drivers/video/fbdev/geode/lxfb.h - kernel/quantenna - Git at Google

 /* Geode LX framebuffer driver
  *
  * Copyright (C) 2006-2007, Advanced Micro Devices,Inc.
  * Copyright (c) 2008  Andres Salomon <dilinger@debian.org>
  *
  * 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.
  */
 #ifndef _LXFB_H_
 #define _LXFB_H_

 #include <linux/fb.h>

 #define GP_REG_COUNT	(0x7c / 4)
 #define DC_REG_COUNT	(0xf0 / 4)
 #define VP_REG_COUNT	(0x158 / 8)
 #define FP_REG_COUNT	(0x60 / 8)

 #define DC_PAL_COUNT	0x104
 #define DC_HFILT_COUNT	0x100
 #define DC_VFILT_COUNT	0x100
 #define VP_COEFF_SIZE	0x1000
 #define VP_PAL_COUNT	0x100

 #define OUTPUT_CRT   0x01
 #define OUTPUT_PANEL 0x02

 struct lxfb_par {
 	int output;

 	void __iomem *gp_regs;
 	void __iomem *dc_regs;
 	void __iomem *vp_regs;
 #ifdef CONFIG_PM
 	int powered_down;

 	/* register state, for power mgmt functionality */
 	struct {
 		uint64_t padsel;
 		uint64_t dotpll;
 		uint64_t dfglcfg;
 		uint64_t dcspare;
 	} msr;

 	uint32_t gp[GP_REG_COUNT];
 	uint32_t dc[DC_REG_COUNT];
 	uint64_t vp[VP_REG_COUNT];
 	uint64_t fp[FP_REG_COUNT];

 	uint32_t dc_pal[DC_PAL_COUNT];
 	uint32_t vp_pal[VP_PAL_COUNT];
 	uint32_t hcoeff[DC_HFILT_COUNT * 2];
 	uint32_t vcoeff[DC_VFILT_COUNT];
 	uint32_t vp_coeff[VP_COEFF_SIZE / 4];
 #endif
 };

 static inline unsigned int lx_get_pitch(unsigned int xres, int bpp)
 {
 	return (((xres * (bpp >> 3)) + 7) & ~7);
 }

 void lx_set_mode(struct fb_info *);
 unsigned int lx_framebuffer_size(void);
 int lx_blank_display(struct fb_info *, int);
 void lx_set_palette_reg(struct fb_info *, unsigned int, unsigned int,
 			unsigned int, unsigned int);

 #ifdef CONFIG_PM
 int lx_powerdown(struct fb_info *info);
 int lx_powerup(struct fb_info *info);
 #endif


 /* Graphics Processor registers (table 6-29 from the data book) */
 enum gp_registers {
 	GP_DST_OFFSET = 0,
 	GP_SRC_OFFSET,
 	GP_STRIDE,
 	GP_WID_HEIGHT,

 	GP_SRC_COLOR_FG,
 	GP_SRC_COLOR_BG,
 	GP_PAT_COLOR_0,
 	GP_PAT_COLOR_1,

 	GP_PAT_COLOR_2,
 	GP_PAT_COLOR_3,
 	GP_PAT_COLOR_4,
 	GP_PAT_COLOR_5,

 	GP_PAT_DATA_0,
 	GP_PAT_DATA_1,
 	GP_RASTER_MODE,
 	GP_VECTOR_MODE,

 	GP_BLT_MODE,
 	GP_BLT_STATUS,
 	GP_HST_SRC,
 	GP_BASE_OFFSET,

 	GP_CMD_TOP,
 	GP_CMD_BOT,
 	GP_CMD_READ,
 	GP_CMD_WRITE,

 	GP_CH3_OFFSET,
 	GP_CH3_MODE_STR,
 	GP_CH3_WIDHI,
 	GP_CH3_HSRC,

 	GP_LUT_INDEX,
 	GP_LUT_DATA,
 	GP_INT_CNTRL, /* 0x78 */
 };

 #define GP_BLT_STATUS_CE		(1 << 4)	/* cmd buf empty */
 #define GP_BLT_STATUS_PB		(1 << 0)	/* primitive busy */


 /* Display Controller registers (table 6-47 from the data book) */
 enum dc_registers {
 	DC_UNLOCK = 0,
 	DC_GENERAL_CFG,
 	DC_DISPLAY_CFG,
 	DC_ARB_CFG,

