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Linux-2.6.12-rc2
[mirror_ubuntu-artful-kernel.git] / drivers / video / aty / radeon_monitor.c
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
55 #ifdef CONFIG_PPC_OF
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 };
67 u8 *pedid = NULL;
68 u8 *pmt = NULL;
69 u8 *tmp;
70 int i, mt = MT_NONE;
71
72 RTRACE("analyzing OF properties...\n");
73 pmt = (u8 *)get_property(dp, "display-type", NULL);
74 if (!pmt)
75 return MT_NONE;
76 RTRACE("display-type: %s\n", pmt);
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) {
92 pedid = (u8 *)get_property(dp, propnames[i], NULL);
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))
101 pedid = get_property(dp->parent, (hdno == 0) ? "EDID1" : "EDID2", NULL);
102 if (pedid == NULL && dp->parent && (hdno == 0))
103 pedid = get_property(dp->parent, "EDID", NULL);
104 if (pedid == NULL)
105 return mt;
106
107 tmp = (u8 *)kmalloc(EDID_LENGTH, GFP_KERNEL);
108 if (!tmp)
109 return mt;
110 memcpy(tmp, pedid, EDID_LENGTH);
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
120 RTRACE("radeon_probe_OF_head\n");
121
122 dp = rinfo->of_node;
123 while (dp == NULL)
124 return MT_NONE;
125
126 if (rinfo->has_CRTC2) {
127 char *pname;
128 int len, second = 0;
129
130 dp = dp->child;
131 do {
132 if (!dp)
133 return MT_NONE;
134 pname = (char *)get_property(dp, "name", NULL);
135 if (!pname)
136 return MT_NONE;
137 len = strlen(pname);
138 RTRACE("head: %s (letter: %c, head_no: %d)\n",
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 }
160 #endif /* CONFIG_PPC_OF */
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);
188 RTRACE("BIOS provided panel power delay: %d\n", rinfo->panel_info.pwr_delay);
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");
202 RTRACE("ref_divider = %x\n", rinfo->panel_info.ref_divider);
203 RTRACE("post_divider = %x\n", rinfo->panel_info.post_divider);
204 RTRACE("fbk_divider = %x\n", rinfo->panel_info.fbk_divider);
205 }
206 RTRACE("Scanning BIOS table ...\n");
207 for(i=0; i<32; i++) {
208 tmp0 = BIOS_IN16(tmp+64+i*2);
209 if (tmp0 == 0)
210 break;
211 RTRACE(" %d x %d\n", BIOS_IN16(tmp0), BIOS_IN16(tmp0+2));
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
230 RTRACE("Found panel in BIOS table:\n");
231 RTRACE(" hblank: %d\n", rinfo->panel_info.hblank);
232 RTRACE(" hOver_plus: %d\n", rinfo->panel_info.hOver_plus);
233 RTRACE(" hSync_width: %d\n", rinfo->panel_info.hSync_width);
234 RTRACE(" vblank: %d\n", rinfo->panel_info.vblank);
235 RTRACE(" vOver_plus: %d\n", rinfo->panel_info.vOver_plus);
236 RTRACE(" vSync_width: %d\n", rinfo->panel_info.vSync_width);
237 RTRACE(" clock: %d\n", rinfo->panel_info.clock);
238
239 return 1;
240 }
241 }
242 RTRACE("Didn't find panel in BIOS table !\n");
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;
