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 unsigned long max_mode_clock; 153 }; 154 155 struct mtk_hdmi { 156 struct drm_bridge bridge; 157 struct drm_bridge *next_bridge; 158 struct drm_connector *curr_conn;/* current connector (only valid when 'enabled') */ 159 struct device *dev; 160 const struct mtk_hdmi_conf *conf; 161 struct phy *phy; 162 struct device *cec_dev; 163 struct i2c_adapter *ddc_adpt; 164 struct clk *clk[MTK_HDMI_CLK_COUNT]; 165 struct drm_display_mode mode; 166 bool dvi_mode; 167 u32 min_clock; 168 u32 max_clock; 169 u32 max_hdisplay; 170 u32 max_vdisplay; 171 u32 ibias; 172 u32 ibias_up; 173 struct regmap *sys_regmap; 174 unsigned int sys_offset; 175 void __iomem *regs; 176 enum hdmi_colorspace csp; 177 struct hdmi_audio_param aud_param; 178 bool audio_enable; 179 bool powered; 180 bool enabled; 181 hdmi_codec_plugged_cb plugged_cb; 182 struct device *codec_dev; 183 struct mutex update_plugged_status_lock; 184 }; 185 186 static inline struct mtk_hdmi *hdmi_ctx_from_bridge(struct drm_bridge *b) 187 { 188 return container_of(b, struct mtk_hdmi, bridge); 189 } 190 191 static u32 mtk_hdmi_read(struct mtk_hdmi *hdmi, u32 offset) 192 { 193 return readl(hdmi->regs + offset); 194 } 195 196 static void mtk_hdmi_write(struct mtk_hdmi *hdmi, u32 offset, u32 val) 197 { 198 writel(val, hdmi->regs + offset); 199 } 200 201 static void mtk_hdmi_clear_bits(struct mtk_hdmi *hdmi, u32 offset, u32 bits) 202 { 203 void __iomem *reg = hdmi->regs + offset; 204 u32 tmp; 205 206 tmp = readl(reg); 207 tmp &= ~bits; 208 writel(tmp, reg); 209 } 210 211 static void mtk_hdmi_set_bits(struct mtk_hdmi *hdmi, u32 offset, u32 bits) 212 { 213 void __iomem *reg = hdmi->regs + offset; 214 u32 tmp; 215 216 tmp = readl(reg); 217 tmp |= bits; 218 writel(tmp, reg); 219 } 220 221 static void mtk_hdmi_mask(struct mtk_hdmi *hdmi, u32 offset, u32 val, u32 mask) 222 { 223 void __iomem *reg = hdmi->regs + offset; 224 u32 tmp; 225 226 tmp = readl(reg); 227 tmp = (tmp & ~mask) | (val & mask); 228 writel(tmp, reg); 229 } 230 231 static void mtk_hdmi_hw_vid_black(struct mtk_hdmi *hdmi, bool black) 232 { 233 mtk_hdmi_mask(hdmi, VIDEO_CFG_4, black ? GEN_RGB : NORMAL_PATH, 234 VIDEO_SOURCE_SEL); 235 } 236 237 static void mtk_hdmi_hw_make_reg_writable(struct mtk_hdmi *hdmi, bool enable) 238 { 239 struct arm_smccc_res res; 240 241 /* 242 * MT8173 HDMI hardware has an output control bit to enable/disable HDMI 243 * output. This bit can only be controlled in ARM supervisor mode. 244 * The ARM trusted firmware provides an API for the HDMI driver to set 245 * this control bit to enable HDMI output in supervisor mode. 246 */ 247 if (hdmi->conf && hdmi->conf->tz_disabled) 248 regmap_update_bits(hdmi->sys_regmap, 249 hdmi->sys_offset + HDMI_SYS_CFG20, 250 0x80008005, enable ? 0x80000005 : 0x8000); 251 else 252 arm_smccc_smc(MTK_SIP_SET_AUTHORIZED_SECURE_REG, 0x14000904, 253 0x80000000, 0, 0, 0, 0, 0, &res); 254 255 regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG20, 256 HDMI_PCLK_FREE_RUN, enable ? HDMI_PCLK_FREE_RUN : 0); 257 regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG1C, 258 HDMI_ON | ANLG_ON, enable ? (HDMI_ON | ANLG_ON) : 0); 259 } 260 261 static void mtk_hdmi_hw_1p4_version_enable(struct mtk_hdmi *hdmi, bool enable) 262 { 263 regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG20, 264 HDMI2P0_EN, enable ? 0 : HDMI2P0_EN); 265 } 266 267 static void mtk_hdmi_hw_aud_mute(struct mtk_hdmi *hdmi) 268 { 269 mtk_hdmi_set_bits(hdmi, GRL_AUDIO_CFG, AUDIO_ZERO); 270 } 271 272 static void mtk_hdmi_hw_aud_unmute(struct mtk_hdmi *hdmi) 273 { 274 mtk_hdmi_clear_bits(hdmi, GRL_AUDIO_CFG, AUDIO_ZERO); 275 } 276 277 static void mtk_hdmi_hw_reset(struct mtk_hdmi *hdmi) 278 { 279 regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG1C, 280 HDMI_RST, HDMI_RST); 281 regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG1C, 282 HDMI_RST, 0); 283 mtk_hdmi_clear_bits(hdmi, GRL_CFG3, CFG3_CONTROL_PACKET_DELAY); 284 regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG1C, 285 ANLG_ON, ANLG_ON); 286 } 287 288 static void mtk_hdmi_hw_enable_notice(struct mtk_hdmi *hdmi, bool enable_notice) 289 { 290 mtk_hdmi_mask(hdmi, GRL_CFG2, enable_notice ? CFG2_NOTICE_EN : 0, 291 CFG2_NOTICE_EN); 292 } 293 294 static void mtk_hdmi_hw_write_int_mask(struct mtk_hdmi *hdmi, u32 int_mask) 295 { 296 mtk_hdmi_write(hdmi, GRL_INT_MASK, int_mask); 297 } 298 299 static void mtk_hdmi_hw_enable_dvi_mode(struct mtk_hdmi *hdmi, bool enable) 300 { 301 mtk_hdmi_mask(hdmi, GRL_CFG1, enable ? CFG1_DVI : 0, CFG1_DVI); 302 } 303 304 static void mtk_hdmi_hw_send_info_frame(struct mtk_hdmi *hdmi, u8 *buffer, 305 u8 len) 306 { 307 u32 ctrl_reg = GRL_CTRL; 308 int i; 309 u8 *frame_data; 310 enum hdmi_infoframe_type frame_type; 311 u8 frame_ver; 312 u8 frame_len; 313 u8 checksum; 314 int ctrl_frame_en = 0; 315 316 frame_type = *buffer++; 317 frame_ver = *buffer++; 318 frame_len = *buffer++; 319 checksum = *buffer++; 320 frame_data = buffer; 321 322 dev_dbg(hdmi->dev, 323 "frame_type:0x%x,frame_ver:0x%x,frame_len:0x%x,checksum:0x%x\n", 324 frame_type, frame_ver, frame_len, checksum); 325 326 switch (frame_type) { 327 case HDMI_INFOFRAME_TYPE_AVI: 328 ctrl_frame_en = CTRL_AVI_EN; 329 ctrl_reg = GRL_CTRL; 330 break; 331 case HDMI_INFOFRAME_TYPE_SPD: 332 ctrl_frame_en = CTRL_SPD_EN; 333 ctrl_reg = GRL_CTRL; 334 break; 335 case HDMI_INFOFRAME_TYPE_AUDIO: 336 ctrl_frame_en = CTRL_AUDIO_EN; 337 ctrl_reg = GRL_CTRL; 338 break; 339 case HDMI_INFOFRAME_TYPE_VENDOR: 340 ctrl_frame_en = VS_EN; 341 ctrl_reg = GRL_ACP_ISRC_CTRL; 342 break; 343 default: 344 dev_err(hdmi->dev, "Unknown infoframe type %d\n", frame_type); 345 return; 346 } 347 mtk_hdmi_clear_bits(hdmi, ctrl_reg, ctrl_frame_en); 348 mtk_hdmi_write(hdmi, GRL_INFOFRM_TYPE, frame_type); 349 mtk_hdmi_write(hdmi, GRL_INFOFRM_VER, frame_ver); 350 mtk_hdmi_write(hdmi, GRL_INFOFRM_LNG, frame_len); 351 352 mtk_hdmi_write(hdmi, GRL_IFM_PORT, checksum); 353 for (i = 0; i < frame_len; i++) 354 mtk_hdmi_write(hdmi, GRL_IFM_PORT, frame_data[i]); 355 356 mtk_hdmi_set_bits(hdmi, ctrl_reg, ctrl_frame_en); 357 } 358 359 static void mtk_hdmi_hw_send_aud_packet(struct mtk_hdmi *hdmi, bool enable) 360 { 361 mtk_hdmi_mask(hdmi, GRL_SHIFT_R2, enable ? 