| /* |
| * Samsung S5P/EXYNOS4 SoC series camera interface (camera capture) driver |
| * |
| * Copyright (C) 2010 - 2011 Samsung Electronics Co., Ltd. |
| * Author: Sylwester Nawrocki, <s.nawrocki@samsung.com> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/kernel.h> |
| #include <linux/types.h> |
| #include <linux/errno.h> |
| #include <linux/bug.h> |
| #include <linux/interrupt.h> |
| #include <linux/device.h> |
| #include <linux/pm_runtime.h> |
| #include <linux/list.h> |
| #include <linux/slab.h> |
| |
| #include <linux/videodev2.h> |
| #include <media/v4l2-device.h> |
| #include <media/v4l2-ioctl.h> |
| #include <media/v4l2-mem2mem.h> |
| #include <media/videobuf2-core.h> |
| #include <media/videobuf2-dma-contig.h> |
| |
| #include "fimc-mdevice.h" |
| #include "fimc-core.h" |
| #include "fimc-reg.h" |
| |
| static int fimc_init_capture(struct fimc_dev *fimc) |
| { |
| struct fimc_ctx *ctx = fimc->vid_cap.ctx; |
| struct fimc_pipeline *p = &fimc->pipeline; |
| struct fimc_sensor_info *sensor; |
| unsigned long flags; |
| int ret = 0; |
| |
| if (p->subdevs[IDX_SENSOR] == NULL || ctx == NULL) |
| return -ENXIO; |
| if (ctx->s_frame.fmt == NULL) |
| return -EINVAL; |
| |
| sensor = v4l2_get_subdev_hostdata(p->subdevs[IDX_SENSOR]); |
| |
| spin_lock_irqsave(&fimc->slock, flags); |
| fimc_prepare_dma_offset(ctx, &ctx->d_frame); |
| fimc_set_yuv_order(ctx); |
| |
| fimc_hw_set_camera_polarity(fimc, sensor->pdata); |
| fimc_hw_set_camera_type(fimc, sensor->pdata); |
| fimc_hw_set_camera_source(fimc, sensor->pdata); |
| fimc_hw_set_camera_offset(fimc, &ctx->s_frame); |
| |
| ret = fimc_set_scaler_info(ctx); |
| if (!ret) { |
| fimc_hw_set_input_path(ctx); |
| fimc_hw_set_prescaler(ctx); |
| fimc_hw_set_mainscaler(ctx); |
| fimc_hw_set_target_format(ctx); |
| fimc_hw_set_rotation(ctx); |
| fimc_hw_set_effect(ctx, false); |
| fimc_hw_set_output_path(ctx); |
| fimc_hw_set_out_dma(ctx); |
| if (fimc->variant->has_alpha) |
| fimc_hw_set_rgb_alpha(ctx); |
| clear_bit(ST_CAPT_APPLY_CFG, &fimc->state); |
| } |
| spin_unlock_irqrestore(&fimc->slock, flags); |
| return ret; |
| } |
| |
| static int fimc_capture_state_cleanup(struct fimc_dev *fimc, bool suspend) |
| { |
| struct fimc_vid_cap *cap = &fimc->vid_cap; |
| struct fimc_vid_buffer *buf; |
| unsigned long flags; |
| bool streaming; |
| |
| spin_lock_irqsave(&fimc->slock, flags); |
| streaming = fimc->state & (1 << ST_CAPT_ISP_STREAM); |
| |
| fimc->state &= ~(1 << ST_CAPT_RUN | 1 << ST_CAPT_SHUT | |
| 1 << ST_CAPT_STREAM | 1 << ST_CAPT_ISP_STREAM); |
| if (suspend) |
| fimc->state |= (1 << ST_CAPT_SUSPENDED); |
| else |
| fimc->state &= ~(1 << ST_CAPT_PEND | 1 << ST_CAPT_SUSPENDED); |
| |
| /* Release unused buffers */ |
| while (!suspend && !list_empty(&cap->pending_buf_q)) { |
| buf = fimc_pending_queue_pop(cap); |
| vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR); |
| } |
| /* If suspending put unused buffers onto pending queue */ |
| while (!list_empty(&cap->active_buf_q)) { |
| buf = fimc_active_queue_pop(cap); |
| if (suspend) |
| fimc_pending_queue_add(cap, buf); |
| else |
| vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR); |
| } |
| |
| fimc_hw_reset(fimc); |
| cap->buf_index = 0; |
| |
| spin_unlock_irqrestore(&fimc->slock, flags); |
| |
| if (streaming) |
| return fimc_pipeline_s_stream(&fimc->pipeline, 0); |
| else |
| return 0; |
| } |
| |
| static int fimc_stop_capture(struct fimc_dev *fimc, bool suspend) |
| { |
| unsigned long flags; |
| |
| if (!fimc_capture_active(fimc)) |
| return 0; |
| |
| spin_lock_irqsave(&fimc->slock, flags); |
| set_bit(ST_CAPT_SHUT, &fimc->state); |
| fimc_deactivate_capture(fimc); |
| spin_unlock_irqrestore(&fimc->slock, flags); |
| |
| wait_event_timeout(fimc->irq_queue, |
| !test_bit(ST_CAPT_SHUT, &fimc->state), |
| (2*HZ/10)); /* 200 ms */ |
| |
| return fimc_capture_state_cleanup(fimc, suspend); |
| } |
| |
| /** |
| * fimc_capture_config_update - apply the camera interface configuration |
| * |
| * To be called from within the interrupt handler with fimc.slock |
| * spinlock held. It updates the camera pixel crop, rotation and |
| * image flip in H/W. |
| */ |
| static int fimc_capture_config_update(struct fimc_ctx *ctx) |
| { |
| struct fimc_dev *fimc = ctx->fimc_dev; |
| int ret; |
| |
| if (!test_bit(ST_CAPT_APPLY_CFG, &fimc->state)) |
| return 0; |
| |
| fimc_hw_set_camera_offset(fimc, &ctx->s_frame); |
| |
| ret = fimc_set_scaler_info(ctx); |
| if (ret) |
| return ret; |
| |
| fimc_hw_set_prescaler(ctx); |
| fimc_hw_set_mainscaler(ctx); |
| fimc_hw_set_target_format(ctx); |
| fimc_hw_set_rotation(ctx); |
| fimc_prepare_dma_offset(ctx, &ctx->d_frame); |
| fimc_hw_set_out_dma(ctx); |
| if (fimc->variant->has_alpha) |
| fimc_hw_set_rgb_alpha(ctx); |
| |
| clear_bit(ST_CAPT_APPLY_CFG, &fimc->state); |
| return ret; |
| } |
| |
| void fimc_capture_irq_handler(struct fimc_dev *fimc, int deq_buf) |
| { |
| struct fimc_vid_cap *cap = &fimc->vid_cap; |
| struct fimc_vid_buffer *v_buf; |
| struct timeval *tv; |
| struct timespec ts; |
| |
| if (test_and_clear_bit(ST_CAPT_SHUT, &fimc->state)) { |
| wake_up(&fimc->irq_queue); |
| goto done; |
| } |
| |
| if (!list_empty(&cap->active_buf_q) && |
| test_bit(ST_CAPT_RUN, &fimc->state) && deq_buf) { |
| ktime_get_real_ts(&ts); |
| |
| v_buf = fimc_active_queue_pop(cap); |
| |
| tv = &v_buf->vb.v4l2_buf.timestamp; |
| tv->tv_sec = ts.tv_sec; |
| tv->tv_usec = ts.tv_nsec / NSEC_PER_USEC; |
| v_buf->vb.v4l2_buf.sequence = cap->frame_count++; |
| |
| vb2_buffer_done(&v_buf->vb, VB2_BUF_STATE_DONE); |
| } |
| |
| if (!list_empty(&cap->pending_buf_q)) { |
| |
| v_buf = fimc_pending_queue_pop(cap); |
| fimc_hw_set_output_addr(fimc, &v_buf->paddr, cap->buf_index); |
| v_buf->index = cap->buf_index; |
| |
| /* Move the buffer to the capture active queue */ |
| fimc_active_queue_add(cap, v_buf); |
| |
| dbg("next frame: %d, done frame: %d", |
| fimc_hw_get_frame_index(fimc), v_buf->index); |
| |
| if (++cap->buf_index >= FIMC_MAX_OUT_BUFS) |
| cap->buf_index = 0; |
| } |
| |
| if (cap->active_buf_cnt == 0) { |
| if (deq_buf) |
| clear_bit(ST_CAPT_RUN, &fimc->state); |
| |
| if (++cap->buf_index >= FIMC_MAX_OUT_BUFS) |
| cap->buf_index = 0; |
