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 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                                 val = chan_to_field(red, &sfb->fb.var.red);
 263                                 val |= chan_to_field(green, &sfb->fb.var.green);
 264                                 val |= chan_to_field(blue, &sfb->fb.var.blue);
 265 #ifdef __BIG_ENDIAN
 266                                 pal[regno] =
 267                                     ((red & 0xf800) >> 8) |
 268                                     ((green & 0xe000) >> 13) |
 269                                     ((green & 0x1c00) << 3) |
 270                                     ((blue & 0xf800) >> 3);
 271 #else
 272                                 pal[regno] = val;
 273 #endif
 274                         } else {
 275                                 u32 *pal = sfb->fb.pseudo_palette;
 276                                 val = chan_to_field(red, &sfb->fb.var.red);
 277                                 val |= chan_to_field(green, &sfb->fb.var.green);
 278                                 val |= chan_to_field(blue, &sfb->fb.var.blue);
 279 #ifdef __BIG_ENDIAN
 280                                 val =
 281                                     (val & 0xff00ff00 >> 8) |
 282                                     (val & 0x00ff00ff << 8);
 283 #endif
 284                                 pal[regno] = val;
 285                         }
 286                 }
 287                 break;
 288
 289         case FB_VISUAL_PSEUDOCOLOR:
 290                 /* color depth 8 bit */
 291                 sm712_setpalette(regno, red, green, blue, info);
 292                 break;
 293
 294         default:
 295                 return 1;       /* unknown type */
 296         }
 297
 298         return 0;
 299
 300 }
 301
 302 #ifdef __BIG_ENDIAN
 303 static ssize_t smtcfb_read(struct fb_info *info, char __user *buf, size_t
 304                                 count, loff_t *ppos)
 305 {
 306         unsigned long p = *ppos;
 307
 308         u32 *buffer, *dst;
 309         u32 __iomem *src;
 310         int c, i, cnt = 0, err = 0;
 311         unsigned long total_size;
 312
 313         if (!info || !info->screen_base)
 314                 return -ENODEV;
 315
 316         if (info->state != FBINFO_STATE_RUNNING)
 317                 return -EPERM;
 318
 319         total_size = info->screen_size;
 320
 321         if (total_size == 0)
 322                 total_size = info->fix.smem_len;
 323
 324         if (p >= total_size)
 325                 return 0;
 326
 327         if (count >= total_size)
 328                 count = total_size;
 329
 330         if (count + p > total_size)
 331                 count = total_size - p;
 332
 333         buffer = kmalloc((count > PAGE_SIZE) ? PAGE_SIZE : count, GFP_KERNEL);
 334         if (!buffer)
 335                 return -ENOMEM;
 336
 337         src = (u32 __iomem *) (info->screen_base + p);
 338
 339         if (info->fbops->fb_sync)
 340                 info->fbops->fb_sync(info);
 341
 342         while (count) {
 343                 c = (count > PAGE_SIZE) ? PAGE_SIZE : count;
 344                 dst = buffer;
 345                 for (i = c >> 2; i--;) {
 346                         *dst = fb_readl(src++);
 347                         *dst =
 348                             (*dst & 0xff00ff00 >> 8) |
 349                             (*dst & 0x00ff00ff << 8);
 350                         dst++;
 351                 }
 352                 if (c & 3) {
 353                         u8 *dst8 = (u8 *) dst;
 354                         u8 __iomem *src8 = (u8 __iomem *) src;
 355
 356                         for (i = c & 3; i--;) {
 357                                 if (i & 1) {
 358                                         *dst8++ = fb_readb(++src8);
 359                                 } else {