0 : AUDIO_PACKET_OFF, 362 AUDIO_PACKET_OFF); 363 } 364 365 static void mtk_hdmi_hw_config_sys(struct mtk_hdmi *hdmi) 366 { 367 regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG20, 368 HDMI_OUT_FIFO_EN | MHL_MODE_ON, 0); 369 usleep_range(2000, 4000); 370 regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG20, 371 HDMI_OUT_FIFO_EN | MHL_MODE_ON, HDMI_OUT_FIFO_EN); 372 } 373 374 static void mtk_hdmi_hw_set_deep_color_mode(struct mtk_hdmi *hdmi) 375 { 376 regmap_update_bits(hdmi->sys_regmap, hdmi->sys_offset + HDMI_SYS_CFG20, 377 DEEP_COLOR_MODE_MASK | DEEP_COLOR_EN, 378 COLOR_8BIT_MODE); 379 } 380 381 static void mtk_hdmi_hw_send_av_mute(struct mtk_hdmi *hdmi) 382 { 383 mtk_hdmi_clear_bits(hdmi, GRL_CFG4, CTRL_AVMUTE); 384 usleep_range(2000, 4000); 385 mtk_hdmi_set_bits(hdmi, GRL_CFG4, CTRL_AVMUTE); 386 } 387 388 static void mtk_hdmi_hw_send_av_unmute(struct mtk_hdmi *hdmi) 389 { 390 mtk_hdmi_mask(hdmi, GRL_CFG4, CFG4_AV_UNMUTE_EN, 391 CFG4_AV_UNMUTE_EN | CFG4_AV_UNMUTE_SET); 392 usleep_range(2000, 4000); 393 mtk_hdmi_mask(hdmi, GRL_CFG4, CFG4_AV_UNMUTE_SET, 394 CFG4_AV_UNMUTE_EN | CFG4_AV_UNMUTE_SET); 395 } 396 397 static void mtk_hdmi_hw_ncts_enable(struct mtk_hdmi *hdmi, bool on) 398 { 399 mtk_hdmi_mask(hdmi, GRL_CTS_CTRL, on ? 0 : CTS_CTRL_SOFT, 400 CTS_CTRL_SOFT); 401 } 402 403 static void mtk_hdmi_hw_ncts_auto_write_enable(struct mtk_hdmi *hdmi, 404 bool enable) 405 { 406 mtk_hdmi_mask(hdmi, GRL_CTS_CTRL, enable ? NCTS_WRI_ANYTIME : 0, 407 NCTS_WRI_ANYTIME); 408 } 409 410 static void mtk_hdmi_hw_msic_setting(struct mtk_hdmi *hdmi, 411 struct drm_display_mode *mode) 412 { 413 mtk_hdmi_clear_bits(hdmi, GRL_CFG4, CFG4_MHL_MODE); 414 415 if (mode->flags & DRM_MODE_FLAG_INTERLACE && 416 mode->clock == 74250 && 417 mode->vdisplay == 1080) 418 mtk_hdmi_clear_bits(hdmi, GRL_CFG2, CFG2_MHL_DE_SEL); 419 else 420 mtk_hdmi_set_bits(hdmi, GRL_CFG2, CFG2_MHL_DE_SEL); 421 } 422 423 static void mtk_hdmi_hw_aud_set_channel_swap(struct mtk_hdmi *hdmi, 424 enum hdmi_aud_channel_swap_type swap) 425 { 426 u8 swap_bit; 427 428 switch (swap) { 429 case HDMI_AUD_SWAP_LR: 430 swap_bit = LR_SWAP; 431 break; 432 case HDMI_AUD_SWAP_LFE_CC: 433 swap_bit = LFE_CC_SWAP; 434 break; 435 case HDMI_AUD_SWAP_LSRS: 436 swap_bit = LSRS_SWAP; 437 break; 438 case HDMI_AUD_SWAP_RLS_RRS: 439 swap_bit = RLS_RRS_SWAP; 440 break; 441 case HDMI_AUD_SWAP_LR_STATUS: 442 swap_bit = LR_STATUS_SWAP; 443 break; 444 default: 445 swap_bit = LFE_CC_SWAP; 446 break; 447 } 448 mtk_hdmi_mask(hdmi, GRL_CH_SWAP, swap_bit, 0xff); 449 } 450 451 static void mtk_hdmi_hw_aud_set_bit_num(struct mtk_hdmi *hdmi, 452 enum hdmi_audio_sample_size bit_num) 453 { 454 u32 val; 455 456 switch (bit_num) { 457 case HDMI_AUDIO_SAMPLE_SIZE_16: 458 val = AOUT_16BIT; 459 break; 460 case HDMI_AUDIO_SAMPLE_SIZE_20: 461 val = AOUT_20BIT; 462 break; 463 case HDMI_AUDIO_SAMPLE_SIZE_24: 464 case HDMI_AUDIO_SAMPLE_SIZE_STREAM: 465 val = AOUT_24BIT; 466 break; 467 } 468 469 mtk_hdmi_mask(hdmi, GRL_AOUT_CFG, val, AOUT_BNUM_SEL_MASK); 470 } 471 472 static void mtk_hdmi_hw_aud_set_i2s_fmt(struct mtk_hdmi *hdmi, 473 enum hdmi_aud_i2s_fmt i2s_fmt) 474 { 475 u32 val; 476 477 val = mtk_hdmi_read(hdmi, GRL_CFG0); 478 val &= ~(CFG0_W_LENGTH_MASK | CFG0_I2S_MODE_MASK); 479 480 switch (i2s_fmt) { 481 case HDMI_I2S_MODE_RJT_24BIT: 482 val |= CFG0_I2S_MODE_RTJ | CFG0_W_LENGTH_24BIT; 483 break; 484 case HDMI_I2S_MODE_RJT_16BIT: 485 val |= CFG0_I2S_MODE_RTJ | CFG0_W_LENGTH_16BIT; 486 break; 487 case HDMI_I2S_MODE_LJT_24BIT: 488 default: 489 val |= CFG0_I2S_MODE_LTJ | CFG0_W_LENGTH_24BIT; 490 break; 491 case HDMI_I2S_MODE_LJT_16BIT: 492 val |= CFG0_I2S_MODE_LTJ | CFG0_W_LENGTH_16BIT; 493 break; 494 case HDMI_I2S_MODE_I2S_24BIT: 495 val |= CFG0_I2S_MODE_I2S | CFG0_W_LENGTH_24BIT; 496 break; 497 case HDMI_I2S_MODE_I2S_16BIT: 498 val |= CFG0_I2S_MODE_I2S | CFG0_W_LENGTH_16BIT; 499 break; 500 } 501 mtk_hdmi_write(hdmi, GRL_CFG0, val); 502 } 503 504 static void mtk_hdmi_hw_audio_config(struct mtk_hdmi *hdmi, bool dst) 505 { 506 const u8 mask = HIGH_BIT_RATE | DST_NORMAL_DOUBLE | SACD_DST | DSD_SEL; 507 u8 val; 508 509 /* Disable high bitrate, set DST packet normal/double */ 510 mtk_hdmi_clear_bits(hdmi, GRL_AOUT_CFG, HIGH_BIT_RATE_PACKET_ALIGN); 511 512 if (dst) 513 val = DST_NORMAL_DOUBLE | SACD_DST; 514 else 515 val = 0; 516 517 mtk_hdmi_mask(hdmi, GRL_AUDIO_CFG, val, mask); 518 } 519 520 static void mtk_hdmi_hw_aud_set_i2s_chan_num(struct mtk_hdmi *hdmi, 521 enum hdmi_aud_channel_type channel_type, 522 u8 channel_count) 523 { 524 unsigned int ch_switch; 525 u8 i2s_uv; 526 527 ch_switch = CH_SWITCH(7, 7) | CH_SWITCH(6, 6) | 528 CH_SWITCH(5, 5) | CH_SWITCH(4, 4) | 529 CH_SWITCH(3, 3) | CH_SWITCH(1, 2) | 530 CH_SWITCH(2, 1) | CH_SWITCH(0, 0); 531 532 if (channel_count == 2) { 533 i2s_uv = I2S_UV_CH_EN(0); 534 } else if (channel_count == 3 || channel_count == 4) { 535 if (channel_count == 4 && 536 (channel_type == HDMI_AUD_CHAN_TYPE_3_0_LRS || 537 channel_type == HDMI_AUD_CHAN_TYPE_4_0)) 538 i2s_uv = I2S_UV_CH_EN(2) | I2S_UV_CH_EN(0); 539 else 540 i2s_uv = I2S_UV_CH_EN(3) | I2S_UV_CH_EN(2); 541 } else if (channel_count == 6 || channel_count == 5) { 542 if (channel_count == 6 && 543 channel_type != HDMI_AUD_CHAN_TYPE_5_1 && 544 channel_type != HDMI_AUD_CHAN_TYPE_4_1_CLRS) { 545 i2s_uv = I2S_UV_CH_EN(3) | I2S_UV_CH_EN(2) | 546 I2S_UV_CH_EN(1) | I2S_UV_CH_EN(0); 547 } else { 548 i2s_uv = I2S_UV_CH_EN(2) | I2S_UV_CH_EN(1) | 549 I2S_UV_CH_EN(0); 550 } 551 } else if (channel_count == 8 || channel_count == 7) { 552 i2s_uv = I2S_UV_CH_EN(3) | I2S_UV_CH_EN(2) | 553 I2S_UV_CH_EN(1) | I2S_UV_CH_EN(0); 554 } else { 555 i2s_uv = I2S_UV_CH_EN(0); 556 } 557 558 mtk_hdmi_write(hdmi, GRL_CH_SW0, ch_switch & 0xff); 559 mtk_hdmi_write(hdmi, GRL_CH_SW1, (ch_switch >> 8) & 0xff); 560 mtk_hdmi_write(hdmi, GRL_CH_SW2, (ch_switch >> 16) & 0xff); 561 mtk_hdmi_write(hdmi, GRL_I2S_UV, i2s_uv); 562 } 563 564 static void mtk_hdmi_hw_aud_set_input_type(struct mtk_hdmi *hdmi, 565 enum hdmi_aud_input_type input_type) 566 { 567 u32 val; 568 569 val = mtk_hdmi_read(hdmi, GRL_CFG1); 570 if (input_type == HDMI_AUD_INPUT_I2S && 571 (val & CFG1_SPDIF) == CFG1_SPDIF) { 