drivers/staging/sm7xxfb/sm7xxfb.c

   1 /*
   2  * Silicon Motion SM7XX frame buffer device
   3  *
   4  * Copyright (C) 2006 Silicon Motion Technology Corp.
   5  * Authors:  Ge Wang, gewang@siliconmotion.com
   6  *           Boyod boyod.yang@siliconmotion.com.cn
   7  *
   8  * Copyright (C) 2009 Lemote, Inc.
   9  * Author:   Wu Zhangjin, wuzhangjin@gmail.com
  10  *
  11  * Copyright (C) 2011 Igalia, S.L.
  12  * Author:   Javier M. Mellid <jmunhoz@igalia.com>
  13  *
  14  * This file is subject to the terms and conditions of the GNU General Public
  15  * License. See the file COPYING in the main directory of this archive for
  16  * more details.
  17  *
  18  * Framebuffer driver for Silicon Motion SM710, SM712, SM721 and SM722 chips
  19  */
  20
  21 #include <linux/io.h>
  22 #include <linux/fb.h>
  23 #include <linux/pci.h>
  24 #include <linux/init.h>
  25 #include <linux/slab.h>
  26 #include <linux/uaccess.h>
  27 #include <linux/module.h>
  28 #include <linux/console.h>
  29 #include <linux/screen_info.h>
  30
  31 #ifdef CONFIG_PM
  32 #include <linux/pm.h>
  33 #endif
  34
  35 #include "sm7xx.h"
  36
  37 /*
  38 * Private structure
  39 */
  40 struct smtcfb_info {
  41         struct pci_dev *pdev;
  42         struct fb_info fb;
  43         u16 chip_id;
  44         u8  chip_rev_id;
  45
  46         void __iomem *lfb;      /* linear frame buffer */
  47         void __iomem *dp_regs;  /* drawing processor control regs */
  48         void __iomem *vp_regs;  /* video processor control regs */
  49         void __iomem *cp_regs;  /* capture processor control regs */
  50         void __iomem *mmio;     /* memory map IO port */
  51
  52         u_int width;
  53         u_int height;
  54         u_int hz;
  55
  56         u32 colreg[17];
  57 };
  58
  59 void __iomem *smtc_regbaseaddress;      /* Memory Map IO starting address */
  60
  61 static struct fb_var_screeninfo smtcfb_var = {
  62         .xres           = 1024,
  63         .yres           = 600,
  64         .xres_virtual   = 1024,
  65         .yres_virtual   = 600,
  66         .bits_per_pixel = 16,
  67         .red            = {16, 8, 0},
  68         .green          = {8, 8, 0},
  69         .blue           = {0, 8, 0},
  70         .activate       = FB_ACTIVATE_NOW,
  71         .height         = -1,
  72         .width          = -1,
  73         .vmode          = FB_VMODE_NONINTERLACED,
  74         .nonstd         = 0,
  75         .accel_flags    = FB_ACCELF_TEXT,
  76 };
  77
  78 static struct fb_fix_screeninfo smtcfb_fix = {
  79         .id             = "smXXXfb",
  80         .type           = FB_TYPE_PACKED_PIXELS,
  81         .visual         = FB_VISUAL_TRUECOLOR,
  82         .line_length    = 800 * 3,
  83         .accel          = FB_ACCEL_SMI_LYNX,
  84         .type_aux       = 0,
  85         .xpanstep       = 0,
  86         .ypanstep       = 0,
  87         .ywrapstep      = 0,
  88 };
  89
  90 struct vesa_mode {
  91         char index[6];
  92         u16  lfb_width;
  93         u16  lfb_height;
  94         u16  lfb_depth;
  95 };
  96
  97 static struct vesa_mode vesa_mode_table[] = {
  98         {"0x301", 640,  480,  8},
  99         {"0x303", 800,  600,  8},
 100         {"0x305", 1024, 768,  8},
 101         {"0x307", 1280, 1024, 8},
 102
 103         {"0x311", 640,  480,  16},
 104         {"0x314", 800,  600,  16},
 105         {"0x317", 1024, 768,  16},
 106         {"0x31A", 1280, 1024, 16},
 107
 108         {"0x312", 640,  480,  24},
 109         {"0x315", 800,  600,  24},
 110         {"0x318", 1024, 768,  24},
 111         {"0x31B", 1280, 1024, 24},
 112 };
 113
 114 static struct screen_info smtc_scr_info;
 115
 116 /* process command line options, get vga parameter */
 117 static int __init sm7xx_vga_setup(char *options)
 118 {
 119         int i;
 120
 121         if (!options || !*options)
 122                 return -EINVAL;
 123
 124         smtc_scr_info.lfb_width = 0;
 125         smtc_scr_info.lfb_height = 0;
 126         smtc_scr_info.lfb_depth = 0;
 127
 128         pr_debug("sm7xx_vga_setup = %s\n", options);
 129
 130         for (i = 0; i < ARRAY_SIZE(vesa_mode_table); i++) {
 131                 if (strstr(options, vesa_mode_table[i].index)) {
 132                         smtc_scr_info.lfb_width  = vesa_mode_table[i].lfb_width;
 133                         smtc_scr_info.lfb_height =
 134                                                 vesa_mode_table[i].lfb_height;
 135                         smtc_scr_info.lfb_depth  = vesa_mode_table[i].lfb_depth;
 136                         return 0;
 137                 }
 138         }
 139
 140         return -1;
 141 }
 142 __setup("vga=", sm7xx_vga_setup);
 143
