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 #endif
  45
  46 #include "smtcfb.h"
  47
  48 #ifdef DEBUG
  49 #define smdbg(format, arg...) printk(KERN_DEBUG format , ## arg)
  50 #else
  51 #define smdbg(format, arg...)
  52 #endif
  53
  54 struct screen_info smtc_screen_info;
  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 ARRAY_SIZE(smtc_ChipIDs)
 133
 134 static struct fb_var_screeninfo smtcfb_var = {
 135         .xres           = 1024,
 136         .yres           = 600,
 137         .xres_virtual   = 1024,
 138         .yres_virtual   = 600,
 139         .bits_per_pixel = 16,
 140         .red            = {16, 8, 0},
 141         .green          = {8, 8, 0},
 142         .blue           = {0, 8, 0},
 143         .activate       = FB_ACTIVATE_NOW,
 144         .height         = -1,
 145         .width          = -1,
 146         .vmode          = FB_VMODE_NONINTERLACED,
 147 };
 148
 149 static struct fb_fix_screeninfo smtcfb_fix = {
 150         .id             = "sm712fb",
 151         .type           = FB_TYPE_PACKED_PIXELS,
 152         .visual         = FB_VISUAL_TRUECOLOR,
 153         .line_length    = 800 * 3,
 154         .accel          = FB_ACCEL_SMI_LYNX,
 155 };
 156
 157 static void sm712_set_timing(struct smtcfb_info *sfb,
 158                              struct par_info *ppar_info)
 159 {
 160         int i = 0, j = 0;
 161         u32 m_nScreenStride;
 162
 163         smdbg("\nppar_info->width = %d ppar_info->height = %d"
 164                         "sfb->fb.var.bits_per_pixel = %d ppar_info->hz = %d\n",
 165                         ppar_info->width, ppar_info->height,
 166                         sfb->fb.var.bits_per_pixel, ppar_info->hz);
 167
 168         for (j = 0; j < numVGAModes; j++) {
 169                 if (VGAMode[j].mmSizeX == ppar_info->width &&
 170                     VGAMode[j].mmSizeY == ppar_info->height &&
 171                     VGAMode[j].bpp == sfb->fb.var.bits_per_pixel &&
 172                     VGAMode[j].hz == ppar_info->hz) {
 173
 174                         smdbg("\nVGAMode[j].mmSizeX  = %d VGAMode[j].mmSizeY ="
 175                                         "%d VGAMode[j].bpp = %d"
 176                                         "VGAMode[j].hz=%d\n",
 177                                         VGAMode[j].mmSizeX, VGAMode[j].mmSizeY,
 178                                         VGAMode[j].bpp, VGAMode[j].hz);
 179
 180                         smdbg("VGAMode index=%d\n", j);
 181
 182                         smtc_mmiowb(0x0, 0x3c6);
 183
 184                         smtc_seqw(0, 0x1);
 185
 186                         smtc_mmiowb(VGAMode[j].Init_MISC, 0x3c2);
 187
 188                         /* init SEQ register SR00 - SR04 */
 189                         for (i = 0; i < SIZE_SR00_SR04; i++)
 190                                 smtc_seqw(i, VGAMode[j].Init_SR00_SR04[i]);
 191
 192                         /* init SEQ register SR10 - SR24 */
 193                         for (i = 0; i < SIZE_SR10_SR24; i++)
 194                                 smtc_seqw(i + 0x10,
 195                                           VGAMode[j].Init_SR10_SR24[i]);
 196
 197                         /* init SEQ register SR30 - SR75 */
 198                         for (i = 0; i < SIZE_SR30_SR75; i++)
 199                                 if (((i + 0x30) != 0x62) \
 200                                         && ((i + 0x30) != 0x6a) \
 201                                         && ((i + 0x30) != 0x6b))
 202                                         smtc_seqw(i + 0x30,
 203                                                 VGAMode[j].Init_SR30_SR75[i]);
 204
 205                         /* init SEQ register SR80 - SR93 */
