LXR linux/drivers/video/fbdev/geode/lxfb.h

   1/* Geode LX framebuffer driver
   2 *
   3 * Copyright (C) 2006-2007, Advanced Micro Devices,Inc.
   4 * Copyright (c) 2008  Andres Salomon <dilinger@debian.org>
   5 *
   6 * This program is free software; you can redistribute it and/or modify it
   7 * under the terms of the GNU General Public License as published by the
   8 * Free Software Foundation; either version 2 of the License, or (at your
   9 * option) any later version.
  10 */
  11#ifndef _LXFB_H_
  12#define _LXFB_H_
  13
  14#include <linux/fb.h>
  15
  16#define GP_REG_COUNT    (0x7c / 4)
  17#define DC_REG_COUNT    (0xf0 / 4)
  18#define VP_REG_COUNT    (0x158 / 8)
  19#define FP_REG_COUNT    (0x60 / 8)
  20
  21#define DC_PAL_COUNT    0x104
  22#define DC_HFILT_COUNT  0x100
  23#define DC_VFILT_COUNT  0x100
  24#define VP_COEFF_SIZE   0x1000
  25#define VP_PAL_COUNT    0x100
  26
  27#define OUTPUT_CRT   0x01
  28#define OUTPUT_PANEL 0x02
  29
  30struct lxfb_par {
  31        int output;
  32
  33        void __iomem *gp_regs;
  34        void __iomem *dc_regs;
  35        void __iomem *vp_regs;
  36#ifdef CONFIG_PM
  37        int powered_down;
  38
  39        /* register state, for power mgmt functionality */
  40        struct {
  41                uint64_t padsel;
  42                uint64_t dotpll;
  43                uint64_t dfglcfg;
  44                uint64_t dcspare;
  45        } msr;
  46
  47        uint32_t gp[GP_REG_COUNT];
  48        uint32_t dc[DC_REG_COUNT];
  49        uint64_t vp[VP_REG_COUNT];
  50        uint64_t fp[FP_REG_COUNT];
  51
  52        uint32_t dc_pal[DC_PAL_COUNT];
  53        uint32_t vp_pal[VP_PAL_COUNT];
  54        uint32_t hcoeff[DC_HFILT_COUNT * 2];
  55        uint32_t vcoeff[DC_VFILT_COUNT];
  56        uint32_t vp_coeff[VP_COEFF_SIZE / 4];
  57#endif
  58};
  59
  60static inline unsigned int lx_get_pitch(unsigned int xres, int bpp)
  61{
  62        return (((xres * (bpp >> 3)) + 7) & ~7);
  63}
  64
  65void lx_set_mode(struct fb_info *);
  66unsigned int lx_framebuffer_size(void);
  67int lx_blank_display(struct fb_info *, int);
  68void lx_set_palette_reg(struct fb_info *, unsigned int, unsigned int,
  69                        unsigned int, unsigned int);
  70
  71#ifdef CONFIG_PM
  72int lx_powerdown(struct fb_info *info);
  73int lx_powerup(struct fb_info *info);
  74#endif
  75
  76
  77/* Graphics Processor registers (table 6-29 from the data book) */
  78enum gp_registers {
  79        GP_DST_OFFSET = 0,
  80        GP_SRC_OFFSET,
  81        GP_STRIDE,
  82        GP_WID_HEIGHT,