 	DC_FB_ST_OFFSET,
 	DC_CB_ST_OFFSET,
 	DC_CURS_ST_OFFSET,
 	DC_RSVD_0,

 	DC_VID_Y_ST_OFFSET,
 	DC_VID_U_ST_OFFSET,
 	DC_VID_V_ST_OFFSET,
 	DC_DV_TOP,

 	DC_LINE_SIZE,
 	DC_GFX_PITCH,
 	DC_VID_YUV_PITCH,
 	DC_RSVD_1,

 	DC_H_ACTIVE_TIMING,
 	DC_H_BLANK_TIMING,
 	DC_H_SYNC_TIMING,
 	DC_RSVD_2,

 	DC_V_ACTIVE_TIMING,
 	DC_V_BLANK_TIMING,
 	DC_V_SYNC_TIMING,
 	DC_FB_ACTIVE,

 	DC_CURSOR_X,
 	DC_CURSOR_Y,
 	DC_RSVD_3,
 	DC_LINE_CNT,

 	DC_PAL_ADDRESS,
 	DC_PAL_DATA,
 	DC_DFIFO_DIAG,
 	DC_CFIFO_DIAG,

 	DC_VID_DS_DELTA,
 	DC_GLIU0_MEM_OFFSET,
 	DC_DV_CTL,
 	DC_DV_ACCESS,

 	DC_GFX_SCALE,
 	DC_IRQ_FILT_CTL,
 	DC_FILT_COEFF1,
 	DC_FILT_COEFF2,

 	DC_VBI_EVEN_CTL,
 	DC_VBI_ODD_CTL,
 	DC_VBI_HOR,
 	DC_VBI_LN_ODD,

 	DC_VBI_LN_EVEN,
 	DC_VBI_PITCH,
 	DC_CLR_KEY,
 	DC_CLR_KEY_MASK,

 	DC_CLR_KEY_X,
 	DC_CLR_KEY_Y,
 	DC_IRQ,
 	DC_RSVD_4,

 	DC_RSVD_5,
 	DC_GENLK_CTL,
 	DC_VID_EVEN_Y_ST_OFFSET,
 	DC_VID_EVEN_U_ST_OFFSET,

 	DC_VID_EVEN_V_ST_OFFSET,
 	DC_V_ACTIVE_EVEN_TIMING,
 	DC_V_BLANK_EVEN_TIMING,
 	DC_V_SYNC_EVEN_TIMING,	/* 0xec */
 };

 #define DC_UNLOCK_LOCK			0x00000000
 #define DC_UNLOCK_UNLOCK		0x00004758	/* magic value */

 #define DC_GENERAL_CFG_FDTY		(1 << 17)
 #define DC_GENERAL_CFG_DFHPEL_SHIFT	(12)
 #define DC_GENERAL_CFG_DFHPSL_SHIFT	(8)
 #define DC_GENERAL_CFG_VGAE		(1 << 7)
 #define DC_GENERAL_CFG_DECE		(1 << 6)
 #define DC_GENERAL_CFG_CMPE		(1 << 5)
 #define DC_GENERAL_CFG_VIDE		(1 << 3)
 #define DC_GENERAL_CFG_DFLE		(1 << 0)

 #define DC_DISPLAY_CFG_VISL		(1 << 27)
 #define DC_DISPLAY_CFG_PALB		(1 << 25)
 #define DC_DISPLAY_CFG_DCEN		(1 << 24)
 #define DC_DISPLAY_CFG_DISP_MODE_24BPP	(1 << 9)
 #define DC_DISPLAY_CFG_DISP_MODE_16BPP	(1 << 8)
 #define DC_DISPLAY_CFG_DISP_MODE_8BPP	(0)
 #define DC_DISPLAY_CFG_TRUP		(1 << 6)
 #define DC_DISPLAY_CFG_VDEN		(1 << 4)
 #define DC_DISPLAY_CFG_GDEN		(1 << 3)
 #define DC_DISPLAY_CFG_TGEN		(1 << 0)

 #define DC_DV_TOP_DV_TOP_EN		(1 << 0)