 144 static void sm712_setpalette(int regno, unsigned red, unsigned green,
 145                              unsigned blue, struct fb_info *info)
 146 {
 147         /* set bit 5:4 = 01 (write LCD RAM only) */
 148         smtc_seqw(0x66, (smtc_seqr(0x66) & 0xC3) | 0x10);
 149
 150         smtc_mmiowb(regno, dac_reg);
 151         smtc_mmiowb(red >> 10, dac_val);
 152         smtc_mmiowb(green >> 10, dac_val);
 153         smtc_mmiowb(blue >> 10, dac_val);
 154 }
 155
 156 /* chan_to_field
 157  *
 158  * convert a colour value into a field position
 159  *
 160  * from pxafb.c
 161  */
 162
 163 static inline unsigned int chan_to_field(unsigned int chan,
 164                                          struct fb_bitfield *bf)
 165 {
 166         chan &= 0xffff;
 167         chan >>= 16 - bf->length;
 168         return chan << bf->offset;
 169 }
 170
 171 static int smtc_blank(int blank_mode, struct fb_info *info)
 172 {
 173         /* clear DPMS setting */
 174         switch (blank_mode) {
 175         case FB_BLANK_UNBLANK:
 176                 /* Screen On: HSync: On, VSync : On */
 177                 smtc_seqw(0x01, (smtc_seqr(0x01) & (~0x20)));
 178                 smtc_seqw(0x6a, 0x16);
 179                 smtc_seqw(0x6b, 0x02);
 180                 smtc_seqw(0x21, (smtc_seqr(0x21) & 0x77));
 181                 smtc_seqw(0x22, (smtc_seqr(0x22) & (~0x30)));
 182                 smtc_seqw(0x23, (smtc_seqr(0x23) & (~0xc0)));
 183                 smtc_seqw(0x24, (smtc_seqr(0x24) | 0x01));
 184                 smtc_seqw(0x31, (smtc_seqr(0x31) | 0x03));
 185                 break;
 186         case FB_BLANK_NORMAL:
 187                 /* Screen Off: HSync: On, VSync : On   Soft blank */
 188                 smtc_seqw(0x01, (smtc_seqr(0x01) & (~0x20)));
 189                 smtc_seqw(0x6a, 0x16);
 190                 smtc_seqw(0x6b, 0x02);
 191                 smtc_seqw(0x22, (smtc_seqr(0x22) & (~0x30)));
 192                 smtc_seqw(0x23, (smtc_seqr(0x23) & (~0xc0)));
 193                 smtc_seqw(0x24, (smtc_seqr(0x24) | 0x01));
 194                 smtc_seqw(0x31, ((smtc_seqr(0x31) & (~0x07)) | 0x00));
 195                 break;
 196         case FB_BLANK_VSYNC_SUSPEND:
 197                 /* Screen On: HSync: On, VSync : Off */
 198                 smtc_seqw(0x01, (smtc_seqr(0x01) | 0x20));
 199                 smtc_seqw(0x20, (smtc_seqr(0x20) & (~0xB0)));
 200                 smtc_seqw(0x6a, 0x0c);
 201                 smtc_seqw(0x6b, 0x02);
 202                 smtc_seqw(0x21, (smtc_seqr(0x21) | 0x88));
 203                 smtc_seqw(0x22, ((smtc_seqr(0x22) & (~0x30)) | 0x20));
 204                 smtc_seqw(0x23, ((smtc_seqr(0x23) & (~0xc0)) | 0x20));
 205                 smtc_seqw(0x24, (smtc_seqr(0x24) & (~0x01)));
 206                 smtc_seqw(0x31, ((smtc_seqr(0x31) & (~0x07)) | 0x00));
 207                 smtc_seqw(0x34, (smtc_seqr(0x34) | 0x80));
 208                 break;
 209         case FB_BLANK_HSYNC_SUSPEND:
 210                 /* Screen On: HSync: Off, VSync : On */
 211                 smtc_seqw(0x01, (smtc_seqr(0x01) | 0x20));
 212                 smtc_seqw(0x20, (smtc_seqr(0x20) & (~0xB0)));
 213                 smtc_seqw(0x6a, 0x0c);
 214                 smtc_seqw(0x6b, 0x02);
 215                 smtc_seqw(0x21, (smtc_seqr(0x21) | 0x88));
 216                 smtc_seqw(0x22, ((smtc_seqr(0x22) & (~0x30)) | 0x10));
 217                 smtc_seqw(0x23, ((smtc_seqr(0x23) & (~0xc0)) | 0xD8));
 218                 smtc_seqw(0x24, (smtc_seqr(0x24) & (~0x01)));
 219                 smtc_seqw(0x31, ((smtc_seqr(0x31) & (~0x07)) | 0x00));
 220                 smtc_seqw(0x34, (smtc_seqr(0x34) | 0x80));
 221                 break;
 222         case FB_BLANK_POWERDOWN:
 223                 /* Screen On: HSync: Off, VSync : Off */
 224                 smtc_seqw(0x01, (smtc_seqr(0x01) | 0x20));
 225                 smtc_seqw(0x20, (smtc_seqr(0x20) & (~0xB0)));
 226                 smtc_seqw(0x6a, 0x0c);
 227                 smtc_seqw(0x6b, 0x02);
 228                 smtc_seqw(0x21, (smtc_seqr(0x21) | 0x88));
 229                 smtc_seqw(0x22, ((smtc_seqr(0x22) & (~0x30)) | 0x30));
 230                 smtc_seqw(0x23, ((smtc_seqr(0x23) & (~0xc0)) | 0xD8));
 231                 smtc_seqw(0x24, (smtc_seqr(0x24) & (~0x01)));
 232                 smtc_seqw(0x31, ((smtc_seqr(0x31) & (~0x07)) | 0x00));
 233                 smtc_seqw(0x34, (smtc_seqr(0x34) | 0x80));
 234                 break;
 235         default:
 236                 return -EINVAL;
 237         }
 238
 239         return 0;
 240 }
 241
 242 static int smtc_setcolreg(unsigned regno, unsigned red, unsigned green,
 243                           unsigned blue, unsigned trans, struct fb_info *info)
