Lines Matching +full:stm32 +full:- +full:dcmi
1 // SPDX-License-Identifier: GPL-2.0
3 * Driver for STM32 Digital Camera Memory Interface
31 #include <media/v4l2-ctrls.h>
32 #include <media/v4l2-dev.h>
33 #include <media/v4l2-device.h>
34 #include <media/v4l2-event.h>
35 #include <media/v4l2-fwnode.h>
36 #include <media/v4l2-image-sizes.h>
37 #include <media/v4l2-ioctl.h>
38 #include <media/v4l2-rect.h>
39 #include <media/videobuf2-dma-contig.h>
41 #define DRV_NAME "stm32-dcmi"
43 /* Registers offset for DCMI */
203 static int dcmi_start_capture(struct stm32_dcmi *dcmi, struct dcmi_buf *buf);
205 static void dcmi_buffer_done(struct stm32_dcmi *dcmi, in dcmi_buffer_done() argument
215 list_del_init(&buf->list); in dcmi_buffer_done()
217 vbuf = &buf->vb; in dcmi_buffer_done()
219 vbuf->sequence = dcmi->sequence++; in dcmi_buffer_done()
220 vbuf->field = V4L2_FIELD_NONE; in dcmi_buffer_done()
221 vbuf->vb2_buf.timestamp = ktime_get_ns(); in dcmi_buffer_done()
222 vb2_set_plane_payload(&vbuf->vb2_buf, 0, bytesused); in dcmi_buffer_done()
223 vb2_buffer_done(&vbuf->vb2_buf, in dcmi_buffer_done()
225 dev_dbg(dcmi->dev, "buffer[%d] done seq=%d, bytesused=%zu\n", in dcmi_buffer_done()
226 vbuf->vb2_buf.index, vbuf->sequence, bytesused); in dcmi_buffer_done()
228 dcmi->buffers_count++; in dcmi_buffer_done()
229 dcmi->active = NULL; in dcmi_buffer_done()
232 static int dcmi_restart_capture(struct stm32_dcmi *dcmi) in dcmi_restart_capture() argument
236 spin_lock_irq(&dcmi->irqlock); in dcmi_restart_capture()
238 if (dcmi->state != RUNNING) { in dcmi_restart_capture()
239 spin_unlock_irq(&dcmi->irqlock); in dcmi_restart_capture()
240 return -EINVAL; in dcmi_restart_capture()
244 if (list_empty(&dcmi->buffers)) { in dcmi_restart_capture()
245 dev_dbg(dcmi->dev, "Capture restart is deferred to next buffer queueing\n"); in dcmi_restart_capture()
246 dcmi->state = WAIT_FOR_BUFFER; in dcmi_restart_capture()
247 spin_unlock_irq(&dcmi->irqlock); in dcmi_restart_capture()
250 buf = list_entry(dcmi->buffers.next, struct dcmi_buf, list); in dcmi_restart_capture()
251 dcmi->active = buf; in dcmi_restart_capture()
253 spin_unlock_irq(&dcmi->irqlock); in dcmi_restart_capture()
255 return dcmi_start_capture(dcmi, buf); in dcmi_restart_capture()
260 struct stm32_dcmi *dcmi = (struct stm32_dcmi *)param; in dcmi_dma_callback() local
263 struct dcmi_buf *buf = dcmi->active; in dcmi_dma_callback()
265 spin_lock_irq(&dcmi->irqlock); in dcmi_dma_callback()
268 status = dmaengine_tx_status(dcmi->dma_chan, dcmi->dma_cookie, &state); in dcmi_dma_callback()
272 dev_dbg(dcmi->dev, "%s: Received DMA_IN_PROGRESS\n", __func__); in dcmi_dma_callback()
275 dev_err(dcmi->dev, "%s: Received DMA_PAUSED\n", __func__); in dcmi_dma_callback()
278 dev_err(dcmi->dev, "%s: Received DMA_ERROR\n", __func__); in dcmi_dma_callback()
281 dcmi_buffer_done(dcmi, buf, 0, -EIO); in dcmi_dma_callback()
284 dev_dbg(dcmi->dev, "%s: Received DMA_COMPLETE\n", __func__); in dcmi_dma_callback()
287 dcmi_buffer_done(dcmi, buf, buf->size, 0); in dcmi_dma_callback()
289 spin_unlock_irq(&dcmi->irqlock); in dcmi_dma_callback()
292 if (dcmi_restart_capture(dcmi)) in dcmi_dma_callback()
293 dev_err(dcmi->dev, "%s: Cannot restart capture on DMA complete\n", in dcmi_dma_callback()
297 dev_err(dcmi->dev, "%s: Received unknown status\n", __func__); in dcmi_dma_callback()
301 spin_unlock_irq(&dcmi->irqlock); in dcmi_dma_callback()
304 static int dcmi_start_dma(struct stm32_dcmi *dcmi, in dcmi_start_dma() argument
313 config.src_addr = (dma_addr_t)dcmi->res->start + DCMI_DR; in dcmi_start_dma()
319 ret = dmaengine_slave_config(dcmi->dma_chan, &config); in dcmi_start_dma()
321 dev_err(dcmi->dev, "%s: DMA channel config failed (%d)\n", in dcmi_start_dma()
331 mutex_lock(&dcmi->dma_lock); in dcmi_start_dma()
334 desc = dmaengine_prep_slave_single(dcmi->dma_chan, buf->paddr, in dcmi_start_dma()
335 buf->size, in dcmi_start_dma()
339 dev_err(dcmi->dev, "%s: DMA dmaengine_prep_slave_single failed for buffer phy=%pad size=%zu\n", in dcmi_start_dma()
340 __func__, &buf->paddr, buf->size); in dcmi_start_dma()
341 mutex_unlock(&dcmi->dma_lock); in dcmi_start_dma()
342 return -EINVAL; in dcmi_start_dma()
346 desc->callback = dcmi_dma_callback; in dcmi_start_dma()
347 desc->callback_param = dcmi; in dcmi_start_dma()
350 dcmi->dma_cookie = dmaengine_submit(desc); in dcmi_start_dma()
351 if (dma_submit_error(dcmi->dma_cookie)) { in dcmi_start_dma()
352 dev_err(dcmi->dev, "%s: DMA submission failed\n", __func__); in dcmi_start_dma()
353 mutex_unlock(&dcmi->dma_lock); in dcmi_start_dma()
354 return -ENXIO; in dcmi_start_dma()
357 mutex_unlock(&dcmi->dma_lock); in dcmi_start_dma()
359 dma_async_issue_pending(dcmi->dma_chan); in dcmi_start_dma()
364 static int dcmi_start_capture(struct stm32_dcmi *dcmi, struct dcmi_buf *buf) in dcmi_start_capture() argument
369 return -EINVAL; in dcmi_start_capture()
371 ret = dcmi_start_dma(dcmi, buf); in dcmi_start_capture()
373 dcmi->errors_count++; in dcmi_start_capture()
378 reg_set(dcmi->regs, DCMI_CR, CR_CAPTURE); in dcmi_start_capture()
383 static void dcmi_set_crop(struct stm32_dcmi *dcmi) in dcmi_set_crop() argument
388 size = ((dcmi->crop.height - 1) << 16) | in dcmi_set_crop()
389 ((dcmi->crop.width << 1) - 1); in dcmi_set_crop()