572 val &= ~CFG1_SPDIF; 573 } else if (input_type == HDMI_AUD_INPUT_SPDIF && 574 (val & CFG1_SPDIF) == 0) { 575 val |= CFG1_SPDIF; 576 } 577 mtk_hdmi_write(hdmi, GRL_CFG1, val); 578 } 579 580 static void mtk_hdmi_hw_aud_set_channel_status(struct mtk_hdmi *hdmi, 581 u8 *channel_status) 582 { 583 int i; 584 585 for (i = 0; i < 5; i++) { 586 mtk_hdmi_write(hdmi, GRL_I2S_C_STA0 + i * 4, channel_status[i]); 587 mtk_hdmi_write(hdmi, GRL_L_STATUS_0 + i * 4, channel_status[i]); 588 mtk_hdmi_write(hdmi, GRL_R_STATUS_0 + i * 4, channel_status[i]); 589 } 590 for (; i < 24; i++) { 591 mtk_hdmi_write(hdmi, GRL_L_STATUS_0 + i * 4, 0); 592 mtk_hdmi_write(hdmi, GRL_R_STATUS_0 + i * 4, 0); 593 } 594 } 595 596 static void mtk_hdmi_hw_aud_src_reenable(struct mtk_hdmi *hdmi) 597 { 598 u32 val; 599 600 val = mtk_hdmi_read(hdmi, GRL_MIX_CTRL); 601 if (val & MIX_CTRL_SRC_EN) { 602 val &= ~MIX_CTRL_SRC_EN; 603 mtk_hdmi_write(hdmi, GRL_MIX_CTRL, val); 604 usleep_range(255, 512); 605 val |= MIX_CTRL_SRC_EN; 606 mtk_hdmi_write(hdmi, GRL_MIX_CTRL, val); 607 } 608 } 609 610 static void mtk_hdmi_hw_aud_src_disable(struct mtk_hdmi *hdmi) 611 { 612 u32 val; 613 614 val = mtk_hdmi_read(hdmi, GRL_MIX_CTRL); 615 val &= ~MIX_CTRL_SRC_EN; 616 mtk_hdmi_write(hdmi, GRL_MIX_CTRL, val); 617 mtk_hdmi_write(hdmi, GRL_SHIFT_L1, 0x00); 618 } 619 620 static void mtk_hdmi_hw_aud_set_mclk(struct mtk_hdmi *hdmi, 621 enum hdmi_aud_mclk mclk) 622 { 623 u32 val; 624 625 val = mtk_hdmi_read(hdmi, GRL_CFG5); 626 val &= CFG5_CD_RATIO_MASK; 627 628 switch (mclk) { 629 case HDMI_AUD_MCLK_128FS: 630 val |= CFG5_FS128; 631 break; 632 case HDMI_AUD_MCLK_256FS: 633 val |= CFG5_FS256; 634 break; 635 case HDMI_AUD_MCLK_384FS: 636 val |= CFG5_FS384; 637 break; 638 case HDMI_AUD_MCLK_512FS: 639 val |= CFG5_FS512; 640 break; 641 case HDMI_AUD_MCLK_768FS: 642 val |= CFG5_FS768; 643 break; 644 default: 645 val |= CFG5_FS256; 646 break; 647 } 648 mtk_hdmi_write(hdmi, GRL_CFG5, val); 649 } 650 651 struct hdmi_acr_n { 652 unsigned int clock; 653 unsigned int n[3]; 654 }; 655 656 /* Recommended N values from HDMI specification, tables 7-1 to 7-3 */ 657 static const struct hdmi_acr_n hdmi_rec_n_table[] = { 658 /* Clock, N: 32kHz 44.1kHz 48kHz */ 659 { 25175, { 4576, 7007, 6864 } }, 660 { 74176, { 11648, 17836, 11648 } }, 661 { 148352, { 11648, 8918, 5824 } }, 662 { 296703, { 5824, 4459, 5824 } }, 663 { 297000, { 3072, 4704, 5120 } }, 664 { 0, { 4096, 6272, 6144 } }, /* all other TMDS clocks */ 665 }; 666 667 /** 668 * hdmi_recommended_n() - Return N value recommended by HDMI specification 669 * @freq: audio sample rate in Hz 670 * @clock: rounded TMDS clock in kHz 671 */ 672 static unsigned int hdmi_recommended_n(unsigned int freq, unsigned int clock) 673 { 674 const struct hdmi_acr_n *recommended; 675 unsigned int i; 676 677 for (i = 0; i < ARRAY_SIZE(hdmi_rec_n_table) - 1; i++) { 678 if (clock == hdmi_rec_n_table[i].clock) 679 break; 680 } 681 recommended = hdmi_rec_n_table + i; 682 683 switch (freq) { 684 case 32000: 685 return recommended->n[0]; 686 case 44100: 687 return recommended->n[1]; 688 case 48000: 689 return recommended->n[2]; 690 case 88200: 691 return recommended->n[1] * 2; 692 case 96000: 693 return recommended->n[2] * 2; 694 case 176400: 695 return recommended->n[1] * 4; 696 case 192000: 697 return recommended->n[2] * 4; 698 default: 699 return (128 * freq) / 1000; 700 } 701 } 702 703 static unsigned int hdmi_mode_clock_to_hz(unsigned int clock) 704 { 705 switch (clock) { 706 case 25175: 707 return 25174825; /* 25.2/1.001 MHz */ 708 case 74176: 709 return 74175824; /* 74.25/1.001 MHz */ 710 case 148352: 711 return 148351648; /* 148.5/1.001 MHz */ 712 case 296703: 713 return 296703297; /* 297/1.001 MHz */ 714 default: 715 return clock * 1000; 716 } 717 } 718 719 static unsigned int hdmi_expected_cts(unsigned int audio_sample_rate, 720 unsigned int tmds_clock, unsigned int n) 721 { 722 return DIV_ROUND_CLOSEST_ULL((u64)hdmi_mode_clock_to_hz(tmds_clock) * n, 723 128 * audio_sample_rate); 724 } 725 726 static void do_hdmi_hw_aud_set_ncts(struct mtk_hdmi *hdmi, unsigned int n, 727 unsigned int cts) 728 { 729 unsigned char val[NCTS_BYTES]; 730 int i; 731 732 mtk_hdmi_write(hdmi, GRL_NCTS, 0); 733 mtk_hdmi_write(hdmi, GRL_NCTS, 0); 734 mtk_hdmi_write(hdmi, GRL_NCTS, 0); 735 memset(val, 0, sizeof(val)); 736 737 val[0] = (cts >> 24) & 0xff; 738 val[1] = (cts >> 16) & 0xff; 739 val[2] = (cts >> 8) & 0xff; 740 val[3] = cts & 0xff; 741 742 val[4] = (n >> 16) & 0xff; 743 val[5] = (n >> 8) & 0xff; 744 val[6] = n & 0xff; 745 746 for (i = 0; i < NCTS_BYTES; i++) 747 mtk_hdmi_write(hdmi, GRL_NCTS, val[i]); 748 } 749 750 static void mtk_hdmi_hw_aud_set_ncts(struct mtk_hdmi *hdmi, 751 unsigned int sample_rate, 752 unsigned int clock) 753 { 754 unsigned int n, cts; 755 756 n = hdmi_recommended_n(sample_rate, clock); 757 cts = hdmi_expected_cts(sample_rate, clock, n); 758 759 dev_dbg(hdmi->dev, "%s: sample_rate=%u, clock=%d, cts=%u, n=%u\n", 760 __func__, sample_rate, clock, n, cts); 761 762 mtk_hdmi_mask(hdmi, DUMMY_304, AUDIO_I2S_NCTS_SEL_64, 763 AUDIO_I2S_NCTS_SEL); 764 do_hdmi_hw_aud_set_ncts(hdmi, n, cts); 765 } 766 767 static u8 mtk_hdmi_aud_get_chnl_count(enum hdmi_aud_channel_type channel_type) 768 { 769 switch (channel_type) { 770 case HDMI_AUD_CHAN_TYPE_1_0: 771 case HDMI_AUD_CHAN_TYPE_1_1: 772 case HDMI_AUD_CHAN_TYPE_2_0: 773 return 2; 774 case HDMI_AUD_CHAN_TYPE_2_1: 775 case HDMI_AUD_CHAN_TYPE_3_0: 776 return 3; 777 case HDMI_AUD_CHAN_TYPE_3_1: 778 case HDMI_AUD_CHAN_TYPE_4_0: 779 case HDMI_AUD_CHAN_TYPE_3_0_LRS: 780 return 4; 781 case HDMI_AUD_CHAN_TYPE_4_1: 782 case HDMI_AUD_CHAN_TYPE_5_0: 783 case HDMI_AUD_CHAN_TYPE_3_1_LRS: 784 case HDMI_AUD_CHAN_TYPE_4_0_CLRS: 785 return 5; 786 case HDMI_AUD_CHAN_TYPE_5_1: 787 case HDMI_AUD_CHAN_TYPE_6_0: 788 case HDMI_AUD_CHAN_TYPE_4_1_CLRS: 789 case HDMI_AUD_CHAN_TYPE_6_0_CS: 790 case HDMI_AUD_CHAN_TYPE_6_0_CH: 791 case HDMI_AUD_CHAN_TYPE_6_0_OH: 792 case HDMI_AUD_CHAN_TYPE_6_0_CHR: 793 return 6; 794 case HDMI_AUD_CHAN_TYPE_6_1: 795 case HDMI_AUD_CHAN_TYPE_6_1_CS: 796 case HDMI_AUD_CHAN_TYPE_6_1_CH: 797 case HDMI_AUD_CHAN_TYPE_6_1_OH: 798 case HDMI_AUD_CHAN_TYPE_6_1_CHR: 799 case HDMI_AUD_CHAN_TYPE_7_0: 