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 return ret; 181 182 ret = csiphy_set_clock_rates(csiphy); 183 if (ret < 0) { 184 pm_runtime_put_sync(dev); 185 return ret; 186 } 187 188 ret = camss_enable_clocks(csiphy->nclocks, csiphy->clock, dev); 189 if (ret < 0) { 190 pm_runtime_put_sync(dev); 191 return ret; 192 } 193 194 enable_irq(csiphy->irq); 195 196 csiphy->ops->reset(csiphy); 197 198 csiphy->ops->hw_version_read(csiphy, dev); 199 } else { 200 disable_irq(csiphy->irq); 201 202 camss_disable_clocks(csiphy->nclocks, csiphy->clock); 203 204 pm_runtime_put_sync(dev); 205 } 206 207 return 0; 208 } 209 210 /* 211 * csiphy_get_lane_mask - Calculate CSI2 lane mask configuration parameter 212 * @lane_cfg - CSI2 lane configuration 213 * 214 * Return lane mask 215 */ 216 static u8 csiphy_get_lane_mask(struct csiphy_lanes_cfg *lane_cfg) 217 { 218 u8 lane_mask; 219 int i; 220 221 lane_mask = 1 << lane_cfg->clk.pos; 222 223 for (i = 0; i < lane_cfg->num_data; i++) 224 lane_mask |= 1 << lane_cfg->data[i].pos; 225 226 return lane_mask; 227 } 228 229 /* 230 * csiphy_stream_on - Enable streaming on CSIPHY module 231 * @csiphy: CSIPHY device 232 * 233 * Helper function to enable streaming on CSIPHY module. 234 * Main configuration of CSIPHY module is also done here. 235 * 236 * Return 0 on success or a negative error code otherwise 237 */ 238 static int csiphy_stream_on(struct csiphy_device *csiphy) 239 { 240 struct csiphy_config *cfg = &csiphy->cfg; 241 u32 pixel_clock; 242 u8 lane_mask = csiphy_get_lane_mask(&cfg->csi2->lane_cfg); 243 u8 bpp = csiphy_get_bpp(csiphy->formats, csiphy->nformats, 244 csiphy->fmt[MSM_CSIPHY_PAD_SINK].code); 245 u8 val; 246 int ret; 247 248 ret = camss_get_pixel_clock(&csiphy->subdev.entity, &pixel_clock); 249 if (ret) { 250 dev_err(csiphy->camss->dev, 251 "Cannot get CSI2 transmitter's pixel clock\n"); 252 return -EINVAL; 253 } 254 if (!pixel_clock) { 255 dev_err(csiphy->camss->dev, 256 "Got pixel clock == 0, cannot continue\n"); 257 return -EINVAL; 258 } 259 260 val = readl_relaxed(csiphy->base_clk_mux); 261 if (cfg->combo_mode && (lane_mask & 0x18) == 0x18) { 262 val &= ~0xf0; 263 val |= cfg->csid_id << 4; 264 } else { 265 val &= ~0xf; 266 val |= cfg->csid_id; 267 } 268 writel_relaxed(val, csiphy->base_clk_mux); 269 wmb(); 270 271 csiphy->ops->lanes_enable(csiphy, cfg, pixel_clock, bpp, lane_mask); 272 273 return 0; 274 } 275 276 /* 277 * csiphy_stream_off - Disable streaming on CSIPHY module 278 * @csiphy: CSIPHY device 279 * 280 * Helper function to disable streaming on CSIPHY module 281 */ 282 static void csiphy_stream_off(struct csiphy_device *csiphy) 283 { 284 csiphy->ops->lanes_disable(csiphy, &csiphy->cfg); 285 } 286 287 288 /* 289 * csiphy_set_stream - Enable/disable streaming on CSIPHY module 290 * @sd: CSIPHY V4L2 subdevice 291 * @enable: Requested streaming state 292 * 293 * Return 0 on success or a negative error code otherwise 294 */ 295 static int csiphy_set_stream(struct v4l2_subdev *sd, int enable) 296 { 297 struct csiphy_device *csiphy = v4l2_get_subdevdata(sd); 298 int ret = 0; 299 300 if (enable) 301 ret = csiphy_stream_on(csiphy); 302 else 303 csiphy_stream_off(csiphy); 304 305 return ret; 306 } 307 308 /* 309 * __csiphy_get_format - Get pointer to format structure 310 * @csiphy: CSIPHY device 311 * @cfg: V4L2 subdev pad configuration 312 * @pad: pad from which format is requested 313 * @which: TRY or ACTIVE format 314 * 315 * Return pointer to TRY or ACTIVE format structure 316 */ 317 static struct v4l2_mbus_framefmt * 318 __csiphy_get_format(struct csiphy_device *csiphy, 319 struct v4l2_subdev_pad_config *cfg, 320 unsigned int pad, 321 enum v4l2_subdev_format_whence which) 322 { 323 if (which == V4L2_SUBDEV_FORMAT_TRY) 324 return v4l2_subdev_get_try_format(&csiphy->subdev, cfg, pad); 325 326 return &csiphy->fmt[pad]; 327 } 328 329 /* 330 * csiphy_try_format - Handle try format by pad subdev method 331 * @csiphy: CSIPHY device 332 * @cfg: V4L2 subdev pad configuration 333 * @pad: pad on which format is requested 334 * @fmt: pointer to v4l2 format structure 335 * @which: wanted subdev format 336 */ 337 static void csiphy_try_format(struct csiphy_device *csiphy, 338 struct v4l2_subdev_pad_config *cfg, 339 unsigned int pad, 340 struct v4l2_mbus_framefmt *fmt, 341 enum v4l2_subdev_format_whence which) 342 { 343 unsigned int i; 344 345 switch (pad) { 346 case MSM_CSIPHY_PAD_SINK: 347 /* Set format on sink pad */ 348 349 for (i = 0; i < csiphy->nformats; i++) 350 if (fmt->code == csiphy->formats[i].code) 351 break; 352 353 /* If not found, use UYVY as default */ 354 if (i >= csiphy->nformats) 355 fmt->code = MEDIA_BUS_FMT_UYVY8_2X8; 356 357 fmt->width = clamp_t(u32, fmt->width, 1, 8191); 358 fmt->height = clamp_t(u32, fmt->height, 1, 8191); 359 360 fmt->field = V4L2_FIELD_NONE; 361 fmt->colorspace = V4L2_COLORSPACE_SRGB; 362 363 break; 364 365 case MSM_CSIPHY_PAD_SRC: 366 /* Set and return a format same as sink pad */ 367 368 *fmt = *__csiphy_get_format(csiphy, cfg, MSM_CSID_PAD_SINK, 369 which); 370 371 break; 372 } 373 } 374 375 /* 376 * csiphy_enum_mbus_code - Handle pixel format enumeration 377 * @sd: CSIPHY V4L2 subdevice 378 * @cfg: V4L2 subdev pad configuration 379 * @code: pointer to v4l2_subdev_mbus_code_enum structure 380 * return -EINVAL or zero on success 381 */ 382 static int csiphy_enum_mbus_code(struct v4l2_subdev *sd, 383 struct v4l2_subdev_pad_config *cfg, 384 struct v4l2_subdev_mbus_code_enum *code) 385 { 386 struct csiphy_device *csiphy = v4l2_get_subdevdata(sd); 387 struct v4l2_mbus_framefmt *format; 388 389 if (code->pad == MSM_CSIPHY_PAD_SINK) { 390 if (code->index >= csiphy->nformats) 391 return -EINVAL; 392 393 code->code = csiphy->formats[code->index].code; 394 } else { 395 if (code->index > 0) 396 return -EINVAL; 397 398 format = __csiphy_get_format(csiphy, cfg, MSM_CSIPHY_PAD_SINK, 399 code->which); 400 401 code->code = format->code; 402 } 403 404 return 0; 405 } 406 407 /* 408 * csiphy_enum_frame_size - Handle frame size enumeration 409 * @sd: CSIPHY V4L2 subdevice 410 * @cfg: V4L2 subdev pad configuration 411 * @fse: pointer to v4l2_subdev_frame_size_enum structure 412 * return -EINVAL or zero on success 413 */ 414 static int csiphy_enum_frame_size(struct v4l2_subdev *sd, 415 struct v4l2_subdev_pad_config *cfg, 416 struct v4l2_subdev_frame_size_enum *fse) 417 { 418 struct csiphy_device *csiphy = v4l2_get_subdevdata(sd); 419 struct