/*
 * Copyright (C) 2013-2015 Freescale Semiconductor, Inc. All Rights Reserved
 */

/*
 * 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.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

/*
 * @file uapi/linux/mxcfb.h
 *
 * @brief Global header file for the MXC frame buffer
 *
 * @ingroup Framebuffer
 */
#ifndef __ASM_ARCH_MXCFB_H__
#define __ASM_ARCH_MXCFB_H__

#include <linux/fb.h>

#define FB_SYNC_OE_LOW_ACT	0x80000000
#define FB_SYNC_CLK_LAT_FALL	0x40000000
#define FB_SYNC_DATA_INVERT	0x20000000
#define FB_SYNC_CLK_IDLE_EN	0x10000000
#define FB_SYNC_SHARP_MODE	0x08000000
#define FB_SYNC_SWAP_RGB	0x04000000
#define FB_ACCEL_TRIPLE_FLAG	0x00000000
#define FB_ACCEL_DOUBLE_FLAG	0x00000001

struct mxcfb_gbl_alpha {
	int enable;
	int alpha;
};

struct mxcfb_loc_alpha {
	int enable;
	int alpha_in_pixel;
	unsigned long alpha_phy_addr0;
	unsigned long alpha_phy_addr1;
};

struct mxcfb_color_key {
	int enable;
	__u32 color_key;
};

struct mxcfb_pos {
	__u16 x;
	__u16 y;
};

struct mxcfb_gamma {
	int enable;
	int constk[16];
	int slopek[16];
};

struct mxcfb_gpu_split_fmt {
	struct fb_var_screeninfo var;
	unsigned long offset;
};

struct mxcfb_rect {
	__u32 top;
	__u32 left;
	__u32 width;
	__u32 height;
};

#define GRAYSCALE_8BIT				0x1
#define GRAYSCALE_8BIT_INVERTED			0x2
#define GRAYSCALE_4BIT                          0x3
#define GRAYSCALE_4BIT_INVERTED                 0x4

#define AUTO_UPDATE_MODE_REGION_MODE		0
#define AUTO_UPDATE_MODE_AUTOMATIC_MODE		1

#define UPDATE_SCHEME_SNAPSHOT			0
#define UPDATE_SCHEME_QUEUE			1
#define UPDATE_SCHEME_QUEUE_AND_MERGE		2

#define UPDATE_MODE_PARTIAL			0x0
#define UPDATE_MODE_FULL			0x1

#define WAVEFORM_MODE_GLR16			4
#define WAVEFORM_MODE_GLD16			5
#define WAVEFORM_MODE_AUTO			257

#define TEMP_USE_AMBIENT			0x1000

#define EPDC_FLAG_ENABLE_INVERSION		0x01
#define EPDC_FLAG_FORCE_MONOCHROME		0x02
#define EPDC_FLAG_USE_CMAP			0x04
#define EPDC_FLAG_USE_ALT_BUFFER		0x100
#define EPDC_FLAG_TEST_COLLISION		0x200
#define EPDC_FLAG_GROUP_UPDATE			0x400
#define EPDC_FLAG_USE_DITHERING_Y1		0x2000
#define EPDC_FLAG_USE_DITHERING_Y4		0x4000
#define EPDC_FLAG_USE_REGAL				0x8000

enum mxcfb_dithering_mode {
	EPDC_FLAG_USE_DITHERING_PASSTHROUGH = 0x0,
	EPDC_FLAG_USE_DITHERING_FLOYD_STEINBERG,
	EPDC_FLAG_USE_DITHERING_ATKINSON,
	EPDC_FLAG_USE_DITHERING_ORDERED,
	EPDC_FLAG_USE_DITHERING_QUANT_ONLY,
	EPDC_FLAG_USE_DITHERING_MAX,
};

