1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Samsung EXYNOS FIMC-LITE (camera host interface) driver 4 * 5 * Copyright (C) 2012 - 2013 Samsung Electronics Co., Ltd. 6 * Author: Sylwester Nawrocki <s.nawrocki@samsung.com> 7 */ 8 #define pr_fmt(fmt) "%s:%d " fmt, __func__, __LINE__ 9 10 #include <linux/bug.h> 11 #include <linux/clk.h> 12 #include <linux/device.h> 13 #include <linux/errno.h> 14 #include <linux/interrupt.h> 15 #include <linux/kernel.h> 16 #include <linux/list.h> 17 #include <linux/module.h> 18 #include <linux/of.h> 19 #include <linux/types.h> 20 #include <linux/platform_device.h> 21 #include <linux/pm_runtime.h> 22 #include <linux/slab.h> 23 #include <linux/videodev2.h> 24 25 #include <media/v4l2-device.h> 26 #include <media/v4l2-ioctl.h> 27 #include <media/v4l2-mem2mem.h> 28 #include <media/v4l2-rect.h> 29 #include <media/videobuf2-v4l2.h> 30 #include <media/videobuf2-dma-contig.h> 31 #include <media/drv-intf/exynos-fimc.h> 32 33 #include "common.h" 34 #include "fimc-core.h" 35 #include "fimc-lite.h" 36 #include "fimc-lite-reg.h" 37 38 static int debug; 39 module_param(debug, int, 0644); 40 41 static const struct fimc_fmt fimc_lite_formats[] = { 42 { 43 .fourcc = V4L2_PIX_FMT_YUYV, 44 .colorspace = V4L2_COLORSPACE_JPEG, 45 .depth = { 16 }, 46 .color = FIMC_FMT_YCBYCR422, 47 .memplanes = 1, 48 .mbus_code = MEDIA_BUS_FMT_YUYV8_2X8, 49 .flags = FMT_FLAGS_YUV, 50 }, { 51 .fourcc = V4L2_PIX_FMT_UYVY, 52 .colorspace = V4L2_COLORSPACE_JPEG, 53 .depth = { 16 }, 54 .color = FIMC_FMT_CBYCRY422, 55 .memplanes = 1, 56 .mbus_code = MEDIA_BUS_FMT_UYVY8_2X8, 57 .flags = FMT_FLAGS_YUV, 58 }, { 59 .fourcc = V4L2_PIX_FMT_VYUY, 60 .colorspace = V4L2_COLORSPACE_JPEG, 61 .depth = { 16 }, 62 .color = FIMC_FMT_CRYCBY422, 63 .memplanes = 1, 64 .mbus_code = MEDIA_BUS_FMT_VYUY8_2X8, 65 .flags = FMT_FLAGS_YUV, 66 }, { 67 .fourcc = V4L2_PIX_FMT_YVYU, 68 .colorspace = V4L2_COLORSPACE_JPEG, 69 .depth = { 16 }, 70 .color = FIMC_FMT_YCRYCB422, 71 .memplanes = 1, 72 .mbus_code = MEDIA_BUS_FMT_YVYU8_2X8, 73 .flags = FMT_FLAGS_YUV, 74 }, { 75 .fourcc = V4L2_PIX_FMT_SGRBG8, 76 .colorspace = V4L2_COLORSPACE_SRGB, 77 .depth = { 8 }, 78 .color = FIMC_FMT_RAW8, 79 .memplanes = 1, 80 .mbus_code = MEDIA_BUS_FMT_SGRBG8_1X8, 81 .flags = FMT_FLAGS_RAW_BAYER, 82 }, { 83 .fourcc = V4L2_PIX_FMT_SGRBG10, 84 .colorspace = V4L2_COLORSPACE_SRGB, 85 .depth = { 16 }, 86 .color = FIMC_FMT_RAW10, 87 .memplanes = 1, 88 .mbus_code = MEDIA_BUS_FMT_SGRBG10_1X10, 89 .flags = FMT_FLAGS_RAW_BAYER, 90 }, { 91 .fourcc = V4L2_PIX_FMT_SGRBG12, 92 .colorspace = V4L2_COLORSPACE_SRGB, 93 .depth = { 16 }, 94 .color = FIMC_FMT_RAW12, 95 .memplanes = 1, 96 .mbus_code = MEDIA_BUS_FMT_SGRBG12_1X12, 97 .flags = FMT_FLAGS_RAW_BAYER, 98 }, 99 }; 100 101 /** 102 * fimc_lite_find_format - lookup fimc color format by fourcc or media bus code 103 * @pixelformat: fourcc to match, ignored if null 104 * @mbus_code: media bus code to match, ignored if null 105 * @mask: the color format flags to match 106 * @index: index to the fimc_lite_formats array, ignored if negative 107 */ 108 static const struct fimc_fmt *fimc_lite_find_format(const u32 *pixelformat, 109 const u32 *mbus_code, unsigned int mask, int index) 110 { 111 const struct fimc_fmt *fmt, *def_fmt = NULL; 112 unsigned int i; 113 int id = 0; 114 115 if (index >= (int)ARRAY_SIZE(fimc_lite_formats)) 116 return NULL; 117 118 for (i = 0; i < ARRAY_SIZE(fimc_lite_formats); ++i) { 119 fmt = &fimc_lite_formats[i]; 120 if (mask && !(fmt->flags & mask)) 121 continue; 122 if (pixelformat && fmt->fourcc == *pixelformat) 123 return fmt; 124 if (mbus_code && fmt->mbus_code == *mbus_code) 125 return fmt; 126 if (index == id) 127 def_fmt = fmt; 128 id++; 129 } 130 return def_fmt; 131 } 132 133 static int fimc_lite_hw_init(struct fimc_lite *fimc, bool isp_output) 134 { 135 struct fimc_source_info *si; 136 unsigned long flags; 137 138 if (fimc->sensor == NULL) 139 return -ENXIO; 140 141 if (fimc->inp_frame.fmt == NULL || fimc->out_frame.fmt == NULL) 142 return -EINVAL; 143 144 /* Get sensor configuration data from the sensor subdev */ 145 si = v4l2_get_subdev_hostdata(fimc->sensor); 146 if (!si) 147 return -EINVAL; 148 149 spin_lock_irqsave(&fimc->slock, flags); 150 151 flite_hw_set_camera_bus(fimc, si); 152 flite_hw_set_source_format(fimc, &fimc->inp_frame); 153 flite_hw_set_window_offset(fimc, &fimc->inp_frame); 154 flite_hw_set_dma_buf_mask(fimc, 0); 155 flite_hw_set_output_dma(fimc, &fimc->out_frame, !isp_output); 156 flite_hw_set_interrupt_mask(fimc); 157 flite_hw_set_test_pattern(fimc, fimc->test_pattern->val); 158 159 if (debug > 0) 160 flite_hw_dump_regs(fimc, __func__); 161 162 spin_unlock_irqrestore(&fimc->slock, flags); 163 return 0; 164 } 165 166 /* 167 * Reinitialize the driver so it is ready to start the streaming again. 168 * Set fimc->state to indicate stream off and the hardware shut down state. 169 * If not suspending (@suspend is false), return any buffers to videobuf2. 170 * Otherwise put any owned buffers onto the pending buffers queue, so they 171 * can be re-spun when the device is being resumed. Also perform FIMC 172 * software reset and disable streaming on the whole pipeline if required. 173 */ 174 static int fimc_lite_reinit(struct fimc_lite *fimc, bool suspend) 175 { 176 struct flite_buffer *buf; 177 unsigned long flags; 178 bool streaming; 179 180 spin_lock_irqsave(&fimc->slock, flags); 181 streaming = fimc->state & (1 << ST_SENSOR_STREAM); 182 183 fimc->state &= ~(1 << ST_FLITE_RUN | 1 << ST_FLITE_OFF | 184 1 << ST_FLITE_STREAM | 1 << ST_SENSOR_STREAM); 185 if (suspend) 186 fimc->state |= (1 << ST_FLITE_SUSPENDED); 187 else 188 fimc->state &= ~(1 << ST_FLITE_PENDING | 189 1 << ST_FLITE_SUSPENDED); 190 191 /* Release unused buffers */ 192 while (!suspend && !list_empty(&fimc->pending_buf_q)) { 193 buf = fimc_lite_pending_queue_pop(fimc); 194 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); 195 } 196 /* If suspending put unused buffers onto pending queue */ 197 while (!list_empty(&fimc->active_buf_q)) { 198 buf = fimc_lite_active_queue_pop(fimc); 199 if (suspend) 200 fimc_lite_pending_queue_add(fimc, buf); 