390 reg_write(dcmi->regs, DCMI_CWSIZE, size); in dcmi_set_crop()
393 start = ((dcmi->crop.top) << 16) | in dcmi_set_crop()
394 ((dcmi->crop.left << 1)); in dcmi_set_crop()
395 reg_write(dcmi->regs, DCMI_CWSTRT, start); in dcmi_set_crop()
397 dev_dbg(dcmi->dev, "Cropping to %ux%u@%u:%u\n", in dcmi_set_crop()
398 dcmi->crop.width, dcmi->crop.height, in dcmi_set_crop()
399 dcmi->crop.left, dcmi->crop.top); in dcmi_set_crop()
402 reg_set(dcmi->regs, DCMI_CR, CR_CROP); in dcmi_set_crop()
405 static void dcmi_process_jpeg(struct stm32_dcmi *dcmi) in dcmi_process_jpeg() argument
409 struct dcmi_buf *buf = dcmi->active; in dcmi_process_jpeg()
425 dmaengine_synchronize(dcmi->dma_chan); in dcmi_process_jpeg()
428 status = dmaengine_tx_status(dcmi->dma_chan, dcmi->dma_cookie, &state); in dcmi_process_jpeg()
429 if (status != DMA_ERROR && state.residue < buf->size) { in dcmi_process_jpeg()
431 dcmi_buffer_done(dcmi, buf, buf->size - state.residue, 0); in dcmi_process_jpeg()
433 dcmi->errors_count++; in dcmi_process_jpeg()
434 dev_err(dcmi->dev, "%s: Cannot get JPEG size from DMA\n", in dcmi_process_jpeg()
437 dcmi_buffer_done(dcmi, buf, 0, -EIO); in dcmi_process_jpeg()
441 dmaengine_terminate_all(dcmi->dma_chan); in dcmi_process_jpeg()
444 if (dcmi_restart_capture(dcmi)) in dcmi_process_jpeg()
445 dev_err(dcmi->dev, "%s: Cannot restart capture on JPEG received\n", in dcmi_process_jpeg()
451 struct stm32_dcmi *dcmi = arg; in dcmi_irq_thread() local
453 spin_lock_irq(&dcmi->irqlock); in dcmi_irq_thread()
455 if (dcmi->misr & IT_OVR) { in dcmi_irq_thread()
456 dcmi->overrun_count++; in dcmi_irq_thread()
457 if (dcmi->overrun_count > OVERRUN_ERROR_THRESHOLD) in dcmi_irq_thread()
458 dcmi->errors_count++; in dcmi_irq_thread()
460 if (dcmi->misr & IT_ERR) in dcmi_irq_thread()
461 dcmi->errors_count++; in dcmi_irq_thread()
463 if (dcmi->sd_format->fourcc == V4L2_PIX_FMT_JPEG && in dcmi_irq_thread()
464 dcmi->misr & IT_FRAME) { in dcmi_irq_thread()
466 spin_unlock_irq(&dcmi->irqlock); in dcmi_irq_thread()
467 dcmi_process_jpeg(dcmi); in dcmi_irq_thread()
471 spin_unlock_irq(&dcmi->irqlock); in dcmi_irq_thread()
477 struct stm32_dcmi *dcmi = arg; in dcmi_irq_callback() local
480 spin_lock_irqsave(&dcmi->irqlock, flags); in dcmi_irq_callback()
482 dcmi->misr = reg_read(dcmi->regs, DCMI_MIS); in dcmi_irq_callback()
485 reg_set(dcmi->regs, DCMI_ICR, IT_FRAME | IT_OVR | IT_ERR); in dcmi_irq_callback()
487 spin_unlock_irqrestore(&dcmi->irqlock, flags); in dcmi_irq_callback()
498 struct stm32_dcmi *dcmi = vb2_get_drv_priv(vq); in dcmi_queue_setup() local
501 size = dcmi->fmt.fmt.pix.sizeimage; in dcmi_queue_setup()
505 return sizes[0] < size ? -EINVAL : 0; in dcmi_queue_setup()
510 dev_dbg(dcmi->dev, "Setup queue, count=%d, size=%d\n", in dcmi_queue_setup()
521 INIT_LIST_HEAD(&buf->list); in dcmi_buf_init()
528 struct stm32_dcmi *dcmi = vb2_get_drv_priv(vb->vb2_queue); in dcmi_buf_prepare() local
533 size = dcmi->fmt.fmt.pix.sizeimage; in dcmi_buf_prepare()
536 dev_err(dcmi->dev, "%s data will not fit into plane (%lu < %lu)\n", in dcmi_buf_prepare()
538 return -EINVAL; in dcmi_buf_prepare()
543 if (!buf->prepared) { in dcmi_buf_prepare()
545 buf->paddr = in dcmi_buf_prepare()
546 vb2_dma_contig_plane_dma_addr(&buf->vb.vb2_buf, 0); in dcmi_buf_prepare()
547 buf->size = vb2_plane_size(&buf->vb.vb2_buf, 0); in dcmi_buf_prepare()
548 buf->prepared = true; in dcmi_buf_prepare()
550 vb2_set_plane_payload(&buf->vb.vb2_buf, 0, buf->size); in dcmi_buf_prepare()
552 dev_dbg(dcmi->dev, "buffer[%d] phy=%pad size=%zu\n", in dcmi_buf_prepare()
553 vb->index, &buf->paddr, buf->size); in dcmi_buf_prepare()
561 struct stm32_dcmi *dcmi = vb2_get_drv_priv(vb->vb2_queue); in dcmi_buf_queue() local
565 spin_lock_irq(&dcmi->irqlock); in dcmi_buf_queue()
568 list_add_tail(&buf->list, &dcmi->buffers); in dcmi_buf_queue()
570 if (dcmi->state == WAIT_FOR_BUFFER) { in dcmi_buf_queue()
571 dcmi->state = RUNNING; in dcmi_buf_queue()
572 dcmi->active = buf; in dcmi_buf_queue()
574 dev_dbg(dcmi->dev, "Starting capture on buffer[%d] queued\n", in dcmi_buf_queue()
575 buf->vb.vb2_buf.index); in dcmi_buf_queue()
577 spin_unlock_irq(&dcmi->irqlock); in dcmi_buf_queue()
578 if (dcmi_start_capture(dcmi, buf)) in dcmi_buf_queue()
579 dev_err(dcmi->dev, "%s: Cannot restart capture on overflow or error\n", in dcmi_buf_queue()
584 spin_unlock_irq(&dcmi->irqlock); in dcmi_buf_queue()
587 static struct media_entity *dcmi_find_source(struct stm32_dcmi *dcmi) in dcmi_find_source() argument
589 struct media_entity *entity = &dcmi->vdev->entity; in dcmi_find_source()
594 pad = &entity->pads[0]; in dcmi_find_source()
595 if (!(pad->flags & MEDIA_PAD_FL_SINK)) in dcmi_find_source()
599 if (!pad || !is_media_entity_v4l2_subdev(pad->entity)) in dcmi_find_source()
602 entity = pad->entity; in dcmi_find_source()
608 static int dcmi_pipeline_s_fmt(struct stm32_dcmi *dcmi, in dcmi_pipeline_s_fmt() argument
612 struct media_entity *entity = &dcmi->entity.source->entity; in dcmi_pipeline_s_fmt()
629 for (i = 0; i < entity->num_pads; i++) { in dcmi_pipeline_s_fmt()
630 pad = &entity->pads[i]; in dcmi_pipeline_s_fmt()
631 if (pad->flags & MEDIA_PAD_FL_SOURCE) { in dcmi_pipeline_s_fmt()
646 dev_dbg(dcmi->dev, "\"%s\":%d pad format set to 0x%x %ux%u\n", in dcmi_pipeline_s_fmt()
