169 lines
4.3 KiB
C
169 lines
4.3 KiB
C
/*
|
|
* Driver for Renesas R-Car VIN
|
|
*
|
|
* Copyright (C) 2016 Renesas Electronics Corp.
|
|
* Copyright (C) 2011-2013 Renesas Solutions Corp.
|
|
* Copyright (C) 2013 Cogent Embedded, Inc., <source@cogentembedded.com>
|
|
* Copyright (C) 2008 Magnus Damm
|
|
*
|
|
* Based on the soc-camera rcar_vin driver
|
|
*
|
|
* 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 __RCAR_VIN__
|
|
#define __RCAR_VIN__
|
|
|
|
#include <media/v4l2-async.h>
|
|
#include <media/v4l2-ctrls.h>
|
|
#include <media/v4l2-dev.h>
|
|
#include <media/v4l2-device.h>
|
|
#include <media/videobuf2-v4l2.h>
|
|
|
|
/* Number of HW buffers */
|
|
#define HW_BUFFER_NUM 3
|
|
|
|
/* Address alignment mask for HW buffers */
|
|
#define HW_BUFFER_MASK 0x7f
|
|
|
|
enum chip_id {
|
|
RCAR_H1,
|
|
RCAR_M1,
|
|
RCAR_GEN2,
|
|
};
|
|
|
|
/**
|
|
* STOPPED - No operation in progress
|
|
* RUNNING - Operation in progress have buffers
|
|
* STALLED - No operation in progress have no buffers
|
|
* STOPPING - Stopping operation
|
|
*/
|
|
enum rvin_dma_state {
|
|
STOPPED = 0,
|
|
RUNNING,
|
|
STALLED,
|
|
STOPPING,
|
|
};
|
|
|
|
/**
|
|
* struct rvin_source_fmt - Source information
|
|
* @width: Width from source
|
|
* @height: Height from source
|
|
*/
|
|
struct rvin_source_fmt {
|
|
u32 width;
|
|
u32 height;
|
|
};
|
|
|
|
/**
|
|
* struct rvin_video_format - Data format stored in memory
|
|
* @fourcc: Pixelformat
|
|
* @bpp: Bytes per pixel
|
|
*/
|
|
struct rvin_video_format {
|
|
u32 fourcc;
|
|
u8 bpp;
|
|
};
|
|
|
|
/**
|
|
* struct rvin_graph_entity - Video endpoint from async framework
|
|
* @asd: sub-device descriptor for async framework
|
|
* @subdev: subdevice matched using async framework
|
|
* @code: Media bus format from source
|
|
* @mbus_cfg: Media bus format from DT
|
|
*/
|
|
struct rvin_graph_entity {
|
|
struct v4l2_async_subdev asd;
|
|
struct v4l2_subdev *subdev;
|
|
|
|
u32 code;
|
|
struct v4l2_mbus_config mbus_cfg;
|
|
};
|
|
|
|
/**
|
|
* struct rvin_dev - Renesas VIN device structure
|
|
* @dev: (OF) device
|
|
* @base: device I/O register space remapped to virtual memory
|
|
* @chip: type of VIN chip
|
|
*
|
|
* @vdev: V4L2 video device associated with VIN
|
|
* @v4l2_dev: V4L2 device
|
|
* @src_pad_idx: source pad index for media controller drivers
|
|
* @sink_pad_idx: sink pad index for media controller drivers
|
|
* @ctrl_handler: V4L2 control handler
|
|
* @notifier: V4L2 asynchronous subdevs notifier
|
|
* @digital: entity in the DT for local digital subdevice
|
|
*
|
|
* @lock: protects @queue
|
|
* @queue: vb2 buffers queue
|
|
*
|
|
* @qlock: protects @queue_buf, @buf_list, @continuous, @sequence
|
|
* @state
|
|
* @queue_buf: Keeps track of buffers given to HW slot
|
|
* @buf_list: list of queued buffers
|
|
* @continuous: tracks if active operation is continuous or single mode
|
|
* @sequence: V4L2 buffers sequence number
|
|
* @state: keeps track of operation state
|
|
*
|
|
* @source: active format from the video source
|
|
* @format: active V4L2 pixel format
|
|
*
|
|
* @crop: active cropping
|
|
* @compose: active composing
|
|
*/
|
|
struct rvin_dev {
|
|
struct device *dev;
|
|
void __iomem *base;
|
|
enum chip_id chip;
|
|
|
|
struct video_device vdev;
|
|
struct v4l2_device v4l2_dev;
|
|
int src_pad_idx;
|
|
int sink_pad_idx;
|
|
struct v4l2_ctrl_handler ctrl_handler;
|
|
struct v4l2_async_notifier notifier;
|
|
struct rvin_graph_entity digital;
|
|
|
|
struct mutex lock;
|
|
struct vb2_queue queue;
|
|
|
|
spinlock_t qlock;
|
|
struct vb2_v4l2_buffer *queue_buf[HW_BUFFER_NUM];
|
|
struct list_head buf_list;
|
|
bool continuous;
|
|
unsigned int sequence;
|
|
enum rvin_dma_state state;
|
|
|
|
struct rvin_source_fmt source;
|
|
struct v4l2_pix_format format;
|
|
|
|
struct v4l2_rect crop;
|
|
struct v4l2_rect compose;
|
|
};
|
|
|
|
#define vin_to_source(vin) vin->digital.subdev
|
|
|
|
/* Debug */
|
|
#define vin_dbg(d, fmt, arg...) dev_dbg(d->dev, fmt, ##arg)
|
|
#define vin_info(d, fmt, arg...) dev_info(d->dev, fmt, ##arg)
|
|
#define vin_warn(d, fmt, arg...) dev_warn(d->dev, fmt, ##arg)
|
|
#define vin_err(d, fmt, arg...) dev_err(d->dev, fmt, ##arg)
|
|
|
|
int rvin_dma_probe(struct rvin_dev *vin, int irq);
|
|
void rvin_dma_remove(struct rvin_dev *vin);
|
|
|
|
int rvin_v4l2_probe(struct rvin_dev *vin);
|
|
void rvin_v4l2_remove(struct rvin_dev *vin);
|
|
|
|
const struct rvin_video_format *rvin_format_from_pixel(u32 pixelformat);
|
|
|
|
/* Cropping, composing and scaling */
|
|
void rvin_scale_try(struct rvin_dev *vin, struct v4l2_pix_format *pix,
|
|
u32 width, u32 height);
|
|
void rvin_crop_scale_comp(struct rvin_dev *vin);
|
|
|
|
#endif
|