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_gpio.h> 20#include <linux/of_graph.h> 21#include <linux/phy/phy.h> 22#include <linux/platform_device.h> 23#include <linux/regmap.h> 24 25#include <sound/hdmi-codec.h> 26 27#include <drm/drm_atomic_helper.h> 28#include <drm/drm_bridge.h> 29#include <drm/drm_crtc.h> 30#include <drm/drm_edid.h> 31#include <drm/drm_print.h> 32#include <drm/drm_probe_helper.h> 33 34#include "mtk_cec.h" 35#include "mtk_hdmi.h" 36#include "mtk_hdmi_regs.h" 37 38#define NCTS_BYTES 7 39 40enum mtk_hdmi_clk_id { 41 MTK_HDMI_CLK_HDMI_PIXEL, 42 MTK_HDMI_CLK_HDMI_PLL, 43 MTK_HDMI_CLK_AUD_BCLK, 44 MTK_HDMI_CLK_AUD_SPDIF, 45 MTK_HDMI_CLK_COUNT 46}; 47 48enum hdmi_aud_input_type { 49 HDMI_AUD_INPUT_I2S = 0, 50 HDMI_AUD_INPUT_SPDIF, 51}; 52 53enum hdmi_aud_i2s_fmt { 54 HDMI_I2S_MODE_RJT_24BIT = 0, 55 HDMI_I2S_MODE_RJT_16BIT, 56 HDMI_I2S_MODE_LJT_24BIT, 57 HDMI_I2S_MODE_LJT_16BIT, 58 HDMI_I2S_MODE_I2S_24BIT, 59 HDMI_I2S_MODE_I2S_16BIT 60}; 61 62enum hdmi_aud_mclk { 63 HDMI_AUD_MCLK_128FS, 64 HDMI_AUD_MCLK_192FS, 65 HDMI_AUD_MCLK_256FS, 66 HDMI_AUD_MCLK_384FS, 67 HDMI_AUD_MCLK_512FS, 68 HDMI_AUD_MCLK_768FS, 69 HDMI_AUD_MCLK_1152FS, 70}; 71 72enum hdmi_aud_channel_type { 73 HDMI_AUD_CHAN_TYPE_1_0 = 0, 74 HDMI_AUD_CHAN_TYPE_1_1, 75 HDMI_AUD_CHAN_TYPE_2_0, 76 HDMI_AUD_CHAN_TYPE_2_1, 77 HDMI_AUD_CHAN_TYPE_3_0, 78 HDMI_AUD_CHAN_TYPE_3_1, 79 HDMI_AUD_CHAN_TYPE_4_0, 80 HDMI_AUD_CHAN_TYPE_4_1, 81 HDMI_AUD_CHAN_TYPE_5_0, 82 HDMI_AUD_CHAN_TYPE_5_1, 83 HDMI_AUD_CHAN_TYPE_6_0, 84 HDMI_AUD_CHAN_TYPE_6_1, 85 HDMI_AUD_CHAN_TYPE_7_0, 86 HDMI_AUD_CHAN_TYPE_7_1, 87 HDMI_AUD_CHAN_TYPE_3_0_LRS, 88 HDMI_AUD_CHAN_TYPE_3_1_LRS, 89 HDMI_AUD_CHAN_TYPE_4_0_CLRS, 90 HDMI_AUD_CHAN_TYPE_4_1_CLRS, 91 HDMI_AUD_CHAN_TYPE_6_1_CS, 92 HDMI_AUD_CHAN_TYPE_6_1_CH, 93 HDMI_AUD_CHAN_TYPE_6_1_OH, 94 HDMI_AUD_CHAN_TYPE_6_1_CHR, 95 HDMI_AUD_CHAN_TYPE_7_1_LH_RH, 96 HDMI_AUD_CHAN_TYPE_7_1_LSR_RSR, 97 HDMI_AUD_CHAN_TYPE_7_1_LC_RC, 98 HDMI_AUD_CHAN_TYPE_7_1_LW_RW, 99 HDMI_AUD_CHAN_TYPE_7_1_LSD_RSD, 100 HDMI_AUD_CHAN_TYPE_7_1_LSS_RSS, 101 HDMI_AUD_CHAN_TYPE_7_1_LHS_RHS, 102 HDMI_AUD_CHAN_TYPE_7_1_CS_CH, 103 HDMI_AUD_CHAN_TYPE_7_1_CS_OH, 104 HDMI_AUD_CHAN_TYPE_7_1_CS_CHR, 105 HDMI_AUD_CHAN_TYPE_7_1_CH_OH, 106 HDMI_AUD_CHAN_TYPE_7_1_CH_CHR, 107 HDMI_AUD_CHAN_TYPE_7_1_OH_CHR, 108 HDMI_AUD_CHAN_TYPE_7_1_LSS_RSS_LSR_RSR, 109 HDMI_AUD_CHAN_TYPE_6_0_CS, 110 HDMI_AUD_CHAN_TYPE_6_0_CH, 111 HDMI_AUD_CHAN_TYPE_6_0_OH, 112 HDMI_AUD_CHAN_TYPE_6_0_CHR, 113 HDMI_AUD_CHAN_TYPE_7_0_LH_RH, 114 HDMI_AUD_CHAN_TYPE_7_0_LSR_RSR, 115 HDMI_AUD_CHAN_TYPE_7_0_LC_RC, 116 HDMI_AUD_CHAN_TYPE_7_0_LW_RW, 117 HDMI_AUD_CHAN_TYPE_7_0_LSD_RSD, 118 HDMI_AUD_CHAN_TYPE_7_0_LSS_RSS, 119 HDMI_AUD_CHAN_TYPE_7_0_LHS_RHS, 120 HDMI_AUD_CHAN_TYPE_7_0_CS_CH, 121 HDMI_AUD_CHAN_TYPE_7_0_CS_OH, 122 HDMI_AUD_CHAN_TYPE_7_0_CS_CHR, 123 HDMI_AUD_CHAN_TYPE_7_0_CH_OH, 124 HDMI_AUD_CHAN_TYPE_7_0_CH_CHR, 125 HDMI_AUD_CHAN_TYPE_7_0_OH_CHR, 126 HDMI_AUD_CHAN_TYPE_7_0_LSS_RSS_LSR_RSR, 127 HDMI_AUD_CHAN_TYPE_8_0_LH_RH_CS, 128 HDMI_AUD_CHAN_TYPE_UNKNOWN = 0xFF 129}; 130 131enum hdmi_aud_channel_swap_type { 132 HDMI_AUD_SWAP_LR, 133 HDMI_AUD_SWAP_LFE_CC, 134 HDMI_AUD_SWAP_LSRS, 135 HDMI_AUD_SWAP_RLS_RRS, 136 HDMI_AUD_SWAP_LR_STATUS, 137}; 138 139struct hdmi_audio_param { 140 enum hdmi_audio_coding_type aud_codec; 141 enum hdmi_audio_sample_size aud_sampe_size; 142 enum hdmi_aud_input_type aud_input_type; 143 enum hdmi_aud_i2s_fmt aud_i2s_fmt; 144 enum hdmi_aud_mclk aud_mclk; 145 enum hdmi_aud_channel_type aud_input_chan_type; 146 struct hdmi_codec_params codec_params; 147}; 148 149struct mtk_hdmi_conf { 150 bool tz_disabled; 151}; 152 153struct mtk_hdmi { 154 struct drm_bridge bridge; 155 struct drm_bridge *next_bridge; 156 struct drm_connector conn; 157 struct device *dev; 158 const struct mtk_hdmi_conf *conf; 159 struct phy *phy; 160 struct device *cec_dev; 161 struct i2c_adapter *ddc_adpt; 162 struct clk *clk[MTK_HDMI_CLK_COUNT]; 163 struct drm_display_mode mode; 164 bool dvi_mode; 165 u32 min_clock; 166 u32 max_clock; 167 u32 max_hdisplay; 168 u32 max_vdisplay; 169 u32 ibias; 170 u32 ibias_up; 171 struct regmap *sys_regmap; 172 unsigned int sys_offset; 173 void __iomem *regs; 174 enum hdmi_colorspace csp; 175 struct hdmi_audio_param aud_param; 176 bool audio_enable; 177 bool powered; 178 bool enabled; 179 hdmi_codec_plugged_cb plugged_cb; 180 struct device *codec_dev; 181 struct mutex update_plugged_status_lock; 182}; 183 184static inline struct mtk_hdmi *hdmi_ctx_from_bridge(struct drm_bridge *b) 185{ 186 return container_of(b, struct mtk_hdmi, bridge); 187} 188 189static inline struct mtk_hdmi *hdmi_ctx_from_conn(struct drm_connector *c) 190{ 191 return container_of(c, struct mtk_hdmi, conn); 192} 193 194static u32 mtk_hdmi_read(struct mtk_hdmi *hdmi, u32 offset) 195{ 196 return readl(hdmi->regs + offset); 197} 198 199static void mtk_hdmi_write(struct mtk_hdmi *hdmi, u32 offset, u32 val) 200{ 201 writel(val, hdmi->regs + offset); 202} 203 204static void mtk_hdmi_clear_bits(struct mtk_hdmi *hdmi, u32 offset, u32 bits) 205{ 206 void __iomem *reg = hdmi->regs + offset; 207 u32 tmp; 208 209 tmp = readl(reg); 210 tmp &= ~bits; 211 writel(tmp, reg); 212} 213 214static void mtk_hdmi_set_bits(struct mtk_hdmi *hdmi, u32 offset, u32 bits) 215{ 216 void __iomem *reg = hdmi->regs + offset; 217 u32 tmp; 218 219 tmp = readl(reg); 220 tmp |= bits; 221 writel(tmp, reg); 222} 223 224static void mtk_hdmi_mask(struct mtk_hdmi *hdmi, u32 offset, u32 val, u32 mask) 225{ 226 void __iomem *reg = hdmi->regs + offset; 227 u32 tmp; 228 229 tmp = readl(reg); 230 tmp = (tmp & ~mask) | (val & mask); 231 writel(tmp, reg); 232} 233 234static void mtk_hdmi_hw_vid_black(struct mtk_hdmi *hdmi, bool black) 235{ 236 mtk_hdmi_mask(hdmi, VIDEO_CFG_4, black ? GEN_RGB : NORMAL_PATH, 237 VIDEO_SOURCE_SEL); 238} 239 240static void mtk_hdmi_hw_make_reg_writable(struct mtk_hdmi *hdmi, bool enable) 241{ 242 struct arm_smccc_res res; 243 244 /* 245 * MT8173 HDMI hardware has an output control bit to enable/disable HDMI 246 * output. This bit can only be controlled in ARM supervisor mode. 247 * The ARM trusted firmware provides an API for the HDMI driver to set 248 * this control bit to enable HDMI output in supervisor mode. 249 */ 250 if (hdmi->conf && hdmi->conf->tz_disabled) 251 regmap_update_bits(hdmi->sys_regmap, 252 hdmi->sys_offset + HDMI_SYS_CFG20, 253 0x80008005, enable ? 