647 subdev->name, pad->index, format->format.code, in dcmi_pipeline_s_fmt()
648 format->format.width, format->format.height); in dcmi_pipeline_s_fmt()
650 fmt.pad = pad->index; in dcmi_pipeline_s_fmt()
653 dev_err(dcmi->dev, "%s: Failed to set format 0x%x %ux%u on \"%s\":%d pad (%d)\n", in dcmi_pipeline_s_fmt()
654 __func__, format->format.code, in dcmi_pipeline_s_fmt()
655 format->format.width, format->format.height, in dcmi_pipeline_s_fmt()
656 subdev->name, pad->index, ret); in dcmi_pipeline_s_fmt()
660 if (fmt.format.code != format->format.code || in dcmi_pipeline_s_fmt()
661 fmt.format.width != format->format.width || in dcmi_pipeline_s_fmt()
662 fmt.format.height != format->format.height) { in dcmi_pipeline_s_fmt()
663 dev_dbg(dcmi->dev, "\"%s\":%d pad format has been changed to 0x%x %ux%u\n", in dcmi_pipeline_s_fmt()
664 subdev->name, pad->index, fmt.format.code, in dcmi_pipeline_s_fmt()
670 if (!sink_pad || !is_media_entity_v4l2_subdev(sink_pad->entity)) in dcmi_pipeline_s_fmt()
673 entity = sink_pad->entity; in dcmi_pipeline_s_fmt()
680 static int dcmi_pipeline_s_stream(struct stm32_dcmi *dcmi, int state) in dcmi_pipeline_s_stream() argument
682 struct media_entity *entity = &dcmi->vdev->entity; in dcmi_pipeline_s_stream()
689 pad = &entity->pads[0]; in dcmi_pipeline_s_stream()
690 if (!(pad->flags & MEDIA_PAD_FL_SINK)) in dcmi_pipeline_s_stream()
694 if (!pad || !is_media_entity_v4l2_subdev(pad->entity)) in dcmi_pipeline_s_stream()
697 entity = pad->entity; in dcmi_pipeline_s_stream()
701 if (ret < 0 && ret != -ENOIOCTLCMD) { in dcmi_pipeline_s_stream()
702 dev_err(dcmi->dev, "%s: \"%s\" failed to %s streaming (%d)\n", in dcmi_pipeline_s_stream()
703 __func__, subdev->name, in dcmi_pipeline_s_stream()
708 dev_dbg(dcmi->dev, "\"%s\" is %s\n", in dcmi_pipeline_s_stream()
709 subdev->name, state ? "started" : "stopped"); in dcmi_pipeline_s_stream()
715 static int dcmi_pipeline_start(struct stm32_dcmi *dcmi) in dcmi_pipeline_start() argument
717 return dcmi_pipeline_s_stream(dcmi, 1); in dcmi_pipeline_start()
720 static void dcmi_pipeline_stop(struct stm32_dcmi *dcmi) in dcmi_pipeline_stop() argument
722 dcmi_pipeline_s_stream(dcmi, 0); in dcmi_pipeline_stop()
727 struct stm32_dcmi *dcmi = vb2_get_drv_priv(vq); in dcmi_start_streaming() local
732 ret = pm_runtime_get_sync(dcmi->dev); in dcmi_start_streaming()
734 dev_err(dcmi->dev, "%s: Failed to start streaming, cannot get sync (%d)\n", in dcmi_start_streaming()
739 ret = media_pipeline_start(&dcmi->vdev->entity, &dcmi->pipeline); in dcmi_start_streaming()
741 dev_err(dcmi->dev, "%s: Failed to start streaming, media pipeline start error (%d)\n", in dcmi_start_streaming()
746 ret = dcmi_pipeline_start(dcmi); in dcmi_start_streaming()
750 spin_lock_irq(&dcmi->irqlock); in dcmi_start_streaming()
753 switch (dcmi->bus.bus_width) { in dcmi_start_streaming()
769 if (dcmi->bus.flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH) in dcmi_start_streaming()
773 if (dcmi->bus.flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) in dcmi_start_streaming()
777 if (dcmi->bus.flags & V4L2_MBUS_PCLK_SAMPLE_RISING) in dcmi_start_streaming()
780 reg_write(dcmi->regs, DCMI_CR, val); in dcmi_start_streaming()
783 if (dcmi->do_crop) in dcmi_start_streaming()
784 dcmi_set_crop(dcmi); in dcmi_start_streaming()
787 if (dcmi->sd_format->fourcc == V4L2_PIX_FMT_JPEG) in dcmi_start_streaming()
788 reg_set(dcmi->regs, DCMI_CR, CR_CM);/* Snapshot mode */ in dcmi_start_streaming()
790 /* Enable dcmi */ in dcmi_start_streaming()
791 reg_set(dcmi->regs, DCMI_CR, CR_ENABLE); in dcmi_start_streaming()
793 dcmi->sequence = 0; in dcmi_start_streaming()
794 dcmi->errors_count = 0; in dcmi_start_streaming()
795 dcmi->overrun_count = 0; in dcmi_start_streaming()
796 dcmi->buffers_count = 0; in dcmi_start_streaming()
802 if (list_empty(&dcmi->buffers)) { in dcmi_start_streaming()
803 dev_dbg(dcmi->dev, "Start streaming is deferred to next buffer queueing\n"); in dcmi_start_streaming()
804 dcmi->state = WAIT_FOR_BUFFER; in dcmi_start_streaming()
805 spin_unlock_irq(&dcmi->irqlock); in dcmi_start_streaming()
809 buf = list_entry(dcmi->buffers.next, struct dcmi_buf, list); in dcmi_start_streaming()
810 dcmi->active = buf; in dcmi_start_streaming()
812 dcmi->state = RUNNING; in dcmi_start_streaming()
814 dev_dbg(dcmi->dev, "Start streaming, starting capture\n"); in dcmi_start_streaming()
816 spin_unlock_irq(&dcmi->irqlock); in dcmi_start_streaming()
817 ret = dcmi_start_capture(dcmi, buf); in dcmi_start_streaming()
819 dev_err(dcmi->dev, "%s: Start streaming failed, cannot start capture\n", in dcmi_start_streaming()
825 if (dcmi->sd_format->fourcc == V4L2_PIX_FMT_JPEG) in dcmi_start_streaming()
826 reg_set(dcmi->regs, DCMI_IER, IT_FRAME | IT_OVR | IT_ERR); in dcmi_start_streaming()
828 reg_set(dcmi->regs, DCMI_IER, IT_OVR | IT_ERR); in dcmi_start_streaming()
833 dcmi_pipeline_stop(dcmi); in dcmi_start_streaming()
836 media_pipeline_stop(&dcmi->vdev->entity); in dcmi_start_streaming()
839 pm_runtime_put(dcmi->dev); in dcmi_start_streaming()
840 spin_lock_irq(&dcmi->irqlock); in dcmi_start_streaming()
845 list_for_each_entry_safe(buf, node, &dcmi->buffers, list) { in dcmi_start_streaming()
846 list_del_init(&buf->list); in dcmi_start_streaming()
