diff options
Diffstat (limited to 'drivers/media/platform/sunxi/sun6i-csi/sun6i_video.c')
| -rw-r--r-- | drivers/media/platform/sunxi/sun6i-csi/sun6i_video.c | 679 |
1 files changed, 0 insertions, 679 deletions
diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_video.c b/drivers/media/platform/sunxi/sun6i-csi/sun6i_video.c deleted file mode 100644 index b04300c3811f..000000000000 --- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_video.c +++ /dev/null @@ -1,679 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0+ -/* - * Copyright (c) 2011-2018 Magewell Electronics Co., Ltd. (Nanjing) - * All rights reserved. - * Author: Yong Deng <yong.deng@magewell.com> - */ - -#include <linux/of.h> - -#include <media/v4l2-device.h> -#include <media/v4l2-event.h> -#include <media/v4l2-ioctl.h> -#include <media/v4l2-mc.h> -#include <media/videobuf2-dma-contig.h> -#include <media/videobuf2-v4l2.h> - -#include "sun6i_csi.h" -#include "sun6i_video.h" - -/* This is got from BSP sources. */ -#define MIN_WIDTH (32) -#define MIN_HEIGHT (32) -#define MAX_WIDTH (4800) -#define MAX_HEIGHT (4800) - -struct sun6i_csi_buffer { - struct vb2_v4l2_buffer vb; - struct list_head list; - - dma_addr_t dma_addr; - bool queued_to_csi; -}; - -static const u32 supported_pixformats[] = { - V4L2_PIX_FMT_SBGGR8, - V4L2_PIX_FMT_SGBRG8, - V4L2_PIX_FMT_SGRBG8, - V4L2_PIX_FMT_SRGGB8, - V4L2_PIX_FMT_SBGGR10, - V4L2_PIX_FMT_SGBRG10, - V4L2_PIX_FMT_SGRBG10, - V4L2_PIX_FMT_SRGGB10, - V4L2_PIX_FMT_SBGGR12, - V4L2_PIX_FMT_SGBRG12, - V4L2_PIX_FMT_SGRBG12, - V4L2_PIX_FMT_SRGGB12, - V4L2_PIX_FMT_YUYV, - V4L2_PIX_FMT_YVYU, - V4L2_PIX_FMT_UYVY, - V4L2_PIX_FMT_VYUY, - V4L2_PIX_FMT_HM12, - V4L2_PIX_FMT_NV12, - V4L2_PIX_FMT_NV21, - V4L2_PIX_FMT_YUV420, - V4L2_PIX_FMT_YVU420, - V4L2_PIX_FMT_NV16, - V4L2_PIX_FMT_NV61, - V4L2_PIX_FMT_YUV422P, -}; - -static bool is_pixformat_valid(unsigned int pixformat) -{ - unsigned int i; - - for (i = 0; i < ARRAY_SIZE(supported_pixformats); i++) - if (supported_pixformats[i] == pixformat) - return true; - - return false; -} - -static struct v4l2_subdev * -sun6i_video_remote_subdev(struct sun6i_video *video, u32 *pad) -{ - struct media_pad *remote; - - remote = media_entity_remote_pad(&video->pad); - - if (!remote || !is_media_entity_v4l2_subdev(remote->entity)) - return NULL; - - if (pad) - *pad = remote->index; - - return media_entity_to_v4l2_subdev(remote->entity); -} - -static int sun6i_video_queue_setup(struct vb2_queue *vq, - unsigned int *nbuffers, - unsigned int *nplanes, - unsigned int sizes[], - struct device *alloc_devs[]) -{ - struct sun6i_video *video = vb2_get_drv_priv(vq); - unsigned int size = video->fmt.fmt.pix.sizeimage; - - if (*nplanes) - return sizes[0] < size ? -EINVAL : 0; - - *nplanes = 1; - sizes[0] = size; - - return 0; -} - -static int sun6i_video_buffer_prepare(struct vb2_buffer *vb) -{ - struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); - struct sun6i_csi_buffer *buf = - container_of(vbuf, struct sun6i_csi_buffer, vb); - struct sun6i_video *video = vb2_get_drv_priv(vb->vb2_queue); - unsigned long size = video->fmt.fmt.pix.sizeimage; - - if (vb2_plane_size(vb, 0) < size) { - v4l2_err(video->vdev.v4l2_dev, "buffer too small (%lu < %lu)\n", - vb2_plane_size(vb, 0), size); - return -EINVAL; - } - - vb2_set_plane_payload(vb, 0, size); - - buf->dma_addr = vb2_dma_contig_plane_dma_addr(vb, 0); - - vbuf->field = video->fmt.fmt.pix.field; - - return 0; -} - -static int sun6i_video_start_streaming(struct vb2_queue *vq, unsigned int count) -{ - struct sun6i_video *video = vb2_get_drv_priv(vq); - struct sun6i_csi_buffer *buf; - struct sun6i_csi_buffer *next_buf; - struct sun6i_csi_config config; - struct v4l2_subdev *subdev; - unsigned long flags; - int ret; - - video->sequence = 0; - - ret = media_pipeline_start(&video->vdev.entity, &video->vdev.pipe); - if (ret < 0) - goto clear_dma_queue; - - if (video->mbus_code == 0) { - ret = -EINVAL; - goto stop_media_pipeline; - } - - subdev = sun6i_video_remote_subdev(video, NULL); - if (!subdev) - goto stop_media_pipeline; - - config.pixelformat = video->fmt.fmt.pix.pixelformat; - config.code = video->mbus_code; - config.field = video->fmt.fmt.pix.field; - config.width = video->fmt.fmt.pix.width; - config.height = video->fmt.fmt.pix.height; - - ret = sun6i_csi_update_config(video->csi, &config); - if (ret < 0) - goto stop_media_pipeline; - - spin_lock_irqsave(&video->dma_queue_lock, flags); - - buf = list_first_entry(&video->dma_queue, - struct sun6i_csi_buffer, list); - buf->queued_to_csi = true; - sun6i_csi_update_buf_addr(video->csi, buf->dma_addr); - - sun6i_csi_set_stream(video->csi, true); - - /* - * CSI will lookup the next dma buffer for next frame before the - * the current frame done IRQ triggered. This is not documented - * but reported by Ondřej Jirman. - * The BSP code has workaround for this too. It skip to mark the - * first buffer as frame done for VB2 and pass the second buffer - * to CSI in the first frame done ISR call. Then in second frame - * done ISR call, it mark the first buffer as frame done for VB2 - * and pass the third buffer to CSI. And so on. The bad thing is - * that the first buffer will be written twice and the first frame - * is dropped even the queued buffer is sufficient. - * So, I make some improvement here. Pass the next buffer to CSI - * just follow starting the CSI. In this case, the first frame - * will be stored in first buffer, second frame in second buffer. - * This method is used to avoid dropping the first frame, it - * would also drop frame when lacking of queued buffer. - */ - next_buf = list_next_entry(buf, list); - next_buf->queued_to_csi = true; - sun6i_csi_update_buf_addr(video->csi, next_buf->dma_addr); - - spin_unlock_irqrestore(&video->dma_queue_lock, flags); - - ret = v4l2_subdev_call(subdev, video, s_stream, 1); - if (ret && ret != -ENOIOCTLCMD) - goto stop_csi_stream; - - return 0; - -stop_csi_stream: - sun6i_csi_set_stream(video->csi, false); -stop_media_pipeline: - media_pipeline_stop(&video->vdev.entity); -clear_dma_queue: - spin_lock_irqsave(&video->dma_queue_lock, flags); - list_for_each_entry(buf, &video->dma_queue, list) - vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_QUEUED); - INIT_LIST_HEAD(&video->dma_queue); - spin_unlock_irqrestore(&video->dma_queue_lock, flags); - - return ret; -} - -static void sun6i_video_stop_streaming(struct vb2_queue *vq) -{ - struct sun6i_video *video = vb2_get_drv_priv(vq); - struct v4l2_subdev *subdev; - unsigned long flags; - struct sun6i_csi_buffer *buf; - - subdev = sun6i_video_remote_subdev(video, NULL); - if (subdev) - v4l2_subdev_call(subdev, video, s_stream, 0); - - sun6i_csi_set_stream(video->csi, false); - - media_pipeline_stop(&video->vdev.entity); - - /* Release all active buffers */ - spin_lock_irqsave(&video->dma_queue_lock, flags); - list_for_each_entry(buf, &video->dma_queue, list) - vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); - INIT_LIST_HEAD(&video->dma_queue); - spin_unlock_irqrestore(&video->dma_queue_lock, flags); -} - -static void sun6i_video_buffer_queue(struct vb2_buffer *vb) -{ - struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); - struct sun6i_csi_buffer *buf = - container_of(vbuf, struct sun6i_csi_buffer, vb); - struct sun6i_video *video = vb2_get_drv_priv(vb->vb2_queue); - unsigned long flags; - - spin_lock_irqsave(&video->dma_queue_lock, flags); - buf->queued_to_csi = false; - list_add_tail(&buf->list, &video->dma_queue); - spin_unlock_irqrestore(&video->dma_queue_lock, flags); -} - -void sun6i_video_frame_done(struct sun6i_video *video) -{ - struct sun6i_csi_buffer *buf; - struct sun6i_csi_buffer *next_buf; - struct vb2_v4l2_buffer *vbuf; - - spin_lock(&video->dma_queue_lock); - - buf = list_first_entry(&video->dma_queue, - struct sun6i_csi_buffer, list); - if (list_is_last(&buf->list, &video->dma_queue)) { - dev_dbg(video->csi->dev, "Frame dropped!