1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Copyright (C) 2018 Renesas Electronics 4 * 5 * Copyright (C) 2016 Atmel 6 * Bo Shen <voice.shen@atmel.com> 7 * 8 * Authors: Bo Shen <voice.shen@atmel.com> 9 * Boris Brezillon <boris.brezillon@free-electrons.com> 10 * Wu, Songjun <Songjun.Wu@atmel.com> 11 * 12 * Copyright (C) 2010-2011 Freescale Semiconductor, Inc. All Rights Reserved. 13 */ 14 15 #include <linux/gpio/consumer.h> 16 #include <linux/i2c-mux.h> 17 #include <linux/i2c.h> 18 #include <linux/media-bus-format.h> 19 #include <linux/module.h> 20 #include <linux/regmap.h> 21 #include <linux/regulator/consumer.h> 22 #include <linux/clk.h> 23 24 #include <drm/drm_atomic_helper.h> 25 #include <drm/drm_bridge.h> 26 #include <drm/drm_drv.h> 27 #include <drm/drm_edid.h> 28 #include <drm/drm_print.h> 29 #include <drm/drm_probe_helper.h> 30 31 #include <sound/hdmi-codec.h> 32 33 #define SII902X_TPI_VIDEO_DATA 0x0 34 35 #define SII902X_TPI_PIXEL_REPETITION 0x8 36 #define SII902X_TPI_AVI_PIXEL_REP_BUS_24BIT BIT(5) 37 #define SII902X_TPI_AVI_PIXEL_REP_RISING_EDGE BIT(4) 38 #define SII902X_TPI_AVI_PIXEL_REP_4X 3 39 #define SII902X_TPI_AVI_PIXEL_REP_2X 1 40 #define SII902X_TPI_AVI_PIXEL_REP_NONE 0 41 #define SII902X_TPI_CLK_RATIO_HALF (0 << 6) 42 #define SII902X_TPI_CLK_RATIO_1X (1 << 6) 43 #define SII902X_TPI_CLK_RATIO_2X (2 << 6) 44 #define SII902X_TPI_CLK_RATIO_4X (3 << 6) 45 46 #define SII902X_TPI_AVI_IN_FORMAT 0x9 47 #define SII902X_TPI_AVI_INPUT_BITMODE_12BIT BIT(7) 48 #define SII902X_TPI_AVI_INPUT_DITHER BIT(6) 49 #define SII902X_TPI_AVI_INPUT_RANGE_LIMITED (2 << 2) 50 #define SII902X_TPI_AVI_INPUT_RANGE_FULL (1 << 2) 51 #define SII902X_TPI_AVI_INPUT_RANGE_AUTO (0 << 2) 52 #define SII902X_TPI_AVI_INPUT_COLORSPACE_BLACK (3 << 0) 53 #define SII902X_TPI_AVI_INPUT_COLORSPACE_YUV422 (2 << 0) 54 #define SII902X_TPI_AVI_INPUT_COLORSPACE_YUV444 (1 << 0) 55 #define SII902X_TPI_AVI_INPUT_COLORSPACE_RGB (0 << 0) 56 57 #define SII902X_TPI_AVI_INFOFRAME 0x0c 58 59 #define SII902X_SYS_CTRL_DATA 0x1a 60 #define SII902X_SYS_CTRL_PWR_DWN BIT(4) 61 #define SII902X_SYS_CTRL_AV_MUTE BIT(3) 62 #define SII902X_SYS_CTRL_DDC_BUS_REQ BIT(2) 63 #define SII902X_SYS_CTRL_DDC_BUS_GRTD BIT(1) 64 #define SII902X_SYS_CTRL_OUTPUT_MODE BIT(0) 65 #define SII902X_SYS_CTRL_OUTPUT_HDMI 1 66 #define SII902X_SYS_CTRL_OUTPUT_DVI 0 67 68 #define SII902X_REG_CHIPID(n) (0x1b + (n)) 69 70 #define SII902X_PWR_STATE_CTRL 0x1e 71 #define SII902X_AVI_POWER_STATE_MSK GENMASK(1, 0) 72 #define SII902X_AVI_POWER_STATE_D(l) ((l) & SII902X_AVI_POWER_STATE_MSK) 73 74 /* Audio */ 75 #define SII902X_TPI_I2S_ENABLE_MAPPING_REG 0x1f 76 #define SII902X_TPI_I2S_CONFIG_FIFO0 (0 << 0) 77 #define SII902X_TPI_I2S_CONFIG_FIFO1 (1 << 0) 78 #define SII902X_TPI_I2S_CONFIG_FIFO2 (2 << 0) 79 #define SII902X_TPI_I2S_CONFIG_FIFO3 (3 << 0) 80 #define SII902X_TPI_I2S_LEFT_RIGHT_SWAP (1 << 2) 81 #define SII902X_TPI_I2S_AUTO_DOWNSAMPLE (1 << 3) 82 #define SII902X_TPI_I2S_SELECT_SD0 (0 << 4) 83 #define SII902X_TPI_I2S_SELECT_SD1 (1 << 4) 84 #define SII902X_TPI_I2S_SELECT_SD2 (2 << 4) 85 #define SII902X_TPI_I2S_SELECT_SD3 (3 << 4) 86 #define SII902X_TPI_I2S_FIFO_ENABLE (1 << 7) 87 88 #define SII902X_TPI_I2S_INPUT_CONFIG_REG 0x20 89 #define SII902X_TPI_I2S_FIRST_BIT_SHIFT_YES (0 << 0) 90 #define SII902X_TPI_I2S_FIRST_BIT_SHIFT_NO (1 << 0) 91 #define SII902X_TPI_I2S_SD_DIRECTION_MSB_FIRST (0 << 1) 92 #define SII902X_TPI_I2S_SD_DIRECTION_LSB_FIRST (1 << 1) 93 #define SII902X_TPI_I2S_SD_JUSTIFY_LEFT (0 << 2) 94 #define SII902X_TPI_I2S_SD_JUSTIFY_RIGHT (1 << 2) 95 #define SII902X_TPI_I2S_WS_POLARITY_LOW (0 << 3) 96 #define SII902X_TPI_I2S_WS_POLARITY_HIGH (1 << 3) 97 #define SII902X_TPI_I2S_MCLK_MULTIPLIER_128 (0 << 4) 98 #define SII902X_TPI_I2S_MCLK_MULTIPLIER_256 (1 << 4) 99 #define SII902X_TPI_I2S_MCLK_MULTIPLIER_384 (2 << 4) 100 #define SII902X_TPI_I2S_MCLK_MULTIPLIER_512 (3 << 4) 101 #define SII902X_TPI_I2S_MCLK_MULTIPLIER_768 (4 << 4) 102 #define SII902X_TPI_I2S_MCLK_MULTIPLIER_1024 (5 << 4) 103 #define SII902X_TPI_I2S_MCLK_MULTIPLIER_1152 (6 << 4) 104 #define SII902X_TPI_I2S_MCLK_MULTIPLIER_192 (7 << 4) 105 #define SII902X_TPI_I2S_SCK_EDGE_FALLING (0 << 7) 106 #define SII902X_TPI_I2S_SCK_EDGE_RISING (1 << 7) 107 108 #define SII902X_TPI_I2S_STRM_HDR_BASE 0x21 109 #define SII902X_TPI_I2S_STRM_HDR_SIZE 5 110 111 #define SII902X_TPI_AUDIO_CONFIG_BYTE2_REG 0x26 112 #define SII902X_TPI_AUDIO_CODING_STREAM_HEADER (0 << 0) 113 #define SII902X_TPI_AUDIO_CODING_PCM (1 << 0) 114 #define