 206                         for (i = 0; i < SIZE_SR80_SR93; i++)
 207                                 smtc_seqw(i + 0x80,
 208                                           VGAMode[j].Init_SR80_SR93[i]);
 209
 210                         /* init SEQ register SRA0 - SRAF */
 211                         for (i = 0; i < SIZE_SRA0_SRAF; i++)
 212                                 smtc_seqw(i + 0xa0,
 213                                           VGAMode[j].Init_SRA0_SRAF[i]);
 214
 215                         /* init Graphic register GR00 - GR08 */
 216                         for (i = 0; i < SIZE_GR00_GR08; i++)
 217                                 smtc_grphw(i, VGAMode[j].Init_GR00_GR08[i]);
 218
 219                         /* init Attribute register AR00 - AR14 */
 220                         for (i = 0; i < SIZE_AR00_AR14; i++)
 221                                 smtc_attrw(i, VGAMode[j].Init_AR00_AR14[i]);
 222
 223                         /* init CRTC register CR00 - CR18 */
 224                         for (i = 0; i < SIZE_CR00_CR18; i++)
 225                                 smtc_crtcw(i, VGAMode[j].Init_CR00_CR18[i]);
 226
 227                         /* init CRTC register CR30 - CR4D */
 228                         for (i = 0; i < SIZE_CR30_CR4D; i++)
 229                                 smtc_crtcw(i + 0x30,
 230                                            VGAMode[j].Init_CR30_CR4D[i]);
 231
 232                         /* init CRTC register CR90 - CRA7 */
 233                         for (i = 0; i < SIZE_CR90_CRA7; i++)
 234                                 smtc_crtcw(i + 0x90,
 235                                            VGAMode[j].Init_CR90_CRA7[i]);
 236                 }
 237         }
 238         smtc_mmiowb(0x67, 0x3c2);
 239
 240         /* set VPR registers */
 241         writel(0x0, ppar_info->m_pVPR + 0x0C);
 242         writel(0x0, ppar_info->m_pVPR + 0x40);
 243
 244         /* set data width */
 245         m_nScreenStride =
 246                 (ppar_info->width * sfb->fb.var.bits_per_pixel) / 64;
 247         switch (sfb->fb.var.bits_per_pixel) {
 248         case 8:
 249                 writel(0x0, ppar_info->m_pVPR + 0x0);
 250                 break;
 251         case 16:
 252                 writel(0x00020000, ppar_info->m_pVPR + 0x0);
 253                 break;
 254         case 24:
 255                 writel(0x00040000, ppar_info->m_pVPR + 0x0);
 256                 break;
 257         case 32:
 258                 writel(0x00030000, ppar_info->m_pVPR + 0x0);
 259                 break;
 260         }
 261         writel((u32) (((m_nScreenStride + 2) << 16) | m_nScreenStride),
 262                ppar_info->m_pVPR + 0x10);
 263
 264 }
 265
 266 static void sm712_setpalette(int regno, unsigned red, unsigned green,
 267                              unsigned blue, struct fb_info *info)
 268 {
 269         struct par_info *cur_par = (struct par_info *)info->par;
 270
 271         if (cur_par->BaseAddressInVRAM)
 272                 /*
 273                  * second display palette for dual head. Enable CRT RAM, 6-bit
 274                  * RAM
 275                  */
 276                 smtc_seqw(0x66, (smtc_seqr(0x66) & 0xC3) | 0x20);
 277         else
 278                 /* primary display palette. Enable LCD RAM only, 6-bit RAM */
 279                 smtc_seqw(0x66, (smtc_seqr(0x66) & 0xC3) | 0x10);
 280         smtc_mmiowb(regno, dac_reg);
 281         smtc_mmiowb(red >> 10, dac_val);
 282         smtc_mmiowb(green >> 10, dac_val);
 283         smtc_mmiowb(blue >> 10, dac_val);
 284 }
 285
 286 static void smtc_set_timing(struct smtcfb_info *sfb, struct par_info
 287                 *ppar_info)
