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 struct regulator_bulk_data supplies[2]; 175 bool sink_is_hdmi; 176 /* 177 * Mutex protects audio and video functions from interfering 178 * each other, by keeping their i2c command sequences atomic. 179 */ 180 struct mutex mutex; 181 struct sii902x_audio { 182 struct platform_device *pdev; 183 struct clk *mclk; 184 u32 i2s_fifo_sequence[4]; 185 } audio; 186 }; 187 188 static int sii902x_read_unlocked(struct i2c_client *i2c, u8 reg, u8 *val) 189 { 190 union i2c_smbus_data data; 191 int ret; 192 193 ret = __i2c_smbus_xfer(i2c->adapter, i2c->addr, i2c->flags, 194 I2C_SMBUS_READ, reg, I2C_SMBUS_BYTE_DATA, &data); 195 196 if (ret < 0) 197 return ret; 198 199 *val = data.byte; 200 return 0; 201 } 202 203 static int sii902x_write_unlocked(struct i2c_client *i2c, u8 reg, u8 val) 204 { 205 union i2c_smbus_data data; 206 207 data.byte = val; 208 209 return __i2c_smbus_xfer(i2c->adapter, i2c->addr, i2c->flags, 210 I2C_SMBUS_WRITE, reg, I2C_SMBUS_BYTE_DATA, 211 &data); 212 } 213 214 static int sii902x_update_bits_unlocked(struct i2c_client *i2c, u8 reg, u8 mask, 215 u8 val) 216 { 217 int ret; 218 u8 status; 219 220 ret = sii902x_read_unlocked(i2c, reg, &status); 221 if (ret) 222 return ret; 223 status &= ~mask; 224 status |= val & mask; 225 return sii902x_write_unlocked(i2c, reg, status); 226 } 227 228 static inline struct sii902x *bridge_to_sii902x(struct drm_bridge *bridge) 229 { 230 return container_of(bridge, struct sii902x, bridge); 231 } 232 233 static inline struct sii902x *connector_to_sii902x(struct drm_connector *con) 234 { 235 return container_of(con, struct sii902x, connector); 236 } 237 238 static void sii902x_reset(struct sii902x *sii902x) 239 { 240 if (!sii902x->reset_gpio) 241 return; 242 243 gpiod_set_value(sii902x->reset_gpio, 1); 244 245 /* The datasheet says treset-min = 100us. Make it 150us to be sure. */ 246 usleep_range(150, 200); 247 248 gpiod_set_value(sii902x->reset_gpio, 0); 249 } 250 251 static enum drm_connector_status sii902x_detect(struct sii902x *sii902x) 252 { 253 unsigned int status; 254 255 mutex_lock(&sii902x->mutex); 256 257 regmap_read(sii902x->regmap, SII902X_INT_STATUS, &status); 258 259 mutex_unlock(&sii902x->mutex); 260 261 return (status & SII902X_PLUGGED_STATUS) ? 262 connector_status_connected : connector_status_disconnected; 263 } 264 265 static enum drm_connector_status 266 sii902x_connector_detect(struct drm_connector *connector, bool force) 267 { 268 struct sii902x *sii902x = connector_to_sii902x(connector); 269 270 return sii902x_detect(sii902x); 271 } 272 273 static const struct drm_connector_funcs sii902x_connector_funcs = { 274 .detect = sii902x_connector_detect, 275 .fill_modes = drm_helper_probe_single_connector_modes, 276 .destroy = drm_connector_cleanup, 277 .reset = drm_atomic_helper_connector_reset, 278 .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, 279 .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, 280 }; 281 282 static struct edid *sii902x_get_edid(struct sii902x *sii902x, 283 struct drm_connector *connector) 284 { 285 struct edid *edid; 286 287 mutex_lock(&sii902x->mutex); 288 289 edid = drm_get_edid(connector, sii902x->i2cmux->adapter[0]); 290 if (edid) { 291 if (drm_detect_hdmi_monitor(edid)) 292 sii902x->sink_is_hdmi = true; 293 else 294 sii902x->sink_is_hdmi = false; 295 } 296 297 mutex_unlock(&sii902x->mutex); 298 299 return edid; 300 } 301 302 static int sii902x_get_modes(struct drm_connector *connector) 303 { 304 struct sii902x *sii902x = connector_to_sii902x(connector); 305 struct edid *edid; 306 int num = 0; 307 308 edid = sii902x_get_edid(sii902x, connector); 309 