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, [email protected]
   6  *          Boyod [email protected]
   7  *
   8  * Copyright (C) 2009 Lemote, Inc.
   9  * Author: Wu Zhangjin, [email protected]
  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 <[email protected]>
  19  *
  20  * Version 0.09.2621.00.01
  21  *      - Only support Linux Kernel's version 2.6.21.
  22  *      Boyod.yang  <[email protected]>
  23  *
  24  * Version 0.09
  25  *      - Only support Linux Kernel's version 2.6.12.
  26  *      Boyod.yang <[email protected]>
  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/slab.h>
  38 #include <linux/uaccess.h>
  39 #include <linux/console.h>
  40 #include <linux/screen_info.h>
  41
  42 #ifdef CONFIG_PM
  43 #include <linux/pm.h>
  44 #endif
  45
  46 struct screen_info smtc_screen_info;
  47
  48 #include "smtcfb.h"
  49
  50 #ifdef DEBUG
  51 #define smdbg(format, arg...)   printk(KERN_DEBUG format , ## arg)
  52 #else
  53 #define smdbg(format, arg...)
  54 #endif
  55
  56 /*
  57 * Private structure
  58 */
  59 struct smtcfb_info {
  60         /*
  61          * The following is a pointer to be passed into the
  62          * functions below.  The modules outside the main
  63          * voyager.c driver have no knowledge as to what
  64          * is within this structure.
  65          */
  66         struct fb_info fb;
  67         struct display_switch *dispsw;
  68         struct pci_dev *dev;
  69         signed int currcon;
  70
  71         struct {
  72                 u8 red, green, blue;
  73         } palette[NR_RGB];
  74
  75         u_int palette_size;
  76 };
  77
  78 struct par_info {
  79         /*
  80          * Hardware
  81          */
  82         u16 chipID;
  83         unsigned char __iomem *m_pMMIO;
  84         char __iomem *m_pLFB;
  85         char *m_pDPR;
  86         char *m_pVPR;
  87         char *m_pCPR;
  88
  89         u_int width;
  90         u_int height;
  91         u_int hz;
  92         u_long BaseAddressInVRAM;
  93         u8 chipRevID;
  94 };
  95
  96 struct vesa_mode_table  {
  97         char mode_index[6];
  98         u16 lfb_width;
  99         u16 lfb_height;
 100         u16 lfb_depth;
 101 };
 102
 103 static struct vesa_mode_table vesa_mode[] = {
 104         {"0x301", 640,  480,  8},
 105         {"0x303", 800,  600,  8},
 106         {"0x305", 1024, 768,    8},
 107         {"0x307", 1280, 1024, 8},
 108
 109         {"0x311", 640,  480,  16},
 110         {"0x314", 800,  600,  16},
 111         {"0x317", 1024, 768,    16},
 112         {"0x31A", 1280, 1024, 16},
 113
 114         {"0x312", 640,  480,  24},
 115         {"0x315", 800,  600,  24},
 116         {"0x318", 1024, 768,    24},
 117         {"0x31B", 1280, 1024, 24},
 118 };
 119
 120 char __iomem *smtc_RegBaseAddress;      /* Memory Map IO starting address */
 121 char __iomem *smtc_VRAMBaseAddress;     /* video memory starting address */
 122
 123 static u32 colreg[17];
 124 static struct par_info hw;      /* hardware information */
 125
 126 u16 smtc_ChipIDs[] = {
 127         0x710,
 128         0x712,
 129         0x720
 130 };
 131
 132 #define numSMTCchipIDs (sizeof(smtc_ChipIDs) / sizeof(u16))
 133
 134 static void sm712_set_timing(struct smtcfb_info *sfb,
 135                              struct par_info *ppar_info)
 136 {
 137         int i = 0, j = 0;
 138         u32 m_nScreenStride;
 139
 140         smdbg("\nppar_info->width = %d ppar_info->height = %d"
 141                         "sfb->fb.var.bits_per_pixel = %d ppar_info->hz = %d\n",
 142                         ppar_info->width, ppar_info->height,
 143                         sfb->fb.var.bits_per_pixel, ppar_info->hz);
 144
 145         for (j = 0; j < numVGAModes; j++) {
 146                 if (VGAMode[j].mmSizeX == ppar_info->width &&
 147                     VGAMode[j].mmSizeY == ppar_info->height &&
 148                     VGAMode[j].bpp == sfb->fb.var.bits_per_pixel &&
 149                     VGAMode[j].hz == ppar_info->hz) {
 150
 151                         smdbg("\nVGAMode[j].mmSizeX  = %d VGAMode[j].mmSizeY ="
 152                                         "%d VGAMode[j].bpp = %d"
 153                                         "VGAMode[j].hz=%d\n",
 154                                         VGAMode[j].mmSizeX, VGAMode[j].mmSizeY,
 155                                         VGAMode[j].bpp, VGAMode[j].hz);
 156
 157                         smdbg("VGAMode index=%d\n", j);
 158
 159                         smtc_mmiowb(0x0, 0x3c6);
 160
 161                         smtc_seqw(0, 0x1);
 162
 163                         smtc_mmiowb(VGAMode[j].Init_MISC, 0x3c2);
 164
 165                         /* init SEQ register SR00 - SR04 */
 166                         for (i = 0; i < SIZE_SR00_SR04; i++)
 167                                 smtc_seqw(i, VGAMode[j].Init_SR00_SR04[i]);
 168
 169                         /* init SEQ register SR10 - SR24 */
 170                         for (i = 0; i < SIZE_SR10_SR24; i++)
 171                                 smtc_seqw(i + 0x10,
 172                                           VGAMode[j].Init_SR10_SR24[i]);
 173