274 RTRACE("%d chips in connector info\n", chips);
275 for (i = 0; i < chips; i++) {
276 tmp = BIOS_IN8(offset++);
277 connectors = tmp & 0x0f;
278 RTRACE(" - chip %d has %d connectors\n", tmp >> 4, connectors);
279 for (conn = 0; ; conn++) {
280 tmp = BIOS_IN16(offset);
281 if (tmp == 0)
282 break;
283 offset += 2;
284 type = (tmp >> 12) & 0x0f;
285 RTRACE(" * connector %d of type %d (%s) : %04x\n",
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 }
399 } while (*s++);
400 if (second)
401 s2[i] = 0;
402 else {
403 s1[i] = 0;
404 s2[0] = 0;
405 }
406 if (strcmp(s1, "CRT") == 0)
407 rinfo->mon1_type = MT_CRT;
408 else if (strcmp(s1, "TMDS") == 0)
409 rinfo->mon1_type = MT_DFP;
410 else if (strcmp(s1, "LVDS") == 0)
411 rinfo->mon1_type = MT_LCD;
412
413 if (strcmp(s2, "CRT") == 0)
414 rinfo->mon2_type = MT_CRT;
415 else if (strcmp(s2, "TMDS") == 0)
416 rinfo->mon2_type = MT_DFP;
417 else if (strcmp(s2, "LVDS") == 0)
418 rinfo->mon2_type = MT_LCD;
419
420 return 1;
421 }
422
423 /*
424 * Probe display on both primary and secondary card's connector (if any)
425 * by various available techniques (i2c, OF device tree, BIOS, ...) and
426 * try to retreive EDID. The algorithm here comes from XFree's radeon
427 * driver
428 */
429 void __devinit radeon_probe_screens(struct radeonfb_info *rinfo,
430 const char *monitor_layout, int ignore_edid)
431 {
432 #ifdef CONFIG_FB_RADEON_I2C
433 int ddc_crt2_used = 0;
434 #endif
435 int tmp, i;
436
437 radeon_parse_connector_info(rinfo);
438
439 if (radeon_parse_monitor_layout(rinfo, monitor_layout)) {
440
441 /*
442 * If user specified a monitor_layout option, use it instead
443 * of auto-detecting. Maybe we should only use this argument
444 * on the first radeon card probed or provide a way to specify
445 * a layout for each card ?
446 */
447
448 RTRACE("Using specified monitor layout: %s", monitor_layout);
449 #ifdef CONFIG_FB_RADEON_I2C
450 if (!ignore_edid) {
451 if (rinfo->mon1_type != MT_NONE)
452 if (!radeon_probe_i2c_connector(rinfo, ddc_dvi, &rinfo->mon1_EDID)) {
453 radeon_probe_i2c_connector(rinfo, ddc_crt2, &rinfo->mon1_EDID);
454 ddc_crt2_used = 1;
455 }
456 if (rinfo->mon2_type != MT_NONE)
457 if (!radeon_probe_i2c_connector(rinfo, ddc_vga, &rinfo->mon2_EDID) &&
458 !ddc_crt2_used)
459 radeon_probe_i2c_connector(rinfo, ddc_crt2, &rinfo->mon2_EDID);
460 }
461 #endif /* CONFIG_FB_RADEON_I2C */
462 if (rinfo->mon1_type == MT_NONE) {
463 if (rinfo->mon2_type != MT_NONE) {
464 rinfo->mon1_type = rinfo->mon2_type;
465 rinfo->mon1_EDID = rinfo->mon2_EDID;
466 } else {
467 rinfo->mon1_type = MT_CRT;
468 printk(KERN_INFO "radeonfb: No valid monitor, assuming CRT on first port\n");
469 }
470 rinfo->mon2_type = MT_NONE;
471 rinfo->mon2_EDID = NULL;
472 }
473 } else {
474 /*
475 * Auto-detecting display type (well... trying to ...)
