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   1 /*
   2  * BRIEF MODULE DESCRIPTION
   3  *      Au1100 LCD Driver.
   4  *
   5  * Rewritten for 2.6 by Embedded Alley Solutions
   6  *      <source@embeddedalley.com>, based on submissions by
   7  *      Karl Lessard <klessard@sunrisetelecom.com>
   8  *      <c.pellegrin@exadron.com>
   9  *
  10  * Copyright 2002 MontaVista Software
  11  * Author: MontaVista Software, Inc.
  12  *              ppopov@mvista.com or source@mvista.com
  13  *
  14  * Copyright 2002 Alchemy Semiconductor
  15  * Author: Alchemy Semiconductor
  16  *
  17  * Based on:
  18  * linux/drivers/video/skeletonfb.c -- Skeleton for a frame buffer device
  19  *  Created 28 Dec 1997 by Geert Uytterhoeven
  20  *
  21  *  This program is free software; you can redistribute  it and/or modify it
  22  *  under  the terms of  the GNU General  Public License as published by the
  23  *  Free Software Foundation;  either version 2 of the  License, or (at your
  24  *  option) any later version.
  25  *
  26  *  THIS  SOFTWARE  IS PROVIDED   ``AS  IS'' AND   ANY  EXPRESS OR IMPLIED
  27  *  WARRANTIES,   INCLUDING, BUT NOT  LIMITED  TO, THE IMPLIED WARRANTIES OF
  28  *  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN
  29  *  NO  EVENT  SHALL   THE AUTHOR  BE    LIABLE FOR ANY   DIRECT, INDIRECT,
  30  *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  31  *  NOT LIMITED   TO, PROCUREMENT OF  SUBSTITUTE GOODS  OR SERVICES; LOSS OF
  32  *  USE, DATA,  OR PROFITS; OR  BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
  33  *  ANY THEORY OF LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT
  34  *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  35  *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  36  *
  37  *  You should have received a copy of the  GNU General Public License along
  38  *  with this program; if not, write  to the Free Software Foundation, Inc.,
  39  *  675 Mass Ave, Cambridge, MA 02139, USA.
  40  */
  41 #include <linux/config.h>
  42 #include <linux/module.h>
  43 #include <linux/kernel.h>
  44 #include <linux/errno.h>
  45 #include <linux/string.h>
  46 #include <linux/mm.h>
  47 #include <linux/fb.h>
  48 #include <linux/init.h>
  49 #include <linux/interrupt.h>
  50 #include <linux/ctype.h>
  51 #include <linux/dma-mapping.h>
  52 #include <linux/platform_device.h>
  53
  54 #include <asm/mach-au1x00/au1000.h>
  55
  56 #define DEBUG 0
  57
  58 #include "au1100fb.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)
  65   #include <asm/mach-pb1x00/pb1100.h>
  66 #elif defined(CONFIG_MIPS_DB1100)
  67   #include <asm/mach-db1x00/db1x00.h>
  68 #else
  69   #error "Unknown Au1100 board, Au1100 FB driver not supported"
  70 #endif
  71
  72 #define DRIVER_NAME "au1100fb"
  73 #define DRIVER_DESC "LCD controller driver for AU1100 processors"
  74
  75 #define to_au1100fb_device(_info) \
  76           (_info ? container_of(_info, struct au1100fb_device, info) : NULL);
  77
  78 /* Bitfields format supported by the controller. Note that the order of formats
  79  * SHOULD be the same as in the LCD_CONTROL_SBPPF field, so we can retrieve the
  80  * right pixel format by doing rgb_bitfields[LCD_CONTROL_SBPPF_XXX >> LCD_CONTROL_SBPPF]
  81  */
  82 struct fb_bitfield rgb_bitfields[][4] =
  83 {
  84         /*     Red,        Green,        Blue,       Transp   */
  85         { { 10, 6, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 0, 0, 0 } },
  86         { { 11, 5, 0 }, { 5, 6, 0 }, { 0, 5, 0 }, { 0, 0, 0 } },
  87         { { 11, 5, 0 }, { 6, 5, 0 }, { 0, 6, 0 }, { 0, 0, 0 } },
  88         { { 10, 5, 0 }, { 5, 5, 0 }, { 0, 5, 0 }, { 15, 1, 0 } },
  89         { { 11, 5, 0 }, { 6, 5, 0 }, { 1, 5, 0 }, { 0, 1, 0 } },
  90
  91         /* The last is used to describe 12bpp format */
  92         { { 8, 4, 0 },  { 4, 4, 0 }, { 0, 4, 0 }, { 0, 0, 0 } },
  93 };
  94
  95 static struct fb_fix_screeninfo au1100fb_fix __initdata = {
  96         .id             = "AU1100 FB",
  97         .xpanstep       = 1,
  98         .ypanstep       = 1,
  99         .type           = FB_TYPE_PACKED_PIXELS,
 100         .accel          = FB_ACCEL_NONE,
 101 };
 102
 103 static struct fb_var_screeninfo au1100fb_var __initdata = {
 104         .activate       = FB_ACTIVATE_NOW,
 105         .height         = -1,
 106         .width          = -1,
 107         .vmode          = FB_VMODE_NONINTERLACED,
 108 };
 109
 110 static struct au1100fb_drv_info drv_info;
 111
 112 /*
 113  * Set hardware with var settings. This will enable the controller with a specific
 114  * mode, normally validated with the fb_check_var method
 115          */
 116 int au1100fb_setmode(struct au1100fb_device *fbdev)
 117 {
 118         struct fb_info *info = &fbdev->info;
 119         u32 words;
 120         int index;
 121
 122         if (!fbdev)
 123                 return -EINVAL;
 124
 125         /* Update var-dependent FB info */
 126         if (panel_is_active(fbdev->panel) || panel_is_color(fbdev->panel)) {
 127                 if (info->var.bits_per_pixel <= 8) {
 128                         /* palettized */
 129                         info->var.red.offset    = 0;
 130                         info->var.red.length    = info->var.bits_per_pixel;
 131                         info->var.red.msb_right = 0;
 132
 133                         info->var.green.offset  = 0;
 134                         info->var.green.length  = info->var.bits_per_pixel;
 135                         info->var.green.msb_right = 0;
 136
 137                         info->var.blue.offset   = 0;
 138                         info->var.blue.length   = info->var.bits_per_pixel;
 139                         info->var.blue.msb_right = 0;
 140
 141                         info->var.transp.offset = 0;
 142                         info->var.transp.length = 0;
 143                         info->var.transp.msb_right = 0;
 144
 145                         info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
 146                         info->fix.line_length = info->var.xres_virtual /
 147                                                         (8/info->var.bits_per_pixel);
 148                 } else {
 149                         /* non-palettized */
 150                         index = (fbdev->panel->control_base & LCD_CONTROL_SBPPF_MASK) >> LCD_CONTROL_SBPPF_BIT;
 151                         info->var.red = rgb_bitfields[index][0];
 152                         info->var.green = rgb_bitfields[index][1];
 153                         info->var.blue = rgb_bitfields[index][2];
 154                         info->var.transp = rgb_bitfields[index][3];
 155
 156                         info->fix.visual = FB_VISUAL_TRUECOLOR;
 157                         info->fix.line_length = info->var.xres_virtual << 1; /* depth=16 */
 158         }
 159         } else {
 160                 /* mono */
 161                 info->fix.visual = FB_VISUAL_MONO10;
 162                 info->fix.line_length = info->var.xres_virtual / 8;
 163         }
 164
 165         info->screen_size = info->fix.line_length * info->var.yres_virtual;
 166
 167         /* Determine BPP mode and format */
 168         fbdev->regs->lcd_control = fbdev->panel->control_base |
 169                             ((info->var.rotate/90) << LCD_CONTROL_SM_BIT);
 170
 171         fbdev->regs->lcd_intenable = 0;
 172         fbdev->regs->lcd_intstatus = 0;
 173
 174         fbdev->regs->lcd_horztiming = fbdev->panel->horztiming;
 175
 176         fbdev->regs->lcd_verttiming = fbdev->panel->verttiming;
 177
 178         fbdev->regs->lcd_clkcontrol = fbdev->panel->clkcontrol_base;
 179
 180         fbdev->regs->lcd_dmaaddr0 = LCD_DMA_SA_N(fbdev->fb_phys);
 181
 182         if (panel_is_dual(fbdev->panel)) {
 183                 /* Second panel display seconf half of screen if possible,
 184                  * otherwise display the same as the first panel */
 185                 if (info->var.yres_virtual >= (info->var.yres << 1)) {
 186                         fbdev->regs->lcd_dmaaddr1 = LCD_DMA_SA_N(fbdev->fb_phys +
 187                                                           (info->fix.line_length *
 188                                                           (info->var.yres_virtual >> 1)));
 189                 } else {
 190                         fbdev->regs->lcd_dmaaddr1 = LCD_DMA_SA_N(fbdev->fb_phys);
 191                 }
 192         }
 193
 194         words = info->fix.line_length / sizeof(u32);
 195         if (!info->var.rotate || (info->var.rotate == 180)) {
 196                 words *= info->var.yres_virtual;
 197                 if (info->var.rotate /* 180 */) {
 198                         words -= (words % 8); /* should be divisable by 8 */
 199                 }
 200         }
 201         fbdev->regs->lcd_words = LCD_WRD_WRDS_N(words);
 202
 203         fbdev->regs->lcd_pwmdiv = 0;
 204         fbdev->regs->lcd_pwmhi = 0;
 205
 206         /* Resume controller */
 207         fbdev->regs->lcd_control |= LCD_CONTROL_GO;
 208
 209         return 0;
 210 }
 211
 212 /* fb_setcolreg
 213  * Set color in LCD palette.
 214  */
 215 int au1100fb_fb_setcolreg(unsigned regno, unsigned red, unsigned green, unsigned blue, unsigned transp, struct fb_info *fbi)
 216 {
 217         struct au1100fb_device *fbdev;
 218         u32 *palette;
 219         u32 value;
 220
 221         fbdev = to_au1100fb_device(fbi);
 222         palette = fbdev->regs->lcd_pallettebase;
 223
 224         if (regno > (AU1100_LCD_NBR_PALETTE_ENTRIES - 1))
 225                 return -EINVAL;
 226
 227         if (fbi->var.grayscale) {
 228                 /* Convert color to grayscale */
 229                 red = green = blue =
 230                         (19595 * red + 38470 * green + 7471 * blue) >> 16;
 231         }
 232
 233         if (fbi->fix.visual == FB_VISUAL_TRUECOLOR) {
 234                 /* Place color in the pseudopalette */
 235                 if (regno > 16)
 236                         return -EINVAL;
 237
 238                 palette = (u32*)fbi->pseudo_palette;
 239
 240                 red   >>= (16 - fbi->var.red.length);
 241                 green >>= (16 - fbi->var.green.length);
 242                 blue  >>= (16 - fbi->var.blue.length);
 243
 244                 value = (red   << fbi->var.red.offset)  |
 245                         (green << fbi->var.green.offset)|
 246                         (blue  << fbi->var.blue.offset);
 247                 value &= 0xFFFF;
 248
 249         } else if (panel_is_active(fbdev->panel)) {
 250                 /* COLOR TFT PALLETTIZED (use RGB 565) */
 251                 value = (red & 0xF800)|((green >> 5) & 0x07E0)|((blue >> 11) & 0x001F);
 252                 value &= 0xFFFF;
 253
 254         } else if (panel_is_color(fbdev->panel)) {
 255                 /* COLOR STN MODE */
 256                 value = (((panel_swap_rgb(fbdev->panel) ? blue : red) >> 12) & 0x000F) |
 257                         ((green >> 8) & 0x00F0) |
 258                         (((panel_swap_rgb(fbdev->panel) ? red : blue) >> 4) & 0x0F00);
 259                 value &= 0xFFF;
 260         } else {
 261                 /* MONOCHROME MODE */
 262                 value = (green >> 12) & 0x000F;
 263                 value &= 0xF;
 264         }
 265
 266         palette[regno] = value;
 267
 268         return 0;
 269 }
 270
 271 /* fb_blank
 272  * Blank the screen. Depending on the mode, the screen will be
 273  * activated with the backlight color, or desactivated
 274  */
 275 int au1100fb_fb_blank(int blank_mode, struct fb_info *fbi)
 276 {
 277         struct au1100fb_device *fbdev = to_au1100fb_device(fbi);
 278
 279         print_dbg("fb_blank %d %p", blank_mode, fbi);
 280
 281         switch (blank_mode) {
 282
 283         case VESA_NO_BLANKING:
 284                         /* Turn on panel */
 285                         fbdev->regs->lcd_control |= LCD_CONTROL_GO;
 286 #ifdef CONFIG_MIPS_PB1100
 287                         if (drv_info.panel_idx == 1) {
 288                                 au_writew(au_readw(PB1100_G_CONTROL)
 289                                           | (PB1100_G_CONTROL_BL | PB1100_G_CONTROL_VDD),
 290                         PB1100_G_CONTROL);
 291                         }
 292 #endif
 293                 au_sync();
 294                 break;
 295
 296         case VESA_VSYNC_SUSPEND:
 297         case VESA_HSYNC_SUSPEND:
 298         case VESA_POWERDOWN:
 299                         /* Turn off panel */
 300                         fbdev->regs->lcd_control &= ~LCD_CONTROL_GO;
 301 #ifdef CONFIG_MIPS_PB1100
 302                         if (drv_info.panel_idx == 1) {
 303                                 au_writew(au_readw(PB1100_G_CONTROL)
 304                                           & ~(PB1100_G_CONTROL_BL | PB1100_G_CONTROL_VDD),
 305                         PB1100_G_CONTROL);
 306                         }
 307 #endif
 308                 au_sync();
 309                 break;
 310         default:
 311                 break;
 312
 313         }
 314         return 0;
 315 }
 316
 317 /* fb_pan_display
 318  * Pan display in x and/or y as specified
 319  */
 320 int au1100fb_fb_pan_display(struct fb_var_screeninfo *var, struct fb_info *fbi)
 321 {
 322         struct au1100fb_device *fbdev;
 323         int dy;
 324
 325         fbdev = to_au1100fb_device(fbi);
 326
 327         print_dbg("fb_pan_display %p %p", var, fbi);
 328
 329         if (!var || !fbdev) {
 330                 return -EINVAL;
 331         }
 332
 333         if (var->xoffset - fbi->var.xoffset) {
 334                 /* No support for X panning for now! */
 335                 return -EINVAL;
 336         }
 337
 338         print_dbg("fb_pan_display 2 %p %p", var, fbi);
 339         dy = var->yoffset - fbi->var.yoffset;
 340         if (dy) {
 341
 342                 u32 dmaaddr;
 343
 344                 print_dbg("Panning screen of %d lines", dy);
 345
 346                 dmaaddr = fbdev->regs->lcd_dmaaddr0;
 347                 dmaaddr += (fbi->fix.line_length * dy);
 348
 349                 /* TODO: Wait for current frame to finished */
 350                 fbdev->regs->lcd_dmaaddr0 = LCD_DMA_SA_N(dmaaddr);
 351
 352                 if (panel_is_dual(fbdev->panel)) {
 353                         dmaaddr = fbdev->regs->lcd_dmaaddr1;
 354                         dmaaddr += (fbi->fix.line_length * dy);
 355                         fbdev->regs->lcd_dmaaddr0 = LCD_DMA_SA_N(dmaaddr);
 356         }
 357         }
 358         print_dbg("fb_pan_display 3 %p %p", var, fbi);
 359
 360         return 0;
 361 }
 362
 363 /* fb_rotate
 364  * Rotate the display of this angle. This doesn't seems to be used by the core,
 365  * but as our hardware supports it, so why not implementing it...
 366  */
 367 void au1100fb_fb_rotate(struct fb_info *fbi, int angle)
 368 {
 369         struct au1100fb_device *fbdev = to_au1100fb_device(fbi);
 370
 371         print_dbg("fb_rotate %p %d", fbi, angle);
 372
 373         if (fbdev && (angle > 0) && !(angle % 90)) {
 374
 375                 fbdev->regs->lcd_control &= ~LCD_CONTROL_GO;
 376
 377                 fbdev->regs->lcd_control &= ~(LCD_CONTROL_SM_MASK);
 378                 fbdev->regs->lcd_control |= ((angle/90) << LCD_CONTROL_SM_BIT);
 379
 380                 fbdev->regs->lcd_control |= LCD_CONTROL_GO;
 381         }
 382 }
 383
 384 /* fb_mmap
 385  * Map video memory in user space. We don't use the generic fb_mmap method mainly
 386  * to allow the use of the TLB streaming flag (CCA=6)
 387  */
 388 int au1100fb_fb_mmap(struct fb_info *fbi, struct vm_area_struct *vma)
 389 {
 390         struct au1100fb_device *fbdev;
 391         unsigned int len;
 392         unsigned long start=0, off;
 393
 394         fbdev = to_au1100fb_device(fbi);
 395
 396         if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT)) {
 397                 return -EINVAL;
 398         }
 399
 400         start = fbdev->fb_phys & PAGE_MASK;
 401         len = PAGE_ALIGN((start & ~PAGE_MASK) + fbdev->fb_len);
 402
 403         off = vma->vm_pgoff << PAGE_SHIFT;
 404
 405         if ((vma->vm_end - vma->vm_start + off) > len) {
 406                 return -EINVAL;
 407         }
 408
 409         off += start;
 410         vma->vm_pgoff = off >> PAGE_SHIFT;
 411
 412         vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
 413         pgprot_val(vma->vm_page_prot) |= (6 << 9); //CCA=6
 414
 415         vma->vm_flags |= VM_IO;
 416
 417         if (io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT,
 418                                 vma->vm_end - vma->vm_start,
 419                                 vma->vm_page_prot)) {
 420                 return -EAGAIN;
 421         }
 422
 423         return 0;
 424 }
 425
 426 static struct fb_ops au1100fb_ops =
 427 {
 428         .owner                  = THIS_MODULE,
 429         .fb_setcolreg           = au1100fb_fb_setcolreg,
 430         .fb_blank               = au1100fb_fb_blank,
 431         .fb_pan_display         = au1100fb_fb_pan_display,
 432         .fb_fillrect            = cfb_fillrect,
 433         .fb_copyarea            = cfb_copyarea,
 434         .fb_imageblit           = cfb_imageblit,
 435         .fb_rotate              = au1100fb_fb_rotate,
 436         .fb_mmap                = au1100fb_fb_mmap,
 437 };
 438
 439
 440 /*-------------------------------------------------------------------------*/
 441
 442 /* AU1100 LCD controller device driver */
 443
 444 int au1100fb_drv_probe(struct device *dev)
 445 {
 446         struct au1100fb_device *fbdev = NULL;
 447         struct resource *regs_res;
 448         unsigned long page;
 449         u32 sys_clksrc;
 450
 451         if (!dev)
 452                         return -EINVAL;
 453
 454         /* Allocate new device private */
 455         if (!(fbdev = kmalloc(sizeof(struct au1100fb_device), GFP_KERNEL))) {
 456                 print_err("fail to allocate device private record");
 457                 return -ENOMEM;
 458         }
 459         memset((void*)fbdev, 0, sizeof(struct au1100fb_device));
 460
 461         fbdev->panel = &known_lcd_panels[drv_info.panel_idx];
 462
 463         dev_set_drvdata(dev, (void*)fbdev);
 464
 465         /* Allocate region for our registers and map them */
 466         if (!(regs_res = platform_get_resource(to_platform_device(dev),
 467                                         IORESOURCE_MEM, 0))) {
 468                 print_err("fail to retrieve registers resource");
 469                 return -EFAULT;
 470         }
 471
 472         au1100fb_fix.mmio_start = regs_res->start;
 473         au1100fb_fix.mmio_len = regs_res->end - regs_res->start + 1;
 474
 475         if (!request_mem_region(au1100fb_fix.mmio_start, au1100fb_fix.mmio_len,
 476                                 DRIVER_NAME)) {
 477                 print_err("fail to lock memory region at 0x%08lx",
 478                                 au1100fb_fix.mmio_start);
 479                 return -EBUSY;
 480         }
 481
 482         fbdev->regs = (struct au1100fb_regs*)KSEG1ADDR(au1100fb_fix.mmio_start);
 483
 484         print_dbg("Register memory map at %p", fbdev->regs);
 485         print_dbg("phys=0x%08x, size=%d", fbdev->regs_phys, fbdev->regs_len);
 486
 487
 488
 489         /* Allocate the framebuffer to the maximum screen size * nbr of video buffers */
 490         fbdev->fb_len = fbdev->panel->xres * fbdev->panel->yres *
 491                         (fbdev->panel->bpp >> 3) * AU1100FB_NBR_VIDEO_BUFFERS;
 492
 493         fbdev->fb_mem = dma_alloc_coherent(dev, PAGE_ALIGN(fbdev->fb_len),
 494                                         &fbdev->fb_phys, GFP_KERNEL);
 495         if (!fbdev->fb_mem) {
 496                 print_err("fail to allocate frambuffer (size: %dK))",
 497                           fbdev->fb_len / 1024);
 498                 return -ENOMEM;
 499         }
 500
 501         au1100fb_fix.smem_start = fbdev->fb_phys;
 502         au1100fb_fix.smem_len = fbdev->fb_len;
 503
 504         /*
 505          * Set page reserved so that mmap will work. This is necessary
 506          * since we'll be remapping normal memory.
 507          */
 508         for (page = (unsigned long)fbdev->fb_mem;
 509              page < PAGE_ALIGN((unsigned long)fbdev->fb_mem + fbdev->fb_len);
 510              page += PAGE_SIZE) {
 511 #if CONFIG_DMA_NONCOHERENT
 512                 SetPageReserved(virt_to_page(CAC_ADDR(page)));
 513 #else
 514                 SetPageReserved(virt_to_page(page));
 515 #endif
 516         }
 517
 518         print_dbg("Framebuffer memory map at %p", fbdev->fb_mem);
 519         print_dbg("phys=0x%08x, size=%dK", fbdev->fb_phys, fbdev->fb_len / 1024);
 520
 521         /* Setup LCD clock to AUX (48 MHz) */
 522         sys_clksrc = au_readl(SYS_CLKSRC) & ~(SYS_CS_ML_MASK | SYS_CS_DL | SYS_CS_CL);
 523         au_writel((sys_clksrc | (1 << SYS_CS_ML_BIT)), SYS_CLKSRC);
 524
 525         /* load the panel info into the var struct */
 526         au1100fb_var.bits_per_pixel = fbdev->panel->bpp;
 527         au1100fb_var.xres = fbdev->panel->xres;
 528         au1100fb_var.xres_virtual = au1100fb_var.xres;
 529         au1100fb_var.yres = fbdev->panel->yres;
 530         au1100fb_var.yres_virtual = au1100fb_var.yres;
 531
 532         fbdev->info.screen_base = fbdev->fb_mem;
 533         fbdev->info.fbops = &au1100fb_ops;
 534         fbdev->info.fix = au1100fb_fix;
 535
 536         if (!(fbdev->info.pseudo_palette = kmalloc(sizeof(u32) * 16, GFP_KERNEL))) {
 537                 return -ENOMEM;
 538         }
 539         memset(fbdev->info.pseudo_palette, 0, sizeof(u32) * 16);
 540
 541         if (fb_alloc_cmap(&fbdev->info.cmap, AU1100_LCD_NBR_PALETTE_ENTRIES, 0) < 0) {
 542                 print_err("Fail to allocate colormap (%d entries)",
 543                            AU1100_LCD_NBR_PALETTE_ENTRIES);
 544                 kfree(fbdev->info.pseudo_palette);
 545                 return -EFAULT;
 546         }
 547
 548         fbdev->info.var = au1100fb_var;
 549
 550         /* Set h/w registers */
 551         au1100fb_setmode(fbdev);
 552
 553         /* Register new framebuffer */
 554         if (register_framebuffer(&fbdev->info) < 0) {
 555                 print_err("cannot register new framebuffer");
 556                 goto failed;
 557         }
 558
 559         return 0;
 560
 561 failed:
 562         if (fbdev->regs) {
 563                 release_mem_region(fbdev->regs_phys, fbdev->regs_len);
 564         }
 565         if (fbdev->fb_mem) {
 566                 dma_free_noncoherent(dev, fbdev->fb_len, fbdev->fb_mem, fbdev->fb_phys);
 567         }
 568         if (fbdev->info.cmap.len != 0) {
 569                 fb_dealloc_cmap(&fbdev->info.cmap);
 570         }
 571         kfree(fbdev);
 572         dev_set_drvdata(dev, NULL);
 573
 574         return 0;
 575 }
 576
 577 int au1100fb_drv_remove(struct device *dev)
 578 {
 579         struct au1100fb_device *fbdev = NULL;
 580
 581         if (!dev)
 582                 return -ENODEV;
 583
 584         fbdev = (struct au1100fb_device*) dev_get_drvdata(dev);
 585
 586 #if !defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_LOGO)
 587         au1100fb_fb_blank(VESA_POWERDOWN, &fbdev->info);
 588 #endif
 589         fbdev->regs->lcd_control &= ~LCD_CONTROL_GO;
 590
 591         /* Clean up all probe data */
 592         unregister_framebuffer(&fbdev->info);
 593
 594         release_mem_region(fbdev->regs_phys, fbdev->regs_len);
 595
 596         dma_free_coherent(dev, PAGE_ALIGN(fbdev->fb_len), fbdev->fb_mem, fbdev->fb_phys);
 597
 598         fb_dealloc_cmap(&fbdev->info.cmap);
 599         kfree(fbdev->info.pseudo_palette);
 600         kfree((void*)fbdev);
 601
 602         return 0;
 603 }
 604
 605 int au1100fb_drv_suspend(struct device *dev, pm_message_t state)
 606 {
 607         /* TODO */
 608         return 0;
 609 }
 610
 611 int au1100fb_drv_resume(struct device *dev)
 612 {
 613         /* TODO */
 614         return 0;
 615 }
 616
 617 static struct device_driver au1100fb_driver = {
 618         .name           = "au1100-lcd",
 619         .bus            = &platform_bus_type,
 620
 621         .probe          = au1100fb_drv_probe,
 622         .remove         = au1100fb_drv_remove,
 623         .suspend        = au1100fb_drv_suspend,
 624         .resume         = au1100fb_drv_resume,
 625 };
 626
 627 /*-------------------------------------------------------------------------*/
 628
 629 /* Kernel driver */
 630
 631 int au1100fb_setup(char *options)
 632 {
 633         char* this_opt;
 634         int num_panels = ARRAY_SIZE(known_lcd_panels);
 635         char* mode = NULL;
 636         int panel_idx = 0;
 637
 638         if (num_panels <= 0) {
 639                 print_err("No LCD panels supported by driver!");
 640                 return -EFAULT;
 641                         }
 642
 643         if (options) {
 644                 while ((this_opt = strsep(&options,",")) != NULL) {
 645                         /* Panel option */
 646                 if (!strncmp(this_opt, "panel:", 6)) {
 647                                 int i;
 648                                 this_opt += 6;
 649                                 for (i = 0; i < num_panels; i++) {
 650                                         if (!strncmp(this_opt,
 651                                                      known_lcd_panels[i].name,
 652                                                         strlen(this_opt))) {
 653                                                 panel_idx = i;
 654                                         break;
 655                                 }
 656                         }
 657                                 if (i >= num_panels) {
 658                                         print_warn("Panel %s not supported!", this_opt);
 659                                 }
 660                         }
 661                         /* Mode option (only option that start with digit) */
 662                         else if (isdigit(this_opt[0])) {
 663                                 mode = kmalloc(strlen(this_opt) + 1, GFP_KERNEL);
 664                                 strncpy(mode, this_opt, strlen(this_opt) + 1);
 665                         }
 666                         /* Unsupported option */
 667                         else {
 668                                 print_warn("Unsupported option \"%s\"", this_opt);
 669                 }
 670                 }
 671         }
 672
 673         drv_info.panel_idx = panel_idx;
 674         drv_info.opt_mode = mode;
 675
 676         print_info("Panel=%s Mode=%s",
 677                         known_lcd_panels[drv_info.panel_idx].name,
 678                         drv_info.opt_mode ? drv_info.opt_mode : "default");
 679
 680         return 0;
 681 }
 682
 683 int __init au1100fb_init(void)
 684 {
 685         char* options;
 686         int ret;
 687
 688         print_info("" DRIVER_DESC "");
 689
 690         memset(&drv_info, 0, sizeof(drv_info));
 691
 692         if (fb_get_options(DRIVER_NAME, &options))
 693                 return -ENODEV;
 694
 695         /* Setup driver with options */
 696         ret = au1100fb_setup(options);
 697         if (ret < 0) {
 698                 print_err("Fail to setup driver");
 699                 return ret;
 700         }
 701
 702         return driver_register(&au1100fb_driver);
 703 }
 704
 705 void __exit au1100fb_cleanup(void)
 706 {
 707         driver_unregister(&au1100fb_driver);
 708
 709         if (drv_info.opt_mode)
 710                 kfree(drv_info.opt_mode);
 711 }
 712
 713 module_init(au1100fb_init);
 714 module_exit(au1100fb_cleanup);
 715
 716 MODULE_DESCRIPTION(DRIVER_DESC);
 717 MODULE_LICENSE("GPL");