 288 {
 289         switch (ppar_info->chipID) {
 290         case 0x710:
 291         case 0x712:
 292         case 0x720:
 293                 sm712_set_timing(sfb, ppar_info);
 294                 break;
 295         }
 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 void smtcfb_setmode(struct smtcfb_info *sfb)
 612 {
 613         switch (sfb->fb.var.bits_per_pixel) {
 614         case 32:
 615                 sfb->fb.fix.visual = FB_VISUAL_TRUECOLOR;
 616                 sfb->fb.fix.line_length = sfb->fb.var.xres * 4;
 617                 sfb->fb.var.red.length = 8;
 618                 sfb->fb.var.green.length = 8;
 619                 sfb->fb.var.blue.length = 8;
 620                 sfb->fb.var.red.offset = 16;
 621                 sfb->fb.var.green.offset = 8;
 622                 sfb->fb.var.blue.offset = 0;
 623
 624                 break;
 625         case 8:
 626                 sfb->fb.fix.visual = FB_VISUAL_PSEUDOCOLOR;
 627                 sfb->fb.fix.line_length = sfb->fb.var.xres;
 628                 sfb->fb.var.red.offset = 5;
 629                 sfb->fb.var.red.length = 3;
 630                 sfb->fb.var.green.offset = 2;
 631                 sfb->fb.var.green.length = 3;
 632                 sfb->fb.var.blue.offset = 0;
 633                 sfb->fb.var.blue.length = 2;
 634                 break;
 635         case 24:
 636                 sfb->fb.fix.visual = FB_VISUAL_TRUECOLOR;
 637                 sfb->fb.fix.line_length = sfb->fb.var.xres * 3;
 638                 sfb->fb.var.red.length = 8;
 639                 sfb->fb.var.green.length = 8;
 640                 sfb->fb.var.blue.length = 8;
 641
 642                 sfb->fb.var.red.offset = 16;
 643                 sfb->fb.var.green.offset = 8;
 644                 sfb->fb.var.blue.offset = 0;
 645
 646                 break;
 647         case 16:
 648         default:
 649                 sfb->fb.fix.visual = FB_VISUAL_TRUECOLOR;
 650                 sfb->fb.fix.line_length = sfb->fb.var.xres * 2;
 651
 652                 sfb->fb.var.red.length = 5;
 653                 sfb->fb.var.green.length = 6;
 654                 sfb->fb.var.blue.length = 5;
 655
 656                 sfb->fb.var.red.offset = 11;
 657                 sfb->fb.var.green.offset = 5;
 658                 sfb->fb.var.blue.offset = 0;
 659
 660                 break;
 661         }
 662
 663         hw.width = sfb->fb.var.xres;
 664         hw.height = sfb->fb.var.yres;
 665         hw.hz = 60;
 666         smtc_set_timing(sfb, &hw);
 667 }
 668
 669 static int smtc_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
 670 {
 671         /* sanity checks */
 672         if (var->xres_virtual < var->xres)
 673                 var->xres_virtual = var->xres;
 674
 675         if (var->yres_virtual < var->yres)
 676                 var->yres_virtual = var->yres;
 677
 678         /* set valid default bpp */
 679         if ((var->bits_per_pixel != 8)  && (var->bits_per_pixel != 16) &&
 680             (var->bits_per_pixel != 24) && (var->bits_per_pixel != 32))
 681                 var->bits_per_pixel = 16;
 682
 683         return 0;
 684 }
 685
 686 static int smtc_set_par(struct fb_info *info)
 687 {
 688         struct smtcfb_info *sfb = (struct smtcfb_info *)info;
 689
 690         smtcfb_setmode(sfb);
 691
 692         return 0;
 693 }
 694
 695 static struct fb_ops smtcfb_ops = {
 696         .owner        = THIS_MODULE,
 697         .fb_check_var = smtc_check_var,
 698         .fb_set_par   = smtc_set_par,
 699         .fb_setcolreg = smtc_setcolreg,
 700         .fb_blank     = cfb_blank,
 701         .fb_fillrect  = cfb_fillrect,
 702         .fb_imageblit = cfb_imageblit,
