path: root/drivers/media/video/s5p-fimc/fimc-core.h

/*
 * Copyright (C) 2010 - 2011 Samsung Electronics Co., Ltd.
 *
 * 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_CORE_H_
#define FIMC_CORE_H_

/*#define DEBUG*/

#include <linux/platform_device.h>
#include <linux/sched.h>
#include <linux/spinlock.h>
#include <linux/types.h>
#include <linux/videodev2.h>
#include <linux/io.h>

#include <media/media-entity.h>
#include <media/videobuf2-core.h>
#include <media/v4l2-device.h>
#include <media/v4l2-mem2mem.h>
#include <media/v4l2-mediabus.h>
#include <media/s5p_fimc.h>

#include "regs-fimc.h"

#define err(fmt, args...) \
	printk(KERN_ERR "%s:%d: " fmt "\n", __func__, __LINE__, ##args)

#define dbg(fmt, args...) \
	pr_debug("%s:%d: " fmt "\n", __func__, __LINE__, ##args)

/* Time to wait for next frame VSYNC interrupt while stopping operation. */
#define FIMC_SHUTDOWN_TIMEOUT	((100*HZ)/1000)
#define MAX_FIMC_CLOCKS		2
#define FIMC_MODULE_NAME	"s5p-fimc"
#define FIMC_MAX_DEVS		4
#define FIMC_MAX_OUT_BUFS	4
#define SCALER_MAX_HRATIO	64
#define SCALER_MAX_VRATIO	64
#define DMA_MIN_SIZE		8

/* indices to the clocks array */
enum {
	CLK_BUS,
	CLK_GATE,
};

enum fimc_dev_flags {
	ST_LPM,
	/* m2m node */
	ST_M2M_RUN,
	ST_M2M_PEND,
	ST_M2M_SUSPENDING,
	ST_M2M_SUSPENDED,
	/* capture node */
	ST_CAPT_PEND,
	ST_CAPT_RUN,
	ST_CAPT_STREAM,
	ST_CAPT_SHUT,
	ST_CAPT_BUSY,
};

#define fimc_m2m_active(dev) test_bit(ST_M2M_RUN, &(dev)->state)
#define fimc_m2m_pending(dev) test_bit(ST_M2M_PEND, &(dev)->state)

#define fimc_capture_running(dev) test_bit(ST_CAPT_RUN, &(dev)->state)
#define fimc_capture_pending(dev) test_bit(ST_CAPT_PEND, &(dev)->state)
#define fimc_capture_busy(dev) test_bit(ST_CAPT_BUSY, &(dev)->state)

enum fimc_datapath {
	FIMC_CAMERA,
	FIMC_DMA,
	FIMC_LCDFIFO,
	FIMC_WRITEBACK
};

enum fimc_color_fmt {
	S5P_FIMC_RGB565 = 0x10,
	S5P_FIMC_RGB666,
	S5P_FIMC_RGB888,
	S5P_FIMC_RGB30_LOCAL,
	S5P_FIMC_YCBCR420 = 0x20,
	S5P_FIMC_YCBYCR422,
	S5P_FIMC_YCRYCB422,
	S5P_FIMC_CBYCRY422,
	S5P_FIMC_CRYCBY422,
	S5P_FIMC_YCBCR444_LOCAL,
};

#define fimc_fmt_is_rgb(x) ((x) & 0x10)

/* Cb/Cr chrominance components order for 2 plane Y/CbCr 4:2:2 formats. */
#define	S5P_FIMC_LSB_CRCB	S5P_CIOCTRL_ORDER422_2P_LSB_CRCB

/* The embedded image effect selection */
#define	S5P_FIMC_EFFECT_ORIGINAL	S5P_CIIMGEFF_FIN_BYPASS
#define	S5P_FIMC_EFFECT_ARBITRARY	S5P_CIIMGEFF_FIN_ARBITRARY
#define	S5P_FIMC_EFFECT_NEGATIVE	S5P_CIIMGEFF_FIN_NEGATIVE
#define	S5P_FIMC_EFFECT_ARTFREEZE	S5P_CIIMGEFF_FIN_ARTFREEZE
#define	S5P_FIMC_EFFECT_EMBOSSING	S5P_CIIMGEFF_FIN_EMBOSSING
#define	S5P_FIMC_EFFECT_SIKHOUETTE	S5P_CIIMGEFF_FIN_SILHOUETTE

/* The hardware context state. */
#define	FIMC_PARAMS		(1 << 0)
#define	FIMC_SRC_ADDR		(1 << 1)
#define	FIMC_DST_ADDR		(1 << 2)
#define	FIMC_SRC_FMT		(1 << 3)
#define	FIMC_DST_FMT		(1 << 4)
#define	FIMC_CTX_M2M		(1 << 5)
#define	FIMC_CTX_CAP		(1 << 6)
#define	FIMC_CTX_SHUT		(1 << 7)