drm_connector_update_edid_property(connector, edid); 310 if (edid) { 311 num = drm_add_edid_modes(connector, edid); 312 kfree(edid); 313 } 314 315 return num; 316 } 317 318 static enum drm_mode_status sii902x_mode_valid(struct drm_connector *connector, 319 struct drm_display_mode *mode) 320 { 321 /* TODO: check mode */ 322 323 return MODE_OK; 324 } 325 326 static const struct drm_connector_helper_funcs sii902x_connector_helper_funcs = { 327 .get_modes = sii902x_get_modes, 328 .mode_valid = sii902x_mode_valid, 329 }; 330 331 static void sii902x_bridge_disable(struct drm_bridge *bridge) 332 { 333 struct sii902x *sii902x = bridge_to_sii902x(bridge); 334 335 mutex_lock(&sii902x->mutex); 336 337 regmap_update_bits(sii902x->regmap, SII902X_SYS_CTRL_DATA, 338 SII902X_SYS_CTRL_PWR_DWN, 339 SII902X_SYS_CTRL_PWR_DWN); 340 341 mutex_unlock(&sii902x->mutex); 342 } 343 344 static void sii902x_bridge_enable(struct drm_bridge *bridge) 345 { 346 struct sii902x *sii902x = bridge_to_sii902x(bridge); 347 348 mutex_lock(&sii902x->mutex); 349 350 regmap_update_bits(sii902x->regmap, SII902X_PWR_STATE_CTRL, 351 SII902X_AVI_POWER_STATE_MSK, 352 SII902X_AVI_POWER_STATE_D(0)); 353 regmap_update_bits(sii902x->regmap, SII902X_SYS_CTRL_DATA, 354 SII902X_SYS_CTRL_PWR_DWN, 0); 355 356 mutex_unlock(&sii902x->mutex); 357 } 358 359 static void sii902x_bridge_mode_set(struct drm_bridge *bridge, 360 const struct drm_display_mode *mode, 361 const struct drm_display_mode *adj) 362 { 363 struct sii902x *sii902x = bridge_to_sii902x(bridge); 364 u8 output_mode = SII902X_SYS_CTRL_OUTPUT_DVI; 365 struct regmap *regmap = sii902x->regmap; 366 u8 buf[HDMI_INFOFRAME_SIZE(AVI)]; 367 struct hdmi_avi_infoframe frame; 368 u16 pixel_clock_10kHz = adj->clock / 10; 369 int ret; 370 371 if (sii902x->sink_is_hdmi) 372 output_mode = SII902X_SYS_CTRL_OUTPUT_HDMI; 373 374 buf[0] = pixel_clock_10kHz & 0xff; 375 buf[1] = pixel_clock_10kHz >> 8; 376 buf[2] = drm_mode_vrefresh(adj); 377 buf[3] = 0x00; 378 buf[4] = adj->hdisplay; 379 buf[5] = adj->hdisplay >> 8; 380 buf[6] = adj->vdisplay; 381 buf[7] = adj->vdisplay >> 8; 382 buf[8] = SII902X_TPI_CLK_RATIO_1X | SII902X_TPI_AVI_PIXEL_REP_NONE | 383 SII902X_TPI_AVI_PIXEL_REP_BUS_24BIT; 384 buf[9] = SII902X_TPI_AVI_INPUT_RANGE_AUTO | 385 SII902X_TPI_AVI_INPUT_COLORSPACE_RGB; 386 387 mutex_lock(&sii902x->mutex); 388 389 ret = regmap_update_bits(sii902x->regmap, SII902X_SYS_CTRL_DATA, 390 SII902X_SYS_CTRL_OUTPUT_MODE, output_mode); 391 if (ret) 392 goto out; 393 394 ret = regmap_bulk_write(regmap, SII902X_TPI_VIDEO_DATA, buf, 10); 395 if (ret) 396 goto out; 397 398 ret = drm_hdmi_avi_infoframe_from_display_mode(&frame, 399 &sii902x->connector, adj); 400 if (ret < 0) { 401 DRM_ERROR("couldn't fill AVI infoframe\n"); 402 goto out; 403 } 404 405 ret = hdmi_avi_infoframe_pack(&frame, buf, sizeof(buf)); 406 if (ret < 0) { 407 DRM_ERROR("failed to pack AVI infoframe: %d\n", ret); 408 goto out; 409 } 410 411 /* Do not send the infoframe header, but keep the CRC field. */ 412 regmap_bulk_write(regmap, SII902X_TPI_AVI_INFOFRAME, 413 buf + HDMI_INFOFRAME_HEADER_SIZE - 1, 414 HDMI_AVI_INFOFRAME_SIZE + 1); 415 416 out: 417 mutex_unlock(&sii902x->mutex); 418 } 419 420 static int sii902x_bridge_attach(struct drm_bridge *bridge, 421 enum drm_bridge_attach_flags flags) 422 { 423 struct sii902x *sii902x = bridge_to_sii902x(bridge); 424 u32 bus_format = MEDIA_BUS_FMT_RGB888_1X24; 425 struct drm_device *drm = bridge->dev; 426 int ret; 427 428 if (flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR) 429 return drm_bridge_attach(bridge->encoder, sii902x->next_bridge, 430 bridge, flags); 431 432 drm_connector_helper_add(&sii902x->connector, 433 &sii902x_connector_helper_funcs); 