0x80000005 : 0x8000); 254 else 255 arm_smccc_smc(MTK_SIP_SET_AUTHORIZED_SECURE_REG, 0x14000904, 256 0x80000000, 0, 0, 0, 0, 0, &res); 257 258 regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG20, 259 HDMI_PCLK_FREE_RUN, enable ? HDMI_PCLK_FREE_RUN : 0); 260 regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG1C, 261 HDMI_ON | ANLG_ON, enable ? (HDMI_ON | ANLG_ON) : 0); 262} 263 264static void mtk_hdmi_hw_1p4_version_enable(struct mtk_hdmi *hdmi, bool enable) 265{ 266 regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG20, 267 HDMI2P0_EN, enable ? 0 : HDMI2P0_EN); 268} 269 270static void mtk_hdmi_hw_aud_mute(struct mtk_hdmi *hdmi) 271{ 272 mtk_hdmi_set_bits(hdmi, GRL_AUDIO_CFG, AUDIO_ZERO); 273} 274 275static void mtk_hdmi_hw_aud_unmute(struct mtk_hdmi *hdmi) 276{ 277 mtk_hdmi_clear_bits(hdmi, GRL_AUDIO_CFG, AUDIO_ZERO); 278} 279 280static void mtk_hdmi_hw_reset(struct mtk_hdmi *hdmi) 281{ 282 regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG1C, 283 HDMI_RST, HDMI_RST); 284 regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG1C, 285 HDMI_RST, 0); 286 mtk_hdmi_clear_bits(hdmi, GRL_CFG3, CFG3_CONTROL_PACKET_DELAY); 287 regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG1C, 288 ANLG_ON, ANLG_ON); 289} 290 291static void mtk_hdmi_hw_enable_notice(struct mtk_hdmi *hdmi, bool enable_notice) 292{ 293 mtk_hdmi_mask(hdmi, GRL_CFG2, enable_notice ? CFG2_NOTICE_EN : 0, 294 CFG2_NOTICE_EN); 295} 296 297static void mtk_hdmi_hw_write_int_mask(struct mtk_hdmi *hdmi, u32 int_mask) 298{ 299 mtk_hdmi_write(hdmi, GRL_INT_MASK, int_mask); 300} 301 302static void mtk_hdmi_hw_enable_dvi_mode(struct mtk_hdmi *hdmi, bool enable) 303{ 304 mtk_hdmi_mask(hdmi, GRL_CFG1, enable ? CFG1_DVI : 0, CFG1_DVI); 305} 306 307static void mtk_hdmi_hw_send_info_frame(struct mtk_hdmi *hdmi, u8 *buffer, 308 u8 len) 309{ 310 u32 ctrl_reg = GRL_CTRL; 311 int i; 312 u8 *frame_data; 313 enum hdmi_infoframe_type frame_type; 314 u8 frame_ver; 315 u8 frame_len; 316 u8 checksum; 317 int ctrl_frame_en = 0; 318 319 frame_type = *buffer++; 320 frame_ver = *buffer++; 321 frame_len = *buffer++; 322 checksum = *buffer++; 323 frame_data = buffer; 324 325 dev_dbg(hdmi->dev, 326 "frame_type:0x%x,frame_ver:0x%x,frame_len:0x%x,checksum:0x%x\n", 327 frame_type, frame_ver, frame_len, checksum); 328 329 switch (frame_type) { 330 case HDMI_INFOFRAME_TYPE_AVI: 331 ctrl_frame_en = CTRL_AVI_EN; 332 ctrl_reg = GRL_CTRL; 333 break; 334 case HDMI_INFOFRAME_TYPE_SPD: 335 ctrl_frame_en = CTRL_SPD_EN; 336 ctrl_reg = GRL_CTRL; 337 break; 338 case HDMI_INFOFRAME_TYPE_AUDIO: 339 ctrl_frame_en = CTRL_AUDIO_EN; 340 ctrl_reg = GRL_CTRL; 341 break; 342 case HDMI_INFOFRAME_TYPE_VENDOR: 343 ctrl_frame_en = VS_EN; 344 ctrl_reg = GRL_ACP_ISRC_CTRL; 345 break; 346 default: 347 dev_err(hdmi->dev, "Unknown infoframe type %d\n", frame_type); 348 return; 349 } 350 mtk_hdmi_clear_bits(hdmi, ctrl_reg, ctrl_frame_en); 351 mtk_hdmi_write(hdmi, GRL_INFOFRM_TYPE, frame_type); 352 mtk_hdmi_write(hdmi, GRL_INFOFRM_VER, frame_ver); 353 mtk_hdmi_write(hdmi, GRL_INFOFRM_LNG, frame_len); 354 355 mtk_hdmi_write(hdmi, GRL_IFM_PORT, checksum); 356 for (i = 0; i < frame_len; i++) 357 mtk_hdmi_write(hdmi, GRL_IFM_PORT, frame_data[i]); 358 359 mtk_hdmi_set_bits(hdmi, ctrl_reg, ctrl_frame_en); 360} 361 362static void mtk_hdmi_hw_send_aud_packet(struct mtk_hdmi *hdmi, bool enable) 363{ 364 mtk_hdmi_mask(hdmi, GRL_SHIFT_R2, enable ? 0 : AUDIO_PACKET_OFF, 365 AUDIO_PACKET_OFF); 366} 367 368static void mtk_hdmi_hw_config_sys(struct mtk_hdmi *hdmi) 369{ 370 regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG20, 371 HDMI_OUT_FIFO_EN | MHL_MODE_ON, 0); 372 usleep_range(2000, 4000); 373 regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG20, 374 HDMI_OUT_FIFO_EN | MHL_MODE_ON, HDMI_OUT_FIFO_EN); 375} 376 377static void mtk_hdmi_hw_set_deep_color_mode(struct mtk_hdmi *hdmi) 378{ 379 regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG20, 380 DEEP_COLOR_MODE_MASK | DEEP_COLOR_EN, 381 COLOR_8BIT_MODE); 382} 383 384static void mtk_hdmi_hw_send_av_mute(struct mtk_hdmi *hdmi) 385{ 386 mtk_hdmi_clear_bits(hdmi, GRL_CFG4, CTRL_AVMUTE); 387 usleep_range(2000, 4000); 388 mtk_hdmi_set_bits(hdmi, GRL_CFG4, CTRL_AVMUTE); 389} 390 391static void mtk_hdmi_hw_send_av_unmute(struct mtk_hdmi *hdmi) 392{ 393 mtk_hdmi_mask(hdmi, GRL_CFG4, CFG4_AV_UNMUTE_EN, 394 CFG4_AV_UNMUTE_EN | CFG4_AV_UNMUTE_SET); 395 usleep_range(2000, 4000); 396 mtk_hdmi_mask(hdmi, GRL_CFG4, CFG4_AV_UNMUTE_SET, 397 CFG4_AV_UNMUTE_EN | CFG4_AV_UNMUTE_SET); 398} 399 400static void mtk_hdmi_hw_ncts_enable(struct mtk_hdmi *hdmi, bool on) 401{ 402 mtk_hdmi_mask(hdmi, GRL_CTS_CTRL, on ? 0 : CTS_CTRL_SOFT, 403 CTS_CTRL_SOFT); 404} 405 406static void mtk_hdmi_hw_ncts_auto_write_enable(struct mtk_hdmi *hdmi, 407 bool enable) 408{ 409 mtk_hdmi_mask(hdmi, GRL_CTS_CTRL, enable ? NCTS_WRI_ANYTIME : 0, 410 NCTS_WRI_ANYTIME); 411} 412 413static void mtk_hdmi_hw_msic_setting(struct mtk_hdmi *hdmi, 414 struct drm_display_mode *mode) 415{ 416 mtk_hdmi_clear_bits(hdmi, GRL_CFG4, CFG4_MHL_MODE); 417 418 if (mode->flags & DRM_MODE_FLAG_INTERLACE && 419 mode->clock == 74250 && 420 mode->vdisplay == 1080) 421 mtk_hdmi_clear_bits(hdmi, GRL_CFG2, CFG2_MHL_DE_SEL); 422 else 423 mtk_hdmi_set_bits(hdmi, GRL_CFG2, CFG2_MHL_DE_SEL); 424} 425 426static void mtk_hdmi_hw_aud_set_channel_swap(struct mtk_hdmi *hdmi, 427 enum hdmi_aud_channel_swap_type swap) 428{ 429 u8 swap_bit; 430 431 switch (swap) { 432 case HDMI_AUD_SWAP_LR: 433 swap_bit = LR_SWAP; 434 break; 435 case HDMI_AUD_SWAP_LFE_CC: 436 swap_bit = LFE_CC_SWAP; 437 break; 438 case HDMI_AUD_SWAP_LSRS: 439 swap_bit = LSRS_SWAP; 440 break; 441 case HDMI_AUD_SWAP_RLS_RRS: 442 swap_bit = RLS_RRS_SWAP; 443 break; 444 case HDMI_AUD_SWAP_LR_STATUS: 445 swap_bit = LR_STATUS_SWAP; 446 break; 447 default: 448 swap_bit = LFE_CC_SWAP; 449 break; 450 } 451 mtk_hdmi_mask(hdmi, GRL_CH_SWAP, swap_bit, 0xff); 452} 453 454static void mtk_hdmi_hw_aud_set_bit_num(struct mtk_hdmi *hdmi, 455 enum hdmi_audio_sample_size bit_num) 456{ 457 u32 val; 458 459 switch (bit_num) { 460 case HDMI_AUDIO_SAMPLE_SIZE_16: 461 val = AOUT_16BIT; 462 break; 463 case HDMI_AUDIO_SAMPLE_SIZE_20: 464 val = AOUT_20BIT; 465 break; 466 case HDMI_AUDIO_SAMPLE_SIZE_24: 467 case HDMI_AUDIO_SAMPLE_SIZE_STREAM: 468 val = AOUT_24BIT; 469 break; 470 } 471 472 mtk_hdmi_mask(hdmi, GRL_AOUT_CFG, val, AOUT_BNUM_SEL_MASK); 473} 474 475static void mtk_hdmi_hw_aud_set_i2s_fmt(struct mtk_hdmi *hdmi, 476 enum hdmi_aud_i2s_fmt i2s_fmt) 477{ 478 u32 val; 479 480 val = mtk_hdmi_read(hdmi, GRL_CFG0); 481 val &= ~(CFG0_W_LENGTH_MASK | CFG0_I2S_MODE_MASK); 482 483 switch (i2s_fmt) { 484 case HDMI_I2S_MODE_RJT_24BIT: 485 val |= CFG0_I2S_MODE_RTJ | CFG0_W_LENGTH_24BIT; 486 break; 487 case HDMI_I2S_MODE_RJT_16BIT: 488 val |= CFG0_I2S_MODE_RTJ | CFG0_W_LENGTH_16BIT; 489 break; 490 case HDMI_I2S_MODE_LJT_24BIT: 491 default: 492 val |= CFG0_I2S_MODE_LTJ | CFG0_W_LENGTH_24BIT; 493 break; 494 case HDMI_I2S_MODE_LJT_16BIT: 495 val |= CFG0_I2S_MODE_LTJ | CFG0_W_LENGTH_16BIT; 496 break; 497 case HDMI_I2S_MODE_I2S_24BIT: 498 val |= CFG0_I2S_MODE_I2S | CFG0_W_LENGTH_24BIT; 499 break; 500 case HDMI_I2S_MODE_I2S_16BIT: 501 val |= CFG0_I2S_MODE_I2S | CFG0_W_LENGTH_16BIT; 502 break; 503 } 504 mtk_hdmi_write(hdmi, GRL_CFG0, val); 505} 506 507static void mtk_hdmi_hw_audio_config(struct mtk_hdmi *hdmi, bool dst) 508{ 509 const u8 mask = HIGH_BIT_RATE | DST_NORMAL_DOUBLE | SACD_DST | DSD_SEL; 510 u8 val; 511 512 /* Disable high bitrate, set DST packet normal/double */ 513 mtk_hdmi_clear_bits(hdmi, GRL_AOUT_CFG, HIGH_BIT_RATE_PACKET_ALIGN); 514 515 if (dst) 516 val = DST_NORMAL_DOUBLE | SACD_DST; 517 else 518 val = 0; 519 520 mtk_hdmi_mask(hdmi, GRL_AUDIO_CFG, val, mask); 521} 522 523static void mtk_hdmi_hw_aud_set_i2s_chan_num(struct mtk_hdmi *hdmi, 524 enum hdmi_aud_channel_type channel_type, 525 u8 channel_count) 526{ 527 unsigned int ch_switch; 528 u8 i2s_uv; 529 530 ch_switch = CH_SWITCH(7, 7) | CH_SWITCH(6, 6) | 531 CH_SWITCH(5, 5) | CH_SWITCH(4, 4) | 532 CH_SWITCH(3, 3) | CH_SWITCH(1, 2) | 533 CH_SWITCH(2, 1) | CH_SWITCH(0, 0); 534 535 if (channel_count == 2) { 536 i2s_uv = I2S_UV_CH_EN(0); 537 } else if (channel_count == 3 || channel_count == 4) { 538 if (channel_count == 4 && 539 (channel_type == HDMI_AUD_CHAN_TYPE_3_0_LRS || 540 channel_type == HDMI_AUD_CHAN_TYPE_4_0)) 541 i2s_uv = I2S_UV_CH_EN(2) | I2S_UV_CH_EN(0); 542 else 543 i2s_uv = I2S_UV_CH_EN(3) | I2S_UV_CH_EN(2); 544 } else if (channel_count == 6 || channel_count == 5) { 545 if (channel_count == 6 && 546 channel_type != HDMI_AUD_CHAN_TYPE_5_1 && 547 channel_type != HDMI_AUD_CHAN_TYPE_4_1_CLRS) { 548 i2s_uv = I2S_UV_CH_EN(3) | I2S_UV_CH_EN(2) | 549 I2S_UV_CH_EN(1) | I2S_UV_CH_EN(0); 550 } else { 551 i2s_uv = I2S_UV_CH_EN(2) | I2S_UV_CH_EN(1) | 552 I2S_UV_CH_EN(0); 553 } 554 } else if (channel_count == 8 || channel_count == 7) { 555 i2s_uv = I2S_UV_CH_EN(3) | I2S_UV_CH_EN(2) | 556 I2S_UV_CH_EN(1) | I2S_UV_CH_EN(0); 557 } else { 558 i2s_uv = I2S_UV_CH_EN(0); 559 } 560 561 mtk_hdmi_write(hdmi, GRL_CH_SW0, ch_switch & 0xff); 562 mtk_hdmi_write(hdmi, GRL_CH_SW1, (ch_switch >> 8) & 0xff); 563 mtk_hdmi_write(hdmi, GRL_CH_SW2, (ch_switch >> 16) & 0xff); 564 mtk_hdmi_write(hdmi, GRL_I2S_UV, i2s_uv); 565} 566 567static void mtk_hdmi_hw_aud_set_input_type(struct mtk_hdmi *hdmi, 568 enum hdmi_aud_input_type input_type) 569{ 570 u32 val; 571 572 val = mtk_hdmi_read(hdmi, GRL_CFG1); 573 if (input_type == HDMI_AUD_INPUT_I2S && 574 (val & CFG1_SPDIF) == CFG1_SPDIF) { 575 val &= ~CFG1_SPDIF; 576 } else if (input_type == HDMI_AUD_INPUT_SPDIF && 577 (val & CFG1_SPDIF) == 0) { 578 val |= CFG1_SPDIF; 579 } 580 mtk_hdmi_write(hdmi, GRL_CFG1, val); 581} 582 583static void mtk_hdmi_hw_aud_set_channel_status(struct mtk_hdmi *hdmi, 584 u8 *channel_status) 585{ 586 int i; 587 588 for (i = 0; i < 5; i++) { 589 mtk_hdmi_write(hdmi, GRL_I2S_C_STA0 + i * 4, channel_status[i]); 590 mtk_hdmi_write(hdmi, GRL_L_STATUS_0 + i * 4, channel_status[i]); 591 mtk_hdmi_write(hdmi, GRL_R_STATUS_0 + i * 4, channel_status[i]); 592 } 593 for (; i < 24; i++) { 594 mtk_hdmi_write(hdmi, GRL_L_STATUS_0 + i * 4, 0); 595 mtk_hdmi_write(hdmi, GRL_R_STATUS_0 + i * 4, 0); 596 } 597} 598 599static void mtk_hdmi_hw_aud_src_reenable(struct mtk_hdmi *hdmi) 600{ 601 u32 val; 602 603 val = mtk_hdmi_read(hdmi, GRL_MIX_CTRL); 604 if (val & MIX_CTRL_SRC_EN) { 605 val &= ~MIX_CTRL_SRC_EN; 606 mtk_hdmi_write(hdmi, GRL_MIX_CTRL, val); 607 usleep_range(255, 512); 608 val |= MIX_CTRL_SRC_EN; 609 mtk_hdmi_write(hdmi, GRL_MIX_CTRL, val); 610 } 611} 612 613static void mtk_hdmi_hw_aud_src_disable(struct mtk_hdmi *hdmi) 614{ 615 u32 val; 616 617 val = mtk_hdmi_read(hdmi, GRL_MIX_CTRL); 618 val &= ~MIX_CTRL_SRC_EN; 619 mtk_hdmi_write(hdmi, GRL_MIX_CTRL, val); 620 mtk_hdmi_write(hdmi, GRL_SHIFT_L1, 0x00); 621} 622 623static void mtk_hdmi_hw_aud_set_mclk(struct mtk_hdmi *hdmi, 624 enum hdmi_aud_mclk mclk) 625{ 626 u32 val; 627 628 val = mtk_hdmi_read(hdmi, GRL_CFG5); 629 val &= CFG5_CD_RATIO_MASK; 630 631 switch (mclk) { 632 case HDMI_AUD_MCLK_128FS: 633 val |= CFG5_FS128; 634 break; 635 case HDMI_AUD_MCLK_256FS: 636 val |= CFG5_FS256; 637 break; 638 case HDMI_AUD_MCLK_384FS: 639 val |= CFG5_FS384; 640 break; 641 case HDMI_AUD_MCLK_512FS: 642 val |= CFG5_FS512; 643 break; 644 case HDMI_AUD_MCLK_768FS: 645 val |= CFG5_FS768; 646 break; 647 default: 648 val |= CFG5_FS256; 649 break; 650 } 651 mtk_hdmi_write(hdmi, GRL_CFG5, val); 652} 653 654struct hdmi_acr_n { 655 unsigned int clock; 656 unsigned int n[3]; 657}; 658 659/* Recommended N values from HDMI specification, tables 7-1 to 7-3 */ 660static const struct hdmi_acr_n hdmi_rec_n_table[] = { 661 /* Clock, N: 32kHz 44.1kHz 48kHz */ 662 { 25175, { 4576, 7007, 6864 } }, 663 { 74176, { 11648, 17836, 11648 } }, 664 { 148352, { 11648, 8918, 5824 } }, 665 { 296703, { 5824, 4459, 5824 } }, 666 { 297000, { 3072, 4704, 5120 } }, 667 { 0, { 4096, 6272, 6144 } }, /* all other TMDS clocks */ 668}; 669 670/** 671 * hdmi_recommended_n() - Return N value recommended by HDMI specification 672 * @freq: audio sample rate in Hz 673 * @clock: rounded TMDS clock in kHz 674 */ 675static unsigned int hdmi_recommended_n(unsigned int freq, unsigned int clock) 676{ 677 const struct hdmi_acr_n *recommended; 678 unsigned int i; 679 680 for (i = 0; i < ARRAY_SIZE(hdmi_rec_n_table) - 1; i++) { 681 if (clock == hdmi_rec_n_table[i].clock) 682 break; 683 } 684 recommended = hdmi_rec_n_table + i; 685 686 switch (freq) { 687 case 32000: 688 return recommended->n[0]; 689 case 44100: 690 return recommended->n[1]; 691 case 48000: 692 return recommended->n[2]; 693 case 88200: 694 return recommended->n[1] * 2; 695 case 96000: 696 return recommended->n[2] * 2; 697 case 176400: 698 return recommended->n[1] * 4; 699 case 192000: 700 return recommended->n[2] * 4; 701 default: 702 return (128 * freq) / 1000; 703 } 704} 705 706static unsigned int hdmi_mode_clock_to_hz(unsigned int clock) 707{ 708 switch (clock) { 709 case 25175: 710 return 25174825; /* 25.2/1.001 MHz */ 711 case 74176: 712 return 74175824; /* 74.25/1.001 MHz */ 713 case 148352: 714 return 148351648; /* 148.5/1.001 MHz */ 715 case 296703: 716 return 296703297; /* 297/1.001 MHz */ 717 default: 718 return clock * 1000; 719 } 720} 721 722static unsigned int hdmi_expected_cts(unsigned int audio_sample_rate, 723 unsigned int tmds_clock, unsigned int n) 724{ 725 return DIV_ROUND_CLOSEST_ULL((u64)hdmi_mode_clock_to_hz(tmds_clock) * n, 726 128 * audio_sample_rate); 727} 728 729static void do_hdmi_hw_aud_set_ncts(struct