1 /* 2 * i740fb - framebuffer driver for Intel740 3 * Copyright (c) 2011 Ondrej Zary 4 * 5 * Based on old i740fb driver (c) 2001-2002 Andrey Ulanov <drey@rt.mipt.ru> 6 * which was partially based on: 7 * VGA 16-color framebuffer driver (c) 1999 Ben Pfaff <pfaffben@debian.org> 8 * and Petr Vandrovec <VANDROVE@vc.cvut.cz> 9 * i740 driver from XFree86 (c) 1998-1999 Precision Insight, Inc., Cedar Park, 10 * Texas. 11 * i740fb by Patrick LERDA, v0.9 12 */ 13 14 #include <linux/module.h> 15 #include <linux/kernel.h> 16 #include <linux/errno.h> 17 #include <linux/string.h> 18 #include <linux/mm.h> 19 #include <linux/slab.h> 20 #include <linux/delay.h> 21 #include <linux/fb.h> 22 #include <linux/init.h> 23 #include <linux/pci.h> 24 #include <linux/pci_ids.h> 25 #include <linux/i2c.h> 26 #include <linux/i2c-algo-bit.h> 27 #include <linux/console.h> 28 #include <video/vga.h> 29 30 #include "i740_reg.h" 31 32 static char *mode_option; 33 static int mtrr = 1; 34 35 struct i740fb_par { 36 unsigned char __iomem *regs; 37 bool has_sgram; 38 int wc_cookie; 39 bool ddc_registered; 40 struct i2c_adapter ddc_adapter; 41 struct i2c_algo_bit_data ddc_algo; 42 u32 pseudo_palette[16]; 43 struct mutex open_lock; 44 unsigned int ref_count; 45 46 u8 crtc[VGA_CRT_C]; 47 u8 atc[VGA_ATT_C]; 48 u8 gdc[VGA_GFX_C]; 49 u8 seq[VGA_SEQ_C]; 50 u8 misc; 51 u8 vss; 52 53 /* i740 specific registers */ 54 u8 display_cntl; 55 u8 pixelpipe_cfg0; 56 u8 pixelpipe_cfg1; 57 u8 pixelpipe_cfg2; 58 u8 video_clk2_m; 59 u8 video_clk2_n; 60 u8 video_clk2_mn_msbs; 61 u8 video_clk2_div_sel; 62 u8 pll_cntl; 63 u8 address_mapping; 64 u8 io_cntl; 65 u8 bitblt_cntl; 66 u8 ext_vert_total; 67 u8 ext_vert_disp_end; 68 u8 ext_vert_sync_start; 69 u8 ext_vert_blank_start; 70 u8 ext_horiz_total; 71 u8 ext_horiz_blank; 72 u8 ext_offset; 73 u8 interlace_cntl; 74 u32 lmi_fifo_watermark; 75 u8 ext_start_addr; 76 u8 ext_start_addr_hi; 77 }; 78 79 #define DACSPEED8 203 80 #define DACSPEED16 163 81 #define DACSPEED24_SG 136 82 #define DACSPEED24_SD 128 83 #define DACSPEED32 86 84 85 static struct fb_fix_screeninfo i740fb_fix = { 86 .id = "i740fb", 87 .type = FB_TYPE_PACKED_PIXELS, 88 .visual = FB_VISUAL_TRUECOLOR, 89 .xpanstep = 8, 90 .ypanstep = 1, 91 .accel = FB_ACCEL_NONE, 92 }; 93 94 static inline void i740outb(struct i740fb_par *par, u16 port, u8 val) 95 { 96 vga_mm_w(par->regs, port, val); 97 } 98 static inline u8 i740inb(struct i740fb_par *par, u16 port) 99 { 100 return vga_mm_r(par->regs, port); 101 } 102 static inline void i740outreg(struct i740fb_par *par, u16 port, u8 reg, u8 val) 103 { 104 vga_mm_w_fast(par->regs, port, reg, val); 105 } 106 static inline u8 i740inreg(struct i740fb_par *par, u16 port, u8 reg) 107 { 108 vga_mm_w(par->regs, port, reg); 109 return vga_mm_r(par->regs, port+1); 110 } 111 static inline void i740outreg_mask(struct i740fb_par *par, u16 port, u8 reg, 112 u8 val, u8 mask) 113 { 114 vga_mm_w_fast(par->regs, port, reg, (val & mask) 115 | (i740inreg(par, port, reg) & ~mask)); 116 } 117 118 #define REG_DDC_DRIVE 0x62 119 #define REG_DDC_STATE 0x63 120 #define DDC_SCL (1 << 3) 121 #define DDC_SDA (1 << 2) 122 123 static void i740fb_ddc_setscl(void *data, int val) 124 { 125 struct i740fb_par *par = data; 126 127 i740outreg_mask(par, XRX, REG_DDC_DRIVE, DDC_SCL, DDC_SCL); 128 i740outreg_mask(par, XRX, REG_DDC_STATE, val ? DDC_SCL : 0, DDC_SCL); 129 } 130 131 static void i740fb_ddc_setsda(void *data, int val) 132 { 133 struct i740fb_par *par = data; 134 135 i740outreg_mask(par, XRX, REG_DDC_DRIVE, DDC_SDA, DDC_SDA); 136 i740outreg_mask(par, XRX, REG_DDC_STATE, val ? DDC_SDA : 0, DDC_SDA); 137 } 138 139 static int i740fb_ddc_getscl(void *data) 140 { 141 struct i740fb_par *par = data; 142 143 i740outreg_mask(par, XRX, REG_DDC_DRIVE, 0, DDC_SCL); 144 145 return !!(i740inreg(par, XRX, REG_DDC_STATE) & DDC_SCL); 146 } 147 148 static int i740fb_ddc_getsda(void *data) 149 { 150 struct i740fb_par *par = data; 151 152 i740outreg_mask(par, XRX, REG_DDC_DRIVE, 0, DDC_SDA); 153 154 return !!