1 /* 2 * linux/drivers/video/vt8623fb.c - fbdev driver for 3 * integrated graphic core in VIA VT8623 [CLE266] chipset 4 * 5 * Copyright (c) 2006-2007 Ondrej Zajicek <santiago@crfreenet.org> 6 * 7 * This file is subject to the terms and conditions of the GNU General Public 8 * License. See the file COPYING in the main directory of this archive for 9 * more details. 10 * 11 * Code is based on s3fb, some parts are from David Boucher's viafb 12 * (http://davesdomain.org.uk/viafb/) 13 */ 14 15 #include <linux/aperture.h> 16 #include <linux/module.h> 17 #include <linux/kernel.h> 18 #include <linux/errno.h> 19 #include <linux/string.h> 20 #include <linux/mm.h> 21 #include <linux/tty.h> 22 #include <linux/delay.h> 23 #include <linux/fb.h> 24 #include <linux/svga.h> 25 #include <linux/init.h> 26 #include <linux/pci.h> 27 #include <linux/console.h> /* Why should fb driver call console functions? because console_lock() */ 28 #include <video/vga.h> 29 30 struct vt8623fb_info { 31 char __iomem *mmio_base; 32 int wc_cookie; 33 struct vgastate state; 34 struct mutex open_lock; 35 unsigned int ref_count; 36 u32 pseudo_palette[16]; 37 }; 38 39 40 41 /* ------------------------------------------------------------------------- */ 42 43 static const struct svga_fb_format vt8623fb_formats[] = { 44 { 0, {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, 0, 45 FB_TYPE_TEXT, FB_AUX_TEXT_SVGA_STEP8, FB_VISUAL_PSEUDOCOLOR, 16, 16}, 46 { 4, {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, 0, 47 FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_PSEUDOCOLOR, 16, 16}, 48 { 4, {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, 1, 49 FB_TYPE_INTERLEAVED_PLANES, 1, FB_VISUAL_PSEUDOCOLOR, 16, 16}, 50 { 8, {0, 6, 0}, {0, 6, 0}, {0, 6, 0}, {0, 0, 0}, 0, 51 FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_PSEUDOCOLOR, 8, 8}, 52 /* {16, {10, 5, 0}, {5, 5, 0}, {0, 5, 0}, {0, 0, 0}, 0, 53 FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_TRUECOLOR, 4, 4}, */ 54 {16, {11, 5, 0}, {5, 6, 0}, {0, 5, 0}, {0, 0, 0}, 0, 55 FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_TRUECOLOR, 4, 4}, 56 {32, {16, 8, 0}, {8, 8, 0}, {0, 8, 0}, {0, 0, 0}, 0, 57 FB_TYPE_PACKED_PIXELS, 0, FB_VISUAL_TRUECOLOR, 2, 2}, 58 SVGA_FORMAT_END 59 }; 60 61 static const struct svga_pll vt8623_pll = {2, 127, 2, 7, 0, 3, 62 60000, 300000, 14318}; 63 64 /* CRT timing register sets */ 65 66 static const struct vga_regset vt8623_h_total_regs[] = {{0x00, 0, 7}, {0x36, 3, 3}, VGA_REGSET_END}; 67 static const struct vga_regset vt8623_h_display_regs[] = {{0x01, 0, 7}, VGA_REGSET_END}; 68 static const struct vga_regset vt8623_h_blank_start_regs[] = {{0x02, 0, 7}, VGA_REGSET_END}; 69 static const struct vga_regset vt8623_h_blank_end_regs[] = {{0x03, 0, 4}, {0x05, 7, 7}, {0x33, 5, 5}, VGA_REGSET_END}; 70 static const struct vga_regset vt8623_h_sync_start_regs[] = {{0x04, 0, 7}, {0x33, 4, 4}, VGA_REGSET_END}; 71 static const struct vga_regset vt8623_h_sync_end_regs[] = {{0x05, 0, 4}, VGA_REGSET_END}; 72 73 static const struct vga_regset vt8623_v_total_regs[] = {{0x06, 0, 7}, {0x07, 0, 0}, {0x07, 5, 5}, {0x35, 0, 0}, VGA_REGSET_END}; 74 static const struct vga_regset vt8623_v_display_regs[] = {{0x12, 0, 7}, {0x07, 1, 1}, {0x07, 6, 6}, {0x35, 2, 2}, VGA_REGSET_END}; 75 static const struct vga_regset vt8623_v_blank_start_regs[] = {{0x15, 0, 7}, {0x07, 3, 3}, {0x09, 5, 5}, {0x35, 3, 3}, VGA_REGSET_END}; 76 static const struct vga_regset vt8623_v_blank_end_regs[] = {{0x16, 0, 7}, VGA_REGSET_END}; 77 static const struct vga_regset vt8623_v_sync_start_regs[] = {{0x10, 0, 7}, {0x07, 2, 2}, {0x07, 7, 7}, {0x35, 1, 1}, VGA_REGSET_END}; 78 static const struct