mtk_hdmi *hdmi, unsigned int n, 730 unsigned int cts) 731{ 732 unsigned char val[NCTS_BYTES]; 733 int i; 734 735 mtk_hdmi_write(hdmi, GRL_NCTS, 0); 736 mtk_hdmi_write(hdmi, GRL_NCTS, 0); 737 mtk_hdmi_write(hdmi, GRL_NCTS, 0); 738 memset(val, 0, sizeof(val)); 739 740 val[0] = (cts >> 24) & 0xff; 741 val[1] = (cts >> 16) & 0xff; 742 val[2] = (cts >> 8) & 0xff; 743 val[3] = cts & 0xff; 744 745 val[4] = (n >> 16) & 0xff; 746 val[5] = (n >> 8) & 0xff; 747 val[6] = n & 0xff; 748 749 for (i = 0; i < NCTS_BYTES; i++) 750 mtk_hdmi_write(hdmi, GRL_NCTS, val[i]); 751} 752 753static void mtk_hdmi_hw_aud_set_ncts(struct mtk_hdmi *hdmi, 754 unsigned int sample_rate, 755 unsigned int clock) 756{ 757 unsigned int n, cts; 758 759 n = hdmi_recommended_n(sample_rate, clock); 760 cts = hdmi_expected_cts(sample_rate, clock, n); 761 762 dev_dbg(hdmi->dev, "%s: sample_rate=%u, clock=%d, cts=%u, n=%u\n", 763 __func__, sample_rate, clock, n, cts); 764 765 mtk_hdmi_mask(hdmi, DUMMY_304, AUDIO_I2S_NCTS_SEL_64, 766 AUDIO_I2S_NCTS_SEL); 767 do_hdmi_hw_aud_set_ncts(hdmi, n, cts); 768} 769 770static u8 mtk_hdmi_aud_get_chnl_count(enum hdmi_aud_channel_type channel_type) 771{ 772 switch (channel_type) { 773 case HDMI_AUD_CHAN_TYPE_1_0: 774 case HDMI_AUD_CHAN_TYPE_1_1: 775 case HDMI_AUD_CHAN_TYPE_2_0: 776 return 2; 777 case HDMI_AUD_CHAN_TYPE_2_1: 778 case HDMI_AUD_CHAN_TYPE_3_0: 779 return 3; 780 case HDMI_AUD_CHAN_TYPE_3_1: 781 case HDMI_AUD_CHAN_TYPE_4_0: 782 case HDMI_AUD_CHAN_TYPE_3_0_LRS: 783 return 4; 784 case HDMI_AUD_CHAN_TYPE_4_1: 785 case HDMI_AUD_CHAN_TYPE_5_0: 786 case HDMI_AUD_CHAN_TYPE_3_1_LRS: 787 case HDMI_AUD_CHAN_TYPE_4_0_CLRS: 788 return 5; 789 case HDMI_AUD_CHAN_TYPE_5_1: 790 case HDMI_AUD_CHAN_TYPE_6_0: 791 case HDMI_AUD_CHAN_TYPE_4_1_CLRS: 792 case HDMI_AUD_CHAN_TYPE_6_0_CS: 793 case HDMI_AUD_CHAN_TYPE_6_0_CH: 794 case HDMI_AUD_CHAN_TYPE_6_0_OH: 795 case HDMI_AUD_CHAN_TYPE_6_0_CHR: 796 return 6; 797 case HDMI_AUD_CHAN_TYPE_6_1: 798 case HDMI_AUD_CHAN_TYPE_6_1_CS: 799 case HDMI_AUD_CHAN_TYPE_6_1_CH: 800 case HDMI_AUD_CHAN_TYPE_6_1_OH: 801 case HDMI_AUD_CHAN_TYPE_6_1_CHR: 802 case HDMI_AUD_CHAN_TYPE_7_0: 803 case HDMI_AUD_CHAN_TYPE_7_0_LH_RH: 804 case HDMI_AUD_CHAN_TYPE_7_0_LSR_RSR: 805 case HDMI_AUD_CHAN_TYPE_7_0_LC_RC: 806 case HDMI_AUD_CHAN_TYPE_7_0_LW_RW: 807 case HDMI_AUD_CHAN_TYPE_7_0_LSD_RSD: 808 case HDMI_AUD_CHAN_TYPE_7_0_LSS_RSS: 809 case HDMI_AUD_CHAN_TYPE_7_0_LHS_RHS: 810 case HDMI_AUD_CHAN_TYPE_7_0_CS_CH: 811 case HDMI_AUD_CHAN_TYPE_7_0_CS_OH: 812 case HDMI_AUD_CHAN_TYPE_7_0_CS_CHR: 813 case HDMI_AUD_CHAN_TYPE_7_0_CH_OH: 814 case HDMI_AUD_CHAN_TYPE_7_0_CH_CHR: 815 case HDMI_AUD_CHAN_TYPE_7_0_OH_CHR: 816 case HDMI_AUD_CHAN_TYPE_7_0_LSS_RSS_LSR_RSR: 817 case HDMI_AUD_CHAN_TYPE_8_0_LH_RH_CS: 818 return 7; 819 case HDMI_AUD_CHAN_TYPE_7_1: 820 case HDMI_AUD_CHAN_TYPE_7_1_LH_RH: 821 case HDMI_AUD_CHAN_TYPE_7_1_LSR_RSR: 822 case HDMI_AUD_CHAN_TYPE_7_1_LC_RC: 823 case HDMI_AUD_CHAN_TYPE_7_1_LW_RW: 824 case HDMI_AUD_CHAN_TYPE_7_1_LSD_RSD: 825 case HDMI_AUD_CHAN_TYPE_7_1_LSS_RSS: 826 case HDMI_AUD_CHAN_TYPE_7_1_LHS_RHS: 827 case HDMI_AUD_CHAN_TYPE_7_1_CS_CH: 828 case HDMI_AUD_CHAN_TYPE_7_1_CS_OH: 829 case HDMI_AUD_CHAN_TYPE_7_1_CS_CHR: 830 case HDMI_AUD_CHAN_TYPE_7_1_CH_OH: 831 case HDMI_AUD_CHAN_TYPE_7_1_CH_CHR: 832 case HDMI_AUD_CHAN_TYPE_7_1_OH_CHR: 833 case HDMI_AUD_CHAN_TYPE_7_1_LSS_RSS_LSR_RSR: 834 return 8; 835 default: 836 return 2; 837 } 838} 839 840static int mtk_hdmi_video_change_vpll(struct mtk_hdmi *hdmi, u32 clock) 841{ 842 unsigned long rate; 843 int ret; 844 845 /* The DPI driver already should have set TVDPLL to the correct rate */ 846 ret = clk_set_rate(hdmi->clk[MTK_HDMI_CLK_HDMI_PLL], clock); 847 if (ret) { 848 dev_err(hdmi->dev, "Failed to set PLL to %u Hz: %d\n", clock, 849 ret); 850 return ret; 851 } 852 853 rate = clk_get_rate(hdmi->clk[MTK_HDMI_CLK_HDMI_PLL]); 854 855 if (DIV_ROUND_CLOSEST(rate, 1000) != DIV_ROUND_CLOSEST(clock, 1000)) 856 dev_warn(hdmi->dev, "Want PLL %u Hz, got %lu Hz\n", clock, 857 rate); 858 else 859 dev_dbg(hdmi->dev, "Want PLL %u Hz, got %lu Hz\n", clock, rate); 860 861 mtk_hdmi_hw_config_sys(hdmi); 862 mtk_hdmi_hw_set_deep_color_mode(hdmi); 863 return 0; 864} 865 866static void mtk_hdmi_video_set_display_mode(struct mtk_hdmi *hdmi, 867 struct drm_display_mode *mode) 868{ 869 mtk_hdmi_hw_reset(hdmi); 870 mtk_hdmi_hw_enable_notice(hdmi, true); 871 mtk_hdmi_hw_write_int_mask(hdmi, 0xff); 872 mtk_hdmi_hw_enable_dvi_mode(hdmi, hdmi->dvi_mode); 873 mtk_hdmi_hw_ncts_auto_write_enable(hdmi, true); 874 875 mtk_hdmi_hw_msic_setting(hdmi, mode); 876} 877 878static int mtk_hdmi_aud_enable_packet(struct mtk_hdmi *hdmi, bool enable) 879{ 880 mtk_hdmi_hw_send_aud_packet(hdmi, enable); 881 return 0; 882} 883 884static int mtk_hdmi_aud_on_off_hw_ncts(struct mtk_hdmi *hdmi, bool on) 885{ 886 mtk_hdmi_hw_ncts_enable(hdmi, on); 887 return 0; 888} 889 890static int mtk_hdmi_aud_set_input(struct mtk_hdmi *hdmi) 891{ 892 enum hdmi_aud_channel_type chan_type; 893 u8 chan_count; 894 bool dst; 895 896 mtk_hdmi_hw_aud_set_channel_swap(hdmi, HDMI_AUD_SWAP_LFE_CC); 897 mtk_hdmi_set_bits(hdmi, GRL_MIX_CTRL, MIX_CTRL_FLAT); 898 899 if (hdmi->aud_param.aud_input_type == HDMI_AUD_INPUT_SPDIF && 900 hdmi->aud_param.aud_codec == HDMI_AUDIO_CODING_TYPE_DST) { 901 mtk_hdmi_hw_aud_set_bit_num(hdmi, HDMI_AUDIO_SAMPLE_SIZE_24); 902 } else if (hdmi->aud_param.aud_i2s_fmt == HDMI_I2S_MODE_LJT_24BIT) { 903 hdmi->aud_param.aud_i2s_fmt = HDMI_I2S_MODE_LJT_16BIT; 904 } 905 906 mtk_hdmi_hw_aud_set_i2s_fmt(hdmi, hdmi->aud_param.aud_i2s_fmt); 907 mtk_hdmi_hw_aud_set_bit_num(hdmi, HDMI_AUDIO_SAMPLE_SIZE_24); 908 909 dst = ((hdmi->aud_param.aud_input_type == HDMI_AUD_INPUT_SPDIF) && 910 (hdmi->aud_param.aud_codec == HDMI_AUDIO_CODING_TYPE_DST)); 911 mtk_hdmi_hw_audio_config(hdmi, dst); 912 913 if (hdmi->aud_param.aud_input_type == HDMI_AUD_INPUT_SPDIF) 914 chan_type = HDMI_AUD_CHAN_TYPE_2_0; 915 else 916 chan_type = hdmi->aud_param.aud_input_chan_type; 917 chan_count = mtk_hdmi_aud_get_chnl_count(chan_type); 918 mtk_hdmi_hw_aud_set_i2s_chan_num(hdmi, chan_type, chan_count); 919 mtk_hdmi_hw_aud_set_input_type(hdmi, hdmi->aud_param.aud_input_type); 920 921 return 0; 922} 923 924static int mtk_hdmi_aud_set_src(struct mtk_hdmi *hdmi, 925 struct drm_display_mode *display_mode) 926{ 927 unsigned int sample_rate = hdmi->aud_param.codec_params.sample_rate; 928 929 mtk_hdmi_aud_on_off_hw_ncts(hdmi, false); 930 mtk_hdmi_hw_aud_src_disable(hdmi); 931 mtk_hdmi_clear_bits(hdmi, GRL_CFG2, CFG2_ACLK_INV); 932 933 if (hdmi->aud_param.aud_input_type == HDMI_AUD_INPUT_I2S) { 934 switch (sample_rate) { 935 case 32000: 936 case 44100: 