1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Driver for the Texas Instruments DS90UB953 video serializer 4 * 5 * Based on a driver from Luca Ceresoli <luca@lucaceresoli.net> 6 * 7 * Copyright (c) 2019 Luca Ceresoli <luca@lucaceresoli.net> 8 * Copyright (c) 2023 Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> 9 */ 10 11 #include <linux/clk-provider.h> 12 #include <linux/clk.h> 13 #include <linux/delay.h> 14 #include <linux/gpio/driver.h> 15 #include <linux/i2c-atr.h> 16 #include <linux/i2c.h> 17 #include <linux/kernel.h> 18 #include <linux/math64.h> 19 #include <linux/module.h> 20 #include <linux/property.h> 21 #include <linux/rational.h> 22 #include <linux/regmap.h> 23 24 #include <media/i2c/ds90ub9xx.h> 25 #include <media/v4l2-ctrls.h> 26 #include <media/v4l2-fwnode.h> 27 #include <media/v4l2-mediabus.h> 28 #include <media/v4l2-subdev.h> 29 30 #include "ds90ub953.h" 31 32 #define UB953_PAD_SINK 0 33 #define UB953_PAD_SOURCE 1 34 35 #define UB953_NUM_GPIOS 4 36 37 #define UB953_DEFAULT_CLKOUT_RATE 25000000UL 38 39 /* Note: Only sync mode supported for now */ 40 enum ub953_mode { 41 /* FPD-Link III CSI-2 synchronous mode */ 42 UB953_MODE_SYNC, 43 /* FPD-Link III CSI-2 non-synchronous mode, external ref clock */ 44 UB953_MODE_NONSYNC_EXT, 45 /* FPD-Link III CSI-2 non-synchronous mode, internal ref clock */ 46 UB953_MODE_NONSYNC_INT, 47 /* FPD-Link III DVP mode */ 48 UB953_MODE_DVP, 49 }; 50 51 struct ub953_hw_data { 52 const char *model; 53 bool is_ub971; 54 }; 55 56 struct ub953_clkout_data { 57 u32 hs_div; 58 u32 m; 59 u32 n; 60 unsigned long rate; 61 }; 62 63 struct ub953_data { 64 const struct ub953_hw_data *hw_data; 65 66 struct i2c_client *client; 67 struct regmap *regmap; 68 struct clk *clkin; 69 70 u32 num_data_lanes; 71 bool non_continous_clk; 72 73 struct gpio_chip gpio_chip; 74 75 struct v4l2_subdev sd; 76 struct media_pad pads[2]; 77 78 struct v4l2_async_notifier notifier; 79 80 struct v4l2_subdev *source_sd; 81 u16 source_sd_pad; 82 83 u64 enabled_source_streams; 84 85 /* lock for register access */ 86 struct mutex reg_lock; 87 88 u8 current_indirect_target; 89 90 struct clk_hw clkout_clk_hw; 91 92 enum ub953_mode mode; 93 94 const struct ds90ub9xx_platform_data *plat_data; 95 }; 96 97 static inline struct ub953_data *sd_to_ub953(struct v4l2_subdev *sd) 98 { 99 return container_of(sd, struct ub953_data, sd); 100 } 101 102 /* 103 * HW Access 104 */ 105 106 static int ub953_read(struct ub953_data *priv, u8 reg, u8 *val, int *err) 107 { 108 unsigned int v; 109 int ret; 110 111 if (err && *err) 112 return *err; 113 114 mutex_lock(&priv->reg_lock); 115 116 ret = regmap_read(priv->regmap, reg, &v); 117 if (ret) { 118 dev_err(&priv->client->dev, "Cannot read register 0x%02x: %d\n", 119 reg, ret); 120 goto out_unlock; 121 } 122 123 *val = v; 124 125 out_unlock: 126 mutex_unlock(&priv->reg_lock); 127 128 if (ret && err) 129 *err = ret; 130 131 return ret; 132 } 133 134 static int ub953_write(struct ub953_data *priv, u8 reg, u8 val, int *err) 135 { 136 int ret; 137 138 if (err && *err) 139 return *err; 140 141 mutex_lock(&priv->reg_lock); 142 143 ret = regmap_write(priv->regmap, reg, val); 144 if (ret) 145 dev_err(&priv->client->dev, 146 "Cannot write register 0x%02x: %d\n", reg, ret); 147 148 mutex_unlock(&priv->reg_lock); 149 150 if (ret && err) 151 *err = ret; 152 153 return ret; 154 } 155 156 static int ub953_select_ind_reg_block(struct ub953_data *priv, u8 block) 157 { 158 struct device *dev = &priv->client->dev; 159 int ret; 160 161 if (priv->current_indirect_target == block) 162 return 0; 163 164 ret = regmap_write(priv->regmap, UB953_REG_IND_ACC_CTL, block << 2); 165 if (ret) { 166 dev_err(dev, "%s: cannot select indirect target %u (%d)\n", 167 __func__, block, ret); 168 return ret; 169 } 170 171 priv->current_indirect_target = block; 172 173 return 0; 174 } 175 176 __maybe_unused 177 static int ub953_read_ind(struct ub953_data *priv, u8 block, u8 reg, u8 *val, 178 int *err) 179 { 180 unsigned int v; 181 int ret; 182 183 if (err && *err) 184 return *err; 185 186 mutex_lock(&priv->reg_lock); 187 188 ret = ub953_select_ind_reg_block(priv, block); 189 if (ret) 190 goto out_unlock; 191 192 ret = regmap_write(priv->regmap, UB953_REG_IND_ACC_ADDR, reg); 193 if (ret) { 194 dev_err(&priv->client->dev, 195 "Write to IND_ACC_ADDR failed when reading %u:0x%02x: %d\n", 196 block, reg, ret); 197 goto out_unlock; 198 } 199 200 ret = regmap_read(priv->regmap, UB953_REG_IND_ACC_DATA, &v); 201 if (ret) { 202 dev_err(&priv->client->dev, 203 "Write to IND_ACC_DATA failed when reading %u:0x%02x: %d\n", 204 block, reg, ret); 205 goto out_unlock; 206 } 207 208 *val = v; 209 210 out_unlock: 211 mutex_unlock(&priv->reg_lock); 212 213 if (ret && err) 214 *err = ret; 215 216 return ret; 217 } 218 219 __maybe_unused 220 static int ub953_write_ind(struct ub953_data *priv, u8 block, u8 reg, u8 val, 221 int *err) 222 { 223 int ret; 224 225 if (err && *err) 226 return *err; 227 228 mutex_lock(&priv->reg_lock); 229 230 ret = ub953_select_ind_reg_block(priv, block); 231 if (ret) 232 goto out_unlock; 233 234 ret = regmap_write(priv->regmap, UB953_REG_IND_ACC_ADDR, reg); 235 if (ret) { 236 dev_err(&priv->client->dev, 237 "Write to IND_ACC_ADDR failed when writing %u:0x%02x: %d\n", 238 block, reg, ret); 239 goto out_unlock; 240 } 241 242 ret = regmap_write(priv->regmap, UB953_REG_IND_ACC_DATA, val); 243 if (ret) { 244 dev_err(&priv->client->dev, 245 "Write to IND_ACC_DATA failed when writing %u:0x%02x: %d\n", 246 block, reg, ret); 247 } 248 249 out_unlock: 250 mutex_unlock(&priv->reg_lock); 251 252 if (ret && err) 253 *err = ret; 254 255 return ret; 256 } 257 258 /* 259 * GPIO chip 260 */ 261 static int ub953_gpio_get_direction(struct gpio_chip *gc, unsigned int offset) 262 { 263 struct ub953_data *priv = gpiochip_get_data(gc); 264 int ret; 265 u8 v; 266 267 ret = ub953_read(priv, UB953_REG_GPIO_INPUT_CTRL, &v, NULL); 268 if (ret) 269 return ret; 270 271 if (v & UB953_REG_GPIO_INPUT_CTRL_INPUT_EN(offset)) 272 return GPIO_LINE_DIRECTION_IN; 273 else 274 return GPIO_LINE_DIRECTION_OUT; 275 } 276 277 static int ub953_gpio_direction_in(struct gpio_chip *gc, unsigned int offset) 278 { 279 struct ub953_data *priv = gpiochip_get_data(gc); 280 281 return regmap_update_bits(priv->regmap, UB953_REG_GPIO_INPUT_CTRL, 282 UB953_REG_GPIO_INPUT_CTRL_INPUT_EN(offset) | 283 UB953_REG_GPIO_INPUT_CTRL_OUT_EN(offset), 284 UB953_REG_GPIO_INPUT_CTRL_INPUT_EN(offset)); 285 } 286 287 static int ub953_gpio_direction_out(struct gpio_chip *gc, unsigned int offset, 288 int value) 289 { 290 struct ub953_data *priv = gpiochip_get_data(gc); 291 int ret; 292 293 ret = regmap_update_bits(priv->regmap, UB953_REG_LOCAL_GPIO_DATA, 294 UB953_REG_LOCAL_GPIO_DATA_GPIO_OUT_SRC(offset), 295 value ? UB953_REG_LOCAL_GPIO_DATA_GPIO_OUT_SRC(offset) : 296 0); 297 298 if (ret) 299 return ret; 300 301 return regmap_update_bits(priv->regmap, UB953_REG_GPIO_INPUT_CTRL, 302 UB953_REG_GPIO_INPUT_CTRL_INPUT_EN(offset) | 303 UB953_REG_GPIO_INPUT_CTRL_OUT_EN(offset), 304 UB953_REG_GPIO_INPUT_CTRL_OUT_EN(offset)); 305 } 306 307 static int ub953_gpio_get(struct gpio_chip *gc, unsigned int offset) 308 { 309 struct ub953_data *priv = gpiochip_get_data(gc); 310 int ret; 311 u8 v; 312 313 ret = ub953_read(priv, UB953_REG_GPIO_PIN_STS, &v, NULL); 314 if (ret) 315 return ret; 316 317 return !!(v & UB953_REG_GPIO_PIN_STS_GPIO_STS(offset)); 318 } 319 320 static int ub953_gpio_set(struct gpio_chip *gc, unsigned int offset, int value) 321 { 322 struct ub953_data *priv = gpiochip_get_data(gc); 323 324 return regmap_update_bits(priv->regmap, UB953_REG_LOCAL_GPIO_DATA, 325 UB953_REG_LOCAL_GPIO_DATA_GPIO_OUT_SRC(offset), 326 value ? UB953_REG_LOCAL_GPIO_DATA_GPIO_OUT_SRC(offset) : 0); 327 } 328 329 static int ub953_gpio_of_xlate(struct gpio_chip *gc, 330 const struct of_phandle_args *gpiospec, 331 u32 *flags) 332 { 333 if (flags) 334 *flags = gpiospec->args[1]; 335 336 return gpiospec->args[0]; 337 } 338 339 static int ub953_gpiochip_probe(struct ub953_data *priv) 340 { 341 struct device *dev = &priv->client->dev; 342 struct gpio_chip *gc = &priv->gpio_chip; 343 int ret; 344 345 /* Set all GPIOs to local input mode */ 346 ret = ub953_write(priv, UB953_REG_LOCAL_GPIO_DATA, 0, NULL); 347 if (ret) 348 return ret; 349 350 ret = ub953_write(priv, UB953_REG_GPIO_INPUT_CTRL, 0xf, NULL); 351 if (ret) 352 return ret; 353 354 gc->label = dev_name(dev); 355 gc->parent = dev; 356 gc->owner = THIS_MODULE; 357 gc->base = -1; 358 gc->can_sleep = true; 359 gc->ngpio = UB953_NUM_GPIOS; 360 gc->get_direction = ub953_gpio_get_direction; 361 gc->direction_input = ub953_gpio_direction_in; 362 gc->direction_output = ub953_gpio_direction_out; 363 gc->get = ub953_gpio_get; 364 gc->set = ub953_gpio_set; 365 gc->of_xlate = ub953_gpio_of_xlate; 366 gc->of_gpio_n_cells = 2; 367 368 ret = gpiochip_add_data(gc, priv); 369 if (ret) { 370 dev_err(dev, "Failed to add GPIOs: %d\n", ret); 371 return ret; 372 } 373 374 return 0; 375 } 376 377 static void ub953_gpiochip_remove(struct ub953_data *priv) 378 { 379 gpiochip_remove(&priv->gpio_chip); 380 } 381 382 /* 383 * V4L2 384 */ 385 386 static int _ub953_set_routing(struct v4l2_subdev *sd, 387 struct v4l2_subdev_state *state, 388 struct v4l2_subdev_krouting *routing) 389 { 390 static const struct v4l2_mbus_framefmt format = { 391 .width = 640, 392 .height = 480, 393 .code = MEDIA_BUS_FMT_UYVY8_1X16, 394 .field = V4L2_FIELD_NONE, 395 .colorspace = V4L2_COLORSPACE_SRGB, 396 .ycbcr_enc = V4L2_YCBCR_ENC_601, 397 .quantization = V4L2_QUANTIZATION_LIM_RANGE, 398 .xfer_func = V4L2_XFER_FUNC_SRGB, 399 }; 400 int ret; 401 402 ret = v4l2_subdev_routing_validate(sd, routing, 403 V4L2_SUBDEV_ROUTING_ONLY_1_TO_1); 404 if (ret) 405 return ret; 406 407 ret = v4l2_subdev_set_routing_with_fmt(sd, state, routing, &format); 408 if (ret) 409 return ret; 410 411 return 0; 412 } 413 414 static int ub953_set_routing(struct v4l2_subdev *sd, 415 struct v4l2_subdev_state *state, 416 enum v4l2_subdev_format_whence which, 417 struct v4l2_subdev_krouting *routing) 418 { 419 struct ub953_data *priv = sd_to_ub953(sd); 420 421 if (which == V4L2_SUBDEV_FORMAT_ACTIVE && priv->enabled_source_streams) 422 return -EBUSY; 423 424 return _ub953_set_routing(sd, state, routing); 425 } 426 427 static int ub953_get_frame_desc(struct v4l2_subdev *sd, unsigned int pad, 428 struct v4l2_mbus_frame_desc *fd) 429 { 430 struct ub953_data *priv = sd_to_ub953(sd); 431 struct v4l2_mbus_frame_desc source_fd; 432 struct v4l2_subdev_route *route; 433 struct v4l2_subdev_state *state; 434 int ret; 435 436 if (pad != UB953_PAD_SOURCE) 437 return -EINVAL; 438 439 ret = v4l2_subdev_call(priv->source_sd, pad, get_frame_desc, 440 priv->source_sd_pad, &source_fd); 441 if (ret) 442 return ret; 443 444 fd->type = V4L2_MBUS_FRAME_DESC_TYPE_CSI2; 445 446 state = v4l2_subdev_lock_and_get_active_state(sd); 447 448 for_each_active_route(&state->routing, route) { 449 struct v4l2_mbus_frame_desc_entry *source_entry = NULL; 450 unsigned int i; 451 452 if (route->source_pad != pad) 453 continue; 454 455 for (i = 0; i < source_fd.num_entries; i++) { 456 if (source_fd.entry[i].stream == route->sink_stream) { 457 source_entry = &source_fd.entry[i]; 458 break; 459 } 460 } 461 462 if (!source_entry) { 463 dev_err(&priv->client->dev, 464 "Failed to find stream from source frame desc\n"); 465 ret = -EPIPE; 466 goto out_unlock; 467 } 468 469 fd->entry[fd->num_entries].stream = route->source_stream; 470 fd->entry[fd->num_entries].flags = source_entry->flags; 471 fd->entry[fd->num_entries].length = source_entry->length; 472 fd->entry[fd->num_entries].pixelcode = source_entry->pixelcode; 473 fd->entry[fd->num_entries].bus.csi2.vc = 474 source_entry->bus.csi2.vc; 475 fd->entry[fd->num_entries].bus.csi2.dt = 476 source_entry->bus.csi2.dt; 477 478 fd->num_entries++; 479 } 480 481 out_unlock: 482 v4l2_subdev_unlock_state(state); 483 484 return ret; 485 } 486 487 static int ub953_set_fmt(struct v4l2_subdev *sd, 488 struct v4l2_subdev_state *state, 489 struct v4l2_subdev_format *format) 490 { 491 struct ub953_data *priv = sd_to_ub953(sd); 492 struct v4l2_mbus_framefmt *fmt; 493 494 if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE && 495 priv->enabled_source_streams) 496 return -EBUSY; 497 498 /* No transcoding, source and sink formats must match. */ 499 if (format->pad == UB953_PAD_SOURCE) 500 return v4l2_subdev_get_fmt(sd, state, format); 501 502 /* Set sink format */ 503 fmt = v4l2_subdev_state_get_format(state, format->pad, format->stream); 504 if (!fmt) 505 return -EINVAL; 506 507 *fmt = format->format; 508 509 /* Propagate to source format */ 510 fmt = v4l2_subdev_state_get_opposite_stream_format(state, format->pad, 511 format->stream); 512 if (!fmt) 513 return -EINVAL; 514 515 *fmt = format->format; 516 517 return 0; 518 } 519 520 static int ub953_init_state(struct v4l2_subdev *sd, 521 struct v4l2_subdev_state *state) 522 { 523 struct v4l2_subdev_route routes[] = { 524 { 525 .sink_pad = UB953_PAD_SINK, 526 .sink_stream = 0, 527 .source_pad = UB953_PAD_SOURCE, 528 .source_stream = 0, 529 .flags = V4L2_SUBDEV_ROUTE_FL_ACTIVE, 530 }, 531 }; 532 533 struct v4l2_subdev_krouting routing = { 534 .num_routes = ARRAY_SIZE(routes), 535 .routes = routes, 536 }; 537 538 return _ub953_set_routing(sd, state, &routing); 539 } 540 541 static int ub953_log_status(struct v4l2_subdev *sd) 542 { 543 struct ub953_data *priv = sd_to_ub953(sd); 544 struct device *dev = &priv->client->dev; 545 char id[UB953_REG_FPD3_RX_ID_LEN]; 546 u8 gpio_local_data; 547 u8 gpio_input_ctrl; 548 u8 gpio_pin_sts; 549 unsigned int i; 550 u8 v, v1, v2; 551 int ret; 552 553 for (i = 0; i < sizeof(id); i++) { 554 ret = ub953_read(priv, UB953_REG_FPD3_RX_ID(i), &id[i], NULL); 555 if (ret) 556 return ret; 557 } 558 559 dev_info(dev, "ID '%.