drivers/video/fbdev/geode/gxfb.h - linux - Git at Google

 /* SPDX-License-Identifier: GPL-2.0-or-later */
 /*
  * Copyright (C) 2008 Andres Salomon <dilinger@debian.org>
  *
  * Geode GX2 header information
  */
 #ifndef _GXFB_H_
 #define _GXFB_H_

 #include <linux/io.h>

 #define GP_REG_COUNT   (0x50 / 4)
 #define DC_REG_COUNT   (0x90 / 4)
 #define VP_REG_COUNT   (0x138 / 8)
 #define FP_REG_COUNT   (0x68 / 8)

 #define DC_PAL_COUNT   0x104

 struct gxfb_par {
 	int enable_crt;
 	void __iomem *dc_regs;
 	void __iomem *vid_regs;
 	void __iomem *gp_regs;
 #ifdef CONFIG_PM
 	int powered_down;

 	/* register state, for power management functionality */
 	struct {
 		uint64_t padsel;
 		uint64_t dotpll;
 	} 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 pal[DC_PAL_COUNT];
 #endif
 };

 unsigned int gx_frame_buffer_size(void);
 int gx_line_delta(int xres, int bpp);
 void gx_set_mode(struct fb_info *info);
 void gx_set_hw_palette_reg(struct fb_info *info, unsigned regno,
 		unsigned red, unsigned green, unsigned blue);

 void gx_set_dclk_frequency(struct fb_info *info);
 void gx_configure_display(struct fb_info *info);
 int gx_blank_display(struct fb_info *info, int blank_mode);

 #ifdef CONFIG_PM
 int gx_powerdown(struct fb_info *info);
 int gx_powerup(struct fb_info *info);
 #endif


 /* Graphics Processor registers (table 6-23 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, /* 0x4c */
 };

 #define GP_BLT_STATUS_BLT_PENDING	(1 << 2)
 #define GP_BLT_STATUS_BLT_BUSY		(1 << 0)


 /* Display Controller registers (table 6-38 from the data book) */
 enum dc_registers {
 	DC_UNLOCK = 0,
 	DC_GENERAL_CFG,
 	DC_DISPLAY_CFG,
 	DC_RSVD_0,

 	DC_FB_ST_OFFSET,
 	DC_CB_ST_OFFSET,
 	DC_CURS_ST_OFFSET,
 	DC_ICON_ST_OFFSET,

 	DC_VID_Y_ST_OFFSET,
 	DC_VID_U_ST_OFFSET,
 	DC_VID_V_ST_OFFSET,
 	DC_RSVD_1,

 	DC_LINE_SIZE,
 	DC_GFX_PITCH,
 	DC_VID_YUV_PITCH,
 	DC_RSVD_2,

 	DC_H_ACTIVE_TIMING,
 	DC_H_BLANK_TIMING,
 	DC_H_SYNC_TIMING,
 	DC_RSVD_3,

 	DC_V_ACTIVE_TIMING,
 	DC_V_BLANK_TIMING,
 	DC_V_SYNC_TIMING,
 	DC_RSVD_4,

 	DC_CURSOR_X,
 	DC_CURSOR_Y,
 	DC_ICON_X,
 	DC_LINE_CNT,

 	DC_PAL_ADDRESS,
 	DC_PAL_DATA,
 	DC_DFIFO_DIAG,
 	DC_CFIFO_DIAG,

 	DC_VID_DS_DELTA,
 	DC_GLIU0_MEM_OFFSET,
 	DC_RSVD_5,
 	DC_DV_ACC, /* 0x8c */
 };

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

 #define DC_GENERAL_CFG_YUVM		(1 << 20)
 #define DC_GENERAL_CFG_VDSE		(1 << 19)
 #define DC_GENERAL_CFG_DFHPEL_SHIFT	12
 #define DC_GENERAL_CFG_DFHPSL_SHIFT	8
 #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_ICNE		(1 << 2)
 #define DC_GENERAL_CFG_CURE		(1 << 1)
 #define DC_GENERAL_CFG_DFLE		(1 << 0)

 #define DC_DISPLAY_CFG_A20M		(1 << 31)
 #define DC_DISPLAY_CFG_A18M		(1 << 30)
 #define DC_DISPLAY_CFG_PALB		(1 << 25)
 #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_VDEN		(1 << 4)
 #define DC_DISPLAY_CFG_GDEN		(1 << 3)
 #define DC_DISPLAY_CFG_TGEN		(1 << 0)


 /*
  * Video Processor registers (table 6-54).
  * 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_VS,
 	VP_VCK,

 	VP_VCM,
 	VP_GAR,

 	VP_GDR,
 	VP_RSVD_0,

 	VP_MISC,
 	VP_CCS,

 	VP_RSVD_1,
 	VP_RSVD_2,

 	VP_RSVD_3,
 	VP_VDC,

 	VP_VCO,
 	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, /* 0x130 */
 };