 244 {
 245         struct smtcfb_info *sfb;
 246         u32 val;
 247
 248         sfb = info->par;
 249
 250         if (regno > 255)
 251                 return 1;
 252
 253         switch (sfb->fb.fix.visual) {
 254         case FB_VISUAL_DIRECTCOLOR:
 255         case FB_VISUAL_TRUECOLOR:
 256                 /*
 257                  * 16/32 bit true-colour, use pseudo-palette for 16 base color
 258                  */
 259                 if (regno < 16) {
 260                         if (sfb->fb.var.bits_per_pixel == 16) {
 261                                 u32 *pal = sfb->fb.pseudo_palette;
 262
 263                                 val = chan_to_field(red, &sfb->fb.var.red);
 264                                 val |= chan_to_field(green, &sfb->fb.var.green);
 265                                 val |= chan_to_field(blue, &sfb->fb.var.blue);
 266 #ifdef __BIG_ENDIAN
 267                                 pal[regno] =
 268                                     ((red & 0xf800) >> 8) |
 269                                     ((green & 0xe000) >> 13) |
 270                                     ((green & 0x1c00) << 3) |
 271                                     ((blue & 0xf800) >> 3);
 272 #else
 273                                 pal[regno] = val;
 274 #endif
 275                         } else {
 276                                 u32 *pal = sfb->fb.pseudo_palette;
 277
 278                                 val = chan_to_field(red, &sfb->fb.var.red);
 279                                 val |= chan_to_field(green, &sfb->fb.var.green);
 280                                 val |= chan_to_field(blue, &sfb->fb.var.blue);
 281 #ifdef __BIG_ENDIAN
 282                                 val =
 283                                     (val & 0xff00ff00 >> 8) |
 284                                     (val & 0x00ff00ff << 8);
 285 #endif
 286                                 pal[regno] = val;
 287                         }
 288                 }
 289                 break;
 290
 291         case FB_VISUAL_PSEUDOCOLOR:
 292                 /* color depth 8 bit */
 293                 sm712_setpalette(regno, red, green, blue, info);
 294                 break;
 295
 296         default:
 297                 return 1;       /* unknown type */
 298         }
 299
 300         return 0;
 301 }
 302
 303 #ifdef __BIG_ENDIAN
 304 static ssize_t smtcfb_read(struct fb_info *info, char __user *buf, size_t
 305                                 count, loff_t *ppos)
 306 {
 307         unsigned long p = *ppos;
 308
 309         u32 *buffer, *dst;
 310         u32 __iomem *src;
 311         int c, i, cnt = 0, err = 0;
 312         unsigned long total_size;
 313
 314         if (!info || !info->screen_base)
 315                 return -ENODEV;
 316
 317         if (info->state != FBINFO_STATE_RUNNING)
 318                 return -EPERM;
 319
 320         total_size = info->screen_size;
 321
 322         if (total_size == 0)
 323                 total_size = info->fix.smem_len;
 324
 325         if (p >= total_size)
 326                 return 0;
 327
 328         if (count >= total_size)
 329                 count = total_size;
 330
 331         if (count + p > total_size)
 332                 count = total_size - p;
 333
 334         buffer = kmalloc((count > PAGE_SIZE) ? PAGE_SIZE : count, GFP_KERNEL);
 335         if (!buffer)
 336                 return -ENOMEM;
 337
 338         src = (u32 __iomem *) (info->screen_base + p);
 339
 340         if (info->fbops->fb_sync)
 341                 info->fbops->fb_sync(info);
 342
 343         while (count) {
 344                 c = (count > PAGE_SIZE) ? PAGE_SIZE : count;
 345                 dst = buffer;
 346                 for (i = c >> 2; i--;) {
 347                         *dst = fb_readl(src++);
 348                         *dst =
 349                             (*dst & 0xff00ff00 >> 8) |
 350                             (*dst & 0x00ff00ff << 8);
 351                         dst++;
 352                 }
 353                 if (c & 3) {
 354                         u8 *dst8 = (u8 *)dst;
 355                         u8 __iomem *src8 = (u8 __iomem *)src;
 356
 357                         for (i = c & 3; i--;) {
 358                                 if (i & 1) {
 359                                         *dst8++ = fb_readb(++src8);
 360                                 } else {
 361                                         *dst8++ = fb_readb(--src8);
 362                                         src8 += 2;
 363                                 }
 364                         }
 365                         src = (u32 __iomem *)src8;
 366                 }
 367
 368                 if (copy_to_user(buf, buffer, c)) {