847 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_QUEUED); in dcmi_start_streaming()
849 dcmi->active = NULL; in dcmi_start_streaming()
850 spin_unlock_irq(&dcmi->irqlock); in dcmi_start_streaming()
857 struct stm32_dcmi *dcmi = vb2_get_drv_priv(vq); in dcmi_stop_streaming() local
860 dcmi_pipeline_stop(dcmi); in dcmi_stop_streaming()
862 media_pipeline_stop(&dcmi->vdev->entity); in dcmi_stop_streaming()
864 spin_lock_irq(&dcmi->irqlock); in dcmi_stop_streaming()
867 reg_clear(dcmi->regs, DCMI_IER, IT_FRAME | IT_OVR | IT_ERR); in dcmi_stop_streaming()
869 /* Disable DCMI */ in dcmi_stop_streaming()
870 reg_clear(dcmi->regs, DCMI_CR, CR_ENABLE); in dcmi_stop_streaming()
873 list_for_each_entry_safe(buf, node, &dcmi->buffers, list) { in dcmi_stop_streaming()
874 list_del_init(&buf->list); in dcmi_stop_streaming()
875 vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); in dcmi_stop_streaming()
878 dcmi->active = NULL; in dcmi_stop_streaming()
879 dcmi->state = STOPPED; in dcmi_stop_streaming()
881 spin_unlock_irq(&dcmi->irqlock); in dcmi_stop_streaming()
884 mutex_lock(&dcmi->dma_lock); in dcmi_stop_streaming()
885 dmaengine_terminate_all(dcmi->dma_chan); in dcmi_stop_streaming()
886 mutex_unlock(&dcmi->dma_lock); in dcmi_stop_streaming()
888 pm_runtime_put(dcmi->dev); in dcmi_stop_streaming()
890 if (dcmi->errors_count) in dcmi_stop_streaming()
891 dev_warn(dcmi->dev, "Some errors found while streaming: errors=%d (overrun=%d), buffers=%d\n", in dcmi_stop_streaming()
892 dcmi->errors_count, dcmi->overrun_count, in dcmi_stop_streaming()
893 dcmi->buffers_count); in dcmi_stop_streaming()
894 dev_dbg(dcmi->dev, "Stop streaming, errors=%d (overrun=%d), buffers=%d\n", in dcmi_stop_streaming()
895 dcmi->errors_count, dcmi->overrun_count, in dcmi_stop_streaming()
896 dcmi->buffers_count); in dcmi_stop_streaming()
913 struct stm32_dcmi *dcmi = video_drvdata(file); in dcmi_g_fmt_vid_cap() local
915 *fmt = dcmi->fmt; in dcmi_g_fmt_vid_cap()
920 static const struct dcmi_format *find_format_by_fourcc(struct stm32_dcmi *dcmi, in find_format_by_fourcc() argument
923 unsigned int num_formats = dcmi->num_of_sd_formats; in find_format_by_fourcc()
928 fmt = dcmi->sd_formats[i]; in find_format_by_fourcc()
929 if (fmt->fourcc == fourcc) in find_format_by_fourcc()
936 static void __find_outer_frame_size(struct stm32_dcmi *dcmi, in __find_outer_frame_size() argument
944 for (i = 0; i < dcmi->num_of_sd_framesizes; i++) { in __find_outer_frame_size()
945 struct dcmi_framesize *fsize = &dcmi->sd_framesizes[i]; in __find_outer_frame_size()
946 int w_err = (fsize->width - pix->width); in __find_outer_frame_size()
947 int h_err = (fsize->height - pix->height); in __find_outer_frame_size()
956 match = &dcmi->sd_framesizes[0]; in __find_outer_frame_size()
961 static int dcmi_try_fmt(struct stm32_dcmi *dcmi, struct v4l2_format *f, in dcmi_try_fmt() argument
967 struct v4l2_pix_format *pix = &f->fmt.pix; in dcmi_try_fmt()
975 sd_fmt = find_format_by_fourcc(dcmi, pix->pixelformat); in dcmi_try_fmt()
977 if (!dcmi->num_of_sd_formats) in dcmi_try_fmt()
978 return -ENODATA; in dcmi_try_fmt()
980 sd_fmt = dcmi->sd_formats[dcmi->num_of_sd_formats - 1]; in dcmi_try_fmt()
981 pix->pixelformat = sd_fmt->fourcc; in dcmi_try_fmt()
985 pix->width = clamp(pix->width, MIN_WIDTH, MAX_WIDTH); in dcmi_try_fmt()
986 pix->height = clamp(pix->height, MIN_HEIGHT, MAX_HEIGHT); in dcmi_try_fmt()
989 do_crop = dcmi->do_crop && (pix->pixelformat != V4L2_PIX_FMT_JPEG); in dcmi_try_fmt()
991 if (do_crop && dcmi->num_of_sd_framesizes) { in dcmi_try_fmt()
997 __find_outer_frame_size(dcmi, pix, &outer_sd_fsize); in dcmi_try_fmt()
998 pix->width = outer_sd_fsize.width; in dcmi_try_fmt()
999 pix->height = outer_sd_fsize.height; in dcmi_try_fmt()
1002 v4l2_fill_mbus_format(&format.format, pix, sd_fmt->mbus_code); in dcmi_try_fmt()
1003 ret = v4l2_subdev_call(dcmi->entity.source, pad, set_fmt, in dcmi_try_fmt()
1012 sd_fsize.width = pix->width; in dcmi_try_fmt()
1013 sd_fsize.height = pix->height; in dcmi_try_fmt()
1016 struct v4l2_rect c = dcmi->crop; in dcmi_try_fmt()
1025 max_rect.width = pix->width; in dcmi_try_fmt()
1026 max_rect.height = pix->height; in dcmi_try_fmt()
1028 c.top = clamp_t(s32, c.top, 0, pix->height - c.height); in dcmi_try_fmt()
1029 c.left = clamp_t(s32, c.left, 0, pix->width - c.width); in dcmi_try_fmt()
1030 dcmi->crop = c; in dcmi_try_fmt()
1033 pix->width = dcmi->crop.width; in dcmi_try_fmt()
1034 pix->height = dcmi->crop.height; in dcmi_try_fmt()
1037 pix->field = V4L2_FIELD_NONE; in dcmi_try_fmt()
1038 pix->bytesperline = pix->width * sd_fmt->bpp; in dcmi_try_fmt()
1039 pix->sizeimage = pix->bytesperline * pix->height; in dcmi_try_fmt()
1049 static int dcmi_set_fmt(struct stm32_dcmi *dcmi, struct v4l2_format *f) in dcmi_set_fmt() argument
1057 struct v4l2_pix_format *pix = &f->fmt.pix; in dcmi_set_fmt()
1066 ret = dcmi_try_fmt(dcmi, f, &sd_format, &sd_framesize); in dcmi_set_fmt()
1071 if (pix->pixelformat == V4L2_PIX_FMT_JPEG) in dcmi_set_fmt()
1072 dcmi->do_crop = false; in dcmi_set_fmt()
1076 sd_format->mbus_code); in dcmi_set_fmt()
1077 mf->width = sd_framesize.width; in dcmi_set_fmt()
1078 mf->height = sd_framesize.height; in dcmi_set_fmt()
1080 ret = dcmi_pipeline_s_fmt(dcmi, NULL, &format); in dcmi_set_fmt()
1084 dev_dbg(dcmi->dev, "Sensor format set to 0x%x %ux%u\n", in dcmi_set_fmt()
