Pileus Git - ~andy/linux/blob - 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 = vesa_mode_table[i].lfb_height;
 134                         smtc_scr_info.lfb_depth  = vesa_mode_table[i].lfb_depth;
 135                         return 0;
 136                 }
 137         }
 138
 139         return -1;
 140 }
 141 __setup("vga=", sm7xx_vga_setup);
 142
 143 static void sm712_setpalette(int regno, unsigned red, unsigned green,
 144                              unsigned blue, struct fb_info *info)
 145 {
 146         /* set bit 5:4 = 01 (write LCD RAM only) */
 147         smtc_seqw(0x66, (smtc_seqr(0x66) & 0xC3) | 0x10);
 148
 149         smtc_mmiowb(regno, dac_reg);
 150         smtc_mmiowb(red >> 10, dac_val);
 151         smtc_mmiowb(green >> 10, dac_val);
 152         smtc_mmiowb(blue >> 10, dac_val);
 153 }
 154
 155 /* chan_to_field
 156  *
 157  * convert a colour value into a field position
 158  *
 159  * from pxafb.c
 160  */
 161
 162 static inline unsigned int chan_to_field(unsigned int chan,
 163                                          struct fb_bitfield *bf)
 164 {
 165         chan &= 0xffff;
 166         chan >>= 16 - bf->length;
 167         return chan << bf->offset;
 168 }
 169
 170 static int smtc_blank(int blank_mode, struct fb_info *info)
 171 {
 172         /* clear DPMS setting */
 173         switch (blank_mode) {
 174         case FB_BLANK_UNBLANK:
 175                 /* Screen On: HSync: On, VSync : On */
 176                 smtc_seqw(0x01, (smtc_seqr(0x01) & (~0x20)));
 177                 smtc_seqw(0x6a, 0x16);
 178                 smtc_seqw(0x6b, 0x02);
 179                 smtc_seqw(0x21, (smtc_seqr(0x21) & 0x77));
 180                 smtc_seqw(0x22, (smtc_seqr(0x22) & (~0x30)));
 181                 smtc_seqw(0x23, (smtc_seqr(0x23) & (~0xc0)));
 182                 smtc_seqw(0x24, (smtc_seqr(0x24) | 0x01));
 183                 smtc_seqw(0x31, (smtc_seqr(0x31) | 0x03));
 184                 break;
 185         case FB_BLANK_NORMAL:
 186                 /* Screen Off: HSync: On, VSync : On   Soft blank */
 187                 smtc_seqw(0x01, (smtc_seqr(0x01) & (~0x20)));
 188                 smtc_seqw(0x6a, 0x16);
 189                 smtc_seqw(0x6b, 0x02);
 190                 smtc_seqw(0x22, (smtc_seqr(0x22) & (~0x30)));
 191                 smtc_seqw(0x23, (smtc_seqr(0x23) & (~0xc0)));
 192                 smtc_seqw(0x24, (smtc_seqr(0x24) | 0x01));
 193                 smtc_seqw(0x31, ((smtc_seqr(0x31) & (~0x07)) | 0x00));
 194                 break;
 195         case FB_BLANK_VSYNC_SUSPEND:
 196                 /* Screen On: HSync: On, VSync : Off */
 197                 smtc_seqw(0x01, (smtc_seqr(0x01) | 0x20));
 198                 smtc_seqw(0x20, (smtc_seqr(0x20) & (~0xB0)));
 199                 smtc_seqw(0x6a, 0x0c);
 200                 smtc_seqw(0x6b, 0x02);
 201                 smtc_seqw(0x21, (smtc_seqr(0x21) | 0x88));
 202                 smtc_seqw(0x22, ((smtc_seqr(0x22) & (~0x30)) | 0x20));
 203                 smtc_seqw(0x23, ((smtc_seqr(0x23) & (~0xc0)) | 0x20));
 204                 smtc_seqw(0x24, (smtc_seqr(0x24) & (~0x01)));
 205                 smtc_seqw(0x31, ((smtc_seqr(0x31) & (~0x07)) | 0x00));
 206                 smtc_seqw(0x34, (smtc_seqr(0x34) | 0x80));
 207                 break;
 208         case FB_BLANK_HSYNC_SUSPEND:
 209                 /* Screen On: HSync: Off, VSync : On */
 210                 smtc_seqw(0x01, (smtc_seqr(0x01) | 0x20));
 211                 smtc_seqw(0x20, (smtc_seqr(0x20) & (~0xB0)));
 212                 smtc_seqw(0x6a, 0x0c);
 213                 smtc_seqw(0x6b, 0x02);
 214                 smtc_seqw(0x21, (smtc_seqr(0x21) | 0x88));
 215                 smtc_seqw(0x22, ((smtc_seqr(0x22) & (~0x30)) | 0x10));
 216                 smtc_seqw(0x23, ((smtc_seqr(0x23) & (~0xc0)) | 0xD8));
 217                 smtc_seqw(0x24, (smtc_seqr(0x24) & (~0x01)));
 218                 smtc_seqw(0x31, ((smtc_seqr(0x31) & (~0x07)) | 0x00));
 219                 smtc_seqw(0x34, (smtc_seqr(0x34) | 0x80));
 220                 break;
 221         case FB_BLANK_POWERDOWN:
 222                 /* Screen On: HSync: Off, VSync : Off */