476 */
477
478 RTRACE("Starting monitor auto detection...\n");
479
480 #if DEBUG && defined(CONFIG_FB_RADEON_I2C)
481 {
482 u8 *EDIDs[4] = { NULL, NULL, NULL, NULL };
483 int mon_types[4] = {MT_NONE, MT_NONE, MT_NONE, MT_NONE};
484 int i;
485
486 for (i = 0; i < 4; i++)
487 mon_types[i] = radeon_probe_i2c_connector(rinfo,
488 i+1, &EDIDs[i]);
489 }
490 #endif /* DEBUG */
491 /*
492 * Old single head cards
493 */
494 if (!rinfo->has_CRTC2) {
495 #ifdef CONFIG_PPC_OF
496 if (rinfo->mon1_type == MT_NONE)
497 rinfo->mon1_type = radeon_probe_OF_head(rinfo, 0,
498 &rinfo->mon1_EDID);
499 #endif /* CONFIG_PPC_OF */
500 #ifdef CONFIG_FB_RADEON_I2C
501 if (rinfo->mon1_type == MT_NONE)
502 rinfo->mon1_type =
503 radeon_probe_i2c_connector(rinfo, ddc_dvi,
504 &rinfo->mon1_EDID);
505 if (rinfo->mon1_type == MT_NONE)
506 rinfo->mon1_type =
507 radeon_probe_i2c_connector(rinfo, ddc_vga,
508 &rinfo->mon1_EDID);
509 if (rinfo->mon1_type == MT_NONE)
510 rinfo->mon1_type =
511 radeon_probe_i2c_connector(rinfo, ddc_crt2,
512 &rinfo->mon1_EDID);
513 #endif /* CONFIG_FB_RADEON_I2C */
514 if (rinfo->mon1_type == MT_NONE)
515 rinfo->mon1_type = MT_CRT;
516 goto bail;
517 }
518
519 /*
520 * Check for cards with reversed DACs or TMDS controllers using BIOS
521 */
522 if (rinfo->bios_seg &&
523 (tmp = BIOS_IN16(rinfo->fp_bios_start + 0x50))) {
524 for (i = 1; i < 4; i++) {
525 unsigned int tmp0;
526
527 if (!BIOS_IN8(tmp + i*2) && i > 1)
528 break;
529 tmp0 = BIOS_IN16(tmp + i*2);
530 if ((!(tmp0 & 0x01)) && (((tmp0 >> 8) & 0x0f) == ddc_dvi)) {
531 rinfo->reversed_DAC = 1;
532 printk(KERN_INFO "radeonfb: Reversed DACs detected\n");
533 }
534 if ((((tmp0 >> 8) & 0x0f) == ddc_dvi) && ((tmp0 >> 4) & 0x01)) {
535 rinfo->reversed_TMDS = 1;
536 printk(KERN_INFO "radeonfb: Reversed TMDS detected\n");
537 }
538 }
539 }
540
541 /*
542 * Probe primary head (DVI or laptop internal panel)
543 */
544 #ifdef CONFIG_PPC_OF
545 if (rinfo->mon1_type == MT_NONE)
546 rinfo->mon1_type = radeon_probe_OF_head(rinfo, 0,
547 &rinfo->mon1_EDID);
548 #endif /* CONFIG_PPC_OF */
549 #ifdef CONFIG_FB_RADEON_I2C
550 if (rinfo->mon1_type == MT_NONE)
551 rinfo->mon1_type = radeon_probe_i2c_connector(rinfo, ddc_dvi,
552 &rinfo->mon1_EDID);
553 if (rinfo->mon1_type == MT_NONE) {
554 rinfo->mon1_type = radeon_probe_i2c_connector(rinfo, ddc_crt2,
555 &rinfo->mon1_EDID);
556 if (rinfo->mon1_type != MT_NONE)
557 ddc_crt2_used = 1;
558 }
559 #endif /* CONFIG_FB_RADEON_I2C */
560 if (rinfo->mon1_type == MT_NONE && rinfo->is_mobility &&
561 ((rinfo->bios_seg && (INREG(BIOS_4_SCRATCH) & 4))
562 || (INREG(LVDS_GEN_CNTL) & LVDS_ON))) {
563 rinfo->mon1_type = MT_LCD;
564 printk("Non-DDC laptop panel detected\n");
565 }
566 if (rinfo->mon1_type == MT_NONE)
567 rinfo->mon1_type = radeon_crt_is_connected(rinfo, rinfo->reversed_DAC);
568
569 /*
570 * Probe secondary head (mostly VGA, can be DVI)
571 */
572 #ifdef CONFIG_PPC_OF
573 if (rinfo->mon2_type == MT_NONE)
574 rinfo->mon2_type = radeon_probe_OF_head(rinfo, 1,