| } else { |
| set_bit(ST_CAPT_RUN, &fimc->state); |
| } |
| |
| fimc_capture_config_update(cap->ctx); |
| done: |
| if (cap->active_buf_cnt == 1) { |
| fimc_deactivate_capture(fimc); |
| clear_bit(ST_CAPT_STREAM, &fimc->state); |
| } |
| |
| dbg("frame: %d, active_buf_cnt: %d", |
| fimc_hw_get_frame_index(fimc), cap->active_buf_cnt); |
| } |
| |
| |
| static int start_streaming(struct vb2_queue *q, unsigned int count) |
| { |
| struct fimc_ctx *ctx = q->drv_priv; |
| struct fimc_dev *fimc = ctx->fimc_dev; |
| struct fimc_vid_cap *vid_cap = &fimc->vid_cap; |
| int min_bufs; |
| int ret; |
| |
| vid_cap->frame_count = 0; |
| |
| ret = fimc_init_capture(fimc); |
| if (ret) |
| goto error; |
| |
| set_bit(ST_CAPT_PEND, &fimc->state); |
| |
| min_bufs = fimc->vid_cap.reqbufs_count > 1 ? 2 : 1; |
| |
| if (vid_cap->active_buf_cnt >= min_bufs && |
| !test_and_set_bit(ST_CAPT_STREAM, &fimc->state)) { |
| fimc_activate_capture(ctx); |
| |
| if (!test_and_set_bit(ST_CAPT_ISP_STREAM, &fimc->state)) |
| fimc_pipeline_s_stream(&fimc->pipeline, 1); |
| } |
| |
| return 0; |
| error: |
| fimc_capture_state_cleanup(fimc, false); |
| return ret; |
| } |
| |
| static int stop_streaming(struct vb2_queue *q) |
| { |
| struct fimc_ctx *ctx = q->drv_priv; |
| struct fimc_dev *fimc = ctx->fimc_dev; |
| |
| if (!fimc_capture_active(fimc)) |
| return -EINVAL; |
| |
| return fimc_stop_capture(fimc, false); |
| } |
| |
| int fimc_capture_suspend(struct fimc_dev *fimc) |
| { |
| bool suspend = fimc_capture_busy(fimc); |
| |
| int ret = fimc_stop_capture(fimc, suspend); |
| if (ret) |
| return ret; |
| return fimc_pipeline_shutdown(&fimc->pipeline); |
| } |
| |
| static void buffer_queue(struct vb2_buffer *vb); |
| |
| int fimc_capture_resume(struct fimc_dev *fimc) |
| { |
| struct fimc_vid_cap *vid_cap = &fimc->vid_cap; |
| struct fimc_vid_buffer *buf; |
| int i; |
| |
| if (!test_and_clear_bit(ST_CAPT_SUSPENDED, &fimc->state)) |
| return 0; |
| |
| INIT_LIST_HEAD(&fimc->vid_cap.active_buf_q); |
| vid_cap->buf_index = 0; |
| fimc_pipeline_initialize(&fimc->pipeline, &vid_cap->vfd->entity, |
| false); |
| fimc_init_capture(fimc); |
| |
| clear_bit(ST_CAPT_SUSPENDED, &fimc->state); |
| |
| for (i = 0; i < vid_cap->reqbufs_count; i++) { |
| if (list_empty(&vid_cap->pending_buf_q)) |
| break; |
| buf = fimc_pending_queue_pop(vid_cap); |
| buffer_queue(&buf->vb); |
| } |
| return 0; |
| |
| } |
| |
| static int queue_setup(struct vb2_queue *vq, const struct v4l2_format *pfmt, |
| unsigned int *num_buffers, unsigned int *num_planes, |
| unsigned int sizes[], void *allocators[]) |
| { |
| const struct v4l2_pix_format_mplane *pixm = NULL; |
| struct fimc_ctx *ctx = vq->drv_priv; |
| struct fimc_frame *frame = &ctx->d_frame; |
| struct fimc_fmt *fmt = frame->fmt; |
| unsigned long wh; |
| int i; |
| |
| if (pfmt) { |
| pixm = &pfmt->fmt.pix_mp; |
| fmt = fimc_find_format(&pixm->pixelformat, NULL, |
| FMT_FLAGS_CAM | FMT_FLAGS_M2M, -1); |
| wh = pixm->width * pixm->height; |
| } else { |
| wh = frame->f_width * frame->f_height; |
| } |
| |
| if (fmt == NULL) |
| return -EINVAL; |
| |
| *num_planes = fmt->memplanes; |
| |
| for (i = 0; i < fmt->memplanes; i++) { |
| unsigned int size = (wh * fmt->depth[i]) / 8; |
| if (pixm) |
| sizes[i] = max(size, pixm->plane_fmt[i].sizeimage); |
| else |
| sizes[i] = size; |
| allocators[i] = ctx->fimc_dev->alloc_ctx; |
| } |
| |
| return 0; |
| } |
| |
| static int buffer_prepare(struct vb2_buffer *vb) |
| { |
| struct vb2_queue *vq = vb->vb2_queue; |
| struct fimc_ctx *ctx = vq->drv_priv; |
| int i; |
| |
| if (ctx->d_frame.fmt == NULL) |
| return -EINVAL; |
| |
| for (i = 0; i < ctx->d_frame.fmt->memplanes; i++) { |
| unsigned long size = ctx->d_frame.payload[i]; |
| |
| if (vb2_plane_size(vb, i) < size) { |
| v4l2_err(ctx->fimc_dev->vid_cap.vfd, |
| "User buffer too small (%ld < %ld)\n", |
| vb2_plane_size(vb, i), size); |
| return -EINVAL; |
| } |
| vb2_set_plane_payload(vb, i, size); |
| } |
| |
| return 0; |
| } |
| |
| static void buffer_queue(struct vb2_buffer *vb) |
| { |
| struct fimc_vid_buffer *buf |
| = container_of(vb, struct fimc_vid_buffer, vb); |
| struct fimc_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); |
| struct fimc_dev *fimc = ctx->fimc_dev; |
| struct fimc_vid_cap *vid_cap = &fimc->vid_cap; |
| unsigned long flags; |
| int min_bufs; |
| |
| spin_lock_irqsave(&fimc->slock, flags); |
| fimc_prepare_addr(ctx, &buf->vb, &ctx->d_frame, &buf->paddr); |
| |
| if (!test_bit(ST_CAPT_SUSPENDED, &fimc->state) && |
| !test_bit(ST_CAPT_STREAM, &fimc->state) && |
| vid_cap->active_buf_cnt < FIMC_MAX_OUT_BUFS) { |
| /* Setup the buffer directly for processing. */ |
| int buf_id = (vid_cap->reqbufs_count == 1) ? -1 : |
| vid_cap->buf_index; |
| |
| fimc_hw_set_output_addr(fimc, &buf->paddr, buf_id); |
| buf->index = vid_cap->buf_index; |
| fimc_active_queue_add(vid_cap, buf); |
| |
| if (++vid_cap->buf_index >= FIMC_MAX_OUT_BUFS) |
| vid_cap->buf_index = 0; |
| } else { |
| fimc_pending_queue_add(vid_cap, buf); |
| } |
| |
| min_bufs = vid_cap->reqbufs_count > 1 ? 2 : 1; |
| |
| |
| if (vb2_is_streaming(&vid_cap->vbq) && |
| vid_cap->active_buf_cnt >= min_bufs && |
| !test_and_set_bit(ST_CAPT_STREAM, &fimc->state)) { |
| fimc_activate_capture(ctx); |
| spin_unlock_irqrestore(&fimc->slock, flags); |
| |
| if (!test_and_set_bit(ST_CAPT_ISP_STREAM, &fimc->state)) |
| fimc_pipeline_s_stream(&fimc->pipeline, 1); |
| return; |
| } |
| spin_unlock_irqrestore(&fimc->slock, flags); |
| } |
| |
| static void fimc_lock(struct vb2_queue *vq) |
| { |
| struct fimc_ctx *ctx = vb2_get_drv_priv(vq); |
| mutex_lock(&ctx->fimc_dev->lock); |
| } |
| |
| static void fimc_unlock(struct vb2_queue *vq) |
| { |
| struct fimc_ctx *ctx = vb2_get_drv_priv(vq); |
| mutex_unlock(&ctx->fimc_dev->lock); |
| } |
| |
| static struct vb2_ops fimc_capture_qops = { |
| .queue_setup = queue_setup, |
| .buf_prepare = buffer_prepare, |
| .buf_queue = buffer_queue, |
| .wait_prepare = fimc_unlock, |
| .wait_finish = fimc_lock, |
| .start_streaming = start_streaming, |
| .stop_streaming = stop_streaming, |
| }; |
| |
| /** |
| * fimc_capture_ctrls_create - initialize the control handler |
