drivers/staging/sm7xx/smtcfb.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  *  This file is subject to the terms and conditions of the GNU General Public
  12  *  License. See the file COPYING in the main directory of this archive for
  13  *  more details.
  14  *
  15  * Version 0.10.26192.21.01
  16  *      - Add PowerPC/Big endian support
  17  *      - Add 2D support for Lynx
  18  *      - Verified on2.6.19.2  Boyod.yang <boyod.yang@siliconmotion.com.cn>
  19  *
  20  * Version 0.09.2621.00.01
  21  *      - Only support Linux Kernel's version 2.6.21.
  22  *      Boyod.yang  <boyod.yang@siliconmotion.com.cn>
  23  *
  24  * Version 0.09
  25  *      - Only support Linux Kernel's version 2.6.12.
  26  *      Boyod.yang <boyod.yang@siliconmotion.com.cn>
  27  */
  28
  29 #ifndef __KERNEL__
  30 #define __KERNEL__
  31 #endif
  32
  33 #include <linux/io.h>
  34 #include <linux/fb.h>
  35 #include <linux/pci.h>
  36 #include <linux/init.h>
  37 #include <linux/uaccess.h>
  38 #include <linux/console.h>
  39 #include <linux/screen_info.h>
  40
  41 #ifdef CONFIG_PM
  42 #include <linux/pm.h>
  43 #endif
  44
  45 struct screen_info smtc_screen_info;
  46
  47 #include "smtcfb.h"
  48
  49 #ifdef DEBUG
  50 #define smdbg(format, arg...)   printk(KERN_DEBUG format , ## arg)
  51 #else
  52 #define smdbg(format, arg...)
  53 #endif
  54
  55 /*
  56 * Private structure
  57 */
  58 struct smtcfb_info {
  59         /*
  60          * The following is a pointer to be passed into the
  61          * functions below.  The modules outside the main
  62          * voyager.c driver have no knowledge as to what
  63          * is within this structure.
  64          */
  65         struct fb_info fb;
  66         struct display_switch *dispsw;
  67         struct pci_dev *dev;
  68         signed int currcon;
  69
  70         struct {
  71                 u8 red, green, blue;
  72         } palette[NR_RGB];
  73
  74         u_int palette_size;
  75 };
  76
  77 struct par_info {
  78         /*
  79          * Hardware
  80          */
  81         u16 chipID;
  82         unsigned char __iomem *m_pMMIO;
  83         char __iomem *m_pLFB;
  84         char *m_pDPR;
  85         char *m_pVPR;
  86         char *m_pCPR;
  87
  88         u_int width;
  89         u_int height;
  90         u_int hz;
  91         u_long BaseAddressInVRAM;
  92         u8 chipRevID;
  93 };
  94
  95 struct vesa_mode_table  {
  96         char mode_index[6];
  97         u16 lfb_width;
  98         u16 lfb_height;
  99         u16 lfb_depth;
 100 };
 101
 102 static struct vesa_mode_table vesa_mode[] = {
 103         {"0x301", 640,  480,  8},
 104         {"0x303", 800,  600,  8},
 105         {"0x305", 1024, 768,    8},
 106         {"0x307", 1280, 1024, 8},
 107
 108         {"0x311", 640,  480,  16},
 109         {"0x314", 800,  600,  16},
 110         {"0x317", 1024, 768,    16},
 111         {"0x31A", 1280, 1024, 16},
 112
 113         {"0x312", 640,  480,  24},
 114         {"0x315", 800,  600,  24},
 115         {"0x318", 1024, 768,    24},
 116         {"0x31B", 1280, 1024, 24},
 117 };
 118
 119 char __iomem *smtc_RegBaseAddress;      /* Memory Map IO starting address */
 120 char __iomem *smtc_VRAMBaseAddress;     /* video memory starting address */
 121
 122 static u32 colreg[17];
 123 static struct par_info hw;      /* hardware information */
 124
 125 u16 smtc_ChipIDs[] = {
 126         0x710,
 127         0x712,
 128         0x720
 129 };
 130
 131 #define numSMTCchipIDs (sizeof(smtc_ChipIDs) / sizeof(u16))
 132
 133 static void sm712_set_timing(struct smtcfb_info *sfb,
 134                              struct par_info *ppar_info)
 135 {
 136         int i = 0, j = 0;
 137         u32 m_nScreenStride;
 138
 139         smdbg("\nppar_info->width = %d ppar_info->height = %d"
 140                         "sfb->fb.var.bits_per_pixel = %d ppar_info->hz = %d\n",
 141                         ppar_info->width, ppar_info->height,
 142                         sfb->fb.var.bits_per_pixel, ppar_info->hz);
 143
 144         for (j = 0; j < numVGAModes; j++) {
 145                 if (VGAMode[j].mmSizeX == ppar_info->width &&
 146                     VGAMode[j].mmSizeY == ppar_info->height &&
 147                     VGAMode[j].bpp == sfb->fb.var.bits_per_pixel &&
 148                     VGAMode[j].hz == ppar_info->hz) {
 149
 150                         smdbg("\nVGAMode[j].mmSizeX  = %d VGAMode[j].mmSizeY ="
 151                                         "%d VGAMode[j].bpp = %d"
 152                                         "VGAMode[j].hz=%d\n",
 153                                         VGAMode[j].mmSizeX, VGAMode[j].mmSizeY,
 154                                         VGAMode[j].bpp, VGAMode[j].hz);
 155
 156                         smdbg("VGAMode index=%d\n", j);
 157
 158                         smtc_mmiowb(0x0, 0x3c6);
 159
 160                         smtc_seqw(0, 0x1);
 161
 162                         smtc_mmiowb(VGAMode[j].Init_MISC, 0x3c2);
 163
 164                         /* init SEQ register SR00 - SR04 */
 165                         for (i = 0; i < SIZE_SR00_SR04; i++)
 166                                 smtc_seqw(i, VGAMode[j].Init_SR00_SR04[i]);
 167