vga_regset vt8623_v_sync_end_regs[] = {{0x11, 0, 3}, VGA_REGSET_END}; 79 80 static const struct vga_regset vt8623_offset_regs[] = {{0x13, 0, 7}, {0x35, 5, 7}, VGA_REGSET_END}; 81 static const struct vga_regset vt8623_line_compare_regs[] = {{0x18, 0, 7}, {0x07, 4, 4}, {0x09, 6, 6}, {0x33, 0, 2}, {0x35, 4, 4}, VGA_REGSET_END}; 82 static const struct vga_regset vt8623_fetch_count_regs[] = {{0x1C, 0, 7}, {0x1D, 0, 1}, VGA_REGSET_END}; 83 static const struct vga_regset vt8623_start_address_regs[] = {{0x0d, 0, 7}, {0x0c, 0, 7}, {0x34, 0, 7}, {0x48, 0, 1}, VGA_REGSET_END}; 84 85 static const struct svga_timing_regs vt8623_timing_regs = { 86 vt8623_h_total_regs, vt8623_h_display_regs, vt8623_h_blank_start_regs, 87 vt8623_h_blank_end_regs, vt8623_h_sync_start_regs, vt8623_h_sync_end_regs, 88 vt8623_v_total_regs, vt8623_v_display_regs, vt8623_v_blank_start_regs, 89 vt8623_v_blank_end_regs, vt8623_v_sync_start_regs, vt8623_v_sync_end_regs, 90 }; 91 92 93 /* ------------------------------------------------------------------------- */ 94 95 96 /* Module parameters */ 97 98 static char *mode_option = "640x480-8@60"; 99 static int mtrr = 1; 100 101 MODULE_AUTHOR("(c) 2006 Ondrej Zajicek <santiago@crfreenet.org>"); 102 MODULE_LICENSE("GPL"); 103 MODULE_DESCRIPTION("fbdev driver for integrated graphics core in VIA VT8623 [CLE266]"); 104 105 module_param(mode_option, charp, 0644); 106 MODULE_PARM_DESC(mode_option, "Default video mode ('640x480-8@60', etc)"); 107 module_param_named(mode, mode_option, charp, 0); 108 MODULE_PARM_DESC(mode, "Default video mode e.g. '648x480-8@60' (deprecated)"); 109 module_param(mtrr, int, 0444); 110 MODULE_PARM_DESC(mtrr, "Enable write-combining with MTRR (1=enable, 0=disable, default=1)"); 111 112 113 /* ------------------------------------------------------------------------- */ 114 115 static void vt8623fb_tilecursor(struct fb_info *info, struct fb_tilecursor *cursor) 116 { 117 struct vt8623fb_info *par = info->par; 118 119 svga_tilecursor(par->state.vgabase, info, cursor); 120 } 121 122 static struct fb_tile_ops vt8623fb_tile_ops = { 123 .fb_settile = svga_settile, 124 .fb_tilecopy = svga_tilecopy, 125 .fb_tilefill = svga_tilefill, 126 .fb_tileblit = svga_tileblit, 127 .fb_tilecursor = vt8623fb_tilecursor, 128 .fb_get_tilemax = svga_get_tilemax, 129 }; 130 131 132 /* ------------------------------------------------------------------------- */ 133 134 135 /* image data is MSB-first, fb structure is MSB-first too */ 136 static inline u32 expand_color(u32 c) 137 { 138 return ((c & 1) | ((c & 2) << 7) | ((c & 4) << 14) | ((c & 8) << 21)) * 0xFF; 139 } 140 141 /* vt8623fb_iplan_imageblit silently assumes that almost everything is 8-pixel aligned */ 142 static void vt8623fb_iplan_imageblit(struct fb_info *info, const struct fb_image *image) 143 { 144 u32 fg = expand_color(image->fg_color); 145 u32 bg = expand_color(image->bg_color); 146 const u8 *src1, *src; 147 u8 __iomem *dst1; 148 u32 __iomem *dst; 149 u32 val; 150 int x, y; 151 152 src1 = image->data; 153 dst1 = info->screen_base + (image->dy * info->fix.line_length) 154 + ((image->dx / 8) * 4); 155 156 for (y = 0; y < image->height; y++) { 157 src = src1; 158 dst = (u32 __iomem *) dst1; 159 for (x = 0; x < image->width; x += 8) { 160 val = *(src++) * 0x01010101; 161 val = (val & fg) | (~val & bg); 162 fb_writel(val, dst++); 163 } 164 src1 += image->width / 8; 165 dst1 += info->fix.line_length; 166 } 167 } 168 169 /* vt8623fb_iplan_fillrect silently assumes that almost everything is 8-pixel aligned */ 170 static void vt8623fb_iplan_fillrect(struct fb_info *info, const struct fb_fillrect *rect) 171 { 172 u32 fg = expand_color(rect->color); 173 u8 __iomem *dst1; 174 u32 __iomem *dst; 175 int x, y; 176 177 dst1 = info->screen_base + (rect->dy * info->fix.line_length) 178 + ((rect->dx / 8) * 4); 179 180 for (y = 0; y < rect->height; y++) { 181 dst = (u32 __iomem *) dst1; 182 for (x = 0; x < rect->width; x += 8) { 183 fb_writel(fg, dst++); 184 } 185 dst1 += info->fix.line_length; 186 } 187 } 188 189 190 /* image data is MSB-first, fb structure is high-nibble-in-low-byte-first */ 191 static inline u32 expand_pixel(u32 c) 192 { 193 return (((c & 1) << 24) | ((c & 2) << 27) | ((c & 4) << 14) | ((c & 8) << 17) | 194 ((c & 16) << 4) | ((c & 32) << 7) | ((c & 64) >> 6) | ((c & 128) >> 3)) * 0xF; 195 } 196 197 /* vt8623fb_cfb4_imageblit silently assumes that almost everything is 8-pixel aligned */ 198 static void vt8623fb_cfb4_imageblit(struct fb_info *info, const struct fb_image *image) 199 { 200 u32 fg = image->fg_color * 0x11111111; 201 u32 bg = image->bg_color * 0x11111111; 202 const u8 *src1, *src; 203 u8 __iomem *dst1; 204 u32 __iomem *dst; 205 u32 val; 206 int x, y; 207 208 src1 = image->data; 209 dst1 = info->screen_base + (image->dy * info->fix.line_length) 210 + ((image->dx / 8) * 4); 211 212 for (y = 0; y < image->height; y++) { 213 src = src1; 214 dst = (u32 __iomem *) dst1; 215 for (x = 0; x < image->width; x += 8) { 216 val = expand_pixel(*(src++)); 217 val = (val & fg) | (~val & bg); 218 fb_writel(val, dst++); 219 } 220 src1 += image->width / 8; 221 dst1 += info->fix.line_length; 222 } 223 } 224 225 static void vt8623fb_imageblit(struct fb_info *info, const struct fb_image *image) 226 { 227 if ((info->var.bits_per_pixel == 4) && (image->depth == 1) 228 && ((image->width % 8) == 0) && ((image->dx % 8) == 0)) { 229 if (info->fix.type == FB_TYPE_INTERLEAVED_PLANES) 230 vt8623fb_iplan_imageblit(info, image); 231 else 232 vt8623fb_cfb4_imageblit(info, image); 233 } else 234 cfb_imageblit(info, image); 235 } 236 237 static void vt8623fb_fillrect(struct fb_info *info, const struct fb_fillrect *rect) 238 { 239 if ((info->var.bits_per_pixel == 4) 240 && ((rect->width % 8) == 0) && ((rect->dx % 8) == 0) 241 && (info->fix.type == FB_TYPE_INTERLEAVED_PLANES)) 242 vt8623fb_iplan_fillrect(info, rect); 243 else 244 cfb_fillrect(info, rect); 245 } 246 247 248 /* ------------------------------------------------------------------------- */ 249 250 251 static void vt8623_set_pixclock(struct fb_info *info, u32 pixclock) 252 { 253 struct vt8623fb_info *par = info->par; 254 u16 m, n, r; 255 u8 regval; 256 int rv; 257 258 rv = svga_compute_pll(&vt8623_pll, 1000000000 / pixclock, &m, &n, &r, info->node); 259 if (rv < 0) { 260 fb_err(info, "cannot set requested pixclock, keeping old value\n"); 261 return; 262 } 263 264 /* Set VGA misc register */ 265 regval = vga_r(par->state.vgabase, VGA_MIS_R); 266 vga_w(par->state.vgabase, VGA_MIS_W, regval | VGA_MIS_ENB_PLL_LOAD); 267 268 /* Set clock registers */ 269 vga_wseq(par->state.vgabase, 0x46, (n | (r << 6))); 270 vga_wseq(par->state.vgabase, 0x47, m); 271 272 udelay(1000); 273 274 /* PLL reset */ 275 svga_wseq_mask(par->state.vgabase, 0x40, 0x02, 0x02); 276 svga_wseq_mask(par->state.vgabase, 0x40, 0x00, 0x02); 277 } 278 279 280 static int vt8623fb_open(struct fb_info *info, int user) 281 { 282 struct vt8623fb_info *par = info->par; 283 284 mutex_lock(&(par->open_lock)); 285 if (par->ref_count == 0) { 286 void __iomem *vgabase = par->state.vgabase; 287 288 memset(&(par->state), 0, sizeof(struct vgastate)); 289 par->state.vgabase = vgabase; 290 par->state.flags = VGA_SAVE_MODE | VGA_SAVE_FONTS | VGA_SAVE_CMAP; 291 par->state.num_crtc = 0xA2; 292 par->state.num_seq = 0x50; 293 save_vga(&(par->state)); 294 } 295 296 par->ref_count++; 