 360                                         *dst8++ = fb_readb(--src8);
 361                                         src8 += 2;
 362                                 }
 363                         }
 364                         src = (u32 __iomem *) src8;
 365                 }
 366
 367                 if (copy_to_user(buf, buffer, c)) {
 368                         err = -EFAULT;
 369                         break;
 370                 }
 371                 *ppos += c;
 372                 buf += c;
 373                 cnt += c;
 374                 count -= c;
 375         }
 376
 377         kfree(buffer);
 378
 379         return (err) ? err : cnt;
 380 }
 381
 382 static ssize_t
 383 smtcfb_write(struct fb_info *info, const char __user *buf, size_t count,
 384              loff_t *ppos)
 385 {
 386         unsigned long p = *ppos;
 387
 388         u32 *buffer, *src;
 389         u32 __iomem *dst;
 390         int c, i, cnt = 0, err = 0;
 391         unsigned long total_size;
 392
 393         if (!info || !info->screen_base)
 394                 return -ENODEV;
 395
 396         if (info->state != FBINFO_STATE_RUNNING)
 397                 return -EPERM;
 398
 399         total_size = info->screen_size;
 400
 401         if (total_size == 0)
 402                 total_size = info->fix.smem_len;
 403
 404         if (p > total_size)
 405                 return -EFBIG;
 406
 407         if (count > total_size) {
 408                 err = -EFBIG;
 409                 count = total_size;
 410         }
 411
 412         if (count + p > total_size) {
 413                 if (!err)
 414                         err = -ENOSPC;
 415
 416                 count = total_size - p;
 417         }
 418
 419         buffer = kmalloc((count > PAGE_SIZE) ? PAGE_SIZE : count, GFP_KERNEL);
 420         if (!buffer)
 421                 return -ENOMEM;
 422
 423         dst = (u32 __iomem *) (info->screen_base + p);
 424
 425         if (info->fbops->fb_sync)
 426                 info->fbops->fb_sync(info);
 427
 428         while (count) {
 429                 c = (count > PAGE_SIZE) ? PAGE_SIZE : count;
 430                 src = buffer;
 431
 432                 if (copy_from_user(src, buf, c)) {
 433                         err = -EFAULT;
 434                         break;
 435                 }
 436
 437                 for (i = c >> 2; i--;) {
 438                         fb_writel((*src & 0xff00ff00 >> 8) |
 439                                   (*src & 0x00ff00ff << 8), dst++);
 440                         src++;
 441                 }
 442                 if (c & 3) {
 443                         u8 *src8 = (u8 *) src;
 444                         u8 __iomem *dst8 = (u8 __iomem *) dst;
 445
 446                         for (i = c & 3; i--;) {
 447                                 if (i & 1) {
 448                                         fb_writeb(*src8++, ++dst8);
 449                                 } else {
 450                                         fb_writeb(*src8++, --dst8);
 451                                         dst8 += 2;
 452                                 }
 453                         }
 454                         dst = (u32 __iomem *) dst8;
 455                 }
 456
 457                 *ppos += c;
 458                 buf += c;
 459                 cnt += c;
 460                 count -= c;
 461         }
 462
 463         kfree(buffer);
 464
 465         return (cnt) ? cnt : err;
 466 }
 467 #endif  /* ! __BIG_ENDIAN */
 468
 469 static void sm7xx_set_timing(struct smtcfb_info *sfb)
 470 {
 471         int i = 0, j = 0;
 472         u32 m_nScreenStride;
 473
 474         dev_dbg(&sfb->pdev->dev,
 475                 "sfb->width=%d sfb->height=%d "
 476                 "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
 485                         dev_dbg(&sfb->pdev->dev,
 486                                 "VGAMode[j].mmSizeX=%d VGAMode[j].mmSizeY=%d "