434 435 if (!drm_core_check_feature(drm, DRIVER_ATOMIC)) { 436 dev_err(&sii902x->i2c->dev, 437 "sii902x driver is only compatible with DRM devices supporting atomic updates\n"); 438 return -ENOTSUPP; 439 } 440 441 ret = drm_connector_init(drm, &sii902x->connector, 442 &sii902x_connector_funcs, 443 DRM_MODE_CONNECTOR_HDMIA); 444 if (ret) 445 return ret; 446 447 if (sii902x->i2c->irq > 0) 448 sii902x->connector.polled = DRM_CONNECTOR_POLL_HPD; 449 else 450 sii902x->connector.polled = DRM_CONNECTOR_POLL_CONNECT; 451 452 ret = drm_display_info_set_bus_formats(&sii902x->connector.display_info, 453 &bus_format, 1); 454 if (ret) 455 return ret; 456 457 drm_connector_attach_encoder(&sii902x->connector, bridge->encoder); 458 459 return 0; 460 } 461 462 static enum drm_connector_status sii902x_bridge_detect(struct drm_bridge *bridge) 463 { 464 struct sii902x *sii902x = bridge_to_sii902x(bridge); 465 466 return sii902x_detect(sii902x); 467 } 468 469 static struct edid *sii902x_bridge_get_edid(struct drm_bridge *bridge, 470 struct drm_connector *connector) 471 { 472 struct sii902x *sii902x = bridge_to_sii902x(bridge); 473 474 return sii902x_get_edid(sii902x, connector); 475 } 476 477 static const struct drm_bridge_funcs sii902x_bridge_funcs = { 478 .attach = sii902x_bridge_attach, 479 .mode_set = sii902x_bridge_mode_set, 480 .disable = sii902x_bridge_disable, 481 .enable = sii902x_bridge_enable, 482 .detect = sii902x_bridge_detect, 483 .get_edid = sii902x_bridge_get_edid, 484 }; 485 486 static int sii902x_mute(struct sii902x *sii902x, bool mute) 487 { 488 struct device *dev = &sii902x->i2c->dev; 489 unsigned int val = mute ? SII902X_TPI_AUDIO_MUTE_ENABLE : 490 SII902X_TPI_AUDIO_MUTE_DISABLE; 491 492 dev_dbg(dev, "%s: %s\n", __func__, mute ? "Muted" : "Unmuted"); 493 494 return regmap_update_bits(sii902x->regmap, 495 SII902X_TPI_AUDIO_CONFIG_BYTE2_REG, 496 SII902X_TPI_AUDIO_MUTE_ENABLE, val); 497 } 498 499 static const int sii902x_mclk_div_table[] = { 500 128, 256, 384, 512, 768, 1024, 1152, 192 }; 501 502 static int sii902x_select_mclk_div(u8 *i2s_config_reg, unsigned int rate, 503 unsigned int mclk) 504 { 505 int div = mclk / rate; 506 int distance = 100000; 507 u8 i, nearest = 0; 508 509 for (i = 0; i < ARRAY_SIZE(sii902x_mclk_div_table); i++) { 510 unsigned int d = abs(div - sii902x_mclk_div_table[i]); 511 512 if (d >= distance) 513 continue; 514 515 nearest = i; 516 distance = d; 517 if (d == 0) 518 break; 519 } 520 521 *i2s_config_reg |= nearest << 4; 522 523 return sii902x_mclk_div_table[nearest]; 524 } 525 526 static const struct sii902x_sample_freq { 527 u32 freq; 528 u8 val; 529 } sii902x_sample_freq[] = { 530 { .freq = 32000, .val = SII902X_TPI_AUDIO_FREQ_32KHZ }, 531 { .freq = 44000, .val = SII902X_TPI_AUDIO_FREQ_44KHZ }, 532 { .freq = 48000, .val = SII902X_TPI_AUDIO_FREQ_48KHZ }, 533 { .freq = 88000, .val = SII902X_TPI_AUDIO_FREQ_88KHZ }, 534 { .freq = 96000, .val = SII902X_TPI_AUDIO_FREQ_96KHZ }, 535 { .freq = 176000, .val = SII902X_TPI_AUDIO_FREQ_176KHZ }, 536 { .freq = 192000, .val = SII902X_TPI_AUDIO_FREQ_192KHZ }, 537 }; 538 539 static int sii902x_audio_hw_params(struct device *dev, void *data, 540 struct hdmi_codec_daifmt *daifmt, 541 struct hdmi_codec_params *params) 542 { 543 struct sii902x *sii902x = dev_get_drvdata(dev); 544 u8 i2s_config_reg = SII902X_TPI_I2S_SD_DIRECTION_MSB_FIRST; 545 u8 config_byte2_reg = (SII902X_TPI_AUDIO_INTERFACE_I2S | 546 SII902X_TPI_AUDIO_MUTE_ENABLE | 547 SII902X_TPI_AUDIO_CODING_PCM); 548 u8 config_byte3_reg = 0; 549 u8 infoframe_buf[HDMI_INFOFRAME_SIZE(AUDIO)]; 550 unsigned long mclk_rate; 551 int i, ret; 552 553 if (daifmt->bit_clk_provider || daifmt->frame_clk_provider) { 554 