drivers/video/aty/radeon_monitor.c

   1 #include "radeonfb.h"
   2 #include "../edid.h"
   3
   4 #ifdef CONFIG_PPC_OF
   5 #include <asm/prom.h>
   6 #include <asm/pci-bridge.h>
   7 #endif /* CONFIG_PPC_OF */
   8
   9 static struct fb_var_screeninfo radeonfb_default_var = {
  10         .xres           = 640,
  11         .yres           = 480,
  12         .xres_virtual   = 640,
  13         .yres_virtual   = 480,
  14         .bits_per_pixel = 8,
  15         .red            = { .length = 8 },
  16         .green          = { .length = 8 },
  17         .blue           = { .length = 8 },
  18         .activate       = FB_ACTIVATE_NOW,
  19         .height         = -1,
  20         .width          = -1,
  21         .pixclock       = 39721,
  22         .left_margin    = 40,
  23         .right_margin   = 24,
  24         .upper_margin   = 32,
  25         .lower_margin   = 11,
  26         .hsync_len      = 96,
  27         .vsync_len      = 2,
  28         .vmode          = FB_VMODE_NONINTERLACED
  29 };
  30
  31 static char *radeon_get_mon_name(int type)
  32 {
  33         char *pret = NULL;
  34
  35         switch (type) {
  36                 case MT_NONE:
  37                         pret = "no";
  38                         break;
  39                 case MT_CRT:
  40                         pret = "CRT";
  41                         break;
  42                 case MT_DFP:
  43                         pret = "DFP";
  44                         break;
  45                 case MT_LCD:
  46                         pret = "LCD";
  47                         break;
  48                 case MT_CTV:
  49                         pret = "CTV";
  50                         break;
  51                 case MT_STV:
  52                         pret = "STV";
  53                         break;
  54         }
  55
  56         return pret;
  57 }
  58
  59
  60 #ifdef CONFIG_PPC_OF
  61 /*
  62  * Try to find monitor informations & EDID data out of the Open Firmware
  63  * device-tree. This also contains some "hacks" to work around a few machine
  64  * models with broken OF probing by hard-coding known EDIDs for some Mac
  65  * laptops internal LVDS panel. (XXX: not done yet)
  66  */
  67 static int __devinit radeon_parse_montype_prop(struct device_node *dp, u8 **out_EDID, int hdno)
  68 {
  69         static char *propnames[] = { "DFP,EDID", "LCD,EDID", "EDID", "EDID1", "EDID2",  NULL };
  70         u8 *pedid = NULL;
  71         u8 *pmt = NULL;
  72         u8 *tmp;
  73         int i, mt = MT_NONE;
  74
  75         RTRACE("analyzing OF properties...\n");
  76         pmt = (u8 *)get_property(dp, "display-type", NULL);
  77         if (!pmt)
  78                 return MT_NONE;
  79         RTRACE("display-type: %s\n", pmt);
  80         /* OF says "LCD" for DFP as well, we discriminate from the caller of this
  81          * function
  82          */
  83         if (!strcmp(pmt, "LCD") || !strcmp(pmt, "DFP"))
  84                 mt = MT_DFP;
  85         else if (!strcmp(pmt, "CRT"))
  86                 mt = MT_CRT;
  87         else {
  88                 if (strcmp(pmt, "NONE") != 0)
  89                         printk(KERN_WARNING "radeonfb: Unknown OF display-type: %s\n",
  90                                pmt);
  91                 return MT_NONE;
  92         }
  93
  94         for (i = 0; propnames[i] != NULL; ++i) {
  95                 pedid = (u8 *)get_property(dp, propnames[i], NULL);
  96                 if (pedid != NULL)
  97                         break;
  98         }
  99         /* We didn't find the EDID in the leaf node, some cards will actually
 100          * put EDID1/EDID2 in the parent, look for these (typically M6 tipb).
 101          * single-head cards have hdno == -1 and skip this step
 102          */
 103         if (pedid == NULL && dp->parent && (hdno != -1))
 104                 pedid = get_property(dp->parent, (hdno == 0) ? "EDID1" : "EDID2", NULL);
 105         if (pedid == NULL && dp->parent && (hdno == 0))
 106                 pedid = get_property(dp->parent, "EDID", NULL);
 107         if (pedid == NULL)
 108                 return mt;
 109
 110         tmp = (u8 *)kmalloc(EDID_LENGTH, GFP_KERNEL);
 111         if (!tmp)
 112                 return mt;
 113         memcpy(tmp, pedid, EDID_LENGTH);
 114         *out_EDID = tmp;
 115         return mt;
 116 }
 117
 118 static int __devinit radeon_probe_OF_head(struct radeonfb_info *rinfo, int head_no,
 119                                           u8 **out_EDID)
 120 {
 121         struct device_node *dp;
 122
 123         RTRACE("radeon_probe_OF_head\n");
 124
 125         dp = pci_device_to_OF_node(rinfo->pdev);
 126         while (dp == NULL)
 127                 return MT_NONE;
 128
 129         if (rinfo->has_CRTC2) {
 130                 char *pname;
 131                 int len, second = 0;
 132
 133                 dp = dp->child;
 134                 do {
 135                         if (!dp)