297 mutex_unlock(&(par->open_lock)); 298 299 return 0; 300 } 301 302 static int vt8623fb_release(struct fb_info *info, int user) 303 { 304 struct vt8623fb_info *par = info->par; 305 306 mutex_lock(&(par->open_lock)); 307 if (par->ref_count == 0) { 308 mutex_unlock(&(par->open_lock)); 309 return -EINVAL; 310 } 311 312 if (par->ref_count == 1) 313 restore_vga(&(par->state)); 314 315 par->ref_count--; 316 mutex_unlock(&(par->open_lock)); 317 318 return 0; 319 } 320 321 static int vt8623fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) 322 { 323 int rv, mem, step; 324 325 if (!var->pixclock) 326 return -EINVAL; 327 328 /* Find appropriate format */ 329 rv = svga_match_format (vt8623fb_formats, var, NULL); 330 if (rv < 0) 331 { 332 fb_err(info, "unsupported mode requested\n"); 333 return rv; 334 } 335 336 /* Do not allow to have real resoulution larger than virtual */ 337 if (var->xres > var->xres_virtual) 338 var->xres_virtual = var->xres; 339 340 if (var->yres > var->yres_virtual) 341 var->yres_virtual = var->yres; 342 343 /* Round up xres_virtual to have proper alignment of lines */ 344 step = vt8623fb_formats[rv].xresstep - 1; 345 var->xres_virtual = (var->xres_virtual+step) & ~step; 346 347 /* Check whether have enough memory */ 348 mem = ((var->bits_per_pixel * var->xres_virtual) >> 3) * var->yres_virtual; 349 if (mem > info->screen_size) 350 { 351 fb_err(info, "not enough framebuffer memory (%d kB requested, %d kB available)\n", 352 mem >> 10, (unsigned int) (info->screen_size >> 10)); 353 return -EINVAL; 354 } 355 356 /* Text mode is limited to 256 kB of memory */ 357 if ((var->bits_per_pixel == 0) && (mem > (256*1024))) 358 { 359 fb_err(info, "text framebuffer size too large (%d kB requested, 256 kB possible)\n", 360 mem >> 10); 361 return -EINVAL; 362 } 363 364 rv = svga_check_timings (&vt8623_timing_regs, var, info->node); 365 if (rv < 0) 366 { 367 fb_err(info, "invalid timings requested\n"); 368 return rv; 369 } 370 371 /* Interlaced mode not supported */ 372 if (var->vmode & FB_VMODE_INTERLACED) 373 return -EINVAL; 374 375 return 0; 376 } 377 378 379 static int vt8623fb_set_par(struct fb_info *info) 380 { 381 u32 mode, offset_value, fetch_value, screen_size; 382 struct vt8623fb_info *par = info->par; 383 u32 bpp = info->var.bits_per_pixel; 384 385 if (bpp != 0) { 386 info->fix.ypanstep = 1; 387 info->fix.line_length = (info->var.xres_virtual * bpp) / 8; 388 389 info->flags &= ~FBINFO_MISC_TILEBLITTING; 390 info->tileops = NULL; 391 392 /* in 4bpp supports 8p wide tiles only, any tiles otherwise */ 393 info->pixmap.blit_x = (bpp == 4) ? (1 << (8 - 1)) : (~(u32)0); 394 info->pixmap.blit_y = ~(u32)0; 395 396 offset_value = (info->var.xres_virtual * bpp) / 64; 397 fetch_value = ((info->var.xres * bpp) / 128) + 4; 398 399 if (bpp == 4) 400 fetch_value = (info->var.xres / 8) + 8; /* + 0 is OK */ 401 402 screen_size = info->var.yres_virtual * info->fix.line_length; 403 } else { 404 info->fix.ypanstep = 16; 405 info->fix.line_length = 0; 406 407 info->flags |= FBINFO_MISC_TILEBLITTING; 408 info->tileops = &vt8623fb_tile_ops; 409 410 /* supports 8x16 tiles only */ 411 info->pixmap.blit_x = 1 << (8 - 1); 412 info->pixmap.blit_y = 1 << (16 - 1); 413 414 offset_value = info->var.xres_virtual / 16; 415 fetch_value = (info->var.xres / 8) + 8; 416 screen_size = (info->var.xres_virtual * info->var.yres_virtual) / 64; 417 } 418 419 info->var.xoffset = 0; 420 info->var.yoffset = 0; 421 info->var.activate = FB_ACTIVATE_NOW; 422 423 /* Unlock registers */ 424 svga_wseq_mask(par->state.vgabase, 0x10, 0x01, 0x01); 425 svga_wcrt_mask(par->state.vgabase, 0x11, 0x00, 0x80); 426 svga_wcrt_mask(par->state.vgabase, 