 487                                 "VGAMode[j].bpp=%d VGAMode[j].hz=%d\n",
 488                                 VGAMode[j].mmSizeX, VGAMode[j].mmSizeY,
 489                                 VGAMode[j].bpp, VGAMode[j].hz);
 490
 491                         dev_dbg(&sfb->pdev->dev, "VGAMode index=%d\n", j);
 492
 493                         smtc_mmiowb(0x0, 0x3c6);
 494
 495                         smtc_seqw(0, 0x1);
 496
 497                         smtc_mmiowb(VGAMode[j].Init_MISC, 0x3c2);
 498
 499                         /* init SEQ register SR00 - SR04 */
 500                         for (i = 0; i < SIZE_SR00_SR04; i++)
 501                                 smtc_seqw(i, VGAMode[j].Init_SR00_SR04[i]);
 502
 503                         /* init SEQ register SR10 - SR24 */
 504                         for (i = 0; i < SIZE_SR10_SR24; i++)
 505                                 smtc_seqw(i + 0x10,
 506                                           VGAMode[j].Init_SR10_SR24[i]);
 507
 508                         /* init SEQ register SR30 - SR75 */
 509                         for (i = 0; i < SIZE_SR30_SR75; i++)
 510                                 if ((i + 0x30) != 0x62 &&
 511                                     (i + 0x30) != 0x6a &&
 512                                     (i + 0x30) != 0x6b)
 513                                         smtc_seqw(i + 0x30,
 514                                                 VGAMode[j].Init_SR30_SR75[i]);
 515
 516                         /* init SEQ register SR80 - SR93 */
 517                         for (i = 0; i < SIZE_SR80_SR93; i++)
 518                                 smtc_seqw(i + 0x80,
 519                                           VGAMode[j].Init_SR80_SR93[i]);
 520
 521                         /* init SEQ register SRA0 - SRAF */
 522                         for (i = 0; i < SIZE_SRA0_SRAF; i++)
 523                                 smtc_seqw(i + 0xa0,
 524                                           VGAMode[j].Init_SRA0_SRAF[i]);
 525
 526                         /* init Graphic register GR00 - GR08 */
 527                         for (i = 0; i < SIZE_GR00_GR08; i++)
 528                                 smtc_grphw(i, VGAMode[j].Init_GR00_GR08[i]);
 529
 530                         /* init Attribute register AR00 - AR14 */
 531                         for (i = 0; i < SIZE_AR00_AR14; i++)
 532                                 smtc_attrw(i, VGAMode[j].Init_AR00_AR14[i]);
 533
 534                         /* init CRTC register CR00 - CR18 */
 535                         for (i = 0; i < SIZE_CR00_CR18; i++)
 536                                 smtc_crtcw(i, VGAMode[j].Init_CR00_CR18[i]);
 537
 538                         /* init CRTC register CR30 - CR4D */
 539                         for (i = 0; i < SIZE_CR30_CR4D; i++)
 540                                 smtc_crtcw(i + 0x30,
 541                                            VGAMode[j].Init_CR30_CR4D[i]);
 542
 543                         /* init CRTC register CR90 - CRA7 */
 544                         for (i = 0; i < SIZE_CR90_CRA7; i++)
 545                                 smtc_crtcw(i + 0x90,
 546                                            VGAMode[j].Init_CR90_CRA7[i]);
 547                 }
 548         }
 549         smtc_mmiowb(0x67, 0x3c2);
 550
 551         /* set VPR registers */
 552         writel(0x0, sfb->vp_regs + 0x0C);
 553         writel(0x0, sfb->vp_regs + 0x40);
 554
 555         /* set data width */
 556         m_nScreenStride =
 557                 (sfb->width * sfb->fb.var.bits_per_pixel) / 64;
 558         switch (sfb->fb.var.bits_per_pixel) {
 559         case 8:
 560                 writel(0x0, sfb->vp_regs + 0x0);
 561                 break;
 562         case 16:
 563                 writel(0x00020000, sfb->vp_regs + 0x0);
 564                 break;
 565         case 24:
 566                 writel(0x00040000, sfb->vp_regs + 0x0);
 567                 break;
 568         case 32:
 569                 writel(0x00030000, sfb->vp_regs + 0x0);
 570                 break;
 571         }
 572         writel((u32) (((m_nScreenStride + 2) << 16) | m_nScreenStride),
 573                sfb->vp_regs + 0x10);
 574
 575 }
 576
 577 static void smtc_set_timing(struct smtcfb_info *sfb)
 578 {
 579         switch (sfb->chip_id) {
 580         case 0x710:
 581         case 0x712:
 582         case 0x720:
 583                 sm7xx_set_timing(sfb);
 584                 break;
 585         }
 586 }
 587
 588 static void smtcfb_setmode(struct smtcfb_info *sfb)
 589 {
 590         switch (sfb->fb.var.bits_per_pixel) {
 591         case 32:
 592                 sfb->fb.fix.visual       = FB_VISUAL_TRUECOLOR;
 593                 sfb->fb.fix.line_length  = sfb->fb.var.xres * 4;
 594                 sfb->fb.var.red.length   = 8;
 595                 sfb->fb.var.green.length = 8;
 596                 sfb->fb.var.blue.length  = 8;
 597                 sfb->fb.var.red.offset   = 16;
 598                 sfb->fb.var.green.offset = 8;
 599                 sfb->fb.var.blue.offset  = 0;
 600                 break;
 601         case 24:
 602                 sfb->fb.fix.visual       = FB_VISUAL_TRUECOLOR;
 603                 sfb->fb.fix.line_length  = sfb->fb.var.xres * 3;
 604                 sfb->fb.var.red.length   = 8;
 605                 sfb->fb.var.green.length = 8;
 606                 sfb->fb.var.blue.length  = 8;
 607                 sfb->fb.var.red.offset   = 16;
 608                 sfb->fb.var.green.offset = 8;
 609                 sfb->fb.var.blue.offset  = 0;
 610                 break;
 611         case 8:
 612                 sfb->fb.fix.visual       = FB_VISUAL_PSEUDOCOLOR;
 613                 sfb->fb.fix.line_length  = sfb->fb.var.xres;
 614                 sfb->fb.var.red.length   = 3;
 615                 sfb->fb.var.green.length = 3;
 616                 sfb->fb.var.blue.length  = 2;
 617                 sfb->fb.var.red.offset   = 5;
 618                 sfb->fb.var.green.offset = 2;
 619                 sfb->fb.var.blue.offset  = 0;
 620                 break;
 621         case 16:
 622         default:
 623                 sfb->fb.fix.visual       = FB_VISUAL_TRUECOLOR;
 624                 sfb->fb.fix.line_length  = sfb->fb.var.xres * 2;
 625                 sfb->fb.var.red.length   = 5;
 626                 sfb->fb.var.green.length = 6;
 627                 sfb->fb.var.blue.length  = 5;
 628                 sfb->fb.var.red.offset   = 11;
 629                 sfb->fb.var.green.offset = 5;
 630                 sfb->fb.var.blue.offset  = 0;
 631                 break;
 632         }
 633
 634         sfb->width  = sfb->fb.var.xres;
 635         sfb->height = sfb->fb.var.yres;
 636         sfb->hz = 60;
 637         smtc_set_timing(sfb);
 638 }
 639
 640 static int smtc_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
 641 {
 642         /* sanity checks */
 643         if (var->xres_virtual < var->xres)
 644                 var->xres_virtual = var->xres;
 645
 646         if (var->yres_virtual < var->yres)
 647                 var->yres_virtual = var->yres;
 648
 649         /* set valid default bpp */
 650         if ((var->bits_per_pixel != 8)  && (var->bits_per_pixel != 16) &&
 651             (var->bits_per_pixel != 24) && (var->bits_per_pixel != 32))
 652                 var->bits_per_pixel = 16;
 653
 654         return 0;
 655 }
 656
 657 static int smtc_set_par(struct fb_info *info)
 658 {
 659         smtcfb_setmode(info->par);
 660
 661         return 0;
 662 }
 663
 664 static struct fb_ops smtcfb_ops = {
 665         .owner        = THIS_MODULE,
 666         .fb_check_var = smtc_check_var,
 667         .fb_set_par   = smtc_set_par,
 668         .fb_setcolreg = smtc_setcolreg,
 669         .fb_blank     = smtc_blank,
