drivers/video/au1100fb.c

   1 /*
   2  * BRIEF MODULE DESCRIPTION
   3  *      Au1100 LCD Driver.
   4  *
   5  * Copyright 2002 MontaVista Software
   6  * Author: MontaVista Software, Inc.
   7  *              ppopov@mvista.com or source@mvista.com
   8  *
   9  * Copyright 2002 Alchemy Semiconductor
  10  * Author: Alchemy Semiconductor
  11  *
  12  * Based on:
  13  * linux/drivers/video/skeletonfb.c -- Skeleton for a frame buffer device
  14  *  Created 28 Dec 1997 by Geert Uytterhoeven
  15  *
  16  *  This program is free software; you can redistribute  it and/or modify it
  17  *  under  the terms of  the GNU General  Public License as published by the
  18  *  Free Software Foundation;  either version 2 of the  License, or (at your
  19  *  option) any later version.
  20  *
  21  *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
  22  *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
  23  *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
  24  *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
  25  *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  26  *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
  27  *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
  28  *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
  29  *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  30  *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  *
  32  *  You should have received a copy of the  GNU General Public License along
  33  *  with this program; if not, write  to the Free Software Foundation, Inc.,
  34  *  675 Mass Ave, Cambridge, MA 02139, USA.
  35  */
  36
  37 #include <linux/module.h>
  38 #include <linux/kernel.h>
  39 #include <linux/errno.h>
  40 #include <linux/string.h>
  41 #include <linux/mm.h>
  42 #include <linux/tty.h>
  43 #include <linux/slab.h>
  44 #include <linux/delay.h>
  45 #include <linux/fb.h>
  46 #include <linux/init.h>
  47 #include <linux/pci.h>
  48
  49 #include <asm/au1000.h>
  50 #include <asm/pb1100.h>
  51 #include "au1100fb.h"
  52
  53 #include <video/fbcon.h>
  54 #include <video/fbcon-mfb.h>
  55 #include <video/fbcon-cfb2.h>
  56 #include <video/fbcon-cfb4.h>
  57 #include <video/fbcon-cfb8.h>
  58 #include <video/fbcon-cfb16.h>
  59
  60 /*
  61  * Sanity check. If this is a new Au1100 based board, search for
  62  * the PB1100 ifdefs to make sure you modify the code accordingly.
  63  */
  64 #if defined(CONFIG_MIPS_PB1100) || defined(CONFIG_MIPS_DB1100) || defined(CONFIG_MIPS_HYDROGEN3)
  65 #else
  66 error Unknown Au1100 board
  67 #endif
  68
  69 #define CMAPSIZE 16
  70
  71 static int my_lcd_index; /* default is zero */
  72 struct known_lcd_panels *p_lcd;
  73 AU1100_LCD *p_lcd_reg = (AU1100_LCD *)AU1100_LCD_ADDR;
  74
  75 struct au1100fb_info {
  76         struct fb_info_gen gen;
  77         unsigned long fb_virt_start;
  78         unsigned long fb_size;
  79         unsigned long fb_phys;
  80         int mmaped;
  81         int nohwcursor;
  82
  83         struct { unsigned red, green, blue, pad; } palette[256];
  84
  85 #if defined(FBCON_HAS_CFB16)
  86         u16 fbcon_cmap16[16];
  87 #endif
  88 };
  89
  90
  91 struct au1100fb_par {
  92         struct fb_var_screeninfo var;
  93
  94         int line_length;  // in bytes
  95         int cmap_len;     // color-map length
  96 };
  97
  98
  99 static struct au1100fb_info fb_info;
 100 static struct au1100fb_par current_par;
 101 static struct display disp;
 102
 103 int au1100fb_init(void);
 104 void au1100fb_setup(char *options, int *ints);
 105 static int au1100fb_mmap(struct fb_info *fb, struct file *file,
 106                 struct vm_area_struct *vma);
 107 static int au1100_blank(int blank_mode, struct fb_info_gen *info);
 108 static int au1100fb_ioctl(struct inode *inode, struct file *file, u_int cmd,
 109                           u_long arg, int con, struct fb_info *info);
 110
 111 void au1100_nocursor(struct display *p, int mode, int xx, int yy){};
 112
 113 static struct fb_ops au1100fb_ops = {
 114         owner:          THIS_MODULE,
 115         fb_get_fix:     fbgen_get_fix,
 116         fb_get_var:     fbgen_get_var,
 117         fb_set_var:     fbgen_set_var,
 118         fb_get_cmap:    fbgen_get_cmap,
 119         fb_set_cmap:    fbgen_set_cmap,
 120         fb_pan_display: fbgen_pan_display,
 121         fb_ioctl:       au1100fb_ioctl,
 122         fb_mmap:        au1100fb_mmap,
 123 };
 124
 125 static void au1100_detect(void)
 126 {
 127         /*
 128          *  This function should detect the current video mode settings
 129          *  and store it as the default video mode
 130          */
 131
 132         /*
 133          * Yeh, well, we're not going to change any settings so we're
 134          * always stuck with the default ...
