Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #include "radeonfb.h" |
| 2 | #include "../edid.h" |
| 3 | |
| 4 | static struct fb_var_screeninfo radeonfb_default_var = { |
| 5 | .xres = 640, |
| 6 | .yres = 480, |
| 7 | .xres_virtual = 640, |
| 8 | .yres_virtual = 480, |
| 9 | .bits_per_pixel = 8, |
| 10 | .red = { .length = 8 }, |
| 11 | .green = { .length = 8 }, |
| 12 | .blue = { .length = 8 }, |
| 13 | .activate = FB_ACTIVATE_NOW, |
| 14 | .height = -1, |
| 15 | .width = -1, |
| 16 | .pixclock = 39721, |
| 17 | .left_margin = 40, |
| 18 | .right_margin = 24, |
| 19 | .upper_margin = 32, |
| 20 | .lower_margin = 11, |
| 21 | .hsync_len = 96, |
| 22 | .vsync_len = 2, |
| 23 | .vmode = FB_VMODE_NONINTERLACED |
| 24 | }; |
| 25 | |
| 26 | static char *radeon_get_mon_name(int type) |
| 27 | { |
| 28 | char *pret = NULL; |
| 29 | |
| 30 | switch (type) { |
| 31 | case MT_NONE: |
| 32 | pret = "no"; |
| 33 | break; |
| 34 | case MT_CRT: |
| 35 | pret = "CRT"; |
| 36 | break; |
| 37 | case MT_DFP: |
| 38 | pret = "DFP"; |
| 39 | break; |
| 40 | case MT_LCD: |
| 41 | pret = "LCD"; |
| 42 | break; |
| 43 | case MT_CTV: |
| 44 | pret = "CTV"; |
| 45 | break; |
| 46 | case MT_STV: |
| 47 | pret = "STV"; |
| 48 | break; |
| 49 | } |
| 50 | |
| 51 | return pret; |
| 52 | } |
| 53 | |
| 54 | |
David S. Miller | 9f47df2 | 2007-03-29 01:33:46 -0700 | [diff] [blame] | 55 | #if defined(CONFIG_PPC_OF) || defined(CONFIG_SPARC) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | /* |
| 57 | * Try to find monitor informations & EDID data out of the Open Firmware |
| 58 | * device-tree. This also contains some "hacks" to work around a few machine |
| 59 | * models with broken OF probing by hard-coding known EDIDs for some Mac |
| 60 | * laptops internal LVDS panel. (XXX: not done yet) |
| 61 | */ |
| 62 | static int __devinit radeon_parse_montype_prop(struct device_node *dp, u8 **out_EDID, |
| 63 | int hdno) |
| 64 | { |
| 65 | static char *propnames[] = { "DFP,EDID", "LCD,EDID", "EDID", |
| 66 | "EDID1", "EDID2", NULL }; |
Jeremy Kerr | b04e3dd | 2006-07-12 15:40:40 +1000 | [diff] [blame] | 67 | const u8 *pedid = NULL; |
| 68 | const u8 *pmt = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | u8 *tmp; |
| 70 | int i, mt = MT_NONE; |
| 71 | |
Jean Delvare | bc3bf46 | 2008-04-28 02:15:13 -0700 | [diff] [blame] | 72 | pr_debug("analyzing OF properties...\n"); |
Stephen Rothwell | 40cd3a4 | 2007-05-01 13:54:02 +1000 | [diff] [blame] | 73 | pmt = of_get_property(dp, "display-type", NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | if (!pmt) |
| 75 | return MT_NONE; |
Jean Delvare | bc3bf46 | 2008-04-28 02:15:13 -0700 | [diff] [blame] | 76 | pr_debug("display-type: %s\n", pmt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | /* OF says "LCD" for DFP as well, we discriminate from the caller of this |
| 78 | * function |
| 79 | */ |
| 80 | if (!strcmp(pmt, "LCD") || !strcmp(pmt, "DFP")) |
| 81 | mt = MT_DFP; |
| 82 | else if (!strcmp(pmt, "CRT")) |
| 83 | mt = MT_CRT; |
| 84 | else { |
| 85 | if (strcmp(pmt, "NONE") != 0) |
| 86 | printk(KERN_WARNING "radeonfb: Unknown OF display-type: %s\n", |
| 87 | pmt); |
| 88 | return MT_NONE; |
| 89 | } |
| 90 | |
| 91 | for (i = 0; propnames[i] != NULL; ++i) { |
Stephen Rothwell | 40cd3a4 | 2007-05-01 13:54:02 +1000 | [diff] [blame] | 92 | pedid = of_get_property(dp, propnames[i], NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | if (pedid != NULL) |
| 94 | break; |
| 95 | } |
| 96 | /* We didn't find the EDID in the leaf node, some cards will actually |
| 97 | * put EDID1/EDID2 in the parent, look for these (typically M6 tipb). |
| 98 | * single-head cards have hdno == -1 and skip this step |
| 99 | */ |
| 100 | if (pedid == NULL && dp->parent && (hdno != -1)) |
Stephen Rothwell | 40cd3a4 | 2007-05-01 13:54:02 +1000 | [diff] [blame] | 101 | pedid = of_get_property(dp->parent, |
| 102 | (hdno == 0) ? "EDID1" : "EDID2", NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | if (pedid == NULL && dp->parent && (hdno == 0)) |
Stephen Rothwell | 40cd3a4 | 2007-05-01 13:54:02 +1000 | [diff] [blame] | 104 | pedid = of_get_property(dp->parent, "EDID", NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 105 | if (pedid == NULL) |
| 106 | return mt; |
| 107 | |
Alexey Dobriyan | bfba7b3 | 2006-12-08 02:40:46 -0800 | [diff] [blame] | 108 | tmp = kmemdup(pedid, EDID_LENGTH, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | if (!tmp) |
| 110 | return mt; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | *out_EDID = tmp; |
| 112 | return mt; |
| 113 | } |
| 114 | |
| 115 | static int __devinit radeon_probe_OF_head(struct radeonfb_info *rinfo, int head_no, |
| 116 | u8 **out_EDID) |
| 117 | { |
| 118 | struct device_node *dp; |
| 119 | |
Jean Delvare | bc3bf46 | 2008-04-28 02:15:13 -0700 | [diff] [blame] | 120 | pr_debug("radeon_probe_OF_head\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | |
| 122 | dp = rinfo->of_node; |
| 123 | while (dp == NULL) |
| 124 | return MT_NONE; |
| 125 | |
| 126 | if (rinfo->has_CRTC2) { |
Jeremy Kerr | b04e3dd | 2006-07-12 15:40:40 +1000 | [diff] [blame] | 127 | const char *pname; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | int len, second = 0; |
| 129 | |
