diff options
Diffstat (limited to 'drivers/media/platform/vsp1/vsp1_video.h')
| -rw-r--r-- | drivers/media/platform/vsp1/vsp1_video.h | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/drivers/media/platform/vsp1/vsp1_video.h b/drivers/media/platform/vsp1/vsp1_video.h new file mode 100644 index 000000000000..d8612a378345 --- /dev/null +++ b/drivers/media/platform/vsp1/vsp1_video.h @@ -0,0 +1,144 @@ +/* + * vsp1_video.h -- R-Car VSP1 Video Node + * + * Copyright (C) 2013 Renesas Corporation + * + * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ +#ifndef __VSP1_VIDEO_H__ +#define __VSP1_VIDEO_H__ + +#include <linux/list.h> +#include <linux/spinlock.h> +#include <linux/wait.h> + +#include <media/media-entity.h> +#include <media/videobuf2-core.h> + +struct vsp1_video; + +/* + * struct vsp1_format_info - VSP1 video format description + * @mbus: media bus format code + * @fourcc: V4L2 pixel format FCC identifier + * @planes: number of planes + * @bpp: bits per pixel + * @hwfmt: VSP1 hardware format + * @swap_yc: the Y and C components are swapped (Y comes before C) + * @swap_uv: the U and V components are swapped (V comes before U) + * @hsub: horizontal subsampling factor + * @vsub: vertical subsampling factor + */ +struct vsp1_format_info { + u32 fourcc; + unsigned int mbus; + unsigned int hwfmt; + unsigned int swap; + unsigned int planes; + unsigned int bpp[3]; + bool swap_yc; + bool swap_uv; + unsigned int hsub; + unsigned int vsub; +}; + +enum vsp1_pipeline_state { + VSP1_PIPELINE_STOPPED, + VSP1_PIPELINE_RUNNING, + VSP1_PIPELINE_STOPPING, +}; + +/* + * struct vsp1_pipeline - A VSP1 hardware pipeline + * @media: the media pipeline + * @irqlock: protects the pipeline state + * @lock: protects the pipeline use count and stream count + */ +struct vsp1_pipeline { + struct media_pipeline pipe; + + spinlock_t irqlock; + enum vsp1_pipeline_state state; + wait_queue_head_t wq; + + struct mutex lock; + unsigned int use_count; + unsigned int stream_count; + unsigned int buffers_ready; + + unsigned int num_video; + unsigned int num_inputs; + struct vsp1_rwpf *inputs[VPS1_MAX_RPF]; + struct vsp1_rwpf *output; + struct vsp1_entity *lif; + + struct list_head entities; +}; + +static inline struct vsp1_pipeline *to_vsp1_pipeline(struct media_entity *e) +{ + if (likely(e->pipe)) + return container_of(e->pipe, struct vsp1_pipeline, pipe); + else + return NULL; +} + +struct vsp1_video_buffer { + struct vsp1_video *video; + struct vb2_buffer buf; + struct list_head queue; + + dma_addr_t addr[3]; + unsigned int length[3]; +}; + +static inline struct vsp1_video_buffer * +to_vsp1_video_buffer(struct vb2_buffer *vb) +{ + return container_of(vb, struct vsp1_video_buffer, buf); +} + +struct vsp1_video_operations { + void (*queue)(struct vsp1_video *video, struct vsp1_video_buffer *buf); +}; + +struct vsp1_video { + struct vsp1_device *vsp1; + struct vsp1_entity *rwpf; + + const struct vsp1_video_operations *ops; + + struct video_device video; + enum v4l2_buf_type type; + struct media_pad pad; + + struct mutex lock; + struct v4l2_pix_format_mplane format; + const struct vsp1_format_info *fmtinfo; + + struct vsp1_pipeline pipe; + unsigned int pipe_index; + + struct vb2_queue queue; + void *alloc_ctx; + spinlock_t irqlock; + struct list_head irqqueue; + unsigned int sequence; +}; + +static inline struct vsp1_video *to_vsp1_video(struct video_device *vdev) +{ + return container_of(vdev, struct vsp1_video, video); +} + +int vsp1_video_init(struct vsp1_video *video, struct vsp1_entity *rwpf); +void vsp1_video_cleanup(struct vsp1_video *video); + +void vsp1_pipeline_frame_end(struct vsp1_pipeline *pipe); + +#endif /* __VSP1_VIDEO_H__ */ |