v4l2_mbus_framefmt format; 420 421 if (fse->index != 0) 422 return -EINVAL; 423 424 format.code = fse->code; 425 format.width = 1; 426 format.height = 1; 427 csiphy_try_format(csiphy, cfg, fse->pad, &format, fse->which); 428 fse->min_width = format.width; 429 fse->min_height = format.height; 430 431 if (format.code != fse->code) 432 return -EINVAL; 433 434 format.code = fse->code; 435 format.width = -1; 436 format.height = -1; 437 csiphy_try_format(csiphy, cfg, fse->pad, &format, fse->which); 438 fse->max_width = format.width; 439 fse->max_height = format.height; 440 441 return 0; 442 } 443 444 /* 445 * csiphy_get_format - Handle get format by pads subdev method 446 * @sd: CSIPHY V4L2 subdevice 447 * @cfg: V4L2 subdev pad configuration 448 * @fmt: pointer to v4l2 subdev format structure 449 * 450 * Return -EINVAL or zero on success 451 */ 452 static int csiphy_get_format(struct v4l2_subdev *sd, 453 struct v4l2_subdev_pad_config *cfg, 454 struct v4l2_subdev_format *fmt) 455 { 456 struct csiphy_device *csiphy = v4l2_get_subdevdata(sd); 457 struct v4l2_mbus_framefmt *format; 458 459 format = __csiphy_get_format(csiphy, cfg, fmt->pad, fmt->which); 460 if (format == NULL) 461 return -EINVAL; 462 463 fmt->format = *format; 464 465 return 0; 466 } 467 468 /* 469 * csiphy_set_format - Handle set format by pads subdev method 470 * @sd: CSIPHY V4L2 subdevice 471 * @cfg: V4L2 subdev pad configuration 472 * @fmt: pointer to v4l2 subdev format structure 473 * 474 * Return -EINVAL or zero on success 475 */ 476 static int csiphy_set_format(struct v4l2_subdev *sd, 477 struct v4l2_subdev_pad_config *cfg, 478 struct v4l2_subdev_format *fmt) 479 { 480 struct csiphy_device *csiphy = v4l2_get_subdevdata(sd); 481 struct v4l2_mbus_framefmt *format; 482 483 format = __csiphy_get_format(csiphy, cfg, fmt->pad, fmt->which); 484 if (format == NULL) 485 return -EINVAL; 486 487 csiphy_try_format(csiphy, cfg, fmt->pad, &fmt->format, fmt->which); 488 *format = fmt->format; 489 490 /* Propagate the format from sink to source */ 491 if (fmt->pad == MSM_CSIPHY_PAD_SINK) { 492 format = __csiphy_get_format(csiphy, cfg, MSM_CSIPHY_PAD_SRC, 493 fmt->which); 494 495 *format = fmt->format; 496 csiphy_try_format(csiphy, cfg, MSM_CSIPHY_PAD_SRC, format, 497 fmt->which); 498 } 499 500 return 0; 501 } 502 503 /* 504 * csiphy_init_formats - Initialize formats on all pads 505 * @sd: CSIPHY V4L2 subdevice 506 * @fh: V4L2 subdev file handle 507 * 508 * Initialize all pad formats with default values. 509 * 510 * Return 0 on success or a negative error code otherwise 511 */ 512 static int csiphy_init_formats(struct v4l2_subdev *sd, 513 struct v4l2_subdev_fh *fh) 514 { 515 struct v4l2_subdev_format format = { 516 .pad = MSM_CSIPHY_PAD_SINK, 517 .which = fh ? V4L2_SUBDEV_FORMAT_TRY : 518 V4L2_SUBDEV_FORMAT_ACTIVE, 519 .format = { 520 .code = MEDIA_BUS_FMT_UYVY8_2X8, 521 .width = 1920, 522 .height = 1080 523 } 524 }; 525 526 return csiphy_set_format(sd, fh ? fh->pad : NULL, &format); 527 } 528 529 /* 530 * msm_csiphy_subdev_init - Initialize CSIPHY device structure and resources 531 * @csiphy: CSIPHY device 532 * @res: CSIPHY module resources table 533 * @id: CSIPHY module id 534 * 535 * Return 0 on success or a negative