Pileus Git - ~andy/linux/blob - 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  * 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  * Version 0.10.26192.21.01
  19  *      - Add PowerPC/Big endian support
  20  *      - Verified on 2.6.19.2
  21  *      Boyod.yang <boyod.yang@siliconmotion.com.cn>
  22  *
  23  * Version 0.09.2621.00.01
  24  *      - Only support Linux Kernel's version 2.6.21
  25  *      Boyod.yang <boyod.yang@siliconmotion.com.cn>
  26  *
  27  * Version 0.09
  28  *      - Only support Linux Kernel's version 2.6.12
  29  *      Boyod.yang <boyod.yang@siliconmotion.com.cn>
  30  */
  31
  32 #include <linux/io.h>
  33 #include <linux/fb.h>
  34 #include <linux/pci.h>
  35 #include <linux/init.h>
  36 #include <linux/slab.h>
  37 #include <linux/uaccess.h>
  38 #include <linux/module.h>
  39 #include <linux/console.h>
  40 #include <linux/screen_info.h>
  41
  42 #ifdef CONFIG_PM
  43 #include <linux/pm.h>
  44 #include <linux/module.h>
  45 #endif
  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 struct screen_info smtc_screen_info;
  56
  57 /*
  58 * Private structure
  59 */
  60 struct smtcfb_info {
  61         /*
  62          * The following is a pointer to be passed into the
  63          * functions below.  The modules outside the main
  64          * voyager.c driver have no knowledge as to what
  65          * is within this structure.
  66          */
  67         struct fb_info fb;
  68         struct display_switch *dispsw;
  69         struct pci_dev *dev;
  70         signed int currcon;
  71
  72         struct {
  73                 u8 red, green, blue;
  74         } palette[NR_RGB];
  75
  76         u_int palette_size;
  77 };
  78
  79 struct par_info {
  80         /*
  81          * Hardware
  82          */
  83         u16 chipID;
  84         unsigned char __iomem *m_pMMIO;
  85         char __iomem *m_pLFB;
  86         char *m_pDPR;
  87         char *m_pVPR;
  88         char *m_pCPR;
  89
  90         u_int width;
  91         u_int height;
  92         u_int hz;
  93         u_long BaseAddressInVRAM;
  94         u8 chipRevID;
  95 };
  96
  97 struct vesa_mode_table  {
  98         char mode_index[6];
  99         u16 lfb_width;
 100         u16 lfb_height;
 101         u16 lfb_depth;
 102 };
 103
 104 static struct vesa_mode_table vesa_mode[] = {
 105         {"0x301", 640,  480,  8},
 106         {"0x303", 800,  600,  8},
 107         {"0x305", 1024, 768,  8},
 108         {"0x307", 1280, 1024, 8},
 109
 110         {"0x311", 640,  480,  16},
 111         {"0x314", 800,  600,  16},
 112         {"0x317", 1024, 768,  16},
 113         {"0x31A", 1280, 1024, 16},
 114
 115         {"0x312", 640,  480,  24},
 116         {"0x315", 800,  600,  24},
 117         {"0x318", 1024, 768,  24},
 118         {"0x31B", 1280, 1024, 24},
 119 };
 120
 121 char __iomem *smtc_RegBaseAddress;      /* Memory Map IO starting address */
 122 char __iomem *smtc_VRAMBaseAddress;     /* video memory starting address */
 123
 124 static u32 colreg[17];
 125 static struct par_info hw;      /* hardware information */
 126
 127 u16 smtc_ChipIDs[] = {
 128         0x710,
 129         0x712,
 130         0x720
 131 };
 132
 133 #define numSMTCchipIDs ARRAY_SIZE(smtc_ChipIDs)
 134
 135 static struct fb_var_screeninfo smtcfb_var = {
 136         .xres           = 1024,
 137         .yres           = 600,
 138         .xres_virtual   = 1024,
 139         .yres_virtual   = 600,
 140         .bits_per_pixel = 16,
 141         .red            = {16, 8, 0},
 142         .green          = {8, 8, 0},
 143         .blue           = {0, 8, 0},
 144         .activate       = FB_ACTIVATE_NOW,
 145         .height         = -1,
 146         .width          = -1,
 147         .vmode          = FB_VMODE_NONINTERLACED,
 148 };
 149
 150 static struct fb_fix_screeninfo smtcfb_fix = {
 151         .id             = "sm712fb",
 152         .type           = FB_TYPE_PACKED_PIXELS,
 153         .visual         = FB_VISUAL_TRUECOLOR,
 154         .line_length    = 800 * 3,
 155         .accel          = FB_ACCEL_SMI_LYNX,
 156 };
 157
 158 static void sm712_set_timing(struct smtcfb_info *sfb,
 159                              struct par_info *ppar_info)
 160 {
 161         int i = 0, j = 0;
 162         u32 m_nScreenStride;
 163
 164         smdbg("\nppar_info->width = %d ppar_info->height = %d"
 165                         "sfb->fb.var.bits_per_pixel = %d ppar_info->hz = %d\n",
 166                         ppar_info->width, ppar_info->height,
 167                         sfb->fb.var.bits_per_pixel, ppar_info->hz);
 168
 169         for (j = 0; j < numVGAModes; j++) {
 170                 if (VGAMode[j].mmSizeX == ppar_info->width &&
 171                     VGAMode[j].mmSizeY == ppar_info->height &&
 172                     VGAMode[j].bpp == sfb->fb.var.bits_per_pixel &&
 173                     VGAMode[j].hz == ppar_info->hz) {
 174
 175                         smdbg("\nVGAMode[j].mmSizeX  = %d VGAMode[j].mmSizeY ="