| * Initialize the capture video node control handler and fill it |
| * with the FIMC controls. Inherit any sensor's controls if the |
| * 'user_subdev_api' flag is false (default behaviour). |
| * This function need to be called with the graph mutex held. |
| */ |
| int fimc_capture_ctrls_create(struct fimc_dev *fimc) |
| { |
| struct fimc_vid_cap *vid_cap = &fimc->vid_cap; |
| int ret; |
| |
| if (WARN_ON(vid_cap->ctx == NULL)) |
| return -ENXIO; |
| if (vid_cap->ctx->ctrls_rdy) |
| return 0; |
| |
| ret = fimc_ctrls_create(vid_cap->ctx); |
| if (ret || vid_cap->user_subdev_api) |
| return ret; |
| |
| return v4l2_ctrl_add_handler(&vid_cap->ctx->ctrl_handler, |
| fimc->pipeline.subdevs[IDX_SENSOR]->ctrl_handler); |
| } |
| |
| static int fimc_capture_set_default_format(struct fimc_dev *fimc); |
| |
| static int fimc_capture_open(struct file *file) |
| { |
| struct fimc_dev *fimc = video_drvdata(file); |
| int ret = v4l2_fh_open(file); |
| |
| if (ret) |
| return ret; |
| |
| dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state); |
| |
| /* Return if the corresponding video mem2mem node is already opened. */ |
| if (fimc_m2m_active(fimc)) |
| return -EBUSY; |
| |
| set_bit(ST_CAPT_BUSY, &fimc->state); |
| pm_runtime_get_sync(&fimc->pdev->dev); |
| |
| if (++fimc->vid_cap.refcnt == 1) { |
| ret = fimc_pipeline_initialize(&fimc->pipeline, |
| &fimc->vid_cap.vfd->entity, true); |
| if (ret < 0) { |
| dev_err(&fimc->pdev->dev, |
| "Video pipeline initialization failed\n"); |
| pm_runtime_put_sync(&fimc->pdev->dev); |
| fimc->vid_cap.refcnt--; |
| v4l2_fh_release(file); |
| clear_bit(ST_CAPT_BUSY, &fimc->state); |
| return ret; |
| } |
| ret = fimc_capture_ctrls_create(fimc); |
| |
| if (!ret && !fimc->vid_cap.user_subdev_api) |
| ret = fimc_capture_set_default_format(fimc); |
| } |
| return ret; |
| } |
| |
| static int fimc_capture_close(struct file *file) |
| { |
| struct fimc_dev *fimc = video_drvdata(file); |
| |
| dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state); |
| |
| if (--fimc->vid_cap.refcnt == 0) { |
| clear_bit(ST_CAPT_BUSY, &fimc->state); |
| fimc_stop_capture(fimc, false); |
| fimc_pipeline_shutdown(&fimc->pipeline); |
| clear_bit(ST_CAPT_SUSPENDED, &fimc->state); |
| } |
| |
| pm_runtime_put(&fimc->pdev->dev); |
| |
| if (fimc->vid_cap.refcnt == 0) { |
| vb2_queue_release(&fimc->vid_cap.vbq); |
| fimc_ctrls_delete(fimc->vid_cap.ctx); |
| } |
| return v4l2_fh_release(file); |
| } |
| |
| static unsigned int fimc_capture_poll(struct file *file, |
| struct poll_table_struct *wait) |
| { |
| struct fimc_dev *fimc = video_drvdata(file); |
| |
| return vb2_poll(&fimc->vid_cap.vbq, file, wait); |
| } |
| |
| static int fimc_capture_mmap(struct file *file, struct vm_area_struct *vma) |
| { |
| struct fimc_dev *fimc = video_drvdata(file); |
| |
| return vb2_mmap(&fimc->vid_cap.vbq, vma); |
| } |
| |
| static const struct v4l2_file_operations fimc_capture_fops = { |
| .owner = THIS_MODULE, |
| .open = fimc_capture_open, |
| .release = fimc_capture_close, |
| .poll = fimc_capture_poll, |
| .unlocked_ioctl = video_ioctl2, |
| .mmap = fimc_capture_mmap, |
| }; |
| |
| /* |
| * Format and crop negotiation helpers |
| */ |
| |
| static struct fimc_fmt *fimc_capture_try_format(struct fimc_ctx *ctx, |
| u32 *width, u32 *height, |
| u32 *code, u32 *fourcc, int pad) |
| { |
| bool rotation = ctx->rotation == 90 || ctx->rotation == 270; |
| struct fimc_dev *fimc = ctx->fimc_dev; |
| struct samsung_fimc_variant *var = fimc->variant; |
| struct fimc_pix_limit *pl = var->pix_limit; |
| struct fimc_frame *dst = &ctx->d_frame; |
| u32 depth, min_w, max_w, min_h, align_h = 3; |
| u32 mask = FMT_FLAGS_CAM; |
| struct fimc_fmt *ffmt; |
| |
| /* Color conversion from/to JPEG is not supported */ |
| if (code && ctx->s_frame.fmt && pad == FIMC_SD_PAD_SOURCE && |
| fimc_fmt_is_jpeg(ctx->s_frame.fmt->color)) |
| *code = V4L2_MBUS_FMT_JPEG_1X8; |
| |
| if (fourcc && *fourcc != V4L2_PIX_FMT_JPEG && pad != FIMC_SD_PAD_SINK) |
| mask |= FMT_FLAGS_M2M; |
| |
| ffmt = fimc_find_format(fourcc, code, mask, 0); |
| if (WARN_ON(!ffmt)) |
| return NULL; |
| if (code) |
| *code = ffmt->mbus_code; |
| if (fourcc) |
| *fourcc = ffmt->fourcc; |
| |
| if (pad == FIMC_SD_PAD_SINK) { |
| max_w = fimc_fmt_is_jpeg(ffmt->color) ? |
| pl->scaler_dis_w : pl->scaler_en_w; |
| /* Apply the camera input interface pixel constraints */ |
| v4l_bound_align_image(width, max_t(u32, *width, 32), max_w, 4, |
| height, max_t(u32, *height, 32), |
| FIMC_CAMIF_MAX_HEIGHT, |
| fimc_fmt_is_jpeg(ffmt->color) ? 3 : 1, |
| 0); |
| return ffmt; |
| } |
| /* Can't scale or crop in transparent (JPEG) transfer mode */ |
| if (fimc_fmt_is_jpeg(ffmt->color)) { |
| *width = ctx->s_frame.f_width; |
| *height = ctx->s_frame.f_height; |
| return ffmt; |
| } |
| /* Apply the scaler and the output DMA constraints */ |
| max_w = rotation ? pl->out_rot_en_w : pl->out_rot_dis_w; |
| min_w = ctx->state & FIMC_DST_CROP ? dst->width : var->min_out_pixsize; |
| min_h = ctx->state & FIMC_DST_CROP ? dst->height : var->min_out_pixsize; |
| if (var->min_vsize_align == 1 && !rotation) |
| align_h = fimc_fmt_is_rgb(ffmt->color) ? 0 : 1; |
| |
| depth = fimc_get_format_depth(ffmt); |
| v4l_bound_align_image(width, min_w, max_w, |
| ffs(var->min_out_pixsize) - 1, |
| height, min_h, FIMC_CAMIF_MAX_HEIGHT, |
| align_h, |
| 64/(ALIGN(depth, 8))); |
| |
| dbg("pad%d: code: 0x%x, %dx%d. dst fmt: %dx%d", |
| pad, code ? *code : 0, *width, *height, |
| dst->f_width, dst->f_height); |
| |
| return ffmt; |
| } |
| |
| static void fimc_capture_try_crop(struct fimc_ctx *ctx, struct v4l2_rect *r, |
| int pad) |
| { |
| bool rotate = ctx->rotation == 90 || ctx->rotation == 270; |
| struct fimc_dev *fimc = ctx->fimc_dev; |
| struct samsung_fimc_variant *var = fimc->variant; |
| struct fimc_pix_limit *pl = var->pix_limit; |
| struct fimc_frame *sink = &ctx->s_frame; |
| u32 max_w, max_h, min_w = 0, min_h = 0, min_sz; |
| u32 align_sz = 0, align_h = 4; |
| u32 max_sc_h, max_sc_v; |
| |
| /* In JPEG transparent transfer mode cropping is not supported */ |
| if (fimc_fmt_is_jpeg(ctx->d_frame.fmt->color)) { |
| r->width = sink->f_width; |
| r->height = sink->f_height; |