(i740inreg(par, XRX, REG_DDC_STATE) & DDC_SDA); 155 } 156 157 static int i740fb_setup_ddc_bus(struct fb_info *info) 158 { 159 struct i740fb_par *par = info->par; 160 161 strlcpy(par->ddc_adapter.name, info->fix.id, 162 sizeof(par->ddc_adapter.name)); 163 par->ddc_adapter.owner = THIS_MODULE; 164 par->ddc_adapter.class = I2C_CLASS_DDC; 165 par->ddc_adapter.algo_data = &par->ddc_algo; 166 par->ddc_adapter.dev.parent = info->device; 167 par->ddc_algo.setsda = i740fb_ddc_setsda; 168 par->ddc_algo.setscl = i740fb_ddc_setscl; 169 par->ddc_algo.getsda = i740fb_ddc_getsda; 170 par->ddc_algo.getscl = i740fb_ddc_getscl; 171 par->ddc_algo.udelay = 10; 172 par->ddc_algo.timeout = 20; 173 par->ddc_algo.data = par; 174 175 i2c_set_adapdata(&par->ddc_adapter, par); 176 177 return i2c_bit_add_bus(&par->ddc_adapter); 178 } 179 180 static int i740fb_open(struct fb_info *info, int user) 181 { 182 struct i740fb_par *par = info->par; 183 184 mutex_lock(&(par->open_lock)); 185 par->ref_count++; 186 mutex_unlock(&(par->open_lock)); 187 188 return 0; 189 } 190 191 static int i740fb_release(struct fb_info *info, int user) 192 { 193 struct i740fb_par *par = info->par; 194 195 mutex_lock(&(par->open_lock)); 196 if (par->ref_count == 0) { 197 fb_err(info, "release called with zero refcount\n"); 198 mutex_unlock(&(par->open_lock)); 199 return -EINVAL; 200 } 201 202 par->ref_count--; 203 mutex_unlock(&(par->open_lock)); 204 205 return 0; 206 } 207 208 static u32 i740_calc_fifo(struct i740fb_par *par, u32 freq, int bpp) 209 { 210 /* 211 * Would like to calculate these values automatically, but a generic 212 * algorithm does not seem possible. Note: These FIFO water mark 213 * values were tested on several cards and seem to eliminate the 214 * all of the snow and vertical banding, but fine adjustments will 215 * probably be required for other cards. 216 */ 217 218 u32 wm; 219 220 switch (bpp) { 221 case 8: 222 if (freq > 200) 223 wm = 0x18120000; 224 else if (freq > 175) 225 wm = 0x16110000; 226 else if (freq > 135) 227 wm = 0x120E0000; 228 else 229 wm = 0x100D0000; 230 break; 231 case 15: 232 case 16: 233 if (par->has_sgram) { 234 if (freq > 140) 235 wm = 0x2C1D0000; 236 else if (freq > 120) 237 wm = 0x2C180000; 238 else if (freq > 100) 239 wm = 0x24160000; 240 else if (freq > 90) 241 wm = 0x18120000; 242 else if (freq > 50) 243 wm = 0x16110000; 244 else if (freq > 32) 245 wm = 0x13100000; 246 else 247 wm = 0x120E0000; 248 } else { 249 if (freq > 160) 250 wm = 0x28200000; 251 else if (freq > 140) 252 wm = 0x2A1E0000; 253 else if (freq > 130) 254 wm = 0x2B1A0000; 255 else if (freq > 120) 256 wm = 0x2C180000; 257 else if (freq > 100) 258 wm = 0x24180000; 259 else if (freq > 90) 260 wm = 0x18120000; 261 else if (freq > 50) 262 wm = 0x16110000; 263 else if (freq > 32) 264 wm = 0x13100000; 265 else 266 wm = 0x120E0000; 267 } 268 break; 269 case 24: 270 if (par->has_sgram) { 271 if (freq > 130) 272 wm = 0x31200000; 273 else if (freq > 120) 274 wm = 0x2E200000; 275 else if (freq > 100) 276 wm = 0x2C1D0000; 277 else if (freq > 80) 278 wm = 0x25180000; 279 else if (freq > 64) 280 wm = 0x24160000; 281 else if (freq > 49) 282 wm = 0x18120000; 283 else if (freq > 32) 284 wm = 0x16110000; 285 else 286 wm = 0x13100000; 287 } else { 288 if (freq > 120) 289 wm = 0x311F0000; 290 else if (freq > 100) 291 wm = 0x2C1D0000; 292 else if (freq > 80) 293 wm = 0x25180000; 294 else if (freq > 64) 295 wm = 0x24160000; 296 else if (freq > 49) 297 wm = 0x18120000; 298 else if (freq > 32) 299 wm = 0x16110000; 300 else 301 wm = 0x13100000; 302 } 303 break; 304 case 32: 305 if (par->has_sgram) { 306 if (freq > 80) 307 wm = 0x2A200000; 308 else if (freq > 60) 309 wm = 0x281A0000; 310 else if (freq > 49) 311 wm = 0x25180000; 312 else if (freq > 32) 313 wm = 0x18120000; 314 else 315 wm = 0x16110000; 316 } else { 317 if (freq > 80) 318 wm = 0x29200000; 319 else if (freq > 60) 320 wm = 0x281A0000; 321 else if (freq > 49) 322 wm = 0x25180000; 323 else if (freq > 32) 324 wm = 0x18120000; 325 else 326 wm = 0x16110000; 327 } 328 break; 329 } 330 331 return wm; 332 } 333 334 /* clock calculation from i740fb by Patrick LERDA */ 335 336 #define I740_RFREQ 1000000 337 #define TARGET_MAX_N 30 338 #define I740_FFIX (1 << 8) 339 #define I740_RFREQ_FIX (I740_RFREQ / I740_FFIX) 340 #define I740_REF_FREQ (6667 * I740_FFIX / 100) /* 66.67 MHz */ 341 #define I740_MAX_VCO_FREQ (450 * I740_FFIX) /* 450 MHz */ 342 343 static void i740_calc_vclk(u32 freq, struct i740fb_par *par) 344 { 345 const u32 err_max = freq / (200 * I740_RFREQ / I740_FFIX); 346 const u32 err_target = freq / (1000 * I740_RFREQ / I740_FFIX); 347 u32 err_best = 512 * I740_FFIX; 348 u32 f_err, f_vco; 349 int m_best = 0, n_best = 0, p_best = 0; 350 int m, n; 351 352 p_best = min(15, ilog2(I740_MAX_VCO_FREQ / (freq / I740_RFREQ_FIX))); 353 f_vco = (freq * (1 << p_best)) / I740_RFREQ_FIX; 354 freq = freq / I740_RFREQ_FIX; 355 356 n = 2; 357 do { 358 n++; 359 m = ((f_vco * n) / I740_REF_FREQ + 2) / 4; 360 361 if (m < 3) 362 m = 3; 363 364 { 365 u32 f_out = (((m * I740_REF_FREQ * 4) 366 / n) + ((1 << p_best) / 2)) / (1 << p_best); 367 368 f_err = (freq - f_out); 369 370 if (abs(f_err) < err_max) { 371 m_best = m; 372 n_best = n; 373 err_best = f_err; 374 } 375 } 376 } while ((abs(f_err) >= err_target) && 377 ((n <= TARGET_MAX_N) || (abs(err_best) > err_max))); 378 379 if (abs(f_err) < err_target) { 380 m_best = m; 381 n_best = n; 382 } 383 384 par->video_clk2_m = (m_best - 2) & 0xFF; 385 par->video_clk2_n = (n_best - 2) & 0xFF; 386 par->video_clk2_mn_msbs = ((((n_best - 2) >> 4) & VCO_N_MSBS) 387 | (((m_best - 2) >> 8) & VCO_M_MSBS)); 388 par->video_clk2_div_sel = ((p_best << 4) | REF_DIV_1); 389 } 390 391 static int i740fb_decode_var(const struct fb_var_screeninfo *var, 392 struct i740fb_par *par, struct fb_info *info) 393 { 394 /* 395 * Get the video params out of 'var'. 