937 case 48000: 938 case 88200: 939 case 96000: 940 break; 941 default: 942 return -EINVAL; 943 } 944 mtk_hdmi_hw_aud_set_mclk(hdmi, hdmi->aud_param.aud_mclk); 945 } else { 946 switch (sample_rate) { 947 case 32000: 948 case 44100: 949 case 48000: 950 break; 951 default: 952 return -EINVAL; 953 } 954 mtk_hdmi_hw_aud_set_mclk(hdmi, HDMI_AUD_MCLK_128FS); 955 } 956 957 mtk_hdmi_hw_aud_set_ncts(hdmi, sample_rate, display_mode->clock); 958 959 mtk_hdmi_hw_aud_src_reenable(hdmi); 960 return 0; 961} 962 963static int mtk_hdmi_aud_output_config(struct mtk_hdmi *hdmi, 964 struct drm_display_mode *display_mode) 965{ 966 mtk_hdmi_hw_aud_mute(hdmi); 967 mtk_hdmi_aud_enable_packet(hdmi, false); 968 969 mtk_hdmi_aud_set_input(hdmi); 970 mtk_hdmi_aud_set_src(hdmi, display_mode); 971 mtk_hdmi_hw_aud_set_channel_status(hdmi, 972 hdmi->aud_param.codec_params.iec.status); 973 974 usleep_range(50, 100); 975 976 mtk_hdmi_aud_on_off_hw_ncts(hdmi, true); 977 mtk_hdmi_aud_enable_packet(hdmi, true); 978 mtk_hdmi_hw_aud_unmute(hdmi); 979 return 0; 980} 981 982static int mtk_hdmi_setup_avi_infoframe(struct mtk_hdmi *hdmi, 983 struct drm_display_mode *mode) 984{ 985 struct hdmi_avi_infoframe frame; 986 u8 buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AVI_INFOFRAME_SIZE]; 987 ssize_t err; 988 989 err = drm_hdmi_avi_infoframe_from_display_mode(&frame, 990 &hdmi->conn, mode); 991 if (err < 0) { 992 dev_err(hdmi->dev, 993 "Failed to get AVI infoframe from mode: %zd\n", err); 994 return err; 995 } 996 997 err = hdmi_avi_infoframe_pack(&frame, buffer, sizeof(buffer)); 998 if (err < 0) { 999 dev_err(hdmi->dev, "Failed to pack AVI infoframe: %zd\n", err); 1000 return err; 1001 } 1002 1003 mtk_hdmi_hw_send_info_frame(hdmi, buffer, sizeof(buffer)); 1004 return 0; 1005} 1006 1007static int mtk_hdmi_setup_spd_infoframe(struct mtk_hdmi *hdmi, 1008 const char *vendor, 1009 const char *product) 1010{ 1011 struct hdmi_spd_infoframe frame; 1012 u8 buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_SPD_INFOFRAME_SIZE]; 1013 ssize_t err; 1014 1015 err = hdmi_spd_infoframe_init(&frame, vendor, product); 1016 if (err < 0) { 1017 dev_err(hdmi->dev, "Failed to initialize SPD infoframe: %zd\n", 1018 err); 1019 return err; 1020 } 1021 1022 err = hdmi_spd_infoframe_pack(&frame, buffer, sizeof(buffer)); 1023 if (err < 0) { 1024 dev_err(hdmi->dev, "Failed to pack SDP infoframe: %zd\n", err); 1025 return err; 1026 } 1027 1028 mtk_hdmi_hw_send_info_frame(hdmi, buffer, sizeof(buffer)); 1029 return 0; 1030} 1031 1032static int mtk_hdmi_setup_audio_infoframe(struct mtk_hdmi *hdmi) 1033{ 1034 struct hdmi_audio_infoframe frame; 1035 u8 buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AUDIO_INFOFRAME_SIZE]; 1036 ssize_t err; 1037 1038 err = hdmi_audio_infoframe_init(&frame); 1039 if (err < 0) { 1040 dev_err(hdmi->dev, "Failed to setup audio infoframe: %zd\n", 1041 err); 1042 return err; 1043 } 1044 1045 frame.coding_type = HDMI_AUDIO_CODING_TYPE_STREAM; 1046 frame.sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM; 1047 frame.sample_size = HDMI_AUDIO_SAMPLE_SIZE_STREAM; 1048 frame.channels = mtk_hdmi_aud_get_chnl_count( 1049 hdmi->aud_param.aud_input_chan_type); 1050 1051 err = hdmi_audio_infoframe_pack(&frame, buffer, sizeof(buffer)); 1052 if (err < 0) { 1053 dev_err(hdmi->dev, "Failed to pack audio infoframe: %zd\n", 1054 err); 1055 return err; 1056 } 1057 1058 mtk_hdmi_hw_send_info_frame(hdmi, buffer, sizeof(buffer)); 1059 return 0; 1060} 1061 1062static int mtk_hdmi_setup_vendor_specific_infoframe(struct mtk_hdmi *hdmi, 1063 struct drm_display_mode *mode) 1064{ 1065 struct hdmi_vendor_infoframe frame; 1066 u8 buffer[10]; 1067 ssize_t err; 1068 1069 err = drm_hdmi_vendor_infoframe_from_display_mode(&frame, 1070 &hdmi->conn, mode); 1071 if (err) { 1072 dev_err(hdmi->dev, 1073 "Failed to get vendor infoframe from mode: %zd\n", err); 1074 return err; 1075 } 1076 1077 err = hdmi_vendor_infoframe_pack(&frame, buffer, sizeof(buffer)); 1078 if (err < 0) { 1079 dev_err(hdmi->dev, "Failed to pack vendor infoframe: %zd\n", 1080 err); 1081 return err; 1082 } 1083 1084 mtk_hdmi_hw_send_info_frame(hdmi, buffer, sizeof(buffer)); 1085 return 0; 1086} 1087 1088static int mtk_hdmi_output_init(struct mtk_hdmi *hdmi) 1089{ 1090 struct hdmi_audio_param *aud_param = &hdmi->aud_param; 1091 1092 hdmi->csp = HDMI_COLORSPACE_RGB; 1093 aud_param->aud_codec = HDMI_AUDIO_CODING_TYPE_PCM; 1094 aud_param->aud_sampe_size = HDMI_AUDIO_SAMPLE_SIZE_16; 1095 aud_param->aud_input_type = HDMI_AUD_INPUT_I2S; 1096 aud_param->aud_i2s_fmt = HDMI_I2S_MODE_I2S_24BIT; 1097 aud_param->aud_mclk = HDMI_AUD_MCLK_128FS; 1098 aud_param->aud_input_chan_type = HDMI_AUD_CHAN_TYPE_2_0; 1099 1100 return 0; 1101} 1102 1103static void mtk_hdmi_audio_enable(struct mtk_hdmi *hdmi) 1104{ 1105 mtk_hdmi_aud_enable_packet(hdmi, true); 1106 hdmi->audio_enable = true; 1107} 1108 1109static void mtk_hdmi_audio_disable(struct mtk_hdmi *hdmi) 1110{ 1111 mtk_hdmi_aud_enable_packet(hdmi, false); 1112 hdmi->audio_enable = false; 1113} 1114 1115static int mtk_hdmi_audio_set_param(struct mtk_hdmi *hdmi, 1116 struct hdmi_audio_param *param) 1117{ 1118 if (!hdmi->audio_enable) { 1119 dev_err(hdmi->dev, "hdmi audio is in disable state!\n"); 1120 return -EINVAL; 1121 } 1122 dev_dbg(hdmi->dev, "codec:%d, input:%d, channel:%d, fs:%d\n", 1123 param->aud_codec, param->aud_input_type, 1124 param->aud_input_chan_type, param->codec_params.sample_rate); 1125 memcpy(&hdmi->aud_param, param, sizeof(*param)); 1126 return mtk_hdmi_aud_output_config(hdmi, &hdmi->mode); 1127} 1128 1129static int mtk_hdmi_output_set_display_mode(struct mtk_hdmi *hdmi, 1130 struct drm_display_mode *mode) 1131{ 1132 int ret; 1133 1134 mtk_hdmi_hw_vid_black(hdmi, true); 1135 mtk_hdmi_hw_aud_mute(hdmi); 1136 mtk_hdmi_hw_send_av_mute(hdmi); 1137 phy_power_off(hdmi->phy); 1138 1139 ret = mtk_hdmi_video_change_vpll(hdmi, 1140 mode->clock * 1000); 1141 if (ret) { 1142 dev_err(hdmi->dev, "Failed to set vpll: %d\n", ret); 1143 return ret; 1144 } 1145 mtk_hdmi_video_set_display_mode(hdmi, mode); 1146 1147 phy_power_on(hdmi->phy); 1148 mtk_hdmi_aud_output_config(hdmi, mode); 1149 1150 mtk_hdmi_hw_vid_black(hdmi, false); 1151 mtk_hdmi_hw_aud_unmute(hdmi); 1152 mtk_hdmi_hw_send_av_unmute(hdmi); 1153 1154 return 0; 1155} 1156 1157static const char * const mtk_hdmi_clk_names[MTK_HDMI_CLK_COUNT] = { 1158 [MTK_HDMI_CLK_HDMI_PIXEL] = "pixel", 1159 [MTK_HDMI_CLK_HDMI_PLL] = "pll", 1160 [MTK_HDMI_CLK_AUD_BCLK] = "bclk", 1161 [MTK_HDMI_CLK_AUD_SPDIF] = "spdif", 1162}; 1163 1164static int mtk_hdmi_get_all_clk(struct mtk_hdmi *hdmi, 1165 struct device_node *np) 1166{ 1167 int i; 1168 