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, \
 263                                                 &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, \
 278                                                 &sfb->fb.var.green);
 279                                 val |= chan_to_field(blue, &sfb->fb.var.blue);
 280 #ifdef __BIG_ENDIAN
 281                                 val =
 282                                     (val & 0xff00ff00 >> 8) |
 283                                     (val & 0x00ff00ff << 8);
 284 #endif
 285                                 pal[regno] = val;
 286                         }
 287                 }
 288                 break;
 289
 290         case FB_VISUAL_PSEUDOCOLOR:
 291                 /* color depth 8 bit */
 292                 sm712_setpalette(regno, red, green, blue, info);
 293                 break;
 294
 295         default:
 296                 return 1;       /* unknown type */
 297         }
 298
 299         return 0;
 300
 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 "
 477                 "sfb->fb.var.bits_per_pixel=%d sfb->hz=%d\n",
 478                 sfb->width, sfb->height, sfb->fb.var.bits_per_pixel, sfb->hz);
 479
 480         for (j = 0; j < numVGAModes; j++) {
 481                 if (VGAMode[j].mmSizeX == sfb->width &&
 482                     VGAMode[j].mmSizeY == sfb->height &&
 483                     VGAMode[j].bpp == sfb->fb.var.bits_per_pixel &&
 484                     VGAMode[j].hz == sfb->hz) {
 485
 486                         dev_dbg(&sfb->pdev->dev,
 487                                 "VGAMode[j].mmSizeX=%d VGAMode[j].mmSizeY=%d "
 488                                 "VGAMode[j].bpp=%d VGAMode[j].hz=%d\n",
 489                                 VGAMode[j].mmSizeX, VGAMode[j].mmSizeY,
 490                                 VGAMode[j].bpp, VGAMode[j].hz);
 491
 492                         dev_dbg(&sfb->pdev->dev, "VGAMode index=%d\n", j);
 493
 494                         smtc_mmiowb(0x0, 0x3c6);
 495
 496                         smtc_seqw(0, 0x1);
 497
 498                         smtc_mmiowb(VGAMode[j].Init_MISC, 0x3c2);
 499
 500                         /* init SEQ register SR00 - SR04 */
 501                         for (i = 0; i < SIZE_SR00_SR04; i++)
 502                                 smtc_seqw(i, VGAMode[j].Init_SR00_SR04[i]);
 503
 504                         /* init SEQ register SR10 - SR24 */
 505                         for (i = 0; i < SIZE_SR10_SR24; i++)
 506                                 smtc_seqw(i + 0x10,
 507                                           VGAMode[j].Init_SR10_SR24[i]);
 508
 509                         /* init SEQ register SR30 - SR75 */
 510                         for (i = 0; i < SIZE_SR30_SR75; i++)
 511                                 if (((i + 0x30) != 0x62) \
 512                                         && ((i + 0x30) != 0x6a) \
 513                                         && ((i + 0x30) != 0x6b))
 514                                         smtc_seqw(i + 0x30,
 515                                                 VGAMode[j].Init_SR30_SR75[i]);
 516
 517                         /* init SEQ register SR80 - SR93 */
 518                         for (i = 0; i < SIZE_SR80_SR93; i++)
 519                                 smtc_seqw(i + 0x80,
 520                                           VGAMode[j].Init_SR80_SR93[i]);
 521
 522                         /* init SEQ register SRA0 - SRAF */
 523                         for (i = 0; i < SIZE_SRA0_SRAF; i++)
 524                                 smtc_seqw(i + 0xa0,
 525                                           VGAMode[j].Init_SRA0_SRAF[i]);
 526
 527                         /* init Graphic register GR00 - GR08 */
 528                         for (i = 0; i < SIZE_GR00_GR08; i++)
 529                                 smtc_grphw(i, VGAMode[j].Init_GR00_GR08[i]);
 530
 531                         /* init Attribute register AR00 - AR14 */