 176                                         "%d VGAMode[j].bpp = %d"
 177                                         "VGAMode[j].hz=%d\n",
 178                                         VGAMode[j].mmSizeX, VGAMode[j].mmSizeY,
 179                                         VGAMode[j].bpp, VGAMode[j].hz);
 180
 181                         smdbg("VGAMode index=%d\n", j);
 182
 183                         smtc_mmiowb(0x0, 0x3c6);
 184
 185                         smtc_seqw(0, 0x1);
 186
 187                         smtc_mmiowb(VGAMode[j].Init_MISC, 0x3c2);
 188
 189                         /* init SEQ register SR00 - SR04 */
 190                         for (i = 0; i < SIZE_SR00_SR04; i++)
 191                                 smtc_seqw(i, VGAMode[j].Init_SR00_SR04[i]);
 192
 193                         /* init SEQ register SR10 - SR24 */
 194                         for (i = 0; i < SIZE_SR10_SR24; i++)
 195                                 smtc_seqw(i + 0x10,
 196                                           VGAMode[j].Init_SR10_SR24[i]);
 197
 198                         /* init SEQ register SR30 - SR75 */
 199                         for (i = 0; i < SIZE_SR30_SR75; i++)
 200                                 if (((i + 0x30) != 0x62) \
 201                                         && ((i + 0x30) != 0x6a) \
 202                                         && ((i + 0x30) != 0x6b))
 203                                         smtc_seqw(i + 0x30,
 204                                                 VGAMode[j].Init_SR30_SR75[i]);
 205
 206                         /* init SEQ register SR80 - SR93 */
 207                         for (i = 0; i < SIZE_SR80_SR93; i++)
 208                                 smtc_seqw(i + 0x80,
 209                                           VGAMode[j].Init_SR80_SR93[i]);
 210
 211                         /* init SEQ register SRA0 - SRAF */
 212                         for (i = 0; i < SIZE_SRA0_SRAF; i++)
 213                                 smtc_seqw(i + 0xa0,
 214                                           VGAMode[j].Init_SRA0_SRAF[i]);
 215
 216                         /* init Graphic register GR00 - GR08 */
 217                         for (i = 0; i < SIZE_GR00_GR08; i++)
 218                                 smtc_grphw(i, VGAMode[j].Init_GR00_GR08[i]);
 219
 220                         /* init Attribute register AR00 - AR14 */
 221                         for (i = 0; i < SIZE_AR00_AR14; i++)
 222                                 smtc_attrw(i, VGAMode[j].Init_AR00_AR14[i]);
 223
 224                         /* init CRTC register CR00 - CR18 */
 225                         for (i = 0; i < SIZE_CR00_CR18; i++)
 226                                 smtc_crtcw(i, VGAMode[j].Init_CR00_CR18[i]);
 227
 228                         /* init CRTC register CR30 - CR4D */
 229                         for (i = 0; i < SIZE_CR30_CR4D; i++)
 230                                 smtc_crtcw(i + 0x30,
 231                                            VGAMode[j].Init_CR30_CR4D[i]);
 232
 233                         /* init CRTC register CR90 - CRA7 */
 234                         for (i = 0; i < SIZE_CR90_CRA7; i++)
 235                                 smtc_crtcw(i + 0x90,
 236                                            VGAMode[j].Init_CR90_CRA7[i]);
 237                 }
 238         }
 239         smtc_mmiowb(0x67, 0x3c2);
 240
 241         /* set VPR registers */
 242         writel(0x0, ppar_info->m_pVPR + 0x0C);
 243         writel(0x0, ppar_info->m_pVPR + 0x40);
 244
 245         /* set data width */
 246         m_nScreenStride =
 247                 (ppar_info->width * sfb->fb.var.bits_per_pixel) / 64;
 248         switch (sfb->fb.var.bits_per_pixel) {
 249         case 8:
 250                 writel(0x0, ppar_info->m_pVPR + 0x0);
 251                 break;
 252         case 16:
 253                 writel(0x00020000, ppar_info->m_pVPR + 0x0);
 254                 break;
 255         case 24:
 256                 writel(0x00040000, ppar_info->m_pVPR + 0x0);
 257                 break;
 258         case 32:
 259                 writel(0x00030000, ppar_info->m_pVPR + 0x0);
 260                 break;
 261         }
 262         writel((u32) (((m_nScreenStride + 2) << 16) | m_nScreenStride),
 263                ppar_info->m_pVPR + 0x10);
 264
 265 }
 266
 267 static void sm712_setpalette(int regno, unsigned red, unsigned green,
 268                              unsigned blue, struct fb_info *info)
 269 {
 270         struct par_info *cur_par = (struct par_info *)info->par;
 271
 272         if (cur_par->BaseAddressInVRAM)
 273                 /*
 274                  * second display palette for dual head. Enable CRT RAM, 6-bit
 275                  * RAM
 276                  */
 277                 smtc_seqw(0x66, (smtc_seqr(0x66) & 0xC3) | 0x20);
 278         else
 279                 /* primary display palette. Enable LCD RAM only, 6-bit RAM */
 280                 smtc_seqw(0x66, (smtc_seqr(0x66) & 0xC3) | 0x10);
