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