1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * camss-csiphy.c 4 * 5 * Qualcomm MSM Camera Subsystem - CSIPHY Module 6 * 7 * Copyright (c) 2011-2015, The Linux Foundation. All rights reserved. 8 * Copyright (C) 2016-2018 Linaro Ltd. 9 */ 10 #include <linux/clk.h> 11 #include <linux/delay.h> 12 #include <linux/interrupt.h> 13 #include <linux/kernel.h> 14 #include <linux/of.h> 15 #include <linux/platform_device.h> 16 #include <linux/pm_runtime.h> 17 #include <media/media-entity.h> 18 #include <media/v4l2-device.h> 19 #include <media/v4l2-subdev.h> 20 21 #include "camss-csiphy.h" 22 #include "camss.h" 23 24 #define MSM_CSIPHY_NAME "msm_csiphy" 25 26 struct csiphy_format { 27 u32 code; 28 u8 bpp; 29 }; 30 31 static const struct csiphy_format csiphy_formats_8x16[] = { 32 { MEDIA_BUS_FMT_UYVY8_2X8, 8 }, 33 { MEDIA_BUS_FMT_VYUY8_2X8, 8 }, 34 { MEDIA_BUS_FMT_YUYV8_2X8, 8 }, 35 { MEDIA_BUS_FMT_YVYU8_2X8, 8 }, 36 { MEDIA_BUS_FMT_SBGGR8_1X8, 8 }, 37 { MEDIA_BUS_FMT_SGBRG8_1X8, 8 }, 38 { MEDIA_BUS_FMT_SGRBG8_1X8, 8 }, 39 { MEDIA_BUS_FMT_SRGGB8_1X8, 8 }, 40 { MEDIA_BUS_FMT_SBGGR10_1X10, 10 }, 41 { MEDIA_BUS_FMT_SGBRG10_1X10, 10 }, 42 { MEDIA_BUS_FMT_SGRBG10_1X10, 10 }, 43 { MEDIA_BUS_FMT_SRGGB10_1X10, 10 }, 44 { MEDIA_BUS_FMT_SBGGR12_1X12, 12 }, 45 { MEDIA_BUS_FMT_SGBRG12_1X12, 12 }, 46 { MEDIA_BUS_FMT_SGRBG12_1X12, 12 }, 47 { MEDIA_BUS_FMT_SRGGB12_1X12, 12 }, 48 { MEDIA_BUS_FMT_Y10_1X10, 10 }, 49 }; 50 51 static const struct csiphy_format csiphy_formats_8x96[] = { 52 { MEDIA_BUS_FMT_UYVY8_2X8, 8 }, 53 { MEDIA_BUS_FMT_VYUY8_2X8, 8 }, 54 { MEDIA_BUS_FMT_YUYV8_2X8, 8 }, 55 { MEDIA_BUS_FMT_YVYU8_2X8, 8 }, 56 { MEDIA_BUS_FMT_SBGGR8_1X8, 8 }, 57 { MEDIA_BUS_FMT_SGBRG8_1X8, 8 }, 58 { MEDIA_BUS_FMT_SGRBG8_1X8, 8 }, 59 { MEDIA_BUS_FMT_SRGGB8_1X8, 8 }, 60 { MEDIA_BUS_FMT_SBGGR10_1X10, 10 }, 61 { MEDIA_BUS_FMT_SGBRG10_1X10, 10 }, 62 { MEDIA_BUS_FMT_SGRBG10_1X10, 10 }, 63 { MEDIA_BUS_FMT_SRGGB10_1X10, 10 }, 64 { MEDIA_BUS_FMT_SBGGR12_1X12, 12 }, 65 { MEDIA_BUS_FMT_SGBRG12_1X12, 12 }, 66 { MEDIA_BUS_FMT_SGRBG12_1X12, 12 }, 67 { MEDIA_BUS_FMT_SRGGB12_1X12, 12 }, 68 { MEDIA_BUS_FMT_SBGGR14_1X14, 14 }, 69 { MEDIA_BUS_FMT_SGBRG14_1X14, 14 }, 70 { MEDIA_BUS_FMT_SGRBG14_1X14, 14 }, 71 { MEDIA_BUS_FMT_SRGGB14_1X14, 14 }, 72 { MEDIA_BUS_FMT_Y10_1X10, 10 }, 73 }; 74 75 /* 76 * csiphy_get_bpp - map media bus format to bits per pixel 77 * @formats: supported media bus formats array 78 * @nformats: size of @formats array 79 * @code: media bus format code 80 * 81 * Return number of bits per pixel 82 */ 83 static u8 csiphy_get_bpp(const struct csiphy_format *formats, 84 unsigned int nformats, u32 code) 85 { 86 unsigned int i; 87 88 for (i = 0; i < nformats; i++) 89 if (code == formats[i].code) 90 return formats[i].bpp; 91 92 WARN(1, "Unknown format\n"); 93 94 return formats[0].bpp; 95 } 96 97 /* 98 * csiphy_set_clock_rates - Calculate and set clock rates on CSIPHY module 99 * @csiphy: CSIPHY device 100 */ 101 static int csiphy_set_clock_rates(struct csiphy_device *csiphy) 102 { 