Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * valkyriefb.c -- frame buffer device for the PowerMac 'valkyrie' display |
| 3 | * |
| 4 | * Created 8 August 1998 by |
| 5 | * Martin Costabel <costabel@wanadoo.fr> and Kevin Schoedel |
| 6 | * |
| 7 | * Vmode-switching changes and vmode 15/17 modifications created 29 August |
| 8 | * 1998 by Barry K. Nathan <barryn@pobox.com>. |
| 9 | * |
| 10 | * Ported to m68k Macintosh by David Huggins-Daines <dhd@debian.org> |
| 11 | * |
| 12 | * Derived directly from: |
| 13 | * |
| 14 | * controlfb.c -- frame buffer device for the PowerMac 'control' display |
| 15 | * Copyright (C) 1998 Dan Jacobowitz <dan@debian.org> |
| 16 | * |
| 17 | * pmc-valkyrie.c -- Console support for PowerMac "valkyrie" display adaptor. |
| 18 | * Copyright (C) 1997 Paul Mackerras. |
| 19 | * |
| 20 | * and indirectly: |
| 21 | * |
| 22 | * Frame buffer structure from: |
| 23 | * drivers/video/chipsfb.c -- frame buffer device for |
| 24 | * Chips & Technologies 65550 chip. |
| 25 | * |
| 26 | * Copyright (C) 1998 Paul Mackerras |
| 27 | * |
| 28 | * This file is derived from the Powermac "chips" driver: |
| 29 | * Copyright (C) 1997 Fabio Riccardi. |
| 30 | * And from the frame buffer device for Open Firmware-initialized devices: |
| 31 | * Copyright (C) 1997 Geert Uytterhoeven. |
| 32 | * |
| 33 | * Hardware information from: |
| 34 | * control.c: Console support for PowerMac "control" display adaptor. |
| 35 | * Copyright (C) 1996 Paul Mackerras |
| 36 | * |
| 37 | * This file is subject to the terms and conditions of the GNU General Public |
| 38 | * License. See the file COPYING in the main directory of this archive for |
| 39 | * more details. |
| 40 | */ |
| 41 | |
| 42 | #include <linux/config.h> |
| 43 | #include <linux/module.h> |
| 44 | #include <linux/kernel.h> |
| 45 | #include <linux/errno.h> |
| 46 | #include <linux/string.h> |
| 47 | #include <linux/mm.h> |
| 48 | #include <linux/tty.h> |
| 49 | #include <linux/slab.h> |
| 50 | #include <linux/vmalloc.h> |
| 51 | #include <linux/delay.h> |
| 52 | #include <linux/interrupt.h> |
| 53 | #include <linux/fb.h> |
| 54 | #include <linux/selection.h> |
| 55 | #include <linux/init.h> |
| 56 | #include <linux/pci.h> |
| 57 | #include <linux/nvram.h> |
| 58 | #include <linux/adb.h> |
| 59 | #include <linux/cuda.h> |
| 60 | #include <asm/io.h> |
| 61 | #ifdef CONFIG_MAC |
| 62 | #include <asm/bootinfo.h> |
| 63 | #include <asm/macintosh.h> |
| 64 | #else |
| 65 | #include <asm/prom.h> |
| 66 | #endif |
| 67 | #include <asm/pgtable.h> |
| 68 | |
| 69 | #include "macmodes.h" |
| 70 | #include "valkyriefb.h" |
| 71 | |
| 72 | #ifdef CONFIG_MAC |
| 73 | /* We don't yet have functions to read the PRAM... perhaps we can |
| 74 | adapt them from the PPC code? */ |
| 75 | static int default_vmode = VMODE_640_480_67; |
| 76 | static int default_cmode = CMODE_8; |
| 77 | #else |
| 78 | static int default_vmode = VMODE_NVRAM; |
| 79 | static int default_cmode = CMODE_NVRAM; |
| 80 | #endif |
| 81 | |
| 82 | struct fb_par_valkyrie { |
| 83 | int vmode, cmode; |
| 84 | int xres, yres; |
