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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (c) 2014 MediaTek Inc.
4 * Author: Jie Qiu <jie.qiu@mediatek.com>
5 */
6
7#include <linux/arm-smccc.h>
8#include <linux/clk.h>
9#include <linux/delay.h>
10#include <linux/hdmi.h>
11#include <linux/i2c.h>
12#include <linux/io.h>
13#include <linux/kernel.h>
14#include <linux/mfd/syscon.h>
15#include <linux/module.h>
16#include <linux/mutex.h>
17#include <linux/of_platform.h>
18#include <linux/of.h>
19#include <linux/of_graph.h>
20#include <linux/phy/phy.h>
21#include <linux/platform_device.h>
22#include <linux/regmap.h>
23
24#include <sound/hdmi-codec.h>
25
26#include <drm/drm_atomic_helper.h>
27#include <drm/drm_bridge.h>
28#include <drm/drm_crtc.h>
29#include <drm/drm_edid.h>
30#include <drm/drm_print.h>
31#include <drm/drm_probe_helper.h>
32
33#include "mtk_cec.h"
34#include "mtk_hdmi.h"
35#include "mtk_hdmi_regs.h"
36
37#define NCTS_BYTES 7
38
39enum mtk_hdmi_clk_id {
40 MTK_HDMI_CLK_HDMI_PIXEL,
41 MTK_HDMI_CLK_HDMI_PLL,
42 MTK_HDMI_CLK_AUD_BCLK,
43 MTK_HDMI_CLK_AUD_SPDIF,
44 MTK_HDMI_CLK_COUNT
45};
46
47enum hdmi_aud_input_type {
48 HDMI_AUD_INPUT_I2S = 0,
49 HDMI_AUD_INPUT_SPDIF,
50};
51
52enum hdmi_aud_i2s_fmt {
53 HDMI_I2S_MODE_RJT_24BIT = 0,
54 HDMI_I2S_MODE_RJT_16BIT,
55 HDMI_I2S_MODE_LJT_24BIT,
56 HDMI_I2S_MODE_LJT_16BIT,
57 HDMI_I2S_MODE_I2S_24BIT,
58 HDMI_I2S_MODE_I2S_16BIT
59};
60
61enum hdmi_aud_mclk {
62 HDMI_AUD_MCLK_128FS,
63 HDMI_AUD_MCLK_192FS,
64 HDMI_AUD_MCLK_256FS,
65 HDMI_AUD_MCLK_384FS,
66 HDMI_AUD_MCLK_512FS,
67 HDMI_AUD_MCLK_768FS,
68 HDMI_AUD_MCLK_1152FS,
69};
70
71enum hdmi_aud_channel_type {
72 HDMI_AUD_CHAN_TYPE_1_0 = 0,
73 HDMI_AUD_CHAN_TYPE_1_1,
74 HDMI_AUD_CHAN_TYPE_2_0,
75 HDMI_AUD_CHAN_TYPE_2_1,
76 HDMI_AUD_CHAN_TYPE_3_0,
77 HDMI_AUD_CHAN_TYPE_3_1,
78 HDMI_AUD_CHAN_TYPE_4_0,
79 HDMI_AUD_CHAN_TYPE_4_1,
80 HDMI_AUD_CHAN_TYPE_5_0,
81 HDMI_AUD_CHAN_TYPE_5_1,
82 HDMI_AUD_CHAN_TYPE_6_0,
83 HDMI_AUD_CHAN_TYPE_6_1,
84 HDMI_AUD_CHAN_TYPE_7_0,
85 HDMI_AUD_CHAN_TYPE_7_1,
86 HDMI_AUD_CHAN_TYPE_3_0_LRS,
87 HDMI_AUD_CHAN_TYPE_3_1_LRS,
88 HDMI_AUD_CHAN_TYPE_4_0_CLRS,
89 HDMI_AUD_CHAN_TYPE_4_1_CLRS,
90 HDMI_AUD_CHAN_TYPE_6_1_CS,
91 HDMI_AUD_CHAN_TYPE_6_1_CH,
92 HDMI_AUD_CHAN_TYPE_6_1_OH,
93 HDMI_AUD_CHAN_TYPE_6_1_CHR,
94 HDMI_AUD_CHAN_TYPE_7_1_LH_RH,
95 HDMI_AUD_CHAN_TYPE_7_1_LSR_RSR,
96 HDMI_AUD_CHAN_TYPE_7_1_LC_RC,
97 HDMI_AUD_CHAN_TYPE_7_1_LW_RW,
98 HDMI_AUD_CHAN_TYPE_7_1_LSD_RSD,
99 HDMI_AUD_CHAN_TYPE_7_1_LSS_RSS,
100 HDMI_AUD_CHAN_TYPE_7_1_LHS_RHS,
101 HDMI_AUD_CHAN_TYPE_7_1_CS_CH,
102 HDMI_AUD_CHAN_TYPE_7_1_CS_OH,
103 HDMI_AUD_CHAN_TYPE_7_1_CS_CHR,
104 HDMI_AUD_CHAN_TYPE_7_1_CH_OH,
105 HDMI_AUD_CHAN_TYPE_7_1_CH_CHR,
106 HDMI_AUD_CHAN_TYPE_7_1_OH_CHR,
107 HDMI_AUD_CHAN_TYPE_7_1_LSS_RSS_LSR_RSR,
108 HDMI_AUD_CHAN_TYPE_6_0_CS,
109 HDMI_AUD_CHAN_TYPE_6_0_CH,
110 HDMI_AUD_CHAN_TYPE_6_0_OH,
111 HDMI_AUD_CHAN_TYPE_6_0_CHR,
112 HDMI_AUD_CHAN_TYPE_7_0_LH_RH,
113 HDMI_AUD_CHAN_TYPE_7_0_LSR_RSR,
114 HDMI_AUD_CHAN_TYPE_7_0_LC_RC,
115 HDMI_AUD_CHAN_TYPE_7_0_LW_RW,
116 HDMI_AUD_CHAN_TYPE_7_0_LSD_RSD,
117 HDMI_AUD_CHAN_TYPE_7_0_LSS_RSS,
118 HDMI_AUD_CHAN_TYPE_7_0_LHS_RHS,
119 HDMI_AUD_CHAN_TYPE_7_0_CS_CH,
120 HDMI_AUD_CHAN_TYPE_7_0_CS_OH,
121 HDMI_AUD_CHAN_TYPE_7_0_CS_CHR,
122 HDMI_AUD_CHAN_TYPE_7_0_CH_OH,
123 HDMI_AUD_CHAN_TYPE_7_0_CH_CHR,
124 HDMI_AUD_CHAN_TYPE_7_0_OH_CHR,
125 HDMI_AUD_CHAN_TYPE_7_0_LSS_RSS_LSR_RSR,
126 HDMI_AUD_CHAN_TYPE_8_0_LH_RH_CS,
127 HDMI_AUD_CHAN_TYPE_UNKNOWN = 0xFF
128};
129
130enum hdmi_aud_channel_swap_type {
131 HDMI_AUD_SWAP_LR,
132 HDMI_AUD_SWAP_LFE_CC,
133 HDMI_AUD_SWAP_LSRS,
134 HDMI_AUD_SWAP_RLS_RRS,
135 HDMI_AUD_SWAP_LR_STATUS,
136};
137
138struct hdmi_audio_param {
139 enum hdmi_audio_coding_type aud_codec;
140 enum hdmi_audio_sample_size aud_sampe_size;
141 enum hdmi_aud_input_type aud_input_type;
142 enum hdmi_aud_i2s_fmt aud_i2s_fmt;
143 enum hdmi_aud_mclk aud_mclk;
144 enum hdmi_aud_channel_type aud_input_chan_type;
145 struct hdmi_codec_params codec_params;
146};
147
148struct mtk_hdmi_conf {
149 bool tz_disabled;
150 bool cea_modes_only;
151 unsigned long max_mode_clock;
152};
153
154struct mtk_hdmi {
155 struct drm_bridge bridge;
156 struct drm_bridge *next_bridge;
157 struct drm_connector *curr_conn;/* current connector (only valid when 'enabled') */
158 struct device *dev;
159 const struct mtk_hdmi_conf *conf;
160 struct phy *phy;
161 struct device *cec_dev;
162 struct i2c_adapter *ddc_adpt;
163 struct clk *clk[MTK_HDMI_CLK_COUNT];
164 struct drm_display_mode mode;
165 bool dvi_mode;
166 u32 min_clock;
167 u32 max_clock;
168 u32 max_hdisplay;
169 u32 max_vdisplay;
170 u32 ibias;
171 u32 ibias_up;
172 struct regmap *sys_regmap;
173 unsigned int sys_offset;
174 void __iomem *regs;
175 enum hdmi_colorspace csp;
176 struct hdmi_audio_param aud_param;
177 bool audio_enable;
178 bool powered;
179 bool enabled;
180 hdmi_codec_plugged_cb plugged_cb;
181 struct device *codec_dev;
182 struct mutex update_plugged_status_lock;
183};
184
185static inline struct mtk_hdmi *hdmi_ctx_from_bridge(struct drm_bridge *b)
186{
187 return container_of(b, struct mtk_hdmi, bridge);
188}
189
190static u32 mtk_hdmi_read(struct mtk_hdmi *hdmi, u32 offset)
191{
192 return readl(hdmi->regs + offset);
193}
194
195static void mtk_hdmi_write(struct mtk_hdmi *hdmi, u32 offset, u32 val)
196{
197 writel(val, hdmi->regs + offset);
198}
199
200static void mtk_hdmi_clear_bits(struct mtk_hdmi *hdmi, u32 offset, u32 bits)
201{
202 void __iomem *reg = hdmi->regs + offset;
203 u32 tmp;
204
205 tmp = readl(reg);
206 tmp &= ~bits;
207 writel(tmp, reg);
208}
209
210static void mtk_hdmi_set_bits(struct mtk_hdmi *hdmi, u32 offset, u32 bits)
211{
212 void __iomem *reg = hdmi->regs + offset;
213 u32 tmp;
214
215 tmp = readl(reg);
216 tmp |= bits;
217 writel(tmp, reg);
218}
219
220static void mtk_hdmi_mask(struct mtk_hdmi *hdmi, u32 offset, u32 val, u32 mask)
221{
222 void __iomem *reg = hdmi->regs + offset;
223 u32 tmp;
224
225 tmp = readl(reg);
226 tmp = (tmp & ~mask) | (val & mask);
227 writel(tmp, reg);
228}
229
230static void mtk_hdmi_hw_vid_black(struct mtk_hdmi *hdmi, bool black)
231{
232 mtk_hdmi_mask(hdmi, VIDEO_CFG_4, black ? GEN_RGB : NORMAL_PATH,
233 VIDEO_SOURCE_SEL);
234}
235
236static void mtk_hdmi_hw_make_reg_writable(struct mtk_hdmi *hdmi, bool enable)
237{
238 struct arm_smccc_res res;
239
240 /*
241 * MT8173 HDMI hardware has an output control bit to enable/disable HDMI
242 * output. This bit can only be controlled in ARM supervisor mode.
243 * The ARM trusted firmware provides an API for the HDMI driver to set
244 * this control bit to enable HDMI output in supervisor mode.
245 */
246 if (hdmi->conf && hdmi->conf->tz_disabled)
247 regmap_update_bits(hdmi->sys_regmap,
248 hdmi->sys_offset + HDMI_SYS_CFG20,
249 0x80008005, enable ? 0x80000005 : 0x8000);
250 else
251 arm_smccc_smc(MTK_SIP_SET_AUTHORIZED_SECURE_REG, 0x14000904,
252 0x80000000, 0, 0, 0, 0, 0, &res);
253
254 regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG20,
255 HDMI_PCLK_FREE_RUN, enable ? HDMI_PCLK_FREE_RUN : 0);
256 regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG1C,
257 HDMI_ON | ANLG_ON, enable ? (HDMI_ON | ANLG_ON) : 0);
258}
259
260static void mtk_hdmi_hw_1p4_version_enable(struct mtk_hdmi *hdmi, bool enable)
261{
262 regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG20,
263 HDMI2P0_EN, enable ? 0 : HDMI2P0_EN);
264}
265
266static void mtk_hdmi_hw_aud_mute(struct mtk_hdmi *hdmi)
267{
268 mtk_hdmi_set_bits(hdmi, GRL_AUDIO_CFG, AUDIO_ZERO);
269}
270
271static void mtk_hdmi_hw_aud_unmute(struct mtk_hdmi *hdmi)
272{
273 mtk_hdmi_clear_bits(hdmi, GRL_AUDIO_CFG, AUDIO_ZERO);
274}
275
276static void mtk_hdmi_hw_reset(struct mtk_hdmi *hdmi)
277{
278 regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG1C,
279 HDMI_RST, HDMI_RST);
280 regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG1C,
281 HDMI_RST, 0);
282 mtk_hdmi_clear_bits(hdmi, GRL_CFG3, CFG3_CONTROL_PACKET_DELAY);
283 regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG1C,
284 ANLG_ON, ANLG_ON);
285}
286
287static void mtk_hdmi_hw_enable_notice(struct mtk_hdmi *hdmi, bool enable_notice)
288{
289 mtk_hdmi_mask(hdmi, GRL_CFG2, enable_notice ? CFG2_NOTICE_EN : 0,
290 CFG2_NOTICE_EN);
291}
292
293static void mtk_hdmi_hw_write_int_mask(struct mtk_hdmi *hdmi, u32 int_mask)
294{
295 mtk_hdmi_write(hdmi, GRL_INT_MASK, int_mask);
296}
297
298static void mtk_hdmi_hw_enable_dvi_mode(struct mtk_hdmi *hdmi, bool enable)
299{
300 mtk_hdmi_mask(hdmi, GRL_CFG1, enable ? CFG1_DVI : 0, CFG1_DVI);
301}
302
303static void mtk_hdmi_hw_send_info_frame(struct mtk_hdmi *hdmi, u8 *buffer,
304 u8 len)
305{
306 u32 ctrl_reg = GRL_CTRL;
307 int i;
308 u8 *frame_data;
309 enum hdmi_infoframe_type frame_type;
310 u8 frame_ver;
311 u8 frame_len;
312 u8 checksum;
313 int ctrl_frame_en = 0;
314
315 frame_type = *buffer++;
316 frame_ver = *buffer++;
317 frame_len = *buffer++;
318 checksum = *buffer++;
319 frame_data = buffer;
320
321 dev_dbg(hdmi->dev,
322 "frame_type:0x%x,frame_ver:0x%x,frame_len:0x%x,checksum:0x%x\n",
323 frame_type, frame_ver, frame_len, checksum);
324
325 switch (frame_type) {
326 case HDMI_INFOFRAME_TYPE_AVI:
327 ctrl_frame_en = CTRL_AVI_EN;
328 ctrl_reg = GRL_CTRL;
329 break;
330 case HDMI_INFOFRAME_TYPE_SPD:
331 ctrl_frame_en = CTRL_SPD_EN;
332 ctrl_reg = GRL_CTRL;
333 break;
334 case HDMI_INFOFRAME_TYPE_AUDIO:
335 ctrl_frame_en = CTRL_AUDIO_EN;
336 ctrl_reg = GRL_CTRL;
337 break;
338 case HDMI_INFOFRAME_TYPE_VENDOR:
339 ctrl_frame_en = VS_EN;
340 ctrl_reg = GRL_ACP_ISRC_CTRL;
341 break;
342 default:
343 dev_err(hdmi->dev, "Unknown infoframe type %d\n", frame_type);
344 return;
345 }
346 mtk_hdmi_clear_bits(hdmi, ctrl_reg, ctrl_frame_en);
347 mtk_hdmi_write(hdmi, GRL_INFOFRM_TYPE, frame_type);
348 mtk_hdmi_write(hdmi, GRL_INFOFRM_VER, frame_ver);
349 mtk_hdmi_write(hdmi, GRL_INFOFRM_LNG, frame_len);
350
351 mtk_hdmi_write(hdmi, GRL_IFM_PORT, checksum);
352 for (i = 0; i < frame_len; i++)
353 mtk_hdmi_write(hdmi, GRL_IFM_PORT, frame_data[i]);
354
355 mtk_hdmi_set_bits(hdmi, ctrl_reg, ctrl_frame_en);
356}
357
358static void mtk_hdmi_hw_send_aud_packet(struct mtk_hdmi *hdmi, bool enable)
359{
360 mtk_hdmi_mask(hdmi, GRL_SHIFT_R2, enable ? 0 : AUDIO_PACKET_OFF,
361 AUDIO_PACKET_OFF);
362}
363
364static void mtk_hdmi_hw_config_sys(struct mtk_hdmi *hdmi)
365{
366 regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG20,
367 HDMI_OUT_FIFO_EN | MHL_MODE_ON, 0);
368 usleep_range(2000, 4000);
369 regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG20,
370 HDMI_OUT_FIFO_EN | MHL_MODE_ON, HDMI_OUT_FIFO_EN);
371}
372
373static void mtk_hdmi_hw_set_deep_color_mode(struct mtk_hdmi *hdmi)
374{
375 regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG20,
376 DEEP_COLOR_MODE_MASK | DEEP_COLOR_EN,
377 COLOR_8BIT_MODE);
378}
379
380static void mtk_hdmi_hw_send_av_mute(struct mtk_hdmi *hdmi)
381{
382 mtk_hdmi_clear_bits(hdmi, GRL_CFG4, CTRL_AVMUTE);
383 usleep_range(2000, 4000);
384 mtk_hdmi_set_bits(hdmi, GRL_CFG4, CTRL_AVMUTE);
385}
386
387static void mtk_hdmi_hw_send_av_unmute(struct mtk_hdmi *hdmi)
388{
389 mtk_hdmi_mask(hdmi, GRL_CFG4, CFG4_AV_UNMUTE_EN,
390 CFG4_AV_UNMUTE_EN | CFG4_AV_UNMUTE_SET);
391 usleep_range(2000, 4000);
392 mtk_hdmi_mask(hdmi, GRL_CFG4, CFG4_AV_UNMUTE_SET,
393 CFG4_AV_UNMUTE_EN | CFG4_AV_UNMUTE_SET);
394}
395
396static void mtk_hdmi_hw_ncts_enable(struct mtk_hdmi *hdmi, bool on)
397{
398 mtk_hdmi_mask(hdmi, GRL_CTS_CTRL, on ? 0 : CTS_CTRL_SOFT,
399 CTS_CTRL_SOFT);
400}
401
402static void mtk_hdmi_hw_ncts_auto_write_enable(struct mtk_hdmi *hdmi,
403 bool enable)
404{
405 mtk_hdmi_mask(hdmi, GRL_CTS_CTRL, enable ? NCTS_WRI_ANYTIME : 0,
406 NCTS_WRI_ANYTIME);
407}
408
409static void mtk_hdmi_hw_msic_setting(struct mtk_hdmi *hdmi,
410 struct drm_display_mode *mode)
411{
412 mtk_hdmi_clear_bits(hdmi, GRL_CFG4, CFG4_MHL_MODE);
413
414 if (mode->flags & DRM_MODE_FLAG_INTERLACE &&
415 mode->clock == 74250 &&
416 mode->vdisplay == 1080)
417 mtk_hdmi_clear_bits(hdmi, GRL_CFG2, CFG2_MHL_DE_SEL);
418 else
419 mtk_hdmi_set_bits(hdmi, GRL_CFG2, CFG2_MHL_DE_SEL);
420}
421
422static void mtk_hdmi_hw_aud_set_channel_swap(struct mtk_hdmi *hdmi,
423 enum hdmi_aud_channel_swap_type swap)
424{
425 u8 swap_bit;
426
427 switch (swap) {
428 case HDMI_AUD_SWAP_LR:
429 swap_bit = LR_SWAP;
430 break;
431 case HDMI_AUD_SWAP_LFE_CC:
432 swap_bit = LFE_CC_SWAP;
433 break;
434 case HDMI_AUD_SWAP_LSRS:
435 swap_bit = LSRS_SWAP;
436 break;
437 case HDMI_AUD_SWAP_RLS_RRS:
438 swap_bit = RLS_RRS_SWAP;
439 break;
440 case HDMI_AUD_SWAP_LR_STATUS:
441 swap_bit = LR_STATUS_SWAP;
442 break;
443 default:
444 swap_bit = LFE_CC_SWAP;
445 break;
446 }
447 mtk_hdmi_mask(hdmi, GRL_CH_SWAP, swap_bit, 0xff);
448}
449
450static void mtk_hdmi_hw_aud_set_bit_num(struct mtk_hdmi *hdmi,
451 enum hdmi_audio_sample_size bit_num)
452{
453 u32 val;
454
455 switch (bit_num) {
456 case HDMI_AUDIO_SAMPLE_SIZE_16:
457 val = AOUT_16BIT;
458 break;
459 case HDMI_AUDIO_SAMPLE_SIZE_20:
460 val = AOUT_20BIT;
461 break;
462 case HDMI_AUDIO_SAMPLE_SIZE_24:
463 case HDMI_AUDIO_SAMPLE_SIZE_STREAM:
464 val = AOUT_24BIT;
465 break;
466 }
467
468 mtk_hdmi_mask(hdmi, GRL_AOUT_CFG, val, AOUT_BNUM_SEL_MASK);
469}
470
471static void mtk_hdmi_hw_aud_set_i2s_fmt(struct mtk_hdmi *hdmi,
472 enum hdmi_aud_i2s_fmt i2s_fmt)
473{
474 u32 val;
475
476 val = mtk_hdmi_read(hdmi, GRL_CFG0);
477 val &= ~(CFG0_W_LENGTH_MASK | CFG0_I2S_MODE_MASK);
478
479 switch (i2s_fmt) {
480 case HDMI_I2S_MODE_RJT_24BIT:
481 val |= CFG0_I2S_MODE_RTJ | CFG0_W_LENGTH_24BIT;
482 break;
483 case HDMI_I2S_MODE_RJT_16BIT:
484 val |= CFG0_I2S_MODE_RTJ | CFG0_W_LENGTH_16BIT;
485 break;
486 case HDMI_I2S_MODE_LJT_24BIT:
487 default:
488 val |= CFG0_I2S_MODE_LTJ | CFG0_W_LENGTH_24BIT;
489 break;
490 case HDMI_I2S_MODE_LJT_16BIT:
491 val |= CFG0_I2S_MODE_LTJ | CFG0_W_LENGTH_16BIT;
492 break;
493 case HDMI_I2S_MODE_I2S_24BIT:
494 val |= CFG0_I2S_MODE_I2S | CFG0_W_LENGTH_24BIT;
495 break;
496 case HDMI_I2S_MODE_I2S_16BIT:
497 val |= CFG0_I2S_MODE_I2S | CFG0_W_LENGTH_16BIT;
498 break;
499 }
500 mtk_hdmi_write(hdmi, GRL_CFG0, val);
501}
502
503static void mtk_hdmi_hw_audio_config(struct mtk_hdmi *hdmi, bool dst)
504{
505 const u8 mask = HIGH_BIT_RATE | DST_NORMAL_DOUBLE | SACD_DST | DSD_SEL;
506 u8 val;
507
508 /* Disable high bitrate, set DST packet normal/double */
509 mtk_hdmi_clear_bits(hdmi, GRL_AOUT_CFG, HIGH_BIT_RATE_PACKET_ALIGN);
510
511 if (dst)
512 val = DST_NORMAL_DOUBLE | SACD_DST;
513 else
514 val = 0;
515
516 mtk_hdmi_mask(hdmi, GRL_AUDIO_CFG, val, mask);
517}
518
519static void mtk_hdmi_hw_aud_set_i2s_chan_num(struct mtk_hdmi *hdmi,
520 enum hdmi_aud_channel_type channel_type,
521 u8 channel_count)
522{
523 unsigned int ch_switch;
524 u8 i2s_uv;
525
526 ch_switch = CH_SWITCH(7, 7) | CH_SWITCH(6, 6) |
527 CH_SWITCH(5, 5) | CH_SWITCH(4, 4) |
528 CH_SWITCH(3, 3) | CH_SWITCH(1, 2) |
529 CH_SWITCH(2, 1) | CH_SWITCH(0, 0);
530
531 if (channel_count == 2) {
532 i2s_uv = I2S_UV_CH_EN(0);
533 } else if (channel_count == 3 || channel_count == 4) {
534 if (channel_count == 4 &&
535 (channel_type == HDMI_AUD_CHAN_TYPE_3_0_LRS ||
536 channel_type == HDMI_AUD_CHAN_TYPE_4_0))
537 i2s_uv = I2S_UV_CH_EN(2) | I2S_UV_CH_EN(0);
538 else
539 i2s_uv = I2S_UV_CH_EN(3) | I2S_UV_CH_EN(2);
540 } else if (channel_count == 6 || channel_count == 5) {
541 if (channel_count == 6 &&
542 channel_type != HDMI_AUD_CHAN_TYPE_5_1 &&
543 channel_type != HDMI_AUD_CHAN_TYPE_4_1_CLRS) {
544 i2s_uv = I2S_UV_CH_EN(3) | I2S_UV_CH_EN(2) |
545 I2S_UV_CH_EN(1) | I2S_UV_CH_EN(0);
546 } else {
547 i2s_uv = I2S_UV_CH_EN(2) | I2S_UV_CH_EN(1) |
548 I2S_UV_CH_EN(0);
549 }
550 } else if (channel_count == 8 || channel_count == 7) {
551 i2s_uv = I2S_UV_CH_EN(3) | I2S_UV_CH_EN(2) |
552 I2S_UV_CH_EN(1) | I2S_UV_CH_EN(0);
553 } else {
554 i2s_uv = I2S_UV_CH_EN(0);
555 }
556
557 mtk_hdmi_write(hdmi, GRL_CH_SW0, ch_switch & 0xff);
558 mtk_hdmi_write(hdmi, GRL_CH_SW1, (ch_switch >> 8) & 0xff);
559 mtk_hdmi_write(hdmi, GRL_CH_SW2, (ch_switch >> 16) & 0xff);
560 mtk_hdmi_write(hdmi, GRL_I2S_UV, i2s_uv);
561}
562
563static void mtk_hdmi_hw_aud_set_input_type(struct mtk_hdmi *hdmi,
564 enum hdmi_aud_input_type input_type)
565{
566 u32 val;
567
568 val = mtk_hdmi_read(hdmi, GRL_CFG1);
569 if (input_type == HDMI_AUD_INPUT_I2S &&
570 (val & CFG1_SPDIF) == CFG1_SPDIF) {
571 val &= ~CFG1_SPDIF;
572 } else if (input_type == HDMI_AUD_INPUT_SPDIF &&
573 (val & CFG1_SPDIF) == 0) {
574 val |= CFG1_SPDIF;
575 }
576 mtk_hdmi_write(hdmi, GRL_CFG1, val);
577}
578
579static void mtk_hdmi_hw_aud_set_channel_status(struct mtk_hdmi *hdmi,
580 u8 *channel_status)
581{
582 int i;
583
584 for (i = 0; i < 5; i++) {
585 mtk_hdmi_write(hdmi, GRL_I2S_C_STA0 + i * 4, channel_status[i]);
586 mtk_hdmi_write(hdmi, GRL_L_STATUS_0 + i * 4, channel_status[i]);
587 mtk_hdmi_write(hdmi, GRL_R_STATUS_0 + i * 4, channel_status[i]);
588 }
589 for (; i < 24; i++) {
590 mtk_hdmi_write(hdmi, GRL_L_STATUS_0 + i * 4, 0);
591 mtk_hdmi_write(hdmi, GRL_R_STATUS_0 + i * 4, 0);
592 }
593}
594
595static void mtk_hdmi_hw_aud_src_reenable(struct mtk_hdmi *hdmi)
596{
597 u32 val;
598
599 val = mtk_hdmi_read(hdmi, GRL_MIX_CTRL);
600 if (val & MIX_CTRL_SRC_EN) {
601 val &= ~MIX_CTRL_SRC_EN;
602 mtk_hdmi_write(hdmi, GRL_MIX_CTRL, val);
603 usleep_range(255, 512);
604 val |= MIX_CTRL_SRC_EN;
605 mtk_hdmi_write(hdmi, GRL_MIX_CTRL, val);
606 }
607}
608
609static void mtk_hdmi_hw_aud_src_disable(struct mtk_hdmi *hdmi)
610{
611 u32 val;
612
613 val = mtk_hdmi_read(hdmi, GRL_MIX_CTRL);
614 val &= ~MIX_CTRL_SRC_EN;
615 mtk_hdmi_write(hdmi, GRL_MIX_CTRL, val);
616 mtk_hdmi_write(hdmi, GRL_SHIFT_L1, 0x00);
617}
618
619static void mtk_hdmi_hw_aud_set_mclk(struct mtk_hdmi *hdmi,
620 enum hdmi_aud_mclk mclk)
621{
622 u32 val;
623
624 val = mtk_hdmi_read(hdmi, GRL_CFG5);
625 val &= CFG5_CD_RATIO_MASK;
626
627 switch (mclk) {
628 case HDMI_AUD_MCLK_128FS:
629 val |= CFG5_FS128;
630 break;
631 case HDMI_AUD_MCLK_256FS:
632 val |= CFG5_FS256;
633 break;
634 case HDMI_AUD_MCLK_384FS:
635 val |= CFG5_FS384;
636 break;
637 case HDMI_AUD_MCLK_512FS:
638 val |= CFG5_FS512;
639 break;
640 case HDMI_AUD_MCLK_768FS:
641 val |= CFG5_FS768;
642 break;
643 default:
644 val |= CFG5_FS256;
645 break;
646 }
647 mtk_hdmi_write(hdmi, GRL_CFG5, val);
648}
649
650struct hdmi_acr_n {
651 unsigned int clock;
652 unsigned int n[3];
653};
654
655/* Recommended N values from HDMI specification, tables 7-1 to 7-3 */
656static const struct hdmi_acr_n hdmi_rec_n_table[] = {
657 /* Clock, N: 32kHz 44.1kHz 48kHz */
658 { 25175, { 4576, 7007, 6864 } },
659 { 74176, { 11648, 17836, 11648 } },
660 { 148352, { 11648, 8918, 5824 } },
661 { 296703, { 5824, 4459, 5824 } },
662 { 297000, { 3072, 4704, 5120 } },
663 { 0, { 4096, 6272, 6144 } }, /* all other TMDS clocks */
664};
665
666/**
667 * hdmi_recommended_n() - Return N value recommended by HDMI specification
668 * @freq: audio sample rate in Hz
669 * @clock: rounded TMDS clock in kHz
670 */
671static unsigned int hdmi_recommended_n(unsigned int freq, unsigned int clock)
672{
673 const struct hdmi_acr_n *recommended;
674 unsigned int i;
675
676 for (i = 0; i < ARRAY_SIZE(hdmi_rec_n_table) - 1; i++) {
677 if (clock == hdmi_rec_n_table[i].clock)
678 break;
679 }
680 recommended = hdmi_rec_n_table + i;
681
682 switch (freq) {
683 case 32000:
684 return recommended->n[0];
685 case 44100:
686 return recommended->n[1];
687 case 48000:
688 return recommended->n[2];
689 case 88200:
690 return recommended->n[1] * 2;
691 case 96000:
692 return recommended->n[2] * 2;
693 case 176400:
694 return recommended->n[1] * 4;
695 case 192000:
696 return recommended->n[2] * 4;
697 default:
698 return (128 * freq) / 1000;
699 }
700}
701
702static unsigned int hdmi_mode_clock_to_hz(unsigned int clock)
703{
704 switch (clock) {
705 case 25175:
706 return 25174825; /* 25.2/1.001 MHz */
707 case 74176:
708 return 74175824; /* 74.25/1.001 MHz */
709 case 148352:
710 return 148351648; /* 148.5/1.001 MHz */
711 case 296703:
712 return 296703297; /* 297/1.001 MHz */
713 default:
714 return clock * 1000;
715 }
716}
717
718static unsigned int hdmi_expected_cts(unsigned int audio_sample_rate,
719 unsigned int tmds_clock, unsigned int n)
720{
721 return DIV_ROUND_CLOSEST_ULL((u64)hdmi_mode_clock_to_hz(tmds_clock) * n,
722 128 * audio_sample_rate);
723}
724
725static void do_hdmi_hw_aud_set_ncts(struct mtk_hdmi *hdmi, unsigned int n,
726 unsigned int cts)
727{
728 unsigned char val[NCTS_BYTES];
729 int i;
730
731 mtk_hdmi_write(hdmi, GRL_NCTS, 0);
732 mtk_hdmi_write(hdmi, GRL_NCTS, 0);
733 mtk_hdmi_write(hdmi, GRL_NCTS, 0);
734 memset(val, 0, sizeof(val));
735
736 val[0] = (cts >> 24) & 0xff;
737 val[1] = (cts >> 16) & 0xff;
738 val[2] = (cts >> 8) & 0xff;
739 val[3] = cts & 0xff;
740
741 val[4] = (n >> 16) & 0xff;
742 val[5] = (n >> 8) & 0xff;
743 val[6] = n & 0xff;
744
745 for (i = 0; i < NCTS_BYTES; i++)
746 mtk_hdmi_write(hdmi, GRL_NCTS, val[i]);
747}
748
749static void mtk_hdmi_hw_aud_set_ncts(struct mtk_hdmi *hdmi,
750 unsigned int sample_rate,
751 unsigned int clock)
752{
753 unsigned int n, cts;
754
755 n = hdmi_recommended_n(sample_rate, clock);
756 cts = hdmi_expected_cts(sample_rate, clock, n);
757
758 dev_dbg(hdmi->dev, "%s: sample_rate=%u, clock=%d, cts=%u, n=%u\n",
759 __func__, sample_rate, clock, n, cts);
760
761 mtk_hdmi_mask(hdmi, DUMMY_304, AUDIO_I2S_NCTS_SEL_64,
762 AUDIO_I2S_NCTS_SEL);
763 do_hdmi_hw_aud_set_ncts(hdmi, n, cts);
764}
765
766static u8 mtk_hdmi_aud_get_chnl_count(enum hdmi_aud_channel_type channel_type)
767{
768 switch (channel_type) {
769 case HDMI_AUD_CHAN_TYPE_1_0:
770 case HDMI_AUD_CHAN_TYPE_1_1:
771 case HDMI_AUD_CHAN_TYPE_2_0:
772 return 2;
773 case HDMI_AUD_CHAN_TYPE_2_1:
774 case HDMI_AUD_CHAN_TYPE_3_0:
775 return 3;
776 case HDMI_AUD_CHAN_TYPE_3_1:
777 case HDMI_AUD_CHAN_TYPE_4_0:
778 case HDMI_AUD_CHAN_TYPE_3_0_LRS:
779 return 4;
780 case HDMI_AUD_CHAN_TYPE_4_1:
781 case HDMI_AUD_CHAN_TYPE_5_0:
782 case HDMI_AUD_CHAN_TYPE_3_1_LRS:
783 case HDMI_AUD_CHAN_TYPE_4_0_CLRS:
784 return 5;
785 case HDMI_AUD_CHAN_TYPE_5_1:
786 case HDMI_AUD_CHAN_TYPE_6_0:
787 case HDMI_AUD_CHAN_TYPE_4_1_CLRS:
788 case HDMI_AUD_CHAN_TYPE_6_0_CS:
789 case HDMI_AUD_CHAN_TYPE_6_0_CH:
790 case HDMI_AUD_CHAN_TYPE_6_0_OH:
791 case HDMI_AUD_CHAN_TYPE_6_0_CHR:
792 return 6;
793 case HDMI_AUD_CHAN_TYPE_6_1:
794 case HDMI_AUD_CHAN_TYPE_6_1_CS:
795 case HDMI_AUD_CHAN_TYPE_6_1_CH:
796 case HDMI_AUD_CHAN_TYPE_6_1_OH:
797 case HDMI_AUD_CHAN_TYPE_6_1_CHR:
798 case HDMI_AUD_CHAN_TYPE_7_0:
799 case HDMI_AUD_CHAN_TYPE_7_0_LH_RH:
800 case HDMI_AUD_CHAN_TYPE_7_0_LSR_RSR:
801 case HDMI_AUD_CHAN_TYPE_7_0_LC_RC:
802 case HDMI_AUD_CHAN_TYPE_7_0_LW_RW:
803 case HDMI_AUD_CHAN_TYPE_7_0_LSD_RSD:
804 case HDMI_AUD_CHAN_TYPE_7_0_LSS_RSS:
805 case HDMI_AUD_CHAN_TYPE_7_0_LHS_RHS:
806 case HDMI_AUD_CHAN_TYPE_7_0_CS_CH:
807 case HDMI_AUD_CHAN_TYPE_7_0_CS_OH:
808 case HDMI_AUD_CHAN_TYPE_7_0_CS_CHR:
809 case HDMI_AUD_CHAN_TYPE_7_0_CH_OH:
810 case HDMI_AUD_CHAN_TYPE_7_0_CH_CHR:
811 case HDMI_AUD_CHAN_TYPE_7_0_OH_CHR:
812 case HDMI_AUD_CHAN_TYPE_7_0_LSS_RSS_LSR_RSR:
813 case HDMI_AUD_CHAN_TYPE_8_0_LH_RH_CS:
814 return 7;
815 case HDMI_AUD_CHAN_TYPE_7_1:
816 case HDMI_AUD_CHAN_TYPE_7_1_LH_RH:
817 case HDMI_AUD_CHAN_TYPE_7_1_LSR_RSR:
818 case HDMI_AUD_CHAN_TYPE_7_1_LC_RC:
819 case HDMI_AUD_CHAN_TYPE_7_1_LW_RW:
820 case HDMI_AUD_CHAN_TYPE_7_1_LSD_RSD:
821 case HDMI_AUD_CHAN_TYPE_7_1_LSS_RSS:
822 case HDMI_AUD_CHAN_TYPE_7_1_LHS_RHS:
823 case HDMI_AUD_CHAN_TYPE_7_1_CS_CH:
824 case HDMI_AUD_CHAN_TYPE_7_1_CS_OH:
825 case HDMI_AUD_CHAN_TYPE_7_1_CS_CHR:
826 case HDMI_AUD_CHAN_TYPE_7_1_CH_OH:
827 case HDMI_AUD_CHAN_TYPE_7_1_CH_CHR:
828 case HDMI_AUD_CHAN_TYPE_7_1_OH_CHR:
829 case HDMI_AUD_CHAN_TYPE_7_1_LSS_RSS_LSR_RSR:
830 return 8;
831 default:
832 return 2;
833 }
834}
835
836static int mtk_hdmi_video_change_vpll(struct mtk_hdmi *hdmi, u32 clock)
837{
838 unsigned long rate;
839 int ret;
840
841 /* The DPI driver already should have set TVDPLL to the correct rate */
842 ret = clk_set_rate(hdmi->clk[MTK_HDMI_CLK_HDMI_PLL], clock);
843 if (ret) {
844 dev_err(hdmi->dev, "Failed to set PLL to %u Hz: %d\n", clock,
845 ret);
846 return ret;
847 }
848
849 rate = clk_get_rate(hdmi->clk[MTK_HDMI_CLK_HDMI_PLL]);
850
851 if (DIV_ROUND_CLOSEST(rate, 1000) != DIV_ROUND_CLOSEST(clock, 1000))
852 dev_warn(hdmi->dev, "Want PLL %u Hz, got %lu Hz\n", clock,
853 rate);
854 else
855 dev_dbg(hdmi->dev, "Want PLL %u Hz, got %lu Hz\n", clock, rate);
856
857 mtk_hdmi_hw_config_sys(hdmi);
858 mtk_hdmi_hw_set_deep_color_mode(hdmi);
859 return 0;
860}
861