 136                                 return MT_NONE;
 137                         pname = (char *)get_property(dp, "name", NULL);
 138                         if (!pname)
 139                                 return MT_NONE;
 140                         len = strlen(pname);
 141                         RTRACE("head: %s (letter: %c, head_no: %d)\n",
 142                                pname, pname[len-1], head_no);
 143                         if (pname[len-1] == 'A' && head_no == 0) {
 144                                 int mt = radeon_parse_montype_prop(dp, out_EDID, 0);
 145                                 /* Maybe check for LVDS_GEN_CNTL here ? I need to check out
 146                                  * what OF does when booting with lid closed
 147                                  */
 148                                 if (mt == MT_DFP && rinfo->is_mobility)
 149                                         mt = MT_LCD;
 150                                 return mt;
 151                         } else if (pname[len-1] == 'B' && head_no == 1)
 152                                 return radeon_parse_montype_prop(dp, out_EDID, 1);
 153                         second = 1;
 154                         dp = dp->sibling;
 155                 } while(!second);
 156         } else {
 157                 if (head_no > 0)
 158                         return MT_NONE;
 159                 return radeon_parse_montype_prop(dp, out_EDID, -1);
 160         }
 161         return MT_NONE;
 162 }
 163 #endif /* CONFIG_PPC_OF */
 164
 165
 166 static int __devinit radeon_get_panel_info_BIOS(struct radeonfb_info *rinfo)
 167 {
 168         unsigned long tmp, tmp0;
 169         char stmp[30];
 170         int i;
 171
 172         if (!rinfo->bios_seg)
 173                 return 0;
 174
 175         if (!(tmp = BIOS_IN16(rinfo->fp_bios_start + 0x40))) {
 176                 printk(KERN_ERR "radeonfb: Failed to detect DFP panel info using BIOS\n");
 177                 rinfo->panel_info.pwr_delay = 200;
 178                 return 0;
 179         }
 180
 181         for(i=0; i<24; i++)
 182                 stmp[i] = BIOS_IN8(tmp+i+1);
 183         stmp[24] = 0;
 184         printk("radeonfb: panel ID string: %s\n", stmp);
 185         rinfo->panel_info.xres = BIOS_IN16(tmp + 25);
 186         rinfo->panel_info.yres = BIOS_IN16(tmp + 27);
 187         printk("radeonfb: detected LVDS panel size from BIOS: %dx%d\n",
 188                 rinfo->panel_info.xres, rinfo->panel_info.yres);
 189
 190         rinfo->panel_info.pwr_delay = BIOS_IN16(tmp + 44);
 191         RTRACE("BIOS provided panel power delay: %d\n", rinfo->panel_info.pwr_delay);
 192         if (rinfo->panel_info.pwr_delay > 2000 || rinfo->panel_info.pwr_delay <= 0)
 193                 rinfo->panel_info.pwr_delay = 2000;
 194
 195         /*
 196          * Some panels only work properly with some divider combinations
 197          */
 198         rinfo->panel_info.ref_divider = BIOS_IN16(tmp + 46);
 199         rinfo->panel_info.post_divider = BIOS_IN8(tmp + 48);
 200         rinfo->panel_info.fbk_divider = BIOS_IN16(tmp + 49);
 201         if (rinfo->panel_info.ref_divider != 0 &&
 202             rinfo->panel_info.fbk_divider > 3) {
 203                 rinfo->panel_info.use_bios_dividers = 1;
 204                 printk(KERN_INFO "radeondb: BIOS provided dividers will be used\n");
 205                 RTRACE("ref_divider = %x\n", rinfo->panel_info.ref_divider);
 206                 RTRACE("post_divider = %x\n", rinfo->panel_info.post_divider);
 207                 RTRACE("fbk_divider = %x\n", rinfo->panel_info.fbk_divider);
 208         }
 209         RTRACE("Scanning BIOS table ...\n");
 210         for(i=0; i<32; i++) {
 211                 tmp0 = BIOS_IN16(tmp+64+i*2);
 212                 if (tmp0 == 0)
 213                         break;
 214                 RTRACE(" %d x %d\n", BIOS_IN16(tmp0), BIOS_IN16(tmp0+2));
 215                 if ((BIOS_IN16(tmp0) == rinfo->panel_info.xres) &&
 216                     (BIOS_IN16(tmp0+2) == rinfo->panel_info.yres)) {
 217                         rinfo->panel_info.hblank = (BIOS_IN16(tmp0+17) - BIOS_IN16(tmp0+19)) * 8;
 218                         rinfo->panel_info.hOver_plus = ((BIOS_IN16(tmp0+21) -
 219                                                          BIOS_IN16(tmp0+19) -1) * 8) & 0x7fff;
 220                         rinfo->panel_info.hSync_width = BIOS_IN8(tmp0+23) * 8;
 221                         rinfo->panel_info.vblank = BIOS_IN16(tmp0+24) - BIOS_IN16(tmp0+26);
 222                         rinfo->panel_info.vOver_plus = (BIOS_IN16(tmp0+28) & 0x7ff) - BIOS_IN16(tmp0+26);
 223                         rinfo->panel_info.vSync_width = (BIOS_IN16(tmp0+28) & 0xf800) >> 11;
 224                         rinfo->panel_info.clock = BIOS_IN16(tmp0+9);
 225                         /* Assume high active syncs for now until ATI tells me more... maybe we
 226                          * can probe register values here ?
