media: camss: Add files which handle the video device nodes
These files handle the video device nodes of the camss driver. Signed-off-by: Todor Tomov <todor.tomov@linaro.org> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Todor Tomov
Mauro Carvalho Chehab
parent
4c98a5f57f
commit
0ac2586c41
681
drivers/media/platform/qcom/camss-8x16/camss-video.c
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681
drivers/media/platform/qcom/camss-8x16/camss-video.c
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@ -0,0 +1,681 @@
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/*
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* camss-video.c
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*
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* Qualcomm MSM Camera Subsystem - V4L2 device node
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*
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* Copyright (c) 2013-2015, The Linux Foundation. All rights reserved.
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* Copyright (C) 2015-2017 Linaro Ltd.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/slab.h>
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#include <media/media-entity.h>
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#include <media/v4l2-dev.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-ioctl.h>
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#include <media/v4l2-mc.h>
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#include <media/videobuf-core.h>
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#include <media/videobuf2-dma-sg.h>
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#include "camss-video.h"
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#include "camss.h"
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/*
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* struct camss_format_info - ISP media bus format information
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* @code: V4L2 media bus format code
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* @pixelformat: V4L2 pixel format FCC identifier
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* @bpp: Bits per pixel when stored in memory
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*/
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static const struct camss_format_info {
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u32 code;
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u32 pixelformat;
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unsigned int bpp;
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} formats[] = {
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{ MEDIA_BUS_FMT_UYVY8_2X8, V4L2_PIX_FMT_UYVY, 16 },
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{ MEDIA_BUS_FMT_VYUY8_2X8, V4L2_PIX_FMT_VYUY, 16 },
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{ MEDIA_BUS_FMT_YUYV8_2X8, V4L2_PIX_FMT_YUYV, 16 },
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{ MEDIA_BUS_FMT_YVYU8_2X8, V4L2_PIX_FMT_YVYU, 16 },
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{ MEDIA_BUS_FMT_SBGGR8_1X8, V4L2_PIX_FMT_SBGGR8, 8 },
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{ MEDIA_BUS_FMT_SGBRG8_1X8, V4L2_PIX_FMT_SGBRG8, 8 },
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{ MEDIA_BUS_FMT_SGRBG8_1X8, V4L2_PIX_FMT_SGRBG8, 8 },
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{ MEDIA_BUS_FMT_SRGGB8_1X8, V4L2_PIX_FMT_SRGGB8, 8 },
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{ MEDIA_BUS_FMT_SBGGR10_1X10, V4L2_PIX_FMT_SBGGR10P, 10 },
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{ MEDIA_BUS_FMT_SGBRG10_1X10, V4L2_PIX_FMT_SGBRG10P, 10 },
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{ MEDIA_BUS_FMT_SGRBG10_1X10, V4L2_PIX_FMT_SGRBG10P, 10 },
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{ MEDIA_BUS_FMT_SRGGB10_1X10, V4L2_PIX_FMT_SRGGB10P, 10 },
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{ MEDIA_BUS_FMT_SBGGR12_1X12, V4L2_PIX_FMT_SBGGR12P, 12 },
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{ MEDIA_BUS_FMT_SGBRG12_1X12, V4L2_PIX_FMT_SGBRG12P, 12 },
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{ MEDIA_BUS_FMT_SGRBG12_1X12, V4L2_PIX_FMT_SGRBG12P, 12 },
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{ MEDIA_BUS_FMT_SRGGB12_1X12, V4L2_PIX_FMT_SRGGB12P, 12 }
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};
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/* -----------------------------------------------------------------------------
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* Helper functions
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*/
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/*
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* video_mbus_to_pix_mp - Convert v4l2_mbus_framefmt to v4l2_pix_format_mplane
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* @mbus: v4l2_mbus_framefmt format (input)
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* @pix: v4l2_pix_format_mplane format (output)
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*
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* Fill the output pix structure with information from the input mbus format.