*s'\n", (int)sizeof(id), id); 560 561 ret = ub953_read(priv, UB953_REG_GENERAL_STATUS, &v, NULL); 562 if (ret) 563 return ret; 564 565 dev_info(dev, "GENERAL_STATUS %#02x\n", v); 566 567 ub953_read(priv, UB953_REG_CRC_ERR_CNT1, &v1, &ret); 568 ub953_read(priv, UB953_REG_CRC_ERR_CNT2, &v2, &ret); 569 if (ret) 570 return ret; 571 572 dev_info(dev, "CRC error count %u\n", v1 | (v2 << 8)); 573 574 /* Clear CRC error counter */ 575 if (v1 || v2) 576 regmap_update_bits(priv->regmap, UB953_REG_BC_CTRL, 577 UB953_REG_BC_CTRL_CRC_ERR_CLR, 578 UB953_REG_BC_CTRL_CRC_ERR_CLR); 579 580 ret = ub953_read(priv, UB953_REG_CSI_ERR_CNT, &v, NULL); 581 if (ret) 582 return ret; 583 584 dev_info(dev, "CSI error count %u\n", v); 585 586 ret = ub953_read(priv, UB953_REG_CSI_ERR_STATUS, &v, NULL); 587 if (ret) 588 return ret; 589 590 dev_info(dev, "CSI_ERR_STATUS %#02x\n", v); 591 592 ret = ub953_read(priv, UB953_REG_CSI_ERR_DLANE01, &v, NULL); 593 if (ret) 594 return ret; 595 596 dev_info(dev, "CSI_ERR_DLANE01 %#02x\n", v); 597 598 ret = ub953_read(priv, UB953_REG_CSI_ERR_DLANE23, &v, NULL); 599 if (ret) 600 return ret; 601 602 dev_info(dev, "CSI_ERR_DLANE23 %#02x\n", v); 603 604 ret = ub953_read(priv, UB953_REG_CSI_ERR_CLK_LANE, &v, NULL); 605 if (ret) 606 return ret; 607 608 dev_info(dev, "CSI_ERR_CLK_LANE %#02x\n", v); 609 610 ret = ub953_read(priv, UB953_REG_CSI_PKT_HDR_VC_ID, &v, NULL); 611 if (ret) 612 return ret; 613 614 dev_info(dev, "CSI packet header VC %u ID %u\n", v >> 6, v & 0x3f); 615 616 ub953_read(priv, UB953_REG_PKT_HDR_WC_LSB, &v1, &ret); 617 ub953_read(priv, UB953_REG_PKT_HDR_WC_MSB, &v2, &ret); 618 if (ret) 619 return ret; 620 621 dev_info(dev, "CSI packet header WC %u\n", (v2 << 8) | v1); 622 623 ret = ub953_read(priv, UB953_REG_CSI_ECC, &v, NULL); 624 if (ret) 625 return ret; 626 627 dev_info(dev, "CSI ECC %#02x\n", v); 628 629 ub953_read(priv, UB953_REG_LOCAL_GPIO_DATA, &gpio_local_data, &ret); 630 ub953_read(priv, UB953_REG_GPIO_INPUT_CTRL, &gpio_input_ctrl, &ret); 631 ub953_read(priv, UB953_REG_GPIO_PIN_STS, &gpio_pin_sts, &ret); 632 if (ret) 633 return ret; 634 635 for (i = 0; i < UB953_NUM_GPIOS; i++) { 636 dev_info(dev, 637 "GPIO%u: remote: %u is_input: %u is_output: %u val: %u sts: %u\n", 638 i, 639 !!(gpio_local_data & UB953_REG_LOCAL_GPIO_DATA_GPIO_RMTEN(i)), 640 !!(gpio_input_ctrl & UB953_REG_GPIO_INPUT_CTRL_INPUT_EN(i)), 641 !!(gpio_input_ctrl & UB953_REG_GPIO_INPUT_CTRL_OUT_EN(i)), 642 !!(gpio_local_data & UB953_REG_LOCAL_GPIO_DATA_GPIO_OUT_SRC(i)), 643 !!(gpio_pin_sts & UB953_REG_GPIO_PIN_STS_GPIO_STS(i))); 644 } 645 646 return 0; 647 } 648 649 static int ub953_enable_streams(struct v4l2_subdev *sd, 650 struct v4l2_subdev_state *state, u32 pad, 651 u64 streams_mask) 652 { 653 struct ub953_data *priv = sd_to_ub953(sd); 654 u64 sink_streams; 655 int ret; 656 657 sink_streams = v4l2_subdev_state_xlate_streams(state, UB953_PAD_SOURCE, 658 UB953_PAD_SINK, 659 &streams_mask); 660 661 ret = v4l2_subdev_enable_streams(priv->source_sd, priv->source_sd_pad, 662 sink_streams); 663 if (ret) 664 return ret; 665 666 priv->enabled_source_streams |= streams_mask; 667 668 return 0; 669 } 670 671 static int ub953_disable_streams(struct v4l2_subdev *sd, 672 struct v4l2_subdev_state *state, u32 pad, 673 u64 streams_mask) 674 { 675 struct ub953_data *priv = sd_to_ub953(sd); 676 u64 sink_streams; 677 int ret; 678 679 sink_streams = v4l2_subdev_state_xlate_streams(state, UB953_PAD_SOURCE, 680 UB953_PAD_SINK, 681 &streams_mask); 682 683 ret = v4l2_subdev_disable_streams(priv->source_sd, priv->source_sd_pad, 684 sink_streams); 685 if (ret) 686 return ret; 687 688 priv->enabled_source_streams &= ~streams_mask; 689 690 return 0; 691 } 692 693 static const struct v4l2_subdev_pad_ops ub953_pad_ops = { 694 .enable_streams = ub953_enable_streams, 695 .disable_streams = ub953_disable_streams, 696 .set_routing = ub953_set_routing, 697 .get_frame_desc = ub953_get_frame_desc, 698 .get_fmt = v4l2_subdev_get_fmt, 699 .set_fmt = ub953_set_fmt, 700 }; 701 702 static const struct v4l2_subdev_core_ops ub953_subdev_core_ops = { 703 .log_status = ub953_log_status, 704 }; 705 706 static const struct v4l2_subdev_ops ub953_subdev_ops = { 707 .core = &ub953_subdev_core_ops, 708 .pad = &ub953_pad_ops, 709 }; 710 711 static const struct v4l2_subdev_internal_ops ub953_internal_ops = { 712 .init_state = ub953_init_state, 713 }; 714 715 static const struct media_entity_operations ub953_entity_ops = { 716 .link_validate = v4l2_subdev_link_validate, 717 }; 718 719 static int ub953_notify_bound(struct v4l2_async_notifier *notifier, 720 struct v4l2_subdev *source_subdev, 721 struct v4l2_async_connection *asd) 722 { 723 struct ub953_data *priv = sd_to_ub953(notifier->sd); 724 struct device *dev = &priv->client->dev; 725 int ret; 726 727 ret = media_entity_get_fwnode_pad(&source_subdev->entity, 728 source_subdev->fwnode, 729 MEDIA_PAD_FL_SOURCE); 730 if (ret < 0) { 731 dev_err(dev, "Failed to find pad for %s\n", 732 source_subdev->name); 733 return ret; 734 } 735 736 priv->source_sd = source_subdev; 737 priv->source_sd_pad = ret; 738 739 ret = media_create_pad_link(&source_subdev->entity, priv->source_sd_pad, 740 &priv->sd.entity, 0, 741 MEDIA_LNK_FL_ENABLED | 742 MEDIA_LNK_FL_IMMUTABLE); 743 if (ret) { 744 dev_err(dev, "Unable to link %s:%u -> %s:0\n", 745 source_subdev->name, priv->source_sd_pad, 746 priv->sd.name); 747 return ret; 748 } 749 750 return 0; 751 } 752 753 static const struct v4l2_async_notifier_operations ub953_notify_ops = { 754 .bound = ub953_notify_bound, 755 }; 756 757 static int ub953_v4l2_notifier_register(struct ub953_data *priv) 758 { 759 struct device *dev = &priv->client->dev; 760 struct v4l2_async_connection *asd; 761 struct fwnode_handle *ep_fwnode; 762 int ret; 763 764 ep_fwnode = fwnode_graph_get_endpoint_by_id(dev_fwnode(dev), 765 UB953_PAD_SINK, 0, 0); 766 if (!ep_fwnode) { 767 dev_err(dev, "No graph endpoint\n"); 768 return -ENODEV; 769 } 770 771 v4l2_async_subdev_nf_init(&priv->notifier, &priv->sd); 772 773 asd = v4l2_async_nf_add_fwnode_remote(&priv->notifier, ep_fwnode, 774 struct v4l2_async_connection); 775 776 fwnode_handle_put(ep_fwnode); 777 778 if (IS_ERR(asd)) { 779 dev_err(dev, "Failed to add subdev: %ld", PTR_ERR(asd)); 780 v4l2_async_nf_cleanup(&priv->notifier); 781 return PTR_ERR(asd); 782 } 783 784 priv->notifier.ops = &ub953_notify_ops; 785 786 ret = v4l2_async_nf_register(&priv->notifier); 787 if (ret) { 788 dev_err(dev, "Failed to register subdev_notifier"); 789 v4l2_async_nf_cleanup(&priv->notifier); 790 return ret; 791 } 792 793 return 0; 794 } 795 796 static void ub953_v4l2_notifier_unregister(struct ub953_data *priv) 797 { 798 v4l2_async_nf_unregister(&priv->notifier); 799 v4l2_async_nf_cleanup(&priv->notifier); 800 } 801 802 /* 803 * Probing 804 */ 805 806 static int ub953_i2c_master_init(struct ub953_data *priv) 807 { 808 /* i2c fast mode */ 809 u32 ref = 26250000; 810 u32 scl_high = 915; /* ns */ 811 u32 scl_low = 1641; /* ns */ 812 int ret; 813 814 scl_high = div64_u64((u64)scl_high * ref, 1000000000) - 5; 815 scl_low = div64_u64((u64)scl_low * ref, 1000000000) - 5; 816 817 ret = ub953_write(priv, UB953_REG_SCL_HIGH_TIME, scl_high, NULL); 818 if (ret) 819 return ret; 820 821 ret = ub953_write(priv, UB953_REG_SCL_LOW_TIME, scl_low, NULL); 822 if (ret) 823 return ret; 824 825 return 0; 826 } 827 828 static u64 ub953_get_fc_rate(struct ub953_data *priv) 829 { 830 switch (priv->mode) { 831 case UB953_MODE_SYNC: 832 if (priv->hw_data->is_ub971) 833 return priv->plat_data->bc_rate * 160ull; 834 else 835 return priv->plat_data->bc_rate / 2 * 160ull; 836 837 case UB953_MODE_NONSYNC_EXT: 838 /* CLKIN_DIV = 1 always */ 839 return clk_get_rate(priv->clkin) * 80ull; 840 841 default: 842 /* Not supported */ 843 return 0; 844 } 845 } 846 847 static unsigned long ub953_calc_clkout_ub953(struct ub953_data *priv, 848 unsigned long target, u64 fc, 849 u8 *hs_div, u8 *m, u8 *n) 850 { 851 /* 852 * We always use 4 as a pre-divider (HS_CLK_DIV = 2). 853 * 854 * According to the datasheet: 855 * - "HS_CLK_DIV typically should be set to either 16, 8, or 4 (default)." 856 * - "if it is not possible to have an integer ratio of N/M, it is best to 857 * select a smaller value for HS_CLK_DIV. 858 * 859 * For above reasons the default HS_CLK_DIV seems the best in the average 860 * case. Use always that value to keep the code simple. 861 */ 862 static const unsigned long hs_clk_div = 4; 863 864 u64 fc_divided; 865 unsigned long mul, div; 866 unsigned long res; 867 868 /* clkout = fc / hs_clk_div * m / n */ 869 870 fc_divided = div_u64(fc, hs_clk_div); 871 872 rational_best_approximation(target, fc_divided, (1 << 5) - 1, 873 (1 << 8) - 1, &mul, &div); 874 875 res = div_u64(fc_divided * mul, div); 876 877 *hs_div = hs_clk_div; 878 *m = mul; 879 *n = div; 880 881 return res; 882 } 883 884 static unsigned long ub953_calc_clkout_ub971(struct ub953_data *priv, 885 unsigned long target, u64 fc, 886 u8 *m, u8 *n) 887 { 888 u64 fc_divided; 889 unsigned long mul, div; 890 unsigned long res; 891 892 /* clkout = fc * m / (8 * n) */ 893 894 fc_divided = div_u64(fc, 8); 895 896 rational_best_approximation(target, fc_divided, (1 << 5) - 1, 897 (1 << 8) - 1, &mul, &div); 898 899 res = div_u64(fc_divided * mul, div); 900 901 *m = mul; 902 *n = div; 903 904 return res; 905 } 906 907 static void ub953_calc_clkout_params(struct ub953_data *priv, 908 unsigned long target_rate, 909 struct ub953_clkout_data *clkout_data) 910 { 911 struct device *dev = &priv->client->dev; 912 unsigned long clkout_rate; 913 u64 fc_rate; 914 915 fc_rate = ub953_get_fc_rate(priv); 916 917 if (priv->hw_data->is_ub971) { 918 u8 m, n; 919 920 clkout_rate = ub953_calc_clkout_ub971(priv, target_rate, 921 fc_rate, &m, &n); 922 923 clkout_data->m = m; 924 clkout_data->n = n; 925 926 dev_dbg(dev, "%s %llu * %u / (8 * %u) = %lu (requested %lu)", 927 __func__, fc_rate, m, n, clkout_rate, target_rate); 928 } else { 929 u8 hs_div, m, n; 930 931 clkout_rate = ub953_calc_clkout_ub953(priv, target_rate, 932 fc_rate, &hs_div, &m, &n); 933 934 clkout_data->hs_div = hs_div; 935 clkout_data->m = m; 936 clkout_data->n = n; 937 938 dev_dbg(dev, "%s %llu / %u * %u / %u = %lu (requested %lu)", 939 __func__, fc_rate, hs_div, m, n, clkout_rate, 940 target_rate); 941 } 942 943 clkout_data->rate = clkout_rate; 944 } 945 946 static int ub953_write_clkout_regs(struct ub953_data *priv, 947 const struct ub953_clkout_data *clkout_data) 948 { 949 u8 clkout_ctrl0, clkout_ctrl1; 950 int ret; 951 952 if (priv->hw_data->is_ub971) 953 clkout_ctrl0 = clkout_data->m; 954 else 955 clkout_ctrl0 = (__ffs(clkout_data->hs_div) << 5) | 956 clkout_data->m; 957 958 clkout_ctrl1 = clkout_data->n; 959 960 ret = ub953_write(priv, UB953_REG_CLKOUT_CTRL0, clkout_ctrl0, NULL); 961 if (ret) 962 return ret; 963 964 ret = ub953_write(priv, UB953_REG_CLKOUT_CTRL1, clkout_ctrl1, NULL); 965 if (ret) 966 return ret; 967 968 return 0; 969 } 970 971 static unsigned long ub953_clkout_recalc_rate(struct clk_hw *hw, 972 unsigned long parent_rate) 973 { 974 struct ub953_data *priv = container_of(hw, struct ub953_data, clkout_clk_hw); 975 struct device *dev = &priv->client->dev; 976 u8 ctrl0, ctrl1; 977 u32 mul, div; 978 u64 fc_rate; 979 u32 hs_clk_div; 980 u64 rate; 981 int ret; 982 983 ret = ub953_read(priv, UB953_REG_CLKOUT_CTRL0, &ctrl0, NULL); 984 if (ret) { 985 dev_err(dev, "Failed to read CLKOUT_CTRL0: %d\n", ret); 986 return 0; 987 } 988 989 ret = ub953_read(priv, UB953_REG_CLKOUT_CTRL1, &ctrl1, NULL); 990 if (ret) { 991 dev_err(dev, "Failed to read CLKOUT_CTRL1: %d\n", ret); 992 return 0; 993 } 994 995 fc_rate = ub953_get_fc_rate(priv); 996 997 if (priv->hw_data->is_ub971) { 998 mul = ctrl0 & 0x1f; 999 div = ctrl1; 1000 1001 if (div == 0) 1002 return 0; 1003 1004 rate = div_u64(fc_rate * mul, 8 * div); 1005 1006 dev_dbg(dev, "clkout: fc rate %llu, mul %u, div %u = %llu\n", 1007 fc_rate, mul, div, rate); 1008 } else { 1009 mul = ctrl0 & 0x1f; 1010 hs_clk_div = 1 << (ctrl0 >> 5); 1011 div = ctrl1; 1012 1013 if (div == 0) 1014 return 0; 1015 1016 rate = div_u64(div_u64(fc_rate, hs_clk_div) * mul, div); 1017 1018 dev_dbg(dev, 1019 "clkout: fc rate %llu, hs_clk_div %u, mul %u, div %u = %llu\n", 1020 fc_rate, hs_clk_div, mul, div, rate); 1021 } 1022 1023 return rate; 1024 } 1025 1026 static long ub953_clkout_round_rate(struct clk_hw *hw, unsigned long rate, 1027 unsigned long *parent_rate) 1028 { 1029 struct ub953_data *priv = container_of(hw, struct ub953_data, clkout_clk_hw); 1030 struct ub953_clkout_data clkout_data; 1031 1032 ub953_calc_clkout_params(priv, rate, &clkout_data); 1033 1034 return clkout_data.rate; 1035 } 1036 1037 static int ub953_clkout_set_rate(struct clk_hw *hw, unsigned long rate, 1038 unsigned long parent_rate) 1039 { 1040 struct ub953_data *priv = container_of(hw, struct ub953_data, clkout_clk_hw); 1041 struct ub953_clkout_data clkout_data; 1042 1043 ub953_calc_clkout_params(priv, rate, &clkout_data); 1044 1045 dev_dbg(&priv->client->dev, "%s %lu (requested %lu)\n", __func__, 1046 clkout_data.rate, rate); 1047 1048 return ub953_write_clkout_regs(priv, &clkout_data); 1049 } 1050 1051 static const struct clk_ops ub953_clkout_ops = { 1052 .recalc_rate = ub953_clkout_recalc_rate, 1053 .round_rate = ub953_clkout_round_rate, 1054 .set_rate = ub953_clkout_set_rate, 1055 }; 1056 1057 static int ub953_register_clkout(struct ub953_data *priv) 1058 { 1059 struct device *dev = &priv->client->dev; 1060 const struct clk_init_data init = { 1061 .name = kasprintf(GFP_KERNEL, "ds90%s.%s.clk_out", 1062 priv->hw_data->model, dev_name(dev)), 1063 .ops = &ub953_clkout_ops, 1064 }; 1065 struct ub953_clkout_data clkout_data; 1066 int ret; 1067 1068 if (!init.name) 1069 return -ENOMEM; 1070 1071 /* Initialize clkout to 25MHz by default */ 1072 ub953_calc_clkout_params(priv, UB953_DEFAULT_CLKOUT_RATE, &clkout_data); 1073 ret = ub953_write_clkout_regs(priv, &clkout_data); 1074 if (ret) 1075 return ret; 1076 1077 priv->clkout_clk_hw.init = &init; 1078 1079 ret = devm_clk_hw_register(dev, &priv->clkout_clk_hw); 1080 kfree(init.name); 1081 if (ret) 1082 return dev_err_probe(dev, ret, "Cannot register clock HW\n"); 1083 1084 ret = devm_of_clk_add_hw_provider(dev, of_clk_hw_simple_get, 1085 &priv->clkout_clk_hw); 1086 if (ret) 1087 return dev_err_probe(dev, ret, 1088 "Cannot add OF clock provider\n"); 1089 1090 return 0; 1091 } 1092 1093 static int ub953_add_i2c_adapter(struct ub953_data *priv) 1094 { 1095 struct device *dev = &priv->client->dev; 1096 struct i2c_atr_adap_desc desc = { }; 1097 struct fwnode_handle *i2c_handle; 1098 int ret; 