 227                          */
 228                         rinfo->panel_info.hAct_high = 1;
 229                         rinfo->panel_info.vAct_high = 1;
 230                         /* Mark panel infos valid */
 231                         rinfo->panel_info.valid = 1;
 232
 233                         RTRACE("Found panel in BIOS table:\n");
 234                         RTRACE("  hblank: %d\n", rinfo->panel_info.hblank);
 235                         RTRACE("  hOver_plus: %d\n", rinfo->panel_info.hOver_plus);
 236                         RTRACE("  hSync_width: %d\n", rinfo->panel_info.hSync_width);
 237                         RTRACE("  vblank: %d\n", rinfo->panel_info.vblank);
 238                         RTRACE("  vOver_plus: %d\n", rinfo->panel_info.vOver_plus);
 239                         RTRACE("  vSync_width: %d\n", rinfo->panel_info.vSync_width);
 240                         RTRACE("  clock: %d\n", rinfo->panel_info.clock);
 241
 242                         return 1;
 243                 }
 244         }
 245         RTRACE("Didn't find panel in BIOS table !\n");
 246
 247         return 0;
 248 }
 249
 250 /* Try to extract the connector informations from the BIOS. This
 251  * doesn't quite work yet, but it's output is still useful for
 252  * debugging
 253  */
 254 static void __devinit radeon_parse_connector_info(struct radeonfb_info *rinfo)
 255 {
 256         int offset, chips, connectors, tmp, i, conn, type;
 257
 258         static char* __conn_type_table[16] = {
 259                 "NONE", "Proprietary", "CRT", "DVI-I", "DVI-D", "Unknown", "Unknown",
 260                 "Unknown", "Unknown", "Unknown", "Unknown", "Unknown", "Unknown",
 261                 "Unknown", "Unknown", "Unknown"
 262         };
 263
 264         if (!rinfo->bios_seg)
 265                 return;
 266
 267         offset = BIOS_IN16(rinfo->fp_bios_start + 0x50);
 268         if (offset == 0) {
 269                 printk(KERN_WARNING "radeonfb: No connector info table detected\n");
 270                 return;
 271         }
 272
 273         /* Don't do much more at this point but displaying the data if
 274          * DEBUG is enabled
 275          */
 276         chips = BIOS_IN8(offset++) >> 4;
 277         RTRACE("%d chips in connector info\n", chips);
 278         for (i = 0; i < chips; i++) {
 279                 tmp = BIOS_IN8(offset++);
 280                 connectors = tmp & 0x0f;
 281                 RTRACE(" - chip %d has %d connectors\n", tmp >> 4, connectors);
 282                 for (conn = 0; ; conn++) {
 283                         tmp = BIOS_IN16(offset);
 284                         if (tmp == 0)
 285                                 break;
 286                         offset += 2;
 287                         type = (tmp >> 12) & 0x0f;
 288                         RTRACE("  * connector %d of type %d (%s) : %04x\n",
 289                                conn, type, __conn_type_table[type], tmp);
 290                 }
 291         }
 292 }
 293
 294
 295 /*
 296  * Probe physical connection of a CRT. This code comes from XFree
 297  * as well and currently is only implemented for the CRT DAC, the
 298  * code for the TVDAC is commented out in XFree as "non working"
 299  */
 300 static int __devinit radeon_crt_is_connected(struct radeonfb_info *rinfo, int is_crt_dac)
 301 {
 302     int           connected = 0;
 303
 304     /* the monitor either wasn't connected or it is a non-DDC CRT.
 305      * try to probe it
 306      */
 307     if (is_crt_dac) {
 308         unsigned long ulOrigVCLK_ECP_CNTL;
 309         unsigned long ulOrigDAC_CNTL;
 310         unsigned long ulOrigDAC_EXT_CNTL;
 311         unsigned long ulOrigCRTC_EXT_CNTL;
 312         unsigned long ulData;
 313         unsigned long ulMask;
 314
 315         ulOrigVCLK_ECP_CNTL = INPLL(VCLK_ECP_CNTL);
 316
 317         ulData              = ulOrigVCLK_ECP_CNTL;
 318         ulData             &= ~(PIXCLK_ALWAYS_ONb
 319                                 | PIXCLK_DAC_ALWAYS_ONb);
 320         ulMask              = ~(PIXCLK_ALWAYS_ONb
 321                                 | PIXCLK_DAC_ALWAYS_ONb);
 322         OUTPLLP(VCLK_ECP_CNTL, ulData, ulMask);
 323
 324         ulOrigCRTC_EXT_CNTL = INREG(CRTC_EXT_CNTL);
 325         ulData              = ulOrigCRTC_EXT_CNTL;
 326         ulData             |= CRTC_CRT_ON;
 327         OUTREG(CRTC_EXT_CNTL, ulData);
 328
 329         ulOrigDAC_EXT_CNTL = INREG(DAC_EXT_CNTL);
 330         ulData             = ulOrigDAC_EXT_CNTL;
 331         ulData            &= ~DAC_FORCE_DATA_MASK;
 332         ulData            |=  (DAC_FORCE_BLANK_OFF_EN
 333                                |DAC_FORCE_DATA_EN
 334                                |DAC_FORCE_DATA_SEL_MASK);
 335         if ((rinfo->family == CHIP_FAMILY_RV250) ||
 336             (rinfo->family == CHIP_FAMILY_RV280))
 337             ulData |= (0x01b6 << DAC_FORCE_DATA_SHIFT);
 338         else
 339             ulData |= (0x01ac << DAC_FORCE_DATA_SHIFT);
 340
 341         OUTREG(DAC_EXT_CNTL, ulData);
 342
 343         ulOrigDAC_CNTL     = INREG(DAC_CNTL);
 344         ulData             = ulOrigDAC_CNTL;
 345         ulData            |= DAC_CMP_EN;
 346         ulData            &= ~(DAC_RANGE_CNTL_MASK
 347                                | DAC_PDWN);