 369                         err = -EFAULT;
 370                         break;
 371                 }
 372                 *ppos += c;
 373                 buf += c;
 374                 cnt += c;
 375                 count -= c;
 376         }
 377
 378         kfree(buffer);
 379
 380         return (err) ? err : cnt;
 381 }
 382
 383 static ssize_t
 384 smtcfb_write(struct fb_info *info, const char __user *buf, size_t count,
 385              loff_t *ppos)
 386 {
 387         unsigned long p = *ppos;
 388
 389         u32 *buffer, *src;
 390         u32 __iomem *dst;
 391         int c, i, cnt = 0, err = 0;
 392         unsigned long total_size;
 393
 394         if (!info || !info->screen_base)
 395                 return -ENODEV;
 396
 397         if (info->state != FBINFO_STATE_RUNNING)
 398                 return -EPERM;
 399
 400         total_size = info->screen_size;
 401
 402         if (total_size == 0)
 403                 total_size = info->fix.smem_len;
 404
 405         if (p > total_size)
 406                 return -EFBIG;
 407
 408         if (count > total_size) {
 409                 err = -EFBIG;
 410                 count = total_size;
 411         }
 412
 413         if (count + p > total_size) {
 414                 if (!err)
 415                         err = -ENOSPC;
 416
 417                 count = total_size - p;
 418         }
 419
 420         buffer = kmalloc((count > PAGE_SIZE) ? PAGE_SIZE : count, GFP_KERNEL);
 421         if (!buffer)
 422                 return -ENOMEM;
 423
 424         dst = (u32 __iomem *) (info->screen_base + p);
 425
 426         if (info->fbops->fb_sync)
 427                 info->fbops->fb_sync(info);
 428
 429         while (count) {
 430                 c = (count > PAGE_SIZE) ? PAGE_SIZE : count;
 431                 src = buffer;
 432
 433                 if (copy_from_user(src, buf, c)) {
 434                         err = -EFAULT;
 435                         break;
 436                 }
 437
 438                 for (i = c >> 2; i--;) {
 439                         fb_writel((*src & 0xff00ff00 >> 8) |
 440                                   (*src & 0x00ff00ff << 8), dst++);
 441                         src++;
 442                 }
 443                 if (c & 3) {
 444                         u8 *src8 = (u8 *)src;
 445                         u8 __iomem *dst8 = (u8 __iomem *)dst;
 446
 447                         for (i = c & 3; i--;) {
 448                                 if (i & 1) {
 449                                         fb_writeb(*src8++, ++dst8);
 450                                 } else {
 451                                         fb_writeb(*src8++, --dst8);
 452                                         dst8 += 2;
 453                                 }
 454                         }
 455                         dst = (u32 __iomem *)dst8;
 456                 }
 457
 458                 *ppos += c;
 459                 buf += c;
 460                 cnt += c;
 461                 count -= c;
 462         }
 463
 464         kfree(buffer);
 465
 466         return (cnt) ? cnt : err;
 467 }
 468 #endif  /* ! __BIG_ENDIAN */
 469
 470 static void sm7xx_set_timing(struct smtcfb_info *sfb)
 471 {
 472         int i = 0, j = 0;
 473         u32 m_nscreenstride;
 474
 475         dev_dbg(&sfb->pdev->dev,
 476                 "sfb->width=%d sfb->height=%d sfb->fb.var.bits_per_pixel=%d sfb->hz=%d\n",
 477                 sfb->width, sfb->height, sfb->fb.var.bits_per_pixel, sfb->hz);
 478
 479         for (j = 0; j < numvgamodes; j++) {
 480                 if (vgamode[j].mmsizex == sfb->width &&
 481                     vgamode[j].mmsizey == sfb->height &&
 482                     vgamode[j].bpp == sfb->fb.var.bits_per_pixel &&
 483                     vgamode[j].hz == sfb->hz) {
 484                         dev_dbg(&sfb->pdev->dev,
 485                                 "vgamode[j].mmsizex=%d vgamode[j].mmSizeY=%d vgamode[j].bpp=%d vgamode[j].hz=%d\n",
 486                                 vgamode[j].mmsizex, vgamode[j].mmsizey,
 487                                 vgamode[j].bpp, vgamode[j].hz);
 488
 489                         dev_dbg(&sfb->pdev->dev, "vgamode index=%d\n", j);
 490
 491                         smtc_mmiowb(0x0, 0x3c6);
 492
 493                         smtc_seqw(0, 0x1);
 494
 495                         smtc_mmiowb(vgamode[j].init_misc, 0x3c2);
 496
 497                         /* init SEQ register SR00 - SR04 */
 498                         for (i = 0; i < SIZE_SR00_SR04; i++)
 499                                 smtc_seqw(i, vgamode[j].init_sr00_sr04[i]);
 500
 501                         /* init SEQ register SR10 - SR24 */