  83
  84        GP_SRC_COLOR_FG,
  85        GP_SRC_COLOR_BG,
  86        GP_PAT_COLOR_0,
  87        GP_PAT_COLOR_1,
  88
  89        GP_PAT_COLOR_2,
  90        GP_PAT_COLOR_3,
  91        GP_PAT_COLOR_4,
  92        GP_PAT_COLOR_5,
  93
  94        GP_PAT_DATA_0,
  95        GP_PAT_DATA_1,
  96        GP_RASTER_MODE,
  97        GP_VECTOR_MODE,
  98
  99        GP_BLT_MODE,
 100        GP_BLT_STATUS,
 101        GP_HST_SRC,
 102        GP_BASE_OFFSET,
 103
 104        GP_CMD_TOP,
 105        GP_CMD_BOT,
 106        GP_CMD_READ,
 107        GP_CMD_WRITE,
 108
 109        GP_CH3_OFFSET,
 110        GP_CH3_MODE_STR,
 111        GP_CH3_WIDHI,
 112        GP_CH3_HSRC,
 113
 114        GP_LUT_INDEX,
 115        GP_LUT_DATA,
 116        GP_INT_CNTRL, /* 0x78 */
 117};
 118
 119#define GP_BLT_STATUS_CE                (1 << 4)        /* cmd buf empty */
 120#define GP_BLT_STATUS_PB                (1 << 0)        /* primitive busy */
 121
 122
 123/* Display Controller registers (table 6-47 from the data book) */
 124enum dc_registers {
 125        DC_UNLOCK = 0,
 126        DC_GENERAL_CFG,
 127        DC_DISPLAY_CFG,
 128        DC_ARB_CFG,
 129
 130        DC_FB_ST_OFFSET,
 131        DC_CB_ST_OFFSET,
 132        DC_CURS_ST_OFFSET,
 133        DC_RSVD_0,
 134
 135        DC_VID_Y_ST_OFFSET,
 136        DC_VID_U_ST_OFFSET,
 137        DC_VID_V_ST_OFFSET,
 138        DC_DV_TOP,
 139
 140        DC_LINE_SIZE,
 141        DC_GFX_PITCH,
 142        DC_VID_YUV_PITCH,
 143        DC_RSVD_1,
 144
 145        DC_H_ACTIVE_TIMING,
 146        DC_H_BLANK_TIMING,
 147        DC_H_SYNC_TIMING,
 148        DC_RSVD_2,
 149
 150        DC_V_ACTIVE_TIMING,
 151        DC_V_BLANK_TIMING,
 152        DC_V_SYNC_TIMING,
 153        DC_FB_ACTIVE,
 154
 155        DC_CURSOR_X,
 156        DC_CURSOR_Y,
 157        DC_RSVD_3,
 158        DC_LINE_CNT,
 159
 160        DC_PAL_ADDRESS,
 161        DC_PAL_DATA,
 162        DC_DFIFO_DIAG,
 163        DC_CFIFO_DIAG,
 164
 165        DC_VID_DS_DELTA,
 166        DC_GLIU0_MEM_OFFSET,
 167        DC_DV_CTL,
 168        DC_DV_ACCESS,
 169
 170        DC_GFX_SCALE,
 171        DC_IRQ_FILT_CTL,
 172        DC_FILT_COEFF1,
 173        DC_FILT_COEFF2,
 174
 175        DC_VBI_EVEN_CTL,
 176        DC_VBI_ODD_CTL,
 177        DC_VBI_HOR,
 178        DC_VBI_LN_ODD,
 179
 180        DC_VBI_LN_EVEN,
 181        DC_VBI_PITCH,
 182        DC_CLR_KEY,
 183        DC_CLR_KEY_MASK,
 184
 185        DC_CLR_KEY_X,
 186        DC_CLR_KEY_Y,
 187        DC_IRQ,
 188        DC_RSVD_4,
 189
 190        DC_RSVD_5,
 191        DC_GENLK_CTL,
