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 const struct vesa_mode vesa_mode_table[] = {
  98         {"0x301", 640,  480,  8},
  99         {"0x303", 800,  600,  8},
 100         {"0x305", 1024, 768,  8},
 101         {"0x307", 1280, 1024, 8},
 102
 103         {"0x311", 640,  480,  16},
 104         {"0x314", 800,  600,  16},
 105         {"0x317", 1024, 768,  16},
 106         {"0x31A", 1280, 1024, 16},
 107
 108         {"0x312", 640,  480,  24},
 109         {"0x315", 800,  600,  24},
 110         {"0x318", 1024, 768,  24},
 111         {"0x31B", 1280, 1024, 24},
 112 };
 113
 114 static struct screen_info smtc_scr_info;
 115
 116 static char *mode_option;
 117
 118 /* process command line options, get vga parameter */
 119 static void __init sm7xx_vga_setup(char *options)
 120 {
 121         int i;
 122
 123         if (!options || !*options)
 124                 return;
 125
 126         smtc_scr_info.lfb_width = 0;
 127         smtc_scr_info.lfb_height = 0;
 128         smtc_scr_info.lfb_depth = 0;
 129
 130         pr_debug("sm7xx_vga_setup = %s\n", options);
 131
 132         for (i = 0; i < ARRAY_SIZE(vesa_mode_table); i++) {
 133                 if (strstr(options, vesa_mode_table[i].index)) {
 134                         smtc_scr_info.lfb_width  = vesa_mode_table[i].lfb_width;
 135                         smtc_scr_info.lfb_height =
 136                                                 vesa_mode_table[i].lfb_height;
 137                         smtc_scr_info.lfb_depth  = vesa_mode_table[i].lfb_depth;
 138                         return;
 139                 }
 140         }
 141 }
 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
 262                                 val = chan_to_field(red, &sfb->fb->var.red);
 263                                 val |= chan_to_field(green,
 264                                                      &sfb->fb->var.green);
 265                                 val |= chan_to_field(blue, &sfb->fb->var.blue);
 266 #ifdef __BIG_ENDIAN
 267                                 pal[regno] =
 268                                     ((red & 0xf800) >> 8) |
 269                                     ((green & 0xe000) >> 13) |
 270                                     ((green & 0x1c00) << 3) |
 271                                     ((blue & 0xf800) >> 3);
 272 #else
 273                                 pal[regno] = val;
 274 #endif
 275                         } else {
 276                                 u32 *pal = sfb->fb->pseudo_palette;
 277
 278                                 val = chan_to_field(red, &sfb->fb->var.red);
 279                                 val |= chan_to_field(green,
 280                                                      &sfb->fb->var.green);
 281                                 val |= chan_to_field(blue, &sfb->fb->var.blue);
 282 #ifdef __BIG_ENDIAN
 283                                 val =
 284                                     (val & 0xff00ff00 >> 8) |
 285                                     (val & 0x00ff00ff << 8);
 286 #endif
 287                                 pal[regno] = val;
 288                         }
 289                 }
 290                 break;
 291
 292         case FB_VISUAL_PSEUDOCOLOR:
 293                 /* color depth 8 bit */
 294                 sm712_setpalette(regno, red, green, blue, info);
 295                 break;
 296
 297         default:
 298                 return 1;       /* unknown type */
 299         }
 300
 301         return 0;
 302 }
 303
 304 #ifdef __BIG_ENDIAN
 305 static ssize_t smtcfb_read(struct fb_info *info, char __user *buf, size_t
 306                                 count, loff_t *ppos)
 307 {
 308         unsigned long p = *ppos;