| 130 | dp = dp->child; |
| 131 | do { |
| 132 | if (!dp) |
| 133 | return MT_NONE; |
Stephen Rothwell | 40cd3a4 | 2007-05-01 13:54:02 +1000 | [diff] [blame] | 134 | pname = of_get_property(dp, "name", NULL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 135 | if (!pname) |
| 136 | return MT_NONE; |
| 137 | len = strlen(pname); |
Jean Delvare | bc3bf46 | 2008-04-28 02:15:13 -0700 | [diff] [blame] | 138 | pr_debug("head: %s (letter: %c, head_no: %d)\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 139 | pname, pname[len-1], head_no); |
| 140 | if (pname[len-1] == 'A' && head_no == 0) { |
| 141 | int mt = radeon_parse_montype_prop(dp, out_EDID, 0); |
| 142 | /* Maybe check for LVDS_GEN_CNTL here ? I need to check out |
| 143 | * what OF does when booting with lid closed |
| 144 | */ |
| 145 | if (mt == MT_DFP && rinfo->is_mobility) |
| 146 | mt = MT_LCD; |
| 147 | return mt; |
| 148 | } else if (pname[len-1] == 'B' && head_no == 1) |
| 149 | return radeon_parse_montype_prop(dp, out_EDID, 1); |
| 150 | second = 1; |
| 151 | dp = dp->sibling; |
| 152 | } while(!second); |
| 153 | } else { |
| 154 | if (head_no > 0) |
| 155 | return MT_NONE; |
| 156 | return radeon_parse_montype_prop(dp, out_EDID, -1); |
| 157 | } |
| 158 | return MT_NONE; |
| 159 | } |
David S. Miller | 9f47df2 | 2007-03-29 01:33:46 -0700 | [diff] [blame] | 160 | #endif /* CONFIG_PPC_OF || CONFIG_SPARC */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | |
| 162 | |
| 163 | static int __devinit radeon_get_panel_info_BIOS(struct radeonfb_info *rinfo) |
| 164 | { |
| 165 | unsigned long tmp, tmp0; |
| 166 | char stmp[30]; |
| 167 | int i; |
| 168 | |
| 169 | if (!rinfo->bios_seg) |
| 170 | return 0; |
| 171 | |
| 172 | if (!(tmp = BIOS_IN16(rinfo->fp_bios_start + 0x40))) { |
| 173 | printk(KERN_ERR "radeonfb: Failed to detect DFP panel info using BIOS\n"); |
| 174 | rinfo->panel_info.pwr_delay = 200; |
| 175 | return 0; |
| 176 | } |
| 177 | |
| 178 | for(i=0; i<24; i++) |
| 179 | stmp[i] = BIOS_IN8(tmp+i+1); |
| 180 | stmp[24] = 0; |
| 181 | printk("radeonfb: panel ID string: %s\n", stmp); |
| 182 | rinfo->panel_info.xres = BIOS_IN16(tmp + 25); |
| 183 | rinfo->panel_info.yres = BIOS_IN16(tmp + 27); |
| 184 | printk("radeonfb: detected LVDS panel size from BIOS: %dx%d\n", |
| 185 | rinfo->panel_info.xres, rinfo->panel_info.yres); |
| 186 | |
| 187 | rinfo->panel_info.pwr_delay = BIOS_IN16(tmp + 44); |
Jean Delvare | bc3bf46 | 2008-04-28 02:15:13 -0700 | [diff] [blame] | 188 | pr_debug("BIOS provided panel power delay: %d\n", rinfo->panel_info.pwr_delay); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | if (rinfo->panel_info.pwr_delay > 2000 || rinfo->panel_info.pwr_delay <= 0) |
| 190 | rinfo->panel_info.pwr_delay = 2000; |
| 191 | |
| 192 | /* |
| 193 | * Some panels only work properly with some divider combinations |
| 194 | */ |
| 195 | rinfo->panel_info.ref_divider = BIOS_IN16(tmp + 46); |
| 196 | rinfo->panel_info.post_divider = BIOS_IN8(tmp + 48); |
| 197 | rinfo->panel_info.fbk_divider = BIOS_IN16(tmp + 49); |
| 198 | if (rinfo->panel_info.ref_divider != 0 && |
| 199 | rinfo->panel_info.fbk_divider > 3) { |
| 200 | rinfo->panel_info.use_bios_dividers = 1; |
| 201 | printk(KERN_INFO "radeondb: BIOS provided dividers will be used\n"); |
Jean Delvare | bc3bf46 | 2008-04-28 02:15:13 -0700 | [diff] [blame] | 202 | pr_debug("ref_divider = %x\n", rinfo->panel_info.ref_divider); |
| 203 | pr_debug("post_divider = %x\n", rinfo->panel_info.post_divider); |
| 204 | pr_debug("fbk_divider = %x\n", rinfo->panel_info.fbk_divider); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | } |
Jean Delvare | bc3bf46 | 2008-04-28 02:15:13 -0700 | [diff] [blame] | 206 | pr_debug("Scanning BIOS table ...\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | for(i=0; i<32; i++) { |
| 208 | tmp0 = BIOS_IN16(tmp+64+i*2); |
| 209 | if (tmp0 == 0) |
| 210 | break; |
Jean Delvare | bc3bf46 | 2008-04-28 02:15:13 -0700 | [diff] [blame] | 211 | pr_debug(" %d x %d\n", BIOS_IN16(tmp0), BIOS_IN16(tmp0+2)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | if ((BIOS_IN16(tmp0) == rinfo->panel_info.xres) && |
| 213 | (BIOS_IN16(tmp0+2) == rinfo->panel_info.yres)) { |
| 214 | rinfo->panel_info.hblank = (BIOS_IN16(tmp0+17) - BIOS_IN16(tmp0+19)) * 8; |
| 215 | rinfo->panel_info.hOver_plus = ((BIOS_IN16(tmp0+21) - |
| 216 | BIOS_IN16(tmp0+19) -1) * 8) & 0x7fff; |
| 217 | rinfo->panel_info.hSync_width = BIOS_IN8(tmp0+23) * 8; |
| 218 | rinfo->panel_info.vblank = BIOS_IN16(tmp0+24) - BIOS_IN16(tmp0+26); |
| 219 | rinfo->panel_info.vOver_plus = (BIOS_IN16(tmp0+28) & 0x7ff) - BIOS_IN16(tmp0+26); |
| 220 | rinfo->panel_info.vSync_width = (BIOS_IN16(tmp0+28) & 0xf800) >> 11; |
| 221 | rinfo->panel_info.clock = BIOS_IN16(tmp0+9); |
| 222 | /* Assume high active syncs for now until ATI tells me more... maybe we |
| 223 | * can probe register values here ? |
| 224 | */ |
| 225 | rinfo->panel_info.hAct_high = 1; |
| 226 | rinfo->panel_info.vAct_high = 1; |
| 227 | /* Mark panel infos valid */ |
| 228 | rinfo->panel_info.valid = 1; |
| 229 | |
Jean Delvare | bc3bf46 | 2008-04-28 02:15:13 -0700 | [diff] [blame] | 230 | pr_debug("Found panel in BIOS table:\n"); |
| 231 | pr_debug(" hblank: %d\n", rinfo->panel_info.hblank); |