 223                 smtc_seqw(0x01, (smtc_seqr(0x01) | 0x20));
 224                 smtc_seqw(0x20, (smtc_seqr(0x20) & (~0xB0)));
 225                 smtc_seqw(0x6a, 0x0c);
 226                 smtc_seqw(0x6b, 0x02);
 227                 smtc_seqw(0x21, (smtc_seqr(0x21) | 0x88));
 228                 smtc_seqw(0x22, ((smtc_seqr(0x22) & (~0x30)) | 0x30));
 229                 smtc_seqw(0x23, ((smtc_seqr(0x23) & (~0xc0)) | 0xD8));
 230                 smtc_seqw(0x24, (smtc_seqr(0x24) & (~0x01)));
 231                 smtc_seqw(0x31, ((smtc_seqr(0x31) & (~0x07)) | 0x00));
 232                 smtc_seqw(0x34, (smtc_seqr(0x34) | 0x80));
 233                 break;
 234         default:
 235                 return -EINVAL;
 236         }
 237
 238         return 0;
 239 }
 240
 241 static int smtc_setcolreg(unsigned regno, unsigned red, unsigned green,
 242                           unsigned blue, unsigned trans, struct fb_info *info)
 243 {
 244         struct smtcfb_info *sfb;
 245         u32 val;
 246
 247         sfb = info->par;
 248
 249         if (regno > 255)
 250                 return 1;
 251
 252         switch (sfb->fb.fix.visual) {
 253         case FB_VISUAL_DIRECTCOLOR:
 254         case FB_VISUAL_TRUECOLOR:
 255                 /*
 256                  * 16/32 bit true-colour, use pseudo-palette for 16 base color
 257                  */
 258                 if (regno < 16) {
 259                         if (sfb->fb.var.bits_per_pixel == 16) {
 260                                 u32 *pal = sfb->fb.pseudo_palette;
 261                                 val = chan_to_field(red, &sfb->fb.var.red);
 262                                 val |= chan_to_field(green, &sfb->fb.var.green);
 263                                 val |= chan_to_field(blue, &sfb->fb.var.blue);
 264 #ifdef __BIG_ENDIAN
 265                                 pal[regno] =
 266                                     ((red & 0xf800) >> 8) |
 267                                     ((green & 0xe000) >> 13) |
 268                                     ((green & 0x1c00) << 3) |
 269                                     ((blue & 0xf800) >> 3);
 270 #else
 271                                 pal[regno] = val;
 272 #endif
 273                         } else {
 274                                 u32 *pal = sfb->fb.pseudo_palette;
 275                                 val = chan_to_field(red, &sfb->fb.var.red);
 276                                 val |= chan_to_field(green, &sfb->fb.var.green);
 277                                 val |= chan_to_field(blue, &sfb->fb.var.blue);
 278 #ifdef __BIG_ENDIAN
 279                                 val =
 280                                     (val & 0xff00ff00 >> 8) |
 281                                     (val & 0x00ff00ff << 8);
 282 #endif
 283                                 pal[regno] = val;
 284                         }
 285                 }
 286                 break;
 287
 288         case FB_VISUAL_PSEUDOCOLOR:
 289                 /* color depth 8 bit */
 290                 sm712_setpalette(regno, red, green, blue, info);
 291                 break;
 292
 293         default:
 294                 return 1;       /* unknown type */
 295         }
 296
 297         return 0;
 298
 299 }
 300
 301 #ifdef __BIG_ENDIAN
 302 static ssize_t smtcfb_read(struct fb_info *info, char __user *buf, size_t
 303                                 count, loff_t *ppos)
 304 {
 305         unsigned long p = *ppos;
 306
 307         u32 *buffer, *dst;
 308         u32 __iomem *src;
 309         int c, i, cnt = 0, err = 0;
 310         unsigned long total_size;
 311
 312         if (!info || !info->screen_base)
 313                 return -ENODEV;
 314
 315         if (info->state != FBINFO_STATE_RUNNING)
 316                 return -EPERM;
 317
 318         total_size = info->screen_size;
 319
 320         if (total_size == 0)
 321                 total_size = info->fix.smem_len;
 322
 323         if (p >= total_size)
 324                 return 0;
 325
 326         if (count >= total_size)
 327                 count = total_size;
 328
 329         if (count + p > total_size)
