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/module.h> 19 #include <linux/regmap.h> 20 #include <linux/regulator/consumer.h> 21 #include <linux/clk.h> 22 23 #include <drm/drm_atomic_helper.h> 24 #include <drm/drm_bridge.h> 25 #include <drm/drm_drv.h> 26 #include <drm/drm_edid.h> 27 #include <drm/drm_print.h> 28 #include <drm/drm_probe_helper.h> 29 30 #include <sound/hdmi-codec.h> 31 32 #define SII902X_TPI_VIDEO_DATA 0x0 33 34 #define SII902X_TPI_PIXEL_REPETITION 0x8 35 #define SII902X_TPI_AVI_PIXEL_REP_BUS_24BIT BIT(5) 36 #define SII902X_TPI_AVI_PIXEL_REP_RISING_EDGE BIT(4) 37 #define SII902X_TPI_AVI_PIXEL_REP_4X 3 38 #define SII902X_TPI_AVI_PIXEL_REP_2X 1 39 #define SII902X_TPI_AVI_PIXEL_REP_NONE 0 40 #define SII902X_TPI_CLK_RATIO_HALF (0 << 6) 41 #define SII902X_TPI_CLK_RATIO_1X (1 << 6) 42 #define SII902X_TPI_CLK_RATIO_2X (2 << 6) 43 #define SII902X_TPI_CLK_RATIO_4X (3 << 6) 44 45 #define SII902X_TPI_AVI_IN_FORMAT 0x9 46 #define SII902X_TPI_AVI_INPUT_BITMODE_12BIT BIT(7) 47 #define SII902X_TPI_AVI_INPUT_DITHER BIT(6) 48 #define SII902X_TPI_AVI_INPUT_RANGE_LIMITED (2 << 2) 49 #define SII902X_TPI_AVI_INPUT_RANGE_FULL (1 << 2) 50 #define SII902X_TPI_AVI_INPUT_RANGE_AUTO (0 << 2) 51 #define SII902X_TPI_AVI_INPUT_COLORSPACE_BLACK (3 << 0) 52 #define SII902X_TPI_AVI_INPUT_COLORSPACE_YUV422 (2 << 0) 53 #define SII902X_TPI_AVI_INPUT_COLORSPACE_YUV444 (1 << 0) 54 #define SII902X_TPI_AVI_INPUT_COLORSPACE_RGB (0 << 0) 55 56 #define SII902X_TPI_AVI_INFOFRAME 0x0c 57 58 #define SII902X_SYS_CTRL_DATA 0x1a 59 #define SII902X_SYS_CTRL_PWR_DWN BIT(4) 60 #define SII902X_SYS_CTRL_AV_MUTE BIT(3) 61 #define SII902X_SYS_CTRL_DDC_BUS_REQ BIT(2) 62 #define SII902X_SYS_CTRL_DDC_BUS_GRTD BIT(1) 63 #define SII902X_SYS_CTRL_OUTPUT_MODE BIT(0) 64 #define SII902X_SYS_CTRL_OUTPUT_HDMI 1 65 #define SII902X_SYS_CTRL_OUTPUT_DVI 0 66 67 #define SII902X_REG_CHIPID(n) (0x1b + (n)) 68 69 #define SII902X_PWR_STATE_CTRL 0x1e 70 #define SII902X_AVI_POWER_STATE_MSK GENMASK(1, 0) 71 #define SII902X_AVI_POWER_STATE_D(l) ((l) & SII902X_AVI_POWER_STATE_MSK) 72 73 /* Audio */ 74 #define SII902X_TPI_I2S_ENABLE_MAPPING_REG 0x1f 75 #define SII902X_TPI_I2S_CONFIG_FIFO0 (0 << 0) 76 #define SII902X_TPI_I2S_CONFIG_FIFO1 (1 << 0) 77 #define SII902X_TPI_I2S_CONFIG_FIFO2 (2 << 0) 78 #define SII902X_TPI_I2S_CONFIG_FIFO3 (3 << 0) 79 #define SII902X_TPI_I2S_LEFT_RIGHT_SWAP (1 << 2) 80 #define SII902X_TPI_I2S_AUTO_DOWNSAMPLE (1 << 3) 81 #define SII902X_TPI_I2S_SELECT_SD0 (0 << 4) 82 #define SII902X_TPI_I2S_SELECT_SD1 (1 << 4) 83 #define SII902X_TPI_I2S_SELECT_SD2 (2 << 4) 84 #define SII902X_TPI_I2S_SELECT_SD3 (3 << 4) 85 #define SII902X_TPI_I2S_FIFO_ENABLE (1 << 7) 86 87 #define SII902X_TPI_I2S_INPUT_CONFIG_REG 0x20 88 #define SII902X_TPI_I2S_FIRST_BIT_SHIFT_YES (0 << 0) 89 #define SII902X_TPI_I2S_FIRST_BIT_SHIFT_NO (1 << 0) 90 #define SII902X_TPI_I2S_SD_DIRECTION_MSB_FIRST (0 << 1) 91 #define SII902X_TPI_I2S_SD_DIRECTION_LSB_FIRST (1 << 1) 92 #define SII902X_TPI_I2S_SD_JUSTIFY_LEFT (0 << 2) 93 #define SII902X_TPI_I2S_SD_JUSTIFY_RIGHT (1 << 2) 94 #define SII902X_TPI_I2S_WS_POLARITY_LOW (0 << 3) 95 #define