error code otherwise 536 */ 537 int msm_csiphy_subdev_init(struct camss *camss, 538 struct csiphy_device *csiphy, 539 const struct resources *res, u8 id) 540 { 541 struct device *dev = camss->dev; 542 struct platform_device *pdev = to_platform_device(dev); 543 struct resource *r; 544 int i, j; 545 int ret; 546 547 csiphy->camss = camss; 548 csiphy->id = id; 549 csiphy->cfg.combo_mode = 0; 550 551 if (camss->version == CAMSS_8x16) { 552 csiphy->ops = &csiphy_ops_2ph_1_0; 553 csiphy->formats = csiphy_formats_8x16; 554 csiphy->nformats = ARRAY_SIZE(csiphy_formats_8x16); 555 } else if (camss->version == CAMSS_8x96) { 556 csiphy->ops = &csiphy_ops_3ph_1_0; 557 csiphy->formats = csiphy_formats_8x96; 558 csiphy->nformats = ARRAY_SIZE(csiphy_formats_8x96); 559 } else { 560 return -EINVAL; 561 } 562 563 /* Memory */ 564 565 r = platform_get_resource_byname(pdev, IORESOURCE_MEM, res->reg[0]); 566 csiphy->base = devm_ioremap_resource(dev, r); 567 if (IS_ERR(csiphy->base)) { 568 dev_err(dev, "could not map memory\n"); 569 return PTR_ERR(csiphy->base); 570 } 571 572 r = platform_get_resource_byname(pdev, IORESOURCE_MEM, res->reg[1]); 573 csiphy->base_clk_mux = devm_ioremap_resource(dev, r); 574 if (IS_ERR(csiphy->base_clk_mux)) { 575 dev_err(dev, "could not map memory\n"); 576 return PTR_ERR(csiphy->base_clk_mux); 577 } 578 579 /* Interrupt */ 580 581 r = platform_get_resource_byname(pdev, IORESOURCE_IRQ, 582 res->interrupt[0]); 583 if (!r) { 584 dev_err(dev, "missing IRQ\n"); 585 return -EINVAL; 586 } 587 588 csiphy->irq = r->start; 589 snprintf(csiphy->irq_name, sizeof(csiphy->irq_name), "%s_%s%d", 590 dev_name(dev), MSM_CSIPHY_NAME, csiphy->id); 591 592 ret = devm_request_irq(dev, csiphy->irq, csiphy->ops->isr, 593 IRQF_TRIGGER_RISING, csiphy->irq_name, csiphy); 594 if (ret < 0) { 595 dev_err(dev, "request_irq failed: %d\n", ret); 596 return ret; 597 } 598 599 disable_irq(csiphy->irq); 600 601 /* Clocks */ 602 603 csiphy->nclocks = 0; 604 while (res->clock[csiphy->nclocks]) 605 csiphy->nclocks++; 606 607 csiphy->clock = devm_kcalloc(dev, 608 csiphy->nclocks, sizeof(*csiphy->clock), 609 GFP_KERNEL); 610 if (!csiphy->clock) 611 return -ENOMEM; 612 613 for (i = 0; i < csiphy->nclocks; i++) { 614 struct camss_clock *clock = &csiphy->clock[i]; 615 616 clock->clk = devm_clk_get(dev, res->clock[i]); 617 if (IS_ERR(clock->clk)) 618 return PTR_ERR(clock->clk); 619 620 clock->name = res->clock[i]; 621 622 clock->nfreqs = 0; 623 while (res->clock_rate[i][clock->nfreqs]) 624 clock->nfreqs++; 625 626 if (!clock->nfreqs) { 627 clock->freq = NULL; 628 continue; 629 } 630 631 clock->freq = devm_kcalloc(dev, 632 clock->nfreqs, 633 sizeof(*clock->freq), 634 GFP_KERNEL); 635 if (!clock->freq) 636 return -ENOMEM; 637 638 for (j = 0; j < clock->nfreqs; j++) 639 clock->freq[j] = res->clock_rate[i][j]; 640 } 641 642 return 0; 643 } 644 645 /* 646 * csiphy_link_setup - Setup CSIPHY connections 647 * @entity: Pointer to media entity structure 648 * @local: Pointer to local pad 649 * @remote: Pointer to remote pad 650 * @flags: Link flags 651 * 652 * Rreturn 0 on success 653 */ 654 static int csiphy_link_setup(struct media_entity *entity, 655 const struct media_pad *local, 656 const struct