 #define DC_DV_CTL_DV_LINE_SIZE		((1 << 10) | (1 << 11))
 #define DC_DV_CTL_DV_LINE_SIZE_1K	(0)
 #define DC_DV_CTL_DV_LINE_SIZE_2K	(1 << 10)
 #define DC_DV_CTL_DV_LINE_SIZE_4K	(1 << 11)
 #define DC_DV_CTL_DV_LINE_SIZE_8K	((1 << 10) | (1 << 11))
 #define DC_DV_CTL_CLEAR_DV_RAM		(1 << 0)

 #define DC_IRQ_FILT_CTL_H_FILT_SEL	(1 << 10)

 #define DC_CLR_KEY_CLR_KEY_EN		(1 << 24)

 #define DC_IRQ_VIP_VSYNC_IRQ_STATUS	(1 << 21)	/* undocumented? */
 #define DC_IRQ_STATUS			(1 << 20)	/* undocumented? */
 #define DC_IRQ_VIP_VSYNC_LOSS_IRQ_MASK	(1 << 1)
 #define DC_IRQ_MASK			(1 << 0)

 #define DC_GENLK_CTL_FLICK_SEL_MASK	(0x0F << 28)
 #define DC_GENLK_CTL_ALPHA_FLICK_EN	(1 << 25)
 #define DC_GENLK_CTL_FLICK_EN		(1 << 24)
 #define DC_GENLK_CTL_GENLK_EN		(1 << 18)


 /*
  * Video Processor registers (table 6-71).
  * There is space for 64 bit values, but we never use more than the
  * lower 32 bits.  The actual register save/restore code only bothers
  * to restore those 32 bits.
  */
 enum vp_registers {
 	VP_VCFG = 0,
 	VP_DCFG,

 	VP_VX,
 	VP_VY,

 	VP_SCL,
 	VP_VCK,

 	VP_VCM,
 	VP_PAR,

 	VP_PDR,
 	VP_SLR,

 	VP_MISC,
 	VP_CCS,

 	VP_VYS,
 	VP_VXS,

 	VP_RSVD_0,
 	VP_VDC,

 	VP_RSVD_1,
 	VP_CRC,

 	VP_CRC32,
 	VP_VDE,

 	VP_CCK,
 	VP_CCM,

 	VP_CC1,
 	VP_CC2,

 	VP_A1X,
 	VP_A1Y,

 	VP_A1C,
 	VP_A1T,

 	VP_A2X,
 	VP_A2Y,

 	VP_A2C,
 	VP_A2T,

 	VP_A3X,
 	VP_A3Y,

 	VP_A3C,
 	VP_A3T,

 	VP_VRR,
 	VP_AWT,

 	VP_VTM,
 	VP_VYE,

 	VP_A1YE,
 	VP_A2YE,

 	VP_A3YE,	/* 0x150 */

 	VP_VCR = 0x1000, /* 0x1000 - 0x1fff */
 };

 #define VP_VCFG_VID_EN			(1 << 0)

 #define VP_DCFG_GV_GAM			(1 << 21)
 #define VP_DCFG_PWR_SEQ_DELAY		((1 << 17) | (1 << 18) | (1 << 19))
 #define VP_DCFG_PWR_SEQ_DELAY_DEFAULT	(1 << 19)	/* undocumented */
 #define VP_DCFG_CRT_SYNC_SKW		((1 << 14) | (1 << 15) | (1 << 16))
 #define VP_DCFG_CRT_SYNC_SKW_DEFAULT	(1 << 16)
 #define VP_DCFG_CRT_VSYNC_POL		(1 << 9)
 #define VP_DCFG_CRT_HSYNC_POL		(1 << 8)
 #define VP_DCFG_DAC_BL_EN		(1 << 3)
 #define VP_DCFG_VSYNC_EN		(1 << 2)
 #define VP_DCFG_HSYNC_EN		(1 << 1)
 #define VP_DCFG_CRT_EN			(1 << 0)

 #define VP_MISC_APWRDN			(1 << 11)
 #define VP_MISC_DACPWRDN		(1 << 10)
 #define VP_MISC_BYP_BOTH		(1 << 0)


 /*
  * Flat Panel registers (table 6-71).
  * Also 64 bit registers; see above note about 32-bit handling.
  */