SII902X_TPI_I2S_WS_POLARITY_HIGH (1 << 3) 96 #define SII902X_TPI_I2S_MCLK_MULTIPLIER_128 (0 << 4) 97 #define SII902X_TPI_I2S_MCLK_MULTIPLIER_256 (1 << 4) 98 #define SII902X_TPI_I2S_MCLK_MULTIPLIER_384 (2 << 4) 99 #define SII902X_TPI_I2S_MCLK_MULTIPLIER_512 (3 << 4) 100 #define SII902X_TPI_I2S_MCLK_MULTIPLIER_768 (4 << 4) 101 #define SII902X_TPI_I2S_MCLK_MULTIPLIER_1024 (5 << 4) 102 #define SII902X_TPI_I2S_MCLK_MULTIPLIER_1152 (6 << 4) 103 #define SII902X_TPI_I2S_MCLK_MULTIPLIER_192 (7 << 4) 104 #define SII902X_TPI_I2S_SCK_EDGE_FALLING (0 << 7) 105 #define SII902X_TPI_I2S_SCK_EDGE_RISING (1 << 7) 106 107 #define SII902X_TPI_I2S_STRM_HDR_BASE 0x21 108 #define SII902X_TPI_I2S_STRM_HDR_SIZE 5 109 110 #define SII902X_TPI_AUDIO_CONFIG_BYTE2_REG 0x26 111 #define SII902X_TPI_AUDIO_CODING_STREAM_HEADER (0 << 0) 112 #define SII902X_TPI_AUDIO_CODING_PCM (1 << 0) 113 #define SII902X_TPI_AUDIO_CODING_AC3 (2 << 0) 114 #define SII902X_TPI_AUDIO_CODING_MPEG1 (3 << 0) 115 #define SII902X_TPI_AUDIO_CODING_MP3 (4 << 0) 116 #define SII902X_TPI_AUDIO_CODING_MPEG2 (5 << 0) 117 #define SII902X_TPI_AUDIO_CODING_AAC (6 << 0) 118 #define SII902X_TPI_AUDIO_CODING_DTS (7 << 0) 119 #define SII902X_TPI_AUDIO_CODING_ATRAC (8 << 0) 120 #define SII902X_TPI_AUDIO_MUTE_DISABLE (0 << 4) 121 #define SII902X_TPI_AUDIO_MUTE_ENABLE (1 << 4) 122 #define SII902X_TPI_AUDIO_LAYOUT_2_CHANNELS (0 << 5) 123 #define SII902X_TPI_AUDIO_LAYOUT_8_CHANNELS (1 << 5) 124 #define SII902X_TPI_AUDIO_INTERFACE_DISABLE (0 << 6) 125 #define SII902X_TPI_AUDIO_INTERFACE_SPDIF (1 << 6) 126 #define SII902X_TPI_AUDIO_INTERFACE_I2S (2 << 6) 127 128 #define SII902X_TPI_AUDIO_CONFIG_BYTE3_REG 0x27 129 #define SII902X_TPI_AUDIO_FREQ_STREAM (0 << 3) 130 #define SII902X_TPI_AUDIO_FREQ_32KHZ (1 << 3) 131 #define SII902X_TPI_AUDIO_FREQ_44KHZ (2 << 3) 132 #define SII902X_TPI_AUDIO_FREQ_48KHZ (3 << 3) 133 #define SII902X_TPI_AUDIO_FREQ_88KHZ (4 << 3) 134 #define SII902X_TPI_AUDIO_FREQ_96KHZ (5 << 3) 135 #define SII902X_TPI_AUDIO_FREQ_176KHZ (6 << 3) 136 #define SII902X_TPI_AUDIO_FREQ_192KHZ (7 << 3) 137 #define SII902X_TPI_AUDIO_SAMPLE_SIZE_STREAM (0 << 6) 138 #define SII902X_TPI_AUDIO_SAMPLE_SIZE_16 (1 << 6) 139 #define SII902X_TPI_AUDIO_SAMPLE_SIZE_20 (2 << 6) 140 #define SII902X_TPI_AUDIO_SAMPLE_SIZE_24 (3 << 6) 141 142 #define SII902X_TPI_AUDIO_CONFIG_BYTE4_REG 0x28 143 144 #define SII902X_INT_ENABLE 0x3c 145 #define SII902X_INT_STATUS 0x3d 146 #define SII902X_HOTPLUG_EVENT BIT(0) 147 #define SII902X_PLUGGED_STATUS BIT(2) 148 149 #define SII902X_REG_TPI_RQB 0xc7 150 151 /* Indirect internal register access */ 152 #define SII902X_IND_SET_PAGE 0xbc 153 #define SII902X_IND_OFFSET 0xbd 154 #define SII902X_IND_VALUE 0xbe 155 156 #define SII902X_TPI_MISC_INFOFRAME_BASE 0xbf 157 #define SII902X_TPI_MISC_INFOFRAME_END 0xde 158 #define SII902X_TPI_MISC_INFOFRAME_SIZE \ 159 (SII902X_TPI_MISC_INFOFRAME_END - SII902X_TPI_MISC_INFOFRAME_BASE) 160 161 #define SII902X_I2C_BUS_ACQUISITION_TIMEOUT_MS 500 162 163 #define SII902X_AUDIO_PORT_INDEX 3 164 165 struct sii902x { 166 struct i2c_client *i2c; 167 struct regmap *regmap; 168 struct drm_bridge bridge; 169 struct drm_bridge *next_bridge; 170 struct drm_connector connector; 171 struct gpio_desc *reset_gpio; 172 struct i2c_mux_core *i2cmux; 173 struct regulator_bulk_data supplies[2]; 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(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(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_master || daifmt->frame_clk_master) { 553 dev_dbg(dev, "%s: I2S master mode not supported\n", __func__); 554 return -EINVAL; 555 } 556 557 switch (daifmt->fmt) { 558 case HDMI_I2S: 559 i2s_config_reg |= SII902X_TPI_I2S_FIRST_BIT_SHIFT_YES | 560 SII902X_TPI_I2S_SD_JUSTIFY_LEFT; 561 break; 562 case HDMI_RIGHT_J: 563 i2s_config_reg |= SII902X_TPI_I2S_SD_JUSTIFY_RIGHT; 564 break; 565 case HDMI_LEFT_J: 566 i2s_config_reg |= SII902X_TPI_I2S_SD_JUSTIFY_LEFT; 567 break; 568 default: 569 dev_dbg(dev, "%s: Unsupported i2s format %u\n", __func__, 570 daifmt->fmt); 571 return -EINVAL; 572 } 573 574 if (daifmt->bit_clk_inv) 575 i2s_config_reg |= SII902X_TPI_I2S_SCK_EDGE_FALLING; 576 else 577 i2s_config_reg |= SII902X_TPI_I2S_SCK_EDGE_RISING; 578 579 if (daifmt->frame_clk_inv) 580 i2s_config_reg |= SII902X_TPI_I2S_WS_POLARITY_LOW; 581 else 582 i2s_config_reg |= SII902X_TPI_I2S_WS_POLARITY_HIGH; 583 584 if (params->channels > 2) 585 config_byte2_reg |= SII902X_TPI_AUDIO_LAYOUT_8_CHANNELS; 586 else 587 config_byte2_reg |= SII902X_TPI_AUDIO_LAYOUT_2_CHANNELS; 588 589 switch (params->sample_width) { 590 case 16: 591 config_byte3_reg |= SII902X_TPI_AUDIO_SAMPLE_SIZE_16; 592 break; 593 case 20: 594 config_byte3_reg |= SII902X_TPI_AUDIO_SAMPLE_SIZE_20; 595 break; 596 case 24: 597 case 32: 598 config_byte3_reg |= SII902X_TPI_AUDIO_SAMPLE_SIZE_24; 599 break; 600 default: 601 dev_err(dev, "%s: Unsupported sample width %u\n", __func__, 602 params->sample_width); 603 return -EINVAL; 604 } 605 606 for (i = 0; i < ARRAY_SIZE(sii902x_sample_freq); i++) { 607 if (params->sample_rate == sii902x_sample_freq[i].freq) { 608 config_byte3_reg |= sii902x_sample_freq[i].val; 609 break; 610 } 611 } 612 613 ret = clk_prepare_enable(sii902x->audio.mclk); 614 if (ret) { 615 dev_err(dev, "Enabling mclk failed: %d\n", ret); 616 return ret; 617 } 618 619 if (sii902x->audio.mclk) { 620 mclk_rate = clk_get_rate(sii902x->audio.mclk); 621 ret = sii902x_select_mclk_div(&i2s_config_reg, 622 params->sample_rate, mclk_rate); 623 if (mclk_rate != ret * params->sample_rate) 624 dev_dbg(dev, "Inaccurate reference clock (%ld/%d != %u)\n", 625 mclk_rate, ret, params->sample_rate); 626 } 627 628 mutex_lock(&sii902x->mutex); 629 630 ret = regmap_write(sii902x->regmap, 631 SII902X_TPI_AUDIO_CONFIG_BYTE2_REG, 632 config_byte2_reg); 633 if (ret < 0) 634 goto out; 635 636 ret = regmap_write(sii902x->regmap, SII902X_TPI_I2S_INPUT_CONFIG_REG, 637 i2s_config_reg); 638 if (ret) 639 goto out; 640 641 for (i = 0; i < ARRAY_SIZE(sii902x->audio.i2s_fifo_sequence) && 642 sii902x->audio.i2s_fifo_sequence[i]; i++) 643 regmap_write(sii902x->regmap, 644 SII902X_TPI_I2S_ENABLE_MAPPING_REG, 645 sii902x->audio.i2s_fifo_sequence[i]); 646 647 ret = regmap_write(sii902x->regmap, SII902X_TPI_AUDIO_CONFIG_BYTE3_REG, 648 config_byte3_reg); 