| 232 | pr_debug(" hOver_plus: %d\n", rinfo->panel_info.hOver_plus); |
| 233 | pr_debug(" hSync_width: %d\n", rinfo->panel_info.hSync_width); |
| 234 | pr_debug(" vblank: %d\n", rinfo->panel_info.vblank); |
| 235 | pr_debug(" vOver_plus: %d\n", rinfo->panel_info.vOver_plus); |
| 236 | pr_debug(" vSync_width: %d\n", rinfo->panel_info.vSync_width); |
| 237 | pr_debug(" clock: %d\n", rinfo->panel_info.clock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | |
| 239 | return 1; |
| 240 | } |
| 241 | } |
Jean Delvare | bc3bf46 | 2008-04-28 02:15:13 -0700 | [diff] [blame] | 242 | pr_debug("Didn't find panel in BIOS table !\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | |
| 244 | return 0; |
| 245 | } |
| 246 | |
| 247 | /* Try to extract the connector informations from the BIOS. This |
| 248 | * doesn't quite work yet, but it's output is still useful for |
| 249 | * debugging |
| 250 | */ |
| 251 | static void __devinit radeon_parse_connector_info(struct radeonfb_info *rinfo) |
| 252 | { |
| 253 | int offset, chips, connectors, tmp, i, conn, type; |
| 254 | |
| 255 | static char* __conn_type_table[16] = { |
| 256 | "NONE", "Proprietary", "CRT", "DVI-I", "DVI-D", "Unknown", "Unknown", |
| 257 | "Unknown", "Unknown", "Unknown", "Unknown", "Unknown", "Unknown", |
| 258 | "Unknown", "Unknown", "Unknown" |
| 259 | }; |
| 260 | |
| 261 | if (!rinfo->bios_seg) |
| 262 | return; |
| 263 | |
| 264 | offset = BIOS_IN16(rinfo->fp_bios_start + 0x50); |
| 265 | if (offset == 0) { |
| 266 | printk(KERN_WARNING "radeonfb: No connector info table detected\n"); |
| 267 | return; |
| 268 | } |
| 269 | |
| 270 | /* Don't do much more at this point but displaying the data if |
| 271 | * DEBUG is enabled |
| 272 | */ |
| 273 | chips = BIOS_IN8(offset++) >> 4; |
Jean Delvare | bc3bf46 | 2008-04-28 02:15:13 -0700 | [diff] [blame] | 274 | pr_debug("%d chips in connector info\n", chips); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | for (i = 0; i < chips; i++) { |
| 276 | tmp = BIOS_IN8(offset++); |
| 277 | connectors = tmp & 0x0f; |
Jean Delvare | bc3bf46 | 2008-04-28 02:15:13 -0700 | [diff] [blame] | 278 | pr_debug(" - chip %d has %d connectors\n", tmp >> 4, connectors); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | for (conn = 0; ; conn++) { |
| 280 | tmp = BIOS_IN16(offset); |
| 281 | if (tmp == 0) |
| 282 | break; |
| 283 | offset += 2; |
| 284 | type = (tmp >> 12) & 0x0f; |
Jean Delvare | bc3bf46 | 2008-04-28 02:15:13 -0700 | [diff] [blame] | 285 | pr_debug(" * connector %d of type %d (%s) : %04x\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | conn, type, __conn_type_table[type], tmp); |
| 287 | } |
| 288 | } |
| 289 | } |
| 290 | |
| 291 | |
| 292 | /* |
| 293 | * Probe physical connection of a CRT. This code comes from XFree |
| 294 | * as well and currently is only implemented for the CRT DAC, the |
| 295 | * code for the TVDAC is commented out in XFree as "non working" |
| 296 | */ |
| 297 | static int __devinit radeon_crt_is_connected(struct radeonfb_info *rinfo, int is_crt_dac) |
| 298 | { |
| 299 | int connected = 0; |
| 300 | |
| 301 | /* the monitor either wasn't connected or it is a non-DDC CRT. |
| 302 | * try to probe it |
| 303 | */ |
| 304 | if (is_crt_dac) { |
| 305 | unsigned long ulOrigVCLK_ECP_CNTL; |
| 306 | unsigned long ulOrigDAC_CNTL; |
| 307 | unsigned long ulOrigDAC_EXT_CNTL; |
| 308 | unsigned long ulOrigCRTC_EXT_CNTL; |
| 309 | unsigned long ulData; |
| 310 | unsigned long ulMask; |
| 311 | |
| 312 | ulOrigVCLK_ECP_CNTL = INPLL(VCLK_ECP_CNTL); |
| 313 | |
| 314 | ulData = ulOrigVCLK_ECP_CNTL; |
| 315 | ulData &= ~(PIXCLK_ALWAYS_ONb |
| 316 | | PIXCLK_DAC_ALWAYS_ONb); |
| 317 | ulMask = ~(PIXCLK_ALWAYS_ONb |
| 318 | | PIXCLK_DAC_ALWAYS_ONb); |
| 319 | OUTPLLP(VCLK_ECP_CNTL, ulData, ulMask); |
| 320 | |
| 321 | ulOrigCRTC_EXT_CNTL = INREG(CRTC_EXT_CNTL); |
| 322 | ulData = ulOrigCRTC_EXT_CNTL; |
| 323 | ulData |= CRTC_CRT_ON; |
| 324 | OUTREG(CRTC_EXT_CNTL, ulData); |
| 325 | |
| 326 | ulOrigDAC_EXT_CNTL = INREG(DAC_EXT_CNTL); |
| 327 | ulData = ulOrigDAC_EXT_CNTL; |
| 328 | ulData &= ~DAC_FORCE_DATA_MASK; |
| 329 | ulData |= (DAC_FORCE_BLANK_OFF_EN |
| 330 | |DAC_FORCE_DATA_EN |
| 331 | |DAC_FORCE_DATA_SEL_MASK); |
| 332 | if ((rinfo->family == CHIP_FAMILY_RV250) || |
| 333 | (rinfo->family == CHIP_FAMILY_RV280)) |
| 334 | ulData |= (0x01b6 << DAC_FORCE_DATA_SHIFT); |
| 335 | else |
| 336 | ulData |= (0x01ac << DAC_FORCE_DATA_SHIFT); |
| 337 | |
| 338 | OUTREG(DAC_EXT_CNTL, ulData); |
| 339 | |
| 340 | ulOrigDAC_CNTL = INREG(DAC_CNTL); |
| 341 | ulData = ulOrigDAC_CNTL; |
| 342 | ulData |= DAC_CMP_EN; |
| 343 | ulData &= ~(DAC_RANGE_CNTL_MASK |
| 344 | | DAC_PDWN); |
| 345 | ulData |= 0x2; |
| 346 | OUTREG(DAC_CNTL, ulData); |
| 347 | |
| 348 | mdelay(1); |
| 349 | |
| 350 | ulData = INREG(DAC_CNTL); |
| 351 | connected = (DAC_CMP_OUTPUT & ulData) ? 1 : 0; |
| 352 | |
| 353 | ulData = ulOrigVCLK_ECP_CNTL; |
| 354 | ulMask = 0xFFFFFFFFL; |
| 355 | OUTPLLP(VCLK_ECP_CNTL, ulData, ulMask); |
| 356 | |
| 357 | OUTREG(DAC_CNTL, ulOrigDAC_CNTL ); |
| 358 | OUTREG(DAC_EXT_CNTL, ulOrigDAC_EXT_CNTL ); |
| 359 | OUTREG(CRTC_EXT_CNTL, ulOrigCRTC_EXT_CNTL); |
| 360 | } |
| 361 | |
| 362 | return connected ? MT_CRT : MT_NONE; |