 /* we're actually in the VP register space, starting at address 0x400 */
 #define VP_FP_START	0x400

 enum fp_registers {
 	FP_PT1 = 0,
 	FP_PT2,

 	FP_PM,
 	FP_DFC,

 	FP_RSVD_0,
 	FP_RSVD_1,

 	FP_RSVD_2,
 	FP_RSVD_3,

 	FP_RSVD_4,
 	FP_DCA,

 	FP_DMD,
 	FP_CRC, /* 0x458 */
 };

 #define FP_PT2_HSP			(1 << 22)
 #define FP_PT2_VSP			(1 << 23)
 #define FP_PT2_SCRC			(1 << 27)	/* shfclk free */

 #define FP_PM_P				(1 << 24)	/* panel power ctl */
 #define FP_PM_PANEL_PWR_UP		(1 << 3)	/* r/o */
 #define FP_PM_PANEL_PWR_DOWN		(1 << 2)	/* r/o */
 #define FP_PM_PANEL_OFF			(1 << 1)	/* r/o */
 #define FP_PM_PANEL_ON			(1 << 0)	/* r/o */

 #define FP_DFC_BC			((1 << 4) | (1 << 5) | (1 << 6))


 /* register access functions */

 static inline uint32_t read_gp(struct lxfb_par *par, int reg)
 {
 	return readl(par->gp_regs + 4*reg);
 }

 static inline void write_gp(struct lxfb_par *par, int reg, uint32_t val)
 {
 	writel(val, par->gp_regs + 4*reg);
 }

 static inline uint32_t read_dc(struct lxfb_par *par, int reg)
 {
 	return readl(par->dc_regs + 4*reg);
 }

 static inline void write_dc(struct lxfb_par *par, int reg, uint32_t val)
 {
 	writel(val, par->dc_regs + 4*reg);
 }

 static inline uint32_t read_vp(struct lxfb_par *par, int reg)
 {
 	return readl(par->vp_regs + 8*reg);
 }

 static inline void write_vp(struct lxfb_par *par, int reg, uint32_t val)
 {
 	writel(val, par->vp_regs + 8*reg);
 }

 static inline uint32_t read_fp(struct lxfb_par *par, int reg)
 {
 	return readl(par->vp_regs + 8*reg + VP_FP_START);
 }

 static inline void write_fp(struct lxfb_par *par, int reg, uint32_t val)
 {
 	writel(val, par->vp_regs + 8*reg + VP_FP_START);
 }


 /* MSRs are defined in linux/cs5535.h; their bitfields are here */

 #define MSR_GLCP_DOTPLL_LOCK		(1 << 25)	/* r/o */
 #define MSR_GLCP_DOTPLL_HALFPIX		(1 << 24)
 #define MSR_GLCP_DOTPLL_BYPASS		(1 << 15)
 #define MSR_GLCP_DOTPLL_DOTRESET	(1 << 0)

 /* note: this is actually the VP's GLD_MSR_CONFIG */
 #define MSR_LX_GLD_MSR_CONFIG_FMT	((1 << 3) | (1 << 4) | (1 << 5))
 #define MSR_LX_GLD_MSR_CONFIG_FMT_FP	(1 << 3)
 #define MSR_LX_GLD_MSR_CONFIG_FMT_CRT	(0)
 #define MSR_LX_GLD_MSR_CONFIG_FPC	(1 << 15)	/* FP *and* CRT */

 #define MSR_LX_MSR_PADSEL_TFT_SEL_LOW	0xDFFFFFFF	/* ??? */
 #define MSR_LX_MSR_PADSEL_TFT_SEL_HIGH	0x0000003F	/* ??? */

 #define MSR_LX_SPARE_MSR_DIS_CFIFO_HGO	(1 << 11)	/* undocumented */
 #define MSR_LX_SPARE_MSR_VFIFO_ARB_SEL	(1 << 10)	/* undocumented */
 #define MSR_LX_SPARE_MSR_WM_LPEN_OVRD	(1 << 9)	/* undocumented */
 #define MSR_LX_SPARE_MSR_LOAD_WM_LPEN_M	(1 << 8)	/* undocumented */
 #define MSR_LX_SPARE_MSR_DIS_INIT_V_PRI	(1 << 7)	/* undocumented */
 #define MSR_LX_SPARE_MSR_DIS_VIFO_WM	(1 << 6)
 #define MSR_LX_SPARE_MSR_DIS_CWD_CHECK	(1 << 5)	/* undocumented */
 #define MSR_LX_SPARE_MSR_PIX8_PAN_FIX	(1 << 4)	/* undocumented */
 #define MSR_LX_SPARE_MSR_FIRST_REQ_MASK	(1 << 1)	/* undocumented */