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*
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* Return 0 on success or a negative error code otherwise
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*/
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static unsigned int video_mbus_to_pix_mp(const struct v4l2_mbus_framefmt *mbus,
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struct v4l2_pix_format_mplane *pix)
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{
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unsigned int i;
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u32 bytesperline;
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memset(pix, 0, sizeof(*pix));
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v4l2_fill_pix_format_mplane(pix, mbus);
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for (i = 0; i < ARRAY_SIZE(formats); ++i) {
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if (formats[i].code == mbus->code)
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break;
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}
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if (WARN_ON(i == ARRAY_SIZE(formats)))
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return -EINVAL;
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pix->pixelformat = formats[i].pixelformat;
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pix->num_planes = 1;
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bytesperline = pix->width * formats[i].bpp / 8;
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bytesperline = ALIGN(bytesperline, 8);
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pix->plane_fmt[0].bytesperline = bytesperline;
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pix->plane_fmt[0].sizeimage = bytesperline * pix->height;
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return 0;
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}
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static struct v4l2_subdev *video_remote_subdev(struct camss_video *video,
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u32 *pad)
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{
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struct media_pad *remote;
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remote = media_entity_remote_pad(&video->pad);
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if (!remote || !is_media_entity_v4l2_subdev(remote->entity))
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return NULL;
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if (pad)
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*pad = remote->index;
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return media_entity_to_v4l2_subdev(remote->entity);
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}
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static int video_get_subdev_format(struct camss_video *video,
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struct v4l2_format *format)
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{
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struct v4l2_subdev_format fmt;
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struct v4l2_subdev *subdev;
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u32 pad;
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int ret;
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subdev = video_remote_subdev(video, &pad);
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if (subdev == NULL)
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return -EPIPE;
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fmt.pad = pad;
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fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
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ret = v4l2_subdev_call(subdev, pad, get_fmt, NULL, &fmt);
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if (ret)
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return ret;
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format->type = video->type;
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return video_mbus_to_pix_mp(&fmt.format, &format->fmt.pix_mp);
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}
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/* -----------------------------------------------------------------------------
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* Video queue operations
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*/
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static int video_queue_setup(struct vb2_queue *q,
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unsigned int *num_buffers, unsigned int *num_planes,
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unsigned int sizes[], struct device *alloc_devs[])
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{
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struct camss_video *video = vb2_get_drv_priv(q);
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if (*num_planes) {
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if (*num_planes != 1)
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return -EINVAL;
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if (sizes[0] < video->active_fmt.fmt.pix_mp.plane_fmt[0].sizeimage)
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return -EINVAL;
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return 0;
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}
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*num_planes = 1;
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sizes[0] = video->active_fmt.fmt.pix_mp.plane_fmt[0].sizeimage;
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return 0;
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}
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static int video_buf_prepare(struct vb2_buffer *vb)
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{
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struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
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struct camss_video *video = vb2_get_drv_priv(vb->vb2_queue);
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struct camss_buffer *buffer = container_of(vbuf, struct camss_buffer,
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vb);
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struct sg_table *sgt;
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if (video->active_fmt.fmt.pix_mp.plane_fmt[0].sizeimage >
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vb2_plane_size(vb, 0))
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return -EINVAL;
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vb2_set_plane_payload(vb, 0,
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video->active_fmt.fmt.pix_mp.plane_fmt[0].sizeimage);
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sgt = vb2_dma_sg_plane_desc(vb, 0);
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if (!sgt)
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return -EFAULT;
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buffer->addr = sg_dma_address(sgt->sgl);
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vbuf->field = V4L2_FIELD_NONE;
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return 0;
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}
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static void video_buf_queue(struct vb2_buffer *vb)
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{
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struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
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struct camss_video *video = vb2_get_drv_priv(vb->vb2_queue);
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struct camss_buffer *buffer = container_of(vbuf, struct camss_buffer,
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vb);
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video->ops->queue_buffer(video, buffer);
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}
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static int video_check_format(struct camss_video *video)
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{
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struct v4l2_pix_format_mplane *pix = &video->active_fmt.fmt.pix_mp;
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struct v4l2_format format;
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struct v4l2_pix_format_mplane *sd_pix = &format.fmt.pix_mp;
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int ret;
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ret = video_get_subdev_format(video, &format);
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if (ret < 0)