575 &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 kfree(rinfo->mon1_EDID);
622 rinfo->mon1_EDID = NULL;
623 kfree(rinfo->mon2_EDID);
624 rinfo->mon2_EDID = NULL;
625 }
626
627 bail:
628 printk(KERN_INFO "radeonfb: Monitor 1 type %s found\n",
629 radeon_get_mon_name(rinfo->mon1_type));
630 if (rinfo->mon1_EDID)
631 printk(KERN_INFO "radeonfb: EDID probed\n");
632 if (!rinfo->has_CRTC2)
633 return;
634 printk(KERN_INFO "radeonfb: Monitor 2 type %s found\n",
635 radeon_get_mon_name(rinfo->mon2_type));
636 if (rinfo->mon2_EDID)
637 printk(KERN_INFO "radeonfb: EDID probed\n");
638 }
639
640
641 /*
642 * This functions applyes any arch/model/machine specific fixups
643 * to the panel info. It may eventually alter EDID block as
644 * well or whatever is specific to a given model and not probed
645 * properly by the default code
646 */
647 static void radeon_fixup_panel_info(struct radeonfb_info *rinfo)
648 {
649 #ifdef CONFIG_PPC_OF
650 /*
651 * LCD Flat panels should use fixed dividers, we enfore that on
652 * PPC only for now...
653 */
654 if (!rinfo->panel_info.use_bios_dividers && rinfo->mon1_type == MT_LCD
655 && rinfo->is_mobility) {
656 int ppll_div_sel;
657 u32 ppll_divn;
658 ppll_div_sel = INREG8(CLOCK_CNTL_INDEX + 1) & 0x3;
659 radeon_pll_errata_after_index(rinfo);
660 ppll_divn = INPLL(PPLL_DIV_0 + ppll_div_sel);
661 rinfo->panel_info.ref_divider = rinfo->pll.ref_div;
662 rinfo->panel_info.fbk_divider = ppll_divn & 0x7ff;
663 rinfo->panel_info.post_divider = (ppll_divn >> 16) & 0x7;
664 rinfo->panel_info.use_bios_dividers = 1;
665
666 printk(KERN_DEBUG "radeonfb: Using Firmware dividers 0x%08x "
667 "from PPLL %d\n",
668 rinfo->panel_info.fbk_divider |
669 (rinfo->panel_info.post_divider << 16),
670 ppll_div_sel);
671 }
672 #endif /* CONFIG_PPC_OF */
673 }
674
675
676 /*
677 * Fill up panel infos from a mode definition, either returned by the EDID
678 * or from the default mode when we can't do any better
679 */
680 static void radeon_var_to_panel_info(struct radeonfb_info *rinfo, struct fb_var_screeninfo *var)
681 {
682 rinfo->panel_info.xres = var->xres;
683 rinfo->panel_info.yres = var->yres;
684 rinfo->panel_info.clock = 100000000 / var->pixclock;
685 rinfo->panel_info.hOver_plus = var->right_margin;
686 rinfo->panel_info.hSync_width = var->hsync_len;
687 rinfo->panel_info.hblank = var->left_margin +
688 (var->right_margin + var->hsync_len);
689 rinfo->panel_info.vOver_plus = var->lower_margin;
690 rinfo->panel_info.vSync_width = var->vsync_len;
691 rinfo->panel_info.vblank = var->upper_margin +
692 (var->lower_margin + var->vsync_len);
693 rinfo->panel_info.hAct_high =
694 (var->sync & FB_SYNC_HOR_HIGH_ACT) != 0;
695 rinfo->panel_info.vAct_high =
696 (var->sync & FB_SYNC_VERT_HIGH_ACT) != 0;
697 rinfo->panel_info.valid = 1;
698 /* We use a default of 200ms for the panel power delay,
699 * I need to have a real schedule() instead of mdelay's in the panel code.
700 * we might be possible to figure out a better power delay either from
701 * MacOS OF tree or from the EDID block (proprietary extensions ?)