| 363 | } |
| 364 | |
| 365 | /* |
| 366 | * Parse the "monitor_layout" string if any. This code is mostly |
| 367 | * copied from XFree's radeon driver |
| 368 | */ |
| 369 | static int __devinit radeon_parse_monitor_layout(struct radeonfb_info *rinfo, |
| 370 | const char *monitor_layout) |
| 371 | { |
| 372 | char s1[5], s2[5]; |
| 373 | int i = 0, second = 0; |
| 374 | const char *s; |
| 375 | |
| 376 | if (!monitor_layout) |
| 377 | return 0; |
| 378 | |
| 379 | s = monitor_layout; |
| 380 | do { |
| 381 | switch(*s) { |
| 382 | case ',': |
| 383 | s1[i] = '\0'; |
| 384 | i = 0; |
| 385 | second = 1; |
| 386 | break; |
| 387 | case ' ': |
| 388 | case '\0': |
| 389 | break; |
| 390 | default: |
| 391 | if (i > 4) |
| 392 | break; |
| 393 | if (second) |
| 394 | s2[i] = *s; |
| 395 | else |
| 396 | s1[i] = *s; |
| 397 | i++; |
| 398 | } |
Antonino A. Daplas | ed62178 | 2006-03-11 03:27:28 -0800 | [diff] [blame] | 399 | |
| 400 | if (i > 4) |
| 401 | i = 4; |
| 402 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 403 | } while (*s++); |
| 404 | if (second) |
| 405 | s2[i] = 0; |
| 406 | else { |
| 407 | s1[i] = 0; |
| 408 | s2[0] = 0; |
| 409 | } |
| 410 | if (strcmp(s1, "CRT") == 0) |
| 411 | rinfo->mon1_type = MT_CRT; |
| 412 | else if (strcmp(s1, "TMDS") == 0) |
| 413 | rinfo->mon1_type = MT_DFP; |
| 414 | else if (strcmp(s1, "LVDS") == 0) |
| 415 | rinfo->mon1_type = MT_LCD; |
| 416 | |
| 417 | if (strcmp(s2, "CRT") == 0) |
| 418 | rinfo->mon2_type = MT_CRT; |
| 419 | else if (strcmp(s2, "TMDS") == 0) |
| 420 | rinfo->mon2_type = MT_DFP; |
| 421 | else if (strcmp(s2, "LVDS") == 0) |
| 422 | rinfo->mon2_type = MT_LCD; |
| 423 | |
| 424 | return 1; |
| 425 | } |
| 426 | |
| 427 | /* |
| 428 | * Probe display on both primary and secondary card's connector (if any) |
| 429 | * by various available techniques (i2c, OF device tree, BIOS, ...) and |
Adrian Bunk | 943ffb5 | 2006-01-10 00:10:13 +0100 | [diff] [blame] | 430 | * try to retrieve EDID. The algorithm here comes from XFree's radeon |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 431 | * driver |
| 432 | */ |
| 433 | void __devinit radeon_probe_screens(struct radeonfb_info *rinfo, |
| 434 | const char *monitor_layout, int ignore_edid) |
| 435 | { |
| 436 | #ifdef CONFIG_FB_RADEON_I2C |
| 437 | int ddc_crt2_used = 0; |
| 438 | #endif |
| 439 | int tmp, i; |
| 440 | |
| 441 | radeon_parse_connector_info(rinfo); |
| 442 | |
| 443 | if (radeon_parse_monitor_layout(rinfo, monitor_layout)) { |
| 444 | |
| 445 | /* |
| 446 | * If user specified a monitor_layout option, use it instead |
| 447 | * of auto-detecting. Maybe we should only use this argument |
| 448 | * on the first radeon card probed or provide a way to specify |
| 449 | * a layout for each card ? |
| 450 | */ |
| 451 | |
Jean Delvare | bc3bf46 | 2008-04-28 02:15:13 -0700 | [diff] [blame] | 452 | pr_debug("Using specified monitor layout: %s", monitor_layout); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 453 | #ifdef CONFIG_FB_RADEON_I2C |
| 454 | if (!ignore_edid) { |
| 455 | if (rinfo->mon1_type != MT_NONE) |
| 456 | if (!radeon_probe_i2c_connector(rinfo, ddc_dvi, &rinfo->mon1_EDID)) { |
| 457 | radeon_probe_i2c_connector(rinfo, ddc_crt2, &rinfo->mon1_EDID); |
| 458 | ddc_crt2_used = 1; |
| 459 | } |
| 460 | if (rinfo->mon2_type != MT_NONE) |
| 461 | if (!radeon_probe_i2c_connector(rinfo, ddc_vga, &rinfo->mon2_EDID) && |
| 462 | !ddc_crt2_used) |
| 463 | radeon_probe_i2c_connector(rinfo, ddc_crt2, &rinfo->mon2_EDID); |
| 464 | } |
| 465 | #endif /* CONFIG_FB_RADEON_I2C */ |
| 466 | if (rinfo->mon1_type == MT_NONE) { |
| 467 | if (rinfo->mon2_type != MT_NONE) { |
| 468 | rinfo->mon1_type = rinfo->mon2_type; |
| 469 | rinfo->mon1_EDID = rinfo->mon2_EDID; |
| 470 | } else { |
| 471 | rinfo->mon1_type = MT_CRT; |
| 472 | printk(KERN_INFO "radeonfb: No valid monitor, assuming CRT on first port\n"); |
| 473 | } |
| 474 | rinfo->mon2_type = MT_NONE; |
| 475 | rinfo->mon2_EDID = NULL; |
| 476 | } |
| 477 | } else { |
| 478 | /* |
| 479 | * Auto-detecting display type (well... trying to ...) |
| 480 | */ |
| 481 | |
Jean Delvare | bc3bf46 | 2008-04-28 02:15:13 -0700 | [diff] [blame] | 482 | pr_debug("Starting monitor auto detection...\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 483 | |
Jean Delvare | b0313f8 | 2008-04-28 02:15:12 -0700 | [diff] [blame] | 484 | #if defined(DEBUG) && defined(CONFIG_FB_RADEON_I2C) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | { |
| 486 | u8 *EDIDs[4] = { NULL, NULL, NULL, NULL }; |
| 487 | int mon_types[4] = {MT_NONE, MT_NONE, MT_NONE, MT_NONE}; |
| 488 | int i; |
| 489 | |
| 490 | for (i = 0; i < 4; i++) |
| 491 | mon_types[i] = radeon_probe_i2c_connector(rinfo, |
| 492 | i+1, &EDIDs[i]); |
| 493 | } |
| 494 | #endif /* DEBUG */ |
| 495 | /* |
| 496 | * Old single head cards |
| 497 | */ |
| 498 | if (!rinfo->has_CRTC2) { |
David S. Miller | 9f47df2 | 2007-03-29 01:33:46 -0700 | [diff] [blame] | 499 | #if defined(CONFIG_PPC_OF) || defined(CONFIG_SPARC) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 500 | if (rinfo->mon1_type == MT_NONE) |
| 501 | rinfo->mon1_type = radeon_probe_OF_head(rinfo, 0, |
| 502 | &rinfo->mon1_EDID); |