103 struct device *dev = csiphy->camss->dev; 104 u32 pixel_clock; 105 int i, j; 106 int ret; 107 108 ret = camss_get_pixel_clock(&csiphy->subdev.entity, &pixel_clock); 109 if (ret) 110 pixel_clock = 0; 111 112 for (i = 0; i < csiphy->nclocks; i++) { 113 struct camss_clock *clock = &csiphy->clock[i]; 114 115 if (!strcmp(clock->name, "csiphy0_timer") || 116 !strcmp(clock->name, "csiphy1_timer") || 117 !strcmp(clock->name, "csiphy2_timer")) { 118 u8 bpp = csiphy_get_bpp(csiphy->formats, 119 csiphy->nformats, 120 csiphy->fmt[MSM_CSIPHY_PAD_SINK].code); 121 u8 num_lanes = csiphy->cfg.csi2->lane_cfg.num_data; 122 u64 min_rate = pixel_clock * bpp / (2 * num_lanes * 4); 123 long round_rate; 124 125 camss_add_clock_margin(&min_rate); 126 127 for (j = 0; j < clock->nfreqs; j++) 128 if (min_rate < clock->freq[j]) 129 break; 130 131 if (j == clock->nfreqs) { 132 dev_err(dev, 133 "Pixel clock is too high for CSIPHY\n"); 134 return -EINVAL; 135 } 136 137 /* if sensor pixel clock is not available */ 138 /* set highest possible CSIPHY clock rate */ 139 if (min_rate == 0) 140 j = clock->nfreqs - 1; 141 142 round_rate = clk_round_rate(clock->clk, clock->freq[j]); 143 if (round_rate < 0) { 144 dev_err(dev, "clk round rate failed: %ld\n", 145 round_rate); 146 return -EINVAL; 147 } 148 149 csiphy->timer_clk_rate = round_rate; 150 151 ret = clk_set_rate(clock->clk, csiphy->timer_clk_rate); 152 if (ret < 0) { 153 dev_err(dev, "clk set rate failed: %d\n", ret); 154 return ret; 155 } 156 } 157 } 158 159 return 0; 160 } 161 162 /* 163 * csiphy_set_power - Power on/off CSIPHY module 164 * @sd: CSIPHY V4L2 subdevice 165 * @on: Requested power state 166 * 167 * Return 0 on success or a negative error code otherwise 168 */ 169 static int csiphy_set_power(struct v4l2_subdev *sd, int on) 170 { 171 struct csiphy_device *csiphy = v4l2_get_subdevdata(sd); 172 struct device *dev = csiphy->camss->dev; 173 174 if (on) { 175 int ret; 176 177 ret = pm_runtime_get_sync(dev); 178 if (ret < 0) 179 return ret; 180 181 ret = csiphy_set_clock_rates(csiphy); 182 if (ret < 0) { 183 pm_runtime_put_sync(dev); 184 return ret; 185 } 186 187 ret = camss_enable_clocks(csiphy->nclocks, csiphy->clock, dev); 188 if (ret < 0) { 189 pm_runtime_put_sync(dev); 190 return ret; 191 } 192 193 enable_irq(csiphy->irq); 194 195 csiphy->ops->reset(csiphy); 196 197 csiphy->ops->hw_version_read(csiphy, dev); 198 } else { 199 disable_irq(csiphy->irq); 200 201 camss_disable_clocks(csiphy->nclocks, csiphy->clock); 202 203 pm_runtime_put_sync(dev); 204 } 205 206 return 0; 207 } 208 209 /* 210 * csiphy_get_lane_mask - Calculate CSI2 lane mask configuration parameter 211 * @lane_cfg - CSI2 lane configuration 212 * 213 * Return lane mask 214 */ 215 static u8 csiphy_get_lane_mask(struct csiphy_lanes_cfg *lane_cfg) 216 { 217 u8 lane_mask; 218 int i; 219 220 lane_mask = 1 << lane_cfg->clk.pos; 221 222 for (i = 0; i < lane_cfg->num_data; i++) 223 lane_mask |= 1 << lane_cfg->data[i].pos; 224 225 return lane_mask; 226 } 227 228 /* 229 * csiphy_stream_on - Enable streaming on CSIPHY module 230 * @csiphy: CSIPHY device 231 * 232 * Helper function to enable streaming on CSIPHY module. 