/* Image conversion flags */
#define	FIMC_IN_DMA_ACCESS_TILED	(1 << 0)
#define	FIMC_IN_DMA_ACCESS_LINEAR	(0 << 0)
#define	FIMC_OUT_DMA_ACCESS_TILED	(1 << 1)
#define	FIMC_OUT_DMA_ACCESS_LINEAR	(0 << 1)
#define	FIMC_SCAN_MODE_PROGRESSIVE	(0 << 2)
#define	FIMC_SCAN_MODE_INTERLACED	(1 << 2)
/*
 * YCbCr data dynamic range for RGB-YUV color conversion.
 * Y/Cb/Cr: (0 ~ 255) */
#define	FIMC_COLOR_RANGE_WIDE		(0 << 3)
/* Y (16 ~ 235), Cb/Cr (16 ~ 240) */
#define	FIMC_COLOR_RANGE_NARROW		(1 << 3)

#define	FLIP_NONE			0
#define	FLIP_X_AXIS			1
#define	FLIP_Y_AXIS			2
#define	FLIP_XY_AXIS			(FLIP_X_AXIS | FLIP_Y_AXIS)

/**
 * struct fimc_fmt - the driver's internal color format data
 * @mbus_code: Media Bus pixel code, -1 if not applicable
 * @name: format description
 * @fourcc: the fourcc code for this format, 0 if not applicable
 * @color: the corresponding fimc_color_fmt
 * @memplanes: number of physically non-contiguous data planes
 * @colplanes: number of physically contiguous data planes
 * @depth: per plane driver's private 'number of bits per pixel'
 * @flags: flags indicating which operation mode format applies to
 */
struct fimc_fmt {
	enum v4l2_mbus_pixelcode mbus_code;
	char	*name;
	u32	fourcc;
	u32	color;
	u16	memplanes;
	u16	colplanes;
	u8	depth[VIDEO_MAX_PLANES];
	u16	flags;
#define FMT_FLAGS_CAM	(1 << 0)
#define FMT_FLAGS_M2M	(1 << 1)
};

/**
 * struct fimc_dma_offset - pixel offset information for DMA
 * @y_h:	y value horizontal offset
 * @y_v:	y value vertical offset
 * @cb_h:	cb value horizontal offset
 * @cb_v:	cb value vertical offset
 * @cr_h:	cr value horizontal offset
 * @cr_v:	cr value vertical offset
 */
struct fimc_dma_offset {
	int	y_h;
	int	y_v;
	int	cb_h;
	int	cb_v;
	int	cr_h;
	int	cr_v;
};

/**
 * struct fimc_effect - color effect information
 * @type:	effect type
 * @pat_cb:	cr value when type is "arbitrary"
 * @pat_cr:	cr value when type is "arbitrary"
 */
struct fimc_effect {
	u32	type;
	u8	pat_cb;
	u8	pat_cr;
};

/**
 * struct fimc_scaler - the configuration data for FIMC inetrnal scaler
 * @scaleup_h:		flag indicating scaling up horizontally
 * @scaleup_v:		flag indicating scaling up vertically
 * @copy_mode:		flag indicating transparent DMA transfer (no scaling
 *			and color format conversion)
 * @enabled:		flag indicating if the scaler is used
 * @hfactor:		horizontal shift factor
 * @vfactor:		vertical shift factor
 * @pre_hratio:		horizontal ratio of the prescaler
 * @pre_vratio:		vertical ratio of the prescaler
 * @pre_dst_width:	the prescaler's destination width
 * @pre_dst_height:	the prescaler's destination height
 * @main_hratio:	the main scaler's horizontal ratio
 * @main_vratio:	the main scaler's vertical ratio
 * @real_width:		source pixel (width - offset)
 * @real_height:	source pixel (height - offset)
 */
struct fimc_scaler {
	unsigned int scaleup_h:1;
	unsigned int scaleup_v:1;
	unsigned int copy_mode:1;
	unsigned int enabled:1;
	u32	hfactor;
	u32	vfactor;
	u32	pre_hratio;
	u32	pre_vratio;
	u32	pre_dst_width;
	u32	pre_dst_height;
	u32	main_hratio;
	u32	main_vratio;
	u32	real_width;
	u32	real_height;
};

/**
 * struct fimc_addr - the FIMC physical address set for DMA
 * @y:	 luminance plane physical address
 * @cb:	 Cb plane physical address
 * @cr:	 Cr plane physical address
 */
struct fimc_addr {
	u32	y;
	u32	cb;
	u32	cr;
};

/**
 * struct fimc_vid_buffer - the driver's video buffer
 * @vb:    v4l videobuf buffer
 * @list:  linked list structure for buffer queue
 * @paddr: precalculated physical address set
 * @index: buffer index for the output DMA engine
 */
struct fimc_vid_buffer {
	struct vb2_buffer	vb;
	struct list_head	list;
	struct fimc_addr	paddr;
	int			index;
};