dev_dbg(dev, "%s: I2S clock provider mode not supported\n", 555 __func__); 556 return -EINVAL; 557 } 558 559 switch (daifmt->fmt) { 560 case HDMI_I2S: 561 i2s_config_reg |= SII902X_TPI_I2S_FIRST_BIT_SHIFT_YES | 562 SII902X_TPI_I2S_SD_JUSTIFY_LEFT; 563 break; 564 case HDMI_RIGHT_J: 565 i2s_config_reg |= SII902X_TPI_I2S_SD_JUSTIFY_RIGHT; 566 break; 567 case HDMI_LEFT_J: 568 i2s_config_reg |= SII902X_TPI_I2S_SD_JUSTIFY_LEFT; 569 break; 570 default: 571 dev_dbg(dev, "%s: Unsupported i2s format %u\n", __func__, 572 daifmt->fmt); 573 return -EINVAL; 574 } 575 576 if (daifmt->bit_clk_inv) 577 i2s_config_reg |= SII902X_TPI_I2S_SCK_EDGE_FALLING; 578 else 579 i2s_config_reg |= SII902X_TPI_I2S_SCK_EDGE_RISING; 580 581 if (daifmt->frame_clk_inv) 582 i2s_config_reg |= SII902X_TPI_I2S_WS_POLARITY_LOW; 583 else 584 i2s_config_reg |= SII902X_TPI_I2S_WS_POLARITY_HIGH; 585 586 if (params->channels > 2) 587 config_byte2_reg |= SII902X_TPI_AUDIO_LAYOUT_8_CHANNELS; 588 else 589 config_byte2_reg |= SII902X_TPI_AUDIO_LAYOUT_2_CHANNELS; 590 591 switch (params->sample_width) { 592 case 16: 593 config_byte3_reg |= SII902X_TPI_AUDIO_SAMPLE_SIZE_16; 594 break; 595 case 20: 596 config_byte3_reg |= SII902X_TPI_AUDIO_SAMPLE_SIZE_20; 597 break; 598 case 24: 599 case 32: 600 config_byte3_reg |= SII902X_TPI_AUDIO_SAMPLE_SIZE_24; 601 break; 602 default: 603 dev_err(dev, "%s: Unsupported sample width %u\n", __func__, 604 params->sample_width); 605 return -EINVAL; 606 } 607 608 for (i = 0; i < ARRAY_SIZE(sii902x_sample_freq); i++) { 609 if (params->sample_rate == sii902x_sample_freq[i].freq) { 610 config_byte3_reg |= sii902x_sample_freq[i].val; 611 break; 612 } 613 } 614 615 ret = clk_prepare_enable(sii902x->audio.mclk); 616 if (ret) { 617 dev_err(dev, "Enabling mclk failed: %d\n", ret); 618 return ret; 619 } 620 621 if (sii902x->audio.mclk) { 622 mclk_rate = clk_get_rate(sii902x->audio.mclk); 623 ret = sii902x_select_mclk_div(&i2s_config_reg, 624 params->sample_rate, mclk_rate); 625 if (mclk_rate != ret * params->sample_rate) 626 dev_dbg(dev, "Inaccurate reference clock (%ld/%d != %u)\n", 627 mclk_rate, ret, params->sample_rate); 628 } 629 630 mutex_lock(&sii902x->mutex); 631 632 ret = regmap_write(sii902x->regmap, 633 SII902X_TPI_AUDIO_CONFIG_BYTE2_REG, 634 config_byte2_reg); 635 if (ret < 0) 636 goto out; 637 638 ret = regmap_write(sii902x->regmap, SII902X_TPI_I2S_INPUT_CONFIG_REG, 639 i2s_config_reg); 640 if (ret) 641 goto out; 642 643 for (i = 0; i < ARRAY_SIZE(sii902x->audio.i2s_fifo_sequence) && 644 sii902x->audio.i2s_fifo_sequence[i]; i++) 645 regmap_write(sii902x->regmap, 646 SII902X_TPI_I2S_ENABLE_MAPPING_REG, 647 sii902x->audio.i2s_fifo_sequence[i]); 648 649 ret = regmap_write(sii902x->regmap, SII902X_TPI_AUDIO_CONFIG_BYTE3_REG, 650 config_byte3_reg); 651 if (ret) 652 goto out; 653 654 ret = regmap_bulk_write(sii902x->regmap, SII902X_TPI_I2S_STRM_HDR_BASE, 655 params->iec.status, 656 min((size_t) SII902X_TPI_I2S_STRM_HDR_SIZE, 657 sizeof(params->iec.status))); 658 if (ret) 659 goto out; 660 661 ret = hdmi_audio_infoframe_pack(¶ms->cea, infoframe_buf, 662 sizeof(infoframe_buf)); 663 if (ret < 0) { 664 dev_err(dev, "%s: Failed to pack audio infoframe: %d\n", 665 __func__, ret); 666 goto out; 667 } 668 669 ret = regmap_bulk_write(sii902x->regmap, 670 SII902X_TPI_MISC_INFOFRAME_BASE, 671 infoframe_buf, 672 min(ret, SII902X_TPI_MISC_INFOFRAME_SIZE)); 673 if (ret) 674 goto out; 675 676 /* Decode Level 0 Packets */ 677 ret = regmap_write(sii902x->regmap, SII902X_IND_SET_PAGE, 0x02); 678 if (ret) 679 goto out; 680 681 ret = regmap_write(sii902x->regmap, SII902X_IND_OFFSET, 0x24); 682 if (ret) 683 goto out; 684 685 ret = regmap_write(sii902x->regmap, SII902X_IND_VALUE, 