396 * If a value doesn't fit, round it up, if it's too big, return -EINVAL. 397 */ 398 399 u32 xres, right, hslen, left, xtotal; 400 u32 yres, lower, vslen, upper, ytotal; 401 u32 vxres, xoffset, vyres, yoffset; 402 u32 bpp, base, dacspeed24, mem; 403 u8 r7; 404 int i; 405 406 dev_dbg(info->device, "decode_var: xres: %i, yres: %i, xres_v: %i, xres_v: %i\n", 407 var->xres, var->yres, var->xres_virtual, var->xres_virtual); 408 dev_dbg(info->device, " xoff: %i, yoff: %i, bpp: %i, graysc: %i\n", 409 var->xoffset, var->yoffset, var->bits_per_pixel, 410 var->grayscale); 411 dev_dbg(info->device, " activate: %i, nonstd: %i, vmode: %i\n", 412 var->activate, var->nonstd, var->vmode); 413 dev_dbg(info->device, " pixclock: %i, hsynclen:%i, vsynclen:%i\n", 414 var->pixclock, var->hsync_len, var->vsync_len); 415 dev_dbg(info->device, " left: %i, right: %i, up:%i, lower:%i\n", 416 var->left_margin, var->right_margin, var->upper_margin, 417 var->lower_margin); 418 419 420 bpp = var->bits_per_pixel; 421 switch (bpp) { 422 case 1 ... 8: 423 bpp = 8; 424 if ((1000000 / var->pixclock) > DACSPEED8) { 425 dev_err(info->device, "requested pixclock %i MHz out of range (max. %i MHz at 8bpp)\n", 426 1000000 / var->pixclock, DACSPEED8); 427 return -EINVAL; 428 } 429 break; 430 case 9 ... 15: 431 bpp = 15; 432 case 16: 433 if ((1000000 / var->pixclock) > DACSPEED16) { 434 dev_err(info->device, "requested pixclock %i MHz out of range (max. %i MHz at 15/16bpp)\n", 435 1000000 / var->pixclock, DACSPEED16); 436 return -EINVAL; 437 } 438 break; 439 case 17 ... 24: 440 bpp = 24; 441 dacspeed24 = par->has_sgram ? DACSPEED24_SG : DACSPEED24_SD; 442 if ((1000000 / var->pixclock) > dacspeed24) { 443 dev_err(info->device, "requested pixclock %i MHz out of range (max. %i MHz at 24bpp)\n", 444 1000000 / var->pixclock, dacspeed24); 445 return -EINVAL; 446 } 447 break; 448 case 25 ... 32: 449 bpp = 32; 450 if ((1000000 / var->pixclock) > DACSPEED32) { 451 dev_err(info->device, "requested pixclock %i MHz out of range (max. %i MHz at 32bpp)\n", 452 1000000 / var->pixclock, DACSPEED32); 453 return -EINVAL; 454 } 455 break; 456 default: 457 return -EINVAL; 458 } 459 460 xres = ALIGN(var->xres, 8); 461 vxres = ALIGN(var->xres_virtual, 16); 462 if (vxres < xres) 463 vxres = xres; 464 465 xoffset = ALIGN(var->xoffset, 8); 466 if (xres + xoffset > vxres) 467 xoffset = vxres - xres; 468 469 left = ALIGN(var->left_margin, 8); 470 right = ALIGN(var->right_margin, 8); 471 hslen = ALIGN(var->hsync_len, 8); 472 473 yres = var->yres; 474 vyres = var->yres_virtual; 475 if (yres > vyres) 476 vyres = yres; 477 478 yoffset = var->yoffset; 479 if (yres + yoffset > vyres) 480 yoffset = vyres - yres; 481 482 lower = var->lower_margin; 483 vslen = var->vsync_len; 484 upper = var->upper_margin; 485 486 mem = vxres * vyres * ((bpp + 1) / 8); 487 if (mem > info->screen_size) { 488 dev_err(info->device, "not enough video memory (%d KB requested, %ld KB available)\n", 489 mem >> 10, info->screen_size >> 10); 490 return -ENOMEM; 491 } 492 493 if (yoffset + yres > vyres) 494 yoffset = vyres - yres; 495 496 xtotal = xres + right + hslen + left; 497 ytotal = yres + lower + vslen + upper; 498 499 par->crtc[VGA_CRTC_H_TOTAL] = (xtotal >> 3) - 5; 500 par->crtc[VGA_CRTC_H_DISP] = (xres >> 3) - 1; 501 par->crtc[VGA_CRTC_H_BLANK_START] = ((xres + right) >> 3) - 1; 502 par->crtc[VGA_CRTC_H_SYNC_START] = (xres + right) >> 3; 503 par->crtc[VGA_CRTC_H_SYNC_END] = (((xres + right + hslen) >> 3) & 0x1F) 504 | ((((xres + right + hslen) >> 3) & 0x20) << 2); 505 par->crtc[VGA_CRTC_H_BLANK_END] = ((xres + right + hslen) >> 3 & 0x1F) 506 | 0x80; 507 508 par->crtc[VGA_CRTC_V_TOTAL] = ytotal - 2; 509 510 r7 = 0x10; /* disable linecompare */ 511 if (ytotal & 0x100) 512 r7 |= 0x01; 513 if (ytotal & 0x200) 514 r7 |= 0x20; 515 516 par->crtc[VGA_CRTC_PRESET_ROW] = 0; 517 par->crtc[VGA_CRTC_MAX_SCAN] = 0x40; /* 1 scanline, no linecmp */ 518 if (var->vmode & FB_VMODE_DOUBLE) 519 par->crtc[VGA_CRTC_MAX_SCAN] |= 0x80; 520 par->crtc[VGA_CRTC_CURSOR_START] = 0x00; 521 par->crtc[VGA_CRTC_CURSOR_END] = 0x00; 522 par->crtc[VGA_CRTC_CURSOR_HI] = 0x00; 523 