#define FB_POWERDOWN_DISABLE			-1

struct mxcfb_alt_buffer_data {
	__u32 phys_addr;
	__u32 width;	/* width of entire buffer */
	__u32 height;	/* height of entire buffer */
	struct mxcfb_rect alt_update_region;	/* region within buffer to update */
};

struct mxcfb_update_data {
	struct mxcfb_rect update_region;
	__u32 waveform_mode;
	__u32 update_mode;
	__u32 update_marker;
	int temp;
	unsigned int flags;
	int dither_mode;
	int quant_bit;
	struct mxcfb_alt_buffer_data alt_buffer_data;
};

struct mxcfb_update_marker_data {
	__u32 update_marker;
	__u32 collision_test;
};

/*
 * Structure used to define waveform modes for driver
 * Needed for driver to perform auto-waveform selection
 */
struct mxcfb_waveform_modes {
	int mode_init;
	int mode_du;
	int mode_gc4;
	int mode_gc8;
	int mode_gc16;
	int mode_gc32;
};

/*
 * Structure used to define a 5*3 matrix of parameters for
 * setting IPU DP CSC module related to this framebuffer.
 */
struct mxcfb_csc_matrix {
	int param[5][3];
};

#define MXCFB_WAIT_FOR_VSYNC	_IOW('F', 0x20, u_int32_t)
#define MXCFB_SET_GBL_ALPHA     _IOW('F', 0x21, struct mxcfb_gbl_alpha)
#define MXCFB_SET_CLR_KEY       _IOW('F', 0x22, struct mxcfb_color_key)
#define MXCFB_SET_OVERLAY_POS   _IOWR('F', 0x24, struct mxcfb_pos)
#define MXCFB_GET_FB_IPU_CHAN 	_IOR('F', 0x25, u_int32_t)
#define MXCFB_SET_LOC_ALPHA     _IOWR('F', 0x26, struct mxcfb_loc_alpha)
#define MXCFB_SET_LOC_ALP_BUF    _IOW('F', 0x27, unsigned long)
#define MXCFB_SET_GAMMA	       _IOW('F', 0x28, struct mxcfb_gamma)
#define MXCFB_GET_FB_IPU_DI 	_IOR('F', 0x29, u_int32_t)
#define MXCFB_GET_DIFMT	       _IOR('F', 0x2A, u_int32_t)
#define MXCFB_GET_FB_BLANK     _IOR('F', 0x2B, u_int32_t)
#define MXCFB_SET_DIFMT		_IOW('F', 0x2C, u_int32_t)
#define MXCFB_CSC_UPDATE	_IOW('F', 0x2D, struct mxcfb_csc_matrix)
#define MXCFB_SET_GPU_SPLIT_FMT	_IOW('F', 0x2F, struct mxcfb_gpu_split_fmt)
#define MXCFB_SET_PREFETCH	_IOW('F', 0x30, int)
#define MXCFB_GET_PREFETCH	_IOR('F', 0x31, int)

/* IOCTLs for E-ink panel updates */
#define MXCFB_SET_WAVEFORM_MODES	_IOW('F', 0x2B, struct mxcfb_waveform_modes)
#define MXCFB_SET_TEMPERATURE		_IOW('F', 0x2C, int32_t)
#define MXCFB_SET_AUTO_UPDATE_MODE	_IOW('F', 0x2D, __u32)
#define MXCFB_SEND_UPDATE		_IOW('F', 0x2E, struct mxcfb_update_data)
#define MXCFB_WAIT_FOR_UPDATE_COMPLETE	_IOWR('F', 0x2F, struct mxcfb_update_marker_data)
#define MXCFB_SET_PWRDOWN_DELAY		_IOW('F', 0x30, int32_t)
#define MXCFB_GET_PWRDOWN_DELAY		_IOR('F', 0x31, int32_t)
#define MXCFB_SET_UPDATE_SCHEME		_IOW('F', 0x32, __u32)
#define MXCFB_GET_WORK_BUFFER		_IOWR('F', 0x34, unsigned long)
#define MXCFB_DISABLE_EPDC_ACCESS	_IO('F', 0x35)
#define MXCFB_ENABLE_EPDC_ACCESS	_IO('F', 0x36)
#endif