\n"); - goto unlock; - } - - next_buf = list_next_entry(buf, list); - /* If a new buffer (#next_buf) had not been queued to CSI, the old - * buffer (#buf) is still holding by CSI for storing the next - * frame. So, we queue a new buffer (#next_buf) to CSI then wait - * for next ISR call. - */ - if (!next_buf->queued_to_csi) { - next_buf->queued_to_csi = true; - sun6i_csi_update_buf_addr(video->csi, next_buf->dma_addr); - dev_dbg(video->csi->dev, "Frame dropped!\n"); - goto unlock; - } - - list_del(&buf->list); - vbuf = &buf->vb; - vbuf->vb2_buf.timestamp = ktime_get_ns(); - vbuf->sequence = video->sequence; - vb2_buffer_done(&vbuf->vb2_buf, VB2_BUF_STATE_DONE); - - /* Prepare buffer for next frame but one. */ - if (!list_is_last(&next_buf->list, &video->dma_queue)) { - next_buf = list_next_entry(next_buf, list); - next_buf->queued_to_csi = true; - sun6i_csi_update_buf_addr(video->csi, next_buf->dma_addr); - } else { - dev_dbg(video->csi->dev, "Next frame will be dropped!\n"); - } - -unlock: - video->sequence++; - spin_unlock(&video->dma_queue_lock); -} - -static const struct vb2_ops sun6i_csi_vb2_ops = { - .queue_setup = sun6i_video_queue_setup, - .wait_prepare = vb2_ops_wait_prepare, - .wait_finish = vb2_ops_wait_finish, - .buf_prepare = sun6i_video_buffer_prepare, - .start_streaming = sun6i_video_start_streaming, - .stop_streaming = sun6i_video_stop_streaming, - .buf_queue = sun6i_video_buffer_queue, -}; - -static int vidioc_querycap(struct file *file, void *priv, - struct v4l2_capability *cap) -{ - struct sun6i_video *video = video_drvdata(file); - - strscpy(cap->driver, "sun6i-video", sizeof(cap->driver)); - strscpy(cap->card, video->vdev.name, sizeof(cap->card)); - snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s", - video->csi->dev->of_node->name); - - return 0; -} - -static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, - struct v4l2_fmtdesc *f) -{ - u32 index = f->index; - - if (index >= ARRAY_SIZE(supported_pixformats)) - return -EINVAL; - - f->pixelformat = supported_pixformats[index]; - - return 0; -} - -static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, - struct v4l2_format *fmt) -{ - struct sun6i_video *video = video_drvdata(file); - - *fmt = video->fmt; - - return 0; -} - -static int sun6i_video_try_fmt(struct sun6i_video *video, - struct v4l2_format *f) -{ - struct v4l2_pix_format *pixfmt = &f->fmt.pix; - int bpp; - - if (!is_pixformat_valid(pixfmt->pixelformat)) - pixfmt->pixelformat = supported_pixformats[0]; - - v4l_bound_align_image(&pixfmt->width, MIN_WIDTH, MAX_WIDTH, 1, - &pixfmt->height, MIN_HEIGHT, MAX_WIDTH, 1, 1); - - bpp = sun6i_csi_get_bpp(pixfmt->pixelformat); - pixfmt->bytesperline = (pixfmt->width * bpp) >> 3; - pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height; - - if (pixfmt->field == V4L2_FIELD_ANY) - pixfmt->field = V4L2_FIELD_NONE; - - pixfmt->colorspace = V4L2_COLORSPACE_RAW; - pixfmt->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT; - pixfmt->quantization = V4L2_QUANTIZATION_DEFAULT; - pixfmt->xfer_func = V4L2_XFER_FUNC_DEFAULT; - - return 0; -} - -static int sun6i_video_set_fmt(struct sun6i_video *video, struct v4l2_format *f) -{ - int ret; - - ret = sun6i_video_try_fmt(video, f); - if (ret) - return ret; - - video->fmt = *f; - - return 0; -} - -static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, - struct v4l2_format *f) -{ - struct sun6i_video *video = video_drvdata(file); - - if (vb2_is_busy(&video->vb2_vidq)) - return -EBUSY; - - return sun6i_video_set_fmt(video, f); -} - -static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, - struct v4l2_format *f) -{ - struct sun6i_video *video = video_drvdata(file); - - return sun6i_video_try_fmt(video, f); -} - -static int vidioc_enum_input(struct file *file, void *fh, - struct v4l2_input *inp) -{ - if (inp->index != 0) - return -EINVAL; - - strlcpy(inp->name, "camera", sizeof(inp->name)); - inp->type = V4L2_INPUT_TYPE_CAMERA; - - return 0; -} - -static int vidioc_g_input(struct file *file, void *fh, unsigned int *i) -{ - *i = 0; - - return 0; -} - -static int vidioc_s_input(struct file *file, void *fh, unsigned int i) -{ - if (i != 0) - return -EINVAL; - - return 0; -} - -static const struct v4l2_ioctl_ops sun6i_video_ioctl_ops = { - .vidioc_querycap = vidioc_querycap, - .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, - .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, - .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, - .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, - - .vidioc_enum_input = vidioc_enum_input, - .vidioc_s_input = vidioc_s_input, - .vidioc_g_input = vidioc_g_input, - - .vidioc_reqbufs = vb2_ioctl_reqbufs, - .vidioc_querybuf = vb2_ioctl_querybuf, - .vidioc_qbuf = vb2_ioctl_qbuf, - .vidioc_expbuf = vb2_ioctl_expbuf, - .vidioc_dqbuf = vb2_ioctl_dqbuf, - .vidioc_create_bufs = vb2_ioctl_create_bufs, - .vidioc_prepare_buf = vb2_ioctl_prepare_buf, - .vidioc_streamon = vb2_ioctl_streamon, - .vidioc_streamoff = vb2_ioctl_streamoff, - - .vidioc_log_status = v4l2_ctrl_log_status, - .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, - .vidioc_unsubscribe_event = v4l2_event_unsubscribe, -}; - -/* ----------------------------------------------------------------------------- - * V4L2 file operations - */ -static int sun6i_video_open(struct file *file) -{ - struct sun6i_video *video = video_drvdata(file); - int ret; - - if (mutex_lock_interruptible(&video->lock)) - return -ERESTARTSYS; - - ret = v4l2_fh_open(file); - if (ret < 0) - goto unlock; - - ret = v4l2_pipeline_pm_use(&video->vdev.entity, 1); - if (ret < 0) - goto fh_release; - - /* check if already powered */ - if (!v4l2_fh_is_singular_file(file)) - goto unlock; - - ret = sun6i_csi_set_power(video->csi, true); - if (ret < 0) - goto fh_release; - - mutex_unlock(&video->lock); - return 0; - -fh_release: - v4l2_fh_release(file); -unlock: - mutex_unlock(&video->lock); - return ret; -} - -static int sun6i_video_close(struct file *file) -{ - struct sun6i_video *video = video_drvdata(file); - bool last_fh; - - mutex_lock(&video->lock); - - last_fh = v4l2_fh_is_singular_file(file); - - _vb2_fop_release(file, NULL); - - v4l2_pipeline_pm_use(&video->vdev.entity, 0); - - if (last_fh) - sun6i_csi_set_power(video->csi, false); - - mutex_unlock(&video->lock); - - return 0; -} - -static const struct v4l2_file_operations sun6i_video_fops = { - .owner = THIS_MODULE, - .open = sun6i_video_open, - .release = sun6i_video_close, - .unlocked_ioctl = video_ioctl2, - .mmap = vb2_fop_mmap, - .poll = vb2_fop_poll -}; - -/* ----------------------------------------------------------------------------- - * Media Operations - */ -static int sun6i_video_link_validate_get_format(struct media_pad *pad, - struct v4l2_subdev_format *fmt) -{ - if (is_media_entity_v4l2_subdev(pad->entity)) { - struct v4l2_subdev *sd = - media_entity_to_v4l2_subdev(pad->entity); - - fmt->which = V4L2_SUBDEV_FORMAT_ACTIVE; - fmt->pad = pad->index; - return v4l2_subdev_call(sd, pad, get_fmt, NULL, fmt); - } - - return -EINVAL; -} - -static int sun6i_video_link_validate(struct media_link *link) -{ - struct video_device *vdev = container_of(link->sink->entity, - struct