 174                         /* init SEQ register SR30 - SR75 */
 175                         for (i = 0; i < SIZE_SR30_SR75; i++)
 176                                 if (((i + 0x30) != 0x62) \
 177                                         && ((i + 0x30) != 0x6a) \
 178                                         && ((i + 0x30) != 0x6b))
 179                                         smtc_seqw(i + 0x30,
 180                                                 VGAMode[j].Init_SR30_SR75[i]);
 181
 182                         /* init SEQ register SR80 - SR93 */
 183                         for (i = 0; i < SIZE_SR80_SR93; i++)
 184                                 smtc_seqw(i + 0x80,
 185                                           VGAMode[j].Init_SR80_SR93[i]);
 186
 187                         /* init SEQ register SRA0 - SRAF */
 188                         for (i = 0; i < SIZE_SRA0_SRAF; i++)
 189                                 smtc_seqw(i + 0xa0,
 190                                           VGAMode[j].Init_SRA0_SRAF[i]);
 191
 192                         /* init Graphic register GR00 - GR08 */
 193                         for (i = 0; i < SIZE_GR00_GR08; i++)
 194                                 smtc_grphw(i, VGAMode[j].Init_GR00_GR08[i]);
 195
 196                         /* init Attribute register AR00 - AR14 */
 197                         for (i = 0; i < SIZE_AR00_AR14; i++)
 198                                 smtc_attrw(i, VGAMode[j].Init_AR00_AR14[i]);
 199
 200                         /* init CRTC register CR00 - CR18 */
 201                         for (i = 0; i < SIZE_CR00_CR18; i++)
 202                                 smtc_crtcw(i, VGAMode[j].Init_CR00_CR18[i]);
 203
 204                         /* init CRTC register CR30 - CR4D */
 205                         for (i = 0; i < SIZE_CR30_CR4D; i++)
 206                                 smtc_crtcw(i + 0x30,
 207                                            VGAMode[j].Init_CR30_CR4D[i]);
 208
 209                         /* init CRTC register CR90 - CRA7 */
 210                         for (i = 0; i < SIZE_CR90_CRA7; i++)
 211                                 smtc_crtcw(i + 0x90,
 212                                            VGAMode[j].Init_CR90_CRA7[i]);
 213                 }
 214         }
 215         smtc_mmiowb(0x67, 0x3c2);
 216
 217         /* set VPR registers */
 218         writel(0x0, ppar_info->m_pVPR + 0x0C);
 219         writel(0x0, ppar_info->m_pVPR + 0x40);
 220
 221         /* set data width */
 222         m_nScreenStride =
 223                 (ppar_info->width * sfb->fb.var.bits_per_pixel) / 64;
 224         switch (sfb->fb.var.bits_per_pixel) {
 225         case 8:
 226                 writel(0x0, ppar_info->m_pVPR + 0x0);
 227                 break;
 228         case 16:
 229                 writel(0x00020000, ppar_info->m_pVPR + 0x0);
 230                 break;
 231         case 24:
 232                 writel(0x00040000, ppar_info->m_pVPR + 0x0);
 233                 break;
 234         case 32:
 235                 writel(0x00030000, ppar_info->m_pVPR + 0x0);
 236                 break;
 237         }
 238         writel((u32) (((m_nScreenStride + 2) << 16) | m_nScreenStride),
 239                ppar_info->m_pVPR + 0x10);
 240
 241 }
 242
 243 static void sm712_setpalette(int regno, unsigned red, unsigned green,
 244                              unsigned blue, struct fb_info *info)
 245 {
 246         struct par_info *cur_par = (struct par_info *)info->par;
 247
 248         if (cur_par->BaseAddressInVRAM)
 249                 /*
 250                  * second display palette for dual head. Enable CRT RAM, 6-bit
 251                  * RAM
 252                  */
 253                 smtc_seqw(0x66, (smtc_seqr(0x66) & 0xC3) | 0x20);
 254         else
 255                 /* primary display palette. Enable LCD RAM only, 6-bit RAM */
 256                 smtc_seqw(0x66, (smtc_seqr(0x66) & 0xC3) | 0x10);
 257         smtc_mmiowb(regno, dac_reg);
 258         smtc_mmiowb(red >> 10, dac_val);
 259         smtc_mmiowb(green >> 10, dac_val);
 260         smtc_mmiowb(blue >> 10, dac_val);
 261 }
 262
 263 static void smtc_set_timing(struct smtcfb_info *sfb, struct par_info
 264                 *ppar_info)
 265 {
 266         switch (ppar_info->chipID) {
 267         case 0x710:
 268         case 0x712:
 269         case 0x720:
 270                 sm712_set_timing(sfb, ppar_info);
 271                 break;
 272         }
 273 }
 274
 275 static struct fb_var_screeninfo smtcfb_var = {
 276         .xres = 1024,
 277         .yres = 600,
 278         .xres_virtual = 1024,
 279         .yres_virtual = 600,
 280         .bits_per_pixel = 16,
 281         .red = {16, 8, 0},
 282         .green = {8, 8, 0},
 283         .blue = {0, 8, 0},
 284         .activate = FB_ACTIVATE_NOW,
 285         .height = -1,
 286         .width = -1,
 287         .vmode = FB_VMODE_NONINTERLACED,
 288 };
 289
 290 static struct fb_fix_screeninfo smtcfb_fix = {
 291         .id = "sm712fb",
 292         .type = FB_TYPE_PACKED_PIXELS,
 293         .visual = FB_VISUAL_TRUECOLOR,
 294         .line_length = 800 * 3,
 295         .accel = FB_ACCEL_SMI_LYNX,
 296 };
 297
 298 /* chan_to_field
 299  *