 703         .fb_copyarea  = cfb_copyarea,
 704 #ifdef __BIG_ENDIAN
 705         .fb_read      = smtcfb_read,
 706         .fb_write     = smtcfb_write,
 707 #endif
 708 };
 709
 710 /*
 711  * Alloc struct smtcfb_info and assign the default value
 712  */
 713 static struct smtcfb_info *smtc_alloc_fb_info(struct pci_dev *dev,
 714                                                         char *name)
 715 {
 716         struct smtcfb_info *sfb;
 717
 718         sfb = kzalloc(sizeof(*sfb), GFP_KERNEL);
 719
 720         if (!sfb)
 721                 return NULL;
 722
 723         sfb->currcon = -1;
 724         sfb->dev = dev;
 725
 726         /*** Init sfb->fb with default value ***/
 727         sfb->fb.flags = FBINFO_FLAG_DEFAULT;
 728         sfb->fb.fbops = &smtcfb_ops;
 729         sfb->fb.var = smtcfb_var;
 730         sfb->fb.fix = smtcfb_fix;
 731
 732         strcpy(sfb->fb.fix.id, name);
 733
 734         sfb->fb.fix.type = FB_TYPE_PACKED_PIXELS;
 735         sfb->fb.fix.type_aux = 0;
 736         sfb->fb.fix.xpanstep = 0;
 737         sfb->fb.fix.ypanstep = 0;
 738         sfb->fb.fix.ywrapstep = 0;
 739         sfb->fb.fix.accel = FB_ACCEL_SMI_LYNX;
 740
 741         sfb->fb.var.nonstd = 0;
 742         sfb->fb.var.activate = FB_ACTIVATE_NOW;
 743         sfb->fb.var.height = -1;
 744         sfb->fb.var.width = -1;
 745         /* text mode acceleration */
 746         sfb->fb.var.accel_flags = FB_ACCELF_TEXT;
 747         sfb->fb.var.vmode = FB_VMODE_NONINTERLACED;
 748         sfb->fb.par = &hw;
 749         sfb->fb.pseudo_palette = colreg;
 750
 751         return sfb;
 752 }
 753
 754 /*
 755  * Unmap in the memory mapped IO registers
 756  */
 757
 758 static void smtc_unmap_mmio(struct smtcfb_info *sfb)
 759 {
 760         if (sfb && smtc_RegBaseAddress)
 761                 smtc_RegBaseAddress = NULL;
 762 }
 763
 764 /*
 765  * Map in the screen memory
 766  */
 767
 768 static int smtc_map_smem(struct smtcfb_info *sfb,
 769                 struct pci_dev *dev, u_long smem_len)
 770 {
 771         if (sfb->fb.var.bits_per_pixel == 32) {
 772 #ifdef __BIG_ENDIAN
 773                 sfb->fb.fix.smem_start = pci_resource_start(dev, 0)
 774                         + 0x800000;
 775 #else
 776                 sfb->fb.fix.smem_start = pci_resource_start(dev, 0);
 777 #endif
 778         } else {
 779                 sfb->fb.fix.smem_start = pci_resource_start(dev, 0);
 780         }
 781
 782         sfb->fb.fix.smem_len = smem_len;
 783
 784         sfb->fb.screen_base = smtc_VRAMBaseAddress;
 785
 786         if (!sfb->fb.screen_base) {
 787                 printk(KERN_ERR "%s: unable to map screen memory\n",
 788                                 sfb->fb.fix.id);
 789                 return -ENOMEM;
 790         }
 791
 792         return 0;
 793 }
 794
 795 /*
 796  * Unmap in the screen memory
 797  *
 798  */
 799 static void smtc_unmap_smem(struct smtcfb_info *sfb)
 800 {
 801         if (sfb && sfb->fb.screen_base) {
 802                 iounmap(sfb->fb.screen_base);
 803                 sfb->fb.screen_base = NULL;
 804         }
 805 }
 806
 807 /*
 808  * We need to wake up the LynxEM+, and make sure its in linear memory mode.
 809  */
 810 static inline void sm7xx_init_hw(void)
 811 {
 812         outb_p(0x18, 0x3c4);
 813         outb_p(0x11, 0x3c5);
 814 }
 815
 816 static void smtc_free_fb_info(struct smtcfb_info *sfb)
 817 {
 818         if (sfb) {
 819                 fb_alloc_cmap(&sfb->fb.cmap, 0, 0);
 820                 kfree(sfb);
 821         }
 822 }
 823
 824 /*
 825  *      sm712vga_setup - process command line options, get vga parameter
 826  *      @options: string of options
 827  *      Returns zero.