649 if (ret) 650 goto out; 651 652 ret = regmap_bulk_write(sii902x->regmap, SII902X_TPI_I2S_STRM_HDR_BASE, 653 params->iec.status, 654 min((size_t) SII902X_TPI_I2S_STRM_HDR_SIZE, 655 sizeof(params->iec.status))); 656 if (ret) 657 goto out; 658 659 ret = hdmi_audio_infoframe_pack(¶ms->cea, infoframe_buf, 660 sizeof(infoframe_buf)); 661 if (ret < 0) { 662 dev_err(dev, "%s: Failed to pack audio infoframe: %d\n", 663 __func__, ret); 664 goto out; 665 } 666 667 ret = regmap_bulk_write(sii902x->regmap, 668 SII902X_TPI_MISC_INFOFRAME_BASE, 669 infoframe_buf, 670 min(ret, SII902X_TPI_MISC_INFOFRAME_SIZE)); 671 if (ret) 672 goto out; 673 674 /* Decode Level 0 Packets */ 675 ret = regmap_write(sii902x->regmap, SII902X_IND_SET_PAGE, 0x02); 676 if (ret) 677 goto out; 678 679 ret = regmap_write(sii902x->regmap, SII902X_IND_OFFSET, 0x24); 680 if (ret) 681 goto out; 682 683 ret = regmap_write(sii902x->regmap, SII902X_IND_VALUE, 0x02); 684 if (ret) 685 goto out; 686 687 dev_dbg(dev, "%s: hdmi audio enabled\n", __func__); 688 out: 689 mutex_unlock(&sii902x->mutex); 690 691 if (ret) { 692 clk_disable_unprepare(sii902x->audio.mclk); 693 dev_err(dev, "%s: hdmi audio enable failed: %d\n", __func__, 694 ret); 695 } 696 697 return ret; 698 } 699 700 static void sii902x_audio_shutdown(struct device *dev, void *data) 701 { 702 struct sii902x *sii902x = dev_get_drvdata(dev); 703 704 mutex_lock(&sii902x->mutex); 705 706 regmap_write(sii902x->regmap, SII902X_TPI_AUDIO_CONFIG_BYTE2_REG, 707 SII902X_TPI_AUDIO_INTERFACE_DISABLE); 708 709 mutex_unlock(&sii902x->mutex); 710 711 clk_disable_unprepare(sii902x->audio.mclk); 712 } 713 714 static int sii902x_audio_mute(struct device *dev, void *data, 715 bool enable, int direction) 716 { 717 struct sii902x *sii902x = dev_get_drvdata(dev); 718 719 mutex_lock(&sii902x->mutex); 720 721 sii902x_mute(sii902x, enable); 722 723 mutex_unlock(&sii902x->mutex); 724 725 return 0; 726 } 727 728 static int sii902x_audio_get_eld(struct device *dev, void *data, 729 uint8_t *buf, size_t len) 730 { 731 struct sii902x *sii902x = dev_get_drvdata(dev); 732 733 mutex_lock(&sii902x->mutex); 734 735 memcpy(buf, sii902x->connector.eld, 736 min(sizeof(sii902x->connector.eld), len)); 737 738 mutex_unlock(&sii902x->mutex); 739 740 return 0; 741 } 742 743 static int sii902x_audio_get_dai_id(struct snd_soc_component *component, 744 struct device_node *endpoint) 745 { 746 struct of_endpoint of_ep; 747 int ret; 748 749 ret = of_graph_parse_endpoint(endpoint, &of_ep); 750 if (ret < 0) 751 return ret; 752 753 /* 754 * HDMI sound should be located at reg = <3> 755 * Return expected DAI index 0. 756 */ 757 if (of_ep.port == SII902X_AUDIO_PORT_INDEX) 758 return 0; 759 760 return -EINVAL; 761 } 762 763 static const struct hdmi_codec_ops sii902x_audio_codec_ops = { 764 .hw_params = sii902x_audio_hw_params, 765 .audio_shutdown = sii902x_audio_shutdown, 766 .mute_stream = sii902x_audio_mute, 767 .get_eld = sii902x_audio_get_eld, 768 .get_dai_id = sii902x_audio_get_dai_id, 769 .no_capture_mute = 1, 770 }; 771 772 static int sii902x_audio_codec_init(struct sii902x *sii902x, 773 struct device *dev) 774 { 775 static const u8 audio_fifo_id[] = { 776 SII902X_TPI_I2S_CONFIG_FIFO0, 777 SII902X_TPI_I2S_CONFIG_FIFO1, 778 SII902X_TPI_I2S_CONFIG_FIFO2, 779 SII902X_TPI_I2S_CONFIG_FIFO3, 780 }; 781 static const u8 i2s_lane_id[] = { 782 SII902X_TPI_I2S_SELECT_SD0, 783 SII902X_TPI_I2S_SELECT_SD1, 784 SII902X_TPI_I2S_SELECT_SD2, 785 SII902X_TPI_I2S_SELECT_SD3, 786 }; 787 struct hdmi_codec_pdata codec_data = { 788 .ops = &sii902x_audio_codec_ops, 789 .i2s = 1, /* Only i2s support for now. */ 790 .spdif = 0, 791 .max_i2s_channels = 0, 792 }; 793 u8 lanes[4]; 794 int num_lanes, i; 795 796 if (!of_property_read_bool(dev->of_node, "#sound-dai-cells")) { 797 dev_dbg(dev, "%s: No \"#sound-dai-cells\", no audio\n", 798 __func__); 799 return 0; 800 } 801 802 num_lanes = of_property_read_variable_u8_array(dev->of_node, 803 "sil,i2s-data-lanes", 804 lanes, 1, 805 ARRAY_SIZE(lanes)); 806 807 if (num_lanes == -EINVAL) { 808 dev_dbg(dev, 809 "%s: No \"sil,i2s-data-lanes\", use default <0>\n", 810 __func__); 811 num_lanes = 1; 812 lanes[0] = 0; 813 } else if (num_lanes < 0) { 814 dev_err(dev, 815 "%s: Error gettin \"sil,i2s-data-lanes\": %d\n", 816 __func__, num_lanes); 817 return num_lanes; 818 } 819 codec_data.max_i2s_channels = 2 * num_lanes; 820 821 for (i = 0; i < num_lanes; i++) 822 sii902x->audio.i2s_fifo_sequence[i] |= audio_fifo_id[i] | 823 i2s_lane_id[lanes[i]] | SII902X_TPI_I2S_FIFO_ENABLE; 824 825 sii902x->audio.mclk = devm_clk_get_optional(dev, "mclk"); 826 if (IS_ERR(sii902x->audio.mclk)) { 827 dev_err(dev, "%s: No clock (audio mclk) found: %ld\n", 828 __func__, PTR_ERR(sii902x->audio.mclk)); 829 return PTR_ERR(sii902x->audio.mclk); 830 } 831 832 sii902x->audio.pdev = platform_device_register_data( 833 dev, HDMI_CODEC_DRV_NAME, PLATFORM_DEVID_AUTO, 834 &codec_data, sizeof(codec_data)); 835 836 return PTR_ERR_OR_ZERO(sii902x->audio.pdev); 837 } 838 839 static const struct regmap_range sii902x_volatile_ranges[] = { 840 { .range_min = 0, .range_max = 0xff }, 841 }; 842 843 static const struct regmap_access_table sii902x_volatile_table = { 844 .yes_ranges = sii902x_volatile_ranges, 845 .n_yes_ranges = ARRAY_SIZE(sii902x_volatile_ranges), 846 }; 847 848 static const struct regmap_config sii902x_regmap_config = { 849 .reg_bits = 8, 850 .val_bits = 8, 851 .disable_locking = true, /* struct sii902x mutex should be enough */ 852 .max_register = SII902X_TPI_MISC_INFOFRAME_END, 853 .volatile_table = &sii902x_volatile_table, 854 .cache_type = REGCACHE_NONE, 855 }; 856 857 static irqreturn_t sii902x_interrupt(int irq, void *data) 858 { 859 struct sii902x *sii902x = data; 860 unsigned int status = 0; 861 862 mutex_lock(&sii902x->mutex); 863 864 regmap_read(sii902x->regmap, SII902X_INT_STATUS, &status); 865 regmap_write(sii902x->regmap, SII902X_INT_STATUS, status); 866 867 mutex_unlock(&sii902x->mutex); 868 869 if ((status & SII902X_HOTPLUG_EVENT) && sii902x->bridge.dev) { 870 drm_helper_hpd_irq_event(sii902x->bridge.dev); 871 drm_bridge_hpd_notify(&sii902x->bridge, (status & SII902X_PLUGGED_STATUS) 872 ? connector_status_connected 873 : connector_status_disconnected); 874 } 875 876 return IRQ_HANDLED; 877 } 878 879 /* 880 * The purpose of sii902x_i2c_bypass_select is to enable the pass through 881 * mode of the HDMI transmitter. Do not use regmap from within this function, 882 * only use sii902x_*_unlocked functions to read/modify/write registers. 