 #endif
	/* Geode LX framebuffer driver
	*
	* Copyright (C) 2006-2007, Advanced Micro Devices,Inc.
	* Copyright (c) 2008 Andres Salomon <dilinger@debian.org>
	*
	* 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.
	*/
	#ifndef _LXFB_H_
	#define _LXFB_H_

	#include <linux/fb.h>

	#define GP_REG_COUNT (0x7c / 4)
	#define DC_REG_COUNT (0xf0 / 4)
	#define VP_REG_COUNT (0x158 / 8)
	#define FP_REG_COUNT (0x60 / 8)

	#define DC_PAL_COUNT 0x104
	#define DC_HFILT_COUNT 0x100
	#define DC_VFILT_COUNT 0x100
	#define VP_COEFF_SIZE 0x1000
	#define VP_PAL_COUNT 0x100

	#define OUTPUT_CRT 0x01
	#define OUTPUT_PANEL 0x02

	struct lxfb_par {
	int output;

	void __iomem *gp_regs;
	void __iomem *dc_regs;
	void __iomem *vp_regs;
	#ifdef CONFIG_PM
	int powered_down;

	/* register state, for power mgmt functionality */
	struct {
	uint64_t padsel;
	uint64_t dotpll;
	uint64_t dfglcfg;
	uint64_t dcspare;
	} msr;

	uint32_t gp[GP_REG_COUNT];
	uint32_t dc[DC_REG_COUNT];
	uint64_t vp[VP_REG_COUNT];
	uint64_t fp[FP_REG_COUNT];

	uint32_t dc_pal[DC_PAL_COUNT];
	uint32_t vp_pal[VP_PAL_COUNT];
	uint32_t hcoeff[DC_HFILT_COUNT * 2];
	uint32_t vcoeff[DC_VFILT_COUNT];
	uint32_t vp_coeff[VP_COEFF_SIZE / 4];
	#endif
	};

	static inline unsigned int lx_get_pitch(unsigned int xres, int bpp)
	{
	return (((xres * (bpp >> 3)) + 7) & ~7);
	}

	void lx_set_mode(struct fb_info *);
	unsigned int lx_framebuffer_size(void);
	int lx_blank_display(struct fb_info *, int);
	void lx_set_palette_reg(struct fb_info *, unsigned int, unsigned int,
	unsigned int, unsigned int);

	#ifdef CONFIG_PM
	int lx_powerdown(struct fb_info *info);
	int lx_powerup(struct fb_info *info);
	#endif


	/* Graphics Processor registers (table 6-29 from the data book) */
	enum gp_registers {
	GP_DST_OFFSET = 0,
	GP_SRC_OFFSET,
	GP_STRIDE,
	GP_WID_HEIGHT,

	GP_SRC_COLOR_FG,
	GP_SRC_COLOR_BG,
	GP_PAT_COLOR_0,
	GP_PAT_COLOR_1,

	GP_PAT_COLOR_2,
	GP_PAT_COLOR_3,
	GP_PAT_COLOR_4,
	GP_PAT_COLOR_5,

	GP_PAT_DATA_0,
	GP_PAT_DATA_1,
	GP_RASTER_MODE,
	GP_VECTOR_MODE,

	GP_BLT_MODE,
	GP_BLT_STATUS,
	GP_HST_SRC,
	GP_BASE_OFFSET,

	GP_CMD_TOP,
	GP_CMD_BOT,
	GP_CMD_READ,
	GP_CMD_WRITE,

	GP_CH3_OFFSET,
	GP_CH3_MODE_STR,
	GP_CH3_WIDHI,
	GP_CH3_HSRC,

	GP_LUT_INDEX,
	GP_LUT_DATA,
	GP_INT_CNTRL, /* 0x78 */
	};

	#define GP_BLT_STATUS_CE (1 << 4) /* cmd buf empty */
	#define GP_BLT_STATUS_PB (1 << 0) /* primitive busy */