media_pad *remote, u32 flags) 657 { 658 if ((local->flags & MEDIA_PAD_FL_SOURCE) && 659 (flags & MEDIA_LNK_FL_ENABLED)) { 660 struct v4l2_subdev *sd; 661 struct csiphy_device *csiphy; 662 struct csid_device *csid; 663 664 if (media_entity_remote_pad(local)) 665 return -EBUSY; 666 667 sd = media_entity_to_v4l2_subdev(entity); 668 csiphy = v4l2_get_subdevdata(sd); 669 670 sd = media_entity_to_v4l2_subdev(remote->entity); 671 csid = v4l2_get_subdevdata(sd); 672 673 csiphy->cfg.csid_id = csid->id; 674 } 675 676 return 0; 677 } 678 679 static const struct v4l2_subdev_core_ops csiphy_core_ops = { 680 .s_power = csiphy_set_power, 681 }; 682 683 static const struct v4l2_subdev_video_ops csiphy_video_ops = { 684 .s_stream = csiphy_set_stream, 685 }; 686 687 static const struct v4l2_subdev_pad_ops csiphy_pad_ops = { 688 .enum_mbus_code = csiphy_enum_mbus_code, 689 .enum_frame_size = csiphy_enum_frame_size, 690 .get_fmt = csiphy_get_format, 691 .set_fmt = csiphy_set_format, 692 }; 693 694 static const struct v4l2_subdev_ops csiphy_v4l2_ops = { 695 .core = &csiphy_core_ops, 696 .video = &csiphy_video_ops, 697 .pad = &csiphy_pad_ops, 698 }; 699 700 static const struct v4l2_subdev_internal_ops csiphy_v4l2_internal_ops = { 701 .open = csiphy_init_formats, 702 }; 703 704 static const struct media_entity_operations csiphy_media_ops = { 705 .link_setup = csiphy_link_setup, 706 .link_validate = v4l2_subdev_link_validate, 707 }; 708 709 /* 710 * msm_csiphy_register_entity - Register subdev node for CSIPHY module 711 * @csiphy: CSIPHY device 712 * @v4l2_dev: V4L2 device 713 * 714 * Return 0 on success or a negative error code otherwise 715 */ 716 int msm_csiphy_register_entity(struct csiphy_device *csiphy, 717 struct v4l2_device *v4l2_dev) 718 { 719 struct v4l2_subdev *sd = &csiphy->subdev; 720 struct media_pad *pads = csiphy->pads; 721 struct device *dev = csiphy->camss->dev; 722 int ret; 723 724 v4l2_subdev_init(sd, &csiphy_v4l2_ops); 725 sd->internal_ops = &csiphy_v4l2_internal_ops; 726 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; 727 snprintf(sd->name, ARRAY_SIZE(sd->name), "%s%d", 728 MSM_CSIPHY_NAME, csiphy->id); 729 v4l2_set_subdevdata(sd, csiphy); 730 731 ret = csiphy_init_formats(sd, NULL); 732 if (ret < 0) { 733 dev_err(dev, "Failed to init format: %d\n", ret); 734 return ret; 735 } 736 737 pads[MSM_CSIPHY_PAD_SINK].flags = MEDIA_PAD_FL_SINK; 738 pads[MSM_CSIPHY_PAD_SRC].flags = MEDIA_PAD_FL_SOURCE; 739 740 sd->entity.function = MEDIA_ENT_F_IO_V4L; 741 sd->entity.ops = &csiphy_media_ops; 742 ret = media_entity_pads_init(&sd->entity, MSM_CSIPHY_PADS_NUM, pads); 743 if (ret < 0) { 744 dev_err(dev, "Failed to init media entity: %d\n", ret); 745 return ret; 746 } 747 748 ret = v4l2_device_register_subdev(v4l2_dev, sd); 749 if (ret < 0) { 750 dev_err(dev, "Failed to register subdev: %d\n", ret); 751 media_entity_cleanup(&sd->entity); 752 } 753 754 return ret; 755 } 756 757 /* 758 * msm_csiphy_unregister_entity - Unregister CSIPHY module subdev node 759 * @csiphy: CSIPHY device 760 */ 761 void msm_csiphy_unregister_entity(struct csiphy_device *csiphy) 762 { 763 v4l2_device_unregister_subdev(&csiphy->subdev); 764 media_entity_cleanup(&csiphy->subdev.entity); 765 } 766