SII902X_TPI_AUDIO_CODING_AC3 (2 << 0) 115 #define SII902X_TPI_AUDIO_CODING_MPEG1 (3 << 0) 116 #define SII902X_TPI_AUDIO_CODING_MP3 (4 << 0) 117 #define SII902X_TPI_AUDIO_CODING_MPEG2 (5 << 0) 118 #define SII902X_TPI_AUDIO_CODING_AAC (6 << 0) 119 #define SII902X_TPI_AUDIO_CODING_DTS (7 << 0) 120 #define SII902X_TPI_AUDIO_CODING_ATRAC (8 << 0) 121 #define SII902X_TPI_AUDIO_MUTE_DISABLE (0 << 4) 122 #define SII902X_TPI_AUDIO_MUTE_ENABLE (1 << 4) 123 #define SII902X_TPI_AUDIO_LAYOUT_2_CHANNELS (0 << 5) 124 #define SII902X_TPI_AUDIO_LAYOUT_8_CHANNELS (1 << 5) 125 #define SII902X_TPI_AUDIO_INTERFACE_DISABLE (0 << 6) 126 #define SII902X_TPI_AUDIO_INTERFACE_SPDIF (1 << 6) 127 #define SII902X_TPI_AUDIO_INTERFACE_I2S (2 << 6) 128 129 #define SII902X_TPI_AUDIO_CONFIG_BYTE3_REG 0x27 130 #define SII902X_TPI_AUDIO_FREQ_STREAM (0 << 3) 131 #define SII902X_TPI_AUDIO_FREQ_32KHZ (1 << 3) 132 #define SII902X_TPI_AUDIO_FREQ_44KHZ (2 << 3) 133 #define SII902X_TPI_AUDIO_FREQ_48KHZ (3 << 3) 134 #define SII902X_TPI_AUDIO_FREQ_88KHZ (4 << 3) 135 #define SII902X_TPI_AUDIO_FREQ_96KHZ (5 << 3) 136 #define SII902X_TPI_AUDIO_FREQ_176KHZ (6 << 3) 137 #define SII902X_TPI_AUDIO_FREQ_192KHZ (7 << 3) 138 #define SII902X_TPI_AUDIO_SAMPLE_SIZE_STREAM (0 << 6) 139 #define SII902X_TPI_AUDIO_SAMPLE_SIZE_16 (1 << 6) 140 #define SII902X_TPI_AUDIO_SAMPLE_SIZE_20 (2 << 6) 141 #define SII902X_TPI_AUDIO_SAMPLE_SIZE_24 (3 << 6) 142 143 #define SII902X_TPI_AUDIO_CONFIG_BYTE4_REG 0x28 144 145 #define SII902X_INT_ENABLE 0x3c 146 #define SII902X_INT_STATUS 0x3d 147 #define SII902X_HOTPLUG_EVENT BIT(0) 148 #define SII902X_PLUGGED_STATUS BIT(2) 149 150 #define SII902X_REG_TPI_RQB 0xc7 151 152 /* Indirect internal register access */ 153 #define SII902X_IND_SET_PAGE 0xbc 154 #define SII902X_IND_OFFSET 0xbd 155 #define SII902X_IND_VALUE 0xbe 156 157 #define SII902X_TPI_MISC_INFOFRAME_BASE 0xbf 158 #define SII902X_TPI_MISC_INFOFRAME_END 0xde 159 #define SII902X_TPI_MISC_INFOFRAME_SIZE \ 160 (SII902X_TPI_MISC_INFOFRAME_END - SII902X_TPI_MISC_INFOFRAME_BASE) 161 162 #define SII902X_I2C_BUS_ACQUISITION_TIMEOUT_MS 500 163 164 #define SII902X_AUDIO_PORT_INDEX 3 165 166 struct sii902x { 167 struct i2c_client *i2c; 168 struct regmap *regmap; 169 struct drm_bridge bridge; 170 struct drm_bridge *next_bridge; 171 struct drm_connector connector; 172 struct gpio_desc *reset_gpio; 173 struct i2c_mux_core *i2cmux; 174 bool sink_is_hdmi; 175 /* 176 * Mutex protects audio and video functions from interfering 177 * each other, by keeping their i2c command sequences atomic. 178 */ 179 struct mutex mutex; 180 struct sii902x_audio { 181 struct platform_device *pdev; 182 struct clk *mclk; 183 u32 i2s_fifo_sequence[4]; 184 } audio; 185 }; 186 187 static int sii902x_read_unlocked(struct i2c_client *i2c, u8 reg, u8 *val) 188 { 189 union i2c_smbus_data data; 190 int ret; 191 192 ret = __i2c_smbus_xfer(i2c->adapter, i2c->addr, i2c->flags, 193 I2C_SMBUS_READ, reg, I2C_SMBUS_BYTE_DATA, &data); 194 195 if (ret < 0) 196 return ret; 197 198 *val = data.byte; 199 return 0; 200 } 201 202 static int sii902x_write_unlocked(struct i2c_client *i2c, u8 reg, u8 val) 203 { 204 union i2c_smbus_data data; 205 206 data.byte = val; 207 208 return __i2c_smbus_xfer(i2c->adapter, i2c->addr, i2c->flags, 209 I2C_SMBUS_WRITE, reg, I2C_SMBUS_BYTE_DATA, 210 &data); 211 } 212 213 static int sii902x_update_bits_unlocked(struct i2c_client *i2c, u8 reg, u8 mask, 214 u8 val) 215 { 216 int ret; 217 u8 status; 218 219 ret = sii902x_read_unlocked(i2c, reg, &status); 220 if (ret) 221 return ret; 222 status &= ~mask; 223 status |= val & mask; 224 return sii902x_write_unlocked(i2c, reg, status); 225 } 226 227 static inline struct sii902x *bridge_to_sii902x(struct drm_bridge *bridge) 228 { 229 return container_of(bridge, struct sii902x, bridge); 230 } 231 232 static inline struct sii902x *connector_to_sii902x(struct drm_connector *con) 233 { 234 return container_of(con, struct sii902x, connector); 235 } 236 237 static void sii902x_reset(struct sii902x *sii902x) 238 { 239 if (!sii902x->reset_gpio) 240 return; 241 242 gpiod_set_value_cansleep(sii902x->reset_gpio, 1); 243 244 /* The datasheet says treset-min = 100us. Make it 150us to be sure. */ 245 usleep_range(150, 200); 246 247 gpiod_set_value_cansleep(sii902x->reset_gpio, 0); 248 } 249 250 static enum drm_connector_status sii902x_detect(struct sii902x *sii902x) 251 { 252 unsigned int status; 253 254 mutex_lock(&sii902x->mutex); 255 256 regmap_read(sii902x->regmap, SII902X_INT_STATUS, &status); 257 258 mutex_unlock(&sii902x->mutex); 259 260 return (status & SII902X_PLUGGED_STATUS) ? 