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return ret;
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if (pix->pixelformat != sd_pix->pixelformat ||
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pix->height != sd_pix->height ||
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pix->width != sd_pix->width ||
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pix->num_planes != sd_pix->num_planes ||
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pix->num_planes != 1 ||
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pix->plane_fmt[0].bytesperline != sd_pix->plane_fmt[0].bytesperline ||
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pix->plane_fmt[0].sizeimage != sd_pix->plane_fmt[0].sizeimage ||
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pix->field != format.fmt.pix_mp.field)
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return -EPIPE;
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return 0;
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}
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static int video_start_streaming(struct vb2_queue *q, unsigned int count)
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{
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struct camss_video *video = vb2_get_drv_priv(q);
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struct video_device *vdev = &video->vdev;
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struct media_entity *entity;
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struct media_pad *pad;
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struct v4l2_subdev *subdev;
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int ret;
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ret = media_pipeline_start(&vdev->entity, &video->pipe);
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if (ret < 0)
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return ret;
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ret = video_check_format(video);
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if (ret < 0)
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goto error;
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entity = &vdev->entity;
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while (1) {
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pad = &entity->pads[0];
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if (!(pad->flags & MEDIA_PAD_FL_SINK))
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break;
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pad = media_entity_remote_pad(pad);
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if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
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break;
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entity = pad->entity;
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subdev = media_entity_to_v4l2_subdev(entity);
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ret = v4l2_subdev_call(subdev, video, s_stream, 1);
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if (ret < 0 && ret != -ENOIOCTLCMD)
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goto error;
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}
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return 0;
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error:
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media_pipeline_stop(&vdev->entity);
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video->ops->flush_buffers(video, VB2_BUF_STATE_QUEUED);
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return ret;
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}
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static void video_stop_streaming(struct vb2_queue *q)
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{
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struct camss_video *video = vb2_get_drv_priv(q);
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struct video_device *vdev = &video->vdev;
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struct media_entity *entity;
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struct media_pad *pad;
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struct v4l2_subdev *subdev;
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struct v4l2_subdev *subdev_vfe = NULL;
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entity = &vdev->entity;
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while (1) {
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pad = &entity->pads[0];
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if (!(pad->flags & MEDIA_PAD_FL_SINK))
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break;
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pad = media_entity_remote_pad(pad);
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if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
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break;
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entity = pad->entity;
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subdev = media_entity_to_v4l2_subdev(entity);
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if (strstr(subdev->name, "vfe")) {
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subdev_vfe = subdev;
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} else if (strstr(subdev->name, "ispif")) {
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v4l2_subdev_call(subdev, video, s_stream, 0);
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v4l2_subdev_call(subdev_vfe, video, s_stream, 0);
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} else {
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v4l2_subdev_call(subdev, video, s_stream, 0);
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}
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}
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media_pipeline_stop(&vdev->entity);
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video->ops->flush_buffers(video, VB2_BUF_STATE_ERROR);
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}
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static const struct vb2_ops msm_video_vb2_q_ops = {
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.queue_setup = video_queue_setup,
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.wait_prepare = vb2_ops_wait_prepare,
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.wait_finish = vb2_ops_wait_finish,
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.buf_prepare = video_buf_prepare,
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.buf_queue = video_buf_queue,
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.start_streaming = video_start_streaming,
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.stop_streaming = video_stop_streaming,
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};
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/* -----------------------------------------------------------------------------
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* V4L2 ioctls
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*/
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static int video_querycap(struct file *file, void *fh,
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struct v4l2_capability *cap)
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{
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struct camss_video *video = video_drvdata(file);
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strlcpy(cap->driver, "qcom-camss", sizeof(cap->driver));
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strlcpy(cap->card, "Qualcomm Camera Subsystem", sizeof(cap->card));
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snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
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dev_name(video->camss->dev));
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return 0;
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}
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static int video_enum_fmt(struct file *file, void *fh, struct v4l2_fmtdesc *f)
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{
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struct camss_video *video = video_drvdata(file);
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if (f->type != video->type)
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return -EINVAL;
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if (f->index >= ARRAY_SIZE(formats))
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return -EINVAL;
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f->pixelformat = formats[f->index].pixelformat;
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return 0;
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}