883 * We are holding the parent adapter lock here, keep this in mind before 884 * adding more i2c transactions. 885 * 886 * Also, since SII902X_SYS_CTRL_DATA is used with regmap_update_bits elsewhere 887 * in this driver, we need to make sure that we only touch 0x1A[2:1] from 888 * within sii902x_i2c_bypass_select and sii902x_i2c_bypass_deselect, and that 889 * we leave the remaining bits as we have found them. 890 */ 891 static int sii902x_i2c_bypass_select(struct i2c_mux_core *mux, u32 chan_id) 892 { 893 struct sii902x *sii902x = i2c_mux_priv(mux); 894 struct device *dev = &sii902x->i2c->dev; 895 unsigned long timeout; 896 u8 status; 897 int ret; 898 899 ret = sii902x_update_bits_unlocked(sii902x->i2c, SII902X_SYS_CTRL_DATA, 900 SII902X_SYS_CTRL_DDC_BUS_REQ, 901 SII902X_SYS_CTRL_DDC_BUS_REQ); 902 if (ret) 903 return ret; 904 905 timeout = jiffies + 906 msecs_to_jiffies(SII902X_I2C_BUS_ACQUISITION_TIMEOUT_MS); 907 do { 908 ret = sii902x_read_unlocked(sii902x->i2c, SII902X_SYS_CTRL_DATA, 909 &status); 910 if (ret) 911 return ret; 912 } while (!(status & SII902X_SYS_CTRL_DDC_BUS_GRTD) && 913 time_before(jiffies, timeout)); 914 915 if (!(status & SII902X_SYS_CTRL_DDC_BUS_GRTD)) { 916 dev_err(dev, "Failed to acquire the i2c bus\n"); 917 return -ETIMEDOUT; 918 } 919 920 return sii902x_write_unlocked(sii902x->i2c, SII902X_SYS_CTRL_DATA, 921 status); 922 } 923 924 /* 925 * The purpose of sii902x_i2c_bypass_deselect is to disable the pass through 926 * mode of the HDMI transmitter. Do not use regmap from within this function, 927 * only use sii902x_*_unlocked functions to read/modify/write registers. 928 * We are holding the parent adapter lock here, keep this in mind before 929 * adding more i2c transactions. 930 * 931 * Also, since SII902X_SYS_CTRL_DATA is used with regmap_update_bits elsewhere 932 * in this driver, we need to make sure that we only touch 0x1A[2:1] from 933 * within sii902x_i2c_bypass_select and sii902x_i2c_bypass_deselect, and that 934 * we leave the remaining bits as we have found them. 935 */ 936 static int sii902x_i2c_bypass_deselect(struct i2c_mux_core *mux, u32 chan_id) 937 { 938 struct sii902x *sii902x = i2c_mux_priv(mux); 939 struct device *dev = &sii902x->i2c->dev; 940 unsigned long timeout; 941 unsigned int retries; 942 u8 status; 943 int ret; 944 945 /* 946 * When the HDMI transmitter is in pass through mode, we need an 947 * (undocumented) additional delay between STOP and START conditions 948 * to guarantee the bus won't get stuck. 949 */ 950 udelay(30); 951 952 /* 953 * Sometimes the I2C bus can stall after failure to use the 954 * EDID channel. Retry a few times to see if things clear 955 * up, else continue anyway. 