862static void mtk_hdmi_video_set_display_mode(struct mtk_hdmi *hdmi,
863 struct drm_display_mode *mode)
864{
865 mtk_hdmi_hw_reset(hdmi);
866 mtk_hdmi_hw_enable_notice(hdmi, true);
867 mtk_hdmi_hw_write_int_mask(hdmi, 0xff);
868 mtk_hdmi_hw_enable_dvi_mode(hdmi, hdmi->dvi_mode);
869 mtk_hdmi_hw_ncts_auto_write_enable(hdmi, true);
870
871 mtk_hdmi_hw_msic_setting(hdmi, mode);
872}
873
874
875static void mtk_hdmi_aud_set_input(struct mtk_hdmi *hdmi)
876{
877 enum hdmi_aud_channel_type chan_type;
878 u8 chan_count;
879 bool dst;
880
881 mtk_hdmi_hw_aud_set_channel_swap(hdmi, HDMI_AUD_SWAP_LFE_CC);
882 mtk_hdmi_set_bits(hdmi, GRL_MIX_CTRL, MIX_CTRL_FLAT);
883
884 if (hdmi->aud_param.aud_input_type == HDMI_AUD_INPUT_SPDIF &&
885 hdmi->aud_param.aud_codec == HDMI_AUDIO_CODING_TYPE_DST) {
886 mtk_hdmi_hw_aud_set_bit_num(hdmi, HDMI_AUDIO_SAMPLE_SIZE_24);
887 } else if (hdmi->aud_param.aud_i2s_fmt == HDMI_I2S_MODE_LJT_24BIT) {
888 hdmi->aud_param.aud_i2s_fmt = HDMI_I2S_MODE_LJT_16BIT;
889 }
890
891 mtk_hdmi_hw_aud_set_i2s_fmt(hdmi, hdmi->aud_param.aud_i2s_fmt);
892 mtk_hdmi_hw_aud_set_bit_num(hdmi, HDMI_AUDIO_SAMPLE_SIZE_24);
893
894 dst = ((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_audio_config(hdmi, dst);
897
898 if (hdmi->aud_param.aud_input_type == HDMI_AUD_INPUT_SPDIF)
899 chan_type = HDMI_AUD_CHAN_TYPE_2_0;
900 else
901 chan_type = hdmi->aud_param.aud_input_chan_type;
902 chan_count = mtk_hdmi_aud_get_chnl_count(chan_type);
903 mtk_hdmi_hw_aud_set_i2s_chan_num(hdmi, chan_type, chan_count);
904 mtk_hdmi_hw_aud_set_input_type(hdmi, hdmi->aud_param.aud_input_type);
905}
906
907static int mtk_hdmi_aud_set_src(struct mtk_hdmi *hdmi,
908 struct drm_display_mode *display_mode)
909{
910 unsigned int sample_rate = hdmi->aud_param.codec_params.sample_rate;
911
912 mtk_hdmi_hw_ncts_enable(hdmi, false);
913 mtk_hdmi_hw_aud_src_disable(hdmi);
914 mtk_hdmi_clear_bits(hdmi, GRL_CFG2, CFG2_ACLK_INV);
915
916 if (hdmi->aud_param.aud_input_type == HDMI_AUD_INPUT_I2S) {
917 switch (sample_rate) {
918 case 32000:
919 case 44100:
920 case 48000:
921 case 88200:
922 case 96000:
923 break;
924 default:
925 return -EINVAL;
926 }
927 mtk_hdmi_hw_aud_set_mclk(hdmi, hdmi->aud_param.aud_mclk);
928 } else {
929 switch (sample_rate) {
930 case 32000:
931 case 44100:
932 case 48000:
933 break;
934 default:
935 return -EINVAL;
936 }
937 mtk_hdmi_hw_aud_set_mclk(hdmi, HDMI_AUD_MCLK_128FS);
938 }
939
940 mtk_hdmi_hw_aud_set_ncts(hdmi, sample_rate, display_mode->clock);
941
942 mtk_hdmi_hw_aud_src_reenable(hdmi);
943 return 0;
944}
945
946static int mtk_hdmi_aud_output_config(struct mtk_hdmi *hdmi,
947 struct drm_display_mode *display_mode)
948{
949 mtk_hdmi_hw_aud_mute(hdmi);
950 mtk_hdmi_hw_send_aud_packet(hdmi, false);
951
952 mtk_hdmi_aud_set_input(hdmi);
953 mtk_hdmi_aud_set_src(hdmi, display_mode);
954 mtk_hdmi_hw_aud_set_channel_status(hdmi,
955 hdmi->aud_param.codec_params.iec.status);
956
957 usleep_range(50, 100);
958
959 mtk_hdmi_hw_ncts_enable(hdmi, true);
960 mtk_hdmi_hw_send_aud_packet(hdmi, true);
961 mtk_hdmi_hw_aud_unmute(hdmi);
962 return 0;
963}
964
965static int mtk_hdmi_setup_avi_infoframe(struct mtk_hdmi *hdmi,
966 struct drm_display_mode *mode)
967{
968 struct hdmi_avi_infoframe frame;
969 u8 buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AVI_INFOFRAME_SIZE];
970 ssize_t err;
971
972 err = drm_hdmi_avi_infoframe_from_display_mode(&frame,
973 hdmi->curr_conn, mode);
974 if (err < 0) {
975 dev_err(hdmi->dev,
976 "Failed to get AVI infoframe from mode: %zd\n", err);
977 return err;
978 }
979
980 err = hdmi_avi_infoframe_pack(&frame, buffer, sizeof(buffer));
981 if (err < 0) {
982 dev_err(hdmi->dev, "Failed to pack AVI infoframe: %zd\n", err);
983 return err;
984 }
985
986 mtk_hdmi_hw_send_info_frame(hdmi, buffer, sizeof(buffer));
987 return 0;
988}
989
990static int mtk_hdmi_setup_spd_infoframe(struct mtk_hdmi *hdmi,
991 const char *vendor,
992 const char *product)
993{
994 struct hdmi_spd_infoframe frame;
995 u8 buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_SPD_INFOFRAME_SIZE];
996 ssize_t err;
997
998 err = hdmi_spd_infoframe_init(&frame, vendor, product);
999 if (err < 0) {
1000 dev_err(hdmi->dev, "Failed to initialize SPD infoframe: %zd\n",
1001 err);
1002 return err;
1003 }
1004
1005 err = hdmi_spd_infoframe_pack(&frame, buffer, sizeof(buffer));
1006 if (err < 0) {
1007 dev_err(hdmi->dev, "Failed to pack SDP infoframe: %zd\n", err);
1008 return err;
1009 }
1010
1011 mtk_hdmi_hw_send_info_frame(hdmi, buffer, sizeof(buffer));
1012 return 0;
1013}
1014
1015static int mtk_hdmi_setup_audio_infoframe(struct mtk_hdmi *hdmi)
1016{
1017 struct hdmi_audio_infoframe frame;
1018 u8 buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AUDIO_INFOFRAME_SIZE];
1019 ssize_t err;
1020
1021 err = hdmi_audio_infoframe_init(&frame);
1022 if (err < 0) {
1023 dev_err(hdmi->dev, "Failed to setup audio infoframe: %zd\n",
1024 err);
1025 return err;
1026 }
1027
1028 frame.coding_type = HDMI_AUDIO_CODING_TYPE_STREAM;
1029 frame.sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM;
1030 frame.sample_size = HDMI_AUDIO_SAMPLE_SIZE_STREAM;
1031 frame.channels = mtk_hdmi_aud_get_chnl_count(
1032 hdmi->aud_param.aud_input_chan_type);
1033
1034 err = hdmi_audio_infoframe_pack(&frame, buffer, sizeof(buffer));
1035 if (err < 0) {
1036 dev_err(hdmi->dev, "Failed to pack audio infoframe: %zd\n",
1037 err);
1038 return err;
1039 }
1040
1041 mtk_hdmi_hw_send_info_frame(hdmi, buffer, sizeof(buffer));
1042 return 0;
1043}
1044
1045static int mtk_hdmi_setup_vendor_specific_infoframe(struct mtk_hdmi *hdmi,
1046 struct drm_display_mode *mode)
1047{
1048 struct hdmi_vendor_infoframe frame;
1049 u8 buffer[10];
1050 ssize_t err;
1051
1052 err = drm_hdmi_vendor_infoframe_from_display_mode(&frame,
1053 hdmi->curr_conn, mode);
1054 if (err) {
1055 dev_err(hdmi->dev,
1056 "Failed to get vendor infoframe from mode: %zd\n", err);
1057 return err;
1058 }
1059
1060 err = hdmi_vendor_infoframe_pack(&frame, buffer, sizeof(buffer));
1061 if (err < 0) {
1062 dev_err(hdmi->dev, "Failed to pack vendor infoframe: %zd\n",
1063 err);
1064 return err;
1065 }
1066
1067 mtk_hdmi_hw_send_info_frame(hdmi, buffer, sizeof(buffer));
1068 return 0;
1069}
1070
1071static int mtk_hdmi_output_init(struct mtk_hdmi *hdmi)
1072{
1073 struct hdmi_audio_param *aud_param = &hdmi->aud_param;
1074
1075 hdmi->csp = HDMI_COLORSPACE_RGB;
1076 aud_param->aud_codec = HDMI_AUDIO_CODING_TYPE_PCM;
1077 aud_param->aud_sampe_size = HDMI_AUDIO_SAMPLE_SIZE_16;
1078 aud_param->aud_input_type = HDMI_AUD_INPUT_I2S;
1079 aud_param->aud_i2s_fmt = HDMI_I2S_MODE_I2S_24BIT;
1080 aud_param->aud_mclk = HDMI_AUD_MCLK_128FS;
1081 aud_param->aud_input_chan_type = HDMI_AUD_CHAN_TYPE_2_0;
1082
1083 return 0;
1084}
1085
1086static void mtk_hdmi_audio_enable(struct mtk_hdmi *hdmi)
1087{
1088 mtk_hdmi_hw_send_aud_packet(hdmi, true);
1089 hdmi->audio_enable = true;
1090}
1091
1092static void mtk_hdmi_audio_disable(struct mtk_hdmi *hdmi)
1093{
1094 mtk_hdmi_hw_send_aud_packet(hdmi, false);
1095 hdmi->audio_enable = false;
1096}
1097
1098static int mtk_hdmi_audio_set_param(struct mtk_hdmi *hdmi,
1099 struct hdmi_audio_param *param)
1100{
1101 if (!hdmi->audio_enable) {
1102 dev_err(hdmi->dev, "hdmi audio is in disable state!\n");
1103 return -EINVAL;
1104 }
1105 dev_dbg(hdmi->dev, "codec:%d, input:%d, channel:%d, fs:%d\n",
1106 param->aud_codec, param->aud_input_type,
1107 param->aud_input_chan_type, param->codec_params.sample_rate);
1108 memcpy(&hdmi->aud_param, param, sizeof(*param));
1109 return mtk_hdmi_aud_output_config(hdmi, &hdmi->mode);
1110}
1111
1112static int mtk_hdmi_output_set_display_mode(struct mtk_hdmi *hdmi,
1113 struct drm_display_mode *mode)
1114{
1115 int ret;
1116
1117 mtk_hdmi_hw_vid_black(hdmi, true);
1118 mtk_hdmi_hw_aud_mute(hdmi);
1119 mtk_hdmi_hw_send_av_mute(hdmi);
1120 phy_power_off(hdmi->phy);
1121
1122 ret = mtk_hdmi_video_change_vpll(hdmi,
1123 mode->clock * 1000);
1124 if (ret) {
1125 dev_err(hdmi->dev, "Failed to set vpll: %d\n", ret);
1126 return ret;
1127 }
1128 mtk_hdmi_video_set_display_mode(hdmi, mode);
1129
1130 phy_power_on(hdmi->phy);
1131 mtk_hdmi_aud_output_config(hdmi, mode);
1132
1133 mtk_hdmi_hw_vid_black(hdmi, false);
1134 mtk_hdmi_hw_aud_unmute(hdmi);
1135 mtk_hdmi_hw_send_av_unmute(hdmi);
1136
1137 return 0;
1138}
1139
1140static const char * const mtk_hdmi_clk_names[MTK_HDMI_CLK_COUNT] = {
1141 [MTK_HDMI_CLK_HDMI_PIXEL] = "pixel",
1142 [MTK_HDMI_CLK_HDMI_PLL] = "pll",
1143 [MTK_HDMI_CLK_AUD_BCLK] = "bclk",
1144 [MTK_HDMI_CLK_AUD_SPDIF] = "spdif",
1145};
1146
1147static int mtk_hdmi_get_all_clk(struct mtk_hdmi *hdmi,
1148 struct device_node *np)
1149{
1150 int i;
1151
1152 for (i = 0; i < ARRAY_SIZE(mtk_hdmi_clk_names); i++) {
1153 hdmi->clk[i] = of_clk_get_by_name(np,
1154 mtk_hdmi_clk_names[i]);
1155 if (IS_ERR(hdmi->clk[i]))
1156 return PTR_ERR(hdmi->clk[i]);
1157 }
1158 return 0;
1159}
1160
1161static int mtk_hdmi_clk_enable_audio(struct mtk_hdmi *hdmi)
1162{
1163 int ret;
1164
1165 ret = clk_prepare_enable(hdmi->clk[MTK_HDMI_CLK_AUD_BCLK]);
1166 if (ret)
1167 return ret;
1168
1169 ret = clk_prepare_enable(hdmi->clk[MTK_HDMI_CLK_AUD_SPDIF]);
1170 if (ret)
1171 goto err;
1172
1173 return 0;
1174err:
1175 clk_disable_unprepare(hdmi->clk[MTK_HDMI_CLK_AUD_BCLK]);
1176 return ret;
1177}
1178
1179static void mtk_hdmi_clk_disable_audio(struct mtk_hdmi *hdmi)
1180{
1181 clk_disable_unprepare(hdmi->clk[MTK_HDMI_CLK_AUD_BCLK]);
1182 clk_disable_unprepare(hdmi->clk[MTK_HDMI_CLK_AUD_SPDIF]);
1183}
1184
1185static enum drm_connector_status
1186mtk_hdmi_update_plugged_status(struct mtk_hdmi *hdmi)
1187{
1188 bool connected;
1189
1190 mutex_lock(&hdmi->update_plugged_status_lock);
1191 connected = mtk_cec_hpd_high(hdmi->cec_dev);
1192 if (hdmi->plugged_cb && hdmi->codec_dev)
1193 hdmi->plugged_cb(hdmi->codec_dev, connected);
1194 mutex_unlock(&hdmi->update_plugged_status_lock);
1195
1196 return connected ?
1197 connector_status_connected : connector_status_disconnected;
1198}
1199
1200static enum drm_connector_status mtk_hdmi_detect(struct mtk_hdmi *hdmi)
1201{
1202 return mtk_hdmi_update_plugged_status(hdmi);
1203}
1204
1205static enum drm_mode_status
1206mtk_hdmi_bridge_mode_valid(struct drm_bridge *bridge,
1207 const struct drm_display_info *info,
1208 const struct drm_display_mode *mode)
1209{
1210 struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
1211
1212 dev_dbg(hdmi->dev, "xres=%d, yres=%d, refresh=%d, intl=%d clock=%d\n",
1213 mode->hdisplay, mode->vdisplay, drm_mode_vrefresh(mode),
1214 !!(mode->flags & DRM_MODE_FLAG_INTERLACE), mode->clock * 1000);
1215
1216 if (hdmi->conf) {
1217 if (hdmi->conf->cea_modes_only && !drm_match_cea_mode(mode))
1218 return MODE_BAD;
1219
1220 if (hdmi->conf->max_mode_clock &&
1221 mode->clock > hdmi->conf->max_mode_clock)
1222 return MODE_CLOCK_HIGH;
1223 }
1224
1225 if (mode->clock < 27000)
1226 return MODE_CLOCK_LOW;
1227 if (mode->clock > 297000)
1228 return MODE_CLOCK_HIGH;
1229
1230 return drm_mode_validate_size(mode, 0x1fff, 0x1fff);
1231}
1232
1233static void mtk_hdmi_hpd_event(bool hpd, struct device *dev)
1234{
1235 struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
1236
1237 if (hdmi && hdmi->bridge.encoder && hdmi->bridge.encoder->dev) {
1238 static enum drm_connector_status status;
1239
1240 status = mtk_hdmi_detect(hdmi);
1241 drm_helper_hpd_irq_event(hdmi->bridge.encoder->dev);
1242 drm_bridge_hpd_notify(&hdmi->bridge, status);
1243 }
1244}
1245
1246/*
1247 * Bridge callbacks
1248 */
1249
1250static enum drm_connector_status mtk_hdmi_bridge_detect(struct drm_bridge *bridge)
1251{
1252 struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
1253
1254 return mtk_hdmi_detect(hdmi);
1255}
1256
1257static const struct drm_edid *mtk_hdmi_bridge_edid_read(struct drm_bridge *bridge,
1258 struct drm_connector *connector)
1259{
1260 struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
1261 const struct drm_edid *drm_edid;
1262
1263 if (!hdmi->ddc_adpt)
1264 return NULL;
1265 drm_edid = drm_edid_read_ddc(connector, hdmi->ddc_adpt);
1266 if (drm_edid) {
1267 /*
1268 * FIXME: This should use !connector->display_info.has_audio (or
1269 * !connector->display_info.is_hdmi) from a path that has read
1270 * the EDID and called drm_edid_connector_update().