 135          */
 136
 137 }
 138
 139 static int au1100_encode_fix(struct fb_fix_screeninfo *fix,
 140                 const void *_par, struct fb_info_gen *_info)
 141 {
 142         struct au1100fb_info *info = (struct au1100fb_info *) _info;
 143         struct au1100fb_par *par = (struct au1100fb_par *) _par;
 144         struct fb_var_screeninfo *var = &par->var;
 145
 146         memset(fix, 0, sizeof(struct fb_fix_screeninfo));
 147
 148         fix->smem_start = info->fb_phys;
 149         fix->smem_len = info->fb_size;
 150         fix->type = FB_TYPE_PACKED_PIXELS;
 151         fix->type_aux = 0;
 152         fix->visual = (var->bits_per_pixel == 8) ?
 153                 FB_VISUAL_PSEUDOCOLOR   : FB_VISUAL_TRUECOLOR;
 154         fix->ywrapstep = 0;
 155         fix->xpanstep = 1;
 156         fix->ypanstep = 1;
 157         fix->line_length = current_par.line_length;
 158         return 0;
 159 }
 160
 161 static void set_color_bitfields(struct fb_var_screeninfo *var)
 162 {
 163         switch (var->bits_per_pixel) {
 164         case 8:
 165                 var->red.offset = 0;
 166                 var->red.length = 8;
 167                 var->green.offset = 0;
 168                 var->green.length = 8;
 169                 var->blue.offset = 0;
 170                 var->blue.length = 8;
 171                 var->transp.offset = 0;
 172                 var->transp.length = 0;
 173                 break;
 174         case 16:        /* RGB 565 */
 175                 var->red.offset = 11;
 176                 var->red.length = 5;
 177                 var->green.offset = 5;
 178                 var->green.length = 6;
 179                 var->blue.offset = 0;
 180                 var->blue.length = 5;
 181                 var->transp.offset = 0;
 182                 var->transp.length = 0;
 183                 break;
 184         }
 185
 186         var->red.msb_right = 0;
 187         var->green.msb_right = 0;
 188         var->blue.msb_right = 0;
 189         var->transp.msb_right = 0;
 190 }
 191
 192 static int au1100_decode_var(const struct fb_var_screeninfo *var,
 193                 void *_par, struct fb_info_gen *_info)
 194 {
 195
 196         struct au1100fb_par *par = (struct au1100fb_par *)_par;
 197
 198         /*
 199          * Don't allow setting any of these yet: xres and yres don't
 200          * make sense for LCD panels.