| 85 | int vxres, vyres; |
| 86 | struct valkyrie_regvals *init; |
| 87 | }; |
| 88 | |
| 89 | struct fb_info_valkyrie { |
| 90 | struct fb_info info; |
| 91 | struct fb_par_valkyrie par; |
| 92 | struct cmap_regs __iomem *cmap_regs; |
| 93 | unsigned long cmap_regs_phys; |
| 94 | |
| 95 | struct valkyrie_regs __iomem *valkyrie_regs; |
| 96 | unsigned long valkyrie_regs_phys; |
| 97 | |
| 98 | __u8 __iomem *frame_buffer; |
| 99 | unsigned long frame_buffer_phys; |
| 100 | |
| 101 | int sense; |
| 102 | unsigned long total_vram; |
| 103 | |
| 104 | u32 pseudo_palette[16]; |
| 105 | }; |
| 106 | |
| 107 | /* |
| 108 | * Exported functions |
| 109 | */ |
| 110 | int valkyriefb_init(void); |
| 111 | int valkyriefb_setup(char*); |
| 112 | |
| 113 | static int valkyriefb_check_var(struct fb_var_screeninfo *var, |
| 114 | struct fb_info *info); |
| 115 | static int valkyriefb_set_par(struct fb_info *info); |
| 116 | static int valkyriefb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, |
| 117 | u_int transp, struct fb_info *info); |
| 118 | static int valkyriefb_blank(int blank_mode, struct fb_info *info); |
| 119 | |
| 120 | static int read_valkyrie_sense(struct fb_info_valkyrie *p); |
| 121 | static void set_valkyrie_clock(unsigned char *params); |
| 122 | static int valkyrie_var_to_par(struct fb_var_screeninfo *var, |
| 123 | struct fb_par_valkyrie *par, const struct fb_info *fb_info); |
| 124 | |
| 125 | static void valkyrie_init_info(struct fb_info *info, struct fb_info_valkyrie *p); |
| 126 | static void valkyrie_par_to_fix(struct fb_par_valkyrie *par, struct fb_fix_screeninfo *fix); |
| 127 | static void valkyrie_init_fix(struct fb_fix_screeninfo *fix, struct fb_info_valkyrie *p); |
| 128 | |
| 129 | static struct fb_ops valkyriefb_ops = { |
| 130 | .owner = THIS_MODULE, |
| 131 | .fb_check_var = valkyriefb_check_var, |
| 132 | .fb_set_par = valkyriefb_set_par, |
| 133 | .fb_setcolreg = valkyriefb_setcolreg, |
| 134 | .fb_blank = valkyriefb_blank, |
| 135 | .fb_fillrect = cfb_fillrect, |
| 136 | .fb_copyarea = cfb_copyarea, |
| 137 | .fb_imageblit = cfb_imageblit, |
| 138 | .fb_cursor = soft_cursor, |
| 139 | }; |
| 140 | |
| 141 | /* Sets the video mode according to info->var */ |
| 142 | static int valkyriefb_set_par(struct fb_info *info) |
| 143 | { |
| 144 | struct fb_info_valkyrie *p = (struct fb_info_valkyrie *) info; |
| 145 | volatile struct valkyrie_regs __iomem *valkyrie_regs = p->valkyrie_regs; |
| 146 | struct fb_par_valkyrie *par = info->par; |
| 147 | struct valkyrie_regvals *init; |
| 148 | int err; |
| 149 | |
| 150 | if ((err = valkyrie_var_to_par(&info->var, par, info))) |
| 151 | return err; |
| 152 | |
| 153 | valkyrie_par_to_fix(par, &info->fix); |
| 154 | |
| 155 | /* Reset the valkyrie */ |
| 156 | out_8(&valkyrie_regs->status.r, 0); |
| 157 | udelay(100); |
| 158 | |
| 159 | /* Initialize display timing registers */ |
| 160 | init = par->init; |
| 161 | out_8(&valkyrie_regs->mode.r, init->mode | 0x80); |
| 162 | out_8(&valkyrie_regs->depth.r, par->cmode + 3); |
| 163 | set_valkyrie_clock(init->clock_params); |
| 164 | udelay(100); |
| 165 | |