 168                         /* init SEQ register SR10 - SR24 */
 169                         for (i = 0; i < SIZE_SR10_SR24; i++)
 170                                 smtc_seqw(i + 0x10,
 171                                           VGAMode[j].Init_SR10_SR24[i]);
 172
 173                         /* init SEQ register SR30 - SR75 */
 174                         for (i = 0; i < SIZE_SR30_SR75; i++)
 175                                 if (((i + 0x30) != 0x62) \
 176                                         && ((i + 0x30) != 0x6a) \
 177                                         && ((i + 0x30) != 0x6b))
 178                                         smtc_seqw(i + 0x30,
 179                                                 VGAMode[j].Init_SR30_SR75[i]);
 180
 181                         /* init SEQ register SR80 - SR93 */
 182                         for (i = 0; i < SIZE_SR80_SR93; i++)
 183                                 smtc_seqw(i + 0x80,
 184                                           VGAMode[j].Init_SR80_SR93[i]);
 185
 186                         /* init SEQ register SRA0 - SRAF */
 187                         for (i = 0; i < SIZE_SRA0_SRAF; i++)
 188                                 smtc_seqw(i + 0xa0,
 189                                           VGAMode[j].Init_SRA0_SRAF[i]);
 190
 191                         /* init Graphic register GR00 - GR08 */
 192                         for (i = 0; i < SIZE_GR00_GR08; i++)
 193                                 smtc_grphw(i, VGAMode[j].Init_GR00_GR08[i]);
 194
 195                         /* init Attribute register AR00 - AR14 */
 196                         for (i = 0; i < SIZE_AR00_AR14; i++)
 197                                 smtc_attrw(i, VGAMode[j].Init_AR00_AR14[i]);
 198
 199                         /* init CRTC register CR00 - CR18 */
 200                         for (i = 0; i < SIZE_CR00_CR18; i++)
 201                                 smtc_crtcw(i, VGAMode[j].Init_CR00_CR18[i]);
 202
 203                         /* init CRTC register CR30 - CR4D */
 204                         for (i = 0; i < SIZE_CR30_CR4D; i++)
 205                                 smtc_crtcw(i + 0x30,
 206                                            VGAMode[j].Init_CR30_CR4D[i]);
 207
 208                         /* init CRTC register CR90 - CRA7 */
 209                         for (i = 0; i < SIZE_CR90_CRA7; i++)
 210                                 smtc_crtcw(i + 0x90,
 211                                            VGAMode[j].Init_CR90_CRA7[i]);
 212                 }
 213         }
 214         smtc_mmiowb(0x67, 0x3c2);
 215
 216         /* set VPR registers */
 217         writel(0x0, ppar_info->m_pVPR + 0x0C);
 218         writel(0x0, ppar_info->m_pVPR + 0x40);
 219
 220         /* set data width */
 221         m_nScreenStride =
 222                 (ppar_info->width * sfb->fb.var.bits_per_pixel) / 64;
 223         switch (sfb->fb.var.bits_per_pixel) {
 224         case 8:
 225                 writel(0x0, ppar_info->m_pVPR + 0x0);
 226                 break;
 227         case 16:
 228                 writel(0x00020000, ppar_info->m_pVPR + 0x0);
 229                 break;
 230         case 24:
 231                 writel(0x00040000, ppar_info->m_pVPR + 0x0);
 232                 break;
 233         case 32:
 234                 writel(0x00030000, ppar_info->m_pVPR + 0x0);
 235                 break;
 236         }
 237         writel((u32) (((m_nScreenStride + 2) << 16) | m_nScreenStride),
 238                ppar_info->m_pVPR + 0x10);
 239
 240 }
 241
 242 static void sm712_setpalette(int regno, unsigned red, unsigned green,
 243                              unsigned blue, struct fb_info *info)
 244 {
 245         struct par_info *cur_par = (struct par_info *)info->par;
 246
 247         if (cur_par->BaseAddressInVRAM)
 248                 /*
 249                  * second display palette for dual head. Enable CRT RAM, 6-bit
 250                  * RAM
 251                  */
 252                 smtc_seqw(0x66, (smtc_seqr(0x66) & 0xC3) | 0x20);
 253         else
 254                 /* primary display palette. Enable LCD RAM only, 6-bit RAM */
 255                 smtc_seqw(0x66, (smtc_seqr(0x66) & 0xC3) | 0x10);
 256         smtc_mmiowb(regno, dac_reg);
 257         smtc_mmiowb(red >> 10, dac_val);
 258         smtc_mmiowb(green >> 10, dac_val);
 259         smtc_mmiowb(blue >> 10, dac_val);
 260 }
 261
 262 static void smtc_set_timing(struct smtcfb_info *sfb, struct par_info
 263                 *ppar_info)
 264 {
 265         switch (ppar_info->chipID) {
 266         case 0x710:
 267         case 0x712:
 268         case 0x720:
 269                 sm712_set_timing(sfb, ppar_info);
 270                 break;
 271         }
 272 }
 273
 274 static struct fb_var_screeninfo smtcfb_var = {
 275         .xres = 1024,
 276         .yres = 600,
 277         .xres_virtual = 1024,
 278         .yres_virtual = 600,
 279         .bits_per_pixel = 16,
 280         .red = {16, 8, 0},
 281         .green = {8, 8, 0},
 282         .blue = {0, 8, 0},
 283         .activate = FB_ACTIVATE_NOW,
 284         .height = -1,
 285         .width = -1,
 286         .vmode = FB_VMODE_NONINTERLACED,
 287 };
 288
 289 static struct fb_fix_screeninfo smtcfb_fix = {
