drivers/media/platform/s5p-jpeg/jpeg-core.h - linux - Git at Google

 /* linux/drivers/media/platform/s5p-jpeg/jpeg-core.h
  *
  * Copyright (c) 2011 Samsung Electronics Co., Ltd.
  *		http://www.samsung.com
  *
  * Author: Andrzej Pietrasiewicz <andrzej.p@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 JPEG_CORE_H_
 #define JPEG_CORE_H_

 #include <linux/interrupt.h>
 #include <media/v4l2-device.h>
 #include <media/v4l2-fh.h>
 #include <media/v4l2-ctrls.h>

 #define S5P_JPEG_M2M_NAME		"s5p-jpeg"

 /* JPEG compression quality setting */
 #define S5P_JPEG_COMPR_QUAL_BEST	0
 #define S5P_JPEG_COMPR_QUAL_WORST	3

 /* JPEG RGB to YCbCr conversion matrix coefficients */
 #define S5P_JPEG_COEF11			0x4d
 #define S5P_JPEG_COEF12			0x97
 #define S5P_JPEG_COEF13			0x1e
 #define S5P_JPEG_COEF21			0x2c
 #define S5P_JPEG_COEF22			0x57
 #define S5P_JPEG_COEF23			0x83
 #define S5P_JPEG_COEF31			0x83
 #define S5P_JPEG_COEF32			0x6e
 #define S5P_JPEG_COEF33			0x13

 #define EXYNOS3250_IRQ_TIMEOUT		0x10000000

 /* a selection of JPEG markers */
 #define TEM				0x01
 #define SOF0				0xc0
 #define RST				0xd0
 #define SOI				0xd8
 #define EOI				0xd9
 #define DHP				0xde

 /* Flags that indicate a format can be used for capture/output */
 #define SJPEG_FMT_FLAG_ENC_CAPTURE	(1 << 0)
 #define SJPEG_FMT_FLAG_ENC_OUTPUT	(1 << 1)
 #define SJPEG_FMT_FLAG_DEC_CAPTURE	(1 << 2)
 #define SJPEG_FMT_FLAG_DEC_OUTPUT	(1 << 3)
 #define SJPEG_FMT_FLAG_S5P		(1 << 4)
 #define SJPEG_FMT_FLAG_EXYNOS3250	(1 << 5)
 #define SJPEG_FMT_FLAG_EXYNOS4		(1 << 6)
 #define SJPEG_FMT_RGB			(1 << 7)
 #define SJPEG_FMT_NON_RGB		(1 << 8)

 #define S5P_JPEG_ENCODE		0
 #define S5P_JPEG_DECODE		1

 #define FMT_TYPE_OUTPUT		0
 #define FMT_TYPE_CAPTURE	1

 #define SJPEG_SUBSAMPLING_444	0x11
 #define SJPEG_SUBSAMPLING_422	0x21
 #define SJPEG_SUBSAMPLING_420	0x22

 /* Version numbers */
 enum sjpeg_version {
 	SJPEG_S5P,
 	SJPEG_EXYNOS3250,
 	SJPEG_EXYNOS4,
 	SJPEG_EXYNOS5420,
 };

 enum exynos4_jpeg_result {
 	OK_ENC_OR_DEC,
 	ERR_PROT,
 	ERR_DEC_INVALID_FORMAT,
 	ERR_MULTI_SCAN,
 	ERR_FRAME,
 	ERR_UNKNOWN,
 };

 enum  exynos4_jpeg_img_quality_level {
 	QUALITY_LEVEL_1 = 0,	/* high */
 	QUALITY_LEVEL_2,
 	QUALITY_LEVEL_3,
 	QUALITY_LEVEL_4,	/* low */
 };

 /**
  * struct s5p_jpeg - JPEG IP abstraction
  * @lock:		the mutex protecting this structure
  * @slock:		spinlock protecting the device contexts
  * @v4l2_dev:		v4l2 device for mem2mem mode
  * @vfd_encoder:	video device node for encoder mem2mem mode
  * @vfd_decoder:	video device node for decoder mem2mem mode
  * @m2m_dev:		v4l2 mem2mem device data
  * @regs:		JPEG IP registers mapping
  * @irq:		JPEG IP irq
  * @clk:		JPEG IP clock
  * @sclk:		Exynos3250 JPEG IP special clock
  * @dev:		JPEG IP struct device
  * @alloc_ctx:		videobuf2 memory allocator's context
  * @variant:		driver variant to be used
  * @irq_status		interrupt flags set during single encode/decode
 			operation