| 166 | /* Turn on display */ |
| 167 | out_8(&valkyrie_regs->mode.r, init->mode); |
| 168 | |
| 169 | return 0; |
| 170 | } |
| 171 | |
| 172 | static inline int valkyrie_par_to_var(struct fb_par_valkyrie *par, |
| 173 | struct fb_var_screeninfo *var) |
| 174 | { |
| 175 | return mac_vmode_to_var(par->vmode, par->cmode, var); |
| 176 | } |
| 177 | |
| 178 | static int |
| 179 | valkyriefb_check_var(struct fb_var_screeninfo *var, struct fb_info *info) |
| 180 | { |
| 181 | int err; |
| 182 | struct fb_par_valkyrie par; |
| 183 | |
| 184 | if ((err = valkyrie_var_to_par(var, &par, info))) |
| 185 | return err; |
| 186 | valkyrie_par_to_var(&par, var); |
| 187 | return 0; |
| 188 | } |
| 189 | |
| 190 | /* |
| 191 | * Blank the screen if blank_mode != 0, else unblank. If blank_mode == NULL |
| 192 | * then the caller blanks by setting the CLUT (Color Look Up Table) to all |
| 193 | * black. Return 0 if blanking succeeded, != 0 if un-/blanking failed due |
| 194 | * to e.g. a video mode which doesn't support it. Implements VESA suspend |
| 195 | * and powerdown modes on hardware that supports disabling hsync/vsync: |
| 196 | * blank_mode == 2: suspend vsync |
| 197 | * blank_mode == 3: suspend hsync |
| 198 | * blank_mode == 4: powerdown |
| 199 | */ |
| 200 | static int valkyriefb_blank(int blank_mode, struct fb_info *info) |
| 201 | { |
| 202 | struct fb_info_valkyrie *p = (struct fb_info_valkyrie *) info; |
| 203 | struct fb_par_valkyrie *par = info->par; |
| 204 | struct valkyrie_regvals *init = par->init; |
| 205 | |
| 206 | if (init == NULL) |
| 207 | return 1; |
| 208 | |
| 209 | switch (blank_mode) { |
| 210 | case FB_BLANK_UNBLANK: /* unblank */ |
| 211 | out_8(&p->valkyrie_regs->mode.r, init->mode); |
| 212 | break; |
| 213 | case FB_BLANK_NORMAL: |
| 214 | return 1; /* get caller to set CLUT to all black */ |
| 215 | case FB_BLANK_VSYNC_SUSPEND: |
| 216 | case FB_BLANK_HSYNC_SUSPEND: |
| 217 | /* |
| 218 | * [kps] Value extracted from MacOS. I don't know |
| 219 | * whether this bit disables hsync or vsync, or |
| 220 | * whether the hardware can do the other as well. |
| 221 | */ |
| 222 | out_8(&p->valkyrie_regs->mode.r, init->mode | 0x40); |
| 223 | break; |
| 224 | case FB_BLANK_POWERDOWN: |
| 225 | out_8(&p->valkyrie_regs->mode.r, 0x66); |
| 226 | break; |
| 227 | } |
| 228 | return 0; |
| 229 | } |
| 230 | |
| 231 | static int valkyriefb_setcolreg(u_int regno, u_int red, u_int green, u_int blue, |
| 232 | u_int transp, struct fb_info *info) |
| 233 | { |
| 234 | struct fb_info_valkyrie *p = (struct fb_info_valkyrie *) info; |
| 235 | volatile struct cmap_regs __iomem *cmap_regs = p->cmap_regs; |
| 236 | struct fb_par_valkyrie *par = info->par; |
| 237 | |
| 238 | if (regno > 255) |
| 239 | return 1; |
| 240 | red >>= 8; |
| 241 | green >>= 8; |
| 242 | blue >>= 8; |
| 243 | |
| 244 | /* tell clut which address to fill */ |
| 245 | out_8(&p->cmap_regs->addr, regno); |
| 246 | udelay(1); |
| 247 | /* send one color channel at a time */ |
| 248 | out_8(&cmap_regs->lut, red); |
| 249 | out_8(&cmap_regs->lut, green); |
| 250 | out_8(&cmap_regs->lut, blue); |
