drivers/gpu/drm/mediatek/mtk_hdmi.c

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