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/io.h> 14 #include <linux/kernel.h> 15 #include <linux/of.h> 16 #include <linux/platform_device.h> 17 #include <linux/pm_runtime.h> 18 #include <media/media-entity.h> 19 #include <media/v4l2-device.h> 20 #include <media/v4l2-subdev.h> 21 22 #include "camss-csiphy.h" 23 #include "camss.h" 24 25 #define MSM_CSIPHY_NAME "msm_csiphy" 26 27 struct csiphy_format { 28 u32 code; 29 u8 bpp; 30 }; 31 32 static const struct csiphy_format csiphy_formats_8x16[] = { 33 { MEDIA_BUS_FMT_UYVY8_2X8, 8 }, 34 { MEDIA_BUS_FMT_VYUY8_2X8, 8 }, 35 { MEDIA_BUS_FMT_YUYV8_2X8, 8 }, 36 { MEDIA_BUS_FMT_YVYU8_2X8, 8 }, 37 { MEDIA_BUS_FMT_SBGGR8_1X8, 8 }, 38 { MEDIA_BUS_FMT_SGBRG8_1X8, 8 }, 39 { MEDIA_BUS_FMT_SGRBG8_1X8, 8 }, 40 { MEDIA_BUS_FMT_SRGGB8_1X8, 8 }, 41 { MEDIA_BUS_FMT_SBGGR10_1X10, 10 }, 42 { MEDIA_BUS_FMT_SGBRG10_1X10, 10 }, 43 { MEDIA_BUS_FMT_SGRBG10_1X10, 10 }, 44 { MEDIA_BUS_FMT_SRGGB10_1X10, 10 }, 45 { MEDIA_BUS_FMT_SBGGR12_1X12, 12 }, 46 { MEDIA_BUS_FMT_SGBRG12_1X12, 12 }, 47 { MEDIA_BUS_FMT_SGRBG12_1X12, 12 }, 48 { MEDIA_BUS_FMT_SRGGB12_1X12, 12 }, 49 { MEDIA_BUS_FMT_Y10_1X10, 10 }, 50 }; 51 52 static const struct csiphy_format csiphy_formats_8x96[] = { 53 { MEDIA_BUS_FMT_UYVY8_2X8, 8 }, 54 { MEDIA_BUS_FMT_VYUY8_2X8, 8 }, 55 { MEDIA_BUS_FMT_YUYV8_2X8, 8 }, 56 { MEDIA_BUS_FMT_YVYU8_2X8, 8 }, 57 { MEDIA_BUS_FMT_SBGGR8_1X8, 8 }, 58 { MEDIA_BUS_FMT_SGBRG8_1X8, 8 }, 59 { MEDIA_BUS_FMT_SGRBG8_1X8, 8 }, 60 { MEDIA_BUS_FMT_SRGGB8_1X8, 8 }, 61 { MEDIA_BUS_FMT_SBGGR10_1X10, 10 }, 62 { MEDIA_BUS_FMT_SGBRG10_1X10, 10 }, 63 { MEDIA_BUS_FMT_SGRBG10_1X10, 10 }, 64 { MEDIA_BUS_FMT_SRGGB10_1X10, 10 }, 65 { MEDIA_BUS_FMT_SBGGR12_1X12, 12 }, 66 { MEDIA_BUS_FMT_SGBRG12_1X12, 12 }, 67 { MEDIA_BUS_FMT_SGRBG12_1X12, 12 }, 68 { MEDIA_BUS_FMT_SRGGB12_1X12, 12 }, 69 { MEDIA_BUS_FMT_SBGGR14_1X14, 14 }, 70 { MEDIA_BUS_FMT_SGBRG14_1X14, 14 }, 71 { MEDIA_BUS_FMT_SGRBG14_1X14, 14 }, 72 { MEDIA_BUS_FMT_SRGGB14_1X14, 14 }, 73 { MEDIA_BUS_FMT_Y10_1X10, 10 }, 74 }; 75 76 /* 77 * csiphy_get_bpp - map media bus format to bits per pixel 78 * @formats: supported media bus formats array 79 * @nformats: size of @formats array 80 * @code: media bus format code 81 * 82 * Return number of bits per pixel 83 */ 84 static u8 csiphy_get_bpp(const struct csiphy_format *formats, 85 unsigned int nformats, u32 code) 86 { 87 unsigned int i; 88 89 for (i = 0; i < nformats; i++) 90 if (code == formats[i].code) 91 return formats[i].bpp; 92 93 WARN(1, "Unknown format\n"); 94 95 return formats[0].bpp; 96 } 97 98 /* 99 * csiphy_set_clock_rates - Calculate and set clock rates on CSIPHY module 100 * @csiphy: CSIPHY device 101 */ 102 static int csiphy_set_clock_rates(struct csiphy_device *csiphy) 103 { 104 struct device *dev = csiphy->camss->dev; 105 u32 pixel_clock; 106 int i, j; 107 int ret; 108 109 ret = camss_get_pixel_clock(&csiphy->subdev.entity, &pixel_clock); 110 if (ret) 111 pixel_clock = 0; 112 113 for (i = 0; i < csiphy->nclocks; i++) { 