1271 */
1272 const struct edid *edid = drm_edid_raw(drm_edid);
1273
1274 hdmi->dvi_mode = !drm_detect_monitor_audio(edid);
1275 }
1276
1277 return drm_edid;
1278}
1279
1280static int mtk_hdmi_bridge_attach(struct drm_bridge *bridge,
1281 enum drm_bridge_attach_flags flags)
1282{
1283 struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
1284 int ret;
1285
1286 if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) {
1287 DRM_ERROR("%s: The flag DRM_BRIDGE_ATTACH_NO_CONNECTOR must be supplied\n",
1288 __func__);
1289 return -EINVAL;
1290 }
1291
1292 if (hdmi->next_bridge) {
1293 ret = drm_bridge_attach(bridge->encoder, hdmi->next_bridge,
1294 bridge, flags);
1295 if (ret)
1296 return ret;
1297 }
1298
1299 mtk_cec_set_hpd_event(hdmi->cec_dev, mtk_hdmi_hpd_event, hdmi->dev);
1300
1301 return 0;
1302}
1303
1304static bool mtk_hdmi_bridge_mode_fixup(struct drm_bridge *bridge,
1305 const struct drm_display_mode *mode,
1306 struct drm_display_mode *adjusted_mode)
1307{
1308 return true;
1309}
1310
1311static void mtk_hdmi_bridge_atomic_disable(struct drm_bridge *bridge,
1312 struct drm_bridge_state *old_bridge_state)
1313{
1314 struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
1315
1316 if (!hdmi->enabled)
1317 return;
1318
1319 phy_power_off(hdmi->phy);
1320 clk_disable_unprepare(hdmi->clk[MTK_HDMI_CLK_HDMI_PIXEL]);
1321 clk_disable_unprepare(hdmi->clk[MTK_HDMI_CLK_HDMI_PLL]);
1322
1323 hdmi->curr_conn = NULL;
1324
1325 hdmi->enabled = false;
1326}
1327
1328static void mtk_hdmi_bridge_atomic_post_disable(struct drm_bridge *bridge,
1329 struct drm_bridge_state *old_state)
1330{
1331 struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
1332
1333 if (!hdmi->powered)
1334 return;
1335
1336 mtk_hdmi_hw_1p4_version_enable(hdmi, true);
1337 mtk_hdmi_hw_make_reg_writable(hdmi, false);
1338
1339 hdmi->powered = false;
1340}
1341
1342static void mtk_hdmi_bridge_mode_set(struct drm_bridge *bridge,
1343 const struct drm_display_mode *mode,
1344 const struct drm_display_mode *adjusted_mode)
1345{
1346 struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
1347
1348 dev_dbg(hdmi->dev, "cur info: name:%s, hdisplay:%d\n",
1349 adjusted_mode->name, adjusted_mode->hdisplay);
1350 dev_dbg(hdmi->dev, "hsync_start:%d,hsync_end:%d, htotal:%d",
1351 adjusted_mode->hsync_start, adjusted_mode->hsync_end,
1352 adjusted_mode->htotal);
1353 dev_dbg(hdmi->dev, "hskew:%d, vdisplay:%d\n",
1354 adjusted_mode->hskew, adjusted_mode->vdisplay);
1355 dev_dbg(hdmi->dev, "vsync_start:%d, vsync_end:%d, vtotal:%d",
1356 adjusted_mode->vsync_start, adjusted_mode->vsync_end,
1357 adjusted_mode->vtotal);
1358 dev_dbg(hdmi->dev, "vscan:%d, flag:%d\n",
1359 adjusted_mode->vscan, adjusted_mode->flags);
1360
1361 drm_mode_copy(&hdmi->mode, adjusted_mode);
1362}
1363
1364static void mtk_hdmi_bridge_atomic_pre_enable(struct drm_bridge *bridge,
1365 struct drm_bridge_state *old_state)
1366{
1367 struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
1368
1369 mtk_hdmi_hw_make_reg_writable(hdmi, true);
1370 mtk_hdmi_hw_1p4_version_enable(hdmi, true);
1371
1372 hdmi->powered = true;
1373}
1374
1375static void mtk_hdmi_send_infoframe(struct mtk_hdmi *hdmi,
1376 struct drm_display_mode *mode)
1377{
1378 mtk_hdmi_setup_audio_infoframe(hdmi);
1379 mtk_hdmi_setup_avi_infoframe(hdmi, mode);
1380 mtk_hdmi_setup_spd_infoframe(hdmi, "mediatek", "On-chip HDMI");
1381 if (mode->flags & DRM_MODE_FLAG_3D_MASK)
1382 mtk_hdmi_setup_vendor_specific_infoframe(hdmi, mode);
1383}
1384
1385static void mtk_hdmi_bridge_atomic_enable(struct drm_bridge *bridge,
1386 struct drm_bridge_state *old_state)
1387{
1388 struct drm_atomic_state *state = old_state->base.state;
1389 struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
1390
1391 /* Retrieve the connector through the atomic state. */
1392 hdmi->curr_conn = drm_atomic_get_new_connector_for_encoder(state,
1393 bridge->encoder);
1394
1395 mtk_hdmi_output_set_display_mode(hdmi, &hdmi->mode);
1396 clk_prepare_enable(hdmi->clk[MTK_HDMI_CLK_HDMI_PLL]);
1397 clk_prepare_enable(hdmi->clk[MTK_HDMI_CLK_HDMI_PIXEL]);
1398 phy_power_on(hdmi->phy);
1399 mtk_hdmi_send_infoframe(hdmi, &hdmi->mode);
1400
1401 hdmi->enabled = true;
1402}
1403
1404static const struct drm_bridge_funcs mtk_hdmi_bridge_funcs = {
1405 .mode_valid = mtk_hdmi_bridge_mode_valid,
1406 .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
1407 .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
1408 .atomic_reset = drm_atomic_helper_bridge_reset,
1409 .attach = mtk_hdmi_bridge_attach,
1410 .mode_fixup = mtk_hdmi_bridge_mode_fixup,
1411 .atomic_disable = mtk_hdmi_bridge_atomic_disable,
1412 .atomic_post_disable = mtk_hdmi_bridge_atomic_post_disable,
1413 .mode_set = mtk_hdmi_bridge_mode_set,
1414 .atomic_pre_enable = mtk_hdmi_bridge_atomic_pre_enable,
1415 .atomic_enable = mtk_hdmi_bridge_atomic_enable,
1416 .detect = mtk_hdmi_bridge_detect,
1417 .edid_read = mtk_hdmi_bridge_edid_read,
1418};
1419
1420static int mtk_hdmi_dt_parse_pdata(struct mtk_hdmi *hdmi,
1421 struct platform_device *pdev)
1422{
1423 struct device *dev = &pdev->dev;
1424 struct device_node *np = dev->of_node;
1425 struct device_node *cec_np, *remote, *i2c_np;
1426 struct platform_device *cec_pdev;
1427 struct regmap *regmap;
1428 struct resource *mem;
1429 int ret;
1430
1431 ret = mtk_hdmi_get_all_clk(hdmi, np);
1432 if (ret) {
1433 if (ret != -EPROBE_DEFER)
1434 dev_err(dev, "Failed to get clocks: %d\n", ret);
1435
1436 return ret;
1437 }
1438
1439 /* The CEC module handles HDMI hotplug detection */
1440 cec_np = of_get_compatible_child(np->parent, "mediatek,mt8173-cec");
1441 if (!cec_np) {
1442 dev_err(dev, "Failed to find CEC node\n");
1443 return -EINVAL;
1444 }
1445
1446 cec_pdev = of_find_device_by_node(cec_np);
1447 if (!cec_pdev) {
1448 dev_err(hdmi->dev, "Waiting for CEC device %pOF\n",
1449 cec_np);
1450 of_node_put(cec_np);
1451 return -EPROBE_DEFER;
1452 }
1453 of_node_put(cec_np);
1454 hdmi->cec_dev = &cec_pdev->dev;
1455
1456 /*
1457 * The mediatek,syscon-hdmi property contains a phandle link to the
1458 * MMSYS_CONFIG device and the register offset of the HDMI_SYS_CFG
1459 * registers it contains.
1460 */
1461 regmap = syscon_regmap_lookup_by_phandle(np, "mediatek,syscon-hdmi");
1462 ret = of_property_read_u32_index(np, "mediatek,syscon-hdmi", 1,
1463 &hdmi->sys_offset);
1464 if (IS_ERR(regmap))
1465 ret = PTR_ERR(regmap);
1466 if (ret) {
1467 dev_err(dev,
1468 "Failed to get system configuration registers: %d\n",
1469 ret);
1470 goto put_device;
1471 }
1472 hdmi->sys_regmap = regmap;
1473
1474 mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1475 hdmi->regs = devm_ioremap_resource(dev, mem);
1476 if (IS_ERR(hdmi->regs)) {
1477 ret = PTR_ERR(hdmi->regs);
1478 goto put_device;
1479 }
1480
1481 remote = of_graph_get_remote_node(np, 1, 0);
1482 if (!remote) {
1483 ret = -EINVAL;
1484 goto put_device;
1485 }
1486
1487 if (!of_device_is_compatible(remote, "hdmi-connector")) {
1488 hdmi->next_bridge = of_drm_find_bridge(remote);
1489 if (!hdmi->next_bridge) {
1490 dev_err(dev, "Waiting for external bridge\n");
1491 of_node_put(remote);
1492 ret = -EPROBE_DEFER;
1493 goto put_device;
1494 }
1495 }
1496
1497 i2c_np = of_parse_phandle(remote, "ddc-i2c-bus", 0);
1498 if (!i2c_np) {
1499 dev_err(dev, "Failed to find ddc-i2c-bus node in %pOF\n",
1500 remote);
1501 of_node_put(remote);
1502 ret = -EINVAL;
1503 goto put_device;
1504 }
1505 of_node_put(remote);
1506
1507 hdmi->ddc_adpt = of_find_i2c_adapter_by_node(i2c_np);
1508 of_node_put(i2c_np);
1509 if (!hdmi->ddc_adpt) {
1510 dev_err(dev, "Failed to get ddc i2c adapter by node\n");
1511 ret = -EINVAL;
1512 goto put_device;
1513 }
1514
1515 return 0;
1516put_device:
1517 put_device(hdmi->cec_dev);
1518 return ret;
1519}
1520
1521/*
1522 * HDMI audio codec callbacks
1523 */
1524
1525static int mtk_hdmi_audio_hw_params(struct device *dev, void *data,
1526 struct hdmi_codec_daifmt *daifmt,
1527 struct hdmi_codec_params *params)
1528{
1529 struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
1530 struct hdmi_audio_param hdmi_params;
1531 unsigned int chan = params->cea.channels;
1532
1533 dev_dbg(hdmi->dev, "%s: %u Hz, %d bit, %d channels\n", __func__,
1534 params->sample_rate, params->sample_width, chan);
1535
1536 if (!hdmi->bridge.encoder)
1537 return -ENODEV;
1538
1539 switch (chan) {
1540 case 2:
1541 hdmi_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_2_0;
1542 break;
1543 case 4:
1544 hdmi_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_4_0;
1545 break;
1546 case 6:
1547 hdmi_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_5_1;
1548 break;
1549 case 8:
1550 hdmi_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_7_1;
1551 break;
1552 default:
1553 dev_err(hdmi->dev, "channel[%d] not supported!\n", chan);
1554 return -EINVAL;
1555 }
1556
1557 switch (params->sample_rate) {
1558 case 32000:
1559 case 44100:
1560 case 48000:
1561 case 88200:
1562 case 96000:
1563 case 176400:
1564 case 192000:
1565 break;
1566 default:
1567 dev_err(hdmi->dev, "rate[%d] not supported!\n",
1568 params->sample_rate);
1569 return -EINVAL;
1570 }
1571
1572 switch (daifmt->fmt) {
1573 case HDMI_I2S:
1574 hdmi_params.aud_codec = HDMI_AUDIO_CODING_TYPE_PCM;
1575 hdmi_params.aud_sampe_size = HDMI_AUDIO_SAMPLE_SIZE_16;
1576 hdmi_params.aud_input_type = HDMI_AUD_INPUT_I2S;
1577 hdmi_params.aud_i2s_fmt = HDMI_I2S_MODE_I2S_24BIT;
1578 hdmi_params.aud_mclk = HDMI_AUD_MCLK_128FS;
1579 break;
1580 case HDMI_SPDIF:
1581 hdmi_params.aud_codec = HDMI_AUDIO_CODING_TYPE_PCM;
1582 hdmi_params.aud_sampe_size = HDMI_AUDIO_SAMPLE_SIZE_16;
1583 hdmi_params.aud_input_type = HDMI_AUD_INPUT_SPDIF;
1584 break;
1585 default:
1586 dev_err(hdmi->dev, "%s: Invalid DAI format %d\n", __func__,
1587 daifmt->fmt);
1588 return -EINVAL;
1589 }
1590
1591 memcpy(&hdmi_params.codec_params, params,
1592 sizeof(hdmi_params.codec_params));
1593
1594 mtk_hdmi_audio_set_param(hdmi, &hdmi_params);
1595
1596 return 0;
1597}
1598
1599static int mtk_hdmi_audio_startup(struct device *dev, void *data)
1600{
1601 struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
1602
1603 mtk_hdmi_audio_enable(hdmi);
1604
1605 return 0;
1606}
1607
1608static void mtk_hdmi_audio_shutdown(struct device *dev, void *data)
1609{
1610 struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
1611
1612 mtk_hdmi_audio_disable(hdmi);
1613}
1614
1615static int
1616mtk_hdmi_audio_mute(struct device *dev, void *data,
1617 bool enable, int direction)
1618{
1619 struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
1620
1621 if (enable)
1622 mtk_hdmi_hw_aud_mute(hdmi);
1623 else
1624 mtk_hdmi_hw_aud_unmute(hdmi);
1625
1626 return 0;
1627}
1628
1629static int mtk_hdmi_audio_get_eld(struct device *dev, void *data, uint8_t *buf, size_t len)
1630{
1631 struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
1632
1633 if (hdmi->enabled)
1634 memcpy(buf, hdmi->curr_conn->eld, min(sizeof(hdmi->curr_conn->eld), len));
1635 else
1636 memset(buf, 0, len);
1637 return 0;
1638}
1639
1640static int mtk_hdmi_audio_hook_plugged_cb(struct device *dev, void *data,
1641 hdmi_codec_plugged_cb fn,
1642 struct device *codec_dev)
1643{
1644 struct mtk_hdmi *hdmi = data;
1645
1646 mutex_lock(&hdmi->update_plugged_status_lock);
1647 hdmi->plugged_cb = fn;
1648 hdmi->codec_dev = codec_dev;
1649 mutex_unlock(&hdmi->update_plugged_status_lock);
1650
1651 mtk_hdmi_update_plugged_status(hdmi);
1652
1653 return 0;
1654}
1655
1656static const struct hdmi_codec_ops mtk_hdmi_audio_codec_ops = {
1657 .hw_params = mtk_hdmi_audio_hw_params,
1658 .audio_startup = mtk_hdmi_audio_startup,
1659 .audio_shutdown = mtk_hdmi_audio_shutdown,
1660 .mute_stream = mtk_hdmi_audio_mute,
1661 .get_eld = mtk_hdmi_audio_get_eld,
1662 .hook_plugged_cb = mtk_hdmi_audio_hook_plugged_cb,
1663 .no_capture_mute = 1,
1664};
1665
1666static int mtk_hdmi_register_audio_driver(struct device *dev)
1667{
1668 struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
1669 struct hdmi_codec_pdata codec_data = {
1670 .ops = &mtk_hdmi_audio_codec_ops,
1671 .max_i2s_channels = 2,
1672 .i2s = 1,
1673 .data = hdmi,
1674 };
1675 struct platform_device *pdev;
1676
1677 pdev = platform_device_register_data(dev, HDMI_CODEC_DRV_NAME,
1678 PLATFORM_DEVID_AUTO, &codec_data,
1679 sizeof(codec_data));
1680 if (IS_ERR(pdev))
1681 return PTR_ERR(pdev);
1682
1683 DRM_INFO("%s driver bound to HDMI\n", HDMI_CODEC_DRV_NAME);
1684 return 0;
1685}
1686
1687static int mtk_hdmi_probe(struct platform_device *pdev)
1688{
1689 struct mtk_hdmi *hdmi;
1690 struct device *dev = &pdev->dev;
1691 int ret;
1692
1693 hdmi = devm_kzalloc(dev, sizeof(*hdmi), GFP_KERNEL);
1694 if (!hdmi)
1695 return -ENOMEM;
1696
1697 hdmi->dev = dev;
1698 hdmi->conf = of_device_get_match_data(dev);
1699
1700 ret = mtk_hdmi_dt_parse_pdata(hdmi, pdev);
1701 if (ret)
1702 return ret;
1703
1704 hdmi->phy = devm_phy_get(dev, "hdmi");
1705 if (IS_ERR(hdmi->phy))
1706 return dev_err_probe(dev, PTR_ERR(hdmi->phy),