| r->left = r->top = 0; |
| return; |
| } |
| if (pad == FIMC_SD_PAD_SOURCE) { |
| if (ctx->rotation != 90 && ctx->rotation != 270) |
| align_h = 1; |
| max_sc_h = min(SCALER_MAX_HRATIO, 1 << (ffs(sink->width) - 3)); |
| max_sc_v = min(SCALER_MAX_VRATIO, 1 << (ffs(sink->height) - 1)); |
| min_sz = var->min_out_pixsize; |
| } else { |
| u32 depth = fimc_get_format_depth(sink->fmt); |
| align_sz = 64/ALIGN(depth, 8); |
| min_sz = var->min_inp_pixsize; |
| min_w = min_h = min_sz; |
| max_sc_h = max_sc_v = 1; |
| } |
| /* |
| * For the crop rectangle at source pad the following constraints |
| * must be met: |
| * - it must fit in the sink pad format rectangle (f_width/f_height); |
| * - maximum downscaling ratio is 64; |
| * - maximum crop size depends if the rotator is used or not; |
| * - the sink pad format width/height must be 4 multiple of the |
| * prescaler ratios determined by sink pad size and source pad crop, |
| * the prescaler ratio is returned by fimc_get_scaler_factor(). |
| */ |
| max_w = min_t(u32, |
| rotate ? pl->out_rot_en_w : pl->out_rot_dis_w, |
| rotate ? sink->f_height : sink->f_width); |
| max_h = min_t(u32, FIMC_CAMIF_MAX_HEIGHT, sink->f_height); |
| if (pad == FIMC_SD_PAD_SOURCE) { |
| min_w = min_t(u32, max_w, sink->f_width / max_sc_h); |
| min_h = min_t(u32, max_h, sink->f_height / max_sc_v); |
| if (rotate) { |
| swap(max_sc_h, max_sc_v); |
| swap(min_w, min_h); |
| } |
| } |
| v4l_bound_align_image(&r->width, min_w, max_w, ffs(min_sz) - 1, |
| &r->height, min_h, max_h, align_h, |
| align_sz); |
| /* Adjust left/top if cropping rectangle is out of bounds */ |
| r->left = clamp_t(u32, r->left, 0, sink->f_width - r->width); |
| r->top = clamp_t(u32, r->top, 0, sink->f_height - r->height); |
| r->left = round_down(r->left, var->hor_offs_align); |
| |
| dbg("pad%d: (%d,%d)/%dx%d, sink fmt: %dx%d", |
| pad, r->left, r->top, r->width, r->height, |
| sink->f_width, sink->f_height); |
| } |
| |
| /* |
| * The video node ioctl operations |
| */ |
| static int fimc_vidioc_querycap_capture(struct file *file, void *priv, |
| struct v4l2_capability *cap) |
| { |
| struct fimc_dev *fimc = video_drvdata(file); |
| |
| strncpy(cap->driver, fimc->pdev->name, sizeof(cap->driver) - 1); |
| strncpy(cap->card, fimc->pdev->name, sizeof(cap->card) - 1); |
| cap->bus_info[0] = 0; |
| cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_CAPTURE_MPLANE; |
| |
| return 0; |
| } |
| |
| static int fimc_cap_enum_fmt_mplane(struct file *file, void *priv, |
| struct v4l2_fmtdesc *f) |
| { |
| struct fimc_fmt *fmt; |
| |
| fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM | FMT_FLAGS_M2M, |
| f->index); |
| if (!fmt) |
| return -EINVAL; |
| strncpy(f->description, fmt->name, sizeof(f->description) - 1); |
| f->pixelformat = fmt->fourcc; |
| if (fmt->fourcc == V4L2_MBUS_FMT_JPEG_1X8) |
| f->flags |= V4L2_FMT_FLAG_COMPRESSED; |
| return 0; |
| } |
| |
| /** |
| * fimc_pipeline_try_format - negotiate and/or set formats at pipeline |
| * elements |
| * @ctx: FIMC capture context |
| * @tfmt: media bus format to try/set on subdevs |
| * @fmt_id: fimc pixel format id corresponding to returned @tfmt (output) |
| * @set: true to set format on subdevs, false to try only |
| */ |
| static int fimc_pipeline_try_format(struct fimc_ctx *ctx, |
| struct v4l2_mbus_framefmt *tfmt, |
| struct fimc_fmt **fmt_id, |
| bool set) |
| { |
| struct fimc_dev *fimc = ctx->fimc_dev; |
| struct v4l2_subdev *sd = fimc->pipeline.subdevs[IDX_SENSOR]; |
| struct v4l2_subdev *csis = fimc->pipeline.subdevs[IDX_CSIS]; |
| struct v4l2_subdev_format sfmt; |
| struct v4l2_mbus_framefmt *mf = &sfmt.format; |
| struct fimc_fmt *ffmt = NULL; |
| int ret, i = 0; |
| |
| if (WARN_ON(!sd || !tfmt)) |
| return -EINVAL; |
| |
| memset(&sfmt, 0, sizeof(sfmt)); |
| sfmt.format = *tfmt; |
| |
| sfmt.which = set ? V4L2_SUBDEV_FORMAT_ACTIVE : V4L2_SUBDEV_FORMAT_TRY; |
| while (1) { |
| ffmt = fimc_find_format(NULL, mf->code != 0 ? &mf->code : NULL, |
| FMT_FLAGS_CAM, i++); |
| if (ffmt == NULL) { |
| /* |
| * Notify user-space if common pixel code for |
| * host and sensor does not exist. |
| */ |
| return -EINVAL; |
| } |
| mf->code = tfmt->code = ffmt->mbus_code; |
| |
| ret = v4l2_subdev_call(sd, pad, set_fmt, NULL, &sfmt); |
| if (ret) |
| return ret; |
| if (mf->code != tfmt->code) { |
| mf->code = 0; |
| continue; |
| } |
| if (mf->width != tfmt->width || mf->height != tfmt->height) { |
| u32 fcc = ffmt->fourcc; |
| tfmt->width = mf->width; |
| tfmt->height = mf->height; |
| ffmt = fimc_capture_try_format(ctx, |
| &tfmt->width, &tfmt->height, |
| NULL, &fcc, FIMC_SD_PAD_SOURCE); |
| if (ffmt && ffmt->mbus_code) |
| mf->code = ffmt->mbus_code; |
| if (mf->width != tfmt->width || |
| mf->height != tfmt->height) |
| continue; |
| tfmt->code = mf->code; |
| } |
| if (csis) |
| ret = v4l2_subdev_call(csis, pad, set_fmt, NULL, &sfmt); |
| |
| if (mf->code == tfmt->code && |
| mf->width == tfmt->width && mf->height == tfmt->height) |
| break; |
| } |
| |
| if (fmt_id && ffmt) |
| *fmt_id = ffmt; |
| *tfmt = *mf; |
| |
| dbg("code: 0x%x, %dx%d, %p", mf->code, mf->width, mf->height, ffmt); |
| return 0; |
| } |
| |
| static int fimc_cap_g_fmt_mplane(struct file *file, void *fh, |
| struct v4l2_format *f) |
| { |
| struct fimc_dev *fimc = video_drvdata(file); |
| struct fimc_ctx *ctx = fimc->vid_cap.ctx; |
| |
| if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) |
| return -EINVAL; |
| |
| return fimc_fill_format(&ctx->d_frame, f); |
| } |
| |
| static int fimc_cap_try_fmt_mplane(struct file *file, void *fh, |
| struct v4l2_format *f) |
| { |
| struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp; |
| struct fimc_dev *fimc = video_drvdata(file); |
| struct fimc_ctx *ctx = fimc->vid_cap.ctx; |
| struct v4l2_mbus_framefmt mf; |
| struct fimc_fmt *ffmt = NULL; |
| |
| if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) |
| return -EINVAL; |
| |
| if (pix->pixelformat == V4L2_PIX_FMT_JPEG) { |
| fimc_capture_try_format(ctx, &pix->width, &pix->height, |
| NULL, &pix->pixelformat, |
| FIMC_SD_PAD_SINK); |
| ctx->s_frame.f_width = pix->width; |
| ctx->s_frame.f_height = pix->height; |
| } |
| ffmt = fimc_capture_try_format(ctx, &pix->width, &pix->height, |