114 struct camss_clock *clock = &csiphy->clock[i]; 115 116 if (!strcmp(clock->name, "csiphy0_timer") || 117 !strcmp(clock->name, "csiphy1_timer") || 118 !strcmp(clock->name, "csiphy2_timer")) { 119 u8 bpp = csiphy_get_bpp(csiphy->formats, 120 csiphy->nformats, 121 csiphy->fmt[MSM_CSIPHY_PAD_SINK].code); 122 u8 num_lanes = csiphy->cfg.csi2->lane_cfg.num_data; 123 u64 min_rate = pixel_clock * bpp / (2 * num_lanes * 4); 124 long round_rate; 125 126 camss_add_clock_margin(&min_rate); 127 128 for (j = 0; j < clock->nfreqs; j++) 129 if (min_rate < clock->freq[j]) 130 break; 131 132 if (j == clock->nfreqs) { 133 dev_err(dev, 134 "Pixel clock is too high for CSIPHY\n"); 135 return -EINVAL; 136 } 137 138 /* if sensor pixel clock is not available */ 139 /* set highest possible CSIPHY clock rate */ 140 if (min_rate == 0) 141 j = clock->nfreqs - 1; 142 143 round_rate = clk_round_rate(clock->clk, clock->freq[j]); 144 if (round_rate < 0) { 145 dev_err(dev, "clk round rate failed: %ld\n", 146 round_rate); 147 return -EINVAL; 148 } 149 150 csiphy->timer_clk_rate = round_rate; 151 152 ret = clk_set_rate(clock->clk, csiphy->timer_clk_rate); 153 if (ret < 0) { 154 dev_err(dev, "clk set rate failed: %d\n", ret); 155 return ret; 156 } 157 } 158 } 159 160 return 0; 161 } 162 163 /* 164 * csiphy_set_power - Power on/off CSIPHY module 165 * @sd: CSIPHY V4L2 subdevice 166 * @on: Requested power state 167 * 168 * Return 0 on success or a negative error code otherwise 169 */ 170 static int csiphy_set_power(struct v4l2_subdev *sd, int on) 171 { 172 struct csiphy_device *csiphy = v4l2_get_subdevdata(sd); 173 struct device *dev = csiphy->camss->dev; 174 175 if (on) { 176 int ret; 177 178 ret = pm_runtime_get_sync(dev); 179 if (ret < 0) { 180 pm_runtime_put_sync(dev); 181 return ret; 182 } 183 184 ret = csiphy_set_clock_rates(csiphy); 185 if (ret < 0) { 186 pm_runtime_put_sync(dev); 187 return ret; 188 } 189 190 ret = camss_enable_clocks(csiphy->nclocks, csiphy->clock, dev); 191 if (ret < 0) { 192 pm_runtime_put_sync(dev); 193 return ret; 194 } 195 196 enable_irq(csiphy->irq); 197 198 csiphy->ops->reset(csiphy); 199 200 csiphy->ops->hw_version_read(csiphy, dev); 201 } else { 202 disable_irq(csiphy->irq); 203 204 camss_disable_clocks(csiphy->nclocks, csiphy->clock); 205 206 pm_runtime_put_sync(dev); 207 } 208 209 return 0; 210 } 211 212 /* 213 * csiphy_get_lane_mask - Calculate CSI2 lane mask configuration parameter 214 * @lane_cfg - CSI2 lane configuration 215 * 216 * Return lane mask 217 */ 218 static u8 csiphy_get_lane_mask(struct csiphy_lanes_cfg *lane_cfg) 219 { 220 u8 lane_mask; 221 int i; 222 223 lane_mask = 1 << lane_cfg->clk.pos; 224 225 for (i = 0; i < lane_cfg->num_data; i++) 226 lane_mask |= 1 << lane_cfg->data[i].pos; 227 228 return lane_mask; 229 } 230 231 /* 232 * csiphy_stream_on - Enable streaming on CSIPHY module 233 * @csiphy: CSIPHY device 234 * 235 * Helper function to enable streaming on CSIPHY module. 