  */
 struct s5p_jpeg {
 	struct mutex		lock;
 	spinlock_t		slock;

 	struct v4l2_device	v4l2_dev;
 	struct video_device	*vfd_encoder;
 	struct video_device	*vfd_decoder;
 	struct v4l2_m2m_dev	*m2m_dev;

 	void __iomem		*regs;
 	unsigned int		irq;
 	enum exynos4_jpeg_result irq_ret;
 	struct clk		*clk;
 	struct clk		*sclk;
 	struct device		*dev;
 	void			*alloc_ctx;
 	struct s5p_jpeg_variant *variant;
 	u32			irq_status;
 };

 struct s5p_jpeg_variant {
 	unsigned int		version;
 	unsigned int		fmt_ver_flag;
 	unsigned int		hw3250_compat:1;
 	unsigned int		htbl_reinit:1;
 	struct v4l2_m2m_ops	*m2m_ops;
 	irqreturn_t		(*jpeg_irq)(int irq, void *priv);
 };

 /**
  * struct jpeg_fmt - driver's internal color format data
  * @name:	format descritpion
  * @fourcc:	the fourcc code, 0 if not applicable
  * @depth:	number of bits per pixel
  * @colplanes:	number of color planes (1 for packed formats)
  * @h_align:	horizontal alignment order (align to 2^h_align)
  * @v_align:	vertical alignment order (align to 2^v_align)
  * @flags:	flags describing format applicability
  */
 struct s5p_jpeg_fmt {
 	char	*name;
 	u32	fourcc;
 	int	depth;
 	int	colplanes;
 	int	memplanes;
 	int	h_align;
 	int	v_align;
 	int	subsampling;
 	u32	flags;
 };

 /**
  * s5p_jpeg_q_data - parameters of one queue
  * @fmt:	driver-specific format of this queue
  * @w:		image width
  * @h:		image height
  * @size:	image buffer size in bytes
  */
 struct s5p_jpeg_q_data {
 	struct s5p_jpeg_fmt	*fmt;
 	u32			w;
 	u32			h;
 	u32			size;
 };

 /**
  * s5p_jpeg_ctx - the device context data
  * @jpeg:		JPEG IP device for this context
  * @mode:		compression (encode) operation or decompression (decode)
  * @compr_quality:	destination image quality in compression (encode) mode
  * @restart_interval:	JPEG restart interval for JPEG encoding
  * @subsampling:	subsampling of a raw format or a JPEG
  * @out_q:		source (output) queue information
  * @cap_q:		destination (capture) queue queue information
  * @scale_factor:	scale factor for JPEG decoding
  * @crop_rect:		a rectangle representing crop area of the output buffer
  * @fh:			V4L2 file handle
  * @hdr_parsed:		set if header has been parsed during decompression
  * @crop_altered:	set if crop rectangle has been altered by the user space
  * @ctrl_handler:	controls handler
  */
 struct s5p_jpeg_ctx {
 	struct s5p_jpeg		*jpeg;
 	unsigned int		mode;
 	unsigned short		compr_quality;
 	unsigned short		restart_interval;
 	unsigned short		subsampling;
 	struct s5p_jpeg_q_data	out_q;
 	struct s5p_jpeg_q_data	cap_q;
 	unsigned int		scale_factor;
 	struct v4l2_rect	crop_rect;
 	struct v4l2_fh		fh;
 	bool			hdr_parsed;
 	bool			crop_altered;
 	struct v4l2_ctrl_handler ctrl_handler;
 };

 /**
  * s5p_jpeg_buffer - description of memory containing input JPEG data
  * @size:	buffer size
  * @curr:	current position in the buffer
  * @data:	pointer to the data
  */
 struct s5p_jpeg_buffer {
 	unsigned long size;
 	unsigned long curr;
 	unsigned long data;
 };

