNT
47 };
48
49 enum hdmi_aud_input_type {
50 HDMI_AUD_INPUT_I2S = 0,
51 HDMI_AUD_INPUT_SPDIF,
52 };
53
54 enum hdmi_aud_i2s_fmt {
55 HDMI_I2S_MODE_RJT_24BIT = 0,
56 HDMI_I2S_MODE_RJT_16BIT,
57 HDMI_I2S_MODE_LJT_24BIT,
58 HDMI_I2S_MODE_LJT_16BIT,
59 HDMI_I2S_MODE_I2S_24BIT,
60 HDMI_I2S_MODE_I2S_16BIT
61 };
62
63 enum hdmi_aud_mclk {
64 HDMI_AUD_MCLK_128FS,
65 HDMI_AUD_MCLK_192FS,
66 HDMI_AUD_MCLK_256FS,
67 HDMI_AUD_MCLK_384FS,
68 HDMI_AUD_MCLK_512FS,
69 HDMI_AUD_MCLK_768FS,
70 HDMI_AUD_MCLK_1152FS,
71 };
72
73 enum hdmi_aud_channel_type {
74 HDMI_AUD_CHAN_TYPE_1_0 = 0,
75 HDMI_AUD_CHAN_TYPE_1_1,
76 HDMI_AUD_CHAN_TYPE_2_0,
77 HDMI_AUD_CHAN_TYPE_2_1,
78 HDMI_AUD_CHAN_TYPE_3_0,
79 HDMI_AUD_CHAN_TYPE_3_1,
80 HDMI_AUD_CHAN_TYPE_4_0,
81 HDMI_AUD_CHAN_TYPE_4_1,
82 HDMI_AUD_CHAN_TYPE_5_0,
83 HDMI_AUD_CHAN_TYPE_5_1,
84 HDMI_AUD_CHAN_TYPE_6_0,
85 HDMI_AUD_CHAN_TYPE_6_1,
86 HDMI_AUD_CHAN_TYPE_7_0,
87 HDMI_AUD_CHAN_TYPE_7_1,
88 HDMI_AUD_CHAN_TYPE_3_0_LRS,
89 HDMI_AUD_CHAN_TYPE_3_1_LRS,
90 HDMI_AUD_CHAN_TYPE_4_0_CLRS,
91 HDMI_AUD_CHAN_TYPE_4_1_CLRS,
92 HDMI_AUD_CHAN_TYPE_6_1_CS,
93 HDMI_AUD_CHAN_TYPE_6_1_CH,
94 HDMI_AUD_CHAN_TYPE_6_1_OH,
95 HDMI_AUD_CHAN_TYPE_6_1_CHR,
96 HDMI_AUD_CHAN_TYPE_7_1_LH_RH,
97 HDMI_AUD_CHAN_TYPE_7_1_LSR_RSR,
98 HDMI_AUD_CHAN_TYPE_7_1_LC_RC,
99 HDMI_AUD_CHAN_TYPE_7_1_LW_RW,
100 HDMI_AUD_CHAN_TYPE_7_1_LSD_RSD,
101 HDMI_AUD_CHAN_TYPE_7_1_LSS_RSS,
102 HDMI_AUD_CHAN_TYPE_7_1_LHS_RHS,
103 HDMI_AUD_CHAN_TYPE_7_1_CS_CH,
104 HDMI_AUD_CHAN_TYPE_7_1_CS_OH,
105 HDMI_AUD_CHAN_TYPE_7_1_CS_CHR,
106 HDMI_AUD_CHAN_TYPE_7_1_CH_OH,
107 HDMI_AUD_CHAN_TYPE_7_1_CH_CHR,
108 HDMI_AUD_CHAN_TYPE_7_1_OH_CHR,
109 HDMI_AUD_CHAN_TYPE_7_1_LSS_RSS_LSR_RSR,
110 HDMI_AUD_CHAN_TYPE_6_0_CS,
111 HDMI_AUD_CHAN_TYPE_6_0_CH,
112 HDMI_AUD_CHAN_TYPE_6_0_OH,
113 HDMI_AUD_CHAN_TYPE_6_0_CHR,
114 HDMI_AUD_CHAN_TYPE_7_0_LH_RH,
115 HDMI_AUD_CHAN_TYPE_7_0_LSR_RSR,
116 HDMI_AUD_CHAN_TYPE_7_0_LC_RC,
117 HDMI_AUD_CHAN_TYPE_7_0_LW_RW,
118 HDMI_AUD_CHAN_TYPE_7_0_LSD_RSD,
119 HDMI_AUD_CHAN_TYPE_7_0_LSS_RSS,
120 HDMI_AUD_CHAN_TYPE_7_0_LHS_RHS,
121 HDMI_AUD_CHAN_TYPE_7_0_CS_CH,
122 HDMI_AUD_CHAN_TYPE_7_0_CS_OH,
123 HDMI_AUD_CHAN_TYPE_7_0_CS_CHR,
124 HDMI_AUD_CHAN_TYPE_7_0_CH_OH,
125 HDMI_AUD_CHAN_TYPE_7_0_CH_CHR,
126 HDMI_AUD_CHAN_TYPE_7_0_OH_CHR,
127 HDMI_AUD_CHAN_TYPE_7_0_LSS_RSS_LSR_RSR,
128 HDMI_AUD_CHAN_TYPE_8_0_LH_RH_CS,
129 HDMI_AUD_CHAN_TYPE_UNKNOWN = 0xFF
130 };
131
132 enum hdmi_aud_channel_swap_type {
133 HDMI_AUD_SWAP_LR,
134 HDMI_AUD_SWAP_LFE_CC,
135 HDMI_AUD_SWAP_LSRS,
136 HDMI_AUD_SWAP_RLS_RRS,
137 HDMI_AUD_SWAP_LR_STATUS,
138 };
139
140 struct hdmi_audio_param {
141 enum hdmi_audio_coding_type aud_codec;
142 enum hdmi_audio_sample_size aud_sampe_size;
143 enum hdmi_aud_input_type aud_input_type;
144 enum hdmi_aud_i2s_fmt aud_i2s_fmt;
145 enum hdmi_aud_mclk aud_mclk;
146 enum hdmi_aud_channel_type aud_input_chan_type;
147 struct hdmi_codec_params codec_params;
148 };
149
150 struct mtk_hdmi {
151 struct drm_bridge bridge;
152 struct drm_bridge *next_bridge;
153 struct drm_connector conn;
154 struct device *dev;
155 struct phy *phy;
156 struct device *cec_dev;
157 struct i2c_adapter *ddc_adpt;
158 struct clk *clk[MTK_HDMI_CLK_COUNT];
159 struct drm_display_mode mode;
160 bool dvi_mode;
161 u32 min_clock;
162 u32 max_clock;
163 u32 max_hdisplay;
164 u32 max_vdisplay;
165 u32 ibias;
166 u32 ibias_up;
167 struct regmap *sys_regmap;
168 unsigned int sys_offset;
169 void __iomem *regs;
170 enum hdmi_colorspace csp;
171 struct hdmi_audio_param aud_param;
172 bool audio_enable;
173 bool powered;
174 bool enabled;
175 };
176
177 static inline struct mtk_hdmi *hdmi_ctx_from_bridge(struct drm_bridge *b)
178 {
179 return container_of(b, struct mtk_hdmi, bridge);
180 }
181
182 static inline struct mtk_hdmi *hdmi_ctx_from_conn(struct drm_connector *c)
183 {
184 return container_of(c, struct mtk_hdmi, conn);
185 }
186
187 static u32 mtk_hdmi_read(struct mtk_hdmi *hdmi, u32 offset)
188 {
189 return readl(hdmi->regs + offset);
190 }
191
192 static void mtk_hdmi_write(struct mtk_hdmi *hdmi, u32 offset, u32 val)
193 {
194 writel(val, hdmi->regs + offset);
195 }
196
197 static void mtk_hdmi_clear_bits(struct mtk_hdmi *hdmi, u32 offset, u32 bits)
198 {
199 void __iomem *reg = hdmi->regs + offset;
200 u32 tmp;
201
202 tmp = readl(reg);
203 tmp &= ~bits;
204 writel(tmp, reg);
205 }
206
207 static void mtk_hdmi_set_bits(struct mtk_hdmi *hdmi, u32 offset, u32 bits)
208 {
209 void __iomem *reg = hdmi->regs + offset;
210 u32 tmp;
211
212 tmp = readl(reg);
213 tmp |= bits;
214 writel(tmp, reg);
215 }
216
217 static void mtk_hdmi_mask(struct mtk_hdmi *hdmi, u32 offset, u32 val, u32 mask)
218 {
219 void __iomem *reg = hdmi->regs + offset;
220 u32 tmp;
221
222 tmp = readl(reg);
223 tmp = (tmp & ~mask) | (val & mask);
224 writel(tmp, reg);
225 }
226
227 static void mtk_hdmi_hw_vid_black(struct mtk_hdmi *hdmi, bool black)
228 {
229 mtk_hdmi_mask(hdmi, VIDEO_CFG_4, black ? GEN_RGB : NORMAL_PATH,
230 VIDEO_SOURCE_SEL);
231 }
232
233 static void mtk_hdmi_hw_make_reg_writable(struct mtk_hdmi *hdmi, bool enable)
234 {
235 struct arm_smccc_res res;
236 struct mtk_hdmi_phy *hdmi_phy = phy_get_drvdata(hdmi->phy);
237
238 /*
239 * MT8173 HDMI hardware has an output control bit to enable/disable HDMI
240 * output. This bit can only be controlled in ARM supervisor mode.
241 * The ARM trusted firmware provides an API for the HDMI driver to set
242 * this control bit to enable HDMI output in supervisor mode.