 290         .id = "sm712fb",
 291         .type = FB_TYPE_PACKED_PIXELS,
 292         .visual = FB_VISUAL_TRUECOLOR,
 293         .line_length = 800 * 3,
 294         .accel = FB_ACCEL_SMI_LYNX,
 295 };
 296
 297 /* chan_to_field
 298  *
 299  * convert a colour value into a field position
 300  *
 301  * from pxafb.c
 302  */
 303
 304 static inline unsigned int chan_to_field(unsigned int chan,
 305                                          struct fb_bitfield *bf)
 306 {
 307         chan &= 0xffff;
 308         chan >>= 16 - bf->length;
 309         return chan << bf->offset;
 310 }
 311
 312 static int cfb_blank(int blank_mode, struct fb_info *info)
 313 {
 314         /* clear DPMS setting */
 315         switch (blank_mode) {
 316         case FB_BLANK_UNBLANK:
 317                 /* Screen On: HSync: On, VSync : On */
 318                 smtc_seqw(0x01, (smtc_seqr(0x01) & (~0x20)));
 319                 smtc_seqw(0x6a, 0x16);
 320                 smtc_seqw(0x6b, 0x02);
 321                 smtc_seqw(0x21, (smtc_seqr(0x21) & 0x77));
 322                 smtc_seqw(0x22, (smtc_seqr(0x22) & (~0x30)));
 323                 smtc_seqw(0x23, (smtc_seqr(0x23) & (~0xc0)));
 324                 smtc_seqw(0x24, (smtc_seqr(0x24) | 0x01));
 325                 smtc_seqw(0x31, (smtc_seqr(0x31) | 0x03));
 326                 break;
 327         case FB_BLANK_NORMAL:
 328                 /* Screen Off: HSync: On, VSync : On   Soft blank */
 329                 smtc_seqw(0x01, (smtc_seqr(0x01) & (~0x20)));
 330                 smtc_seqw(0x6a, 0x16);
 331                 smtc_seqw(0x6b, 0x02);
 332                 smtc_seqw(0x22, (smtc_seqr(0x22) & (~0x30)));
 333                 smtc_seqw(0x23, (smtc_seqr(0x23) & (~0xc0)));
 334                 smtc_seqw(0x24, (smtc_seqr(0x24) | 0x01));
 335                 smtc_seqw(0x31, ((smtc_seqr(0x31) & (~0x07)) | 0x00));
 336                 break;
 337         case FB_BLANK_VSYNC_SUSPEND:
 338                 /* Screen On: HSync: On, VSync : Off */
 339                 smtc_seqw(0x01, (smtc_seqr(0x01) | 0x20));
 340                 smtc_seqw(0x20, (smtc_seqr(0x20) & (~0xB0)));
 341                 smtc_seqw(0x6a, 0x0c);
 342                 smtc_seqw(0x6b, 0x02);
 343                 smtc_seqw(0x21, (smtc_seqr(0x21) | 0x88));
 344                 smtc_seqw(0x22, ((smtc_seqr(0x22) & (~0x30)) | 0x20));
 345                 smtc_seqw(0x23, ((smtc_seqr(0x23) & (~0xc0)) | 0x20));
 346                 smtc_seqw(0x24, (smtc_seqr(0x24) & (~0x01)));
 347                 smtc_seqw(0x31, ((smtc_seqr(0x31) & (~0x07)) | 0x00));
 348                 smtc_seqw(0x34, (smtc_seqr(0x34) | 0x80));
 349                 break;
 350         case FB_BLANK_HSYNC_SUSPEND:
 351                 /* Screen On: HSync: Off, VSync : On */
 352                 smtc_seqw(0x01, (smtc_seqr(0x01) | 0x20));
 353                 smtc_seqw(0x20, (smtc_seqr(0x20) & (~0xB0)));
 354                 smtc_seqw(0x6a, 0x0c);
 355                 smtc_seqw(0x6b, 0x02);
 356                 smtc_seqw(0x21, (smtc_seqr(0x21) | 0x88));
 357                 smtc_seqw(0x22, ((smtc_seqr(0x22) & (~0x30)) | 0x10));
 358                 smtc_seqw(0x23, ((smtc_seqr(0x23) & (~0xc0)) | 0xD8));
 359                 smtc_seqw(0x24, (smtc_seqr(0x24) & (~0x01)));
 360                 smtc_seqw(0x31, ((smtc_seqr(0x31) & (~0x07)) | 0x00));
 361                 smtc_seqw(0x34, (smtc_seqr(0x34) | 0x80));
 362                 break;
 363         case FB_BLANK_POWERDOWN:
 364                 /* Screen On: HSync: Off, VSync : Off */
 365                 smtc_seqw(0x01, (smtc_seqr(0x01) | 0x20));
 366                 smtc_seqw(0x20, (smtc_seqr(0x20) & (~0xB0)));
 367                 smtc_seqw(0x6a, 0x0c);
 368                 smtc_seqw(0x6b, 0x02);
 369                 smtc_seqw(0x21, (smtc_seqr(0x21) | 0x88));
 370                 smtc_seqw(0x22, ((smtc_seqr(0x22) & (~0x30)) | 0x30));
 371                 smtc_seqw(0x23, ((smtc_seqr(0x23) & (~0xc0)) | 0xD8));
 372                 smtc_seqw(0x24, (smtc_seqr(0x24) & (~0x01)));
 373                 smtc_seqw(0x31, ((smtc_seqr(0x31) & (~0x07)) | 0x00));
 374                 smtc_seqw(0x34, (smtc_seqr(0x34) | 0x80));
 375                 break;
 376         default:
 377                 return -EINVAL;
 378         }
 379
 380         return 0;
 381 }
 382
 383 static int smtc_setcolreg(unsigned regno, unsigned red, unsigned green,
 384                           unsigned blue, unsigned trans, struct fb_info *info)
 385 {
 386         struct smtcfb_info *sfb = (struct smtcfb_info *)info;
 387         u32 val;
 388
 389         if (regno > 255)
 390                 return 1;
 391
 392         switch (sfb->fb.fix.visual) {
 393         case FB_VISUAL_DIRECTCOLOR:
 394         case FB_VISUAL_TRUECOLOR:
 395                 /*
 396                  * 16/32 bit true-colour, use pseuo-palette for 16 base color
 397                  */
 398                 if (regno < 16) {
 399                         if (sfb->fb.var.bits_per_pixel == 16) {
 400                                 u32 *pal = sfb->fb.pseudo_palette;
 401                                 val = chan_to_field(red, &sfb->fb.var.red);
 402                                 val |= chan_to_field(green, \