 309
 310         u32 *buffer, *dst;
 311         u32 __iomem *src;
 312         int c, i, cnt = 0, err = 0;
 313         unsigned long total_size;
 314
 315         if (!info || !info->screen_base)
 316                 return -ENODEV;
 317
 318         if (info->state != FBINFO_STATE_RUNNING)
 319                 return -EPERM;
 320
 321         total_size = info->screen_size;
 322
 323         if (total_size == 0)
 324                 total_size = info->fix.smem_len;
 325
 326         if (p >= total_size)
 327                 return 0;
 328
 329         if (count >= total_size)
 330                 count = total_size;
 331
 332         if (count + p > total_size)
 333                 count = total_size - p;
 334
 335         buffer = kmalloc((count > PAGE_SIZE) ? PAGE_SIZE : count, GFP_KERNEL);
 336         if (!buffer)
 337                 return -ENOMEM;
 338
 339         src = (u32 __iomem *) (info->screen_base + p);
 340
 341         if (info->fbops->fb_sync)
 342                 info->fbops->fb_sync(info);
 343
 344         while (count) {
 345                 c = (count > PAGE_SIZE) ? PAGE_SIZE : count;
 346                 dst = buffer;
 347                 for (i = c >> 2; i--;) {
 348                         *dst = fb_readl(src++);
 349                         *dst =
 350                             (*dst & 0xff00ff00 >> 8) |
 351                             (*dst & 0x00ff00ff << 8);
 352                         dst++;
 353                 }
 354                 if (c & 3) {
 355                         u8 *dst8 = (u8 *)dst;
 356                         u8 __iomem *src8 = (u8 __iomem *)src;
 357
 358                         for (i = c & 3; i--;) {
 359                                 if (i & 1) {
 360                                         *dst8++ = fb_readb(++src8);
 361                                 } else {
 362                                         *dst8++ = fb_readb(--src8);
 363                                         src8 += 2;
 364                                 }
 365                         }
 366                         src = (u32 __iomem *)src8;
 367                 }
 368
 369                 if (copy_to_user(buf, buffer, c)) {
 370                         err = -EFAULT;
 371                         break;
 372                 }
 373                 *ppos += c;
 374                 buf += c;
 375                 cnt += c;
 376                 count -= c;
 377         }
 378
 379         kfree(buffer);
 380
 381         return (err) ? err : cnt;
 382 }
 383
 384 static ssize_t
 385 smtcfb_write(struct fb_info *info, const char __user *buf, size_t count,
 386              loff_t *ppos)
 387 {
 388         unsigned long p = *ppos;
 389
 390         u32 *buffer, *src;
 391         u32 __iomem *dst;
 392         int c, i, cnt = 0, err = 0;
 393         unsigned long total_size;
 394
 395         if (!info || !info->screen_base)
 396                 return -ENODEV;
 397
 398         if (info->state != FBINFO_STATE_RUNNING)
 399                 return -EPERM;
 400
 401         total_size = info->screen_size;
 402
 403         if (total_size == 0)
 404                 total_size = info->fix.smem_len;
 405
 406         if (p > total_size)
 407                 return -EFBIG;
 408
 409         if (count > total_size) {
 410                 err = -EFBIG;
 411                 count = total_size;
 412         }
 413
 414         if (count + p > total_size) {
 415                 if (!err)
 416                         err = -ENOSPC;
 417
 418                 count = total_size - p;
 419         }
 420
 421         buffer = kmalloc((count > PAGE_SIZE) ? PAGE_SIZE : count, GFP_KERNEL);
 422         if (!buffer)
