2 * Copyright (C) 2008 Andres Salomon <dilinger@debian.org>
4 * Geode GX2 header information
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
16 #define GP_REG_COUNT (0x50 / 4)
17 #define DC_REG_COUNT (0x90 / 4)
18 #define VP_REG_COUNT (0x138 / 8)
19 #define FP_REG_COUNT (0x68 / 8)
21 #define DC_PAL_COUNT 0x104
25 void __iomem *dc_regs;
26 void __iomem *vid_regs;
27 void __iomem *gp_regs;
31 /* register state, for power management functionality */
37 uint32_t gp[GP_REG_COUNT];
38 uint32_t dc[DC_REG_COUNT];
39 uint64_t vp[VP_REG_COUNT];
40 uint64_t fp[FP_REG_COUNT];
42 uint32_t pal[DC_PAL_COUNT];
46 unsigned int gx_frame_buffer_size(void);
47 int gx_line_delta(int xres, int bpp);
48 void gx_set_mode(struct fb_info *info);
49 void gx_set_hw_palette_reg(struct fb_info *info, unsigned regno,
50 unsigned red, unsigned green, unsigned blue);
52 void gx_set_dclk_frequency(struct fb_info *info);
53 void gx_configure_display(struct fb_info *info);
54 int gx_blank_display(struct fb_info *info, int blank_mode);
57 int gx_powerdown(struct fb_info *info);
58 int gx_powerup(struct fb_info *info);
62 /* Graphics Processor registers (table 6-23 from the data book) */
87 GP_BASE_OFFSET, /* 0x4c */
90 #define GP_BLT_STATUS_BLT_PENDING (1 << 2)
91 #define GP_BLT_STATUS_BLT_BUSY (1 << 0)
94 /* Display Controller registers (table 6-38 from the data book) */
139 DC_DV_ACC, /* 0x8c */
142 #define DC_UNLOCK_LOCK 0x00000000
143 #define DC_UNLOCK_UNLOCK 0x00004758 /* magic value */
145 #define DC_GENERAL_CFG_YUVM (1 << 20)
146 #define DC_GENERAL_CFG_VDSE (1 << 19)
147 #define DC_GENERAL_CFG_DFHPEL_SHIFT 12
148 #define DC_GENERAL_CFG_DFHPSL_SHIFT 8
149 #define DC_GENERAL_CFG_DECE (1 << 6)
150 #define DC_GENERAL_CFG_CMPE (1 << 5)
151 #define DC_GENERAL_CFG_VIDE (1 << 3)
152 #define DC_GENERAL_CFG_ICNE (1 << 2)
153 #define DC_GENERAL_CFG_CURE (1 << 1)
154 #define DC_GENERAL_CFG_DFLE (1 << 0)
156 #define DC_DISPLAY_CFG_A20M (1 << 31)
157 #define DC_DISPLAY_CFG_A18M (1 << 30)
158 #define DC_DISPLAY_CFG_PALB (1 << 25)
159 #define DC_DISPLAY_CFG_DISP_MODE_24BPP (1 << 9)
160 #define DC_DISPLAY_CFG_DISP_MODE_16BPP (1 << 8)
161 #define DC_DISPLAY_CFG_DISP_MODE_8BPP (0)
162 #define DC_DISPLAY_CFG_VDEN (1 << 4)
163 #define DC_DISPLAY_CFG_GDEN (1 << 3)
164 #define DC_DISPLAY_CFG_TGEN (1 << 0)
168 * Video Processor registers (table 6-54).
169 * There is space for 64 bit values, but we never use more than the
170 * lower 32 bits. The actual register save/restore code only bothers
171 * to restore those 32 bits.