| 251 | |
| 252 | if (regno < 16 && par->cmode == CMODE_16) |
| 253 | ((u32 *)info->pseudo_palette)[regno] = |
| 254 | (regno << 10) | (regno << 5) | regno; |
| 255 | |
| 256 | return 0; |
| 257 | } |
| 258 | |
| 259 | static inline int valkyrie_vram_reqd(int video_mode, int color_mode) |
| 260 | { |
| 261 | int pitch; |
| 262 | struct valkyrie_regvals *init = valkyrie_reg_init[video_mode-1]; |
| 263 | |
| 264 | if ((pitch = init->pitch[color_mode]) == 0) |
| 265 | pitch = 2 * init->pitch[0]; |
| 266 | return init->vres * pitch; |
| 267 | } |
| 268 | |
| 269 | static void set_valkyrie_clock(unsigned char *params) |
| 270 | { |
| 271 | struct adb_request req; |
| 272 | int i; |
| 273 | |
| 274 | #ifdef CONFIG_ADB_CUDA |
| 275 | for (i = 0; i < 3; ++i) { |
| 276 | cuda_request(&req, NULL, 5, CUDA_PACKET, CUDA_GET_SET_IIC, |
| 277 | 0x50, i + 1, params[i]); |
| 278 | while (!req.complete) |
| 279 | cuda_poll(); |
| 280 | } |
| 281 | #endif |
| 282 | } |
| 283 | |
| 284 | static void __init valkyrie_choose_mode(struct fb_info_valkyrie *p) |
| 285 | { |
| 286 | p->sense = read_valkyrie_sense(p); |
| 287 | printk(KERN_INFO "Monitor sense value = 0x%x\n", p->sense); |
| 288 | |
| 289 | /* Try to pick a video mode out of NVRAM if we have one. */ |
| 290 | #ifndef CONFIG_MAC |
| 291 | if (default_vmode == VMODE_NVRAM) { |
| 292 | default_vmode = nvram_read_byte(NV_VMODE); |
| 293 | if (default_vmode <= 0 |
| 294 | || default_vmode > VMODE_MAX |
| 295 | || !valkyrie_reg_init[default_vmode - 1]) |
| 296 | default_vmode = VMODE_CHOOSE; |
| 297 | } |
| 298 | #endif |
| 299 | if (default_vmode == VMODE_CHOOSE) |
| 300 | default_vmode = mac_map_monitor_sense(p->sense); |
| 301 | if (!valkyrie_reg_init[default_vmode - 1]) |
| 302 | default_vmode = VMODE_640_480_67; |
| 303 | #ifndef CONFIG_MAC |
| 304 | if (default_cmode == CMODE_NVRAM) |
| 305 | default_cmode = nvram_read_byte(NV_CMODE); |
| 306 | #endif |
| 307 | |
| 308 | /* |
| 309 | * Reduce the pixel size if we don't have enough VRAM or bandwidth. |
| 310 | */ |
| 311 | if (default_cmode < CMODE_8 || default_cmode > CMODE_16 |
| 312 | || valkyrie_reg_init[default_vmode-1]->pitch[default_cmode] == 0 |
| 313 | || valkyrie_vram_reqd(default_vmode, default_cmode) > p->total_vram) |
| 314 | default_cmode = CMODE_8; |
| 315 | |
| 316 | printk(KERN_INFO "using video mode %d and color mode %d.\n", |
| 317 | default_vmode, default_cmode); |
| 318 | } |
| 319 | |
| 320 | int __init valkyriefb_init(void) |
| 321 | { |
| 322 | struct fb_info_valkyrie *p; |
| 323 | unsigned long frame_buffer_phys, cmap_regs_phys, flags; |
| 324 | int err; |
| 325 | char *option = NULL; |
| 326 | |
| 327 | if (fb_get_options("valkyriefb", &option)) |
| 328 | return -ENODEV; |
| 329 | valkyriefb_setup(option); |
| 330 | |
| 331 | #ifdef CONFIG_MAC |
| 332 | if (!MACH_IS_MAC) |
| 333 | return 0; |
| 334 | if (!(mac_bi_data.id == MAC_MODEL_Q630 |
| 335 | /* I'm not sure about this one */ |
| 336 | || mac_bi_data.id == MAC_MODEL_P588)) |
| 337 | return 0; |
| 338 | |
| 339 | /* Hardcoded addresses... welcome to 68k Macintosh country :-) */ |