 423                 return -ENOMEM;
 424
 425         dst = (u32 __iomem *) (info->screen_base + p);
 426
 427         if (info->fbops->fb_sync)
 428                 info->fbops->fb_sync(info);
 429
 430         while (count) {
 431                 c = (count > PAGE_SIZE) ? PAGE_SIZE : count;
 432                 src = buffer;
 433
 434                 if (copy_from_user(src, buf, c)) {
 435                         err = -EFAULT;
 436                         break;
 437                 }
 438
 439                 for (i = c >> 2; i--;) {
 440                         fb_writel((*src & 0xff00ff00 >> 8) |
 441                                   (*src & 0x00ff00ff << 8), dst++);
 442                         src++;
 443                 }
 444                 if (c & 3) {
 445                         u8 *src8 = (u8 *)src;
 446                         u8 __iomem *dst8 = (u8 __iomem *)dst;
 447
 448                         for (i = c & 3; i--;) {
 449                                 if (i & 1) {
 450                                         fb_writeb(*src8++, ++dst8);
 451                                 } else {
 452                                         fb_writeb(*src8++, --dst8);
 453                                         dst8 += 2;
 454                                 }
 455                         }
 456                         dst = (u32 __iomem *)dst8;
 457                 }
 458
 459                 *ppos += c;
 460                 buf += c;
 461                 cnt += c;
 462                 count -= c;
 463         }
 464
 465         kfree(buffer);
 466
 467         return (cnt) ? cnt : err;
 468 }
 469 #endif  /* ! __BIG_ENDIAN */
 470
 471 static void sm7xx_set_timing(struct smtcfb_info *sfb)
 472 {
 473         int i = 0, j = 0;
 474         u32 m_nscreenstride;
 475
 476         dev_dbg(&sfb->pdev->dev,
 477                 "sfb->width=%d sfb->height=%d 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                         dev_dbg(&sfb->pdev->dev,
 486                                 "vgamode[j].mmsizex=%d vgamode[j].mmSizeY=%d 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 static void smtc_set_timing(struct smtcfb_info *sfb)
 576 {
 577         switch (sfb->chip_id) {
 578         case 0x710:
 579         case 0x712:
 580         case 0x720:
 581                 sm7xx_set_timing(sfb);
 582                 break;
 583         }
 584 }
 585
 586 static void smtcfb_setmode(struct smtcfb_info *sfb)
 587 {
 588         switch (sfb->fb->var.bits_per_pixel) {
 589         case 32:
 590                 sfb->fb->fix.visual       = FB_VISUAL_TRUECOLOR;
 591                 sfb->fb->fix.line_length  = sfb->fb->var.xres * 4;
 592                 sfb->fb->var.red.length   = 8;
 593                 sfb->fb->var.green.length = 8;
 594                 sfb->fb->var.blue.length  = 8;
 595                 sfb->fb->var.red.offset   = 16;
 596                 sfb->fb->var.green.offset = 8;
 597                 sfb->fb->var.blue.offset  = 0;
 598                 break;
 599         case 24:
 600                 sfb->fb->fix.visual       = FB_VISUAL_TRUECOLOR;
 601                 sfb->fb->fix.line_length  = sfb->fb->var.xres * 3;
 602                 sfb->fb->var.red.length   = 8;
 603                 sfb->fb->var.green.length = 8;
 604                 sfb->fb->var.blue.length  = 8;
 605                 sfb->fb->var.red.offset   = 16;
 606                 sfb->fb->var.green.offset = 8;
 607                 sfb->fb->var.blue.offset  = 0;
 608                 break;
 609         case 8:
 610                 sfb->fb->fix.visual       = FB_VISUAL_PSEUDOCOLOR;
 611                 sfb->fb->fix.line_length  = sfb->fb->var.xres;