0x02); 686 if (ret) 687 goto out; 688 689 dev_dbg(dev, "%s: hdmi audio enabled\n", __func__); 690 out: 691 mutex_unlock(&sii902x->mutex); 692 693 if (ret) { 694 clk_disable_unprepare(sii902x->audio.mclk); 695 dev_err(dev, "%s: hdmi audio enable failed: %d\n", __func__, 696 ret); 697 } 698 699 return ret; 700 } 701 702 static void sii902x_audio_shutdown(struct device *dev, void *data) 703 { 704 struct sii902x *sii902x = dev_get_drvdata(dev); 705 706 mutex_lock(&sii902x->mutex); 707 708 regmap_write(sii902x->regmap, SII902X_TPI_AUDIO_CONFIG_BYTE2_REG, 709 SII902X_TPI_AUDIO_INTERFACE_DISABLE); 710 711 mutex_unlock(&sii902x->mutex); 712 713 clk_disable_unprepare(sii902x->audio.mclk); 714 } 715 716 static int sii902x_audio_mute(struct device *dev, void *data, 717 bool enable, int direction) 718 { 719 struct sii902x *sii902x = dev_get_drvdata(dev); 720 721 mutex_lock(&sii902x->mutex); 722 723 sii902x_mute(sii902x, enable); 724 725 mutex_unlock(&sii902x->mutex); 726 727 return 0; 728 } 729 730 static int sii902x_audio_get_eld(struct device *dev, void *data, 731 uint8_t *buf, size_t len) 732 { 733 struct sii902x *sii902x = dev_get_drvdata(dev); 734 735 mutex_lock(&sii902x->mutex); 736 737 memcpy(buf, sii902x->connector.eld, 738 min(sizeof(sii902x->connector.eld), len)); 739 740 mutex_unlock(&sii902x->mutex); 741 742 return 0; 743 } 744 745 static int sii902x_audio_get_dai_id(struct snd_soc_component *component, 746 struct device_node *endpoint) 747 { 748 struct of_endpoint of_ep; 749 int ret; 750 751 ret = of_graph_parse_endpoint(endpoint, &of_ep); 752 if (ret < 0) 753 return ret; 754 755 /* 756 * HDMI sound should be located at reg = <3> 757 * Return expected DAI index 0. 758 */ 759 if (of_ep.port == SII902X_AUDIO_PORT_INDEX) 760 return 0; 761 762 return -EINVAL; 763 } 764 765 static const struct hdmi_codec_ops sii902x_audio_codec_ops = { 766 .hw_params = sii902x_audio_hw_params, 767 .audio_shutdown = sii902x_audio_shutdown, 768 .mute_stream = sii902x_audio_mute, 769 .get_eld = sii902x_audio_get_eld, 770 .get_dai_id = sii902x_audio_get_dai_id, 771 .no_capture_mute = 1, 772 }; 773 774 static int sii902x_audio_codec_init(struct sii902x *sii902x, 775 struct device *dev) 776 { 777 static const u8 audio_fifo_id[] = { 778 SII902X_TPI_I2S_CONFIG_FIFO0, 779 SII902X_TPI_I2S_CONFIG_FIFO1, 780 SII902X_TPI_I2S_CONFIG_FIFO2, 781 SII902X_TPI_I2S_CONFIG_FIFO3, 782 }; 783 static const u8 i2s_lane_id[] = { 784 SII902X_TPI_I2S_SELECT_SD0, 785 SII902X_TPI_I2S_SELECT_SD1, 786 SII902X_TPI_I2S_SELECT_SD2, 787 SII902X_TPI_I2S_SELECT_SD3, 788 }; 789 struct hdmi_codec_pdata codec_data = { 790 .ops = &sii902x_audio_codec_ops, 791 .i2s = 1, /* Only i2s support for now. */ 792 .spdif = 0, 793 .max_i2s_channels = 0, 794 }; 795 u8 lanes[4]; 796 int num_lanes, i; 797 798 if (!of_property_read_bool(dev->of_node, "#sound-dai-cells")) { 799 dev_dbg(dev, "%s: No \"#sound-dai-cells\", no audio\n", 800 __func__); 801 return 0; 802 } 803 804 num_lanes = of_property_read_variable_u8_array(dev->of_node, 805 "sil,i2s-data-lanes", 806 lanes, 1, 807 ARRAY_SIZE(lanes)); 808 809 if (num_lanes == -EINVAL) { 810 dev_dbg(dev, 811 "%s: No \"sil,i2s-data-lanes\", use default <0>\n", 812 __func__); 813 num_lanes = 1; 814 lanes[0] = 0; 815 } else if (num_lanes < 0) { 816 dev_err(dev, 817 "%s: Error gettin \"sil,i2s-data-lanes\": %d\n", 818 __func__, num_lanes); 819 return num_lanes; 820 } 821 codec_data.max_i2s_channels = 2 * num_lanes; 822 823 for (i = 0; i < num_lanes; i++) 824 sii902x->audio.i2s_fifo_sequence[i] |= audio_fifo_id[i] | 825 i2s_lane_id[lanes[i]] | SII902X_TPI_I2S_FIFO_ENABLE; 826 827 sii902x->audio.mclk = devm_clk_get_optional(dev, "mclk"); 828 