 281         smtc_mmiowb(regno, dac_reg);
 282         smtc_mmiowb(red >> 10, dac_val);
 283         smtc_mmiowb(green >> 10, dac_val);
 284         smtc_mmiowb(blue >> 10, dac_val);
 285 }
 286
 287 static void smtc_set_timing(struct smtcfb_info *sfb, struct par_info
 288                 *ppar_info)
 289 {
 290         switch (ppar_info->chipID) {
 291         case 0x710:
 292         case 0x712:
 293         case 0x720:
 294                 sm712_set_timing(sfb, ppar_info);
 295                 break;
 296         }
 297 }
 298
 299 /* chan_to_field
 300  *
 301  * convert a colour value into a field position
 302  *
 303  * from pxafb.c
 304  */
 305
 306 static inline unsigned int chan_to_field(unsigned int chan,
 307                                          struct fb_bitfield *bf)
 308 {
 309         chan &= 0xffff;
 310         chan >>= 16 - bf->length;
 311         return chan << bf->offset;
 312 }
 313
 314 static int cfb_blank(int blank_mode, struct fb_info *info)
 315 {
 316         /* clear DPMS setting */
 317         switch (blank_mode) {
 318         case FB_BLANK_UNBLANK:
 319                 /* Screen On: HSync: On, VSync : On */
 320                 smtc_seqw(0x01, (smtc_seqr(0x01) & (~0x20)));
 321                 smtc_seqw(0x6a, 0x16);
 322                 smtc_seqw(0x6b, 0x02);
 323                 smtc_seqw(0x21, (smtc_seqr(0x21) & 0x77));
 324                 smtc_seqw(0x22, (smtc_seqr(0x22) & (~0x30)));
 325                 smtc_seqw(0x23, (smtc_seqr(0x23) & (~0xc0)));
 326                 smtc_seqw(0x24, (smtc_seqr(0x24) | 0x01));
 327                 smtc_seqw(0x31, (smtc_seqr(0x31) | 0x03));
 328                 break;
 329         case FB_BLANK_NORMAL:
 330                 /* Screen Off: HSync: On, VSync : On   Soft blank */
 331                 smtc_seqw(0x01, (smtc_seqr(0x01) & (~0x20)));
 332                 smtc_seqw(0x6a, 0x16);
 333                 smtc_seqw(0x6b, 0x02);
 334                 smtc_seqw(0x22, (smtc_seqr(0x22) & (~0x30)));
 335                 smtc_seqw(0x23, (smtc_seqr(0x23) & (~0xc0)));
 336                 smtc_seqw(0x24, (smtc_seqr(0x24) | 0x01));
 337                 smtc_seqw(0x31, ((smtc_seqr(0x31) & (~0x07)) | 0x00));
 338                 break;
 339         case FB_BLANK_VSYNC_SUSPEND:
 340                 /* Screen On: HSync: On, VSync : Off */
 341                 smtc_seqw(0x01, (smtc_seqr(0x01) | 0x20));
 342                 smtc_seqw(0x20, (smtc_seqr(0x20) & (~0xB0)));
 343                 smtc_seqw(0x6a, 0x0c);
 344                 smtc_seqw(0x6b, 0x02);
 345                 smtc_seqw(0x21, (smtc_seqr(0x21) | 0x88));
 346                 smtc_seqw(0x22, ((smtc_seqr(0x22) & (~0x30)) | 0x20));
 347                 smtc_seqw(0x23, ((smtc_seqr(0x23) & (~0xc0)) | 0x20));
 348                 smtc_seqw(0x24, (smtc_seqr(0x24) & (~0x01)));
 349                 smtc_seqw(0x31, ((smtc_seqr(0x31) & (~0x07)) | 0x00));
 350                 smtc_seqw(0x34, (smtc_seqr(0x34) | 0x80));
 351                 break;
 352         case FB_BLANK_HSYNC_SUSPEND:
 353                 /* Screen On: HSync: Off, VSync : On */
 354                 smtc_seqw(0x01, (smtc_seqr(0x01) | 0x20));
 355                 smtc_seqw(0x20, (smtc_seqr(0x20) & (~0xB0)));
 356                 smtc_seqw(0x6a, 0x0c);
 357                 smtc_seqw(0x6b, 0x02);
 358                 smtc_seqw(0x21, (smtc_seqr(0x21) | 0x88));
 359                 smtc_seqw(0x22, ((smtc_seqr(0x22) & (~0x30)) | 0x10));
 360                 smtc_seqw(0x23, ((smtc_seqr(0x23) & (~0xc0)) | 0xD8));
 361                 smtc_seqw(0x24, (smtc_seqr(0x24) & (~0x01)));
 362                 smtc_seqw(0x31, ((smtc_seqr(0x31) & (~0x07)) | 0x00));
 363                 smtc_seqw(0x34, (smtc_seqr(0x34) | 0x80));
 364                 break;
 365         case FB_BLANK_POWERDOWN:
 366                 /* Screen On: HSync: Off, VSync : Off */
 367                 smtc_seqw(0x01, (smtc_seqr(0x01) | 0x20));
 368                 smtc_seqw(0x20, (smtc_seqr(0x20) & (~0xB0)));
 369                 smtc_seqw(0x6a, 0x0c);
 370                 smtc_seqw(0x6b, 0x02);
 371                 smtc_seqw(0x21, (smtc_seqr(0x21) | 0x88));
 372                 smtc_seqw(0x22, ((smtc_seqr(0x22) & (~0x30)) | 0x30));
 373                 smtc_seqw(0x23, ((smtc_seqr(0x23) & (~0xc0)) | 0xD8));
 374                 smtc_seqw(0x24, (smtc_seqr(0x24) & (~0x01)));
 375                 smtc_seqw(0x31, ((smtc_seqr(0x31) & (~0x07)) | 0x00));
 376                 smtc_seqw(0x34, (smtc_seqr(0x34) | 0x80));
 377                 break;
 378         default:
 379                 return -EINVAL;
 380         }
 381
 382         return 0;
 383 }
 384
 385 static int smtc_setcolreg(unsigned regno, unsigned red, unsigned green,
 386                           unsigned blue, unsigned trans, struct fb_info *info)
 387 {
 388         struct smtcfb_info *sfb = (struct smtcfb_info *)info;
 389         u32 val;
 390
 391         if (regno > 255)