 612                 sfb->fb->var.red.length   = 3;
 613                 sfb->fb->var.green.length = 3;
 614                 sfb->fb->var.blue.length  = 2;
 615                 sfb->fb->var.red.offset   = 5;
 616                 sfb->fb->var.green.offset = 2;
 617                 sfb->fb->var.blue.offset  = 0;
 618                 break;
 619         case 16:
 620         default:
 621                 sfb->fb->fix.visual       = FB_VISUAL_TRUECOLOR;
 622                 sfb->fb->fix.line_length  = sfb->fb->var.xres * 2;
 623                 sfb->fb->var.red.length   = 5;
 624                 sfb->fb->var.green.length = 6;
 625                 sfb->fb->var.blue.length  = 5;
 626                 sfb->fb->var.red.offset   = 11;
 627                 sfb->fb->var.green.offset = 5;
 628                 sfb->fb->var.blue.offset  = 0;
 629                 break;
 630         }
 631
 632         sfb->width  = sfb->fb->var.xres;
 633         sfb->height = sfb->fb->var.yres;
 634         sfb->hz = 60;
 635         smtc_set_timing(sfb);
 636 }
 637
 638 static int smtc_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
 639 {
 640         /* sanity checks */
 641         if (var->xres_virtual < var->xres)
 642                 var->xres_virtual = var->xres;
 643
 644         if (var->yres_virtual < var->yres)
 645                 var->yres_virtual = var->yres;
 646
 647         /* set valid default bpp */
 648         if ((var->bits_per_pixel != 8)  && (var->bits_per_pixel != 16) &&
 649             (var->bits_per_pixel != 24) && (var->bits_per_pixel != 32))
 650                 var->bits_per_pixel = 16;
 651
 652         return 0;
 653 }
 654
 655 static int smtc_set_par(struct fb_info *info)
 656 {
 657         smtcfb_setmode(info->par);
 658
 659         return 0;
 660 }
 661
 662 static struct fb_ops smtcfb_ops = {
 663         .owner        = THIS_MODULE,
 664         .fb_check_var = smtc_check_var,
 665         .fb_set_par   = smtc_set_par,
 666         .fb_setcolreg = smtc_setcolreg,
 667         .fb_blank     = smtc_blank,
 668         .fb_fillrect  = cfb_fillrect,
 669         .fb_imageblit = cfb_imageblit,
 670         .fb_copyarea  = cfb_copyarea,
 671 #ifdef __BIG_ENDIAN
 672         .fb_read      = smtcfb_read,
 673         .fb_write     = smtcfb_write,
 674 #endif
 675 };
 676
 677 /*
 678  * Unmap in the memory mapped IO registers
 679  */
 680
 681 static void smtc_unmap_mmio(struct smtcfb_info *sfb)
 682 {
 683         if (sfb && smtc_regbaseaddress)
 684                 smtc_regbaseaddress = NULL;
 685 }
 686
 687 /*
 688  * Map in the screen memory
 689  */
 690
 691 static int smtc_map_smem(struct smtcfb_info *sfb,
 692                          struct pci_dev *pdev, u_long smem_len)
 693 {
 694         sfb->fb->fix.smem_start = pci_resource_start(pdev, 0);
 695
 696 #ifdef __BIG_ENDIAN
 697         if (sfb->fb->var.bits_per_pixel == 32)
 698                 sfb->fb->fix.smem_start += 0x800000;
 699 #endif
 700
 701         sfb->fb->fix.smem_len = smem_len;
 702
 703         sfb->fb->screen_base = sfb->lfb;
 704
 705         if (!sfb->fb->screen_base) {
 706                 dev_err(&pdev->dev,
 707                         "%s: unable to map screen memory\n", sfb->fb->fix.id);
 708                 return -ENOMEM;
 709         }
 710
 711         return 0;
 712 }
 713
 714 /*
 715  * Unmap in the screen memory
 716  *
 717  */
 718 static void smtc_unmap_smem(struct smtcfb_info *sfb)
 719 {
 720         if (sfb && sfb->fb->screen_base) {
 721                 iounmap(sfb->fb->screen_base);
 722                 sfb->fb->screen_base = NULL;
 723         }
 724 }
 725
 726 /*
 727  * We need to wake up the device and make sure its in linear memory mode.