261 connector_status_connected : connector_status_disconnected; 262 } 263 264 static enum drm_connector_status 265 sii902x_connector_detect(struct drm_connector *connector, bool force) 266 { 267 struct sii902x *sii902x = connector_to_sii902x(connector); 268 269 return sii902x_detect(sii902x); 270 } 271 272 static const struct drm_connector_funcs sii902x_connector_funcs = { 273 .detect = sii902x_connector_detect, 274 .fill_modes = drm_helper_probe_single_connector_modes, 275 .destroy = drm_connector_cleanup, 276 .reset = drm_atomic_helper_connector_reset, 277 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, 278 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, 279 }; 280 281 static struct edid *sii902x_get_edid(struct sii902x *sii902x, 282 struct drm_connector *connector) 283 { 284 struct edid *edid; 285 286 mutex_lock(&sii902x->mutex); 287 288 edid = drm_get_edid(connector, sii902x->i2cmux->adapter[0]); 289 if (edid) { 290 if (drm_detect_hdmi_monitor(edid)) 291 sii902x->sink_is_hdmi = true; 292 else 293 sii902x->sink_is_hdmi = false; 294 } 295 296 mutex_unlock(&sii902x->mutex); 297 298 return edid; 299 } 300 301 static int sii902x_get_modes(struct drm_connector *connector) 302 { 303 struct sii902x *sii902x = connector_to_sii902x(connector); 304 struct edid *edid; 305 int num = 0; 306 307 edid = sii902x_get_edid(sii902x, connector); 308 drm_connector_update_edid_property(connector, edid); 309 if (edid) { 310 num = drm_add_edid_modes(connector, edid); 311 kfree(edid); 312 } 313 314 return num; 315 } 316 317 static enum drm_mode_status sii902x_mode_valid(struct drm_connector *connector, 318 struct drm_display_mode *mode) 319 { 320 /* TODO: check mode */ 321 322 return MODE_OK; 323 } 324 325 static const struct drm_connector_helper_funcs sii902x_connector_helper_funcs = { 326 .get_modes = sii902x_get_modes, 327 .mode_valid = sii902x_mode_valid, 328 }; 329 330 static void sii902x_bridge_disable(struct drm_bridge *bridge) 331 { 332 struct sii902x *sii902x = bridge_to_sii902x(bridge); 333 334 mutex_lock(&sii902x->mutex); 335 336 regmap_update_bits(sii902x->regmap, SII902X_SYS_CTRL_DATA, 337 SII902X_SYS_CTRL_PWR_DWN, 338 SII902X_SYS_CTRL_PWR_DWN); 339 340 mutex_unlock(&sii902x->mutex); 341 } 342 343 static void sii902x_bridge_enable(struct drm_bridge *bridge) 344 { 345 struct sii902x *sii902x = bridge_to_sii902x(bridge); 346 347 mutex_lock(&sii902x->mutex); 348 349 regmap_update_bits(sii902x->regmap, SII902X_PWR_STATE_CTRL, 350 SII902X_AVI_POWER_STATE_MSK, 351 SII902X_AVI_POWER_STATE_D(0)); 352 regmap_update_bits(sii902x->regmap, SII902X_SYS_CTRL_DATA, 353 SII902X_SYS_CTRL_PWR_DWN, 0); 354 355 mutex_unlock(&sii902x->mutex); 356 } 357 358 static void sii902x_bridge_mode_set(struct drm_bridge *bridge, 359 const struct drm_display_mode *mode, 360 const struct drm_display_mode *adj) 361 { 362 struct sii902x *sii902x = bridge_to_sii902x(bridge); 363 u8 output_mode = SII902X_SYS_CTRL_OUTPUT_DVI; 364 struct regmap *regmap = sii902x->regmap; 365 u8 buf[HDMI_INFOFRAME_SIZE(AVI)]; 366 struct hdmi_avi_infoframe frame; 367 u16 pixel_clock_10kHz = adj->clock / 10; 368 int ret; 369 370 if (sii902x->sink_is_hdmi) 371 output_mode = SII902X_SYS_CTRL_OUTPUT_HDMI; 372 373 buf[0] = pixel_clock_10kHz & 0xff; 374 buf[1] = pixel_clock_10kHz >> 8; 375 buf[2] = drm_mode_vrefresh(adj); 376 buf[3] = 0x00; 377 buf[4] = adj->hdisplay; 378 buf[5] = adj->hdisplay >> 8; 379 buf[6] = adj->vdisplay; 380 buf[7] = adj->vdisplay >> 8; 381 buf[8] = SII902X_TPI_CLK_RATIO_1X | SII902X_TPI_AVI_PIXEL_REP_NONE | 382 SII902X_TPI_AVI_PIXEL_REP_BUS_24BIT; 383 buf[9] = SII902X_TPI_AVI_INPUT_RANGE_AUTO | 384 SII902X_TPI_AVI_INPUT_COLORSPACE_RGB; 385 386 mutex_lock(&sii902x->mutex); 387 388 ret = regmap_update_bits(sii902x->regmap, SII902X_SYS_CTRL_DATA, 389 SII902X_SYS_CTRL_OUTPUT_MODE, output_mode); 390 if (ret) 391 goto out; 392 393 ret = regmap_bulk_write(regmap, SII902X_TPI_VIDEO_DATA, buf, 10); 394 if (ret) 395 goto out; 396 397 ret = drm_hdmi_avi_infoframe_from_display_mode(&frame, 398 &sii902x->connector, adj); 399 if (ret < 0) { 400 DRM_ERROR("couldn't fill AVI infoframe\n"); 401 goto out; 402 } 403 404 ret = hdmi_avi_infoframe_pack(&frame, buf, sizeof(buf)); 405 if (ret < 0) { 406 DRM_ERROR("failed to pack AVI infoframe: %d\n", ret); 407 goto out; 408 } 409 410 /* Do not send the infoframe header, but keep the CRC field. */ 