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static int video_g_fmt(struct file *file, void *fh, struct v4l2_format *f)
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{
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struct camss_video *video = video_drvdata(file);
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*f = video->active_fmt;
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return 0;
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}
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static int __video_try_fmt(struct camss_video *video, struct v4l2_format *f)
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{
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struct v4l2_pix_format_mplane *pix_mp;
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u32 width, height;
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u32 bpl;
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int j;
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pix_mp = &f->fmt.pix_mp;
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for (j = 0; j < ARRAY_SIZE(formats); j++)
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if (pix_mp->pixelformat == formats[j].pixelformat)
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break;
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if (j == ARRAY_SIZE(formats))
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j = 0; /* default format */
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width = pix_mp->width;
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height = pix_mp->height;
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memset(pix_mp, 0, sizeof(*pix_mp));
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pix_mp->pixelformat = formats[j].pixelformat;
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pix_mp->width = clamp_t(u32, width, 1, 8191);
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pix_mp->height = clamp_t(u32, height, 1, 8191);
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pix_mp->num_planes = 1;
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bpl = pix_mp->width * formats[j].bpp / 8;
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bpl = ALIGN(bpl, 8);
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pix_mp->plane_fmt[0].bytesperline = bpl;
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pix_mp->plane_fmt[0].sizeimage = bpl * pix_mp->height;
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pix_mp->field = V4L2_FIELD_NONE;
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pix_mp->colorspace = V4L2_COLORSPACE_SRGB;
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pix_mp->flags = 0;
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pix_mp->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(pix_mp->colorspace);
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pix_mp->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true,
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pix_mp->colorspace, pix_mp->ycbcr_enc);
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pix_mp->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(pix_mp->colorspace);
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return 0;
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}
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static int video_try_fmt(struct file *file, void *fh, struct v4l2_format *f)
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{
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struct camss_video *video = video_drvdata(file);
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return __video_try_fmt(video, f);
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}
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static int video_s_fmt(struct file *file, void *fh, struct v4l2_format *f)
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{
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struct camss_video *video = video_drvdata(file);
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int ret;
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if (vb2_is_busy(&video->vb2_q))
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return -EBUSY;
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ret = __video_try_fmt(video, f);
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if (ret < 0)
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return ret;
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video->active_fmt = *f;
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return 0;
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}
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static int video_enum_input(struct file *file, void *fh,
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struct v4l2_input *input)
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{
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if (input->index > 0)
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return -EINVAL;
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strlcpy(input->name, "camera", sizeof(input->name));
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input->type = V4L2_INPUT_TYPE_CAMERA;
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return 0;
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}
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static int video_g_input(struct file *file, void *fh, unsigned int *input)
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{
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*input = 0;
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return 0;
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}
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static int video_s_input(struct file *file, void *fh, unsigned int input)
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{
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return input == 0 ? 0 : -EINVAL;
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}
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|
||||
static const struct v4l2_ioctl_ops msm_vid_ioctl_ops = {
|
||||
.vidioc_querycap = video_querycap,
|
||||
.vidioc_enum_fmt_vid_cap_mplane = video_enum_fmt,
|
||||
.vidioc_g_fmt_vid_cap_mplane = video_g_fmt,
|
||||
.vidioc_s_fmt_vid_cap_mplane = video_s_fmt,
|
||||
.vidioc_try_fmt_vid_cap_mplane = video_try_fmt,
|
||||
.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_enum_input = video_enum_input,
|
||||
.vidioc_g_input = video_g_input,
|
||||
.vidioc_s_input = video_s_input,
|
||||
};
|
||||
|
||||
/* -----------------------------------------------------------------------------
|
||||
* V4L2 file operations
|
||||
*/
|
||||
|
||||
static int video_open(struct file *file)
|
||||
{
|
||||
struct video_device *vdev = video_devdata(file);
|
||||
struct camss_video *video = video_drvdata(file);
|
||||
struct v4l2_fh *vfh;
|
||||
int ret;
|
||||
|
||||
mutex_lock(&video->lock);
|
||||
|
||||
vfh = kzalloc(sizeof(*vfh), GFP_KERNEL);
|
||||
if (vfh == NULL) {
|
||||
ret = -ENOMEM;
|
||||
goto error_alloc;
|
||||
}
|
||||
|
||||
v4l2_fh_init(vfh, vdev);
|
||||
v4l2_fh_add(vfh);
|
||||
|
||||
file->private_data = vfh;
|
||||
|
||||
ret = v4l2_pipeline_pm_use(&vdev->entity, 1);
|
||||
if (ret < 0) {
|
||||
dev_err(video->camss->dev, "Failed to power up pipeline: %d\n",
|
||||
ret);
|
||||
goto error_pm_use;
|
||||
}
|
||||
|
||||
mutex_unlock(&video->lock);
|
||||
|
||||
return 0;
|
||||
|
||||
error_pm_use:
|
||||
v4l2_fh_release(file);
|
||||
|
||||
error_alloc:
|
||||
mutex_unlock(&video->lock);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int video_release(struct file *file)
|
||||
{
|
||||
struct video_device *vdev = video_devdata(file);
|
||||
|
||||
vb2_fop_release(file);
|
||||
|
||||
v4l2_pipeline_pm_use(&vdev->entity, 0);
|
||||
|
||||
file->private_data = NULL;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct v4l2_file_operations msm_vid_fops = {
|
||||
.owner = THIS_MODULE,
|
||||
.unlocked_ioctl = video_ioctl2,
|
||||
.open = video_open,
|
||||
.release = video_release,
|
||||
.poll = vb2_fop_poll,
|
||||
.mmap = vb2_fop_mmap,
|
||||
.read = vb2_fop_read,
|
||||
};
|
||||
|
||||
/* -----------------------------------------------------------------------------
|
||||
* CAMSS video core
|
||||
*/
|
||||
|
||||
static void msm_video_release(struct video_device *vdev)
|
||||
{
|
||||
struct camss_video *video = video_get_drvdata(vdev);
|
||||
|
||||
media_entity_cleanup(&vdev->entity);
|
||||
|
||||
mutex_destroy(&video->q_lock);
|
||||
mutex_destroy(&video->lock);
|
||||
|
||||
if (atomic_dec_and_test(&video->camss->ref_count))
|
||||
camss_delete(video->camss);
|
||||
}
|
||||
|
||||
/*
|
||||
* msm_video_init_format - Helper function to initialize format
|
||||
* @video: struct camss_video
|
||||
*
|
||||
* Initialize pad format with default value.