David S. Miller | 9f47df2 | 2007-03-29 01:33:46 -0700 | [diff] [blame] | 503 | #endif /* CONFIG_PPC_OF || CONFIG_SPARC */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | #ifdef CONFIG_FB_RADEON_I2C |
| 505 | if (rinfo->mon1_type == MT_NONE) |
| 506 | rinfo->mon1_type = |
| 507 | radeon_probe_i2c_connector(rinfo, ddc_dvi, |
| 508 | &rinfo->mon1_EDID); |
| 509 | if (rinfo->mon1_type == MT_NONE) |
| 510 | rinfo->mon1_type = |
| 511 | radeon_probe_i2c_connector(rinfo, ddc_vga, |
| 512 | &rinfo->mon1_EDID); |
| 513 | if (rinfo->mon1_type == MT_NONE) |
| 514 | rinfo->mon1_type = |
| 515 | radeon_probe_i2c_connector(rinfo, ddc_crt2, |
| 516 | &rinfo->mon1_EDID); |
| 517 | #endif /* CONFIG_FB_RADEON_I2C */ |
| 518 | if (rinfo->mon1_type == MT_NONE) |
| 519 | rinfo->mon1_type = MT_CRT; |
| 520 | goto bail; |
| 521 | } |
| 522 | |
| 523 | /* |
| 524 | * Check for cards with reversed DACs or TMDS controllers using BIOS |
| 525 | */ |
| 526 | if (rinfo->bios_seg && |
| 527 | (tmp = BIOS_IN16(rinfo->fp_bios_start + 0x50))) { |
| 528 | for (i = 1; i < 4; i++) { |
| 529 | unsigned int tmp0; |
| 530 | |
| 531 | if (!BIOS_IN8(tmp + i*2) && i > 1) |
| 532 | break; |
| 533 | tmp0 = BIOS_IN16(tmp + i*2); |
| 534 | if ((!(tmp0 & 0x01)) && (((tmp0 >> 8) & 0x0f) == ddc_dvi)) { |
| 535 | rinfo->reversed_DAC = 1; |
| 536 | printk(KERN_INFO "radeonfb: Reversed DACs detected\n"); |
| 537 | } |
| 538 | if ((((tmp0 >> 8) & 0x0f) == ddc_dvi) && ((tmp0 >> 4) & 0x01)) { |
| 539 | rinfo->reversed_TMDS = 1; |
| 540 | printk(KERN_INFO "radeonfb: Reversed TMDS detected\n"); |
| 541 | } |
| 542 | } |
| 543 | } |
| 544 | |
| 545 | /* |
| 546 | * Probe primary head (DVI or laptop internal panel) |
| 547 | */ |
David S. Miller | 9f47df2 | 2007-03-29 01:33:46 -0700 | [diff] [blame] | 548 | #if defined(CONFIG_PPC_OF) || defined(CONFIG_SPARC) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 549 | if (rinfo->mon1_type == MT_NONE) |
| 550 | rinfo->mon1_type = radeon_probe_OF_head(rinfo, 0, |
| 551 | &rinfo->mon1_EDID); |
David S. Miller | 9f47df2 | 2007-03-29 01:33:46 -0700 | [diff] [blame] | 552 | #endif /* CONFIG_PPC_OF || CONFIG_SPARC */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 553 | #ifdef CONFIG_FB_RADEON_I2C |
| 554 | if (rinfo->mon1_type == MT_NONE) |
| 555 | rinfo->mon1_type = radeon_probe_i2c_connector(rinfo, ddc_dvi, |
| 556 | &rinfo->mon1_EDID); |
| 557 | if (rinfo->mon1_type == MT_NONE) { |
| 558 | rinfo->mon1_type = radeon_probe_i2c_connector(rinfo, ddc_crt2, |
| 559 | &rinfo->mon1_EDID); |
| 560 | if (rinfo->mon1_type != MT_NONE) |
| 561 | ddc_crt2_used = 1; |
| 562 | } |
| 563 | #endif /* CONFIG_FB_RADEON_I2C */ |
| 564 | if (rinfo->mon1_type == MT_NONE && rinfo->is_mobility && |
| 565 | ((rinfo->bios_seg && (INREG(BIOS_4_SCRATCH) & 4)) |
| 566 | || (INREG(LVDS_GEN_CNTL) & LVDS_ON))) { |
| 567 | rinfo->mon1_type = MT_LCD; |
| 568 | printk("Non-DDC laptop panel detected\n"); |
| 569 | } |
| 570 | if (rinfo->mon1_type == MT_NONE) |
| 571 | rinfo->mon1_type = radeon_crt_is_connected(rinfo, rinfo->reversed_DAC); |
| 572 | |
| 573 | /* |
| 574 | * Probe secondary head (mostly VGA, can be DVI) |
| 575 | */ |
David S. Miller | 9f47df2 | 2007-03-29 01:33:46 -0700 | [diff] [blame] | 576 | #if defined(CONFIG_PPC_OF) || defined(CONFIG_SPARC) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 577 | if (rinfo->mon2_type == MT_NONE) |
| 578 | rinfo->mon2_type = radeon_probe_OF_head(rinfo, 1, |
| 579 | &rinfo->mon2_EDID); |
David S. Miller | 9f47df2 | 2007-03-29 01:33:46 -0700 | [diff] [blame] | 580 | #endif /* CONFIG_PPC_OF || defined(CONFIG_SPARC) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 581 | #ifdef CONFIG_FB_RADEON_I2C |
| 582 | if (rinfo->mon2_type == MT_NONE) |
| 583 | rinfo->mon2_type = radeon_probe_i2c_connector(rinfo, ddc_vga, |
| 584 | &rinfo->mon2_EDID); |
| 585 | if (rinfo->mon2_type == MT_NONE && !ddc_crt2_used) |
| 586 | rinfo->mon2_type = radeon_probe_i2c_connector(rinfo, ddc_crt2, |
| 587 | &rinfo->mon2_EDID); |
| 588 | #endif /* CONFIG_FB_RADEON_I2C */ |
| 589 | if (rinfo->mon2_type == MT_NONE) |
| 590 | rinfo->mon2_type = radeon_crt_is_connected(rinfo, !rinfo->reversed_DAC); |
| 591 | |
| 592 | /* |
| 593 | * If we only detected port 2, we swap them, if none detected, |
| 594 | * assume CRT (maybe fallback to old BIOS_SCRATCH stuff ? or look |
| 595 | * at FP registers ?) |
| 596 | */ |
| 597 | if (rinfo->mon1_type == MT_NONE) { |
| 598 | if (rinfo->mon2_type != MT_NONE) { |
| 599 | rinfo->mon1_type = rinfo->mon2_type; |
| 600 | rinfo->mon1_EDID = rinfo->mon2_EDID; |
| 601 | } else |
| 602 | rinfo->mon1_type = MT_CRT; |
| 603 | rinfo->mon2_type = MT_NONE; |
| 604 | rinfo->mon2_EDID = NULL; |
| 605 | } |
| 606 | |
| 607 | /* |
| 608 | * Deal with reversed TMDS |
| 609 | */ |
| 610 | if (rinfo->reversed_TMDS) { |
| 611 | /* Always keep internal TMDS as primary head */ |
| 612 | if (rinfo->mon1_type == MT_DFP || rinfo->mon2_type == MT_DFP) { |
| 613 | int tmp_type = rinfo->mon1_type; |
| 614 | u8 *tmp_EDID = rinfo->mon1_EDID; |
| 615 | rinfo->mon1_type = rinfo->mon2_type; |
| 616 | rinfo->mon1_EDID = rinfo->mon2_EDID; |
| 617 | rinfo->mon2_type = tmp_type; |
| 618 | rinfo->mon2_EDID = tmp_EDID; |
| 619 | if (rinfo->mon1_type == MT_CRT || rinfo->mon2_type == MT_CRT) |
| 620 | rinfo->reversed_DAC ^= 1; |