 403                                                 &sfb->fb.var.green);
 404                                 val |= chan_to_field(blue, &sfb->fb.var.blue);
 405 #ifdef __BIG_ENDIAN
 406                                 pal[regno] =
 407                                     ((red & 0xf800) >> 8) |
 408                                     ((green & 0xe000) >> 13) |
 409                                     ((green & 0x1c00) << 3) |
 410                                     ((blue & 0xf800) >> 3);
 411 #else
 412                                 pal[regno] = val;
 413 #endif
 414                         } else {
 415                                 u32 *pal = sfb->fb.pseudo_palette;
 416                                 val = chan_to_field(red, &sfb->fb.var.red);
 417                                 val |= chan_to_field(green, \
 418                                                 &sfb->fb.var.green);
 419                                 val |= chan_to_field(blue, &sfb->fb.var.blue);
 420 #ifdef __BIG_ENDIAN
 421                                 val =
 422                                     (val & 0xff00ff00 >> 8) |
 423                                     (val & 0x00ff00ff << 8);
 424 #endif
 425                                 pal[regno] = val;
 426                         }
 427                 }
 428                 break;
 429
 430         case FB_VISUAL_PSEUDOCOLOR:
 431                 /* color depth 8 bit */
 432                 sm712_setpalette(regno, red, green, blue, info);
 433                 break;
 434
 435         default:
 436                 return 1;       /* unknown type */
 437         }
 438
 439         return 0;
 440
 441 }
 442
 443 #ifdef __BIG_ENDIAN
 444 static ssize_t smtcfb_read(struct fb_info *info, char __user * buf, size_t
 445                                 count, loff_t *ppos)
 446 {
 447         unsigned long p = *ppos;
 448
 449         u32 *buffer, *dst;
 450         u32 __iomem *src;
 451         int c, i, cnt = 0, err = 0;
 452         unsigned long total_size;
 453
 454         if (!info || !info->screen_base)
 455                 return -ENODEV;
 456
 457         if (info->state != FBINFO_STATE_RUNNING)
 458                 return -EPERM;
 459
 460         total_size = info->screen_size;
 461
 462         if (total_size == 0)
 463                 total_size = info->fix.smem_len;
 464
 465         if (p >= total_size)
 466                 return 0;
 467
 468         if (count >= total_size)
 469                 count = total_size;
 470
 471         if (count + p > total_size)
 472                 count = total_size - p;
 473
 474         buffer = kmalloc((count > PAGE_SIZE) ? PAGE_SIZE : count, GFP_KERNEL);
 475         if (!buffer)
 476                 return -ENOMEM;
 477
 478         src = (u32 __iomem *) (info->screen_base + p);
 479
 480         if (info->fbops->fb_sync)
 481                 info->fbops->fb_sync(info);
 482
 483         while (count) {
 484                 c = (count > PAGE_SIZE) ? PAGE_SIZE : count;
 485                 dst = buffer;
 486                 for (i = c >> 2; i--;) {
 487                         *dst = fb_readl(src++);
 488                         *dst =
 489                             (*dst & 0xff00ff00 >> 8) |
 490                             (*dst & 0x00ff00ff << 8);
 491                         dst++;
 492                 }
 493                 if (c & 3) {
 494                         u8 *dst8 = (u8 *) dst;
 495                         u8 __iomem *src8 = (u8 __iomem *) src;
 496
 497                         for (i = c & 3; i--;) {
 498                                 if (i & 1) {
 499                                         *dst8++ = fb_readb(++src8);
 500                                 } else {
 501                                         *dst8++ = fb_readb(--src8);
 502                                         src8 += 2;
 503                                 }
 504                         }
 505                         src = (u32 __iomem *) src8;
 506                 }
 507
 508                 if (copy_to_user(buf, buffer, c)) {
 509                         err = -EFAULT;
 510                         break;
 511                 }
 512                 *ppos += c;
 513                 buf += c;
 514                 cnt += c;
 515                 count -= c;
 516         }
 517
 518         kfree(buffer);
 519
 520         return (err) ? err : cnt;
 521 }
 522
 523 static ssize_t
 524 smtcfb_write(struct fb_info *info, const char __user *buf, size_t count,
 525              loff_t *ppos)
 526 {
 527         unsigned long p = *ppos;
 528
 529         u32 *buffer, *src;
 530         u32 __iomem *dst;
 531         int c, i, cnt = 0, err = 0;
 532         unsigned long total_size;
 533
 534         if (!info || !info->screen_base)
 535                 return -ENODEV;
 536
 537         if (info->state != FBINFO_STATE_RUNNING)
 538                 return -EPERM;
 539
 540         total_size = info->screen_size;
 541
 542         if (total_size == 0)
 543                 total_size = info->fix.smem_len;
 544
 545         if (p > total_size)
 546                 return -EFBIG;
 547
 548         if (count > total_size) {
 549                 err = -EFBIG;
 550                 count = total_size;