 330                 count = total_size - p;
 331
 332         buffer = kmalloc((count > PAGE_SIZE) ? PAGE_SIZE : count, GFP_KERNEL);
 333         if (!buffer)
 334                 return -ENOMEM;
 335
 336         src = (u32 __iomem *) (info->screen_base + p);
 337
 338         if (info->fbops->fb_sync)
 339                 info->fbops->fb_sync(info);
 340
 341         while (count) {
 342                 c = (count > PAGE_SIZE) ? PAGE_SIZE : count;
 343                 dst = buffer;
 344                 for (i = c >> 2; i--;) {
 345                         *dst = fb_readl(src++);
 346                         *dst =
 347                             (*dst & 0xff00ff00 >> 8) |
 348                             (*dst & 0x00ff00ff << 8);
 349                         dst++;
 350                 }
 351                 if (c & 3) {
 352                         u8 *dst8 = (u8 *) dst;
 353                         u8 __iomem *src8 = (u8 __iomem *) src;
 354
 355                         for (i = c & 3; i--;) {
 356                                 if (i & 1) {
 357                                         *dst8++ = fb_readb(++src8);
 358                                 } else {
 359                                         *dst8++ = fb_readb(--src8);
 360                                         src8 += 2;
 361                                 }
 362                         }
 363                         src = (u32 __iomem *) src8;
 364                 }
 365
 366                 if (copy_to_user(buf, buffer, c)) {
 367                         err = -EFAULT;
 368                         break;
 369                 }
 370                 *ppos += c;
 371                 buf += c;
 372                 cnt += c;
 373                 count -= c;
 374         }
 375
 376         kfree(buffer);
 377
 378         return (err) ? err : cnt;
 379 }
 380
 381 static ssize_t
 382 smtcfb_write(struct fb_info *info, const char __user *buf, size_t count,
 383              loff_t *ppos)
 384 {
 385         unsigned long p = *ppos;
 386
 387         u32 *buffer, *src;
 388         u32 __iomem *dst;
 389         int c, i, cnt = 0, err = 0;
 390         unsigned long total_size;
 391
 392         if (!info || !info->screen_base)
 393                 return -ENODEV;
 394
 395         if (info->state != FBINFO_STATE_RUNNING)
 396                 return -EPERM;
 397
 398         total_size = info->screen_size;
 399
 400         if (total_size == 0)
 401                 total_size = info->fix.smem_len;
 402
 403         if (p > total_size)
 404                 return -EFBIG;
 405
 406         if (count > total_size) {
 407                 err = -EFBIG;
 408                 count = total_size;
 409         }
 410
 411         if (count + p > total_size) {
 412                 if (!err)
 413                         err = -ENOSPC;
 414
 415                 count = total_size - p;
 416         }
 417
 418         buffer = kmalloc((count > PAGE_SIZE) ? PAGE_SIZE : count, GFP_KERNEL);
 419         if (!buffer)
 420                 return -ENOMEM;
 421
 422         dst = (u32 __iomem *) (info->screen_base + p);
 423
 424         if (info->fbops->fb_sync)
 425                 info->fbops->fb_sync(info);
 426
 427         while (count) {
 428                 c = (count > PAGE_SIZE) ? PAGE_SIZE : count;
 429                 src = buffer;
 430
 431                 if (copy_from_user(src, buf, c)) {
 432                         err = -EFAULT;
 433                         break;
 434                 }
 435
 436                 for (i = c >> 2; i--;) {
 437                         fb_writel((*src & 0xff00ff00 >> 8) |
 438                                   (*src & 0x00ff00ff << 8), dst++);
 439                         src++;
 440                 }
 441                 if (c & 3) {
 442                         u8 *src8 = (u8 *) src;
 443                         u8 __iomem *dst8 = (u8 __iomem *) dst;
 444
 445                         for (i = c & 3; i--;) {
 446                                 if (i & 1) {
 447                                         fb_writeb(*src8++, ++dst8);
 448                                 } else {