 502                         for (i = 0; i < SIZE_SR10_SR24; i++)
 503                                 smtc_seqw(i + 0x10,
 504                                           vgamode[j].init_sr10_sr24[i]);
 505
 506                         /* init SEQ register SR30 - SR75 */
 507                         for (i = 0; i < SIZE_SR30_SR75; i++)
 508                                 if ((i + 0x30) != 0x62 &&
 509                                     (i + 0x30) != 0x6a &&
 510                                     (i + 0x30) != 0x6b)
 511                                         smtc_seqw(i + 0x30,
 512                                                   vgamode[j].init_sr30_sr75[i]);
 513
 514                         /* init SEQ register SR80 - SR93 */
 515                         for (i = 0; i < SIZE_SR80_SR93; i++)
 516                                 smtc_seqw(i + 0x80,
 517                                           vgamode[j].init_sr80_sr93[i]);
 518
 519                         /* init SEQ register SRA0 - SRAF */
 520                         for (i = 0; i < SIZE_SRA0_SRAF; i++)
 521                                 smtc_seqw(i + 0xa0,
 522                                           vgamode[j].init_sra0_sraf[i]);
 523
 524                         /* init Graphic register GR00 - GR08 */
 525                         for (i = 0; i < SIZE_GR00_GR08; i++)
 526                                 smtc_grphw(i, vgamode[j].init_gr00_gr08[i]);
 527
 528                         /* init Attribute register AR00 - AR14 */
 529                         for (i = 0; i < SIZE_AR00_AR14; i++)
 530                                 smtc_attrw(i, vgamode[j].init_ar00_ar14[i]);
 531
 532                         /* init CRTC register CR00 - CR18 */
 533                         for (i = 0; i < SIZE_CR00_CR18; i++)
 534                                 smtc_crtcw(i, vgamode[j].init_cr00_cr18[i]);
 535
 536                         /* init CRTC register CR30 - CR4D */
 537                         for (i = 0; i < SIZE_CR30_CR4D; i++)
 538                                 smtc_crtcw(i + 0x30,
 539                                            vgamode[j].init_cr30_cr4d[i]);
 540
 541                         /* init CRTC register CR90 - CRA7 */
 542                         for (i = 0; i < SIZE_CR90_CRA7; i++)
 543                                 smtc_crtcw(i + 0x90,
 544                                            vgamode[j].init_cr90_cra7[i]);
 545                 }
 546         }
 547         smtc_mmiowb(0x67, 0x3c2);
 548
 549         /* set VPR registers */
 550         writel(0x0, sfb->vp_regs + 0x0C);
 551         writel(0x0, sfb->vp_regs + 0x40);
 552
 553         /* set data width */
 554         m_nscreenstride =
 555                 (sfb->width * sfb->fb.var.bits_per_pixel) / 64;
 556         switch (sfb->fb.var.bits_per_pixel) {
 557         case 8:
 558                 writel(0x0, sfb->vp_regs + 0x0);
 559                 break;
 560         case 16:
 561                 writel(0x00020000, sfb->vp_regs + 0x0);
 562                 break;
 563         case 24:
 564                 writel(0x00040000, sfb->vp_regs + 0x0);
 565                 break;
 566         case 32:
 567                 writel(0x00030000, sfb->vp_regs + 0x0);
 568                 break;
 569         }
 570         writel((u32) (((m_nscreenstride + 2) << 16) | m_nscreenstride),
 571                sfb->vp_regs + 0x10);
 572 }
 573
 574 static void smtc_set_timing(struct smtcfb_info *sfb)
 575 {
 576         switch (sfb->chip_id) {
 577         case 0x710:
 578         case 0x712:
 579         case 0x720:
 580                 sm7xx_set_timing(sfb);
 581                 break;
 582         }
 583 }
 584
 585 static void smtcfb_setmode(struct smtcfb_info *sfb)
 586 {
 587         switch (sfb->fb.var.bits_per_pixel) {
 588         case 32:
 589                 sfb->fb.fix.visual       = FB_VISUAL_TRUECOLOR;
 590                 sfb->fb.fix.line_length  = sfb->fb.var.xres * 4;
 591                 sfb->fb.var.red.length   = 8;
 592                 sfb->fb.var.green.length = 8;
 593                 sfb->fb.var.blue.length  = 8;
 594                 sfb->fb.var.red.offset   = 16;
 595                 sfb->fb.var.green.offset = 8;
 596                 sfb->fb.var.blue.offset  = 0;
 597                 break;
 598         case 24:
 599                 sfb->fb.fix.visual       = FB_VISUAL_TRUECOLOR;
 600                 sfb->fb.fix.line_length  = sfb->fb.var.xres * 3;
 601                 sfb->fb.var.red.length   = 8;
 602                 sfb->fb.var.green.length = 8;
 603                 sfb->fb.var.blue.length  = 8;
 604                 sfb->fb.var.red.offset   = 16;
 605                 sfb->fb.var.green.offset = 8;
 606                 sfb->fb.var.blue.offset  = 0;