243 */
244 if (hdmi_phy->conf && hdmi_phy->conf->tz_disabled)
245 regmap_update_bits(hdmi->sys_regmap,
246 hdmi->sys_offset + HDMI_SYS_CFG20,
247 0x80008005, enable ? 0x80000005 : 0x8000);
248 else
249 arm_smccc_smc(MTK_SIP_SET_AUTHORIZED_SECURE_REG, 0x14000904,
250 0x80000000, 0, 0, 0, 0, 0, &res);
251
252 regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG20,
253 HDMI_PCLK_FREE_RUN, enable ? HDMI_PCLK_FREE_RUN : 0);
254 regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG1C,
255 HDMI_ON | ANLG_ON, enable ? (HDMI_ON | ANLG_ON) : 0);
256 }
257
258 static void mtk_hdmi_hw_1p4_version_enable(struct mtk_hdmi *hdmi, bool enable)
259 {
260 regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG20,
261 HDMI2P0_EN, enable ? 0 : HDMI2P0_EN);
262 }
263
264 static void mtk_hdmi_hw_aud_mute(struct mtk_hdmi *hdmi)
265 {
266 mtk_hdmi_set_bits(hdmi, GRL_AUDIO_CFG, AUDIO_ZERO);
267 }
268
269 static void mtk_hdmi_hw_aud_unmute(struct mtk_hdmi *hdmi)
270 {
271 mtk_hdmi_clear_bits(hdmi, GRL_AUDIO_CFG, AUDIO_ZERO);
272 }
273
274 static void mtk_hdmi_hw_reset(struct mtk_hdmi *hdmi)
275 {
276 regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG1C,
277 HDMI_RST, HDMI_RST);
278 regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG1C,
279 HDMI_RST, 0);
280 mtk_hdmi_clear_bits(hdmi, GRL_CFG3, CFG3_CONTROL_PACKET_DELAY);
281 regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG1C,
282 ANLG_ON, ANLG_ON);
283 }
284
285 static void mtk_hdmi_hw_enable_notice(struct mtk_hdmi *hdmi, bool enable_notice)
286 {
287 mtk_hdmi_mask(hdmi, GRL_CFG2, enable_notice ? CFG2_NOTICE_EN : 0,
288 CFG2_NOTICE_EN);
289 }
290
291 static void mtk_hdmi_hw_write_int_mask(struct mtk_hdmi *hdmi, u32 int_mask)
292 {
293 mtk_hdmi_write(hdmi, GRL_INT_MASK, int_mask);
294 }
295
296 static void mtk_hdmi_hw_enable_dvi_mode(struct mtk_hdmi *hdmi, bool enable)
297 {
298 mtk_hdmi_mask(hdmi, GRL_CFG1, enable ? CFG1_DVI : 0, CFG1_DVI);
299 }
300
301 static void mtk_hdmi_hw_send_info_frame(struct mtk_hdmi *hdmi, u8 *buffer,
302 u8 len)
303 {
304 u32 ctrl_reg = GRL_CTRL;
305 int i;
306 u8 *frame_data;
307 enum hdmi_infoframe_type frame_type;
308 u8 frame_ver;
309 u8 frame_len;
310 u8 checksum;
311 int ctrl_frame_en = 0;
312
313 frame_type = *buffer;
314 buffer += 1;
315 frame_ver = *buffer;
316 buffer += 1;
317 frame_len = *buffer;
318 buffer += 1;
319 checksum = *buffer;
320 buffer += 1;
321 frame_data = buffer;
322
323 dev_dbg(hdmi->dev,
324 "frame_type:0x%x,frame_ver:0x%x,frame_len:0x%x,checksum:0x%x\n",
325 frame_type, frame_ver, frame_len, checksum);
326
327 switch (frame_type) {
328 case HDMI_INFOFRAME_TYPE_AVI:
329 ctrl_frame_en = CTRL_AVI_EN;
330 ctrl_reg = GRL_CTRL;
331 break;
332 case HDMI_INFOFRAME_TYPE_SPD:
333 ctrl_frame_en = CTRL_SPD_EN;
334 ctrl_reg = GRL_CTRL;
335 break;
336 case HDMI_INFOFRAME_TYPE_AUDIO:
337 ctrl_frame_en = CTRL_AUDIO_EN;
338 ctrl_reg = GRL_CTRL;
339 break;
340 case HDMI_INFOFRAME_TYPE_VENDOR:
341 ctrl_frame_en = VS_EN;
342 ctrl_reg = GRL_ACP_ISRC_CTRL;
343 break;
344 }
345 mtk_hdmi_clear_bits(hdmi, ctrl_reg, ctrl_frame_en);
346 mtk_hdmi_write(hdmi, GRL_INFOFRM_TYPE, frame_type);
347 mtk_hdmi_write(hdmi, GRL_INFOFRM_VER, frame_ver);
348 mtk_hdmi_write(hdmi, GRL_INFOFRM_LNG, frame_len);
349
350 mtk_hdmi_write(hdmi, GRL_IFM_PORT, checksum);
351 for (i = 0; i < frame_len; i++)
352 mtk_hdmi_write(hdmi, GRL_IFM_PORT, frame_data[i]);
353
354 mtk_hdmi_set_bits(hdmi, ctrl_reg, ctrl_frame_en);
355 }
356
357 static void mtk_hdmi_hw_send_aud_packet(struct mtk_hdmi *hdmi, bool enable)
358 {
359 mtk_hdmi_mask(hdmi, GRL_SHIFT_R2, enable ? 0 : AUDIO_PACKET_OFF,
360 AUDIO_PACKET_OFF);
361 }
362
363 static void mtk_hdmi_hw_config_sys(struct mtk_hdmi *hdmi)
364 {
365 regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG20,
366 HDMI_OUT_FIFO_EN | MHL_MODE_ON, 0);
367 usleep_range(2000, 4000);
368 regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG20,
369 HDMI_OUT_FIFO_EN | MHL_MODE_ON, HDMI_OUT_FIFO_EN);
370 }
371
372 static void mtk_hdmi_hw_set_deep_color_mode(struct mtk_hdmi *hdmi)
373 {
374 regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG20,
375 DEEP_COLOR_MODE_MASK | DEEP_COLOR_EN,
376 COLOR_8BIT_MODE);
377 }
378
379 static void mtk_hdmi_hw_send_av_mute(struct mtk_hdmi *hdmi)
380 {
381 mtk_hdmi_clear_bits(hdmi, GRL_CFG4, CTRL_AVMUTE);
382 usleep_range(2000, 4000);
383 mtk_hdmi_set_bits(hdmi, GRL_CFG4, CTRL_AVMUTE);
384 }
385
386 static void mtk_hdmi_hw_send_av_unmute(struct mtk_hdmi *hdmi)
387 {
388 mtk_hdmi_mask(hdmi, GRL_CFG4, CFG4_AV_UNMUTE_EN,
389 CFG4_AV_UNMUTE_EN | CFG4_AV_UNMUTE_SET);
390 usleep_range(2000, 4000);
391 mtk_hdmi_mask(hdmi, GRL_CFG4, CFG4_AV_UNMUTE_SET,
392 CFG4_AV_UNMUTE_EN | CFG4_AV_UNMUTE_SET);
393 }
394
395 static void mtk_hdmi_hw_ncts_enable(struct mtk_hdmi *hdmi, bool on)
396 {
397 mtk_hdmi_mask(hdmi, GRL_CTS_CTRL, on ? 0 : CTS_CTRL_SOFT,
398 CTS_CTRL_SOFT);
399 }
400
401 static void mtk_hdmi_hw_ncts_auto_write_enable(struct mtk_hdmi *hdmi,
402 bool enable)
403 {
404 mtk_hdmi_mask(hdmi, GRL_CTS_CTRL, enable ? NCTS_WRI_ANYTIME : 0,
405 NCTS_WRI_ANYTIME);
406 }
407
408 static void mtk_hdmi_hw_msic_setting(struct mtk_hdmi *hdmi,
409 struct drm_display_mode *mode)
410 {
411 mtk_hdmi_clear_bits(hdmi, GRL_CFG4, CFG4_MHL_MODE);
412
413 if (mode->flags & DRM_MODE_FLAG_INTERLACE &&
414 mode->clock == 74250 &&
415 mode->vdisplay == 1080)
416 mtk_hdmi_clear_bits(hdmi, GRL_CFG2, CFG2_MHL_DE_SEL);
417 else
418 mtk_hdmi_set_bits(hdmi, GRL_CFG2, CFG2_MHL_DE_SEL);
419 }
420
421 static void mtk_hdmi_hw_aud_set_channel_swap(struct mtk_hdmi *hdmi,
422 enum hdmi_aud_channel_swap_type swap)
423 {
424 u8 swap_bit;
425
426 switch (swap) {
427 case HDMI_AUD_SWAP_LR:
428 swap_bit = LR_SWAP;
429 break;
430 case HDMI_AUD_SWAP_LFE_CC:
431 swap_bit = LFE_CC_SWAP;
432 break;
433 case HDMI_AUD_SWAP_LSRS:
434 swap_bit = LSRS_SWAP;
435 break;
436 case HDMI_AUD_SWAP_RLS_RRS:
437 swap_bit = RLS_RRS_SWAP;
438 break;
439 case HDMI_AUD_SWAP_LR_STATUS:
440 swap_bit = LR_STATUS_SWAP;
441 break;
442 default:
443 swap_bit = LFE_CC_SWAP;
444 break;
445 }