 449                                         fb_writeb(*src8++, --dst8);
 450                                         dst8 += 2;
 451                                 }
 452                         }
 453                         dst = (u32 __iomem *) dst8;
 454                 }
 455
 456                 *ppos += c;
 457                 buf += c;
 458                 cnt += c;
 459                 count -= c;
 460         }
 461
 462         kfree(buffer);
 463
 464         return (cnt) ? cnt : err;
 465 }
 466 #endif  /* ! __BIG_ENDIAN */
 467
 468 static void sm7xx_set_timing(struct smtcfb_info *sfb)
 469 {
 470         int i = 0, j = 0;
 471         u32 m_nScreenStride;
 472
 473         dev_dbg(&sfb->pdev->dev,
 474                 "sfb->width=%d sfb->height=%d "
 475                 "sfb->fb.var.bits_per_pixel=%d sfb->hz=%d\n",
 476                 sfb->width, sfb->height, sfb->fb.var.bits_per_pixel, sfb->hz);
 477
 478         for (j = 0; j < numVGAModes; j++) {
 479                 if (VGAMode[j].mmSizeX == sfb->width &&
 480                     VGAMode[j].mmSizeY == sfb->height &&
 481                     VGAMode[j].bpp == sfb->fb.var.bits_per_pixel &&
 482                     VGAMode[j].hz == sfb->hz) {
 483
 484                         dev_dbg(&sfb->pdev->dev,
 485                                 "VGAMode[j].mmSizeX=%d VGAMode[j].mmSizeY=%d "
 486                                 "VGAMode[j].bpp=%d VGAMode[j].hz=%d\n",
 487                                 VGAMode[j].mmSizeX, VGAMode[j].mmSizeY,
 488                                 VGAMode[j].bpp, VGAMode[j].hz);
 489
 490                         dev_dbg(&sfb->pdev->dev, "VGAMode index=%d\n", j);
 491
 492                         smtc_mmiowb(0x0, 0x3c6);
 493
 494                         smtc_seqw(0, 0x1);
 495
 496                         smtc_mmiowb(VGAMode[j].Init_MISC, 0x3c2);
 497
 498                         /* init SEQ register SR00 - SR04 */
 499                         for (i = 0; i < SIZE_SR00_SR04; i++)
 500                                 smtc_seqw(i, VGAMode[j].Init_SR00_SR04[i]);
 501
 502                         /* init SEQ register SR10 - SR24 */
 503                         for (i = 0; i < SIZE_SR10_SR24; i++)
 504                                 smtc_seqw(i + 0x10,
 505                                           VGAMode[j].Init_SR10_SR24[i]);
 506
 507                         /* init SEQ register SR30 - SR75 */
 508                         for (i = 0; i < SIZE_SR30_SR75; i++)
 509                                 if ((i + 0x30) != 0x62 &&
 510                                     (i + 0x30) != 0x6a &&
 511                                     (i + 0x30) != 0x6b)
 512                                         smtc_seqw(i + 0x30,
 513                                                 VGAMode[j].Init_SR30_SR75[i]);
 514
 515                         /* init SEQ register SR80 - SR93 */
 516                         for (i = 0; i < SIZE_SR80_SR93; i++)
 517                                 smtc_seqw(i + 0x80,
 518                                           VGAMode[j].Init_SR80_SR93[i]);
 519
 520                         /* init SEQ register SRA0 - SRAF */
 521                         for (i = 0; i < SIZE_SRA0_SRAF; i++)
 522                                 smtc_seqw(i + 0xa0,
 523                                           VGAMode[j].Init_SRA0_SRAF[i]);
 524
 525                         /* init Graphic register GR00 - GR08 */
 526                         for (i = 0; i < SIZE_GR00_GR08; i++)
 527                                 smtc_grphw(i, VGAMode[j].Init_GR00_GR08[i]);
 528
 529                         /* init Attribute register AR00 - AR14 */
 530                         for (i = 0; i < SIZE_AR00_AR14; i++)
 531                                 smtc_attrw(i, VGAMode[j].Init_AR00_AR14[i]);
 532
 533                         /* init CRTC register CR00 - CR18 */
 534                         for (i = 0; i < SIZE_CR00_CR18; i++)
 535                                 smtc_crtcw(i, VGAMode[j].Init_CR00_CR18[i]);
 536
 537                         /* init CRTC register CR30 - CR4D */
 538                         for (i = 0; i < SIZE_CR30_CR4D; i++)