1099 1100 i2c_handle = device_get_named_child_node(dev, "i2c"); 1101 if (!i2c_handle) 1102 return 0; 1103 1104 desc.chan_id = priv->plat_data->port; 1105 desc.parent = dev; 1106 desc.bus_handle = i2c_handle; 1107 desc.num_aliases = 0; 1108 1109 ret = i2c_atr_add_adapter(priv->plat_data->atr, &desc); 1110 1111 fwnode_handle_put(i2c_handle); 1112 1113 if (ret) 1114 return ret; 1115 1116 return 0; 1117 } 1118 1119 static const struct regmap_config ub953_regmap_config = { 1120 .name = "ds90ub953", 1121 .reg_bits = 8, 1122 .val_bits = 8, 1123 .reg_format_endian = REGMAP_ENDIAN_DEFAULT, 1124 .val_format_endian = REGMAP_ENDIAN_DEFAULT, 1125 }; 1126 1127 static int ub953_parse_dt(struct ub953_data *priv) 1128 { 1129 struct device *dev = &priv->client->dev; 1130 struct v4l2_fwnode_endpoint vep = { 1131 .bus_type = V4L2_MBUS_CSI2_DPHY, 1132 }; 1133 struct fwnode_handle *ep_fwnode; 1134 unsigned char nlanes; 1135 int ret; 1136 1137 ep_fwnode = fwnode_graph_get_endpoint_by_id(dev_fwnode(dev), 1138 UB953_PAD_SINK, 0, 0); 1139 if (!ep_fwnode) 1140 return dev_err_probe(dev, -ENOENT, "no endpoint found\n"); 1141 1142 ret = v4l2_fwnode_endpoint_parse(ep_fwnode, &vep); 1143 1144 fwnode_handle_put(ep_fwnode); 1145 1146 if (ret) 1147 return dev_err_probe(dev, ret, 1148 "failed to parse sink endpoint data\n"); 1149 1150 nlanes = vep.bus.mipi_csi2.num_data_lanes; 1151 if (nlanes != 1 && nlanes != 2 && nlanes != 4) 1152 return dev_err_probe(dev, -EINVAL, 1153 "bad number of data-lanes: %u\n", nlanes); 1154 1155 priv->num_data_lanes = nlanes; 1156 1157 priv->non_continous_clk = vep.bus.mipi_csi2.flags & 1158 V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK; 1159 1160 return 0; 1161 } 1162 1163 static int ub953_hw_init(struct ub953_data *priv) 1164 { 1165 struct device *dev = &priv->client->dev; 1166 bool mode_override; 1167 int ret; 1168 u8 v; 1169 1170 ret = ub953_read(priv, UB953_REG_MODE_SEL, &v, NULL); 1171 if (ret) 1172 return ret; 1173 1174 if (!(v & UB953_REG_MODE_SEL_MODE_DONE)) 1175 return dev_err_probe(dev, -EIO, "Mode value not stabilized\n"); 1176 1177 mode_override = v & UB953_REG_MODE_SEL_MODE_OVERRIDE; 1178 1179 switch (v & UB953_REG_MODE_SEL_MODE_MASK) { 1180 case 0: 1181 priv->mode = UB953_MODE_SYNC; 1182 break; 1183 case 2: 1184 priv->mode = UB953_MODE_NONSYNC_EXT; 1185 break; 1186 case 3: 1187 priv->mode = UB953_MODE_NONSYNC_INT; 1188 break; 1189 case 5: 1190 priv->mode = UB953_MODE_DVP; 1191 break; 1192 default: 1193 return dev_err_probe(dev, -EIO, 1194 "Invalid mode in mode register\n"); 1195 } 1196 1197 dev_dbg(dev, "mode from %s: %#x\n", mode_override ? "reg" : "strap", 1198 priv->mode); 1199 1200 if (priv->mode != UB953_MODE_SYNC && 1201 priv->mode != UB953_MODE_NONSYNC_EXT) 1202 return dev_err_probe(dev, -ENODEV, 1203 "Unsupported mode selected: %u\n", 1204 priv->mode); 1205 1206 if (priv->mode == UB953_MODE_NONSYNC_EXT && !priv->clkin) 1207 return dev_err_probe(dev, -EINVAL, 1208 "clkin required for non-sync ext mode\n"); 1209 1210 ret = ub953_read(priv, UB953_REG_REV_MASK_ID, &v, NULL); 1211 if (ret) 1212 return dev_err_probe(dev, ret, "Failed to read revision"); 1213 1214 dev_info(dev, "Found %s rev/mask %#04x\n", priv->hw_data->model, v); 1215 1216 ret = ub953_read(priv, UB953_REG_GENERAL_CFG, &v, NULL); 1217 if (ret) 1218 return ret; 1219 1220 dev_dbg(dev, "i2c strap setting %s V\n", 1221 (v & UB953_REG_GENERAL_CFG_I2C_STRAP_MODE) ? "1.8" : "3.3"); 1222 1223 ret = ub953_i2c_master_init(priv); 1224 if (ret) 1225 return dev_err_probe(dev, ret, "i2c init failed\n"); 1226 1227 v = 0; 1228 v |= priv->non_continous_clk ? 0 : UB953_REG_GENERAL_CFG_CONT_CLK; 1229 v |= (priv->num_data_lanes - 1) << 1230 UB953_REG_GENERAL_CFG_CSI_LANE_SEL_SHIFT; 1231 v |= UB953_REG_GENERAL_CFG_CRC_TX_GEN_ENABLE; 1232 1233 ret = ub953_write(priv, UB953_REG_GENERAL_CFG, v, NULL); 1234 if (ret) 1235 return ret; 1236 1237 v = 1U << UB953_REG_I2C_CONTROL2_SDA_OUTPUT_SETUP_SHIFT; 1238 v |= UB953_REG_I2C_CONTROL2_BUS_SPEEDUP; 1239 1240 ret = ub953_write(priv, UB953_REG_I2C_CONTROL2, v, NULL); 1241 1242 return ret; 1243 } 1244 1245 static int ub953_subdev_init(struct ub953_data *priv) 1246 { 1247 struct device *dev = &priv->client->dev; 1248 int ret; 1249 1250 v4l2_i2c_subdev_init(&priv->sd, priv->client, &ub953_subdev_ops); 1251 priv->sd.internal_ops = &ub953_internal_ops; 1252 1253 priv->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | 1254 V4L2_SUBDEV_FL_STREAMS; 1255 priv->sd.entity.function = MEDIA_ENT_F_VID_IF_BRIDGE; 1256 priv->sd.entity.ops = &ub953_entity_ops; 1257 1258 priv->pads[0].flags = MEDIA_PAD_FL_SINK; 1259 priv->pads[1].flags = MEDIA_PAD_FL_SOURCE; 1260 1261 ret = media_entity_pads_init(&priv->sd.entity, 2, priv->pads); 1262 if (ret) 1263 return