 392                 return 1;
 393
 394         switch (sfb->fb.fix.visual) {
 395         case FB_VISUAL_DIRECTCOLOR:
 396         case FB_VISUAL_TRUECOLOR:
 397                 /*
 398                  * 16/32 bit true-colour, use pseuo-palette for 16 base color
 399                  */
 400                 if (regno < 16) {
 401                         if (sfb->fb.var.bits_per_pixel == 16) {
 402                                 u32 *pal = sfb->fb.pseudo_palette;
 403                                 val = chan_to_field(red, &sfb->fb.var.red);
 404                                 val |= chan_to_field(green, \
 405                                                 &sfb->fb.var.green);
 406                                 val |= chan_to_field(blue, &sfb->fb.var.blue);
 407 #ifdef __BIG_ENDIAN
 408                                 pal[regno] =
 409                                     ((red & 0xf800) >> 8) |
 410                                     ((green & 0xe000) >> 13) |
 411                                     ((green & 0x1c00) << 3) |
 412                                     ((blue & 0xf800) >> 3);
 413 #else
 414                                 pal[regno] = val;
 415 #endif
 416                         } else {
 417                                 u32 *pal = sfb->fb.pseudo_palette;
 418                                 val = chan_to_field(red, &sfb->fb.var.red);
 419                                 val |= chan_to_field(green, \
 420                                                 &sfb->fb.var.green);
 421                                 val |= chan_to_field(blue, &sfb->fb.var.blue);
 422 #ifdef __BIG_ENDIAN
 423                                 val =
 424                                     (val & 0xff00ff00 >> 8) |
 425                                     (val & 0x00ff00ff << 8);
 426 #endif
 427                                 pal[regno] = val;
 428                         }
 429                 }
 430                 break;
 431
 432         case FB_VISUAL_PSEUDOCOLOR:
 433                 /* color depth 8 bit */
 434                 sm712_setpalette(regno, red, green, blue, info);
 435                 break;
 436
 437         default:
 438                 return 1;       /* unknown type */
 439         }
 440
 441         return 0;
 442
 443 }
 444
 445 #ifdef __BIG_ENDIAN
 446 static ssize_t smtcfb_read(struct fb_info *info, char __user * buf, size_t
 447                                 count, loff_t *ppos)
 448 {
 449         unsigned long p = *ppos;
 450
 451         u32 *buffer, *dst;
 452         u32 __iomem *src;
 453         int c, i, cnt = 0, err = 0;
 454         unsigned long total_size;
 455
 456         if (!info || !info->screen_base)
 457                 return -ENODEV;
 458
 459         if (info->state != FBINFO_STATE_RUNNING)
 460                 return -EPERM;
 461
 462         total_size = info->screen_size;
 463
 464         if (total_size == 0)
 465                 total_size = info->fix.smem_len;
 466
 467         if (p >= total_size)
 468                 return 0;
 469
 470         if (count >= total_size)
 471                 count = total_size;
 472
 473         if (count + p > total_size)
 474                 count = total_size - p;
 475
 476         buffer = kmalloc((count > PAGE_SIZE) ? PAGE_SIZE : count, GFP_KERNEL);
 477         if (!buffer)
 478                 return -ENOMEM;
 479
 480         src = (u32 __iomem *) (info->screen_base + p);
 481
 482         if (info->fbops->fb_sync)
 483                 info->fbops->fb_sync(info);
 484
 485         while (count) {
 486                 c = (count > PAGE_SIZE) ? PAGE_SIZE : count;
 487                 dst = buffer;
 488                 for (i = c >> 2; i--;) {
 489                         *dst = fb_readl(src++);
 490                         *dst =
 491                             (*dst & 0xff00ff00 >> 8) |
 492                             (*dst & 0x00ff00ff << 8);
 493                         dst++;
 494                 }
 495                 if (c & 3) {
 496                         u8 *dst8 = (u8 *) dst;
 497                         u8 __iomem *src8 = (u8 __iomem *) src;
 498
 499                         for (i = c & 3; i--;) {
 500                                 if (i & 1) {
 501                                         *dst8++ = fb_readb(++src8);
 502                                 } else {
 503                                         *dst8++ = fb_readb(--src8);
 504                                         src8 += 2;
 505                                 }
 506                         }
 507                         src = (u32 __iomem *) src8;
 508                 }
 509
 510                 if (copy_to_user(buf, buffer, c)) {
 511                         err = -EFAULT;
 512                         break;
 513                 }
 514                 *ppos += c;
 515                 buf += c;
 516                 cnt += c;
 517                 count -= c;
 518         }
 519
 520         kfree(buffer);
 521
 522         return (err) ? err : cnt;