 539                                 smtc_crtcw(i + 0x30,
 540                                            VGAMode[j].Init_CR30_CR4D[i]);
 541
 542                         /* init CRTC register CR90 - CRA7 */
 543                         for (i = 0; i < SIZE_CR90_CRA7; i++)
 544                                 smtc_crtcw(i + 0x90,
 545                                            VGAMode[j].Init_CR90_CRA7[i]);
 546                 }
 547         }
 548         smtc_mmiowb(0x67, 0x3c2);
 549
 550         /* set VPR registers */
 551         writel(0x0, sfb->vp_regs + 0x0C);
 552         writel(0x0, sfb->vp_regs + 0x40);
 553
 554         /* set data width */
 555         m_nScreenStride =
 556                 (sfb->width * sfb->fb.var.bits_per_pixel) / 64;
 557         switch (sfb->fb.var.bits_per_pixel) {
 558         case 8:
 559                 writel(0x0, sfb->vp_regs + 0x0);
 560                 break;
 561         case 16:
 562                 writel(0x00020000, sfb->vp_regs + 0x0);
 563                 break;
 564         case 24:
 565                 writel(0x00040000, sfb->vp_regs + 0x0);
 566                 break;
 567         case 32:
 568                 writel(0x00030000, sfb->vp_regs + 0x0);
 569                 break;
 570         }
 571         writel((u32) (((m_nScreenStride + 2) << 16) | m_nScreenStride),
 572                sfb->vp_regs + 0x10);
 573
 574 }
 575
 576 static void smtc_set_timing(struct smtcfb_info *sfb)
 577 {
 578         switch (sfb->chip_id) {
 579         case 0x710:
 580         case 0x712:
 581         case 0x720:
 582                 sm7xx_set_timing(sfb);
 583                 break;
 584         }
 585 }
 586
 587 void smtcfb_setmode(struct smtcfb_info *sfb)
 588 {
 589         switch (sfb->fb.var.bits_per_pixel) {
 590         case 32:
 591                 sfb->fb.fix.visual       = FB_VISUAL_TRUECOLOR;
 592                 sfb->fb.fix.line_length  = sfb->fb.var.xres * 4;
 593                 sfb->fb.var.red.length   = 8;
 594                 sfb->fb.var.green.length = 8;
 595                 sfb->fb.var.blue.length  = 8;
 596                 sfb->fb.var.red.offset   = 16;
 597                 sfb->fb.var.green.offset = 8;
 598                 sfb->fb.var.blue.offset  = 0;
 599                 break;
 600         case 24:
 601                 sfb->fb.fix.visual       = FB_VISUAL_TRUECOLOR;
 602                 sfb->fb.fix.line_length  = sfb->fb.var.xres * 3;
 603                 sfb->fb.var.red.length   = 8;
 604                 sfb->fb.var.green.length = 8;
 605                 sfb->fb.var.blue.length  = 8;
 606                 sfb->fb.var.red.offset   = 16;
 607                 sfb->fb.var.green.offset = 8;
 608                 sfb->fb.var.blue.offset  = 0;
 609                 break;
 610         case 8:
 611                 sfb->fb.fix.visual       = FB_VISUAL_PSEUDOCOLOR;
 612                 sfb->fb.fix.line_length  = sfb->fb.var.xres;
 613                 sfb->fb.var.red.length   = 3;
 614                 sfb->fb.var.green.length = 3;
 615                 sfb->fb.var.blue.length  = 2;
 616                 sfb->fb.var.red.offset   = 5;
 617                 sfb->fb.var.green.offset = 2;
 618                 sfb->fb.var.blue.offset  = 0;
 619                 break;
 620         case 16:
 621         default:
 622                 sfb->fb.fix.visual       = FB_VISUAL_TRUECOLOR;
 623                 sfb->fb.fix.line_length  = sfb->fb.var.xres * 2;
 624                 sfb->fb.var.red.length   = 5;
 625                 sfb->fb.var.green.length = 6;
 626                 sfb->fb.var.blue.length  = 5;
 627                 sfb->fb.var.red.offset   = 11;
 628                 sfb->fb.var.green.offset = 5;
 629                 sfb->fb.var.blue.offset  = 0;
 630                 break;
 631         }
 632
 633         sfb->width  = sfb->fb.var.xres;
 634         sfb->height = sfb->fb.var.yres;
 635         sfb->hz = 60;
 636         smtc_set_timing(sfb);
 637 }
 638
 639 static int smtc_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
 640 {
 641         /* sanity checks */
 642         if (var->xres_virtual < var->xres)
 643                 var->xres_virtual = var->xres;