if (IS_ERR(sii902x->audio.mclk)) { 829 dev_err(dev, "%s: No clock (audio mclk) found: %ld\n", 830 __func__, PTR_ERR(sii902x->audio.mclk)); 831 return PTR_ERR(sii902x->audio.mclk); 832 } 833 834 sii902x->audio.pdev = platform_device_register_data( 835 dev, HDMI_CODEC_DRV_NAME, PLATFORM_DEVID_AUTO, 836 &codec_data, sizeof(codec_data)); 837 838 return PTR_ERR_OR_ZERO(sii902x->audio.pdev); 839 } 840 841 static const struct regmap_range sii902x_volatile_ranges[] = { 842 { .range_min = 0, .range_max = 0xff }, 843 }; 844 845 static const struct regmap_access_table sii902x_volatile_table = { 846 .yes_ranges = sii902x_volatile_ranges, 847 .n_yes_ranges = ARRAY_SIZE(sii902x_volatile_ranges), 848 }; 849 850 static const struct regmap_config sii902x_regmap_config = { 851 .reg_bits = 8, 852 .val_bits = 8, 853 .disable_locking = true, /* struct sii902x mutex should be enough */ 854 .max_register = SII902X_TPI_MISC_INFOFRAME_END, 855 .volatile_table = &sii902x_volatile_table, 856 .cache_type = REGCACHE_NONE, 857 }; 858 859 static irqreturn_t sii902x_interrupt(int irq, void *data) 860 { 861 struct sii902x *sii902x = data; 862 unsigned int status = 0; 863 864 mutex_lock(&sii902x->mutex); 865 866 regmap_read(sii902x->regmap, SII902X_INT_STATUS, &status); 867 regmap_write(sii902x->regmap, SII902X_INT_STATUS, status); 868 869 mutex_unlock(&sii902x->mutex); 870 871 if ((status & SII902X_HOTPLUG_EVENT) && sii902x->bridge.dev) { 872 drm_helper_hpd_irq_event(sii902x->bridge.dev); 873 drm_bridge_hpd_notify(&sii902x->bridge, (status & SII902X_PLUGGED_STATUS) 874 ? connector_status_connected 875 : connector_status_disconnected); 876 } 877 878 return IRQ_HANDLED; 879 } 880 881 /* 882 * The purpose of sii902x_i2c_bypass_select is to enable the pass through 883 * mode of the HDMI transmitter. Do not use regmap from within this function, 884 * only use sii902x_*_unlocked functions to read/modify/write registers. 885 * We are holding the parent adapter lock here, keep this in mind before 886 * adding more i2c transactions. 887 * 888 * Also, since SII902X_SYS_CTRL_DATA is used with regmap_update_bits elsewhere 889 * in this driver, we need to make sure that we only touch 0x1A[2:1] from 890 * within sii902x_i2c_bypass_select and sii902x_i2c_bypass_deselect, and that 891 * we leave the remaining bits as we have found them. 892 */ 893 static int sii902x_i2c_bypass_select(struct i2c_mux_core *mux, u32 chan_id) 894 { 895 struct sii902x *sii902x = i2c_mux_priv(mux); 896 struct device *dev = &sii902x->i2c->dev; 897 unsigned long timeout; 898 u8 status; 899 int ret; 900 901 ret = sii902x_update_bits_unlocked(sii902x->i2c, SII902X_SYS_CTRL_DATA, 902 SII902X_SYS_CTRL_DDC_BUS_REQ, 903 SII902X_SYS_CTRL_DDC_BUS_REQ); 904 if (ret) 905 return ret; 906 907 timeout = jiffies + 908 msecs_to_jiffies(SII902X_I2C_BUS_ACQUISITION_TIMEOUT_MS); 909 do { 910 ret = sii902x_read_unlocked(sii902x->i2c, SII902X_SYS_CTRL_DATA, 911 &status); 912 if (ret) 913 return ret; 914 } while (!(status & SII902X_SYS_CTRL_DDC_BUS_GRTD) && 915 time_before(jiffies, timeout)); 916 917 if (!(status & SII902X_SYS_CTRL_DDC_BUS_GRTD)) { 918 dev_err(dev, "Failed to acquire the i2c bus\n"); 919 return -ETIMEDOUT; 920 } 921 922 return sii902x_write_unlocked(sii902x->i2c, SII902X_SYS_CTRL_DATA, 923 status); 924 } 925 926 /* 927 * The purpose of sii902x_i2c_bypass_deselect is to disable the pass through 928 * mode of the HDMI transmitter. Do not use regmap from within this function, 929 * only use sii902x_*_unlocked functions to read/modify/write registers. 930 * We are holding the parent adapter lock here, keep this in mind before 931 * adding more i2c transactions. 