702 */
703 rinfo->panel_info.pwr_delay = 200;
704 }
705
706 static void radeon_videomode_to_var(struct fb_var_screeninfo *var,
707 const struct fb_videomode *mode)
708 {
709 var->xres = mode->xres;
710 var->yres = mode->yres;
711 var->xres_virtual = mode->xres;
712 var->yres_virtual = mode->yres;
713 var->xoffset = 0;
714 var->yoffset = 0;
715 var->pixclock = mode->pixclock;
716 var->left_margin = mode->left_margin;
717 var->right_margin = mode->right_margin;
718 var->upper_margin = mode->upper_margin;
719 var->lower_margin = mode->lower_margin;
720 var->hsync_len = mode->hsync_len;
721 var->vsync_len = mode->vsync_len;
722 var->sync = mode->sync;
723 var->vmode = mode->vmode;
724 }
725
726 /*
727 * Build the modedb for head 1 (head 2 will come later), check panel infos
728 * from either BIOS or EDID, and pick up the default mode
729 */
730 void __devinit radeon_check_modes(struct radeonfb_info *rinfo, const char *mode_option)
731 {
732 struct fb_info * info = rinfo->info;
733 int has_default_mode = 0;
734
735 /*
736 * Fill default var first
737 */
738 info->var = radeonfb_default_var;
739 INIT_LIST_HEAD(&info->modelist);
740
741 /*
742 * First check out what BIOS has to say
743 */
744 if (rinfo->mon1_type == MT_LCD)
745 radeon_get_panel_info_BIOS(rinfo);
746
747 /*
748 * Parse EDID detailed timings and deduce panel infos if any. Right now
749 * we only deal with first entry returned by parse_EDID, we may do better
750 * some day...
751 */
752 if (!rinfo->panel_info.use_bios_dividers && rinfo->mon1_type != MT_CRT
753 && rinfo->mon1_EDID) {
754 struct fb_var_screeninfo var;
755 RTRACE("Parsing EDID data for panel info\n");
756 if (fb_parse_edid(rinfo->mon1_EDID, &var) == 0) {
757 if (var.xres >= rinfo->panel_info.xres &&
758 var.yres >= rinfo->panel_info.yres)
759 radeon_var_to_panel_info(rinfo, &var);
760 }
761 }
762
763 /*
764 * Do any additional platform/arch fixups to the panel infos
765 */
766 radeon_fixup_panel_info(rinfo);
767
768 /*
769 * If we have some valid panel infos, we setup the default mode based on
770 * those
771 */
772 if (rinfo->mon1_type != MT_CRT && rinfo->panel_info.valid) {
773 struct fb_var_screeninfo *var = &info->var;
774
775 RTRACE("Setting up default mode based on panel info\n");
776 var->xres = rinfo->panel_info.xres;
777 var->yres = rinfo->panel_info.yres;
778 var->xres_virtual = rinfo->panel_info.xres;
779 var->yres_virtual = rinfo->panel_info.yres;
780 var->xoffset = var->yoffset = 0;
781 var->bits_per_pixel = 8;
782 var->pixclock = 100000000 / rinfo->panel_info.clock;
783 var->left_margin = (rinfo->panel_info.hblank - rinfo->panel_info.hOver_plus
784 - rinfo->panel_info.hSync_width);
785 var->right_margin = rinfo->panel_info.hOver_plus;
786 var->upper_margin = (rinfo->panel_info.vblank - rinfo->panel_info.vOver_plus
787 - rinfo->panel_info.vSync_width);
788 var->lower_margin = rinfo->panel_info.vOver_plus;
789 var->hsync_len = rinfo->panel_info.hSync_width;
790 var->vsync_len = rinfo->panel_info.vSync_width;
791 var->sync = 0;
792 if (rinfo->panel_info.hAct_high)
793 var->sync |= FB_SYNC_HOR_HIGH_ACT;
794 if (rinfo->panel_info.vAct_high)
795 var->sync |= FB_SYNC_VERT_HIGH_ACT;
796 var->vmode = 0;
797 has_default_mode = 1;
798 }
799
800 /*
801 * Now build modedb from EDID
802 */
803 if (rinfo->mon1_EDID) {
804 fb_edid_to_monspecs(rinfo->mon1_EDID, &info->monspecs);
805 fb_videomode_to_modelist(info->monspecs.modedb,
806 info->monspecs.modedb_len,
807 &info->modelist);
808 rinfo->mon1_modedb = info->monspecs.modedb;
809 rinfo->mon1_dbsize = info->monspecs.modedb_len;
810 }
811
812
813 /*
814 * Finally, if we don't have panel infos we need to figure some (or
815 * we try to read it from card), we try to pick a default mode
816 * and create some panel infos. Whatever...