1085 mf->code, mf->width, mf->height); in dcmi_set_fmt()
1086 dev_dbg(dcmi->dev, "Buffer format set to %4.4s %ux%u\n", in dcmi_set_fmt()
1087 (char *)&pix->pixelformat, in dcmi_set_fmt()
1088 pix->width, pix->height); in dcmi_set_fmt()
1090 dcmi->fmt = *f; in dcmi_set_fmt()
1091 dcmi->sd_format = sd_format; in dcmi_set_fmt()
1092 dcmi->sd_framesize = sd_framesize; in dcmi_set_fmt()
1100 struct stm32_dcmi *dcmi = video_drvdata(file); in dcmi_s_fmt_vid_cap() local
1102 if (vb2_is_streaming(&dcmi->queue)) in dcmi_s_fmt_vid_cap()
1103 return -EBUSY; in dcmi_s_fmt_vid_cap()
1105 return dcmi_set_fmt(dcmi, f); in dcmi_s_fmt_vid_cap()
1111 struct stm32_dcmi *dcmi = video_drvdata(file); in dcmi_try_fmt_vid_cap() local
1113 return dcmi_try_fmt(dcmi, f, NULL, NULL); in dcmi_try_fmt_vid_cap()
1119 struct stm32_dcmi *dcmi = video_drvdata(file); in dcmi_enum_fmt_vid_cap() local
1121 if (f->index >= dcmi->num_of_sd_formats) in dcmi_enum_fmt_vid_cap()
1122 return -EINVAL; in dcmi_enum_fmt_vid_cap()
1124 f->pixelformat = dcmi->sd_formats[f->index]->fourcc; in dcmi_enum_fmt_vid_cap()
1128 static int dcmi_get_sensor_format(struct stm32_dcmi *dcmi, in dcmi_get_sensor_format() argument
1136 ret = v4l2_subdev_call(dcmi->entity.source, pad, get_fmt, NULL, &fmt); in dcmi_get_sensor_format()
1145 static int dcmi_set_sensor_format(struct stm32_dcmi *dcmi, in dcmi_set_sensor_format() argument
1155 sd_fmt = find_format_by_fourcc(dcmi, pix->pixelformat); in dcmi_set_sensor_format()
1157 if (!dcmi->num_of_sd_formats) in dcmi_set_sensor_format()
1158 return -ENODATA; in dcmi_set_sensor_format()
1160 sd_fmt = dcmi->sd_formats[dcmi->num_of_sd_formats - 1]; in dcmi_set_sensor_format()
1161 pix->pixelformat = sd_fmt->fourcc; in dcmi_set_sensor_format()
1164 v4l2_fill_mbus_format(&format.format, pix, sd_fmt->mbus_code); in dcmi_set_sensor_format()
1165 ret = v4l2_subdev_call(dcmi->entity.source, pad, set_fmt, in dcmi_set_sensor_format()
1173 static int dcmi_get_sensor_bounds(struct stm32_dcmi *dcmi, in dcmi_get_sensor_bounds() argument
1188 ret = v4l2_subdev_call(dcmi->entity.source, pad, get_selection, in dcmi_get_sensor_bounds()
1192 if (ret != -ENOIOCTLCMD) in dcmi_get_sensor_bounds()
1203 for (i = 0; i < dcmi->num_of_sd_framesizes; i++) { in dcmi_get_sensor_bounds()
1204 struct dcmi_framesize *fsize = &dcmi->sd_framesizes[i]; in dcmi_get_sensor_bounds()
1205 unsigned int pixsize = fsize->width * fsize->height; in dcmi_get_sensor_bounds()
1209 max_width = fsize->width; in dcmi_get_sensor_bounds()
1210 max_height = fsize->height; in dcmi_get_sensor_bounds()
1214 r->top = 0; in dcmi_get_sensor_bounds()
1215 r->left = 0; in dcmi_get_sensor_bounds()
1216 r->width = max_width; in dcmi_get_sensor_bounds()
1217 r->height = max_height; in dcmi_get_sensor_bounds()
1225 ret = dcmi_get_sensor_format(dcmi, &pix); in dcmi_get_sensor_bounds()
1229 r->top = 0; in dcmi_get_sensor_bounds()
1230 r->left = 0; in dcmi_get_sensor_bounds()
1231 r->width = pix.width; in dcmi_get_sensor_bounds()
1232 r->height = pix.height; in dcmi_get_sensor_bounds()
1240 struct stm32_dcmi *dcmi = video_drvdata(file); in dcmi_g_selection() local
1242 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) in dcmi_g_selection()
1243 return -EINVAL; in dcmi_g_selection()
1245 switch (s->target) { in dcmi_g_selection()
1248 s->r = dcmi->sd_bounds; in dcmi_g_selection()
1251 if (dcmi->do_crop) { in dcmi_g_selection()
1252 s->r = dcmi->crop; in dcmi_g_selection()
1254 s->r.top = 0; in dcmi_g_selection()
1255 s->r.left = 0; in dcmi_g_selection()
1256 s->r.width = dcmi->fmt.fmt.pix.width; in dcmi_g_selection()
1257 s->r.height = dcmi->fmt.fmt.pix.height; in dcmi_g_selection()
1261 return -EINVAL; in dcmi_g_selection()
1270 struct stm32_dcmi *dcmi = video_drvdata(file); in dcmi_s_selection() local
1271 struct v4l2_rect r = s->r; in dcmi_s_selection()
1275 if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE || in dcmi_s_selection()
1276 s->target != V4L2_SEL_TGT_CROP) in dcmi_s_selection()
1277 return -EINVAL; in dcmi_s_selection()
1280 pix.pixelformat = dcmi->fmt.fmt.pix.pixelformat; in dcmi_s_selection()
1281 pix.width = dcmi->sd_bounds.width; in dcmi_s_selection()
1282 pix.height = dcmi->sd_bounds.height; in dcmi_s_selection()
1283 dcmi_set_sensor_format(dcmi, &pix); in dcmi_s_selection()
1295 r.top = clamp_t(s32, r.top, 0, pix.height - r.height); in dcmi_s_selection()
1296 r.left = clamp_t(s32, r.left, 0, pix.width - r.width); in dcmi_s_selection()
1298 if (!(r.top == dcmi->sd_bounds.top && in dcmi_s_selection()
1299 r.left == dcmi->sd_bounds.left && in dcmi_s_selection()
1300 r.width == dcmi->sd_bounds.width && in dcmi_s_selection()
1301 r.height == dcmi->sd_bounds.height)) { in dcmi_s_selection()
1303 dcmi->do_crop = true; in dcmi_s_selection()
1304 dcmi->crop = r; in dcmi_s_selection()
1305 dev_dbg(dcmi->dev, "s_selection: crop %ux%u@(%u,%u) from %ux%u\n", in dcmi_s_selection()
1310 dcmi->do_crop = false; in dcmi_s_selection()
1311 dev_dbg(dcmi->dev, "s_selection: crop is disabled\n"); in dcmi_s_selection()
1314 s->r = r; in dcmi_s_selection()
1321 strscpy(cap->driver, DRV_NAME, sizeof(cap->driver)); in dcmi_querycap()
1322 strscpy(cap->card, "STM32 Camera Memory Interface", in dcmi_querycap()
1323 sizeof(cap->card)); in dcmi_querycap()