 551         }
 552
 553         if (count + p > total_size) {
 554                 if (!err)
 555                         err = -ENOSPC;
 556
 557                 count = total_size - p;
 558         }
 559
 560         buffer = kmalloc((count > PAGE_SIZE) ? PAGE_SIZE : count, GFP_KERNEL);
 561         if (!buffer)
 562                 return -ENOMEM;
 563
 564         dst = (u32 __iomem *) (info->screen_base + p);
 565
 566         if (info->fbops->fb_sync)
 567                 info->fbops->fb_sync(info);
 568
 569         while (count) {
 570                 c = (count > PAGE_SIZE) ? PAGE_SIZE : count;
 571                 src = buffer;
 572
 573                 if (copy_from_user(src, buf, c)) {
 574                         err = -EFAULT;
 575                         break;
 576                 }
 577
 578                 for (i = c >> 2; i--;) {
 579                         fb_writel((*src & 0xff00ff00 >> 8) |
 580                                   (*src & 0x00ff00ff << 8), dst++);
 581                         src++;
 582                 }
 583                 if (c & 3) {
 584                         u8 *src8 = (u8 *) src;
 585                         u8 __iomem *dst8 = (u8 __iomem *) dst;
 586
 587                         for (i = c & 3; i--;) {
 588                                 if (i & 1) {
 589                                         fb_writeb(*src8++, ++dst8);
 590                                 } else {
 591                                         fb_writeb(*src8++, --dst8);
 592                                         dst8 += 2;
 593                                 }
 594                         }
 595                         dst = (u32 __iomem *) dst8;
 596                 }
 597
 598                 *ppos += c;
 599                 buf += c;
 600                 cnt += c;
 601                 count -= c;
 602         }
 603
 604         kfree(buffer);
 605
 606         return (cnt) ? cnt : err;
 607 }
 608 #endif  /* ! __BIG_ENDIAN */
 609
 610 static struct fb_ops smtcfb_ops = {
 611         .owner = THIS_MODULE,
 612         .fb_setcolreg = smtc_setcolreg,
 613         .fb_blank = cfb_blank,
 614         .fb_fillrect = cfb_fillrect,
 615         .fb_imageblit = cfb_imageblit,
 616         .fb_copyarea = cfb_copyarea,
 617 #ifdef __BIG_ENDIAN
 618         .fb_read = smtcfb_read,
 619         .fb_write = smtcfb_write,
 620 #endif
 621
 622 };
 623
 624 void smtcfb_setmode(struct smtcfb_info *sfb)
 625 {
 626         switch (sfb->fb.var.bits_per_pixel) {
 627         case 32:
 628                 sfb->fb.fix.visual = FB_VISUAL_TRUECOLOR;
 629                 sfb->fb.fix.line_length = sfb->fb.var.xres * 4;
 630                 sfb->fb.var.red.length = 8;
 631                 sfb->fb.var.green.length = 8;
 632                 sfb->fb.var.blue.length = 8;
 633                 sfb->fb.var.red.offset = 16;
 634                 sfb->fb.var.green.offset = 8;
 635                 sfb->fb.var.blue.offset = 0;
 636
 637                 break;
 638         case 8:
 639                 sfb->fb.fix.visual = FB_VISUAL_PSEUDOCOLOR;
 640                 sfb->fb.fix.line_length = sfb->fb.var.xres;
 641                 sfb->fb.var.red.offset = 5;
 642                 sfb->fb.var.red.length = 3;
 643                 sfb->fb.var.green.offset = 2;
 644                 sfb->fb.var.green.length = 3;
 645                 sfb->fb.var.blue.offset = 0;
 646                 sfb->fb.var.blue.length = 2;
 647                 break;
 648         case 24:
 649                 sfb->fb.fix.visual = FB_VISUAL_TRUECOLOR;
 650                 sfb->fb.fix.line_length = sfb->fb.var.xres * 3;
 651                 sfb->fb.var.red.length = 8;
 652                 sfb->fb.var.green.length = 8;
 653                 sfb->fb.var.blue.length = 8;
 654
 655                 sfb->fb.var.red.offset = 16;
 656                 sfb->fb.var.green.offset = 8;
 657                 sfb->fb.var.blue.offset = 0;
 658
 659                 break;
 660         case 16:
 661         default:
 662                 sfb->fb.fix.visual = FB_VISUAL_TRUECOLOR;
 663                 sfb->fb.fix.line_length = sfb->fb.var.xres * 2;
 664
 665                 sfb->fb.var.red.length = 5;
 666                 sfb->fb.var.green.length = 6;
 667                 sfb->fb.var.blue.length = 5;
 668
 669                 sfb->fb.var.red.offset = 11;
 670                 sfb->fb.var.green.offset = 5;
 671                 sfb->fb.var.blue.offset = 0;
 672
 673                 break;
 674         }
 675
 676         hw.width = sfb->fb.var.xres;
 677         hw.height = sfb->fb.var.yres;
 678         hw.hz = 60;
 679         smtc_set_timing(sfb, &hw);
 680 }
 681
 682 /*
 683  * Alloc struct smtcfb_info and assign the default value
 684  */
 685 static struct smtcfb_info *smtc_alloc_fb_info(struct pci_dev *dev,
 686                                                         char *name)
 687 {
 688         struct smtcfb_info *sfb;
 689
 690         sfb = kmalloc(sizeof(struct smtcfb_info), GFP_KERNEL);
 691
 692         if (!sfb)
 693                 return NULL;
 694
 695         memset(sfb, 0, sizeof(struct smtcfb_info));
 696
 697         sfb->currcon = -1;
 698         sfb->dev = dev;
 699