| 340 | frame_buffer_phys = 0xf9000000; |
| 341 | cmap_regs_phys = 0x50f24000; |
| 342 | flags = IOMAP_NOCACHE_SER; /* IOMAP_WRITETHROUGH?? */ |
| 343 | #else /* ppc (!CONFIG_MAC) */ |
| 344 | { |
| 345 | struct device_node *dp; |
| 346 | |
| 347 | dp = find_devices("valkyrie"); |
| 348 | if (dp == 0) |
| 349 | return 0; |
| 350 | |
| 351 | if (dp->n_addrs != 1) { |
| 352 | printk(KERN_ERR "expecting 1 address for valkyrie (got %d)\n", |
| 353 | dp->n_addrs); |
| 354 | return 0; |
| 355 | } |
| 356 | |
| 357 | frame_buffer_phys = dp->addrs[0].address; |
| 358 | cmap_regs_phys = dp->addrs[0].address+0x304000; |
| 359 | flags = _PAGE_WRITETHRU; |
| 360 | } |
| 361 | #endif /* ppc (!CONFIG_MAC) */ |
| 362 | |
| 363 | p = kmalloc(sizeof(*p), GFP_ATOMIC); |
| 364 | if (p == 0) |
| 365 | return -ENOMEM; |
| 366 | memset(p, 0, sizeof(*p)); |
| 367 | |
| 368 | /* Map in frame buffer and registers */ |
| 369 | if (!request_mem_region(frame_buffer_phys, 0x100000, "valkyriefb")) { |
| 370 | kfree(p); |
| 371 | return 0; |
| 372 | } |
| 373 | p->total_vram = 0x100000; |
| 374 | p->frame_buffer_phys = frame_buffer_phys; |
| 375 | p->frame_buffer = __ioremap(frame_buffer_phys, p->total_vram, flags); |
| 376 | p->cmap_regs_phys = cmap_regs_phys; |
| 377 | p->cmap_regs = ioremap(p->cmap_regs_phys, 0x1000); |
| 378 | p->valkyrie_regs_phys = cmap_regs_phys+0x6000; |
| 379 | p->valkyrie_regs = ioremap(p->valkyrie_regs_phys, 0x1000); |
| 380 | err = -ENOMEM; |
| 381 | if (p->frame_buffer == NULL || p->cmap_regs == NULL |
| 382 | || p->valkyrie_regs == NULL) { |
| 383 | printk(KERN_ERR "valkyriefb: couldn't map resources\n"); |
| 384 | goto out_free; |
| 385 | } |
| 386 | |
| 387 | valkyrie_choose_mode(p); |
| 388 | mac_vmode_to_var(default_vmode, default_cmode, &p->info.var); |
| 389 | valkyrie_init_info(&p->info, p); |
| 390 | valkyrie_init_fix(&p->info.fix, p); |
| 391 | if (valkyriefb_set_par(&p->info)) |
| 392 | /* "can't happen" */ |
| 393 | printk(KERN_ERR "valkyriefb: can't set default video mode\n"); |
| 394 | |
| 395 | if ((err = register_framebuffer(&p->info)) != 0) |
| 396 | goto out_free; |
| 397 | |
| 398 | printk(KERN_INFO "fb%d: valkyrie frame buffer device\n", p->info.node); |
| 399 | return 0; |
| 400 | |
| 401 | out_free: |
| 402 | if (p->frame_buffer) |
| 403 | iounmap(p->frame_buffer); |
| 404 | if (p->cmap_regs) |
| 405 | iounmap(p->cmap_regs); |
| 406 | if (p->valkyrie_regs) |
| 407 | iounmap(p->valkyrie_regs); |
| 408 | kfree(p); |
| 409 | return err; |
| 410 | } |
| 411 | |
| 412 | /* |
| 413 | * Get the monitor sense value. |
| 414 | */ |
| 415 | static int read_valkyrie_sense(struct fb_info_valkyrie *p) |
| 416 | { |
| 417 | int sense, in; |
| 418 | |
| 419 | out_8(&p->valkyrie_regs->msense.r, 0); /* release all lines */ |
| 420 | __delay(20000); |
| 421 | sense = ((in = in_8(&p->valkyrie_regs->msense.r)) & 0x70) << 4; |
| 422 | /* drive each sense line low in turn and collect the other 2 */ |
| 423 | out_8(&p->valkyrie_regs->msense.r, 4); /* drive A low */ |
| 424 | __delay(20000); |
| 425 | sense |= ((in = in_8(&p->valkyrie_regs->msense.r)) & 0x30); |