 300  * convert a colour value into a field position
 301  *
 302  * from pxafb.c
 303  */
 304
 305 static inline unsigned int chan_to_field(unsigned int chan,
 306                                          struct fb_bitfield *bf)
 307 {
 308         chan &= 0xffff;
 309         chan >>= 16 - bf->length;
 310         return chan << bf->offset;
 311 }
 312
 313 static int cfb_blank(int blank_mode, struct fb_info *info)
 314 {
 315         /* clear DPMS setting */
 316         switch (blank_mode) {
 317         case FB_BLANK_UNBLANK:
 318                 /* Screen On: HSync: On, VSync : On */
 319                 smtc_seqw(0x01, (smtc_seqr(0x01) & (~0x20)));
 320                 smtc_seqw(0x6a, 0x16);
 321                 smtc_seqw(0x6b, 0x02);
 322                 smtc_seqw(0x21, (smtc_seqr(0x21) & 0x77));
 323                 smtc_seqw(0x22, (smtc_seqr(0x22) & (~0x30)));
 324                 smtc_seqw(0x23, (smtc_seqr(0x23) & (~0xc0)));
 325                 smtc_seqw(0x24, (smtc_seqr(0x24) | 0x01));
 326                 smtc_seqw(0x31, (smtc_seqr(0x31) | 0x03));
 327                 break;
 328         case FB_BLANK_NORMAL:
 329                 /* Screen Off: HSync: On, VSync : On   Soft blank */
 330                 smtc_seqw(0x01, (smtc_seqr(0x01) & (~0x20)));
 331                 smtc_seqw(0x6a, 0x16);
 332                 smtc_seqw(0x6b, 0x02);
 333                 smtc_seqw(0x22, (smtc_seqr(0x22) & (~0x30)));
 334                 smtc_seqw(0x23, (smtc_seqr(0x23) & (~0xc0)));
 335                 smtc_seqw(0x24, (smtc_seqr(0x24) | 0x01));
 336                 smtc_seqw(0x31, ((smtc_seqr(0x31) & (~0x07)) | 0x00));
 337                 break;
 338         case FB_BLANK_VSYNC_SUSPEND:
 339                 /* Screen On: HSync: On, VSync : Off */
 340                 smtc_seqw(0x01, (smtc_seqr(0x01) | 0x20));
 341                 smtc_seqw(0x20, (smtc_seqr(0x20) & (~0xB0)));
 342                 smtc_seqw(0x6a, 0x0c);
 343                 smtc_seqw(0x6b, 0x02);
 344                 smtc_seqw(0x21, (smtc_seqr(0x21) | 0x88));
 345                 smtc_seqw(0x22, ((smtc_seqr(0x22) & (~0x30)) | 0x20));
 346                 smtc_seqw(0x23, ((smtc_seqr(0x23) & (~0xc0)) | 0x20));
 347                 smtc_seqw(0x24, (smtc_seqr(0x24) & (~0x01)));
 348                 smtc_seqw(0x31, ((smtc_seqr(0x31) & (~0x07)) | 0x00));
 349                 smtc_seqw(0x34, (smtc_seqr(0x34) | 0x80));
 350                 break;
 351         case FB_BLANK_HSYNC_SUSPEND:
 352                 /* Screen On: HSync: Off, VSync : On */
 353                 smtc_seqw(0x01, (smtc_seqr(0x01) | 0x20));
 354                 smtc_seqw(0x20, (smtc_seqr(0x20) & (~0xB0)));
 355                 smtc_seqw(0x6a, 0x0c);
 356                 smtc_seqw(0x6b, 0x02);
 357                 smtc_seqw(0x21, (smtc_seqr(0x21) | 0x88));
 358                 smtc_seqw(0x22, ((smtc_seqr(0x22) & (~0x30)) | 0x10));
 359                 smtc_seqw(0x23, ((smtc_seqr(0x23) & (~0xc0)) | 0xD8));
 360                 smtc_seqw(0x24, (smtc_seqr(0x24) & (~0x01)));
 361                 smtc_seqw(0x31, ((smtc_seqr(0x31) & (~0x07)) | 0x00));
 362                 smtc_seqw(0x34, (smtc_seqr(0x34) | 0x80));
 363                 break;
 364         case FB_BLANK_POWERDOWN:
 365                 /* Screen On: HSync: Off, VSync : Off */
 366                 smtc_seqw(0x01, (smtc_seqr(0x01) | 0x20));
 367                 smtc_seqw(0x20, (smtc_seqr(0x20) & (~0xB0)));
 368                 smtc_seqw(0x6a, 0x0c);
 369                 smtc_seqw(0x6b, 0x02);
 370                 smtc_seqw(0x21, (smtc_seqr(0x21) | 0x88));
 371                 smtc_seqw(0x22, ((smtc_seqr(0x22) & (~0x30)) | 0x30));
 372                 smtc_seqw(0x23, ((smtc_seqr(0x23) & (~0xc0)) | 0xD8));
 373                 smtc_seqw(0x24, (smtc_seqr(0x24) & (~0x01)));
 374                 smtc_seqw(0x31, ((smtc_seqr(0x31) & (~0x07)) | 0x00));
 375                 smtc_seqw(0x34, (smtc_seqr(0x34) | 0x80));
 376                 break;
 377         default:
 378                 return -EINVAL;
 379         }
 380
 381         return 0;
 382 }
 383
 384 static int smtc_setcolreg(unsigned regno, unsigned red, unsigned green,
 385                           unsigned blue, unsigned trans, struct fb_info *info)
 386 {
 387         struct smtcfb_info *sfb = (struct smtcfb_info *)info;
 388         u32 val;
 389
 390         if (regno > 255)
 391                 return 1;
 392
 393         switch (sfb->fb.fix.visual) {
 394         case FB_VISUAL_DIRECTCOLOR:
 395         case FB_VISUAL_TRUECOLOR:
 396                 /*
 397                  * 16/32 bit true-colour, use pseuo-palette for 16 base color
 398                  */
 399                 if (regno < 16) {
 400                         if (sfb->fb.var.bits_per_pixel == 16) {
 401                                 u32 *pal = sfb->fb.pseudo_palette;
 402                                 val = chan_to_field(red, &sfb->fb.var.red);
 403                                 val |= chan_to_field(green, \
 404                                                 &sfb->fb.var.green);
 405                                 val |= chan_to_field(blue, &sfb->fb.var.blue);
 406 #ifdef __BIG_ENDIAN