 700         /*** Init sfb->fb with default value ***/
 701         sfb->fb.flags = FBINFO_FLAG_DEFAULT;
 702         sfb->fb.fbops = &smtcfb_ops;
 703         sfb->fb.var = smtcfb_var;
 704         sfb->fb.fix = smtcfb_fix;
 705
 706         strcpy(sfb->fb.fix.id, name);
 707
 708         sfb->fb.fix.type = FB_TYPE_PACKED_PIXELS;
 709         sfb->fb.fix.type_aux = 0;
 710         sfb->fb.fix.xpanstep = 0;
 711         sfb->fb.fix.ypanstep = 0;
 712         sfb->fb.fix.ywrapstep = 0;
 713         sfb->fb.fix.accel = FB_ACCEL_SMI_LYNX;
 714
 715         sfb->fb.var.nonstd = 0;
 716         sfb->fb.var.activate = FB_ACTIVATE_NOW;
 717         sfb->fb.var.height = -1;
 718         sfb->fb.var.width = -1;
 719         /* text mode acceleration */
 720         sfb->fb.var.accel_flags = FB_ACCELF_TEXT;
 721         sfb->fb.var.vmode = FB_VMODE_NONINTERLACED;
 722         sfb->fb.par = &hw;
 723         sfb->fb.pseudo_palette = colreg;
 724
 725         return sfb;
 726 }
 727
 728 /*
 729  * Unmap in the memory mapped IO registers
 730  */
 731
 732 static void smtc_unmap_mmio(struct smtcfb_info *sfb)
 733 {
 734         if (sfb && smtc_RegBaseAddress)
 735                 smtc_RegBaseAddress = NULL;
 736 }
 737
 738 /*
 739  * Map in the screen memory
 740  */
 741
 742 static int smtc_map_smem(struct smtcfb_info *sfb,
 743                 struct pci_dev *dev, u_long smem_len)
 744 {
 745         if (sfb->fb.var.bits_per_pixel == 32) {
 746 #ifdef __BIG_ENDIAN
 747                 sfb->fb.fix.smem_start = pci_resource_start(dev, 0)
 748                         + 0x800000;
 749 #else
 750                 sfb->fb.fix.smem_start = pci_resource_start(dev, 0);
 751 #endif
 752         } else {
 753                 sfb->fb.fix.smem_start = pci_resource_start(dev, 0);
 754         }
 755
 756         sfb->fb.fix.smem_len = smem_len;
 757
 758         sfb->fb.screen_base = smtc_VRAMBaseAddress;
 759
 760         if (!sfb->fb.screen_base) {
 761                 printk(KERN_INFO "%s: unable to map screen memory\n",
 762                                 sfb->fb.fix.id);
 763                 return -ENOMEM;
 764         }
 765
 766         return 0;
 767 }
 768
 769 /*
 770  * Unmap in the screen memory
 771  *
 772  */
 773 static void smtc_unmap_smem(struct smtcfb_info *sfb)
 774 {
 775         if (sfb && sfb->fb.screen_base) {
 776                 iounmap(sfb->fb.screen_base);
 777                 sfb->fb.screen_base = NULL;
 778         }
 779 }
 780
 781 /*
 782  * We need to wake up the LynxEM+, and make sure its in linear memory mode.
 783  */
 784 static inline void sm7xx_init_hw(void)
 785 {
 786         outb_p(0x18, 0x3c4);
 787         outb_p(0x11, 0x3c5);
 788 }
 789
 790 static void smtc_free_fb_info(struct smtcfb_info *sfb)
 791 {
 792         if (sfb) {
 793                 fb_alloc_cmap(&sfb->fb.cmap, 0, 0);
 794                 kfree(sfb);
 795         }
 796 }
 797
 798 /*
 799  *      sm712vga_setup - process command line options, get vga parameter
 800  *      @options: string of options
 801  *      Returns zero.
 802  *
 803  */
 804 static int __init __maybe_unused sm712vga_setup(char *options)
 805 {
 806         int index;
 807
 808         if (!options || !*options) {
 809                 smdbg("\n No vga parameter\n");
 810                 return -EINVAL;
 811         }
 812
 813         smtc_screen_info.lfb_width = 0;
 814         smtc_screen_info.lfb_height = 0;
 815         smtc_screen_info.lfb_depth = 0;
 816
 817         smdbg("\nsm712vga_setup = %s\n", options);
 818
 819         for (index = 0;
 820              index < (sizeof(vesa_mode) / sizeof(struct vesa_mode_table));
 821              index++) {
 822                 if (strstr(options, vesa_mode[index].mode_index)) {
 823                         smtc_screen_info.lfb_width = vesa_mode[index].lfb_width;
 824                         smtc_screen_info.lfb_height =
 825                                         vesa_mode[index].lfb_height;
 826                         smtc_screen_info.lfb_depth = vesa_mode[index].lfb_depth;
 827                         return 0;
 828                 }
 829         }
 830
 831         return -1;
 832 }
 833 __setup("vga=", sm712vga_setup);
 834
 835 /* Jason (08/13/2009)
 836  * Original init function changed to probe method to be used by pci_drv
 837  * process used to detect chips replaced with kernel process in pci_drv
 838  */
 839 static int __init smtcfb_pci_probe(struct pci_dev *pdev,
 840                                    const struct pci_device_id *ent)
 841 {
 842         struct smtcfb_info *sfb;
 843         u_long smem_size = 0x00800000;  /* default 8MB */
 844         char name[16];
 845         int err;
 846         unsigned long pFramebufferPhysical;
 847
 848         printk(KERN_INFO
 849                 "Silicon Motion display driver " SMTC_LINUX_FB_VERSION "\n");
 850
 851         err = pci_enable_device(pdev);  /* enable SMTC chip */
 852
 853         if (err)
 854                 return err;
 855         err = -ENOMEM;
 856
 857         hw.chipID = ent->device;
 858         sprintf(name, "sm%Xfb", hw.chipID);
 859
 860         sfb = smtc_alloc_fb_info(pdev, name);
 861
 862         if (!sfb)
 863                 goto failed;
 864         /* Jason (08/13/2009)