par->crtc[VGA_CRTC_CURSOR_LO] = 0x00; 524 par->crtc[VGA_CRTC_V_DISP_END] = yres-1; 525 if ((yres-1) & 0x100) 526 r7 |= 0x02; 527 if ((yres-1) & 0x200) 528 r7 |= 0x40; 529 530 par->crtc[VGA_CRTC_V_BLANK_START] = yres + lower - 1; 531 par->crtc[VGA_CRTC_V_SYNC_START] = yres + lower - 1; 532 if ((yres + lower - 1) & 0x100) 533 r7 |= 0x0C; 534 if ((yres + lower - 1) & 0x200) { 535 par->crtc[VGA_CRTC_MAX_SCAN] |= 0x20; 536 r7 |= 0x80; 537 } 538 539 /* disabled IRQ */ 540 par->crtc[VGA_CRTC_V_SYNC_END] = 541 ((yres + lower - 1 + vslen) & 0x0F) & ~0x10; 542 /* 0x7F for VGA, but some SVGA chips require all 8 bits to be set */ 543 par->crtc[VGA_CRTC_V_BLANK_END] = (yres + lower - 1 + vslen) & 0xFF; 544 545 par->crtc[VGA_CRTC_UNDERLINE] = 0x00; 546 par->crtc[VGA_CRTC_MODE] = 0xC3 ; 547 par->crtc[VGA_CRTC_LINE_COMPARE] = 0xFF; 548 par->crtc[VGA_CRTC_OVERFLOW] = r7; 549 550 par->vss = 0x00; /* 3DA */ 551 552 for (i = 0x00; i < 0x10; i++) 553 par->atc[i] = i; 554 par->atc[VGA_ATC_MODE] = 0x81; 555 par->atc[VGA_ATC_OVERSCAN] = 0x00; /* 0 for EGA, 0xFF for VGA */ 556 par->atc[VGA_ATC_PLANE_ENABLE] = 0x0F; 557 par->atc[VGA_ATC_COLOR_PAGE] = 0x00; 558 559 par->misc = 0xC3; 560 if (var->sync & FB_SYNC_HOR_HIGH_ACT) 561 par->misc &= ~0x40; 562 if (var->sync & FB_SYNC_VERT_HIGH_ACT) 563 par->misc &= ~0x80; 564 565 par->seq[VGA_SEQ_CLOCK_MODE] = 0x01; 566 par->seq[VGA_SEQ_PLANE_WRITE] = 0x0F; 567 par->seq[VGA_SEQ_CHARACTER_MAP] = 0x00; 568 par->seq[VGA_SEQ_MEMORY_MODE] = 0x06; 569 570 par->gdc[VGA_GFX_SR_VALUE] = 0x00; 571 par->gdc[VGA_GFX_SR_ENABLE] = 0x00; 572 par->gdc[VGA_GFX_COMPARE_VALUE] = 0x00; 573 par->gdc[VGA_GFX_DATA_ROTATE] = 0x00; 574 par->gdc[VGA_GFX_PLANE_READ] = 0; 575 par->gdc[VGA_GFX_MODE] = 0x02; 576 par->gdc[VGA_GFX_MISC] = 0x05; 577 par->gdc[VGA_GFX_COMPARE_MASK] = 0x0F; 578 par->gdc[VGA_GFX_BIT_MASK] = 0xFF; 579 580 base = (yoffset * vxres + (xoffset & ~7)) >> 2; 581 switch (bpp) { 582 case 8: 583 par->crtc[VGA_CRTC_OFFSET] = vxres >> 3; 584 par->ext_offset = vxres >> 11; 585 par->pixelpipe_cfg1 = DISPLAY_8BPP_MODE; 586 par->bitblt_cntl = COLEXP_8BPP; 587 break; 588 case 15: /* 0rrrrrgg gggbbbbb */ 589 case 16: /* rrrrrggg gggbbbbb */ 590 par->pixelpipe_cfg1 = (var->green.length == 6) ? 591 DISPLAY_16BPP_MODE : DISPLAY_15BPP_MODE; 592 par->crtc[VGA_CRTC_OFFSET] = vxres >> 2; 593 par->ext_offset = vxres >> 10; 594 par->bitblt_cntl = COLEXP_16BPP; 595 base *= 2; 596 break; 597 case 24: 598 par->crtc[VGA_CRTC_OFFSET] = (vxres * 3) >> 3; 599 par->ext_offset = (vxres * 3) >> 11; 600 par->pixelpipe_cfg1 = DISPLAY_24BPP_MODE; 601 par->bitblt_cntl = COLEXP_24BPP; 602 base &= 0xFFFFFFFE; /* ...ignore the last bit. */ 603 base *= 3; 604 break; 605 case 32: 606 par->crtc[VGA_CRTC_OFFSET] = vxres >> 1; 607 par->ext_offset = vxres >> 9; 608 par->pixelpipe_cfg1 = DISPLAY_32BPP_MODE; 609 par->bitblt_cntl = COLEXP_RESERVED; /* Unimplemented on i740 */ 610 base *= 4; 611 break; 612 } 613 614 par->crtc[VGA_CRTC_START_LO] = base & 0x000000FF; 615 par->crtc[VGA_CRTC_START_HI] = (base & 0x0000FF00) >> 8; 616 par->ext_start_addr = 617 ((base & 0x003F0000) >> 16) | EXT_START_ADDR_ENABLE; 618 par->ext_start_addr_hi = (base & 0x3FC00000) >> 22; 619 620 par->pixelpipe_cfg0 = DAC_8_BIT; 621 622 par->pixelpipe_cfg2 = DISPLAY_GAMMA_ENABLE | OVERLAY_GAMMA_ENABLE; 623 par->io_cntl = EXTENDED_CRTC_CNTL; 624 par->address_mapping = LINEAR_MODE_ENABLE | PAGE_MAPPING_ENABLE; 625 par->display_cntl = HIRES_MODE; 626 627 /* Set the MCLK freq */ 628 par->pll_cntl = PLL_MEMCLK_100000KHZ; /* 100 MHz -- use as default */ 629 630 /* Calculate the extended CRTC regs */ 631 par->ext_vert_total = (ytotal - 2) >> 8; 632 par->ext_vert_disp_end = (yres - 1) >> 8; 633 par->ext_vert_sync_start = (yres + lower) >> 8; 634 par->ext_vert_blank_start = (yres + lower) >> 8; 635 par->ext_horiz_total = ((xtotal >> 3) - 5) >> 8; 636 par->ext_horiz_blank = (((xres + right) >> 3) & 0x40) >> 6; 637 638 par->interlace_cntl = INTERLACE_DISABLE; 639 640 /* Set the overscan color to 0. (NOTE: This only affects >8bpp mode) */ 641 par->atc[VGA_ATC_OVERSCAN] = 0; 642 643 /* Calculate VCLK that most closely matches the requested dot clock */ 644 i740_calc_vclk((((u32)1e9) / var->pixclock) * (u32)(1e3), par); 645 646 /* Since we program the clocks ourselves, always use VCLK2. */ 647 par->misc |= 0x0C; 648 649 /* Calculate the FIFO Watermark and Burst Length. */ 650 par->lmi_fifo_watermark = 651 i740_calc_fifo(par, 1000000 / var->pixclock, bpp); 652 653 return 0; 654 } 655 656 static int i740fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) 657 { 658 switch (var->bits_per_pixel) { 659 case 8: 660 var->red.offset = var->green.offset = var->blue.offset = 