 828  *
 829  */
 830 static int __init sm712vga_setup(char *options)
 831 {
 832         int index;
 833
 834         if (!options || !*options) {
 835                 smdbg("\n No vga parameter\n");
 836                 return -EINVAL;
 837         }
 838
 839         smtc_screen_info.lfb_width = 0;
 840         smtc_screen_info.lfb_height = 0;
 841         smtc_screen_info.lfb_depth = 0;
 842
 843         smdbg("\nsm712vga_setup = %s\n", options);
 844
 845         for (index = 0;
 846              index < ARRAY_SIZE(vesa_mode);
 847              index++) {
 848                 if (strstr(options, vesa_mode[index].mode_index)) {
 849                         smtc_screen_info.lfb_width = vesa_mode[index].lfb_width;
 850                         smtc_screen_info.lfb_height =
 851                                         vesa_mode[index].lfb_height;
 852                         smtc_screen_info.lfb_depth = vesa_mode[index].lfb_depth;
 853                         return 0;
 854                 }
 855         }
 856
 857         return -1;
 858 }
 859 __setup("vga=", sm712vga_setup);
 860
 861 /* Jason (08/13/2009)
 862  * Original init function changed to probe method to be used by pci_drv
 863  * process used to detect chips replaced with kernel process in pci_drv
 864  */
 865 static int __devinit smtcfb_pci_probe(struct pci_dev *pdev,
 866                                    const struct pci_device_id *ent)
 867 {
 868         struct smtcfb_info *sfb;
 869         u_long smem_size = 0x00800000;  /* default 8MB */
 870         char name[16];
 871         int err;
 872         unsigned long pFramebufferPhysical;
 873
 874         printk(KERN_INFO
 875                 "Silicon Motion display driver " SMTC_LINUX_FB_VERSION "\n");
 876
 877         err = pci_enable_device(pdev);  /* enable SMTC chip */
 878         if (err)
 879                 return err;
 880
 881         hw.chipID = ent->device;
 882         sprintf(name, "sm%Xfb", hw.chipID);
 883
 884         sfb = smtc_alloc_fb_info(pdev, name);
 885
 886         if (!sfb)
 887                 goto failed_free;
 888         /* Jason (08/13/2009)
 889          * Store fb_info to be further used when suspending and resuming
 890          */
 891         pci_set_drvdata(pdev, sfb);
 892
 893         sm7xx_init_hw();
 894
 895         /*get mode parameter from smtc_screen_info */
 896         if (smtc_screen_info.lfb_width != 0) {
 897                 sfb->fb.var.xres = smtc_screen_info.lfb_width;
 898                 sfb->fb.var.yres = smtc_screen_info.lfb_height;
 899                 sfb->fb.var.bits_per_pixel = smtc_screen_info.lfb_depth;
 900         } else {
 901                 /* default resolution 1024x600 16bit mode */
 902                 sfb->fb.var.xres = SCREEN_X_RES;
 903                 sfb->fb.var.yres = SCREEN_Y_RES;
 904                 sfb->fb.var.bits_per_pixel = SCREEN_BPP;
 905         }
 906
 907 #ifdef __BIG_ENDIAN
 908         if (sfb->fb.var.bits_per_pixel == 24)
 909                 sfb->fb.var.bits_per_pixel = (smtc_screen_info.lfb_depth = 32);
 910 #endif
 911         /* Map address and memory detection */
 912         pFramebufferPhysical = pci_resource_start(pdev, 0);
 913         pci_read_config_byte(pdev, PCI_REVISION_ID, &hw.chipRevID);
 914
 915         switch (hw.chipID) {
 916         case 0x710:
 917         case 0x712:
 918                 sfb->fb.fix.mmio_start = pFramebufferPhysical + 0x00400000;
 919                 sfb->fb.fix.mmio_len = 0x00400000;
 920                 smem_size = SM712_VIDEOMEMORYSIZE;
 921 #ifdef __BIG_ENDIAN
 922                 hw.m_pLFB = (smtc_VRAMBaseAddress =
 923                     ioremap(pFramebufferPhysical, 0x00c00000));
 924 #else
 925                 hw.m_pLFB = (smtc_VRAMBaseAddress =
 926                     ioremap(pFramebufferPhysical, 0x00800000));
 927 #endif
 928                 hw.m_pMMIO = (smtc_RegBaseAddress =