 201          */
 202         if (var->xres != p_lcd->xres ||
 203             var->yres != p_lcd->yres ||
 204             var->xres != p_lcd->xres ||
 205             var->yres != p_lcd->yres) {
 206                 return -EINVAL;
 207         }
 208         if(var->bits_per_pixel != p_lcd->bpp) {
 209                 return -EINVAL;
 210         }
 211
 212         memset(par, 0, sizeof(struct au1100fb_par));
 213         par->var = *var;
 214
 215         /* FIXME */
 216         switch (var->bits_per_pixel) {
 217                 case 8:
 218                         par->var.bits_per_pixel = 8;
 219                         break;
 220                 case 16:
 221                         par->var.bits_per_pixel = 16;
 222                         break;
 223                 default:
 224                         printk("color depth %d bpp not supported\n",
 225                                         var->bits_per_pixel);
 226                         return -EINVAL;
 227
 228         }
 229         set_color_bitfields(&par->var);
 230         par->cmap_len = (par->var.bits_per_pixel == 8) ? 256 : 16;
 231         return 0;
 232 }
 233
 234 static int au1100_encode_var(struct fb_var_screeninfo *var,
 235                 const void *par, struct fb_info_gen *_info)
 236 {
 237
 238         *var = ((struct au1100fb_par *)par)->var;
 239         return 0;
 240 }
 241
 242 static void
 243 au1100_get_par(void *_par, struct fb_info_gen *_info)
 244 {
 245         *(struct au1100fb_par *)_par = current_par;
 246 }
 247
 248 static void au1100_set_par(const void *par, struct fb_info_gen *info)
 249 {
 250         /* nothing to do: we don't change any settings */
 251 }
 252
 253 static int au1100_getcolreg(unsigned regno, unsigned *red, unsigned *green,
 254                          unsigned *blue, unsigned *transp,
 255                          struct fb_info *info)
 256 {
 257
 258         struct au1100fb_info* i = (struct au1100fb_info*)info;
 259
 260         if (regno > 255)
 261                 return 1;
 262
 263         *red    = i->palette[regno].red;
 264         *green  = i->palette[regno].green;
 265         *blue   = i->palette[regno].blue;
 266         *transp = 0;
 267
 268         return 0;
 269 }
 270
 271 static int au1100_setcolreg(unsigned regno, unsigned red, unsigned green,
 272                          unsigned blue, unsigned transp,
 273                          struct fb_info *info)
 274 {
 275         struct au1100fb_info* i = (struct au1100fb_info *)info;
 276         u32 rgbcol;
 277
 278         if (regno > 255)
 279                 return 1;
 280
 281         i->palette[regno].red    = red;
 282         i->palette[regno].green  = green;
 283         i->palette[regno].blue   = blue;
 284
 285         switch(p_lcd->bpp) {
 286 #ifdef FBCON_HAS_CFB8
 287         case 8:
 288                 red >>= 10;
 289                 green >>= 10;
 290                 blue >>= 10;
 291                 p_lcd_reg->lcd_pallettebase[regno] = (blue&0x1f) |
 292                         ((green&0x3f)<<5) | ((red&0x1f)<<11);
 293                 break;
 294 #endif
 295 #ifdef FBCON_HAS_CFB16
 296         case 16:
 297                 i->fbcon_cmap16[regno] =
 298                         ((red & 0xf800) >> 0) |
 299                         ((green & 0xfc00) >> 5) |
 300                         ((blue & 0xf800) >> 11);
 301                 break;
 302 #endif
 303         default:
 304                 break;
 305         }
 306
 307         return 0;
 308 }
 309
 310
 311 static int  au1100_blank(int blank_mode, struct fb_info_gen *_info)
 312 {
 313
 314         switch (blank_mode) {
 315         case VESA_NO_BLANKING:
 316                 /* turn on panel */
 317                 //printk("turn on panel\n");
 318 #ifdef CONFIG_MIPS_PB1100
 319                 p_lcd_reg->lcd_control |= LCD_CONTROL_GO;
 320                 au_writew(au_readw(PB1100_G_CONTROL) | p_lcd->mode_backlight,
 321                         PB1100_G_CONTROL);
 322 #endif
 323 #ifdef CONFIG_MIPS_HYDROGEN3
 324                 /*  Turn controller & power supply on,  GPIO213 */
 325                 au_writel(0x20002000, 0xB1700008);
 326                 au_writel(0x00040000, 0xB1900108);