233 * Main configuration of CSIPHY module is also done here. 234 * 235 * Return 0 on success or a negative error code otherwise 236 */ 237 static int csiphy_stream_on(struct csiphy_device *csiphy) 238 { 239 struct csiphy_config *cfg = &csiphy->cfg; 240 u32 pixel_clock; 241 u8 lane_mask = csiphy_get_lane_mask(&cfg->csi2->lane_cfg); 242 u8 bpp = csiphy_get_bpp(csiphy->formats, csiphy->nformats, 243 csiphy->fmt[MSM_CSIPHY_PAD_SINK].code); 244 u8 val; 245 int ret; 246 247 ret = camss_get_pixel_clock(&csiphy->subdev.entity, &pixel_clock); 248 if (ret) { 249 dev_err(csiphy->camss->dev, 250 "Cannot get CSI2 transmitter's pixel clock\n"); 251 return -EINVAL; 252 } 253 if (!pixel_clock) { 254 dev_err(csiphy->camss->dev, 255 "Got pixel clock == 0, cannot continue\n"); 256 return -EINVAL; 257 } 258 259 val = readl_relaxed(csiphy->base_clk_mux); 260 if (cfg->combo_mode && (lane_mask & 0x18) == 0x18) { 261 val &= ~0xf0; 262 val |= cfg->csid_id << 4; 263 } else { 264 val &= ~0xf; 265 val |= cfg->csid_id; 266 } 267 writel_relaxed(val, csiphy->base_clk_mux); 268 wmb(); 269 270 csiphy->ops->lanes_enable(csiphy, cfg, pixel_clock, bpp, lane_mask); 271 272 return 0; 273 } 274 275 /* 276 * csiphy_stream_off - Disable streaming on CSIPHY module 277 * @csiphy: CSIPHY device 278 * 279 * Helper function to disable streaming on CSIPHY module 280 */ 281 static void csiphy_stream_off(struct csiphy_device *csiphy) 282 { 283 csiphy->ops->lanes_disable(csiphy, &csiphy->cfg); 284 } 285 286 287 /* 288 * csiphy_set_stream - Enable/disable streaming on CSIPHY module 289 * @sd: CSIPHY V4L2 subdevice 290 * @enable: Requested streaming state 291 * 292 * Return 0 on success or a negative error code otherwise 293 */ 294 static int csiphy_set_stream(struct v4l2_subdev *sd, int enable) 295 { 296 struct csiphy_device *csiphy = v4l2_get_subdevdata(sd); 297 int ret = 0; 298 299 if (enable) 300 ret = csiphy_stream_on(csiphy); 301 else 302 csiphy_stream_off(csiphy); 303 304 return ret; 305 } 306 307 /* 308 * __csiphy_get_format - Get pointer to format structure 309 * @csiphy: CSIPHY device 310 * @cfg: V4L2 subdev pad configuration 311 * @pad: pad from which format is requested 312 * @which: TRY or ACTIVE format 313 * 314 * Return pointer to TRY or ACTIVE format structure 315 */ 316 static struct v4l2_mbus_framefmt * 317 __csiphy_get_format(struct csiphy_device *csiphy, 318 struct v4l2_subdev_pad_config *cfg, 319 unsigned int pad, 320 enum v4l2_subdev_format_whence which) 321 { 322 if (which == V4L2_SUBDEV_FORMAT_TRY) 323 return v4l2_subdev_get_try_format(&csiphy->subdev, cfg, pad); 324 325 return &csiphy->fmt[pad]; 326 } 327 328 /* 329 * csiphy_try_format - Handle try format by pad subdev method 330 * @csiphy: CSIPHY device 331 * @cfg: V4L2 subdev pad configuration 332 * @pad: pad on which format is requested 333 * @fmt: pointer to v4l2 format