 192        DC_VID_EVEN_Y_ST_OFFSET,
 193        DC_VID_EVEN_U_ST_OFFSET,
 194
 195        DC_VID_EVEN_V_ST_OFFSET,
 196        DC_V_ACTIVE_EVEN_TIMING,
 197        DC_V_BLANK_EVEN_TIMING,
 198        DC_V_SYNC_EVEN_TIMING,  /* 0xec */
 199};
 200
 201#define DC_UNLOCK_LOCK                  0x00000000
 202#define DC_UNLOCK_UNLOCK                0x00004758      /* magic value */
 203
 204#define DC_GENERAL_CFG_FDTY             (1 << 17)
 205#define DC_GENERAL_CFG_DFHPEL_SHIFT     (12)
 206#define DC_GENERAL_CFG_DFHPSL_SHIFT     (8)
 207#define DC_GENERAL_CFG_VGAE             (1 << 7)
 208#define DC_GENERAL_CFG_DECE             (1 << 6)
 209#define DC_GENERAL_CFG_CMPE             (1 << 5)
 210#define DC_GENERAL_CFG_VIDE             (1 << 3)
 211#define DC_GENERAL_CFG_DFLE             (1 << 0)
 212
 213#define DC_DISPLAY_CFG_VISL             (1 << 27)
 214#define DC_DISPLAY_CFG_PALB             (1 << 25)
 215#define DC_DISPLAY_CFG_DCEN             (1 << 24)
 216#define DC_DISPLAY_CFG_DISP_MODE_24BPP  (1 << 9)
 217#define DC_DISPLAY_CFG_DISP_MODE_16BPP  (1 << 8)
 218#define DC_DISPLAY_CFG_DISP_MODE_8BPP   (0)
 219#define DC_DISPLAY_CFG_TRUP             (1 << 6)
 220#define DC_DISPLAY_CFG_VDEN             (1 << 4)
 221#define DC_DISPLAY_CFG_GDEN             (1 << 3)
 222#define DC_DISPLAY_CFG_TGEN             (1 << 0)
 223
 224#define DC_DV_TOP_DV_TOP_EN             (1 << 0)
 225
 226#define DC_DV_CTL_DV_LINE_SIZE          ((1 << 10) | (1 << 11))
 227#define DC_DV_CTL_DV_LINE_SIZE_1K       (0)
 228#define DC_DV_CTL_DV_LINE_SIZE_2K       (1 << 10)
 229#define DC_DV_CTL_DV_LINE_SIZE_4K       (1 << 11)
 230#define DC_DV_CTL_DV_LINE_SIZE_8K       ((1 << 10) | (1 << 11))
 231#define DC_DV_CTL_CLEAR_DV_RAM          (1 << 0)
 232
 233#define DC_IRQ_FILT_CTL_H_FILT_SEL      (1 << 10)
 234
 235#define DC_CLR_KEY_CLR_KEY_EN           (1 << 24)
 236
 237#define DC_IRQ_VIP_VSYNC_IRQ_STATUS     (1 << 21)       /* undocumented? */
 238#define DC_IRQ_STATUS                   (1 << 20)       /* undocumented? */
 239#define DC_IRQ_VIP_VSYNC_LOSS_IRQ_MASK  (1 << 1)
 240#define DC_IRQ_MASK                     (1 << 0)
 241
 242#define DC_GENLK_CTL_FLICK_SEL_MASK     (0x0F << 28)
 243#define DC_GENLK_CTL_ALPHA_FLICK_EN     (1 << 25)
 244#define DC_GENLK_CTL_FLICK_EN           (1 << 24)
 245#define DC_GENLK_CTL_GENLK_EN           (1 << 18)
 246
 247
 248/*
 249 * Video Processor registers (table 6-71).
 250 * There is space for 64 bit values, but we never use more than the
 251 * lower 32 bits.  The actual register save/restore code only bothers
 252 * to restore those 32 bits.
