blob: beef770f920f4d9c41933b28fa5cd9759a71d9ed [file] [log] [blame]
Simon Glass97cb0922016-03-11 22:07:30 -07001/*
2 * From coreboot src/soc/intel/broadwell/igd.c
3 *
4 * Copyright (C) 2016 Google, Inc
5 *
6 * SPDX-License-Identifier: GPL-2.0
7 */
8
9#include <common.h>
10#include <bios_emul.h>
11#include <dm.h>
Simon Glass97cb0922016-03-11 22:07:30 -070012#include <vbe.h>
13#include <video.h>
Simon Glass97cb0922016-03-11 22:07:30 -070014#include <asm/cpu.h>
15#include <asm/intel_regs.h>
16#include <asm/io.h>
17#include <asm/mtrr.h>
18#include <asm/arch/cpu.h>
19#include <asm/arch/iomap.h>
20#include <asm/arch/pch.h>
Simon Glass97cb0922016-03-11 22:07:30 -070021#include "i915_reg.h"
22
23struct broadwell_igd_priv {
Simon Glass97cb0922016-03-11 22:07:30 -070024 u8 *regs;
25};
26
27struct broadwell_igd_plat {
28 u32 dp_hotplug[3];
29
30 int port_select;
31 int power_up_delay;
32 int power_backlight_on_delay;
33 int power_down_delay;
34 int power_backlight_off_delay;
35 int power_cycle_delay;
36 int cpu_backlight;
37 int pch_backlight;
38 int cdclk;
39 int pre_graphics_delay;
40};
41
42#define GT_RETRY 1000
43#define GT_CDCLK_337 0
44#define GT_CDCLK_450 1
45#define GT_CDCLK_540 2
46#define GT_CDCLK_675 3
47
48u32 board_map_oprom_vendev(u32 vendev)
49{
50 return SA_IGD_OPROM_VENDEV;
51}
52
53static int poll32(u8 *addr, uint mask, uint value)
54{
55 ulong start;
56
57 start = get_timer(0);
58 debug("%s: addr %p = %x\n", __func__, addr, readl(addr));
59 while ((readl(addr) & mask) != value) {
60 if (get_timer(start) > GT_RETRY) {
61 debug("poll32: timeout: %x\n", readl(addr));
62 return -ETIMEDOUT;
63 }
64 }
65
66 return 0;
67}
68
69static int haswell_early_init(struct udevice *dev)
70{
71 struct broadwell_igd_priv *priv = dev_get_priv(dev);
72 u8 *regs = priv->regs;
73 int ret;
74
75 /* Enable Force Wake */
76 writel(0x00000020, regs + 0xa180);
77 writel(0x00010001, regs + 0xa188);
78 ret = poll32(regs + 0x130044, 1, 1);
79 if (ret)
80 goto err;
81
82 /* Enable Counters */
83 setbits_le32(regs + 0xa248, 0x00000016);
84
85 /* GFXPAUSE settings */
86 writel(0x00070020, regs + 0xa000);
87
88 /* ECO Settings */
89 clrsetbits_le32(regs + 0xa180, ~0xff3fffff, 0x15000000);
90
91 /* Enable DOP Clock Gating */
92 writel(0x000003fd, regs + 0x9424);
93
94 /* Enable Unit Level Clock Gating */
95 writel(0x00000080, regs + 0x9400);
96 writel(0x40401000, regs + 0x9404);
97 writel(0x00000000, regs + 0x9408);
98 writel(0x02000001, regs + 0x940c);
99
100 /*
101 * RC6 Settings
102 */
103
104 /* Wake Rate Limits */
105 setbits_le32(regs + 0xa090, 0x00000000);
106 setbits_le32(regs + 0xa098, 0x03e80000);
107 setbits_le32(regs + 0xa09c, 0x00280000);
108 setbits_le32(regs + 0xa0a8, 0x0001e848);
109 setbits_le32(regs + 0xa0ac, 0x00000019);
110
111 /* Render/Video/Blitter Idle Max Count */
112 writel(0x0000000a, regs + 0x02054);
113 writel(0x0000000a, regs + 0x12054);
114 writel(0x0000000a, regs + 0x22054);