956 */ 957 retries = 5; 958 do { 959 ret = sii902x_read_unlocked(sii902x->i2c, SII902X_SYS_CTRL_DATA, 960 &status); 961 retries--; 962 } while (ret && retries); 963 if (ret) { 964 dev_err(dev, "failed to read status (%d)\n", ret); 965 return ret; 966 } 967 968 ret = sii902x_update_bits_unlocked(sii902x->i2c, SII902X_SYS_CTRL_DATA, 969 SII902X_SYS_CTRL_DDC_BUS_REQ | 970 SII902X_SYS_CTRL_DDC_BUS_GRTD, 0); 971 if (ret) 972 return ret; 973 974 timeout = jiffies + 975 msecs_to_jiffies(SII902X_I2C_BUS_ACQUISITION_TIMEOUT_MS); 976 do { 977 ret = sii902x_read_unlocked(sii902x->i2c, SII902X_SYS_CTRL_DATA, 978 &status); 979 if (ret) 980 return ret; 981 } while (status & (SII902X_SYS_CTRL_DDC_BUS_REQ | 982 SII902X_SYS_CTRL_DDC_BUS_GRTD) && 983 time_before(jiffies, timeout)); 984 985 if (status & (SII902X_SYS_CTRL_DDC_BUS_REQ | 986 SII902X_SYS_CTRL_DDC_BUS_GRTD)) { 987 dev_err(dev, "failed to release the i2c bus\n"); 988 return -ETIMEDOUT; 989 } 990 991 return 0; 992 } 993 994 static const struct drm_bridge_timings default_sii902x_timings = { 995 .input_bus_flags = DRM_BUS_FLAG_PIXDATA_SAMPLE_NEGEDGE 996 | DRM_BUS_FLAG_SYNC_SAMPLE_NEGEDGE 997 | DRM_BUS_FLAG_DE_HIGH, 998 }; 999 1000 static int sii902x_init(struct sii902x *sii902x) 1001 { 1002 struct device *dev = &sii902x->i2c->dev; 1003 unsigned int status = 0; 1004 u8 chipid[4]; 1005 int ret; 1006 1007 sii902x_reset(sii902x); 1008 1009 ret = regmap_write(sii902x->regmap, SII902X_REG_TPI_RQB, 0x0); 1010 if (ret) 1011 return ret; 1012 1013 ret = regmap_bulk_read(sii902x->regmap, SII902X_REG_CHIPID(0), 1014 &chipid, 4); 1015 if (ret) { 1016 dev_err(dev, "regmap_read failed %d\n", ret); 1017 return ret; 1018 } 1019 1020 if (chipid[0] != 0xb0) { 1021 dev_err(dev, "Invalid chipid: %02x (expecting 0xb0)\n", 1022 chipid[0]); 1023 return -EINVAL; 1024 } 1025 1026 /* Clear all pending interrupts */ 1027 regmap_read(sii902x->regmap, SII902X_INT_STATUS, &status); 1028 regmap_write(sii902x->regmap, SII902X_INT_STATUS, status); 1029 1030 if (sii902x->i2c->irq > 0) { 1031 regmap_write(sii902x->regmap, SII902X_INT_ENABLE, 1032 SII902X_HOTPLUG_EVENT); 1033 1034 ret = devm_request_threaded_irq(dev, sii902x->i2c->irq, NULL, 1035 sii902x_interrupt, 1036 IRQF_ONESHOT, dev_name(dev), 1037 sii902x); 1038 if (ret) 1039 return ret; 1040 } 1041 1042 sii902x->bridge.funcs = &sii902x_bridge_funcs; 1043 sii902x->bridge.of_node = dev->of_node; 1044 sii902x->bridge.timings = &default_sii902x_timings; 1045 sii902x->bridge.ops = DRM_BRIDGE_OP_DETECT | DRM_BRIDGE_OP_EDID; 1046 1047 if (sii902x->i2c->irq > 0) 1048 sii902x->bridge.ops |= DRM_BRIDGE_OP_HPD; 1049 1050 drm_bridge_add(&sii902x->bridge); 1051 1052 sii902x_audio_codec_init(sii902x, dev); 1053 1054 i2c_set_clientdata(sii902x->i2c, sii902x); 1055 1056 sii902x->i2cmux = i2c_mux_alloc(sii902x->i2c->adapter, dev, 1057 1, 0, I2C_MUX_GATE, 1058 sii902x_i2c_bypass_select, 1059 sii902x_i2c_bypass_deselect); 1060 if (!sii902x->i2cmux) 1061 return -ENOMEM; 1062 1063 sii902x->i2cmux->priv = sii902x; 1064 return i2c_mux_add_adapter(sii902x->i2cmux, 0, 0, 0); 1065 } 1066 1067 static int sii902x_probe(struct i2c_client *client, 1068 const struct i2c_device_id *id) 1069 { 1070 struct device *dev = &client->dev; 1071 struct device_node *endpoint; 1072 struct sii902x *sii902x; 1073 int ret; 1074 