1324 strscpy(cap->bus_info, "platform:dcmi", sizeof(cap->bus_info)); in dcmi_querycap()
1331 if (i->index != 0) in dcmi_enum_input()
1332 return -EINVAL; in dcmi_enum_input()
1334 i->type = V4L2_INPUT_TYPE_CAMERA; in dcmi_enum_input()
1335 strscpy(i->name, "Camera", sizeof(i->name)); in dcmi_enum_input()
1348 return -EINVAL; in dcmi_s_input()
1355 struct stm32_dcmi *dcmi = video_drvdata(file); in dcmi_enum_framesizes() local
1358 .index = fsize->index, in dcmi_enum_framesizes()
1363 sd_fmt = find_format_by_fourcc(dcmi, fsize->pixel_format); in dcmi_enum_framesizes()
1365 return -EINVAL; in dcmi_enum_framesizes()
1367 fse.code = sd_fmt->mbus_code; in dcmi_enum_framesizes()
1369 ret = v4l2_subdev_call(dcmi->entity.source, pad, enum_frame_size, in dcmi_enum_framesizes()
1374 fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE; in dcmi_enum_framesizes()
1375 fsize->discrete.width = fse.max_width; in dcmi_enum_framesizes()
1376 fsize->discrete.height = fse.max_height; in dcmi_enum_framesizes()
1384 struct stm32_dcmi *dcmi = video_drvdata(file); in dcmi_g_parm() local
1386 return v4l2_g_parm_cap(video_devdata(file), dcmi->entity.source, p); in dcmi_g_parm()
1392 struct stm32_dcmi *dcmi = video_drvdata(file); in dcmi_s_parm() local
1394 return v4l2_s_parm_cap(video_devdata(file), dcmi->entity.source, p); in dcmi_s_parm()
1400 struct stm32_dcmi *dcmi = video_drvdata(file); in dcmi_enum_frameintervals() local
1403 .index = fival->index, in dcmi_enum_frameintervals()
1404 .width = fival->width, in dcmi_enum_frameintervals()
1405 .height = fival->height, in dcmi_enum_frameintervals()
1410 sd_fmt = find_format_by_fourcc(dcmi, fival->pixel_format); in dcmi_enum_frameintervals()
1412 return -EINVAL; in dcmi_enum_frameintervals()
1414 fie.code = sd_fmt->mbus_code; in dcmi_enum_frameintervals()
1416 ret = v4l2_subdev_call(dcmi->entity.source, pad, in dcmi_enum_frameintervals()
1421 fival->type = V4L2_FRMIVAL_TYPE_DISCRETE; in dcmi_enum_frameintervals()
1422 fival->discrete = fie.interval; in dcmi_enum_frameintervals()
1428 { .compatible = "st,stm32-dcmi"},
1435 struct stm32_dcmi *dcmi = video_drvdata(file); in dcmi_open() local
1436 struct v4l2_subdev *sd = dcmi->entity.source; in dcmi_open()
1439 if (mutex_lock_interruptible(&dcmi->lock)) in dcmi_open()
1440 return -ERESTARTSYS; in dcmi_open()
1450 if (ret < 0 && ret != -ENOIOCTLCMD) in dcmi_open()
1453 ret = dcmi_set_fmt(dcmi, &dcmi->fmt); in dcmi_open()
1460 mutex_unlock(&dcmi->lock); in dcmi_open()
1466 struct stm32_dcmi *dcmi = video_drvdata(file); in dcmi_release() local
1467 struct v4l2_subdev *sd = dcmi->entity.source; in dcmi_release()
1471 mutex_lock(&dcmi->lock); in dcmi_release()
1480 mutex_unlock(&dcmi->lock); in dcmi_release()
1533 static int dcmi_set_default_fmt(struct stm32_dcmi *dcmi) in dcmi_set_default_fmt() argument
1541 .pixelformat = dcmi->sd_formats[0]->fourcc, in dcmi_set_default_fmt()
1546 ret = dcmi_try_fmt(dcmi, &f, NULL, NULL); in dcmi_set_default_fmt()
1549 dcmi->sd_format = dcmi->sd_formats[0]; in dcmi_set_default_fmt()
1550 dcmi->fmt = f; in dcmi_set_default_fmt()
1580 static int dcmi_formats_init(struct stm32_dcmi *dcmi) in dcmi_formats_init() argument
1584 struct v4l2_subdev *subdev = dcmi->entity.source; in dcmi_formats_init()
1597 if (sd_fmts[j]->fourcc == in dcmi_formats_init()
1600 dev_dbg(dcmi->dev, "Skipping fourcc/code: %4.4s/0x%x\n", in dcmi_formats_init()
1601 (char *)&sd_fmts[j]->fourcc, in dcmi_formats_init()
1608 dev_dbg(dcmi->dev, "Supported fourcc/code: %4.4s/0x%x\n", in dcmi_formats_init()
1609 (char *)&sd_fmts[num_fmts - 1]->fourcc, in dcmi_formats_init()
1610 sd_fmts[num_fmts - 1]->mbus_code); in dcmi_formats_init()
1617 return -ENXIO; in dcmi_formats_init()
1619 dcmi->num_of_sd_formats = num_fmts; in dcmi_formats_init()
1620 dcmi->sd_formats = devm_kcalloc(dcmi->dev, in dcmi_formats_init()
1623 if (!dcmi->sd_formats) { in dcmi_formats_init()
1624 dev_err(dcmi->dev, "Could not allocate memory\n"); in dcmi_formats_init()
1625 return -ENOMEM; in dcmi_formats_init()
1628 memcpy(dcmi->sd_formats, sd_fmts, in dcmi_formats_init()
1630 dcmi->sd_format = dcmi->sd_formats[0]; in dcmi_formats_init()
1635 static int dcmi_framesizes_init(struct stm32_dcmi *dcmi) in dcmi_framesizes_init() argument
1638 struct v4l2_subdev *subdev = dcmi->entity.source; in dcmi_framesizes_init()
1641 .code = dcmi->sd_format->mbus_code, in dcmi_framesizes_init()
1655 dcmi->num_of_sd_framesizes = num_fsize; in dcmi_framesizes_init()
1656 dcmi->sd_framesizes = devm_kcalloc(dcmi->dev, num_fsize, in dcmi_framesizes_init()
1659 if (!dcmi->sd_framesizes) { in dcmi_framesizes_init()
1660 dev_err(dcmi->dev, "Could not allocate memory\n"); in dcmi_framesizes_init()
1661 return -ENOMEM; in dcmi_framesizes_init()
1665 dev_dbg(dcmi->dev, "Sensor supports %u frame sizes:\n", num_fsize); in dcmi_framesizes_init()
1666 for (i = 0; i < dcmi->num_of_sd_framesizes; i++) { in dcmi_framesizes_init()
1672 dcmi->sd_framesizes[fse.index].width = fse.max_width; in dcmi_framesizes_init()
1673 dcmi->sd_framesizes[fse.index].height = fse.max_height; in dcmi_framesizes_init()
1674 dev_dbg(dcmi->dev, "%ux%u\n", fse.max_width, fse.max_height); in dcmi_framesizes_init()
1682 struct stm32_dcmi *dcmi = notifier_to_dcmi(notifier); in dcmi_graph_notify_complete() local