 407                                 pal[regno] =
 408                                     ((red & 0xf800) >> 8) |
 409                                     ((green & 0xe000) >> 13) |
 410                                     ((green & 0x1c00) << 3) |
 411                                     ((blue & 0xf800) >> 3);
 412 #else
 413                                 pal[regno] = val;
 414 #endif
 415                         } else {
 416                                 u32 *pal = sfb->fb.pseudo_palette;
 417                                 val = chan_to_field(red, &sfb->fb.var.red);
 418                                 val |= chan_to_field(green, \
 419                                                 &sfb->fb.var.green);
 420                                 val |= chan_to_field(blue, &sfb->fb.var.blue);
 421 #ifdef __BIG_ENDIAN
 422                                 val =
 423                                     (val & 0xff00ff00 >> 8) |
 424                                     (val & 0x00ff00ff << 8);
 425 #endif
 426                                 pal[regno] = val;
 427                         }
 428                 }
 429                 break;
 430
 431         case FB_VISUAL_PSEUDOCOLOR:
 432                 /* color depth 8 bit */
 433                 sm712_setpalette(regno, red, green, blue, info);
 434                 break;
 435
 436         default:
 437                 return 1;       /* unknown type */
 438         }
 439
 440         return 0;
 441
 442 }
 443
 444 #ifdef __BIG_ENDIAN
 445 static ssize_t smtcfb_read(struct fb_info *info, char __user * buf, size_t
 446                                 count, loff_t *ppos)
 447 {
 448         unsigned long p = *ppos;
 449
 450         u32 *buffer, *dst;
 451         u32 __iomem *src;
 452         int c, i, cnt = 0, err = 0;
 453         unsigned long total_size;
 454
 455         if (!info || !info->screen_base)
 456                 return -ENODEV;
 457
 458         if (info->state != FBINFO_STATE_RUNNING)
 459                 return -EPERM;
 460
 461         total_size = info->screen_size;
 462
 463         if (total_size == 0)
 464                 total_size = info->fix.smem_len;
 465
 466         if (p >= total_size)
 467                 return 0;
 468
 469         if (count >= total_size)
 470                 count = total_size;
 471
 472         if (count + p > total_size)
 473                 count = total_size - p;
 474
 475         buffer = kmalloc((count > PAGE_SIZE) ? PAGE_SIZE : count, GFP_KERNEL);
 476         if (!buffer)
 477                 return -ENOMEM;
 478
 479         src = (u32 __iomem *) (info->screen_base + p);
 480
 481         if (info->fbops->fb_sync)
 482                 info->fbops->fb_sync(info);
 483
 484         while (count) {
 485                 c = (count > PAGE_SIZE) ? PAGE_SIZE : count;
 486                 dst = buffer;
 487                 for (i = c >> 2; i--;) {
 488                         *dst = fb_readl(src++);
 489                         *dst =
 490                             (*dst & 0xff00ff00 >> 8) |
 491                             (*dst & 0x00ff00ff << 8);
 492                         dst++;
 493                 }
 494                 if (c & 3) {
 495                         u8 *dst8 = (u8 *) dst;
 496                         u8 __iomem *src8 = (u8 __iomem *) src;
 497
 498                         for (i = c & 3; i--;) {
 499                                 if (i & 1) {
 500                                         *dst8++ = fb_readb(++src8);
 501                                 } else {
 502                                         *dst8++ = fb_readb(--src8);
 503                                         src8 += 2;
 504                                 }
 505                         }
 506                         src = (u32 __iomem *) src8;
 507                 }
 508
 509                 if (copy_to_user(buf, buffer, c)) {
 510                         err = -EFAULT;
 511                         break;
 512                 }
 513                 *ppos += c;
 514                 buf += c;
 515                 cnt += c;
 516                 count -= c;
 517         }
 518
 519         kfree(buffer);
 520
 521         return (err) ? err : cnt;
 522 }
 523
 524 static ssize_t
 525 smtcfb_write(struct fb_info *info, const char __user *buf, size_t count,
 526              loff_t *ppos)
 527 {
 528         unsigned long p = *ppos;
 529
 530         u32 *buffer, *src;
 531         u32 __iomem *dst;
 532         int c, i, cnt = 0, err = 0;
 533         unsigned long total_size;
 534
 535         if (!info || !info->screen_base)
 536                 return -ENODEV;
 537
 538         if (info->state != FBINFO_STATE_RUNNING)
 539                 return -EPERM;
 540
 541         total_size = info->screen_size;
 542
 543         if (total_size == 0)
 544                 total_size = info->fix.smem_len;
 545
 546         if (p > total_size)
 547                 return -EFBIG;
 548
 549         if (count > total_size) {
 550                 err = -EFBIG;
 551                 count = total_size;
 552         }
 553
 554         if (count + p > total_size) {
 555                 if (!err)
 556                         err = -ENOSPC;
 557
