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