446 mtk_hdmi_mask(hdmi, GRL_CH_SWAP, swap_bit, 0xff);
447 }
448
449 static void mtk_hdmi_hw_aud_set_bit_num(struct mtk_hdmi *hdmi,
450 enum hdmi_audio_sample_size bit_num)
451 {
452 u32 val;
453
454 switch (bit_num) {
455 case HDMI_AUDIO_SAMPLE_SIZE_16:
456 val = AOUT_16BIT;
457 break;
458 case HDMI_AUDIO_SAMPLE_SIZE_20:
459 val = AOUT_20BIT;
460 break;
461 case HDMI_AUDIO_SAMPLE_SIZE_24:
462 case HDMI_AUDIO_SAMPLE_SIZE_STREAM:
463 val = AOUT_24BIT;
464 break;
465 }
466
467 mtk_hdmi_mask(hdmi, GRL_AOUT_CFG, val, AOUT_BNUM_SEL_MASK);
468 }
469
470 static void mtk_hdmi_hw_aud_set_i2s_fmt(struct mtk_hdmi *hdmi,
471 enum hdmi_aud_i2s_fmt i2s_fmt)
472 {
473 u32 val;
474
475 val = mtk_hdmi_read(hdmi, GRL_CFG0);
476 val &= ~(CFG0_W_LENGTH_MASK | CFG0_I2S_MODE_MASK);
477
478 switch (i2s_fmt) {
479 case HDMI_I2S_MODE_RJT_24BIT:
480 val |= CFG0_I2S_MODE_RTJ | CFG0_W_LENGTH_24BIT;
481 break;
482 case HDMI_I2S_MODE_RJT_16BIT:
483 val |= CFG0_I2S_MODE_RTJ | CFG0_W_LENGTH_16BIT;
484 break;
485 case HDMI_I2S_MODE_LJT_24BIT:
486 default:
487 val |= CFG0_I2S_MODE_LTJ | CFG0_W_LENGTH_24BIT;
488 break;
489 case HDMI_I2S_MODE_LJT_16BIT:
490 val |= CFG0_I2S_MODE_LTJ | CFG0_W_LENGTH_16BIT;
491 break;
492 case HDMI_I2S_MODE_I2S_24BIT:
493 val |= CFG0_I2S_MODE_I2S | CFG0_W_LENGTH_24BIT;
494 break;
495 case HDMI_I2S_MODE_I2S_16BIT:
496 val |= CFG0_I2S_MODE_I2S | CFG0_W_LENGTH_16BIT;
497 break;
498 }
499 mtk_hdmi_write(hdmi, GRL_CFG0, val);
500 }
501
502 static void mtk_hdmi_hw_audio_config(struct mtk_hdmi *hdmi, bool dst)
503 {
504 const u8 mask = HIGH_BIT_RATE | DST_NORMAL_DOUBLE | SACD_DST | DSD_SEL;
505 u8 val;
506
507 /* Disable high bitrate, set DST packet normal/double */
508 mtk_hdmi_clear_bits(hdmi, GRL_AOUT_CFG, HIGH_BIT_RATE_PACKET_ALIGN);
509
510 if (dst)
511 val = DST_NORMAL_DOUBLE | SACD_DST;
512 else
513 val = 0;
514
515 mtk_hdmi_mask(hdmi, GRL_AUDIO_CFG, val, mask);
516 }
517
518 static void mtk_hdmi_hw_aud_set_i2s_chan_num(struct mtk_hdmi *hdmi,
519 enum hdmi_aud_channel_type channel_type,
520 u8 channel_count)
521 {
522 unsigned int ch_switch;
523 u8 i2s_uv;
524
525 ch_switch = CH_SWITCH(7, 7) | CH_SWITCH(6, 6) |
526 CH_SWITCH(5, 5) | CH_SWITCH(4, 4) |
527 CH_SWITCH(3, 3) | CH_SWITCH(1, 2) |
528 CH_SWITCH(2, 1) | CH_SWITCH(0, 0);
529
530 if (channel_count == 2) {
531 i2s_uv = I2S_UV_CH_EN(0);
532 } else if (channel_count == 3 || channel_count == 4) {
533 if (channel_count == 4 &&
534 (channel_type == HDMI_AUD_CHAN_TYPE_3_0_LRS ||
535 channel_type == HDMI_AUD_CHAN_TYPE_4_0))
536 i2s_uv = I2S_UV_CH_EN(2) | I2S_UV_CH_EN(0);
537 else
538 i2s_uv = I2S_UV_CH_EN(3) | I2S_UV_CH_EN(2);
539 } else if (channel_count == 6 || channel_count == 5) {
540 if (channel_count == 6 &&
541 channel_type != HDMI_AUD_CHAN_TYPE_5_1 &&
542 channel_type != HDMI_AUD_CHAN_TYPE_4_1_CLRS) {
543 i2s_uv = I2S_UV_CH_EN(3) | I2S_UV_CH_EN(2) |
544 I2S_UV_CH_EN(1) | I2S_UV_CH_EN(0);
545 } else {
546 i2s_uv = I2S_UV_CH_EN(2) | I2S_UV_CH_EN(1) |
547 I2S_UV_CH_EN(0);
548 }
549 } else if (channel_count == 8 || channel_count == 7) {
550 i2s_uv = I2S_UV_CH_EN(3) | I2S_UV_CH_EN(2) |
551 I2S_UV_CH_EN(1) | I2S_UV_CH_EN(0);
552 } else {
553 i2s_uv = I2S_UV_CH_EN(0);
554 }
555
556 mtk_hdmi_write(hdmi, GRL_CH_SW0, ch_switch & 0xff);
557 mtk_hdmi_write(hdmi, GRL_CH_SW1, (ch_switch >> 8) & 0xff);
558 mtk_hdmi_write(hdmi, GRL_CH_SW2, (ch_switch >> 16) & 0xff);
559 mtk_hdmi_write(hdmi, GRL_I2S_UV, i2s_uv);
560 }
561
562 static void mtk_hdmi_hw_aud_set_input_type(struct mtk_hdmi *hdmi,
563 enum hdmi_aud_input_type input_type)
564 {
565 u32 val;
566
567 val = mtk_hdmi_read(hdmi, GRL_CFG1);
568 if (input_type == HDMI_AUD_INPUT_I2S &&
569 (val & CFG1_SPDIF) == CFG1_SPDIF) {
570 val &= ~CFG1_SPDIF;
571 } else if (input_type == HDMI_AUD_INPUT_SPDIF &&
572 (val & CFG1_SPDIF) == 0) {
573 val |= CFG1_SPDIF;
574 }
575 mtk_hdmi_write(hdmi, GRL_CFG1, val);
576 }
577
578 static void mtk_hdmi_hw_aud_set_channel_status(struct mtk_hdmi *hdmi,
579 u8 *channel_status)
580 {
581 int i;
582
583 for (i = 0; i < 5; i++) {
584 mtk_hdmi_write(hdmi, GRL_I2S_C_STA0 + i * 4, channel_status[i]);
585 mtk_hdmi_write(hdmi, GRL_L_STATUS_0 + i * 4, channel_status[i]);
586 mtk_hdmi_write(hdmi, GRL_R_STATUS_0 + i * 4, channel_status[i]);
587 }
588 for (; i < 24; i++) {
589 mtk_hdmi_write(hdmi, GRL_L_STATUS_0 + i * 4, 0);
590 mtk_hdmi_write(hdmi, GRL_R_STATUS_0 + i * 4, 0);
591 }
592 }
593
594 static void mtk_hdmi_hw_aud_src_reenable(struct mtk_hdmi *hdmi)
595 {
596 u32 val;
597
598 val = mtk_hdmi_read(hdmi, GRL_MIX_CTRL);
599 if (val & MIX_CTRL_SRC_EN) {
600 val &= ~MIX_CTRL_SRC_EN;
601 mtk_hdmi_write(hdmi, GRL_MIX_CTRL, val);
602 usleep_range(255, 512);
603 val |= MIX_CTRL_SRC_EN;
604 mtk_hdmi_write(hdmi, GRL_MIX_CTRL, val);
605 }
606 }
607
608 static void mtk_hdmi_hw_aud_src_disable(struct mtk_hdmi *hdmi)
609 {
610 u32 val;
611
612 val = mtk_hdmi_read(hdmi, GRL_MIX_CTRL);
613 val &= ~MIX_CTRL_SRC_EN;
614 mtk_hdmi_write(hdmi, GRL_MIX_CTRL, val);
615 mtk_hdmi_write(hdmi, GRL_SHIFT_L1, 0x00);
616 }
617
618 static void mtk_hdmi_hw_aud_set_mclk(struct mtk_hdmi *hdmi,
619 enum hdmi_aud_mclk mclk)
620 {
621 u32 val;
622
623 val = mtk_hdmi_read(hdmi, GRL_CFG5);
624 val &= CFG5_CD_RATIO_MASK;
625
626 switch (mclk) {
627 case HDMI_AUD_MCLK_128FS:
628 val |= CFG5_FS128;
629 break;
630 case HDMI_AUD_MCLK_256FS:
631 val |= CFG5_FS256;
632 break;
633 case HDMI_AUD_MCLK_384FS:
634 val |= CFG5_FS384;
635 break;
636 case HDMI_AUD_MCLK_512FS:
637 val |= CFG5_FS512;
638 break;
639 case HDMI_AUD_MCLK_768FS:
640 val |= CFG5_FS768;
641 break;
642 default:
643 val |= CFG5_FS256;
644 break;
645 }
646 mtk_hdmi_write(hdmi, GRL_CFG5, val);
647 }
648
649 struct hdmi_acr_n {
650 unsigned int clock;
651 unsigned int n[3];
652 };
653
654 /* Recommended N values from HDMI specification, tables 7-1 to 7-3 */
655 static const struct hdmi_acr_n hdmi_rec_n_table[] = {
656 /* Clock, N: 32kHz 44.1kHz 48kHz */
657 { 25175, { 4576, 7007, 6864 } },
658 { 74176, { 11648, 17836, 11648 } },
659 { 148352, { 11648, 8918, 5824 } },
660 { 296703, { 5824, 4459, 5824 } },
661 { 297000, { 3072, 4704, 5120 } },