 532                         for (i = 0; i < SIZE_AR00_AR14; i++)
 533                                 smtc_attrw(i, VGAMode[j].Init_AR00_AR14[i]);
 534
 535                         /* init CRTC register CR00 - CR18 */
 536                         for (i = 0; i < SIZE_CR00_CR18; i++)
 537                                 smtc_crtcw(i, VGAMode[j].Init_CR00_CR18[i]);
 538
 539                         /* init CRTC register CR30 - CR4D */
 540                         for (i = 0; i < SIZE_CR30_CR4D; i++)
 541                                 smtc_crtcw(i + 0x30,
 542                                            VGAMode[j].Init_CR30_CR4D[i]);
 543
 544                         /* init CRTC register CR90 - CRA7 */
 545                         for (i = 0; i < SIZE_CR90_CRA7; i++)
 546                                 smtc_crtcw(i + 0x90,
 547                                            VGAMode[j].Init_CR90_CRA7[i]);
 548                 }
 549         }
 550         smtc_mmiowb(0x67, 0x3c2);
 551
 552         /* set VPR registers */
 553         writel(0x0, sfb->vp_regs + 0x0C);
 554         writel(0x0, sfb->vp_regs + 0x40);
 555
 556         /* set data width */
 557         m_nScreenStride =
 558                 (sfb->width * sfb->fb.var.bits_per_pixel) / 64;
 559         switch (sfb->fb.var.bits_per_pixel) {
 560         case 8:
 561                 writel(0x0, sfb->vp_regs + 0x0);
 562                 break;
 563         case 16:
 564                 writel(0x00020000, sfb->vp_regs + 0x0);
 565                 break;
 566         case 24:
 567                 writel(0x00040000, sfb->vp_regs + 0x0);
 568                 break;
 569         case 32:
 570                 writel(0x00030000, sfb->vp_regs + 0x0);
 571                 break;
 572         }
 573         writel((u32) (((m_nScreenStride + 2) << 16) | m_nScreenStride),
 574                sfb->vp_regs + 0x10);
 575
 576 }
 577
 578 static void smtc_set_timing(struct smtcfb_info *sfb)
 579 {
 580         switch (sfb->chip_id) {
 581         case 0x710:
 582         case 0x712:
 583         case 0x720:
 584                 sm7xx_set_timing(sfb);
 585                 break;
 586         }
 587 }
 588
 589 void smtcfb_setmode(struct smtcfb_info *sfb)
 590 {
 591         switch (sfb->fb.var.bits_per_pixel) {
 592         case 32:
 593                 sfb->fb.fix.visual       = FB_VISUAL_TRUECOLOR;
 594                 sfb->fb.fix.line_length  = sfb->fb.var.xres * 4;
 595                 sfb->fb.var.red.length   = 8;
 596                 sfb->fb.var.green.length = 8;
 597                 sfb->fb.var.blue.length  = 8;
 598                 sfb->fb.var.red.offset   = 16;
 599                 sfb->fb.var.green.offset = 8;
 600                 sfb->fb.var.blue.offset  = 0;
 601                 break;
 602         case 24:
 603                 sfb->fb.fix.visual       = FB_VISUAL_TRUECOLOR;
 604                 sfb->fb.fix.line_length  = sfb->fb.var.xres * 3;
 605                 sfb->fb.var.red.length   = 8;
 606                 sfb->fb.var.green.length = 8;
 607                 sfb->fb.var.blue.length  = 8;
 608                 sfb->fb.var.red.offset   = 16;
 609                 sfb->fb.var.green.offset = 8;
 610                 sfb->fb.var.blue.offset  = 0;
 611                 break;
 612         case 8:
 613                 sfb->fb.fix.visual       = FB_VISUAL_PSEUDOCOLOR;
 614                 sfb->fb.fix.line_length  = sfb->fb.var.xres;
 615                 sfb->fb.var.red.length   = 3;
 616                 sfb->fb.var.green.length = 3;
 617                 sfb->fb.var.blue.length  = 2;
 618                 sfb->fb.var.red.offset   = 5;
 619                 sfb->fb.var.green.offset = 2;
 620                 sfb->fb.var.blue.offset  = 0;
 621                 break;
 622         case 16:
 623         default:
 624                 sfb->fb.fix.visual       = FB_VISUAL_TRUECOLOR;
 625                 sfb->fb.fix.line_length  = sfb->fb.var.xres * 2;
 626                 sfb->fb.var.red.length   = 5;