| 621 | } |
| 622 | } |
| 623 | } |
| 624 | if (ignore_edid) { |
| 625 | kfree(rinfo->mon1_EDID); |
| 626 | rinfo->mon1_EDID = NULL; |
| 627 | kfree(rinfo->mon2_EDID); |
| 628 | rinfo->mon2_EDID = NULL; |
| 629 | } |
| 630 | |
| 631 | bail: |
| 632 | printk(KERN_INFO "radeonfb: Monitor 1 type %s found\n", |
| 633 | radeon_get_mon_name(rinfo->mon1_type)); |
| 634 | if (rinfo->mon1_EDID) |
| 635 | printk(KERN_INFO "radeonfb: EDID probed\n"); |
| 636 | if (!rinfo->has_CRTC2) |
| 637 | return; |
| 638 | printk(KERN_INFO "radeonfb: Monitor 2 type %s found\n", |
| 639 | radeon_get_mon_name(rinfo->mon2_type)); |
| 640 | if (rinfo->mon2_EDID) |
| 641 | printk(KERN_INFO "radeonfb: EDID probed\n"); |
| 642 | } |
| 643 | |
| 644 | |
| 645 | /* |
| 646 | * This functions applyes any arch/model/machine specific fixups |
| 647 | * to the panel info. It may eventually alter EDID block as |
| 648 | * well or whatever is specific to a given model and not probed |
| 649 | * properly by the default code |
| 650 | */ |
| 651 | static void radeon_fixup_panel_info(struct radeonfb_info *rinfo) |
| 652 | { |
| 653 | #ifdef CONFIG_PPC_OF |
| 654 | /* |
| 655 | * LCD Flat panels should use fixed dividers, we enfore that on |
| 656 | * PPC only for now... |
| 657 | */ |
| 658 | if (!rinfo->panel_info.use_bios_dividers && rinfo->mon1_type == MT_LCD |
| 659 | && rinfo->is_mobility) { |
| 660 | int ppll_div_sel; |
| 661 | u32 ppll_divn; |
| 662 | ppll_div_sel = INREG8(CLOCK_CNTL_INDEX + 1) & 0x3; |
| 663 | radeon_pll_errata_after_index(rinfo); |
| 664 | ppll_divn = INPLL(PPLL_DIV_0 + ppll_div_sel); |
| 665 | rinfo->panel_info.ref_divider = rinfo->pll.ref_div; |
| 666 | rinfo->panel_info.fbk_divider = ppll_divn & 0x7ff; |
| 667 | rinfo->panel_info.post_divider = (ppll_divn >> 16) & 0x7; |
| 668 | rinfo->panel_info.use_bios_dividers = 1; |
| 669 | |
| 670 | printk(KERN_DEBUG "radeonfb: Using Firmware dividers 0x%08x " |
| 671 | "from PPLL %d\n", |
| 672 | rinfo->panel_info.fbk_divider | |
| 673 | (rinfo->panel_info.post_divider << 16), |
| 674 | ppll_div_sel); |
| 675 | } |
| 676 | #endif /* CONFIG_PPC_OF */ |
| 677 | } |
| 678 | |
| 679 | |
| 680 | /* |
| 681 | * Fill up panel infos from a mode definition, either returned by the EDID |
| 682 | * or from the default mode when we can't do any better |
| 683 | */ |
| 684 | static void radeon_var_to_panel_info(struct radeonfb_info *rinfo, struct fb_var_screeninfo *var) |
| 685 | { |
| 686 | rinfo->panel_info.xres = var->xres; |
| 687 | rinfo->panel_info.yres = var->yres; |
| 688 | rinfo->panel_info.clock = 100000000 / var->pixclock; |
| 689 | rinfo->panel_info.hOver_plus = var->right_margin; |
| 690 | rinfo->panel_info.hSync_width = var->hsync_len; |
| 691 | rinfo->panel_info.hblank = var->left_margin + |
| 692 | (var->right_margin + var->hsync_len); |
| 693 | rinfo->panel_info.vOver_plus = var->lower_margin; |
| 694 | rinfo->panel_info.vSync_width = var->vsync_len; |
| 695 | rinfo->panel_info.vblank = var->upper_margin + |
| 696 | (var->lower_margin + var->vsync_len); |
| 697 | rinfo->panel_info.hAct_high = |
| 698 | (var->sync & FB_SYNC_HOR_HIGH_ACT) != 0; |
| 699 | rinfo->panel_info.vAct_high = |
| 700 | (var->sync & FB_SYNC_VERT_HIGH_ACT) != 0; |
| 701 | rinfo->panel_info.valid = 1; |
| 702 | /* We use a default of 200ms for the panel power delay, |
| 703 | * I need to have a real schedule() instead of mdelay's in the panel code. |
| 704 | * we might be possible to figure out a better power delay either from |
| 705 | * MacOS OF tree or from the EDID block (proprietary extensions ?) |
| 706 | */ |
| 707 | rinfo->panel_info.pwr_delay = 200; |
| 708 | } |
| 709 | |
| 710 | static void radeon_videomode_to_var(struct fb_var_screeninfo *var, |
| 711 | const struct fb_videomode *mode) |
| 712 | { |
| 713 | var->xres = mode->xres; |
| 714 | var->yres = mode->yres; |
| 715 | var->xres_virtual = mode->xres; |
| 716 | var->yres_virtual = mode->yres; |
| 717 | var->xoffset = 0; |
| 718 | var->yoffset = 0; |
| 719 | var->pixclock = mode->pixclock; |
| 720 | var->left_margin = mode->left_margin; |
| 721 | var->right_margin = mode->right_margin; |
| 722 | var->upper_margin = mode->upper_margin; |
| 723 | var->lower_margin = mode->lower_margin; |
| 724 | var->hsync_len = mode->hsync_len; |
| 725 | var->vsync_len = mode->vsync_len; |
| 726 | var->sync = mode->sync; |
| 727 | var->vmode = mode->vmode; |
| 728 | } |
| 729 | |
| 730 | /* |
| 731 | * Build the modedb for head 1 (head 2 will come later), check panel infos |
| 732 | * from either BIOS or EDID, and pick up the default mode |
| 733 | */ |
| 734 | void __devinit radeon_check_modes(struct radeonfb_info *rinfo, const char *mode_option) |
| 735 | { |
| 736 | struct fb_info * info = rinfo->info; |
| 737 | int has_default_mode = 0; |
| 738 | |
| 739 | /* |
| 740 | * Fill default var first |
| 741 | */ |
| 742 | info->var = radeonfb_default_var; |
| 743 | INIT_LIST_HEAD(&info->modelist); |
| 744 | |
| 745 | /* |
| 746 | * First check out what BIOS has to say |
| 747 | */ |
| 748 | if (rinfo->mon1_type == MT_LCD) |
| 749 | radeon_get_panel_info_BIOS(rinfo); |
| 750 | |
| 751 | /* |
| 752 | * Parse EDID detailed timings and deduce panel infos if any. Right now |