| NULL, &pix->pixelformat, |
| FIMC_SD_PAD_SOURCE); |
| if (!ffmt) |
| return -EINVAL; |
| |
| if (!fimc->vid_cap.user_subdev_api) { |
| mf.width = pix->width; |
| mf.height = pix->height; |
| mf.code = ffmt->mbus_code; |
| fimc_md_graph_lock(fimc); |
| fimc_pipeline_try_format(ctx, &mf, &ffmt, false); |
| fimc_md_graph_unlock(fimc); |
| |
| pix->width = mf.width; |
| pix->height = mf.height; |
| if (ffmt) |
| pix->pixelformat = ffmt->fourcc; |
| } |
| |
| fimc_adjust_mplane_format(ffmt, pix->width, pix->height, pix); |
| return 0; |
| } |
| |
| static void fimc_capture_mark_jpeg_xfer(struct fimc_ctx *ctx, bool jpeg) |
| { |
| ctx->scaler.enabled = !jpeg; |
| fimc_ctrls_activate(ctx, !jpeg); |
| |
| if (jpeg) |
| set_bit(ST_CAPT_JPEG, &ctx->fimc_dev->state); |
| else |
| clear_bit(ST_CAPT_JPEG, &ctx->fimc_dev->state); |
| } |
| |
| static int fimc_capture_set_format(struct fimc_dev *fimc, struct v4l2_format *f) |
| { |
| struct fimc_ctx *ctx = fimc->vid_cap.ctx; |
| struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp; |
| struct v4l2_mbus_framefmt *mf = &fimc->vid_cap.mf; |
| struct fimc_frame *ff = &ctx->d_frame; |
| struct fimc_fmt *s_fmt = NULL; |
| int ret, i; |
| |
| if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) |
| return -EINVAL; |
| if (vb2_is_busy(&fimc->vid_cap.vbq)) |
| return -EBUSY; |
| |
| /* Pre-configure format at camera interface input, for JPEG only */ |
| if (pix->pixelformat == V4L2_PIX_FMT_JPEG) { |
| fimc_capture_try_format(ctx, &pix->width, &pix->height, |
| NULL, &pix->pixelformat, |
| FIMC_SD_PAD_SINK); |
| ctx->s_frame.f_width = pix->width; |
| ctx->s_frame.f_height = pix->height; |
| } |
| /* Try the format at the scaler and the DMA output */ |
| ff->fmt = fimc_capture_try_format(ctx, &pix->width, &pix->height, |
| NULL, &pix->pixelformat, |
| FIMC_SD_PAD_SOURCE); |
| if (!ff->fmt) |
| return -EINVAL; |
| |
| /* Update RGB Alpha control state and value range */ |
| fimc_alpha_ctrl_update(ctx); |
| |
| /* Try to match format at the host and the sensor */ |
| if (!fimc->vid_cap.user_subdev_api) { |
| mf->code = ff->fmt->mbus_code; |
| mf->width = pix->width; |
| mf->height = pix->height; |
| |
| fimc_md_graph_lock(fimc); |
| ret = fimc_pipeline_try_format(ctx, mf, &s_fmt, true); |
| fimc_md_graph_unlock(fimc); |
| if (ret) |
| return ret; |
| pix->width = mf->width; |
| pix->height = mf->height; |
| } |
| fimc_adjust_mplane_format(ff->fmt, pix->width, pix->height, pix); |
| for (i = 0; i < ff->fmt->colplanes; i++) |
| ff->payload[i] = |
| (pix->width * pix->height * ff->fmt->depth[i]) / 8; |
| |
| set_frame_bounds(ff, pix->width, pix->height); |
| /* Reset the composition rectangle if not yet configured */ |
| if (!(ctx->state & FIMC_DST_CROP)) |
| set_frame_crop(ff, 0, 0, pix->width, pix->height); |
| |
| fimc_capture_mark_jpeg_xfer(ctx, fimc_fmt_is_jpeg(ff->fmt->color)); |
| |
| /* Reset cropping and set format at the camera interface input */ |
| if (!fimc->vid_cap.user_subdev_api) { |
| ctx->s_frame.fmt = s_fmt; |
| set_frame_bounds(&ctx->s_frame, pix->width, pix->height); |
| set_frame_crop(&ctx->s_frame, 0, 0, pix->width, pix->height); |
| } |
| |
| return ret; |
| } |
| |
| static int fimc_cap_s_fmt_mplane(struct file *file, void *priv, |
| struct v4l2_format *f) |
| { |
| struct fimc_dev *fimc = video_drvdata(file); |
| |
| return fimc_capture_set_format(fimc, f); |
| } |
| |
| static int fimc_cap_enum_input(struct file *file, void *priv, |
| struct v4l2_input *i) |
| { |
| struct fimc_dev *fimc = video_drvdata(file); |
| struct v4l2_subdev *sd = fimc->pipeline.subdevs[IDX_SENSOR]; |
| |
| if (i->index != 0) |
| return -EINVAL; |
| |
| i->type = V4L2_INPUT_TYPE_CAMERA; |
| if (sd) |
| strlcpy(i->name, sd->name, sizeof(i->name)); |
| return 0; |
| } |
| |
| static int fimc_cap_s_input(struct file *file, void *priv, unsigned int i) |
| { |
| return i == 0 ? i : -EINVAL; |
| } |
| |
| static int fimc_cap_g_input(struct file *file, void *priv, unsigned int *i) |
| { |
| *i = 0; |
| return 0; |
| } |
| |
| /** |
| * fimc_pipeline_validate - check for formats inconsistencies |
| * between source and sink pad of each link |
| * |
| * Return 0 if all formats match or -EPIPE otherwise. |
| */ |
| static int fimc_pipeline_validate(struct fimc_dev *fimc) |
| { |
| struct v4l2_subdev_format sink_fmt, src_fmt; |
| struct fimc_vid_cap *vid_cap = &fimc->vid_cap; |
| struct v4l2_subdev *sd; |
| struct media_pad *pad; |
| int ret; |
| |
| /* Start with the video capture node pad */ |
| pad = media_entity_remote_source(&vid_cap->vd_pad); |
| if (pad == NULL) |
| return -EPIPE; |
| /* FIMC.{N} subdevice */ |
| sd = media_entity_to_v4l2_subdev(pad->entity); |
| |
| while (1) { |
| /* Retrieve format at the sink pad */ |
| pad = &sd->entity.pads[0]; |
| if (!(pad->flags & MEDIA_PAD_FL_SINK)) |
| break; |
| /* Don't call FIMC subdev operation to avoid nested locking */ |
| if (sd == &fimc->vid_cap.subdev) { |
| struct fimc_frame *ff = &vid_cap->ctx->s_frame; |
| sink_fmt.format.width = ff->f_width; |
| sink_fmt.format.height = ff->f_height; |
| sink_fmt.format.code = ff->fmt ? ff->fmt->mbus_code : 0; |
| } else { |
| sink_fmt.pad = pad->index; |
| sink_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; |
| ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &sink_fmt); |
| if (ret < 0 && ret != -ENOIOCTLCMD) |
| return -EPIPE; |
| } |
| /* Retrieve format at the source pad */ |
| pad = media_entity_remote_source(pad); |
| if (pad == NULL || |
| media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV) |
| break; |
| |
| sd = media_entity_to_v4l2_subdev(pad->entity); |
| src_fmt.pad = pad->index; |
| src_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; |
| ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &src_fmt); |
| if (ret < 0 && ret != -ENOIOCTLCMD) |
| return -EPIPE; |
| |
| if (src_fmt.format.width != sink_fmt.format.width || |
| src_fmt.format.height != sink_fmt.format.height || |
| src_fmt.format.code != sink_fmt.format.code) |
| return -EPIPE; |
| } |
| return 0; |
| } |
| |
| static int fimc_cap_streamon(struct file *file, void *priv, |
| enum v4l2_buf_type type) |
| { |
| struct fimc_dev *fimc = video_drvdata(file); |