	/* Display Controller registers (table 6-47 from the data book) */
	enum dc_registers {
	DC_UNLOCK = 0,
	DC_GENERAL_CFG,
	DC_DISPLAY_CFG,
	DC_ARB_CFG,

	DC_FB_ST_OFFSET,
	DC_CB_ST_OFFSET,
	DC_CURS_ST_OFFSET,
	DC_RSVD_0,

	DC_VID_Y_ST_OFFSET,
	DC_VID_U_ST_OFFSET,
	DC_VID_V_ST_OFFSET,
	DC_DV_TOP,

	DC_LINE_SIZE,
	DC_GFX_PITCH,
	DC_VID_YUV_PITCH,
	DC_RSVD_1,

	DC_H_ACTIVE_TIMING,
	DC_H_BLANK_TIMING,
	DC_H_SYNC_TIMING,
	DC_RSVD_2,

	DC_V_ACTIVE_TIMING,
	DC_V_BLANK_TIMING,
	DC_V_SYNC_TIMING,
	DC_FB_ACTIVE,

	DC_CURSOR_X,
	DC_CURSOR_Y,
	DC_RSVD_3,
	DC_LINE_CNT,

	DC_PAL_ADDRESS,
	DC_PAL_DATA,
	DC_DFIFO_DIAG,
	DC_CFIFO_DIAG,

	DC_VID_DS_DELTA,
	DC_GLIU0_MEM_OFFSET,
	DC_DV_CTL,
	DC_DV_ACCESS,

	DC_GFX_SCALE,
	DC_IRQ_FILT_CTL,
	DC_FILT_COEFF1,
	DC_FILT_COEFF2,

	DC_VBI_EVEN_CTL,
	DC_VBI_ODD_CTL,
	DC_VBI_HOR,
	DC_VBI_LN_ODD,

	DC_VBI_LN_EVEN,
	DC_VBI_PITCH,
	DC_CLR_KEY,
	DC_CLR_KEY_MASK,

	DC_CLR_KEY_X,
	DC_CLR_KEY_Y,
	DC_IRQ,
	DC_RSVD_4,

	DC_RSVD_5,
	DC_GENLK_CTL,
	DC_VID_EVEN_Y_ST_OFFSET,
	DC_VID_EVEN_U_ST_OFFSET,

	DC_VID_EVEN_V_ST_OFFSET,
	DC_V_ACTIVE_EVEN_TIMING,
	DC_V_BLANK_EVEN_TIMING,
	DC_V_SYNC_EVEN_TIMING, /* 0xec */
	};

	#define DC_UNLOCK_LOCK 0x00000000
	#define DC_UNLOCK_UNLOCK 0x00004758 /* magic value */

	#define DC_GENERAL_CFG_FDTY (1 << 17)
	#define DC_GENERAL_CFG_DFHPEL_SHIFT (12)
	#define DC_GENERAL_CFG_DFHPSL_SHIFT (8)
	#define DC_GENERAL_CFG_VGAE (1 << 7)
	#define DC_GENERAL_CFG_DECE (1 << 6)
	#define DC_GENERAL_CFG_CMPE (1 << 5)
	#define DC_GENERAL_CFG_VIDE (1 << 3)
	#define DC_GENERAL_CFG_DFLE (1 << 0)

	#define DC_DISPLAY_CFG_VISL (1 << 27)
	#define DC_DISPLAY_CFG_PALB (1 << 25)
	#define DC_DISPLAY_CFG_DCEN (1 << 24)
	#define DC_DISPLAY_CFG_DISP_MODE_24BPP (1 << 9)
	#define DC_DISPLAY_CFG_DISP_MODE_16BPP (1 << 8)
	#define DC_DISPLAY_CFG_DISP_MODE_8BPP (0)
	#define DC_DISPLAY_CFG_TRUP (1 << 6)
	#define DC_DISPLAY_CFG_VDEN (1 << 4)
	#define DC_DISPLAY_CFG_GDEN (1 << 3)
	#define DC_DISPLAY_CFG_TGEN (1 << 0)

	#define DC_DV_TOP_DV_TOP_EN (1 << 0)