800 case HDMI_AUD_CHAN_TYPE_7_0_LH_RH: 801 case HDMI_AUD_CHAN_TYPE_7_0_LSR_RSR: 802 case HDMI_AUD_CHAN_TYPE_7_0_LC_RC: 803 case HDMI_AUD_CHAN_TYPE_7_0_LW_RW: 804 case HDMI_AUD_CHAN_TYPE_7_0_LSD_RSD: 805 case HDMI_AUD_CHAN_TYPE_7_0_LSS_RSS: 806 case HDMI_AUD_CHAN_TYPE_7_0_LHS_RHS: 807 case HDMI_AUD_CHAN_TYPE_7_0_CS_CH: 808 case HDMI_AUD_CHAN_TYPE_7_0_CS_OH: 809 case HDMI_AUD_CHAN_TYPE_7_0_CS_CHR: 810 case HDMI_AUD_CHAN_TYPE_7_0_CH_OH: 811 case HDMI_AUD_CHAN_TYPE_7_0_CH_CHR: 812 case HDMI_AUD_CHAN_TYPE_7_0_OH_CHR: 813 case HDMI_AUD_CHAN_TYPE_7_0_LSS_RSS_LSR_RSR: 814 case HDMI_AUD_CHAN_TYPE_8_0_LH_RH_CS: 815 return 7; 816 case HDMI_AUD_CHAN_TYPE_7_1: 817 case HDMI_AUD_CHAN_TYPE_7_1_LH_RH: 818 case HDMI_AUD_CHAN_TYPE_7_1_LSR_RSR: 819 case HDMI_AUD_CHAN_TYPE_7_1_LC_RC: 820 case HDMI_AUD_CHAN_TYPE_7_1_LW_RW: 821 case HDMI_AUD_CHAN_TYPE_7_1_LSD_RSD: 822 case HDMI_AUD_CHAN_TYPE_7_1_LSS_RSS: 823 case HDMI_AUD_CHAN_TYPE_7_1_LHS_RHS: 824 case HDMI_AUD_CHAN_TYPE_7_1_CS_CH: 825 case HDMI_AUD_CHAN_TYPE_7_1_CS_OH: 826 case HDMI_AUD_CHAN_TYPE_7_1_CS_CHR: 827 case HDMI_AUD_CHAN_TYPE_7_1_CH_OH: 828 case HDMI_AUD_CHAN_TYPE_7_1_CH_CHR: 829 case HDMI_AUD_CHAN_TYPE_7_1_OH_CHR: 830 case HDMI_AUD_CHAN_TYPE_7_1_LSS_RSS_LSR_RSR: 831 return 8; 832 default: 833 return 2; 834 } 835 } 836 837 static int mtk_hdmi_video_change_vpll(struct mtk_hdmi *hdmi, u32 clock) 838 { 839 unsigned long rate; 840 int ret; 841 842 /* The DPI driver already should have set TVDPLL to the correct rate */ 843 ret = clk_set_rate(hdmi->clk[MTK_HDMI_CLK_HDMI_PLL], clock); 844 if (ret) { 845 dev_err(hdmi->dev, "Failed to set PLL to %u Hz: %d\n", clock, 846 ret); 847 return ret; 848 } 849 850 rate = clk_get_rate(hdmi->clk[MTK_HDMI_CLK_HDMI_PLL]); 851 852 if (DIV_ROUND_CLOSEST(rate, 1000) != DIV_ROUND_CLOSEST(clock, 1000)) 853 dev_warn(hdmi->dev, "Want PLL %u Hz, got %lu Hz\n", clock, 854 rate); 855 else 856 dev_dbg(hdmi->dev, "Want PLL %u Hz, got %lu Hz\n", clock, rate); 857 858 mtk_hdmi_hw_config_sys(hdmi); 859 mtk_hdmi_hw_set_deep_color_mode(hdmi); 860 return 0; 861 } 862 863 static void mtk_hdmi_video_set_display_mode(struct mtk_hdmi *hdmi, 864 struct drm_display_mode *mode) 865 { 866 mtk_hdmi_hw_reset(hdmi); 867 mtk_hdmi_hw_enable_notice(hdmi, true); 868 mtk_hdmi_hw_write_int_mask(hdmi, 0xff); 869 mtk_hdmi_hw_enable_dvi_mode(hdmi, hdmi->dvi_mode); 870 mtk_hdmi_hw_ncts_auto_write_enable(hdmi, true); 871 872 mtk_hdmi_hw_msic_setting(hdmi, mode); 873 } 874 875 876 static void mtk_hdmi_aud_set_input(struct mtk_hdmi *hdmi) 877 { 878 enum hdmi_aud_channel_type chan_type; 879 u8 chan_count; 880 bool dst; 881 882 mtk_hdmi_hw_aud_set_channel_swap(hdmi, HDMI_AUD_SWAP_LFE_CC); 883 mtk_hdmi_set_bits(hdmi, GRL_MIX_CTRL, MIX_CTRL_FLAT); 884 885 if (hdmi->aud_param.aud_input_type == HDMI_AUD_INPUT_SPDIF && 886 hdmi->aud_param.aud_codec == HDMI_AUDIO_CODING_TYPE_DST) { 887 mtk_hdmi_hw_aud_set_bit_num(hdmi, HDMI_AUDIO_SAMPLE_SIZE_24); 888 } else if (hdmi->aud_param.aud_i2s_fmt == HDMI_I2S_MODE_LJT_24BIT) { 889 hdmi->aud_param.aud_i2s_fmt = HDMI_I2S_MODE_LJT_16BIT; 890 } 891 892 mtk_hdmi_hw_aud_set_i2s_fmt(hdmi, hdmi->aud_param.aud_i2s_fmt); 893 mtk_hdmi_hw_aud_set_bit_num(hdmi, HDMI_AUDIO_SAMPLE_SIZE_24); 894 895 dst = ((hdmi->aud_param.aud_input_type == HDMI_AUD_INPUT_SPDIF) && 896 (hdmi->aud_param.aud_codec == HDMI_AUDIO_CODING_TYPE_DST)); 897 mtk_hdmi_hw_audio_config(hdmi, dst); 898 899 if (hdmi->aud_param.aud_input_type == HDMI_AUD_INPUT_SPDIF) 900 chan_type = HDMI_AUD_CHAN_TYPE_2_0; 901 else 902 chan_type = hdmi->aud_param.aud_input_chan_type; 903 chan_count = mtk_hdmi_aud_get_chnl_count(chan_type); 904 mtk_hdmi_hw_aud_set_i2s_chan_num(hdmi, chan_type, chan_count); 905 mtk_hdmi_hw_aud_set_input_type(hdmi, hdmi->aud_param.aud_input_type); 906 } 907 908 static int mtk_hdmi_aud_set_src(struct mtk_hdmi *hdmi, 909 struct drm_display_mode *display_mode) 910 { 911 unsigned int sample_rate = hdmi->aud_param.codec_params.sample_rate; 912 913 mtk_hdmi_hw_ncts_enable(hdmi, false); 914 mtk_hdmi_hw_aud_src_disable(hdmi); 915 mtk_hdmi_clear_bits(hdmi, GRL_CFG2, CFG2_ACLK_INV); 916 917 if (hdmi->aud_param.aud_input_type == HDMI_AUD_INPUT_I2S) { 918 switch (sample_rate) { 919 case 32000: 920 case 44100: 921 case 48000: 922 case 88200: 923 case 96000: 924 break; 925 default: 926 return -EINVAL; 927 } 928 mtk_hdmi_hw_aud_set_mclk(hdmi, hdmi->aud_param.aud_mclk); 929 } else { 930 switch (sample_rate) { 931 case 32000: 932 case 44100: 933 case 48000: 934 break; 935 default: 936 return -EINVAL; 937 } 938 mtk_hdmi_hw_aud_set_mclk(hdmi, HDMI_AUD_MCLK_128FS); 939 } 940 941 mtk_hdmi_hw_aud_set_ncts(hdmi, sample_rate, display_mode->clock); 942 943 mtk_hdmi_hw_aud_src_reenable(hdmi); 944 return 0; 945 } 946 947 static int mtk_hdmi_aud_output_config(struct mtk_hdmi *hdmi, 948 struct drm_display_mode *display_mode) 949 { 950 mtk_hdmi_hw_aud_mute(hdmi); 951 mtk_hdmi_hw_send_aud_packet(hdmi, false); 952 953 mtk_hdmi_aud_set_input(hdmi); 954 mtk_hdmi_aud_set_src(hdmi, display_mode); 955 mtk_hdmi_hw_aud_set_channel_status(hdmi, 956 hdmi->aud_param.codec_params.iec.status); 957 958 usleep_range(50, 100); 959 960 mtk_hdmi_hw_ncts_enable(hdmi, true); 961 mtk_hdmi_hw_send_aud_packet(hdmi, true); 962 mtk_hdmi_hw_aud_unmute(hdmi); 963 return 0; 964 } 965 966 static int mtk_hdmi_setup_avi_infoframe(struct mtk_hdmi *hdmi, 967 struct drm_display_mode *mode) 968 { 969 struct hdmi_avi_infoframe frame; 970 u8 buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AVI_INFOFRAME_SIZE]; 971 ssize_t err; 972 973 err = drm_hdmi_avi_infoframe_from_display_mode(&frame, 974 hdmi->curr_conn, mode); 975 if (err < 0) { 976 dev_err(hdmi->dev, 977 "Failed to get AVI infoframe from mode: %zd\n", err); 978 return err; 979 } 980 981 err = hdmi_avi_infoframe_pack(&frame, buffer, sizeof(buffer)); 982 if (err < 0) { 983 dev_err(hdmi->dev, "Failed to pack AVI infoframe: %zd\n", err); 984 return err; 985 } 986 987 mtk_hdmi_hw_send_info_frame(hdmi, buffer, sizeof(buffer)); 988 return 0; 989 } 990 991 static int mtk_hdmi_setup_spd_infoframe(struct mtk_hdmi *hdmi, 992 const char *vendor, 993 const char *product) 994 { 995 struct hdmi_spd_infoframe frame; 996 u8 buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_SPD_INFOFRAME_SIZE]; 997 ssize_t err; 998 999 err = hdmi_spd_infoframe_init(&frame, vendor, product); 1000 if (err < 0) { 1001 dev_err(hdmi->dev, "Failed to initialize SPD infoframe: %zd\n", 1002 err); 1003 return err; 1004 } 1005 1006 err = hdmi_spd_infoframe_pack(&frame, buffer, sizeof(buffer)); 1007 if (err < 0) { 1008 dev_err(hdmi->dev, "Failed to pack SDP infoframe: %zd\n", err); 1009 return err; 1010 } 1011 1012 mtk_hdmi_hw_send_info_frame(hdmi, buffer, sizeof(buffer)); 1013 return 0; 1014 } 1015 1016 static int mtk_hdmi_setup_audio_infoframe(struct mtk_hdmi *hdmi) 1017 { 1018 struct hdmi_audio_infoframe frame; 1019 u8 buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AUDIO_INFOFRAME_SIZE]; 1020 ssize_t err; 1021 1022 err = hdmi_audio_infoframe_init(&frame); 1023 if (err < 0) { 1024 dev_err(hdmi->dev, "Failed to setup audio infoframe: %zd\n", 1025 err); 1026 return err; 1027 } 1028 1029 frame.coding_type = HDMI_AUDIO_CODING_TYPE_STREAM; 1030 frame.sample_frequency = HDMI_AUDIO_SAMPLE_FREQUENCY_STREAM; 1031 frame.sample_size = HDMI_AUDIO_SAMPLE_SIZE_STREAM; 1032 frame.channels = mtk_hdmi_aud_get_chnl_count( 1033 hdmi->aud_param.aud_input_chan_type); 1034 1035 err = hdmi_audio_infoframe_pack(&frame, buffer, sizeof(buffer)); 1036 if (err < 0) { 1037 dev_err(hdmi->dev, "Failed to pack audio infoframe: %zd\n", 1038 err); 1039 return err; 1040 } 1041 1042 mtk_hdmi_hw_send_info_frame(hdmi, buffer, sizeof(buffer)); 1043 return 0; 1044 } 1045 1046 static int mtk_hdmi_setup_vendor_specific_infoframe(struct mtk_hdmi *hdmi, 1047 struct drm_display_mode *mode) 1048 { 1049 struct hdmi_vendor_infoframe frame; 1050 u8 buffer[10]; 1051 ssize_t err; 1052 1053 err = drm_hdmi_vendor_infoframe_from_display_mode(&frame, 1054 hdmi->curr_conn, mode); 1055 if (err) { 1056 dev_err(hdmi->dev, 1057 "Failed to get vendor infoframe from mode: %zd\n", err); 1058 return err; 1059 } 1060 1061 err = hdmi_vendor_infoframe_pack(&frame, buffer, sizeof(buffer)); 1062 if (err < 0) { 1063 dev_err(hdmi->dev, "Failed to pack vendor infoframe: %zd\n", 1064 err); 1065 return err; 1066 } 1067 1068 mtk_hdmi_hw_send_info_frame(hdmi, buffer, sizeof(buffer)); 1069 return 0; 1070 } 1071 1072 static int mtk_hdmi_output_init(struct mtk_hdmi *hdmi) 1073 { 1074 struct hdmi_audio_param *aud_param = &hdmi->aud_param; 1075 1076 hdmi->csp = HDMI_COLORSPACE_RGB; 1077 aud_param->aud_codec = HDMI_AUDIO_CODING_TYPE_PCM; 1078 aud_param->aud_sampe_size = HDMI_AUDIO_SAMPLE_SIZE_16; 1079 aud_param->aud_input_type = HDMI_AUD_INPUT_I2S; 1080 aud_param->aud_i2s_fmt = HDMI_I2S_MODE_I2S_24BIT; 1081 aud_param->aud_mclk = HDMI_AUD_MCLK_128FS; 1082 aud_param->aud_input_chan_type = HDMI_AUD_CHAN_TYPE_2_0; 1083 1084 return 0; 1085 } 1086 1087 static void mtk_hdmi_audio_enable(struct mtk_hdmi *hdmi) 1088 { 1089 mtk_hdmi_hw_send_aud_packet(hdmi, true); 1090 hdmi->audio_enable = true; 1091 } 1092 1093 static void mtk_hdmi_audio_disable(struct mtk_hdmi *hdmi) 1094 { 1095 mtk_hdmi_hw_send_aud_packet(hdmi, false); 1096 hdmi->audio_enable = false; 1097 } 1098 1099 static int mtk_hdmi_audio_set_param(struct mtk_hdmi *hdmi, 1100 struct hdmi_audio_param *param) 1101 { 1102 if (!hdmi->audio_enable) { 1103 dev_err(hdmi->dev, "hdmi audio is in disable state!\n"); 1104 return -EINVAL; 1105 } 1106 dev_dbg(hdmi->dev, "codec:%d, input:%d, channel:%d, fs:%d\n", 1107 param->aud_codec, param->aud_input_type, 1108 param->aud_input_chan_type, param->codec_params.sample_rate); 1109 memcpy(&hdmi->aud_param, param, sizeof(*param)); 1110 return mtk_hdmi_aud_output_config(hdmi, &hdmi->mode); 1111 } 1112 1113 static int mtk_hdmi_output_set_display_mode(struct mtk_hdmi *hdmi, 1114 struct drm_display_mode *mode) 1115 { 1116 int ret; 1117 1118 mtk_hdmi_hw_vid_black(hdmi, true); 1119 mtk_hdmi_hw_aud_mute(hdmi); 1120 mtk_hdmi_hw_send_av_mute(hdmi); 1121 phy_power_off(hdmi->phy); 1122 1123 ret = mtk_hdmi_video_change_vpll(hdmi, 1124 mode->clock * 1000); 1125 if (ret) { 1126 dev_err(hdmi->dev, "Failed to set vpll: %d\n", ret); 1127 return ret; 1128 } 1129 mtk_hdmi_video_set_display_mode(hdmi, mode); 1130 1131 phy_power_on(hdmi->phy); 1132 mtk_hdmi_aud_output_config(hdmi, mode); 1133 1134 mtk_hdmi_hw_vid_black(hdmi, false); 1135 mtk_hdmi_hw_aud_unmute(hdmi); 1136 mtk_hdmi_hw_send_av_unmute(hdmi); 1137 1138 return 0; 1139 } 1140 1141 static const char * const mtk_hdmi_clk_names[MTK_HDMI_CLK_COUNT] = { 1142 [MTK_HDMI_CLK_HDMI_PIXEL] = "pixel", 1143 [MTK_HDMI_CLK_HDMI_PLL] = "pll", 1144 [MTK_HDMI_CLK_AUD_BCLK] = "bclk", 1145 [MTK_HDMI_CLK_AUD_SPDIF] = "spdif", 1146 }; 1147 1148 static int mtk_hdmi_get_all_clk(struct mtk_hdmi *hdmi, 1149 struct device_node *np) 1150 { 1151 int i; 1152 1153 for (i = 0; i < ARRAY_SIZE(mtk_hdmi_clk_names); i++) { 1154 hdmi->clk[i] = of_clk_get_by_name(np, 1155 mtk_hdmi_clk_names[i]); 1156 if (IS_ERR(hdmi->clk[i])) 1157 return PTR_ERR(hdmi->clk[i]); 1158 } 1159 return 0; 1160 } 1161 1162 static int mtk_hdmi_clk_enable_audio(struct mtk_hdmi *hdmi) 1163 { 1164 int ret; 1165 1166 ret = clk_prepare_enable(hdmi->clk[MTK_HDMI_CLK_AUD_BCLK]); 1167 if (ret) 1168 return ret; 1169 1170 ret = clk_prepare_enable(hdmi->clk[MTK_HDMI_CLK_AUD_SPDIF]); 1171 if (ret) 1172 goto err; 1173 1174 return 0; 1175 err: 1176 clk_disable_unprepare(hdmi->clk[MTK_HDMI_CLK_AUD_BCLK]); 1177 return ret; 1178 } 1179 1180 static void mtk_hdmi_clk_disable_audio(struct mtk_hdmi *hdmi) 1181 { 1182 clk_disable_unprepare(hdmi->clk[MTK_HDMI_CLK_AUD_BCLK]); 1183 clk_disable_unprepare(hdmi->clk[MTK_HDMI_CLK_AUD_SPDIF]); 1184 } 1185 1186 static enum drm_connector_status 1187 mtk_hdmi_update_plugged_status(struct mtk_hdmi *hdmi) 1188 { 1189 bool connected; 1190 1191 mutex_lock(&hdmi->update_plugged_status_lock); 1192 connected = mtk_cec_hpd_high(hdmi->cec_dev); 1193 if (hdmi->plugged_cb && hdmi->codec_dev) 1194 hdmi->plugged_cb(hdmi->codec_dev, connected); 1195 mutex_unlock(&hdmi->update_plugged_status_lock); 1196 1197 return connected ? 