201 else 202 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); 203 } 204 205 spin_unlock_irqrestore(&fimc->slock, flags); 206 207 flite_hw_reset(fimc); 208 209 if (!streaming) 210 return 0; 211 212 return fimc_pipeline_call(&fimc->ve, set_stream, 0); 213 } 214 215 static int fimc_lite_stop_capture(struct fimc_lite *fimc, bool suspend) 216 { 217 unsigned long flags; 218 219 if (!fimc_lite_active(fimc)) 220 return 0; 221 222 spin_lock_irqsave(&fimc->slock, flags); 223 set_bit(ST_FLITE_OFF, &fimc->state); 224 flite_hw_capture_stop(fimc); 225 spin_unlock_irqrestore(&fimc->slock, flags); 226 227 wait_event_timeout(fimc->irq_queue, 228 !test_bit(ST_FLITE_OFF, &fimc->state), 229 (2*HZ/10)); /* 200 ms */ 230 231 return fimc_lite_reinit(fimc, suspend); 232 } 233 234 /* Must be called with fimc.slock spinlock held. */ 235 static void fimc_lite_config_update(struct fimc_lite *fimc) 236 { 237 flite_hw_set_window_offset(fimc, &fimc->inp_frame); 238 flite_hw_set_dma_window(fimc, &fimc->out_frame); 239 flite_hw_set_test_pattern(fimc, fimc->test_pattern->val); 240 clear_bit(ST_FLITE_CONFIG, &fimc->state); 241 } 242 243 static irqreturn_t flite_irq_handler(int irq, void *priv) 244 { 245 struct fimc_lite *fimc = priv; 246 struct flite_buffer *vbuf; 247 unsigned long flags; 248 u32 intsrc; 249 250 spin_lock_irqsave(&fimc->slock, flags); 251 252 intsrc = flite_hw_get_interrupt_source(fimc); 253 flite_hw_clear_pending_irq(fimc); 254 255 if (test_and_clear_bit(ST_FLITE_OFF, &fimc->state)) { 256 wake_up(&fimc->irq_queue); 257 goto done; 258 } 259 260 if (intsrc & FLITE_REG_CISTATUS_IRQ_SRC_OVERFLOW) { 261 clear_bit(ST_FLITE_RUN, &fimc->state); 262 fimc->events.data_overflow++; 263 } 264 265 if (intsrc & FLITE_REG_CISTATUS_IRQ_SRC_LASTCAPEND) { 266 flite_hw_clear_last_capture_end(fimc); 267 clear_bit(ST_FLITE_STREAM, &fimc->state); 268 wake_up(&fimc->irq_queue); 269 } 270 271 if (atomic_read(&fimc->out_path) != FIMC_IO_DMA) 272 goto done; 273 274 if ((intsrc & FLITE_REG_CISTATUS_IRQ_SRC_FRMSTART) && 275 test_bit(ST_FLITE_RUN, &fimc->state) && 276 !list_empty(&fimc->pending_buf_q)) { 277 vbuf = fimc_lite_pending_queue_pop(fimc); 278 flite_hw_set_dma_buffer(fimc, vbuf); 279 fimc_lite_active_queue_add(fimc, vbuf); 280 } 281 282 if ((intsrc & FLITE_REG_CISTATUS_IRQ_SRC_FRMEND) && 283 test_bit(ST_FLITE_RUN, &fimc->state) && 284 !list_empty(&fimc->active_buf_q)) { 285 vbuf = fimc_lite_active_queue_pop(fimc); 286 vbuf->vb.vb2_buf.timestamp = ktime_get_ns(); 287 vbuf->vb.sequence = fimc->frame_count++; 288 flite_hw_mask_dma_buffer(fimc, vbuf->index); 289 vb2_buffer_done(&vbuf->vb.vb2_buf, VB2_BUF_STATE_DONE); 290 } 291 292 if (test_bit(ST_FLITE_CONFIG, &fimc->state)) 293 fimc_lite_config_update(fimc); 294 295 if (list_empty(&fimc->pending_buf_q)) { 296 flite_hw_capture_stop(fimc); 297 clear_bit(ST_FLITE_STREAM, &fimc->state); 298 } 299 done: 300 set_bit(ST_FLITE_RUN, &fimc->state); 301 spin_unlock_irqrestore(&fimc->slock, flags); 302 return IRQ_HANDLED; 303 } 304 305 static int start_streaming(struct vb2_queue *q, unsigned int count) 306 { 307 struct fimc_lite *fimc = q->drv_priv; 308 unsigned long flags; 309 int ret; 310 311 spin_lock_irqsave(&fimc->slock, flags); 312 313 fimc->buf_index = 0; 314 fimc->frame_count = 0; 315 316 spin_unlock_irqrestore(&fimc->slock, flags); 317 318 ret = fimc_lite_hw_init(fimc, false); 319 if (ret) { 320 fimc_lite_reinit(fimc, false); 321 return ret; 322 } 323 324 set_bit(ST_FLITE_PENDING, &fimc->state); 325 326 if (!list_empty(&fimc->active_buf_q) && 327 !test_and_set_bit(ST_FLITE_STREAM, &fimc->state)) { 328 flite_hw_capture_start(fimc); 329 330 if (!test_and_set_bit(ST_SENSOR_STREAM, &fimc->state)) 331 fimc_pipeline_call(&fimc->ve, set_stream, 1); 332 } 333 if (debug > 0) 334 flite_hw_dump_regs(fimc, __func__); 335 336 return 0; 337 } 338 339 static void stop_streaming(struct vb2_queue *q) 340 { 341 struct fimc_lite *fimc = q->drv_priv; 342 343 if (!fimc_lite_active(fimc)) 344 return; 345 346 fimc_lite_stop_capture(fimc, false); 347 } 348 349 static int queue_setup(struct vb2_queue *vq, 350 unsigned int *num_buffers, unsigned int *num_planes, 351 unsigned int sizes[], struct device *alloc_devs[]) 352 { 353 struct fimc_lite *fimc = vq->drv_priv; 354 struct flite_frame *frame = &fimc->out_frame; 355 const struct fimc_fmt *fmt = frame->fmt; 356 unsigned long wh = frame->f_width * frame->f_height; 357 int i; 358 359 if (fmt == NULL) 360 return -EINVAL; 361 362 if (*num_planes) { 363 if (*num_planes != fmt->memplanes) 364 return -EINVAL; 365 for (i = 0; i < *num_planes; i++) 366 if (sizes[i] < (wh * fmt->depth[i]) / 8) 367 return -EINVAL; 368 return 0; 369 } 370 371 *num_planes = fmt->memplanes; 372 373 for (i = 0; i < fmt->memplanes; i++) 374 sizes[i] = (wh * fmt->depth[i]) / 8; 375 376 return 0; 377 } 378 379 static int buffer_prepare(struct vb2_buffer *vb) 380 { 381 struct vb2_queue *vq = vb->vb2_queue; 382 struct fimc_lite *fimc = vq->drv_priv; 383 int i; 384 385 if (fimc->out_frame.fmt == NULL) 386 return -EINVAL; 387 388 for (i = 0; i < fimc->out_frame.fmt->memplanes; i++) { 389 unsigned long size = fimc->payload[i]; 390 391 if (vb2_plane_size(vb, i) < size) { 392 v4l2_err(&fimc->ve.vdev, 393 "User buffer too small (%ld < %ld)\n", 394 vb2_plane_size(vb, i), size); 395 return -EINVAL; 396 } 397 vb2_set_plane_payload(vb, i, size); 398 } 399 400 return 0; 401 } 402 403 static void buffer_queue(struct vb2_buffer *vb) 404 { 405 struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); 406 struct flite_buffer *buf 407 = container_of(vbuf, struct flite_buffer, vb); 408 struct fimc_lite *fimc = vb2_get_drv_priv(vb->vb2_queue); 409 unsigned long flags; 410 411 spin_lock_irqsave(&fimc->slock, flags); 412 buf->addr = vb2_dma_contig_plane_dma_addr(vb, 0); 413 414 buf->index = fimc->buf_index++; 415 if (fimc->buf_index >= fimc->reqbufs_count) 416 fimc->buf_index = 0; 417 418 if (!test_bit(ST_FLITE_SUSPENDED, &fimc->state) && 419 !test_bit(ST_FLITE_STREAM, &fimc->state) && 420 list_empty(&fimc->active_buf_q)) { 421 flite_hw_set_dma_buffer(fimc, buf); 422 fimc_lite_active_queue_add(fimc, buf); 423 } else { 424 fimc_lite_pending_queue_add(fimc, buf); 425 } 426 427 if (vb2_is_streaming(&fimc->vb_queue) && 428 !list_empty(&fimc->pending_buf_q) && 429 !test_and_set_bit(ST_FLITE_STREAM, &fimc->state)) { 430 flite_hw_capture_start(fimc); 431 spin_unlock_irqrestore(&fimc->slock, flags); 432 433 if (!test_and_set_bit(ST_SENSOR_STREAM, &fimc->state)) 434 fimc_pipeline_call(&fimc->ve, set_stream, 1); 435 return; 436 } 437 spin_unlock_irqrestore(&fimc->slock, flags); 438 } 439 440 static const struct vb2_ops fimc_lite_qops = { 441 .queue_setup = queue_setup, 442 .buf_prepare = buffer_prepare, 443 .buf_queue = buffer_queue, 444 .wait_prepare = vb2_ops_wait_prepare, 445 .wait_finish = vb2_ops_wait_finish, 446 .start_streaming = start_streaming, 447 .stop_streaming = stop_streaming, 448 }; 449 450 static void fimc_lite_clear_event_counters(struct fimc_lite *fimc) 451 { 452 unsigned long flags; 453 454 spin_lock_irqsave(&fimc->slock, flags); 455 memset(&fimc->events, 0, sizeof(fimc->events)); 456 spin_unlock_irqrestore(&fimc->slock, flags); 457 } 458 459 static int fimc_lite_open(struct file *file) 460 { 461 struct fimc_lite *fimc = video_drvdata(file); 462 struct media_entity *me = &fimc->ve.vdev.entity; 463 int ret; 464 465 mutex_lock(&fimc->lock); 466 if (atomic_read(&fimc->out_path) != FIMC_IO_DMA) { 467 ret = -EBUSY; 468 goto unlock; 469 } 470 471 set_bit(ST_FLITE_IN_USE, &fimc->state); 472 ret = pm_runtime_resume_and_get(&fimc->pdev->dev); 473 if (ret < 0) 474 goto err_in_use; 475 476 ret = v4l2_fh_open(file); 477 if (ret < 0) 478 goto err_pm; 479 480 if (!v4l2_fh_is_singular_file(file) || 481 atomic_read(&fimc->out_path) != FIMC_IO_DMA) 482 goto unlock; 483 484 mutex_lock(&me->graph_obj.mdev->graph_mutex); 485 486 ret = fimc_pipeline_call(&fimc->ve, open, me, true); 487 488 /* Mark video pipeline ending at this video node as in use. */ 489 if (ret == 0) 490 me->use_count++; 491 492 mutex_unlock(&me->graph_obj.mdev->graph_mutex); 493 494 if (!ret) { 495 fimc_lite_clear_event_counters(fimc); 496 goto unlock; 497 } 498 499 v4l2_fh_release(file); 500 err_pm: 501 pm_runtime_put_sync(&fimc->pdev->dev); 502 err_in_use: 503 clear_bit(ST_FLITE_IN_USE, &fimc->state); 504 unlock: 505 mutex_unlock(&fimc->lock); 506 return ret; 507 } 508 509 static int fimc_lite_release(struct file *file) 510 { 511 struct fimc_lite *fimc = video_drvdata(file); 512 struct media_entity *entity = &fimc->ve.vdev.entity; 513 514 mutex_lock(&fimc->lock); 515 516 if (v4l2_fh_is_singular_file(file) && 517 atomic_read(&fimc->out_path) == FIMC_IO_DMA) { 518 if (fimc->streaming) { 519 media_pipeline_stop(entity); 520 fimc->streaming = false; 521 } 522 fimc_lite_stop_capture(fimc, false); 523 fimc_pipeline_call(&fimc->ve, close); 524 clear_bit(ST_FLITE_IN_USE, &fimc->state); 525 526 mutex_lock(&entity->graph_obj.mdev->graph_mutex); 527 entity->use_count--; 528 mutex_unlock(&entity->graph_obj.mdev->graph_mutex); 529 } 530 531 _vb2_fop_release(file, NULL); 532 pm_runtime_put(&fimc->pdev->dev); 533 clear_bit(ST_FLITE_SUSPENDED, &fimc->state); 534 535 mutex_unlock(&fimc->lock); 536 return 0; 537 } 538 539 static const struct v4l2_file_operations fimc_lite_fops = { 540 .owner = THIS_MODULE, 541 .open = fimc_lite_open, 542 .release = fimc_lite_release, 543 .poll = vb2_fop_poll, 544 .unlocked_ioctl = video_ioctl2, 545 .mmap = vb2_fop_mmap, 546 }; 547 548 /* 549 * Format and crop negotiation helpers 550 */ 551 552 static const struct fimc_fmt *fimc_lite_subdev_try_fmt(struct fimc_lite *fimc, 553 struct v4l2_subdev_state *sd_state, 554 struct v4l2_subdev_format *format) 555 { 556 struct flite_drvdata *dd = fimc->dd; 557 struct v4l2_mbus_framefmt *mf = &format->format; 558 const struct fimc_fmt *fmt = NULL; 559 560 if (format->pad == FLITE_SD_PAD_SINK) { 561 v4l_bound_align_image(&mf->width, 8, dd->max_width, 562 ffs(dd->out_width_align) - 1, 563 &mf->height, 0, dd->max_height, 0, 0); 564 565 fmt = fimc_lite_find_format(NULL, &mf->code, 0, 0); 566 if (WARN_ON(!fmt)) 567 return NULL; 568 569 mf->colorspace = fmt->colorspace; 570 mf->code = fmt->mbus_code; 571 } else { 572 struct flite_frame *sink = &fimc->inp_frame; 573 struct v4l2_mbus_framefmt *sink_fmt; 574 struct v4l2_rect *rect; 575 576 if (format->which == V4L2_SUBDEV_FORMAT_TRY) { 577 sink_fmt = v4l2_subdev_get_try_format(&fimc->subdev, 578 sd_state, 579 FLITE_SD_PAD_SINK); 580 581 mf->code = sink_fmt->code; 582 mf->colorspace = sink_fmt->colorspace; 583 584 rect = v4l2_subdev_get_try_crop(&fimc->subdev, 585 sd_state, 586 FLITE_SD_PAD_SINK); 587 } else { 588 mf->code = sink->fmt->mbus_code; 589 mf->colorspace = sink->fmt->colorspace; 590 rect = &sink->rect; 591 } 592 593 /* Allow changing format only on sink pad */ 594 mf->width = rect->width; 595 mf->height = rect->height; 596 } 597 598 mf->field = V4L2_FIELD_NONE; 599 600 v4l2_dbg(1, debug, &fimc->subdev, "code: %#x (%d), %dx%d\n", 601 mf->code, mf->colorspace, mf->width, mf->height); 602 603 return fmt; 604 } 605 606 static void fimc_lite_try_crop(struct fimc_lite *fimc, struct v4l2_rect *r) 607 { 608 struct flite_frame *frame = &fimc->inp_frame; 609 610 v4l_bound_align_image(&r->width, 0, frame->f_width, 0, 611 &r->height, 0, frame->f_height, 0, 0); 612 613 /* Adjust left/top if cropping rectangle got out of bounds */ 614 r->left = clamp_t(u32, r->left, 0, frame->f_width - r->width); 615 r->left = round_down(r->left, fimc->dd->win_hor_offs_align); 616 r->top = clamp_t(u32, r->top, 0, frame->f_height - r->height); 617 618 v4l2_dbg(1, debug, &fimc->subdev, "(%d,%d)/%dx%d, sink fmt: %dx%d\n", 619 r->left, r->top, r->width, r->height, 620 frame->f_width, frame->f_height); 621 } 622 623 static void fimc_lite_try_compose(struct fimc_lite *fimc, struct v4l2_rect *r) 624 { 625 struct flite_frame *frame = &fimc->out_frame; 626 struct v4l2_rect *crop_rect = &fimc->inp_frame.rect; 627 628 /* Scaling is not supported so we enforce compose rectangle size 629 same as size of the sink crop rectangle. */ 630 r->width = crop_rect->width; 631 r->height = crop_rect->height; 632 633 /* Adjust left/top if the composing rectangle got out of bounds */ 634 r->left = clamp_t(u32, r->left, 