| 426 | out_8(&p->valkyrie_regs->msense.r, 2); /* drive B low */ |
| 427 | __delay(20000); |
| 428 | sense |= ((in = in_8(&p->valkyrie_regs->msense.r)) & 0x40) >> 3; |
| 429 | sense |= (in & 0x10) >> 2; |
| 430 | out_8(&p->valkyrie_regs->msense.r, 1); /* drive C low */ |
| 431 | __delay(20000); |
| 432 | sense |= ((in = in_8(&p->valkyrie_regs->msense.r)) & 0x60) >> 5; |
| 433 | |
| 434 | out_8(&p->valkyrie_regs->msense.r, 7); |
| 435 | |
| 436 | return sense; |
| 437 | } |
| 438 | |
| 439 | /* |
| 440 | * This routine takes a user-supplied var, |
| 441 | * and picks the best vmode/cmode from it. |
| 442 | */ |
| 443 | |
| 444 | /* [bkn] I did a major overhaul of this function. |
| 445 | * |
| 446 | * Much of the old code was "swiped by jonh from atyfb.c". Because |
| 447 | * macmodes has mac_var_to_vmode, I felt that it would be better to |
| 448 | * rework this function to use that, instead of reinventing the wheel to |
| 449 | * add support for vmode 17. This was reinforced by the fact that |
| 450 | * the previously swiped atyfb.c code is no longer there. |
| 451 | * |
| 452 | * So, I swiped and adapted platinum_var_to_par (from platinumfb.c), replacing |
| 453 | * most, but not all, of the old code in the process. One side benefit of |
| 454 | * swiping the platinumfb code is that we now have more comprehensible error |
| 455 | * messages when a vmode/cmode switch fails. (Most of the error messages are |
| 456 | * platinumfb.c, but I added two of my own, and I also changed some commas |
| 457 | * into colons to make the messages more consistent with other Linux error |
| 458 | * messages.) In addition, I think the new code *might* fix some vmode- |
| 459 | * switching oddities, but I'm not sure. |
| 460 | * |
| 461 | * There may be some more opportunities for cleanup in here, but this is a |
| 462 | * good start... |
| 463 | */ |
| 464 | |
| 465 | static int valkyrie_var_to_par(struct fb_var_screeninfo *var, |
| 466 | struct fb_par_valkyrie *par, const struct fb_info *fb_info) |
| 467 | { |
| 468 | int vmode, cmode; |
| 469 | struct valkyrie_regvals *init; |
| 470 | struct fb_info_valkyrie *p = (struct fb_info_valkyrie *) fb_info; |
| 471 | |
| 472 | if (mac_var_to_vmode(var, &vmode, &cmode) != 0) { |
| 473 | printk(KERN_ERR "valkyriefb: can't do %dx%dx%d.\n", |
| 474 | var->xres, var->yres, var->bits_per_pixel); |
| 475 | return -EINVAL; |
| 476 | } |
| 477 | |
| 478 | /* Check if we know about the wanted video mode */ |
| 479 | if (vmode < 1 || vmode > VMODE_MAX || !valkyrie_reg_init[vmode-1]) { |
| 480 | printk(KERN_ERR "valkyriefb: vmode %d not valid.\n", vmode); |
| 481 | return -EINVAL; |
| 482 | } |
| 483 | |
| 484 | if (cmode != CMODE_8 && cmode != CMODE_16) { |
| 485 | printk(KERN_ERR "valkyriefb: cmode %d not valid.\n", cmode); |
| 486 | return -EINVAL; |
| 487 | } |
| 488 | |
| 489 | if (var->xres_virtual > var->xres || var->yres_virtual > var->yres |
| 490 | || var->xoffset != 0 || var->yoffset != 0) { |
| 491 | return -EINVAL; |
| 492 | } |
| 493 | |
| 494 | init = valkyrie_reg_init[vmode-1]; |
| 495 | if (init->pitch[cmode] == 0) { |