234 #define VP_VCFG_VID_EN (1 << 0)
236 #define VP_DCFG_DAC_VREF (1 << 26)
237 #define VP_DCFG_GV_GAM (1 << 21)
238 #define VP_DCFG_VG_CK (1 << 20)
239 #define VP_DCFG_CRT_SYNC_SKW_DEFAULT (1 << 16)
240 #define VP_DCFG_CRT_SYNC_SKW ((1 << 14) | (1 << 15) | (1 << 16))
241 #define VP_DCFG_CRT_VSYNC_POL (1 << 9)
242 #define VP_DCFG_CRT_HSYNC_POL (1 << 8)
243 #define VP_DCFG_FP_DATA_EN (1 << 7) /* undocumented */
244 #define VP_DCFG_FP_PWR_EN (1 << 6) /* undocumented */
245 #define VP_DCFG_DAC_BL_EN (1 << 3)
246 #define VP_DCFG_VSYNC_EN (1 << 2)
247 #define VP_DCFG_HSYNC_EN (1 << 1)
248 #define VP_DCFG_CRT_EN (1 << 0)
250 #define VP_MISC_GAM_EN (1 << 0)
251 #define VP_MISC_DACPWRDN (1 << 10)
252 #define VP_MISC_APWRDN (1 << 11)
256 * Flat Panel registers (table 6-55).
257 * Also 64 bit registers; see above note about 32-bit handling.
260 /* we're actually in the VP register space, starting at address 0x400 */
261 #define VP_FP_START 0x400
285 #define FP_PT1_VSIZE_SHIFT 16 /* undocumented? */
286 #define FP_PT1_VSIZE_MASK 0x7FF0000 /* undocumented? */
288 #define FP_PT2_HSP (1 << 22)
289 #define FP_PT2_VSP (1 << 23)
291 #define FP_PM_P (1 << 24) /* panel power on */
292 #define FP_PM_PANEL_PWR_UP (1 << 3) /* r/o */
293 #define FP_PM_PANEL_PWR_DOWN (1 << 2) /* r/o */
294 #define FP_PM_PANEL_OFF (1 << 1) /* r/o */
295 #define FP_PM_PANEL_ON (1 << 0) /* r/o */
297 #define FP_DFC_NFI ((1 << 4) | (1 << 5) | (1 << 6))
300 /* register access functions */
302 static inline uint32_t read_gp(struct gxfb_par *par, int reg)
304 return readl(par->gp_regs + 4*reg);
307 static inline void write_gp(struct gxfb_par *par, int reg, uint32_t val)
309 writel(val, par->gp_regs + 4*reg);
312 static inline uint32_t read_dc(struct gxfb_par *par, int reg)
314 return readl(par->dc_regs + 4*reg);
317 static inline void write_dc(struct gxfb_par *par, int reg, uint32_t val)
319 writel(val, par->dc_regs + 4*reg);
322 static inline uint32_t read_vp(struct gxfb_par *par, int reg)
324 return readl(par->vid_regs + 8*reg);
327 static inline void write_vp(struct gxfb_par *par, int reg, uint32_t val)
329 writel(val, par->vid_regs + 8*reg);
332 static inline uint32_t read_fp(struct gxfb_par *par, int reg)
334 return readl(par->vid_regs + 8*reg + VP_FP_START);
337 static inline void write_fp(struct gxfb_par *par, int reg, uint32_t val)
339 writel(val, par->vid_regs + 8*reg + VP_FP_START);
343 /* MSRs are defined in asm/geode.h; their bitfields are here */
345 #define MSR_GLCP_SYS_RSTPLL_DOTPOSTDIV3 (1 << 3)
346 #define MSR_GLCP_SYS_RSTPLL_DOTPREMULT2 (1 << 2)
347 #define MSR_GLCP_SYS_RSTPLL_DOTPREDIV2 (1 << 1)
349 #define MSR_GLCP_DOTPLL_LOCK (1 << 25) /* r/o */
350 #define MSR_GLCP_DOTPLL_BYPASS (1 << 15)
351 #define MSR_GLCP_DOTPLL_DOTRESET (1 << 0)
353 #define MSR_GX_MSR_PADSEL_MASK 0x3FFFFFFF /* undocumented? */
354 #define MSR_GX_MSR_PADSEL_TFT 0x1FFFFFFF /* undocumented? */
356 #define MSR_GX_GLD_MSR_CONFIG_FP (1 << 3)