 523 }
 524
 525 static ssize_t
 526 smtcfb_write(struct fb_info *info, const char __user *buf, size_t count,
 527              loff_t *ppos)
 528 {
 529         unsigned long p = *ppos;
 530
 531         u32 *buffer, *src;
 532         u32 __iomem *dst;
 533         int c, i, cnt = 0, err = 0;
 534         unsigned long total_size;
 535
 536         if (!info || !info->screen_base)
 537                 return -ENODEV;
 538
 539         if (info->state != FBINFO_STATE_RUNNING)
 540                 return -EPERM;
 541
 542         total_size = info->screen_size;
 543
 544         if (total_size == 0)
 545                 total_size = info->fix.smem_len;
 546
 547         if (p > total_size)
 548                 return -EFBIG;
 549
 550         if (count > total_size) {
 551                 err = -EFBIG;
 552                 count = total_size;
 553         }
 554
 555         if (count + p > total_size) {
 556                 if (!err)
 557                         err = -ENOSPC;
 558
 559                 count = total_size - p;
 560         }
 561
 562         buffer = kmalloc((count > PAGE_SIZE) ? PAGE_SIZE : count, GFP_KERNEL);
 563         if (!buffer)
 564                 return -ENOMEM;
 565
 566         dst = (u32 __iomem *) (info->screen_base + p);
 567
 568         if (info->fbops->fb_sync)
 569                 info->fbops->fb_sync(info);
 570
 571         while (count) {
 572                 c = (count > PAGE_SIZE) ? PAGE_SIZE : count;
 573                 src = buffer;
 574
 575                 if (copy_from_user(src, buf, c)) {
 576                         err = -EFAULT;
 577                         break;
 578                 }
 579
 580                 for (i = c >> 2; i--;) {
 581                         fb_writel((*src & 0xff00ff00 >> 8) |
 582                                   (*src & 0x00ff00ff << 8), dst++);
 583                         src++;
 584                 }
 585                 if (c & 3) {
 586                         u8 *src8 = (u8 *) src;
 587                         u8 __iomem *dst8 = (u8 __iomem *) dst;
 588
 589                         for (i = c & 3; i--;) {
 590                                 if (i & 1) {
 591                                         fb_writeb(*src8++, ++dst8);
 592                                 } else {
 593                                         fb_writeb(*src8++, --dst8);
 594                                         dst8 += 2;
 595                                 }
 596                         }
 597                         dst = (u32 __iomem *) dst8;
 598                 }
 599
 600                 *ppos += c;
 601                 buf += c;
 602                 cnt += c;
 603                 count -= c;
 604         }
 605
 606         kfree(buffer);
 607
 608         return (cnt) ? cnt : err;
 609 }
 610 #endif  /* ! __BIG_ENDIAN */
 611
 612 void smtcfb_setmode(struct smtcfb_info *sfb)
 613 {
 614         switch (sfb->fb.var.bits_per_pixel) {
 615         case 32:
 616                 sfb->fb.fix.visual = FB_VISUAL_TRUECOLOR;
 617                 sfb->fb.fix.line_length = sfb->fb.var.xres * 4;
 618                 sfb->fb.var.red.length = 8;
 619                 sfb->fb.var.green.length = 8;
 620                 sfb->fb.var.blue.length = 8;
 621                 sfb->fb.var.red.offset = 16;
 622                 sfb->fb.var.green.offset = 8;
 623                 sfb->fb.var.blue.offset = 0;
 624
 625                 break;
 626         case 8:
 627                 sfb->fb.fix.visual = FB_VISUAL_PSEUDOCOLOR;
 628                 sfb->fb.fix.line_length = sfb->fb.var.xres;
 629                 sfb->fb.var.red.offset = 5;
 630                 sfb->fb.var.red.length = 3;
 631                 sfb->fb.var.green.offset = 2;
 632                 sfb->fb.var.green.length = 3;
 633                 sfb->fb.var.blue.offset = 0;
 634                 sfb->fb.var.blue.length = 2;
 635                 break;
 636         case 24:
 637                 sfb->fb.fix.visual = FB_VISUAL_TRUECOLOR;
 638                 sfb->fb.fix.line_length = sfb->fb.var.xres * 3;
 639                 sfb->fb.var.red.length = 8;
 640                 sfb->fb.var.green.length = 8;
 641                 sfb->fb.var.blue.length = 8;
 642
 643                 sfb->fb.var.red.offset = 16;
 644                 sfb->fb.var.green.offset = 8;
 645                 sfb->fb.var.blue.offset = 0;
 646
 647                 break;
 648         case 16:
 649         default:
 650                 sfb->fb.fix.visual = FB_VISUAL_TRUECOLOR;
 651                 sfb->fb.fix.line_length = sfb->fb.var.xres * 2;
 652
 653                 sfb->fb.var.red.length = 5;
 654                 sfb->fb.var.green.length = 6;
 655                 sfb->fb.var.blue.length = 5;
 656
 657                 sfb->fb.var.red.offset = 11;
 658                 sfb->fb.var.green.offset = 5;
 659                 sfb->fb.var.blue.offset = 0;
 660
 661                 break;
 662         }
 663
 664         hw.width = sfb->fb.var.xres;