0x47, 0x00, 0x01); 427 428 /* Device, screen and sync off */ 429 svga_wseq_mask(par->state.vgabase, 0x01, 0x20, 0x20); 430 svga_wcrt_mask(par->state.vgabase, 0x36, 0x30, 0x30); 431 svga_wcrt_mask(par->state.vgabase, 0x17, 0x00, 0x80); 432 433 /* Set default values */ 434 svga_set_default_gfx_regs(par->state.vgabase); 435 svga_set_default_atc_regs(par->state.vgabase); 436 svga_set_default_seq_regs(par->state.vgabase); 437 svga_set_default_crt_regs(par->state.vgabase); 438 svga_wcrt_multi(par->state.vgabase, vt8623_line_compare_regs, 0xFFFFFFFF); 439 svga_wcrt_multi(par->state.vgabase, vt8623_start_address_regs, 0); 440 441 svga_wcrt_multi(par->state.vgabase, vt8623_offset_regs, offset_value); 442 svga_wseq_multi(par->state.vgabase, vt8623_fetch_count_regs, fetch_value); 443 444 /* Clear H/V Skew */ 445 svga_wcrt_mask(par->state.vgabase, 0x03, 0x00, 0x60); 446 svga_wcrt_mask(par->state.vgabase, 0x05, 0x00, 0x60); 447 448 if (info->var.vmode & FB_VMODE_DOUBLE) 449 svga_wcrt_mask(par->state.vgabase, 0x09, 0x80, 0x80); 450 else 451 svga_wcrt_mask(par->state.vgabase, 0x09, 0x00, 0x80); 452 453 svga_wseq_mask(par->state.vgabase, 0x1E, 0xF0, 0xF0); // DI/DVP bus 454 svga_wseq_mask(par->state.vgabase, 0x2A, 0x0F, 0x0F); // DI/DVP bus 455 svga_wseq_mask(par->state.vgabase, 0x16, 0x08, 0xBF); // FIFO read threshold 456 vga_wseq(par->state.vgabase, 0x17, 0x1F); // FIFO depth 457 vga_wseq(par->state.vgabase, 0x18, 0x4E); 458 svga_wseq_mask(par->state.vgabase, 0x1A, 0x08, 0x08); // enable MMIO ? 459 460 vga_wcrt(par->state.vgabase, 0x32, 0x00); 461 vga_wcrt(par->state.vgabase, 0x34, 0x00); 462 vga_wcrt(par->state.vgabase, 0x6A, 0x80); 463 vga_wcrt(par->state.vgabase, 0x6A, 0xC0); 464 465 vga_wgfx(par->state.vgabase, 0x20, 0x00); 466 vga_wgfx(par->state.vgabase, 0x21, 0x00); 467 vga_wgfx(par->state.vgabase, 0x22, 0x00); 468 469 /* Set SR15 according to number of bits per pixel */ 470 mode = svga_match_format(vt8623fb_formats, &(info->var), &(info->fix)); 471 switch (mode) { 472 case 0: 473 fb_dbg(info, "text mode\n"); 474 svga_set_textmode_vga_regs(par->state.vgabase); 475 svga_wseq_mask(par->state.vgabase, 0x15, 0x00, 0xFE); 476 svga_wcrt_mask(par->state.vgabase, 0x11, 0x60, 0x70); 477 break; 478 case 1: 479 fb_dbg(info, "4 bit pseudocolor\n"); 480 vga_wgfx(par->state.vgabase, VGA_GFX_MODE, 0x40); 481 svga_wseq_mask(par->state.vgabase, 0x15, 0x20, 0xFE); 482 svga_wcrt_mask(par->state.vgabase, 0x11, 0x00, 0x70); 483 break; 484 case 2: 485 fb_dbg(info, "4 bit pseudocolor, planar\n"); 486 svga_wseq_mask(par->state.vgabase, 0x15, 0x00, 0xFE); 487 svga_wcrt_mask(par->state.vgabase, 0x11, 0x00, 0x70); 488 break; 489 case 3: 490 fb_dbg(info, "8 bit pseudocolor\n"); 491 svga_wseq_mask(par->state.vgabase, 0x15, 0x22, 0xFE); 492 break; 493 case 4: 494 fb_dbg(info, "5/6/5 truecolor\n"); 495 svga_wseq_mask(par->state.vgabase, 0x15, 0xB6, 0xFE); 496 break; 497 case 5: 498 fb_dbg(info, "8/8/8 truecolor\n"); 499 svga_wseq_mask(par->state.vgabase, 0x15, 0xAE, 0xFE); 500 break; 501 default: 502 printk(KERN_ERR "vt8623fb: unsupported mode - bug\n"); 503 return (-EINVAL); 504 } 505 506 vt8623_set_pixclock(info, info->var.pixclock); 507 svga_set_timings(par->state.vgabase, &vt8623_timing_regs, &(info->var), 1, 1, 508 (info->var.vmode & FB_VMODE_DOUBLE) ? 