 865          * Store fb_info to be further used when suspending and resuming
 866          */
 867         pci_set_drvdata(pdev, sfb);
 868
 869         sm7xx_init_hw();
 870
 871         /*get mode parameter from smtc_screen_info */
 872         if (smtc_screen_info.lfb_width != 0) {
 873                 sfb->fb.var.xres = smtc_screen_info.lfb_width;
 874                 sfb->fb.var.yres = smtc_screen_info.lfb_height;
 875                 sfb->fb.var.bits_per_pixel = smtc_screen_info.lfb_depth;
 876         } else {
 877                 /* default resolution 1024x600 16bit mode */
 878                 sfb->fb.var.xres = SCREEN_X_RES;
 879                 sfb->fb.var.yres = SCREEN_Y_RES;
 880                 sfb->fb.var.bits_per_pixel = SCREEN_BPP;
 881         }
 882
 883 #ifdef __BIG_ENDIAN
 884         if (sfb->fb.var.bits_per_pixel == 24)
 885                 sfb->fb.var.bits_per_pixel = (smtc_screen_info.lfb_depth = 32);
 886 #endif
 887         /* Map address and memory detection */
 888         pFramebufferPhysical = pci_resource_start(pdev, 0);
 889         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw.chipRevID);
 890
 891         switch (hw.chipID) {
 892         case 0x710:
 893         case 0x712:
 894                 sfb->fb.fix.mmio_start = pFramebufferPhysical + 0x00400000;
 895                 sfb->fb.fix.mmio_len = 0x00400000;
 896                 smem_size = SM712_VIDEOMEMORYSIZE;
 897 #ifdef __BIG_ENDIAN
 898                 hw.m_pLFB = (smtc_VRAMBaseAddress =
 899                     ioremap(pFramebufferPhysical, 0x00c00000));
 900 #else
 901                 hw.m_pLFB = (smtc_VRAMBaseAddress =
 902                     ioremap(pFramebufferPhysical, 0x00800000));
 903 #endif
 904                 hw.m_pMMIO = (smtc_RegBaseAddress =
 905                     smtc_VRAMBaseAddress + 0x00700000);
 906                 hw.m_pDPR = smtc_VRAMBaseAddress + 0x00408000;
 907                 hw.m_pVPR = hw.m_pLFB + 0x0040c000;
 908 #ifdef __BIG_ENDIAN
 909                 if (sfb->fb.var.bits_per_pixel == 32) {
 910                         smtc_VRAMBaseAddress += 0x800000;
 911                         hw.m_pLFB += 0x800000;
 912                         printk(KERN_INFO
 913                                 "\nsmtc_VRAMBaseAddress=%p hw.m_pLFB=%p\n",
 914                                         smtc_VRAMBaseAddress, hw.m_pLFB);
 915                 }
 916 #endif
 917                 if (!smtc_RegBaseAddress) {
 918                         printk(KERN_INFO
 919                                 "%s: unable to map memory mapped IO\n",
 920                                 sfb->fb.fix.id);
 921                         return -ENOMEM;
 922                 }
 923
 924                 /* set MCLK = 14.31818 * (0x16 / 0x2) */
 925                 smtc_seqw(0x6a, 0x16);
 926                 smtc_seqw(0x6b, 0x02);
 927                 smtc_seqw(0x62, 0x3e);
 928                 /* enable PCI burst */
 929                 smtc_seqw(0x17, 0x20);
 930                 /* enable word swap */
 931 #ifdef __BIG_ENDIAN
 932                 if (sfb->fb.var.bits_per_pixel == 32)
 933                         smtc_seqw(0x17, 0x30);
 934 #endif
 935                 break;
 936         case 0x720:
 937                 sfb->fb.fix.mmio_start = pFramebufferPhysical;
 938                 sfb->fb.fix.mmio_len = 0x00200000;
 939                 smem_size = SM722_VIDEOMEMORYSIZE;
 940                 hw.m_pDPR = ioremap(pFramebufferPhysical, 0x00a00000);
 941                 hw.m_pLFB = (smtc_VRAMBaseAddress =
 942                     hw.m_pDPR + 0x00200000);
 943                 hw.m_pMMIO = (smtc_RegBaseAddress =
 944                     hw.m_pDPR + 0x000c0000);
 945                 hw.m_pVPR = hw.m_pDPR + 0x800;
 946
 947                 smtc_seqw(0x62, 0xff);
 948                 smtc_seqw(0x6a, 0x0d);
 949                 smtc_seqw(0x6b, 0x02);
 950                 break;
 951         default:
 952                 printk(KERN_INFO
 953                 "No valid Silicon Motion display chip was detected!\n");
 954
 955                 smtc_free_fb_info(sfb);
 956                 return err;
 957         }
 958
 959         /* can support 32 bpp */
 960         if (15 == sfb->fb.var.bits_per_pixel)
 961                 sfb->fb.var.bits_per_pixel = 16;
 962
 963         sfb->fb.var.xres_virtual = sfb->fb.var.xres;
 964         sfb->fb.var.yres_virtual = sfb->fb.var.yres;
 965         err = smtc_map_smem(sfb, pdev, smem_size);
 966         if (err)
 967                 goto failed;
 968
 969         smtcfb_setmode(sfb);
 970         /* Primary display starting from 0 postion */
 971         hw.BaseAddressInVRAM = 0;
 972         sfb->fb.par = &hw;
 973
 974         err = register_framebuffer(&sfb->fb);
 975         if (err < 0)
 976                 goto failed;
 977
 978         printk(KERN_INFO "Silicon Motion SM%X Rev%X primary display mode"
 979                         "%dx%d-%d Init Complete.\n", hw.chipID, hw.chipRevID,
 980                         sfb->fb.var.xres, sfb->fb.var.yres,
 981                         sfb->fb.var.bits_per_pixel);
 982
 983         return 0;
 984
 985  failed:
 986         printk(KERN_INFO "Silicon Motion, Inc.  primary display init fail\n");