 /**
  * struct s5p_jpeg_addr - JPEG converter physical address set for DMA
  * @y:   luminance plane physical address
  * @cb:  Cb plane physical address
  * @cr:  Cr plane physical address
  */
 struct s5p_jpeg_addr {
 	u32     y;
 	u32     cb;
 	u32     cr;
 };

 #endif /* JPEG_CORE_H */
	/* linux/drivers/media/platform/s5p-jpeg/jpeg-core.h
	*
	* Copyright (c) 2011 Samsung Electronics Co., Ltd.
	* http://www.samsung.com
	*
	* Author: Andrzej Pietrasiewicz <andrzej.p@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 JPEG_CORE_H_
	#define JPEG_CORE_H_

	#include <linux/interrupt.h>
	#include <media/v4l2-device.h>
	#include <media/v4l2-fh.h>
	#include <media/v4l2-ctrls.h>

	#define S5P_JPEG_M2M_NAME "s5p-jpeg"

	/* JPEG compression quality setting */
	#define S5P_JPEG_COMPR_QUAL_BEST 0
	#define S5P_JPEG_COMPR_QUAL_WORST 3

	/* JPEG RGB to YCbCr conversion matrix coefficients */
	#define S5P_JPEG_COEF11 0x4d
	#define S5P_JPEG_COEF12 0x97
	#define S5P_JPEG_COEF13 0x1e
	#define S5P_JPEG_COEF21 0x2c
	#define S5P_JPEG_COEF22 0x57
	#define S5P_JPEG_COEF23 0x83
	#define S5P_JPEG_COEF31 0x83
	#define S5P_JPEG_COEF32 0x6e
	#define S5P_JPEG_COEF33 0x13

	#define EXYNOS3250_IRQ_TIMEOUT 0x10000000

	/* a selection of JPEG markers */
	#define TEM 0x01
	#define SOF0 0xc0
	#define RST 0xd0
	#define SOI 0xd8
	#define EOI 0xd9
	#define DHP 0xde

	/* Flags that indicate a format can be used for capture/output */
	#define SJPEG_FMT_FLAG_ENC_CAPTURE (1 << 0)
	#define SJPEG_FMT_FLAG_ENC_OUTPUT (1 << 1)
	#define SJPEG_FMT_FLAG_DEC_CAPTURE (1 << 2)
	#define SJPEG_FMT_FLAG_DEC_OUTPUT (1 << 3)
	#define SJPEG_FMT_FLAG_S5P (1 << 4)
	#define SJPEG_FMT_FLAG_EXYNOS3250 (1 << 5)
	#define SJPEG_FMT_FLAG_EXYNOS4 (1 << 6)
	#define SJPEG_FMT_RGB (1 << 7)
	#define SJPEG_FMT_NON_RGB (1 << 8)

	#define S5P_JPEG_ENCODE 0
	#define S5P_JPEG_DECODE 1

	#define FMT_TYPE_OUTPUT 0
	#define FMT_TYPE_CAPTURE 1

	#define SJPEG_SUBSAMPLING_444 0x11
	#define SJPEG_SUBSAMPLING_422 0x21
	#define SJPEG_SUBSAMPLING_420 0x22

	/* Version numbers */
	enum sjpeg_version {
	SJPEG_S5P,
	SJPEG_EXYNOS3250,
	SJPEG_EXYNOS4,
	SJPEG_EXYNOS5420,
	};

	enum exynos4_jpeg_result {
	OK_ENC_OR_DEC,
	ERR_PROT,
	ERR_DEC_INVALID_FORMAT,
	ERR_MULTI_SCAN,
	ERR_FRAME,
	ERR_UNKNOWN,
	};

	enum exynos4_jpeg_img_quality_level {
	QUALITY_LEVEL_1 = 0, /* high */
	QUALITY_LEVEL_2,
	QUALITY_LEVEL_3,
	QUALITY_LEVEL_4, /* low */
	};

	/**
	* struct s5p_jpeg - JPEG IP abstraction
	* @lock: the mutex protecting this structure
	* @slock: spinlock protecting the device contexts
	* @v4l2_dev: v4l2 device for mem2mem mode
	* @vfd_encoder: video device node for encoder mem2mem mode
	* @vfd_decoder: video device node for decoder mem2mem mode
	* @m2m_dev: v4l2 mem2mem device data
	* @regs: JPEG IP registers mapping
	* @irq: JPEG IP irq
	* @clk: JPEG IP clock
	* @sclk: Exynos3250 JPEG IP special clock
	* @dev: JPEG IP struct device
	* @alloc_ctx: videobuf2 memory allocator's context
	* @variant: driver variant to be used
	* @irq_status interrupt flags set during single encode/decode
	operation