1198 connector_status_connected : connector_status_disconnected; 1199 } 1200 1201 static enum drm_connector_status mtk_hdmi_detect(struct mtk_hdmi *hdmi) 1202 { 1203 return mtk_hdmi_update_plugged_status(hdmi); 1204 } 1205 1206 static int mtk_hdmi_bridge_mode_valid(struct drm_bridge *bridge, 1207 const struct drm_display_info *info, 1208 const struct drm_display_mode *mode) 1209 { 1210 struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge); 1211 struct drm_bridge *next_bridge; 1212 1213 dev_dbg(hdmi->dev, "xres=%d, yres=%d, refresh=%d, intl=%d clock=%d\n", 1214 mode->hdisplay, mode->vdisplay, drm_mode_vrefresh(mode), 1215 !!(mode->flags & DRM_MODE_FLAG_INTERLACE), mode->clock * 1000); 1216 1217 next_bridge = drm_bridge_get_next_bridge(&hdmi->bridge); 1218 if (next_bridge) { 1219 struct drm_display_mode adjusted_mode; 1220 1221 drm_mode_copy(&adjusted_mode, mode); 1222 if (!drm_bridge_chain_mode_fixup(next_bridge, mode, 1223 &adjusted_mode)) 1224 return MODE_BAD; 1225 } 1226 1227 if (hdmi->conf->cea_modes_only && !drm_match_cea_mode(mode)) 1228 return MODE_BAD; 1229 1230 if (hdmi->conf->max_mode_clock && 1231 mode->clock > hdmi->conf->max_mode_clock) 1232 return MODE_CLOCK_HIGH; 1233 1234 if (mode->clock < 27000) 1235 return MODE_CLOCK_LOW; 1236 if (mode->clock > 297000) 1237 return MODE_CLOCK_HIGH; 1238 1239 return drm_mode_validate_size(mode, 0x1fff, 0x1fff); 1240 } 1241 1242 static void mtk_hdmi_hpd_event(bool hpd, struct device *dev) 1243 { 1244 struct mtk_hdmi *hdmi = dev_get_drvdata(dev); 1245 1246 if (hdmi && hdmi->bridge.encoder && hdmi->bridge.encoder->dev) { 1247 static enum drm_connector_status status; 1248 1249 status = mtk_hdmi_detect(hdmi); 1250 drm_helper_hpd_irq_event(hdmi->bridge.encoder->dev); 1251 drm_bridge_hpd_notify(&hdmi->bridge, status); 1252 } 1253 } 1254 1255 /* 1256 * Bridge callbacks 1257 */ 1258 1259 static enum drm_connector_status mtk_hdmi_bridge_detect(struct drm_bridge *bridge) 1260 { 1261 struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge); 1262 1263 return mtk_hdmi_detect(hdmi); 1264 } 1265 1266 static struct edid *mtk_hdmi_bridge_get_edid(struct drm_bridge *bridge, 1267 struct drm_connector *connector) 1268 { 1269 struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge); 1270 struct edid *edid; 1271 1272 if (!hdmi->ddc_adpt) 1273 return NULL; 1274 edid = drm_get_edid(connector, hdmi->ddc_adpt); 1275 if (!edid) 1276 return NULL; 1277 hdmi->dvi_mode = !drm_detect_monitor_audio(edid); 1278 return edid; 1279 } 1280 1281 static int mtk_hdmi_bridge_attach(struct drm_bridge *bridge, 1282 enum drm_bridge_attach_flags flags) 1283 { 1284 struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge); 1285 int ret; 1286 1287 if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) { 1288 DRM_ERROR("%s: The flag DRM_BRIDGE_ATTACH_NO_CONNECTOR must be supplied\n", 1289 __func__); 1290 return -EINVAL; 1291 } 1292 1293 if (hdmi->next_bridge) { 1294 ret = drm_bridge_attach(bridge->encoder, hdmi->next_bridge, 1295 bridge, flags); 1296 if (ret) { 1297 dev_err(hdmi->dev, 1298 "Failed to attach external bridge: %d\n", ret); 1299 return ret; 1300 } 1301 } 1302 1303 mtk_cec_set_hpd_event(hdmi->cec_dev, mtk_hdmi_hpd_event, hdmi->dev); 1304 1305 return 0; 1306 } 1307 1308 static bool mtk_hdmi_bridge_mode_fixup(struct drm_bridge *bridge, 1309 const struct drm_display_mode *mode, 1310 struct drm_display_mode *adjusted_mode) 1311 { 1312 return true; 1313 } 1314 1315 static void mtk_hdmi_bridge_atomic_disable(struct drm_bridge *bridge, 1316 struct drm_bridge_state *old_bridge_state) 1317 { 1318 struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge); 1319 1320 if (!hdmi->enabled) 1321 return; 1322 1323 phy_power_off(hdmi->phy); 1324 clk_disable_unprepare(hdmi->clk[MTK_HDMI_CLK_HDMI_PIXEL]); 1325 clk_disable_unprepare(hdmi->clk[MTK_HDMI_CLK_HDMI_PLL]); 1326 1327 hdmi->curr_conn = NULL; 1328 1329 hdmi->enabled = false; 1330 } 1331 1332 static void mtk_hdmi_bridge_atomic_post_disable(struct drm_bridge *bridge, 1333 struct drm_bridge_state *old_state) 1334 { 1335 struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge); 1336 1337 if (!hdmi->powered) 1338 return; 1339 1340 mtk_hdmi_hw_1p4_version_enable(hdmi, true); 1341 mtk_hdmi_hw_make_reg_writable(hdmi, false); 1342 1343 hdmi->powered = false; 1344 } 1345 1346 static void mtk_hdmi_bridge_mode_set(struct drm_bridge *bridge, 1347 const struct drm_display_mode *mode, 1348 const struct drm_display_mode *adjusted_mode) 1349 { 1350 struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge); 1351 1352 dev_dbg(hdmi->dev, "cur info: name:%s, hdisplay:%d\n", 1353 adjusted_mode->name, adjusted_mode->hdisplay); 1354 dev_dbg(hdmi->dev, "hsync_start:%d,hsync_end:%d, htotal:%d", 1355 adjusted_mode->hsync_start, adjusted_mode->hsync_end, 1356 adjusted_mode->htotal); 1357 dev_dbg(hdmi->dev, "hskew:%d, vdisplay:%d\n", 1358 adjusted_mode->hskew, adjusted_mode->vdisplay); 1359 dev_dbg(hdmi->dev, "vsync_start:%d, vsync_end:%d, vtotal:%d", 1360 adjusted_mode->vsync_start, adjusted_mode->vsync_end, 1361 adjusted_mode->vtotal); 1362 dev_dbg(hdmi->dev, "vscan:%d, flag:%d\n", 1363 adjusted_mode->vscan, adjusted_mode->flags); 1364 1365 drm_mode_copy(&hdmi->mode, adjusted_mode); 1366 } 1367 1368 static void mtk_hdmi_bridge_atomic_pre_enable(struct drm_bridge *bridge, 1369 struct drm_bridge_state *old_state) 1370 { 1371 struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge); 1372 1373 mtk_hdmi_hw_make_reg_writable(hdmi, true); 1374 mtk_hdmi_hw_1p4_version_enable(hdmi, true); 1375 1376 hdmi->powered = true; 1377 } 1378 1379 static void mtk_hdmi_send_infoframe(struct mtk_hdmi *hdmi, 1380 struct drm_display_mode *mode) 1381 { 1382 mtk_hdmi_setup_audio_infoframe(hdmi); 1383 mtk_hdmi_setup_avi_infoframe(hdmi, mode); 1384 mtk_hdmi_setup_spd_infoframe(hdmi, "mediatek", "On-chip HDMI"); 1385 if (mode->flags & DRM_MODE_FLAG_3D_MASK) 1386 mtk_hdmi_setup_vendor_specific_infoframe(hdmi, mode); 1387 } 1388 1389 static void mtk_hdmi_bridge_atomic_enable(struct drm_bridge *bridge, 1390 struct drm_bridge_state *old_state) 1391 { 1392 struct drm_atomic_state *state = old_state->base.state; 1393 struct mtk_hdmi *hdmi = hdmi_ctx_from_bridge(bridge); 1394 1395 /* Retrieve the connector through the atomic state. */ 1396 hdmi->curr_conn = drm_atomic_get_new_connector_for_encoder(state, 1397 bridge->encoder); 1398 1399 mtk_hdmi_output_set_display_mode(hdmi, &hdmi->mode); 1400 clk_prepare_enable(hdmi->clk[MTK_HDMI_CLK_HDMI_PLL]); 1401 clk_prepare_enable(hdmi->clk[MTK_HDMI_CLK_HDMI_PIXEL]); 1402 phy_power_on(hdmi->phy); 1403 mtk_hdmi_send_infoframe(hdmi, &hdmi->mode); 1404 1405 hdmi->enabled = true; 1406 } 1407 1408 static const struct drm_bridge_funcs mtk_hdmi_bridge_funcs = { 1409 .mode_valid = mtk_hdmi_bridge_mode_valid, 1410 .