1707 "Failed to get HDMI PHY\n");
1708
1709 mutex_init(&hdmi->update_plugged_status_lock);
1710 platform_set_drvdata(pdev, hdmi);
1711
1712 ret = mtk_hdmi_output_init(hdmi);
1713 if (ret)
1714 return dev_err_probe(dev, ret,
1715 "Failed to initialize hdmi output\n");
1716
1717 ret = mtk_hdmi_register_audio_driver(dev);
1718 if (ret)
1719 return dev_err_probe(dev, ret,
1720 "Failed to register audio driver\n");
1721
1722 hdmi->bridge.funcs = &mtk_hdmi_bridge_funcs;
1723 hdmi->bridge.of_node = pdev->dev.of_node;
1724 hdmi->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID
1725 | DRM_BRIDGE_OP_HPD;
1726 hdmi->bridge.type = DRM_MODE_CONNECTOR_HDMIA;
1727 drm_bridge_add(&hdmi->bridge);
1728
1729 ret = mtk_hdmi_clk_enable_audio(hdmi);
1730 if (ret) {
1731 drm_bridge_remove(&hdmi->bridge);
1732 return dev_err_probe(dev, ret,
1733 "Failed to enable audio clocks\n");
1734 }
1735
1736 return 0;
1737}
1738
1739static void mtk_hdmi_remove(struct platform_device *pdev)
1740{
1741 struct mtk_hdmi *hdmi = platform_get_drvdata(pdev);
1742
1743 drm_bridge_remove(&hdmi->bridge);
1744 mtk_hdmi_clk_disable_audio(hdmi);
1745}
1746
1747#ifdef CONFIG_PM_SLEEP
1748static int mtk_hdmi_suspend(struct device *dev)
1749{
1750 struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
1751
1752 mtk_hdmi_clk_disable_audio(hdmi);
1753
1754 return 0;
1755}
1756
1757static int mtk_hdmi_resume(struct device *dev)
1758{
1759 struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
1760 int ret = 0;
1761
1762 ret = mtk_hdmi_clk_enable_audio(hdmi);
1763 if (ret) {
1764 dev_err(dev, "hdmi resume failed!\n");
1765 return ret;
1766 }
1767
1768 return 0;
1769}
1770#endif
1771static SIMPLE_DEV_PM_OPS(mtk_hdmi_pm_ops,
1772 mtk_hdmi_suspend, mtk_hdmi_resume);
1773
1774static const struct mtk_hdmi_conf mtk_hdmi_conf_mt2701 = {
1775 .tz_disabled = true,
1776};
1777
1778static const struct mtk_hdmi_conf mtk_hdmi_conf_mt8167 = {
1779 .max_mode_clock = 148500,
1780 .cea_modes_only = true,
1781};
1782
1783static const struct of_device_id mtk_hdmi_of_ids[] = {
1784 { .compatible = "mediatek,mt2701-hdmi",
1785 .data = &mtk_hdmi_conf_mt2701,
1786 },
1787 { .compatible = "mediatek,mt8167-hdmi",
1788 .data = &mtk_hdmi_conf_mt8167,
1789 },
1790 { .compatible = "mediatek,mt8173-hdmi",
1791 },
1792 {}
1793};
1794MODULE_DEVICE_TABLE(of, mtk_hdmi_of_ids);
1795
1796static struct platform_driver mtk_hdmi_driver = {
1797 .probe = mtk_hdmi_probe,
1798 .remove = mtk_hdmi_remove,
1799 .driver = {
1800 .name = "mediatek-drm-hdmi",
1801 .of_match_table = mtk_hdmi_of_ids,
1802 .pm = &mtk_hdmi_pm_ops,
1803 },
1804};
1805
1806static struct platform_driver * const mtk_hdmi_drivers[] = {
1807 &mtk_hdmi_ddc_driver,
1808 &mtk_cec_driver,
1809 &mtk_hdmi_driver,
1810};
1811
1812static int __init mtk_hdmitx_init(void)
1813{
1814 return platform_register_drivers(mtk_hdmi_drivers,
1815 ARRAY_SIZE(mtk_hdmi_drivers));
1816}
1817
1818static void __exit mtk_hdmitx_exit(void)
1819{
1820 platform_unregister_drivers(mtk_hdmi_drivers,
1821 ARRAY_SIZE(mtk_hdmi_drivers));
1822}
1823
1824module_init(mtk_hdmitx_init);
1825module_exit(mtk_hdmitx_exit);
1826
1827MODULE_AUTHOR("Jie Qiu <jie.qiu@mediatek.com>");
1828MODULE_DESCRIPTION("MediaTek HDMI Driver");
1829MODULE_LICENSE("GPL v2");
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
41enum 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
49enum hdmi_aud_input_type {
50 HDMI_AUD_INPUT_I2S = 0,
51 HDMI_AUD_INPUT_SPDIF,
52};
53
54enum 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
63enum 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
73enum 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
132enum 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
140struct 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
150struct mtk_hdmi {
151 struct drm_bridge bridge;
152 struct drm_connector conn;
153 struct device *dev;
154 struct phy *phy;
155 struct device *cec_dev;
156 struct i2c_adapter *ddc_adpt;
157 struct clk *clk[MTK_HDMI_CLK_COUNT];
158 struct drm_display_mode mode;
159 bool dvi_mode;
160 u32 min_clock;
161 u32 max_clock;
162 u32 max_hdisplay;
163 u32 max_vdisplay;
164 u32 ibias;
165 u32 ibias_up;
166 struct regmap *sys_regmap;
167 unsigned int sys_offset;
168 void __iomem *regs;
169 enum hdmi_colorspace csp;
170 struct hdmi_audio_param aud_param;
171 bool audio_enable;
172 bool powered;
173 bool enabled;
174};
175
176static inline struct mtk_hdmi *hdmi_ctx_from_bridge(struct drm_bridge *b)
177{
178 return container_of(b, struct mtk_hdmi, bridge);
179}
180
181static inline struct mtk_hdmi *hdmi_ctx_from_conn(struct drm_connector *c)
182{
183 return container_of(c, struct mtk_hdmi, conn);
184}
185
186static u32 mtk_hdmi_read(struct mtk_hdmi *hdmi, u32 offset)
187{
188 return readl(hdmi->regs + offset);
189}
190
191static void mtk_hdmi_write(struct mtk_hdmi *hdmi, u32 offset, u32 val)
192{
193 writel(val, hdmi->regs + offset);
194}
195
196static void mtk_hdmi_clear_bits(struct mtk_hdmi *hdmi, u32 offset, u32 bits)
197{
198 void __iomem *reg = hdmi->regs + offset;
199 u32 tmp;
200
201 tmp = readl(reg);
202 tmp &= ~bits;
203 writel(tmp, reg);
204}
205
206static void mtk_hdmi_set_bits(struct mtk_hdmi *hdmi, u32 offset, u32 bits)
207{
208 void __iomem *reg = hdmi->regs + offset;
209 u32 tmp;
210
211 tmp = readl(reg);
212 tmp |= bits;
213 writel(tmp, reg);
214}
215
216static void mtk_hdmi_mask(struct mtk_hdmi *hdmi, u32 offset, u32 val, u32 mask)
217{
218 void __iomem *reg = hdmi->regs + offset;
219 u32 tmp;
220
221 tmp = readl(reg);
222 tmp = (tmp & ~mask) | (val & mask);
223 writel(tmp, reg);
224}
225
226static void mtk_hdmi_hw_vid_black(struct mtk_hdmi *hdmi, bool black)
227{
228 mtk_hdmi_mask(hdmi, VIDEO_CFG_4, black ? GEN_RGB : NORMAL_PATH,
229 VIDEO_SOURCE_SEL);
230}
231
232static void mtk_hdmi_hw_make_reg_writable(struct mtk_hdmi *hdmi, bool enable)
233{
234 struct arm_smccc_res res;
235
236 /*
237 * MT8173 HDMI hardware has an output control bit to enable/disable HDMI
238 * output. This bit can only be controlled in ARM supervisor mode.
239 * The ARM trusted firmware provides an API for the HDMI driver to set
240 * this control bit to enable HDMI output in supervisor mode.
241 */
242 arm_smccc_smc(MTK_SIP_SET_AUTHORIZED_SECURE_REG, 0x14000904, 0x80000000,
243 0, 0, 0, 0, 0, &res);
244
245 regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG20,
246 HDMI_PCLK_FREE_RUN, enable ? HDMI_PCLK_FREE_RUN : 0);
247 regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG1C,
248 HDMI_ON | ANLG_ON, enable ? (HDMI_ON | ANLG_ON) : 0);
249}
250
251static void mtk_hdmi_hw_1p4_version_enable(struct mtk_hdmi *hdmi, bool enable)
252{
253 regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG20,
254 HDMI2P0_EN, enable ? 0 : HDMI2P0_EN);
255}
256
257static void mtk_hdmi_hw_aud_mute(struct mtk_hdmi *hdmi)
258{
259 mtk_hdmi_set_bits(hdmi, GRL_AUDIO_CFG, AUDIO_ZERO);
260}
261
262static void mtk_hdmi_hw_aud_unmute(struct mtk_hdmi *hdmi)
263{
264 mtk_hdmi_clear_bits(hdmi, GRL_AUDIO_CFG, AUDIO_ZERO);
265}
266
267static void mtk_hdmi_hw_reset(struct mtk_hdmi *hdmi)
268{
269 regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG1C,
270 HDMI_RST, HDMI_RST);
271 regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG1C,
272 HDMI_RST, 0);
273 mtk_hdmi_clear_bits(hdmi, GRL_CFG3, CFG3_CONTROL_PACKET_DELAY);
274 regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG1C,
275 ANLG_ON, ANLG_ON);
276}
277
278static void mtk_hdmi_hw_enable_notice(struct mtk_hdmi *hdmi, bool enable_notice)
279{
280 mtk_hdmi_mask(hdmi, GRL_CFG2, enable_notice ? CFG2_NOTICE_EN : 0,
281 CFG2_NOTICE_EN);
282}
283
284static void mtk_hdmi_hw_write_int_mask(struct mtk_hdmi *hdmi, u32 int_mask)
285{
286 mtk_hdmi_write(hdmi, GRL_INT_MASK, int_mask);
287}
288
289static void mtk_hdmi_hw_enable_dvi_mode(struct mtk_hdmi *hdmi, bool enable)
290{
291 mtk_hdmi_mask(hdmi, GRL_CFG1, enable ? CFG1_DVI : 0, CFG1_DVI);
292}
293
294static void mtk_hdmi_hw_send_info_frame(struct mtk_hdmi *hdmi, u8 *buffer,
295 u8 len)
296{
297 u32 ctrl_reg = GRL_CTRL;
298 int i;
299 u8 *frame_data;
300 enum hdmi_infoframe_type frame_type;
301 u8 frame_ver;
302 u8 frame_len;
303 u8 checksum;
304 int ctrl_frame_en = 0;
305
306 frame_type = *buffer;
307 buffer += 1;
308 frame_ver = *buffer;
309 buffer += 1;
310 frame_len = *buffer;
311 buffer += 1;
312 checksum = *buffer;
313 buffer += 1;
314 frame_data = buffer;
315
316 dev_dbg(hdmi->dev,
317 "frame_type:0x%x,frame_ver:0x%x,frame_len:0x%x,checksum:0x%x\n",
318 frame_type, frame_ver, frame_len, checksum);
319
320 switch (frame_type) {
321 case HDMI_INFOFRAME_TYPE_AVI:
322 ctrl_frame_en = CTRL_AVI_EN;
323 ctrl_reg = GRL_CTRL;
324 break;
325 case HDMI_INFOFRAME_TYPE_SPD:
326 ctrl_frame_en = CTRL_SPD_EN;
327 ctrl_reg = GRL_CTRL;
328 break;
329 case HDMI_INFOFRAME_TYPE_AUDIO:
330 ctrl_frame_en = CTRL_AUDIO_EN;
331 ctrl_reg = GRL_CTRL;
332 break;
333 case HDMI_INFOFRAME_TYPE_VENDOR:
334 ctrl_frame_en = VS_EN;
335 ctrl_reg = GRL_ACP_ISRC_CTRL;
336 break;
337 }
338 mtk_hdmi_clear_bits(hdmi, ctrl_reg, ctrl_frame_en);
339 mtk_hdmi_write(hdmi, GRL_INFOFRM_TYPE, frame_type);
340 mtk_hdmi_write(hdmi, GRL_INFOFRM_VER, frame_ver);
341 mtk_hdmi_write(hdmi, GRL_INFOFRM_LNG, frame_len);
342
343 mtk_hdmi_write(hdmi, GRL_IFM_PORT, checksum);
344 for (i = 0; i < frame_len; i++)
345 mtk_hdmi_write(hdmi, GRL_IFM_PORT, frame_data[i]);
346
347 mtk_hdmi_set_bits(hdmi, ctrl_reg, ctrl_frame_en);
348}
349
350static void mtk_hdmi_hw_send_aud_packet(struct mtk_hdmi *hdmi, bool enable)
351{
352 mtk_hdmi_mask(hdmi, GRL_SHIFT_R2, enable ? 0 : AUDIO_PACKET_OFF,
353 AUDIO_PACKET_OFF);
354}
355
356static void mtk_hdmi_hw_config_sys(struct mtk_hdmi *hdmi)
357{
358 regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG20,
359 HDMI_OUT_FIFO_EN | MHL_MODE_ON, 0);
360 usleep_range(2000, 4000);
361 regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG20,
362 HDMI_OUT_FIFO_EN | MHL_MODE_ON, HDMI_OUT_FIFO_EN);
363}
364
365static void mtk_hdmi_hw_set_deep_color_mode(struct mtk_hdmi *hdmi)
366{
367 regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG20,
368 DEEP_COLOR_MODE_MASK | DEEP_COLOR_EN,
369 COLOR_8BIT_MODE);
370}
371
372static void mtk_hdmi_hw_send_av_mute(struct mtk_hdmi *hdmi)
373{
374 mtk_hdmi_clear_bits(hdmi, GRL_CFG4, CTRL_AVMUTE);
375 usleep_range(2000, 4000);
376 mtk_hdmi_set_bits(hdmi, GRL_CFG4, CTRL_AVMUTE);
377}
378
379static void mtk_hdmi_hw_send_av_unmute(struct mtk_hdmi *hdmi)
380{
381 mtk_hdmi_mask(hdmi, GRL_CFG4, CFG4_AV_UNMUTE_EN,
382 CFG4_AV_UNMUTE_EN | CFG4_AV_UNMUTE_SET);
383 usleep_range(2000, 4000);
384 mtk_hdmi_mask(hdmi, GRL_CFG4, CFG4_AV_UNMUTE_SET,
385 CFG4_AV_UNMUTE_EN | CFG4_AV_UNMUTE_SET);
386}
387
388static void mtk_hdmi_hw_ncts_enable(struct mtk_hdmi *hdmi, bool on)
389{
390 mtk_hdmi_mask(hdmi, GRL_CTS_CTRL, on ? 0 : CTS_CTRL_SOFT,
391 CTS_CTRL_SOFT);
392}
393
394static void mtk_hdmi_hw_ncts_auto_write_enable(struct mtk_hdmi *hdmi,
395 bool enable)
396{
397 mtk_hdmi_mask(hdmi, GRL_CTS_CTRL, enable ? NCTS_WRI_ANYTIME : 0,
398 NCTS_WRI_ANYTIME);
399}
400
401static void mtk_hdmi_hw_msic_setting(struct mtk_hdmi *hdmi,
402 struct drm_display_mode *mode)
403{
404 mtk_hdmi_clear_bits(hdmi, GRL_CFG4, CFG4_MHL_MODE);
405
406 if (mode->flags & DRM_MODE_FLAG_INTERLACE &&
407 mode->clock == 74250 &&
408 mode->vdisplay == 1080)
409 mtk_hdmi_clear_bits(hdmi, GRL_CFG2, CFG2_MHL_DE_SEL);
410 else
411 mtk_hdmi_set_bits(hdmi, GRL_CFG2, CFG2_MHL_DE_SEL);
412}
413
414static void mtk_hdmi_hw_aud_set_channel_swap(struct mtk_hdmi *hdmi,
415 enum hdmi_aud_channel_swap_type swap)
416{
417 u8 swap_bit;
418
419 switch (swap) {
420 case HDMI_AUD_SWAP_LR:
421 swap_bit = LR_SWAP;
422 break;
423 case HDMI_AUD_SWAP_LFE_CC:
424 swap_bit = LFE_CC_SWAP;
425 break;
426 case HDMI_AUD_SWAP_LSRS:
427 swap_bit = LSRS_SWAP;
428 break;
429 case HDMI_AUD_SWAP_RLS_RRS:
430 swap_bit = RLS_RRS_SWAP;
431 break;
432 case HDMI_AUD_SWAP_LR_STATUS:
433 swap_bit = LR_STATUS_SWAP;
434 break;
435 default:
436 swap_bit = LFE_CC_SWAP;
437 break;
438 }
439 mtk_hdmi_mask(hdmi, GRL_CH_SWAP, swap_bit, 0xff);
440}
441
442static void mtk_hdmi_hw_aud_set_bit_num(struct mtk_hdmi *hdmi,
443 enum hdmi_audio_sample_size bit_num)
444{
445 u32 val;
446
447 switch (bit_num) {
448 case HDMI_AUDIO_SAMPLE_SIZE_16:
449 val = AOUT_16BIT;
450 break;
451 case HDMI_AUDIO_SAMPLE_SIZE_20:
452 val = AOUT_20BIT;
453 break;
454 case HDMI_AUDIO_SAMPLE_SIZE_24:
455 case HDMI_AUDIO_SAMPLE_SIZE_STREAM:
456 val = AOUT_24BIT;
457 break;
458 }
459
460 mtk_hdmi_mask(hdmi, GRL_AOUT_CFG, val, AOUT_BNUM_SEL_MASK);
461}
462
463static void mtk_hdmi_hw_aud_set_i2s_fmt(struct mtk_hdmi *hdmi,
464 enum hdmi_aud_i2s_fmt i2s_fmt)
465{
466 u32 val;
467
468 val = mtk_hdmi_read(hdmi, GRL_CFG0);
469 val &= ~(CFG0_W_LENGTH_MASK | CFG0_I2S_MODE_MASK);
470
471 switch (i2s_fmt) {
472 case HDMI_I2S_MODE_RJT_24BIT:
473 val |= CFG0_I2S_MODE_RTJ | CFG0_W_LENGTH_24BIT;
474 break;
475 case HDMI_I2S_MODE_RJT_16BIT:
476 val |= CFG0_I2S_MODE_RTJ | CFG0_W_LENGTH_16BIT;