	*/
	struct s5p_jpeg {
	struct mutex lock;
	spinlock_t slock;

	struct v4l2_device v4l2_dev;
	struct video_device *vfd_encoder;
	struct video_device *vfd_decoder;
	struct v4l2_m2m_dev *m2m_dev;

	void __iomem *regs;
	unsigned int irq;
	enum exynos4_jpeg_result irq_ret;
	struct clk *clk;
	struct clk *sclk;
	struct device *dev;
	void *alloc_ctx;
	struct s5p_jpeg_variant *variant;
	u32 irq_status;
	};

	struct s5p_jpeg_variant {
	unsigned int version;
	unsigned int fmt_ver_flag;
	unsigned int hw3250_compat:1;
	unsigned int htbl_reinit:1;
	struct v4l2_m2m_ops *m2m_ops;
	irqreturn_t (jpeg_irq)(int irq, void priv);
	};

	/**
	* struct jpeg_fmt - driver's internal color format data
	* @name: format descritpion
	* @fourcc: the fourcc code, 0 if not applicable
	* @depth: number of bits per pixel
	* @colplanes: number of color planes (1 for packed formats)
	* @h_align: horizontal alignment order (align to 2^h_align)
	* @v_align: vertical alignment order (align to 2^v_align)
	* @flags: flags describing format applicability
	*/
	struct s5p_jpeg_fmt {
	char *name;
	u32 fourcc;
	int depth;
	int colplanes;
	int memplanes;
	int h_align;
	int v_align;
	int subsampling;
	u32 flags;
	};

	/**
	* s5p_jpeg_q_data - parameters of one queue
	* @fmt: driver-specific format of this queue
	* @w: image width
	* @h: image height
	* @size: image buffer size in bytes
	*/
	struct s5p_jpeg_q_data {
	struct s5p_jpeg_fmt *fmt;
	u32 w;
	u32 h;
	u32 size;
	};

	/**
	* s5p_jpeg_ctx - the device context data
	* @jpeg: JPEG IP device for this context
	* @mode: compression (encode) operation or decompression (decode)
	* @compr_quality: destination image quality in compression (encode) mode
	* @restart_interval: JPEG restart interval for JPEG encoding
	* @subsampling: subsampling of a raw format or a JPEG
	* @out_q: source (output) queue information
	* @cap_q: destination (capture) queue queue information
	* @scale_factor: scale factor for JPEG decoding
	* @crop_rect: a rectangle representing crop area of the output buffer
	* @fh: V4L2 file handle
	* @hdr_parsed: set if header has been parsed during decompression
	* @crop_altered: set if crop rectangle has been altered by the user space
	* @ctrl_handler: controls handler
	*/
	struct s5p_jpeg_ctx {
	struct s5p_jpeg *jpeg;
	unsigned int mode;
	unsigned short compr_quality;
	unsigned short restart_interval;
	unsigned short subsampling;
	struct s5p_jpeg_q_data out_q;
	struct s5p_jpeg_q_data cap_q;
	unsigned int scale_factor;
	struct v4l2_rect crop_rect;
	struct v4l2_fh fh;
	bool hdr_parsed;
	bool crop_altered;
	struct v4l2_ctrl_handler ctrl_handler;
	};

	/**
	* s5p_jpeg_buffer - description of memory containing input JPEG data
	* @size: buffer size
	* @curr: current position in the buffer
	* @data: pointer to the data
	*/
	struct s5p_jpeg_buffer {
	unsigned long size;
	unsigned long curr;
	unsigned long data;
	};

	/**
	* struct s5p_jpeg_addr - JPEG converter physical address set for DMA
	* @y: luminance plane physical address
	* @cb: Cb plane physical address
	* @cr: Cr plane physical address
	*/
	struct s5p_jpeg_addr {
	u32 y;
	u32 cb;
	u32 cr;
	};

	#endif /* JPEG_CORE_H */