932 * 933 * Also, since SII902X_SYS_CTRL_DATA is used with regmap_update_bits elsewhere 934 * in this driver, we need to make sure that we only touch 0x1A[2:1] from 935 * within sii902x_i2c_bypass_select and sii902x_i2c_bypass_deselect, and that 936 * we leave the remaining bits as we have found them. 937 */ 938 static int sii902x_i2c_bypass_deselect(struct i2c_mux_core *mux, u32 chan_id) 939 { 940 struct sii902x *sii902x = i2c_mux_priv(mux); 941 struct device *dev = &sii902x->i2c->dev; 942 unsigned long timeout; 943 unsigned int retries; 944 u8 status; 945 int ret; 946 947 /* 948 * When the HDMI transmitter is in pass through mode, we need an 949 * (undocumented) additional delay between STOP and START conditions 950 * to guarantee the bus won't get stuck. 951 */ 952 udelay(30); 953 954 /* 955 * Sometimes the I2C bus can stall after failure to use the 956 * EDID channel. Retry a few times to see if things clear 957 * up, else continue anyway. 958 */ 959 retries = 5; 960 do { 961 ret = sii902x_read_unlocked(sii902x->i2c, SII902X_SYS_CTRL_DATA, 962 &status); 963 retries--; 964 } while (ret && retries); 965 if (ret) { 966 dev_err(dev, "failed to read status (%d)\n", ret); 967 return ret; 968 } 969 970 ret = sii902x_update_bits_unlocked(sii902x->i2c, SII902X_SYS_CTRL_DATA, 971 SII902X_SYS_CTRL_DDC_BUS_REQ | 972 SII902X_SYS_CTRL_DDC_BUS_GRTD, 0); 973 if (ret) 974 return ret; 975 976 timeout = jiffies + 977 msecs_to_jiffies(SII902X_I2C_BUS_ACQUISITION_TIMEOUT_MS); 978 do { 979 ret = sii902x_read_unlocked(sii902x->i2c, SII902X_SYS_CTRL_DATA, 980 &status); 981 if (ret) 982 return ret; 983 } while (status & (SII902X_SYS_CTRL_DDC_BUS_REQ | 984 SII902X_SYS_CTRL_DDC_BUS_GRTD) && 985 time_before(jiffies, timeout)); 986 987 if (status & (SII902X_SYS_CTRL_DDC_BUS_REQ | 988 SII902X_SYS_CTRL_DDC_BUS_GRTD)) { 989 dev_err(dev, "failed to release the i2c bus\n"); 990 return -ETIMEDOUT; 991 } 992 993 return 0; 994 } 995 996 static const struct drm_bridge_timings default_sii902x_timings = { 997 .input_bus_flags = DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE 998 | DRM_BUS_FLAG_SYNC_SAMPLE_NEGEDGE 999 | DRM_BUS_FLAG_DE_HIGH, 1000 }; 1001 1002 static int sii902x_init(struct sii902x *sii902x) 1003 { 1004 struct device *dev = &sii902x->i2c->dev; 1005 unsigned int status = 0; 1006 u8 chipid[4]; 1007 int ret; 1008 1009 sii902x_reset(sii902x); 1010 1011 ret = regmap_write(sii902x->regmap, SII902X_REG_TPI_RQB, 0x0); 1012 if (ret) 1013 return ret; 1014 1015 ret = regmap_bulk_read(sii902x->regmap, SII902X_REG_CHIPID(0), 1016 &chipid, 4); 1017 if (ret) { 1018 dev_err(dev, "regmap_read failed %d\n", ret); 1019 return ret; 1020 } 1021 1022 if (chipid[0] != 0xb0) { 1023 dev_err(dev, "Invalid chipid: %02x (expecting 0xb0)\n", 1024 chipid[0]); 1025 return -EINVAL; 1026 } 1027 1028 /* Clear all pending interrupts */ 1029 regmap_read(sii902x->regmap, SII902X_INT_STATUS, &status); 1030 regmap_write(sii902x->regmap, SII902X_INT_STATUS, status); 1031 1032 if (sii902x->i2c->irq > 0) { 1033 regmap_write(sii902x->regmap, SII902X_INT_ENABLE, 1034 SII902X_HOTPLUG_EVENT); 1035 1036 ret = devm_request_threaded_irq(dev, sii902x->i2c->irq, NULL, 1037 sii902x_interrupt, 1038 IRQF_ONESHOT, dev_name(dev), 1039 sii902x); 1040 if (ret) 1041 return ret; 1042 } 1043 1044 sii902x->bridge.funcs = &sii902x_bridge_funcs; 1045 sii902x->bridge.of_node = dev->of_node; 1046 sii902x->bridge.timings = &default_sii902x_timings; 1047 sii902x->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID; 1048 1049 if (sii902x->i2c->irq > 0) 1050 sii902x->bridge.ops |= DRM_BRIDGE_OP_HPD; 1051 1052 drm_bridge_add(&sii902x->bridge); 1053 1054 sii902x_audio_codec_init(sii902x, dev); 1055 1056 i2c_set_clientdata(sii902x->i2c, sii902x); 