 348         ulData            |= 0x2;
 349         OUTREG(DAC_CNTL, ulData);
 350
 351         mdelay(1);
 352
 353         ulData     = INREG(DAC_CNTL);
 354         connected =  (DAC_CMP_OUTPUT & ulData) ? 1 : 0;
 355
 356         ulData    = ulOrigVCLK_ECP_CNTL;
 357         ulMask    = 0xFFFFFFFFL;
 358         OUTPLLP(VCLK_ECP_CNTL, ulData, ulMask);
 359
 360         OUTREG(DAC_CNTL,      ulOrigDAC_CNTL     );
 361         OUTREG(DAC_EXT_CNTL,  ulOrigDAC_EXT_CNTL );
 362         OUTREG(CRTC_EXT_CNTL, ulOrigCRTC_EXT_CNTL);
 363     }
 364
 365     return connected ? MT_CRT : MT_NONE;
 366 }
 367
 368 /*
 369  * Parse the "monitor_layout" string if any. This code is mostly
 370  * copied from XFree's radeon driver
 371  */
 372 static int __devinit radeon_parse_monitor_layout(struct radeonfb_info *rinfo,
 373                                                  const char *monitor_layout)
 374 {
 375         char s1[5], s2[5];
 376         int i = 0, second = 0;
 377         const char *s;
 378
 379         if (!monitor_layout)
 380                 return 0;
 381
 382         s = monitor_layout;
 383         do {
 384                 switch(*s) {
 385                 case ',':
 386                         s1[i] = '\0';
 387                         i = 0;
 388                         second = 1;
 389                         break;
 390                 case ' ':
 391                 case '\0':
 392                         break;
 393                 default:
 394                         if (i > 4)
 395                                 break;
 396                         if (second)
 397                                 s2[i] = *s;
 398                         else
 399                                 s1[i] = *s;
 400                         i++;
 401                 }
 402         } while (*s++);
 403         if (second)
 404                 s2[i] = 0;
 405         else {
 406                 s1[i] = 0;
 407                 s2[0] = 0;
 408         }
 409         if (strcmp(s1, "CRT") == 0)
 410                 rinfo->mon1_type = MT_CRT;
 411         else if (strcmp(s1, "TMDS") == 0)
 412                 rinfo->mon1_type = MT_DFP;
 413         else if (strcmp(s1, "LVDS") == 0)
 414                 rinfo->mon1_type = MT_LCD;
 415
 416         if (strcmp(s2, "CRT") == 0)
 417                 rinfo->mon2_type = MT_CRT;
 418         else if (strcmp(s2, "TMDS") == 0)
 419                 rinfo->mon2_type = MT_DFP;
 420         else if (strcmp(s2, "LVDS") == 0)
 421                 rinfo->mon2_type = MT_LCD;
 422
 423         return 1;
 424 }
 425
 426 /*
 427  * Probe display on both primary and secondary card's connector (if any)
 428  * by various available techniques (i2c, OF device tree, BIOS, ...) and
 429  * try to retreive EDID. The algorithm here comes from XFree's radeon
 430  * driver
 431  */
 432 void __devinit radeon_probe_screens(struct radeonfb_info *rinfo,
 433                                     const char *monitor_layout, int ignore_edid)
 434 {
 435 #ifdef CONFIG_FB_RADEON_I2C
 436         int ddc_crt2_used = 0;
 437 #endif
 438         int tmp, i;
 439
 440         radeon_parse_connector_info(rinfo);
 441
 442         if (radeon_parse_monitor_layout(rinfo, monitor_layout)) {
 443
 444                 /*
 445                  * If user specified a monitor_layout option, use it instead
 446                  * of auto-detecting. Maybe we should only use this argument
 447                  * on the first radeon card probed or provide a way to specify
 448                  * a layout for each card ?
 449                  */
 450
 451                 RTRACE("Using specified monitor layout: %s", monitor_layout);
 452 #ifdef CONFIG_FB_RADEON_I2C
 453                 if (!ignore_edid) {
 454                         if (rinfo->mon1_type != MT_NONE)
 455                                 if (!radeon_probe_i2c_connector(rinfo, ddc_dvi, &rinfo->mon1_EDID)) {
 456                                         radeon_probe_i2c_connector(rinfo, ddc_crt2, &rinfo->mon1_EDID);
 457                                         ddc_crt2_used = 1;
 458                                 }
 459                         if (rinfo->mon2_type != MT_NONE)
 460                                 if (!radeon_probe_i2c_connector(rinfo, ddc_vga, &rinfo->mon2_EDID) &&
 461                                     !ddc_crt2_used)
 462                                         radeon_probe_i2c_connector(rinfo, ddc_crt2, &rinfo->mon2_EDID);
 463                 }
 464 #endif /* CONFIG_FB_RADEON_I2C */
 465                 if (rinfo->mon1_type == MT_NONE) {
 466                         if (rinfo->mon2_type != MT_NONE) {
 467                                 rinfo->mon1_type = rinfo->mon2_type;
 468                                 rinfo->mon1_EDID = rinfo->mon2_EDID;
 469                         } else {
 470                                 rinfo->mon1_type = MT_CRT;
 471                                 printk(KERN_INFO "radeonfb: No valid monitor, assuming CRT on first port\n");
 472                         }
 473                         rinfo->mon2_type = MT_NONE;
 474                         rinfo->mon2_EDID = NULL;
 475                 }
 476         } else {
 477                 /*
 478                  * Auto-detecting display type (well... trying to ...)