2 : 1, 1, 509 1, info->node); 510 511 memset_io(info->screen_base, 0x00, screen_size); 512 513 /* Device and screen back on */ 514 svga_wcrt_mask(par->state.vgabase, 0x17, 0x80, 0x80); 515 svga_wcrt_mask(par->state.vgabase, 0x36, 0x00, 0x30); 516 svga_wseq_mask(par->state.vgabase, 0x01, 0x00, 0x20); 517 518 return 0; 519 } 520 521 522 static int vt8623fb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, 523 u_int transp, struct fb_info *fb) 524 { 525 switch (fb->var.bits_per_pixel) { 526 case 0: 527 case 4: 528 if (regno >= 16) 529 return -EINVAL; 530 531 outb(0x0F, VGA_PEL_MSK); 532 outb(regno, VGA_PEL_IW); 533 outb(red >> 10, VGA_PEL_D); 534 outb(green >> 10, VGA_PEL_D); 535 outb(blue >> 10, VGA_PEL_D); 536 break; 537 case 8: 538 if (regno >= 256) 539 return -EINVAL; 540 541 outb(0xFF, VGA_PEL_MSK); 542 outb(regno, VGA_PEL_IW); 543 outb(red >> 10, VGA_PEL_D); 544 outb(green >> 10, VGA_PEL_D); 545 outb(blue >> 10, VGA_PEL_D); 546 break; 547 case 16: 548 if (regno >= 16) 549 return 0; 550 551 if (fb->var.green.length == 5) 552 ((u32*)fb->pseudo_palette)[regno] = ((red & 0xF800) >> 1) | 553 ((green & 0xF800) >> 6) | ((blue & 0xF800) >> 11); 554 else if (fb->var.green.length == 6) 555 ((u32*)fb->pseudo_palette)[regno] = (red & 0xF800) | 556 ((green & 0xFC00) >> 5) | ((blue & 0xF800) >> 11); 557 else 558 return -EINVAL; 559 break; 560 case 24: 561 case 32: 562 if (regno >= 16) 563 return 0; 564 565 /* ((transp & 0xFF00) << 16) */ 566 ((u32*)fb->pseudo_palette)[regno] = ((red & 0xFF00) << 8) | 567 (green & 0xFF00) | ((blue & 0xFF00) >> 8); 568 break; 569 default: 570 return -EINVAL; 571 } 572 573 return 0; 574 } 575 576 577 static int vt8623fb_blank(int blank_mode, struct fb_info *info) 578 { 579 struct vt8623fb_info *par = info->par; 580 581 switch (blank_mode) { 582 case FB_BLANK_UNBLANK: 583 fb_dbg(info, "unblank\n"); 584 svga_wcrt_mask(par->state.vgabase, 0x36, 0x00, 0x30); 585 svga_wseq_mask(par->state.vgabase, 0x01, 0x00, 0x20); 586 break; 587 case FB_BLANK_NORMAL: 588 fb_dbg(info, "blank\n"); 589 svga_wcrt_mask(par->state.vgabase, 0x36, 0x00, 0x30); 590 svga_wseq_mask(par->state.vgabase, 0x01, 0x20, 0x20); 591 break; 592 case FB_BLANK_HSYNC_SUSPEND: 593 fb_dbg(info, "DPMS standby (hsync off)\n"); 594 svga_wcrt_mask(par->state.vgabase, 0x36, 0x10, 0x30); 595 svga_wseq_mask(par->state.vgabase, 0x01, 0x20, 0x20); 596 break; 597 case FB_BLANK_VSYNC_SUSPEND: 598 fb_dbg(info, "DPMS suspend (vsync off)\n"); 599 svga_wcrt_mask(par->state.vgabase, 0x36, 0x20, 0x30); 600 svga_wseq_mask(par->state.vgabase, 0x01, 0x20, 0x20); 601 break; 602 case FB_BLANK_POWERDOWN: 603 fb_dbg(info, "DPMS off (no sync)\n"); 604 svga_wcrt_mask(par->state.vgabase, 0x36, 0x30, 0x30); 605 svga_wseq_mask(par->state.vgabase, 0x01, 0x20, 0x20); 606 break; 607 } 608 609 return 0; 610 } 611 612 613 static int vt8623fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *info) 614 { 615 struct vt8623fb_info *par = info->par; 616 unsigned int offset; 617 618 /* Calculate the offset */ 619 if (info->var.bits_per_pixel == 0) { 620 offset = (var->yoffset / 16) * info->var.xres_virtual 621 + var->xoffset; 622 offset = offset >> 3; 623 } else { 624 offset = (var->yoffset * info->fix.line_length) + 625 (var->xoffset * info->var.bits_per_pixel / 8); 626 offset = offset >> ((info->var.bits_per_pixel == 4) ? 2 : 1); 627 } 628 629 /* Set the offset */ 630 svga_wcrt_multi(par->state.vgabase, vt8623_start_address_regs, offset); 631 632 return 0; 633 } 634 635 636 /* ------------------------------------------------------------------------- */ 637 638 639 /* Frame buffer operations */ 640 641 static const struct fb_ops vt8623fb_ops = { 642 .owner = THIS_MODULE, 643 .fb_open = vt8623fb_open, 644 .fb_release = vt8623fb_release, 645 .fb_check_var = vt8623fb_check_var, 646 .fb_set_par = vt8623fb_set_par, 647 .fb_setcolreg = vt8623fb_setcolreg, 648 .fb_blank = vt8623fb_blank, 649 .fb_pan_display = vt8623fb_pan_display, 650 .fb_fillrect = vt8623fb_fillrect, 651 .fb_copyarea = cfb_copyarea, 652 .fb_imageblit = vt8623fb_imageblit, 653 .fb_get_caps = svga_get_caps, 654 }; 655 656 657 /* PCI probe */ 658 659 static int vt8623_pci_probe(struct pci_dev *dev, const struct pci_device_id *id) 660 { 661 struct pci_bus_region bus_reg; 662 struct resource vga_res; 663 struct fb_info *info; 664 struct vt8623fb_info *par; 665 unsigned int memsize1, memsize2; 666 int rc; 667 668 /* Ignore secondary VGA device because there is no VGA arbitration */ 669 if (! svga_primary_device(dev)) { 670 dev_info(&(dev->dev), "ignoring secondary device\n"); 671 return -ENODEV; 672 } 673 674 rc = aperture_remove_conflicting_pci_devices(dev, "vt8623fb"); 675 if (rc) 676 return rc; 677 678 /* Allocate and fill driver data structure */ 679 info = framebuffer_alloc(sizeof(struct vt8623fb_info), &(dev->dev)); 680 if (!info) 681 return -ENOMEM; 682 683 par = info->par; 684 mutex_init(&par->open_lock); 685 686 info->flags = FBINFO_PARTIAL_PAN_OK | FBINFO_HWACCEL_YPAN; 687 info->fbops = &vt8623fb_ops; 688 689 /* Prepare PCI device */ 690 691 rc = pci_enable_device(dev); 692 if (rc < 0) { 693 dev_err(info->device, "cannot enable PCI device\n"); 694 goto err_enable_device; 695 } 696 697 rc = pci_request_regions(dev, "vt8623fb"); 698 if (rc < 0) { 699 dev_err(info->device, "cannot reserve framebuffer region\n"); 700 goto err_request_regions; 701 } 702 703 info->fix.smem_start = pci_resource_start(dev, 0); 704 info->fix.smem_len = pci_resource_len(dev, 0); 705 info->fix.mmio_start = pci_resource_start(dev, 1); 706 info->fix.mmio_len = pci_resource_len(dev, 1); 707 708 /* Map physical IO memory address into kernel space */ 709 info->screen_base = pci_iomap_wc(dev, 0, 0); 710 if (! info->screen_base) { 711 rc = -ENOMEM; 712 dev_err(info->device, "iomap for framebuffer failed\n"); 713 goto err_iomap_1; 714 } 715 716 par->mmio_base = pci_iomap(dev, 1, 0); 717 if (! par->mmio_base) { 718 rc = -ENOMEM; 719 dev_err(info->device, "iomap for MMIO failed\n"); 720 goto err_iomap_2; 721 } 722 723 bus_reg.start = 0; 724 bus_reg.end = 64 * 1024; 725 726 vga_res.flags = IORESOURCE_IO; 727 728 pcibios_bus_to_resource(dev->bus, &vga_res, &bus_reg); 729 730 par->state.vgabase = (void __iomem *) (unsigned long) vga_res.start; 731 732 /* Find how many physical memory there is on card */ 733 memsize1 = (vga_rseq(par->state.vgabase, 0x34) + 1) >> 1; 734 memsize2 = vga_rseq(par->state.vgabase, 0x39) << 2; 735 736 if ((16 <= memsize1) && (memsize1 <= 64) && (memsize1 == memsize2)) 737 info->screen_size = memsize1 << 20; 738 else { 739 dev_err(info->device, "memory size detection failed (%x %x), suppose 16 MB\n", memsize1, memsize2); 740 info->screen_size = 16 << 20; 741 } 742 743 info->fix.smem_len = info->screen_size; 744 strcpy(info->fix.id, "VIA VT8623"); 745 info->fix.type = FB_TYPE_PACKED_PIXELS; 746 info->fix.visual = FB_VISUAL_PSEUDOCOLOR; 747 info->fix.ypanstep = 0; 748 info->fix.accel = FB_ACCEL_NONE; 749 info->pseudo_palette = (void*)par->pseudo_palette; 750 751 /* Prepare startup mode */ 752 753 kernel_param_lock(THIS_MODULE); 754 rc = fb_find_mode(&(info->var), info, mode_option, NULL, 0, NULL, 8); 755 kernel_param_unlock(THIS_MODULE); 756 if (! ((rc == 1) || (rc == 2))) { 757 rc = -EINVAL; 758 dev_err(info->device, "mode %s not found\n", mode_option); 759 goto err_find_mode; 760 } 761 762 rc = fb_alloc_cmap(&info->cmap, 256, 0); 763 if (rc < 0) { 764 dev_err(info->device, "cannot allocate colormap\n"); 765 goto err_alloc_cmap; 766 } 767 768 rc = register_framebuffer(info); 769 if (rc < 0) { 770 dev_err(info->device, "cannot register framebuffer\n"); 771 goto err_reg_fb; 772 } 773 774 fb_info(info, "%s on %s, %d MB RAM\n", 775 info->fix.id, pci_name(dev), info->fix.smem_len >> 20); 776 777 /* Record