1690 dcmi->entity.source = in dcmi_graph_notify_complete()
1691 media_entity_to_v4l2_subdev(dcmi_find_source(dcmi)); in dcmi_graph_notify_complete()
1692 if (!dcmi->entity.source) { in dcmi_graph_notify_complete()
1693 dev_err(dcmi->dev, "Source subdevice not found\n"); in dcmi_graph_notify_complete()
1694 return -ENODEV; in dcmi_graph_notify_complete()
1697 dcmi->vdev->ctrl_handler = dcmi->entity.source->ctrl_handler; in dcmi_graph_notify_complete()
1699 ret = dcmi_formats_init(dcmi); in dcmi_graph_notify_complete()
1701 dev_err(dcmi->dev, "No supported mediabus format found\n"); in dcmi_graph_notify_complete()
1705 ret = dcmi_framesizes_init(dcmi); in dcmi_graph_notify_complete()
1707 dev_err(dcmi->dev, "Could not initialize framesizes\n"); in dcmi_graph_notify_complete()
1711 ret = dcmi_get_sensor_bounds(dcmi, &dcmi->sd_bounds); in dcmi_graph_notify_complete()
1713 dev_err(dcmi->dev, "Could not get sensor bounds\n"); in dcmi_graph_notify_complete()
1717 ret = dcmi_set_default_fmt(dcmi); in dcmi_graph_notify_complete()
1719 dev_err(dcmi->dev, "Could not set default format\n"); in dcmi_graph_notify_complete()
1730 struct stm32_dcmi *dcmi = notifier_to_dcmi(notifier); in dcmi_graph_notify_unbind() local
1732 dev_dbg(dcmi->dev, "Removing %s\n", video_device_node_name(dcmi->vdev)); in dcmi_graph_notify_unbind()
1735 video_unregister_device(dcmi->vdev); in dcmi_graph_notify_unbind()
1742 struct stm32_dcmi *dcmi = notifier_to_dcmi(notifier); in dcmi_graph_notify_bound() local
1746 dev_dbg(dcmi->dev, "Subdev \"%s\" bound\n", subdev->name); in dcmi_graph_notify_bound()
1749 * Link this sub-device to DCMI, it could be in dcmi_graph_notify_bound()
1752 src_pad = media_entity_get_fwnode_pad(&subdev->entity, in dcmi_graph_notify_bound()
1753 subdev->fwnode, in dcmi_graph_notify_bound()
1756 ret = media_create_pad_link(&subdev->entity, src_pad, in dcmi_graph_notify_bound()
1757 &dcmi->vdev->entity, 0, in dcmi_graph_notify_bound()
1761 dev_err(dcmi->dev, "Failed to create media pad link with subdev \"%s\"\n", in dcmi_graph_notify_bound()
1762 subdev->name); in dcmi_graph_notify_bound()
1764 dev_dbg(dcmi->dev, "DCMI is now linked to \"%s\"\n", in dcmi_graph_notify_bound()
1765 subdev->name); in dcmi_graph_notify_bound()
1776 static int dcmi_graph_parse(struct stm32_dcmi *dcmi, struct device_node *node) in dcmi_graph_parse() argument
1783 return -EINVAL; in dcmi_graph_parse()
1788 return -EINVAL; in dcmi_graph_parse()
1791 dcmi->entity.remote_node = remote; in dcmi_graph_parse()
1792 dcmi->entity.asd.match_type = V4L2_ASYNC_MATCH_FWNODE; in dcmi_graph_parse()
1793 dcmi->entity.asd.match.fwnode = of_fwnode_handle(remote); in dcmi_graph_parse()
1797 static int dcmi_graph_init(struct stm32_dcmi *dcmi) in dcmi_graph_init() argument
1802 ret = dcmi_graph_parse(dcmi, dcmi->dev->of_node); in dcmi_graph_init()
1804 dev_err(dcmi->dev, "Failed to parse graph\n"); in dcmi_graph_init()
1808 v4l2_async_notifier_init(&dcmi->notifier); in dcmi_graph_init()
1810 ret = v4l2_async_notifier_add_subdev(&dcmi->notifier, in dcmi_graph_init()
1811 &dcmi->entity.asd); in dcmi_graph_init()
1813 dev_err(dcmi->dev, "Failed to add subdev notifier\n"); in dcmi_graph_init()
1814 of_node_put(dcmi->entity.remote_node); in dcmi_graph_init()
1818 dcmi->notifier.ops = &dcmi_graph_notify_ops; in dcmi_graph_init()
1820 ret = v4l2_async_notifier_register(&dcmi->v4l2_dev, &dcmi->notifier); in dcmi_graph_init()
1822 dev_err(dcmi->dev, "Failed to register notifier\n"); in dcmi_graph_init()
1823 v4l2_async_notifier_cleanup(&dcmi->notifier); in dcmi_graph_init()
1832 struct device_node *np = pdev->dev.of_node; in dcmi_probe()
1835 struct stm32_dcmi *dcmi; in dcmi_probe() local
1842 match = of_match_device(of_match_ptr(stm32_dcmi_of_match), &pdev->dev); in dcmi_probe()
1844 dev_err(&pdev->dev, "Could not find a match in devicetree\n"); in dcmi_probe()
1845 return -ENODEV; in dcmi_probe()
1848 dcmi = devm_kzalloc(&pdev->dev, sizeof(struct stm32_dcmi), GFP_KERNEL); in dcmi_probe()
1849 if (!dcmi) in dcmi_probe()
1850 return -ENOMEM; in dcmi_probe()
1852 dcmi->rstc = devm_reset_control_get_exclusive(&pdev->dev, NULL); in dcmi_probe()
1853 if (IS_ERR(dcmi->rstc)) { in dcmi_probe()
1854 dev_err(&pdev->dev, "Could not get reset control\n"); in dcmi_probe()
1855 return PTR_ERR(dcmi->rstc); in dcmi_probe()
1861 dev_err(&pdev->dev, "Could not find the endpoint\n"); in dcmi_probe()
1862 return -ENODEV; in dcmi_probe()
1868 dev_err(&pdev->dev, "Could not parse the endpoint\n"); in dcmi_probe()
1873 dev_err(&pdev->dev, "CSI bus not supported\n"); in dcmi_probe()
1874 return -ENODEV; in dcmi_probe()
1876 dcmi->bus.flags = ep.bus.parallel.flags; in dcmi_probe()
1877 dcmi->bus.bus_width = ep.bus.parallel.bus_width; in dcmi_probe()
1878 dcmi->bus.data_shift = ep.bus.parallel.data_shift; in dcmi_probe()
1882 return irq ? irq : -ENXIO; in dcmi_probe()
1884 dcmi->res = platform_get_resource(pdev, IORESOURCE_MEM, 0); in dcmi_probe()
1885 if (!dcmi->res) { in dcmi_probe()
1886 dev_err(&pdev->dev, "Could not get resource\n"); in dcmi_probe()
1887 return -ENODEV; in dcmi_probe()
1890 dcmi->regs = devm_ioremap_resource(&pdev->dev, dcmi->res); in dcmi_probe()
1891 if (IS_ERR(dcmi->regs)) { in dcmi_probe()
1892 dev_err(&pdev->dev, "Could not map registers\n"); in dcmi_probe()