 479                  */
 480
 481                 RTRACE("Starting monitor auto detection...\n");
 482
 483 #if DEBUG && defined(CONFIG_FB_RADEON_I2C)
 484                 {
 485                         u8 *EDIDs[4] = { NULL, NULL, NULL, NULL };
 486                         int mon_types[4] = {MT_NONE, MT_NONE, MT_NONE, MT_NONE};
 487                         int i;
 488
 489                         for (i = 0; i < 4; i++)
 490                                 mon_types[i] = radeon_probe_i2c_connector(rinfo,
 491                                                                           i+1, &EDIDs[i]);
 492                 }
 493 #endif /* DEBUG */
 494                 /*
 495                  * Old single head cards
 496                  */
 497                 if (!rinfo->has_CRTC2) {
 498 #ifdef CONFIG_PPC_OF
 499                         if (rinfo->mon1_type == MT_NONE)
 500                                 rinfo->mon1_type = radeon_probe_OF_head(rinfo, 0,
 501                                                                         &rinfo->mon1_EDID);
 502 #endif /* CONFIG_PPC_OF */
 503 #ifdef CONFIG_FB_RADEON_I2C
 504                         if (rinfo->mon1_type == MT_NONE)
 505                                 rinfo->mon1_type = radeon_probe_i2c_connector(rinfo, ddc_dvi,
 506                                                                       &rinfo->mon1_EDID);
 507                         if (rinfo->mon1_type == MT_NONE)
 508                                 rinfo->mon1_type =
 509                                         radeon_probe_i2c_connector(rinfo, ddc_vga,
 510                                                                    &rinfo->mon1_EDID);
 511                         if (rinfo->mon1_type == MT_NONE)
 512                                 rinfo->mon1_type =
 513                                         radeon_probe_i2c_connector(rinfo, ddc_crt2,
 514                                                                    &rinfo->mon1_EDID);
 515 #endif /* CONFIG_FB_RADEON_I2C */
 516                         if (rinfo->mon1_type == MT_NONE)
 517                                 rinfo->mon1_type = MT_CRT;
 518                         goto bail;
 519                 }
 520
 521                 /*
 522                  * Check for cards with reversed DACs or TMDS controllers using BIOS
 523                  */
 524                 if (rinfo->bios_seg &&
 525                     (tmp = BIOS_IN16(rinfo->fp_bios_start + 0x50))) {
 526                         for (i = 1; i < 4; i++) {
 527                                 unsigned int tmp0;
 528
 529                                 if (!BIOS_IN8(tmp + i*2) && i > 1)
 530                                         break;
 531                                 tmp0 = BIOS_IN16(tmp + i*2);
 532                                 if ((!(tmp0 & 0x01)) && (((tmp0 >> 8) & 0x0f) == ddc_dvi)) {
 533                                         rinfo->reversed_DAC = 1;
 534                                         printk(KERN_INFO "radeonfb: Reversed DACs detected\n");
 535                                 }
 536                                 if ((((tmp0 >> 8) & 0x0f) == ddc_dvi) && ((tmp0 >> 4) & 0x01)) {
 537                                         rinfo->reversed_TMDS = 1;
 538                                         printk(KERN_INFO "radeonfb: Reversed TMDS detected\n");
 539                                 }
 540                         }
 541                 }
 542
 543                 /*
 544                  * Probe primary head (DVI or laptop internal panel)
 545                  */
 546 #ifdef CONFIG_PPC_OF
 547                 if (rinfo->mon1_type == MT_NONE)
 548                         rinfo->mon1_type = radeon_probe_OF_head(rinfo, 0, &rinfo->mon1_EDID);
 549 #endif /* CONFIG_PPC_OF */
 550 #ifdef CONFIG_FB_RADEON_I2C
 551                 if (rinfo->mon1_type == MT_NONE)
 552                         rinfo->mon1_type = radeon_probe_i2c_connector(rinfo, ddc_dvi,
 553                                                                       &rinfo->mon1_EDID);
 554                 if (rinfo->mon1_type == MT_NONE) {
 555                         rinfo->mon1_type = radeon_probe_i2c_connector(rinfo, ddc_crt2,
 556                                                                       &rinfo->mon1_EDID);
 557                         if (rinfo->mon1_type != MT_NONE)
 558                                 ddc_crt2_used = 1;
 559                 }
 560 #endif /* CONFIG_FB_RADEON_I2C */
 561                 if (rinfo->mon1_type == MT_NONE && rinfo->is_mobility &&
 562                     ((rinfo->bios_seg && (INREG(BIOS_4_SCRATCH) & 4))
 563                      || (INREG(LVDS_GEN_CNTL) & LVDS_ON))) {
 564                         rinfo->mon1_type = MT_LCD;
 565                         printk("Non-DDC laptop panel detected\n");
 566                 }
 567                 if (rinfo->mon1_type == MT_NONE)
 568                         rinfo->mon1_type = radeon_crt_is_connected(rinfo, rinfo->reversed_DAC);
 569
 570                 /*
 571                  * Probe secondary head (mostly VGA, can be DVI)
 572                  */
 573 #ifdef CONFIG_PPC_OF
 574                 if (rinfo->mon2_type == MT_NONE)
 575                         rinfo->mon2_type = radeon_probe_OF_head(rinfo, 1, &rinfo->mon2_EDID);
 576 #endif /* CONFIG_PPC_OF */
 577 #ifdef CONFIG_FB_RADEON_I2C
 578                 if (rinfo->mon2_type == MT_NONE)
 579                         rinfo->mon2_type = radeon_probe_i2c_connector(rinfo, ddc_vga,
 580                                                                       &rinfo->mon2_EDID);
 581                 if (rinfo->mon2_type == MT_NONE && !ddc_crt2_used)
 582                         rinfo->mon2_type = radeon_probe_i2c_connector(rinfo, ddc_crt2,
 583                                                                       &rinfo->mon2_EDID);
 584 #endif /* CONFIG_FB_RADEON_I2C */
 585                 if (rinfo->mon2_type == MT_NONE)
 586                         rinfo->mon2_type = radeon_crt_is_connected(rinfo, !rinfo->reversed_DAC);
 587
 588                 /*
 589                  * If we only detected port 2, we swap them, if none detected,
 590                  * assume CRT (maybe fallback to old BIOS_SCRATCH stuff ? or look
 591                  * at FP registers ?)