 558                 count = total_size - p;
 559         }
 560
 561         buffer = kmalloc((count > PAGE_SIZE) ? PAGE_SIZE : count, GFP_KERNEL);
 562         if (!buffer)
 563                 return -ENOMEM;
 564
 565         dst = (u32 __iomem *) (info->screen_base + p);
 566
 567         if (info->fbops->fb_sync)
 568                 info->fbops->fb_sync(info);
 569
 570         while (count) {
 571                 c = (count > PAGE_SIZE) ? PAGE_SIZE : count;
 572                 src = buffer;
 573
 574                 if (copy_from_user(src, buf, c)) {
 575                         err = -EFAULT;
 576                         break;
 577                 }
 578
 579                 for (i = c >> 2; i--;) {
 580                         fb_writel((*src & 0xff00ff00 >> 8) |
 581                                   (*src & 0x00ff00ff << 8), dst++);
 582                         src++;
 583                 }
 584                 if (c & 3) {
 585                         u8 *src8 = (u8 *) src;
 586                         u8 __iomem *dst8 = (u8 __iomem *) dst;
 587
 588                         for (i = c & 3; i--;) {
 589                                 if (i & 1) {
 590                                         fb_writeb(*src8++, ++dst8);
 591                                 } else {
 592                                         fb_writeb(*src8++, --dst8);
 593                                         dst8 += 2;
 594                                 }
 595                         }
 596                         dst = (u32 __iomem *) dst8;
 597                 }
 598
 599                 *ppos += c;
 600                 buf += c;
 601                 cnt += c;
 602                 count -= c;
 603         }
 604
 605         kfree(buffer);
 606
 607         return (cnt) ? cnt : err;
 608 }
 609 #endif  /* ! __BIG_ENDIAN */
 610
 611 static struct fb_ops smtcfb_ops = {
 612         .owner = THIS_MODULE,
 613         .fb_setcolreg = smtc_setcolreg,
 614         .fb_blank = cfb_blank,
 615         .fb_fillrect = cfb_fillrect,
 616         .fb_imageblit = cfb_imageblit,
 617         .fb_copyarea = cfb_copyarea,
 618 #ifdef __BIG_ENDIAN
 619         .fb_read = smtcfb_read,
 620         .fb_write = smtcfb_write,
 621 #endif
 622
 623 };
 624
 625 void smtcfb_setmode(struct smtcfb_info *sfb)
 626 {
 627         switch (sfb->fb.var.bits_per_pixel) {
 628         case 32:
 629                 sfb->fb.fix.visual = FB_VISUAL_TRUECOLOR;
 630                 sfb->fb.fix.line_length = sfb->fb.var.xres * 4;
 631                 sfb->fb.var.red.length = 8;
 632                 sfb->fb.var.green.length = 8;
 633                 sfb->fb.var.blue.length = 8;
 634                 sfb->fb.var.red.offset = 16;
 635                 sfb->fb.var.green.offset = 8;
 636                 sfb->fb.var.blue.offset = 0;
 637
 638                 break;
 639         case 8:
 640                 sfb->fb.fix.visual = FB_VISUAL_PSEUDOCOLOR;
 641                 sfb->fb.fix.line_length = sfb->fb.var.xres;
 642                 sfb->fb.var.red.offset = 5;
 643                 sfb->fb.var.red.length = 3;
 644                 sfb->fb.var.green.offset = 2;
 645                 sfb->fb.var.green.length = 3;
 646                 sfb->fb.var.blue.offset = 0;
 647                 sfb->fb.var.blue.length = 2;
 648                 break;
 649         case 24:
 650                 sfb->fb.fix.visual = FB_VISUAL_TRUECOLOR;
 651                 sfb->fb.fix.line_length = sfb->fb.var.xres * 3;
 652                 sfb->fb.var.red.length = 8;
 653                 sfb->fb.var.green.length = 8;
 654                 sfb->fb.var.blue.length = 8;
 655
 656                 sfb->fb.var.red.offset = 16;
 657                 sfb->fb.var.green.offset = 8;
 658                 sfb->fb.var.blue.offset = 0;
 659
 660                 break;
 661         case 16:
 662         default:
 663                 sfb->fb.fix.visual = FB_VISUAL_TRUECOLOR;
 664                 sfb->fb.fix.line_length = sfb->fb.var.xres * 2;
 665
 666                 sfb->fb.var.red.length = 5;
 667                 sfb->fb.var.green.length = 6;
 668                 sfb->fb.var.blue.length = 5;
 669
 670                 sfb->fb.var.red.offset = 11;
 671                 sfb->fb.var.green.offset = 5;
 672                 sfb->fb.var.blue.offset = 0;
 673
 674                 break;
 675         }
 676
 677         hw.width = sfb->fb.var.xres;
 678         hw.height = sfb->fb.var.yres;
 679         hw.hz = 60;
 680         smtc_set_timing(sfb, &hw);
 681 }
 682
 683 /*
 684  * Alloc struct smtcfb_info and assign the default value
 685  */
 686 static struct smtcfb_info *smtc_alloc_fb_info(struct pci_dev *dev,
 687                                                         char *name)
 688 {
 689         struct smtcfb_info *sfb;
 690
 691         sfb = kzalloc(sizeof(struct smtcfb_info), GFP_KERNEL);
 692
 693         if (!sfb)
 694                 return NULL;
 695
 696         sfb->currcon = -1;
 697         sfb->dev = dev;
 698
 699         /*** Init sfb->fb with default value ***/
 700         sfb->fb.flags = FBINFO_FLAG_DEFAULT;
 701         sfb->fb.fbops = &smtcfb_ops;
 702         sfb->fb.var = smtcfb_var;