 644
 645         if (var->yres_virtual < var->yres)
 646                 var->yres_virtual = var->yres;
 647
 648         /* set valid default bpp */
 649         if ((var->bits_per_pixel != 8)  && (var->bits_per_pixel != 16) &&
 650             (var->bits_per_pixel != 24) && (var->bits_per_pixel != 32))
 651                 var->bits_per_pixel = 16;
 652
 653         return 0;
 654 }
 655
 656 static int smtc_set_par(struct fb_info *info)
 657 {
 658         smtcfb_setmode(info->par);
 659
 660         return 0;
 661 }
 662
 663 static struct fb_ops smtcfb_ops = {
 664         .owner        = THIS_MODULE,
 665         .fb_check_var = smtc_check_var,
 666         .fb_set_par   = smtc_set_par,
 667         .fb_setcolreg = smtc_setcolreg,
 668         .fb_blank     = smtc_blank,
 669         .fb_fillrect  = cfb_fillrect,
 670         .fb_imageblit = cfb_imageblit,
 671         .fb_copyarea  = cfb_copyarea,
 672 #ifdef __BIG_ENDIAN
 673         .fb_read      = smtcfb_read,
 674         .fb_write     = smtcfb_write,
 675 #endif
 676 };
 677
 678 /*
 679  * alloc struct smtcfb_info and assign default values
 680  */
 681 static struct smtcfb_info *smtc_alloc_fb_info(struct pci_dev *pdev)
 682 {
 683         struct smtcfb_info *sfb;
 684
 685         sfb = kzalloc(sizeof(*sfb), GFP_KERNEL);
 686
 687         if (!sfb)
 688                 return NULL;
 689
 690         sfb->pdev = pdev;
 691
 692         sfb->fb.flags          = FBINFO_FLAG_DEFAULT;
 693         sfb->fb.fbops          = &smtcfb_ops;
 694         sfb->fb.fix            = smtcfb_fix;
 695         sfb->fb.var            = smtcfb_var;
 696         sfb->fb.pseudo_palette = sfb->colreg;
 697         sfb->fb.par            = sfb;
 698
 699         return sfb;
 700 }
 701
 702 /*
 703  * free struct smtcfb_info
 704  */
 705 static void smtc_free_fb_info(struct smtcfb_info *sfb)
 706 {
 707         kfree(sfb);
 708 }
 709
 710 /*
 711  * Unmap in the memory mapped IO registers
 712  */
 713
 714 static void smtc_unmap_mmio(struct smtcfb_info *sfb)
 715 {
 716         if (sfb && smtc_RegBaseAddress)
 717                 smtc_RegBaseAddress = NULL;
 718 }
 719
 720 /*
 721  * Map in the screen memory
 722  */
 723
 724 static int smtc_map_smem(struct smtcfb_info *sfb,
 725                 struct pci_dev *pdev, u_long smem_len)
 726 {
 727
 728         sfb->fb.fix.smem_start = pci_resource_start(pdev, 0);
 729
 730 #ifdef __BIG_ENDIAN
 731         if (sfb->fb.var.bits_per_pixel == 32)
 732                 sfb->fb.fix.smem_start += 0x800000;
 733 #endif
 734
 735         sfb->fb.fix.smem_len = smem_len;
 736
 737         sfb->fb.screen_base = sfb->lfb;
 738
 739         if (!sfb->fb.screen_base) {
 740                 dev_err(&pdev->dev,
 741                         "%s: unable to map screen memory\n", sfb->fb.fix.id);
 742                 return -ENOMEM;
 743         }
 744
 745         return 0;
 746 }
 747
 748 /*
 749  * Unmap in the screen memory
 750  *
 751  */
 752 static void smtc_unmap_smem(struct smtcfb_info *sfb)
 753 {
 754         if (sfb && sfb->fb.screen_base) {
 755                 iounmap(sfb->fb.screen_base);
 756                 sfb->fb.screen_base = NULL;
 757         }
 758 }
 759
 760 /*
 761  * We need to wake up the device and make sure its in linear memory mode.
 762  */
 763 static inline void sm7xx_init_hw(void)
 764 {
 765         outb_p(0x18, 0x3c4);
 766         outb_p(0x11, 0x3c5);
 767 }
 768
 769 static int smtcfb_pci_probe(struct pci_dev *pdev,
 770                                    const struct pci_device_id *ent)
 771 {
 772         struct smtcfb_info *sfb;
 773         u_long smem_size = 0x00800000;  /* default 8MB */
 774         int err;
 775         unsigned long mmio_base;
 776
 777         dev_info(&pdev->dev, "Silicon Motion display driver.");
 778
 779         err = pci_enable_device(pdev);  /* enable SMTC chip */
 780         if (err)
 781                 return err;
 782
 783         sprintf(smtcfb_fix.id, "sm%Xfb", ent->device);
 784
 785         sfb = smtc_alloc_fb_info(pdev);
 786
 787         if (!sfb) {
 788                 err = -ENOMEM;
 789                 goto failed_free;