 607                 break;
 608         case 8:
 609                 sfb->fb.fix.visual       = FB_VISUAL_PSEUDOCOLOR;
 610                 sfb->fb.fix.line_length  = sfb->fb.var.xres;
 611                 sfb->fb.var.red.length   = 3;
 612                 sfb->fb.var.green.length = 3;
 613                 sfb->fb.var.blue.length  = 2;
 614                 sfb->fb.var.red.offset   = 5;
 615                 sfb->fb.var.green.offset = 2;
 616                 sfb->fb.var.blue.offset  = 0;
 617                 break;
 618         case 16:
 619         default:
 620                 sfb->fb.fix.visual       = FB_VISUAL_TRUECOLOR;
 621                 sfb->fb.fix.line_length  = sfb->fb.var.xres * 2;
 622                 sfb->fb.var.red.length   = 5;
 623                 sfb->fb.var.green.length = 6;
 624                 sfb->fb.var.blue.length  = 5;
 625                 sfb->fb.var.red.offset   = 11;
 626                 sfb->fb.var.green.offset = 5;
 627                 sfb->fb.var.blue.offset  = 0;
 628                 break;
 629         }
 630
 631         sfb->width  = sfb->fb.var.xres;
 632         sfb->height = sfb->fb.var.yres;
 633         sfb->hz = 60;
 634         smtc_set_timing(sfb);
 635 }
 636
 637 static int smtc_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
 638 {
 639         /* sanity checks */
 640         if (var->xres_virtual < var->xres)
 641                 var->xres_virtual = var->xres;
 642
 643         if (var->yres_virtual < var->yres)
 644                 var->yres_virtual = var->yres;
 645
 646         /* set valid default bpp */
 647         if ((var->bits_per_pixel != 8)  && (var->bits_per_pixel != 16) &&
 648             (var->bits_per_pixel != 24) && (var->bits_per_pixel != 32))
 649                 var->bits_per_pixel = 16;
 650
 651         return 0;
 652 }
 653
 654 static int smtc_set_par(struct fb_info *info)
 655 {
 656         smtcfb_setmode(info->par);
 657
 658         return 0;
 659 }
 660
 661 static struct fb_ops smtcfb_ops = {
 662         .owner        = THIS_MODULE,
 663         .fb_check_var = smtc_check_var,
 664         .fb_set_par   = smtc_set_par,
 665         .fb_setcolreg = smtc_setcolreg,
 666         .fb_blank     = smtc_blank,
 667         .fb_fillrect  = cfb_fillrect,
 668         .fb_imageblit = cfb_imageblit,
 669         .fb_copyarea  = cfb_copyarea,
 670 #ifdef __BIG_ENDIAN
 671         .fb_read      = smtcfb_read,
 672         .fb_write     = smtcfb_write,
 673 #endif
 674 };
 675
 676 /*
 677  * alloc struct smtcfb_info and assign default values
 678  */
 679 static struct smtcfb_info *smtc_alloc_fb_info(struct pci_dev *pdev)
 680 {
 681         struct smtcfb_info *sfb;
 682
 683         sfb = kzalloc(sizeof(*sfb), GFP_KERNEL);
 684
 685         if (!sfb)
 686                 return NULL;
 687
 688         sfb->pdev = pdev;
 689
 690         sfb->fb.flags          = FBINFO_FLAG_DEFAULT;
 691         sfb->fb.fbops          = &smtcfb_ops;
 692         sfb->fb.fix            = smtcfb_fix;
 693         sfb->fb.var            = smtcfb_var;
 694         sfb->fb.pseudo_palette = sfb->colreg;
 695         sfb->fb.par            = sfb;
 696
 697         return sfb;
 698 }
 699
 700 /*
 701  * free struct smtcfb_info
 702  */
 703 static void smtc_free_fb_info(struct smtcfb_info *sfb)
 704 {
 705         kfree(sfb);
 706 }
 707
 708 /*
 709  * Unmap in the memory mapped IO registers
 710  */
 711
 712 static void smtc_unmap_mmio(struct smtcfb_info *sfb)
 713 {
 714         if (sfb && smtc_regbaseaddress)
 715                 smtc_regbaseaddress = NULL;
 716 }
 717
 718 /*
 719  * Map in the screen memory
 720  */
 721
 722 static int smtc_map_smem(struct smtcfb_info *sfb,
 723                          struct pci_dev *pdev, u_long smem_len)
 724 {
 725         sfb->fb.fix.smem_start = pci_resource_start(pdev, 0);
 726
 727 #ifdef __BIG_ENDIAN
 728         if (sfb->fb.var.bits_per_pixel == 32)
 729                 sfb->fb.fix.smem_start += 0x800000;
 730 #endif
 731
 732         sfb->fb.fix.smem_len = smem_len;
 733
 734         sfb->fb.screen_base = sfb->lfb;
 735
 736         if (!sfb->fb.screen_base) {
 737                 dev_err(&pdev->dev,
 738                         "%s: unable to map screen memory\n", sfb->fb.fix.id);
 739                 return -ENOMEM;
 740         }
 741
 742         return 0;
 743 }
 744
 745 /*
 746  * Unmap in the screen memory
 747  *
 748  */
 749 static void smtc_unmap_smem(struct smtcfb_info *sfb)
 750 {
 751         if (sfb && sfb->fb.screen_base) {
 752                 iounmap(sfb->fb.screen_base);
 753                 sfb->fb.screen_base = NULL;
 754         }
 755 }
 756
 757 /*
 758  * We need to wake up the device and make sure its in linear memory mode.