| struct fimc_pipeline *p = &fimc->pipeline; |
| int ret; |
| |
| if (fimc_capture_active(fimc)) |
| return -EBUSY; |
| |
| media_entity_pipeline_start(&p->subdevs[IDX_SENSOR]->entity, |
| p->m_pipeline); |
| |
| if (fimc->vid_cap.user_subdev_api) { |
| ret = fimc_pipeline_validate(fimc); |
| if (ret) |
| return ret; |
| } |
| return vb2_streamon(&fimc->vid_cap.vbq, type); |
| } |
| |
| static int fimc_cap_streamoff(struct file *file, void *priv, |
| enum v4l2_buf_type type) |
| { |
| struct fimc_dev *fimc = video_drvdata(file); |
| struct v4l2_subdev *sd = fimc->pipeline.subdevs[IDX_SENSOR]; |
| int ret; |
| |
| ret = vb2_streamoff(&fimc->vid_cap.vbq, type); |
| if (ret == 0) |
| media_entity_pipeline_stop(&sd->entity); |
| return ret; |
| } |
| |
| static int fimc_cap_reqbufs(struct file *file, void *priv, |
| struct v4l2_requestbuffers *reqbufs) |
| { |
| struct fimc_dev *fimc = video_drvdata(file); |
| int ret = vb2_reqbufs(&fimc->vid_cap.vbq, reqbufs); |
| |
| if (!ret) |
| fimc->vid_cap.reqbufs_count = reqbufs->count; |
| return ret; |
| } |
| |
| static int fimc_cap_querybuf(struct file *file, void *priv, |
| struct v4l2_buffer *buf) |
| { |
| struct fimc_dev *fimc = video_drvdata(file); |
| |
| return vb2_querybuf(&fimc->vid_cap.vbq, buf); |
| } |
| |
| static int fimc_cap_qbuf(struct file *file, void *priv, |
| struct v4l2_buffer *buf) |
| { |
| struct fimc_dev *fimc = video_drvdata(file); |
| |
| return vb2_qbuf(&fimc->vid_cap.vbq, buf); |
| } |
| |
| static int fimc_cap_dqbuf(struct file *file, void *priv, |
| struct v4l2_buffer *buf) |
| { |
| struct fimc_dev *fimc = video_drvdata(file); |
| |
| return vb2_dqbuf(&fimc->vid_cap.vbq, buf, file->f_flags & O_NONBLOCK); |
| } |
| |
| static int fimc_cap_create_bufs(struct file *file, void *priv, |
| struct v4l2_create_buffers *create) |
| { |
| struct fimc_dev *fimc = video_drvdata(file); |
| |
| return vb2_create_bufs(&fimc->vid_cap.vbq, create); |
| } |
| |
| static int fimc_cap_prepare_buf(struct file *file, void *priv, |
| struct v4l2_buffer *b) |
| { |
| struct fimc_dev *fimc = video_drvdata(file); |
| |
| return vb2_prepare_buf(&fimc->vid_cap.vbq, b); |
| } |
| |
| static int fimc_cap_g_selection(struct file *file, void *fh, |
| struct v4l2_selection *s) |
| { |
| struct fimc_dev *fimc = video_drvdata(file); |
| struct fimc_ctx *ctx = fimc->vid_cap.ctx; |
| struct fimc_frame *f = &ctx->s_frame; |
| |
| if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) |
| return -EINVAL; |
| |
| switch (s->target) { |
| case V4L2_SEL_TGT_COMPOSE_DEFAULT: |
| case V4L2_SEL_TGT_COMPOSE_BOUNDS: |
| f = &ctx->d_frame; |
| case V4L2_SEL_TGT_CROP_BOUNDS: |
| case V4L2_SEL_TGT_CROP_DEFAULT: |
| s->r.left = 0; |
| s->r.top = 0; |
| s->r.width = f->o_width; |
| s->r.height = f->o_height; |
| return 0; |
| |
| case V4L2_SEL_TGT_COMPOSE_ACTIVE: |
| f = &ctx->d_frame; |
| case V4L2_SEL_TGT_CROP_ACTIVE: |
| s->r.left = f->offs_h; |
| s->r.top = f->offs_v; |
| s->r.width = f->width; |
| s->r.height = f->height; |
| return 0; |
| } |
| |
| return -EINVAL; |
| } |
| |
| /* Return 1 if rectangle a is enclosed in rectangle b, or 0 otherwise. */ |
| int enclosed_rectangle(struct v4l2_rect *a, struct v4l2_rect *b) |
| { |
| if (a->left < b->left || a->top < b->top) |
| return 0; |
| if (a->left + a->width > b->left + b->width) |
| return 0; |
| if (a->top + a->height > b->top + b->height) |
| return 0; |
| |
| return 1; |
| } |
| |
| static int fimc_cap_s_selection(struct file *file, void *fh, |
| struct v4l2_selection *s) |
| { |
| struct fimc_dev *fimc = video_drvdata(file); |
| struct fimc_ctx *ctx = fimc->vid_cap.ctx; |
| struct v4l2_rect rect = s->r; |
| struct fimc_frame *f; |
| unsigned long flags; |
| unsigned int pad; |
| |
| if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) |
| return -EINVAL; |
| |
| switch (s->target) { |
| case V4L2_SEL_TGT_COMPOSE_DEFAULT: |
| case V4L2_SEL_TGT_COMPOSE_BOUNDS: |
| case V4L2_SEL_TGT_COMPOSE_ACTIVE: |
| f = &ctx->d_frame; |
| pad = FIMC_SD_PAD_SOURCE; |
| break; |
| case V4L2_SEL_TGT_CROP_BOUNDS: |
| case V4L2_SEL_TGT_CROP_DEFAULT: |
| case V4L2_SEL_TGT_CROP_ACTIVE: |
| f = &ctx->s_frame; |
| pad = FIMC_SD_PAD_SINK; |
| break; |
| default: |
| return -EINVAL; |
| } |
| |
| fimc_capture_try_crop(ctx, &rect, pad); |
| |
| if (s->flags & V4L2_SEL_FLAG_LE && |
| !enclosed_rectangle(&rect, &s->r)) |
| return -ERANGE; |
| |
| if (s->flags & V4L2_SEL_FLAG_GE && |
| !enclosed_rectangle(&s->r, &rect)) |
| return -ERANGE; |
| |
| s->r = rect; |
| spin_lock_irqsave(&fimc->slock, flags); |
| set_frame_crop(f, s->r.left, s->r.top, s->r.width, |
| s->r.height); |
| spin_unlock_irqrestore(&fimc->slock, flags); |
| |
| set_bit(ST_CAPT_APPLY_CFG, &fimc->state); |
| return 0; |
| } |
| |
| static const struct v4l2_ioctl_ops fimc_capture_ioctl_ops = { |
| .vidioc_querycap = fimc_vidioc_querycap_capture, |
| |
| .vidioc_enum_fmt_vid_cap_mplane = fimc_cap_enum_fmt_mplane, |
| .vidioc_try_fmt_vid_cap_mplane = fimc_cap_try_fmt_mplane, |
| .vidioc_s_fmt_vid_cap_mplane = fimc_cap_s_fmt_mplane, |
| .vidioc_g_fmt_vid_cap_mplane = fimc_cap_g_fmt_mplane, |
| |
| .vidioc_reqbufs = fimc_cap_reqbufs, |
| .vidioc_querybuf = fimc_cap_querybuf, |
| |
| .vidioc_qbuf = fimc_cap_qbuf, |
| .vidioc_dqbuf = fimc_cap_dqbuf, |
| |
| .vidioc_prepare_buf = fimc_cap_prepare_buf, |
| .vidioc_create_bufs = fimc_cap_create_bufs, |
| |
| .vidioc_streamon = fimc_cap_streamon, |
| .vidioc_streamoff = fimc_cap_streamoff, |
| |
| .vidioc_g_selection = fimc_cap_g_selection, |
| .vidioc_s_selection = fimc_cap_s_selection, |
| |
| .vidioc_enum_input = fimc_cap_enum_input, |
| .vidioc_s_input = fimc_cap_s_input, |
| .vidioc_g_input = fimc_cap_g_input, |
| }; |
| |
| /* Capture subdev media entity operations */ |
| static int fimc_link_setup(struct media_entity *entity, |
| const struct media_pad *local, |
| const struct media_pad *remote, u32 flags) |
| { |
| struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity); |
| struct fimc_dev *fimc = v4l2_get_subdevdata(sd); |
| |
| if (media_entity_type(remote->entity) != MEDIA_ENT_T_V4L2_SUBDEV) |
| return -EINVAL; |
| |
| if (WARN_ON(fimc == NULL)) |
| return 0; |
| |