 592                  */
 593                 if (rinfo->mon1_type == MT_NONE) {
 594                         if (rinfo->mon2_type != MT_NONE) {
 595                                 rinfo->mon1_type = rinfo->mon2_type;
 596                                 rinfo->mon1_EDID = rinfo->mon2_EDID;
 597                         } else
 598                                 rinfo->mon1_type = MT_CRT;
 599                         rinfo->mon2_type = MT_NONE;
 600                         rinfo->mon2_EDID = NULL;
 601                 }
 602
 603                 /*
 604                  * Deal with reversed TMDS
 605                  */
 606                 if (rinfo->reversed_TMDS) {
 607                         /* Always keep internal TMDS as primary head */
 608                         if (rinfo->mon1_type == MT_DFP || rinfo->mon2_type == MT_DFP) {
 609                                 int tmp_type = rinfo->mon1_type;
 610                                 u8 *tmp_EDID = rinfo->mon1_EDID;
 611                                 rinfo->mon1_type = rinfo->mon2_type;
 612                                 rinfo->mon1_EDID = rinfo->mon2_EDID;
 613                                 rinfo->mon2_type = tmp_type;
 614                                 rinfo->mon2_EDID = tmp_EDID;
 615                                 if (rinfo->mon1_type == MT_CRT || rinfo->mon2_type == MT_CRT)
 616                                         rinfo->reversed_DAC ^= 1;
 617                         }
 618                 }
 619         }
 620         if (ignore_edid) {
 621                 if (rinfo->mon1_EDID)
 622                         kfree(rinfo->mon1_EDID);
 623                 rinfo->mon1_EDID = NULL;
 624                 if (rinfo->mon2_EDID)
 625                         kfree(rinfo->mon2_EDID);
 626                 rinfo->mon2_EDID = NULL;
 627         }
 628
 629  bail:
 630         printk(KERN_INFO "radeonfb: Monitor 1 type %s found\n",
 631                radeon_get_mon_name(rinfo->mon1_type));
 632         if (rinfo->mon1_EDID)
 633                 printk(KERN_INFO "radeonfb: EDID probed\n");
 634         if (!rinfo->has_CRTC2)
 635                 return;
 636         printk(KERN_INFO "radeonfb: Monitor 2 type %s found\n",
 637                radeon_get_mon_name(rinfo->mon2_type));
 638         if (rinfo->mon2_EDID)
 639                 printk(KERN_INFO "radeonfb: EDID probed\n");
 640 }
 641
 642
 643 /*
 644  * This functions applyes any arch/model/machine specific fixups
 645  * to the panel info. It may eventually alter EDID block as
 646  * well or whatever is specific to a given model and not probed
 647  * properly by the default code
 648  */
 649 static void radeon_fixup_panel_info(struct radeonfb_info *rinfo)
 650 {
 651  #ifdef CONFIG_PPC_OF
 652         /*
 653          * LCD Flat panels should use fixed dividers, we enfore that on
 654          * PowerMac only for now...
 655          */
 656         if (!rinfo->panel_info.use_bios_dividers && rinfo->mon1_type == MT_LCD
 657             && rinfo->is_mobility) {
 658                 int ppll_div_sel = INREG8(CLOCK_CNTL_INDEX + 1) & 0x3;
 659                 u32 ppll_divn = INPLL(PPLL_DIV_0 + ppll_div_sel);
 660                 rinfo->panel_info.ref_divider = rinfo->pll.ref_div;
 661                 rinfo->panel_info.fbk_divider = ppll_divn & 0x7ff;
 662                 rinfo->panel_info.post_divider = (ppll_divn >> 16) & 0x7;
 663                 rinfo->panel_info.use_bios_dividers = 1;
 664
 665                 printk(KERN_DEBUG "radeonfb: Using Firmware dividers 0x%08x "
 666                        "from PPLL %d\n",
 667                        rinfo->panel_info.fbk_divider |
 668                        (rinfo->panel_info.post_divider << 16),
 669                        ppll_div_sel);
 670         }
 671 #endif /* CONFIG_PPC_OF */
 672 }
 673
 674
 675 /*
 676  * Fill up panel infos from a mode definition, either returned by the EDID
 677  * or from the default mode when we can't do any better
 678  */
 679 static void radeon_var_to_panel_info(struct radeonfb_info *rinfo, struct fb_var_screeninfo *var)
 680 {
 681         rinfo->panel_info.xres = var->xres;
 682         rinfo->panel_info.yres = var->yres;
 683         rinfo->panel_info.clock = 100000000 / var->pixclock;
 684         rinfo->panel_info.hOver_plus = var->right_margin;
 685         rinfo->panel_info.hSync_width = var->hsync_len;
 686         rinfo->panel_info.hblank = var->left_margin +
 687                 (var->right_margin + var->hsync_len);
 688         rinfo->panel_info.vOver_plus = var->lower_margin;
 689         rinfo->panel_info.vSync_width = var->vsync_len;
 690         rinfo->panel_info.vblank = var->upper_margin +
 691                 (var->lower_margin + var->vsync_len);
 692         rinfo->panel_info.hAct_high =
 693                 (var->sync & FB_SYNC_HOR_HIGH_ACT) != 0;
 694         rinfo->panel_info.vAct_high =
 695                 (var->sync & FB_SYNC_VERT_HIGH_ACT) != 0;
 696         rinfo->panel_info.valid = 1;
 697         /* We use a default of 200ms for the panel power delay,
 698          * I need to have a real schedule() instead of mdelay's in the panel code.
 699          * we might be possible to figure out a better power delay either from
 700          * MacOS OF tree or from the EDID block (proprietary extensions ?)