115 writel(0x0000000a, regs + 0x1a054);
116
117 /* RC Sleep / RCx Thresholds */
118 setbits_le32(regs + 0xa0b0, 0x00000000);
119 setbits_le32(regs + 0xa0b4, 0x000003e8);
120 setbits_le32(regs + 0xa0b8, 0x0000c350);
121
122 /* RP Settings */
123 setbits_le32(regs + 0xa010, 0x000f4240);
124 setbits_le32(regs + 0xa014, 0x12060000);
125 setbits_le32(regs + 0xa02c, 0x0000e808);
126 setbits_le32(regs + 0xa030, 0x0003bd08);
127 setbits_le32(regs + 0xa068, 0x000101d0);
128 setbits_le32(regs + 0xa06c, 0x00055730);
129 setbits_le32(regs + 0xa070, 0x0000000a);
130
131 /* RP Control */
132 writel(0x00000b92, regs + 0xa024);
133
134 /* HW RC6 Control */
135 writel(0x88040000, regs + 0xa090);
136
137 /* Video Frequency Request */
138 writel(0x08000000, regs + 0xa00c);
139
140 /* Set RC6 VIDs */
141 ret = poll32(regs + 0x138124, (1 << 31), 0);
142 if (ret)
143 goto err;
144 writel(0, regs + 0x138128);
145 writel(0x80000004, regs + 0x138124);
146 ret = poll32(regs + 0x138124, (1 << 31), 0);
147 if (ret)
148 goto err;
149
150 /* Enable PM Interrupts */
151 writel(0x03000076, regs + 0x4402c);
152
153 /* Enable RC6 in idle */
154 writel(0x00040000, regs + 0xa094);
155
156 return 0;
157err:
158 debug("%s: ret=%d\n", __func__, ret);
159 return ret;
160};
161
162static int haswell_late_init(struct udevice *dev)
163{
164 struct broadwell_igd_priv *priv = dev_get_priv(dev);
165 u8 *regs = priv->regs;
166 int ret;
167
168 /* Lock settings */
169 setbits_le32(regs + 0x0a248, (1 << 31));
170 setbits_le32(regs + 0x0a004, (1 << 4));
171 setbits_le32(regs + 0x0a080, (1 << 2));
172 setbits_le32(regs + 0x0a180, (1 << 31));
173
174 /* Disable Force Wake */
175 writel(0x00010000, regs + 0xa188);
176 ret = poll32(regs + 0x130044, 1, 0);
177 if (ret)
178 goto err;
179 writel(0x00000001, regs + 0xa188);
180
181 /* Enable power well for DP and Audio */
182 setbits_le32(regs + 0x45400, (1 << 31));
183 ret = poll32(regs + 0x45400, 1 << 30, 1 << 30);
184 if (ret)
185 goto err;
186
187 return 0;
188err:
189 debug("%s: ret=%d\n", __func__, ret);
190 return ret;
191};
192
193static int broadwell_early_init(struct udevice *dev)
194{
195 struct broadwell_igd_priv *priv = dev_get_priv(dev);
196 u8 *regs = priv->regs;
197 int ret;
198
199 /* Enable Force Wake */
200 writel(0x00010001, regs + 0xa188);
201 ret = poll32(regs + 0x130044, 1, 1);
202 if (ret)
203 goto err;
204
205 /* Enable push bus metric control and shift */
206 writel(0x00000004, regs + 0xa248);
207 writel(0x000000ff, regs + 0xa250);
208 writel(0x00000010, regs + 0xa25c);
209
210 /* GFXPAUSE settings (set based on stepping) */
211
212 /* ECO Settings */
213 writel(0x45200000, regs + 0xa180);
214
215 /* Enable DOP Clock Gating */
216 writel(0x000000fd, regs + 0x9424);
217
218 /* Enable Unit Level Clock Gating */
219 writel(0x00000000, regs + 0x9400);
220 writel(0x40401000, regs + 0x9404);
221 writel(0x00000000, regs + 0x9408);
222 writel(0x02000001, regs + 0x940c);