video_device, entity); - struct sun6i_video *video = video_get_drvdata(vdev); - struct v4l2_subdev_format source_fmt; - int ret; - - video->mbus_code = 0; - - if (!media_entity_remote_pad(link->sink->entity->pads)) { - dev_info(video->csi->dev, - "video node %s pad not connected\n", vdev->name); - return -ENOLINK; - } - - ret = sun6i_video_link_validate_get_format(link->source, &source_fmt); - if (ret < 0) - return ret; - - if (!sun6i_csi_is_format_supported(video->csi, - video->fmt.fmt.pix.pixelformat, - source_fmt.format.code)) { - dev_err(video->csi->dev, - "Unsupported pixformat: 0x%x with mbus code: 0x%x!\n", - video->fmt.fmt.pix.pixelformat, - source_fmt.format.code); - return -EPIPE; - } - - if (source_fmt.format.width != video->fmt.fmt.pix.width || - source_fmt.format.height != video->fmt.fmt.pix.height) { - dev_err(video->csi->dev, - "Wrong width or height %ux%u (%ux%u expected)\n", - video->fmt.fmt.pix.width, video->fmt.fmt.pix.height, - source_fmt.format.width, source_fmt.format.height); - return -EPIPE; - } - - video->mbus_code = source_fmt.format.code; - - return 0; -} - -static const struct media_entity_operations sun6i_video_media_ops = { - .link_validate = sun6i_video_link_validate -}; - -int sun6i_video_init(struct sun6i_video *video, struct sun6i_csi *csi, - const char *name) -{ - struct video_device *vdev = &video->vdev; - struct vb2_queue *vidq = &video->vb2_vidq; - struct v4l2_format fmt = { 0 }; - int ret; - - video->csi = csi; - - /* Initialize the media entity... */ - video->pad.flags = MEDIA_PAD_FL_SINK | MEDIA_PAD_FL_MUST_CONNECT; - vdev->entity.ops = &sun6i_video_media_ops; - ret = media_entity_pads_init(&vdev->entity, 1, &video->pad); - if (ret < 0) - return ret; - - mutex_init(&video->lock); - - INIT_LIST_HEAD(&video->dma_queue); - spin_lock_init(&video->dma_queue_lock); - - video->sequence = 0; - - /* Setup default format */ - fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; - fmt.fmt.pix.pixelformat = supported_pixformats[0]; - fmt.fmt.pix.width = 1280; - fmt.fmt.pix.height = 720; - fmt.fmt.pix.field = V4L2_FIELD_NONE; - sun6i_video_set_fmt(video, &fmt); - - /* Initialize videobuf2 queue */ - vidq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; - vidq->io_modes = VB2_MMAP | VB2_DMABUF; - vidq->drv_priv = video; - vidq->buf_struct_size = sizeof(struct sun6i_csi_buffer); - vidq->ops = &sun6i_csi_vb2_ops; - vidq->mem_ops = &vb2_dma_contig_memops; - vidq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; - vidq->lock = &video->lock; - /* Make sure non-dropped frame */ - vidq->min_buffers_needed = 3; - vidq->dev = csi->dev; - - ret = vb2_queue_init(vidq); - if (ret) { - v4l2_err(&csi->v4l2_dev, "vb2_queue_init failed: %d\n", ret); - goto clean_entity; - } - - /* Register video device */ - strlcpy(vdev->name, name, sizeof(vdev->name)); - vdev->release = video_device_release_empty; - vdev->fops = &sun6i_video_fops; - vdev->ioctl_ops = &sun6i_video_ioctl_ops; - vdev->vfl_type = VFL_TYPE_GRABBER; - vdev->vfl_dir = VFL_DIR_RX; - vdev->v4l2_dev = &csi->v4l2_dev; - vdev->queue = vidq; - vdev->lock = &video->lock; - vdev->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_CAPTURE; - video_set_drvdata(vdev, video); - - ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1); - if (ret < 0) { - v4l2_err(&csi->v4l2_dev, - "video_register_device failed: %d\n", ret); - goto release_vb2; - } - - return 0; - -release_vb2: - vb2_queue_release(&video->vb2_vidq); -clean_entity: - media_entity_cleanup(&video->vdev.entity); - mutex_destroy(&video->lock); - return ret; -} - -void sun6i_video_cleanup(struct sun6i_video *video) -{ - video_unregister_device(&video->vdev); - media_entity_cleanup(&video->vdev.entity); - vb2_queue_release(&video->vb2_vidq); - mutex_destroy(&video->lock); -} |