0; 661 var->red.length = var->green.length = var->blue.length = 8; 662 break; 663 case 16: 664 switch (var->green.length) { 665 default: 666 case 5: 667 var->red.offset = 10; 668 var->green.offset = 5; 669 var->blue.offset = 0; 670 var->red.length = 5; 671 var->green.length = 5; 672 var->blue.length = 5; 673 break; 674 case 6: 675 var->red.offset = 11; 676 var->green.offset = 5; 677 var->blue.offset = 0; 678 var->red.length = var->blue.length = 5; 679 break; 680 } 681 break; 682 case 24: 683 var->red.offset = 16; 684 var->green.offset = 8; 685 var->blue.offset = 0; 686 var->red.length = var->green.length = var->blue.length = 8; 687 break; 688 case 32: 689 var->transp.offset = 24; 690 var->red.offset = 16; 691 var->green.offset = 8; 692 var->blue.offset = 0; 693 var->transp.length = 8; 694 var->red.length = var->green.length = var->blue.length = 8; 695 break; 696 default: 697 return -EINVAL; 698 } 699 700 if (var->xres > var->xres_virtual) 701 var->xres_virtual = var->xres; 702 703 if (var->yres > var->yres_virtual) 704 var->yres_virtual = var->yres; 705 706 if (info->monspecs.hfmax && info->monspecs.vfmax && 707 info->monspecs.dclkmax && fb_validate_mode(var, info) < 0) 708 return -EINVAL; 709 710 return 0; 711 } 712 713 static void vga_protect(struct i740fb_par *par) 714 { 715 /* disable the display */ 716 i740outreg_mask(par, VGA_SEQ_I, VGA_SEQ_CLOCK_MODE, 0x20, 0x20); 717 718 i740inb(par, 0x3DA); 719 i740outb(par, VGA_ATT_W, 0x00); /* enable palette access */ 720 } 721 722 static void vga_unprotect(struct i740fb_par *par) 723 { 724 /* reenable display */ 725 i740outreg_mask(par, VGA_SEQ_I, VGA_SEQ_CLOCK_MODE, 0, 0x20); 726 727 i740inb(par, 0x3DA); 728 i740outb(par, VGA_ATT_W, 0x20); /* disable palette access */ 729 } 730 731 static int i740fb_set_par(struct fb_info *info) 732 { 733 struct i740fb_par *par = info->par; 734 u32 itemp; 735 int i; 736 737 i = i740fb_decode_var(&info->var, par, info); 738 if (i) 739 return i; 740 741 memset(info->screen_base, 0, info->screen_size); 742 743 vga_protect(par); 744 745 i740outreg(par, XRX, DRAM_EXT_CNTL, DRAM_REFRESH_DISABLE); 746 747 mdelay(1); 748 749 i740outreg(par, XRX, VCLK2_VCO_M, par->video_clk2_m); 750 i740outreg(par, XRX, VCLK2_VCO_N, par->video_clk2_n); 751 i740outreg(par, XRX, VCLK2_VCO_MN_MSBS, par->video_clk2_mn_msbs); 752 i740outreg(par, XRX, VCLK2_VCO_DIV_SEL, par->video_clk2_div_sel); 753 754 i740outreg_mask(par, XRX, PIXPIPE_CONFIG_0, 755 par->pixelpipe_cfg0 & DAC_8_BIT, 0x80); 756 757 i740inb(par, 0x3DA); 758 i740outb(par, 0x3C0, 0x00); 759 760 /* update misc output register */ 761 i740outb(par, VGA_MIS_W, par->misc | 0x01); 762 763 /* synchronous reset on */ 764 i740outreg(par, VGA_SEQ_I, VGA_SEQ_RESET, 0x01); 765 /* write sequencer registers */ 766 i740outreg(par, VGA_SEQ_I, VGA_SEQ_CLOCK_MODE, 767 par->seq[VGA_SEQ_CLOCK_MODE] | 0x20); 768 for (i = 2; i < VGA_SEQ_C; i++) 769 i740outreg(par, VGA_SEQ_I, i, par->seq[i]); 770 771 /* synchronous reset off */ 772 i740outreg(par, VGA_SEQ_I, VGA_SEQ_RESET, 0x03); 773 774 /* deprotect CRT registers 0-7 */ 775 i740outreg(par, VGA_CRT_IC, VGA_CRTC_V_SYNC_END, 776 par->crtc[VGA_CRTC_V_SYNC_END]); 777 778 /* write CRT registers */ 779 for (i = 0; i < VGA_CRT_C; i++) 780 i740outreg(par, VGA_CRT_IC, i, par->crtc[i]); 781 782 /* write graphics controller registers */ 783 for (i = 0; i < VGA_GFX_C; i++) 784 i740outreg(par, VGA_GFX_I, i, par->gdc[i]); 785 786 /* write attribute controller registers */ 787 for (i = 0; i < VGA_ATT_C; i++) { 788 i740inb(par, VGA_IS1_RC); /* reset flip-flop */ 789 i740outb(par, VGA_ATT_IW, i); 790 i740outb(par, VGA_ATT_IW, par->atc[i]); 791 } 792 793 i740inb(par, VGA_IS1_RC); 794 i740outb(par, VGA_ATT_IW, 0x20); 795 796 i740outreg(par, VGA_CRT_IC, EXT_VERT_TOTAL, par->ext_vert_total); 797 i740outreg(par, VGA_CRT_IC, EXT_VERT_DISPLAY, par->ext_vert_disp_end); 798 i740outreg(par, VGA_CRT_IC, EXT_VERT_SYNC_START, 799 par->ext_vert_sync_start); 800 i740outreg(par, VGA_CRT_IC, EXT_VERT_BLANK_START, 801 par->ext_vert_blank_start); 802 i740outreg(par, VGA_CRT_IC, EXT_HORIZ_TOTAL, par->ext_horiz_total); 803 i740outreg(par, VGA_CRT_IC, EXT_HORIZ_BLANK, par->ext_horiz_blank); 804 i740outreg(par, VGA_CRT_IC, EXT_OFFSET, par->ext_offset); 805 i740outreg(par, VGA_CRT_IC, EXT_START_ADDR_HI, par->ext_start_addr_hi); 806 i740outreg(par, VGA_CRT_IC, EXT_START_ADDR, par->ext_start_addr); 807 808 i740outreg_mask(par, VGA_CRT_IC, INTERLACE_CNTL, 809 par->interlace_cntl, INTERLACE_ENABLE); 810 i740outreg_mask(par, XRX, ADDRESS_MAPPING, par->address_mapping, 0x1F); 811 i740outreg_mask(par, XRX, BITBLT_CNTL, par->bitblt_cntl, COLEXP_MODE); 812 i740outreg_mask(par, XRX, DISPLAY_CNTL, 