 929                     smtc_VRAMBaseAddress + 0x00700000);
 930                 hw.m_pDPR = smtc_VRAMBaseAddress + 0x00408000;
 931                 hw.m_pVPR = hw.m_pLFB + 0x0040c000;
 932 #ifdef __BIG_ENDIAN
 933                 if (sfb->fb.var.bits_per_pixel == 32) {
 934                         smtc_VRAMBaseAddress += 0x800000;
 935                         hw.m_pLFB += 0x800000;
 936                         printk(KERN_INFO
 937                                 "\nsmtc_VRAMBaseAddress=%p hw.m_pLFB=%p\n",
 938                                         smtc_VRAMBaseAddress, hw.m_pLFB);
 939                 }
 940 #endif
 941                 if (!smtc_RegBaseAddress) {
 942                         printk(KERN_ERR
 943                                 "%s: unable to map memory mapped IO\n",
 944                                 sfb->fb.fix.id);
 945                         err = -ENOMEM;
 946                         goto failed_fb;
 947                 }
 948
 949                 /* set MCLK = 14.31818 * (0x16 / 0x2) */
 950                 smtc_seqw(0x6a, 0x16);
 951                 smtc_seqw(0x6b, 0x02);
 952                 smtc_seqw(0x62, 0x3e);
 953                 /* enable PCI burst */
 954                 smtc_seqw(0x17, 0x20);
 955                 /* enable word swap */
 956 #ifdef __BIG_ENDIAN
 957                 if (sfb->fb.var.bits_per_pixel == 32)
 958                         smtc_seqw(0x17, 0x30);
 959 #endif
 960                 break;
 961         case 0x720:
 962                 sfb->fb.fix.mmio_start = pFramebufferPhysical;
 963                 sfb->fb.fix.mmio_len = 0x00200000;
 964                 smem_size = SM722_VIDEOMEMORYSIZE;
 965                 hw.m_pDPR = ioremap(pFramebufferPhysical, 0x00a00000);
 966                 hw.m_pLFB = (smtc_VRAMBaseAddress =
 967                     hw.m_pDPR + 0x00200000);
 968                 hw.m_pMMIO = (smtc_RegBaseAddress =
 969                     hw.m_pDPR + 0x000c0000);
 970                 hw.m_pVPR = hw.m_pDPR + 0x800;
 971
 972                 smtc_seqw(0x62, 0xff);
 973                 smtc_seqw(0x6a, 0x0d);
 974                 smtc_seqw(0x6b, 0x02);
 975                 break;
 976         default:
 977                 printk(KERN_ERR
 978                 "No valid Silicon Motion display chip was detected!\n");
 979
 980                 goto failed_fb;
 981         }
 982
 983         /* can support 32 bpp */
 984         if (15 == sfb->fb.var.bits_per_pixel)
 985                 sfb->fb.var.bits_per_pixel = 16;
 986
 987         sfb->fb.var.xres_virtual = sfb->fb.var.xres;
 988         sfb->fb.var.yres_virtual = sfb->fb.var.yres;
 989         err = smtc_map_smem(sfb, pdev, smem_size);
 990         if (err)
 991                 goto failed;
 992
 993         smtcfb_setmode(sfb);
 994         /* Primary display starting from 0 position */
 995         hw.BaseAddressInVRAM = 0;
 996         sfb->fb.par = &hw;
 997
 998         err = register_framebuffer(&sfb->fb);
 999         if (err < 0)
1000                 goto failed;
1001
1002         printk(KERN_INFO "Silicon Motion SM%X Rev%X primary display mode"
1003                         "%dx%d-%d Init Complete.\n", hw.chipID, hw.chipRevID,
1004                         sfb->fb.var.xres, sfb->fb.var.yres,
1005                         sfb->fb.var.bits_per_pixel);
1006
1007         return 0;
1008
1009 failed:
1010         printk(KERN_ERR "Silicon Motion, Inc.  primary display init fail\n");
1011
1012         smtc_unmap_smem(sfb);
1013         smtc_unmap_mmio(sfb);
1014 failed_fb:
1015         smtc_free_fb_info(sfb);
1016
1017 failed_free:
1018         pci_disable_device(pdev);
1019
1020         return err;
1021 }
1022
1023
1024 /* Jason (08/11/2009) PCI_DRV wrapper essential structs */
1025 static DEFINE_PCI_DEVICE_TABLE(smtcfb_pci_table) = {
1026         { PCI_DEVICE(0x126f, 0x710), },