411 regmap_bulk_write(regmap, SII902X_TPI_AVI_INFOFRAME, 412 buf + HDMI_INFOFRAME_HEADER_SIZE - 1, 413 HDMI_AVI_INFOFRAME_SIZE + 1); 414 415 out: 416 mutex_unlock(&sii902x->mutex); 417 } 418 419 static int sii902x_bridge_attach(struct drm_bridge *bridge, 420 enum drm_bridge_attach_flags flags) 421 { 422 struct sii902x *sii902x = bridge_to_sii902x(bridge); 423 u32 bus_format = MEDIA_BUS_FMT_RGB888_1X24; 424 struct drm_device *drm = bridge->dev; 425 int ret; 426 427 if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR) 428 return drm_bridge_attach(bridge->encoder, sii902x->next_bridge, 429 bridge, flags); 430 431 drm_connector_helper_add(&sii902x->connector, 432 &sii902x_connector_helper_funcs); 433 434 if (!drm_core_check_feature(drm, DRIVER_ATOMIC)) { 435 dev_err(&sii902x->i2c->dev, 436 "sii902x driver is only compatible with DRM devices supporting atomic updates\n"); 437 return -ENOTSUPP; 438 } 439 440 ret = drm_connector_init(drm, &sii902x->connector, 441 &sii902x_connector_funcs, 442 DRM_MODE_CONNECTOR_HDMIA); 443 if (ret) 444 return ret; 445 446 if (sii902x->i2c->irq > 0) 447 sii902x->connector.polled = DRM_CONNECTOR_POLL_HPD; 448 else 449 sii902x->connector.polled = DRM_CONNECTOR_POLL_CONNECT; 450 451 ret = drm_display_info_set_bus_formats(&sii902x->connector.display_info, 452 &bus_format, 1); 453 if (ret) 454 return ret; 455 456 drm_connector_attach_encoder(&sii902x->connector, bridge->encoder); 457 458 return 0; 459 } 460 461 static enum drm_connector_status sii902x_bridge_detect(struct drm_bridge *bridge) 462 { 463 struct sii902x *sii902x = bridge_to_sii902x(bridge); 464 465 return sii902x_detect(sii902x); 466 } 467 468 static struct edid *sii902x_bridge_get_edid(struct drm_bridge *bridge, 469 struct drm_connector *connector) 470 { 471 struct sii902x *sii902x = bridge_to_sii902x(bridge); 472 473 return sii902x_get_edid(sii902x, connector); 474 } 475 476 static const struct drm_bridge_funcs sii902x_bridge_funcs = { 477 .attach = sii902x_bridge_attach, 478 .mode_set = sii902x_bridge_mode_set, 479 .disable = sii902x_bridge_disable, 480 .enable = sii902x_bridge_enable, 481 .detect = sii902x_bridge_detect, 482 .get_edid = sii902x_bridge_get_edid, 483 }; 484 485 static int sii902x_mute(struct sii902x *sii902x, bool mute) 486 { 487 struct device *dev = &sii902x->i2c->dev; 488 unsigned int val = mute ? SII902X_TPI_AUDIO_MUTE_ENABLE : 489 SII902X_TPI_AUDIO_MUTE_DISABLE; 490 491 dev_dbg(dev, "%s: %s\n", __func__, mute ? "Muted" : "Unmuted"); 492 493 return regmap_update_bits(sii902x->regmap, 494 SII902X_TPI_AUDIO_CONFIG_BYTE2_REG, 495 SII902X_TPI_AUDIO_MUTE_ENABLE, val); 496 } 497 498 static const int sii902x_mclk_div_table[] = { 499 128, 256, 384, 512, 768, 1024, 1152, 192 }; 500 501 static int sii902x_select_mclk_div(u8 *i2s_config_reg, unsigned int rate, 502 unsigned int mclk) 503 { 504 int div = mclk / rate; 505 int distance = 100000; 506 u8 i, nearest = 0; 507 508 for (i = 0; i < ARRAY_SIZE(sii902x_mclk_div_table); i++) { 509 unsigned int d = abs(div - sii902x_mclk_div_table[i]); 510 511 if (d >= distance) 512 continue; 513 514 nearest = i; 515 distance = d; 516 if (d == 0) 517 break; 518 } 519 520 *i2s_config_reg |= nearest << 4; 521 522 return sii902x_mclk_div_table[nearest]; 523 } 524 525 static const struct sii902x_sample_freq { 526 u32 freq; 527 u8 val; 528 } sii902x_sample_freq[] = { 529 { .freq = 32000, .val = SII902X_TPI_AUDIO_FREQ_32KHZ }, 530 { .freq = 44000, .val = SII902X_TPI_AUDIO_FREQ_44KHZ }, 531 { .freq = 48000, .val = SII902X_TPI_AUDIO_FREQ_48KHZ }, 532 { .freq = 88000, .val = SII902X_TPI_AUDIO_FREQ_88KHZ }, 533 { .freq = 96000, .val = SII902X_TPI_AUDIO_FREQ_96KHZ }, 534 { .freq = 176000, .val = SII902X_TPI_AUDIO_FREQ_176KHZ }, 535 { .freq = 192000, .val = SII902X_TPI_AUDIO_FREQ_192KHZ }, 536 }; 537 538 static int sii902x_audio_hw_params(struct device *dev, void *data, 539 struct hdmi_codec_daifmt *daifmt, 540 struct hdmi_codec_params *params) 541 { 542 struct sii902x *sii902x = dev_get_drvdata(dev); 543 u8 i2s_config_reg = SII902X_TPI_I2S_SD_DIRECTION_MSB_FIRST; 544 u8 config_byte2_reg = (SII902X_TPI_AUDIO_INTERFACE_I2S | 545 SII902X_TPI_AUDIO_MUTE_ENABLE | 546 SII902X_TPI_AUDIO_CODING_PCM); 547 u8 config_byte3_reg = 0; 548 u8 infoframe_buf[HDMI_INFOFRAME_SIZE(AUDIO)]; 549 unsigned long mclk_rate; 550 int i, ret; 551 552 if (daifmt->bit_clk_provider || daifmt->frame_clk_provider) { 553 dev_dbg(dev, "%s: I2S clock provider mode not supported\n", 554 __func__); 555 return -EINVAL; 556 } 557 558 switch (daifmt->fmt) { 559 case HDMI_I2S: 560 i2s_config_reg |= SII902X_TPI_I2S_FIRST_BIT_SHIFT_YES | 561 SII902X_TPI_I2S_SD_JUSTIFY_LEFT; 562 break; 563 case HDMI_RIGHT_J: 564 i2s_config_reg |= SII902X_TPI_I2S_SD_JUSTIFY_RIGHT; 565 break; 566 case HDMI_LEFT_J: 567 i2s_config_reg |= SII902X_TPI_I2S_SD_JUSTIFY_LEFT; 568 break; 569 default: 570 dev_dbg(dev, "%s: Unsupported i2s format %u\n", __func__, 571 daifmt->fmt); 572 return -EINVAL; 573 } 574 575 if (daifmt->bit_clk_inv) 576 i2s_config_reg |= SII902X_TPI_I2S_SCK_EDGE_FALLING; 577 else 578 i2s_config_reg |= SII902X_TPI_I2S_SCK_EDGE_RISING; 579 580 if (daifmt->frame_clk_inv) 581 i2s_config_reg |= SII902X_TPI_I2S_WS_POLARITY_LOW; 582 else 583 i2s_config_reg |= SII902X_TPI_I2S_WS_POLARITY_HIGH; 584 585 if (params->channels > 2) 586 config_byte2_reg |= SII902X_TPI_AUDIO_LAYOUT_8_CHANNELS; 587 else 588 config_byte2_reg |= SII902X_TPI_AUDIO_LAYOUT_2_CHANNELS; 589 590 switch (params->sample_width) { 591 case 16: 592 config_byte3_reg |= SII902X_TPI_AUDIO_SAMPLE_SIZE_16; 593 break; 594 case 20: 595 config_byte3_reg |= SII902X_TPI_AUDIO_SAMPLE_SIZE_20; 596 break; 597 case 24: 598 case 32: 599 config_byte3_reg |= SII902X_TPI_AUDIO_SAMPLE_SIZE_24; 600 break; 601 default: 602 dev_err(dev, "%s: Unsupported sample width %u\n", __func__, 603 params->sample_width); 604 return -EINVAL; 605 } 606 607 for (i = 0; i < ARRAY_SIZE(sii902x_sample_freq); i++) { 608 if (params->sample_rate == sii902x_sample_freq[i].freq) { 609 config_byte3_reg |= sii902x_sample_freq[i].val; 610 break; 611 } 612 } 613 614 ret = clk_prepare_enable(sii902x->audio.mclk); 615 if (ret) { 616 dev_err(dev, "Enabling mclk failed: %d\n", ret); 617 return ret; 618 } 619 620 if (sii902x->audio.mclk) { 621 mclk_rate = clk_get_rate(sii902x->audio.mclk); 622 ret = sii902x_select_mclk_div(&i2s_config_reg, 623 params->sample_rate, mclk_rate); 624 if (mclk_rate != ret * params->sample_rate) 625 dev_dbg(dev, "Inaccurate reference clock (%ld/%d != %u)\n", 626 mclk_rate, ret, params->sample_rate); 627 } 628 629 mutex_lock(&sii902x->mutex); 630 631 ret = regmap_write(sii902x->regmap, 632 SII902X_TPI_AUDIO_CONFIG_BYTE2_REG, 633 config_byte2_reg); 634 if (ret < 0) 635 goto out; 636 637 ret = regmap_write(sii902x->regmap, SII902X_TPI_I2S_INPUT_CONFIG_REG, 638 i2s_config_reg); 639 if (ret) 640 goto out; 641 642 for (i = 0; i < ARRAY_SIZE(sii902x->audio.i2s_fifo_sequence) && 643 sii902x->audio.i2s_fifo_sequence[i]; i++) 644 regmap_write(sii902x->regmap, 645 SII902X_TPI_I2S_ENABLE_MAPPING_REG, 646 sii902x->audio.i2s_fifo_sequence[i]); 647 648 ret = regmap_write(sii902x->regmap, SII902X_TPI_AUDIO_CONFIG_BYTE3_REG, 649 config_byte3_reg); 650 if (ret) 651 goto out; 652 653 ret = regmap_bulk_write(sii902x->regmap, SII902X_TPI_I2S_STRM_HDR_BASE, 654 params->iec.status, 655 min((size_t) SII902X_TPI_I2S_STRM_HDR_SIZE, 656 sizeof(params->iec.status))); 657 if (ret) 658 goto out; 659 660 ret = hdmi_audio_infoframe_pack(¶ms->cea, infoframe_buf, 661 sizeof(infoframe_buf)); 662 if (ret < 0) { 663 dev_err(dev, "%s: Failed to pack audio infoframe: %d\n", 664 __func__, ret); 665 goto out; 666 } 667 668 ret = regmap_bulk_write(sii902x->regmap, 669 SII902X_TPI_MISC_INFOFRAME_BASE, 670 infoframe_buf, 671 min(ret, SII902X_TPI_MISC_INFOFRAME_SIZE)); 672 if (ret) 673 goto out; 674 675 /* Decode Level 0 Packets */ 676 ret = regmap_write(sii902x->regmap, SII902X_IND_SET_PAGE, 0x02); 677 if (ret) 678 goto out; 679 680 ret = regmap_write(sii902x->regmap, SII902X_IND_OFFSET, 0x24); 681 if (ret) 682 goto out; 683 684 ret = regmap_write(sii902x->regmap, SII902X_IND_VALUE, 0x02); 685 if (ret) 686 goto out; 687 688 dev_dbg(dev, "%s: hdmi audio enabled\n", __func__); 689 out: 690 mutex_unlock(&sii902x->mutex); 691 692 if (ret) { 693 clk_disable_unprepare(sii902x->audio.mclk); 694 dev_err(dev, "%s: hdmi audio enable failed: %d\n", __func__, 695 ret); 696 } 697 698 return ret; 699 } 700 701 static void sii902x_audio_shutdown(struct device *dev, void *data) 702 { 703 struct sii902x *sii902x = dev_get_drvdata(dev); 704 705 mutex_lock(&sii902x->mutex); 706 707 regmap_write(sii902x->regmap, SII902X_TPI_AUDIO_CONFIG_BYTE2_REG, 708 SII902X_TPI_AUDIO_INTERFACE_DISABLE); 709 710 mutex_unlock(&sii902x->mutex); 711 712 clk_disable_unprepare(sii902x->audio.mclk); 713 } 714 715 static int sii902x_audio_mute(struct device *dev, void *data, 716 bool enable, int direction) 717 { 718 struct sii902x *sii902x = dev_get_drvdata(dev); 719 720 