662 { 0, { 4096, 6272, 6144 } }, /* all other TMDS clocks */
663 };
664
665 /**
666 * hdmi_recommended_n() - Return N value recommended by HDMI specification
667 * @freq: audio sample rate in Hz
668 * @clock: rounded TMDS clock in kHz
669 */
670 static unsigned int hdmi_recommended_n(unsigned int freq, unsigned int clock)
671 {
672 const struct hdmi_acr_n *recommended;
673 unsigned int i;
674
675 for (i = 0; i < ARRAY_SIZE(hdmi_rec_n_table) - 1; i++) {
676 if (clock == hdmi_rec_n_table[i].clock)
677 break;
678 }
679 recommended = hdmi_rec_n_table + i;
680
681 switch (freq) {
682 case 32000:
683 return recommended->n[0];
684 case 44100:
685 return recommended->n[1];
686 case 48000:
687 return recommended->n[2];
688 case 88200:
689 return recommended->n[1] * 2;
690 case 96000:
691 return recommended->n[2] * 2;
692 case 176400:
693 return recommended->n[1] * 4;
694 case 192000:
695 return recommended->n[2] * 4;
696 default:
697 return (128 * freq) / 1000;
698 }
699 }
700
701 static unsigned int hdmi_mode_clock_to_hz(unsigned int clock)
702 {
703 switch (clock) {
704 case 25175:
705 return 25174825; /* 25.2/1.001 MHz */
706 case 74176:
707 return 74175824; /* 74.25/1.001 MHz */
708 case 148352:
709 return 148351648; /* 148.5/1.001 MHz */
710 case 296703:
711 return 296703297; /* 297/1.001 MHz */
712 default:
713 return clock * 1000;
714 }
715 }
716
717 static unsigned int hdmi_expected_cts(unsigned int audio_sample_rate,
718 unsigned int tmds_clock, unsigned int n)
719 {
720 return DIV_ROUND_CLOSEST_ULL((u64)hdmi_mode_clock_to_hz(tmds_clock) * n,
721 128 * audio_sample_rate);
722 }
723
724 static void do_hdmi_hw_aud_set_ncts(struct mtk_hdmi *hdmi, unsigned int n,
725 unsigned int cts)
726 {
727 unsigned char val[NCTS_BYTES];
728 int i;
729
730 mtk_hdmi_write(hdmi, GRL_NCTS, 0);
731 mtk_hdmi_write(hdmi, GRL_NCTS, 0);
732 mtk_hdmi_write(hdmi, GRL_NCTS, 0);
733 memset(val, 0, sizeof(val));
734
735 val[0] = (cts >> 24) & 0xff;
736 val[1] = (cts >> 16) & 0xff;
737 val[2] = (cts >> 8) & 0xff;
738 val[3] = cts & 0xff;
739
740 val[4] = (n >> 16) & 0xff;
741 val[5] = (n >> 8) & 0xff;
742 val[6] = n & 0xff;
743
744 for (i = 0; i < NCTS_BYTES; i++)
745 mtk_hdmi_write(hdmi, GRL_NCTS, val[i]);
746 }
747
748 static void mtk_hdmi_hw_aud_set_ncts(struct mtk_hdmi *hdmi,
749 unsigned int sample_rate,
750 unsigned int clock)
751 {
752 unsigned int n, cts;
753
754 n = hdmi_recommended_n(sample_rate, clock);
755 cts = hdmi_expected_cts(sample_rate, clock, n);
756
757 dev_dbg(hdmi->dev, "%s: sample_rate=%u, clock=%d, cts=%u, n=%u\n",
758 __func__, sample_rate, clock, n, cts);
759
760 mtk_hdmi_mask(hdmi, DUMMY_304, AUDIO_I2S_NCTS_SEL_64,
761 AUDIO_I2S_NCTS_SEL);
762 do_hdmi_hw_aud_set_ncts(hdmi, n, cts);
763 }
764
765 static u8 mtk_hdmi_aud_get_chnl_count(enum hdmi_aud_channel_type channel_type)
766 {
767 switch (channel_type) {
768 case HDMI_AUD_CHAN_TYPE_1_0:
769 case HDMI_AUD_CHAN_TYPE_1_1:
770 case HDMI_AUD_CHAN_TYPE_2_0:
771 return 2;
772 case HDMI_AUD_CHAN_TYPE_2_1:
773 case HDMI_AUD_CHAN_TYPE_3_0:
774 return 3;
775 case HDMI_AUD_CHAN_TYPE_3_1:
776 case HDMI_AUD_CHAN_TYPE_4_0:
777 case HDMI_AUD_CHAN_TYPE_3_0_LRS:
778 return 4;
779 case HDMI_AUD_CHAN_TYPE_4_1:
780 case HDMI_AUD_CHAN_TYPE_5_0:
781 case HDMI_AUD_CHAN_TYPE_3_1_LRS:
782 case HDMI_AUD_CHAN_TYPE_4_0_CLRS:
783 return 5;
784 case HDMI_AUD_CHAN_TYPE_5_1:
785 case HDMI_AUD_CHAN_TYPE_6_0:
786 case HDMI_AUD_CHAN_TYPE_4_1_CLRS:
787 case HDMI_AUD_CHAN_TYPE_6_0_CS:
788 case HDMI_AUD_CHAN_TYPE_6_0_CH:
789 case HDMI_AUD_CHAN_TYPE_6_0_OH:
790 case HDMI_AUD_CHAN_TYPE_6_0_CHR:
791 return 6;
792 case HDMI_AUD_CHAN_TYPE_6_1:
793 case HDMI_AUD_CHAN_TYPE_6_1_CS:
794 case HDMI_AUD_CHAN_TYPE_6_1_CH:
795 case HDMI_AUD_CHAN_TYPE_6_1_OH:
796 case HDMI_AUD_CHAN_TYPE_6_1_CHR:
797 case HDMI_AUD_CHAN_TYPE_7_0:
798 case HDMI_AUD_CHAN_TYPE_7_0_LH_RH:
799 case HDMI_AUD_CHAN_TYPE_7_0_LSR_RSR:
800 case HDMI_AUD_CHAN_TYPE_7_0_LC_RC:
801 case HDMI_AUD_CHAN_TYPE_7_0_LW_RW:
802 case HDMI_AUD_CHAN_TYPE_7_0_LSD_RSD:
803 case HDMI_AUD_CHAN_TYPE_7_0_LSS_RSS:
804 case HDMI_AUD_CHAN_TYPE_7_0_LHS_RHS:
805 case HDMI_AUD_CHAN_TYPE_7_0_CS_CH:
806 case HDMI_AUD_CHAN_TYPE_7_0_CS_OH:
807 case HDMI_AUD_CHAN_TYPE_7_0_CS_CHR:
808 case HDMI_AUD_CHAN_TYPE_7_0_CH_OH:
809 case HDMI_AUD_CHAN_TYPE_7_0_CH_CHR:
810 case HDMI_AUD_CHAN_TYPE_7_0_OH_CHR:
811 case HDMI_AUD_CHAN_TYPE_7_0_LSS_RSS_LSR_RSR:
812 case HDMI_AUD_CHAN_TYPE_8_0_LH_RH_CS:
813 return 7;
814 case HDMI_AUD_CHAN_TYPE_7_1:
815 case HDMI_AUD_CHAN_TYPE_7_1_LH_RH:
816 case HDMI_AUD_CHAN_TYPE_7_1_LSR_RSR:
817 case HDMI_AUD_CHAN_TYPE_7_1_LC_RC:
818 case HDMI_AUD_CHAN_TYPE_7_1_LW_RW:
819 case HDMI_AUD_CHAN_TYPE_7_1_LSD_RSD:
820 case HDMI_AUD_CHAN_TYPE_7_1_LSS_RSS:
821 case HDMI_AUD_CHAN_TYPE_7_1_LHS_RHS:
822 case HDMI_AUD_CHAN_TYPE_7_1_CS_CH:
823 case HDMI_AUD_CHAN_TYPE_7_1_CS_OH:
824 case HDMI_AUD_CHAN_TYPE_7_1_CS_CHR:
825 case HDMI_AUD_CHAN_TYPE_7_1_CH_OH:
826 case HDMI_AUD_CHAN_TYPE_7_1_CH_CHR:
827 case HDMI_AUD_CHAN_TYPE_7_1_OH_CHR:
828 case HDMI_AUD_CHAN_TYPE_7_1_LSS_RSS_LSR_RSR:
829 return 8;
830 default:
831 return 2;
832 }
833 }
834
835 static int mtk_hdmi_video_change_vpll(struct mtk_hdmi *hdmi, u32 clock)
836 {
837 unsigned long rate;
838 int ret;
839
840 /* The DPI driver already should have set TVDPLL to the correct rate */
841 ret = clk_set_rate(hdmi->clk[MTK_HDMI_CLK_HDMI_PLL], clock);
842 if (ret) {
843 dev_err(hdmi->dev, "Failed to set PLL to %u Hz: %d\n", clock,
844 ret);
845 return ret;
846 }
847
848 rate = clk_get_rate(hdmi->clk[MTK_HDMI_CLK_HDMI_PLL]);
849
850 if (DIV_ROUND_CLOSEST(rate, 1000) != DIV_ROUND_CLOSEST(clock, 1000))
851 dev_warn(hdmi->dev, "Want PLL %u Hz, got %lu Hz\n", clock,
852 rate);
853 else
854 dev_dbg(hdmi->dev, "Want PLL %u Hz, got %lu Hz\n", clock, rate);
855
856 mtk_hdmi_hw_config_sys(hdmi);
857 mtk_hdmi_hw_set_deep_color_mode(hdmi);
858 return 0;
859 }
860
861 static void mtk_hdmi_video_set_display_mode(struct mtk_hdmi *hdmi,
862 struct drm_display_mode *mode)
863 {
864 mtk_hdmi_hw_reset(hdmi);
865 mtk_hdmi_hw_enable_notice(hdmi, true);
866 mtk_hdmi_hw_write_int_mask(hdmi, 0xff);