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state, 1411 .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state, 1412 .atomic_reset = drm_atomic_helper_bridge_reset, 1413 .attach = mtk_hdmi_bridge_attach, 1414 .mode_fixup = mtk_hdmi_bridge_mode_fixup, 1415 .atomic_disable = mtk_hdmi_bridge_atomic_disable, 1416 .atomic_post_disable = mtk_hdmi_bridge_atomic_post_disable, 1417 .mode_set = mtk_hdmi_bridge_mode_set, 1418 .atomic_pre_enable = mtk_hdmi_bridge_atomic_pre_enable, 1419 .atomic_enable = mtk_hdmi_bridge_atomic_enable, 1420 .detect = mtk_hdmi_bridge_detect, 1421 .get_edid = mtk_hdmi_bridge_get_edid, 1422 }; 1423 1424 static int mtk_hdmi_dt_parse_pdata(struct mtk_hdmi *hdmi, 1425 struct platform_device *pdev) 1426 { 1427 struct device *dev = &pdev->dev; 1428 struct device_node *np = dev->of_node; 1429 struct device_node *cec_np, *remote, *i2c_np; 1430 struct platform_device *cec_pdev; 1431 struct regmap *regmap; 1432 struct resource *mem; 1433 int ret; 1434 1435 ret = mtk_hdmi_get_all_clk(hdmi, np); 1436 if (ret) { 1437 if (ret != -EPROBE_DEFER) 1438 dev_err(dev, "Failed to get clocks: %d\n", ret); 1439 1440 return ret; 1441 } 1442 1443 /* The CEC module handles HDMI hotplug detection */ 1444 cec_np = of_get_compatible_child(np->parent, "mediatek,mt8173-cec"); 1445 if (!cec_np) { 1446 dev_err(dev, "Failed to find CEC node\n"); 1447 return -EINVAL; 1448 } 1449 1450 cec_pdev = of_find_device_by_node(cec_np); 1451 if (!cec_pdev) { 1452 dev_err(hdmi->dev, "Waiting for CEC device %pOF\n", 1453 cec_np); 1454 of_node_put(cec_np); 1455 return -EPROBE_DEFER; 1456 } 1457 of_node_put(cec_np); 1458 hdmi->cec_dev = &cec_pdev->dev; 1459 1460 /* 1461 * The mediatek,syscon-hdmi property contains a phandle link to the 1462 * MMSYS_CONFIG device and the register offset of the HDMI_SYS_CFG 1463 * registers it contains. 1464 */ 1465 regmap = syscon_regmap_lookup_by_phandle(np, "mediatek,syscon-hdmi"); 1466 ret = of_property_read_u32_index(np, "mediatek,syscon-hdmi", 1, 1467 &hdmi->sys_offset); 1468 if (IS_ERR(regmap)) 1469 ret = PTR_ERR(regmap); 1470 if (ret) { 1471 dev_err(dev, 1472 "Failed to get system configuration registers: %d\n", 1473 ret); 1474 goto put_device; 1475 } 1476 hdmi->sys_regmap = regmap; 1477 1478 mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); 1479 hdmi->regs = devm_ioremap_resource(dev, mem); 1480 if (IS_ERR(hdmi->regs)) { 1481 ret = PTR_ERR(hdmi->regs); 1482 goto put_device; 1483 } 1484 1485 remote = of_graph_get_remote_node(np, 1, 0); 1486 if (!remote) { 1487 ret = -EINVAL; 1488 goto put_device; 1489 } 1490 1491 if (!of_device_is_compatible(remote, "hdmi-connector")) { 1492 hdmi->next_bridge = of_drm_find_bridge(remote); 1493 if (!hdmi->next_bridge) { 1494 dev_err(dev, "Waiting for external bridge\n"); 1495 of_node_put(remote); 1496 ret = -EPROBE_DEFER; 1497 goto put_device; 1498 } 1499 } 1500 1501 i2c_np = of_parse_phandle(remote, "ddc-i2c-bus", 0); 1502 if (!i2c_np) { 1503 dev_err(dev, "Failed to find ddc-i2c-bus node in %pOF\n", 1504 remote); 1505 of_node_put(remote); 1506 ret = -EINVAL; 1507 goto put_device; 1508 } 1509 of_node_put(remote); 1510 1511 hdmi->ddc_adpt = of_find_i2c_adapter_by_node(i2c_np); 1512 of_node_put(i2c_np); 1513 if (!hdmi->ddc_adpt) { 1514 dev_err(dev, "Failed to get ddc i2c adapter by node\n"); 1515 ret = -EINVAL; 1516 goto put_device; 1517 } 1518 1519 return 0; 1520 put_device: 1521 put_device(hdmi->cec_dev); 1522 return ret; 1523 } 1524 1525 /* 1526 * HDMI audio codec callbacks 1527 */ 1528 1529 static int mtk_hdmi_audio_hw_params(struct device *dev, void *data, 1530 struct hdmi_codec_daifmt *daifmt, 1531 struct hdmi_codec_params *params) 1532 { 1533 struct mtk_hdmi *hdmi = dev_get_drvdata(dev); 1534 struct hdmi_audio_param hdmi_params; 1535 unsigned int chan = params->cea.channels; 1536 1537 dev_dbg(hdmi->dev, "%s: %u Hz, %d bit, %d channels\n", __func__, 1538 params->sample_rate, params->sample_width, chan); 1539 1540 if (!hdmi->bridge.encoder) 1541 return -ENODEV; 1542 1543 switch (chan) { 1544 case 2: 1545 hdmi_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_2_0; 1546 break; 1547 case 4: 1548 hdmi_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_4_0; 1549 break; 1550 case 6: 1551 hdmi_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_5_1; 1552 break; 1553 case 8: 1554 hdmi_params.aud_input_chan_type = HDMI_AUD_CHAN_TYPE_7_1; 1555 break; 1556 default: 1557 dev_err(hdmi->dev, "channel[%d] not supported!\n", chan); 1558 return -EINVAL; 1559 } 1560 1561 switch (params->sample_rate) { 1562 case 32000: 1563 case 44100: 1564 case 48000: 1565 case 88200: 1566 case 96000: 1567 case 176400: 1568 case 192000: 1569 break; 1570 default: 1571 dev_err(hdmi->dev, "rate[%d] not supported!\n", 1572 params->sample_rate); 1573 return -EINVAL; 1574 } 1575 1576 switch (daifmt->fmt) { 1577 case HDMI_I2S: 1578 hdmi_params.aud_codec = HDMI_AUDIO_CODING_TYPE_PCM; 1579 hdmi_params.aud_sampe_size = HDMI_AUDIO_SAMPLE_SIZE_16; 1580 hdmi_params.aud_input_type = HDMI_AUD_INPUT_I2S; 1581 hdmi_params.aud_i2s_fmt = HDMI_I2S_MODE_I2S_24BIT; 1582 hdmi_params.aud_mclk = HDMI_AUD_MCLK_128FS; 1583 break; 1584 case HDMI_SPDIF: 1585 hdmi_params.aud_codec = HDMI_AUDIO_CODING_TYPE_PCM; 1586 hdmi_params.aud_sampe_size = HDMI_AUDIO_SAMPLE_SIZE_16; 1587 hdmi_params.aud_input_type = HDMI_AUD_INPUT_SPDIF; 1588 break; 1589 default: 1590 dev_err(hdmi->dev, "%s: Invalid DAI format %d\n", __func__, 1591 daifmt->fmt); 1592 return -EINVAL; 1593 } 1594 1595 memcpy(&hdmi_params.codec_params, params, 1596 sizeof(hdmi_params.codec_params)); 1597 1598 mtk_hdmi_audio_set_param(hdmi, &hdmi_params); 1599 1600 return 0; 1601 } 1602 1603 static int mtk_hdmi_audio_startup(struct device *dev, void *data) 1604 { 1605 struct mtk_hdmi *hdmi = dev_get_drvdata(dev); 1606 1607 mtk_hdmi_audio_enable(hdmi); 1608 1609 return 0; 