 759  */
 760 static inline void sm7xx_init_hw(void)
 761 {
 762         outb_p(0x18, 0x3c4);
 763         outb_p(0x11, 0x3c5);
 764 }
 765
 766 static int smtcfb_pci_probe(struct pci_dev *pdev,
 767                             const struct pci_device_id *ent)
 768 {
 769         struct smtcfb_info *sfb;
 770         u_long smem_size = 0x00800000;  /* default 8MB */
 771         int err;
 772         unsigned long mmio_base;
 773
 774         dev_info(&pdev->dev, "Silicon Motion display driver.");
 775
 776         err = pci_enable_device(pdev);  /* enable SMTC chip */
 777         if (err)
 778                 return err;
 779
 780         sprintf(smtcfb_fix.id, "sm%Xfb", ent->device);
 781
 782         sfb = smtc_alloc_fb_info(pdev);
 783
 784         if (!sfb) {
 785                 err = -ENOMEM;
 786                 goto failed_free;
 787         }
 788
 789         sfb->chip_id = ent->device;
 790
 791         pci_set_drvdata(pdev, sfb);
 792
 793         sm7xx_init_hw();
 794
 795         /* get mode parameter from smtc_scr_info */
 796         if (smtc_scr_info.lfb_width != 0) {
 797                 sfb->fb.var.xres = smtc_scr_info.lfb_width;
 798                 sfb->fb.var.yres = smtc_scr_info.lfb_height;
 799                 sfb->fb.var.bits_per_pixel = smtc_scr_info.lfb_depth;
 800         } else {
 801                 /* default resolution 1024x600 16bit mode */
 802                 sfb->fb.var.xres = SCREEN_X_RES;
 803                 sfb->fb.var.yres = SCREEN_Y_RES;
 804                 sfb->fb.var.bits_per_pixel = SCREEN_BPP;
 805         }
 806
 807 #ifdef __BIG_ENDIAN
 808         if (sfb->fb.var.bits_per_pixel == 24)
 809                 sfb->fb.var.bits_per_pixel = (smtc_scr_info.lfb_depth = 32);
 810 #endif
 811         /* Map address and memory detection */
 812         mmio_base = pci_resource_start(pdev, 0);
 813         pci_read_config_byte(pdev, PCI_REVISION_ID, &sfb->chip_rev_id);
 814
 815         switch (sfb->chip_id) {
 816         case 0x710:
 817         case 0x712:
 818                 sfb->fb.fix.mmio_start = mmio_base + 0x00400000;
 819                 sfb->fb.fix.mmio_len = 0x00400000;
 820                 smem_size = SM712_VIDEOMEMORYSIZE;
 821 #ifdef __BIG_ENDIAN
 822                 sfb->lfb = ioremap(mmio_base, 0x00c00000);
 823 #else
 824                 sfb->lfb = ioremap(mmio_base, 0x00800000);
 825 #endif
 826                 sfb->mmio = (smtc_regbaseaddress =
 827                     sfb->lfb + 0x00700000);
 828                 sfb->dp_regs = sfb->lfb + 0x00408000;
 829                 sfb->vp_regs = sfb->lfb + 0x0040c000;
 830 #ifdef __BIG_ENDIAN
 831                 if (sfb->fb.var.bits_per_pixel == 32) {
 832                         sfb->lfb += 0x800000;
 833                         dev_info(&pdev->dev, "sfb->lfb=%p", sfb->lfb);
 834                 }
 835 #endif
 836                 if (!smtc_regbaseaddress) {
 837                         dev_err(&pdev->dev,
 838                                 "%s: unable to map memory mapped IO!",
 839                                 sfb->fb.fix.id);
 840                         err = -ENOMEM;
 841                         goto failed_fb;
 842                 }
 843
 844                 /* set MCLK = 14.31818 * (0x16 / 0x2) */
 845                 smtc_seqw(0x6a, 0x16);
 846                 smtc_seqw(0x6b, 0x02);
 847                 smtc_seqw(0x62, 0x3e);
 848                 /* enable PCI burst */
 849                 smtc_seqw(0x17, 0x20);
 850                 /* enable word swap */
 851 #ifdef __BIG_ENDIAN
 852                 if (sfb->fb.var.bits_per_pixel == 32)
 853                         smtc_seqw(0x17, 0x30);
 854 #endif
 855                 break;
 856         case 0x720:
 857                 sfb->fb.fix.mmio_start = mmio_base;
 858                 sfb->fb.fix.mmio_len = 0x00200000;
 859                 smem_size = SM722_VIDEOMEMORYSIZE;
 860                 sfb->dp_regs = ioremap(mmio_base, 0x00a00000);
 861                 sfb->lfb = sfb->dp_regs + 0x00200000;
 862                 sfb->mmio = (smtc_regbaseaddress =
 863                     sfb->dp_regs + 0x000c0000);
 864                 sfb->vp_regs = sfb->dp_regs + 0x800;
 865
 866                 smtc_seqw(0x62, 0xff);
 867                 smtc_seqw(0x6a, 0x0d);
 868                 smtc_seqw(0x6b, 0x02);
 869                 break;
 870         default:
 871                 dev_err(&pdev->dev,
 872                         "No valid Silicon Motion display chip was detected!");
 873
 874                 goto failed_fb;
 875         }
 876