817 */
818 if (rinfo->mon1_type != MT_CRT && !rinfo->panel_info.valid) {
819 struct fb_videomode *modedb;
820 int dbsize;
821 char modename[32];
822
823 RTRACE("Guessing panel info...\n");
824 if (rinfo->panel_info.xres == 0 || rinfo->panel_info.yres == 0) {
825 u32 tmp = INREG(FP_HORZ_STRETCH) & HORZ_PANEL_SIZE;
826 rinfo->panel_info.xres = ((tmp >> HORZ_PANEL_SHIFT) + 1) * 8;
827 tmp = INREG(FP_VERT_STRETCH) & VERT_PANEL_SIZE;
828 rinfo->panel_info.yres = (tmp >> VERT_PANEL_SHIFT) + 1;
829 }
830 if (rinfo->panel_info.xres == 0 || rinfo->panel_info.yres == 0) {
831 printk(KERN_WARNING "radeonfb: Can't find panel size, going back to CRT\n");
832 rinfo->mon1_type = MT_CRT;
833 goto pickup_default;
834 }
835 printk(KERN_WARNING "radeonfb: Assuming panel size %dx%d\n",
836 rinfo->panel_info.xres, rinfo->panel_info.yres);
837 modedb = rinfo->mon1_modedb;
838 dbsize = rinfo->mon1_dbsize;
839 snprintf(modename, 31, "%dx%d", rinfo->panel_info.xres, rinfo->panel_info.yres);
840 if (fb_find_mode(&info->var, info, modename,
841 modedb, dbsize, NULL, 8) == 0) {
842 printk(KERN_WARNING "radeonfb: Can't find mode for panel size, going back to CRT\n");
843 rinfo->mon1_type = MT_CRT;
844 goto pickup_default;
845 }
846 has_default_mode = 1;
847 radeon_var_to_panel_info(rinfo, &info->var);
848 }
849
850 pickup_default:
851 /*
852 * Apply passed-in mode option if any
853 */
854 if (mode_option) {
855 if (fb_find_mode(&info->var, info, mode_option,
856 info->monspecs.modedb,
857 info->monspecs.modedb_len, NULL, 8) != 0)
858 has_default_mode = 1;
859 }
860
861 /*
862 * Still no mode, let's pick up a default from the db
863 */
864 if (!has_default_mode && info->monspecs.modedb != NULL) {
865 struct fb_monspecs *specs = &info->monspecs;
866 struct fb_videomode *modedb = NULL;
867
868 /* get preferred timing */
869 if (specs->misc & FB_MISC_1ST_DETAIL) {
870 int i;
871
872 for (i = 0; i < specs->modedb_len; i++) {
873 if (specs->modedb[i].flag & FB_MODE_IS_FIRST) {
874 modedb = &specs->modedb[i];
875 break;
876 }
877 }
878 } else {
879 /* otherwise, get first mode in database */
880 modedb = &specs->modedb[0];
881 }
882 if (modedb != NULL) {
883 info->var.bits_per_pixel = 8;
884 radeon_videomode_to_var(&info->var, modedb);
885 has_default_mode = 1;
886 }
887 }
888 if (1) {
889 struct fb_videomode mode;
890 /* Make sure that whatever mode got selected is actually in the
891 * modelist or the kernel may die
892 */
893 fb_var_to_videomode(&mode, &info->var);
894 fb_add_videomode(&mode, &info->modelist);
895 }
896 }
897
898 /*
899 * The code below is used to pick up a mode in check_var and
900 * set_var. It should be made generic
901 */
902
903 /*
904 * This is used when looking for modes. We assign a "distance" value
905 * to a mode in the modedb depending how "close" it is from what we
906 * are looking for.