1169 for (i = 0; i < ARRAY_SIZE(mtk_hdmi_clk_names); i++) { 1170 hdmi->clk[i] = of_clk_get_by_name(np, 1171 mtk_hdmi_clk_names[i]); 1172 if (IS_ERR(hdmi->clk[i])) 1173 return PTR_ERR(hdmi->clk[i]); 1174 } 1175 return 0; 1176} 1177 1178static int mtk_hdmi_clk_enable_audio(struct mtk_hdmi *hdmi) 1179{ 1180 int ret; 1181 1182 ret = clk_prepare_enable(hdmi->clk[MTK_HDMI_CLK_AUD_BCLK]); 1183 if (ret) 1184 return ret; 1185 1186 ret = clk_prepare_enable(hdmi->clk[MTK_HDMI_CLK_AUD_SPDIF]); 1187 if (ret) 1188 goto err; 1189 1190 return 0; 1191err: 1192 clk_disable_unprepare(hdmi->clk[MTK_HDMI_CLK_AUD_BCLK]); 1193 return ret; 1194} 1195 1196static void mtk_hdmi_clk_disable_audio(struct mtk_hdmi *hdmi) 1197{ 1198 clk_disable_unprepare(hdmi->clk[MTK_HDMI_CLK_AUD_BCLK]); 1199 clk_disable_unprepare(hdmi->clk[MTK_HDMI_CLK_AUD_SPDIF]); 1200} 1201 1202static enum drm_connector_status 1203mtk_hdmi_update_plugged_status(struct mtk_hdmi *hdmi) 1204{ 1205 bool connected; 1206 1207 mutex_lock(&hdmi->update_plugged_status_lock); 1208 connected = mtk_cec_hpd_high(hdmi->cec_dev); 1209 if (hdmi->plugged_cb && hdmi->codec_dev) 1210 hdmi->plugged_cb(hdmi->codec_dev, connected); 1211 mutex_unlock(&hdmi->update_plugged_status_lock); 1212 1213 return connected ? 1214 connector_status_connected : connector_status_disconnected; 1215} 1216 1217static enum drm_connector_status hdmi_conn_detect(struct drm_connector *conn, 1218 bool force) 1219{ 1220 struct mtk_hdmi *hdmi = hdmi_ctx_from_conn(conn); 1221 return mtk_hdmi_update_plugged_status(hdmi); 1222} 1223 1224static void hdmi_conn_destroy(struct drm_connector *conn) 1225{ 1226 struct mtk_hdmi *hdmi = hdmi_ctx_from_conn(conn); 1227 1228 mtk_cec_set_hpd_event(hdmi->cec_dev, NULL, NULL); 1229 1230 drm_connector_cleanup(conn); 1231} 1232 1233static int mtk_hdmi_conn_get_modes(struct drm_connector *conn) 1234{ 1235 struct mtk_hdmi *hdmi = hdmi_ctx_from_conn(conn); 1236 struct edid *edid; 1237 int ret; 1238 1239 if (!hdmi->ddc_adpt) 1240 return -ENODEV; 1241 1242 edid = drm_get_edid(conn, hdmi->ddc_adpt); 1243 if (!edid) 1244 return -ENODEV; 1245 1246 hdmi->dvi_mode = !drm_detect_monitor_audio(edid); 1247 1248 drm_connector_update_edid_property(conn, edid); 1249 1250 ret = drm_add_edid_modes(conn, edid); 1251 kfree(edid); 1252 return ret; 1253} 1254 1255static int mtk_hdmi_conn_mode_valid(struct drm_connector *conn, 1256 struct drm_display_mode *mode) 1257{ 1258 struct mtk_hdmi *hdmi = hdmi_ctx_from_conn(conn); 1259 struct drm_bridge *next_bridge; 1260 1261 dev_dbg(hdmi->dev, "xres=%d, yres=%d, refresh=%d, intl=%d clock=%d\n", 1262 mode->hdisplay, mode->vdisplay, drm_mode_vrefresh(mode), 1263 !!(mode->flags & DRM_MODE_FLAG_INTERLACE), mode->clock * 1000); 1264 1265 next_bridge = drm_bridge_get_next_bridge(&hdmi->bridge); 1266 if (next_bridge) { 1267 struct drm_display_mode adjusted_mode; 1268 1269 drm_mode_copy(&adjusted_mode, mode); 1270 if (!drm_bridge_chain_mode_fixup(next_bridge, mode, 1271 &adjusted_mode)) 1272 return MODE_BAD; 1273 } 1274 1275 if (mode->clock < 27000) 1276 return MODE_CLOCK_LOW; 1277 if (mode->clock > 297000) 1278 return MODE_CLOCK_HIGH; 1279 1280 return drm_mode_validate_size(mode, 0x1fff, 0x1fff); 1281} 1282 1283static struct drm_encoder *mtk_hdmi_conn_best_enc(struct drm_connector *conn) 1284{ 1285 struct mtk_hdmi *hdmi = hdmi_ctx_from_conn(conn); 1286 1287 return hdmi->bridge.encoder; 1288} 1289 1290static const struct drm_connector_funcs mtk_hdmi_connector_funcs = { 1291 .detect = hdmi_conn_detect, 1292 .fill_modes = drm_helper_probe_single_connector_modes, 1293 .destroy = hdmi_conn_destroy, 1294 .reset = drm_atomic_helper_connector_reset, 1295 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, 1296 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, 1297}; 1298 1299static const struct drm_connector_helper_funcs 1300 mtk_hdmi_connector_helper_funcs = { 1301 .get_modes = mtk_hdmi_conn_get_modes, 1302 .mode_valid = mtk_hdmi_conn_mode_valid, 1303 .best_encoder = mtk_hdmi_conn_best_enc, 1304}; 1305 1306static void mtk_hdmi_hpd_event(bool hpd, struct device *dev) 1307{ 1308 struct mtk_hdmi *hdmi = dev_get_drvdata(dev); 1309 1310 if (hdmi && hdmi->bridge.encoder && hdmi->bridge.encoder->dev) 1311 drm_helper_hpd_irq_event(hdmi->bridge.encoder->dev); 1312} 1313 1314/* 1315 * Bridge callbacks 1316 */ 1317 1318static int mtk_hdmi_bridge_attach(struct drm_bridge *bridge, 1319 enum drm_bridge_attach_flags flags) 1320{ 1321 struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge); 1322 int ret; 1323 1324 if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR) { 1325 DRM_ERROR("Fix bridge driver to make connector optional!"); 1326 return -EINVAL; 1327 } 1328 1329 ret = drm_connector_init_with_ddc(bridge->encoder->dev, &hdmi->conn, 1330 &mtk_hdmi_connector_funcs, 1331 DRM_MODE_CONNECTOR_HDMIA, 1332 hdmi->ddc_adpt); 1333 if (ret) { 1334 dev_err(hdmi->dev, "Failed to initialize connector: %d\n", ret); 1335 return ret; 1336 } 1337 drm_connector_helper_add(&hdmi->conn, &mtk_hdmi_connector_helper_funcs); 1338 1339 hdmi->conn.polled = DRM_CONNECTOR_POLL_HPD; 1340 hdmi->conn.interlace_allowed = true; 1341 hdmi->conn.doublescan_allowed = false; 1342 1343 ret = drm_connector_attach_encoder(&hdmi->conn, 1344 bridge->encoder); 1345 if (ret) { 1346 dev_err(hdmi->dev, 1347 "Failed to attach connector to encoder: %d\n", ret); 1348 return ret; 1349 } 1350 1351 if (hdmi->next_bridge) { 1352 ret = drm_bridge_attach(bridge->encoder, hdmi->next_bridge, 1353 bridge, flags); 1354 if (ret) { 1355 dev_err(hdmi->dev, 1356 "Failed to attach external bridge: %d\n", ret); 1357 return ret; 1358 } 1359 } 1360 1361 mtk_cec_set_hpd_event(hdmi->cec_dev, mtk_hdmi_hpd_event, hdmi->dev); 1362 1363 return 0; 1364} 1365 1366static bool mtk_hdmi_bridge_mode_fixup(struct drm_bridge *bridge, 1367 const struct drm_display_mode *mode, 1368 struct drm_display_mode *adjusted_mode) 1369{ 1370 return true; 1371} 1372 1373static void mtk_hdmi_bridge_disable(struct drm_bridge *bridge) 1374{ 1375 struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge); 1376 1377 if (!hdmi->enabled) 1378 return; 1379 1380 phy_power_off(hdmi->phy); 1381 clk_disable_unprepare(hdmi->clk[MTK_HDMI_CLK_HDMI_PIXEL]); 1382 clk_disable_unprepare(hdmi->clk[MTK_HDMI_CLK_HDMI_PLL]); 1383 1384 hdmi->enabled = false; 1385} 1386 1387static void mtk_hdmi_bridge_post_disable(struct drm_bridge *bridge) 1388{ 1389 struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge); 1390 1391 if (!hdmi->powered) 1392 return; 1393 1394 mtk_hdmi_hw_1p4_version_enable(hdmi, true); 1395 mtk_hdmi_hw_make_reg_writable(hdmi, false); 1396 1397 hdmi->powered = false; 1398} 