 703         sfb->fb.fix = smtcfb_fix;
 704
 705         strcpy(sfb->fb.fix.id, name);
 706
 707         sfb->fb.fix.type = FB_TYPE_PACKED_PIXELS;
 708         sfb->fb.fix.type_aux = 0;
 709         sfb->fb.fix.xpanstep = 0;
 710         sfb->fb.fix.ypanstep = 0;
 711         sfb->fb.fix.ywrapstep = 0;
 712         sfb->fb.fix.accel = FB_ACCEL_SMI_LYNX;
 713
 714         sfb->fb.var.nonstd = 0;
 715         sfb->fb.var.activate = FB_ACTIVATE_NOW;
 716         sfb->fb.var.height = -1;
 717         sfb->fb.var.width = -1;
 718         /* text mode acceleration */
 719         sfb->fb.var.accel_flags = FB_ACCELF_TEXT;
 720         sfb->fb.var.vmode = FB_VMODE_NONINTERLACED;
 721         sfb->fb.par = &hw;
 722         sfb->fb.pseudo_palette = colreg;
 723
 724         return sfb;
 725 }
 726
 727 /*
 728  * Unmap in the memory mapped IO registers
 729  */
 730
 731 static void smtc_unmap_mmio(struct smtcfb_info *sfb)
 732 {
 733         if (sfb && smtc_RegBaseAddress)
 734                 smtc_RegBaseAddress = NULL;
 735 }
 736
 737 /*
 738  * Map in the screen memory
 739  */
 740
 741 static int smtc_map_smem(struct smtcfb_info *sfb,
 742                 struct pci_dev *dev, u_long smem_len)
 743 {
 744         if (sfb->fb.var.bits_per_pixel == 32) {
 745 #ifdef __BIG_ENDIAN
 746                 sfb->fb.fix.smem_start = pci_resource_start(dev, 0)
 747                         + 0x800000;
 748 #else
 749                 sfb->fb.fix.smem_start = pci_resource_start(dev, 0);
 750 #endif
 751         } else {
 752                 sfb->fb.fix.smem_start = pci_resource_start(dev, 0);
 753         }
 754
 755         sfb->fb.fix.smem_len = smem_len;
 756
 757         sfb->fb.screen_base = smtc_VRAMBaseAddress;
 758
 759         if (!sfb->fb.screen_base) {
 760                 printk(KERN_INFO "%s: unable to map screen memory\n",
 761                                 sfb->fb.fix.id);
 762                 return -ENOMEM;
 763         }
 764
 765         return 0;
 766 }
 767
 768 /*
 769  * Unmap in the screen memory
 770  *
 771  */
 772 static void smtc_unmap_smem(struct smtcfb_info *sfb)
 773 {
 774         if (sfb && sfb->fb.screen_base) {
 775                 iounmap(sfb->fb.screen_base);
 776                 sfb->fb.screen_base = NULL;
 777         }
 778 }
 779
 780 /*
 781  * We need to wake up the LynxEM+, and make sure its in linear memory mode.
 782  */
 783 static inline void sm7xx_init_hw(void)
 784 {
 785         outb_p(0x18, 0x3c4);
 786         outb_p(0x11, 0x3c5);
 787 }
 788
 789 static void smtc_free_fb_info(struct smtcfb_info *sfb)
 790 {
 791         if (sfb) {
 792                 fb_alloc_cmap(&sfb->fb.cmap, 0, 0);
 793                 kfree(sfb);
 794         }
 795 }
 796
 797 /*
 798  *      sm712vga_setup - process command line options, get vga parameter
 799  *      @options: string of options
 800  *      Returns zero.
 801  *
 802  */
 803 static int __init __maybe_unused sm712vga_setup(char *options)
 804 {
 805         int index;
 806
 807         if (!options || !*options) {
 808                 smdbg("\n No vga parameter\n");
 809                 return -EINVAL;
 810         }
 811
 812         smtc_screen_info.lfb_width = 0;
 813         smtc_screen_info.lfb_height = 0;
 814         smtc_screen_info.lfb_depth = 0;
 815
 816         smdbg("\nsm712vga_setup = %s\n", options);
 817
 818         for (index = 0;
 819              index < (sizeof(vesa_mode) / sizeof(struct vesa_mode_table));
 820              index++) {
 821                 if (strstr(options, vesa_mode[index].mode_index)) {
 822                         smtc_screen_info.lfb_width = vesa_mode[index].lfb_width;
 823                         smtc_screen_info.lfb_height =
 824                                         vesa_mode[index].lfb_height;
 825                         smtc_screen_info.lfb_depth = vesa_mode[index].lfb_depth;
 826                         return 0;
 827                 }
 828         }
 829
 830         return -1;
 831 }
 832 __setup("vga=", sm712vga_setup);
 833
 834 /* Jason (08/13/2009)
 835  * Original init function changed to probe method to be used by pci_drv
 836  * process used to detect chips replaced with kernel process in pci_drv
 837  */
 838 static int __devinit smtcfb_pci_probe(struct pci_dev *pdev,
 839                                    const struct pci_device_id *ent)
 840 {
 841         struct smtcfb_info *sfb;
 842         u_long smem_size = 0x00800000;  /* default 8MB */
 843         char name[16];
 844         int err;
 845         unsigned long pFramebufferPhysical;
 846
 847         printk(KERN_INFO
 848                 "Silicon Motion display driver " SMTC_LINUX_FB_VERSION "\n");
 849
 850         err = pci_enable_device(pdev);  /* enable SMTC chip */
 851         if (err)
 852                 return err;
 853         err = -ENOMEM;
 854
 855         hw.chipID = ent->device;
 856         sprintf(name, "sm%Xfb", hw.chipID);
 857
 858         sfb = smtc_alloc_fb_info(pdev, name);
 859
 860         if (!sfb)
 861                 goto failed_free;
 862         /* Jason (08/13/2009)
 863          * Store fb_info to be further used when suspending and resuming
 864          */
 865         pci_set_drvdata(pdev, sfb);