 665         hw.height = sfb->fb.var.yres;
 666         hw.hz = 60;
 667         smtc_set_timing(sfb, &hw);
 668 }
 669
 670 static int smtc_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
 671 {
 672         /* sanity checks */
 673         if (var->xres_virtual < var->xres)
 674                 var->xres_virtual = var->xres;
 675
 676         if (var->yres_virtual < var->yres)
 677                 var->yres_virtual = var->yres;
 678
 679         /* set valid default bpp */
 680         if ((var->bits_per_pixel != 8)  && (var->bits_per_pixel != 16) &&
 681             (var->bits_per_pixel != 24) && (var->bits_per_pixel != 32))
 682                 var->bits_per_pixel = 16;
 683
 684         return 0;
 685 }
 686
 687 static int smtc_set_par(struct fb_info *info)
 688 {
 689         struct smtcfb_info *sfb = (struct smtcfb_info *)info;
 690
 691         smtcfb_setmode(sfb);
 692
 693         return 0;
 694 }
 695
 696 static struct fb_ops smtcfb_ops = {
 697         .owner        = THIS_MODULE,
 698         .fb_check_var = smtc_check_var,
 699         .fb_set_par   = smtc_set_par,
 700         .fb_setcolreg = smtc_setcolreg,
 701         .fb_blank     = cfb_blank,
 702         .fb_fillrect  = cfb_fillrect,
 703         .fb_imageblit = cfb_imageblit,
 704         .fb_copyarea  = cfb_copyarea,
 705 #ifdef __BIG_ENDIAN
 706         .fb_read      = smtcfb_read,
 707         .fb_write     = smtcfb_write,
 708 #endif
 709 };
 710
 711 /*
 712  * Alloc struct smtcfb_info and assign the default value
 713  */
 714 static struct smtcfb_info *smtc_alloc_fb_info(struct pci_dev *dev,
 715                                                         char *name)
 716 {
 717         struct smtcfb_info *sfb;
 718
 719         sfb = kzalloc(sizeof(*sfb), GFP_KERNEL);
 720
 721         if (!sfb)
 722                 return NULL;
 723
 724         sfb->currcon = -1;
 725         sfb->dev = dev;
 726
 727         /*** Init sfb->fb with default value ***/
 728         sfb->fb.flags = FBINFO_FLAG_DEFAULT;
 729         sfb->fb.fbops = &smtcfb_ops;
 730         sfb->fb.var = smtcfb_var;
 731         sfb->fb.fix = smtcfb_fix;
 732
 733         strcpy(sfb->fb.fix.id, name);
 734
 735         sfb->fb.fix.type = FB_TYPE_PACKED_PIXELS;
 736         sfb->fb.fix.type_aux = 0;
 737         sfb->fb.fix.xpanstep = 0;
 738         sfb->fb.fix.ypanstep = 0;
 739         sfb->fb.fix.ywrapstep = 0;
 740         sfb->fb.fix.accel = FB_ACCEL_SMI_LYNX;
 741
 742         sfb->fb.var.nonstd = 0;
 743         sfb->fb.var.activate = FB_ACTIVATE_NOW;
 744         sfb->fb.var.height = -1;
 745         sfb->fb.var.width = -1;
 746         /* text mode acceleration */
 747         sfb->fb.var.accel_flags = FB_ACCELF_TEXT;
 748         sfb->fb.var.vmode = FB_VMODE_NONINTERLACED;
 749         sfb->fb.par = &hw;
 750         sfb->fb.pseudo_palette = colreg;
 751
 752         return sfb;
 753 }
 754
 755 /*
 756  * Unmap in the memory mapped IO registers
 757  */
 758
 759 static void smtc_unmap_mmio(struct smtcfb_info *sfb)
 760 {
 761         if (sfb && smtc_RegBaseAddress)
 762                 smtc_RegBaseAddress = NULL;
 763 }
 764
 765 /*
 766  * Map in the screen memory
 767  */
 768
 769 static int smtc_map_smem(struct smtcfb_info *sfb,
 770                 struct pci_dev *dev, u_long smem_len)
 771 {
 772         if (sfb->fb.var.bits_per_pixel == 32) {
 773 #ifdef __BIG_ENDIAN
 774                 sfb->fb.fix.smem_start = pci_resource_start(dev, 0)
 775                         + 0x800000;
 776 #else
 777                 sfb->fb.fix.smem_start = pci_resource_start(dev, 0);
 778 #endif
 779         } else {
 780                 sfb->fb.fix.smem_start = pci_resource_start(dev, 0);
 781         }
 782
 783         sfb->fb.fix.smem_len = smem_len;
 784
 785         sfb->fb.screen_base = smtc_VRAMBaseAddress;
 786
 787         if (!sfb->fb.screen_base) {
 788                 printk(KERN_ERR "%s: unable to map screen memory\n",
 789                                 sfb->fb.fix.id);
 790                 return -ENOMEM;
 791         }
 792
 793         return 0;
 794 }
 795
 796 /*
 797  * Unmap in the screen memory
 798  *
 799  */
 800 static void smtc_unmap_smem(struct smtcfb_info *sfb)
 801 {
 802         if (sfb && sfb->fb.screen_base) {
 803                 iounmap(sfb->fb.screen_base);
 804                 sfb->fb.screen_base = NULL;
 805         }
 806 }
 807
 808 /*
 809  * We need to wake up the LynxEM+, and make sure its in linear memory mode.
 810  */
 811 static inline void sm7xx_init_hw(void)
 812 {
 813         outb_p(0x18, 0x3c4);
 814         outb_p(0x11, 0x3c5);
 815 }
 816
 817 static void smtc_free_fb_info(struct smtcfb_info *sfb)
 818 {
 819         if (sfb) {
 820                 fb_alloc_cmap(&sfb->fb.cmap, 0, 0);
 821                 kfree(sfb);
 822         }
 823 }
 824
 825 /*
 826  *      sm712vga_setup - process command line options, get vga parameter
 827  *      @options: string of options
 828  *      Returns zero.