structure 334 * @which: wanted subdev format 335 */ 336 static void csiphy_try_format(struct csiphy_device *csiphy, 337 struct v4l2_subdev_pad_config *cfg, 338 unsigned int pad, 339 struct v4l2_mbus_framefmt *fmt, 340 enum v4l2_subdev_format_whence which) 341 { 342 unsigned int i; 343 344 switch (pad) { 345 case MSM_CSIPHY_PAD_SINK: 346 /* Set format on sink pad */ 347 348 for (i = 0; i < csiphy->nformats; i++) 349 if (fmt->code == csiphy->formats[i].code) 350 break; 351 352 /* If not found, use UYVY as default */ 353 if (i >= csiphy->nformats) 354 fmt->code = MEDIA_BUS_FMT_UYVY8_2X8; 355 356 fmt->width = clamp_t(u32, fmt->width, 1, 8191); 357 fmt->height = clamp_t(u32, fmt->height, 1, 8191); 358 359 fmt->field = V4L2_FIELD_NONE; 360 fmt->colorspace = V4L2_COLORSPACE_SRGB; 361 362 break; 363 364 case MSM_CSIPHY_PAD_SRC: 365 /* Set and return a format same as sink pad */ 366 367 *fmt = *__csiphy_get_format(csiphy, cfg, MSM_CSID_PAD_SINK, 368 which); 369 370 break; 371 } 372 } 373 374 /* 375 * csiphy_enum_mbus_code - Handle pixel format enumeration 376 * @sd: CSIPHY V4L2 subdevice 377 * @cfg: V4L2 subdev pad configuration 378 * @code: pointer to v4l2_subdev_mbus_code_enum structure 379 * return -EINVAL or zero on success 380 */ 381 static int csiphy_enum_mbus_code(struct v4l2_subdev *sd, 382 struct v4l2_subdev_pad_config *cfg, 383 struct v4l2_subdev_mbus_code_enum *code) 384 { 385 struct csiphy_device *csiphy = v4l2_get_subdevdata(sd); 386 struct v4l2_mbus_framefmt *format; 387 388 if (code->pad == MSM_CSIPHY_PAD_SINK) { 389 if (code->index >= csiphy->nformats) 390 return -EINVAL; 391 392 code->code = csiphy->formats[code->index].code; 393 } else { 394 if (code->index > 0) 395 return -EINVAL; 396 397 format = __csiphy_get_format(csiphy, cfg, MSM_CSIPHY_PAD_SINK, 398 code->which); 399 400 code->code = format->code; 401 } 402 403 return 0; 404 } 405 406 /* 407 * csiphy_enum_frame_size - Handle frame size enumeration 408 * @sd: CSIPHY V4L2 subdevice 409 * @cfg: V4L2 subdev pad configuration 410 * @fse: pointer to v4l2_subdev_frame_size_enum structure 411 * return -EINVAL or zero on success 412 */ 413 static int csiphy_enum_frame_size(struct v4l2_subdev *sd, 414 struct v4l2_subdev_pad_config *cfg, 415 struct v4l2_subdev_frame_size_enum *fse) 416 { 417 struct csiphy_device *csiphy = v4l2_get_subdevdata(sd); 418 struct v4l2_mbus_framefmt format; 419 420 if (fse->index != 0) 421 return -EINVAL; 422 423 format.code = fse->code; 424 format.width = 1; 425 format.height = 1; 426 csiphy_try_format(csiphy, cfg, fse->pad, &format, fse->which); 427 fse->min_width = format.width; 428 fse->min_height = format.height; 429 430 if (format.code != fse->code) 431 return -EINVAL; 432 433 format.code = fse->code; 434 format.width = -1; 435 format.height = -1; 436 csiphy_try_format(csiphy, cfg, fse->pad, &format, fse->which); 437 fse->max_width = format.width; 438 fse->max_height = format.height; 439 440 return 0; 441 } 442 443 /* 444 * csiphy_get_format - Handle get format