|
||||
*
|
||||
* Return 0 on success or a negative error code otherwise
|
||||
*/
|
||||
static int msm_video_init_format(struct camss_video *video)
|
||||
{
|
||||
int ret;
|
||||
struct v4l2_format format = {
|
||||
.type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE,
|
||||
.fmt.pix_mp = {
|
||||
.width = 1920,
|
||||
.height = 1080,
|
||||
.pixelformat = formats[0].pixelformat,
|
||||
},
|
||||
};
|
||||
|
||||
ret = __video_try_fmt(video, &format);
|
||||
if (ret < 0)
|
||||
return ret;
|
||||
|
||||
video->active_fmt = format;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* msm_video_register - Register a video device node
|
||||
* @video: struct camss_video
|
||||
* @v4l2_dev: V4L2 device
|
||||
* @name: name to be used for the video device node
|
||||
*
|
||||
* Initialize and register a video device node to a V4L2 device. Also
|
||||
* initialize the vb2 queue.
|
||||
*
|
||||
* Return 0 on success or a negative error code otherwise
|
||||
*/
|
||||
|
||||
int msm_video_register(struct camss_video *video, struct v4l2_device *v4l2_dev,
|
||||
const char *name)
|
||||
{
|
||||
struct media_pad *pad = &video->pad;
|
||||
struct video_device *vdev;
|
||||
struct vb2_queue *q;
|
||||
int ret;
|
||||
|
||||
vdev = &video->vdev;
|
||||
|
||||
mutex_init(&video->q_lock);
|
||||
|
||||
q = &video->vb2_q;
|
||||
q->drv_priv = video;
|
||||
q->mem_ops = &vb2_dma_sg_memops;
|
||||
q->ops = &msm_video_vb2_q_ops;
|
||||
q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
|
||||
q->io_modes = VB2_DMABUF | VB2_MMAP | VB2_READ;
|
||||
q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
|
||||
q->buf_struct_size = sizeof(struct camss_buffer);
|
||||
q->dev = video->camss->dev;
|
||||
q->lock = &video->q_lock;
|
||||
ret = vb2_queue_init(q);
|
||||
if (ret < 0) {
|
||||
dev_err(v4l2_dev->dev, "Failed to init vb2 queue: %d\n", ret);
|
||||
goto error_vb2_init;
|
||||
}
|
||||
|
||||
pad->flags = MEDIA_PAD_FL_SINK;
|
||||
ret = media_entity_pads_init(&vdev->entity, 1, pad);
|
||||
if (ret < 0) {
|
||||
dev_err(v4l2_dev->dev, "Failed to init video entity: %d\n",
|
||||
ret);
|
||||
goto error_media_init;
|
||||
}
|
||||
|
||||
mutex_init(&video->lock);
|
||||
|
||||
ret = msm_video_init_format(video);
|
||||
if (ret < 0) {
|
||||
dev_err(v4l2_dev->dev, "Failed to init format: %d\n", ret);
|
||||
goto error_video_register;
|
||||
}
|
||||
|
||||
vdev->fops = &msm_vid_fops;
|
||||
vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE | V4L2_CAP_STREAMING |
|
||||
V4L2_CAP_READWRITE;
|
||||
vdev->ioctl_ops = &msm_vid_ioctl_ops;
|
||||
vdev->release = msm_video_release;
|
||||
vdev->v4l2_dev = v4l2_dev;
|
||||
vdev->vfl_dir = VFL_DIR_RX;
|
||||
vdev->queue = &video->vb2_q;
|
||||
vdev->lock = &video->lock;
|
||||
strlcpy(vdev->name, name, sizeof(vdev->name));
|
||||
|
||||
ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1);
|
||||
if (ret < 0) {
|
||||
dev_err(v4l2_dev->dev, "Failed to register video device: %d\n",
