drivers/video/geode/gxfb.h

   1 /*
   2  * Copyright (C) 2008 Andres Salomon <dilinger@debian.org>
   3  *
   4  * Geode GX2 header information
   5  *
   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.
  10  */
  11 #ifndef _GXFB_H_
  12 #define _GXFB_H_
  13
  14 #include <linux/io.h>
  15
  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)
  20
  21 #define DC_PAL_COUNT   0x104
  22
  23 struct gxfb_par {
  24         int enable_crt;
  25         void __iomem *dc_regs;
  26         void __iomem *vid_regs;
  27         void __iomem *gp_regs;
  28 #ifdef CONFIG_PM
  29         int powered_down;
  30
  31         /* register state, for power management functionality */
  32         struct {
  33                 uint64_t padsel;
  34                 uint64_t dotpll;
  35         } msr;
  36
  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];
  41
  42         uint32_t pal[DC_PAL_COUNT];
  43 #endif
  44 };
  45
  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);
  51
  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);
  55
  56 #ifdef CONFIG_PM
  57 int gx_powerdown(struct fb_info *info);
  58 int gx_powerup(struct fb_info *info);
  59 #endif
  60
  61
  62 /* Graphics Processor registers (table 6-23 from the data book) */
  63 enum gp_registers {
  64         GP_DST_OFFSET = 0,
  65         GP_SRC_OFFSET,
  66         GP_STRIDE,
  67         GP_WID_HEIGHT,
  68
  69         GP_SRC_COLOR_FG,
  70         GP_SRC_COLOR_BG,
  71         GP_PAT_COLOR_0,
  72         GP_PAT_COLOR_1,
  73
  74         GP_PAT_COLOR_2,
  75         GP_PAT_COLOR_3,
  76         GP_PAT_COLOR_4,
  77         GP_PAT_COLOR_5,
  78
  79         GP_PAT_DATA_0,
  80         GP_PAT_DATA_1,
  81         GP_RASTER_MODE,
  82         GP_VECTOR_MODE,
  83
  84         GP_BLT_MODE,
  85         GP_BLT_STATUS,
  86         GP_HST_SRC,
  87         GP_BASE_OFFSET, /* 0x4c */
  88 };
  89
  90 #define GP_BLT_STATUS_BLT_PENDING       (1 << 2)
  91 #define GP_BLT_STATUS_BLT_BUSY          (1 << 0)
  92
  93
  94 /* Display Controller registers (table 6-38 from the data book) */
  95 enum dc_registers {
  96         DC_UNLOCK = 0,
  97         DC_GENERAL_CFG,
  98         DC_DISPLAY_CFG,
  99         DC_RSVD_0,
 100
 101         DC_FB_ST_OFFSET,
 102         DC_CB_ST_OFFSET,
 103         DC_CURS_ST_OFFSET,
 104         DC_ICON_ST_OFFSET,
 105
 106         DC_VID_Y_ST_OFFSET,
 107         DC_VID_U_ST_OFFSET,
 108         DC_VID_V_ST_OFFSET,
 109         DC_RSVD_1,
 110
 111         DC_LINE_SIZE,
 112         DC_GFX_PITCH,
 113         DC_VID_YUV_PITCH,
 114         DC_RSVD_2,
 115
 116         DC_H_ACTIVE_TIMING,
 117         DC_H_BLANK_TIMING,
 118         DC_H_SYNC_TIMING,
 119         DC_RSVD_3,
 120
 121         DC_V_ACTIVE_TIMING,
 122         DC_V_BLANK_TIMING,
 123         DC_V_SYNC_TIMING,
 124         DC_RSVD_4,
 125
 126         DC_CURSOR_X,
 127         DC_CURSOR_Y,
 128         DC_ICON_X,
 129         DC_LINE_CNT,
 130
 131         DC_PAL_ADDRESS,
 132         DC_PAL_DATA,
 133         DC_DFIFO_DIAG,
 134         DC_CFIFO_DIAG,
 135
 136         DC_VID_DS_DELTA,
 137         DC_GLIU0_MEM_OFFSET,
 138         DC_RSVD_5,
 139         DC_DV_ACC, /* 0x8c */
 140 };
 141
 142 #define DC_UNLOCK_LOCK                  0x00000000
 143 #define DC_UNLOCK_UNLOCK                0x00004758      /* magic value */
 144
 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)
 155
 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)
 165
 166
 167 /*
 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.
