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/*
* Samsung EXYNOS4x12 FIMC-IS (Imaging Subsystem) driver
*
* Copyright (C) 2013 Samsung Electronics Co., Ltd.
* Arun Kumar K <arun.kk@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_IS_SCALER_H_
#define FIMC_IS_SCALER_H_
#include <linux/sizes.h>
#include <linux/io.h>
#include <linux/irqreturn.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/s5p_fimc.h>
#include "fimc-is-core.h"
#define SCALER_SD_PAD_SINK 0
#define SCALER_SD_PAD_SRC_FIFO 1
#define SCALER_SD_PAD_SRC_DMA 2
#define SCALER_SD_PADS_NUM 3
#define SCALER_MAX_BUFS 32
#define SCALER_MAX_PLANES 3
#define FIMC_IS_SCALER_REQ_BUFS_MIN 2
#define SCALER_DEF_WIDTH 1280
#define SCALER_DEF_HEIGHT 720
#define SCALER_MAX_WIDTH 4808
#define SCALER_MAX_HEIGHT 3356
#define SCALER_MIN_WIDTH 32
#define SCALER_MIN_HEIGHT 32
#define SCALER_ROTATE (1 << 2)
#define SCALER_FLIP_X (1 << 0)
#define SCALER_FLIP_Y (1 << 1)
struct fimc_is_scaler_ctrl {
struct v4l2_ctrl_handler handler;
unsigned int rotation;
unsigned int color_mode;
unsigned int status;
};
/**
* struct fimc_is_scaler - fimc-is scaler structure
* @vfd: video device node
* @fh: v4l2 file handle
* @alloc_ctx: videobuf2 memory allocator context
* @subdev: fimc-is-scaler subdev
* @vd_pad: media pad for the output video node
* @subdev_pads: the subdev media pads
* @ctrl_handler: v4l2 control handler
* @video_lock: video lock mutex
* @lock: internal locking
* @event_q: notifies scaler events
* @pipeline: pipeline instance for this scaler context
* @scaler_id: distinguishes scaler preview or scaler codec
* @vbq: vb2 buffers queue for ISP output video node
* @wait_queue: list holding buffers waiting to be queued to HW
* @wait_queue_cnt: wait queue number of buffers
* @run_queue: list holding buffers queued to HW
* @run_queue_cnt: run queue number of buffers
* @capture_bufs: scaler capture buffers array
* @fmt: capture plane format for scaler
* @width: user configured output width
* @height: user configured output height
* @capture_state: state of the capture video node operations
*/
struct fimc_is_scaler {
struct video_device vfd;
struct v4l2_fh fh;
struct vb2_alloc_ctx *alloc_ctx;
struct v4l2_subdev subdev;
struct media_pad vd_pad;
struct media_pad subdev_pads[SCALER_SD_PADS_NUM];
struct v4l2_mbus_framefmt subdev_fmt;
struct fimc_is_scaler_ctrl ctrls;
struct mutex video_lock;
struct mutex lock;
wait_queue_head_t event_q;
struct fimc_is_pipeline *pipeline;
enum fimc_is_scaler_id scaler_id;
struct vb2_queue vbq;
struct list_head wait_queue;
unsigned int wait_queue_cnt;
struct list_head run_queue;
unsigned int run_queue_cnt;
const struct fimc_is_fmt *fmt;
unsigned int width;
unsigned int height;
unsigned long capture_state;
};
int fimc_is_scaler_subdev_create(struct fimc_is_scaler *ctx,
enum fimc_is_scaler_id scaler_id,
struct vb2_alloc_ctx *alloc_ctx,
struct fimc_is_pipeline *pipeline);
void fimc_is_scaler_subdev_destroy(struct fimc_is_scaler *scaler);
#endif /* FIMC_IS_SCALER_H_ */
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