 627                 sfb->fb.var.green.length = 6;
 628                 sfb->fb.var.blue.length  = 5;
 629                 sfb->fb.var.red.offset   = 11;
 630                 sfb->fb.var.green.offset = 5;
 631                 sfb->fb.var.blue.offset  = 0;
 632                 break;
 633         }
 634
 635         sfb->width  = sfb->fb.var.xres;
 636         sfb->height = sfb->fb.var.yres;
 637         sfb->hz = 60;
 638         smtc_set_timing(sfb);
 639 }
 640
 641 static int smtc_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
 642 {
 643         /* sanity checks */
 644         if (var->xres_virtual < var->xres)
 645                 var->xres_virtual = var->xres;
 646
 647         if (var->yres_virtual < var->yres)
 648                 var->yres_virtual = var->yres;
 649
 650         /* set valid default bpp */
 651         if ((var->bits_per_pixel != 8)  && (var->bits_per_pixel != 16) &&
 652             (var->bits_per_pixel != 24) && (var->bits_per_pixel != 32))
 653                 var->bits_per_pixel = 16;
 654
 655         return 0;
 656 }
 657
 658 static int smtc_set_par(struct fb_info *info)
 659 {
 660         smtcfb_setmode(info->par);
 661
 662         return 0;
 663 }
 664
 665 static struct fb_ops smtcfb_ops = {
 666         .owner        = THIS_MODULE,
 667         .fb_check_var = smtc_check_var,
 668         .fb_set_par   = smtc_set_par,
 669         .fb_setcolreg = smtc_setcolreg,
 670         .fb_blank     = smtc_blank,
 671         .fb_fillrect  = cfb_fillrect,
 672         .fb_imageblit = cfb_imageblit,
 673         .fb_copyarea  = cfb_copyarea,
 674 #ifdef __BIG_ENDIAN
 675         .fb_read      = smtcfb_read,
 676         .fb_write     = smtcfb_write,
 677 #endif
 678 };
 679
 680 /*
 681  * alloc struct smtcfb_info and assign default values
 682  */
 683 static struct smtcfb_info *smtc_alloc_fb_info(struct pci_dev *pdev)
 684 {
 685         struct smtcfb_info *sfb;
 686
 687         sfb = kzalloc(sizeof(*sfb), GFP_KERNEL);
 688
 689         if (!sfb)
 690                 return NULL;
 691
 692         sfb->pdev = pdev;
 693
 694         sfb->fb.flags          = FBINFO_FLAG_DEFAULT;
 695         sfb->fb.fbops          = &smtcfb_ops;
 696         sfb->fb.fix            = smtcfb_fix;
 697         sfb->fb.var            = smtcfb_var;
 698         sfb->fb.pseudo_palette = sfb->colreg;
 699         sfb->fb.par            = sfb;
 700
 701         return sfb;
 702 }
 703
 704 /*
 705  * free struct smtcfb_info
 706  */
 707 static void smtc_free_fb_info(struct smtcfb_info *sfb)
 708 {
 709         kfree(sfb);
 710 }
 711
 712 /*
 713  * Unmap in the memory mapped IO registers
 714  */
 715
 716 static void smtc_unmap_mmio(struct smtcfb_info *sfb)
 717 {
 718         if (sfb && smtc_RegBaseAddress)
 719                 smtc_RegBaseAddress = NULL;
 720 }
 721
 722 /*
 723  * Map in the screen memory
 724  */
 725
 726 static int smtc_map_smem(struct smtcfb_info *sfb,
 727                 struct pci_dev *pdev, u_long smem_len)
 728 {
 729
 730         sfb->fb.fix.smem_start = pci_resource_start(pdev, 0);
 731
 732 #ifdef __BIG_ENDIAN
 733         if (sfb->fb.var.bits_per_pixel == 32)
 734                 sfb->fb.fix.smem_start += 0x800000;
 735 #endif
 736
 737         sfb->fb.fix.smem_len = smem_len;
 738
 739         sfb->fb.screen_base = sfb->lfb;
 740
 741         if (!sfb->fb.screen_base) {
 742                 dev_err(&pdev->dev,
 743                         "%s: unable to map screen memory\n", sfb->fb.fix.id);
 744                 return -ENOMEM;
 745         }
 746
 747         return 0;
 748 }
 749
 750 /*
 751  * Unmap in the screen memory
 752  *
 753  */
 754 static void smtc_unmap_smem(struct smtcfb_info *sfb)
 755 {
 756         if (sfb && sfb->fb.screen_base) {
 757                 iounmap(sfb->fb.screen_base);
 758                 sfb->fb.screen_base = NULL;
 759         }
 760 }
 761
 762 /*
 763  * We need to wake up the device and make sure its in linear memory mode.