| 753 | * we only deal with first entry returned by parse_EDID, we may do better |
| 754 | * some day... |
| 755 | */ |
| 756 | if (!rinfo->panel_info.use_bios_dividers && rinfo->mon1_type != MT_CRT |
| 757 | && rinfo->mon1_EDID) { |
| 758 | struct fb_var_screeninfo var; |
Jean Delvare | bc3bf46 | 2008-04-28 02:15:13 -0700 | [diff] [blame] | 759 | pr_debug("Parsing EDID data for panel info\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 760 | if (fb_parse_edid(rinfo->mon1_EDID, &var) == 0) { |
| 761 | if (var.xres >= rinfo->panel_info.xres && |
| 762 | var.yres >= rinfo->panel_info.yres) |
| 763 | radeon_var_to_panel_info(rinfo, &var); |
| 764 | } |
| 765 | } |
| 766 | |
| 767 | /* |
| 768 | * Do any additional platform/arch fixups to the panel infos |
| 769 | */ |
| 770 | radeon_fixup_panel_info(rinfo); |
| 771 | |
| 772 | /* |
| 773 | * If we have some valid panel infos, we setup the default mode based on |
| 774 | * those |
| 775 | */ |
| 776 | if (rinfo->mon1_type != MT_CRT && rinfo->panel_info.valid) { |
| 777 | struct fb_var_screeninfo *var = &info->var; |
| 778 | |
Jean Delvare | bc3bf46 | 2008-04-28 02:15:13 -0700 | [diff] [blame] | 779 | pr_debug("Setting up default mode based on panel info\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 780 | var->xres = rinfo->panel_info.xres; |
| 781 | var->yres = rinfo->panel_info.yres; |
| 782 | var->xres_virtual = rinfo->panel_info.xres; |
| 783 | var->yres_virtual = rinfo->panel_info.yres; |
| 784 | var->xoffset = var->yoffset = 0; |
| 785 | var->bits_per_pixel = 8; |
| 786 | var->pixclock = 100000000 / rinfo->panel_info.clock; |
| 787 | var->left_margin = (rinfo->panel_info.hblank - rinfo->panel_info.hOver_plus |
| 788 | - rinfo->panel_info.hSync_width); |
| 789 | var->right_margin = rinfo->panel_info.hOver_plus; |
| 790 | var->upper_margin = (rinfo->panel_info.vblank - rinfo->panel_info.vOver_plus |
| 791 | - rinfo->panel_info.vSync_width); |
| 792 | var->lower_margin = rinfo->panel_info.vOver_plus; |
| 793 | var->hsync_len = rinfo->panel_info.hSync_width; |
| 794 | var->vsync_len = rinfo->panel_info.vSync_width; |
| 795 | var->sync = 0; |
| 796 | if (rinfo->panel_info.hAct_high) |
| 797 | var->sync |= FB_SYNC_HOR_HIGH_ACT; |
| 798 | if (rinfo->panel_info.vAct_high) |
| 799 | var->sync |= FB_SYNC_VERT_HIGH_ACT; |
| 800 | var->vmode = 0; |
| 801 | has_default_mode = 1; |
| 802 | } |
| 803 | |
| 804 | /* |
| 805 | * Now build modedb from EDID |
| 806 | */ |
| 807 | if (rinfo->mon1_EDID) { |
| 808 | fb_edid_to_monspecs(rinfo->mon1_EDID, &info->monspecs); |
| 809 | fb_videomode_to_modelist(info->monspecs.modedb, |
| 810 | info->monspecs.modedb_len, |
| 811 | &info->modelist); |
| 812 | rinfo->mon1_modedb = info->monspecs.modedb; |
| 813 | rinfo->mon1_dbsize = info->monspecs.modedb_len; |
| 814 | } |
| 815 | |
| 816 | |
| 817 | /* |
| 818 | * Finally, if we don't have panel infos we need to figure some (or |
| 819 | * we try to read it from card), we try to pick a default mode |
| 820 | * and create some panel infos. Whatever... |
| 821 | */ |
| 822 | if (rinfo->mon1_type != MT_CRT && !rinfo->panel_info.valid) { |
| 823 | struct fb_videomode *modedb; |
| 824 | int dbsize; |
| 825 | char modename[32]; |
| 826 | |
Jean Delvare | bc3bf46 | 2008-04-28 02:15:13 -0700 | [diff] [blame] | 827 | pr_debug("Guessing panel info...\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 828 | if (rinfo->panel_info.xres == 0 || rinfo->panel_info.yres == 0) { |
| 829 | u32 tmp = INREG(FP_HORZ_STRETCH) & HORZ_PANEL_SIZE; |
| 830 | rinfo->panel_info.xres = ((tmp >> HORZ_PANEL_SHIFT) + 1) * 8; |
| 831 | tmp = INREG(FP_VERT_STRETCH) & VERT_PANEL_SIZE; |
| 832 | rinfo->panel_info.yres = (tmp >> VERT_PANEL_SHIFT) + 1; |
| 833 | } |
| 834 | if (rinfo->panel_info.xres == 0 || rinfo->panel_info.yres == 0) { |
| 835 | printk(KERN_WARNING "radeonfb: Can't find panel size, going back to CRT\n"); |
| 836 | rinfo->mon1_type = MT_CRT; |
| 837 | goto pickup_default; |
| 838 | } |
| 839 | printk(KERN_WARNING "radeonfb: Assuming panel size %dx%d\n", |
| 840 | rinfo->panel_info.xres, rinfo->panel_info.yres); |
| 841 | modedb = rinfo->mon1_modedb; |
| 842 | dbsize = rinfo->mon1_dbsize; |
| 843 | snprintf(modename, 31, "%dx%d", rinfo->panel_info.xres, rinfo->panel_info.yres); |
| 844 | if (fb_find_mode(&info->var, info, modename, |
| 845 | modedb, dbsize, NULL, 8) == 0) { |
| 846 | printk(KERN_WARNING "radeonfb: Can't find mode for panel size, going back to CRT\n"); |
| 847 | rinfo->mon1_type = MT_CRT; |
| 848 | goto pickup_default; |
| 849 | } |
| 850 | has_default_mode = 1; |
| 851 | radeon_var_to_panel_info(rinfo, &info->var); |
| 852 | } |
| 853 | |
| 854 | pickup_default: |
| 855 | /* |
| 856 | * Apply passed-in mode option if any |
| 857 | */ |
| 858 | if (mode_option) { |
| 859 | if (fb_find_mode(&info->var, info, mode_option, |
| 860 | info->monspecs.modedb, |
| 861 | info->monspecs.modedb_len, NULL, 8) != 0) |
| 862 | has_default_mode = 1; |
| 863 | } |
| 864 | |
| 865 | /* |
| 866 | * Still no mode, let's pick up a default from the db |
| 867 | */ |
| 868 | if (!has_default_mode && info->monspecs.modedb != NULL) { |
| 869 | struct fb_monspecs *specs = &info->monspecs; |
| 870 | struct fb_videomode *modedb = NULL; |
| 871 | |
| 872 | /* get preferred timing */ |