	#define DC_DV_CTL_DV_LINE_SIZE ((1 << 10) \| (1 << 11))
	#define DC_DV_CTL_DV_LINE_SIZE_1K (0)
	#define DC_DV_CTL_DV_LINE_SIZE_2K (1 << 10)
	#define DC_DV_CTL_DV_LINE_SIZE_4K (1 << 11)
	#define DC_DV_CTL_DV_LINE_SIZE_8K ((1 << 10) \| (1 << 11))
	#define DC_DV_CTL_CLEAR_DV_RAM (1 << 0)

	#define DC_IRQ_FILT_CTL_H_FILT_SEL (1 << 10)

	#define DC_CLR_KEY_CLR_KEY_EN (1 << 24)

	#define DC_IRQ_VIP_VSYNC_IRQ_STATUS (1 << 21) /* undocumented? */
	#define DC_IRQ_STATUS (1 << 20) /* undocumented? */
	#define DC_IRQ_VIP_VSYNC_LOSS_IRQ_MASK (1 << 1)
	#define DC_IRQ_MASK (1 << 0)

	#define DC_GENLK_CTL_FLICK_SEL_MASK (0x0F << 28)
	#define DC_GENLK_CTL_ALPHA_FLICK_EN (1 << 25)
	#define DC_GENLK_CTL_FLICK_EN (1 << 24)
	#define DC_GENLK_CTL_GENLK_EN (1 << 18)


	/*
	* Video Processor registers (table 6-71).
	* There is space for 64 bit values, but we never use more than the
	* lower 32 bits. The actual register save/restore code only bothers
	* to restore those 32 bits.
	*/
	enum vp_registers {
	VP_VCFG = 0,
	VP_DCFG,

	VP_VX,
	VP_VY,

	VP_SCL,
	VP_VCK,

	VP_VCM,
	VP_PAR,

	VP_PDR,
	VP_SLR,

	VP_MISC,
	VP_CCS,

	VP_VYS,
	VP_VXS,

	VP_RSVD_0,
	VP_VDC,

	VP_RSVD_1,
	VP_CRC,

	VP_CRC32,
	VP_VDE,

	VP_CCK,
	VP_CCM,

	VP_CC1,
	VP_CC2,

	VP_A1X,
	VP_A1Y,

	VP_A1C,
	VP_A1T,

	VP_A2X,
	VP_A2Y,

	VP_A2C,
	VP_A2T,

	VP_A3X,
	VP_A3Y,

	VP_A3C,
	VP_A3T,

	VP_VRR,
	VP_AWT,

	VP_VTM,
	VP_VYE,

	VP_A1YE,
	VP_A2YE,

	VP_A3YE, /* 0x150 */

	VP_VCR = 0x1000, /* 0x1000 - 0x1fff */
	};

	#define VP_VCFG_VID_EN (1 << 0)

	#define VP_DCFG_GV_GAM (1 << 21)
	#define VP_DCFG_PWR_SEQ_DELAY ((1 << 17) \| (1 << 18) \| (1 << 19))
	#define VP_DCFG_PWR_SEQ_DELAY_DEFAULT (1 << 19) /* undocumented */
	#define VP_DCFG_CRT_SYNC_SKW ((1 << 14) \| (1 << 15) \| (1 << 16))
	#define VP_DCFG_CRT_SYNC_SKW_DEFAULT (1 << 16)
	#define VP_DCFG_CRT_VSYNC_POL (1 << 9)
	#define VP_DCFG_CRT_HSYNC_POL (1 << 8)
	#define VP_DCFG_DAC_BL_EN (1 << 3)
	#define VP_DCFG_VSYNC_EN (1 << 2)
	#define VP_DCFG_HSYNC_EN (1 << 1)
	#define VP_DCFG_CRT_EN (1 << 0)

	#define VP_MISC_APWRDN (1 << 11)
	#define VP_MISC_DACPWRDN (1 << 10)
	#define VP_MISC_BYP_BOTH (1 << 0)


	/*
	* Flat Panel registers (table 6-71).
	* Also 64 bit registers; see above note about 32-bit handling.
	*/

	/* we're actually in the VP register space, starting at address 0x400 */
	#define VP_FP_START 0x400

	enum fp_registers {
	FP_PT1 = 0,
	FP_PT2,

	FP_PM,
	FP_DFC,

	FP_RSVD_0,
	FP_RSVD_1,

	FP_RSVD_2,
	FP_RSVD_3,

	FP_RSVD_4,
	FP_DCA,

	FP_DMD,
	FP_CRC, /* 0x458 */
	};