813 par->display_cntl, VGA_WRAP_MODE | GUI_MODE); 814 i740outreg_mask(par, XRX, PIXPIPE_CONFIG_0, par->pixelpipe_cfg0, 0x9B); 815 i740outreg_mask(par, XRX, PIXPIPE_CONFIG_2, par->pixelpipe_cfg2, 0x0C); 816 817 i740outreg(par, XRX, PLL_CNTL, par->pll_cntl); 818 819 i740outreg_mask(par, XRX, PIXPIPE_CONFIG_1, 820 par->pixelpipe_cfg1, DISPLAY_COLOR_MODE); 821 822 itemp = readl(par->regs + FWATER_BLC); 823 itemp &= ~(LMI_BURST_LENGTH | LMI_FIFO_WATERMARK); 824 itemp |= par->lmi_fifo_watermark; 825 writel(itemp, par->regs + FWATER_BLC); 826 827 i740outreg(par, XRX, DRAM_EXT_CNTL, DRAM_REFRESH_60HZ); 828 829 i740outreg_mask(par, MRX, COL_KEY_CNTL_1, 0, BLANK_DISP_OVERLAY); 830 i740outreg_mask(par, XRX, IO_CTNL, 831 par->io_cntl, EXTENDED_ATTR_CNTL | EXTENDED_CRTC_CNTL); 832 833 if (par->pixelpipe_cfg1 != DISPLAY_8BPP_MODE) { 834 i740outb(par, VGA_PEL_MSK, 0xFF); 835 i740outb(par, VGA_PEL_IW, 0x00); 836 for (i = 0; i < 256; i++) { 837 itemp = (par->pixelpipe_cfg0 & DAC_8_BIT) ? i : i >> 2; 838 i740outb(par, VGA_PEL_D, itemp); 839 i740outb(par, VGA_PEL_D, itemp); 840 i740outb(par, VGA_PEL_D, itemp); 841 } 842 } 843 844 /* Wait for screen to stabilize. */ 845 mdelay(50); 846 vga_unprotect(par); 847 848 info->fix.line_length = 849 info->var.xres_virtual * info->var.bits_per_pixel / 8; 850 if (info->var.bits_per_pixel == 8) 851 info->fix.visual = FB_VISUAL_PSEUDOCOLOR; 852 else 853 info->fix.visual = FB_VISUAL_TRUECOLOR; 854 855 return 0; 856 } 857 858 static int i740fb_setcolreg(unsigned regno, unsigned red, unsigned green, 859 unsigned blue, unsigned transp, 860 struct fb_info *info) 861 { 862 u32 r, g, b; 863 864 dev_dbg(info->device, "setcolreg: regno: %i, red=%d, green=%d, blue=%d, transp=%d, bpp=%d\n", 865 regno, red, green, blue, transp, info->var.bits_per_pixel); 866 867 switch (info->fix.visual) { 868 case FB_VISUAL_PSEUDOCOLOR: 869 if (regno >= 256) 870 return -EINVAL; 871 i740outb(info->par, VGA_PEL_IW, regno); 872 i740outb(info->par, VGA_PEL_D, red >> 8); 873 i740outb(info->par, VGA_PEL_D, green >> 8); 874 i740outb(info->par, VGA_PEL_D, blue >> 8); 875 break; 876 case FB_VISUAL_TRUECOLOR: 877 if (regno >= 16) 878 return -EINVAL; 879 r = (red >> (16 - info->var.red.length)) 880 << info->var.red.offset; 881 b = (blue >> (16 - info->var.blue.length)) 882 << info->var.blue.offset; 883 g = (green >> (16 - info->var.green.length)) 884 << info->var.green.offset; 885 ((u32 *) info->pseudo_palette)[regno] = r | g | b; 886 break; 887 default: 888 return -EINVAL; 889 } 890 891 return 0; 892 } 893 894 static int i740fb_pan_display(struct fb_var_screeninfo *var, 895 struct fb_info *info) 896 { 897 struct i740fb_par *par = info->par; 898 u32 base = (var->yoffset * info->var.xres_virtual 899 + (var->xoffset & ~7)) >> 2; 900 901 dev_dbg(info->device, "pan_display: xoffset: %i yoffset: %i base: %i\n", 902 var->xoffset, var->yoffset, base); 903 904 switch (info->var.bits_per_pixel) { 905 case 8: 906 break; 907 case 15: 908 case 16: 909 base *= 2; 910 break; 911 case 24: 912 /* 913 * The last bit does not seem to have any effect on the start 914 * address register in 24bpp mode, so... 915 */ 916 base &= 0xFFFFFFFE; /* ...ignore the last bit. */ 917 base *= 3; 918 break; 919 case 32: 920 base *= 4; 921 break; 922 } 923 924 par->crtc[VGA_CRTC_START_LO] = base & 0x000000FF; 925 par->crtc[VGA_CRTC_START_HI] = (base & 0x0000FF00) >> 8; 926 par->ext_start_addr_hi = (base & 0x3FC00000) >> 22; 927 par->ext_start_addr = 928 ((base & 0x003F0000) >> 16) | EXT_START_ADDR_ENABLE; 929 930 i740outreg(par, VGA_CRT_IC, VGA_CRTC_START_LO, base & 0x000000FF); 931 i740outreg(par, VGA_CRT_IC, VGA_CRTC_START_HI, 932 (base & 0x0000FF00) >> 8); 933 i740outreg(par, VGA_CRT_IC, EXT_START_ADDR_HI, 934 (base & 0x3FC00000) >> 22); 935 i740outreg(par, VGA_CRT_IC, EXT_START_ADDR, 936 ((base & 0x003F0000) >> 16) | EXT_START_ADDR_ENABLE); 937 938 return 0; 939 } 940 941 static int i740fb_blank(int blank_mode, struct fb_info *info) 942 { 943 struct i740fb_par *par = info->par; 944 945 unsigned char SEQ01; 946 int DPMSSyncSelect; 947 948 switch (blank_mode) { 949 case FB_BLANK_UNBLANK: 950 case FB_BLANK_NORMAL: 951 SEQ01 = 0x00; 952 DPMSSyncSelect = HSYNC_ON | VSYNC_ON; 953 break; 954 case FB_BLANK_VSYNC_SUSPEND: 955 SEQ01 = 0x20; 956 DPMSSyncSelect = HSYNC_ON | VSYNC_OFF; 957 break; 958 case FB_BLANK_HSYNC_SUSPEND: 959 SEQ01 = 0x20; 960 DPMSSyncSelect = HSYNC_OFF | VSYNC_ON; 961 break; 962 case FB_BLANK_POWERDOWN: 963 SEQ01 = 0x20; 964 DPMSSyncSelect = HSYNC_OFF | VSYNC_OFF; 965 break; 966 default: 967 return -EINVAL; 968 } 969 /* Turn the screen on/off */ 970 i740outb(par, SRX, 0x01); 971 SEQ01 |= i740inb(par, SRX + 1) & ~0x20; 972 i740outb(par, SRX, 0x01); 973 i740outb(par, SRX + 1, SEQ01); 974 975 /* Set the DPMS mode */ 976 i740outreg(par, XRX, DPMS_SYNC_SELECT, DPMSSyncSelect); 977 978 /* Let fbcon do a soft blank for us */ 979 return (blank_mode == FB_BLANK_NORMAL) ? 