477 break;
478 case HDMI_I2S_MODE_LJT_24BIT:
479 default:
480 val |= CFG0_I2S_MODE_LTJ | CFG0_W_LENGTH_24BIT;
481 break;
482 case HDMI_I2S_MODE_LJT_16BIT:
483 val |= CFG0_I2S_MODE_LTJ | CFG0_W_LENGTH_16BIT;
484 break;
485 case HDMI_I2S_MODE_I2S_24BIT:
486 val |= CFG0_I2S_MODE_I2S | CFG0_W_LENGTH_24BIT;
487 break;
488 case HDMI_I2S_MODE_I2S_16BIT:
489 val |= CFG0_I2S_MODE_I2S | CFG0_W_LENGTH_16BIT;
490 break;
491 }
492 mtk_hdmi_write(hdmi, GRL_CFG0, val);
493}
494
495static void mtk_hdmi_hw_audio_config(struct mtk_hdmi *hdmi, bool dst)
496{
497 const u8 mask = HIGH_BIT_RATE | DST_NORMAL_DOUBLE | SACD_DST | DSD_SEL;
498 u8 val;
499
500 /* Disable high bitrate, set DST packet normal/double */
501 mtk_hdmi_clear_bits(hdmi, GRL_AOUT_CFG, HIGH_BIT_RATE_PACKET_ALIGN);
502
503 if (dst)
504 val = DST_NORMAL_DOUBLE | SACD_DST;
505 else
506 val = 0;
507
508 mtk_hdmi_mask(hdmi, GRL_AUDIO_CFG, val, mask);
509}
510
511static void mtk_hdmi_hw_aud_set_i2s_chan_num(struct mtk_hdmi *hdmi,
512 enum hdmi_aud_channel_type channel_type,
513 u8 channel_count)
514{
515 unsigned int ch_switch;
516 u8 i2s_uv;
517
518 ch_switch = CH_SWITCH(7, 7) | CH_SWITCH(6, 6) |
519 CH_SWITCH(5, 5) | CH_SWITCH(4, 4) |
520 CH_SWITCH(3, 3) | CH_SWITCH(1, 2) |
521 CH_SWITCH(2, 1) | CH_SWITCH(0, 0);
522
523 if (channel_count == 2) {
524 i2s_uv = I2S_UV_CH_EN(0);
525 } else if (channel_count == 3 || channel_count == 4) {
526 if (channel_count == 4 &&
527 (channel_type == HDMI_AUD_CHAN_TYPE_3_0_LRS ||
528 channel_type == HDMI_AUD_CHAN_TYPE_4_0))
529 i2s_uv = I2S_UV_CH_EN(2) | I2S_UV_CH_EN(0);
530 else
531 i2s_uv = I2S_UV_CH_EN(3) | I2S_UV_CH_EN(2);
532 } else if (channel_count == 6 || channel_count == 5) {
533 if (channel_count == 6 &&
534 channel_type != HDMI_AUD_CHAN_TYPE_5_1 &&
535 channel_type != HDMI_AUD_CHAN_TYPE_4_1_CLRS) {
536 i2s_uv = I2S_UV_CH_EN(3) | I2S_UV_CH_EN(2) |
537 I2S_UV_CH_EN(1) | I2S_UV_CH_EN(0);
538 } else {
539 i2s_uv = I2S_UV_CH_EN(2) | I2S_UV_CH_EN(1) |
540 I2S_UV_CH_EN(0);
541 }
542 } else if (channel_count == 8 || channel_count == 7) {
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(0);
547 }
548
549 mtk_hdmi_write(hdmi, GRL_CH_SW0, ch_switch & 0xff);
550 mtk_hdmi_write(hdmi, GRL_CH_SW1, (ch_switch >> 8) & 0xff);
551 mtk_hdmi_write(hdmi, GRL_CH_SW2, (ch_switch >> 16) & 0xff);
552 mtk_hdmi_write(hdmi, GRL_I2S_UV, i2s_uv);
553}
554
555static void mtk_hdmi_hw_aud_set_input_type(struct mtk_hdmi *hdmi,
556 enum hdmi_aud_input_type input_type)
557{
558 u32 val;
559
560 val = mtk_hdmi_read(hdmi, GRL_CFG1);
561 if (input_type == HDMI_AUD_INPUT_I2S &&
562 (val & CFG1_SPDIF) == CFG1_SPDIF) {
563 val &= ~CFG1_SPDIF;
564 } else if (input_type == HDMI_AUD_INPUT_SPDIF &&
565 (val & CFG1_SPDIF) == 0) {
566 val |= CFG1_SPDIF;
567 }
568 mtk_hdmi_write(hdmi, GRL_CFG1, val);
569}
570
571static void mtk_hdmi_hw_aud_set_channel_status(struct mtk_hdmi *hdmi,
572 u8 *channel_status)
573{
574 int i;
575
576 for (i = 0; i < 5; i++) {
577 mtk_hdmi_write(hdmi, GRL_I2S_C_STA0 + i * 4, channel_status[i]);
578 mtk_hdmi_write(hdmi, GRL_L_STATUS_0 + i * 4, channel_status[i]);
579 mtk_hdmi_write(hdmi, GRL_R_STATUS_0 + i * 4, channel_status[i]);
580 }
581 for (; i < 24; i++) {
582 mtk_hdmi_write(hdmi, GRL_L_STATUS_0 + i * 4, 0);
583 mtk_hdmi_write(hdmi, GRL_R_STATUS_0 + i * 4, 0);
584 }
585}
586
587static void mtk_hdmi_hw_aud_src_reenable(struct mtk_hdmi *hdmi)
588{
589 u32 val;
590
591 val = mtk_hdmi_read(hdmi, GRL_MIX_CTRL);
592 if (val & MIX_CTRL_SRC_EN) {
593 val &= ~MIX_CTRL_SRC_EN;
594 mtk_hdmi_write(hdmi, GRL_MIX_CTRL, val);
595 usleep_range(255, 512);
596 val |= MIX_CTRL_SRC_EN;
597 mtk_hdmi_write(hdmi, GRL_MIX_CTRL, val);
598 }
599}
600
601static void mtk_hdmi_hw_aud_src_disable(struct mtk_hdmi *hdmi)
602{
603 u32 val;
604
605 val = mtk_hdmi_read(hdmi, GRL_MIX_CTRL);
606 val &= ~MIX_CTRL_SRC_EN;
607 mtk_hdmi_write(hdmi, GRL_MIX_CTRL, val);
608 mtk_hdmi_write(hdmi, GRL_SHIFT_L1, 0x00);
609}
610
611static void mtk_hdmi_hw_aud_set_mclk(struct mtk_hdmi *hdmi,
612 enum hdmi_aud_mclk mclk)
613{
614 u32 val;
615
616 val = mtk_hdmi_read(hdmi, GRL_CFG5);
617 val &= CFG5_CD_RATIO_MASK;
618
619 switch (mclk) {
620 case HDMI_AUD_MCLK_128FS:
621 val |= CFG5_FS128;
622 break;
623 case HDMI_AUD_MCLK_256FS:
624 val |= CFG5_FS256;
625 break;
626 case HDMI_AUD_MCLK_384FS:
627 val |= CFG5_FS384;
628 break;
629 case HDMI_AUD_MCLK_512FS:
630 val |= CFG5_FS512;
631 break;
632 case HDMI_AUD_MCLK_768FS:
633 val |= CFG5_FS768;
634 break;
635 default:
636 val |= CFG5_FS256;
637 break;
638 }
639 mtk_hdmi_write(hdmi, GRL_CFG5, val);
640}
641
642struct hdmi_acr_n {
643 unsigned int clock;
644 unsigned int n[3];
645};
646
647/* Recommended N values from HDMI specification, tables 7-1 to 7-3 */
648static const struct hdmi_acr_n hdmi_rec_n_table[] = {
649 /* Clock, N: 32kHz 44.1kHz 48kHz */
650 { 25175, { 4576, 7007, 6864 } },
651 { 74176, { 11648, 17836, 11648 } },
652 { 148352, { 11648, 8918, 5824 } },
653 { 296703, { 5824, 4459, 5824 } },
654 { 297000, { 3072, 4704, 5120 } },
655 { 0, { 4096, 6272, 6144 } }, /* all other TMDS clocks */
656};
657
658/**
659 * hdmi_recommended_n() - Return N value recommended by HDMI specification
660 * @freq: audio sample rate in Hz
661 * @clock: rounded TMDS clock in kHz
662 */
663static unsigned int hdmi_recommended_n(unsigned int freq, unsigned int clock)
664{
665 const struct hdmi_acr_n *recommended;
666 unsigned int i;
667
668 for (i = 0; i < ARRAY_SIZE(hdmi_rec_n_table) - 1; i++) {
669 if (clock == hdmi_rec_n_table[i].clock)
670 break;
671 }
672 recommended = hdmi_rec_n_table + i;
673
674 switch (freq) {
675 case 32000:
676 return recommended->n[0];
677 case 44100:
678 return recommended->n[1];
679 case 48000:
680 return recommended->n[2];
681 case 88200:
682 return recommended->n[1] * 2;
683 case 96000:
684 return recommended->n[2] * 2;
685 case 176400:
686 return recommended->n[1] * 4;
687 case 192000:
688 return recommended->n[2] * 4;
689 default:
690 return (128 * freq) / 1000;
691 }
692}
693
694static unsigned int hdmi_mode_clock_to_hz(unsigned int clock)
695{
696 switch (clock) {
697 case 25175:
698 return 25174825; /* 25.2/1.001 MHz */
699 case 74176:
700 return 74175824; /* 74.25/1.001 MHz */
701 case 148352:
702 return 148351648; /* 148.5/1.001 MHz */
703 case 296703:
704 return 296703297; /* 297/1.001 MHz */
705 default:
706 return clock * 1000;
707 }
708}
709
710static unsigned int hdmi_expected_cts(unsigned int audio_sample_rate,
711 unsigned int tmds_clock, unsigned int n)
712{
713 return DIV_ROUND_CLOSEST_ULL((u64)hdmi_mode_clock_to_hz(tmds_clock) * n,
714 128 * audio_sample_rate);
715}
716
717static void do_hdmi_hw_aud_set_ncts(struct mtk_hdmi *hdmi, unsigned int n,
718 unsigned int cts)
719{
720 unsigned char val[NCTS_BYTES];
721 int i;
722
723 mtk_hdmi_write(hdmi, GRL_NCTS, 0);
724 mtk_hdmi_write(hdmi, GRL_NCTS, 0);
725 mtk_hdmi_write(hdmi, GRL_NCTS, 0);
726 memset(val, 0, sizeof(val));
727
728 val[0] = (cts >> 24) & 0xff;
729 val[1] = (cts >> 16) & 0xff;
730 val[2] = (cts >> 8) & 0xff;
731 val[3] = cts & 0xff;
732
733 val[4] = (n >> 16) & 0xff;
734 val[5] = (n >> 8) & 0xff;
735 val[6] = n & 0xff;
736
737 for (i = 0; i < NCTS_BYTES; i++)
738 mtk_hdmi_write(hdmi, GRL_NCTS, val[i]);
739}
740
741static void mtk_hdmi_hw_aud_set_ncts(struct mtk_hdmi *hdmi,
742 unsigned int sample_rate,
743 unsigned int clock)
744{
745 unsigned int n, cts;
746
747 n = hdmi_recommended_n(sample_rate, clock);
748 cts = hdmi_expected_cts(sample_rate, clock, n);
749
750 dev_dbg(hdmi->dev, "%s: sample_rate=%u, clock=%d, cts=%u, n=%u\n",
751 __func__, sample_rate, clock, n, cts);
752
753 mtk_hdmi_mask(hdmi, DUMMY_304, AUDIO_I2S_NCTS_SEL_64,
754 AUDIO_I2S_NCTS_SEL);
755 do_hdmi_hw_aud_set_ncts(hdmi, n, cts);
756}
757
758static u8 mtk_hdmi_aud_get_chnl_count(enum hdmi_aud_channel_type channel_type)
759{
760 switch (channel_type) {
761 case HDMI_AUD_CHAN_TYPE_1_0:
762 case HDMI_AUD_CHAN_TYPE_1_1:
763 case HDMI_AUD_CHAN_TYPE_2_0:
764 return 2;
765 case HDMI_AUD_CHAN_TYPE_2_1:
766 case HDMI_AUD_CHAN_TYPE_3_0:
767 return 3;
768 case HDMI_AUD_CHAN_TYPE_3_1:
769 case HDMI_AUD_CHAN_TYPE_4_0:
770 case HDMI_AUD_CHAN_TYPE_3_0_LRS:
771 return 4;
772 case HDMI_AUD_CHAN_TYPE_4_1:
773 case HDMI_AUD_CHAN_TYPE_5_0:
774 case HDMI_AUD_CHAN_TYPE_3_1_LRS:
775 case HDMI_AUD_CHAN_TYPE_4_0_CLRS:
776 return 5;
777 case HDMI_AUD_CHAN_TYPE_5_1:
778 case HDMI_AUD_CHAN_TYPE_6_0:
779 case HDMI_AUD_CHAN_TYPE_4_1_CLRS:
780 case HDMI_AUD_CHAN_TYPE_6_0_CS:
781 case HDMI_AUD_CHAN_TYPE_6_0_CH:
782 case HDMI_AUD_CHAN_TYPE_6_0_OH:
783 case HDMI_AUD_CHAN_TYPE_6_0_CHR:
784 return 6;
785 case HDMI_AUD_CHAN_TYPE_6_1:
786 case HDMI_AUD_CHAN_TYPE_6_1_CS:
787 case HDMI_AUD_CHAN_TYPE_6_1_CH:
788 case HDMI_AUD_CHAN_TYPE_6_1_OH:
789 case HDMI_AUD_CHAN_TYPE_6_1_CHR:
790 case HDMI_AUD_CHAN_TYPE_7_0:
791 case HDMI_AUD_CHAN_TYPE_7_0_LH_RH:
792 case HDMI_AUD_CHAN_TYPE_7_0_LSR_RSR:
793 case HDMI_AUD_CHAN_TYPE_7_0_LC_RC:
794 case HDMI_AUD_CHAN_TYPE_7_0_LW_RW:
795 case HDMI_AUD_CHAN_TYPE_7_0_LSD_RSD:
796 case HDMI_AUD_CHAN_TYPE_7_0_LSS_RSS:
797 case HDMI_AUD_CHAN_TYPE_7_0_LHS_RHS:
798 case HDMI_AUD_CHAN_TYPE_7_0_CS_CH:
799 case HDMI_AUD_CHAN_TYPE_7_0_CS_OH:
800 case HDMI_AUD_CHAN_TYPE_7_0_CS_CHR:
801 case HDMI_AUD_CHAN_TYPE_7_0_CH_OH:
802 case HDMI_AUD_CHAN_TYPE_7_0_CH_CHR:
803 case HDMI_AUD_CHAN_TYPE_7_0_OH_CHR:
804 case HDMI_AUD_CHAN_TYPE_7_0_LSS_RSS_LSR_RSR:
805 case HDMI_AUD_CHAN_TYPE_8_0_LH_RH_CS:
806 return 7;
807 case HDMI_AUD_CHAN_TYPE_7_1:
808 case HDMI_AUD_CHAN_TYPE_7_1_LH_RH:
809 case HDMI_AUD_CHAN_TYPE_7_1_LSR_RSR:
810 case HDMI_AUD_CHAN_TYPE_7_1_LC_RC:
811 case HDMI_AUD_CHAN_TYPE_7_1_LW_RW:
812 case HDMI_AUD_CHAN_TYPE_7_1_LSD_RSD:
813 case HDMI_AUD_CHAN_TYPE_7_1_LSS_RSS:
814 case HDMI_AUD_CHAN_TYPE_7_1_LHS_RHS:
815 case HDMI_AUD_CHAN_TYPE_7_1_CS_CH:
816 case HDMI_AUD_CHAN_TYPE_7_1_CS_OH:
817 case HDMI_AUD_CHAN_TYPE_7_1_CS_CHR:
818 case HDMI_AUD_CHAN_TYPE_7_1_CH_OH:
819 case HDMI_AUD_CHAN_TYPE_7_1_CH_CHR:
820 case HDMI_AUD_CHAN_TYPE_7_1_OH_CHR:
821 case HDMI_AUD_CHAN_TYPE_7_1_LSS_RSS_LSR_RSR:
822 return 8;
823 default:
824 return 2;
825 }
826}
827
828static int mtk_hdmi_video_change_vpll(struct mtk_hdmi *hdmi, u32 clock)
829{
830 unsigned long rate;
831 int ret;
832
833 /* The DPI driver already should have set TVDPLL to the correct rate */
834 ret = clk_set_rate(hdmi->clk[MTK_HDMI_CLK_HDMI_PLL], clock);
835 if (ret) {
836 dev_err(hdmi->dev, "Failed to set PLL to %u Hz: %d\n", clock,
837 ret);
838 return ret;
839 }
840
841 rate = clk_get_rate(hdmi->clk[MTK_HDMI_CLK_HDMI_PLL]);
842
843 if (DIV_ROUND_CLOSEST(rate, 1000) != DIV_ROUND_CLOSEST(clock, 1000))
844 dev_warn(hdmi->dev, "Want PLL %u Hz, got %lu Hz\n", clock,
845 rate);
846 else
847 dev_dbg(hdmi->dev, "Want PLL %u Hz, got %lu Hz\n", clock, rate);
848
849 mtk_hdmi_hw_config_sys(hdmi);
850 mtk_hdmi_hw_set_deep_color_mode(hdmi);
851 return 0;
852}
853
854static void mtk_hdmi_video_set_display_mode(struct mtk_hdmi *hdmi,
855 struct drm_display_mode *mode)
856{
857 mtk_hdmi_hw_reset(hdmi);
858 mtk_hdmi_hw_enable_notice(hdmi, true);
859 mtk_hdmi_hw_write_int_mask(hdmi, 0xff);
860 mtk_hdmi_hw_enable_dvi_mode(hdmi, hdmi->dvi_mode);
861 mtk_hdmi_hw_ncts_auto_write_enable(hdmi, true);
862
863 mtk_hdmi_hw_msic_setting(hdmi, mode);
864}
865
866static int mtk_hdmi_aud_enable_packet(struct mtk_hdmi *hdmi, bool enable)
867{
868 mtk_hdmi_hw_send_aud_packet(hdmi, enable);
869 return 0;
870}
871
872static int mtk_hdmi_aud_on_off_hw_ncts(struct mtk_hdmi *hdmi, bool on)
873{
874 mtk_hdmi_hw_ncts_enable(hdmi, on);
875 return 0;
876}
877
878static int mtk_hdmi_aud_set_input(struct mtk_hdmi *hdmi)
879{
880 enum hdmi_aud_channel_type chan_type;
881 u8 chan_count;
882 bool dst;
883
884 mtk_hdmi_hw_aud_set_channel_swap(hdmi, HDMI_AUD_SWAP_LFE_CC);
885 mtk_hdmi_set_bits(hdmi, GRL_MIX_CTRL, MIX_CTRL_FLAT);
886
887 if (hdmi->aud_param.aud_input_type == HDMI_AUD_INPUT_SPDIF &&
888 hdmi->aud_param.aud_codec == HDMI_AUDIO_CODING_TYPE_DST) {
889 mtk_hdmi_hw_aud_set_bit_num(hdmi, HDMI_AUDIO_SAMPLE_SIZE_24);
890 } else if (hdmi->aud_param.aud_i2s_fmt == HDMI_I2S_MODE_LJT_24BIT) {
891 hdmi->aud_param.aud_i2s_fmt = HDMI_I2S_MODE_LJT_16BIT;
892 }
893
894 mtk_hdmi_hw_aud_set_i2s_fmt(hdmi, hdmi->aud_param.aud_i2s_fmt);
895 mtk_hdmi_hw_aud_set_bit_num(hdmi, HDMI_AUDIO_SAMPLE_SIZE_24);
896
897 dst = ((hdmi->aud_param.aud_input_type == HDMI_AUD_INPUT_SPDIF) &&
898 (hdmi->aud_param.aud_codec == HDMI_AUDIO_CODING_TYPE_DST));
899 mtk_hdmi_hw_audio_config(hdmi, dst);
900
901 if (hdmi->aud_param.aud_input_type == HDMI_AUD_INPUT_SPDIF)
902 chan_type = HDMI_AUD_CHAN_TYPE_2_0;
903 else
904 chan_type = hdmi->aud_param.aud_input_chan_type;
905 chan_count = mtk_hdmi_aud_get_chnl_count(chan_type);
906 mtk_hdmi_hw_aud_set_i2s_chan_num(hdmi, chan_type, chan_count);
907 mtk_hdmi_hw_aud_set_input_type(hdmi, hdmi->aud_param.aud_input_type);
908
909 return 0;
910}
911
912static int mtk_hdmi_aud_set_src(struct mtk_hdmi *hdmi,
913 struct drm_display_mode *display_mode)
914{