 829  *
 830  */
 831 static int __init sm712vga_setup(char *options)
 832 {
 833         int index;
 834
 835         if (!options || !*options) {
 836                 smdbg("\n No vga parameter\n");
 837                 return -EINVAL;
 838         }
 839
 840         smtc_screen_info.lfb_width = 0;
 841         smtc_screen_info.lfb_height = 0;
 842         smtc_screen_info.lfb_depth = 0;
 843
 844         smdbg("\nsm712vga_setup = %s\n", options);
 845
 846         for (index = 0;
 847              index < ARRAY_SIZE(vesa_mode);
 848              index++) {
 849                 if (strstr(options, vesa_mode[index].mode_index)) {
 850                         smtc_screen_info.lfb_width = vesa_mode[index].lfb_width;
 851                         smtc_screen_info.lfb_height =
 852                                         vesa_mode[index].lfb_height;
 853                         smtc_screen_info.lfb_depth = vesa_mode[index].lfb_depth;
 854                         return 0;
 855                 }
 856         }
 857
 858         return -1;
 859 }
 860 __setup("vga=", sm712vga_setup);
 861
 862 /* Jason (08/13/2009)
 863  * Original init function changed to probe method to be used by pci_drv
 864  * process used to detect chips replaced with kernel process in pci_drv
 865  */
 866 static int __devinit smtcfb_pci_probe(struct pci_dev *pdev,
 867                                    const struct pci_device_id *ent)
 868 {
 869         struct smtcfb_info *sfb;
 870         u_long smem_size = 0x00800000;  /* default 8MB */
 871         char name[16];
 872         int err;
 873         unsigned long pFramebufferPhysical;
 874
 875         printk(KERN_INFO
 876                 "Silicon Motion display driver " SMTC_LINUX_FB_VERSION "\n");
 877
 878         err = pci_enable_device(pdev);  /* enable SMTC chip */
 879         if (err)
 880                 return err;
 881
 882         hw.chipID = ent->device;
 883         sprintf(name, "sm%Xfb", hw.chipID);
 884
 885         sfb = smtc_alloc_fb_info(pdev, name);
 886
 887         if (!sfb)
 888                 goto failed_free;
 889         /* Jason (08/13/2009)
 890          * Store fb_info to be further used when suspending and resuming
 891          */
 892         pci_set_drvdata(pdev, sfb);
 893
 894         sm7xx_init_hw();
 895
 896         /*get mode parameter from smtc_screen_info */
 897         if (smtc_screen_info.lfb_width != 0) {
 898                 sfb->fb.var.xres = smtc_screen_info.lfb_width;
 899                 sfb->fb.var.yres = smtc_screen_info.lfb_height;
 900                 sfb->fb.var.bits_per_pixel = smtc_screen_info.lfb_depth;
 901         } else {
 902                 /* default resolution 1024x600 16bit mode */
 903                 sfb->fb.var.xres = SCREEN_X_RES;
 904                 sfb->fb.var.yres = SCREEN_Y_RES;
 905                 sfb->fb.var.bits_per_pixel = SCREEN_BPP;
 906         }
 907
 908 #ifdef __BIG_ENDIAN
 909         if (sfb->fb.var.bits_per_pixel == 24)
 910                 sfb->fb.var.bits_per_pixel = (smtc_screen_info.lfb_depth = 32);
 911 #endif
 912         /* Map address and memory detection */
 913         pFramebufferPhysical = pci_resource_start(pdev, 0);
 914         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw.chipRevID);
 915
 916         switch (hw.chipID) {
 917         case 0x710:
 918         case 0x712:
 919                 sfb->fb.fix.mmio_start = pFramebufferPhysical + 0x00400000;
 920                 sfb->fb.fix.mmio_len = 0x00400000;
 921                 smem_size = SM712_VIDEOMEMORYSIZE;
 922 #ifdef __BIG_ENDIAN
 923                 hw.m_pLFB = (smtc_VRAMBaseAddress =
 924                     ioremap(pFramebufferPhysical, 0x00c00000));
 925 #else
 926                 hw.m_pLFB = (smtc_VRAMBaseAddress =
 927                     ioremap(pFramebufferPhysical, 0x00800000));
 928 #endif
 929                 hw.m_pMMIO = (smtc_RegBaseAddress =
 930                     smtc_VRAMBaseAddress + 0x00700000);
 931                 hw.m_pDPR = smtc_VRAMBaseAddress + 0x00408000;
 932                 hw.m_pVPR = hw.m_pLFB + 0x0040c000;
 933 #ifdef __BIG_ENDIAN
 934                 if (sfb->fb.var.bits_per_pixel == 32) {
 935                         smtc_VRAMBaseAddress += 0x800000;
 936                         hw.m_pLFB += 0x800000;
 937                         printk(KERN_INFO
 938                                 "\nsmtc_VRAMBaseAddress=%p hw.m_pLFB=%p\n",
 939                                         smtc_VRAMBaseAddress, hw.m_pLFB);
 940                 }
 941 #endif
 942                 if (!smtc_RegBaseAddress) {
 943                         printk(KERN_ERR
 944                                 "%s: unable to map memory mapped IO\n",
 945                                 sfb->fb.fix.id);
 946                         err = -ENOMEM;
 947                         goto failed_fb;
 948                 }
 949
 950                 /* set MCLK = 14.31818 * (0x16 / 0x2) */
 951                 smtc_seqw(0x6a, 0x16);
 952                 smtc_seqw(0x6b, 0x02);
 953                 smtc_seqw(0x62, 0x3e);
 954                 /* enable PCI burst */
 955                 smtc_seqw(0x17, 0x20);
 956                 /* enable word swap */
 957 #ifdef __BIG_ENDIAN
 958                 if (sfb->fb.var.bits_per_pixel == 32)