867 mtk_hdmi_hw_enable_dvi_mode(hdmi, hdmi->dvi_mode);
868 mtk_hdmi_hw_ncts_auto_write_enable(hdmi, true);
869
870 mtk_hdmi_hw_msic_setting(hdmi, mode);
871 }
872
873 static int mtk_hdmi_aud_enable_packet(struct mtk_hdmi *hdmi, bool enable)
874 {
875 mtk_hdmi_hw_send_aud_packet(hdmi, enable);
876 return 0;
877 }
878
879 static int mtk_hdmi_aud_on_off_hw_ncts(struct mtk_hdmi *hdmi, bool on)
880 {
881 mtk_hdmi_hw_ncts_enable(hdmi, on);
882 return 0;
883 }
884
885 static int mtk_hdmi_aud_set_input(struct mtk_hdmi *hdmi)
886 {
887 enum hdmi_aud_channel_type chan_type;
888 u8 chan_count;
889 bool dst;
890
891 mtk_hdmi_hw_aud_set_channel_swap(hdmi, HDMI_AUD_SWAP_LFE_CC);
892 mtk_hdmi_set_bits(hdmi, GRL_MIX_CTRL, MIX_CTRL_FLAT);
893
894 if (hdmi->aud_param.aud_input_type == HDMI_AUD_INPUT_SPDIF &&
895 hdmi->aud_param.aud_codec == HDMI_AUDIO_CODING_TYPE_DST) {
896 mtk_hdmi_hw_aud_set_bit_num(hdmi, HDMI_AUDIO_SAMPLE_SIZE_24);
897 } else if (hdmi->aud_param.aud_i2s_fmt == HDMI_I2S_MODE_LJT_24BIT) {
898 hdmi->aud_param.aud_i2s_fmt = HDMI_I2S_MODE_LJT_16BIT;
899 }
900
901 mtk_hdmi_hw_aud_set_i2s_fmt(hdmi, hdmi->aud_param.aud_i2s_fmt);
902 mtk_hdmi_hw_aud_set_bit_num(hdmi, HDMI_AUDIO_SAMPLE_SIZE_24);
903
904 dst = ((hdmi->aud_param.aud_input_type == HDMI_AUD_INPUT_SPDIF) &&
905 (hdmi->aud_param.aud_codec == HDMI_AUDIO_CODING_TYPE_DST));
906 mtk_hdmi_hw_audio_config(hdmi, dst);
907
908 if (hdmi->aud_param.aud_input_type == HDMI_AUD_INPUT_SPDIF)
909 chan_type = HDMI_AUD_CHAN_TYPE_2_0;
910 else
911 chan_type = hdmi->aud_param.aud_input_chan_type;
912 chan_count = mtk_hdmi_aud_get_chnl_count(chan_type);
913 mtk_hdmi_hw_aud_set_i2s_chan_num(hdmi, chan_type, chan_count);
914 mtk_hdmi_hw_aud_set_input_type(hdmi, hdmi->aud_param.aud_input_type);
915
916 return 0;
917 }
918
919 static int mtk_hdmi_aud_set_src(struct mtk_hdmi *hdmi,
920 struct drm_display_mode *display_mode)
921 {
922 unsigned int sample_rate = hdmi->aud_param.codec_params.sample_rate;
923
924 mtk_hdmi_aud_on_off_hw_ncts(hdmi, false);
925 mtk_hdmi_hw_aud_src_disable(hdmi);
926 mtk_hdmi_clear_bits(hdmi, GRL_CFG2, CFG2_ACLK_INV);
927
928 if (hdmi->aud_param.aud_input_type == HDMI_AUD_INPUT_I2S) {
929 switch (sample_rate) {
930 case 32000:
931 case 44100:
932 case 48000:
933 case 88200:
934 case 96000:
935 break;
936 default:
937 return -EINVAL;
938 }
939 mtk_hdmi_hw_aud_set_mclk(hdmi, hdmi->aud_param.aud_mclk);
940 } else {
941 switch (sample_rate) {
942 case 32000:
943 case 44100:
944 case 48000:
945 break;
946 default:
947 return -EINVAL;
948 }
949 mtk_hdmi_hw_aud_set_mclk(hdmi, HDMI_AUD_MCLK_128FS);
950 }
951
952 mtk_hdmi_hw_aud_set_ncts(hdmi, sample_rate, display_mode->clock);
953
954 mtk_hdmi_hw_aud_src_reenable(hdmi);
955 return 0;
956 }
957
958 static int mtk_hdmi_aud_output_config(struct mtk_hdmi *hdmi,
959 struct drm_display_mode *display_mode)
960 {
961 mtk_hdmi_hw_aud_mute(hdmi);
962 mtk_hdmi_aud_enable_packet(hdmi, false);
963
964 mtk_hdmi_aud_set_input(hdmi);
965 mtk_hdmi_aud_set_src(hdmi, display_mode);
966 mtk_hdmi_hw_aud_set_channel_status(hdmi,
967 hdmi->aud_param.codec_params.iec.status);
968
969 usleep_range(50, 100);
970
971 mtk_hdmi_aud_on_off_hw_ncts(hdmi, true);
972 mtk_hdmi_aud_enable_packet(hdmi, true);
973 mtk_hdmi_hw_aud_unmute(hdmi);
974 return 0;
975 }
976
977 static int mtk_hdmi_setup_avi_infoframe(struct mtk_hdmi *hdmi,
978 struct drm_display_mode *mode)
979 {
980 struct hdmi_avi_infoframe frame;
981 u8 buffer[17];
982 ssize_t err;
983
984 err = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode, false);
985 if (err < 0) {
986 dev_err(hdmi->dev,
987 "Failed to get AVI infoframe from mode: %zd\n", err);
988 return err;
989 }
990
991 err = hdmi_avi_infoframe_pack(&frame, buffer, sizeof(buffer));
992 if (err < 0) {
993 dev_err(hdmi->dev, "Failed to pack AVI infoframe: %zd\n", err);
994 return err;
995 }
996
997 mtk_hdmi_hw_send_info_frame(hdmi, buffer, sizeof(buffer));
998 return 0;
999 }
1000
1001 static int mtk_hdmi_setup_spd_infoframe(struct mtk_hdmi *hdmi,
1002 const char *vendor,
1003 const char *product)
1004 {
1005 struct hdmi_spd_infoframe frame;
1006 u8 buffer[29];
1007 ssize_t err;
1008
1009 err = hdmi_spd_infoframe_init(&frame, vendor, product);
1010 if (err < 0) {
1011 dev_err(hdmi->dev, "Failed to initialize SPD infoframe: %zd\n",
1012 err);
1013 return err;
1014 }
1015
1016 err = hdmi_spd_infoframe_pack(&frame, buffer, sizeof(buffer));
1017 if (err < 0) {
1018 dev_err(hdmi->dev, "Failed to pack SDP infoframe: %zd\n", err);
1019 return err;
1020 }
1021
1022 mtk_hdmi_hw_send_info_frame(hdmi, buffer, sizeof(buffer));
1023 return 0;
1024 }
1025
1026 static int mtk_hdmi_setup_audio_infoframe(struct mtk_hdmi *hdmi)
1027 {
1028 struct hdmi_audio_infoframe frame;
1029 u8 buffer[14];
1030 ssize_t err;
1031
1032 err = hdmi_audio_infoframe_init(&frame);
1033 if (err < 0) {
1034 dev_err(hdmi->dev, "Failed to setup audio infoframe: %zd\n",
1035 err);
1036 return err;
1037 }
1038
1039 frame.coding_type = HDMI_AUDIO_CODING_TYPE_STREAM;
1040 frame.sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM;
1041 frame.sample_size = HDMI_AUDIO_SAMPLE_SIZE_STREAM;
1042 frame.channels = mtk_hdmi_aud_get_chnl_count(
1043 hdmi->aud_param.aud_input_chan_type);
1044
1045 err = hdmi_audio_infoframe_pack(&frame, buffer, sizeof(buffer));
1046 if (err < 0) {
1047 dev_err(hdmi->dev, "Failed to pack audio infoframe: %zd\n",
1048 err);
1049 return err;
1050 }
1051
1052 mtk_hdmi_hw_send_info_frame(hdmi, buffer, sizeof(buffer));
1053 return 0;
1054 }
1055
1056 static int mtk_hdmi_setup_vendor_specific_infoframe(struct mtk_hdmi *hdmi,
1057 struct drm_display_mode *mode)
1058 {
1059 struct hdmi_vendor_infoframe frame;
1060 u8 buffer[10];
1061 ssize_t err;
1062
1063 err = drm_hdmi_vendor_infoframe_from_display_mode(&frame,
1064 &hdmi->conn, mode);
1065 if (err) {
1066 dev_err(hdmi->dev,
1067 "Failed to get vendor infoframe from mode: %zd\n", err);
1068 return err;
1069 }
1070
1071 err = hdmi_vendor_infoframe_pack(&frame, buffer, sizeof(buffer));
1072 if (err < 0) {
1073 dev_err(hdmi->dev, "Failed to pack vendor infoframe: %zd\n",