1893 return PTR_ERR(dcmi->regs); in dcmi_probe()
1896 ret = devm_request_threaded_irq(&pdev->dev, irq, dcmi_irq_callback, in dcmi_probe()
1898 dev_name(&pdev->dev), dcmi); in dcmi_probe()
1900 dev_err(&pdev->dev, "Unable to request irq %d\n", irq); in dcmi_probe()
1904 mclk = devm_clk_get(&pdev->dev, "mclk"); in dcmi_probe()
1906 if (PTR_ERR(mclk) != -EPROBE_DEFER) in dcmi_probe()
1907 dev_err(&pdev->dev, "Unable to get mclk\n"); in dcmi_probe()
1911 chan = dma_request_chan(&pdev->dev, "tx"); in dcmi_probe()
1914 if (ret != -EPROBE_DEFER) in dcmi_probe()
1915 dev_err(&pdev->dev, in dcmi_probe()
1920 spin_lock_init(&dcmi->irqlock); in dcmi_probe()
1921 mutex_init(&dcmi->lock); in dcmi_probe()
1922 mutex_init(&dcmi->dma_lock); in dcmi_probe()
1923 init_completion(&dcmi->complete); in dcmi_probe()
1924 INIT_LIST_HEAD(&dcmi->buffers); in dcmi_probe()
1926 dcmi->dev = &pdev->dev; in dcmi_probe()
1927 dcmi->mclk = mclk; in dcmi_probe()
1928 dcmi->state = STOPPED; in dcmi_probe()
1929 dcmi->dma_chan = chan; in dcmi_probe()
1931 q = &dcmi->queue; in dcmi_probe()
1933 dcmi->v4l2_dev.mdev = &dcmi->mdev; in dcmi_probe()
1936 strscpy(dcmi->mdev.model, DRV_NAME, sizeof(dcmi->mdev.model)); in dcmi_probe()
1937 snprintf(dcmi->mdev.bus_info, sizeof(dcmi->mdev.bus_info), in dcmi_probe()
1939 dcmi->mdev.dev = &pdev->dev; in dcmi_probe()
1940 media_device_init(&dcmi->mdev); in dcmi_probe()
1942 /* Initialize the top-level structure */ in dcmi_probe()
1943 ret = v4l2_device_register(&pdev->dev, &dcmi->v4l2_dev); in dcmi_probe()
1947 dcmi->vdev = video_device_alloc(); in dcmi_probe()
1948 if (!dcmi->vdev) { in dcmi_probe()
1949 ret = -ENOMEM; in dcmi_probe()
1954 dcmi->vdev->fops = &dcmi_fops; in dcmi_probe()
1955 dcmi->vdev->v4l2_dev = &dcmi->v4l2_dev; in dcmi_probe()
1956 dcmi->vdev->queue = &dcmi->queue; in dcmi_probe()
1957 strscpy(dcmi->vdev->name, KBUILD_MODNAME, sizeof(dcmi->vdev->name)); in dcmi_probe()
1958 dcmi->vdev->release = video_device_release; in dcmi_probe()
1959 dcmi->vdev->ioctl_ops = &dcmi_ioctl_ops; in dcmi_probe()
1960 dcmi->vdev->lock = &dcmi->lock; in dcmi_probe()
1961 dcmi->vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING | in dcmi_probe()
1963 video_set_drvdata(dcmi->vdev, dcmi); in dcmi_probe()
1966 dcmi->vid_cap_pad.flags = MEDIA_PAD_FL_SINK; in dcmi_probe()
1967 ret = media_entity_pads_init(&dcmi->vdev->entity, in dcmi_probe()
1968 1, &dcmi->vid_cap_pad); in dcmi_probe()
1970 dev_err(dcmi->dev, "Failed to init media entity pad\n"); in dcmi_probe()
1973 dcmi->vdev->entity.flags |= MEDIA_ENT_FL_DEFAULT; in dcmi_probe()
1975 ret = video_register_device(dcmi->vdev, VFL_TYPE_VIDEO, -1); in dcmi_probe()
1977 dev_err(dcmi->dev, "Failed to register video device\n"); in dcmi_probe()
1981 dev_dbg(dcmi->dev, "Device registered as %s\n", in dcmi_probe()
1982 video_device_node_name(dcmi->vdev)); in dcmi_probe()
1985 q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; in dcmi_probe()
1986 q->io_modes = VB2_MMAP | VB2_READ | VB2_DMABUF; in dcmi_probe()
1987 q->lock = &dcmi->lock; in dcmi_probe()
1988 q->drv_priv = dcmi; in dcmi_probe()
1989 q->buf_struct_size = sizeof(struct dcmi_buf); in dcmi_probe()
1990 q->ops = &dcmi_video_qops; in dcmi_probe()
1991 q->mem_ops = &vb2_dma_contig_memops; in dcmi_probe()
1992 q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; in dcmi_probe()
1993 q->min_buffers_needed = 2; in dcmi_probe()
1994 q->dev = &pdev->dev; in dcmi_probe()
1998 dev_err(&pdev->dev, "Failed to initialize vb2 queue\n"); in dcmi_probe()
2002 ret = dcmi_graph_init(dcmi); in dcmi_probe()
2007 ret = reset_control_assert(dcmi->rstc); in dcmi_probe()
2009 dev_err(&pdev->dev, "Failed to assert the reset line\n"); in dcmi_probe()
2015 ret = reset_control_deassert(dcmi->rstc); in dcmi_probe()
2017 dev_err(&pdev->dev, "Failed to deassert the reset line\n"); in dcmi_probe()
2021 dev_info(&pdev->dev, "Probe done\n"); in dcmi_probe()
2023 platform_set_drvdata(pdev, dcmi); in dcmi_probe()
2025 pm_runtime_enable(&pdev->dev); in dcmi_probe()
2030 v4l2_async_notifier_cleanup(&dcmi->notifier); in dcmi_probe()
2032 media_entity_cleanup(&dcmi->vdev->entity); in dcmi_probe()
2034 video_device_release(dcmi->vdev); in dcmi_probe()
2036 v4l2_device_unregister(&dcmi->v4l2_dev); in dcmi_probe()
2038 media_device_cleanup(&dcmi->mdev); in dcmi_probe()
2039 dma_release_channel(dcmi->dma_chan); in dcmi_probe()
2046 struct stm32_dcmi *dcmi = platform_get_drvdata(pdev); in dcmi_remove() local
2048 pm_runtime_disable(&pdev->dev); in dcmi_remove()
2050 v4l2_async_notifier_unregister(&dcmi->notifier); in dcmi_remove()
2051 v4l2_async_notifier_cleanup(&dcmi->notifier); in dcmi_remove()
2052 media_entity_cleanup(&dcmi->vdev->entity); in dcmi_remove()
2053 v4l2_device_unregister(&dcmi->v4l2_dev); in dcmi_remove()
2054 media_device_cleanup(&dcmi->mdev); in dcmi_remove()
2056 dma_release_channel(dcmi->dma_chan); in dcmi_remove()
2063 struct stm32_dcmi *dcmi = dev_get_drvdata(dev); in dcmi_runtime_suspend() local
2065 clk_disable_unprepare(dcmi->mclk); in dcmi_runtime_suspend()
2072 struct stm32_dcmi *dcmi = dev_get_drvdata(dev); in dcmi_runtime_resume() local
2075 ret = clk_prepare_enable(dcmi->mclk); in dcmi_runtime_resume()
2124 MODULE_DESCRIPTION("STMicroelectronics STM32 Digital Camera Memory Interface driver");