 764  */
 765 static inline void sm7xx_init_hw(void)
 766 {
 767         outb_p(0x18, 0x3c4);
 768         outb_p(0x11, 0x3c5);
 769 }
 770
 771 static int smtcfb_pci_probe(struct pci_dev *pdev,
 772                                    const struct pci_device_id *ent)
 773 {
 774         struct smtcfb_info *sfb;
 775         u_long smem_size = 0x00800000;  /* default 8MB */
 776         int err;
 777         unsigned long mmio_base;
 778
 779         dev_info(&pdev->dev, "Silicon Motion display driver.");
 780
 781         err = pci_enable_device(pdev);  /* enable SMTC chip */
 782         if (err)
 783                 return err;
 784
 785         sprintf(smtcfb_fix.id, "sm%Xfb", ent->device);
 786
 787         sfb = smtc_alloc_fb_info(pdev);
 788
 789         if (!sfb) {
 790                 err = -ENOMEM;
 791                 goto failed_free;
 792         }
 793
 794         sfb->chip_id = ent->device;
 795
 796         pci_set_drvdata(pdev, sfb);
 797
 798         sm7xx_init_hw();
 799
 800         /* get mode parameter from smtc_scr_info */
 801         if (smtc_scr_info.lfb_width != 0) {
 802                 sfb->fb.var.xres = smtc_scr_info.lfb_width;
 803                 sfb->fb.var.yres = smtc_scr_info.lfb_height;
 804                 sfb->fb.var.bits_per_pixel = smtc_scr_info.lfb_depth;
 805         } else {
 806                 /* default resolution 1024x600 16bit mode */
 807                 sfb->fb.var.xres = SCREEN_X_RES;
 808                 sfb->fb.var.yres = SCREEN_Y_RES;
 809                 sfb->fb.var.bits_per_pixel = SCREEN_BPP;
 810         }
 811
 812 #ifdef __BIG_ENDIAN
 813         if (sfb->fb.var.bits_per_pixel == 24)
 814                 sfb->fb.var.bits_per_pixel = (smtc_scr_info.lfb_depth = 32);
 815 #endif
 816         /* Map address and memory detection */
 817         mmio_base = pci_resource_start(pdev, 0);
 818         pci_read_config_byte(pdev, PCI_REVISION_ID, &sfb->chip_rev_id);
 819
 820         switch (sfb->chip_id) {
 821         case 0x710:
 822         case 0x712:
 823                 sfb->fb.fix.mmio_start = mmio_base + 0x00400000;
 824                 sfb->fb.fix.mmio_len = 0x00400000;
 825                 smem_size = SM712_VIDEOMEMORYSIZE;
 826 #ifdef __BIG_ENDIAN
 827                 sfb->lfb = ioremap(mmio_base, 0x00c00000);
 828 #else
 829                 sfb->lfb = ioremap(mmio_base, 0x00800000);
 830 #endif
 831                 sfb->mmio = (smtc_RegBaseAddress =
 832                     sfb->lfb + 0x00700000);
 833                 sfb->dp_regs = sfb->lfb + 0x00408000;
 834                 sfb->vp_regs = sfb->lfb + 0x0040c000;
 835 #ifdef __BIG_ENDIAN
 836                 if (sfb->fb.var.bits_per_pixel == 32) {
 837                         sfb->lfb += 0x800000;
 838                         dev_info(&pdev->dev, "sfb->lfb=%p", sfb->lfb);
 839                 }
 840 #endif
 841                 if (!smtc_RegBaseAddress) {
 842                         dev_err(&pdev->dev,
 843                                 "%s: unable to map memory mapped IO!",
 844                                 sfb->fb.fix.id);
 845                         err = -ENOMEM;