1074 err);
1075 return err;
1076 }
1077
1078 mtk_hdmi_hw_send_info_frame(hdmi, buffer, sizeof(buffer));
1079 return 0;
1080 }
1081
1082 static int mtk_hdmi_output_init(struct mtk_hdmi *hdmi)
1083 {
1084 struct hdmi_audio_param *aud_param = &hdmi->aud_param;
1085
1086 hdmi->csp = HDMI_COLORSPACE_RGB;
1087 aud_param->aud_codec = HDMI_AUDIO_CODING_TYPE_PCM;
1088 aud_param->aud_sampe_size = HDMI_AUDIO_SAMPLE_SIZE_16;
1089 aud_param->aud_input_type = HDMI_AUD_INPUT_I2S;
1090 aud_param->aud_i2s_fmt = HDMI_I2S_MODE_I2S_24BIT;
1091 aud_param->aud_mclk = HDMI_AUD_MCLK_128FS;
1092 aud_param->aud_input_chan_type = HDMI_AUD_CHAN_TYPE_2_0;
1093
1094 return 0;
1095 }
1096
1097 static void mtk_hdmi_audio_enable(struct mtk_hdmi *hdmi)
1098 {
1099 mtk_hdmi_aud_enable_packet(hdmi, true);
1100 hdmi->audio_enable = true;
1101 }
1102
1103 static void mtk_hdmi_audio_disable(struct mtk_hdmi *hdmi)
1104 {
1105 mtk_hdmi_aud_enable_packet(hdmi, false);
1106 hdmi->audio_enable = false;
1107 }
1108
1109 static int mtk_hdmi_audio_set_param(struct mtk_hdmi *hdmi,
1110 struct hdmi_audio_param *param)
1111 {
1112 if (!hdmi->audio_enable) {
1113 dev_err(hdmi->dev, "hdmi audio is in disable state!\n");
1114 return -EINVAL;
1115 }
1116 dev_dbg(hdmi->dev, "codec:%d, input:%d, channel:%d, fs:%d\n",
1117 param->aud_codec, param->aud_input_type,
1118 param->aud_input_chan_type, param->codec_params.sample_rate);
1119 memcpy(&hdmi->aud_param, param, sizeof(*param));
1120 return mtk_hdmi_aud_output_config(hdmi, &hdmi->mode);
1121 }
1122
1123 static int mtk_hdmi_output_set_display_mode(struct mtk_hdmi *hdmi,
1124 struct drm_display_mode *mode)
1125 {
1126 int ret;
1127
1128 mtk_hdmi_hw_vid_black(hdmi, true);
1129 mtk_hdmi_hw_aud_mute(hdmi);
1130 mtk_hdmi_hw_send_av_mute(hdmi);
1131 phy_power_off(hdmi->phy);
1132
1133 ret = mtk_hdmi_video_change_vpll(hdmi,
1134 mode->clock * 1000);
1135 if (ret) {
1136 dev_err(hdmi->dev, "Failed to set vpll: %d\n", ret);
1137 return ret;
1138 }
1139 mtk_hdmi_video_set_display_mode(hdmi, mode);
1140
1141 phy_power_on(hdmi->phy);
1142 mtk_hdmi_aud_output_config(hdmi, mode);
1143
1144 mtk_hdmi_hw_vid_black(hdmi, false);
1145 mtk_hdmi_hw_aud_unmute(hdmi);
1146 mtk_hdmi_hw_send_av_unmute(hdmi);
1147
1148 return 0;
1149 }
1150
1151 static const char * const mtk_hdmi_clk_names[MTK_HDMI_CLK_COUNT] = {
1152 [MTK_HDMI_CLK_HDMI_PIXEL] = "pixel",
1153 [MTK_HDMI_CLK_HDMI_PLL] = "pll",
1154 [MTK_HDMI_CLK_AUD_BCLK] = "bclk",
1155 [MTK_HDMI_CLK_AUD_SPDIF] = "spdif",
1156 };
1157
1158 static int mtk_hdmi_get_all_clk(struct mtk_hdmi *hdmi,
1159 struct device_node *np)
1160 {
1161 int i;
1162
1163 for (i = 0; i < ARRAY_SIZE(mtk_hdmi_clk_names); i++) {
1164 hdmi->clk[i] = of_clk_get_by_name(np,
1165 mtk_hdmi_clk_names[i]);
1166 if (IS_ERR(hdmi->clk[i]))
1167 return PTR_ERR(hdmi->clk[i]);
1168 }
1169 return 0;
1170 }
1171
1172 static int mtk_hdmi_clk_enable_audio(struct mtk_hdmi *hdmi)
1173 {
1174 int ret;
1175
1176 ret = clk_prepare_enable(hdmi->clk[MTK_HDMI_CLK_AUD_BCLK]);
1177 if (ret)
1178 return ret;
1179
1180 ret = clk_prepare_enable(hdmi->clk[MTK_HDMI_CLK_AUD_SPDIF]);
1181 if (ret)
1182 goto err;
1183
1184 return 0;
1185 err:
1186 clk_disable_unprepare(hdmi->clk[MTK_HDMI_CLK_AUD_BCLK]);
1187 return ret;
1188 }
1189
1190 static void mtk_hdmi_clk_disable_audio(struct mtk_hdmi *hdmi)
1191 {
1192 clk_disable_unprepare(hdmi->clk[MTK_HDMI_CLK_AUD_BCLK]);
1193 clk_disable_unprepare(hdmi->clk[MTK_HDMI_CLK_AUD_SPDIF]);
1194 }
1195
1196 static enum drm_connector_status hdmi_conn_detect(struct drm_connector *conn,
1197 bool force)
1198 {
1199 struct mtk_hdmi *hdmi = hdmi_ctx_from_conn(conn);
1200
1201 return mtk_cec_hpd_high(hdmi->cec_dev) ?
1202 connector_status_connected : connector_status_disconnected;
1203 }
1204
1205 static void hdmi_conn_destroy(struct drm_connector *conn)
1206 {
1207 struct mtk_hdmi *hdmi = hdmi_ctx_from_conn(conn);
1208
1209 mtk_cec_set_hpd_event(hdmi->cec_dev, NULL, NULL);
1210
1211 drm_connector_cleanup(conn);
1212 }
1213
1214 static int mtk_hdmi_conn_get_modes(struct drm_connector *conn)
1215 {
1216 struct mtk_hdmi *hdmi = hdmi_ctx_from_conn(conn);
1217 struct edid *edid;
1218 int ret;
1219
1220 if (!hdmi->ddc_adpt)
1221 return -ENODEV;
1222
1223 edid = drm_get_edid(conn, hdmi->ddc_adpt);
1224 if (!edid)
1225 return -ENODEV;
1226
1227 hdmi->dvi_mode = !drm_detect_monitor_audio(edid);
1228
1229 drm_connector_update_edid_property(conn, edid);
1230
1231 ret = drm_add_edid_modes(conn, edid);
1232 kfree(edid);
1233 return ret;
1234 }
1235
1236 static int mtk_hdmi_conn_mode_valid(struct drm_connector *conn,
1237 struct drm_display_mode *mode)
1238 {
1239 struct mtk_hdmi *hdmi = hdmi_ctx_from_conn(conn);
1240
1241 dev_dbg(hdmi->dev, "xres=%d, yres=%d, refresh=%d, intl=%d clock=%d\n",
1242 mode->hdisplay, mode->vdisplay, mode->vrefresh,
1243 !!(mode->flags & DRM_MODE_FLAG_INTERLACE), mode->clock * 1000);
1244
1245 if (hdmi->bridge.next) {
1246 struct drm_display_mode adjusted_mode;
1247
1248 drm_mode_copy(&adjusted_mode, mode);
1249 if (!drm_bridge_mode_fixup(hdmi->bridge.next, mode,
1250 &adjusted_mode))
1251 return MODE_BAD;
1252 }
1253
1254 if (mode->clock < 27000)
1255 return MODE_CLOCK_LOW;
1256 if (mode->clock > 297000)
1257 return MODE_CLOCK_HIGH;
1258
1259 return drm_mode_validate_size(mode, 0x1fff, 0x1fff);
1260 }
1261
1262 static struct drm_encoder *mtk_hdmi_conn_best_enc(struct drm_connector *conn)
1263 {
1264 struct mtk_hdmi *hdmi = hdmi_ctx_from_conn(conn);
1265
1266 return hdmi->bridge.encoder;
1267 }
1268
1269 static const struct drm_connector_funcs mtk_hdmi_connector_funcs = {
1270 .detect = hdmi_conn_detect,
1271 .fill_modes = drm_helper_probe_single_connector_modes,
1272 .destroy = hdmi_conn_destroy,
1273 .reset = drm_atomic_helper_connector_reset,
1274 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
1275 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
1276 };
1277
1278 static const struct drm_connector_helper_funcs
1279 mtk_hdmi_connector_helper_funcs = {
1280 .get_modes = mtk_hdmi_conn_get_modes,
1281 .mode_valid = mtk_hdmi_conn_mode_valid,