223 writel(0x0000000a, regs + 0x1a054);
224
225 /* Video Frequency Request */
226 writel(0x08000000, regs + 0xa00c);
227
228 writel(0x00000009, regs + 0x138158);
229 writel(0x0000000d, regs + 0x13815c);
230
231 /*
232 * RC6 Settings
233 */
234
235 /* Wake Rate Limits */
236 clrsetbits_le32(regs + 0x0a090, ~0, 0);
237 setbits_le32(regs + 0x0a098, 0x03e80000);
238 setbits_le32(regs + 0x0a09c, 0x00280000);
239 setbits_le32(regs + 0x0a0a8, 0x0001e848);
240 setbits_le32(regs + 0x0a0ac, 0x00000019);
241
242 /* Render/Video/Blitter Idle Max Count */
243 writel(0x0000000a, regs + 0x02054);
244 writel(0x0000000a, regs + 0x12054);
245 writel(0x0000000a, regs + 0x22054);
246
247 /* RC Sleep / RCx Thresholds */
248 setbits_le32(regs + 0x0a0b0, 0x00000000);
249 setbits_le32(regs + 0x0a0b8, 0x00000271);
250
251 /* RP Settings */
252 setbits_le32(regs + 0x0a010, 0x000f4240);
253 setbits_le32(regs + 0x0a014, 0x12060000);
254 setbits_le32(regs + 0x0a02c, 0x0000e808);
255 setbits_le32(regs + 0x0a030, 0x0003bd08);
256 setbits_le32(regs + 0x0a068, 0x000101d0);
257 setbits_le32(regs + 0x0a06c, 0x00055730);
258 setbits_le32(regs + 0x0a070, 0x0000000a);
259 setbits_le32(regs + 0x0a168, 0x00000006);
260
261 /* RP Control */
262 writel(0x00000b92, regs + 0xa024);
263
264 /* HW RC6 Control */
265 writel(0x90040000, regs + 0xa090);
266
267 /* Set RC6 VIDs */
268 ret = poll32(regs + 0x138124, (1 << 31), 0);
269 if (ret)
270 goto err;
271 writel(0, regs + 0x138128);
272 writel(0x80000004, regs + 0x138124);
273 ret = poll32(regs + 0x138124, (1 << 31), 0);
274 if (ret)
275 goto err;
276
277 /* Enable PM Interrupts */
278 writel(0x03000076, regs + 0x4402c);
279
280 /* Enable RC6 in idle */
281 writel(0x00040000, regs + 0xa094);
282
283 return 0;
284err:
285 debug("%s: ret=%d\n", __func__, ret);
286 return ret;
287}
288
289static int broadwell_late_init(struct udevice *dev)
290{
291 struct broadwell_igd_priv *priv = dev_get_priv(dev);
292 u8 *regs = priv->regs;
293 int ret;
294
295 /* Lock settings */
296 setbits_le32(regs + 0x0a248, 1 << 31);
297 setbits_le32(regs + 0x0a000, 1 << 18);
298 setbits_le32(regs + 0x0a180, 1 << 31);
299
300 /* Disable Force Wake */
301 writel(0x00010000, regs + 0xa188);
302 ret = poll32(regs + 0x130044, 1, 0);
303 if (ret)
304 goto err;
305
306 /* Enable power well for DP and Audio */
307 setbits_le32(regs + 0x45400, 1 << 31);
308 ret = poll32(regs + 0x45400, 1 << 30, 1 << 30);
309 if (ret)
310 goto err;
311
312 return 0;
313err:
314 debug("%s: ret=%d\n", __func__, ret);
315 return ret;
316};
317
318
319static unsigned long gtt_read(struct broadwell_igd_priv *priv,
320 unsigned long reg)
321{
Masahiro Yamada720873b2016-09-06 22:17:33 +0900322 return readl(priv->regs + reg);
Simon Glass97cb0922016-03-11 22:07:30 -0700323}
324
325static void gtt_write(struct broadwell_igd_priv *priv, unsigned long reg,
326 unsigned long data)
327{
328 writel(data, priv->regs + reg);
329}
330