 701          */
 702         rinfo->panel_info.pwr_delay = 200;
 703 }
 704
 705 static void radeon_var_to_videomode(struct fb_videomode *mode,
 706                                     const struct fb_var_screeninfo *var)
 707 {
 708     mode->xres = var->xres;
 709     mode->yres = var->yres;
 710     mode->pixclock = var->pixclock;
 711     mode->left_margin = var->left_margin;
 712     mode->right_margin = var->right_margin;
 713     mode->upper_margin = var->upper_margin;
 714     mode->lower_margin = var->lower_margin;
 715     mode->hsync_len = var->hsync_len;
 716     mode->vsync_len = var->vsync_len;
 717     mode->sync = var->sync;
 718     mode->vmode = var->vmode;
 719 }
 720
 721 static void radeon_videomode_to_var(struct fb_var_screeninfo *var,
 722                                     const struct fb_videomode *mode)
 723 {
 724     var->xres = mode->xres;
 725     var->yres = mode->yres;
 726     var->xres_virtual = mode->xres;
 727     var->yres_virtual = mode->yres;
 728     var->xoffset = 0;
 729     var->yoffset = 0;
 730     var->pixclock = mode->pixclock;
 731     var->left_margin = mode->left_margin;
 732     var->right_margin = mode->right_margin;
 733     var->upper_margin = mode->upper_margin;
 734     var->lower_margin = mode->lower_margin;
 735     var->hsync_len = mode->hsync_len;
 736     var->vsync_len = mode->vsync_len;
 737     var->sync = mode->sync;
 738     var->vmode = mode->vmode;
 739 }
 740
 741 /*
 742  * Build the modedb for head 1 (head 2 will come later), check panel infos
 743  * from either BIOS or EDID, and pick up the default mode
 744  */
 745 void __devinit radeon_check_modes(struct radeonfb_info *rinfo, const char *mode_option)
 746 {
 747         int has_default_mode = 0;
 748
 749         /*
 750          * Fill default var first
 751          */
 752         rinfo->info->var = radeonfb_default_var;
 753
 754         /*
 755          * First check out what BIOS has to say
 756          */
 757         if (rinfo->mon1_type == MT_LCD)
 758                 radeon_get_panel_info_BIOS(rinfo);
 759
 760         /*
 761          * Parse EDID detailed timings and deduce panel infos if any. Right now
 762          * we only deal with first entry returned by parse_EDID, we may do better
 763          * some day...
 764          */
 765         if (!rinfo->panel_info.use_bios_dividers && rinfo->mon1_type != MT_CRT
 766             && rinfo->mon1_EDID) {
 767                 struct fb_var_screeninfo var;
 768                 RTRACE("Parsing EDID data for panel info\n");
 769                 if (fb_parse_edid(rinfo->mon1_EDID, &var) == 0) {
 770                         if (var.xres >= rinfo->panel_info.xres &&
 771                             var.yres >= rinfo->panel_info.yres)
 772                                 radeon_var_to_panel_info(rinfo, &var);
 773                 }
 774         }
 775
 776         /*
 777          * Do any additional platform/arch fixups to the panel infos
 778          */
 779         radeon_fixup_panel_info(rinfo);
 780
 781         /*
 782          * If we have some valid panel infos, we setup the default mode based on
 783          * those
 784          */
 785         if (rinfo->mon1_type != MT_CRT && rinfo->panel_info.valid) {
 786                 struct fb_var_screeninfo *var = &rinfo->info->var;
 787
 788                 RTRACE("Setting up default mode based on panel info\n");
 789                 var->xres = rinfo->panel_info.xres;
 790                 var->yres = rinfo->panel_info.yres;
 791                 var->xres_virtual = rinfo->panel_info.xres;
 792                 var->yres_virtual = rinfo->panel_info.yres;
 793                 var->xoffset = var->yoffset = 0;
 794                 var->bits_per_pixel = 8;
 795                 var->pixclock = 100000000 / rinfo->panel_info.clock;
 796                 var->left_margin = (rinfo->panel_info.hblank - rinfo->panel_info.hOver_plus
 797                                     - rinfo->panel_info.hSync_width);
 798                 var->right_margin = rinfo->panel_info.hOver_plus;
 799                 var->upper_margin = (rinfo->panel_info.vblank - rinfo->panel_info.vOver_plus
 800                                      - rinfo->panel_info.vSync_width);
 801                 var->lower_margin = rinfo->panel_info.vOver_plus;
 802                 var->hsync_len = rinfo->panel_info.hSync_width;
 803                 var->vsync_len = rinfo->panel_info.vSync_width;
 804                 var->sync = 0;
 805                 if (rinfo->panel_info.hAct_high)
 806                         var->sync |= FB_SYNC_HOR_HIGH_ACT;
 807                 if (rinfo->panel_info.vAct_high)
 808                         var->sync |= FB_SYNC_VERT_HIGH_ACT;
 809                 var->vmode = 0;
 810                 has_default_mode = 1;
 811         }
 812
 813         /*
 814          * Now build modedb from EDID
 815          */
 816         if (rinfo->mon1_EDID) {
 817                 rinfo->mon1_modedb = fb_create_modedb(rinfo->mon1_EDID,
 818                                                       &rinfo->mon1_dbsize);
 819                 fb_get_monitor_limits(rinfo->mon1_EDID, &rinfo->info->monspecs);
 820         }
 821
 822
 823         /*
 824          * Finally, if we don't have panel infos we need to figure some (or
 825          * we try to read it from card), we try to pick a default mode
 826          * and create some panel infos. Whatever...