| dbg("%s --> %s, flags: 0x%x. input: 0x%x", |
| local->entity->name, remote->entity->name, flags, |
| fimc->vid_cap.input); |
| |
| if (flags & MEDIA_LNK_FL_ENABLED) { |
| if (fimc->vid_cap.input != 0) |
| return -EBUSY; |
| fimc->vid_cap.input = sd->grp_id; |
| return 0; |
| } |
| |
| fimc->vid_cap.input = 0; |
| return 0; |
| } |
| |
| static const struct media_entity_operations fimc_sd_media_ops = { |
| .link_setup = fimc_link_setup, |
| }; |
| |
| /** |
| * fimc_sensor_notify - v4l2_device notification from a sensor subdev |
| * @sd: pointer to a subdev generating the notification |
| * @notification: the notification type, must be S5P_FIMC_TX_END_NOTIFY |
| * @arg: pointer to an u32 type integer that stores the frame payload value |
| * |
| * The End Of Frame notification sent by sensor subdev in its still capture |
| * mode. If there is only a single VSYNC generated by the sensor at the |
| * beginning of a frame transmission, FIMC does not issue the LastIrq |
| * (end of frame) interrupt. And this notification is used to complete the |
| * frame capture and returning a buffer to user-space. Subdev drivers should |
| * call this notification from their last 'End of frame capture' interrupt. |
| */ |
| void fimc_sensor_notify(struct v4l2_subdev *sd, unsigned int notification, |
| void *arg) |
| { |
| struct fimc_sensor_info *sensor; |
| struct fimc_vid_buffer *buf; |
| struct fimc_md *fmd; |
| struct fimc_dev *fimc; |
| unsigned long flags; |
| |
| if (sd == NULL) |
| return; |
| |
| sensor = v4l2_get_subdev_hostdata(sd); |
| fmd = entity_to_fimc_mdev(&sd->entity); |
| |
| spin_lock_irqsave(&fmd->slock, flags); |
| fimc = sensor ? sensor->host : NULL; |
| |
| if (fimc && arg && notification == S5P_FIMC_TX_END_NOTIFY && |
| test_bit(ST_CAPT_PEND, &fimc->state)) { |
| unsigned long irq_flags; |
| spin_lock_irqsave(&fimc->slock, irq_flags); |
| if (!list_empty(&fimc->vid_cap.active_buf_q)) { |
| buf = list_entry(fimc->vid_cap.active_buf_q.next, |
| struct fimc_vid_buffer, list); |
| vb2_set_plane_payload(&buf->vb, 0, *((u32 *)arg)); |
| } |
| fimc_capture_irq_handler(fimc, 1); |
| fimc_deactivate_capture(fimc); |
| spin_unlock_irqrestore(&fimc->slock, irq_flags); |
| } |
| spin_unlock_irqrestore(&fmd->slock, flags); |
| } |
| |
| static int fimc_subdev_enum_mbus_code(struct v4l2_subdev *sd, |
| struct v4l2_subdev_fh *fh, |
| struct v4l2_subdev_mbus_code_enum *code) |
| { |
| struct fimc_fmt *fmt; |
| |
| fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, code->index); |
| if (!fmt) |
| return -EINVAL; |
| code->code = fmt->mbus_code; |
| return 0; |
| } |
| |
| static int fimc_subdev_get_fmt(struct v4l2_subdev *sd, |
| struct v4l2_subdev_fh *fh, |
| struct v4l2_subdev_format *fmt) |
| { |
| struct fimc_dev *fimc = v4l2_get_subdevdata(sd); |
| struct fimc_ctx *ctx = fimc->vid_cap.ctx; |
| struct v4l2_mbus_framefmt *mf; |
| struct fimc_frame *ff; |
| |
| if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { |
| mf = v4l2_subdev_get_try_format(fh, fmt->pad); |
| fmt->format = *mf; |
| return 0; |
| } |
| mf = &fmt->format; |
| mf->colorspace = V4L2_COLORSPACE_JPEG; |
| ff = fmt->pad == FIMC_SD_PAD_SINK ? &ctx->s_frame : &ctx->d_frame; |
| |
| mutex_lock(&fimc->lock); |
| /* The pixel code is same on both input and output pad */ |
| if (!WARN_ON(ctx->s_frame.fmt == NULL)) |
| mf->code = ctx->s_frame.fmt->mbus_code; |
| mf->width = ff->f_width; |
| mf->height = ff->f_height; |
| mutex_unlock(&fimc->lock); |
| |
| return 0; |
| } |
| |
| static int fimc_subdev_set_fmt(struct v4l2_subdev *sd, |
| struct v4l2_subdev_fh *fh, |
| struct v4l2_subdev_format *fmt) |
| { |
| struct fimc_dev *fimc = v4l2_get_subdevdata(sd); |
| struct v4l2_mbus_framefmt *mf = &fmt->format; |
| struct fimc_ctx *ctx = fimc->vid_cap.ctx; |
| struct fimc_frame *ff; |
| struct fimc_fmt *ffmt; |
| |
| dbg("pad%d: code: 0x%x, %dx%d", |
| fmt->pad, mf->code, mf->width, mf->height); |
| |
| if (fmt->pad == FIMC_SD_PAD_SOURCE && |
| vb2_is_busy(&fimc->vid_cap.vbq)) |
| return -EBUSY; |
| |
| mutex_lock(&fimc->lock); |
| ffmt = fimc_capture_try_format(ctx, &mf->width, &mf->height, |
| &mf->code, NULL, fmt->pad); |
| mutex_unlock(&fimc->lock); |
| mf->colorspace = V4L2_COLORSPACE_JPEG; |
| |
| if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { |
| mf = v4l2_subdev_get_try_format(fh, fmt->pad); |
| *mf = fmt->format; |
| return 0; |
| } |
| /* Update RGB Alpha control state and value range */ |
| fimc_alpha_ctrl_update(ctx); |
| |
| fimc_capture_mark_jpeg_xfer(ctx, fimc_fmt_is_jpeg(ffmt->color)); |
| |
| ff = fmt->pad == FIMC_SD_PAD_SINK ? |
| &ctx->s_frame : &ctx->d_frame; |
| |
| mutex_lock(&fimc->lock); |
| set_frame_bounds(ff, mf->width, mf->height); |
| fimc->vid_cap.mf = *mf; |
| ff->fmt = ffmt; |
| |
| /* Reset the crop rectangle if required. */ |
| if (!(fmt->pad == FIMC_SD_PAD_SOURCE && (ctx->state & FIMC_DST_CROP))) |
| set_frame_crop(ff, 0, 0, mf->width, mf->height); |
| |
| if (fmt->pad == FIMC_SD_PAD_SINK) |
| ctx->state &= ~FIMC_DST_CROP; |
| mutex_unlock(&fimc->lock); |
| return 0; |
| } |
| |
| static int fimc_subdev_get_crop(struct v4l2_subdev *sd, |
| struct v4l2_subdev_fh *fh, |
| struct v4l2_subdev_crop *crop) |
| { |
| struct fimc_dev *fimc = v4l2_get_subdevdata(sd); |
| struct fimc_ctx *ctx = fimc->vid_cap.ctx; |
| struct v4l2_rect *r = &crop->rect; |
| struct fimc_frame *ff; |
| |
| if (crop->which == V4L2_SUBDEV_FORMAT_TRY) { |
| crop->rect = *v4l2_subdev_get_try_crop(fh, crop->pad); |
| return 0; |
| } |
| ff = crop->pad == FIMC_SD_PAD_SINK ? |
| &ctx->s_frame : &ctx->d_frame; |
| |
| mutex_lock(&fimc->lock); |
| r->left = ff->offs_h; |
| r->top = ff->offs_v; |
| r->width = ff->width; |
| r->height = ff->height; |
| mutex_unlock(&fimc->lock); |
| |
| dbg("ff:%p, pad%d: l:%d, t:%d, %dx%d, f_w: %d, f_h: %d", |
| ff, crop->pad, r->left, r->top, r->width, r->height, |
| ff->f_width, ff->f_height); |
| |
| return 0; |
| } |
| |
| static int fimc_subdev_set_crop(struct v4l2_subdev *sd, |
| struct v4l2_subdev_fh *fh, |
| struct v4l2_subdev_crop *crop) |
| { |
| struct fimc_dev *fimc = v4l2_get_subdevdata(sd); |
| struct fimc_ctx *ctx = fimc->vid_cap.ctx; |
| struct v4l2_rect *r = &crop->rect; |
| struct fimc_frame *ff; |