 728  */
 729 static inline void sm7xx_init_hw(void)
 730 {
 731         outb_p(0x18, 0x3c4);
 732         outb_p(0x11, 0x3c5);
 733 }
 734
 735 static int smtcfb_pci_probe(struct pci_dev *pdev,
 736                             const struct pci_device_id *ent)
 737 {
 738         struct smtcfb_info *sfb;
 739         struct fb_info *info;
 740         u_long smem_size = 0x00800000;  /* default 8MB */
 741         int err;
 742         unsigned long mmio_base;
 743
 744         dev_info(&pdev->dev, "Silicon Motion display driver.");
 745
 746         err = pci_enable_device(pdev);  /* enable SMTC chip */
 747         if (err)
 748                 return err;
 749
 750         err = pci_request_region(pdev, 0, "sm7xxfb");
 751         if (err < 0) {
 752                 dev_err(&pdev->dev, "cannot reserve framebuffer region\n");
 753                 goto failed_regions;
 754         }
 755
 756         sprintf(smtcfb_fix.id, "sm%Xfb", ent->device);
 757
 758         info = framebuffer_alloc(sizeof(*sfb), &pdev->dev);
 759         if (!info) {
 760                 dev_err(&pdev->dev, "framebuffer_alloc failed\n");
 761                 err = -ENOMEM;
 762                 goto failed_free;
 763         }
 764
 765         sfb = info->par;
 766         sfb->fb = info;
 767         sfb->chip_id = ent->device;
 768         sfb->pdev = pdev;
 769         info->flags = FBINFO_FLAG_DEFAULT;
 770         info->fbops = &smtcfb_ops;
 771         info->fix = smtcfb_fix;
 772         info->var = smtcfb_var;
 773         info->pseudo_palette = sfb->colreg;
 774         info->par = sfb;
 775
 776         pci_set_drvdata(pdev, sfb);
 777
 778         sm7xx_init_hw();
 779
 780         /* get mode parameter from smtc_scr_info */
 781         if (smtc_scr_info.lfb_width != 0) {
 782                 sfb->fb->var.xres = smtc_scr_info.lfb_width;
 783                 sfb->fb->var.yres = smtc_scr_info.lfb_height;
 784                 sfb->fb->var.bits_per_pixel = smtc_scr_info.lfb_depth;
 785         } else {
 786                 /* default resolution 1024x600 16bit mode */
 787                 sfb->fb->var.xres = SCREEN_X_RES;
 788                 sfb->fb->var.yres = SCREEN_Y_RES;
 789                 sfb->fb->var.bits_per_pixel = SCREEN_BPP;
 790         }
 791
 792 #ifdef __BIG_ENDIAN
 793         if (sfb->fb->var.bits_per_pixel == 24)
 794                 sfb->fb->var.bits_per_pixel = (smtc_scr_info.lfb_depth = 32);
 795 #endif
 796         /* Map address and memory detection */
 797         mmio_base = pci_resource_start(pdev, 0);
 798         pci_read_config_byte(pdev, PCI_REVISION_ID, &sfb->chip_rev_id);
 799
 800         switch (sfb->chip_id) {
 801         case 0x710:
 802         case 0x712:
 803                 sfb->fb->fix.mmio_start = mmio_base + 0x00400000;
 804                 sfb->fb->fix.mmio_len = 0x00400000;
 805                 smem_size = SM712_VIDEOMEMORYSIZE;
 806 #ifdef __BIG_ENDIAN
 807                 sfb->lfb = ioremap(mmio_base, 0x00c00000);
 808 #else
 809                 sfb->lfb = ioremap(mmio_base, 0x00800000);
 810 #endif
 811                 sfb->mmio = (smtc_regbaseaddress =
 812                     sfb->lfb + 0x00700000);
 813                 sfb->dp_regs = sfb->lfb + 0x00408000;
 814                 sfb->vp_regs = sfb->lfb + 0x0040c000;
 815 #ifdef __BIG_ENDIAN
 816                 if (sfb->fb->var.bits_per_pixel == 32) {
 817                         sfb->lfb += 0x800000;
 818                         dev_info(&pdev->dev, "sfb->lfb=%p", sfb->lfb);
 819                 }