1057 1058 sii902x->i2cmux = i2c_mux_alloc(sii902x->i2c->adapter, dev, 1059 1, 0, I2C_MUX_GATE, 1060 sii902x_i2c_bypass_select, 1061 sii902x_i2c_bypass_deselect); 1062 if (!sii902x->i2cmux) 1063 return -ENOMEM; 1064 1065 sii902x->i2cmux->priv = sii902x; 1066 return i2c_mux_add_adapter(sii902x->i2cmux, 0, 0, 0); 1067 } 1068 1069 static int sii902x_probe(struct i2c_client *client, 1070 const struct i2c_device_id *id) 1071 { 1072 struct device *dev = &client->dev; 1073 struct device_node *endpoint; 1074 struct sii902x *sii902x; 1075 int ret; 1076 1077 ret = i2c_check_functionality(client->adapter, 1078 I2C_FUNC_SMBUS_BYTE_DATA); 1079 if (!ret) { 1080 dev_err(dev, "I2C adapter not suitable\n"); 1081 return -EIO; 1082 } 1083 1084 sii902x = devm_kzalloc(dev, sizeof(*sii902x), GFP_KERNEL); 1085 if (!sii902x) 1086 return -ENOMEM; 1087 1088 sii902x->i2c = client; 1089 sii902x->regmap = devm_regmap_init_i2c(client, &sii902x_regmap_config); 1090 if (IS_ERR(sii902x->regmap)) 1091 return PTR_ERR(sii902x->regmap); 1092 1093 sii902x->reset_gpio = devm_gpiod_get_optional(dev, "reset", 1094 GPIOD_OUT_LOW); 1095 if (IS_ERR(sii902x->reset_gpio)) { 1096 dev_err(dev, "Failed to retrieve/request reset gpio: %ld\n", 1097 PTR_ERR(sii902x->reset_gpio)); 1098 return PTR_ERR(sii902x->reset_gpio); 1099 } 1100 1101 endpoint = of_graph_get_endpoint_by_regs(dev->of_node, 1, -1); 1102 if (endpoint) { 1103 struct device_node *remote = of_graph_get_remote_port_parent(endpoint); 1104 1105 of_node_put(endpoint); 1106 if (!remote) { 1107 dev_err(dev, "Endpoint in port@1 unconnected\n"); 1108 return -ENODEV; 1109 } 1110 1111 if (!of_device_is_available(remote)) { 1112 dev_err(dev, "port@1 remote device is disabled\n"); 1113 of_node_put(remote); 1114 return -ENODEV; 1115 } 1116 1117 sii902x->next_bridge = of_drm_find_bridge(remote); 1118 of_node_put(remote); 1119 if (!sii902x->next_bridge) 1120 return -EPROBE_DEFER; 1121 } 1122 1123 mutex_init(&sii902x->mutex); 1124 1125 sii902x->supplies[0].supply = "iovcc"; 1126 sii902x->supplies[1].supply = "cvcc12"; 1127 ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(sii902x->supplies), 1128 sii902x->supplies); 1129 if (ret < 0) 1130 return ret; 1131 1132 ret = regulator_bulk_enable(ARRAY_SIZE(sii902x->supplies), 1133 sii902x->supplies); 1134 if (ret < 0) { 1135 dev_err_probe(dev, ret, "Failed to enable supplies"); 1136 return ret; 1137 } 1138 1139 ret = sii902x_init(sii902x); 1140 if (ret < 0) { 1141 regulator_bulk_disable(ARRAY_SIZE(sii902x->supplies), 1142 sii902x->supplies); 1143 } 1144 1145 return ret; 1146 } 1147 1148 static int sii902x_remove(struct i2c_client *client) 1149 1150 { 1151 struct sii902x *sii902x = i2c_get_clientdata(client); 1152 1153 i2c_mux_del_adapters(sii902x->i2cmux); 1154 drm_bridge_remove(&sii902x->bridge); 1155 regulator_bulk_disable(ARRAY_SIZE(sii902x->supplies), 1156 sii902x->supplies); 1157 1158 return 0; 1159 } 1160 1161 static const struct of_device_id sii902x_dt_ids[] = { 1162 { .compatible = "sil,sii9022", }, 1163 { } 1164 }; 1165 MODULE_DEVICE_TABLE(of, sii902x_dt_ids); 1166 1167 static const struct i2c_device_id sii902x_i2c_ids[] = { 1168 { "sii9022", 0 }, 1169 { }, 1170 }; 1171 MODULE_DEVICE_TABLE(i2c, sii902x_i2c_ids); 1172 1173 static struct i2c_driver sii902x_driver = { 1174 .probe = sii902x_probe, 1175 .remove = sii902x_remove, 1176 .driver = { 1177 .name = "sii902x", 1178 .of_match_table = sii902x_dt_ids, 1179 }, 1180 .id_table = sii902x_i2c_ids, 1181 }; 1182 module_i2c_driver(sii902x_driver); 1183 1184 MODULE_AUTHOR("Boris Brezillon <boris.brezillon@free-electrons.com>"); 1185 MODULE_DESCRIPTION("SII902x RGB -> HDMI bridges"); 1186 MODULE_LICENSE("GPL"); 1187