| unsigned long flags; |
| |
| dbg("(%d,%d)/%dx%d", r->left, r->top, r->width, r->height); |
| |
| ff = crop->pad == FIMC_SD_PAD_SOURCE ? |
| &ctx->d_frame : &ctx->s_frame; |
| |
| mutex_lock(&fimc->lock); |
| fimc_capture_try_crop(ctx, r, crop->pad); |
| |
| if (crop->which == V4L2_SUBDEV_FORMAT_TRY) { |
| mutex_unlock(&fimc->lock); |
| *v4l2_subdev_get_try_crop(fh, crop->pad) = *r; |
| return 0; |
| } |
| spin_lock_irqsave(&fimc->slock, flags); |
| set_frame_crop(ff, r->left, r->top, r->width, r->height); |
| if (crop->pad == FIMC_SD_PAD_SOURCE) |
| ctx->state |= FIMC_DST_CROP; |
| |
| set_bit(ST_CAPT_APPLY_CFG, &fimc->state); |
| spin_unlock_irqrestore(&fimc->slock, flags); |
| |
| dbg("pad%d: (%d,%d)/%dx%d", crop->pad, r->left, r->top, |
| r->width, r->height); |
| |
| mutex_unlock(&fimc->lock); |
| return 0; |
| } |
| |
| static struct v4l2_subdev_pad_ops fimc_subdev_pad_ops = { |
| .enum_mbus_code = fimc_subdev_enum_mbus_code, |
| .get_fmt = fimc_subdev_get_fmt, |
| .set_fmt = fimc_subdev_set_fmt, |
| .get_crop = fimc_subdev_get_crop, |
| .set_crop = fimc_subdev_set_crop, |
| }; |
| |
| static struct v4l2_subdev_ops fimc_subdev_ops = { |
| .pad = &fimc_subdev_pad_ops, |
| }; |
| |
| /* Set default format at the sensor and host interface */ |
| static int fimc_capture_set_default_format(struct fimc_dev *fimc) |
| { |
| struct v4l2_format fmt = { |
| .type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE, |
| .fmt.pix_mp = { |
| .width = 640, |
| .height = 480, |
| .pixelformat = V4L2_PIX_FMT_YUYV, |
| .field = V4L2_FIELD_NONE, |
| .colorspace = V4L2_COLORSPACE_JPEG, |
| }, |
| }; |
| |
| return fimc_capture_set_format(fimc, &fmt); |
| } |
| |
| /* fimc->lock must be already initialized */ |
| static int fimc_register_capture_device(struct fimc_dev *fimc, |
| struct v4l2_device *v4l2_dev) |
| { |
| struct video_device *vfd; |
| struct fimc_vid_cap *vid_cap; |
| struct fimc_ctx *ctx; |
| struct vb2_queue *q; |
| int ret = -ENOMEM; |
| |
| ctx = kzalloc(sizeof *ctx, GFP_KERNEL); |
| if (!ctx) |
| return -ENOMEM; |
| |
| ctx->fimc_dev = fimc; |
| ctx->in_path = FIMC_IO_CAMERA; |
| ctx->out_path = FIMC_IO_DMA; |
| ctx->state = FIMC_CTX_CAP; |
| ctx->s_frame.fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, 0); |
| ctx->d_frame.fmt = ctx->s_frame.fmt; |
| |
| vfd = video_device_alloc(); |
| if (!vfd) { |
| v4l2_err(v4l2_dev, "Failed to allocate video device\n"); |
| goto err_vd_alloc; |
| } |
| |
| snprintf(vfd->name, sizeof(vfd->name), "fimc.%d.capture", fimc->id); |
| |
| vfd->fops = &fimc_capture_fops; |
| vfd->ioctl_ops = &fimc_capture_ioctl_ops; |
| vfd->v4l2_dev = v4l2_dev; |
| vfd->minor = -1; |
| vfd->release = video_device_release; |
| vfd->lock = &fimc->lock; |
| /* Locking in file operations other than ioctl should be done |
| by the driver, not the V4L2 core. |
| This driver needs auditing so that this flag can be removed. */ |
| set_bit(V4L2_FL_LOCK_ALL_FOPS, &vfd->flags); |
| video_set_drvdata(vfd, fimc); |
| |
| vid_cap = &fimc->vid_cap; |
| vid_cap->vfd = vfd; |
| vid_cap->active_buf_cnt = 0; |
| vid_cap->reqbufs_count = 0; |
| vid_cap->refcnt = 0; |
| |
| INIT_LIST_HEAD(&vid_cap->pending_buf_q); |
| INIT_LIST_HEAD(&vid_cap->active_buf_q); |
| vid_cap->ctx = ctx; |
| |
| q = &fimc->vid_cap.vbq; |
| memset(q, 0, sizeof(*q)); |
| q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE; |
| q->io_modes = VB2_MMAP | VB2_USERPTR; |
| q->drv_priv = fimc->vid_cap.ctx; |
| q->ops = &fimc_capture_qops; |
| q->mem_ops = &vb2_dma_contig_memops; |
| q->buf_struct_size = sizeof(struct fimc_vid_buffer); |
| |
| vb2_queue_init(q); |
| |
| vid_cap->vd_pad.flags = MEDIA_PAD_FL_SINK; |
| ret = media_entity_init(&vfd->entity, 1, &vid_cap->vd_pad, 0); |
| if (ret) |
| goto err_ent; |
| |
| ret = video_register_device(vfd, VFL_TYPE_GRABBER, -1); |
| if (ret) |
| goto err_vd; |
| |
| v4l2_info(v4l2_dev, "Registered %s as /dev/%s\n", |
| vfd->name, video_device_node_name(vfd)); |
| |
| vfd->ctrl_handler = &ctx->ctrl_handler; |
| return 0; |
| |
| err_vd: |
| media_entity_cleanup(&vfd->entity); |
| err_ent: |
| video_device_release(vfd); |
| err_vd_alloc: |
| kfree(ctx); |
| return ret; |
| } |
| |
| static int fimc_capture_subdev_registered(struct v4l2_subdev *sd) |
| { |
| struct fimc_dev *fimc = v4l2_get_subdevdata(sd); |
| int ret; |
| |
| ret = fimc_register_m2m_device(fimc, sd->v4l2_dev); |
| if (ret) |
| return ret; |
| |
| ret = fimc_register_capture_device(fimc, sd->v4l2_dev); |
| if (ret) |
| fimc_unregister_m2m_device(fimc); |
| |
| return ret; |
| } |
| |
| static void fimc_capture_subdev_unregistered(struct v4l2_subdev *sd) |
| { |
| struct fimc_dev *fimc = v4l2_get_subdevdata(sd); |
| |
| if (fimc == NULL) |
| return; |
| |
| fimc_unregister_m2m_device(fimc); |
| |
| if (fimc->vid_cap.vfd) { |
| media_entity_cleanup(&fimc->vid_cap.vfd->entity); |
| video_unregister_device(fimc->vid_cap.vfd); |
| fimc->vid_cap.vfd = NULL; |
| } |
| |
| kfree(fimc->vid_cap.ctx); |
| fimc->vid_cap.ctx = NULL; |
| } |
| |
| static const struct v4l2_subdev_internal_ops fimc_capture_sd_internal_ops = { |
| .registered = fimc_capture_subdev_registered, |
| .unregistered = fimc_capture_subdev_unregistered, |
| }; |
| |
| int fimc_initialize_capture_subdev(struct fimc_dev *fimc) |
| { |
| struct v4l2_subdev *sd = &fimc->vid_cap.subdev; |
| int ret; |
| |
| v4l2_subdev_init(sd, &fimc_subdev_ops); |
| sd->flags = V4L2_SUBDEV_FL_HAS_DEVNODE; |
| snprintf(sd->name, sizeof(sd->name), "FIMC.%d", fimc->pdev->id); |
| |
| fimc->vid_cap.sd_pads[FIMC_SD_PAD_SINK].flags = MEDIA_PAD_FL_SINK; |
| fimc->vid_cap.sd_pads[FIMC_SD_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE; |
| ret = media_entity_init(&sd->entity, FIMC_SD_PADS_NUM, |
| fimc->vid_cap.sd_pads, 0); |
| if (ret) |
| return ret; |
| |
| sd->entity.ops = &fimc_sd_media_ops; |
| sd->internal_ops = &fimc_capture_sd_internal_ops; |
| v4l2_set_subdevdata(sd, fimc); |
| return 0; |
| } |
| |
| void fimc_unregister_capture_subdev(struct fimc_dev *fimc) |
| { |
| struct v4l2_subdev *sd = &fimc->vid_cap.subdev; |
| |
| v4l2_device_unregister_subdev(sd); |
| media_entity_cleanup(&sd->entity); |
| v4l2_set_subdevdata(sd, NULL); |
| } |