1075 ret = i2c_check_functionality(client->adapter, 1076 I2C_FUNC_SMBUS_BYTE_DATA); 1077 if (!ret) { 1078 dev_err(dev, "I2C adapter not suitable\n"); 1079 return -EIO; 1080 } 1081 1082 sii902x = devm_kzalloc(dev, sizeof(*sii902x), GFP_KERNEL); 1083 if (!sii902x) 1084 return -ENOMEM; 1085 1086 sii902x->i2c = client; 1087 sii902x->regmap = devm_regmap_init_i2c(client, &sii902x_regmap_config); 1088 if (IS_ERR(sii902x->regmap)) 1089 return PTR_ERR(sii902x->regmap); 1090 1091 sii902x->reset_gpio = devm_gpiod_get_optional(dev, "reset", 1092 GPIOD_OUT_LOW); 1093 if (IS_ERR(sii902x->reset_gpio)) { 1094 dev_err(dev, "Failed to retrieve/request reset gpio: %ld\n", 1095 PTR_ERR(sii902x->reset_gpio)); 1096 return PTR_ERR(sii902x->reset_gpio); 1097 } 1098 1099 endpoint = of_graph_get_endpoint_by_regs(dev->of_node, 1, -1); 1100 if (endpoint) { 1101 struct device_node *remote = of_graph_get_remote_port_parent(endpoint); 1102 1103 of_node_put(endpoint); 1104 if (!remote) { 1105 dev_err(dev, "Endpoint in port@1 unconnected\n"); 1106 return -ENODEV; 1107 } 1108 1109 if (!of_device_is_available(remote)) { 1110 dev_err(dev, "port@1 remote device is disabled\n"); 1111 of_node_put(remote); 1112 return -ENODEV; 1113 } 1114 1115 sii902x->next_bridge = of_drm_find_bridge(remote); 1116 of_node_put(remote); 1117 if (!sii902x->next_bridge) 1118 return -EPROBE_DEFER; 1119 } 1120 1121 mutex_init(&sii902x->mutex); 1122 1123 sii902x->supplies[0].supply = "iovcc"; 1124 sii902x->supplies[1].supply = "cvcc12"; 1125 ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(sii902x->supplies), 1126 sii902x->supplies); 1127 if (ret < 0) 1128 return ret; 1129 1130 ret = regulator_bulk_enable(ARRAY_SIZE(sii902x->supplies), 1131 sii902x->supplies); 1132 if (ret < 0) { 1133 dev_err_probe(dev, ret, "Failed to enable supplies"); 1134 return ret; 1135 } 1136 1137 ret = sii902x_init(sii902x); 1138 if (ret < 0) { 1139 regulator_bulk_disable(ARRAY_SIZE(sii902x->supplies), 1140 sii902x->supplies); 1141 } 1142 1143 return ret; 1144 } 1145 1146 static int sii902x_remove(struct i2c_client *client) 1147 1148 { 1149 struct sii902x *sii902x = i2c_get_clientdata(client); 1150 1151 i2c_mux_del_adapters(sii902x->i2cmux); 1152 drm_bridge_remove(&sii902x->bridge); 1153 regulator_bulk_disable(ARRAY_SIZE(sii902x->supplies), 1154 sii902x->supplies); 1155 1156 return 0; 1157 } 1158 1159 static const struct of_device_id sii902x_dt_ids[] = { 1160 { .compatible = "sil,sii9022", }, 1161 { } 1162 }; 1163 MODULE_DEVICE_TABLE(of, sii902x_dt_ids); 1164 1165 static const struct i2c_device_id sii902x_i2c_ids[] = { 1166 { "sii9022", 0 }, 1167 { }, 1168 }; 1169 MODULE_DEVICE_TABLE(i2c, sii902x_i2c_ids); 1170 1171 static struct i2c_driver sii902x_driver = { 1172 .probe = sii902x_probe, 1173 .remove = sii902x_remove, 1174 .driver = { 1175 .name = "sii902x", 1176 .of_match_table = sii902x_dt_ids, 1177 }, 1178 .id_table = sii902x_i2c_ids, 1179 }; 1180 module_i2c_driver(sii902x_driver); 1181 1182 MODULE_AUTHOR("Boris Brezillon <boris.brezillon@free-electrons.com>"); 1183 MODULE_DESCRIPTION("SII902x RGB -> HDMI bridges"); 1184 MODULE_LICENSE("GPL"); 1185