 790         }
 791
 792         sfb->chip_id = ent->device;
 793
 794         pci_set_drvdata(pdev, sfb);
 795
 796         sm7xx_init_hw();
 797
 798         /* get mode parameter from smtc_scr_info */
 799         if (smtc_scr_info.lfb_width != 0) {
 800                 sfb->fb.var.xres = smtc_scr_info.lfb_width;
 801                 sfb->fb.var.yres = smtc_scr_info.lfb_height;
 802                 sfb->fb.var.bits_per_pixel = smtc_scr_info.lfb_depth;
 803         } else {
 804                 /* default resolution 1024x600 16bit mode */
 805                 sfb->fb.var.xres = SCREEN_X_RES;
 806                 sfb->fb.var.yres = SCREEN_Y_RES;
 807                 sfb->fb.var.bits_per_pixel = SCREEN_BPP;
 808         }
 809
 810 #ifdef __BIG_ENDIAN
 811         if (sfb->fb.var.bits_per_pixel == 24)
 812                 sfb->fb.var.bits_per_pixel = (smtc_scr_info.lfb_depth = 32);
 813 #endif
 814         /* Map address and memory detection */
 815         mmio_base = pci_resource_start(pdev, 0);
 816         pci_read_config_byte(pdev, PCI_REVISION_ID, &sfb->chip_rev_id);
 817
 818         switch (sfb->chip_id) {
 819         case 0x710:
 820         case 0x712:
 821                 sfb->fb.fix.mmio_start = mmio_base + 0x00400000;
 822                 sfb->fb.fix.mmio_len = 0x00400000;
 823                 smem_size = SM712_VIDEOMEMORYSIZE;
 824 #ifdef __BIG_ENDIAN
 825                 sfb->lfb = ioremap(mmio_base, 0x00c00000);
 826 #else
 827                 sfb->lfb = ioremap(mmio_base, 0x00800000);
 828 #endif
 829                 sfb->mmio = (smtc_RegBaseAddress =
 830                     sfb->lfb + 0x00700000);
 831                 sfb->dp_regs = sfb->lfb + 0x00408000;
 832                 sfb->vp_regs = sfb->lfb + 0x0040c000;
 833 #ifdef __BIG_ENDIAN
 834                 if (sfb->fb.var.bits_per_pixel == 32) {
 835                         sfb->lfb += 0x800000;
 836                         dev_info(&pdev->dev, "sfb->lfb=%p", sfb->lfb);
 837                 }
 838 #endif
 839                 if (!smtc_RegBaseAddress) {
 840                         dev_err(&pdev->dev,
 841                                 "%s: unable to map memory mapped IO!",
 842                                 sfb->fb.fix.id);
 843                         err = -ENOMEM;
 844                         goto failed_fb;
 845                 }
 846
 847                 /* set MCLK = 14.31818 * (0x16 / 0x2) */
 848                 smtc_seqw(0x6a, 0x16);
 849                 smtc_seqw(0x6b, 0x02);
 850                 smtc_seqw(0x62, 0x3e);
 851                 /* enable PCI burst */
 852                 smtc_seqw(0x17, 0x20);
 853                 /* enable word swap */
 854 #ifdef __BIG_ENDIAN
 855                 if (sfb->fb.var.bits_per_pixel == 32)
 856                         smtc_seqw(0x17, 0x30);
 857 #endif
 858                 break;
 859         case 0x720:
 860                 sfb->fb.fix.mmio_start = mmio_base;
 861                 sfb->fb.fix.mmio_len = 0x00200000;
 862                 smem_size = SM722_VIDEOMEMORYSIZE;
 863                 sfb->dp_regs = ioremap(mmio_base, 0x00a00000);
 864                 sfb->lfb = sfb->dp_regs + 0x00200000;
 865                 sfb->mmio = (smtc_RegBaseAddress =
 866                     sfb->dp_regs + 0x000c0000);
 867                 sfb->vp_regs = sfb->dp_regs + 0x800;
 868
 869                 smtc_seqw(0x62, 0xff);
 870                 smtc_seqw(0x6a, 0x0d);
 871                 smtc_seqw(0x6b, 0x02);
 872                 break;
 873         default:
 874                 dev_err(&pdev->dev,
 875                         "No valid Silicon Motion display chip was detected!");
 876
 877                 goto failed_fb;
 878         }
 879
 880         /* can support 32 bpp */
 881         if (15 == sfb->fb.var.bits_per_pixel)
 882                 sfb->fb.var.bits_per_pixel = 16;
 883
 884         sfb->fb.var.xres_virtual = sfb->fb.var.xres;
 885         sfb->fb.var.yres_virtual = sfb->fb.var.yres;
 886         err = smtc_map_smem(sfb, pdev, smem_size);
 887         if (err)
 888                 goto failed;
 889
 890         smtcfb_setmode(sfb);
 891