 820 #endif
 821                 if (!smtc_regbaseaddress) {
 822                         dev_err(&pdev->dev,
 823                                 "%s: unable to map memory mapped IO!",
 824                                 sfb->fb->fix.id);
 825                         err = -ENOMEM;
 826                         goto failed_fb;
 827                 }
 828
 829                 /* set MCLK = 14.31818 * (0x16 / 0x2) */
 830                 smtc_seqw(0x6a, 0x16);
 831                 smtc_seqw(0x6b, 0x02);
 832                 smtc_seqw(0x62, 0x3e);
 833                 /* enable PCI burst */
 834                 smtc_seqw(0x17, 0x20);
 835                 /* enable word swap */
 836 #ifdef __BIG_ENDIAN
 837                 if (sfb->fb->var.bits_per_pixel == 32)
 838                         smtc_seqw(0x17, 0x30);
 839 #endif
 840                 break;
 841         case 0x720:
 842                 sfb->fb->fix.mmio_start = mmio_base;
 843                 sfb->fb->fix.mmio_len = 0x00200000;
 844                 smem_size = SM722_VIDEOMEMORYSIZE;
 845                 sfb->dp_regs = ioremap(mmio_base, 0x00a00000);
 846                 sfb->lfb = sfb->dp_regs + 0x00200000;
 847                 sfb->mmio = (smtc_regbaseaddress =
 848                     sfb->dp_regs + 0x000c0000);
 849                 sfb->vp_regs = sfb->dp_regs + 0x800;
 850
 851                 smtc_seqw(0x62, 0xff);
 852                 smtc_seqw(0x6a, 0x0d);
 853                 smtc_seqw(0x6b, 0x02);
 854                 break;
 855         default:
 856                 dev_err(&pdev->dev,
 857                         "No valid Silicon Motion display chip was detected!");
 858
 859                 goto failed_fb;
 860         }
 861
 862         /* can support 32 bpp */
 863         if (15 == sfb->fb->var.bits_per_pixel)
 864                 sfb->fb->var.bits_per_pixel = 16;
 865
 866         sfb->fb->var.xres_virtual = sfb->fb->var.xres;
 867         sfb->fb->var.yres_virtual = sfb->fb->var.yres;
 868         err = smtc_map_smem(sfb, pdev, smem_size);
 869         if (err)
 870                 goto failed;
 871
 872         smtcfb_setmode(sfb);
 873
 874         err = register_framebuffer(info);
 875         if (err < 0)
 876                 goto failed;
 877
 878         dev_info(&pdev->dev,
 879                  "Silicon Motion SM%X Rev%X primary display mode %dx%d-%d Init Complete.",
 880                  sfb->chip_id, sfb->chip_rev_id, sfb->fb->var.xres,
 881                  sfb->fb->var.yres, sfb->fb->var.bits_per_pixel);
 882
 883         return 0;
 884
 885 failed:
 886         dev_err(&pdev->dev, "Silicon Motion, Inc. primary display init fail.");
 887
 888         smtc_unmap_smem(sfb);
 889         smtc_unmap_mmio(sfb);
 890 failed_fb:
 891         framebuffer_release(info);
 892
 893 failed_free:
 894         pci_release_region(pdev, 0);
 895
 896 failed_regions:
 897         pci_disable_device(pdev);
 898
 899         return err;
 900 }
 901
 902 /*
 903  * 0x710 (LynxEM)
 904  * 0x712 (LynxEM+)
 905  * 0x720 (Lynx3DM, Lynx3DM+)
 906  */
 907 static const struct pci_device_id smtcfb_pci_table[] = {
 908         { PCI_DEVICE(0x126f, 0x710), },
 909         { PCI_DEVICE(0x126f, 0x712), },
 910         { PCI_DEVICE(0x126f, 0x720), },
 911         {0,}
 912 };
 913
 914 MODULE_DEVICE_TABLE(pci, smtcfb_pci_table);
 915
 916 static void smtcfb_pci_remove(struct pci_dev *pdev)
 917 {
 918         struct smtcfb_info *sfb;
 919
 920         sfb = pci_get_drvdata(pdev);
 921         smtc_unmap_smem(sfb);