0, frame->f_width - r->width); 635 r->left = round_down(r->left, fimc->dd->out_hor_offs_align); 636 r->top = clamp_t(u32, r->top, 0, fimc->out_frame.f_height - r->height); 637 638 v4l2_dbg(1, debug, &fimc->subdev, "(%d,%d)/%dx%d, source fmt: %dx%d\n", 639 r->left, r->top, r->width, r->height, 640 frame->f_width, frame->f_height); 641 } 642 643 /* 644 * Video node ioctl operations 645 */ 646 static int fimc_lite_querycap(struct file *file, void *priv, 647 struct v4l2_capability *cap) 648 { 649 strscpy(cap->driver, FIMC_LITE_DRV_NAME, sizeof(cap->driver)); 650 strscpy(cap->card, FIMC_LITE_DRV_NAME, sizeof(cap->card)); 651 return 0; 652 } 653 654 static int fimc_lite_enum_fmt(struct file *file, void *priv, 655 struct v4l2_fmtdesc *f) 656 { 657 const struct fimc_fmt *fmt; 658 659 if (f->index >= ARRAY_SIZE(fimc_lite_formats)) 660 return -EINVAL; 661 662 fmt = &fimc_lite_formats[f->index]; 663 f->pixelformat = fmt->fourcc; 664 665 return 0; 666 } 667 668 static int fimc_lite_g_fmt_mplane(struct file *file, void *fh, 669 struct v4l2_format *f) 670 { 671 struct fimc_lite *fimc = video_drvdata(file); 672 struct v4l2_pix_format_mplane *pixm = &f->fmt.pix_mp; 673 struct v4l2_plane_pix_format *plane_fmt = &pixm->plane_fmt[0]; 674 struct flite_frame *frame = &fimc->out_frame; 675 const struct fimc_fmt *fmt = frame->fmt; 676 677 plane_fmt->bytesperline = (frame->f_width * fmt->depth[0]) / 8; 678 plane_fmt->sizeimage = plane_fmt->bytesperline * frame->f_height; 679 680 pixm->num_planes = fmt->memplanes; 681 pixm->pixelformat = fmt->fourcc; 682 pixm->width = frame->f_width; 683 pixm->height = frame->f_height; 684 pixm->field = V4L2_FIELD_NONE; 685 pixm->colorspace = fmt->colorspace; 686 return 0; 687 } 688 689 static int fimc_lite_try_fmt(struct fimc_lite *fimc, 690 struct v4l2_pix_format_mplane *pixm, 691 const struct fimc_fmt **ffmt) 692 { 693 u32 bpl = pixm->plane_fmt[0].bytesperline; 694 struct flite_drvdata *dd = fimc->dd; 695 const struct fimc_fmt *inp_fmt = fimc->inp_frame.fmt; 696 const struct fimc_fmt *fmt; 697 698 if (WARN_ON(inp_fmt == NULL)) 699 return -EINVAL; 700 /* 701 * We allow some flexibility only for YUV formats. In case of raw 702 * raw Bayer the FIMC-LITE's output format must match its camera 703 * interface input format. 704 */ 705 if (inp_fmt->flags & FMT_FLAGS_YUV) 706 fmt = fimc_lite_find_format(&pixm->pixelformat, NULL, 707 inp_fmt->flags, 0); 708 else 709 fmt = inp_fmt; 710 711 if (WARN_ON(fmt == NULL)) 712 return -EINVAL; 713 if (ffmt) 714 *ffmt = fmt; 715 v4l_bound_align_image(&pixm->width, 8, dd->max_width, 716 ffs(dd->out_width_align) - 1, 717 &pixm->height, 0, dd->max_height, 0, 0); 718 719 if ((bpl == 0 || ((bpl * 8) / fmt->depth[0]) < pixm->width)) 720 pixm->plane_fmt[0].bytesperline = (pixm->width * 721 fmt->depth[0]) / 8; 722 723 if (pixm->plane_fmt[0].sizeimage == 0) 724 pixm->plane_fmt[0].sizeimage = (pixm->width * pixm->height * 725 fmt->depth[0]) / 8; 726 pixm->num_planes = fmt->memplanes; 727 pixm->pixelformat = fmt->fourcc; 728 pixm->colorspace = fmt->colorspace; 729 pixm->field = V4L2_FIELD_NONE; 730 return 0; 731 } 732 733 static int fimc_lite_try_fmt_mplane(struct file *file, void *fh, 734 struct v4l2_format *f) 735 { 736 struct fimc_lite *fimc = video_drvdata(file); 737 return fimc_lite_try_fmt(fimc, &f->fmt.pix_mp, NULL); 738 } 739 740 static int fimc_lite_s_fmt_mplane(struct file *file, void *priv, 741 struct v4l2_format *f) 742 { 743 struct v4l2_pix_format_mplane *pixm = &f->fmt.pix_mp; 744 struct fimc_lite *fimc = video_drvdata(file); 745 struct flite_frame *frame = &fimc->out_frame; 746 const struct fimc_fmt *fmt = NULL; 747 int ret; 748 749 if (vb2_is_busy(&fimc->vb_queue)) 750 return -EBUSY; 751 752 ret = fimc_lite_try_fmt(fimc, &f->fmt.pix_mp, &fmt); 753 if (ret < 0) 754 return ret; 755 756 frame->fmt = fmt; 757 fimc->payload[0] = max((pixm->width * pixm->height * fmt->depth[0]) / 8, 758 pixm->plane_fmt[0].sizeimage); 759 frame->f_width = pixm->width; 760 frame->f_height = pixm->height; 761 762 return 0; 763 } 764 765 static int fimc_pipeline_validate(struct fimc_lite *fimc) 766 { 767 struct v4l2_subdev *sd = &fimc->subdev; 768 struct v4l2_subdev_format sink_fmt, src_fmt; 769 struct media_pad *pad; 770 int ret; 771 772 while (1) { 773 /* Retrieve format at the sink pad */ 774 pad = &sd->entity.pads[0]; 775 if (!(pad->flags & MEDIA_PAD_FL_SINK)) 776 break; 777 /* Don't call FIMC subdev operation to avoid nested locking */ 778 if (sd == &fimc->subdev) { 779 struct flite_frame *ff = &fimc->out_frame; 780 sink_fmt.format.width = ff->f_width; 781 sink_fmt.format.height = ff->f_height; 782 sink_fmt.format.code = fimc->inp_frame.fmt->mbus_code; 783 } else { 784 sink_fmt.pad = pad->index; 785 sink_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; 786 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, 787 &sink_fmt); 788 if (ret < 0 && ret != -ENOIOCTLCMD) 789 return -EPIPE; 790 } 791 /* Retrieve format at the source pad */ 792 pad = media_entity_remote_pad(pad); 793 if (!pad || !is_media_entity_v4l2_subdev(pad->entity)) 794 break; 795 796 sd = media_entity_to_v4l2_subdev(pad->entity); 797 src_fmt.pad = pad->index; 798 src_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; 799 ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &src_fmt); 800 if (ret < 0 && ret != -ENOIOCTLCMD) 801 return -EPIPE; 802 803 if (src_fmt.format.width != sink_fmt.format.width || 804 src_fmt.format.height != sink_fmt.format.height || 805 src_fmt.format.code != sink_fmt.format.code) 806 return -EPIPE; 807 } 808 return 0; 809 } 810 811 static int fimc_lite_streamon(struct file *file, void *priv, 812 enum v4l2_buf_type type) 813 { 814 struct fimc_lite *fimc = video_drvdata(file); 815 struct media_entity *entity = &fimc->ve.vdev.entity; 816 int ret; 817 818 if (fimc_lite_active(fimc)) 819 return -EBUSY; 820 821 ret = media_pipeline_start(entity, &fimc->ve.pipe->mp); 822 if (ret < 0) 823 return ret; 824 825 ret = fimc_pipeline_validate(fimc); 826 if (ret < 0) 827 goto err_p_stop; 828 829 fimc->sensor = fimc_find_remote_sensor(&fimc->subdev.entity); 830 831 ret = vb2_ioctl_streamon(file, priv, type); 832 if (!ret) { 833 fimc->streaming = true; 834 return ret; 835 } 836 837 err_p_stop: 838 media_pipeline_stop(entity); 839 return 0; 840 } 841 842 static int fimc_lite_streamoff(struct file *file, void *priv, 843 enum v4l2_buf_type type) 844 { 845 struct fimc_lite *fimc = video_drvdata(file); 846 int ret; 847 848 ret = vb2_ioctl_streamoff(file, priv, type); 849 if (ret < 0) 850 return ret; 851 852 media_pipeline_stop(&fimc->ve.vdev.entity); 853 fimc->streaming = false; 854 return 0; 855 } 856 857 static int fimc_lite_reqbufs(struct file *file, void *priv, 858 struct v4l2_requestbuffers *reqbufs) 859 { 860 struct fimc_lite *fimc = video_drvdata(file); 861 int ret; 862 863 reqbufs->count = max_t(u32, FLITE_REQ_BUFS_MIN, reqbufs->count); 864 ret = vb2_ioctl_reqbufs(file, priv, reqbufs); 865 if (!ret) 866 fimc->reqbufs_count = reqbufs->count; 867 868 return ret; 869 } 870 871 static int fimc_lite_g_selection(struct file *file, void *fh, 872 struct v4l2_selection *sel) 873 { 874 struct fimc_lite *fimc = video_drvdata(file); 875 struct flite_frame *f = &fimc->out_frame; 876 877 if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) 878 return -EINVAL; 879 880 switch (sel->target) { 881 case V4L2_SEL_TGT_COMPOSE_BOUNDS: 882 case V4L2_SEL_TGT_COMPOSE_DEFAULT: 883 sel->r.left = 0; 884 sel->r.top = 0; 885 sel->r.width = f->f_width; 886 sel->r.height = f->f_height; 887 return 0; 888 889 case V4L2_SEL_TGT_COMPOSE: 890 sel->r = f->rect; 891 return 0; 892 } 893 894 return -EINVAL; 895 } 896 897 static int fimc_lite_s_selection(struct file *file, void *fh, 898 struct v4l2_selection *sel) 899 { 900 struct fimc_lite *fimc = video_drvdata(file); 901 struct flite_frame *f = &fimc->out_frame; 902 struct v4l2_rect rect = sel->r; 903 unsigned long flags; 904 905 if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE || 906 sel->target != V4L2_SEL_TGT_COMPOSE) 907 return -EINVAL; 908 909 fimc_lite_try_compose(fimc, &rect); 910 911 if ((sel->flags & V4L2_SEL_FLAG_LE) && 912 !v4l2_rect_enclosed(&rect, &sel->r)) 913 return -ERANGE; 914 915 if ((sel->flags & V4L2_SEL_FLAG_GE) && 916 !v4l2_rect_enclosed(&sel->r, &rect)) 917 return -ERANGE; 918 919 sel->r = rect; 920 spin_lock_irqsave(&fimc->slock, flags); 921 f->rect = rect; 922 set_bit(ST_FLITE_CONFIG, &fimc->state); 923 spin_unlock_irqrestore(&fimc->slock, flags); 924 925 return 0; 926 } 927 928 static const struct v4l2_ioctl_ops fimc_lite_ioctl_ops = { 929 .vidioc_querycap = fimc_lite_querycap, 930 .vidioc_enum_fmt_vid_cap = fimc_lite_enum_fmt, 931 .vidioc_try_fmt_vid_cap_mplane = fimc_lite_try_fmt_mplane, 932 .vidioc_s_fmt_vid_cap_mplane = fimc_lite_s_fmt_mplane, 933 .vidioc_g_fmt_vid_cap_mplane = fimc_lite_g_fmt_mplane, 934 .vidioc_g_selection = fimc_lite_g_selection, 935 .vidioc_s_selection = fimc_lite_s_selection, 936 .vidioc_reqbufs = fimc_lite_reqbufs, 937 .vidioc_querybuf = vb2_ioctl_querybuf, 938 .vidioc_prepare_buf = vb2_ioctl_prepare_buf, 939 .vidioc_create_bufs = vb2_ioctl_create_bufs, 940 .vidioc_qbuf = vb2_ioctl_qbuf, 941 .vidioc_dqbuf = vb2_ioctl_dqbuf, 942 .vidioc_streamon = fimc_lite_streamon, 943 .vidioc_streamoff = fimc_lite_streamoff, 944 }; 945 946 /* Capture subdev media entity operations */ 947 static int fimc_lite_link_setup(struct media_entity *entity, 948 const struct media_pad *local, 949 const struct media_pad *remote, u32 flags) 950 { 951 struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity); 952 struct fimc_lite *fimc = v4l2_get_subdevdata(sd); 953 int ret = 0; 954 955 if (WARN_ON(fimc == NULL)) 956 return 0; 957 958 v4l2_dbg(1, debug, sd, "%s: %s --> %s, flags: 0x%x. source_id: 0x%x\n", 959 __func__, remote->entity->name, local->entity->name, 960 flags, fimc->source_subdev_grp_id); 961 962 switch (local->index) { 963 case FLITE_SD_PAD_SINK: 964 if (flags & MEDIA_LNK_FL_ENABLED) { 965 if (fimc->source_subdev_grp_id == 0) 966 fimc->source_subdev_grp_id = sd->grp_id; 967 else 968 ret = -EBUSY; 969 } else { 970 fimc->source_subdev_grp_id = 0; 971 fimc->sensor = NULL; 972 } 973 break; 974 975 case FLITE_SD_PAD_SOURCE_DMA: 976 if (!(flags & MEDIA_LNK_FL_ENABLED)) 977 atomic_set(&fimc->out_path, FIMC_IO_NONE); 978 else 979 atomic_set(&fimc->out_path, FIMC_IO_DMA); 980 break; 981 982 case FLITE_SD_PAD_SOURCE_ISP: 983 if (!(flags & MEDIA_LNK_FL_ENABLED)) 984 atomic_set(&fimc->out_path, FIMC_IO_NONE); 985 else 986 atomic_set(&fimc->out_path, FIMC_IO_ISP); 987 break; 988 989 default: 990 v4l2_err(sd, "Invalid pad index\n"); 991 ret = -EINVAL; 992 } 993 mb(); 994 995 return ret; 996 } 997 998 static const struct media_entity_operations fimc_lite_subdev_media_ops = { 999 .link_setup = fimc_lite_link_setup, 1000 }; 1001 1002 static int fimc_lite_subdev_enum_mbus_code(struct v4l2_subdev *sd, 1003 struct v4l2_subdev_state *sd_state, 1004 struct v4l2_subdev_mbus_code_enum *code) 1005 { 1006 const struct fimc_fmt *fmt; 1007 1008 fmt = fimc_lite_find_format(NULL, NULL, 0, code->index); 1009 if (!fmt) 1010 return -EINVAL; 1011 code->code = fmt->mbus_code; 1012 return 0; 1013 } 1014 1015 static struct v4l2_mbus_framefmt *__fimc_lite_subdev_get_try_fmt( 1016 struct v4l2_subdev *sd, 1017 struct v4l2_subdev_state *sd_state, unsigned int pad) 1018 { 1019 if (pad != FLITE_SD_PAD_SINK) 1020 pad = FLITE_SD_PAD_SOURCE_DMA; 1021 1022 return v4l2_subdev_get_try_format(sd, sd_state, pad); 1023 } 1024 1025 static int fimc_lite_subdev_get_fmt(struct v4l2_subdev *sd, 1026 struct v4l2_subdev_state *sd_state, 1027 struct v4l2_subdev_format *fmt) 1028 { 1029 struct fimc_lite *fimc = v4l2_get_subdevdata(sd); 1030 struct v4l2_mbus_framefmt *mf = &fmt->format; 1031 struct flite_frame *f = &fimc->inp_frame; 1032 1033 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { 1034 mf = __fimc_lite_subdev_get_try_fmt(sd, sd_state, fmt->pad); 1035 fmt->format = *mf; 1036 return 0; 1037 } 1038 1039 mutex_lock(&fimc->lock); 1040 mf->colorspace = f->fmt->colorspace; 1041 mf->code = f->fmt->mbus_code; 1042 1043 if (fmt->pad == FLITE_SD_PAD_SINK) { 1044 /* full camera input frame size */ 1045 mf->width = f->f_width; 1046 mf->height = f->f_height; 1047 } else { 1048 /* crop size */ 1049 mf->width = f->rect.width; 1050 mf->height = f->rect.height; 1051 } 1052 mutex_unlock(&fimc->lock); 1053 return 0; 1054 } 1055 1056 static int fimc_lite_subdev_set_fmt(struct v4l2_subdev *sd, 1057 struct v4l2_subdev_state *sd_state, 1058 struct v4l2_subdev_format *fmt) 1059 { 1060 struct fimc_lite *fimc = v4l2_get_subdevdata(sd); 1061 struct v4l2_mbus_framefmt *mf = &fmt->format; 1062 struct flite_frame *sink = &fimc->inp_frame; 1063 struct flite_frame *source = &fimc->out_frame; 1064 const struct fimc_fmt *ffmt; 1065 1066 v4l2_dbg(1, debug, sd, "pad%d: code: 0x%x, %dx%d\n", 1067 fmt->pad, mf->code, mf->width, mf->height); 1068 1069 mutex_lock(&fimc->lock); 1070 1071 if ((atomic_read(&fimc->out_path) == FIMC_IO_ISP && 1072 media_entity_is_streaming(&sd->entity)) || 1073 (atomic_read(&fimc->out_path) == FIMC_IO_DMA && 1074 vb2_is_busy(&fimc->vb_queue))) { 1075 mutex_unlock(&fimc->lock); 1076 return -EBUSY; 1077 } 1078 1079 ffmt = fimc_lite_subdev_try_fmt(fimc, sd_state, fmt); 1080 1081 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { 1082 struct v4l2_mbus_framefmt *src_fmt; 1083 1084 mf = __fimc_lite_subdev_get_try_fmt(sd, sd_state, fmt->pad); 1085 *mf = fmt->format; 1086 1087 if (fmt->pad == FLITE_SD_PAD_SINK) { 1088 unsigned int pad = FLITE_SD_PAD_SOURCE_DMA; 1089 src_fmt = __fimc_lite_subdev_get_try_fmt(sd, sd_state, 1090 pad); 1091 *src_fmt = *mf; 1092 } 1093 1094 mutex_unlock(&fimc->lock); 1095 return 0; 1096 } 1097 1098 if (fmt->pad == FLITE_SD_PAD_SINK) { 1099 sink->f_width = mf->width; 1100 sink->f_height = mf->height; 1101 sink->fmt = ffmt; 1102 /* Set sink crop rectangle */ 1103 sink->rect.width = mf->width; 1104 sink->rect.height = mf->height; 1105 sink->rect.left = 0; 1106 sink->rect.top = 0; 1107 /* Reset source format and crop rectangle */ 1108 source->rect = sink->rect; 1109 source->f_width = mf->width; 1110 source->f_height = mf->height; 1111 } 1112 1113 mutex_unlock(&fimc->lock); 1114 return 0; 1115 } 1116 1117 static int fimc_lite_subdev_get_selection(struct v4l2_subdev *sd, 1118 struct v4l2_subdev_state *sd_state, 1119 struct v4l2_subdev_selection *sel) 1120 { 1121 struct fimc_lite *fimc = v4l2_get_subdevdata(sd); 1122 struct flite_frame *f = &fimc->inp_frame; 1123 1124 if ((sel->target != V4L2_SEL_TGT_CROP && 1125 sel->target != V4L2_SEL_TGT_CROP_BOUNDS) || 1126 sel->pad != FLITE_SD_PAD_SINK) 1127 return -EINVAL; 1128 1129 if (sel->which == V4L2_SUBDEV_FORMAT_TRY) { 1130 sel->r = *v4l2_subdev_get_try_crop(sd, sd_state, sel->pad); 1131 return 0; 1132 } 1133 1134 mutex_lock(&fimc->lock); 1135 if (sel->target == V4L2_SEL_TGT_CROP) { 1136 sel->r = f->rect; 1137 } else { 1138 sel->r.left = 0; 1139 sel->r.top = 0; 1140 sel->r.width = f->f_width; 1141 sel->r.height = f->f_height; 1142 } 1143 mutex_unlock(&fimc->lock); 1144 1145 v4l2_dbg(1, debug, sd, "%s: (%d,%d) %dx%d, f_w: %d, f_h: %d\n", 1146 __func__, f->rect.left, f->rect.top, f->rect.width, 1147 f->rect.height, f->f_width, f->f_height); 1148 1149 return 0; 1150 } 1151 1152 static int fimc_lite_subdev_set_selection(struct v4l2_subdev *sd, 1153 struct v4l2_subdev_state *sd_state, 1154 struct v4l2_subdev_selection *sel) 1155 { 1156 struct fimc_lite *fimc = v4l2_get_subdevdata(sd); 1157 struct flite_frame *f = &fimc->inp_frame; 1158 int ret = 0; 1159 1160 if (sel->target != V4L2_SEL_TGT_CROP || sel->pad != FLITE_SD_PAD_SINK) 1161 return -EINVAL; 1162 1163 mutex_lock(&fimc->lock); 1164 fimc_lite_try_crop(fimc, &sel->r); 1165 1166 if (sel->which == V4L2_SUBDEV_FORMAT_TRY) { 1167 *v4l2_subdev_get_try_crop(sd, sd_state, sel->pad) = sel->r; 1168 } else { 1169 unsigned long flags; 1170 spin_lock_irqsave(&fimc->slock, flags); 1171 f->rect = sel->r; 1172 /* Same crop rectangle on the source pad */ 1173 fimc->out_frame.rect = sel->r; 1174 set_bit(ST_FLITE_CONFIG, &fimc->state); 1175 spin_unlock_irqrestore(&fimc->slock, flags); 1176 } 1177 mutex_unlock(&fimc->lock); 1178 1179 v4l2_dbg(1, debug, sd, "%s: (%d,%d) %dx%d, f_w: %d, f_h: %d\n", 1180 __func__, f->rect.left, f->rect.top, f->rect.width, 1181 f->rect.height, f->f_width, f->f_height); 1182 1183 return ret; 1184 } 1185 1186 static int fimc_lite_subdev_s_stream(struct v4l2_subdev *sd, int on) 1187 { 1188 struct fimc_lite *fimc = v4l2_get_subdevdata(sd); 1189 unsigned long flags; 1190 int ret; 1191 1192 /* 1193 * Find sensor subdev linked to FIMC-LITE directly or through 1194 * MIPI-CSIS. This is required for configuration where FIMC-LITE 1195 * is used as a subdev only and feeds data internally to FIMC-IS. 1196 * The pipeline links are protected through entity.pipe so there is no 1197 * need to take the media graph mutex here. 1198 */ 1199 fimc->sensor = fimc_find_remote_sensor(&sd->entity); 1200 1201 if (atomic_read(&fimc->out_path) != FIMC_IO_ISP) 1202 return -ENOIOCTLCMD; 1203 1204 mutex_lock(&fimc->lock); 1205 if (on) { 1206 flite_hw_reset(fimc); 1207 ret = fimc_lite_hw_init(fimc, true); 1208 if (!ret) { 1209 spin_lock_irqsave(&fimc->slock, flags); 1210 flite_hw_capture_start(fimc); 1211 spin_unlock_irqrestore(&fimc->slock, flags); 1212 } 1213 } else { 1214 set_bit(ST_FLITE_OFF, &fimc->state); 1215 1216 spin_lock_irqsave(&fimc->slock, flags); 1217 flite_hw_capture_stop(fimc); 1218 spin_unlock_irqrestore(&fimc->slock, flags); 1219 1220 ret = wait_event_timeout(fimc->irq_queue, 1221 !test_bit(ST_FLITE_OFF, &fimc->state), 1222 msecs_to_jiffies(200)); 1223 if (ret == 0) 1224 v4l2_err(sd, "s_stream(0) timeout\n"); 1225 clear_bit(ST_FLITE_RUN, &fimc->state); 1226 } 1227 1228 mutex_unlock(&fimc->lock); 1229 return ret; 1230 } 1231 1232 static int fimc_lite_log_status(struct v4l2_subdev *sd) 1233 { 1234 struct fimc_lite *fimc = v4l2_get_subdevdata(sd); 1235 1236 flite_hw_dump_regs(fimc, __func__); 1237 return 0; 1238 } 1239 1240 static int fimc_lite_subdev_registered(struct v4l2_subdev *sd) 1241 { 1242 struct fimc_lite *fimc = v4l2_get_subdevdata(sd); 1243 struct vb2_queue *q = &fimc->vb_queue; 1244 struct video_device *vfd = &fimc->ve.vdev; 1245 int ret; 1246 1247 memset(vfd, 0, sizeof(*vfd)); 1248 atomic_set(&fimc->out_path, FIMC_IO_DMA); 1249 1250 snprintf(vfd->name, sizeof(vfd->name), "fimc-lite.