 959                         smtc_seqw(0x17, 0x30);
 960 #endif
 961                 break;
 962         case 0x720:
 963                 sfb->fb.fix.mmio_start = pFramebufferPhysical;
 964                 sfb->fb.fix.mmio_len = 0x00200000;
 965                 smem_size = SM722_VIDEOMEMORYSIZE;
 966                 hw.m_pDPR = ioremap(pFramebufferPhysical, 0x00a00000);
 967                 hw.m_pLFB = (smtc_VRAMBaseAddress =
 968                     hw.m_pDPR + 0x00200000);
 969                 hw.m_pMMIO = (smtc_RegBaseAddress =
 970                     hw.m_pDPR + 0x000c0000);
 971                 hw.m_pVPR = hw.m_pDPR + 0x800;
 972
 973                 smtc_seqw(0x62, 0xff);
 974                 smtc_seqw(0x6a, 0x0d);
 975                 smtc_seqw(0x6b, 0x02);
 976                 break;
 977         default:
 978                 printk(KERN_ERR
 979                 "No valid Silicon Motion display chip was detected!\n");
 980
 981                 goto failed_fb;
 982         }
 983
 984         /* can support 32 bpp */
 985         if (15 == sfb->fb.var.bits_per_pixel)
 986                 sfb->fb.var.bits_per_pixel = 16;
 987
 988         sfb->fb.var.xres_virtual = sfb->fb.var.xres;
 989         sfb->fb.var.yres_virtual = sfb->fb.var.yres;
 990         err = smtc_map_smem(sfb, pdev, smem_size);
 991         if (err)
 992                 goto failed;
 993
 994         smtcfb_setmode(sfb);
 995         /* Primary display starting from 0 position */
 996         hw.BaseAddressInVRAM = 0;
 997         sfb->fb.par = &hw;
 998
 999         err = register_framebuffer(&sfb->fb);
1000         if (err < 0)
1001                 goto failed;
1002
1003         printk(KERN_INFO "Silicon Motion SM%X Rev%X primary display mode"
1004                         "%dx%d-%d Init Complete.\n", hw.chipID, hw.chipRevID,
1005                         sfb->fb.var.xres, sfb->fb.var.yres,
1006                         sfb->fb.var.bits_per_pixel);
1007
1008         return 0;
1009
1010 failed:
1011         printk(KERN_ERR "Silicon Motion, Inc.  primary display init fail\n");
1012
1013         smtc_unmap_smem(sfb);
1014         smtc_unmap_mmio(sfb);
1015 failed_fb:
1016         smtc_free_fb_info(sfb);
1017
1018 failed_free:
1019         pci_disable_device(pdev);
1020
1021         return err;
1022 }
1023
1024
1025 /* Jason (08/11/2009) PCI_DRV wrapper essential structs */
1026 static DEFINE_PCI_DEVICE_TABLE(smtcfb_pci_table) = {
1027         { PCI_DEVICE(0x126f, 0x710), },
1028         { PCI_DEVICE(0x126f, 0x712), },
1029         { PCI_DEVICE(0x126f, 0x720), },
1030         {0,}
1031 };
1032
1033
1034 /* Jason (08/14/2009)
1035  * do some clean up when the driver module is removed
1036  */
1037 static void __devexit smtcfb_pci_remove(struct pci_dev *pdev)
1038 {
1039         struct smtcfb_info *sfb;
1040
1041         sfb = pci_get_drvdata(pdev);
1042         pci_set_drvdata(pdev, NULL);
1043         smtc_unmap_smem(sfb);
1044         smtc_unmap_mmio(sfb);
1045         unregister_framebuffer(&sfb->fb);
1046         smtc_free_fb_info(sfb);
1047 }
1048
1049 #ifdef CONFIG_PM
1050 static int smtcfb_pci_suspend(struct device *device)
1051 {
1052         struct pci_dev *pdev = to_pci_dev(device);
1053         struct smtcfb_info *sfb;
1054
1055         sfb = pci_get_drvdata(pdev);
1056
1057         /* set the hw in sleep mode use externel clock and self memory refresh
1058          * so that we can turn off internal PLLs later on
1059          */
1060         smtc_seqw(0x20, (smtc_seqr(0x20) | 0xc0));
1061         smtc_seqw(0x69, (smtc_seqr(0x69) & 0xf7));
1062
1063         console_lock();
1064         fb_set_suspend(&sfb->fb, 1);
1065         console_unlock();
1066
1067         /* additionally turn off all function blocks including internal PLLs */
1068         smtc_seqw(0x21, 0xff);
1069
1070         return 0;
1071 }
1072
1073 static int smtcfb_pci_resume(struct device *device)
1074 {
1075         struct pci_dev *pdev = to_pci_dev(device);
1076         struct smtcfb_info *sfb;
1077
1078         sfb = pci_get_drvdata(pdev);
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 static const struct dev_pm_ops sm7xx_pm_ops = {
1116         .suspend = smtcfb_pci_suspend,
1117         .resume = smtcfb_pci_resume,
1118         .freeze = smtcfb_pci_suspend,
1119         .thaw = smtcfb_pci_resume,
1120         .poweroff = smtcfb_pci_suspend,
1121         .restore = smtcfb_pci_resume,
1122 };
1123
1124 #define SM7XX_PM_OPS (&sm7xx_pm_ops)
1125
1126 #else  /* !CONFIG_PM */
1127
1128 #define SM7XX_PM_OPS NULL
1129
1130 #endif /* !CONFIG_PM */
1131
1132 static struct pci_driver smtcfb_driver = {
1133         .name = "smtcfb",
1134         .id_table = smtcfb_pci_table,
1135         .probe = smtcfb_pci_probe,
1136         .remove = __devexit_p(smtcfb_pci_remove),
1137         .driver.pm  = SM7XX_PM_OPS,
1138 };
1139
1140 static int __init smtcfb_init(void)
1141 {
1142         return pci_register_driver(&smtcfb_driver);
1143 }
1144
1145 static void __exit smtcfb_exit(void)
1146 {
1147         pci_unregister_driver(&smtcfb_driver);
1148 }
1149
1150 module_init(smtcfb_init);
1151 module_exit(smtcfb_exit);
1152
1153 MODULE_AUTHOR("Siliconmotion ");
1154 MODULE_DESCRIPTION("Framebuffer driver for SMI Graphic Cards");
1155 MODULE_LICENSE("GPL");