| 496 | printk(KERN_ERR "valkyriefb: vmode %d does not support " |
| 497 | "cmode %d.\n", vmode, cmode); |
| 498 | return -EINVAL; |
| 499 | } |
| 500 | |
| 501 | if (valkyrie_vram_reqd(vmode, cmode) > p->total_vram) { |
| 502 | printk(KERN_ERR "valkyriefb: not enough ram for vmode %d, " |
| 503 | "cmode %d.\n", vmode, cmode); |
| 504 | return -EINVAL; |
| 505 | } |
| 506 | |
| 507 | par->vmode = vmode; |
| 508 | par->cmode = cmode; |
| 509 | par->init = init; |
| 510 | par->xres = var->xres; |
| 511 | par->yres = var->yres; |
| 512 | par->vxres = par->xres; |
| 513 | par->vyres = par->yres; |
| 514 | |
| 515 | return 0; |
| 516 | } |
| 517 | |
| 518 | static void valkyrie_init_fix(struct fb_fix_screeninfo *fix, struct fb_info_valkyrie *p) |
| 519 | { |
| 520 | memset(fix, 0, sizeof(*fix)); |
| 521 | strcpy(fix->id, "valkyrie"); |
| 522 | fix->mmio_start = p->valkyrie_regs_phys; |
| 523 | fix->mmio_len = sizeof(struct valkyrie_regs); |
| 524 | fix->type = FB_TYPE_PACKED_PIXELS; |
| 525 | fix->smem_start = p->frame_buffer_phys + 0x1000; |
| 526 | fix->smem_len = p->total_vram; |
| 527 | |
| 528 | fix->type_aux = 0; |
| 529 | fix->ywrapstep = 0; |
| 530 | fix->ypanstep = 0; |
| 531 | fix->xpanstep = 0; |
| 532 | |
| 533 | } |
| 534 | |
| 535 | /* Fix must already be inited above */ |
| 536 | static void valkyrie_par_to_fix(struct fb_par_valkyrie *par, |
| 537 | struct fb_fix_screeninfo *fix) |
| 538 | { |
| 539 | fix->smem_len = valkyrie_vram_reqd(par->vmode, par->cmode); |
| 540 | fix->visual = (par->cmode == CMODE_8) ? |
| 541 | FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_DIRECTCOLOR; |
| 542 | fix->line_length = par->vxres << par->cmode; |
| 543 | /* ywrapstep, xpanstep, ypanstep */ |
| 544 | } |
| 545 | |
| 546 | static void __init valkyrie_init_info(struct fb_info *info, struct fb_info_valkyrie *p) |
| 547 | { |
| 548 | info->fbops = &valkyriefb_ops; |
| 549 | info->screen_base = p->frame_buffer + 0x1000; |
| 550 | info->flags = FBINFO_DEFAULT; |
| 551 | info->pseudo_palette = p->pseudo_palette; |
| 552 | fb_alloc_cmap(&info->cmap, 256, 0); |
| 553 | info->par = &p->par; |
| 554 | } |
| 555 | |
| 556 | |
| 557 | /* |
| 558 | * Parse user speficied options (`video=valkyriefb:') |
| 559 | */ |
| 560 | int __init valkyriefb_setup(char *options) |
| 561 | { |
| 562 | char *this_opt; |
| 563 | |
| 564 | if (!options || !*options) |
| 565 | return 0; |
| 566 | |
| 567 | while ((this_opt = strsep(&options, ",")) != NULL) { |
| 568 | if (!strncmp(this_opt, "vmode:", 6)) { |
| 569 | int vmode = simple_strtoul(this_opt+6, NULL, 0); |
| 570 | if (vmode > 0 && vmode <= VMODE_MAX) |
| 571 | default_vmode = vmode; |
| 572 | } |
| 573 | else if (!strncmp(this_opt, "cmode:", 6)) { |
| 574 | int depth = simple_strtoul(this_opt+6, NULL, 0); |
| 575 | switch (depth) { |
| 576 | case 8: |
| 577 | default_cmode = CMODE_8; |
| 578 | break; |
| 579 | case 15: |
| 580 | case 16: |
| 581 | default_cmode = CMODE_16; |
| 582 | break; |
| 583 | } |
| 584 | } |
| 585 | } |
| 586 | return 0; |
| 587 | } |
| 588 | |
| 589 | module_init(valkyriefb_init); |
| 590 | MODULE_LICENSE("GPL"); |