331static inline void gtt_clrsetbits(struct broadwell_igd_priv *priv, u32 reg,
332 u32 bic, u32 or)
333{
334 clrsetbits_le32(priv->regs + reg, bic, or);
335}
336
337static int gtt_poll(struct broadwell_igd_priv *priv, u32 reg, u32 mask,
338 u32 value)
339{
340 unsigned try = GT_RETRY;
341 u32 data;
342
343 while (try--) {
344 data = gtt_read(priv, reg);
345 if ((data & mask) == value)
346 return 0;
347 udelay(10);
348 }
349
350 debug("GT init timeout\n");
351 return -ETIMEDOUT;
352}
353
354static void igd_setup_panel(struct udevice *dev)
355{
356 struct broadwell_igd_plat *plat = dev_get_platdata(dev);
357 struct broadwell_igd_priv *priv = dev_get_priv(dev);
358 u32 reg32;
359
360 /* Setup Digital Port Hotplug */
361 reg32 = (plat->dp_hotplug[0] & 0x7) << 2;
362 reg32 |= (plat->dp_hotplug[1] & 0x7) << 10;
363 reg32 |= (plat->dp_hotplug[2] & 0x7) << 18;
364 gtt_write(priv, PCH_PORT_HOTPLUG, reg32);
365
366 /* Setup Panel Power On Delays */
367 reg32 = (plat->port_select & 0x3) << 30;
368 reg32 |= (plat->power_up_delay & 0x1fff) << 16;
369 reg32 |= (plat->power_backlight_on_delay & 0x1fff);
370 gtt_write(priv, PCH_PP_ON_DELAYS, reg32);
371
372 /* Setup Panel Power Off Delays */
373 reg32 = (plat->power_down_delay & 0x1fff) << 16;
374 reg32 |= (plat->power_backlight_off_delay & 0x1fff);
375 gtt_write(priv, PCH_PP_OFF_DELAYS, reg32);
376
377 /* Setup Panel Power Cycle Delay */
378 if (plat->power_cycle_delay) {
379 reg32 = gtt_read(priv, PCH_PP_DIVISOR);
380 reg32 &= ~0xff;
381 reg32 |= plat->power_cycle_delay & 0xff;
382 gtt_write(priv, PCH_PP_DIVISOR, reg32);
383 }
384
385 /* Enable Backlight if needed */
386 if (plat->cpu_backlight) {
387 gtt_write(priv, BLC_PWM_CPU_CTL2, BLC_PWM2_ENABLE);
388 gtt_write(priv, BLC_PWM_CPU_CTL, plat->cpu_backlight);
389 }
390 if (plat->pch_backlight) {
391 gtt_write(priv, BLC_PWM_PCH_CTL1, BLM_PCH_PWM_ENABLE);
392 gtt_write(priv, BLC_PWM_PCH_CTL2, plat->pch_backlight);
393 }
394}
395
396static int igd_cdclk_init_haswell(struct udevice *dev)
397{
398 struct broadwell_igd_plat *plat = dev_get_platdata(dev);
399 struct broadwell_igd_priv *priv = dev_get_priv(dev);
400 int cdclk = plat->cdclk;
401 u16 devid;
402 int gpu_is_ulx = 0;
403 u32 dpdiv, lpcll;
404 int ret;
405
406 dm_pci_read_config16(dev, PCI_DEVICE_ID, &devid);
407
408 /* Check for ULX GT1 or GT2 */
409 if (devid == 0x0a0e || devid == 0x0a1e)
410 gpu_is_ulx = 1;
411
412 /* 675MHz is not supported on haswell */
413 if (cdclk == GT_CDCLK_675)
414 cdclk = GT_CDCLK_337;
415
416 /* If CD clock is fixed or ULT then set to 450MHz */
417 if ((gtt_read(priv, 0x42014) & 0x1000000) || cpu_is_ult())
418 cdclk = GT_CDCLK_450;
419
420 /* 540MHz is not supported on ULX */
421 if (gpu_is_ulx && cdclk == GT_CDCLK_540)
422 cdclk = GT_CDCLK_337;
423
424 /* 337.5MHz is not supported on non-ULT/ULX */
425 if (!gpu_is_ulx && !cpu_is_ult() && cdclk == GT_CDCLK_337)
426 cdclk = GT_CDCLK_450;
427
428 /* Set variables based on CD Clock setting */