1399 1400static void mtk_hdmi_bridge_mode_set(struct drm_bridge *bridge, 1401 const struct drm_display_mode *mode, 1402 const struct drm_display_mode *adjusted_mode) 1403{ 1404 struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge); 1405 1406 dev_dbg(hdmi->dev, "cur info: name:%s, hdisplay:%d\n", 1407 adjusted_mode->name, adjusted_mode->hdisplay); 1408 dev_dbg(hdmi->dev, "hsync_start:%d,hsync_end:%d, htotal:%d", 1409 adjusted_mode->hsync_start, adjusted_mode->hsync_end, 1410 adjusted_mode->htotal); 1411 dev_dbg(hdmi->dev, "hskew:%d, vdisplay:%d\n", 1412 adjusted_mode->hskew, adjusted_mode->vdisplay); 1413 dev_dbg(hdmi->dev, "vsync_start:%d, vsync_end:%d, vtotal:%d", 1414 adjusted_mode->vsync_start, adjusted_mode->vsync_end, 1415 adjusted_mode->vtotal); 1416 dev_dbg(hdmi->dev, "vscan:%d, flag:%d\n", 1417 adjusted_mode->vscan, adjusted_mode->flags); 1418 1419 drm_mode_copy(&hdmi->mode, adjusted_mode); 1420} 1421 1422static void mtk_hdmi_bridge_pre_enable(struct drm_bridge *bridge) 1423{ 1424 struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge); 1425 1426 mtk_hdmi_hw_make_reg_writable(hdmi, true); 1427 mtk_hdmi_hw_1p4_version_enable(hdmi, true); 1428 1429 hdmi->powered = true; 1430} 1431 1432static void mtk_hdmi_send_infoframe(struct mtk_hdmi *hdmi, 1433 struct drm_display_mode *mode) 1434{ 1435 mtk_hdmi_setup_audio_infoframe(hdmi); 1436 mtk_hdmi_setup_avi_infoframe(hdmi, mode); 1437 mtk_hdmi_setup_spd_infoframe(hdmi, "mediatek", "On-chip HDMI"); 1438 if (mode->flags & DRM_MODE_FLAG_3D_MASK) 1439 mtk_hdmi_setup_vendor_specific_infoframe(hdmi, mode); 1440} 1441 1442static void mtk_hdmi_bridge_enable(struct drm_bridge *bridge) 1443{ 1444 struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge); 1445 1446 mtk_hdmi_output_set_display_mode(hdmi, &hdmi->mode); 1447 clk_prepare_enable(hdmi->clk[MTK_HDMI_CLK_HDMI_PLL]); 1448 clk_prepare_enable(hdmi->clk[MTK_HDMI_CLK_HDMI_PIXEL]); 1449 phy_power_on(hdmi->phy); 1450 mtk_hdmi_send_infoframe(hdmi, &hdmi->mode); 1451 1452 hdmi->enabled = true; 1453} 1454 1455static const struct drm_bridge_funcs mtk_hdmi_bridge_funcs = { 1456 .attach = mtk_hdmi_bridge_attach, 1457 .mode_fixup = mtk_hdmi_bridge_mode_fixup, 1458 .disable = mtk_hdmi_bridge_disable, 1459 .post_disable = mtk_hdmi_bridge_post_disable, 1460 .mode_set = mtk_hdmi_bridge_mode_set, 1461 .pre_enable = mtk_hdmi_bridge_pre_enable, 1462 .enable = mtk_hdmi_bridge_enable, 1463}; 1464 1465static int mtk_hdmi_dt_parse_pdata(struct mtk_hdmi *hdmi, 1466 struct platform_device *pdev) 1467{ 1468 struct device *dev = &pdev->dev; 1469 struct device_node *np = dev->of_node; 1470 struct device_node *cec_np, *remote, *i2c_np; 1471 struct platform_device *cec_pdev; 1472 struct regmap *regmap; 1473 struct resource *mem; 1474 int ret; 1475 1476 ret = mtk_hdmi_get_all_clk(hdmi, np); 1477 if (ret) { 1478 if (ret != -EPROBE_DEFER) 1479 dev_err(dev, "Failed to get clocks: %d\n", ret); 1480 1481 return ret; 1482 } 1483 1484 /* The CEC module handles HDMI hotplug detection */ 1485 cec_np = of_get_compatible_child(np->parent, "mediatek,mt8173-cec"); 1486 if (!cec_np) { 1487 dev_err(dev, "Failed to find CEC node\n"); 1488 return -EINVAL; 1489 } 1490 1491 cec_pdev = of_find_device_by_node(cec_np); 1492 if (!cec_pdev) { 1493 dev_err(hdmi->dev, "Waiting for CEC device %pOF\n", 1494 cec_np); 1495 of_node_put(cec_np); 1496 return -EPROBE_DEFER; 1497 } 1498 of_node_put(cec_np); 1499 hdmi->cec_dev = &cec_pdev->dev; 1500 1501 /* 1502 * The mediatek,syscon-hdmi property contains a phandle link to the 1503 * MMSYS_CONFIG device and the register offset of the HDMI_SYS_CFG 1504 * registers it contains. 1505 */ 1506 regmap = syscon_regmap_lookup_by_phandle(np, "mediatek,syscon-hdmi"); 1507 ret = of_property_read_u32_index(np, "mediatek,syscon-hdmi", 1, 1508 &hdmi->sys_offset); 1509 if (IS_ERR(regmap)) 1510 ret = PTR_ERR(regmap); 1511 if (ret) { 1512 dev_err(dev, 1513 "Failed to get system configuration registers: %d\n", 1514 ret); 1515 goto put_device; 1516 } 1517 hdmi->sys_regmap = regmap; 1518 1519 mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); 1520 hdmi->regs = devm_ioremap_resource(dev, mem); 1521 if (IS_ERR(hdmi->regs)) { 1522 ret = PTR_ERR(hdmi->regs); 1523 goto put_device; 1524 } 1525 1526 remote = of_graph_get_remote_node(np, 1, 0); 1527 if (!remote) { 1528 ret = -EINVAL; 1529 goto put_device; 1530 } 1531 1532 if (!of_device_is_compatible(remote, "hdmi-connector")) { 1533 hdmi->next_bridge = of_drm_find_bridge(remote); 1534 if (!hdmi->next_bridge) { 1535 dev_err(dev, "Waiting for external bridge\n"); 1536 of_node_put(remote); 1537 ret = -EPROBE_DEFER; 1538 goto put_device; 1539 } 1540 } 1541 1542 i2c_np = of_parse_phandle(remote, "ddc-i2c-bus", 0); 1543 if (!i2c_np) { 1544 dev_err(dev, "Failed to find ddc-i2c-bus node in %pOF\n", 1545 remote); 1546 of_node_put(remote); 1547 ret = -EINVAL; 1548 goto put_device; 1549 } 1550 of_node_put(remote); 1551 1552 hdmi->ddc_adpt = of_find_i2c_adapter_by_node(i2c_np); 1553 of_node_put(i2c_np); 1554 if (!hdmi->ddc_adpt) { 1555 dev_err(dev, "Failed to get ddc i2c adapter by node\n"); 1556 ret = -EINVAL; 1557 goto put_device; 1558 } 1559 1560 return 0; 1561put_device: 1562 put_device(hdmi->cec_dev); 1563 return ret; 1564} 1565 1566/* 1567 * HDMI audio codec callbacks 1568 */ 1569 1570static int mtk_hdmi_audio_hw_params(struct device *dev, void *data, 1571 struct hdmi_codec_daifmt *daifmt, 1572 struct hdmi_codec_params *params) 1573{ 1574 struct mtk_hdmi *hdmi = dev_get_drvdata(dev); 1575 struct hdmi_audio_param hdmi_params; 1576 unsigned int chan = params->cea.channels; 1577 1578 dev_dbg(hdmi->dev, "%s: %u Hz, %d bit, %d channels\n", __func__, 1579 params->sample_rate, params->sample_width, chan); 1580 1581 if (!hdmi->bridge.encoder) 1582 return -ENODEV; 1583 1584 switch (chan) { 1585 case 2: 1586 hdmi_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_2_0; 1587 break; 1588 case 4: 1589 hdmi_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_4_0; 1590 break; 1591 case 6: 1592 hdmi_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_5_1; 1593 break; 1594 case 8: 1595 hdmi_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_7_1; 1596 break; 1597 default: 1598 dev_err(hdmi->dev, "channel[%d] not supported!\n", chan); 1599 return -EINVAL; 1600 } 1601 1602 switch (params->sample_rate) { 1603 case 32000: 1604 case 44100: 1605 case 48000: 1606 case 88200: 1607 case 96000: 1608 case 176400: 1609 case 192000: 1610 break; 1611 default: 1612 dev_err(hdmi->dev, "rate[%d] not supported!