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kernel add
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/*
* Samsung S5P G2D - 2D Graphics Accelerator Driver
*
* Copyright (c) 2011 Samsung Electronics Co., Ltd.
* Kamil Debski, <k.debski@samsung.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
*/
#include <linux/platform_device.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ctrls.h>
#define G2D_NAME "s5p-g2d"
#define TYPE_G2D_3X 3
#define TYPE_G2D_4X 4
struct g2d_dev {
struct v4l2_device v4l2_dev;
struct v4l2_m2m_dev *m2m_dev;
struct video_device *vfd;
struct mutex mutex;
spinlock_t ctrl_lock;
atomic_t num_inst;
struct vb2_alloc_ctx *alloc_ctx;
void __iomem *regs;
struct clk *clk;
struct clk *gate;
struct g2d_ctx *curr;
struct g2d_variant *variant;
int irq;
wait_queue_head_t irq_queue;
};
struct g2d_frame {
/* Original dimensions */
u32 width;
u32 height;
/* Crop size */
u32 c_width;
u32 c_height;
/* Offset */
u32 o_width;
u32 o_height;
/* Image format */
struct g2d_fmt *fmt;
/* Variables that can calculated once and reused */
u32 stride;
u32 bottom;
u32 right;
u32 size;
};
struct g2d_ctx {
struct v4l2_fh fh;
struct g2d_dev *dev;
struct g2d_frame in;
struct g2d_frame out;
struct v4l2_ctrl *ctrl_hflip;
struct v4l2_ctrl *ctrl_vflip;
struct v4l2_ctrl_handler ctrl_handler;
u32 rop;
u32 flip;
};
struct g2d_fmt {
char *name;
u32 fourcc;
int depth;
u32 hw;
};
struct g2d_variant {
unsigned short hw_rev;
};
void g2d_reset(struct g2d_dev *d);
void g2d_set_src_size(struct g2d_dev *d, struct g2d_frame *f);
void g2d_set_src_addr(struct g2d_dev *d, dma_addr_t a);
void g2d_set_dst_size(struct g2d_dev *d, struct g2d_frame *f);
void g2d_set_dst_addr(struct g2d_dev *d, dma_addr_t a);
void g2d_start(struct g2d_dev *d);
void g2d_clear_int(struct g2d_dev *d);
void g2d_set_rop4(struct g2d_dev *d, u32 r);
void g2d_set_flip(struct g2d_dev *d, u32 r);
void g2d_set_v41_stretch(struct g2d_dev *d,
struct g2d_frame *src, struct g2d_frame *dst);
void g2d_set_cmd(struct g2d_dev *d, u32 c);
static inline struct g2d_variant *g2d_get_drv_data(struct platform_device *pdev)
{
return (struct g2d_variant *)platform_get_device_id(pdev)->driver_data;
}
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