236 * Main configuration of CSIPHY module is also done here. 237 * 238 * Return 0 on success or a negative error code otherwise 239 */ 240 static int csiphy_stream_on(struct csiphy_device *csiphy) 241 { 242 struct csiphy_config *cfg = &csiphy->cfg; 243 u32 pixel_clock; 244 u8 lane_mask = csiphy_get_lane_mask(&cfg->csi2->lane_cfg); 245 u8 bpp = csiphy_get_bpp(csiphy->formats, csiphy->nformats, 246 csiphy->fmt[MSM_CSIPHY_PAD_SINK].code); 247 u8 val; 248 int ret; 249 250 ret = camss_get_pixel_clock(&csiphy->subdev.entity, &pixel_clock); 251 if (ret) { 252 dev_err(csiphy->camss->dev, 253 "Cannot get CSI2 transmitter's pixel clock\n"); 254 return -EINVAL; 255 } 256 if (!pixel_clock) { 257 dev_err(csiphy->camss->dev, 258 "Got pixel clock == 0, cannot continue\n"); 259 return -EINVAL; 260 } 261 262 val = readl_relaxed(csiphy->base_clk_mux); 263 if (cfg->combo_mode && (lane_mask & 0x18) == 0x18) { 264 val &= ~0xf0; 265 val |= cfg->csid_id << 4; 266 } else { 267 val &= ~0xf; 268 val |= cfg->csid_id; 269 } 270 writel_relaxed(val, csiphy->base_clk_mux); 271 wmb(); 272 273 csiphy->ops->lanes_enable(csiphy, cfg, pixel_clock, bpp, lane_mask); 274 275 return 0; 276 } 277 278 /* 279 * csiphy_stream_off - Disable streaming on CSIPHY module 280 * @csiphy: CSIPHY device 281 * 282 * Helper function to disable streaming on CSIPHY module 283 */ 284 static void csiphy_stream_off(struct csiphy_device *csiphy) 285 { 286 csiphy->ops->lanes_disable(csiphy, &csiphy->cfg); 287 } 288 289 290 /* 291 * csiphy_set_stream - Enable/disable streaming on CSIPHY module 292 * @sd: CSIPHY V4L2 subdevice 293 * @enable: Requested streaming state 294 * 295 * Return 0 on success or a negative error code otherwise 296 */ 297 static int csiphy_set_stream(struct v4l2_subdev *sd, int enable) 298 { 299 struct csiphy_device *csiphy = v4l2_get_subdevdata(sd); 300 int ret = 0; 301 302 if (enable) 303 ret = csiphy_stream_on(csiphy); 304 else 305 csiphy_stream_off(csiphy); 306 307 return ret; 308 } 309 310 /* 311 * __csiphy_get_format - Get pointer to format structure 312 * @csiphy: CSIPHY device 313 * @cfg: V4L2 subdev pad configuration 314 * @pad: pad from which format is requested 315 * @which: TRY or ACTIVE format 316 * 317 * Return pointer to TRY or ACTIVE format structure 318 */ 319 static struct v4l2_mbus_framefmt * 320 __csiphy_get_format(struct csiphy_device *csiphy, 321 struct v4l2_subdev_pad_config *cfg, 322 unsigned int pad, 323 enum v4l2_subdev_format_whence which) 324 { 325 if (which == V4L2_SUBDEV_FORMAT_TRY) 326 return v4l2_subdev_get_try_format(&csiphy->subdev, cfg, pad); 327 328 return &csiphy->fmt[pad]; 329 } 330 331 /* 332 * csiphy_try_format - Handle try format by pad subdev method 333 * @csiphy: CSIPHY device 334 * @cfg: V4L2 subdev pad configuration 335 * @pad: pad on which format is requested 336 * @fmt: pointer to v4l2 format structure 337 * @which: wanted subdev format 338 */ 339 static void csiphy_try_format(struct csiphy_device *csiphy, 340 struct v4l2_subdev_pad_config *cfg, 341 unsigned int pad, 342 struct v4l2_mbus_framefmt *fmt, 343 enum v4l2_subdev_format_whence which) 344 { 345 unsigned int i; 346 347 switch (pad) { 348 case MSM_CSIPHY_PAD_SINK: 349 /* Set format on sink pad */ 350 351 for (i = 0; i < csiphy->nformats; i++) 352 if (fmt->code == csiphy->formats[i].code) 353 break; 354 355 /* If not found, use UYVY as default */ 356 if (i >= csiphy->nformats) 357 fmt->code = MEDIA_BUS_FMT_UYVY8_2X8; 358 359 fmt->width = clamp_t(u32, fmt->width, 1, 8191); 360 fmt->height = clamp_t(u32, fmt->height, 1, 8191); 361 362 fmt->field = V4L2_FIELD_NONE; 363 fmt->colorspace = V4L2_COLORSPACE_SRGB; 364 365 break; 366 367 case MSM_CSIPHY_PAD_SRC: 368 /* Set and return a format same as sink pad */ 369 370 *fmt = *__csiphy_get_format(csiphy, cfg, MSM_CSID_PAD_SINK, 371 which); 372 373 break; 374 } 375 } 376 377 /* 378 * csiphy_enum_mbus_code - Handle pixel format enumeration 379 * @sd: CSIPHY V4L2 subdevice 380 * @cfg: V4L2 subdev pad configuration 381 * @code: pointer to v4l2_subdev_mbus_code_enum structure 382 * return -EINVAL or zero on success 383 */ 384 static int csiphy_enum_mbus_code(struct v4l2_subdev *sd, 385 struct v4l2_subdev_pad_config *cfg, 386 struct v4l2_subdev_mbus_code_enum *code) 387 { 388 struct csiphy_device *csiphy = v4l2_get_subdevdata(sd); 389 struct v4l2_mbus_framefmt *format; 390 391 if (code->pad == MSM_CSIPHY_PAD_SINK) { 392 if (code->index >= csiphy->nformats) 393 return -EINVAL; 394 395 code->code = csiphy->formats[code->index].code; 396 } else { 397 if (code->index > 0) 398 return -EINVAL; 399 400 format = __csiphy_get_format(csiphy, cfg, MSM_CSIPHY_PAD_SINK, 401 code->which); 402 403 code->code = format->code; 404 } 405 406 return 0; 407 } 408 409 /* 410 * csiphy_enum_frame_size - Handle frame size enumeration 411 * @sd: CSIPHY V4L2 subdevice 412 * @cfg: V4L2 subdev pad configuration 413 * @fse: pointer to v4l2_subdev_frame_size_enum structure 414 * return -EINVAL or zero on success 415 */ 416 static int csiphy_enum_frame_size(struct v4l2_subdev *sd, 417 struct v4l2_subdev_pad_config *cfg, 418 struct v4l2_subdev_frame_size_enum *fse) 419 { 420 struct csiphy_device *csiphy = v4l2_get_subdevdata(sd); 421 struct v4l2_mbus_framefmt format; 422 423 if (fse->index != 0) 424 return -EINVAL; 425 426 format.code = fse->code; 427 format.width = 1; 428 format.height = 1; 429 csiphy_try_format(csiphy, cfg, fse->pad, &format, fse->which); 430 fse->min_width = format.width; 431 fse->min_height = format.height; 432 433 if (format.code != fse->code) 434 return -EINVAL; 435 436 format.code = fse->code; 437 format.width = -1; 438 format.height = -1; 439 csiphy_try_format(csiphy, cfg, fse->pad, &format, fse->which); 440 fse->max_width = format.width; 441 fse->max_height = format.height; 442 443 return 0; 444 } 445 446 /* 447 * csiphy_get_format - Handle get format by pads subdev method 448 * @sd: CSIPHY V4L2 subdevice 449 * @cfg: V4L2 subdev pad configuration 450 * @fmt: pointer to v4l2 subdev format structure 451 * 452 * Return -EINVAL or zero on success 453 */ 454 static int csiphy_get_format(struct v4l2_subdev *sd, 455 struct v4l2_subdev_pad_config *cfg, 456 struct v4l2_subdev_format *fmt) 457 { 458 struct csiphy_device *csiphy = v4l2_get_subdevdata(sd); 459 struct v4l2_mbus_framefmt *format; 460 461 format = __csiphy_get_format(csiphy, cfg, fmt->pad, fmt->which); 462 if (format == NULL) 463 return -EINVAL; 464 465 fmt->format = *format; 466 467 return 0; 468 } 469 470 /* 471 * csiphy_set_format - Handle set format by pads subdev method 472 * @sd: CSIPHY V4L2 subdevice 473 * @cfg: V4L2 subdev pad configuration 474 * @fmt: pointer to v4l2 subdev format structure 475 * 476 * Return -EINVAL or zero on success 477 */ 478 static int csiphy_set_format(struct v4l2_subdev *sd, 479 struct v4l2_subdev_pad_config *cfg, 480 struct v4l2_subdev_format *fmt) 481 { 482 struct csiphy_device *csiphy = v4l2_get_subdevdata(sd); 483 struct v4l2_mbus_framefmt *format; 484 485 format = __csiphy_get_format(csiphy, cfg, fmt->pad, fmt->which); 486 if (format == NULL) 487 return -EINVAL; 488 489 csiphy_try_format(csiphy, cfg, fmt->pad, &fmt->format, fmt->which); 490 *format = fmt->format; 491 492 /* Propagate the format from sink to source */ 493 if (fmt->pad == MSM_CSIPHY_PAD_SINK) { 494 format = __csiphy_get_format(csiphy, cfg, MSM_CSIPHY_PAD_SRC, 495 fmt->which); 496 497 *format = fmt->format; 498 csiphy_try_format(csiphy, cfg, MSM_CSIPHY_PAD_SRC, format, 499 fmt->which); 500 } 501 502 return 0; 503 } 504 505 /* 506 * csiphy_init_formats - Initialize formats on all pads 507 * @sd: CSIPHY V4L2 subdevice 508 * @fh: V4L2 subdev file handle 509 * 510 * Initialize all pad formats with default values. 511 * 512 * Return 0 on success or a negative error code otherwise 513 */ 514 static int csiphy_init_formats(struct v4l2_subdev *sd, 515 struct v4l2_subdev_fh *fh) 516 { 517 struct v4l2_subdev_format format = { 518 .pad = MSM_CSIPHY_PAD_SINK, 519 .which = fh ? V4L2_SUBDEV_FORMAT_TRY : 520 V4L2_SUBDEV_FORMAT_ACTIVE, 521 .format = { 522 .code = MEDIA_BUS_FMT_UYVY8_2X8, 523 .width = 1920, 524 .height = 1080 525 } 526 }; 527 528 return csiphy_set_format(sd, fh ? fh->pad : NULL, &format); 529 } 530 531 /* 532 * msm_csiphy_subdev_init - Initialize CSIPHY device structure and resources 533 * @csiphy: CSIPHY device 534 * @res: CSIPHY module resources table 535 * @id: CSIPHY module id 536 * 537 * Return 0 on success or a negative error code otherwise 538 */ 539 int msm_csiphy_subdev_init(struct camss *camss, 540 struct csiphy_device *csiphy, 541 const struct resources *res, u8 id) 542 { 543 struct device *dev = camss->dev; 544 struct platform_device *pdev = to_platform_device(dev); 545 struct resource *r; 546 int i, j; 547 int ret; 548 549 csiphy->camss = camss; 550 csiphy->id = id; 551 csiphy->cfg.combo_mode = 0; 552 553 if (camss->version == CAMSS_8x16) { 554 csiphy->ops = &csiphy_ops_2ph_1_0; 555 csiphy->formats = csiphy_formats_8x16; 556 csiphy->nformats = ARRAY_SIZE(csiphy_formats_8x16); 557 } else if (camss->version == CAMSS_8x96) { 558 csiphy->ops = &csiphy_ops_3ph_1_0; 559 csiphy->formats = csiphy_formats_8x96; 560 csiphy->nformats = ARRAY_SIZE(csiphy_formats_8x96); 561 } else { 562 return -EINVAL; 563 } 564 565 /* Memory */ 566 567 r = platform_get_resource_byname(pdev, IORESOURCE_MEM, res->reg[0]); 568 csiphy->base = devm_ioremap_resource(dev, r); 569 if (IS_ERR(csiphy->base)) { 570 dev_err(dev, "could not map memory\n"); 571 return PTR_ERR(csiphy->base); 572 } 573 574 r = platform_get_resource_byname(pdev, IORESOURCE_MEM, res->reg[1]); 575 csiphy->base_clk_mux = devm_ioremap_resource(dev, r); 576 if (IS_ERR(csiphy->base_clk_mux)) { 577 dev_err(dev, "could not map memory\n"); 578 return PTR_ERR(csiphy->base_clk_mux); 579 } 580 581 /* Interrupt */ 582 583 r = platform_get_resource_byname(pdev, IORESOURCE_IRQ, 584 res->interrupt[0]); 585 if (!r) { 586 dev_err(dev, "missing IRQ\n"); 587 return -EINVAL; 588 } 589 590 csiphy->irq = r->start; 591 snprintf(csiphy->irq_name, sizeof(csiphy->irq_name), "%s_%s%d", 592 dev_name(dev), MSM_CSIPHY_NAME, csiphy->id); 593 594 ret = devm_request_irq(dev, csiphy->irq, csiphy->ops->isr, 595 IRQF_TRIGGER_RISING, csiphy->irq_name, csiphy); 596 if (ret < 0) { 597 dev_err(dev, "request_irq failed: %d\n", ret); 598 return ret; 599 } 600 601 disable_irq(csiphy->irq); 602 603 /* Clocks */ 604 605 csiphy->nclocks = 0; 606 while (res->clock[csiphy->nclocks]) 607 csiphy->nclocks++; 608 609 csiphy->clock = devm_kcalloc(dev, 610 csiphy->nclocks, sizeof(*csiphy->clock), 611 GFP_KERNEL); 612 if (!csiphy->clock) 613 return -ENOMEM; 614 615 for (i = 0; i < csiphy->nclocks; i++) { 616 struct camss_clock *clock = &csiphy->clock[i]; 617 618 clock->clk = devm_clk_get(dev, res->clock[i]); 619 if (IS_ERR(clock->clk)) 620 return PTR_ERR(clock->clk); 621 622 clock->name = res->clock[i]; 623 624 clock->nfreqs = 0; 625 while (res->clock_rate[i][clock->nfreqs]) 626 clock->nfreqs++; 627 628 if (!clock->nfreqs) { 629 clock->freq = NULL; 630 continue; 631 } 632 633 clock->freq = devm_kcalloc(dev, 634 clock->nfreqs, 635 sizeof(*clock->freq), 636 GFP_KERNEL); 637 if (!clock->freq) 638 return -ENOMEM; 639 640 for (j = 0; j < clock->nfreqs; j++) 641 clock->freq[j] = res->clock_rate[i][j]; 642 } 643 644 return 0; 645 } 646 647 /* 648 * csiphy_link_setup - Setup CSIPHY connections 649 * @entity: Pointer to media entity structure 650 * @local: Pointer to local pad 651 * @remote: Pointer to remote pad 652 * @flags: Link flags 653 * 654 * Rreturn 0 on success 655 */ 656 static int csiphy_link_setup(struct media_entity *entity, 657 const struct media_pad *local, 658 const struct media_pad *remote, u32 flags) 659 { 660 if ((local->flags & MEDIA_PAD_FL_SOURCE) && 661 (flags & MEDIA_LNK_FL_ENABLED)) { 662 struct v4l2_subdev *sd; 663 struct csiphy_device *csiphy; 664 struct csid_device *csid; 665 666 if (media_entity_remote_pad(local)) 667 return -EBUSY; 668 669 sd = media_entity_to_v4l2_subdev(entity); 670 csiphy = v4l2_get_subdevdata(sd); 671 672 sd = media_entity_to_v4l2_subdev(remote->entity); 673 csid = v4l2_get_subdevdata(sd); 674 675 csiphy->cfg.csid_id = csid->id; 676 } 677 678 return 0; 679 } 680 681 static const struct v4l2_subdev_core_ops csiphy_core_ops = { 682 .s_power = csiphy_set_power, 683 }; 684 685 static const struct v4l2_subdev_video_ops csiphy_video_ops = { 686 .s_stream = csiphy_set_stream, 687 }; 688 689 static const struct v4l2_subdev_pad_ops csiphy_pad_ops = { 690 .enum_mbus_code = csiphy_enum_mbus_code, 691 .enum_frame_size = csiphy_enum_frame_size, 692 .get_fmt = csiphy_get_format, 693 .set_fmt = csiphy_set_format, 694 }; 695 696 static const struct v4l2_subdev_ops csiphy_v4l2_ops = { 697 .core = &csiphy_core_ops, 698 .video = &csiphy_video_ops, 699 .pad = &csiphy_pad_ops, 700 }; 701 702 static const struct v4l2_subdev_internal_ops csiphy_v4l2_internal_ops = { 703 .open = csiphy_init_formats, 704 }; 705 706 static const struct media_entity_operations csiphy_media_ops = { 707 .link_setup = csiphy_link_setup, 708 .link_validate = v4l2_subdev_link_validate, 709 }; 710 711 /* 712 * msm_csiphy_register_entity - Register subdev node for CSIPHY module 713 * @csiphy: CSIPHY device 714 * @v4l2_dev: V4L2 device 715 * 716 * Return 0 on success or a negative error code otherwise 717 */ 718 int msm_csiphy_register_entity(struct csiphy_device *csiphy, 719 struct v4l2_device *v4l2_dev) 720 { 721 struct v4l2_subdev *sd = &csiphy->subdev; 722 struct media_pad *pads = csiphy->pads; 723 struct device *dev = csiphy->camss->dev; 724 int ret; 725 726 v4l2_subdev_init(sd, &csiphy_v4l2_ops); 727 sd->internal_ops = &csiphy_v4l2_internal_ops; 728 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; 729 snprintf(sd->name, ARRAY_SIZE(sd->name), "%s%d", 730 MSM_CSIPHY_NAME, csiphy->id); 731 v4l2_set_subdevdata(sd, csiphy); 732 733 ret = csiphy_init_formats(sd, NULL); 734 if (ret < 0) { 735 dev_err(dev, "Failed to init format: %d\n", ret); 736 return ret; 737 } 738 739 pads[MSM_CSIPHY_PAD_SINK].flags = MEDIA_PAD_FL_SINK; 740 pads[MSM_CSIPHY_PAD_SRC].flags = MEDIA_PAD_FL_SOURCE; 741 742 sd->entity.function = MEDIA_ENT_F_PROC_VIDEO_PIXEL_FORMATTER; 743 sd->entity.ops = &csiphy_media_ops; 744 ret = media_entity_pads_init(&sd->entity, MSM_CSIPHY_PADS_NUM, pads); 745 if (ret < 0) { 746 dev_err(dev, "Failed to init media entity: %d\n", ret); 747 return ret; 748 } 749 750 ret = v4l2_device_register_subdev(v4l2_dev, sd); 751 if (ret < 0) { 752 dev_err(dev, "Failed to register subdev: %d\n", ret); 753 media_entity_cleanup(&sd->entity); 754 } 755 756 return ret; 757 } 758 759 /* 760 * msm_csiphy_unregister_entity - Unregister CSIPHY module subdev node 761 * @csiphy: CSIPHY device 762 */ 763 void msm_csiphy_unregister_entity(struct csiphy_device *csiphy) 764 { 765 v4l2_device_unregister_subdev(&csiphy->subdev); 766 media_entity_cleanup(&csiphy->subdev.entity); 767 } 768