by pads subdev method 445 * @sd: CSIPHY V4L2 subdevice 446 * @cfg: V4L2 subdev pad configuration 447 * @fmt: pointer to v4l2 subdev format structure 448 * 449 * Return -EINVAL or zero on success 450 */ 451 static int csiphy_get_format(struct v4l2_subdev *sd, 452 struct v4l2_subdev_pad_config *cfg, 453 struct v4l2_subdev_format *fmt) 454 { 455 struct csiphy_device *csiphy = v4l2_get_subdevdata(sd); 456 struct v4l2_mbus_framefmt *format; 457 458 format = __csiphy_get_format(csiphy, cfg, fmt->pad, fmt->which); 459 if (format == NULL) 460 return -EINVAL; 461 462 fmt->format = *format; 463 464 return 0; 465 } 466 467 /* 468 * csiphy_set_format - Handle set format by pads subdev method 469 * @sd: CSIPHY V4L2 subdevice 470 * @cfg: V4L2 subdev pad configuration 471 * @fmt: pointer to v4l2 subdev format structure 472 * 473 * Return -EINVAL or zero on success 474 */ 475 static int csiphy_set_format(struct v4l2_subdev *sd, 476 struct v4l2_subdev_pad_config *cfg, 477 struct v4l2_subdev_format *fmt) 478 { 479 struct csiphy_device *csiphy = v4l2_get_subdevdata(sd); 480 struct v4l2_mbus_framefmt *format; 481 482 format = __csiphy_get_format(csiphy, cfg, fmt->pad, fmt->which); 483 if (format == NULL) 484 return -EINVAL; 485 486 csiphy_try_format(csiphy, cfg, fmt->pad, &fmt->format, fmt->which); 487 *format = fmt->format; 488 489 /* Propagate the format from sink to source */ 490 if (fmt->pad == MSM_CSIPHY_PAD_SINK) { 491 format = __csiphy_get_format(csiphy, cfg, MSM_CSIPHY_PAD_SRC, 492 fmt->which); 493 494 *format = fmt->format; 495 csiphy_try_format(csiphy, cfg, MSM_CSIPHY_PAD_SRC, format, 496 fmt->which); 497 } 498 499 return 0; 500 } 501 502 /* 503 * csiphy_init_formats - Initialize formats on all pads 504 * @sd: CSIPHY V4L2 subdevice 505 * @fh: V4L2 subdev file handle 506 * 507 * Initialize all pad formats with default values. 508 * 509 * Return 0 on success or a negative error code otherwise 510 */ 511 static int csiphy_init_formats(struct v4l2_subdev *sd, 512 struct v4l2_subdev_fh *fh) 513 { 514 struct v4l2_subdev_format format = { 515 .pad = MSM_CSIPHY_PAD_SINK, 516 .which = fh ? V4L2_SUBDEV_FORMAT_TRY : 517 V4L2_SUBDEV_FORMAT_ACTIVE, 518 .format = { 519 .code = MEDIA_BUS_FMT_UYVY8_2X8, 520 .width = 1920, 521 .height = 1080 522 } 523 }; 524 525 return csiphy_set_format(sd, fh ? fh->pad : NULL, &format); 526 } 527 528 /* 529 * msm_csiphy_subdev_init - Initialize CSIPHY device structure and resources 530 * @csiphy: CSIPHY device 531 * @res: CSIPHY module resources table 532 * @id: CSIPHY module id 533 * 534 * Return 0 on success or a negative error code otherwise 535 */ 536 int msm_csiphy_subdev_init(struct camss *camss, 537 struct csiphy_device *csiphy, 538 const struct resources *res, u8 id) 539 { 540 struct device *dev = camss->dev; 541 struct platform_device *pdev = to_platform_device(dev); 542 struct resource *r; 543 int i, j; 544 int ret; 545 546 csiphy->camss = camss; 547 csiphy->id = id; 548 csiphy->cfg.combo_mode = 0; 549 550 if (camss->version == CAMSS_8x16) { 551 csiphy->ops = &csiphy_ops_2ph_1_0; 552 csiphy->formats = csiphy_formats_8x16; 553 csiphy->nformats = ARRAY_SIZE(csiphy_formats_8x16); 554 } else if (camss->version == CAMSS_8x96) { 555 csiphy->ops = &csiphy_ops_3ph_1_0; 556 csiphy->formats = csiphy_formats_8x96; 557 csiphy->nformats = ARRAY_SIZE(csiphy_formats_8x96); 558 } else { 559 return -EINVAL; 560 } 561 562 /* Memory */ 563 564 r = platform_get_resource_byname(pdev, IORESOURCE_MEM, res->reg[0]); 565 csiphy->base = devm_ioremap_resource(dev, r); 566 if (IS_ERR(csiphy->base)) { 567 dev_err(dev, "could not map memory\n"); 568 return PTR_ERR(csiphy->base); 569 } 570 571 r = platform_get_resource_byname(pdev, IORESOURCE_MEM, res->reg[1]); 572 csiphy->base_clk_mux = devm_ioremap_resource(dev, r); 573 if (IS_ERR(csiphy->base_clk_mux)) { 574 dev_err(dev, "could not map memory\n"); 575 return PTR_ERR(csiphy->base_clk_mux); 576 } 577 578 /* Interrupt */ 579 580 r = platform_get_resource_byname(pdev, IORESOURCE_IRQ, 581 res->interrupt[0]); 582 if (!r) { 583 dev_err(dev, "missing IRQ\n"); 584 return -EINVAL; 585 } 586 587 csiphy->irq = r->start; 588 snprintf(csiphy->irq_name, sizeof(csiphy->irq_name), "%s_%s%d", 589 dev_name(dev), MSM_CSIPHY_NAME, csiphy->id); 590 591 ret = devm_request_irq(dev, csiphy->irq, csiphy->ops->isr, 592 IRQF_TRIGGER_RISING, csiphy->irq_name, csiphy); 593 if (ret < 0) { 594 dev_err(dev, "request_irq failed: %d\n", ret); 595 return ret; 596 } 597 598 disable_irq(csiphy->irq); 599 600 /* Clocks */ 601 602 csiphy->nclocks = 0; 603 while (res->clock[csiphy->nclocks]) 604 csiphy->nclocks++; 605 606 csiphy->clock = devm_kcalloc(dev, 607 csiphy->nclocks, sizeof(*csiphy->clock), 608 GFP_KERNEL); 609 if (!csiphy->clock) 610 return -ENOMEM; 611 612 for (i = 0; i < csiphy->nclocks; i++) { 613 struct camss_clock *clock = &csiphy->clock[i]; 614 615 clock->clk = devm_clk_get(dev, res->clock[i]); 616 if (IS_ERR(clock->clk)) 617 return PTR_ERR(clock->clk); 618 619 clock->name = res->clock[i]; 620 621 clock->nfreqs = 0; 622 while (res->clock_rate[i][clock->nfreqs]) 623 clock->nfreqs++; 624 625 if (!clock->nfreqs) { 626 clock->freq = NULL; 627 continue; 628 } 629 630 clock->freq = devm_kcalloc(dev, 631 clock->nfreqs, 632 sizeof(*clock->freq), 633 GFP_KERNEL); 634 if (!clock->freq) 635 return -ENOMEM; 636 637 for (j = 0; j < clock->nfreqs; j++) 638 clock->freq[j] = res->clock_rate[i][j]; 639 } 640 641 return 0; 642 } 643 644 /* 645 * csiphy_link_setup - Setup CSIPHY connections 646 * @entity: Pointer to media entity structure 647 * @local: Pointer to local pad 648 * @remote: Pointer to remote pad 649 * @flags: Link flags 650 * 651 * Rreturn 0 on success 652 */ 653 static int csiphy_link_setup(struct media_entity *entity, 654 const struct media_pad *local, 655 const struct media_pad *remote, u32 flags) 656 { 657 if ((local->flags & MEDIA_PAD_FL_SOURCE) && 658 (flags & MEDIA_LNK_FL_ENABLED)) { 659 struct v4l2_subdev *sd; 660 struct csiphy_device *csiphy; 661 struct csid_device *csid; 