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/*
* Samsung EXYNOS4x12 FIMC-IS (Imaging Subsystem) driver
*
* Copyright (C) 2013 Samsung Electronics Co., Ltd.
*
* Authors: Sylwester Nawrocki <s.nawrocki@samsung.com>
* Younghwan Joo <yhwan.joo@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.
*/
#ifndef FIMC_ISP_H_
#define FIMC_ISP_H_
#include <linux/io.h>
#include <linux/platform_device.h>
#include <linux/sched.h>
#include <linux/spinlock.h>
#include <linux/types.h>
#include <linux/videodev2.h>
#include <media/media-entity.h>
#include <media/videobuf2-core.h>
#include <media/v4l2-device.h>
#include <media/v4l2-mediabus.h>
#include <media/exynos-fimc.h>
extern int fimc_isp_debug;
#define isp_dbg(level, dev, fmt, arg...) \
v4l2_dbg(level, fimc_isp_debug, dev, fmt, ## arg)
/* FIXME: revisit these constraints */
#define FIMC_ISP_SINK_WIDTH_MIN (16 + 8)
#define FIMC_ISP_SINK_HEIGHT_MIN (12 + 8)
#define FIMC_ISP_SOURCE_WIDTH_MIN 8
#define FIMC_ISP_SOURCE_HEIGHT_MIN 8
#define FIMC_ISP_CAC_MARGIN_WIDTH 16
#define FIMC_ISP_CAC_MARGIN_HEIGHT 12
#define FIMC_ISP_SINK_WIDTH_MAX (4000 - 16)
#define FIMC_ISP_SINK_HEIGHT_MAX (4000 + 12)
#define FIMC_ISP_SOURCE_WIDTH_MAX 4000
#define FIMC_ISP_SOURCE_HEIGHT_MAX 4000
#define FIMC_ISP_NUM_FORMATS 3
#define FIMC_ISP_REQ_BUFS_MIN 2
#define FIMC_ISP_REQ_BUFS_MAX 32
#define FIMC_ISP_SD_PAD_SINK 0
#define FIMC_ISP_SD_PAD_SRC_FIFO 1
#define FIMC_ISP_SD_PAD_SRC_DMA 2
#define FIMC_ISP_SD_PADS_NUM 3
#define FIMC_ISP_MAX_PLANES 1
/**
* struct fimc_isp_frame - source/target frame properties
* @width: full image width
* @height: full image height
* @rect: crop/composition rectangle
*/
struct fimc_isp_frame {
u16 width;
u16 height;
struct v4l2_rect rect;
};
struct fimc_isp_ctrls {
struct v4l2_ctrl_handler handler;
/* Auto white balance */
struct v4l2_ctrl *auto_wb;
/* Auto ISO control cluster */
struct {
struct v4l2_ctrl *auto_iso;
struct v4l2_ctrl *iso;
};
/* Adjust - contrast */
struct v4l2_ctrl *contrast;
/* Adjust - saturation */
struct v4l2_ctrl *saturation;
/* Adjust - sharpness */
struct v4l2_ctrl *sharpness;
/* Adjust - brightness */
struct v4l2_ctrl *brightness;
/* Adjust - hue */
struct v4l2_ctrl *hue;
/* Auto/manual exposure */
struct v4l2_ctrl *auto_exp;
/* Manual exposure value */
struct v4l2_ctrl *exposure;
/* AE/AWB lock/unlock */
struct v4l2_ctrl *aewb_lock;
/* Exposure metering mode */
struct v4l2_ctrl *exp_metering;
/* AFC */
struct v4l2_ctrl *afc;
/* ISP image effect */
struct v4l2_ctrl *colorfx;
};
struct isp_video_buf {
struct vb2_buffer vb;
dma_addr_t dma_addr[FIMC_ISP_MAX_PLANES];
unsigned int index;
};
#define to_isp_video_buf(_b) container_of(_b, struct isp_video_buf, vb)
#define FIMC_ISP_MAX_BUFS 4
/**
* struct fimc_is_video - fimc-is video device structure
* @vdev: video_device structure
* @type: video device type (CAPTURE/OUTPUT)
* @pad: video device media (sink) pad
* @pending_buf_q: pending buffers queue head
* @active_buf_q: a queue head of buffers scheduled in hardware
* @vb_queue: vb2 buffer queue
* @active_buf_count: number of video buffers scheduled in hardware
* @frame_count: counter of frames dequeued to user space
* @reqbufs_count: number of buffers requested with REQBUFS ioctl
* @format: current pixel format
*/
struct fimc_is_video {
struct exynos_video_entity ve;
enum v4l2_buf_type type;
struct media_pad pad;
struct list_head pending_buf_q;
struct list_head active_buf_q;
struct vb2_queue vb_queue;
unsigned int reqbufs_count;
unsigned int buf_count;
unsigned int buf_mask;
unsigned int frame_count;
int streaming;
struct isp_video_buf *buffers[FIMC_ISP_MAX_BUFS];
const struct fimc_fmt *format;
struct v4l2_pix_format_mplane pixfmt;
};
/* struct fimc_isp:state bit definitions */
#define ST_ISP_VID_CAP_BUF_PREP 0
#define ST_ISP_VID_CAP_STREAMING 1
/**
* struct fimc_isp - FIMC-IS ISP data structure
* @pdev: pointer to FIMC-IS platform device
* @alloc_ctx: videobuf2 memory allocator context
* @subdev: ISP v4l2_subdev
* @subdev_pads: the ISP subdev media pads
* @test_pattern: test pattern controls
* @ctrls: v4l2 controls structure
* @video_lock: mutex serializing video device and the subdev operations
* @cac_margin_x: horizontal CAC margin in pixels
* @cac_margin_y: vertical CAC margin in pixels
* @state: driver state flags
* @video_capture: the ISP block video capture device
*/
struct fimc_isp {
struct platform_device *pdev;
struct vb2_alloc_ctx *alloc_ctx;
struct v4l2_subdev subdev;
struct media_pad subdev_pads[FIMC_ISP_SD_PADS_NUM];
struct v4l2_mbus_framefmt src_fmt;
struct v4l2_mbus_framefmt sink_fmt;
struct v4l2_ctrl *test_pattern;
struct fimc_isp_ctrls ctrls;
struct mutex video_lock;
struct mutex subdev_lock;
unsigned int cac_margin_x;
unsigned int cac_margin_y;
unsigned long state;
struct fimc_is_video video_capture;
};
#define ctrl_to_fimc_isp(_ctrl) \
container_of(ctrl->handler, struct fimc_isp, ctrls.handler)
struct fimc_is;
int fimc_isp_subdev_create(struct fimc_isp *isp);
void fimc_isp_subdev_destroy(struct fimc_isp *isp);
void fimc_isp_irq_handler(struct fimc_is *is);
int fimc_is_create_controls(struct fimc_isp *isp);
int fimc_is_delete_controls(struct fimc_isp *isp);
const struct fimc_fmt *fimc_isp_find_format(const u32 *pixelformat,
const u32 *mbus_code, int index);
#endif /* FIMC_ISP_H_ */
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