a reference to the driver data */ 778 pci_set_drvdata(dev, info); 779 780 if (mtrr) 781 par->wc_cookie = arch_phys_wc_add(info->fix.smem_start, 782 info->fix.smem_len); 783 784 return 0; 785 786 /* Error handling */ 787 err_reg_fb: 788 fb_dealloc_cmap(&info->cmap); 789 err_alloc_cmap: 790 err_find_mode: 791 pci_iounmap(dev, par->mmio_base); 792 err_iomap_2: 793 pci_iounmap(dev, info->screen_base); 794 err_iomap_1: 795 pci_release_regions(dev); 796 err_request_regions: 797 /* pci_disable_device(dev); */ 798 err_enable_device: 799 framebuffer_release(info); 800 return rc; 801 } 802 803 /* PCI remove */ 804 805 static void vt8623_pci_remove(struct pci_dev *dev) 806 { 807 struct fb_info *info = pci_get_drvdata(dev); 808 809 if (info) { 810 struct vt8623fb_info *par = info->par; 811 812 arch_phys_wc_del(par->wc_cookie); 813 unregister_framebuffer(info); 814 fb_dealloc_cmap(&info->cmap); 815 816 pci_iounmap(dev, info->screen_base); 817 pci_iounmap(dev, par->mmio_base); 818 pci_release_regions(dev); 819 /* pci_disable_device(dev); */ 820 821 framebuffer_release(info); 822 } 823 } 824 825 826 /* PCI suspend */ 827 828 static int __maybe_unused vt8623_pci_suspend(struct device *dev) 829 { 830 struct fb_info *info = dev_get_drvdata(dev); 831 struct vt8623fb_info *par = info->par; 832 833 dev_info(info->device, "suspend\n"); 834 835 console_lock(); 836 mutex_lock(&(par->open_lock)); 837 838 if (par->ref_count == 0) { 839 mutex_unlock(&(par->open_lock)); 840 console_unlock(); 841 return 0; 842 } 843 844 fb_set_suspend(info, 1); 845 846 mutex_unlock(&(par->open_lock)); 847 console_unlock(); 848 849 return 0; 850 } 851 852 853 /* PCI resume */ 854 855 static int __maybe_unused vt8623_pci_resume(struct device *dev) 856 { 857 struct fb_info *info = dev_get_drvdata(dev); 858 struct vt8623fb_info *par = info->par; 859 860 dev_info(info->device, "resume\n"); 861 862 console_lock(); 863 mutex_lock(&(par->open_lock)); 864 865 if (par->ref_count == 0) 866 goto fail; 867 868 vt8623fb_set_par(info); 869 fb_set_suspend(info, 0); 870 871 fail: 872 mutex_unlock(&(par->open_lock)); 873 console_unlock(); 874 875 return 0; 876 } 877 878 static const struct dev_pm_ops vt8623_pci_pm_ops = { 879 #ifdef CONFIG_PM_SLEEP 880 .suspend = vt8623_pci_suspend, 881 .resume = vt8623_pci_resume, 882 .freeze = NULL, 883 .thaw = vt8623_pci_resume, 884 .poweroff = vt8623_pci_suspend, 885 .restore = vt8623_pci_resume, 886 #endif /* CONFIG_PM_SLEEP */ 887 }; 888 889 /* List of boards that we are trying to support */ 890 891 static const struct pci_device_id vt8623_devices[] = { 892 {PCI_DEVICE(PCI_VENDOR_ID_VIA, 0x3122)}, 893 {0, 0, 0, 0, 0, 0, 0} 894 }; 895 896 MODULE_DEVICE_TABLE(pci, vt8623_devices); 897 898 static struct pci_driver vt8623fb_pci_driver = { 899 .name = "vt8623fb", 900 .id_table = vt8623_devices, 901 .probe = vt8623_pci_probe, 902 .remove = vt8623_pci_remove, 903 .driver.pm = &vt8623_pci_pm_ops, 904 }; 905 906 /* Cleanup */ 907 908 static void __exit vt8623fb_cleanup(void) 909 { 910 pr_debug("vt8623fb: cleaning up\n"); 911 pci_unregister_driver(&vt8623fb_pci_driver); 912 } 913 914 /* Driver Initialisation */ 915 916 static int __init vt8623fb_init(void) 917 { 918 919 #ifndef MODULE 920 char *option = NULL; 921 922 if (fb_get_options("vt8623fb", &option)) 923 return -ENODEV; 924 925 if (option && *option) 926 mode_option = option; 927 #endif 928 929 pr_debug("vt8623fb: initializing\n"); 930 return pci_register_driver(&vt8623fb_pci_driver); 931 } 932 933 /* ------------------------------------------------------------------------- */ 934 935 /* Modularization */ 936 937 module_init(vt8623fb_init); 938 module_exit(vt8623fb_cleanup); 939