1 : 0; 980 } 981 982 static struct fb_ops i740fb_ops = { 983 .owner = THIS_MODULE, 984 .fb_open = i740fb_open, 985 .fb_release = i740fb_release, 986 .fb_check_var = i740fb_check_var, 987 .fb_set_par = i740fb_set_par, 988 .fb_setcolreg = i740fb_setcolreg, 989 .fb_blank = i740fb_blank, 990 .fb_pan_display = i740fb_pan_display, 991 .fb_fillrect = cfb_fillrect, 992 .fb_copyarea = cfb_copyarea, 993 .fb_imageblit = cfb_imageblit, 994 }; 995 996 /* ------------------------------------------------------------------------- */ 997 998 static int i740fb_probe(struct pci_dev *dev, const struct pci_device_id *ent) 999 { 1000 struct fb_info *info; 1001 struct i740fb_par *par; 1002 int ret, tmp; 1003 bool found = false; 1004 u8 *edid; 1005 1006 info = framebuffer_alloc(sizeof(struct i740fb_par), &(dev->dev)); 1007 if (!info) { 1008 dev_err(&(dev->dev), "cannot allocate framebuffer\n"); 1009 return -ENOMEM; 1010 } 1011 1012 par = info->par; 1013 mutex_init(&par->open_lock); 1014 1015 info->var.activate = FB_ACTIVATE_NOW; 1016 info->var.bits_per_pixel = 8; 1017 info->fbops = &i740fb_ops; 1018 info->pseudo_palette = par->pseudo_palette; 1019 1020 ret = pci_enable_device(dev); 1021 if (ret) { 1022 dev_err(info->device, "cannot enable PCI device\n"); 1023 goto err_enable_device; 1024 } 1025 1026 ret = pci_request_regions(dev, info->fix.id); 1027 if (ret) { 1028 dev_err(info->device, "error requesting regions\n"); 1029 goto err_request_regions; 1030 } 1031 1032 info->screen_base = pci_ioremap_wc_bar(dev, 0); 1033 if (!info->screen_base) { 1034 dev_err(info->device, "error remapping base\n"); 1035 ret = -ENOMEM; 1036 goto err_ioremap_1; 1037 } 1038 1039 par->regs = pci_ioremap_bar(dev, 1); 1040 if (!par->regs) { 1041 dev_err(info->device, "error remapping MMIO\n"); 1042 ret = -ENOMEM; 1043 goto err_ioremap_2; 1044 } 1045 1046 /* detect memory size */ 1047 if ((i740inreg(par, XRX, DRAM_ROW_TYPE) & DRAM_ROW_1) 1048 == DRAM_ROW_1_SDRAM) 1049 i740outb(par, XRX, DRAM_ROW_BNDRY_1); 1050 else 1051 i740outb(par, XRX, DRAM_ROW_BNDRY_0); 1052 info->screen_size = i740inb(par, XRX + 1) * 1024 * 1024; 1053 /* detect memory type */ 1054 tmp = i740inreg(par, XRX, DRAM_ROW_CNTL_LO); 1055 par->has_sgram = !((tmp & DRAM_RAS_TIMING) || 1056 (tmp & DRAM_RAS_PRECHARGE)); 1057 1058 fb_info(info, "Intel740 on %s, %ld KB %s\n", 1059 pci_name(dev), info->screen_size >> 10, 1060 par->has_sgram ? "SGRAM" : "SDRAM"); 1061 1062 info->fix = i740fb_fix; 1063 info->fix.mmio_start = pci_resource_start(dev, 1); 1064 info->fix.mmio_len = pci_resource_len(dev, 1); 1065 info->fix.smem_start = pci_resource_start(dev, 0); 1066 info->fix.smem_len = info->screen_size; 1067 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN; 1068 1069 if (i740fb_setup_ddc_bus(info) == 0) { 1070 par->ddc_registered = true; 1071 edid = fb_ddc_read(&par->ddc_adapter); 1072 if (edid) { 1073 fb_edid_to_monspecs(edid, &info->monspecs); 1074 kfree(edid); 1075 if (!info->monspecs.modedb) 1076 dev_err(info->device, 1077 "error getting mode database\n"); 1078 else { 1079 const struct fb_videomode *m; 1080 1081 fb_videomode_to_modelist( 1082 info->monspecs.modedb, 1083 info->monspecs.modedb_len, 1084 &info->modelist); 1085 m = fb_find_best_display(&info->monspecs, 1086 &info->modelist); 1087 if (m) { 1088 fb_videomode_to_var(&info->var, m); 1089 /* fill all other info->var's fields */ 1090 if (!i740fb_check_var(&info->var, info)) 1091 found = true; 1092 } 1093 } 1094 } 1095 } 1096 1097 if (!mode_option && !found) 1098 mode_option = "640x480-8@60"; 1099 1100 if (mode_option) { 1101 ret = fb_find_mode(&info->var, info, mode_option, 1102 info->monspecs.modedb, 1103 info->monspecs.modedb_len, 1104 NULL, info->var.bits_per_pixel); 1105 if (!ret || ret == 4) { 1106 dev_err(info->device, "mode %s not found\n", 1107 mode_option); 1108 ret = -EINVAL; 1109 } 1110 } 1111 1112 fb_destroy_modedb(info->monspecs.modedb); 1113 info->monspecs.modedb = NULL; 1114 1115 /* maximize virtual vertical size for fast scrolling */ 1116 info->var.yres_virtual = info->fix.smem_len * 8 / 1117 (info->var.bits_per_pixel * info->var.xres_virtual); 1118 1119 if (ret == -EINVAL) 1120 goto err_find_mode; 1121 1122 ret = fb_alloc_cmap(&info->cmap, 256, 0); 1123 if (ret) { 1124 dev_err(info->device, "cannot allocate colormap\n"); 1125 goto err_alloc_cmap; 1126 } 1127 1128 ret = register_framebuffer(info); 1129 if (ret) { 1130 dev_err(info->device, "error