 866
 867         sm7xx_init_hw();
 868
 869         /*get mode parameter from smtc_screen_info */
 870         if (smtc_screen_info.lfb_width != 0) {
 871                 sfb->fb.var.xres = smtc_screen_info.lfb_width;
 872                 sfb->fb.var.yres = smtc_screen_info.lfb_height;
 873                 sfb->fb.var.bits_per_pixel = smtc_screen_info.lfb_depth;
 874         } else {
 875                 /* default resolution 1024x600 16bit mode */
 876                 sfb->fb.var.xres = SCREEN_X_RES;
 877                 sfb->fb.var.yres = SCREEN_Y_RES;
 878                 sfb->fb.var.bits_per_pixel = SCREEN_BPP;
 879         }
 880
 881 #ifdef __BIG_ENDIAN
 882         if (sfb->fb.var.bits_per_pixel == 24)
 883                 sfb->fb.var.bits_per_pixel = (smtc_screen_info.lfb_depth = 32);
 884 #endif
 885         /* Map address and memory detection */
 886         pFramebufferPhysical = pci_resource_start(pdev, 0);
 887         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw.chipRevID);
 888
 889         switch (hw.chipID) {
 890         case 0x710:
 891         case 0x712:
 892                 sfb->fb.fix.mmio_start = pFramebufferPhysical + 0x00400000;
 893                 sfb->fb.fix.mmio_len = 0x00400000;
 894                 smem_size = SM712_VIDEOMEMORYSIZE;
 895 #ifdef __BIG_ENDIAN
 896                 hw.m_pLFB = (smtc_VRAMBaseAddress =
 897                     ioremap(pFramebufferPhysical, 0x00c00000));
 898 #else
 899                 hw.m_pLFB = (smtc_VRAMBaseAddress =
 900                     ioremap(pFramebufferPhysical, 0x00800000));
 901 #endif
 902                 hw.m_pMMIO = (smtc_RegBaseAddress =
 903                     smtc_VRAMBaseAddress + 0x00700000);
 904                 hw.m_pDPR = smtc_VRAMBaseAddress + 0x00408000;
 905                 hw.m_pVPR = hw.m_pLFB + 0x0040c000;
 906 #ifdef __BIG_ENDIAN
 907                 if (sfb->fb.var.bits_per_pixel == 32) {
 908                         smtc_VRAMBaseAddress += 0x800000;
 909                         hw.m_pLFB += 0x800000;
 910                         printk(KERN_INFO
 911                                 "\nsmtc_VRAMBaseAddress=%p hw.m_pLFB=%p\n",
 912                                         smtc_VRAMBaseAddress, hw.m_pLFB);
 913                 }
 914 #endif
 915                 if (!smtc_RegBaseAddress) {
 916                         printk(KERN_INFO
 917                                 "%s: unable to map memory mapped IO\n",
 918                                 sfb->fb.fix.id);
 919                         err = -ENOMEM;
 920                         goto failed_fb;
 921                 }
 922
 923                 /* set MCLK = 14.31818 * (0x16 / 0x2) */
 924                 smtc_seqw(0x6a, 0x16);
 925                 smtc_seqw(0x6b, 0x02);
 926                 smtc_seqw(0x62, 0x3e);
 927                 /* enable PCI burst */
 928                 smtc_seqw(0x17, 0x20);
 929                 /* enable word swap */
 930 #ifdef __BIG_ENDIAN
 931                 if (sfb->fb.var.bits_per_pixel == 32)
 932                         smtc_seqw(0x17, 0x30);
 933 #endif
 934                 break;
 935         case 0x720:
 936                 sfb->fb.fix.mmio_start = pFramebufferPhysical;
 937                 sfb->fb.fix.mmio_len = 0x00200000;
 938                 smem_size = SM722_VIDEOMEMORYSIZE;
 939                 hw.m_pDPR = ioremap(pFramebufferPhysical, 0x00a00000);
 940                 hw.m_pLFB = (smtc_VRAMBaseAddress =
 941                     hw.m_pDPR + 0x00200000);
 942                 hw.m_pMMIO = (smtc_RegBaseAddress =
 943                     hw.m_pDPR + 0x000c0000);
 944                 hw.m_pVPR = hw.m_pDPR + 0x800;
 945
 946                 smtc_seqw(0x62, 0xff);
 947                 smtc_seqw(0x6a, 0x0d);
 948                 smtc_seqw(0x6b, 0x02);
 949                 break;
 950         default:
 951                 printk(KERN_INFO
 952                 "No valid Silicon Motion display chip was detected!\n");
 953
 954                 goto failed_fb;
 955         }
 956
 957         /* can support 32 bpp */
 958         if (15 == sfb->fb.var.bits_per_pixel)
 959                 sfb->fb.var.bits_per_pixel = 16;
 960
 961         sfb->fb.var.xres_virtual = sfb->fb.var.xres;
 962         sfb->fb.var.yres_virtual = sfb->fb.var.yres;
 963         err = smtc_map_smem(sfb, pdev, smem_size);
 964         if (err)
 965                 goto failed;
 966
 967         smtcfb_setmode(sfb);
 968         /* Primary display starting from 0 postion */
 969         hw.BaseAddressInVRAM = 0;
 970         sfb->fb.par = &hw;
 971
 972         err = register_framebuffer(&sfb->fb);
 973         if (err < 0)
 974                 goto failed;
 975
 976         printk(KERN_INFO "Silicon Motion SM%X Rev%X primary display mode"
 977                         "%dx%d-%d Init Complete.\n", hw.chipID, hw.chipRevID,
 978                         sfb->fb.var.xres, sfb->fb.var.yres,
 979                         sfb->fb.var.bits_per_pixel);
 980
 981         return 0;
 982
 983  failed:
 984         printk(KERN_INFO "Silicon Motion, Inc.  primary display init fail\n");
 985
 986         smtc_unmap_smem(sfb);
 987         smtc_unmap_mmio(sfb);
 988 failed_fb:
 989         smtc_free_fb_info(sfb);
 990
 991 failed_free:
 992         pci_disable_device(pdev);
 993
 994         return err;
 995 }
 996
 997
 998 /* Jason (08/11/2009) PCI_DRV wrapper essential structs */
 999 static DEFINE_PCI_DEVICE_TABLE(smtcfb_pci_table) = {
1000         {0x126f, 0x710, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1001         {0x126f, 0x712, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1002         {0x126f, 0x720, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
1003         {0,}
1004 };
1005
1006
1007 /* Jason (08/14/2009)
1008  * do some clean up when the driver module is removed
1009  */
1010 static void __devexit smtcfb_pci_remove(struct pci_dev *pdev)
1011 {
1012         struct smtcfb_info *sfb;
1013
1014         sfb = pci_get_drvdata(pdev);
1015         pci_set_drvdata(pdev, NULL);
1016         smtc_unmap_smem(sfb);
1017         smtc_unmap_mmio(sfb);
1018         unregister_framebuffer(&sfb->fb);
1019         smtc_free_fb_info(sfb);
1020 }
1021
1022 /* Jason (08/14/2009)
1023  * suspend function, called when the suspend event is triggered
1024  */
1025 static int __maybe_unused smtcfb_suspend(struct pci_dev *pdev, pm_message_t msg)
1026 {
1027         struct smtcfb_info *sfb;
1028         int retv;
1029
1030         sfb = pci_get_drvdata(pdev);
1031
1032         /* set the hw in sleep mode use externel clock and self memory refresh
1033          * so that we can turn off internal PLLs later on
1034          */
1035         smtc_seqw(0x20, (smtc_seqr(0x20) | 0xc0));
1036         smtc_seqw(0x69, (smtc_seqr(0x69) & 0xf7));
1037
1038         switch (msg.event) {
1039         case PM_EVENT_FREEZE:
1040         case PM_EVENT_PRETHAW:
1041                 pdev->dev.power.power_state = msg;
1042                 return 0;
1043         }
1044
1045         /* when doing suspend, call fb apis and pci apis */
1046         if (msg.event == PM_EVENT_SUSPEND) {
1047                 console_lock();
1048                 fb_set_suspend(&sfb->fb, 1);
1049                 console_unlock();
1050                 retv = pci_save_state(pdev);
1051                 pci_disable_device(pdev);
1052                 retv = pci_choose_state(pdev, msg);
1053                 retv = pci_set_power_state(pdev, retv);
1054         }
1055
1056         pdev->dev.power.power_state = msg;
1057
1058         /* additionaly turn off all function blocks including internal PLLs */
1059         smtc_seqw(0x21, 0xff);
1060
1061         return 0;
1062 }
1063
1064 static int __maybe_unused smtcfb_resume(struct pci_dev *pdev)
1065 {
1066         struct smtcfb_info *sfb;
1067         int retv;
1068
1069         sfb = pci_get_drvdata(pdev);
1070
1071         /* when resuming, restore pci data and fb cursor */
1072         if (pdev->dev.power.power_state.event != PM_EVENT_FREEZE) {
1073                 retv = pci_set_power_state(pdev, PCI_D0);
1074                 pci_restore_state(pdev);
1075                 if (pci_enable_device(pdev))
1076                         return -1;
1077                 pci_set_master(pdev);
1078         }
1079
1080         /* reinit hardware */
1081         sm7xx_init_hw();
1082         switch (hw.chipID) {
1083         case 0x710:
1084         case 0x712:
1085                 /* set MCLK = 14.31818 *  (0x16 / 0x2) */
1086                 smtc_seqw(0x6a, 0x16);
1087                 smtc_seqw(0x6b, 0x02);
1088                 smtc_seqw(0x62, 0x3e);
1089                 /* enable PCI burst */
1090                 smtc_seqw(0x17, 0x20);
1091 #ifdef __BIG_ENDIAN
1092                 if (sfb->fb.var.bits_per_pixel == 32)
1093                         smtc_seqw(0x17, 0x30);
1094 #endif
1095                 break;
1096         case 0x720:
1097                 smtc_seqw(0x62, 0xff);
1098                 smtc_seqw(0x6a, 0x0d);
1099                 smtc_seqw(0x6b, 0x02);
1100                 break;
1101         }
1102
1103         smtc_seqw(0x34, (smtc_seqr(0x34) | 0xc0));
1104         smtc_seqw(0x33, ((smtc_seqr(0x33) | 0x08) & 0xfb));
1105
1106         smtcfb_setmode(sfb);
1107
1108         console_lock();
1109         fb_set_suspend(&sfb->fb, 0);
1110         console_unlock();
1111
1112         return 0;
1113 }
1114
1115 /* Jason (08/13/2009)
1116  * pci_driver struct used to wrap the original driver
1117  * so that it can be registered into the kernel and
1118  * the proper method would be called when suspending and resuming
1119  */
1120 static struct pci_driver smtcfb_driver = {
1121         .name = "smtcfb",
1122         .id_table = smtcfb_pci_table,
1123         .probe = smtcfb_pci_probe,
1124         .remove = __devexit_p(smtcfb_pci_remove),
1125 #ifdef CONFIG_PM
1126         .suspend = smtcfb_suspend,
1127         .resume = smtcfb_resume,
1128 #endif
1129 };
1130
1131 static int __init smtcfb_init(void)
1132 {
1133         return pci_register_driver(&smtcfb_driver);
1134 }
1135
1136 static void __exit smtcfb_exit(void)
1137 {
1138         pci_unregister_driver(&smtcfb_driver);
1139 }
1140
1141 module_init(smtcfb_init);
1142 module_exit(smtcfb_exit);
1143
1144 MODULE_AUTHOR("Siliconmotion ");
1145 MODULE_DESCRIPTION("Framebuffer driver for SMI Graphic Cards");
1146 MODULE_LICENSE("GPL");