429 switch (cdclk) {
430 case GT_CDCLK_337:
431 dpdiv = 169;
432 lpcll = (1 << 26);
433 break;
434 case GT_CDCLK_450:
435 dpdiv = 225;
436 lpcll = 0;
437 break;
438 case GT_CDCLK_540:
439 dpdiv = 270;
440 lpcll = (1 << 26);
441 break;
442 default:
443 ret = -EDOM;
444 goto err;
445 }
446
447 /* Set LPCLL_CTL CD Clock Frequency Select */
448 gtt_clrsetbits(priv, 0x130040, ~0xf3ffffff, lpcll);
449
450 /* ULX: Inform power controller of selected frequency */
451 if (gpu_is_ulx) {
452 if (cdclk == GT_CDCLK_450)
453 gtt_write(priv, 0x138128, 0x00000000); /* 450MHz */
454 else
455 gtt_write(priv, 0x138128, 0x00000001); /* 337.5MHz */
456 gtt_write(priv, 0x13812c, 0x00000000);
457 gtt_write(priv, 0x138124, 0x80000017);
458 }
459
460 /* Set CPU DP AUX 2X bit clock dividers */
461 gtt_clrsetbits(priv, 0x64010, ~0xfffff800, dpdiv);
462 gtt_clrsetbits(priv, 0x64810, ~0xfffff800, dpdiv);
463
464 return 0;
465err:
466 debug("%s: ret=%d\n", __func__, ret);
467 return ret;
468}
469
470static int igd_cdclk_init_broadwell(struct udevice *dev)
471{
472 struct broadwell_igd_plat *plat = dev_get_platdata(dev);
473 struct broadwell_igd_priv *priv = dev_get_priv(dev);
474 int cdclk = plat->cdclk;
475 u32 dpdiv, lpcll, pwctl, cdset;
476 int ret;
477
478 /* Inform power controller of upcoming frequency change */
479 gtt_write(priv, 0x138128, 0);
480 gtt_write(priv, 0x13812c, 0);
481 gtt_write(priv, 0x138124, 0x80000018);
482
483 /* Poll GT driver mailbox for run/busy clear */
484 if (gtt_poll(priv, 0x138124, 1 << 31, 0 << 31))
485 cdclk = GT_CDCLK_450;
486
487 if (gtt_read(priv, 0x42014) & 0x1000000) {
488 /* If CD clock is fixed then set to 450MHz */
489 cdclk = GT_CDCLK_450;
490 } else {
491 /* Program CD clock to highest supported freq */
492 if (cpu_is_ult())
493 cdclk = GT_CDCLK_540;
494 else
495 cdclk = GT_CDCLK_675;
496 }
497
498 /* CD clock frequency 675MHz not supported on ULT */
499 if (cpu_is_ult() && cdclk == GT_CDCLK_675)
500 cdclk = GT_CDCLK_540;
501
502 /* Set variables based on CD Clock setting */
503 switch (cdclk) {
504 case GT_CDCLK_337:
505 cdset = 337;
506 lpcll = (1 << 27);
507 pwctl = 2;
508 dpdiv = 169;
509 break;
510 case GT_CDCLK_450:
511 cdset = 449;
512 lpcll = 0;
513 pwctl = 0;
514 dpdiv = 225;
515 break;
516 case GT_CDCLK_540:
517 cdset = 539;
518 lpcll = (1 << 26);
519 pwctl = 1;
520 dpdiv = 270;
521 break;
522 case GT_CDCLK_675:
523 cdset = 674;
524 lpcll = (1 << 26) | (1 << 27);
525 pwctl = 3;
526 dpdiv = 338;
527 break;
528 default:
529 ret = -EDOM;
530 goto err;
531 }
532 debug("%s: frequency = %d\n", __func__, cdclk);
533
534 /* Set LPCLL_CTL CD Clock Frequency Select */
535 gtt_clrsetbits(priv, 0x130040, ~0xf3ffffff, lpcll);
536
537 /* Inform power controller of selected frequency */
538 gtt_write(priv, 0x138128, pwctl);
539 gtt_write(priv, 0x13812c, 0);
540 gtt_write(priv, 0x138124, 0x80000017);
541
542 /* Program CD Clock Frequency */
543 gtt_clrsetbits(priv, 0x46200, ~0xfffffc00, cdset);