 846                         goto failed_fb;
 847                 }
 848
 849                 /* set MCLK = 14.31818 * (0x16 / 0x2) */
 850                 smtc_seqw(0x6a, 0x16);
 851                 smtc_seqw(0x6b, 0x02);
 852                 smtc_seqw(0x62, 0x3e);
 853                 /* enable PCI burst */
 854                 smtc_seqw(0x17, 0x20);
 855                 /* enable word swap */
 856 #ifdef __BIG_ENDIAN
 857                 if (sfb->fb.var.bits_per_pixel == 32)
 858                         smtc_seqw(0x17, 0x30);
 859 #endif
 860                 break;
 861         case 0x720:
 862                 sfb->fb.fix.mmio_start = mmio_base;
 863                 sfb->fb.fix.mmio_len = 0x00200000;
 864                 smem_size = SM722_VIDEOMEMORYSIZE;
 865                 sfb->dp_regs = ioremap(mmio_base, 0x00a00000);
 866                 sfb->lfb = sfb->dp_regs + 0x00200000;
 867                 sfb->mmio = (smtc_RegBaseAddress =
 868                     sfb->dp_regs + 0x000c0000);
 869                 sfb->vp_regs = sfb->dp_regs + 0x800;
 870
 871                 smtc_seqw(0x62, 0xff);
 872                 smtc_seqw(0x6a, 0x0d);
 873                 smtc_seqw(0x6b, 0x02);
 874                 break;
 875         default:
 876                 dev_err(&pdev->dev,
 877                         "No valid Silicon Motion display chip was detected!");
 878
 879                 goto failed_fb;
 880         }
 881
 882         /* can support 32 bpp */
 883         if (15 == sfb->fb.var.bits_per_pixel)
 884                 sfb->fb.var.bits_per_pixel = 16;
 885
 886         sfb->fb.var.xres_virtual = sfb->fb.var.xres;
 887         sfb->fb.var.yres_virtual = sfb->fb.var.yres;
 888         err = smtc_map_smem(sfb, pdev, smem_size);
 889         if (err)
 890                 goto failed;
 891
 892         smtcfb_setmode(sfb);
 893
 894         err = register_framebuffer(&sfb->fb);
 895         if (err < 0)
 896                 goto failed;
 897
 898         dev_info(&pdev->dev,
 899                  "Silicon Motion SM%X Rev%X primary display mode %dx%d-%d Init Complete.",
 900                  sfb->chip_id, sfb->chip_rev_id, sfb->fb.var.xres,
 901                  sfb->fb.var.yres, sfb->fb.var.bits_per_pixel);
 902
 903         return 0;
 904
 905 failed:
 906         dev_err(&pdev->dev, "Silicon Motion, Inc. primary display init fail.");
 907
 908         smtc_unmap_smem(sfb);
 909         smtc_unmap_mmio(sfb);
 910 failed_fb:
 911         smtc_free_fb_info(sfb);
 912
 913 failed_free:
 914         pci_disable_device(pdev);
 915
 916         return err;
 917 }
 918
 919 /*
 920  * 0x710 (LynxEM)
 921  * 0x712 (LynxEM+)
 922  * 0x720 (Lynx3DM, Lynx3DM+)
 923  */
 924 static DEFINE_PCI_DEVICE_TABLE(smtcfb_pci_table) = {
 925         { PCI_DEVICE(0x126f, 0x710), },
 926         { PCI_DEVICE(0x126f, 0x712), },
 927         { PCI_DEVICE(0x126f, 0x720), },
 928         {0,}
 929 };
 930
 931 static void smtcfb_pci_remove(struct pci_dev *pdev)
 932 {
 933         struct smtcfb_info *sfb;
 934
 935         sfb = pci_get_drvdata(pdev);
 936         pci_set_drvdata(pdev, NULL);
 937         smtc_unmap_smem(sfb);