/**
 * struct fimc_frame - source/target frame properties
 * @f_width:	image full width (virtual screen size)
 * @f_height:	image full height (virtual screen size)
 * @o_width:	original image width as set by S_FMT
 * @o_height:	original image height as set by S_FMT
 * @offs_h:	image horizontal pixel offset
 * @offs_v:	image vertical pixel offset
 * @width:	image pixel width
 * @height:	image pixel weight
 * @payload:	image size in bytes (w x h x bpp)
 * @paddr:	image frame buffer physical addresses
 * @dma_offset:	DMA offset in bytes
 * @fmt:	fimc color format pointer
 */
struct fimc_frame {
	u32	f_width;
	u32	f_height;
	u32	o_width;
	u32	o_height;
	u32	offs_h;
	u32	offs_v;
	u32	width;
	u32	height;
	unsigned long		payload[VIDEO_MAX_PLANES];
	struct fimc_addr	paddr;
	struct fimc_dma_offset	dma_offset;
	struct fimc_fmt		*fmt;
};

/**
 * struct fimc_m2m_device - v4l2 memory-to-memory device data
 * @vfd: the video device node for v4l2 m2m mode
 * @m2m_dev: v4l2 memory-to-memory device data
 * @ctx: hardware context data
 * @refcnt: the reference counter
 */
struct fimc_m2m_device {
	struct video_device	*vfd;
	struct v4l2_m2m_dev	*m2m_dev;
	struct fimc_ctx		*ctx;
	int			refcnt;
};

/**
 * struct fimc_vid_cap - camera capture device information
 * @ctx: hardware context data
 * @vfd: video device node for camera capture mode
 * @sd: pointer to camera sensor subdevice currently in use
 * @vd_pad: fimc video capture node pad
 * @fmt: Media Bus format configured at selected image sensor
 * @pending_buf_q: the pending buffer queue head
 * @active_buf_q: the queue head of buffers scheduled in hardware
 * @vbq: the capture am video buffer queue
 * @active_buf_cnt: number of video buffers scheduled in hardware
 * @buf_index: index for managing the output DMA buffers
 * @frame_count: the frame counter for statistics
 * @reqbufs_count: the number of buffers requested in REQBUFS ioctl
 * @input_index: input (camera sensor) index
 * @refcnt: driver's private reference counter
 * @user_subdev_api: true if subdevs are not configured by the host driver
 */
struct fimc_vid_cap {
	struct fimc_ctx			*ctx;
	struct vb2_alloc_ctx		*alloc_ctx;
	struct video_device		*vfd;
	struct v4l2_subdev		*sd;;
	struct media_pad		vd_pad;
	struct v4l2_mbus_framefmt	fmt;
	struct list_head		pending_buf_q;
	struct list_head		active_buf_q;
	struct vb2_queue		vbq;
	int				active_buf_cnt;
	int				buf_index;
	unsigned int			frame_count;
	unsigned int			reqbufs_count;
	int				input_index;
	int				refcnt;
	bool				user_subdev_api;
};

/**
 *  struct fimc_pix_limit - image pixel size limits in various IP configurations
 *
 *  @scaler_en_w: max input pixel width when the scaler is enabled
 *  @scaler_dis_w: max input pixel width when the scaler is disabled
 *  @in_rot_en_h: max input width with the input rotator is on
 *  @in_rot_dis_w: max input width with the input rotator is off
 *  @out_rot_en_w: max output width with the output rotator on
 *  @out_rot_dis_w: max output width with the output rotator off
 */
struct fimc_pix_limit {
	u16 scaler_en_w;
	u16 scaler_dis_w;
	u16 in_rot_en_h;
	u16 in_rot_dis_w;
	u16 out_rot_en_w;
	u16 out_rot_dis_w;
};

/**
 * struct samsung_fimc_variant - camera interface variant information
 *
 * @pix_hoff: indicate whether horizontal offset is in pixels or in bytes
 * @has_inp_rot: set if has input rotator
 * @has_out_rot: set if has output rotator
 * @has_cistatus2: 1 if CISTATUS2 register is present in this IP revision
 * @has_mainscaler_ext: 1 if extended mainscaler ratios in CIEXTEN register
 *			 are present in this IP revision
 * @has_cam_if: set if this instance has a camera input interface
 * @pix_limit: pixel size constraints for the scaler
 * @min_inp_pixsize: minimum input pixel size
 * @min_out_pixsize: minimum output pixel size
 * @hor_offs_align: horizontal pixel offset aligment
 * @out_buf_count: the number of buffers in output DMA sequence
 */
struct samsung_fimc_variant {
	unsigned int	pix_hoff:1;
	unsigned int	has_inp_rot:1;
	unsigned int	has_out_rot:1;
	unsigned int	has_cistatus2: