drivers/video/w100fb.c

   1 /*
   2  * linux/drivers/video/w100fb.c
   3  *
   4  * Frame Buffer Device for ATI Imageon w100 (Wallaby)
   5  *
   6  * Copyright (C) 2002, ATI Corp.
   7  * Copyright (C) 2004-2006 Richard Purdie
   8  * Copyright (c) 2005 Ian Molton
   9  * Copyright (c) 2006 Alberto Mardegan
  10  *
  11  * Rewritten for 2.6 by Richard Purdie <rpurdie@rpsys.net>
  12  *
  13  * Generic platform support by Ian Molton <spyro@f2s.com>
  14  * and Richard Purdie <rpurdie@rpsys.net>
  15  *
  16  * w32xx support by Ian Molton
  17  *
  18  * Hardware acceleration support by Alberto Mardegan
  19  * <mardy@users.sourceforge.net>
  20  *
  21  * This program is free software; you can redistribute it and/or modify
  22  * it under the terms of the GNU General Public License version 2 as
  23  * published by the Free Software Foundation.
  24  *
  25  */
  26
  27 #include <linux/delay.h>
  28 #include <linux/fb.h>
  29 #include <linux/init.h>
  30 #include <linux/kernel.h>
  31 #include <linux/mm.h>
  32 #include <linux/platform_device.h>
  33 #include <linux/string.h>
  34 #include <linux/vmalloc.h>
  35 #include <asm/io.h>
  36 #include <asm/uaccess.h>
  37 #include <video/w100fb.h>
  38 #include "w100fb.h"
  39
  40 /*
  41  * Prototypes
  42  */
  43 static void w100_suspend(u32 mode);
  44 static void w100_vsync(void);
  45 static void w100_hw_init(struct w100fb_par*);
  46 static void w100_pwm_setup(struct w100fb_par*);
  47 static void w100_init_clocks(struct w100fb_par*);
  48 static void w100_setup_memory(struct w100fb_par*);
  49 static void w100_init_lcd(struct w100fb_par*);
  50 static void w100_set_dispregs(struct w100fb_par*);
  51 static void w100_update_enable(void);
  52 static void w100_update_disable(void);
  53 static void calc_hsync(struct w100fb_par *par);
  54 static void w100_init_graphic_engine(struct w100fb_par *par);
  55 struct w100_pll_info *w100_get_xtal_table(unsigned int freq);
  56
  57 /* Pseudo palette size */
  58 #define MAX_PALETTES      16
  59
  60 #define W100_SUSPEND_EXTMEM 0
  61 #define W100_SUSPEND_ALL    1
  62
  63 #define BITS_PER_PIXEL    16
  64
  65 /* Remapped addresses for base cfg, memmapped regs and the frame buffer itself */
  66 static void *remapped_base;
  67 static void *remapped_regs;
  68 static void *remapped_fbuf;
  69
  70 #define REMAPPED_FB_LEN   0x15ffff
  71
  72 /* This is the offset in the w100's address space we map the current
  73    framebuffer memory to. We use the position of external memory as
  74    we can remap internal memory to there if external isn't present. */
  75 #define W100_FB_BASE MEM_EXT_BASE_VALUE
  76
  77
  78 /*
  79  * Sysfs functions
  80  */
  81 static ssize_t flip_show(struct device *dev, struct device_attribute *attr, char *buf)
  82 {
  83         struct fb_info *info = dev_get_drvdata(dev);
  84         struct w100fb_par *par=info->par;
  85
  86         return sprintf(buf, "%d\n",par->flip);
  87 }
  88
  89 static ssize_t flip_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
  90 {
  91         unsigned int flip;
  92         struct fb_info *info = dev_get_drvdata(dev);
  93         struct w100fb_par *par=info->par;
  94
  95         flip = simple_strtoul(buf, NULL, 10);
  96
  97         if (flip > 0)
  98                 par->flip = 1;
  99         else
 100                 par->flip = 0;
 101
 102         w100_update_disable();
 103         w100_set_dispregs(par);
 104         w100_update_enable();
 105
 106         calc_hsync(par);
 107
 108         return count;
 109 }
 110
 111 static DEVICE_ATTR(flip, 0644, flip_show, flip_store);
 112
 113 static ssize_t w100fb_reg_read(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
 114 {
 115         unsigned long regs, param;
 116         regs = simple_strtoul(buf, NULL, 16);
 117         param = readl(remapped_regs + regs);
 118         printk("Read Register 0x%08lX: 0x%08lX\n", regs, param);
 119         return count;
 120 }
 121
 122 static DEVICE_ATTR(reg_read, 0200, NULL, w100fb_reg_read);
 123
 124 static ssize_t w100fb_reg_write(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
 125 {
 126         unsigned long regs, param;
 127         sscanf(buf, "%lx %lx", &regs, &param);
 128
 129         if (regs <= 0x2000) {
 130                 printk("Write Register 0x%08lX: 0x%08lX\n", regs, param);
 131                 writel(param, remapped_regs + regs);
 132         }
 133
 134         return count;
 135 }
 136
 137 static DEVICE_ATTR(reg_write, 0200, NULL, w100fb_reg_write);
 138
 139
 140 static ssize_t fastpllclk_show(struct device *dev, struct device_attribute *attr, char *buf)
 141 {
 142         struct fb_info *info = dev_get_drvdata(dev);
 143         struct w100fb_par *par=info->par;
 144
 145         return sprintf(buf, "%d\n",par->fastpll_mode);
 146 }
 147
 148 static ssize_t fastpllclk_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
 149 {
 150         struct fb_info *info = dev_get_drvdata(dev);
 151         struct w100fb_par *par=info->par;
 152
 153         if (simple_strtoul(buf, NULL, 10) > 0) {
 154                 par->fastpll_mode=1;
 155                 printk("w100fb: Using fast system clock (if possible)\n");
 156         } else {
 157                 par->fastpll_mode=0;
 158                 printk("w100fb: Using normal system clock\n");
 159         }
 160
 161         w100_init_clocks(par);
 162         calc_hsync(par);
 163
 164         return count;
 165 }
 166
 167 static DEVICE_ATTR(fastpllclk, 0644, fastpllclk_show, fastpllclk_store);
 168
 169 /*
 170  * Some touchscreens need hsync information from the video driver to
 171  * function correctly. We export it here.
 172  */
 173 unsigned long w100fb_get_hsynclen(struct device *dev)
 174 {
 175         struct fb_info *info = dev_get_drvdata(dev);
 176         struct w100fb_par *par=info->par;
 177
 178         /* If display is blanked/suspended, hsync isn't active */
 179         if (par->blanked)
 180                 return 0;
 181         else
 182                 return par->hsync_len;
 183 }
 184 EXPORT_SYMBOL(w100fb_get_hsynclen);
 185
 186 static void w100fb_clear_screen(struct w100fb_par *par)
 187 {
 188         memset_io(remapped_fbuf + (W100_FB_BASE-MEM_WINDOW_BASE), 0, (par->xres * par->yres * BITS_PER_PIXEL/8));
 189 }
 190
 191
 192 /*
 193  * Set a palette value from rgb components
 194  */
 195 static int w100fb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
 196                              u_int trans, struct fb_info *info)
 197 {
 198         unsigned int val;
 199         int ret = 1;
 200
 201         /*
 202          * If greyscale is true, then we convert the RGB value
 203          * to greyscale no matter what visual we are using.
 204          */
 205         if (info->var.grayscale)
 206                 red = green = blue = (19595 * red + 38470 * green + 7471 * blue) >> 16;
 207
 208         /*
 209          * 16-bit True Colour.  We encode the RGB value
 210          * according to the RGB bitfield information.
 211          */
 212         if (regno < MAX_PALETTES) {
 213                 u32 *pal = info->pseudo_palette;
 214
 215                 val = (red & 0xf800) | ((green & 0xfc00) >> 5) | ((blue & 0xf800) >> 11);
 216                 pal[regno] = val;
 217                 ret = 0;
 218         }
 219         return ret;
 220 }
 221
 222
 223 /*
 224  * Blank the display based on value in blank_mode
 225  */
 226 static int w100fb_blank(int blank_mode, struct fb_info *info)
 227 {
 228         struct w100fb_par *par = info->par;
 229         struct w100_tg_info *tg = par->mach->tg;
 230
 231         switch(blank_mode) {
 232
 233         case FB_BLANK_NORMAL:         /* Normal blanking */
 234         case FB_BLANK_VSYNC_SUSPEND:  /* VESA blank (vsync off) */
 235         case FB_BLANK_HSYNC_SUSPEND:  /* VESA blank (hsync off) */
 236         case FB_BLANK_POWERDOWN:      /* Poweroff */
 237                 if (par->blanked == 0) {
 238                         if(tg && tg->suspend)
 239                                 tg->suspend(par);
 240                         par->blanked = 1;
 241                 }
 242                 break;
 243
 244         case FB_BLANK_UNBLANK: /* Unblanking */
 245                 if (par->blanked != 0) {
 246                         if(tg && tg->resume)
 247                                 tg->resume(par);
 248                         par->blanked = 0;
 249                 }
 250                 break;
 251         }
 252         return 0;
 253 }
 254
 255
 256 static void w100_fifo_wait(int entries)
 257 {
 258         union rbbm_status_u status;
 259         int i;
 260
 261         for (i = 0; i < 2000000; i++) {
 262                 status.val = readl(remapped_regs + mmRBBM_STATUS);
 263                 if (status.f.cmdfifo_avail >= entries)
 264                         return;
 265                 udelay(1);
 266         }
 267         printk(KERN_ERR "w100fb: FIFO Timeout!\n");
 268 }
 269
 270
 271 static int w100fb_sync(struct fb_info *info)
 272 {
 273         union rbbm_status_u status;
 274         int i;
 275
 276         for (i = 0; i < 2000000; i++) {
 277                 status.val = readl(remapped_regs + mmRBBM_STATUS);
 278                 if (!status.f.gui_active)
 279                         return 0;
 280                 udelay(1);
 281         }
 282         printk(KERN_ERR "w100fb: Graphic engine timeout!\n");
 283         return -EBUSY;
 284 }
 285
 286
 287 static void w100_init_graphic_engine(struct w100fb_par *par)
 288 {
 289         union dp_gui_master_cntl_u gmc;
 290         union dp_mix_u dp_mix;
 291         union dp_datatype_u dp_datatype;
 292         union dp_cntl_u dp_cntl;
 293
 294         w100_fifo_wait(4);
 295         writel(W100_FB_BASE, remapped_regs + mmDST_OFFSET);
 296         writel(par->xres, remapped_regs + mmDST_PITCH);
 297         writel(W100_FB_BASE, remapped_regs + mmSRC_OFFSET);
 298         writel(par->xres, remapped_regs + mmSRC_PITCH);
 299
 300         w100_fifo_wait(3);
 301         writel(0, remapped_regs + mmSC_TOP_LEFT);
 302         writel((par->yres << 16) | par->xres, remapped_regs + mmSC_BOTTOM_RIGHT);
 303         writel(0x1fff1fff, remapped_regs + mmSRC_SC_BOTTOM_RIGHT);
 304
 305         w100_fifo_wait(4);
 306         dp_cntl.val = 0;
 307         dp_cntl.f.dst_x_dir = 1;
 308         dp_cntl.f.dst_y_dir = 1;
 309         dp_cntl.f.src_x_dir = 1;
 310         dp_cntl.f.src_y_dir = 1;
 311         dp_cntl.f.dst_major_x = 1;
 312         dp_cntl.f.src_major_x = 1;
 313         writel(dp_cntl.val, remapped_regs + mmDP_CNTL);
 314
 315         gmc.val = 0;
 316         gmc.f.gmc_src_pitch_offset_cntl = 1;
 317         gmc.f.gmc_dst_pitch_offset_cntl = 1;
 318         gmc.f.gmc_src_clipping = 1;
 319         gmc.f.gmc_dst_clipping = 1;
 320         gmc.f.gmc_brush_datatype = GMC_BRUSH_NONE;
 321         gmc.f.gmc_dst_datatype = 3; /* from DstType_16Bpp_444 */
 322         gmc.f.gmc_src_datatype = SRC_DATATYPE_EQU_DST;
 323         gmc.f.gmc_byte_pix_order = 1;
 324         gmc.f.gmc_default_sel = 0;
 325         gmc.f.gmc_rop3 = ROP3_SRCCOPY;
 326         gmc.f.gmc_dp_src_source = DP_SRC_MEM_RECTANGULAR;
 327         gmc.f.gmc_clr_cmp_fcn_dis = 1;
 328         gmc.f.gmc_wr_msk_dis = 1;
 329         gmc.f.gmc_dp_op = DP_OP_ROP;
 330         writel(gmc.val, remapped_regs + mmDP_GUI_MASTER_CNTL);
 331
 332         dp_datatype.val = dp_mix.val = 0;
 333         dp_datatype.f.dp_dst_datatype = gmc.f.gmc_dst_datatype;
 334         dp_datatype.f.dp_brush_datatype = gmc.f.gmc_brush_datatype;
 335         dp_datatype.f.dp_src2_type = 0;
 336         dp_datatype.f.dp_src2_datatype = gmc.f.gmc_src_datatype;
 337         dp_datatype.f.dp_src_datatype = gmc.f.gmc_src_datatype;
 338         dp_datatype.f.dp_byte_pix_order = gmc.f.gmc_byte_pix_order;
 339         writel(dp_datatype.val, remapped_regs + mmDP_DATATYPE);
 340
 341         dp_mix.f.dp_src_source = gmc.f.gmc_dp_src_source;
 342         dp_mix.f.dp_src2_source = 1;
 343         dp_mix.f.dp_rop3 = gmc.f.gmc_rop3;
 344         dp_mix.f.dp_op = gmc.f.gmc_dp_op;
 345         writel(dp_mix.val, remapped_regs + mmDP_MIX);
 346 }
 347
 348
 349 static void w100fb_fillrect(struct fb_info *info,
 350                             const struct fb_fillrect *rect)
 351 {
 352         union dp_gui_master_cntl_u gmc;
 353
 354         if (info->state != FBINFO_STATE_RUNNING)
 355                 return;
 356         if (info->flags & FBINFO_HWACCEL_DISABLED) {
 357                 cfb_fillrect(info, rect);
 358                 return;
 359         }
 360
 361         gmc.val = readl(remapped_regs + mmDP_GUI_MASTER_CNTL);
 362         gmc.f.gmc_rop3 = ROP3_PATCOPY;
 363         gmc.f.gmc_brush_datatype = GMC_BRUSH_SOLID_COLOR;
 364         w100_fifo_wait(2);
 365         writel(gmc.val, remapped_regs + mmDP_GUI_MASTER_CNTL);
 366         writel(rect->color, remapped_regs + mmDP_BRUSH_FRGD_CLR);
 367
 368         w100_fifo_wait(2);
 369         writel((rect->dy << 16) | (rect->dx & 0xffff), remapped_regs + mmDST_Y_X);
 370         writel((rect->width << 16) | (rect->height & 0xffff),
 371                remapped_regs + mmDST_WIDTH_HEIGHT);
 372 }
 373
 374
 375 static void w100fb_copyarea(struct fb_info *info,
 376                             const struct fb_copyarea *area)
 377 {
 378         u32 dx = area->dx, dy = area->dy, sx = area->sx, sy = area->sy;
 379         u32 h = area->height, w = area->width;
 380         union dp_gui_master_cntl_u gmc;
 381
 382         if (info->state != FBINFO_STATE_RUNNING)
 383                 return;
 384         if (info->flags & FBINFO_HWACCEL_DISABLED) {
 385                 cfb_copyarea(info, area);
 386                 return;
 387         }
 388
 389         gmc.val = readl(remapped_regs + mmDP_GUI_MASTER_CNTL);
 390         gmc.f.gmc_rop3 = ROP3_SRCCOPY;
 391         gmc.f.gmc_brush_datatype = GMC_BRUSH_NONE;
 392         w100_fifo_wait(1);
 393         writel(gmc.val, remapped_regs + mmDP_GUI_MASTER_CNTL);
 394
 395         w100_fifo_wait(3);
 396         writel((sy << 16) | (sx & 0xffff), remapped_regs + mmSRC_Y_X);
 397         writel((dy << 16) | (dx & 0xffff), remapped_regs + mmDST_Y_X);
 398         writel((w << 16) | (h & 0xffff), remapped_regs + mmDST_WIDTH_HEIGHT);
 399 }
 400
 401
 402 /*
 403  *  Change the resolution by calling the appropriate hardware functions
 404  */
 405 static void w100fb_activate_var(struct w100fb_par *par)
 406 {
 407         struct w100_tg_info *tg = par->mach->tg;
 408
 409         w100_pwm_setup(par);
 410         w100_setup_memory(par);
 411         w100_init_clocks(par);
 412         w100fb_clear_screen(par);
 413         w100_vsync();
 414
 415         w100_update_disable();
 416         w100_init_lcd(par);
 417         w100_set_dispregs(par);
 418         w100_update_enable();
 419         w100_init_graphic_engine(par);
 420
 421         calc_hsync(par);
 422
 423         if (!par->blanked && tg && tg->change)
 424                 tg->change(par);
 425 }
 426
 427
 428 /* Select the smallest mode that allows the desired resolution to be
 429  * displayed. If desired, the x and y parameters can be rounded up to
 430  * match the selected mode.
 431  */
 432 static struct w100_mode *w100fb_get_mode(struct w100fb_par *par, unsigned int *x, unsigned int *y, int saveval)
 433 {
 434         struct w100_mode *mode = NULL;
 435         struct w100_mode *modelist = par->mach->modelist;
 436         unsigned int best_x = 0xffffffff, best_y = 0xffffffff;
 437         unsigned int i;
 438
 439         for (i = 0 ; i < par->mach->num_modes ; i++) {
 440                 if (modelist[i].xres >= *x && modelist[i].yres >= *y &&
 441                                 modelist[i].xres < best_x && modelist[i].yres < best_y) {
 442                         best_x = modelist[i].xres;
 443                         best_y = modelist[i].yres;
 444                         mode = &modelist[i];
 445                 } else if(modelist[i].xres >= *y && modelist[i].yres >= *x &&
 446                         modelist[i].xres < best_y && modelist[i].yres < best_x) {
 447                         best_x = modelist[i].yres;
 448                         best_y = modelist[i].xres;
 449                         mode = &modelist[i];
 450                 }
 451         }
 452
 453         if (mode && saveval) {
 454                 *x = best_x;
 455                 *y = best_y;
 456         }
 457
 458         return mode;
 459 }
 460
 461
 462 /*
 463  *  w100fb_check_var():
 464  *  Get the video params out of 'var'. If a value doesn't fit, round it up,
 465  *  if it's too big, return -EINVAL.
 466  */
 467 static int w100fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
 468 {
 469         struct w100fb_par *par=info->par;
 470
 471         if(!w100fb_get_mode(par, &var->xres, &var->yres, 1))
 472                 return -EINVAL;
 473
 474         if (par->mach->mem && ((var->xres*var->yres*BITS_PER_PIXEL/8) > (par->mach->mem->size+1)))
 475                 return -EINVAL;
 476
 477         if (!par->mach->mem && ((var->xres*var->yres*BITS_PER_PIXEL/8) > (MEM_INT_SIZE+1)))
 478                 return -EINVAL;
 479
 480         var->xres_virtual = max(var->xres_virtual, var->xres);
 481         var->yres_virtual = max(var->yres_virtual, var->yres);
 482
 483         if (var->bits_per_pixel > BITS_PER_PIXEL)
 484                 return -EINVAL;
 485         else
 486                 var->bits_per_pixel = BITS_PER_PIXEL;
 487
 488         var->red.offset = 11;
 489         var->red.length = 5;
 490         var->green.offset = 5;
 491         var->green.length = 6;
 492         var->blue.offset = 0;
 493         var->blue.length = 5;
 494         var->transp.offset = var->transp.length = 0;
 495
 496         var->nonstd = 0;
 497         var->height = -1;
 498         var->width = -1;
 499         var->vmode = FB_VMODE_NONINTERLACED;
 500         var->sync = 0;
 501         var->pixclock = 0x04;  /* 171521; */
 502
 503         return 0;
 504 }
 505
 506
 507 /*
 508  * w100fb_set_par():
 509  *      Set the user defined part of the display for the specified console
 510  *  by looking at the values in info.var
 511  */
 512 static int w100fb_set_par(struct fb_info *info)
 513 {
 514         struct w100fb_par *par=info->par;
 515
 516         if (par->xres != info->var.xres || par->yres != info->var.yres) {
 517                 par->xres = info->var.xres;
 518                 par->yres = info->var.yres;
 519                 par->mode = w100fb_get_mode(par, &par->xres, &par->yres, 0);
 520
 521                 info->fix.visual = FB_VISUAL_TRUECOLOR;
 522                 info->fix.ypanstep = 0;
 523                 info->fix.ywrapstep = 0;
 524                 info->fix.line_length = par->xres * BITS_PER_PIXEL / 8;
 525
 526                 if ((par->xres*par->yres*BITS_PER_PIXEL/8) > (MEM_INT_SIZE+1)) {
 527                         par->extmem_active = 1;
 528                         info->fix.smem_len = par->mach->mem->size+1;
 529                 } else {
 530                         par->extmem_active = 0;
 531                         info->fix.smem_len = MEM_INT_SIZE+1;
 532                 }
 533
 534                 w100fb_activate_var(par);
 535         }
 536         return 0;
 537 }
 538
 539
 540 /*
 541  *  Frame buffer operations
 542  */
 543 static struct fb_ops w100fb_ops = {
 544         .owner        = THIS_MODULE,
 545         .fb_check_var = w100fb_check_var,
 546         .fb_set_par   = w100fb_set_par,
 547         .fb_setcolreg = w100fb_setcolreg,
 548         .fb_blank     = w100fb_blank,
 549         .fb_fillrect  = w100fb_fillrect,
 550         .fb_copyarea  = w100fb_copyarea,
 551         .fb_imageblit = cfb_imageblit,
 552         .fb_sync      = w100fb_sync,
 553 };
 554
 555 #ifdef CONFIG_PM
 556 static void w100fb_save_vidmem(struct w100fb_par *par)
 557 {
 558         int memsize;
 559
 560         if (par->extmem_active) {
 561                 memsize=par->mach->mem->size;
 562                 par->saved_extmem = vmalloc(memsize);
 563                 if (par->saved_extmem)
 564                         memcpy_fromio(par->saved_extmem, remapped_fbuf + (W100_FB_BASE-MEM_WINDOW_BASE), memsize);
 565         }
 566         memsize=MEM_INT_SIZE;
 567         par->saved_intmem = vmalloc(memsize);
 568         if (par->saved_intmem && par->extmem_active)
 569                 memcpy_fromio(par->saved_intmem, remapped_fbuf + (W100_FB_BASE-MEM_INT_BASE_VALUE), memsize);
 570         else if (par->saved_intmem)
 571                 memcpy_fromio(par->saved_intmem, remapped_fbuf + (W100_FB_BASE-MEM_WINDOW_BASE), memsize);
 572 }
 573
 574 static void w100fb_restore_vidmem(struct w100fb_par *par)
 575 {
 576         int memsize;
 577
 578         if (par->extmem_active && par->saved_extmem) {
 579                 memsize=par->mach->mem->size;
 580                 memcpy_toio(remapped_fbuf + (W100_FB_BASE-MEM_WINDOW_BASE), par->saved_extmem, memsize);
 581                 vfree(par->saved_extmem);
 582         }
 583         if (par->saved_intmem) {
 584                 memsize=MEM_INT_SIZE;
 585                 if (par->extmem_active)
 586                         memcpy_toio(remapped_fbuf + (W100_FB_BASE-MEM_INT_BASE_VALUE), par->saved_intmem, memsize);
 587                 else
 588                         memcpy_toio(remapped_fbuf + (W100_FB_BASE-MEM_WINDOW_BASE), par->saved_intmem, memsize);
 589                 vfree(par->saved_intmem);
 590         }
 591 }
 592
 593 static int w100fb_suspend(struct platform_device *dev, pm_message_t state)
 594 {
 595         struct fb_info *info = platform_get_drvdata(dev);
 596         struct w100fb_par *par=info->par;
 597         struct w100_tg_info *tg = par->mach->tg;
 598
 599         w100fb_save_vidmem(par);
 600         if(tg && tg->suspend)
 601                 tg->suspend(par);
 602         w100_suspend(W100_SUSPEND_ALL);
 603         par->blanked = 1;
 604
 605         return 0;
 606 }
 607
 608 static int w100fb_resume(struct platform_device *dev)
 609 {
 610         struct fb_info *info = platform_get_drvdata(dev);
 611         struct w100fb_par *par=info->par;
 612         struct w100_tg_info *tg = par->mach->tg;
 613
 614         w100_hw_init(par);
 615         w100fb_activate_var(par);
 616         w100fb_restore_vidmem(par);
 617         if(tg && tg->resume)
 618                 tg->resume(par);
 619         par->blanked = 0;
 620
 621         return 0;
 622 }
 623 #else
 624 #define w100fb_suspend  NULL
 625 #define w100fb_resume   NULL
 626 #endif
 627
 628
 629 int __init w100fb_probe(struct platform_device *pdev)
 630 {
 631         int err = -EIO;
 632         struct w100fb_mach_info *inf;
 633         struct fb_info *info = NULL;
 634         struct w100fb_par *par;
 635         struct resource *mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 636         unsigned int chip_id;
 637
 638         if (!mem)
 639                 return -EINVAL;
 640
 641         /* Remap the chip base address */
 642         remapped_base = ioremap_nocache(mem->start+W100_CFG_BASE, W100_CFG_LEN);
 643         if (remapped_base == NULL)
 644                 goto out;
 645
 646         /* Map the register space */
 647         remapped_regs = ioremap_nocache(mem->start+W100_REG_BASE, W100_REG_LEN);
 648         if (remapped_regs == NULL)
 649                 goto out;
 650
 651         /* Identify the chip */
 652         printk("Found ");
 653         chip_id = readl(remapped_regs + mmCHIP_ID);
 654         switch(chip_id) {
 655                 case CHIP_ID_W100:  printk("w100");  break;
 656                 case CHIP_ID_W3200: printk("w3200"); break;
 657                 case CHIP_ID_W3220: printk("w3220"); break;
 658                 default:
 659                         printk("Unknown imageon chip ID\n");
 660                         err = -ENODEV;
 661                         goto out;
 662         }
 663         printk(" at 0x%08lx.\n", (unsigned long) mem->start+W100_CFG_BASE);
 664
 665         /* Remap the framebuffer */
 666         remapped_fbuf = ioremap_nocache(mem->start+MEM_WINDOW_BASE, MEM_WINDOW_SIZE);
 667         if (remapped_fbuf == NULL)
 668                 goto out;
 669
 670         info=framebuffer_alloc(sizeof(struct w100fb_par), &pdev->dev);
 671         if (!info) {
 672                 err = -ENOMEM;
 673                 goto out;
 674         }
 675
 676         par = info->par;
 677         platform_set_drvdata(pdev, info);
 678
 679         inf = pdev->dev.platform_data;
 680         par->chip_id = chip_id;
 681         par->mach = inf;
 682         par->fastpll_mode = 0;
 683         par->blanked = 0;
 684
 685         par->pll_table=w100_get_xtal_table(inf->xtal_freq);
 686         if (!par->pll_table) {
 687                 printk(KERN_ERR "No matching Xtal definition found\n");
 688                 err = -EINVAL;
 689                 goto out;
 690         }
 691
 692         info->pseudo_palette = kmalloc(sizeof (u32) * MAX_PALETTES, GFP_KERNEL);
 693         if (!info->pseudo_palette) {
 694                 err = -ENOMEM;
 695                 goto out;
 696         }
 697
 698         info->fbops = &w100fb_ops;
 699         info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_COPYAREA |
 700                 FBINFO_HWACCEL_FILLRECT;
 701         info->node = -1;
 702         info->screen_base = remapped_fbuf + (W100_FB_BASE-MEM_WINDOW_BASE);
 703         info->screen_size = REMAPPED_FB_LEN;
 704
 705         strcpy(info->fix.id, "w100fb");
 706         info->fix.type = FB_TYPE_PACKED_PIXELS;
 707         info->fix.type_aux = 0;
 708         info->fix.accel = FB_ACCEL_NONE;
 709         info->fix.smem_start = mem->start+W100_FB_BASE;
 710         info->fix.mmio_start = mem->start+W100_REG_BASE;
 711         info->fix.mmio_len = W100_REG_LEN;
 712
 713         if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) {
 714                 err = -ENOMEM;
 715                 goto out;
 716         }
 717
 718         par->mode = &inf->modelist[0];
 719         if(inf->init_mode & INIT_MODE_ROTATED) {
 720                 info->var.xres = par->mode->yres;
 721                 info->var.yres = par->mode->xres;
 722         }
 723         else {
 724                 info->var.xres = par->mode->xres;
 725                 info->var.yres = par->mode->yres;
 726         }
 727
 728         if(inf->init_mode &= INIT_MODE_FLIPPED)
 729                 par->flip = 1;
 730         else
 731                 par->flip = 0;
 732
 733         info->var.xres_virtual = info->var.xres;
 734         info->var.yres_virtual = info->var.yres;
 735         info->var.pixclock = 0x04;  /* 171521; */
 736         info->var.sync = 0;
 737         info->var.grayscale = 0;
 738         info->var.xoffset = info->var.yoffset = 0;
 739         info->var.accel_flags = 0;
 740         info->var.activate = FB_ACTIVATE_NOW;
 741
 742         w100_hw_init(par);
 743
 744         if (w100fb_check_var(&info->var, info) < 0) {
 745                 err = -EINVAL;
 746                 goto out;
 747         }
 748
 749         w100fb_set_par(info);
 750
 751         if (register_framebuffer(info) < 0) {
 752                 err = -EINVAL;
 753                 goto out;
 754         }
 755
 756         err = device_create_file(&pdev->dev, &dev_attr_fastpllclk);
 757         err |= device_create_file(&pdev->dev, &dev_attr_reg_read);
 758         err |= device_create_file(&pdev->dev, &dev_attr_reg_write);
 759         err |= device_create_file(&pdev->dev, &dev_attr_flip);
 760
 761         if (err != 0)
 762                 printk(KERN_WARNING "fb%d: failed to register attributes (%d)\n",
 763                                 info->node, err);
 764
 765         printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node, info->fix.id);
 766         return 0;
 767 out:
 768         fb_dealloc_cmap(&info->cmap);
 769         kfree(info->pseudo_palette);
 770         if (remapped_fbuf != NULL)
 771                 iounmap(remapped_fbuf);
 772         if (remapped_regs != NULL)
 773                 iounmap(remapped_regs);
 774         if (remapped_base != NULL)
 775                 iounmap(remapped_base);
 776         if (info)
 777                 framebuffer_release(info);
 778         return err;
 779 }
 780
 781
 782 static int w100fb_remove(struct platform_device *pdev)
 783 {
 784         struct fb_info *info = platform_get_drvdata(pdev);
 785         struct w100fb_par *par=info->par;
 786
 787         device_remove_file(&pdev->dev, &dev_attr_fastpllclk);
 788         device_remove_file(&pdev->dev, &dev_attr_reg_read);
 789         device_remove_file(&pdev->dev, &dev_attr_reg_write);
 790         device_remove_file(&pdev->dev, &dev_attr_flip);
 791
 792         unregister_framebuffer(info);
 793
 794         vfree(par->saved_intmem);
 795         vfree(par->saved_extmem);
 796         kfree(info->pseudo_palette);
 797         fb_dealloc_cmap(&info->cmap);
 798
 799         iounmap(remapped_base);
 800         iounmap(remapped_regs);
 801         iounmap(remapped_fbuf);
 802
 803         framebuffer_release(info);
 804
 805         return 0;
 806 }
 807
 808
 809 /* ------------------- chipset specific functions -------------------------- */
 810
 811
 812 static void w100_soft_reset(void)
 813 {
 814         u16 val = readw((u16 *) remapped_base + cfgSTATUS);
 815         writew(val | 0x08, (u16 *) remapped_base + cfgSTATUS);
 816         udelay(100);
 817         writew(0x00, (u16 *) remapped_base + cfgSTATUS);
 818         udelay(100);
 819 }
 820
 821 static void w100_update_disable(void)
 822 {
 823         union disp_db_buf_cntl_wr_u disp_db_buf_wr_cntl;
 824
 825         /* Prevent display updates */
 826         disp_db_buf_wr_cntl.f.db_buf_cntl = 0x1e;
 827         disp_db_buf_wr_cntl.f.update_db_buf = 0;
 828         disp_db_buf_wr_cntl.f.en_db_buf = 0;
 829         writel((u32) (disp_db_buf_wr_cntl.val), remapped_regs + mmDISP_DB_BUF_CNTL);
 830 }
 831
 832 static void w100_update_enable(void)
 833 {
 834         union disp_db_buf_cntl_wr_u disp_db_buf_wr_cntl;
 835
 836         /* Enable display updates */
 837         disp_db_buf_wr_cntl.f.db_buf_cntl = 0x1e;
 838         disp_db_buf_wr_cntl.f.update_db_buf = 1;
 839         disp_db_buf_wr_cntl.f.en_db_buf = 1;
 840         writel((u32) (disp_db_buf_wr_cntl.val), remapped_regs + mmDISP_DB_BUF_CNTL);
 841 }
 842
 843 unsigned long w100fb_gpio_read(int port)
 844 {
 845         unsigned long value;
 846
 847         if (port==W100_GPIO_PORT_A)
 848                 value = readl(remapped_regs + mmGPIO_DATA);
 849         else
 850                 value = readl(remapped_regs + mmGPIO_DATA2);
 851
 852         return value;
 853 }
 854
 855 void w100fb_gpio_write(int port, unsigned long value)
 856 {
 857         if (port==W100_GPIO_PORT_A)
 858                 value = writel(value, remapped_regs + mmGPIO_DATA);
 859         else
 860                 value = writel(value, remapped_regs + mmGPIO_DATA2);
 861 }
 862 EXPORT_SYMBOL(w100fb_gpio_read);
 863 EXPORT_SYMBOL(w100fb_gpio_write);
 864
 865 /*
 866  * Initialization of critical w100 hardware
 867  */
 868 static void w100_hw_init(struct w100fb_par *par)
 869 {
 870         u32 temp32;
 871         union cif_cntl_u cif_cntl;
 872         union intf_cntl_u intf_cntl;
 873         union cfgreg_base_u cfgreg_base;
 874         union wrap_top_dir_u wrap_top_dir;
 875         union cif_read_dbg_u cif_read_dbg;
 876         union cpu_defaults_u cpu_default;
 877         union cif_write_dbg_u cif_write_dbg;
 878         union wrap_start_dir_u wrap_start_dir;
 879         union cif_io_u cif_io;
 880         struct w100_gpio_regs *gpio = par->mach->gpio;
 881
 882         w100_soft_reset();
 883
 884         /* This is what the fpga_init code does on reset. May be wrong
 885            but there is little info available */
 886         writel(0x31, remapped_regs + mmSCRATCH_UMSK);
 887         for (temp32 = 0; temp32 < 10000; temp32++)
 888                 readl(remapped_regs + mmSCRATCH_UMSK);
 889         writel(0x30, remapped_regs + mmSCRATCH_UMSK);
 890
 891         /* Set up CIF */
 892         cif_io.val = defCIF_IO;
 893         writel((u32)(cif_io.val), remapped_regs + mmCIF_IO);
 894
 895         cif_write_dbg.val = readl(remapped_regs + mmCIF_WRITE_DBG);
 896         cif_write_dbg.f.dis_packer_ful_during_rbbm_timeout = 0;
 897         cif_write_dbg.f.en_dword_split_to_rbbm = 1;
 898         cif_write_dbg.f.dis_timeout_during_rbbm = 1;
 899         writel((u32) (cif_write_dbg.val), remapped_regs + mmCIF_WRITE_DBG);
 900
 901         cif_read_dbg.val = readl(remapped_regs + mmCIF_READ_DBG);
 902         cif_read_dbg.f.dis_rd_same_byte_to_trig_fetch = 1;
 903         writel((u32) (cif_read_dbg.val), remapped_regs + mmCIF_READ_DBG);
 904
 905         cif_cntl.val = readl(remapped_regs + mmCIF_CNTL);
 906         cif_cntl.f.dis_system_bits = 1;
 907         cif_cntl.f.dis_mr = 1;
 908         cif_cntl.f.en_wait_to_compensate_dq_prop_dly = 0;
 909         cif_cntl.f.intb_oe = 1;
 910         cif_cntl.f.interrupt_active_high = 1;
 911         writel((u32) (cif_cntl.val), remapped_regs + mmCIF_CNTL);
 912
 913         /* Setup cfgINTF_CNTL and cfgCPU defaults */
 914         intf_cntl.val = defINTF_CNTL;
 915         intf_cntl.f.ad_inc_a = 1;
 916         intf_cntl.f.ad_inc_b = 1;
 917         intf_cntl.f.rd_data_rdy_a = 0;
 918         intf_cntl.f.rd_data_rdy_b = 0;
 919         writeb((u8) (intf_cntl.val), remapped_base + cfgINTF_CNTL);
 920
 921         cpu_default.val = defCPU_DEFAULTS;
 922         cpu_default.f.access_ind_addr_a = 1;
 923         cpu_default.f.access_ind_addr_b = 1;
 924         cpu_default.f.access_scratch_reg = 1;
 925         cpu_default.f.transition_size = 0;
 926         writeb((u8) (cpu_default.val), remapped_base + cfgCPU_DEFAULTS);
 927
 928         /* set up the apertures */
 929         writeb((u8) (W100_REG_BASE >> 16), remapped_base + cfgREG_BASE);
 930
 931         cfgreg_base.val = defCFGREG_BASE;
 932         cfgreg_base.f.cfgreg_base = W100_CFG_BASE;
 933         writel((u32) (cfgreg_base.val), remapped_regs + mmCFGREG_BASE);
 934
 935         wrap_start_dir.val = defWRAP_START_DIR;
 936         wrap_start_dir.f.start_addr = WRAP_BUF_BASE_VALUE >> 1;
 937         writel((u32) (wrap_start_dir.val), remapped_regs + mmWRAP_START_DIR);
 938
 939         wrap_top_dir.val = defWRAP_TOP_DIR;
 940         wrap_top_dir.f.top_addr = WRAP_BUF_TOP_VALUE >> 1;
 941         writel((u32) (wrap_top_dir.val), remapped_regs + mmWRAP_TOP_DIR);
 942
 943         writel((u32) 0x2440, remapped_regs + mmRBBM_CNTL);
 944
 945         /* Set the hardware to 565 colour */
 946         temp32 = readl(remapped_regs + mmDISP_DEBUG2);
 947         temp32 &= 0xff7fffff;
 948         temp32 |= 0x00800000;
 949         writel(temp32, remapped_regs + mmDISP_DEBUG2);
 950
 951         /* Initialise the GPIO lines */
 952         if (gpio) {
 953                 writel(gpio->init_data1, remapped_regs + mmGPIO_DATA);
 954                 writel(gpio->init_data2, remapped_regs + mmGPIO_DATA2);
 955                 writel(gpio->gpio_dir1,  remapped_regs + mmGPIO_CNTL1);
 956                 writel(gpio->gpio_oe1,   remapped_regs + mmGPIO_CNTL2);
 957                 writel(gpio->gpio_dir2,  remapped_regs + mmGPIO_CNTL3);
 958                 writel(gpio->gpio_oe2,   remapped_regs + mmGPIO_CNTL4);
 959         }
 960 }
 961
 962
 963 struct power_state {
 964         union clk_pin_cntl_u clk_pin_cntl;
 965         union pll_ref_fb_div_u pll_ref_fb_div;
 966         union pll_cntl_u pll_cntl;
 967         union sclk_cntl_u sclk_cntl;
 968         union pclk_cntl_u pclk_cntl;
 969         union pwrmgt_cntl_u pwrmgt_cntl;
 970         int auto_mode;  /* system clock auto changing? */
 971 };
 972
 973
 974 static struct power_state w100_pwr_state;
 975
 976 /* The PLL Fout is determined by (XtalFreq/(M+1)) * ((N_int+1) + (N_fac/8)) */
 977
 978 /* 12.5MHz Crystal PLL Table */
 979 static struct w100_pll_info xtal_12500000[] = {
 980         /*freq     M   N_int    N_fac  tfgoal  lock_time */
 981         { 50,      0,   1,       0,     0xe0,        56},  /*  50.00 MHz */
 982         { 75,      0,   5,       0,     0xde,        37},  /*  75.00 MHz */
 983         {100,      0,   7,       0,     0xe0,        28},  /* 100.00 MHz */
 984         {125,      0,   9,       0,     0xe0,        22},  /* 125.00 MHz */
 985         {150,      0,   11,      0,     0xe0,        17},  /* 150.00 MHz */
 986         {  0,      0,   0,       0,        0,         0},  /* Terminator */
 987 };
 988
 989 /* 14.318MHz Crystal PLL Table */
 990 static struct w100_pll_info xtal_14318000[] = {
 991         /*freq     M   N_int    N_fac  tfgoal  lock_time */
 992         { 40,      4,   13,      0,     0xe0,        80}, /* tfgoal guessed */
 993         { 50,      1,   6,       0,     0xe0,        64}, /*  50.05 MHz */
 994         { 57,      2,   11,      0,     0xe0,        53}, /* tfgoal guessed */
 995         { 75,      0,   4,       3,     0xe0,        43}, /*  75.08 MHz */
 996         {100,      0,   6,       0,     0xe0,        32}, /* 100.10 MHz */
 997         {  0,      0,   0,       0,        0,         0},
 998 };
 999
1000 /* 16MHz Crystal PLL Table */
1001 static struct w100_pll_info xtal_16000000[] = {
1002         /*freq     M   N_int    N_fac  tfgoal  lock_time */
1003         { 72,      1,   8,       0,     0xe0,        48}, /* tfgoal guessed */
1004         { 95,      1,   10,      7,     0xe0,        38}, /* tfgoal guessed */
1005         { 96,      1,   11,      0,     0xe0,        36}, /* tfgoal guessed */
1006         {  0,      0,   0,       0,        0,         0},
1007 };
1008
1009 static struct pll_entries {
1010         int xtal_freq;
1011         struct w100_pll_info *pll_table;
1012 } w100_pll_tables[] = {
1013         { 12500000, &xtal_12500000[0] },
1014         { 14318000, &xtal_14318000[0] },
1015         { 16000000, &xtal_16000000[0] },
1016         { 0 },
1017 };
1018
1019 struct w100_pll_info *w100_get_xtal_table(unsigned int freq)
1020 {
1021         struct pll_entries *pll_entry = w100_pll_tables;
1022
1023         do {
1024                 if (freq == pll_entry->xtal_freq)
1025                         return pll_entry->pll_table;
1026                 pll_entry++;
1027         } while (pll_entry->xtal_freq);
1028         return 0;
1029 }
1030
1031
1032 static unsigned int w100_get_testcount(unsigned int testclk_sel)
1033 {
1034         union clk_test_cntl_u clk_test_cntl;
1035
1036         udelay(5);
1037
1038         /* Select the test clock source and reset */
1039         clk_test_cntl.f.start_check_freq = 0x0;
1040         clk_test_cntl.f.testclk_sel = testclk_sel;
1041         clk_test_cntl.f.tstcount_rst = 0x1; /* set reset */
1042         writel((u32) (clk_test_cntl.val), remapped_regs + mmCLK_TEST_CNTL);
1043
1044         clk_test_cntl.f.tstcount_rst = 0x0; /* clear reset */
1045         writel((u32) (clk_test_cntl.val), remapped_regs + mmCLK_TEST_CNTL);
1046
1047         /* Run clock test */
1048         clk_test_cntl.f.start_check_freq = 0x1;
1049         writel((u32) (clk_test_cntl.val), remapped_regs + mmCLK_TEST_CNTL);
1050
1051         /* Give the test time to complete */
1052         udelay(20);
1053
1054         /* Return the result */
1055         clk_test_cntl.val = readl(remapped_regs + mmCLK_TEST_CNTL);
1056         clk_test_cntl.f.start_check_freq = 0x0;
1057         writel((u32) (clk_test_cntl.val), remapped_regs + mmCLK_TEST_CNTL);
1058
1059         return clk_test_cntl.f.test_count;
1060 }
1061
1062
1063 static int w100_pll_adjust(struct w100_pll_info *pll)
1064 {
1065         unsigned int tf80;
1066         unsigned int tf20;
1067
1068         /* Initial Settings */
1069         w100_pwr_state.pll_cntl.f.pll_pwdn = 0x0;     /* power down */
1070         w100_pwr_state.pll_cntl.f.pll_reset = 0x0;    /* not reset */
1071         w100_pwr_state.pll_cntl.f.pll_tcpoff = 0x1;   /* Hi-Z */
1072         w100_pwr_state.pll_cntl.f.pll_pvg = 0x0;      /* VCO gain = 0 */
1073         w100_pwr_state.pll_cntl.f.pll_vcofr = 0x0;    /* VCO frequency range control = off */
1074         w100_pwr_state.pll_cntl.f.pll_ioffset = 0x0;  /* current offset inside VCO = 0 */
1075         w100_pwr_state.pll_cntl.f.pll_ring_off = 0x0;
1076
1077         /* Wai Ming 80 percent of VDD 1.3V gives 1.04V, minimum operating voltage is 1.08V
1078          * therefore, commented out the following lines
1079          * tf80 meant tf100
1080          */
1081         do {
1082                 /* set VCO input = 0.8 * VDD */
1083                 w100_pwr_state.pll_cntl.f.pll_dactal = 0xd;
1084                 writel((u32) (w100_pwr_state.pll_cntl.val), remapped_regs + mmPLL_CNTL);
1085
1086                 tf80 = w100_get_testcount(TESTCLK_SRC_PLL);
1087                 if (tf80 >= (pll->tfgoal)) {
1088                         /* set VCO input = 0.2 * VDD */
1089                         w100_pwr_state.pll_cntl.f.pll_dactal = 0x7;
1090                         writel((u32) (w100_pwr_state.pll_cntl.val), remapped_regs + mmPLL_CNTL);
1091
1092                         tf20 = w100_get_testcount(TESTCLK_SRC_PLL);
1093                         if (tf20 <= (pll->tfgoal))
1094                                 return 1;  /* Success */
1095
1096                         if ((w100_pwr_state.pll_cntl.f.pll_vcofr == 0x0) &&
1097                                 ((w100_pwr_state.pll_cntl.f.pll_pvg == 0x7) ||
1098                                 (w100_pwr_state.pll_cntl.f.pll_ioffset == 0x0))) {
1099                                 /* slow VCO config */
1100                                 w100_pwr_state.pll_cntl.f.pll_vcofr = 0x1;
1101                                 w100_pwr_state.pll_cntl.f.pll_pvg = 0x0;
1102                                 w100_pwr_state.pll_cntl.f.pll_ioffset = 0x0;
1103                                 continue;
1104                         }
1105                 }
1106                 if ((w100_pwr_state.pll_cntl.f.pll_ioffset) < 0x3) {
1107                         w100_pwr_state.pll_cntl.f.pll_ioffset += 0x1;
1108                 } else if ((w100_pwr_state.pll_cntl.f.pll_pvg) < 0x7) {
1109                         w100_pwr_state.pll_cntl.f.pll_ioffset = 0x0;
1110                         w100_pwr_state.pll_cntl.f.pll_pvg += 0x1;
1111                 } else {
1112                         return 0;  /* Error */
1113                 }
1114         } while(1);
1115 }
1116
1117
1118 /*
1119  * w100_pll_calibration
1120  */
1121 static int w100_pll_calibration(struct w100_pll_info *pll)
1122 {
1123         int status;
1124
1125         status = w100_pll_adjust(pll);
1126
1127         /* PLL Reset And Lock */
1128         /* set VCO input = 0.5 * VDD */
1129         w100_pwr_state.pll_cntl.f.pll_dactal = 0xa;
1130         writel((u32) (w100_pwr_state.pll_cntl.val), remapped_regs + mmPLL_CNTL);
1131
1132         udelay(1);  /* reset time */
1133
1134         /* enable charge pump */
1135         w100_pwr_state.pll_cntl.f.pll_tcpoff = 0x0;  /* normal */
1136         writel((u32) (w100_pwr_state.pll_cntl.val), remapped_regs + mmPLL_CNTL);
1137
1138         /* set VCO input = Hi-Z, disable DAC */
1139         w100_pwr_state.pll_cntl.f.pll_dactal = 0x0;
1140         writel((u32) (w100_pwr_state.pll_cntl.val), remapped_regs + mmPLL_CNTL);
1141
1142         udelay(400);  /* lock time */
1143
1144         /* PLL locked */
1145
1146         return status;
1147 }
1148
1149
1150 static int w100_pll_set_clk(struct w100_pll_info *pll)
1151 {
1152         int status;
1153
1154         if (w100_pwr_state.auto_mode == 1)  /* auto mode */
1155         {
1156                 w100_pwr_state.pwrmgt_cntl.f.pwm_fast_noml_hw_en = 0x0;  /* disable fast to normal */
1157                 w100_pwr_state.pwrmgt_cntl.f.pwm_noml_fast_hw_en = 0x0;  /* disable normal to fast */
1158                 writel((u32) (w100_pwr_state.pwrmgt_cntl.val), remapped_regs + mmPWRMGT_CNTL);
1159         }
1160
1161         /* Set system clock source to XTAL whilst adjusting the PLL! */
1162         w100_pwr_state.sclk_cntl.f.sclk_src_sel = CLK_SRC_XTAL;
1163         writel((u32) (w100_pwr_state.sclk_cntl.val), remapped_regs + mmSCLK_CNTL);
1164
1165         w100_pwr_state.pll_ref_fb_div.f.pll_ref_div = pll->M;
1166         w100_pwr_state.pll_ref_fb_div.f.pll_fb_div_int = pll->N_int;
1167         w100_pwr_state.pll_ref_fb_div.f.pll_fb_div_frac = pll->N_fac;
1168         w100_pwr_state.pll_ref_fb_div.f.pll_lock_time = pll->lock_time;
1169         writel((u32) (w100_pwr_state.pll_ref_fb_div.val), remapped_regs + mmPLL_REF_FB_DIV);
1170
1171         w100_pwr_state.pwrmgt_cntl.f.pwm_mode_req = 0;
1172         writel((u32) (w100_pwr_state.pwrmgt_cntl.val), remapped_regs + mmPWRMGT_CNTL);
1173
1174         status = w100_pll_calibration(pll);
1175
1176         if (w100_pwr_state.auto_mode == 1)  /* auto mode */
1177         {
1178                 w100_pwr_state.pwrmgt_cntl.f.pwm_fast_noml_hw_en = 0x1;  /* reenable fast to normal */
1179                 w100_pwr_state.pwrmgt_cntl.f.pwm_noml_fast_hw_en = 0x1;  /* reenable normal to fast  */
1180                 writel((u32) (w100_pwr_state.pwrmgt_cntl.val), remapped_regs + mmPWRMGT_CNTL);
1181         }
1182         return status;
1183 }
1184
1185 /* freq = target frequency of the PLL */
1186 static int w100_set_pll_freq(struct w100fb_par *par, unsigned int freq)
1187 {
1188         struct w100_pll_info *pll = par->pll_table;
1189
1190         do {
1191                 if (freq == pll->freq) {
1192                         return w100_pll_set_clk(pll);
1193                 }
1194                 pll++;
1195         } while(pll->freq);
1196         return 0;
1197 }
1198
1199 /* Set up an initial state.  Some values/fields set
1200    here will be overwritten. */
1201 static void w100_pwm_setup(struct w100fb_par *par)
1202 {
1203         w100_pwr_state.clk_pin_cntl.f.osc_en = 0x1;
1204         w100_pwr_state.clk_pin_cntl.f.osc_gain = 0x1f;
1205         w100_pwr_state.clk_pin_cntl.f.dont_use_xtalin = 0x0;
1206         w100_pwr_state.clk_pin_cntl.f.xtalin_pm_en = 0x0;
1207         w100_pwr_state.clk_pin_cntl.f.xtalin_dbl_en = par->mach->xtal_dbl ? 1 : 0;
1208         w100_pwr_state.clk_pin_cntl.f.cg_debug = 0x0;
1209         writel((u32) (w100_pwr_state.clk_pin_cntl.val), remapped_regs + mmCLK_PIN_CNTL);
1210
1211         w100_pwr_state.sclk_cntl.f.sclk_src_sel = CLK_SRC_XTAL;
1212         w100_pwr_state.sclk_cntl.f.sclk_post_div_fast = 0x0;  /* Pfast = 1 */
1213         w100_pwr_state.sclk_cntl.f.sclk_clkon_hys = 0x3;
1214         w100_pwr_state.sclk_cntl.f.sclk_post_div_slow = 0x0;  /* Pslow = 1 */
1215         w100_pwr_state.sclk_cntl.f.disp_cg_ok2switch_en = 0x0;
1216         w100_pwr_state.sclk_cntl.f.sclk_force_reg = 0x0;    /* Dynamic */
1217         w100_pwr_state.sclk_cntl.f.sclk_force_disp = 0x0;   /* Dynamic */
1218         w100_pwr_state.sclk_cntl.f.sclk_force_mc = 0x0;     /* Dynamic */
1219         w100_pwr_state.sclk_cntl.f.sclk_force_extmc = 0x0;  /* Dynamic */
1220         w100_pwr_state.sclk_cntl.f.sclk_force_cp = 0x0;     /* Dynamic */
1221         w100_pwr_state.sclk_cntl.f.sclk_force_e2 = 0x0;     /* Dynamic */
1222         w100_pwr_state.sclk_cntl.f.sclk_force_e3 = 0x0;     /* Dynamic */
1223         w100_pwr_state.sclk_cntl.f.sclk_force_idct = 0x0;   /* Dynamic */
1224         w100_pwr_state.sclk_cntl.f.sclk_force_bist = 0x0;   /* Dynamic */
1225         w100_pwr_state.sclk_cntl.f.busy_extend_cp = 0x0;
1226         w100_pwr_state.sclk_cntl.f.busy_extend_e2 = 0x0;
1227         w100_pwr_state.sclk_cntl.f.busy_extend_e3 = 0x0;
1228         w100_pwr_state.sclk_cntl.f.busy_extend_idct = 0x0;
1229         writel((u32) (w100_pwr_state.sclk_cntl.val), remapped_regs + mmSCLK_CNTL);
1230
1231         w100_pwr_state.pclk_cntl.f.pclk_src_sel = CLK_SRC_XTAL;
1232         w100_pwr_state.pclk_cntl.f.pclk_post_div = 0x1;    /* P = 2 */
1233         w100_pwr_state.pclk_cntl.f.pclk_force_disp = 0x0;  /* Dynamic */
1234         writel((u32) (w100_pwr_state.pclk_cntl.val), remapped_regs + mmPCLK_CNTL);
1235
1236         w100_pwr_state.pll_ref_fb_div.f.pll_ref_div = 0x0;     /* M = 1 */
1237         w100_pwr_state.pll_ref_fb_div.f.pll_fb_div_int = 0x0;  /* N = 1.0 */
1238         w100_pwr_state.pll_ref_fb_div.f.pll_fb_div_frac = 0x0;
1239         w100_pwr_state.pll_ref_fb_div.f.pll_reset_time = 0x5;
1240         w100_pwr_state.pll_ref_fb_div.f.pll_lock_time = 0xff;
1241         writel((u32) (w100_pwr_state.pll_ref_fb_div.val), remapped_regs + mmPLL_REF_FB_DIV);
1242
1243         w100_pwr_state.pll_cntl.f.pll_pwdn = 0x1;
1244         w100_pwr_state.pll_cntl.f.pll_reset = 0x1;
1245         w100_pwr_state.pll_cntl.f.pll_pm_en = 0x0;
1246         w100_pwr_state.pll_cntl.f.pll_mode = 0x0;  /* uses VCO clock */
1247         w100_pwr_state.pll_cntl.f.pll_refclk_sel = 0x0;
1248         w100_pwr_state.pll_cntl.f.pll_fbclk_sel = 0x0;
1249         w100_pwr_state.pll_cntl.f.pll_tcpoff = 0x0;
1250         w100_pwr_state.pll_cntl.f.pll_pcp = 0x4;
1251         w100_pwr_state.pll_cntl.f.pll_pvg = 0x0;
1252         w100_pwr_state.pll_cntl.f.pll_vcofr = 0x0;
1253         w100_pwr_state.pll_cntl.f.pll_ioffset = 0x0;
1254         w100_pwr_state.pll_cntl.f.pll_pecc_mode = 0x0;
1255         w100_pwr_state.pll_cntl.f.pll_pecc_scon = 0x0;
1256         w100_pwr_state.pll_cntl.f.pll_dactal = 0x0;  /* Hi-Z */
1257         w100_pwr_state.pll_cntl.f.pll_cp_clip = 0x3;
1258         w100_pwr_state.pll_cntl.f.pll_conf = 0x2;
1259         w100_pwr_state.pll_cntl.f.pll_mbctrl = 0x2;
1260         w100_pwr_state.pll_cntl.f.pll_ring_off = 0x0;
1261         writel((u32) (w100_pwr_state.pll_cntl.val), remapped_regs + mmPLL_CNTL);
1262
1263         w100_pwr_state.pwrmgt_cntl.f.pwm_enable = 0x0;
1264         w100_pwr_state.pwrmgt_cntl.f.pwm_mode_req = 0x1;  /* normal mode (0, 1, 3) */
1265         w100_pwr_state.pwrmgt_cntl.f.pwm_wakeup_cond = 0x0;
1266         w100_pwr_state.pwrmgt_cntl.f.pwm_fast_noml_hw_en = 0x0;
1267         w100_pwr_state.pwrmgt_cntl.f.pwm_noml_fast_hw_en = 0x0;
1268         w100_pwr_state.pwrmgt_cntl.f.pwm_fast_noml_cond = 0x1;  /* PM4,ENG */
1269         w100_pwr_state.pwrmgt_cntl.f.pwm_noml_fast_cond = 0x1;  /* PM4,ENG */
1270         w100_pwr_state.pwrmgt_cntl.f.pwm_idle_timer = 0xFF;
1271         w100_pwr_state.pwrmgt_cntl.f.pwm_busy_timer = 0xFF;
1272         writel((u32) (w100_pwr_state.pwrmgt_cntl.val), remapped_regs + mmPWRMGT_CNTL);
1273
1274         w100_pwr_state.auto_mode = 0;  /* manual mode */
1275 }
1276
1277
1278 /*
1279  * Setup the w100 clocks for the specified mode
1280  */
1281 static void w100_init_clocks(struct w100fb_par *par)
1282 {
1283         struct w100_mode *mode = par->mode;
1284
1285         if (mode->pixclk_src == CLK_SRC_PLL || mode->sysclk_src == CLK_SRC_PLL)
1286                 w100_set_pll_freq(par, (par->fastpll_mode && mode->fast_pll_freq) ? mode->fast_pll_freq : mode->pll_freq);
1287
1288         w100_pwr_state.sclk_cntl.f.sclk_src_sel = mode->sysclk_src;
1289         w100_pwr_state.sclk_cntl.f.sclk_post_div_fast = mode->sysclk_divider;
1290         w100_pwr_state.sclk_cntl.f.sclk_post_div_slow = mode->sysclk_divider;
1291         writel((u32) (w100_pwr_state.sclk_cntl.val), remapped_regs + mmSCLK_CNTL);
1292 }
1293
1294 static void w100_init_lcd(struct w100fb_par *par)
1295 {
1296         u32 temp32;
1297         struct w100_mode *mode = par->mode;
1298         struct w100_gen_regs *regs = par->mach->regs;
1299         union active_h_disp_u active_h_disp;
1300         union active_v_disp_u active_v_disp;
1301         union graphic_h_disp_u graphic_h_disp;
1302         union graphic_v_disp_u graphic_v_disp;
1303         union crtc_total_u crtc_total;
1304
1305         /* w3200 doesnt like undefined bits being set so zero register values first */
1306
1307         active_h_disp.val = 0;
1308         active_h_disp.f.active_h_start=mode->left_margin;
1309         active_h_disp.f.active_h_end=mode->left_margin + mode->xres;
1310         writel(active_h_disp.val, remapped_regs + mmACTIVE_H_DISP);
1311
1312         active_v_disp.val = 0;
1313         active_v_disp.f.active_v_start=mode->upper_margin;
1314         active_v_disp.f.active_v_end=mode->upper_margin + mode->yres;
1315         writel(active_v_disp.val, remapped_regs + mmACTIVE_V_DISP);
1316
1317         graphic_h_disp.val = 0;
1318         graphic_h_disp.f.graphic_h_start=mode->left_margin;
1319         graphic_h_disp.f.graphic_h_end=mode->left_margin + mode->xres;
1320         writel(graphic_h_disp.val, remapped_regs + mmGRAPHIC_H_DISP);
1321
1322         graphic_v_disp.val = 0;
1323         graphic_v_disp.f.graphic_v_start=mode->upper_margin;
1324         graphic_v_disp.f.graphic_v_end=mode->upper_margin + mode->yres;
1325         writel(graphic_v_disp.val, remapped_regs + mmGRAPHIC_V_DISP);
1326
1327         crtc_total.val = 0;
1328         crtc_total.f.crtc_h_total=mode->left_margin  + mode->xres + mode->right_margin;
1329         crtc_total.f.crtc_v_total=mode->upper_margin + mode->yres + mode->lower_margin;
1330         writel(crtc_total.val, remapped_regs + mmCRTC_TOTAL);
1331
1332         writel(mode->crtc_ss, remapped_regs + mmCRTC_SS);
1333         writel(mode->crtc_ls, remapped_regs + mmCRTC_LS);
1334         writel(mode->crtc_gs, remapped_regs + mmCRTC_GS);
1335         writel(mode->crtc_vpos_gs, remapped_regs + mmCRTC_VPOS_GS);
1336         writel(mode->crtc_rev, remapped_regs + mmCRTC_REV);
1337         writel(mode->crtc_dclk, remapped_regs + mmCRTC_DCLK);
1338         writel(mode->crtc_gclk, remapped_regs + mmCRTC_GCLK);
1339         writel(mode->crtc_goe, remapped_regs + mmCRTC_GOE);
1340         writel(mode->crtc_ps1_active, remapped_regs + mmCRTC_PS1_ACTIVE);
1341
1342         writel(regs->lcd_format, remapped_regs + mmLCD_FORMAT);
1343         writel(regs->lcdd_cntl1, remapped_regs + mmLCDD_CNTL1);
1344         writel(regs->lcdd_cntl2, remapped_regs + mmLCDD_CNTL2);
1345         writel(regs->genlcd_cntl1, remapped_regs + mmGENLCD_CNTL1);
1346         writel(regs->genlcd_cntl2, remapped_regs + mmGENLCD_CNTL2);
1347         writel(regs->genlcd_cntl3, remapped_regs + mmGENLCD_CNTL3);
1348
1349         writel(0x00000000, remapped_regs + mmCRTC_FRAME);
1350         writel(0x00000000, remapped_regs + mmCRTC_FRAME_VPOS);
1351         writel(0x00000000, remapped_regs + mmCRTC_DEFAULT_COUNT);
1352         writel(0x0000FF00, remapped_regs + mmLCD_BACKGROUND_COLOR);
1353
1354         /* Hack for overlay in ext memory */
1355         temp32 = readl(remapped_regs + mmDISP_DEBUG2);
1356         temp32 |= 0xc0000000;
1357         writel(temp32, remapped_regs + mmDISP_DEBUG2);
1358 }
1359
1360
1361 static void w100_setup_memory(struct w100fb_par *par)
1362 {
1363         union mc_ext_mem_location_u extmem_location;
1364         union mc_fb_location_u intmem_location;
1365         struct w100_mem_info *mem = par->mach->mem;
1366         struct w100_bm_mem_info *bm_mem = par->mach->bm_mem;
1367
1368         if (!par->extmem_active) {
1369                 w100_suspend(W100_SUSPEND_EXTMEM);
1370
1371                 /* Map Internal Memory at FB Base */
1372                 intmem_location.f.mc_fb_start = W100_FB_BASE >> 8;
1373                 intmem_location.f.mc_fb_top = (W100_FB_BASE+MEM_INT_SIZE) >> 8;
1374                 writel((u32) (intmem_location.val), remapped_regs + mmMC_FB_LOCATION);
1375
1376                 /* Unmap External Memory - value is *probably* irrelevant but may have meaning
1377                    to acceleration libraries */
1378                 extmem_location.f.mc_ext_mem_start = MEM_EXT_BASE_VALUE >> 8;
1379                 extmem_location.f.mc_ext_mem_top = (MEM_EXT_BASE_VALUE-1) >> 8;
1380                 writel((u32) (extmem_location.val), remapped_regs + mmMC_EXT_MEM_LOCATION);
1381         } else {
1382                 /* Map Internal Memory to its default location */
1383                 intmem_location.f.mc_fb_start = MEM_INT_BASE_VALUE >> 8;
1384                 intmem_location.f.mc_fb_top = (MEM_INT_BASE_VALUE+MEM_INT_SIZE) >> 8;
1385                 writel((u32) (intmem_location.val), remapped_regs + mmMC_FB_LOCATION);
1386
1387                 /* Map External Memory at FB Base */
1388                 extmem_location.f.mc_ext_mem_start = W100_FB_BASE >> 8;
1389                 extmem_location.f.mc_ext_mem_top = (W100_FB_BASE+par->mach->mem->size) >> 8;
1390                 writel((u32) (extmem_location.val), remapped_regs + mmMC_EXT_MEM_LOCATION);
1391
1392                 writel(0x00007800, remapped_regs + mmMC_BIST_CTRL);
1393                 writel(mem->ext_cntl, remapped_regs + mmMEM_EXT_CNTL);
1394                 writel(0x00200021, remapped_regs + mmMEM_SDRAM_MODE_REG);
1395                 udelay(100);
1396                 writel(0x80200021, remapped_regs + mmMEM_SDRAM_MODE_REG);
1397                 udelay(100);
1398                 writel(mem->sdram_mode_reg, remapped_regs + mmMEM_SDRAM_MODE_REG);
1399                 udelay(100);
1400                 writel(mem->ext_timing_cntl, remapped_regs + mmMEM_EXT_TIMING_CNTL);
1401                 writel(mem->io_cntl, remapped_regs + mmMEM_IO_CNTL);
1402                 if (bm_mem) {
1403                         writel(bm_mem->ext_mem_bw, remapped_regs + mmBM_EXT_MEM_BANDWIDTH);
1404                         writel(bm_mem->offset, remapped_regs + mmBM_OFFSET);
1405                         writel(bm_mem->ext_timing_ctl, remapped_regs + mmBM_MEM_EXT_TIMING_CNTL);
1406                         writel(bm_mem->ext_cntl, remapped_regs + mmBM_MEM_EXT_CNTL);
1407                         writel(bm_mem->mode_reg, remapped_regs + mmBM_MEM_MODE_REG);
1408                         writel(bm_mem->io_cntl, remapped_regs + mmBM_MEM_IO_CNTL);
1409                         writel(bm_mem->config, remapped_regs + mmBM_CONFIG);
1410                 }
1411         }
1412 }
1413
1414 static void w100_set_dispregs(struct w100fb_par *par)
1415 {
1416         unsigned long rot=0, divider, offset=0;
1417         union graphic_ctrl_u graphic_ctrl;
1418
1419         /* See if the mode has been rotated */
1420         if (par->xres == par->mode->xres) {
1421                 if (par->flip) {
1422                         rot=3; /* 180 degree */
1423                         offset=(par->xres * par->yres) - 1;
1424                 } /* else 0 degree */
1425                 divider = par->mode->pixclk_divider;
1426         } else {
1427                 if (par->flip) {
1428                         rot=2; /* 270 degree */
1429                         offset=par->xres - 1;
1430                 } else {
1431                         rot=1; /* 90 degree */
1432                         offset=par->xres * (par->yres - 1);
1433                 }
1434                 divider = par->mode->pixclk_divider_rotated;
1435         }
1436
1437         graphic_ctrl.val = 0; /* w32xx doesn't like undefined bits */
1438         switch (par->chip_id) {
1439                 case CHIP_ID_W100:
1440                         graphic_ctrl.f_w100.color_depth=6;
1441                         graphic_ctrl.f_w100.en_crtc=1;
1442                         graphic_ctrl.f_w100.en_graphic_req=1;
1443                         graphic_ctrl.f_w100.en_graphic_crtc=1;
1444                         graphic_ctrl.f_w100.lcd_pclk_on=1;
1445                         graphic_ctrl.f_w100.lcd_sclk_on=1;
1446                         graphic_ctrl.f_w100.low_power_on=0;
1447                         graphic_ctrl.f_w100.req_freq=0;
1448                         graphic_ctrl.f_w100.portrait_mode=rot;
1449
1450                         /* Zaurus needs this */
1451                         switch(par->xres) {
1452                                 case 240:
1453                                 case 320:
1454                                 default:
1455                                         graphic_ctrl.f_w100.total_req_graphic=0xa0;
1456                                         break;
1457                                 case 480:
1458                                 case 640:
1459                                         switch(rot) {
1460                                                 case 0:  /* 0 */
1461                                                 case 3:  /* 180 */
1462                                                         graphic_ctrl.f_w100.low_power_on=1;
1463                                                         graphic_ctrl.f_w100.req_freq=5;
1464                                                 break;
1465                                                 case 1:  /* 90 */
1466                                                 case 2:  /* 270 */
1467                                                         graphic_ctrl.f_w100.req_freq=4;
1468                                                         break;
1469                                                 default:
1470                                                         break;
1471                                         }
1472                                         graphic_ctrl.f_w100.total_req_graphic=0xf0;
1473                                         break;
1474                         }
1475                         break;
1476                 case CHIP_ID_W3200:
1477                 case CHIP_ID_W3220:
1478                         graphic_ctrl.f_w32xx.color_depth=6;
1479                         graphic_ctrl.f_w32xx.en_crtc=1;
1480                         graphic_ctrl.f_w32xx.en_graphic_req=1;
1481                         graphic_ctrl.f_w32xx.en_graphic_crtc=1;
1482                         graphic_ctrl.f_w32xx.lcd_pclk_on=1;
1483                         graphic_ctrl.f_w32xx.lcd_sclk_on=1;
1484                         graphic_ctrl.f_w32xx.low_power_on=0;
1485                         graphic_ctrl.f_w32xx.req_freq=0;
1486                         graphic_ctrl.f_w32xx.total_req_graphic=par->mode->xres >> 1; /* panel xres, not mode */
1487                         graphic_ctrl.f_w32xx.portrait_mode=rot;
1488                         break;
1489         }
1490
1491         /* Set the pixel clock source and divider */
1492         w100_pwr_state.pclk_cntl.f.pclk_src_sel = par->mode->pixclk_src;
1493         w100_pwr_state.pclk_cntl.f.pclk_post_div = divider;
1494         writel((u32) (w100_pwr_state.pclk_cntl.val), remapped_regs + mmPCLK_CNTL);
1495
1496         writel(graphic_ctrl.val, remapped_regs + mmGRAPHIC_CTRL);
1497         writel(W100_FB_BASE + ((offset * BITS_PER_PIXEL/8)&~0x03UL), remapped_regs + mmGRAPHIC_OFFSET);
1498         writel((par->xres*BITS_PER_PIXEL/8), remapped_regs + mmGRAPHIC_PITCH);
1499 }
1500
1501
1502 /*
1503  * Work out how long the sync pulse lasts
1504  * Value is 1/(time in seconds)
1505  */
1506 static void calc_hsync(struct w100fb_par *par)
1507 {
1508         unsigned long hsync;
1509         struct w100_mode *mode = par->mode;
1510         union crtc_ss_u crtc_ss;
1511
1512         if (mode->pixclk_src == CLK_SRC_XTAL)
1513                 hsync=par->mach->xtal_freq;
1514         else
1515                 hsync=((par->fastpll_mode && mode->fast_pll_freq) ? mode->fast_pll_freq : mode->pll_freq)*100000;
1516
1517         hsync /= (w100_pwr_state.pclk_cntl.f.pclk_post_div + 1);
1518
1519         crtc_ss.val = readl(remapped_regs + mmCRTC_SS);
1520         if (crtc_ss.val)
1521                 par->hsync_len = hsync / (crtc_ss.f.ss_end-crtc_ss.f.ss_start);
1522         else
1523                 par->hsync_len = 0;
1524 }
1525
1526 static void w100_suspend(u32 mode)
1527 {
1528         u32 val;
1529
1530         writel(0x7FFF8000, remapped_regs + mmMC_EXT_MEM_LOCATION);
1531         writel(0x00FF0000, remapped_regs + mmMC_PERF_MON_CNTL);
1532
1533         val = readl(remapped_regs + mmMEM_EXT_TIMING_CNTL);
1534         val &= ~(0x00100000);  /* bit20=0 */
1535         val |= 0xFF000000;     /* bit31:24=0xff */
1536         writel(val, remapped_regs + mmMEM_EXT_TIMING_CNTL);
1537
1538         val = readl(remapped_regs + mmMEM_EXT_CNTL);
1539         val &= ~(0x00040000);  /* bit18=0 */
1540         val |= 0x00080000;     /* bit19=1 */
1541         writel(val, remapped_regs + mmMEM_EXT_CNTL);
1542
1543         udelay(1);  /* wait 1us */
1544
1545         if (mode == W100_SUSPEND_EXTMEM) {
1546                 /* CKE: Tri-State */
1547                 val = readl(remapped_regs + mmMEM_EXT_CNTL);
1548                 val |= 0x40000000;  /* bit30=1 */
1549                 writel(val, remapped_regs + mmMEM_EXT_CNTL);
1550
1551                 /* CLK: Stop */
1552                 val = readl(remapped_regs + mmMEM_EXT_CNTL);
1553                 val &= ~(0x00000001);  /* bit0=0 */
1554                 writel(val, remapped_regs + mmMEM_EXT_CNTL);
1555         } else {
1556                 writel(0x00000000, remapped_regs + mmSCLK_CNTL);
1557                 writel(0x000000BF, remapped_regs + mmCLK_PIN_CNTL);
1558                 writel(0x00000015, remapped_regs + mmPWRMGT_CNTL);
1559
1560                 udelay(5);
1561
1562                 val = readl(remapped_regs + mmPLL_CNTL);
1563                 val |= 0x00000004;  /* bit2=1 */
1564                 writel(val, remapped_regs + mmPLL_CNTL);
1565                 writel(0x0000001d, remapped_regs + mmPWRMGT_CNTL);
1566         }
1567 }
1568
1569 static void w100_vsync(void)
1570 {
1571         u32 tmp;
1572         int timeout = 30000;  /* VSync timeout = 30[ms] > 16.8[ms] */
1573
1574         tmp = readl(remapped_regs + mmACTIVE_V_DISP);
1575
1576         /* set vline pos  */
1577         writel((tmp >> 16) & 0x3ff, remapped_regs + mmDISP_INT_CNTL);
1578
1579         /* disable vline irq */
1580         tmp = readl(remapped_regs + mmGEN_INT_CNTL);
1581
1582         tmp &= ~0x00000002;
1583         writel(tmp, remapped_regs + mmGEN_INT_CNTL);
1584
1585         /* clear vline irq status */
1586         writel(0x00000002, remapped_regs + mmGEN_INT_STATUS);
1587
1588         /* enable vline irq */
1589         writel((tmp | 0x00000002), remapped_regs + mmGEN_INT_CNTL);
1590
1591         /* clear vline irq status */
1592         writel(0x00000002, remapped_regs + mmGEN_INT_STATUS);
1593
1594         while(timeout > 0) {
1595                 if (readl(remapped_regs + mmGEN_INT_STATUS) & 0x00000002)
1596                         break;
1597                 udelay(1);
1598                 timeout--;
1599         }
1600
1601         /* disable vline irq */
1602         writel(tmp, remapped_regs + mmGEN_INT_CNTL);
1603
1604         /* clear vline irq status */
1605         writel(0x00000002, remapped_regs + mmGEN_INT_STATUS);
1606 }
1607
1608 static struct platform_driver w100fb_driver = {
1609         .probe          = w100fb_probe,
1610         .remove         = w100fb_remove,
1611         .suspend        = w100fb_suspend,
1612         .resume         = w100fb_resume,
1613         .driver         = {
1614                 .name   = "w100fb",
1615         },
1616 };
1617
1618 int __devinit w100fb_init(void)
1619 {
1620         return platform_driver_register(&w100fb_driver);
1621 }
1622
1623 void __exit w100fb_cleanup(void)
1624 {
1625         platform_driver_unregister(&w100fb_driver);
1626 }
1627
1628 module_init(w100fb_init);
1629 module_exit(w100fb_cleanup);
1630
1631 MODULE_DESCRIPTION("ATI Imageon w100 framebuffer driver");
1632 MODULE_LICENSE("GPL");