1282 .best_encoder = mtk_hdmi_conn_best_enc,
1283 };
1284
1285 static void mtk_hdmi_hpd_event(bool hpd, struct device *dev)
1286 {
1287 struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
1288
1289 if (hdmi && hdmi->bridge.encoder && hdmi->bridge.encoder->dev)
1290 drm_helper_hpd_irq_event(hdmi->bridge.encoder->dev);
1291 }
1292
1293 /*
1294 * Bridge callbacks
1295 */
1296
1297 static int mtk_hdmi_bridge_attach(struct drm_bridge *bridge)
1298 {
1299 struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
1300 int ret;
1301
1302 ret = drm_connector_init(bridge->encoder->dev, &hdmi->conn,
1303 &mtk_hdmi_connector_funcs,
1304 DRM_MODE_CONNECTOR_HDMIA);
1305 if (ret) {
1306 dev_err(hdmi->dev, "Failed to initialize connector: %d\n", ret);
1307 return ret;
1308 }
1309 drm_connector_helper_add(&hdmi->conn, &mtk_hdmi_connector_helper_funcs);
1310
1311 hdmi->conn.polled = DRM_CONNECTOR_POLL_HPD;
1312 hdmi->conn.interlace_allowed = true;
1313 hdmi->conn.doublescan_allowed = false;
1314
1315 ret = drm_connector_attach_encoder(&hdmi->conn,
1316 bridge->encoder);
1317 if (ret) {
1318 dev_err(hdmi->dev,
1319 "Failed to attach connector to encoder: %d\n", ret);
1320 return ret;
1321 }
1322
1323 if (hdmi->next_bridge) {
1324 ret = drm_bridge_attach(bridge->encoder, hdmi->next_bridge,
1325 bridge);
1326 if (ret) {
1327 dev_err(hdmi->dev,
1328 "Failed to attach external bridge: %d\n", ret);
1329 return ret;
1330 }
1331 }
1332
1333 mtk_cec_set_hpd_event(hdmi->cec_dev, mtk_hdmi_hpd_event, hdmi->dev);
1334
1335 return 0;
1336 }
1337
1338 static bool mtk_hdmi_bridge_mode_fixup(struct drm_bridge *bridge,
1339 const struct drm_display_mode *mode,
1340 struct drm_display_mode *adjusted_mode)
1341 {
1342 return true;
1343 }
1344
1345 static void mtk_hdmi_bridge_disable(struct drm_bridge *bridge)
1346 {
1347 struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
1348
1349 if (!hdmi->enabled)
1350 return;
1351
1352 phy_power_off(hdmi->phy);
1353 clk_disable_unprepare(hdmi->clk[MTK_HDMI_CLK_HDMI_PIXEL]);
1354 clk_disable_unprepare(hdmi->clk[MTK_HDMI_CLK_HDMI_PLL]);
1355
1356 hdmi->enabled = false;
1357 }
1358
1359 static void mtk_hdmi_bridge_post_disable(struct drm_bridge *bridge)
1360 {
1361 struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
1362
1363 if (!hdmi->powered)
1364 return;
1365
1366 mtk_hdmi_hw_1p4_version_enable(hdmi, true);
1367 mtk_hdmi_hw_make_reg_writable(hdmi, false);
1368
1369 hdmi->powered = false;
1370 }
1371
1372 static void mtk_hdmi_bridge_mode_set(struct drm_bridge *bridge,
1373 struct drm_display_mode *mode,
1374 struct drm_display_mode *adjusted_mode)
1375 {
1376 struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
1377
1378 dev_dbg(hdmi->dev, "cur info: name:%s, hdisplay:%d\n",
1379 adjusted_mode->name, adjusted_mode->hdisplay);
1380 dev_dbg(hdmi->dev, "hsync_start:%d,hsync_end:%d, htotal:%d",
1381 adjusted_mode->hsync_start, adjusted_mode->hsync_end,
1382 adjusted_mode->htotal);
1383 dev_dbg(hdmi->dev, "hskew:%d, vdisplay:%d\n",
1384 adjusted_mode->hskew, adjusted_mode->vdisplay);
1385 dev_dbg(hdmi->dev, "vsync_start:%d, vsync_end:%d, vtotal:%d",
1386 adjusted_mode->vsync_start, adjusted_mode->vsync_end,
1387 adjusted_mode->vtotal);
1388 dev_dbg(hdmi->dev, "vscan:%d, flag:%d\n",
1389 adjusted_mode->vscan, adjusted_mode->flags);
1390
1391 drm_mode_copy(&hdmi->mode, adjusted_mode);
1392 }
1393
1394 static void mtk_hdmi_bridge_pre_enable(struct drm_bridge *bridge)
1395 {
1396 struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
1397
1398 mtk_hdmi_hw_make_reg_writable(hdmi, true);
1399 mtk_hdmi_hw_1p4_version_enable(hdmi, true);
1400
1401 hdmi->powered = true;
1402 }
1403
1404 static void mtk_hdmi_send_infoframe(struct mtk_hdmi *hdmi,
1405 struct drm_display_mode *mode)
1406 {
1407 mtk_hdmi_setup_audio_infoframe(hdmi);
1408 mtk_hdmi_setup_avi_infoframe(hdmi, mode);
1409 mtk_hdmi_setup_spd_infoframe(hdmi, "mediatek", "On-chip HDMI");
1410 if (mode->flags & DRM_MODE_FLAG_3D_MASK)
1411 mtk_hdmi_setup_vendor_specific_infoframe(hdmi, mode);
1412 }
1413
1414 static void mtk_hdmi_bridge_enable(struct drm_bridge *bridge)
1415 {
1416 struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
1417
1418 mtk_hdmi_output_set_display_mode(hdmi, &hdmi->mode);
1419 clk_prepare_enable(hdmi->clk[MTK_HDMI_CLK_HDMI_PLL]);
1420 clk_prepare_enable(hdmi->clk[MTK_HDMI_CLK_HDMI_PIXEL]);
1421 phy_power_on(hdmi->phy);
1422 mtk_hdmi_send_infoframe(hdmi, &hdmi->mode);
1423
1424 hdmi->enabled = true;
1425 }
1426
1427 static const struct drm_bridge_funcs mtk_hdmi_bridge_funcs = {
1428 .attach = mtk_hdmi_bridge_attach,
1429 .mode_fixup = mtk_hdmi_bridge_mode_fixup,
1430 .disable = mtk_hdmi_bridge_disable,
1431 .post_disable = mtk_hdmi_bridge_post_disable,
1432 .mode_set = mtk_hdmi_bridge_mode_set,
1433 .pre_enable = mtk_hdmi_bridge_pre_enable,
1434 .enable = mtk_hdmi_bridge_enable,
1435 };
1436
1437 static int mtk_hdmi_dt_parse_pdata(struct mtk_hdmi *hdmi,
1438 struct platform_device *pdev)
1439 {
1440 struct device *dev = &pdev->dev;
1441 struct device_node *np = dev->of_node;
1442 struct device_node *cec_np, *remote, *i2c_np;
1443 struct platform_device *cec_pdev;
1444 struct regmap *regmap;
1445 struct resource *mem;
1446 int ret;
1447
1448 ret = mtk_hdmi_get_all_clk(hdmi, np);
1449 if (ret) {
1450 dev_err(dev, "Failed to get clocks: %d\n", ret);
1451 return ret;
1452 }
1453
1454 /* The CEC module handles HDMI hotplug detection */
1455 cec_np = of_get_compatible_child(np->parent, "mediatek,mt8173-cec");
1456 if (!cec_np) {
1457 dev_err(dev, "Failed to find CEC node\n");
1458 return -EINVAL;
1459 }
1460
1461 cec_pdev = of_find_device_by_node(cec_np);
1462 if (!cec_pdev) {
1463 dev_err(hdmi->dev, "Waiting for CEC device %pOF\n",
1464 cec_np);
1465 of_node_put(cec_np);
1466 return -EPROBE_DEFER;
1467 }
1468 of_node_put(cec_np);
1469 hdmi->cec_dev = &cec_pdev->dev;
1470
1471 /*
1472 * The mediatek,syscon-hdmi property contains a phandle link to the
1473 * MMSYS_CONFIG device and the register offset of the HDMI_SYS_CFG
1474 * registers it contains.