 670         .fb_fillrect  = cfb_fillrect,
 671         .fb_imageblit = cfb_imageblit,
 672         .fb_copyarea  = cfb_copyarea,
 673 #ifdef __BIG_ENDIAN
 674         .fb_read      = smtcfb_read,
 675         .fb_write     = smtcfb_write,
 676 #endif
 677 };
 678
 679 /*
 680  * alloc struct smtcfb_info and assign default values
 681  */
 682 static struct smtcfb_info *smtc_alloc_fb_info(struct pci_dev *pdev)
 683 {
 684         struct smtcfb_info *sfb;
 685
 686         sfb = kzalloc(sizeof(*sfb), GFP_KERNEL);
 687
 688         if (!sfb)
 689                 return NULL;
 690
 691         sfb->pdev = pdev;
 692
 693         sfb->fb.flags          = FBINFO_FLAG_DEFAULT;
 694         sfb->fb.fbops          = &smtcfb_ops;
 695         sfb->fb.fix            = smtcfb_fix;
 696         sfb->fb.var            = smtcfb_var;
 697         sfb->fb.pseudo_palette = sfb->colreg;
 698         sfb->fb.par            = sfb;
 699
 700         return sfb;
 701 }
 702
 703 /*
 704  * free struct smtcfb_info
 705  */
 706 static void smtc_free_fb_info(struct smtcfb_info *sfb)
 707 {
 708         kfree(sfb);
 709 }
 710
 711 /*
 712  * Unmap in the memory mapped IO registers
 713  */
 714
 715 static void smtc_unmap_mmio(struct smtcfb_info *sfb)
 716 {
 717         if (sfb && smtc_RegBaseAddress)
 718                 smtc_RegBaseAddress = NULL;
 719 }
 720
 721 /*
 722  * Map in the screen memory
 723  */
 724
 725 static int smtc_map_smem(struct smtcfb_info *sfb,
 726                 struct pci_dev *pdev, u_long smem_len)
 727 {
 728
 729         sfb->fb.fix.smem_start = pci_resource_start(pdev, 0);
 730
 731 #ifdef __BIG_ENDIAN
 732         if (sfb->fb.var.bits_per_pixel == 32)
 733                 sfb->fb.fix.smem_start += 0x800000;
 734 #endif
 735
 736         sfb->fb.fix.smem_len = smem_len;
 737
 738         sfb->fb.screen_base = sfb->lfb;
 739
 740         if (!sfb->fb.screen_base) {
 741                 dev_err(&pdev->dev,
 742                         "%s: unable to map screen memory\n", sfb->fb.fix.id);
 743                 return -ENOMEM;
 744         }
 745
 746         return 0;
 747 }
 748
 749 /*
 750  * Unmap in the screen memory
 751  *
 752  */
 753 static void smtc_unmap_smem(struct smtcfb_info *sfb)
 754 {
 755         if (sfb && sfb->fb.screen_base) {
 756                 iounmap(sfb->fb.screen_base);
 757                 sfb->fb.screen_base = NULL;
 758         }
 759 }
 760
 761 /*
 762  * We need to wake up the device and make sure its in linear memory mode.
 763  */
 764 static inline void sm7xx_init_hw(void)
 765 {
 766         outb_p(0x18, 0x3c4);
 767         outb_p(0x11, 0x3c5);
 768 }
 769
 770 static int smtcfb_pci_probe(struct pci_dev *pdev,
 771                                    const struct pci_device_id *ent)
 772 {
 773         struct smtcfb_info *sfb;
 774         u_long smem_size = 0x00800000;  /* default 8MB */
 775         int err;
 776         unsigned long mmio_base;
 777
 778         dev_info(&pdev->dev, "Silicon Motion display driver.");
 779
 780         err = pci_enable_device(pdev);  /* enable SMTC chip */
 781         if (err)
 782                 return err;
 783
 784         sprintf(smtcfb_fix.id, "sm%Xfb", ent->device);
 785
 786         sfb = smtc_alloc_fb_info(pdev);
 787
 788         if (!sfb) {
 789                 err = -ENOMEM;
 790                 goto failed_free;
 791         }
 792
 793         sfb->chip_id = ent->device;
 794
 795         pci_set_drvdata(pdev, sfb);
 796
 797         sm7xx_init_hw();
 798
 799         /* get mode parameter from smtc_scr_info */
 800         if (smtc_scr_info.lfb_width != 0) {
 801                 sfb->fb.var.xres = smtc_scr_info.lfb_width;
 802                 sfb->fb.var.yres = smtc_scr_info.lfb_height;
 803                 sfb->fb.var.bits_per_pixel = smtc_scr_info.lfb_depth;
 804         } else {
 805                 /* default resolution 1024x600 16bit mode */