registering framebuffer\n"); 1131 goto err_reg_framebuffer; 1132 } 1133 1134 fb_info(info, "%s frame buffer device\n", info->fix.id); 1135 pci_set_drvdata(dev, info); 1136 if (mtrr) 1137 par->wc_cookie = arch_phys_wc_add(info->fix.smem_start, 1138 info->fix.smem_len); 1139 return 0; 1140 1141 err_reg_framebuffer: 1142 fb_dealloc_cmap(&info->cmap); 1143 err_alloc_cmap: 1144 err_find_mode: 1145 if (par->ddc_registered) 1146 i2c_del_adapter(&par->ddc_adapter); 1147 pci_iounmap(dev, par->regs); 1148 err_ioremap_2: 1149 pci_iounmap(dev, info->screen_base); 1150 err_ioremap_1: 1151 pci_release_regions(dev); 1152 err_request_regions: 1153 /* pci_disable_device(dev); */ 1154 err_enable_device: 1155 framebuffer_release(info); 1156 return ret; 1157 } 1158 1159 static void i740fb_remove(struct pci_dev *dev) 1160 { 1161 struct fb_info *info = pci_get_drvdata(dev); 1162 1163 if (info) { 1164 struct i740fb_par *par = info->par; 1165 arch_phys_wc_del(par->wc_cookie); 1166 unregister_framebuffer(info); 1167 fb_dealloc_cmap(&info->cmap); 1168 if (par->ddc_registered) 1169 i2c_del_adapter(&par->ddc_adapter); 1170 pci_iounmap(dev, par->regs); 1171 pci_iounmap(dev, info->screen_base); 1172 pci_release_regions(dev); 1173 /* pci_disable_device(dev); */ 1174 framebuffer_release(info); 1175 } 1176 } 1177 1178 #ifdef CONFIG_PM 1179 static int i740fb_suspend(struct pci_dev *dev, pm_message_t state) 1180 { 1181 struct fb_info *info = pci_get_drvdata(dev); 1182 struct i740fb_par *par = info->par; 1183 1184 /* don't disable console during hibernation and wakeup from it */ 1185 if (state.event == PM_EVENT_FREEZE || state.event == PM_EVENT_PRETHAW) 1186 return 0; 1187 1188 console_lock(); 1189 mutex_lock(&(par->open_lock)); 1190 1191 /* do nothing if framebuffer is not active */ 1192 if (par->ref_count == 0) { 1193 mutex_unlock(&(par->open_lock)); 1194 console_unlock(); 1195 return 0; 1196 } 1197 1198 fb_set_suspend(info, 1); 1199 1200 pci_save_state(dev); 1201 pci_disable_device(dev); 1202 pci_set_power_state(dev, pci_choose_state(dev, state)); 1203 1204 mutex_unlock(&(par->open_lock)); 1205 console_unlock(); 1206 1207 return 0; 1208 } 1209 1210 static int i740fb_resume(struct pci_dev *dev) 1211 { 1212 struct fb_info *info = pci_get_drvdata(dev); 1213 struct i740fb_par *par = info->par; 1214 1215 console_lock(); 1216 mutex_lock(&(par->open_lock)); 1217 1218 if (par->ref_count == 0) 1219 goto fail; 1220 1221 pci_set_power_state(dev, PCI_D0); 1222 pci_restore_state(dev); 1223 if (pci_enable_device(dev)) 1224 goto fail; 1225 1226 i740fb_set_par(info); 1227 fb_set_suspend(info, 0); 1228 1229 fail: 1230 mutex_unlock(&(par->open_lock)); 1231 console_unlock(); 1232 return 0; 1233 } 1234 #else 1235 #define i740fb_suspend NULL 1236 #define i740fb_resume NULL 1237 #endif /* CONFIG_PM */ 1238 1239 #define I740_ID_PCI 0x00d1 1240 #define I740_ID_AGP 0x7800 1241 1242 static const struct pci_device_id i740fb_id_table[] = { 1243 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, I740_ID_PCI) }, 1244 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, I740_ID_AGP) }, 1245 { 0 } 1246 }; 1247 MODULE_DEVICE_TABLE(pci, i740fb_id_table); 1248 1249 static struct pci_driver i740fb_driver = { 1250 .name = "i740fb", 1251 .id_table = i740fb_id_table, 1252 .probe = i740fb_probe, 1253 .remove = i740fb_remove, 1254 .suspend = i740fb_suspend, 1255 .resume = i740fb_resume, 1256 }; 1257 1258 #ifndef MODULE 1259 static int __init i740fb_setup(char *options) 1260 { 1261 char *opt; 1262 1263 if (!options || !*options) 1264 return 0; 1265 1266 while ((opt = strsep(&options, ",")) != NULL) { 1267 if (!*opt) 1268 continue; 1269 else if (!strncmp(opt, "mtrr:", 5)) 1270 mtrr = simple_strtoul(opt + 5, NULL, 0); 1271 else 1272 mode_option = opt; 1273 } 1274 1275 return 0; 1276 } 1277 #endif 1278 1279 static int __init i740fb_init(void) 1280 { 1281 #ifndef MODULE 1282 char *option = NULL; 1283 1284 if (fb_get_options("i740fb", &option)) 1285 return -ENODEV; 1286 i740fb_setup(option); 1287 #endif 1288 1289 return pci_register_driver(&i740fb_driver); 1290 } 1291 1292 static void __exit i740fb_exit(void) 1293 { 1294 pci_unregister_driver(&i740fb_driver); 1295 } 1296 1297 module_init(i740fb_init); 1298 module_exit(i740fb_exit); 1299 1300 MODULE_AUTHOR("(c) 2011 Ondrej Zary <linux@rainbow-software.org>"); 1301 MODULE_LICENSE("GPL"); 1302 MODULE_DESCRIPTION("fbdev driver for Intel740"); 1303 1304 module_param(mode_option, charp, 0444); 1305 MODULE_PARM_DESC(mode_option, "Default video mode ('640x480-8@60', etc)"); 1306 1307 module_param(mtrr, int, 0444); 1308 MODULE_PARM_DESC(mtrr, "Enable write-combining with MTRR (1=enable, 0=disable, default=1)"); 1309