mutex_lock(&sii902x->mutex); 721 722 sii902x_mute(sii902x, enable); 723 724 mutex_unlock(&sii902x->mutex); 725 726 return 0; 727 } 728 729 static int sii902x_audio_get_eld(struct device *dev, void *data, 730 uint8_t *buf, size_t len) 731 { 732 struct sii902x *sii902x = dev_get_drvdata(dev); 733 734 mutex_lock(&sii902x->mutex); 735 736 memcpy(buf, sii902x->connector.eld, 737 min(sizeof(sii902x->connector.eld), len)); 738 739 mutex_unlock(&sii902x->mutex); 740 741 return 0; 742 } 743 744 static int sii902x_audio_get_dai_id(struct snd_soc_component *component, 745 struct device_node *endpoint) 746 { 747 struct of_endpoint of_ep; 748 int ret; 749 750 ret = of_graph_parse_endpoint(endpoint, &of_ep); 751 if (ret < 0) 752 return ret; 753 754 /* 755 * HDMI sound should be located at reg = <3> 756 * Return expected DAI index 0. 757 */ 758 if (of_ep.port == SII902X_AUDIO_PORT_INDEX) 759 return 0; 760 761 return -EINVAL; 762 } 763 764 static const struct hdmi_codec_ops sii902x_audio_codec_ops = { 765 .hw_params = sii902x_audio_hw_params, 766 .audio_shutdown = sii902x_audio_shutdown, 767 .mute_stream = sii902x_audio_mute, 768 .get_eld = sii902x_audio_get_eld, 769 .get_dai_id = sii902x_audio_get_dai_id, 770 .no_capture_mute = 1, 771 }; 772 773 static int sii902x_audio_codec_init(struct sii902x *sii902x, 774 struct device *dev) 775 { 776 static const u8 audio_fifo_id[] = { 777 SII902X_TPI_I2S_CONFIG_FIFO0, 778 SII902X_TPI_I2S_CONFIG_FIFO1, 779 SII902X_TPI_I2S_CONFIG_FIFO2, 780 SII902X_TPI_I2S_CONFIG_FIFO3, 781 }; 782 static const u8 i2s_lane_id[] = { 783 SII902X_TPI_I2S_SELECT_SD0, 784 SII902X_TPI_I2S_SELECT_SD1, 785 SII902X_TPI_I2S_SELECT_SD2, 786 SII902X_TPI_I2S_SELECT_SD3, 787 }; 788 struct hdmi_codec_pdata codec_data = { 789 .ops = &sii902x_audio_codec_ops, 790 .i2s = 1, /* Only i2s support for now. */ 791 .spdif = 0, 792 .max_i2s_channels = 0, 793 }; 794 u8 lanes[4]; 795 int num_lanes, i; 796 797 if (!of_property_read_bool(dev->of_node, "#sound-dai-cells")) { 798 dev_dbg(dev, "%s: No \"#sound-dai-cells\", no audio\n", 799 __func__); 800 return 0; 801 } 802 803 num_lanes = of_property_read_variable_u8_array(dev->of_node, 804 "sil,i2s-data-lanes", 805 lanes, 1, 806 ARRAY_SIZE(lanes)); 807 808 if (num_lanes == -EINVAL) { 809 dev_dbg(dev, 810 "%s: No \"sil,i2s-data-lanes\", use default <0>\n", 811 __func__); 812 num_lanes = 1; 813 lanes[0] = 0; 814 } else if (num_lanes < 0) { 815 dev_err(dev, 816 "%s: Error gettin \"sil,i2s-data-lanes\": %d\n", 817 __func__, num_lanes); 818 return num_lanes; 819 } 820 codec_data.max_i2s_channels = 2 * num_lanes; 821 822 for (i = 0; i < num_lanes; i++) 823 sii902x->audio.i2s_fifo_sequence[i] |= audio_fifo_id[i] | 824 i2s_lane_id[lanes[i]] | SII902X_TPI_I2S_FIFO_ENABLE; 825 826 sii902x->audio.mclk = devm_clk_get_optional(dev, "mclk"); 827 if (IS_ERR(sii902x->audio.mclk)) { 828 dev_err(dev, "%s: No clock (audio mclk) found: %ld\n", 829 __func__, PTR_ERR(sii902x->audio.mclk)); 830 return PTR_ERR(sii902x->audio.mclk); 831 } 832 833 sii902x->audio.pdev = platform_device_register_data( 834 dev, HDMI_CODEC_DRV_NAME, PLATFORM_DEVID_AUTO, 835 &codec_data, sizeof(codec_data)); 836 837 return PTR_ERR_OR_ZERO(sii902x->audio.pdev); 838 } 839 840 static const struct regmap_range sii902x_volatile_ranges[] = { 841 { .range_min = 0, .range_max = 0xff }, 842 }; 843 844 static const struct regmap_access_table sii902x_volatile_table = { 845 .yes_ranges = sii902x_volatile_ranges, 846 .n_yes_ranges = ARRAY_SIZE(sii902x_volatile_ranges), 847 }; 848 849 static const struct regmap_config sii902x_regmap_config = { 850 .reg_bits = 8, 851 .val_bits = 8, 852 .disable_locking = true, /* struct sii902x mutex should be enough */ 853 .max_register = SII902X_TPI_MISC_INFOFRAME_END, 854 .volatile_table = &sii902x_volatile_table, 855 .cache_type = REGCACHE_NONE, 856 }; 857 858 static irqreturn_t sii902x_interrupt(int irq, void *data) 859 { 860 struct sii902x *sii902x = data; 861 unsigned int status = 0; 862 863 mutex_lock(&sii902x->mutex); 864 865 regmap_read(sii902x->regmap, SII902X_INT_STATUS, &status); 866 regmap_write(sii902x->regmap, SII902X_INT_STATUS, status); 867 868 mutex_unlock(&sii902x->mutex); 869 870 if ((status & SII902X_HOTPLUG_EVENT) && sii902x->bridge.dev) { 871 drm_helper_hpd_irq_event(sii902x->bridge.dev); 872 drm_bridge_hpd_notify(&sii902x->bridge, (status & SII902X_PLUGGED_STATUS) 873 ? connector_status_connected 874 : connector_status_disconnected); 875 } 876 877 return IRQ_HANDLED; 878 } 879 880 /* 881 * The purpose of sii902x_i2c_bypass_select is to enable the pass through 882 * mode of the HDMI transmitter. Do not use regmap from within this function, 883 * only use sii902x_*_unlocked functions to read/modify/write registers. 