 877         /* can support 32 bpp */
 878         if (15 == sfb->fb.var.bits_per_pixel)
 879                 sfb->fb.var.bits_per_pixel = 16;
 880
 881         sfb->fb.var.xres_virtual = sfb->fb.var.xres;
 882         sfb->fb.var.yres_virtual = sfb->fb.var.yres;
 883         err = smtc_map_smem(sfb, pdev, smem_size);
 884         if (err)
 885                 goto failed;
 886
 887         smtcfb_setmode(sfb);
 888
 889         err = register_framebuffer(&sfb->fb);
 890         if (err < 0)
 891                 goto failed;
 892
 893         dev_info(&pdev->dev,
 894                  "Silicon Motion SM%X Rev%X primary display mode %dx%d-%d Init Complete.",
 895                  sfb->chip_id, sfb->chip_rev_id, sfb->fb.var.xres,
 896                  sfb->fb.var.yres, sfb->fb.var.bits_per_pixel);
 897
 898         return 0;
 899
 900 failed:
 901         dev_err(&pdev->dev, "Silicon Motion, Inc. primary display init fail.");
 902
 903         smtc_unmap_smem(sfb);
 904         smtc_unmap_mmio(sfb);
 905 failed_fb:
 906         smtc_free_fb_info(sfb);
 907
 908 failed_free:
 909         pci_disable_device(pdev);
 910
 911         return err;
 912 }
 913
 914 /*
 915  * 0x710 (LynxEM)
 916  * 0x712 (LynxEM+)
 917  * 0x720 (Lynx3DM, Lynx3DM+)
 918  */
 919 static const struct pci_device_id smtcfb_pci_table[] = {
 920         { PCI_DEVICE(0x126f, 0x710), },
 921         { PCI_DEVICE(0x126f, 0x712), },
 922         { PCI_DEVICE(0x126f, 0x720), },
 923         {0,}
 924 };
 925
 926 static void smtcfb_pci_remove(struct pci_dev *pdev)
 927 {
 928         struct smtcfb_info *sfb;
 929
 930         sfb = pci_get_drvdata(pdev);
 931         smtc_unmap_smem(sfb);
 932         smtc_unmap_mmio(sfb);
 933         unregister_framebuffer(&sfb->fb);
 934         smtc_free_fb_info(sfb);
 935 }
 936
 937 #ifdef CONFIG_PM
 938 static int smtcfb_pci_suspend(struct device *device)
 939 {
 940         struct pci_dev *pdev = to_pci_dev(device);
 941         struct smtcfb_info *sfb;
 942
 943         sfb = pci_get_drvdata(pdev);
 944
 945         /* set the hw in sleep mode use external clock and self memory refresh
 946          * so that we can turn off internal PLLs later on
 947          */
 948         smtc_seqw(0x20, (smtc_seqr(0x20) | 0xc0));
 949         smtc_seqw(0x69, (smtc_seqr(0x69) & 0xf7));
 950
 951         console_lock();
 952         fb_set_suspend(&sfb->fb, 1);
 953         console_unlock();
 954
 955         /* additionally turn off all function blocks including internal PLLs */
 956         smtc_seqw(0x21, 0xff);
 957
 958         return 0;
 959 }
 960
 961 static int smtcfb_pci_resume(struct device *device)
 962 {
 963         struct pci_dev *pdev = to_pci_dev(device);
 964         struct smtcfb_info *sfb;
 965
 966         sfb = pci_get_drvdata(pdev);
 967
 968         /* reinit hardware */
 969         sm7xx_init_hw();
 970         switch (sfb->chip_id) {
 971         case 0x710:
 972         case 0x712:
 973                 /* set MCLK = 14.31818 *  (0x16 / 0x2) */
 974                 smtc_seqw(0x6a, 0x16);
 975                 smtc_seqw(0x6b, 0x02);
 976                 smtc_seqw(0x62, 0x3e);
 977                 /* enable PCI burst */
 978                 smtc_seqw(0x17, 0x20);
 979 #ifdef __BIG_ENDIAN
 980                 if (sfb->fb.var.bits_per_pixel == 32)
 981                         smtc_seqw(0x17, 0x30);
 982 #endif
 983                 break;
 984         case 0x720:
 985                 smtc_seqw(0x62, 0xff);
 986                 smtc_seqw(0x6a, 0x0d);
 987                 smtc_seqw(0x6b, 0x02);
 988                 break;
 989         }
 990
 991         smtc_seqw(0x34, (smtc_seqr(0x34) | 0xc0));
 992         smtc_seqw(0x33, ((smtc_seqr(0x33) | 0x08) & 0xfb));
 993
 994         smtcfb_setmode(sfb);
 995
 996         console_lock();
 997         fb_set_suspend(&sfb->fb, 0);
 998         console_unlock();
 999
1000         return 0;
1001 }
1002
1003 static SIMPLE_DEV_PM_OPS(sm7xx_pm_ops, smtcfb_pci_suspend, smtcfb_pci_resume);
1004 #define SM7XX_PM_OPS (&sm7xx_pm_ops)
1005
1006 #else  /* !CONFIG_PM */
1007
1008 #define SM7XX_PM_OPS NULL
1009
1010 #endif /* !CONFIG_PM */
1011
1012 static struct pci_driver smtcfb_driver = {
1013         .name = "smtcfb",
1014         .id_table = smtcfb_pci_table,
1015         .probe = smtcfb_pci_probe,
1016         .remove = smtcfb_pci_remove,
1017         .driver.pm  = SM7XX_PM_OPS,
1018 };
1019
1020 module_pci_driver(smtcfb_driver);
1021
1022 MODULE_AUTHOR("Siliconmotion ");
1023 MODULE_DESCRIPTION("Framebuffer driver for SMI Graphic Cards");
1024 MODULE_LICENSE("GPL");