 922         smtc_unmap_mmio(sfb);
 923         unregister_framebuffer(sfb->fb);
 924         framebuffer_release(sfb->fb);
 925         pci_release_region(pdev, 0);
 926         pci_disable_device(pdev);
 927 }
 928
 929 #ifdef CONFIG_PM
 930 static int smtcfb_pci_suspend(struct device *device)
 931 {
 932         struct pci_dev *pdev = to_pci_dev(device);
 933         struct smtcfb_info *sfb;
 934
 935         sfb = pci_get_drvdata(pdev);
 936
 937         /* set the hw in sleep mode use external clock and self memory refresh
 938          * so that we can turn off internal PLLs later on
 939          */
 940         smtc_seqw(0x20, (smtc_seqr(0x20) | 0xc0));
 941         smtc_seqw(0x69, (smtc_seqr(0x69) & 0xf7));
 942
 943         console_lock();
 944         fb_set_suspend(sfb->fb, 1);
 945         console_unlock();
 946
 947         /* additionally turn off all function blocks including internal PLLs */
 948         smtc_seqw(0x21, 0xff);
 949
 950         return 0;
 951 }
 952
 953 static int smtcfb_pci_resume(struct device *device)
 954 {
 955         struct pci_dev *pdev = to_pci_dev(device);
 956         struct smtcfb_info *sfb;
 957
 958         sfb = pci_get_drvdata(pdev);
 959
 960         /* reinit hardware */
 961         sm7xx_init_hw();
 962         switch (sfb->chip_id) {
 963         case 0x710:
 964         case 0x712:
 965                 /* set MCLK = 14.31818 *  (0x16 / 0x2) */
 966                 smtc_seqw(0x6a, 0x16);
 967                 smtc_seqw(0x6b, 0x02);
 968                 smtc_seqw(0x62, 0x3e);
 969                 /* enable PCI burst */
 970                 smtc_seqw(0x17, 0x20);
 971 #ifdef __BIG_ENDIAN
 972                 if (sfb->fb->var.bits_per_pixel == 32)
 973                         smtc_seqw(0x17, 0x30);
 974 #endif
 975                 break;
 976         case 0x720:
 977                 smtc_seqw(0x62, 0xff);
 978                 smtc_seqw(0x6a, 0x0d);
 979                 smtc_seqw(0x6b, 0x02);
 980                 break;
 981         }
 982
 983         smtc_seqw(0x34, (smtc_seqr(0x34) | 0xc0));
 984         smtc_seqw(0x33, ((smtc_seqr(0x33) | 0x08) & 0xfb));
 985
 986         smtcfb_setmode(sfb);
 987
 988         console_lock();
 989         fb_set_suspend(sfb->fb, 0);
 990         console_unlock();
 991
 992         return 0;
 993 }
 994
 995 static SIMPLE_DEV_PM_OPS(sm7xx_pm_ops, smtcfb_pci_suspend, smtcfb_pci_resume);
 996 #define SM7XX_PM_OPS (&sm7xx_pm_ops)
 997
 998 #else  /* !CONFIG_PM */
 999
1000 #define SM7XX_PM_OPS NULL
1001
1002 #endif /* !CONFIG_PM */
1003
1004 static struct pci_driver smtcfb_driver = {
1005         .name = "smtcfb",
1006         .id_table = smtcfb_pci_table,
1007         .probe = smtcfb_pci_probe,
1008         .remove = smtcfb_pci_remove,
1009         .driver.pm  = SM7XX_PM_OPS,
1010 };
1011
1012 static int __init sm712fb_init(void)
1013 {
1014 #ifndef MODULE
1015         char *option = NULL;
1016
1017         if (fb_get_options("sm712fb", &option))
1018                 return -ENODEV;
1019         if (option && *option)
1020                 mode_option = option;
1021 #endif
1022         sm7xx_vga_setup(mode_option);
1023
1024         return pci_register_driver(&smtcfb_driver);
1025 }
1026
1027 module_init(sm712fb_init);
1028
1029 static void __exit sm712fb_exit(void)
1030 {
1031         pci_unregister_driver(&smtcfb_driver);
1032 }
1033
1034 module_exit(sm712fb_exit);
1035
1036 MODULE_AUTHOR("Siliconmotion ");
1037 MODULE_DESCRIPTION("Framebuffer driver for SMI Graphic Cards");
1038 MODULE_LICENSE("GPL");