884 * We are holding the parent adapter lock here, keep this in mind before 885 * adding more i2c transactions. 886 * 887 * Also, since SII902X_SYS_CTRL_DATA is used with regmap_update_bits elsewhere 888 * in this driver, we need to make sure that we only touch 0x1A[2:1] from 889 * within sii902x_i2c_bypass_select and sii902x_i2c_bypass_deselect, and that 890 * we leave the remaining bits as we have found them. 891 */ 892 static int sii902x_i2c_bypass_select(struct i2c_mux_core *mux, u32 chan_id) 893 { 894 struct sii902x *sii902x = i2c_mux_priv(mux); 895 struct device *dev = &sii902x->i2c->dev; 896 unsigned long timeout; 897 u8 status; 898 int ret; 899 900 ret = sii902x_update_bits_unlocked(sii902x->i2c, SII902X_SYS_CTRL_DATA, 901 SII902X_SYS_CTRL_DDC_BUS_REQ, 902 SII902X_SYS_CTRL_DDC_BUS_REQ); 903 if (ret) 904 return ret; 905 906 timeout = jiffies + 907 msecs_to_jiffies(SII902X_I2C_BUS_ACQUISITION_TIMEOUT_MS); 908 do { 909 ret = sii902x_read_unlocked(sii902x->i2c, SII902X_SYS_CTRL_DATA, 910 &status); 911 if (ret) 912 return ret; 913 } while (!(status & SII902X_SYS_CTRL_DDC_BUS_GRTD) && 914 time_before(jiffies, timeout)); 915 916 if (!(status & SII902X_SYS_CTRL_DDC_BUS_GRTD)) { 917 dev_err(dev, "Failed to acquire the i2c bus\n"); 918 return -ETIMEDOUT; 919 } 920 921 return sii902x_write_unlocked(sii902x->i2c, SII902X_SYS_CTRL_DATA, 922 status); 923 } 924 925 /* 926 * The purpose of sii902x_i2c_bypass_deselect is to disable the pass through 927 * mode of the HDMI transmitter. Do not use regmap from within this function, 928 * only use sii902x_*_unlocked functions to read/modify/write registers. 929 * We are holding the parent adapter lock here, keep this in mind before 930 * adding more i2c transactions. 931 * 932 * Also, since SII902X_SYS_CTRL_DATA is used with regmap_update_bits elsewhere 933 * in this driver, we need to make sure that we only touch 0x1A[2:1] from 934 * within sii902x_i2c_bypass_select and sii902x_i2c_bypass_deselect, and that 935 * we leave the remaining bits as we have found them. 936 */ 937 static int sii902x_i2c_bypass_deselect(struct i2c_mux_core *mux, u32 chan_id) 938 { 939 struct sii902x *sii902x = i2c_mux_priv(mux); 940 struct device *dev = &sii902x->i2c->dev; 941 unsigned long timeout; 942 unsigned int retries; 943 u8 status; 944 int ret; 945 946 /* 947 * When the HDMI transmitter is in pass through mode, we need an 948 * (undocumented) additional delay between STOP and START conditions 949 * to guarantee the bus won't get stuck. 950 */ 951 udelay(30); 952 953 /* 954 * Sometimes the I2C bus can stall after failure to use the 955 * EDID channel. Retry a few times to see if things clear 956 * up, else continue anyway. 957 */ 958 retries = 5; 959 do { 960 ret = sii902x_read_unlocked(sii902x->i2c, SII902X_SYS_CTRL_DATA, 961 &status); 962 retries--; 963 } while (ret && retries); 964 if (ret) { 965 dev_err(dev, "failed to read status (%d)\n", ret); 966 return ret; 967 } 968 969 ret = sii902x_update_bits_unlocked(sii902x->i2c, SII902X_SYS_CTRL_DATA, 970 SII902X_SYS_CTRL_DDC_BUS_REQ | 971 SII902X_SYS_CTRL_DDC_BUS_GRTD, 0); 972 if (ret) 973 return ret; 974 975 timeout = jiffies + 976 msecs_to_jiffies(SII902X_I2C_BUS_ACQUISITION_TIMEOUT_MS); 977 do { 978 ret = sii902x_read_unlocked(sii902x->i2c, SII902X_SYS_CTRL_DATA, 979 &status); 980 if (ret) 981 return ret; 982 } while (status & (SII902X_SYS_CTRL_DDC_BUS_REQ | 983 SII902X_SYS_CTRL_DDC_BUS_GRTD) && 984 time_before(jiffies, timeout)); 985 986 if (status & (SII902X_SYS_CTRL_DDC_BUS_REQ | 987 SII902X_SYS_CTRL_DDC_BUS_GRTD)) { 988 dev_err(dev, "failed to release the i2c bus\n"); 989 return -ETIMEDOUT; 990 } 991 992 return 0; 993 } 994 995 static const struct drm_bridge_timings default_sii902x_timings = { 996 .input_bus_flags = DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE 997 | DRM_BUS_FLAG_SYNC_SAMPLE_NEGEDGE 998 | DRM_BUS_FLAG_DE_HIGH, 999 }; 1000 1001 static int sii902x_init(struct sii902x *sii902x) 1002 { 1003 struct device *dev = &sii902x->i2c->dev; 1004 unsigned int status = 0; 1005 u8 chipid[4]; 1006 int ret; 1007 1008 sii902x_reset(sii902x); 1009 1010 ret = regmap_write(sii902x->regmap, SII902X_REG_TPI_RQB, 0x0); 1011 if (ret) 1012 return ret; 1013 1014 ret = regmap_bulk_read(sii902x->regmap, SII902X_REG_CHIPID(0), 