 253 */
 254enum vp_registers {
 255        VP_VCFG = 0,
 256        VP_DCFG,
 257
 258        VP_VX,
 259        VP_VY,
 260
 261        VP_SCL,
 262        VP_VCK,
 263
 264        VP_VCM,
 265        VP_PAR,
 266
 267        VP_PDR,
 268        VP_SLR,
 269
 270        VP_MISC,
 271        VP_CCS,
 272
 273        VP_VYS,
 274        VP_VXS,
 275
 276        VP_RSVD_0,
 277        VP_VDC,
 278
 279        VP_RSVD_1,
 280        VP_CRC,
 281
 282        VP_CRC32,
 283        VP_VDE,
 284
 285        VP_CCK,
 286        VP_CCM,
 287
 288        VP_CC1,
 289        VP_CC2,
 290
 291        VP_A1X,
 292        VP_A1Y,
 293
 294        VP_A1C,
 295        VP_A1T,
 296
 297        VP_A2X,
 298        VP_A2Y,
 299
 300        VP_A2C,
 301        VP_A2T,
 302
 303        VP_A3X,
 304        VP_A3Y,
 305
 306        VP_A3C,
 307        VP_A3T,
 308
 309        VP_VRR,
 310        VP_AWT,
 311
 312        VP_VTM,
 313        VP_VYE,
 314
 315        VP_A1YE,
 316        VP_A2YE,
 317
 318        VP_A3YE,        /* 0x150 */
 319
 320        VP_VCR = 0x1000, /* 0x1000 - 0x1fff */
 321};
 322
 323#define VP_VCFG_VID_EN                  (1 << 0)
 324
 325#define VP_DCFG_GV_GAM                  (1 << 21)
 326#define VP_DCFG_PWR_SEQ_DELAY           ((1 << 17) | (1 << 18) | (1 << 19))
 327#define VP_DCFG_PWR_SEQ_DELAY_DEFAULT   (1 << 19)       /* undocumented */
 328#define VP_DCFG_CRT_SYNC_SKW            ((1 << 14) | (1 << 15) | (1 << 16))
 329#define VP_DCFG_CRT_SYNC_SKW_DEFAULT    (1 << 16)
 330#define VP_DCFG_CRT_VSYNC_POL           (1 << 9)
 331#define VP_DCFG_CRT_HSYNC_POL           (1 << 8)
 332#define VP_DCFG_DAC_BL_EN               (1 << 3)
 333#define VP_DCFG_VSYNC_EN                (1 << 2)
 334#define VP_DCFG_HSYNC_EN                (1 << 1)
 335#define VP_DCFG_CRT_EN                  (1 << 0)
 336
 337#define VP_MISC_APWRDN                  (1 << 11)
 338#define VP_MISC_DACPWRDN                (1 << 10)
 339#define VP_MISC_BYP_BOTH                (1 << 0)
 340
 341
 342/*
 343 * Flat Panel registers (table 6-71).
 344 * Also 64 bit registers; see above note about 32-bit handling.
 345 */
 346
 347/* we're actually in the VP register space, starting at address 0x400 */
 348#define VP_FP_START     0x400
 349
 350enum fp_registers {
 351        FP_PT1 = 0,
 352        FP_PT2,
 353
 354        FP_PM,
 355        FP_DFC,
 356
 357        FP_RSVD_0,
 358        FP_RSVD_1,
 359
 360        FP_RSVD_2,
 361        FP_RSVD_3,
 362
 363        FP_RSVD_4,
 364        FP_DCA,
 365
 366        FP_DMD,
 367        FP_CRC, /* 0x458 */
 368};
 369
 370#define FP_PT2_HSP                      (1 << 22)
 371#define FP_PT2_VSP                      (1 << 23)
 372#define FP_PT2_SCRC                     (1 << 27)       /* shfclk free */
 373
 374#define FP_PM_P                         (1 << 24)       /* panel power ctl */
 375#define FP_PM_PANEL_PWR_UP              (1 << 3)        /* r/o */