907 * Currently, we don't compare that much, we could do better but
908 * the current fbcon doesn't quite mind ;)
909 */
910 static int radeon_compare_modes(const struct fb_var_screeninfo *var,
911 const struct fb_videomode *mode)
912 {
913 int distance = 0;
914
915 distance = mode->yres - var->yres;
916 distance += (mode->xres - var->xres)/2;
917 return distance;
918 }
919
920 /*
921 * This function is called by check_var, it gets the passed in mode parameter, and
922 * outputs a valid mode matching the passed-in one as closely as possible.
923 * We need something better ultimately. Things like fbcon basically pass us out
924 * current mode with xres/yres hacked, while things like XFree will actually
925 * produce a full timing that we should respect as much as possible.
926 *
927 * This is why I added the FB_ACTIVATE_FIND that is used by fbcon. Without this,
928 * we do a simple spec match, that's all. With it, we actually look for a mode in
929 * either our monitor modedb or the vesa one if none
930 *
931 */
932 int radeon_match_mode(struct radeonfb_info *rinfo,
933 struct fb_var_screeninfo *dest,
934 const struct fb_var_screeninfo *src)
935 {
936 const struct fb_videomode *db = vesa_modes;
937 int i, dbsize = 34;
938 int has_rmx, native_db = 0;
939 int distance = INT_MAX;
940 const struct fb_videomode *candidate = NULL;
941
942 /* Start with a copy of the requested mode */
943 memcpy(dest, src, sizeof(struct fb_var_screeninfo));
944
945 /* Check if we have a modedb built from EDID */
946 if (rinfo->mon1_modedb) {
947 db = rinfo->mon1_modedb;
948 dbsize = rinfo->mon1_dbsize;
949 native_db = 1;
950 }
951
952 /* Check if we have a scaler allowing any fancy mode */
953 has_rmx = rinfo->mon1_type == MT_LCD || rinfo->mon1_type == MT_DFP;
954
955 /* If we have a scaler and are passed FB_ACTIVATE_TEST or
956 * FB_ACTIVATE_NOW, just do basic checking and return if the
957 * mode match
958 */
959 if ((src->activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_TEST ||
960 (src->activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_NOW) {
961 /* We don't have an RMX, validate timings. If we don't have
962 * monspecs, we should be paranoid and not let use go above
963 * 640x480-60, but I assume userland knows what it's doing here
964 * (though I may be proven wrong...)
965 */
966 if (has_rmx == 0 && rinfo->mon1_modedb)
967 if (fb_validate_mode((struct fb_var_screeninfo *)src, rinfo->info))
968 return -EINVAL;
969 return 0;
970 }
971
972 /* Now look for a mode in the database */
973 while (db) {
974 for (i = 0; i < dbsize; i++) {
975 int d;
976
977 if (db[i].yres < src->yres)
978 continue;
979 if (db[i].xres < src->xres)
980 continue;
981 d = radeon_compare_modes(src, &db[i]);
982 /* If the new mode is at least as good as the previous one,
983 * then it's our new candidate
984 */
985 if (d < distance) {
986 candidate = &db[i];
987 distance = d;
988 }
989 }
990 db = NULL;
991 /* If we have a scaler, we allow any mode from the database */
992 if (native_db && has_rmx) {
993 db = vesa_modes;
994 dbsize = 34;
995 native_db = 0;
996 }
997 }
998
999 /* If we have found a match, return it */
1000 if (candidate != NULL) {
1001 radeon_videomode_to_var(dest, candidate);
1002 return 0;
1003 }
1004
1005 /* If we haven't and don't have a scaler, fail */
1006 if (!has_rmx)
1007 return -EINVAL;
1008
1009 return 0;
1010 }
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