915 unsigned int sample_rate = hdmi->aud_param.codec_params.sample_rate;
916
917 mtk_hdmi_aud_on_off_hw_ncts(hdmi, false);
918 mtk_hdmi_hw_aud_src_disable(hdmi);
919 mtk_hdmi_clear_bits(hdmi, GRL_CFG2, CFG2_ACLK_INV);
920
921 if (hdmi->aud_param.aud_input_type == HDMI_AUD_INPUT_I2S) {
922 switch (sample_rate) {
923 case 32000:
924 case 44100:
925 case 48000:
926 case 88200:
927 case 96000:
928 break;
929 default:
930 return -EINVAL;
931 }
932 mtk_hdmi_hw_aud_set_mclk(hdmi, hdmi->aud_param.aud_mclk);
933 } else {
934 switch (sample_rate) {
935 case 32000:
936 case 44100:
937 case 48000:
938 break;
939 default:
940 return -EINVAL;
941 }
942 mtk_hdmi_hw_aud_set_mclk(hdmi, HDMI_AUD_MCLK_128FS);
943 }
944
945 mtk_hdmi_hw_aud_set_ncts(hdmi, sample_rate, display_mode->clock);
946
947 mtk_hdmi_hw_aud_src_reenable(hdmi);
948 return 0;
949}
950
951static int mtk_hdmi_aud_output_config(struct mtk_hdmi *hdmi,
952 struct drm_display_mode *display_mode)
953{
954 mtk_hdmi_hw_aud_mute(hdmi);
955 mtk_hdmi_aud_enable_packet(hdmi, false);
956
957 mtk_hdmi_aud_set_input(hdmi);
958 mtk_hdmi_aud_set_src(hdmi, display_mode);
959 mtk_hdmi_hw_aud_set_channel_status(hdmi,
960 hdmi->aud_param.codec_params.iec.status);
961
962 usleep_range(50, 100);
963
964 mtk_hdmi_aud_on_off_hw_ncts(hdmi, true);
965 mtk_hdmi_aud_enable_packet(hdmi, true);
966 mtk_hdmi_hw_aud_unmute(hdmi);
967 return 0;
968}
969
970static int mtk_hdmi_setup_avi_infoframe(struct mtk_hdmi *hdmi,
971 struct drm_display_mode *mode)
972{
973 struct hdmi_avi_infoframe frame;
974 u8 buffer[17];
975 ssize_t err;
976
977 err = drm_hdmi_avi_infoframe_from_display_mode(&frame, mode);
978 if (err < 0) {
979 dev_err(hdmi->dev,
980 "Failed to get AVI infoframe from mode: %zd\n", err);
981 return err;
982 }
983
984 err = hdmi_avi_infoframe_pack(&frame, buffer, sizeof(buffer));
985 if (err < 0) {
986 dev_err(hdmi->dev, "Failed to pack AVI infoframe: %zd\n", err);
987 return err;
988 }
989
990 mtk_hdmi_hw_send_info_frame(hdmi, buffer, sizeof(buffer));
991 return 0;
992}
993
994static int mtk_hdmi_setup_spd_infoframe(struct mtk_hdmi *hdmi,
995 const char *vendor,
996 const char *product)
997{
998 struct hdmi_spd_infoframe frame;
999 u8 buffer[29];
1000 ssize_t err;
1001
1002 err = hdmi_spd_infoframe_init(&frame, vendor, product);
1003 if (err < 0) {
1004 dev_err(hdmi->dev, "Failed to initialize SPD infoframe: %zd\n",
1005 err);
1006 return err;
1007 }
1008
1009 err = hdmi_spd_infoframe_pack(&frame, buffer, sizeof(buffer));
1010 if (err < 0) {
1011 dev_err(hdmi->dev, "Failed to pack SDP infoframe: %zd\n", err);
1012 return err;
1013 }
1014
1015 mtk_hdmi_hw_send_info_frame(hdmi, buffer, sizeof(buffer));
1016 return 0;
1017}
1018
1019static int mtk_hdmi_setup_audio_infoframe(struct mtk_hdmi *hdmi)
1020{
1021 struct hdmi_audio_infoframe frame;
1022 u8 buffer[14];
1023 ssize_t err;
1024
1025 err = hdmi_audio_infoframe_init(&frame);
1026 if (err < 0) {
1027 dev_err(hdmi->dev, "Failed to setup audio infoframe: %zd\n",
1028 err);
1029 return err;
1030 }
1031
1032 frame.coding_type = HDMI_AUDIO_CODING_TYPE_STREAM;
1033 frame.sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM;
1034 frame.sample_size = HDMI_AUDIO_SAMPLE_SIZE_STREAM;
1035 frame.channels = mtk_hdmi_aud_get_chnl_count(
1036 hdmi->aud_param.aud_input_chan_type);
1037
1038 err = hdmi_audio_infoframe_pack(&frame, buffer, sizeof(buffer));
1039 if (err < 0) {
1040 dev_err(hdmi->dev, "Failed to pack audio infoframe: %zd\n",
1041 err);
1042 return err;
1043 }
1044
1045 mtk_hdmi_hw_send_info_frame(hdmi, buffer, sizeof(buffer));
1046 return 0;
1047}
1048
1049static int mtk_hdmi_setup_vendor_specific_infoframe(struct mtk_hdmi *hdmi,
1050 struct drm_display_mode *mode)
1051{
1052 struct hdmi_vendor_infoframe frame;
1053 u8 buffer[10];
1054 ssize_t err;
1055
1056 err = drm_hdmi_vendor_infoframe_from_display_mode(&frame, mode);
1057 if (err) {
1058 dev_err(hdmi->dev,
1059 "Failed to get vendor infoframe from mode: %zd\n", err);
1060 return err;
1061 }
1062
1063 err = hdmi_vendor_infoframe_pack(&frame, buffer, sizeof(buffer));
1064 if (err) {
1065 dev_err(hdmi->dev, "Failed to pack vendor infoframe: %zd\n",
1066 err);
1067 return err;
1068 }
1069
1070 mtk_hdmi_hw_send_info_frame(hdmi, buffer, sizeof(buffer));
1071 return 0;
1072}
1073
1074static int mtk_hdmi_output_init(struct mtk_hdmi *hdmi)
1075{
1076 struct hdmi_audio_param *aud_param = &hdmi->aud_param;
1077
1078 hdmi->csp = HDMI_COLORSPACE_RGB;
1079 aud_param->aud_codec = HDMI_AUDIO_CODING_TYPE_PCM;
1080 aud_param->aud_sampe_size = HDMI_AUDIO_SAMPLE_SIZE_16;
1081 aud_param->aud_input_type = HDMI_AUD_INPUT_I2S;
1082 aud_param->aud_i2s_fmt = HDMI_I2S_MODE_I2S_24BIT;
1083 aud_param->aud_mclk = HDMI_AUD_MCLK_128FS;
1084 aud_param->aud_input_chan_type = HDMI_AUD_CHAN_TYPE_2_0;
1085
1086 return 0;
1087}
1088
1089static void mtk_hdmi_audio_enable(struct mtk_hdmi *hdmi)
1090{
1091 mtk_hdmi_aud_enable_packet(hdmi, true);
1092 hdmi->audio_enable = true;
1093}
1094
1095static void mtk_hdmi_audio_disable(struct mtk_hdmi *hdmi)
1096{
1097 mtk_hdmi_aud_enable_packet(hdmi, false);
1098 hdmi->audio_enable = false;
1099}
1100
1101static int mtk_hdmi_audio_set_param(struct mtk_hdmi *hdmi,
1102 struct hdmi_audio_param *param)
1103{
1104 if (!hdmi->audio_enable) {
1105 dev_err(hdmi->dev, "hdmi audio is in disable state!\n");
1106 return -EINVAL;
1107 }
1108 dev_dbg(hdmi->dev, "codec:%d, input:%d, channel:%d, fs:%d\n",
1109 param->aud_codec, param->aud_input_type,
1110 param->aud_input_chan_type, param->codec_params.sample_rate);
1111 memcpy(&hdmi->aud_param, param, sizeof(*param));
1112 return mtk_hdmi_aud_output_config(hdmi, &hdmi->mode);
1113}
1114
1115static int mtk_hdmi_output_set_display_mode(struct mtk_hdmi *hdmi,
1116 struct drm_display_mode *mode)
1117{
1118 int ret;
1119
1120 mtk_hdmi_hw_vid_black(hdmi, true);
1121 mtk_hdmi_hw_aud_mute(hdmi);
1122 mtk_hdmi_hw_send_av_mute(hdmi);
1123 phy_power_off(hdmi->phy);
1124
1125 ret = mtk_hdmi_video_change_vpll(hdmi,
1126 mode->clock * 1000);
1127 if (ret) {
1128 dev_err(hdmi->dev, "Failed to set vpll: %d\n", ret);
1129 return ret;
1130 }
1131 mtk_hdmi_video_set_display_mode(hdmi, mode);
1132
1133 phy_power_on(hdmi->phy);
1134 mtk_hdmi_aud_output_config(hdmi, mode);
1135
1136 mtk_hdmi_hw_vid_black(hdmi, false);
1137 mtk_hdmi_hw_aud_unmute(hdmi);
1138 mtk_hdmi_hw_send_av_unmute(hdmi);
1139
1140 return 0;
1141}
1142
1143static const char * const mtk_hdmi_clk_names[MTK_HDMI_CLK_COUNT] = {
1144 [MTK_HDMI_CLK_HDMI_PIXEL] = "pixel",
1145 [MTK_HDMI_CLK_HDMI_PLL] = "pll",
1146 [MTK_HDMI_CLK_AUD_BCLK] = "bclk",
1147 [MTK_HDMI_CLK_AUD_SPDIF] = "spdif",
1148};
1149
1150static int mtk_hdmi_get_all_clk(struct mtk_hdmi *hdmi,
1151 struct device_node *np)
1152{
1153 int i;
1154
1155 for (i = 0; i < ARRAY_SIZE(mtk_hdmi_clk_names); i++) {
1156 hdmi->clk[i] = of_clk_get_by_name(np,
1157 mtk_hdmi_clk_names[i]);
1158 if (IS_ERR(hdmi->clk[i]))
1159 return PTR_ERR(hdmi->clk[i]);
1160 }
1161 return 0;
1162}
1163
1164static int mtk_hdmi_clk_enable_audio(struct mtk_hdmi *hdmi)
1165{
1166 int ret;
1167
1168 ret = clk_prepare_enable(hdmi->clk[MTK_HDMI_CLK_AUD_BCLK]);
1169 if (ret)
1170 return ret;
1171
1172 ret = clk_prepare_enable(hdmi->clk[MTK_HDMI_CLK_AUD_SPDIF]);
1173 if (ret)
1174 goto err;
1175
1176 return 0;
1177err:
1178 clk_disable_unprepare(hdmi->clk[MTK_HDMI_CLK_AUD_BCLK]);
1179 return ret;
1180}
1181
1182static void mtk_hdmi_clk_disable_audio(struct mtk_hdmi *hdmi)
1183{
1184 clk_disable_unprepare(hdmi->clk[MTK_HDMI_CLK_AUD_BCLK]);
1185 clk_disable_unprepare(hdmi->clk[MTK_HDMI_CLK_AUD_SPDIF]);
1186}
1187
1188static enum drm_connector_status hdmi_conn_detect(struct drm_connector *conn,
1189 bool force)
1190{
1191 struct mtk_hdmi *hdmi = hdmi_ctx_from_conn(conn);
1192
1193 return mtk_cec_hpd_high(hdmi->cec_dev) ?
1194 connector_status_connected : connector_status_disconnected;
1195}
1196
1197static void hdmi_conn_destroy(struct drm_connector *conn)
1198{
1199 struct mtk_hdmi *hdmi = hdmi_ctx_from_conn(conn);
1200
1201 mtk_cec_set_hpd_event(hdmi->cec_dev, NULL, NULL);
1202
1203 drm_connector_cleanup(conn);
1204}
1205
1206static int mtk_hdmi_conn_get_modes(struct drm_connector *conn)
1207{
1208 struct mtk_hdmi *hdmi = hdmi_ctx_from_conn(conn);
1209 struct edid *edid;
1210 int ret;
1211
1212 if (!hdmi->ddc_adpt)
1213 return -ENODEV;
1214
1215 edid = drm_get_edid(conn, hdmi->ddc_adpt);
1216 if (!edid)
1217 return -ENODEV;
1218
1219 hdmi->dvi_mode = !drm_detect_monitor_audio(edid);
1220
1221 drm_mode_connector_update_edid_property(conn, edid);
1222
1223 ret = drm_add_edid_modes(conn, edid);
1224 drm_edid_to_eld(conn, edid);
1225 kfree(edid);
1226 return ret;
1227}
1228
1229static int mtk_hdmi_conn_mode_valid(struct drm_connector *conn,
1230 struct drm_display_mode *mode)
1231{
1232 struct mtk_hdmi *hdmi = hdmi_ctx_from_conn(conn);
1233
1234 dev_dbg(hdmi->dev, "xres=%d, yres=%d, refresh=%d, intl=%d clock=%d\n",
1235 mode->hdisplay, mode->vdisplay, mode->vrefresh,
1236 !!(mode->flags & DRM_MODE_FLAG_INTERLACE), mode->clock * 1000);
1237
1238 if (hdmi->bridge.next) {
1239 struct drm_display_mode adjusted_mode;
1240
1241 drm_mode_copy(&adjusted_mode, mode);
1242 if (!drm_bridge_mode_fixup(hdmi->bridge.next, mode,
1243 &adjusted_mode))
1244 return MODE_BAD;
1245 }
1246
1247 if (mode->clock < 27000)
1248 return MODE_CLOCK_LOW;
1249 if (mode->clock > 297000)
1250 return MODE_CLOCK_HIGH;
1251
1252 return drm_mode_validate_size(mode, 0x1fff, 0x1fff);
1253}
1254
1255static struct drm_encoder *mtk_hdmi_conn_best_enc(struct drm_connector *conn)
1256{
1257 struct mtk_hdmi *hdmi = hdmi_ctx_from_conn(conn);
1258
1259 return hdmi->bridge.encoder;
1260}
1261
1262static const struct drm_connector_funcs mtk_hdmi_connector_funcs = {
1263 .dpms = drm_atomic_helper_connector_dpms,
1264 .detect = hdmi_conn_detect,
1265 .fill_modes = drm_helper_probe_single_connector_modes,
1266 .destroy = hdmi_conn_destroy,
1267 .reset = drm_atomic_helper_connector_reset,
1268 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
1269 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
1270};
1271
1272static const struct drm_connector_helper_funcs
1273 mtk_hdmi_connector_helper_funcs = {
1274 .get_modes = mtk_hdmi_conn_get_modes,
1275 .mode_valid = mtk_hdmi_conn_mode_valid,
1276 .best_encoder = mtk_hdmi_conn_best_enc,
1277};
1278
1279static void mtk_hdmi_hpd_event(bool hpd, struct device *dev)
1280{
1281 struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
1282
1283 if (hdmi && hdmi->bridge.encoder && hdmi->bridge.encoder->dev)
1284 drm_helper_hpd_irq_event(hdmi->bridge.encoder->dev);
1285}
1286
1287/*
1288 * Bridge callbacks
1289 */
1290
1291static int mtk_hdmi_bridge_attach(struct drm_bridge *bridge)
1292{
1293 struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
1294 int ret;
1295
1296 ret = drm_connector_init(bridge->encoder->dev, &hdmi->conn,
1297 &mtk_hdmi_connector_funcs,
1298 DRM_MODE_CONNECTOR_HDMIA);
1299 if (ret) {
1300 dev_err(hdmi->dev, "Failed to initialize connector: %d\n", ret);
1301 return ret;
1302 }
1303 drm_connector_helper_add(&hdmi->conn, &mtk_hdmi_connector_helper_funcs);
1304
1305 hdmi->conn.polled = DRM_CONNECTOR_POLL_HPD;
1306 hdmi->conn.interlace_allowed = true;
1307 hdmi->conn.doublescan_allowed = false;
1308
1309 ret = drm_mode_connector_attach_encoder(&hdmi->conn,
1310 bridge->encoder);
1311 if (ret) {
1312 dev_err(hdmi->dev,
1313 "Failed to attach connector to encoder: %d\n", ret);
1314 return ret;
1315 }
1316
1317 if (bridge->next) {
1318 bridge->next->encoder = bridge->encoder;
1319 ret = drm_bridge_attach(bridge->encoder->dev, bridge->next);
1320 if (ret) {
1321 dev_err(hdmi->dev,
1322 "Failed to attach external bridge: %d\n", ret);
1323 return ret;
1324 }
1325 }
1326
1327 mtk_cec_set_hpd_event(hdmi->cec_dev, mtk_hdmi_hpd_event, hdmi->dev);
1328
1329 return 0;
1330}
1331
1332static bool mtk_hdmi_bridge_mode_fixup(struct drm_bridge *bridge,
1333 const struct drm_display_mode *mode,
1334 struct drm_display_mode *adjusted_mode)
1335{
1336 return true;
1337}
1338
1339static void mtk_hdmi_bridge_disable(struct drm_bridge *bridge)
1340{
1341 struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
1342
1343 if (!hdmi->enabled)
1344 return;
1345
1346 phy_power_off(hdmi->phy);
1347 clk_disable_unprepare(hdmi->clk[MTK_HDMI_CLK_HDMI_PIXEL]);
1348 clk_disable_unprepare(hdmi->clk[MTK_HDMI_CLK_HDMI_PLL]);
1349
1350 hdmi->enabled = false;
1351}
1352
1353static void mtk_hdmi_bridge_post_disable(struct drm_bridge *bridge)
1354{
1355 struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
1356
1357 if (!hdmi->powered)
1358 return;
1359
1360 mtk_hdmi_hw_1p4_version_enable(hdmi, true);
1361 mtk_hdmi_hw_make_reg_writable(hdmi, false);
1362
1363 hdmi->powered = false;
1364}
1365
1366static void mtk_hdmi_bridge_mode_set(struct drm_bridge *bridge,
1367 struct drm_display_mode *mode,
1368 struct drm_display_mode *adjusted_mode)
1369{
1370 struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
1371