 806                 sfb->fb.var.xres = SCREEN_X_RES;
 807                 sfb->fb.var.yres = SCREEN_Y_RES;
 808                 sfb->fb.var.bits_per_pixel = SCREEN_BPP;
 809         }
 810
 811 #ifdef __BIG_ENDIAN
 812         if (sfb->fb.var.bits_per_pixel == 24)
 813                 sfb->fb.var.bits_per_pixel = (smtc_scr_info.lfb_depth = 32);
 814 #endif
 815         /* Map address and memory detection */
 816         mmio_base = pci_resource_start(pdev, 0);
 817         pci_read_config_byte(pdev, PCI_REVISION_ID, &sfb->chip_rev_id);
 818
 819         switch (sfb->chip_id) {
 820         case 0x710:
 821         case 0x712:
 822                 sfb->fb.fix.mmio_start = mmio_base + 0x00400000;
 823                 sfb->fb.fix.mmio_len = 0x00400000;
 824                 smem_size = SM712_VIDEOMEMORYSIZE;
 825 #ifdef __BIG_ENDIAN
 826                 sfb->lfb = ioremap(mmio_base, 0x00c00000);
 827 #else
 828                 sfb->lfb = ioremap(mmio_base, 0x00800000);
 829 #endif
 830                 sfb->mmio = (smtc_RegBaseAddress =
 831                     sfb->lfb + 0x00700000);
 832                 sfb->dp_regs = sfb->lfb + 0x00408000;
 833                 sfb->vp_regs = sfb->lfb + 0x0040c000;
 834 #ifdef __BIG_ENDIAN
 835                 if (sfb->fb.var.bits_per_pixel == 32) {
 836                         sfb->lfb += 0x800000;
 837                         dev_info(&pdev->dev, "sfb->lfb=%p", sfb->lfb);
 838                 }
 839 #endif
 840                 if (!smtc_RegBaseAddress) {
 841                         dev_err(&pdev->dev,
 842                                 "%s: unable to map memory mapped IO!",
 843                                 sfb->fb.fix.id);
 844                         err = -ENOMEM;
 845                         goto failed_fb;
 846                 }
 847
 848                 /* set MCLK = 14.31818 * (0x16 / 0x2) */
 849                 smtc_seqw(0x6a, 0x16);
 850                 smtc_seqw(0x6b, 0x02);
 851                 smtc_seqw(0x62, 0x3e);
 852                 /* enable PCI burst */
 853                 smtc_seqw(0x17, 0x20);
 854                 /* enable word swap */
 855 #ifdef __BIG_ENDIAN
 856                 if (sfb->fb.var.bits_per_pixel == 32)
 857                         smtc_seqw(0x17, 0x30);
 858 #endif
 859                 break;
 860         case 0x720:
 861                 sfb->fb.fix.mmio_start = mmio_base;
 862                 sfb->fb.fix.mmio_len = 0x00200000;
 863                 smem_size = SM722_VIDEOMEMORYSIZE;
 864                 sfb->dp_regs = ioremap(mmio_base, 0x00a00000);
 865                 sfb->lfb = sfb->dp_regs + 0x00200000;
 866                 sfb->mmio = (smtc_RegBaseAddress =
 867                     sfb->dp_regs + 0x000c0000);
 868                 sfb->vp_regs = sfb->dp_regs + 0x800;
 869
 870                 smtc_seqw(0x62, 0xff);
 871                 smtc_seqw(0x6a, 0x0d);
 872                 smtc_seqw(0x6b, 0x02);
 873                 break;
 874         default:
 875                 dev_err(&pdev->dev,
 876                         "No valid Silicon Motion display chip was detected!");
 877
 878                 goto failed_fb;
 879         }
 880
 881         /* can support 32 bpp */
 882         if (15 == sfb->fb.var.bits_per_pixel)
 883                 sfb->fb.var.bits_per_pixel = 16;
 884
 885         sfb->fb.var.xres_virtual = sfb->fb.var.xres;
 886         sfb->fb.var.yres_virtual = sfb->fb.var.yres;
 887         err = smtc_map_smem(sfb, pdev, smem_size);
 888         if (err)
 889                 goto failed;
 890
 891         smtcfb_setmode(sfb);
 892
 893         err = register_framebuffer(&sfb->fb);
 894         if (err < 0)
 895                 goto failed;
 896
 897         dev_info(&pdev->dev,
 898                  "Silicon Motion SM%X Rev%X primary display mode %dx%d-%d Init Complete.",