544
545 /* Set CPU DP AUX 2X bit clock dividers */
546 gtt_clrsetbits(priv, 0x64010, ~0xfffff800, dpdiv);
547 gtt_clrsetbits(priv, 0x64810, ~0xfffff800, dpdiv);
548
549 return 0;
550err:
551 debug("%s: ret=%d\n", __func__, ret);
552 return ret;
553}
554
555u8 systemagent_revision(struct udevice *bus)
556{
557 ulong val;
558
559 pci_bus_read_config(bus, PCI_BDF(0, 0, 0), PCI_REVISION_ID, &val,
560 PCI_SIZE_32);
561
562 return val;
563}
564
565static int igd_pre_init(struct udevice *dev, bool is_broadwell)
566{
567 struct broadwell_igd_plat *plat = dev_get_platdata(dev);
568 struct broadwell_igd_priv *priv = dev_get_priv(dev);
569 u32 rp1_gfx_freq;
570 int ret;
571
572 mdelay(plat->pre_graphics_delay);
573
574 /* Early init steps */
575 if (is_broadwell) {
576 ret = broadwell_early_init(dev);
577 if (ret)
578 goto err;
579
580 /* Set GFXPAUSE based on stepping */
581 if (cpu_get_stepping() <= (CPUID_BROADWELL_E0 & 0xf) &&
582 systemagent_revision(pci_get_controller(dev)) <= 9) {
583 gtt_write(priv, 0xa000, 0x300ff);
584 } else {
585 gtt_write(priv, 0xa000, 0x30020);
586 }
587 } else {
588 ret = haswell_early_init(dev);
589 if (ret)
590 goto err;
591 }
592
593 /* Set RP1 graphics frequency */
594 rp1_gfx_freq = (readl(MCHBAR_REG(0x5998)) >> 8) & 0xff;
595 gtt_write(priv, 0xa008, rp1_gfx_freq << 24);
596
597 /* Post VBIOS panel setup */
598 igd_setup_panel(dev);
599
600 return 0;
601err:
602 debug("%s: ret=%d\n", __func__, ret);
603 return ret;
604}
605
606static int igd_post_init(struct udevice *dev, bool is_broadwell)
607{
608 int ret;
609
610 /* Late init steps */
611 if (is_broadwell) {
612 ret = igd_cdclk_init_broadwell(dev);
613 if (ret)
614 return ret;
615 ret = broadwell_late_init(dev);
616 if (ret)
617 return ret;
618 } else {
619 igd_cdclk_init_haswell(dev);
620 ret = haswell_late_init(dev);
621 if (ret)
622 return ret;
623 }
624
625 return 0;
626}
627
628static int broadwell_igd_int15_handler(void)
629{
630 int res = 0;
631
632 debug("%s: INT15 function %04x!\n", __func__, M.x86.R_AX);
633
634 switch (M.x86.R_AX) {
635 case 0x5f35:
636 /*
637 * Boot Display Device Hook:
638 * bit 0 = CRT
639 * bit 1 = TV (eDP)
640 * bit 2 = EFP
641 * bit 3 = LFP
642 * bit 4 = CRT2
643 * bit 5 = TV2 (eDP)
644 * bit 6 = EFP2
645 * bit 7 = LFP2
646 */
647 M.x86.R_AX = 0x005f;
648 M.x86.R_CX = 0x0000; /* Use video bios default */
649 res = 1;
650 break;
651 default:
652 debug("Unknown INT15 function %04x!\n", M.x86.R_AX);
653 break;
654 }
655
656 return res;
657}
658
659static int broadwell_igd_probe(struct udevice *dev)
660{
661 struct video_uc_platdata *plat = dev_get_uclass_platdata(dev);
662 struct video_priv *uc_priv = dev_get_uclass_priv(dev);
Simon Glass97cb0922016-03-11 22:07:30 -0700663 bool is_broadwell;
Simon Glass97cb0922016-03-11 22:07:30 -0700664 int ret;
665
666 if (!ll_boot_init()) {
667 /*
668 * If we are running from EFI or coreboot, this driver can't
669 * work.