	#define FP_PT2_HSP (1 << 22)
	#define FP_PT2_VSP (1 << 23)
	#define FP_PT2_SCRC (1 << 27) /* shfclk free */

	#define FP_PM_P (1 << 24) /* panel power ctl */
	#define FP_PM_PANEL_PWR_UP (1 << 3) /* r/o */
	#define FP_PM_PANEL_PWR_DOWN (1 << 2) /* r/o */
	#define FP_PM_PANEL_OFF (1 << 1) /* r/o */
	#define FP_PM_PANEL_ON (1 << 0) /* r/o */

	#define FP_DFC_BC ((1 << 4) \| (1 << 5) \| (1 << 6))


	/* register access functions */

	static inline uint32_t read_gp(struct lxfb_par *par, int reg)
	{
	return readl(par->gp_regs + 4*reg);
	}

	static inline void write_gp(struct lxfb_par *par, int reg, uint32_t val)
	{
	writel(val, par->gp_regs + 4*reg);
	}

	static inline uint32_t read_dc(struct lxfb_par *par, int reg)
	{
	return readl(par->dc_regs + 4*reg);
	}

	static inline void write_dc(struct lxfb_par *par, int reg, uint32_t val)
	{
	writel(val, par->dc_regs + 4*reg);
	}

	static inline uint32_t read_vp(struct lxfb_par *par, int reg)
	{
	return readl(par->vp_regs + 8*reg);
	}

	static inline void write_vp(struct lxfb_par *par, int reg, uint32_t val)
	{
	writel(val, par->vp_regs + 8*reg);
	}

	static inline uint32_t read_fp(struct lxfb_par *par, int reg)
	{
	return readl(par->vp_regs + 8*reg + VP_FP_START);
	}

	static inline void write_fp(struct lxfb_par *par, int reg, uint32_t val)
	{
	writel(val, par->vp_regs + 8*reg + VP_FP_START);
	}


	/* MSRs are defined in linux/cs5535.h; their bitfields are here */

	#define MSR_GLCP_DOTPLL_LOCK (1 << 25) /* r/o */
	#define MSR_GLCP_DOTPLL_HALFPIX (1 << 24)
	#define MSR_GLCP_DOTPLL_BYPASS (1 << 15)
	#define MSR_GLCP_DOTPLL_DOTRESET (1 << 0)

	/* note: this is actually the VP's GLD_MSR_CONFIG */
	#define MSR_LX_GLD_MSR_CONFIG_FMT ((1 << 3) \| (1 << 4) \| (1 << 5))
	#define MSR_LX_GLD_MSR_CONFIG_FMT_FP (1 << 3)
	#define MSR_LX_GLD_MSR_CONFIG_FMT_CRT (0)
	#define MSR_LX_GLD_MSR_CONFIG_FPC (1 << 15) /* FP and CRT */

	#define MSR_LX_MSR_PADSEL_TFT_SEL_LOW 0xDFFFFFFF /* ??? */
	#define MSR_LX_MSR_PADSEL_TFT_SEL_HIGH 0x0000003F /* ??? */

	#define MSR_LX_SPARE_MSR_DIS_CFIFO_HGO (1 << 11) /* undocumented */
	#define MSR_LX_SPARE_MSR_VFIFO_ARB_SEL (1 << 10) /* undocumented */
	#define MSR_LX_SPARE_MSR_WM_LPEN_OVRD (1 << 9) /* undocumented */
	#define MSR_LX_SPARE_MSR_LOAD_WM_LPEN_M (1 << 8) /* undocumented */
	#define MSR_LX_SPARE_MSR_DIS_INIT_V_PRI (1 << 7) /* undocumented */
	#define MSR_LX_SPARE_MSR_DIS_VIFO_WM (1 << 6)
	#define MSR_LX_SPARE_MSR_DIS_CWD_CHECK (1 << 5) /* undocumented */
	#define MSR_LX_SPARE_MSR_PIX8_PAN_FIX (1 << 4) /* undocumented */
	#define MSR_LX_SPARE_MSR_FIRST_REQ_MASK (1 << 1) /* undocumented */

	#endif