 899                  sfb->chip_id, sfb->chip_rev_id, sfb->fb.var.xres,
 900                  sfb->fb.var.yres, sfb->fb.var.bits_per_pixel);
 901
 902         return 0;
 903
 904 failed:
 905         dev_err(&pdev->dev, "Silicon Motion, Inc. primary display init fail.");
 906
 907         smtc_unmap_smem(sfb);
 908         smtc_unmap_mmio(sfb);
 909 failed_fb:
 910         smtc_free_fb_info(sfb);
 911
 912 failed_free:
 913         pci_disable_device(pdev);
 914
 915         return err;
 916 }
 917
 918 /*
 919  * 0x710 (LynxEM)
 920  * 0x712 (LynxEM+)
 921  * 0x720 (Lynx3DM, Lynx3DM+)
 922  */
 923 static const struct pci_device_id smtcfb_pci_table[] = {
 924         { PCI_DEVICE(0x126f, 0x710), },
 925         { PCI_DEVICE(0x126f, 0x712), },
 926         { PCI_DEVICE(0x126f, 0x720), },
 927         {0,}
 928 };
 929
 930 static void smtcfb_pci_remove(struct pci_dev *pdev)
 931 {
 932         struct smtcfb_info *sfb;
 933
 934         sfb = pci_get_drvdata(pdev);
 935         smtc_unmap_smem(sfb);
 936         smtc_unmap_mmio(sfb);
 937         unregister_framebuffer(&sfb->fb);
 938         smtc_free_fb_info(sfb);
 939 }
 940
 941 #ifdef CONFIG_PM
 942 static int smtcfb_pci_suspend(struct device *device)
 943 {
 944         struct pci_dev *pdev = to_pci_dev(device);
 945         struct smtcfb_info *sfb;
 946
 947         sfb = pci_get_drvdata(pdev);
 948
 949         /* set the hw in sleep mode use external clock and self memory refresh
 950          * so that we can turn off internal PLLs later on
 951          */
 952         smtc_seqw(0x20, (smtc_seqr(0x20) | 0xc0));
 953         smtc_seqw(0x69, (smtc_seqr(0x69) & 0xf7));
 954
 955         console_lock();
 956         fb_set_suspend(&sfb->fb, 1);
 957         console_unlock();
 958
 959         /* additionally turn off all function blocks including internal PLLs */
 960         smtc_seqw(0x21, 0xff);
 961
 962         return 0;
 963 }
 964
 965 static int smtcfb_pci_resume(struct device *device)
 966 {
 967         struct pci_dev *pdev = to_pci_dev(device);
 968         struct smtcfb_info *sfb;
 969
 970         sfb = pci_get_drvdata(pdev);
 971
 972         /* reinit hardware */
 973         sm7xx_init_hw();
 974         switch (sfb->chip_id) {
 975         case 0x710:
 976         case 0x712:
 977                 /* set MCLK = 14.31818 *  (0x16 / 0x2) */
 978                 smtc_seqw(0x6a, 0x16);
 979                 smtc_seqw(0x6b, 0x02);
 980                 smtc_seqw(0x62, 0x3e);
 981                 /* enable PCI burst */
 982                 smtc_seqw(0x17, 0x20);
 983 #ifdef __BIG_ENDIAN
 984                 if (sfb->fb.var.bits_per_pixel == 32)
 985                         smtc_seqw(0x17, 0x30);
 986 #endif
 987                 break;
 988         case 0x720:
 989                 smtc_seqw(0x62, 0xff);
 990                 smtc_seqw(0x6a, 0x0d);
 991                 smtc_seqw(0x6b, 0x02);
 992                 break;
 993         }
 994
 995         smtc_seqw(0x34, (smtc_seqr(0x34) | 0xc0));
 996         smtc_seqw(0x33, ((smtc_seqr(0x33) | 0x08) & 0xfb));
 997
 998         smtcfb_setmode(sfb);
 999
1000         console_lock();
1001         fb_set_suspend(&sfb->fb, 0);
1002         console_unlock();
1003
1004         return 0;
1005 }
1006
1007 static SIMPLE_DEV_PM_OPS(sm7xx_pm_ops, smtcfb_pci_suspend, smtcfb_pci_resume);
1008 #define SM7XX_PM_OPS (&sm7xx_pm_ops)
1009
1010 #else  /* !CONFIG_PM */
1011
1012 #define SM7XX_PM_OPS NULL
1013
1014 #endif /* !CONFIG_PM */
1015
1016 static struct pci_driver smtcfb_driver = {
1017         .name = "smtcfb",
1018         .id_table = smtcfb_pci_table,
1019         .probe = smtcfb_pci_probe,
1020         .remove = smtcfb_pci_remove,
1021         .driver.pm  = SM7XX_PM_OPS,
1022 };
1023
1024 module_pci_driver(smtcfb_driver);
1025
1026 MODULE_AUTHOR("Siliconmotion ");
1027 MODULE_DESCRIPTION("Framebuffer driver for SMI Graphic Cards");
1028 MODULE_LICENSE("GPL");