 #define VP_VCFG_VID_EN			(1 << 0)

 #define VP_DCFG_DAC_VREF		(1 << 26)
 #define VP_DCFG_GV_GAM			(1 << 21)
 #define VP_DCFG_VG_CK			(1 << 20)
 #define VP_DCFG_CRT_SYNC_SKW_DEFAULT	(1 << 16)
 #define VP_DCFG_CRT_SYNC_SKW		((1 << 14) | (1 << 15) | (1 << 16))
 #define VP_DCFG_CRT_VSYNC_POL		(1 << 9)
 #define VP_DCFG_CRT_HSYNC_POL		(1 << 8)
 #define VP_DCFG_FP_DATA_EN		(1 << 7)	/* undocumented */
 #define VP_DCFG_FP_PWR_EN		(1 << 6)	/* undocumented */
 #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_GAM_EN			(1 << 0)
 #define VP_MISC_DACPWRDN		(1 << 10)
 #define VP_MISC_APWRDN			(1 << 11)


 /*
  * Flat Panel registers (table 6-55).
  * 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_BLFSR,
 	FP_RLFSR,

 	FP_FMI,
 	FP_FMD,

 	FP_RSVD_0,
 	FP_DCA,

 	FP_DMD,
 	FP_CRC,

 	FP_FBB, /* 0x460 */
 };

 #define FP_PT1_VSIZE_SHIFT		16		/* undocumented? */
 #define FP_PT1_VSIZE_MASK		0x7FF0000	/* undocumented? */

 #define FP_PT2_HSP			(1 << 22)
 #define FP_PT2_VSP			(1 << 23)

 #define FP_PM_P				(1 << 24)       /* panel power on */
 #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_NFI			((1 << 4) | (1 << 5) | (1 << 6))


 /* register access functions */

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

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

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

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

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

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

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

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


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

 #define MSR_GLCP_SYS_RSTPLL_DOTPOSTDIV3	(1 << 3)
 #define MSR_GLCP_SYS_RSTPLL_DOTPREMULT2	(1 << 2)
 #define MSR_GLCP_SYS_RSTPLL_DOTPREDIV2	(1 << 1)

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

 #define MSR_GX_MSR_PADSEL_MASK		0x3FFFFFFF	/* undocumented? */
 #define MSR_GX_MSR_PADSEL_TFT		0x1FFFFFFF	/* undocumented? */

 #define MSR_GX_GLD_MSR_CONFIG_FP	(1 << 3)

 #endif
	/* SPDX-License-Identifier: GPL-2.0-or-later */
	/*
	* Copyright (C) 2008 Andres Salomon <dilinger@debian.org>
	*
	* Geode GX2 header information
	*/
	#ifndef _GXFB_H_
	#define _GXFB_H_

	#include <linux/io.h>

	#define GP_REG_COUNT (0x50 / 4)
	#define DC_REG_COUNT (0x90 / 4)
	#define VP_REG_COUNT (0x138 / 8)
	#define FP_REG_COUNT (0x68 / 8)

	#define DC_PAL_COUNT 0x104

	struct gxfb_par {
	int enable_crt;
	void __iomem *dc_regs;
	void __iomem *vid_regs;
	void __iomem *gp_regs;
	#ifdef CONFIG_PM
	int powered_down;

	/* register state, for power management functionality */
	struct {
	uint64_t padsel;
	uint64_t dotpll;
	} 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 pal[DC_PAL_COUNT];
	#endif
	};

	unsigned int gx_frame_buffer_size(void);
	int gx_line_delta(int xres, int bpp);
	void gx_set_mode(struct fb_info *info);
	void gx_set_hw_palette_reg(struct fb_info *info, unsigned regno,
	unsigned red, unsigned green, unsigned blue);

	void gx_set_dclk_frequency(struct fb_info *info);
	void gx_configure_display(struct fb_info *info);
	int gx_blank_display(struct fb_info *info, int blank_mode);

	#ifdef CONFIG_PM
	int gx_powerdown(struct fb_info *info);
	int gx_powerup(struct fb_info *info);
	#endif


	/* Graphics Processor registers (table 6-23 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, /* 0x4c */
	};

	#define GP_BLT_STATUS_BLT_PENDING (1 << 2)
	#define GP_BLT_STATUS_BLT_BUSY (1 << 0)


	/* Display Controller registers (table 6-38 from the data book) */
	enum dc_registers {
	DC_UNLOCK = 0,
	DC_GENERAL_CFG,
	DC_DISPLAY_CFG,
	DC_RSVD_0,