1372 dev_dbg(hdmi->dev, "cur info: name:%s, hdisplay:%d\n",
1373 adjusted_mode->name, adjusted_mode->hdisplay);
1374 dev_dbg(hdmi->dev, "hsync_start:%d,hsync_end:%d, htotal:%d",
1375 adjusted_mode->hsync_start, adjusted_mode->hsync_end,
1376 adjusted_mode->htotal);
1377 dev_dbg(hdmi->dev, "hskew:%d, vdisplay:%d\n",
1378 adjusted_mode->hskew, adjusted_mode->vdisplay);
1379 dev_dbg(hdmi->dev, "vsync_start:%d, vsync_end:%d, vtotal:%d",
1380 adjusted_mode->vsync_start, adjusted_mode->vsync_end,
1381 adjusted_mode->vtotal);
1382 dev_dbg(hdmi->dev, "vscan:%d, flag:%d\n",
1383 adjusted_mode->vscan, adjusted_mode->flags);
1384
1385 drm_mode_copy(&hdmi->mode, adjusted_mode);
1386}
1387
1388static void mtk_hdmi_bridge_pre_enable(struct drm_bridge *bridge)
1389{
1390 struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
1391
1392 mtk_hdmi_hw_make_reg_writable(hdmi, true);
1393 mtk_hdmi_hw_1p4_version_enable(hdmi, true);
1394
1395 hdmi->powered = true;
1396}
1397
1398static void mtk_hdmi_send_infoframe(struct mtk_hdmi *hdmi,
1399 struct drm_display_mode *mode)
1400{
1401 mtk_hdmi_setup_audio_infoframe(hdmi);
1402 mtk_hdmi_setup_avi_infoframe(hdmi, mode);
1403 mtk_hdmi_setup_spd_infoframe(hdmi, "mediatek", "On-chip HDMI");
1404 if (mode->flags & DRM_MODE_FLAG_3D_MASK)
1405 mtk_hdmi_setup_vendor_specific_infoframe(hdmi, mode);
1406}
1407
1408static void mtk_hdmi_bridge_enable(struct drm_bridge *bridge)
1409{
1410 struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge);
1411
1412 mtk_hdmi_output_set_display_mode(hdmi, &hdmi->mode);
1413 clk_prepare_enable(hdmi->clk[MTK_HDMI_CLK_HDMI_PLL]);
1414 clk_prepare_enable(hdmi->clk[MTK_HDMI_CLK_HDMI_PIXEL]);
1415 phy_power_on(hdmi->phy);
1416 mtk_hdmi_send_infoframe(hdmi, &hdmi->mode);
1417
1418 hdmi->enabled = true;
1419}
1420
1421static const struct drm_bridge_funcs mtk_hdmi_bridge_funcs = {
1422 .attach = mtk_hdmi_bridge_attach,
1423 .mode_fixup = mtk_hdmi_bridge_mode_fixup,
1424 .disable = mtk_hdmi_bridge_disable,
1425 .post_disable = mtk_hdmi_bridge_post_disable,
1426 .mode_set = mtk_hdmi_bridge_mode_set,
1427 .pre_enable = mtk_hdmi_bridge_pre_enable,
1428 .enable = mtk_hdmi_bridge_enable,
1429};
1430
1431static int mtk_hdmi_dt_parse_pdata(struct mtk_hdmi *hdmi,
1432 struct platform_device *pdev)
1433{
1434 struct device *dev = &pdev->dev;
1435 struct device_node *np = dev->of_node;
1436 struct device_node *cec_np, *port, *ep, *remote, *i2c_np;
1437 struct platform_device *cec_pdev;
1438 struct regmap *regmap;
1439 struct resource *mem;
1440 int ret;
1441
1442 ret = mtk_hdmi_get_all_clk(hdmi, np);
1443 if (ret) {
1444 dev_err(dev, "Failed to get clocks: %d\n", ret);
1445 return ret;
1446 }
1447
1448 /* The CEC module handles HDMI hotplug detection */
1449 cec_np = of_find_compatible_node(np->parent, NULL,
1450 "mediatek,mt8173-cec");
1451 if (!cec_np) {
1452 dev_err(dev, "Failed to find CEC node\n");
1453 return -EINVAL;
1454 }
1455
1456 cec_pdev = of_find_device_by_node(cec_np);
1457 if (!cec_pdev) {
1458 dev_err(hdmi->dev, "Waiting for CEC device %s\n",
1459 cec_np->full_name);
1460 return -EPROBE_DEFER;
1461 }
1462 hdmi->cec_dev = &cec_pdev->dev;
1463
1464 /*
1465 * The mediatek,syscon-hdmi property contains a phandle link to the
1466 * MMSYS_CONFIG device and the register offset of the HDMI_SYS_CFG
1467 * registers it contains.
1468 */
1469 regmap = syscon_regmap_lookup_by_phandle(np, "mediatek,syscon-hdmi");
1470 ret = of_property_read_u32_index(np, "mediatek,syscon-hdmi", 1,
1471 &hdmi->sys_offset);
1472 if (IS_ERR(regmap))
1473 ret = PTR_ERR(regmap);
1474 if (ret) {
1475 ret = PTR_ERR(regmap);
1476 dev_err(dev,
1477 "Failed to get system configuration registers: %d\n",
1478 ret);
1479 return ret;
1480 }
1481 hdmi->sys_regmap = regmap;
1482
1483 mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1484 hdmi->regs = devm_ioremap_resource(dev, mem);
1485 if (IS_ERR(hdmi->regs))
1486 return PTR_ERR(hdmi->regs);
1487
1488 port = of_graph_get_port_by_id(np, 1);
1489 if (!port) {
1490 dev_err(dev, "Missing output port node\n");
1491 return -EINVAL;
1492 }
1493
1494 ep = of_get_child_by_name(port, "endpoint");
1495 if (!ep) {
1496 dev_err(dev, "Missing endpoint node in port %s\n",
1497 port->full_name);
1498 of_node_put(port);
1499 return -EINVAL;
1500 }
1501 of_node_put(port);
1502
1503 remote = of_graph_get_remote_port_parent(ep);
1504 if (!remote) {
1505 dev_err(dev, "Missing connector/bridge node for endpoint %s\n",
1506 ep->full_name);
1507 of_node_put(ep);
1508 return -EINVAL;
1509 }
1510 of_node_put(ep);
1511
1512 if (!of_device_is_compatible(remote, "hdmi-connector")) {
1513 hdmi->bridge.next = of_drm_find_bridge(remote);
1514 if (!hdmi->bridge.next) {
1515 dev_err(dev, "Waiting for external bridge\n");
1516 of_node_put(remote);
1517 return -EPROBE_DEFER;
1518 }
1519 }
1520
1521 i2c_np = of_parse_phandle(remote, "ddc-i2c-bus", 0);
1522 if (!i2c_np) {
1523 dev_err(dev, "Failed to find ddc-i2c-bus node in %s\n",
1524 remote->full_name);
1525 of_node_put(remote);
1526 return -EINVAL;
1527 }
1528 of_node_put(remote);
1529
1530 hdmi->ddc_adpt = of_find_i2c_adapter_by_node(i2c_np);
1531 if (!hdmi->ddc_adpt) {
1532 dev_err(dev, "Failed to get ddc i2c adapter by node\n");
1533 return -EINVAL;
1534 }
1535
1536 return 0;
1537}
1538
1539/*
1540 * HDMI audio codec callbacks
1541 */
1542
1543static int mtk_hdmi_audio_hw_params(struct device *dev, void *data,
1544 struct hdmi_codec_daifmt *daifmt,
1545 struct hdmi_codec_params *params)
1546{
1547 struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
1548 struct hdmi_audio_param hdmi_params;
1549 unsigned int chan = params->cea.channels;
1550
1551 dev_dbg(hdmi->dev, "%s: %u Hz, %d bit, %d channels\n", __func__,
1552 params->sample_rate, params->sample_width, chan);
1553
1554 if (!hdmi->bridge.encoder)
1555 return -ENODEV;
1556
1557 switch (chan) {
1558 case 2:
1559 hdmi_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_2_0;
1560 break;
1561 case 4:
1562 hdmi_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_4_0;
1563 break;
1564 case 6:
1565 hdmi_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_5_1;
1566 break;
1567 case 8:
1568 hdmi_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_7_1;
1569 break;
1570 default:
1571 dev_err(hdmi->dev, "channel[%d] not supported!\n", chan);
1572 return -EINVAL;
1573 }
1574
1575 switch (params->sample_rate) {
1576 case 32000:
1577 case 44100:
1578 case 48000:
1579 case 88200:
1580 case 96000:
1581 case 176400:
1582 case 192000:
1583 break;
1584 default:
1585 dev_err(hdmi->dev, "rate[%d] not supported!\n",
1586 params->sample_rate);
1587 return -EINVAL;
1588 }
1589
1590 switch (daifmt->fmt) {
1591 case HDMI_I2S:
1592 hdmi_params.aud_codec = HDMI_AUDIO_CODING_TYPE_PCM;
1593 hdmi_params.aud_sampe_size = HDMI_AUDIO_SAMPLE_SIZE_16;
1594 hdmi_params.aud_input_type = HDMI_AUD_INPUT_I2S;
1595 hdmi_params.aud_i2s_fmt = HDMI_I2S_MODE_I2S_24BIT;
1596 hdmi_params.aud_mclk = HDMI_AUD_MCLK_128FS;
1597 break;
1598 default:
1599 dev_err(hdmi->dev, "%s: Invalid DAI format %d\n", __func__,
1600 daifmt->fmt);
1601 return -EINVAL;
1602 }
1603
1604 memcpy(&hdmi_params.codec_params, params,
1605 sizeof(hdmi_params.codec_params));
1606
1607 mtk_hdmi_audio_set_param(hdmi, &hdmi_params);
1608
1609 return 0;
1610}
1611
1612static int mtk_hdmi_audio_startup(struct device *dev, void *data)
1613{
1614 struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
1615
1616 dev_dbg(dev, "%s\n", __func__);
1617
1618 mtk_hdmi_audio_enable(hdmi);
1619
1620 return 0;
1621}
1622
1623static void mtk_hdmi_audio_shutdown(struct device *dev, void *data)
1624{
1625 struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
1626
1627 dev_dbg(dev, "%s\n", __func__);
1628
1629 mtk_hdmi_audio_disable(hdmi);
1630}
1631
1632static int
1633mtk_hdmi_audio_digital_mute(struct device *dev, void *data, bool enable)
1634{
1635 struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
1636
1637 dev_dbg(dev, "%s(%d)\n", __func__, enable);
1638
1639 if (enable)
1640 mtk_hdmi_hw_aud_mute(hdmi);
1641 else
1642 mtk_hdmi_hw_aud_unmute(hdmi);
1643
1644 return 0;
1645}
1646
1647static int mtk_hdmi_audio_get_eld(struct device *dev, void *data, uint8_t *buf, size_t len)
1648{
1649 struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
1650
1651 dev_dbg(dev, "%s\n", __func__);
1652
1653 memcpy(buf, hdmi->conn.eld, min(sizeof(hdmi->conn.eld), len));
1654
1655 return 0;
1656}
1657
1658static const struct hdmi_codec_ops mtk_hdmi_audio_codec_ops = {
1659 .hw_params = mtk_hdmi_audio_hw_params,
1660 .audio_startup = mtk_hdmi_audio_startup,
1661 .audio_shutdown = mtk_hdmi_audio_shutdown,
1662 .digital_mute = mtk_hdmi_audio_digital_mute,
1663 .get_eld = mtk_hdmi_audio_get_eld,
1664};
1665
1666static void mtk_hdmi_register_audio_driver(struct device *dev)
1667{
1668 struct hdmi_codec_pdata codec_data = {
1669 .ops = &mtk_hdmi_audio_codec_ops,
1670 .max_i2s_channels = 2,
1671 .i2s = 1,
1672 };
1673 struct platform_device *pdev;
1674
1675 pdev = platform_device_register_data(dev, HDMI_CODEC_DRV_NAME,
1676 PLATFORM_DEVID_AUTO, &codec_data,
1677 sizeof(codec_data));
1678 if (IS_ERR(pdev))
1679 return;
1680
1681 DRM_INFO("%s driver bound to HDMI\n", HDMI_CODEC_DRV_NAME);
1682}
1683
1684static int mtk_drm_hdmi_probe(struct platform_device *pdev)
1685{
1686 struct mtk_hdmi *hdmi;
1687 struct device *dev = &pdev->dev;
1688 int ret;
1689
1690 hdmi = devm_kzalloc(dev, sizeof(*hdmi), GFP_KERNEL);
1691 if (!hdmi)
1692 return -ENOMEM;
1693
1694 hdmi->dev = dev;
1695
1696 ret = mtk_hdmi_dt_parse_pdata(hdmi, pdev);
1697 if (ret)
1698 return ret;
1699
1700 hdmi->phy = devm_phy_get(dev, "hdmi");
1701 if (IS_ERR(hdmi->phy)) {
1702 ret = PTR_ERR(hdmi->phy);
1703 dev_err(dev, "Failed to get HDMI PHY: %d\n", ret);
1704 return ret;
1705 }
1706
1707 platform_set_drvdata(pdev, hdmi);
1708
1709 ret = mtk_hdmi_output_init(hdmi);
1710 if (ret) {
1711 dev_err(dev, "Failed to initialize hdmi output\n");
1712 return ret;
1713 }
1714
1715 mtk_hdmi_register_audio_driver(dev);
1716
1717 hdmi->bridge.funcs = &mtk_hdmi_bridge_funcs;
1718 hdmi->bridge.of_node = pdev->dev.of_node;
1719 ret = drm_bridge_add(&hdmi->bridge);
1720 if (ret) {
1721 dev_err(dev, "failed to add bridge, ret = %d\n", ret);
1722 return ret;
1723 }
1724
1725 ret = mtk_hdmi_clk_enable_audio(hdmi);
1726 if (ret) {
1727 dev_err(dev, "Failed to enable audio clocks: %d\n", ret);
1728 goto err_bridge_remove;
1729 }
1730
1731 dev_dbg(dev, "mediatek hdmi probe success\n");
1732 return 0;
1733
1734err_bridge_remove:
1735 drm_bridge_remove(&hdmi->bridge);
1736 return ret;
1737}
1738
1739static int mtk_drm_hdmi_remove(struct platform_device *pdev)
1740{
1741 struct mtk_hdmi *hdmi = platform_get_drvdata(pdev);
1742
1743 drm_bridge_remove(&hdmi->bridge);
1744 mtk_hdmi_clk_disable_audio(hdmi);
1745 return 0;
1746}
1747
1748#ifdef CONFIG_PM_SLEEP
1749static int mtk_hdmi_suspend(struct device *dev)
1750{
1751 struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
1752
1753 mtk_hdmi_clk_disable_audio(hdmi);
1754 dev_dbg(dev, "hdmi suspend success!\n");
1755 return 0;
1756}
1757
1758static int mtk_hdmi_resume(struct device *dev)
1759{
1760 struct mtk_hdmi *hdmi = dev_get_drvdata(dev);
1761 int ret = 0;
1762
1763 ret = mtk_hdmi_clk_enable_audio(hdmi);
1764 if (ret) {
1765 dev_err(dev, "hdmi resume failed!\n");
1766 return ret;
1767 }
1768
1769 dev_dbg(dev, "hdmi resume success!\n");
1770 return 0;
1771}
1772#endif
1773static SIMPLE_DEV_PM_OPS(mtk_hdmi_pm_ops,
1774 mtk_hdmi_suspend, mtk_hdmi_resume);
1775
1776static const struct of_device_id mtk_drm_hdmi_of_ids[] = {
1777 { .compatible = "mediatek,mt8173-hdmi", },
1778 {}
1779};
1780
1781static struct platform_driver mtk_hdmi_driver = {
1782 .probe = mtk_drm_hdmi_probe,
1783 .remove = mtk_drm_hdmi_remove,
1784 .driver = {
1785 .name = "mediatek-drm-hdmi",
1786 .of_match_table = mtk_drm_hdmi_of_ids,
1787 .pm = &mtk_hdmi_pm_ops,
1788 },
1789};
1790
1791static struct platform_driver * const mtk_hdmi_drivers[] = {
1792 &mtk_hdmi_phy_driver,
1793 &mtk_hdmi_ddc_driver,
1794 &mtk_cec_driver,
1795 &mtk_hdmi_driver,
1796};
1797
1798static int __init mtk_hdmitx_init(void)
1799{
1800 int ret;
1801 int i;
1802
1803 for (i = 0; i < ARRAY_SIZE(mtk_hdmi_drivers); i++) {
1804 ret = platform_driver_register(mtk_hdmi_drivers[i]);
1805 if (ret < 0) {
1806 pr_err("Failed to register %s driver: %d\n",
1807 mtk_hdmi_drivers[i]->driver.name, ret);
1808 goto err;
1809 }
1810 }
1811
1812 return 0;
1813
1814err:
1815 while (--i >= 0)
1816 platform_driver_unregister(mtk_hdmi_drivers[i]);
1817
1818 return ret;
1819}
1820
1821static void __exit mtk_hdmitx_exit(void)
1822{
1823 int i;
1824
1825 for (i = ARRAY_SIZE(mtk_hdmi_drivers) - 1; i >= 0; i--)
1826 platform_driver_unregister(mtk_hdmi_drivers[i]);
1827}
1828
1829module_init(mtk_hdmitx_init);
1830module_exit(mtk_hdmitx_exit);
1831
1832MODULE_AUTHOR("Jie Qiu <jie.qiu@mediatek.com>");
1833MODULE_DESCRIPTION("MediaTek HDMI Driver");
1834MODULE_LICENSE("GPL v2");