 376#define FP_PM_PANEL_PWR_DOWN            (1 << 2)        /* r/o */
 377#define FP_PM_PANEL_OFF                 (1 << 1)        /* r/o */
 378#define FP_PM_PANEL_ON                  (1 << 0)        /* r/o */
 379
 380#define FP_DFC_BC                       ((1 << 4) | (1 << 5) | (1 << 6))
 381
 382
 383/* register access functions */
 384
 385static inline uint32_t read_gp(struct lxfb_par *par, int reg)
 386{
 387        return readl(par->gp_regs + 4*reg);
 388}
 389
 390static inline void write_gp(struct lxfb_par *par, int reg, uint32_t val)
 391{
 392        writel(val, par->gp_regs + 4*reg);
 393}
 394
 395static inline uint32_t read_dc(struct lxfb_par *par, int reg)
 396{
 397        return readl(par->dc_regs + 4*reg);
 398}
 399
 400static inline void write_dc(struct lxfb_par *par, int reg, uint32_t val)
 401{
 402        writel(val, par->dc_regs + 4*reg);
 403}
 404
 405static inline uint32_t read_vp(struct lxfb_par *par, int reg)
 406{
 407        return readl(par->vp_regs + 8*reg);
 408}
 409
 410static inline void write_vp(struct lxfb_par *par, int reg, uint32_t val)
 411{
 412        writel(val, par->vp_regs + 8*reg);
 413}
 414
 415static inline uint32_t read_fp(struct lxfb_par *par, int reg)
 416{
 417        return readl(par->vp_regs + 8*reg + VP_FP_START);
 418}
 419
 420static inline void write_fp(struct lxfb_par *par, int reg, uint32_t val)
 421{
 422        writel(val, par->vp_regs + 8*reg + VP_FP_START);
 423}
 424
 425
 426/* MSRs are defined in linux/cs5535.h; their bitfields are here */
 427
 428#define MSR_GLCP_DOTPLL_LOCK            (1 << 25)       /* r/o */
 429#define MSR_GLCP_DOTPLL_HALFPIX         (1 << 24)
 430#define MSR_GLCP_DOTPLL_BYPASS          (1 << 15)
 431#define MSR_GLCP_DOTPLL_DOTRESET        (1 << 0)
 432
 433/* note: this is actually the VP's GLD_MSR_CONFIG */
 434#define MSR_LX_GLD_MSR_CONFIG_FMT       ((1 << 3) | (1 << 4) | (1 << 5))
 435#define MSR_LX_GLD_MSR_CONFIG_FMT_FP    (1 << 3)
 436#define MSR_LX_GLD_MSR_CONFIG_FMT_CRT   (0)
 437#define MSR_LX_GLD_MSR_CONFIG_FPC       (1 << 15)       /* FP *and* CRT */
 438
 439#define MSR_LX_MSR_PADSEL_TFT_SEL_LOW   0xDFFFFFFF      /* ??? */
 440#define MSR_LX_MSR_PADSEL_TFT_SEL_HIGH  0x0000003F      /* ??? */
 441
 442#define MSR_LX_SPARE_MSR_DIS_CFIFO_HGO  (1 << 11)       /* undocumented */
 443#define MSR_LX_SPARE_MSR_VFIFO_ARB_SEL  (1 << 10)       /* undocumented */
 444#define MSR_LX_SPARE_MSR_WM_LPEN_OVRD   (1 << 9)        /* undocumented */
 445#define MSR_LX_SPARE_MSR_LOAD_WM_LPEN_M (1 << 8)        /* undocumented */
 446#define MSR_LX_SPARE_MSR_DIS_INIT_V_PRI (1 << 7)        /* undocumented */
 447#define MSR_LX_SPARE_MSR_DIS_VIFO_WM    (1 << 6)
 448#define MSR_LX_SPARE_MSR_DIS_CWD_CHECK  (1 << 5)        /* undocumented */
 449#define MSR_LX_SPARE_MSR_PIX8_PAN_FIX   (1 << 4)        /* undocumented */
 450#define MSR_LX_SPARE_MSR_FIRST_REQ_MASK (1 << 1)        /* undocumented */
 451
 452#endif
 453