	DC_FB_ST_OFFSET,
	DC_CB_ST_OFFSET,
	DC_CURS_ST_OFFSET,
	DC_ICON_ST_OFFSET,

	DC_VID_Y_ST_OFFSET,
	DC_VID_U_ST_OFFSET,
	DC_VID_V_ST_OFFSET,
	DC_RSVD_1,

	DC_LINE_SIZE,
	DC_GFX_PITCH,
	DC_VID_YUV_PITCH,
	DC_RSVD_2,

	DC_H_ACTIVE_TIMING,
	DC_H_BLANK_TIMING,
	DC_H_SYNC_TIMING,
	DC_RSVD_3,

	DC_V_ACTIVE_TIMING,
	DC_V_BLANK_TIMING,
	DC_V_SYNC_TIMING,
	DC_RSVD_4,

	DC_CURSOR_X,
	DC_CURSOR_Y,
	DC_ICON_X,
	DC_LINE_CNT,

	DC_PAL_ADDRESS,
	DC_PAL_DATA,
	DC_DFIFO_DIAG,
	DC_CFIFO_DIAG,

	DC_VID_DS_DELTA,
	DC_GLIU0_MEM_OFFSET,
	DC_RSVD_5,
	DC_DV_ACC, /* 0x8c */
	};

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

	#define DC_GENERAL_CFG_YUVM (1 << 20)
	#define DC_GENERAL_CFG_VDSE (1 << 19)
	#define DC_GENERAL_CFG_DFHPEL_SHIFT 12
	#define DC_GENERAL_CFG_DFHPSL_SHIFT 8
	#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_ICNE (1 << 2)
	#define DC_GENERAL_CFG_CURE (1 << 1)
	#define DC_GENERAL_CFG_DFLE (1 << 0)

	#define DC_DISPLAY_CFG_A20M (1 << 31)
	#define DC_DISPLAY_CFG_A18M (1 << 30)
	#define DC_DISPLAY_CFG_PALB (1 << 25)
	#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_VDEN (1 << 4)
	#define DC_DISPLAY_CFG_GDEN (1 << 3)
	#define DC_DISPLAY_CFG_TGEN (1 << 0)


	/*
	* Video Processor registers (table 6-54).
	* 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_VS,
	VP_VCK,

	VP_VCM,
	VP_GAR,

	VP_GDR,
	VP_RSVD_0,

	VP_MISC,
	VP_CCS,

	VP_RSVD_1,
	VP_RSVD_2,

	VP_RSVD_3,
	VP_VDC,

	VP_VCO,
	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, /* 0x130 */
	};

	#define VP_VCFG_VID_EN (1 << 0)

	#define VP_DCFG_DAC_VREF (1 << 26)
	#define VP_DCFG_GV_GAM (1 << 21)
	#define VP_DCFG_VG_CK (1 << 20)
	#define VP_DCFG_CRT_SYNC_SKW_DEFAULT (1 << 16)
	#define VP_DCFG_CRT_SYNC_SKW ((1 << 14) \| (1 << 15) \| (1 << 16))
	#define VP_DCFG_CRT_VSYNC_POL (1 << 9)
	#define VP_DCFG_CRT_HSYNC_POL (1 << 8)
	#define VP_DCFG_FP_DATA_EN (1 << 7) /* undocumented */
	#define VP_DCFG_FP_PWR_EN (1 << 6) /* undocumented */
	#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_GAM_EN (1 << 0)
	#define VP_MISC_DACPWRDN (1 << 10)
	#define VP_MISC_APWRDN (1 << 11)


	/*
	* Flat Panel registers (table 6-55).
	* 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_BLFSR,
	FP_RLFSR,

	FP_FMI,
	FP_FMD,

	FP_RSVD_0,
	FP_DCA,

	FP_DMD,
	FP_CRC,

	FP_FBB, /* 0x460 */
	};

	#define FP_PT1_VSIZE_SHIFT 16 /* undocumented? */
	#define FP_PT1_VSIZE_MASK 0x7FF0000 /* undocumented? */

	#define FP_PT2_HSP (1 << 22)
	#define FP_PT2_VSP (1 << 23)

	#define FP_PM_P (1 << 24) /* panel power on */
	#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_NFI ((1 << 4) \| (1 << 5) \| (1 << 6))


	/* register access functions */

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

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

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

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

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

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

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

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


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

	#define MSR_GLCP_SYS_RSTPLL_DOTPOSTDIV3 (1 << 3)
	#define MSR_GLCP_SYS_RSTPLL_DOTPREMULT2 (1 << 2)
	#define MSR_GLCP_SYS_RSTPLL_DOTPREDIV2 (1 << 1)

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

	#define MSR_GX_MSR_PADSEL_MASK 0x3FFFFFFF /* undocumented? */
	#define MSR_GX_MSR_PADSEL_TFT 0x1FFFFFFF /* undocumented? */

	#define MSR_GX_GLD_MSR_CONFIG_FP (1 << 3)

	#endif