 938         smtc_unmap_mmio(sfb);
 939         unregister_framebuffer(&sfb->fb);
 940         smtc_free_fb_info(sfb);
 941 }
 942
 943 #ifdef CONFIG_PM
 944 static int smtcfb_pci_suspend(struct device *device)
 945 {
 946         struct pci_dev *pdev = to_pci_dev(device);
 947         struct smtcfb_info *sfb;
 948
 949         sfb = pci_get_drvdata(pdev);
 950
 951         /* set the hw in sleep mode use external clock and self memory refresh
 952          * so that we can turn off internal PLLs later on
 953          */
 954         smtc_seqw(0x20, (smtc_seqr(0x20) | 0xc0));
 955         smtc_seqw(0x69, (smtc_seqr(0x69) & 0xf7));
 956
 957         console_lock();
 958         fb_set_suspend(&sfb->fb, 1);
 959         console_unlock();
 960
 961         /* additionally turn off all function blocks including internal PLLs */
 962         smtc_seqw(0x21, 0xff);
 963
 964         return 0;
 965 }
 966
 967 static int smtcfb_pci_resume(struct device *device)
 968 {
 969         struct pci_dev *pdev = to_pci_dev(device);
 970         struct smtcfb_info *sfb;
 971
 972         sfb = pci_get_drvdata(pdev);
 973
 974         /* reinit hardware */
 975         sm7xx_init_hw();
 976         switch (sfb->chip_id) {
 977         case 0x710:
 978         case 0x712:
 979                 /* set MCLK = 14.31818 *  (0x16 / 0x2) */
 980                 smtc_seqw(0x6a, 0x16);
 981                 smtc_seqw(0x6b, 0x02);
 982                 smtc_seqw(0x62, 0x3e);
 983                 /* enable PCI burst */
 984                 smtc_seqw(0x17, 0x20);
 985 #ifdef __BIG_ENDIAN
 986                 if (sfb->fb.var.bits_per_pixel == 32)
 987                         smtc_seqw(0x17, 0x30);
 988 #endif
 989                 break;
 990         case 0x720:
 991                 smtc_seqw(0x62, 0xff);
 992                 smtc_seqw(0x6a, 0x0d);
 993                 smtc_seqw(0x6b, 0x02);
 994                 break;
 995         }
 996
 997         smtc_seqw(0x34, (smtc_seqr(0x34) | 0xc0));
 998         smtc_seqw(0x33, ((smtc_seqr(0x33) | 0x08) & 0xfb));
 999
1000         smtcfb_setmode(sfb);
1001
1002         console_lock();
1003         fb_set_suspend(&sfb->fb, 0);
1004         console_unlock();
1005
1006         return 0;
1007 }
1008
1009 static const struct dev_pm_ops sm7xx_pm_ops = {
1010         .suspend = smtcfb_pci_suspend,
1011         .resume = smtcfb_pci_resume,
1012         .freeze = smtcfb_pci_suspend,
1013         .thaw = smtcfb_pci_resume,
1014         .poweroff = smtcfb_pci_suspend,
1015         .restore = smtcfb_pci_resume,
1016 };
1017
1018 #define SM7XX_PM_OPS (&sm7xx_pm_ops)
1019
1020 #else  /* !CONFIG_PM */
1021
1022 #define SM7XX_PM_OPS NULL
1023
1024 #endif /* !CONFIG_PM */
1025
1026 static struct pci_driver smtcfb_driver = {
1027         .name = "smtcfb",
1028         .id_table = smtcfb_pci_table,
1029         .probe = smtcfb_pci_probe,
1030         .remove = smtcfb_pci_remove,
1031         .driver.pm  = SM7XX_PM_OPS,
1032 };
1033
1034 module_pci_driver(smtcfb_driver);
1035
1036 MODULE_AUTHOR("Siliconmotion ");
1037 MODULE_DESCRIPTION("Framebuffer driver for SMI Graphic Cards");
1038 MODULE_LICENSE("GPL");