 327                 au_writel(0x01000100, 0xB1700008);
 328 #endif
 329                 au_sync();
 330                 break;
 331
 332         case VESA_VSYNC_SUSPEND:
 333         case VESA_HSYNC_SUSPEND:
 334         case VESA_POWERDOWN:
 335                 /* turn off panel */
 336                 //printk("turn off panel\n");
 337 #ifdef CONFIG_MIPS_PB1100
 338                 au_writew(au_readw(PB1100_G_CONTROL) & ~p_lcd->mode_backlight,
 339                         PB1100_G_CONTROL);
 340                 p_lcd_reg->lcd_control &= ~LCD_CONTROL_GO;
 341 #endif
 342                 au_sync();
 343                 break;
 344         default:
 345                 break;
 346
 347         }
 348         return 0;
 349 }
 350
 351 static void au1100_set_disp(const void *unused, struct display *disp,
 352                          struct fb_info_gen *info)
 353 {
 354         disp->screen_base = (char *)fb_info.fb_virt_start;
 355
 356         switch (disp->var.bits_per_pixel) {
 357 #ifdef FBCON_HAS_CFB8
 358         case 8:
 359                 disp->dispsw = &fbcon_cfb8;
 360                 if (fb_info.nohwcursor)
 361                         fbcon_cfb8.cursor = au1100_nocursor;
 362                 break;
 363 #endif
 364 #ifdef FBCON_HAS_CFB16
 365         case 16:
 366                 disp->dispsw = &fbcon_cfb16;
 367                 disp->dispsw_data = fb_info.fbcon_cmap16;
 368                 if (fb_info.nohwcursor)
 369                         fbcon_cfb16.cursor = au1100_nocursor;
 370                 break;
 371 #endif
 372         default:
 373                 disp->dispsw = &fbcon_dummy;
 374                 disp->dispsw_data = NULL;
 375                 break;
 376         }
 377 }
 378
 379 static int
 380 au1100fb_mmap(struct fb_info *_fb,
 381              struct file *file,
 382              struct vm_area_struct *vma)
 383 {
 384         unsigned int len;
 385         unsigned long start=0, off;
 386         struct au1100fb_info *fb = (struct au1100fb_info *)_fb;
 387
 388         if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT)) {
 389                 return -EINVAL;
 390         }
 391
 392         start = fb_info.fb_phys & PAGE_MASK;
 393         len = PAGE_ALIGN((start & ~PAGE_MASK) + fb_info.fb_size);
 394
 395         off = vma->vm_pgoff << PAGE_SHIFT;
 396
 397         if ((vma->vm_end - vma->vm_start + off) > len) {
 398                 return -EINVAL;
 399         }
 400
 401         off += start;
 402         vma->vm_pgoff = off >> PAGE_SHIFT;
 403
 404         pgprot_val(vma->vm_page_prot) &= ~_CACHE_MASK;
 405         //pgprot_val(vma->vm_page_prot) |= _CACHE_CACHABLE_NONCOHERENT;
 406         pgprot_val(vma->vm_page_prot) |= (6 << 9); //CCA=6
 407
 408         /* This is an IO map - tell maydump to skip this VMA */
 409         vma->vm_flags |= VM_IO;
 410
 411         if (io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT,
 412                                 vma->vm_end - vma->vm_start,
 413                                 vma->vm_page_prot)) {
 414                 return -EAGAIN;
 415         }
 416
 417         fb->mmaped = 1;
 418         return 0;
 419 }
 420
 421 int au1100_pan_display(const struct fb_var_screeninfo *var,
 422                        struct fb_info_gen *info)
 423 {
 424         return 0;
 425 }
 426
 427 static int au1100fb_ioctl(struct inode *inode, struct file *file, u_int cmd,
 428                           u_long arg, int con, struct fb_info *info)
 429 {
 430         /* nothing to do yet */
 431         return -EINVAL;
 432 }
 433
 434 static struct fbgen_hwswitch au1100_switch = {
 435         au1100_detect,
 436         au1100_encode_fix,
 437         au1100_decode_var,
 438         au1100_encode_var,
 439         au1100_get_par,
 440         au1100_set_par,
 441         au1100_getcolreg,
 442         au1100_setcolreg,
 443         au1100_pan_display,
 444         au1100_blank,
 445         au1100_set_disp
 446 };
 447
 448
 449 int au1100_setmode(void)
 450 {
 451         int words;
 452
 453         /* FIXME Need to accomodate for swivel mode and 12bpp, <8bpp*/
 454         switch (p_lcd->mode_control & LCD_CONTROL_SM)
 455         {