 172  */
 173 enum vp_registers {
 174         VP_VCFG = 0,
 175         VP_DCFG,
 176
 177         VP_VX,
 178         VP_VY,
 179
 180         VP_VS,
 181         VP_VCK,
 182
 183         VP_VCM,
 184         VP_GAR,
 185
 186         VP_GDR,
 187         VP_RSVD_0,
 188
 189         VP_MISC,
 190         VP_CCS,
 191
 192         VP_RSVD_1,
 193         VP_RSVD_2,
 194
 195         VP_RSVD_3,
 196         VP_VDC,
 197
 198         VP_VCO,
 199         VP_CRC,
 200
 201         VP_CRC32,
 202         VP_VDE,
 203
 204         VP_CCK,
 205         VP_CCM,
 206
 207         VP_CC1,
 208         VP_CC2,
 209
 210         VP_A1X,
 211         VP_A1Y,
 212
 213         VP_A1C,
 214         VP_A1T,
 215
 216         VP_A2X,
 217         VP_A2Y,
 218
 219         VP_A2C,
 220         VP_A2T,
 221
 222         VP_A3X,
 223         VP_A3Y,
 224
 225         VP_A3C,
 226         VP_A3T,
 227
 228         VP_VRR,
 229         VP_AWT,
 230
 231         VP_VTM, /* 0x130 */
 232 };
 233
 234 #define VP_VCFG_VID_EN                  (1 << 0)
 235
 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)
 249
 250 #define VP_MISC_GAM_EN                  (1 << 0)
 251 #define VP_MISC_DACPWRDN                (1 << 10)
 252 #define VP_MISC_APWRDN                  (1 << 11)
 253
 254
 255 /*
 256  * Flat Panel registers (table 6-55).
 257  * Also 64 bit registers; see above note about 32-bit handling.
 258  */
 259
 260 /* we're actually in the VP register space, starting at address 0x400 */
 261 #define VP_FP_START             0x400
 262
 263 enum fp_registers {
 264         FP_PT1 = 0,
 265         FP_PT2,
 266
 267         FP_PM,
 268         FP_DFC,
 269
 270         FP_BLFSR,
 271         FP_RLFSR,
 272
 273         FP_FMI,
 274         FP_FMD,
 275
 276         FP_RSVD_0,
 277         FP_DCA,
 278
 279         FP_DMD,
 280         FP_CRC,
 281
 282         FP_FBB, /* 0x460 */
 283 };
 284
 285 #define FP_PT1_VSIZE_SHIFT              16              /* undocumented? */
 286 #define FP_PT1_VSIZE_MASK               0x7FF0000       /* undocumented? */
 287
 288 #define FP_PT2_HSP                      (1 << 22)
 289 #define FP_PT2_VSP                      (1 << 23)
 290
 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 */
 296
 297 #define FP_DFC_NFI                      ((1 << 4) | (1 << 5) | (1 << 6))
 298
 299
 300 /* register access functions */
 301
 302 static inline uint32_t read_gp(struct gxfb_par *par, int reg)
 303 {
 304         return readl(par->gp_regs + 4*reg);
 305 }
 306
 307 static inline void write_gp(struct gxfb_par *par, int reg, uint32_t val)
 308 {
 309         writel(val, par->gp_regs + 4*reg);
 310 }
 311
 312 static inline uint32_t read_dc(struct gxfb_par *par, int reg)
 313 {
 314         return readl(par->dc_regs + 4*reg);
 315 }
 316
 317 static inline void write_dc(struct gxfb_par *par, int reg, uint32_t val)
 318 {
 319         writel(val, par->dc_regs + 4*reg);
 320 }
 321
 322 static inline uint32_t read_vp(struct gxfb_par *par, int reg)
 323 {
 324         return readl(par->vid_regs + 8*reg);
 325 }
 326
 327 static inline void write_vp(struct gxfb_par *par, int reg, uint32_t val)
 328 {
 329         writel(val, par->vid_regs + 8*reg);
 330 }
 331
 332 static inline uint32_t read_fp(struct gxfb_par *par, int reg)
 333 {
 334         return readl(par->vid_regs + 8*reg + VP_FP_START);
 335 }
 336
 337 static inline void write_fp(struct gxfb_par *par, int reg, uint32_t val)
 338 {
 339         writel(val, par->vid_regs + 8*reg + VP_FP_START);
 340 }
 341
 342
 343 /* MSRs are defined in asm/geode.h; their bitfields are here */
 344
 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)
 348
 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)
 352
 353 #define MSR_GX_MSR_PADSEL_MASK          0x3FFFFFFF      /* undocumented? */
 354 #define MSR_GX_MSR_PADSEL_TFT           0x1FFFFFFF      /* undocumented? */
 355
 356 #define MSR_GX_GLD_MSR_CONFIG_FP        (1 << 3)
 357
 358 #endif