| 873 | if (specs->misc & FB_MISC_1ST_DETAIL) { |
| 874 | int i; |
| 875 | |
| 876 | for (i = 0; i < specs->modedb_len; i++) { |
| 877 | if (specs->modedb[i].flag & FB_MODE_IS_FIRST) { |
| 878 | modedb = &specs->modedb[i]; |
| 879 | break; |
| 880 | } |
| 881 | } |
| 882 | } else { |
| 883 | /* otherwise, get first mode in database */ |
| 884 | modedb = &specs->modedb[0]; |
| 885 | } |
| 886 | if (modedb != NULL) { |
| 887 | info->var.bits_per_pixel = 8; |
| 888 | radeon_videomode_to_var(&info->var, modedb); |
| 889 | has_default_mode = 1; |
| 890 | } |
| 891 | } |
| 892 | if (1) { |
| 893 | struct fb_videomode mode; |
| 894 | /* Make sure that whatever mode got selected is actually in the |
| 895 | * modelist or the kernel may die |
| 896 | */ |
| 897 | fb_var_to_videomode(&mode, &info->var); |
| 898 | fb_add_videomode(&mode, &info->modelist); |
| 899 | } |
| 900 | } |
| 901 | |
| 902 | /* |
| 903 | * The code below is used to pick up a mode in check_var and |
| 904 | * set_var. It should be made generic |
| 905 | */ |
| 906 | |
| 907 | /* |
| 908 | * This is used when looking for modes. We assign a "distance" value |
| 909 | * to a mode in the modedb depending how "close" it is from what we |
| 910 | * are looking for. |
| 911 | * Currently, we don't compare that much, we could do better but |
| 912 | * the current fbcon doesn't quite mind ;) |
| 913 | */ |
| 914 | static int radeon_compare_modes(const struct fb_var_screeninfo *var, |
| 915 | const struct fb_videomode *mode) |
| 916 | { |
| 917 | int distance = 0; |
| 918 | |
| 919 | distance = mode->yres - var->yres; |
| 920 | distance += (mode->xres - var->xres)/2; |
| 921 | return distance; |
| 922 | } |
| 923 | |
| 924 | /* |
| 925 | * This function is called by check_var, it gets the passed in mode parameter, and |
| 926 | * outputs a valid mode matching the passed-in one as closely as possible. |
| 927 | * We need something better ultimately. Things like fbcon basically pass us out |
| 928 | * current mode with xres/yres hacked, while things like XFree will actually |
| 929 | * produce a full timing that we should respect as much as possible. |
| 930 | * |
| 931 | * This is why I added the FB_ACTIVATE_FIND that is used by fbcon. Without this, |
| 932 | * we do a simple spec match, that's all. With it, we actually look for a mode in |
| 933 | * either our monitor modedb or the vesa one if none |
| 934 | * |
| 935 | */ |
| 936 | int radeon_match_mode(struct radeonfb_info *rinfo, |
| 937 | struct fb_var_screeninfo *dest, |
| 938 | const struct fb_var_screeninfo *src) |
| 939 | { |
| 940 | const struct fb_videomode *db = vesa_modes; |
| 941 | int i, dbsize = 34; |
| 942 | int has_rmx, native_db = 0; |
| 943 | int distance = INT_MAX; |
| 944 | const struct fb_videomode *candidate = NULL; |
| 945 | |
| 946 | /* Start with a copy of the requested mode */ |
| 947 | memcpy(dest, src, sizeof(struct fb_var_screeninfo)); |
| 948 | |
| 949 | /* Check if we have a modedb built from EDID */ |
| 950 | if (rinfo->mon1_modedb) { |
| 951 | db = rinfo->mon1_modedb; |
| 952 | dbsize = rinfo->mon1_dbsize; |
| 953 | native_db = 1; |
| 954 | } |
| 955 | |
| 956 | /* Check if we have a scaler allowing any fancy mode */ |
| 957 | has_rmx = rinfo->mon1_type == MT_LCD || rinfo->mon1_type == MT_DFP; |
| 958 | |
| 959 | /* If we have a scaler and are passed FB_ACTIVATE_TEST or |
| 960 | * FB_ACTIVATE_NOW, just do basic checking and return if the |
| 961 | * mode match |
| 962 | */ |
| 963 | if ((src->activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_TEST || |
| 964 | (src->activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_NOW) { |
| 965 | /* We don't have an RMX, validate timings. If we don't have |
| 966 | * monspecs, we should be paranoid and not let use go above |
| 967 | * 640x480-60, but I assume userland knows what it's doing here |
| 968 | * (though I may be proven wrong...) |
| 969 | */ |
| 970 | if (has_rmx == 0 && rinfo->mon1_modedb) |
| 971 | if (fb_validate_mode((struct fb_var_screeninfo *)src, rinfo->info)) |
| 972 | return -EINVAL; |
| 973 | return 0; |
| 974 | } |
| 975 | |
| 976 | /* Now look for a mode in the database */ |
| 977 | while (db) { |
| 978 | for (i = 0; i < dbsize; i++) { |
| 979 | int d; |
| 980 | |
| 981 | if (db[i].yres < src->yres) |
| 982 | continue; |
| 983 | if (db[i].xres < src->xres) |
| 984 | continue; |
| 985 | d = radeon_compare_modes(src, &db[i]); |
| 986 | /* If the new mode is at least as good as the previous one, |
| 987 | * then it's our new candidate |
| 988 | */ |
| 989 | if (d < distance) { |
| 990 | candidate = &db[i]; |
| 991 | distance = d; |
| 992 | } |
| 993 | } |
| 994 | db = NULL; |
| 995 | /* If we have a scaler, we allow any mode from the database */ |
| 996 | if (native_db && has_rmx) { |
| 997 | db = vesa_modes; |
| 998 | dbsize = 34; |
| 999 | native_db = 0; |
| 1000 | } |
| 1001 | } |
| 1002 | |
| 1003 | /* If we have found a match, return it */ |
| 1004 | if (candidate != NULL) { |
| 1005 | radeon_videomode_to_var(dest, candidate); |
| 1006 | return 0; |
| 1007 | } |
| 1008 | |
| 1009 | /* If we haven't and don't have a scaler, fail */ |
| 1010 | if (!has_rmx) |
| 1011 | return -EINVAL; |
| 1012 | |
| 1013 | return 0; |
| 1014 | } |