1027         { PCI_DEVICE(0x126f, 0x712), },
1028         { PCI_DEVICE(0x126f, 0x720), },
1029         {0,}
1030 };
1031
1032
1033 /* Jason (08/14/2009)
1034  * do some clean up when the driver module is removed
1035  */
1036 static void __devexit smtcfb_pci_remove(struct pci_dev *pdev)
1037 {
1038         struct smtcfb_info *sfb;
1039
1040         sfb = pci_get_drvdata(pdev);
1041         pci_set_drvdata(pdev, NULL);
1042         smtc_unmap_smem(sfb);
1043         smtc_unmap_mmio(sfb);
1044         unregister_framebuffer(&sfb->fb);
1045         smtc_free_fb_info(sfb);
1046 }
1047
1048 #ifdef CONFIG_PM
1049 static int smtcfb_pci_suspend(struct device *device)
1050 {
1051         struct pci_dev *pdev = to_pci_dev(device);
1052         struct smtcfb_info *sfb;
1053
1054         sfb = pci_get_drvdata(pdev);
1055
1056         /* set the hw in sleep mode use externel clock and self memory refresh
1057          * so that we can turn off internal PLLs later on
1058          */
1059         smtc_seqw(0x20, (smtc_seqr(0x20) | 0xc0));
1060         smtc_seqw(0x69, (smtc_seqr(0x69) & 0xf7));
1061
1062         console_lock();
1063         fb_set_suspend(&sfb->fb, 1);
1064         console_unlock();
1065
1066         /* additionally turn off all function blocks including internal PLLs */
1067         smtc_seqw(0x21, 0xff);
1068
1069         return 0;
1070 }
1071
1072 static int smtcfb_pci_resume(struct device *device)
1073 {
1074         struct pci_dev *pdev = to_pci_dev(device);
1075         struct smtcfb_info *sfb;
1076
1077         sfb = pci_get_drvdata(pdev);
1078
1079         /* reinit hardware */
1080         sm7xx_init_hw();
1081         switch (hw.chipID) {
1082         case 0x710:
1083         case 0x712:
1084                 /* set MCLK = 14.31818 *  (0x16 / 0x2) */
1085                 smtc_seqw(0x6a, 0x16);
1086                 smtc_seqw(0x6b, 0x02);
1087                 smtc_seqw(0x62, 0x3e);
1088                 /* enable PCI burst */
1089                 smtc_seqw(0x17, 0x20);
1090 #ifdef __BIG_ENDIAN
1091                 if (sfb->fb.var.bits_per_pixel == 32)
1092                         smtc_seqw(0x17, 0x30);
1093 #endif
1094                 break;
1095         case 0x720:
1096                 smtc_seqw(0x62, 0xff);
1097                 smtc_seqw(0x6a, 0x0d);
1098                 smtc_seqw(0x6b, 0x02);
1099                 break;
1100         }
1101
1102         smtc_seqw(0x34, (smtc_seqr(0x34) | 0xc0));
1103         smtc_seqw(0x33, ((smtc_seqr(0x33) | 0x08) & 0xfb));
1104
1105         smtcfb_setmode(sfb);
1106
1107         console_lock();
1108         fb_set_suspend(&sfb->fb, 0);
1109         console_unlock();
1110
1111         return 0;
1112 }
1113
1114 static const struct dev_pm_ops sm7xx_pm_ops = {
1115         .suspend = smtcfb_pci_suspend,
1116         .resume = smtcfb_pci_resume,
1117         .freeze = smtcfb_pci_suspend,
1118         .thaw = smtcfb_pci_resume,
1119         .poweroff = smtcfb_pci_suspend,
1120         .restore = smtcfb_pci_resume,
1121 };
1122
1123 #define SM7XX_PM_OPS (&sm7xx_pm_ops)
1124
1125 #else  /* !CONFIG_PM */
1126
1127 #define SM7XX_PM_OPS NULL
1128
1129 #endif /* !CONFIG_PM */
1130
1131 static struct pci_driver smtcfb_driver = {
1132         .name = "smtcfb",
1133         .id_table = smtcfb_pci_table,
1134         .probe = smtcfb_pci_probe,
1135         .remove = __devexit_p(smtcfb_pci_remove),
1136         .driver.pm  = SM7XX_PM_OPS,
1137 };
1138
1139 static int __init smtcfb_init(void)
1140 {
1141         return pci_register_driver(&smtcfb_driver);
1142 }
1143
1144 static void __exit smtcfb_exit(void)
1145 {
1146         pci_unregister_driver(&smtcfb_driver);
1147 }
1148
1149 module_init(smtcfb_init);
1150 module_exit(smtcfb_exit);
1151
1152 MODULE_AUTHOR("Siliconmotion ");
1153 MODULE_DESCRIPTION("Framebuffer driver for SMI Graphic Cards");
1154 MODULE_LICENSE("GPL");