 827          */
 828         if (rinfo->mon1_type != MT_CRT && !rinfo->panel_info.valid) {
 829                 struct fb_videomode     *modedb;
 830                 int                     dbsize;
 831                 char                    modename[32];
 832
 833                 RTRACE("Guessing panel info...\n");
 834                 if (rinfo->panel_info.xres == 0 || rinfo->panel_info.yres == 0) {
 835                         u32 tmp = INREG(FP_HORZ_STRETCH) & HORZ_PANEL_SIZE;
 836                         rinfo->panel_info.xres = ((tmp >> HORZ_PANEL_SHIFT) + 1) * 8;
 837                         tmp = INREG(FP_VERT_STRETCH) & VERT_PANEL_SIZE;
 838                         rinfo->panel_info.yres = (tmp >> VERT_PANEL_SHIFT) + 1;
 839                 }
 840                 if (rinfo->panel_info.xres == 0 || rinfo->panel_info.yres == 0) {
 841                         printk(KERN_WARNING "radeonfb: Can't find panel size, going back to CRT\n");
 842                         rinfo->mon1_type = MT_CRT;
 843                         goto pickup_default;
 844                 }
 845                 printk(KERN_WARNING "radeonfb: Assuming panel size %dx%d\n",
 846                        rinfo->panel_info.xres, rinfo->panel_info.yres);
 847                 modedb = rinfo->mon1_modedb;
 848                 dbsize = rinfo->mon1_dbsize;
 849                 snprintf(modename, 31, "%dx%d", rinfo->panel_info.xres, rinfo->panel_info.yres);
 850                 if (fb_find_mode(&rinfo->info->var, rinfo->info, modename,
 851                                  modedb, dbsize, NULL, 8) == 0) {
 852                         printk(KERN_WARNING "radeonfb: Can't find mode for panel size, going back to CRT\n");
 853                         rinfo->mon1_type = MT_CRT;
 854                         goto pickup_default;
 855                 }
 856                 has_default_mode = 1;
 857                 radeon_var_to_panel_info(rinfo, &rinfo->info->var);
 858         }
 859
 860  pickup_default:
 861         /*
 862          * Pick up a random default mode
 863          */
 864         if (!has_default_mode || mode_option) {
 865                 struct fb_videomode default_mode;
 866                 if (has_default_mode)
 867                         radeon_var_to_videomode(&default_mode, &rinfo->info->var);
 868                 else
 869                         radeon_var_to_videomode(&default_mode, &radeonfb_default_var);
 870                 if (fb_find_mode(&rinfo->info->var, rinfo->info, mode_option,
 871                                  rinfo->mon1_modedb, rinfo->mon1_dbsize, &default_mode, 8) == 0)
 872                         rinfo->info->var = radeonfb_default_var;
 873         }
 874
 875 }
 876
 877 /*
 878  * The code below is used to pick up a mode in check_var and
 879  * set_var. It should be made generic
 880  */
 881
 882 /*
 883  * This is used when looking for modes. We assign a "goodness" value
 884  * to a mode in the modedb depending how "close" it is from what we
 885  * are looking for.
 886  * Currently, we don't compare that much, we could do better but
 887  * the current fbcon doesn't quite mind ;)
 888  */
 889 static int radeon_compare_modes(const struct fb_var_screeninfo *var,
 890                                 const struct fb_videomode *mode)
 891 {
 892         int goodness = 0;
 893
 894         if (var->yres == mode->yres)
 895                 goodness += 10;
 896         if (var->xres == mode->xres)
 897                 goodness += 9;
 898         return goodness;
 899 }
 900
 901 /*
 902  * This function is called by check_var, it gets the passed in mode parameter, and
 903  * outputs a valid mode matching the passed-in one as closely as possible.
 904  * We need something better ultimately. Things like fbcon basically pass us out
 905  * current mode with xres/yres hacked, while things like XFree will actually
 906  * produce a full timing that we should respect as much as possible.
 907  *
 908  * This is why I added the FB_ACTIVATE_FIND that is used by fbcon. Without this,
 909  * we do a simple spec match, that's all. With it, we actually look for a mode in
 910  * either our monitor modedb or the vesa one if none
 911  *
 912  */
 913 int  radeon_match_mode(struct radeonfb_info *rinfo,
 914                        struct fb_var_screeninfo *dest,
 915                        const struct fb_var_screeninfo *src)
 916 {
 917         const struct fb_videomode       *db = vesa_modes;
 918         int                             i, dbsize = 34;
 919         int                             has_rmx, native_db = 0;
 920         int                             goodness = 0;
 921         const struct fb_videomode       *candidate = NULL;
 922
 923         /* Start with a copy of the requested mode */
 924         memcpy(dest, src, sizeof(struct fb_var_screeninfo));
 925
 926         /* Check if we have a modedb built from EDID */
 927         if (rinfo->mon1_modedb) {
 928                 db = rinfo->mon1_modedb;
 929                 dbsize = rinfo->mon1_dbsize;
 930                 native_db = 1;
 931         }
 932
 933         /* Check if we have a scaler allowing any fancy mode */
 934         has_rmx = rinfo->mon1_type == MT_LCD || rinfo->mon1_type == MT_DFP;
 935
 936         /* If we have a scaler and are passed FB_ACTIVATE_TEST or
 937          * FB_ACTIVATE_NOW, just do basic checking and return if the
 938          * mode match
 939          */
 940         if ((src->activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_TEST ||
 941             (src->activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_NOW) {
 942                 /* We don't have an RMX, validate timings. If we don't have
 943                  * monspecs, we should be paranoid and not let use go above
 944                  * 640x480-60, but I assume userland knows what it's doing here
 945                  * (though I may be proven wrong...)
 946                  */
 947                 if (has_rmx == 0 && rinfo->mon1_modedb)
 948                         if (fb_validate_mode((struct fb_var_screeninfo *)src, rinfo->info))
 949                                 return -EINVAL;
 950                 return 0;
 951         }
 952
 953         /* Now look for a mode in the database */
 954         while (db) {
 955                 for (i = 0; i < dbsize; i++) {
 956                         int g;
 957
 958                         if (db[i].yres < src->yres)
 959                                 continue;
 960                         if (db[i].xres < src->xres)
 961                                 continue;
 962                         g = radeon_compare_modes(src, &db[i]);
 963                         /* If the new mode is at least as good as the previous one,
 964                          * then it's our new candidate
 965                          */
 966                         if (g >= goodness) {
 967                                 candidate = &db[i];
 968                                 goodness = g;
 969                         }
 970                 }
 971                 db = NULL;
 972                 /* If we have a scaler, we allow any mode from the database */
 973                 if (native_db && has_rmx) {
 974                         db = vesa_modes;
 975                         dbsize = 34;
 976                         native_db = 0;
 977                 }
 978         }
 979
 980         /* If we have found a match, return it */
 981         if (candidate != NULL) {
 982                 radeon_videomode_to_var(dest, candidate);
 983                 return 0;
 984         }
 985
 986         /* If we haven't and don't have a scaler, fail */
 987         if (!has_rmx)
 988                 return -EINVAL;
 989
 990         return 0;
 991 }