dev_err_probe(dev, ret, "Failed to init pads\n"); 1264 1265 ret = v4l2_subdev_init_finalize(&priv->sd); 1266 if (ret) 1267 goto err_entity_cleanup; 1268 1269 ret = ub953_v4l2_notifier_register(priv); 1270 if (ret) { 1271 dev_err_probe(dev, ret, 1272 "v4l2 subdev notifier register failed\n"); 1273 goto err_free_state; 1274 } 1275 1276 ret = v4l2_async_register_subdev(&priv->sd); 1277 if (ret) { 1278 dev_err_probe(dev, ret, "v4l2_async_register_subdev error\n"); 1279 goto err_unreg_notif; 1280 } 1281 1282 return 0; 1283 1284 err_unreg_notif: 1285 ub953_v4l2_notifier_unregister(priv); 1286 err_free_state: 1287 v4l2_subdev_cleanup(&priv->sd); 1288 err_entity_cleanup: 1289 media_entity_cleanup(&priv->sd.entity); 1290 1291 return ret; 1292 } 1293 1294 static void ub953_subdev_uninit(struct ub953_data *priv) 1295 { 1296 v4l2_async_unregister_subdev(&priv->sd); 1297 ub953_v4l2_notifier_unregister(priv); 1298 v4l2_subdev_cleanup(&priv->sd); 1299 media_entity_cleanup(&priv->sd.entity); 1300 } 1301 1302 static int ub953_probe(struct i2c_client *client) 1303 { 1304 struct device *dev = &client->dev; 1305 struct ub953_data *priv; 1306 int ret; 1307 1308 priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); 1309 if (!priv) 1310 return -ENOMEM; 1311 1312 priv->client = client; 1313 1314 priv->hw_data = device_get_match_data(dev); 1315 1316 priv->plat_data = dev_get_platdata(&client->dev); 1317 if (!priv->plat_data) 1318 return dev_err_probe(dev, -ENODEV, "Platform data missing\n"); 1319 1320 mutex_init(&priv->reg_lock); 1321 1322 /* 1323 * Initialize to invalid values so that the first reg writes will 1324 * configure the target. 1325 */ 1326 priv->current_indirect_target = 0xff; 1327 1328 priv->regmap = devm_regmap_init_i2c(client, &ub953_regmap_config); 1329 if (IS_ERR(priv->regmap)) { 1330 ret = PTR_ERR(priv->regmap); 1331 dev_err_probe(dev, ret, "Failed to init regmap\n"); 1332 goto err_mutex_destroy; 1333 } 1334 1335 priv->clkin = devm_clk_get_optional(dev, "clkin"); 1336 if (IS_ERR(priv->clkin)) { 1337 ret = PTR_ERR(priv->clkin); 1338 dev_err_probe(dev, ret, "failed to parse 'clkin'\n"); 1339 goto err_mutex_destroy; 1340 } 1341 1342 ret = ub953_parse_dt(priv); 1343 if (ret) 1344 goto err_mutex_destroy; 1345 1346 ret = ub953_hw_init(priv); 1347 if (ret) 1348 goto err_mutex_destroy; 1349 1350 ret = ub953_gpiochip_probe(priv); 1351 if (ret) { 1352 dev_err_probe(dev, ret, "Failed to init gpiochip\n"); 1353 goto err_mutex_destroy; 1354 } 1355 1356 ret = ub953_register_clkout(priv); 1357 if (ret) { 1358 dev_err_probe(dev, ret, "Failed to register clkout\n"); 1359 goto err_gpiochip_remove; 1360 } 1361 1362 ret = ub953_subdev_init(priv); 1363 if (ret) 1364 goto err_gpiochip_remove; 1365 1366 ret = ub953_add_i2c_adapter(priv); 1367 if (ret) { 1368 dev_err_probe(dev, ret, "failed to add remote i2c adapter\n"); 1369 goto err_subdev_uninit; 1370 } 1371 1372 return 0; 1373 1374 err_subdev_uninit: 1375 ub953_subdev_uninit(priv); 1376 err_gpiochip_remove: 1377 ub953_gpiochip_remove(priv); 1378 err_mutex_destroy: 1379 mutex_destroy(&priv->reg_lock); 1380 1381 return ret; 1382 } 1383 1384 static void ub953_remove(struct i2c_client *client) 1385 { 1386 struct v4l2_subdev *sd = i2c_get_clientdata(client); 1387 struct ub953_data *priv = sd_to_ub953(sd); 1388 1389 i2c_atr_del_adapter(priv->plat_data->atr, priv->plat_data->port); 1390 1391 ub953_subdev_uninit(priv); 1392 1393 ub953_gpiochip_remove(priv); 1394 mutex_destroy(&priv->reg_lock); 1395 } 1396 1397 static const struct ub953_hw_data ds90ub953_hw = { 1398 .model = "ub953", 1399 }; 1400 1401 static const struct ub953_hw_data ds90ub971_hw = { 1402 .model = "ub971", 1403 .is_ub971 = true, 1404 }; 1405 1406 static const struct i2c_device_id ub953_id[] = { 1407 { "ds90ub953-q1", (kernel_ulong_t)&ds90ub953_hw }, 1408 { "ds90ub971-q1", (kernel_ulong_t)&ds90ub971_hw }, 1409 {} 1410 }; 1411 MODULE_DEVICE_TABLE(i2c, ub953_id); 1412 1413 static const struct of_device_id ub953_dt_ids[] = { 1414 { .compatible = "ti,ds90ub953-q1", .data = &ds90ub953_hw }, 1415 { .compatible = "ti,ds90ub971-q1", .data = &ds90ub971_hw }, 1416 {} 1417 }; 1418 MODULE_DEVICE_TABLE(of, ub953_dt_ids); 1419 1420 static struct i2c_driver ds90ub953_driver = { 1421 .probe = ub953_probe, 1422 .remove = ub953_remove, 1423 .id_table = ub953_id, 1424 .driver = { 1425 .name = "ds90ub953", 1426 .of_match_table = ub953_dt_ids, 1427 }, 1428 }; 1429 module_i2c_driver(ds90ub953_driver); 1430 1431 MODULE_LICENSE("GPL"); 1432 MODULE_DESCRIPTION("Texas Instruments FPD-Link III/IV CSI-2 Serializers Driver"); 1433 MODULE_AUTHOR("Luca Ceresoli <luca@lucaceresoli.net>"); 1434 MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>"); 1435 MODULE_IMPORT_NS("I2C_ATR"); 1436