1610 } 1611 1612 static void mtk_hdmi_audio_shutdown(struct device *dev, void *data) 1613 { 1614 struct mtk_hdmi *hdmi = dev_get_drvdata(dev); 1615 1616 mtk_hdmi_audio_disable(hdmi); 1617 } 1618 1619 static int 1620 mtk_hdmi_audio_mute(struct device *dev, void *data, 1621 bool enable, int direction) 1622 { 1623 struct mtk_hdmi *hdmi = dev_get_drvdata(dev); 1624 1625 if (enable) 1626 mtk_hdmi_hw_aud_mute(hdmi); 1627 else 1628 mtk_hdmi_hw_aud_unmute(hdmi); 1629 1630 return 0; 1631 } 1632 1633 static int mtk_hdmi_audio_get_eld(struct device *dev, void *data, uint8_t *buf, size_t len) 1634 { 1635 struct mtk_hdmi *hdmi = dev_get_drvdata(dev); 1636 1637 if (hdmi->enabled) 1638 memcpy(buf, hdmi->curr_conn->eld, min(sizeof(hdmi->curr_conn->eld), len)); 1639 else 1640 memset(buf, 0, len); 1641 return 0; 1642 } 1643 1644 static int mtk_hdmi_audio_hook_plugged_cb(struct device *dev, void *data, 1645 hdmi_codec_plugged_cb fn, 1646 struct device *codec_dev) 1647 { 1648 struct mtk_hdmi *hdmi = data; 1649 1650 mutex_lock(&hdmi->update_plugged_status_lock); 1651 hdmi->plugged_cb = fn; 1652 hdmi->codec_dev = codec_dev; 1653 mutex_unlock(&hdmi->update_plugged_status_lock); 1654 1655 mtk_hdmi_update_plugged_status(hdmi); 1656 1657 return 0; 1658 } 1659 1660 static const struct hdmi_codec_ops mtk_hdmi_audio_codec_ops = { 1661 .hw_params = mtk_hdmi_audio_hw_params, 1662 .audio_startup = mtk_hdmi_audio_startup, 1663 .audio_shutdown = mtk_hdmi_audio_shutdown, 1664 .mute_stream = mtk_hdmi_audio_mute, 1665 .get_eld = mtk_hdmi_audio_get_eld, 1666 .hook_plugged_cb = mtk_hdmi_audio_hook_plugged_cb, 1667 .no_capture_mute = 1, 1668 }; 1669 1670 static int mtk_hdmi_register_audio_driver(struct device *dev) 1671 { 1672 struct mtk_hdmi *hdmi = dev_get_drvdata(dev); 1673 struct hdmi_codec_pdata codec_data = { 1674 .ops = &mtk_hdmi_audio_codec_ops, 1675 .max_i2s_channels = 2, 1676 .i2s = 1, 1677 .data = hdmi, 1678 }; 1679 struct platform_device *pdev; 1680 1681 pdev = platform_device_register_data(dev, HDMI_CODEC_DRV_NAME, 1682 PLATFORM_DEVID_AUTO, &codec_data, 1683 sizeof(codec_data)); 1684 if (IS_ERR(pdev)) 1685 return PTR_ERR(pdev); 1686 1687 DRM_INFO("%s driver bound to HDMI\n", HDMI_CODEC_DRV_NAME); 1688 return 0; 1689 } 1690 1691 static int mtk_drm_hdmi_probe(struct platform_device *pdev) 1692 { 1693 struct mtk_hdmi *hdmi; 1694 struct device *dev = &pdev->dev; 1695 int ret; 1696 1697 hdmi = devm_kzalloc(dev, sizeof(*hdmi), GFP_KERNEL); 1698 if (!hdmi) 1699 return -ENOMEM; 1700 1701 hdmi->dev = dev; 1702 hdmi->conf = of_device_get_match_data(dev); 1703 1704 ret = mtk_hdmi_dt_parse_pdata(hdmi, pdev); 1705 if (ret) 1706 return ret; 1707 1708 hdmi->phy = devm_phy_get(dev, "hdmi"); 1709 if (IS_ERR(hdmi->phy)) { 1710 ret = PTR_ERR(hdmi->phy); 1711 dev_err(dev, "Failed to get HDMI PHY: %d\n", ret); 1712 return ret; 1713 } 1714 1715 mutex_init(&hdmi->update_plugged_status_lock); 1716 platform_set_drvdata(pdev, hdmi); 1717 1718 ret = mtk_hdmi_output_init(hdmi); 1719 if (ret) { 1720 dev_err(dev, "Failed to initialize hdmi output\n"); 1721 return ret; 1722 } 1723 1724 ret = mtk_hdmi_register_audio_driver(dev); 1725 if (ret) { 1726 dev_err(dev, "Failed to register audio driver: %d\n", ret); 1727 return ret; 1728 } 1729 1730 hdmi->bridge.funcs = &mtk_hdmi_bridge_funcs; 1731 hdmi->bridge.of_node = pdev->dev.of_node; 1732 hdmi->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID 1733 | DRM_BRIDGE_OP_HPD; 1734 hdmi->bridge.type = DRM_MODE_CONNECTOR_HDMIA; 1735 drm_bridge_add(&hdmi->bridge); 1736 1737 ret = mtk_hdmi_clk_enable_audio(hdmi); 1738 if (ret) { 1739 dev_err(dev, "Failed to enable audio clocks: %d\n", ret); 1740 goto err_bridge_remove; 1741 } 1742 1743 return 0; 1744 1745 err_bridge_remove: 1746 drm_bridge_remove(&hdmi->bridge); 1747 return ret; 1748 } 1749 1750 static int mtk_drm_hdmi_remove(struct platform_device *pdev) 1751 { 1752 struct mtk_hdmi *hdmi = platform_get_drvdata(pdev); 1753 1754 drm_bridge_remove(&hdmi->bridge); 1755 mtk_hdmi_clk_disable_audio(hdmi); 1756 return 0; 1757 } 1758 1759 #ifdef CONFIG_PM_SLEEP 1760 static int mtk_hdmi_suspend(struct device *dev) 1761 { 1762 struct mtk_hdmi *hdmi = dev_get_drvdata(dev); 1763 1764 mtk_hdmi_clk_disable_audio(hdmi); 1765 1766 return 0; 1767 } 1768 1769 static int mtk_hdmi_resume(struct device *dev) 1770 { 1771 struct mtk_hdmi *hdmi = dev_get_drvdata(dev); 1772 int ret = 0; 1773 1774 ret = mtk_hdmi_clk_enable_audio(hdmi); 1775 if (ret) { 1776 dev_err(dev, "hdmi resume failed!\n"); 1777 return ret; 1778 } 1779 1780 return 0; 1781 } 1782 #endif 1783 static SIMPLE_DEV_PM_OPS(mtk_hdmi_pm_ops, 1784 mtk_hdmi_suspend, mtk_hdmi_resume); 1785 1786 static const struct mtk_hdmi_conf mtk_hdmi_conf_mt2701 = { 1787 .tz_disabled = true, 1788 }; 1789 1790 static const struct mtk_hdmi_conf mtk_hdmi_conf_mt8167 = { 1791 .max_mode_clock = 148500, 1792 .cea_modes_only = true, 1793 }; 1794 1795 static const struct of_device_id mtk_drm_hdmi_of_ids[] = { 1796 { .compatible = "mediatek,mt2701-hdmi", 1797 .data = &mtk_hdmi_conf_mt2701, 1798 }, 1799 { .compatible = "mediatek,mt8167-hdmi", 1800 .data = &mtk_hdmi_conf_mt8167, 1801 }, 1802 { .compatible = "mediatek,mt8173-hdmi", 1803 }, 1804 {} 1805 }; 1806 MODULE_DEVICE_TABLE(of, mtk_drm_hdmi_of_ids); 1807 1808 static struct platform_driver mtk_hdmi_driver = { 1809 .probe = mtk_drm_hdmi_probe, 1810 .remove = mtk_drm_hdmi_remove, 1811 .driver = { 1812 .name = "mediatek-drm-hdmi", 1813 .of_match_table = mtk_drm_hdmi_of_ids, 1814 .pm = &mtk_hdmi_pm_ops, 1815 }, 1816 }; 1817 1818 static struct platform_driver * const mtk_hdmi_drivers[] = { 1819 &mtk_hdmi_ddc_driver, 1820 &mtk_cec_driver, 1821 &mtk_hdmi_driver, 1822 }; 1823 1824 static int __init mtk_hdmitx_init(void) 1825 { 1826 return platform_register_drivers(mtk_hdmi_drivers, 1827 ARRAY_SIZE(mtk_hdmi_drivers)); 1828 } 1829 1830 static void __exit mtk_hdmitx_exit(void) 1831 { 1832 platform_unregister_drivers(mtk_hdmi_drivers, 1833 ARRAY_SIZE(mtk_hdmi_drivers)); 1834 } 1835 1836 module_init(mtk_hdmitx_init); 1837 module_exit(mtk_hdmitx_exit); 1838 1839 MODULE_AUTHOR("Jie Qiu <jie.qiu@mediatek.com>"); 1840 MODULE_DESCRIPTION("MediaTek HDMI Driver"); 1841 MODULE_LICENSE("GPL v2"); 1842