 456                 case LCD_CONTROL_SM_0:
 457                 case LCD_CONTROL_SM_180:
 458                 words = (p_lcd->xres * p_lcd->yres * p_lcd->bpp) / 32;
 459                         break;
 460                 case LCD_CONTROL_SM_90:
 461                 case LCD_CONTROL_SM_270:
 462                         /* is this correct? */
 463                 words = (p_lcd->xres * p_lcd->bpp) / 8;
 464                         break;
 465                 default:
 466                         printk("mode_control reg not initialized\n");
 467                         return -EINVAL;
 468         }
 469
 470         /*
 471          * Setup LCD controller
 472          */
 473
 474         p_lcd_reg->lcd_control = p_lcd->mode_control;
 475         p_lcd_reg->lcd_intstatus = 0;
 476         p_lcd_reg->lcd_intenable = 0;
 477         p_lcd_reg->lcd_horztiming = p_lcd->mode_horztiming;
 478         p_lcd_reg->lcd_verttiming = p_lcd->mode_verttiming;
 479         p_lcd_reg->lcd_clkcontrol = p_lcd->mode_clkcontrol;
 480         p_lcd_reg->lcd_words = words - 1;
 481         p_lcd_reg->lcd_dmaaddr0 = fb_info.fb_phys;
 482
 483         /* turn on panel */
 484 #ifdef CONFIG_MIPS_PB1100
 485         au_writew(au_readw(PB1100_G_CONTROL) | p_lcd->mode_backlight,
 486                         PB1100_G_CONTROL);
 487 #endif
 488 #ifdef CONFIG_MIPS_HYDROGEN3
 489         /*  Turn controller & power supply on,  GPIO213 */
 490         au_writel(0x20002000, 0xB1700008);
 491         au_writel(0x00040000, 0xB1900108);
 492         au_writel(0x01000100, 0xB1700008);
 493 #endif
 494
 495         p_lcd_reg->lcd_control |= LCD_CONTROL_GO;
 496
 497         return 0;
 498 }
 499
 500
 501 int __init au1100fb_init(void)
 502 {
 503         uint32 sys_clksrc;
 504         unsigned long page;
 505
 506         /*
 507         * Get the panel information/display mode and update the registry
 508         */
 509         p_lcd = &panels[my_lcd_index];
 510
 511         switch (p_lcd->mode_control & LCD_CONTROL_SM)
 512         {
 513                 case LCD_CONTROL_SM_0:
 514                 case LCD_CONTROL_SM_180:
 515                 p_lcd->xres =
 516                         (p_lcd->mode_horztiming & LCD_HORZTIMING_PPL) + 1;
 517                 p_lcd->yres =
 518                         (p_lcd->mode_verttiming & LCD_VERTTIMING_LPP) + 1;
 519                         break;
 520                 case LCD_CONTROL_SM_90:
 521                 case LCD_CONTROL_SM_270:
 522                 p_lcd->yres =
 523                         (p_lcd->mode_horztiming & LCD_HORZTIMING_PPL) + 1;
 524                 p_lcd->xres =
 525                         (p_lcd->mode_verttiming & LCD_VERTTIMING_LPP) + 1;
 526                         break;
 527         }
 528
 529         /*
 530          * Panel dimensions x bpp must be divisible by 32
 531          */
 532         if (((p_lcd->yres * p_lcd->bpp) % 32) != 0)
 533                 printk("VERT %% 32\n");
 534         if (((p_lcd->xres * p_lcd->bpp) % 32) != 0)
 535                 printk("HORZ %% 32\n");
 536
 537         /*
 538          * Allocate LCD framebuffer from system memory
 539          */
 540         fb_info.fb_size = (p_lcd->xres * p_lcd->yres * p_lcd->bpp) / 8;
 541
 542         current_par.var.xres = p_lcd->xres;
 543         current_par.var.xres_virtual = p_lcd->xres;
 544         current_par.var.yres = p_lcd->yres;
 545         current_par.var.yres_virtual = p_lcd->yres;
 546         current_par.var.bits_per_pixel = p_lcd->bpp;
 547
 548         /* FIX!!! only works for 8/16 bpp */
 549         current_par.line_length = p_lcd->xres * p_lcd->bpp / 8; /* in bytes */
 550         fb_info.fb_virt_start = (unsigned long )
 551                 __get_free_pages(GFP_ATOMIC | GFP_DMA,
 552                                 get_order(fb_info.fb_size + 0x1000));
 553         if (!fb_info.fb_virt_start) {
 554                 printk("Unable to allocate fb memory\n");
 555                 return -ENOMEM;
 556         }
 557         fb_info.fb_phys = virt_to_bus((void *)fb_info.fb_virt_start);
 558
 559         /*
 560          * Set page reserved so that mmap will work. This is necessary
 561          * since we'll be remapping normal memory.