662 663 if (media_entity_remote_pad(local)) 664 return -EBUSY; 665 666 sd = media_entity_to_v4l2_subdev(entity); 667 csiphy = v4l2_get_subdevdata(sd); 668 669 sd = media_entity_to_v4l2_subdev(remote->entity); 670 csid = v4l2_get_subdevdata(sd); 671 672 csiphy->cfg.csid_id = csid->id; 673 } 674 675 return 0; 676 } 677 678 static const struct v4l2_subdev_core_ops csiphy_core_ops = { 679 .s_power = csiphy_set_power, 680 }; 681 682 static const struct v4l2_subdev_video_ops csiphy_video_ops = { 683 .s_stream = csiphy_set_stream, 684 }; 685 686 static const struct v4l2_subdev_pad_ops csiphy_pad_ops = { 687 .enum_mbus_code = csiphy_enum_mbus_code, 688 .enum_frame_size = csiphy_enum_frame_size, 689 .get_fmt = csiphy_get_format, 690 .set_fmt = csiphy_set_format, 691 }; 692 693 static const struct v4l2_subdev_ops csiphy_v4l2_ops = { 694 .core = &csiphy_core_ops, 695 .video = &csiphy_video_ops, 696 .pad = &csiphy_pad_ops, 697 }; 698 699 static const struct v4l2_subdev_internal_ops csiphy_v4l2_internal_ops = { 700 .open = csiphy_init_formats, 701 }; 702 703 static const struct media_entity_operations csiphy_media_ops = { 704 .link_setup = csiphy_link_setup, 705 .link_validate = v4l2_subdev_link_validate, 706 }; 707 708 /* 709 * msm_csiphy_register_entity - Register subdev node for CSIPHY module 710 * @csiphy: CSIPHY device 711 * @v4l2_dev: V4L2 device 712 * 713 * Return 0 on success or a negative error code otherwise 714 */ 715 int msm_csiphy_register_entity(struct csiphy_device *csiphy, 716 struct v4l2_device *v4l2_dev) 717 { 718 struct v4l2_subdev *sd = &csiphy->subdev; 719 struct media_pad *pads = csiphy->pads; 720 struct device *dev = csiphy->camss->dev; 721 int ret; 722 723 v4l2_subdev_init(sd, &csiphy_v4l2_ops); 724 sd->internal_ops = &csiphy_v4l2_internal_ops; 725 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; 726 snprintf(sd->name, ARRAY_SIZE(sd->name), "%s%d", 727 MSM_CSIPHY_NAME, csiphy->id); 728 v4l2_set_subdevdata(sd, csiphy); 729 730 ret = csiphy_init_formats(sd, NULL); 731 if (ret < 0) { 732 dev_err(dev, "Failed to init format: %d\n", ret); 733 return ret; 734 } 735 736 pads[MSM_CSIPHY_PAD_SINK].flags = MEDIA_PAD_FL_SINK; 737 pads[MSM_CSIPHY_PAD_SRC].flags = MEDIA_PAD_FL_SOURCE; 738 739 sd->entity.function = MEDIA_ENT_F_IO_V4L; 740 sd->entity.ops = &csiphy_media_ops; 741 ret = media_entity_pads_init(&sd->entity, MSM_CSIPHY_PADS_NUM, pads); 742 if (ret < 0) { 743 dev_err(dev, "Failed to init media entity: %d\n", ret); 744 return ret; 745 } 746 747 ret = v4l2_device_register_subdev(v4l2_dev, sd); 748 if (ret < 0) { 749 dev_err(dev, "Failed to register subdev: %d\n", ret); 750 media_entity_cleanup(&sd->entity); 751 } 752 753 return ret; 754 } 755 756 /* 757 * msm_csiphy_unregister_entity - Unregister CSIPHY module subdev node 758 * @csiphy: CSIPHY device 759 */ 760 void msm_csiphy_unregister_entity(struct csiphy_device *csiphy) 761 { 762 v4l2_device_unregister_subdev(&csiphy->subdev); 763 media_entity_cleanup(&csiphy->subdev.entity); 764 } 765