 987
 988         smtc_unmap_smem(sfb);
 989         smtc_unmap_mmio(sfb);
 990         smtc_free_fb_info(sfb);
 991
 992         return err;
 993 }
 994
 995
 996 /* Jason (08/11/2009) PCI_DRV wrapper essential structs */
 997 static const struct pci_device_id smtcfb_pci_table[] = {
 998         {0x126f, 0x710, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
 999         {0x126f, 0x712, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1000         {0x126f, 0x720, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1001         {0,}
1002 };
1003
1004
1005 /* Jason (08/14/2009)
1006  * do some clean up when the driver module is removed
1007  */
1008 static void __devexit smtcfb_pci_remove(struct pci_dev *pdev)
1009 {
1010         struct smtcfb_info *sfb;
1011
1012         sfb = pci_get_drvdata(pdev);
1013         pci_set_drvdata(pdev, NULL);
1014         smtc_unmap_smem(sfb);
1015         smtc_unmap_mmio(sfb);
1016         unregister_framebuffer(&sfb->fb);
1017         smtc_free_fb_info(sfb);
1018 }
1019
1020 /* Jason (08/14/2009)
1021  * suspend function, called when the suspend event is triggered
1022  */
1023 static int __maybe_unused smtcfb_suspend(struct pci_dev *pdev, pm_message_t msg)
1024 {
1025         struct smtcfb_info *sfb;
1026         int retv;
1027
1028         sfb = pci_get_drvdata(pdev);
1029
1030         /* set the hw in sleep mode use externel clock and self memory refresh
1031          * so that we can turn off internal PLLs later on
1032          */
1033         smtc_seqw(0x20, (smtc_seqr(0x20) | 0xc0));
1034         smtc_seqw(0x69, (smtc_seqr(0x69) & 0xf7));
1035
1036         switch (msg.event) {
1037         case PM_EVENT_FREEZE:
1038         case PM_EVENT_PRETHAW:
1039                 pdev->dev.power.power_state = msg;
1040                 return 0;
1041         }
1042
1043         /* when doing suspend, call fb apis and pci apis */
1044         if (msg.event == PM_EVENT_SUSPEND) {
1045                 acquire_console_sem();
1046                 fb_set_suspend(&sfb->fb, 1);
1047                 release_console_sem();
1048                 retv = pci_save_state(pdev);
1049                 pci_disable_device(pdev);
1050                 retv = pci_choose_state(pdev, msg);
1051                 retv = pci_set_power_state(pdev, retv);
1052         }
1053
1054         pdev->dev.power.power_state = msg;
1055
1056         /* additionaly turn off all function blocks including internal PLLs */
1057         smtc_seqw(0x21, 0xff);
1058
1059         return 0;
1060 }
1061
1062 static int __maybe_unused smtcfb_resume(struct pci_dev *pdev)
1063 {
1064         struct smtcfb_info *sfb;
1065         int retv;
1066
1067         sfb = pci_get_drvdata(pdev);
1068
1069         /* when resuming, restore pci data and fb cursor */
1070         if (pdev->dev.power.power_state.event != PM_EVENT_FREEZE) {
1071                 retv = pci_set_power_state(pdev, PCI_D0);
1072                 retv = pci_restore_state(pdev);
1073                 if (pci_enable_device(pdev))
1074                         return -1;
1075                 pci_set_master(pdev);
1076         }
1077
1078         /* reinit hardware */
1079         sm7xx_init_hw();
1080         switch (hw.chipID) {
1081         case 0x710:
1082         case 0x712:
1083                 /* set MCLK = 14.31818 *  (0x16 / 0x2) */
1084                 smtc_seqw(0x6a, 0x16);
1085                 smtc_seqw(0x6b, 0x02);
1086                 smtc_seqw(0x62, 0x3e);
1087                 /* enable PCI burst */
1088                 smtc_seqw(0x17, 0x20);
1089 #ifdef __BIG_ENDIAN
1090                 if (sfb->fb.var.bits_per_pixel == 32)
1091                         smtc_seqw(0x17, 0x30);
1092 #endif
1093                 break;
1094         case 0x720:
1095                 smtc_seqw(0x62, 0xff);
1096                 smtc_seqw(0x6a, 0x0d);
1097                 smtc_seqw(0x6b, 0x02);
1098                 break;
1099         }
1100
1101         smtc_seqw(0x34, (smtc_seqr(0x34) | 0xc0));
1102         smtc_seqw(0x33, ((smtc_seqr(0x33) | 0x08) & 0xfb));
1103
1104         smtcfb_setmode(sfb);
1105
1106         acquire_console_sem();
1107         fb_set_suspend(&sfb->fb, 0);
1108         release_console_sem();
1109
1110         return 0;
1111 }
1112
1113 /* Jason (08/13/2009)
1114  * pci_driver struct used to wrap the original driver
1115  * so that it can be registered into the kernel and
1116  * the proper method would be called when suspending and resuming
1117  */
1118 static struct pci_driver smtcfb_driver = {
1119         .name = "smtcfb",
1120         .id_table = smtcfb_pci_table,
1121         .probe = smtcfb_pci_probe,
1122         .remove = __devexit_p(smtcfb_pci_remove),
1123 #ifdef CONFIG_PM
1124         .suspend = smtcfb_suspend,
1125         .resume = smtcfb_resume,
1126 #endif
1127 };
1128
1129 static int __init smtcfb_init(void)
1130 {
1131         return pci_register_driver(&smtcfb_driver);
1132 }
1133
1134 static void __exit smtcfb_exit(void)
1135 {
1136         pci_unregister_driver(&smtcfb_driver);
1137 }
1138
1139 module_init(smtcfb_init);
1140 module_exit(smtcfb_exit);
1141
1142 MODULE_AUTHOR("Siliconmotion ");
1143 MODULE_DESCRIPTION("Framebuffer driver for SMI Graphic Cards");
1144 MODULE_LICENSE("GPL");