%d.capture", 1251 fimc->index); 1252 1253 vfd->fops = &fimc_lite_fops; 1254 vfd->ioctl_ops = &fimc_lite_ioctl_ops; 1255 vfd->v4l2_dev = sd->v4l2_dev; 1256 vfd->minor = -1; 1257 vfd->release = video_device_release_empty; 1258 vfd->queue = q; 1259 vfd->device_caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE | V4L2_CAP_STREAMING; 1260 fimc->reqbufs_count = 0; 1261 1262 INIT_LIST_HEAD(&fimc->pending_buf_q); 1263 INIT_LIST_HEAD(&fimc->active_buf_q); 1264 1265 memset(q, 0, sizeof(*q)); 1266 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE; 1267 q->io_modes = VB2_MMAP | VB2_USERPTR; 1268 q->ops = &fimc_lite_qops; 1269 q->mem_ops = &vb2_dma_contig_memops; 1270 q->buf_struct_size = sizeof(struct flite_buffer); 1271 q->drv_priv = fimc; 1272 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; 1273 q->lock = &fimc->lock; 1274 q->dev = &fimc->pdev->dev; 1275 1276 ret = vb2_queue_init(q); 1277 if (ret < 0) 1278 return ret; 1279 1280 fimc->vd_pad.flags = MEDIA_PAD_FL_SINK; 1281 ret = media_entity_pads_init(&vfd->entity, 1, &fimc->vd_pad); 1282 if (ret < 0) 1283 return ret; 1284 1285 video_set_drvdata(vfd, fimc); 1286 fimc->ve.pipe = v4l2_get_subdev_hostdata(sd); 1287 1288 ret = video_register_device(vfd, VFL_TYPE_VIDEO, -1); 1289 if (ret < 0) { 1290 media_entity_cleanup(&vfd->entity); 1291 fimc->ve.pipe = NULL; 1292 return ret; 1293 } 1294 1295 v4l2_info(sd->v4l2_dev, "Registered %s as /dev/%s\n", 1296 vfd->name, video_device_node_name(vfd)); 1297 return 0; 1298 } 1299 1300 static void fimc_lite_subdev_unregistered(struct v4l2_subdev *sd) 1301 { 1302 struct fimc_lite *fimc = v4l2_get_subdevdata(sd); 1303 1304 if (fimc == NULL) 1305 return; 1306 1307 mutex_lock(&fimc->lock); 1308 1309 if (video_is_registered(&fimc->ve.vdev)) { 1310 video_unregister_device(&fimc->ve.vdev); 1311 media_entity_cleanup(&fimc->ve.vdev.entity); 1312 fimc->ve.pipe = NULL; 1313 } 1314 1315 mutex_unlock(&fimc->lock); 1316 } 1317 1318 static const struct v4l2_subdev_internal_ops fimc_lite_subdev_internal_ops = { 1319 .registered = fimc_lite_subdev_registered, 1320 .unregistered = fimc_lite_subdev_unregistered, 1321 }; 1322 1323 static const struct v4l2_subdev_pad_ops fimc_lite_subdev_pad_ops = { 1324 .enum_mbus_code = fimc_lite_subdev_enum_mbus_code, 1325 .get_selection = fimc_lite_subdev_get_selection, 1326 .set_selection = fimc_lite_subdev_set_selection, 1327 .get_fmt = fimc_lite_subdev_get_fmt, 1328 .set_fmt = fimc_lite_subdev_set_fmt, 1329 }; 1330 1331 static const struct v4l2_subdev_video_ops fimc_lite_subdev_video_ops = { 1332 .s_stream = fimc_lite_subdev_s_stream, 1333 }; 1334 1335 static const struct v4l2_subdev_core_ops fimc_lite_core_ops = { 1336 .log_status = fimc_lite_log_status, 1337 }; 1338 1339 static const struct v4l2_subdev_ops fimc_lite_subdev_ops = { 1340 .core = &fimc_lite_core_ops, 1341 .video = &fimc_lite_subdev_video_ops, 1342 .pad = &fimc_lite_subdev_pad_ops, 1343 }; 1344 1345 static int fimc_lite_s_ctrl(struct v4l2_ctrl *ctrl) 1346 { 1347 struct fimc_lite *fimc = container_of(ctrl->handler, struct fimc_lite, 1348 ctrl_handler); 1349 set_bit(ST_FLITE_CONFIG, &fimc->state); 1350 return 0; 1351 } 1352 1353 static const struct v4l2_ctrl_ops fimc_lite_ctrl_ops = { 1354 .s_ctrl = fimc_lite_s_ctrl, 1355 }; 1356 1357 static const struct v4l2_ctrl_config fimc_lite_ctrl = { 1358 .ops = &fimc_lite_ctrl_ops, 1359 .id = V4L2_CTRL_CLASS_USER | 0x1001, 1360 .type = V4L2_CTRL_TYPE_BOOLEAN, 1361 .name = "Test Pattern 640x480", 1362 .step = 1, 1363 }; 1364 1365 static void fimc_lite_set_default_config(struct fimc_lite *fimc) 1366 { 1367 struct flite_frame *sink = &fimc->inp_frame; 1368 struct flite_frame *source = &fimc->out_frame; 1369 1370 sink->fmt = &fimc_lite_formats[0]; 1371 sink->f_width = FLITE_DEFAULT_WIDTH; 1372 sink->f_height = FLITE_DEFAULT_HEIGHT; 1373 1374 sink->rect.width = FLITE_DEFAULT_WIDTH; 1375 sink->rect.height = FLITE_DEFAULT_HEIGHT; 1376 sink->rect.left = 0; 1377 sink->rect.top = 0; 1378 1379 *source = *sink; 1380 } 1381 1382 static int fimc_lite_create_capture_subdev(struct fimc_lite *fimc) 1383 { 1384 struct v4l2_ctrl_handler *handler = &fimc->ctrl_handler; 1385 struct v4l2_subdev *sd = &fimc->subdev; 1386 int ret; 1387 1388 v4l2_subdev_init(sd, &fimc_lite_subdev_ops); 1389 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; 1390 snprintf(sd->name, sizeof(sd->name), "FIMC-LITE.%d", fimc->index); 1391 1392 fimc->subdev_pads[FLITE_SD_PAD_SINK].flags = MEDIA_PAD_FL_SINK; 1393 fimc->subdev_pads[FLITE_SD_PAD_SOURCE_DMA].flags = MEDIA_PAD_FL_SOURCE; 1394 fimc->subdev_pads[FLITE_SD_PAD_SOURCE_ISP].flags = MEDIA_PAD_FL_SOURCE; 1395 ret = media_entity_pads_init(&sd->entity, FLITE_SD_PADS_NUM, 1396 fimc->subdev_pads); 1397 if (ret) 1398 return ret; 1399 1400 v4l2_ctrl_handler_init(handler, 1); 1401 fimc->test_pattern = v4l2_ctrl_new_custom(handler, &fimc_lite_ctrl, 1402 NULL); 1403 if (handler->error) { 1404 media_entity_cleanup(&sd->entity); 1405 return handler->error; 1406 } 1407 1408 sd->ctrl_handler = handler; 1409 sd->internal_ops = &fimc_lite_subdev_internal_ops; 1410 sd->entity.function = MEDIA_ENT_F_PROC_VIDEO_SCALER; 1411 sd->entity.ops = &fimc_lite_subdev_media_ops; 1412 sd->owner = THIS_MODULE; 1413 v4l2_set_subdevdata(sd, fimc); 1414 1415 return 0; 1416 } 1417 1418 static void fimc_lite_unregister_capture_subdev(struct fimc_lite *fimc) 1419 { 1420 struct v4l2_subdev *sd = &fimc->subdev; 1421 1422 v4l2_device_unregister_subdev(sd); 1423 media_entity_cleanup(&sd->entity); 1424 v4l2_ctrl_handler_free(&fimc->ctrl_handler); 1425 v4l2_set_subdevdata(sd, NULL); 1426 } 1427 1428 static void fimc_lite_clk_put(struct fimc_lite *fimc) 1429 { 1430 if (IS_ERR(fimc->clock)) 1431 return; 1432 1433 clk_put(fimc->clock); 1434 fimc->clock = ERR_PTR(-EINVAL); 1435 } 1436 1437 static int fimc_lite_clk_get(struct fimc_lite *fimc) 1438 { 1439 fimc->clock = clk_get(&fimc->pdev->dev, FLITE_CLK_NAME); 1440 return PTR_ERR_OR_ZERO(fimc->clock); 1441 } 1442 1443 static const struct of_device_id flite_of_match[]; 1444 1445 static int fimc_lite_probe(struct platform_device *pdev) 1446 { 1447 struct flite_drvdata *drv_data = NULL; 1448 struct device *dev = &pdev->dev; 1449 const struct of_device_id *of_id; 1450 struct fimc_lite *fimc; 1451 struct resource *res; 1452 int ret; 1453 int irq; 1454 1455 if (!dev->of_node) 1456 return -ENODEV; 1457 1458 fimc = devm_kzalloc(dev, sizeof(*fimc), GFP_KERNEL); 1459 if (!fimc) 1460 return -ENOMEM; 1461 1462 of_id = of_match_node(flite_of_match, dev->of_node); 1463 if (of_id) 1464 drv_data = (struct flite_drvdata *)of_id->data; 1465 fimc->index = of_alias_get_id(dev->of_node, "fimc-lite"); 1466 1467 if (!drv_data || fimc->index >= drv_data->num_instances || 1468 fimc->index < 0) { 1469 dev_err(dev, "Wrong %pOF node alias\n", dev->of_node); 1470 return -EINVAL; 1471 } 1472 1473 fimc->dd = drv_data; 1474 fimc->pdev = pdev; 1475 1476 init_waitqueue_head(&fimc->irq_queue); 1477 spin_lock_init(&fimc->slock); 1478 mutex_init(&fimc->lock); 1479 1480 res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 1481 fimc->regs = devm_ioremap_resource(dev, res); 1482 if (IS_ERR(fimc->regs)) 1483 return PTR_ERR(fimc->regs); 1484 1485 irq = platform_get_irq(pdev, 0); 1486 if (irq < 0) 1487 return irq; 1488 1489 ret = fimc_lite_clk_get(fimc); 1490 if (ret) 1491 return ret; 1492 1493 ret = devm_request_irq(dev, irq, flite_irq_handler, 1494 0, dev_name(dev), fimc); 1495 if (ret) { 1496 dev_err(dev, "Failed to install irq (%d)\n", ret); 1497 goto err_clk_put; 1498 } 1499 1500 /* The video node will be created within the subdev's registered() op */ 1501 ret = fimc_lite_create_capture_subdev(fimc); 1502 if (ret) 1503 goto err_clk_put; 1504 1505 platform_set_drvdata(pdev, fimc); 1506 pm_runtime_enable(dev); 1507 1508 if (!pm_runtime_enabled(dev)) { 1509 ret = clk_prepare_enable(fimc->clock); 1510 if (ret < 0) 1511 goto err_sd; 1512 } 1513 1514 vb2_dma_contig_set_max_seg_size(dev, DMA_BIT_MASK(32)); 1515 1516 fimc_lite_set_default_config(fimc); 1517 1518 dev_dbg(dev, "FIMC-LITE.%d registered successfully\n", 1519 fimc->index); 1520 return 0; 1521 1522 err_sd: 1523 fimc_lite_unregister_capture_subdev(fimc); 1524 err_clk_put: 1525 fimc_lite_clk_put(fimc); 1526 return ret; 1527 } 1528 1529 #ifdef CONFIG_PM 1530 static int fimc_lite_runtime_resume(struct device *dev) 1531 { 1532 struct fimc_lite *fimc = dev_get_drvdata(dev); 1533 1534 clk_prepare_enable(fimc->clock); 1535 return 0; 1536 } 1537 1538 static int fimc_lite_runtime_suspend(struct device *dev) 1539 { 1540 struct fimc_lite *fimc = dev_get_drvdata(dev); 1541 1542 clk_disable_unprepare(fimc->clock); 1543 return 0; 1544 } 1545 #endif 1546 1547 #ifdef CONFIG_PM_SLEEP 1548 static int fimc_lite_resume(struct device *dev) 1549 { 1550 struct fimc_lite *fimc = dev_get_drvdata(dev); 1551 struct flite_buffer *buf; 1552 unsigned long flags; 1553 int i; 1554 1555 spin_lock_irqsave(&fimc->slock, flags); 1556 if (!test_and_clear_bit(ST_LPM, &fimc->state) || 1557 !test_bit(ST_FLITE_IN_USE, &fimc->state)) { 1558 spin_unlock_irqrestore(&fimc->slock, flags); 1559 return 0; 1560 } 1561 flite_hw_reset(fimc); 1562 spin_unlock_irqrestore(&fimc->slock, flags); 1563 1564 if (!test_and_clear_bit(ST_FLITE_SUSPENDED, &fimc->state)) 1565 return 0; 1566 1567 INIT_LIST_HEAD(&fimc->active_buf_q); 1568 fimc_pipeline_call(&fimc->ve, open, 1569 &fimc->ve.vdev.entity, false); 1570 fimc_lite_hw_init(fimc, atomic_read(&fimc->out_path) == FIMC_IO_ISP); 1571 clear_bit(ST_FLITE_SUSPENDED, &fimc->state); 1572 1573 for (i = 0; i < fimc->reqbufs_count; i++) { 1574 if (list_empty(&fimc->pending_buf_q)) 1575 break; 1576 buf = fimc_lite_pending_queue_pop(fimc); 1577 buffer_queue(&buf->vb.vb2_buf); 1578 } 1579 return 0; 1580 } 1581 1582 static int fimc_lite_suspend(struct device *dev) 1583 { 1584 struct fimc_lite *fimc = dev_get_drvdata(dev); 1585 bool suspend = test_bit(ST_FLITE_IN_USE, &fimc->state); 1586 int ret; 1587 1588 if (test_and_set_bit(ST_LPM, &fimc->state)) 1589 return 0; 1590 1591 ret = fimc_lite_stop_capture(fimc, suspend); 1592 if (ret < 0 || !fimc_lite_active(fimc)) 1593 return ret; 1594 1595 return fimc_pipeline_call(&fimc->ve, close); 1596 } 1597 #endif /* CONFIG_PM_SLEEP */ 1598 1599 static int fimc_lite_remove(struct platform_device *pdev) 1600 { 1601 struct fimc_lite *fimc = platform_get_drvdata(pdev); 1602 struct device *dev = &pdev->dev; 1603 1604 if (!pm_runtime_enabled(dev)) 1605 clk_disable_unprepare(fimc->clock); 1606 1607 pm_runtime_disable(dev); 1608 pm_runtime_set_suspended(dev); 1609 fimc_lite_unregister_capture_subdev(fimc); 1610 vb2_dma_contig_clear_max_seg_size(dev); 1611 fimc_lite_clk_put(fimc); 1612 1613 dev_info(dev, "Driver unloaded\n"); 1614 return 0; 1615 } 1616 1617 static const struct dev_pm_ops fimc_lite_pm_ops = { 1618 SET_SYSTEM_SLEEP_PM_OPS(fimc_lite_suspend, fimc_lite_resume) 1619 SET_RUNTIME_PM_OPS(fimc_lite_runtime_suspend, fimc_lite_runtime_resume, 1620 NULL) 1621 }; 1622 1623 /* EXYNOS4412 */ 1624 static struct flite_drvdata fimc_lite_drvdata_exynos4 = { 1625 .max_width = 8192, 1626 .max_height = 8192, 1627 .out_width_align = 8, 1628 .win_hor_offs_align = 2, 1629 .out_hor_offs_align = 8, 1630 .max_dma_bufs = 1, 1631 .num_instances = 2, 1632 }; 1633 1634 /* EXYNOS5250 */ 1635 static struct flite_drvdata fimc_lite_drvdata_exynos5 = { 1636 .max_width = 8192, 1637 .max_height = 8192, 1638 .out_width_align = 8, 1639 .win_hor_offs_align = 2, 1640 .out_hor_offs_align = 8, 1641 .max_dma_bufs = 32, 1642 .num_instances = 3, 1643 }; 1644 1645 static const struct of_device_id flite_of_match[] = { 1646 { 1647 .compatible = "samsung,exynos4212-fimc-lite", 1648 .data = &fimc_lite_drvdata_exynos4, 1649 }, 1650 { 1651 .compatible = "samsung,exynos5250-fimc-lite", 1652 .data = &fimc_lite_drvdata_exynos5, 1653 }, 1654 { /* sentinel */ }, 1655 }; 1656 MODULE_DEVICE_TABLE(of, flite_of_match); 1657 1658 static struct platform_driver fimc_lite_driver = { 1659 .probe = fimc_lite_probe, 1660 .remove = fimc_lite_remove, 1661 .driver = { 1662 .of_match_table = flite_of_match, 1663 .name = FIMC_LITE_DRV_NAME, 1664 .pm = &fimc_lite_pm_ops, 1665 } 1666 }; 1667 module_platform_driver(fimc_lite_driver); 1668 MODULE_LICENSE("GPL"); 1669 MODULE_ALIAS("platform:" FIMC_LITE_DRV_NAME); 1670