 562          */
 563         for (page = fb_info.fb_virt_start;
 564              page < PAGE_ALIGN(fb_info.fb_virt_start + fb_info.fb_size);
 565              page += PAGE_SIZE) {
 566                 SetPageReserved(virt_to_page(page));
 567         }
 568
 569         memset((void *)fb_info.fb_virt_start, 0, fb_info.fb_size);
 570
 571         /* set freqctrl now to allow more time to stabilize */
 572         /* zero-out out LCD bits */
 573         sys_clksrc = au_readl(SYS_CLKSRC) & ~0x000003e0;
 574         sys_clksrc |= p_lcd->mode_toyclksrc;
 575         au_writel(sys_clksrc, SYS_CLKSRC);
 576
 577         /* FIXME add check to make sure auxpll is what is expected! */
 578         au1100_setmode();
 579
 580         fb_info.gen.parsize = sizeof(struct au1100fb_par);
 581         fb_info.gen.fbhw = &au1100_switch;
 582
 583         strcpy(fb_info.gen.info.modename, "Au1100 LCD");
 584         fb_info.gen.info.changevar = NULL;
 585         fb_info.gen.info.node = -1;
 586
 587         fb_info.gen.info.fbops = &au1100fb_ops;
 588         fb_info.gen.info.disp = &disp;
 589         fb_info.gen.info.switch_con = &fbgen_switch;
 590         fb_info.gen.info.updatevar = &fbgen_update_var;
 591         fb_info.gen.info.blank = &fbgen_blank;
 592         fb_info.gen.info.flags = FBINFO_FLAG_DEFAULT;
 593
 594         /* This should give a reasonable default video mode */
 595         fbgen_get_var(&disp.var, -1, &fb_info.gen.info);
 596         fbgen_do_set_var(&disp.var, 1, &fb_info.gen);
 597         fbgen_set_disp(-1, &fb_info.gen);
 598         fbgen_install_cmap(0, &fb_info.gen);
 599         if (register_framebuffer(&fb_info.gen.info) < 0)
 600                 return -EINVAL;
 601         printk(KERN_INFO "fb%d: %s frame buffer device\n",
 602                         GET_FB_IDX(fb_info.gen.info.node),
 603                         fb_info.gen.info.modename);
 604
 605         return 0;
 606 }
 607
 608
 609 void au1100fb_cleanup(struct fb_info *info)
 610 {
 611         unregister_framebuffer(info);
 612 }
 613
 614
 615 void au1100fb_setup(char *options, int *ints)
 616 {
 617         char* this_opt;
 618         int i;
 619         int num_panels = sizeof(panels)/sizeof(struct known_lcd_panels);
 620
 621
 622         if (!options || !*options)
 623                 return;
 624
 625         for(this_opt=strtok(options, ","); this_opt;
 626             this_opt=strtok(NULL, ",")) {
 627                 if (!strncmp(this_opt, "panel:", 6)) {
 628 #if defined(CONFIG_MIPS_PB1100) || defined(CONFIG_MIPS_DB1100)
 629                         /* Read Pb1100 Switch S10 ? */
 630                         if (!strncmp(this_opt+6, "s10", 3))
 631                         {
 632                                 int panel;
 633                                 panel = *(volatile int *)0xAE000008; /* BCSR SWITCHES */
 634                                 panel >>= 8;
 635                                 panel &= 0x0F;
 636                                 if (panel >= num_panels) panel = 0;
 637                                 my_lcd_index = panel;
 638                         }
 639                         else
 640 #endif
 641                         /* Get the panel name, everything else if fixed */
 642                         for (i=0; i<num_panels; i++) {
 643                                 if (!strncmp(this_opt+6, panels[i].panel_name,
 644                                                         strlen(this_opt))) {
 645                                         my_lcd_index = i;
 646                                         break;
 647                                 }
 648                         }
 649                 }
 650                 else if (!strncmp(this_opt, "nohwcursor", 10)) {
 651                         printk("nohwcursor\n");
 652                         fb_info.nohwcursor = 1;
 653                 }
 654         }
 655
 656         printk("au1100fb: Panel %d %s\n", my_lcd_index,
 657                 panels[my_lcd_index].panel_name);
 658 }
 659
 660
 661
 662 #ifdef MODULE
 663 MODULE_LICENSE("GPL");
 664 int init_module(void)
 665 {
 666         return au1100fb_init();
 667 }
 668
 669 void cleanup_module(void)
 670 {
 671         au1100fb_cleanup(void);
 672 }
 673
 674 MODULE_AUTHOR("Pete Popov <ppopov@mvista.com>");
 675 MODULE_DESCRIPTION("Au1100 LCD framebuffer device driver");
 676 #endif /* MODULE */