1475 */
1476 regmap = syscon_regmap_lookup_by_phandle(np, "mediatek,syscon-hdmi");
1477 ret = of_property_read_u32_index(np, "mediatek,syscon-hdmi", 1,
1478 &hdmi->sys_offset);
1479 if (IS_ERR(regmap))
1480 ret = PTR_ERR(regmap);
1481 if (ret) {
1482 ret = PTR_ERR(regmap);
1483 dev_err(dev,
1484 "Failed to get system configuration registers: %d\n",
1485 ret);
1486 return ret;
1487 }
1488 hdmi->sys_regmap = regmap;
1489
1490 mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1491 hdmi->regs = devm_ioremap_resource(dev, mem);
1492 if (IS_ERR(hdmi->regs))
1493 return PTR_ERR(hdmi->regs);
1494
1495 remote = of_graph_get_remote_node(np, 1, 0);
1496 if (!remote)
1497 return -EINVAL;
1498
1499 if (!of_device_is_compatible(remote, "hdmi-connector")) {
1500 hdmi->next_bridge = of_drm_find_bridge(remote);
1501 if (!hdmi->next_bridge) {
1502 dev_err(dev, "Waiting for external bridge\n");
1503 of_node_put(remote);
1504 return -EPROBE_DEFER;
1505 }
1506 }
1507
1508 i2c_np = of_parse_phandle(remote, "ddc-i2c-bus", 0);
1509 if (!i2c_np) {
1510 dev_err(dev, "Failed to find ddc-i2c-bus node in %pOF\n",
1511 remote);
1512 of_node_put(remote);
1513 return -EINVAL;
1514 }
1515 of_node_put(remote);
1516
1517 hdmi->ddc_adpt = of_find_i2c_adapter_by_node(i2c_np);
1518 if (!hdmi->ddc_adpt) {
1519 dev_err(dev, "Failed to get ddc i2c adapter by node\n");
1520 return -EINVAL;
1521 }
1522
1523 return 0;
1524 }
1525
1526 /*
1527 * HDMI audio codec callbacks
1528 */
1529
1530 static int mtk_hdmi_audio_hw_params(struct device *dev, void *data,
1531 struct hdmi_codec_daifmt *daifmt,
1532 struct hdmi_codec_params *params)
1533 {
1534 struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
1535 struct hdmi_audio_param hdmi_params;
1536 unsigned int chan = params->cea.channels;
1537
1538 dev_dbg(hdmi->dev, "%s: %u Hz, %d bit, %d channels\n", __func__,
1539 params->sample_rate, params->sample_width, chan);
1540
1541 if (!hdmi->bridge.encoder)
1542 return -ENODEV;
1543
1544 switch (chan) {
1545 case 2:
1546 hdmi_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_2_0;
1547 break;
1548 case 4:
1549 hdmi_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_4_0;
1550 break;
1551 case 6:
1552 hdmi_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_5_1;
1553 break;
1554 case 8:
1555 hdmi_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_7_1;
1556 break;
1557 default:
1558 dev_err(hdmi->dev, "channel[%d] not supported!\n", chan);
1559 return -EINVAL;
1560 }
1561
1562 switch (params->sample_rate) {
1563 case 32000:
1564 case 44100:
1565 case 48000:
1566 case 88200:
1567 case 96000:
1568 case 176400:
1569 case 192000:
1570 break;
1571 default:
1572 dev_err(hdmi->dev, "rate[%d] not supported!\n",
1573 params->sample_rate);
1574 return -EINVAL;
1575 }
1576
1577 switch (daifmt->fmt) {
1578 case HDMI_I2S:
1579 hdmi_params.aud_codec = HDMI_AUDIO_CODING_TYPE_PCM;
1580 hdmi_params.aud_sampe_size = HDMI_AUDIO_SAMPLE_SIZE_16;
1581 hdmi_params.aud_input_type = HDMI_AUD_INPUT_I2S;
1582 hdmi_params.aud_i2s_fmt = HDMI_I2S_MODE_I2S_24BIT;
1583 hdmi_params.aud_mclk = HDMI_AUD_MCLK_128FS;
1584 break;
1585 case HDMI_SPDIF:
1586 hdmi_params.aud_codec = HDMI_AUDIO_CODING_TYPE_PCM;
1587 hdmi_params.aud_sampe_size = HDMI_AUDIO_SAMPLE_SIZE_16;
1588 hdmi_params.aud_input_type = HDMI_AUD_INPUT_SPDIF;
1589 break;
1590 default:
1591 dev_err(hdmi->dev, "%s: Invalid DAI format %d\n", __func__,
1592 daifmt->fmt);
1593 return -EINVAL;
1594 }
1595
1596 memcpy(&hdmi_params.codec_params, params,
1597 sizeof(hdmi_params.codec_params));
1598
1599 mtk_hdmi_audio_set_param(hdmi, &hdmi_params);
1600
1601 return 0;
1602 }
1603
1604 static int mtk_hdmi_audio_startup(struct device *dev, void *data)
1605 {
1606 struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
1607
1608 dev_dbg(dev, "%s\n", __func__);
1609
1610 mtk_hdmi_audio_enable(hdmi);
1611
1612 return 0;
1613 }
1614
1615 static void mtk_hdmi_audio_shutdown(struct device *dev, void *data)
1616 {
1617 struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
1618
1619 dev_dbg(dev, "%s\n", __func__);
1620
1621 mtk_hdmi_audio_disable(hdmi);
1622 }
1623
1624 static int
1625 mtk_hdmi_audio_digital_mute(struct device *dev, void *data, bool enable)
1626 {
1627 struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
1628
1629 dev_dbg(dev, "%s(%d)\n", __func__, enable);
1630
1631 if (enable)
1632 mtk_hdmi_hw_aud_mute(hdmi);
1633 else
1634 mtk_hdmi_hw_aud_unmute(hdmi);
1635
1636 return 0;
1637 }
1638
1639 static int mtk_hdmi_audio_get_eld(struct device *dev, void *data, uint8_t *buf, size_t len)
1640 {
1641 struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
1642
1643 dev_dbg(dev, "%s\n", __func__);
1644
1645 memcpy(buf, hdmi->conn.eld, min(sizeof(hdmi->conn.eld), len));
1646
1647 return 0;
1648 }
1649
1650 static const struct hdmi_codec_ops mtk_hdmi_audio_codec_ops = {
1651 .hw_params = mtk_hdmi_audio_hw_params,
1652 .audio_startup = mtk_hdmi_audio_startup,
1653 .audio_shutdown = mtk_hdmi_audio_shutdown,
1654 .digital_mute = mtk_hdmi_audio_digital_mute,
1655 .get_eld = mtk_hdmi_audio_get_eld,
1656 };
1657
1658 static void mtk_hdmi_register_audio_driver(struct device *dev)
1659 {
1660 struct hdmi_codec_pdata codec_data = {
1661 .ops = &mtk_hdmi_audio_codec_ops,
1662 .max_i2s_channels = 2,
1663 .i2s = 1,
1664 };
1665 struct platform_device *pdev;
1666
1667 pdev = platform_device_register_data(dev, HDMI_CODEC_DRV_NAME,
1668 PLATFORM_DEVID_AUTO, &codec_data,
1669 sizeof(codec_data));
1670 if (IS_ERR(pdev))
1671 return;
1672
1673 DRM_INFO("%s driver bound to HDMI\n", HDMI_CODEC_DRV_NAME);
1674 }
1675
1676 static int mtk_drm_hdmi_probe(struct platform_device *pdev)
1677 {
1678 struct mtk_hdmi *hdmi;
1679 struct device *dev = &pdev->dev;
1680 int ret;
1681
1682 hdmi = devm_kzalloc(dev, sizeof(*hdmi), GFP_KERNEL);
1683 if (!hdmi)
1684 return -ENOMEM;
1685
1686 hdmi->dev = dev;
1687
1688 ret = mtk_hdmi_dt_parse_pdata(hdmi, pdev);
1689 if (ret)
1690 return ret;
1691
1692 hdmi->phy = devm_phy_get(dev, "hdmi");
1693 if (IS_ERR(hdmi->phy)) {
1694 ret = PTR_ERR(hdmi->phy);
1695 dev_err(dev, "Failed to get HDMI PHY: %d\n", ret);
1696 return ret;
1697 }
1698
1699 platform_set_drvdata(pdev, hdmi);
1700
1701 ret = mtk_hdmi_output_init(hdmi);
1702 if (ret) {
1703 dev_err(dev, "Failed to initialize hdmi output\n");
1704 return ret;
1705 }
1706
1707 mtk_hdmi_register_audio_driver(dev);
1708
1709 hdmi->bridge.funcs = &mtk_hdmi_bridge_funcs;
1710 hdmi->bridge.of_node = pdev->dev.of_node;
1711 drm_bridge_add(&hdmi->bridge);
1712
1713 ret = mtk_hdmi_clk_enable_audio(hdmi);
1714 if (ret) {
1715 dev_err(dev, "Failed to enable audio clocks: %d\n", ret);
1716 goto err_bridge_remove;
1717 }
1718
1719 dev_dbg(dev, "mediatek hdmi probe success\n");
1720 return 0;
1721
1722 err_bridge_remove:
1723 drm_bridge_remove(&hdmi->bridge);
1724 return ret;
1725 }
1726
1727 static int mtk_drm_hdmi_remove(struct platform_device *pdev)
1728 {
1729 struct mtk_hdmi *hdmi = platform_get_drvdata(pdev);
1730
1731 drm_bridge_remove(&hdmi->bridge);
1732 mtk_hdmi_clk_disable_audio(hdmi);
1733 return 0;
1734 }
1735
1736 #ifdef CONFIG_PM_SLEEP
1737 static int mtk_hdmi_suspend(struct device *dev)
1738 {
1739 struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
1740
1741 mtk_hdmi_clk_disable_audio(hdmi);
1742 dev_dbg(dev, "hdmi suspend success!\n");
1743 return 0;
1744 }
1745
1746 static int mtk_hdmi_resume(struct device *dev)
1747 {
1748 struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
1749 int ret = 0;
1750
1751 ret = mtk_hdmi_clk_enable_audio(hdmi);
1752 if (ret) {
1753 dev_err(dev, "hdmi resume failed!\n");
1754 return ret;
1755 }
1756
1757 dev_dbg(dev, "hdmi resume success!\n");
1758 return 0;
1759 }
1760 #endif
1761 static SIMPLE_DEV_PM_OPS(mtk_hdmi_pm_ops,
1762 mtk_hdmi_suspend, mtk_hdmi_resume);
1763
1764 static const struct of_device_id mtk_drm_hdmi_of_ids[] = {
1765 { .compatible = "mediatek,mt8173-hdmi", },
1766 {}
1767 };
1768
1769 static struct platform_driver mtk_hdmi_driver = {
1770 .probe = mtk_drm_hdmi_probe,
1771 .remove = mtk_drm_hdmi_remove,
1772 .driver = {
1773 .name = "mediatek-drm-hdmi",
1774 .of_match_table = mtk_drm_hdmi_of_ids,
1775 .pm = &mtk_hdmi_pm_ops,
1776 },
1777 };
1778
1779 static struct platform_driver * const mtk_hdmi_drivers[] = {
1780 &mtk_hdmi_phy_driver,
1781 &mtk_hdmi_ddc_driver,
1782 &mtk_cec_driver,
1783 &mtk_hdmi_driver,
1784 };
1785
1786 static int __init mtk_hdmitx_init(void)
1787 {
1788 return platform_register_drivers(mtk_hdmi_drivers,
1789 ARRAY_SIZE(mtk_hdmi_drivers));
1790 }
1791
1792 static void __exit mtk_hdmitx_exit(void)
1793 {
1794 platform_unregister_drivers(mtk_hdmi_drivers,
1795 ARRAY_SIZE(mtk_hdmi_drivers));
1796 }
1797
1798 module_init(mtk_hdmitx_init);
1799 module_exit(mtk_hdmitx_exit);
1800
1801 MODULE_AUTHOR("Jie Qiu <jie.qiu@mediatek.com>");
1802 MODULE_DESCRIPTION("MediaTek HDMI Driver");
1803 MODULE_LICENSE("GPL v2");
Mirror https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git