670 */
671 printf("Not available (previous bootloader prevents it)\n");
672 return -EPERM;
673 }
674 is_broadwell = cpu_get_family_model() == BROADWELL_FAMILY_ULT;
675 bootstage_start(BOOTSTAGE_ID_ACCUM_LCD, "vesa display");
676 debug("%s: is_broadwell=%d\n", __func__, is_broadwell);
677 ret = igd_pre_init(dev, is_broadwell);
678 if (!ret) {
Simon Glass443ffe52016-10-05 20:42:19 -0600679 ret = vbe_setup_video(dev, broadwell_igd_int15_handler);
680 if (ret)
681 debug("failed to run video BIOS: %d\n", ret);
Simon Glass97cb0922016-03-11 22:07:30 -0700682 }
683 if (!ret)
684 ret = igd_post_init(dev, is_broadwell);
685 bootstage_accum(BOOTSTAGE_ID_ACCUM_LCD);
686 if (ret)
687 return ret;
688
Simon Glass443ffe52016-10-05 20:42:19 -0600689 /* Use write-combining for the graphics memory, 256MB */
690 ret = mtrr_add_request(MTRR_TYPE_WRCOMB, plat->base, 256 << 20);
Simon Glass97cb0922016-03-11 22:07:30 -0700691 if (!ret)
692 ret = mtrr_commit(true);
693 if (ret && ret != -ENOSYS) {
694 printf("Failed to add MTRR: Display will be slow (err %d)\n",
695 ret);
696 }
697
Simon Glass443ffe52016-10-05 20:42:19 -0600698 debug("fb=%lx, size %x, display size=%d %d %d\n", plat->base,
699 plat->size, uc_priv->xsize, uc_priv->ysize, uc_priv->bpix);
Simon Glass97cb0922016-03-11 22:07:30 -0700700
701 return 0;
702}
703
704static int broadwell_igd_ofdata_to_platdata(struct udevice *dev)
705{
706 struct broadwell_igd_plat *plat = dev_get_platdata(dev);
707 struct broadwell_igd_priv *priv = dev_get_priv(dev);
708 int node = dev->of_offset;
709 const void *blob = gd->fdt_blob;
710
711 if (fdtdec_get_int_array(blob, node, "intel,dp-hotplug",
712 plat->dp_hotplug,
713 ARRAY_SIZE(plat->dp_hotplug)))
714 return -EINVAL;
715 plat->port_select = fdtdec_get_int(blob, node, "intel,port-select", 0);
716 plat->power_cycle_delay = fdtdec_get_int(blob, node,
717 "intel,power-cycle-delay", 0);
718 plat->power_up_delay = fdtdec_get_int(blob, node,
719 "intel,power-up-delay", 0);
720 plat->power_down_delay = fdtdec_get_int(blob, node,
721 "intel,power-down-delay", 0);
722 plat->power_backlight_on_delay = fdtdec_get_int(blob, node,
723 "intel,power-backlight-on-delay", 0);
724 plat->power_backlight_off_delay = fdtdec_get_int(blob, node,
725 "intel,power-backlight-off-delay", 0);
726 plat->cpu_backlight = fdtdec_get_int(blob, node,
727 "intel,cpu-backlight", 0);
728 plat->pch_backlight = fdtdec_get_int(blob, node,
729 "intel,pch-backlight", 0);
730 plat->pre_graphics_delay = fdtdec_get_int(blob, node,
731 "intel,pre-graphics-delay", 0);
732 priv->regs = (u8 *)dm_pci_read_bar32(dev, 0);
733 debug("%s: regs at %p\n", __func__, priv->regs);
734 debug("dp_hotplug %d %d %d\n", plat->dp_hotplug[0], plat->dp_hotplug[1],
735 plat->dp_hotplug[2]);
736 debug("port_select = %d\n", plat->port_select);
737 debug("power_up_delay = %d\n", plat->power_up_delay);
738 debug("power_backlight_on_delay = %d\n",
739 plat->power_backlight_on_delay);
740 debug("power_down_delay = %d\n", plat->power_down_delay);
741 debug("power_backlight_off_delay = %d\n",
742 plat->power_backlight_off_delay);
743 debug("power_cycle_delay = %d\n", plat->power_cycle_delay);
744 debug("cpu_backlight = %x\n", plat->cpu_backlight);
745 debug("pch_backlight = %x\n", plat->pch_backlight);
746 debug("cdclk = %d\n", plat->cdclk);
747 debug("pre_graphics_delay = %d\n", plat->pre_graphics_delay);
748
749 return 0;
750}
751
752static const struct video_ops broadwell_igd_ops = {
753};
754
755static const struct udevice_id broadwell_igd_ids[] = {
756 { .compatible = "intel,broadwell-igd" },
757 { }
758};
759
760U_BOOT_DRIVER(broadwell_igd) = {
761 .name = "broadwell_igd",
762 .id = UCLASS_VIDEO,
763 .of_match = broadwell_igd_ids,
764 .ops = &broadwell_igd_ops,
765 .ofdata_to_platdata = broadwell_igd_ofdata_to_platdata,
766 .probe = broadwell_igd_probe,
767 .priv_auto_alloc_size = sizeof(struct broadwell_igd_priv),
768 .platdata_auto_alloc_size = sizeof(struct broadwell_igd_plat),
769};