1015 &chipid, 4); 1016 if (ret) { 1017 dev_err(dev, "regmap_read failed %d\n", ret); 1018 return ret; 1019 } 1020 1021 if (chipid[0] != 0xb0) { 1022 dev_err(dev, "Invalid chipid: %02x (expecting 0xb0)\n", 1023 chipid[0]); 1024 return -EINVAL; 1025 } 1026 1027 /* Clear all pending interrupts */ 1028 regmap_read(sii902x->regmap, SII902X_INT_STATUS, &status); 1029 regmap_write(sii902x->regmap, SII902X_INT_STATUS, status); 1030 1031 if (sii902x->i2c->irq > 0) { 1032 regmap_write(sii902x->regmap, SII902X_INT_ENABLE, 1033 SII902X_HOTPLUG_EVENT); 1034 1035 ret = devm_request_threaded_irq(dev, sii902x->i2c->irq, NULL, 1036 sii902x_interrupt, 1037 IRQF_ONESHOT, dev_name(dev), 1038 sii902x); 1039 if (ret) 1040 return ret; 1041 } 1042 1043 sii902x->bridge.funcs = &sii902x_bridge_funcs; 1044 sii902x->bridge.of_node = dev->of_node; 1045 sii902x->bridge.timings = &default_sii902x_timings; 1046 sii902x->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID; 1047 1048 if (sii902x->i2c->irq > 0) 1049 sii902x->bridge.ops |= DRM_BRIDGE_OP_HPD; 1050 1051 drm_bridge_add(&sii902x->bridge); 1052 1053 sii902x_audio_codec_init(sii902x, dev); 1054 1055 i2c_set_clientdata(sii902x->i2c, sii902x); 1056 1057 sii902x->i2cmux = i2c_mux_alloc(sii902x->i2c->adapter, dev, 1058 1, 0, I2C_MUX_GATE, 1059 sii902x_i2c_bypass_select, 1060 sii902x_i2c_bypass_deselect); 1061 if (!sii902x->i2cmux) 1062 return -ENOMEM; 1063 1064 sii902x->i2cmux->priv = sii902x; 1065 return i2c_mux_add_adapter(sii902x->i2cmux, 0, 0, 0); 1066 } 1067 1068 static int sii902x_probe(struct i2c_client *client) 1069 { 1070 struct device *dev = &client->dev; 1071 struct device_node *endpoint; 1072 struct sii902x *sii902x; 1073 static const char * const supplies[] = {"iovcc", "cvcc12"}; 1074 int ret; 1075 1076 ret = i2c_check_functionality(client->adapter, 1077 I2C_FUNC_SMBUS_BYTE_DATA); 1078 if (!ret) { 1079 dev_err(dev, "I2C adapter not suitable\n"); 1080 return -EIO; 1081 } 1082 1083 sii902x = devm_kzalloc(dev, sizeof(*sii902x), GFP_KERNEL); 1084 if (!sii902x) 1085 return -ENOMEM; 1086 1087 sii902x->i2c = client; 1088 sii902x->regmap = devm_regmap_init_i2c(client, &sii902x_regmap_config); 1089 if (IS_ERR(sii902x->regmap)) 1090 return PTR_ERR(sii902x->regmap); 1091 1092 sii902x->reset_gpio = devm_gpiod_get_optional(dev, "reset", 1093 GPIOD_OUT_LOW); 1094 if (IS_ERR(sii902x->reset_gpio)) { 1095 dev_err(dev, "Failed to retrieve/request reset gpio: %ld\n", 1096 PTR_ERR(sii902x->reset_gpio)); 1097 return PTR_ERR(sii902x->reset_gpio); 1098 } 1099 1100 endpoint = of_graph_get_endpoint_by_regs(dev->of_node, 1, -1); 1101 if (endpoint) { 1102 struct device_node *remote = of_graph_get_remote_port_parent(endpoint); 1103 1104 of_node_put(endpoint); 1105 if (!remote) { 1106 dev_err(dev, "Endpoint in port@1 unconnected\n"); 1107 return -ENODEV; 1108 } 1109 1110 if (!of_device_is_available(remote)) { 1111 dev_err(dev, "port@1 remote device is disabled\n"); 1112 of_node_put(remote); 1113 return -ENODEV; 1114 } 1115 1116 sii902x->next_bridge = of_drm_find_bridge(remote); 1117 of_node_put(remote); 1118 if (!sii902x->next_bridge) 1119 return dev_err_probe(dev, -EPROBE_DEFER, 1120 "Failed to find remote bridge\n"); 1121 } 1122 1123 mutex_init(&sii902x->mutex); 1124 1125 ret = devm_regulator_bulk_get_enable(dev, ARRAY_SIZE(supplies), supplies); 1126 if (ret < 0) 1127 return dev_err_probe(dev, ret, "Failed to enable supplies"); 1128 1129 return sii902x_init(sii902x); 1130 } 1131 1132 static void sii902x_remove(struct i2c_client *client) 1133 1134 { 1135 struct sii902x *sii902x = i2c_get_clientdata(client); 1136 1137 i2c_mux_del_adapters(sii902x->i2cmux); 1138 drm_bridge_remove(&sii902x->bridge); 1139 } 1140 1141 static const struct of_device_id sii902x_dt_ids[] = { 1142 { .compatible = "sil,sii9022", }, 1143 { } 1144 }; 1145 MODULE_DEVICE_TABLE(of, sii902x_dt_ids); 1146 1147 static const struct i2c_device_id sii902x_i2c_ids[] = { 1148 { "sii9022", 0 }, 1149 { }, 1150 }; 1151 MODULE_DEVICE_TABLE(i2c, sii902x_i2c_ids); 1152 1153 static struct i2c_driver sii902x_driver = { 1154 .probe_new = sii902x_probe, 1155 .remove = sii902x_remove, 1156 .driver = { 1157 .name = "sii902x", 1158 .of_match_table = sii902x_dt_ids, 1159 }, 1160 .id_table = sii902x_i2c_ids, 1161 }; 1162 module_i2c_driver(sii902x_driver); 1163 1164 MODULE_AUTHOR("Boris Brezillon <boris.brezillon@free-electrons.com>"); 1165 MODULE_DESCRIPTION("SII902x RGB -> HDMI bridges"); 1166 MODULE_LICENSE("GPL"); 1167