|
||||
ret);
|
||||
goto error_video_register;
|
||||
}
|
||||
|
||||
video_set_drvdata(vdev, video);
|
||||
atomic_inc(&video->camss->ref_count);
|
||||
|
||||
return 0;
|
||||
|
||||
error_video_register:
|
||||
media_entity_cleanup(&vdev->entity);
|
||||
mutex_destroy(&video->lock);
|
||||
error_media_init:
|
||||
vb2_queue_release(&video->vb2_q);
|
||||
error_vb2_init:
|
||||
mutex_destroy(&video->q_lock);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
void msm_video_stop_streaming(struct camss_video *video)
|
||||
{
|
||||
if (vb2_is_streaming(&video->vb2_q))
|
||||
vb2_queue_release(&video->vb2_q);
|
||||
}
|
||||
|
||||
void msm_video_unregister(struct camss_video *video)
|
||||
{
|
||||
atomic_inc(&video->camss->ref_count);
|
||||
video_unregister_device(&video->vdev);
|
||||
atomic_dec(&video->camss->ref_count);
|
||||
}
|
||||
64
drivers/media/platform/qcom/camss-8x16/camss-video.h
Normal file
64
drivers/media/platform/qcom/camss-8x16/camss-video.h
Normal file
@ -0,0 +1,64 @@
|
||||
/*
|
||||
* camss-video.h
|
||||
*
|
||||
* Qualcomm MSM Camera Subsystem - V4L2 device node
|
||||
*
|
||||
* Copyright (c) 2013-2015, The Linux Foundation. All rights reserved.
|
||||
* Copyright (C) 2015-2017 Linaro Ltd.
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License version 2 and
|
||||
* only version 2 as published by the Free Software Foundation.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*/
|
||||
#ifndef QC_MSM_CAMSS_VIDEO_H
|
||||
#define QC_MSM_CAMSS_VIDEO_H
|
||||
|
||||
#include <linux/mutex.h>
|
||||
#include <linux/videodev2.h>
|
||||
#include <media/media-entity.h>
|
||||
#include <media/v4l2-dev.h>
|
||||
#include <media/v4l2-device.h>
|
||||
#include <media/v4l2-fh.h>
|
||||
#include <media/v4l2-mediabus.h>
|
||||
#include <media/videobuf2-v4l2.h>
|
||||
|
||||
struct camss_buffer {
|
||||
struct vb2_v4l2_buffer vb;
|
||||
dma_addr_t addr;
|
||||
struct list_head queue;
|
||||
};
|
||||
|
||||
struct camss_video;
|
||||
|
||||
struct camss_video_ops {
|
||||
int (*queue_buffer)(struct camss_video *vid, struct camss_buffer *buf);
|
||||
int (*flush_buffers)(struct camss_video *vid,
|
||||
enum vb2_buffer_state state);
|
||||
};
|
||||
|
||||
struct camss_video {
|
||||
struct camss *camss;
|
||||
struct vb2_queue vb2_q;
|
||||
struct video_device vdev;
|
||||
struct media_pad pad;
|
||||
struct v4l2_format active_fmt;
|
||||
enum v4l2_buf_type type;
|
||||
struct media_pipeline pipe;
|
||||
const struct camss_video_ops *ops;
|
||||
struct mutex lock;
|
||||
struct mutex q_lock;
|
||||
};
|
||||
|
||||
void msm_video_stop_streaming(struct camss_video *video);
|
||||
|
||||
int msm_video_register(struct camss_video *video, struct v4l2_device *v4l2_dev,
|
||||
const char *name);
|
||||
|
||||
void msm_video_unregister(struct camss_video *video);
|
||||
|
||||
#endif /* QC_MSM_CAMSS_VIDEO_H */
|
||||
Loading…
Reference in New Issue
Block a user