\n", 1613 params->sample_rate); 1614 return -EINVAL; 1615 } 1616 1617 switch (daifmt->fmt) { 1618 case HDMI_I2S: 1619 hdmi_params.aud_codec = HDMI_AUDIO_CODING_TYPE_PCM; 1620 hdmi_params.aud_sampe_size = HDMI_AUDIO_SAMPLE_SIZE_16; 1621 hdmi_params.aud_input_type = HDMI_AUD_INPUT_I2S; 1622 hdmi_params.aud_i2s_fmt = HDMI_I2S_MODE_I2S_24BIT; 1623 hdmi_params.aud_mclk = HDMI_AUD_MCLK_128FS; 1624 break; 1625 case HDMI_SPDIF: 1626 hdmi_params.aud_codec = HDMI_AUDIO_CODING_TYPE_PCM; 1627 hdmi_params.aud_sampe_size = HDMI_AUDIO_SAMPLE_SIZE_16; 1628 hdmi_params.aud_input_type = HDMI_AUD_INPUT_SPDIF; 1629 break; 1630 default: 1631 dev_err(hdmi->dev, "%s: Invalid DAI format %d\n", __func__, 1632 daifmt->fmt); 1633 return -EINVAL; 1634 } 1635 1636 memcpy(&hdmi_params.codec_params, params, 1637 sizeof(hdmi_params.codec_params)); 1638 1639 mtk_hdmi_audio_set_param(hdmi, &hdmi_params); 1640 1641 return 0; 1642} 1643 1644static int mtk_hdmi_audio_startup(struct device *dev, void *data) 1645{ 1646 struct mtk_hdmi *hdmi = dev_get_drvdata(dev); 1647 1648 mtk_hdmi_audio_enable(hdmi); 1649 1650 return 0; 1651} 1652 1653static void mtk_hdmi_audio_shutdown(struct device *dev, void *data) 1654{ 1655 struct mtk_hdmi *hdmi = dev_get_drvdata(dev); 1656 1657 mtk_hdmi_audio_disable(hdmi); 1658} 1659 1660static int 1661mtk_hdmi_audio_mute(struct device *dev, void *data, 1662 bool enable, int direction) 1663{ 1664 struct mtk_hdmi *hdmi = dev_get_drvdata(dev); 1665 1666 if (enable) 1667 mtk_hdmi_hw_aud_mute(hdmi); 1668 else 1669 mtk_hdmi_hw_aud_unmute(hdmi); 1670 1671 return 0; 1672} 1673 1674static int mtk_hdmi_audio_get_eld(struct device *dev, void *data, uint8_t *buf, size_t len) 1675{ 1676 struct mtk_hdmi *hdmi = dev_get_drvdata(dev); 1677 1678 memcpy(buf, hdmi->conn.eld, min(sizeof(hdmi->conn.eld), len)); 1679 1680 return 0; 1681} 1682 1683static int mtk_hdmi_audio_hook_plugged_cb(struct device *dev, void *data, 1684 hdmi_codec_plugged_cb fn, 1685 struct device *codec_dev) 1686{ 1687 struct mtk_hdmi *hdmi = data; 1688 1689 mutex_lock(&hdmi->update_plugged_status_lock); 1690 hdmi->plugged_cb = fn; 1691 hdmi->codec_dev = codec_dev; 1692 mutex_unlock(&hdmi->update_plugged_status_lock); 1693 1694 mtk_hdmi_update_plugged_status(hdmi); 1695 1696 return 0; 1697} 1698 1699static const struct hdmi_codec_ops mtk_hdmi_audio_codec_ops = { 1700 .hw_params = mtk_hdmi_audio_hw_params, 1701 .audio_startup = mtk_hdmi_audio_startup, 1702 .audio_shutdown = mtk_hdmi_audio_shutdown, 1703 .mute_stream = mtk_hdmi_audio_mute, 1704 .get_eld = mtk_hdmi_audio_get_eld, 1705 .hook_plugged_cb = mtk_hdmi_audio_hook_plugged_cb, 1706 .no_capture_mute = 1, 1707}; 1708 1709static int mtk_hdmi_register_audio_driver(struct device *dev) 1710{ 1711 struct mtk_hdmi *hdmi = dev_get_drvdata(dev); 1712 struct hdmi_codec_pdata codec_data = { 1713 .ops = &mtk_hdmi_audio_codec_ops, 1714 .max_i2s_channels = 2, 1715 .i2s = 1, 1716 .data = hdmi, 1717 }; 1718 struct platform_device *pdev; 1719 1720 pdev = platform_device_register_data(dev, HDMI_CODEC_DRV_NAME, 1721 PLATFORM_DEVID_AUTO, &codec_data, 1722 sizeof(codec_data)); 1723 if (IS_ERR(pdev)) 1724 return PTR_ERR(pdev); 1725 1726 DRM_INFO("%s driver bound to HDMI\n", HDMI_CODEC_DRV_NAME); 1727 return 0; 1728} 1729 1730static int mtk_drm_hdmi_probe(struct platform_device *pdev) 1731{ 1732 struct mtk_hdmi *hdmi; 1733 struct device *dev = &pdev->dev; 1734 int ret; 1735 1736 hdmi = devm_kzalloc(dev, sizeof(*hdmi), GFP_KERNEL); 1737 if (!hdmi) 1738 return -ENOMEM; 1739 1740 hdmi->dev = dev; 1741 hdmi->conf = of_device_get_match_data(dev); 1742 1743 ret = mtk_hdmi_dt_parse_pdata(hdmi, pdev); 1744 if (ret) 1745 return ret; 1746 1747 hdmi->phy = devm_phy_get(dev, "hdmi"); 1748 if (IS_ERR(hdmi->phy)) { 1749 ret = PTR_ERR(hdmi->phy); 1750 dev_err(dev, "Failed to get HDMI PHY: %d\n", ret); 1751 return ret; 1752 } 1753 1754 mutex_init(&hdmi->update_plugged_status_lock); 1755 platform_set_drvdata(pdev, hdmi); 1756 1757 ret = mtk_hdmi_output_init(hdmi); 1758 if (ret) { 1759 dev_err(dev, "Failed to initialize hdmi output\n"); 1760 return ret; 1761 } 1762 1763 ret = mtk_hdmi_register_audio_driver(dev); 1764 if (ret) { 1765 dev_err(dev, "Failed to register audio driver: %d\n", ret); 1766 return ret; 1767 } 1768 1769 hdmi->bridge.funcs = &mtk_hdmi_bridge_funcs; 1770 hdmi->bridge.of_node = pdev->dev.of_node; 1771 drm_bridge_add(&hdmi->bridge); 1772 1773 ret = mtk_hdmi_clk_enable_audio(hdmi); 1774 if (ret) { 1775 dev_err(dev, "Failed to enable audio clocks: %d\n", ret); 1776 goto err_bridge_remove; 1777 } 1778 1779 return 0; 1780 1781err_bridge_remove: 1782 drm_bridge_remove(&hdmi->bridge); 1783 return ret; 1784} 1785 1786static int mtk_drm_hdmi_remove(struct platform_device *pdev) 1787{ 1788 struct mtk_hdmi *hdmi = platform_get_drvdata(pdev); 1789 1790 drm_bridge_remove(&hdmi->bridge); 1791 mtk_hdmi_clk_disable_audio(hdmi); 1792 return 0; 1793} 1794 1795#ifdef CONFIG_PM_SLEEP 1796static int mtk_hdmi_suspend(struct device *dev) 1797{ 1798 struct mtk_hdmi *hdmi = dev_get_drvdata(dev); 1799 1800 mtk_hdmi_clk_disable_audio(hdmi); 1801 1802 return 0; 1803} 1804 1805static int mtk_hdmi_resume(struct device *dev) 1806{ 1807 struct mtk_hdmi *hdmi = dev_get_drvdata(dev); 1808 int ret = 0; 1809 1810 ret = mtk_hdmi_clk_enable_audio(hdmi); 1811 if (ret) { 1812 dev_err(dev, "hdmi resume failed!\n"); 1813 return ret; 1814 } 1815 1816 return 0; 1817} 1818#endif 1819static SIMPLE_DEV_PM_OPS(mtk_hdmi_pm_ops, 1820 mtk_hdmi_suspend, mtk_hdmi_resume); 1821 1822static const struct mtk_hdmi_conf mtk_hdmi_conf_mt2701 = { 1823 .tz_disabled = true, 1824}; 1825 1826static const struct of_device_id mtk_drm_hdmi_of_ids[] = { 1827 { .compatible = "mediatek,mt2701-hdmi", 1828 .data = &mtk_hdmi_conf_mt2701, 1829 }, 1830 { .compatible = "mediatek,mt8173-hdmi", 1831 }, 1832 {} 1833}; 1834 1835static struct platform_driver mtk_hdmi_driver = { 1836 .probe = mtk_drm_hdmi_probe, 1837 .remove = mtk_drm_hdmi_remove, 1838 .driver = { 1839 .name = "mediatek-drm-hdmi", 1840 .of_match_table = mtk_drm_hdmi_of_ids, 1841 .pm = &mtk_hdmi_pm_ops, 1842 }, 1843}; 1844 1845static struct platform_driver * const mtk_hdmi_drivers[] = { 1846 &mtk_hdmi_ddc_driver, 1847 &mtk_cec_driver, 1848 &mtk_hdmi_driver, 1849}; 1850 1851static int __init mtk_hdmitx_init(void) 1852{ 1853 return platform_register_drivers(mtk_hdmi_drivers, 1854 ARRAY_SIZE(mtk_hdmi_drivers)); 1855} 1856 1857static void __exit mtk_hdmitx_exit(void) 1858{ 1859 platform_unregister_drivers(mtk_hdmi_drivers, 1860 ARRAY_SIZE(mtk_hdmi_drivers)); 1861} 1862 1863module_init(mtk_hdmitx_init); 1864module_exit(mtk_hdmitx_exit); 1865 1866MODULE_AUTHOR("Jie Qiu <jie.qiu@mediatek.com>"); 1867MODULE_DESCRIPTION("MediaTek HDMI Driver"); 1868MODULE_LICENSE("GPL v2"); 1869