 892         err = register_framebuffer(&sfb->fb);
 893         if (err < 0)
 894                 goto failed;
 895
 896         dev_info(&pdev->dev,
 897                  "Silicon Motion SM%X Rev%X primary display mode %dx%d-%d Init Complete.",
 898                  sfb->chip_id, sfb->chip_rev_id, sfb->fb.var.xres,
 899                  sfb->fb.var.yres, sfb->fb.var.bits_per_pixel);
 900
 901         return 0;
 902
 903 failed:
 904         dev_err(&pdev->dev, "Silicon Motion, Inc. primary display init fail.");
 905
 906         smtc_unmap_smem(sfb);
 907         smtc_unmap_mmio(sfb);
 908 failed_fb:
 909         smtc_free_fb_info(sfb);
 910
 911 failed_free:
 912         pci_disable_device(pdev);
 913
 914         return err;
 915 }
 916
 917 /*
 918  * 0x710 (LynxEM)
 919  * 0x712 (LynxEM+)
 920  * 0x720 (Lynx3DM, Lynx3DM+)
 921  */
 922 static DEFINE_PCI_DEVICE_TABLE(smtcfb_pci_table) = {
 923         { PCI_DEVICE(0x126f, 0x710), },
 924         { PCI_DEVICE(0x126f, 0x712), },
 925         { PCI_DEVICE(0x126f, 0x720), },
 926         {0,}
 927 };
 928
 929 static void smtcfb_pci_remove(struct pci_dev *pdev)
 930 {
 931         struct smtcfb_info *sfb;
 932
 933         sfb = pci_get_drvdata(pdev);
 934         smtc_unmap_smem(sfb);
 935         smtc_unmap_mmio(sfb);
 936         unregister_framebuffer(&sfb->fb);
 937         smtc_free_fb_info(sfb);
 938 }
 939
 940 #ifdef CONFIG_PM
 941 static int smtcfb_pci_suspend(struct device *device)
 942 {
 943         struct pci_dev *pdev = to_pci_dev(device);
 944         struct smtcfb_info *sfb;
 945
 946         sfb = pci_get_drvdata(pdev);
 947
 948         /* set the hw in sleep mode use external clock and self memory refresh
 949          * so that we can turn off internal PLLs later on
 950          */
 951         smtc_seqw(0x20, (smtc_seqr(0x20) | 0xc0));
 952         smtc_seqw(0x69, (smtc_seqr(0x69) & 0xf7));
 953
 954         console_lock();
 955         fb_set_suspend(&sfb->fb, 1);
 956         console_unlock();
 957
 958         /* additionally turn off all function blocks including internal PLLs */
 959         smtc_seqw(0x21, 0xff);
 960
 961         return 0;
 962 }
 963
 964 static int smtcfb_pci_resume(struct device *device)
 965 {
 966         struct pci_dev *pdev = to_pci_dev(device);
 967         struct smtcfb_info *sfb;
 968
 969         sfb = pci_get_drvdata(pdev);
 970
 971         /* reinit hardware */
 972         sm7xx_init_hw();
 973         switch (sfb->chip_id) {
 974         case 0x710:
 975         case 0x712:
 976                 /* set MCLK = 14.31818 *  (0x16 / 0x2) */
 977                 smtc_seqw(0x6a, 0x16);
 978                 smtc_seqw(0x6b, 0x02);
 979                 smtc_seqw(0x62, 0x3e);
 980                 /* enable PCI burst */
 981                 smtc_seqw(0x17, 0x20);
 982 #ifdef __BIG_ENDIAN
 983                 if (sfb->fb.var.bits_per_pixel == 32)
 984                         smtc_seqw(0x17, 0x30);
 985 #endif
 986                 break;
 987         case 0x720:
 988                 smtc_seqw(0x62, 0xff);
 989                 smtc_seqw(0x6a, 0x0d);
 990                 smtc_seqw(0x6b, 0x02);
 991                 break;
 992         }
 993
 994         smtc_seqw(0x34, (smtc_seqr(0x34) | 0xc0));
 995         smtc_seqw(0x33, ((smtc_seqr(0x33) | 0x08) & 0xfb));
 996
 997         smtcfb_setmode(sfb);
 998
 999         console_lock();
1000         fb_set_suspend(&sfb->fb, 0);
1001         console_unlock();
1002
1003         return 0;
1004 }
1005
1006 static SIMPLE_DEV_PM_OPS(sm7xx_pm_ops, smtcfb_pci_suspend, smtcfb_pci_resume);
1007 #define SM7XX_PM_OPS (&sm7xx_pm_ops)
1008
1009 #else  /* !CONFIG_PM */
1010
1011 #define SM7XX_PM_OPS NULL
1012
1013 #endif /* !CONFIG_PM */
1014
1015 static struct pci_driver smtcfb_driver = {
1016         .name = "smtcfb",
1017         .id_table = smtcfb_pci_table,
1018         .probe = smtcfb_pci_probe,
1019         .remove = smtcfb_pci_remove,
1020         .driver.pm  = SM7XX_PM_OPS,
1021 };
1022
1023 module_pci_driver(smtcfb_driver);
1024
1025 MODULE_AUTHOR("Siliconmotion ");
1026 MODULE_DESCRIPTION("Framebuffer driver for SMI Graphic Cards");
1027 MODULE_LICENSE("GPL");