2 * Copyright © 2006-2007 Intel Corporation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
24 * Eric Anholt <eric@anholt.net>
27 #include <linux/dmi.h>
28 #include <linux/module.h>
29 #include <linux/input.h>
30 #include <linux/i2c.h>
31 #include <linux/kernel.h>
32 #include <linux/slab.h>
33 #include <linux/vgaarb.h>
34 #include <drm/drm_edid.h>
36 #include "intel_drv.h"
39 #include "i915_trace.h"
40 #include "drm_dp_helper.h"
41 #include "drm_crtc_helper.h"
42 #include <linux/dma_remapping.h>
44 #define HAS_eDP (intel_pipe_has_type(crtc, INTEL_OUTPUT_EDP))
46 bool intel_pipe_has_type(struct drm_crtc *crtc, int type);
47 static void intel_increase_pllclock(struct drm_crtc *crtc);
48 static void intel_crtc_update_cursor(struct drm_crtc *crtc, bool on);
71 #define INTEL_P2_NUM 2
72 typedef struct intel_limit intel_limit_t;
74 intel_range_t dot, vco, n, m, m1, m2, p, p1;
76 bool (* find_pll)(const intel_limit_t *, struct drm_crtc *,
77 int, int, intel_clock_t *, intel_clock_t *);
81 #define IRONLAKE_FDI_FREQ 2700000 /* in kHz for mode->clock */
84 intel_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
85 int target, int refclk, intel_clock_t *match_clock,
86 intel_clock_t *best_clock);
88 intel_g4x_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
89 int target, int refclk, intel_clock_t *match_clock,
90 intel_clock_t *best_clock);
93 intel_find_pll_g4x_dp(const intel_limit_t *, struct drm_crtc *crtc,
94 int target, int refclk, intel_clock_t *match_clock,
95 intel_clock_t *best_clock);
97 intel_find_pll_ironlake_dp(const intel_limit_t *, struct drm_crtc *crtc,
98 int target, int refclk, intel_clock_t *match_clock,
99 intel_clock_t *best_clock);
101 static inline u32 /* units of 100MHz */
102 intel_fdi_link_freq(struct drm_device *dev)
105 struct drm_i915_private *dev_priv = dev->dev_private;
106 return (I915_READ(FDI_PLL_BIOS_0) & FDI_PLL_FB_CLOCK_MASK) + 2;
111 static const intel_limit_t intel_limits_i8xx_dvo = {
112 .dot = { .min = 25000, .max = 350000 },
113 .vco = { .min = 930000, .max = 1400000 },
114 .n = { .min = 3, .max = 16 },
115 .m = { .min = 96, .max = 140 },
116 .m1 = { .min = 18, .max = 26 },
117 .m2 = { .min = 6, .max = 16 },
118 .p = { .min = 4, .max = 128 },
119 .p1 = { .min = 2, .max = 33 },
120 .p2 = { .dot_limit = 165000,
121 .p2_slow = 4, .p2_fast = 2 },
122 .find_pll = intel_find_best_PLL,
125 static const intel_limit_t intel_limits_i8xx_lvds = {
126 .dot = { .min = 25000, .max = 350000 },
127 .vco = { .min = 930000, .max = 1400000 },
128 .n = { .min = 3, .max = 16 },
129 .m = { .min = 96, .max = 140 },
130 .m1 = { .min = 18, .max = 26 },
131 .m2 = { .min = 6, .max = 16 },
132 .p = { .min = 4, .max = 128 },
133 .p1 = { .min = 1, .max = 6 },
134 .p2 = { .dot_limit = 165000,
135 .p2_slow = 14, .p2_fast = 7 },
136 .find_pll = intel_find_best_PLL,
139 static const intel_limit_t intel_limits_i9xx_sdvo = {
140 .dot = { .min = 20000, .max = 400000 },
141 .vco = { .min = 1400000, .max = 2800000 },
142 .n = { .min = 1, .max = 6 },
143 .m = { .min = 70, .max = 120 },
144 .m1 = { .min = 10, .max = 22 },
145 .m2 = { .min = 5, .max = 9 },
146 .p = { .min = 5, .max = 80 },
147 .p1 = { .min = 1, .max = 8 },
148 .p2 = { .dot_limit = 200000,
149 .p2_slow = 10, .p2_fast = 5 },
150 .find_pll = intel_find_best_PLL,
153 static const intel_limit_t intel_limits_i9xx_lvds = {
154 .dot = { .min = 20000, .max = 400000 },
155 .vco = { .min = 1400000, .max = 2800000 },
156 .n = { .min = 1, .max = 6 },
157 .m = { .min = 70, .max = 120 },
158 .m1 = { .min = 10, .max = 22 },
159 .m2 = { .min = 5, .max = 9 },
160 .p = { .min = 7, .max = 98 },
161 .p1 = { .min = 1, .max = 8 },
162 .p2 = { .dot_limit = 112000,
163 .p2_slow = 14, .p2_fast = 7 },
164 .find_pll = intel_find_best_PLL,
168 static const intel_limit_t intel_limits_g4x_sdvo = {
169 .dot = { .min = 25000, .max = 270000 },
170 .vco = { .min = 1750000, .max = 3500000},
171 .n = { .min = 1, .max = 4 },
172 .m = { .min = 104, .max = 138 },
173 .m1 = { .min = 17, .max = 23 },
174 .m2 = { .min = 5, .max = 11 },
175 .p = { .min = 10, .max = 30 },
176 .p1 = { .min = 1, .max = 3},
177 .p2 = { .dot_limit = 270000,
181 .find_pll = intel_g4x_find_best_PLL,
184 static const intel_limit_t intel_limits_g4x_hdmi = {
185 .dot = { .min = 22000, .max = 400000 },
186 .vco = { .min = 1750000, .max = 3500000},
187 .n = { .min = 1, .max = 4 },
188 .m = { .min = 104, .max = 138 },
189 .m1 = { .min = 16, .max = 23 },
190 .m2 = { .min = 5, .max = 11 },
191 .p = { .min = 5, .max = 80 },
192 .p1 = { .min = 1, .max = 8},
193 .p2 = { .dot_limit = 165000,
194 .p2_slow = 10, .p2_fast = 5 },
195 .find_pll = intel_g4x_find_best_PLL,
198 static const intel_limit_t intel_limits_g4x_single_channel_lvds = {
199 .dot = { .min = 20000, .max = 115000 },
200 .vco = { .min = 1750000, .max = 3500000 },
201 .n = { .min = 1, .max = 3 },
202 .m = { .min = 104, .max = 138 },
203 .m1 = { .min = 17, .max = 23 },
204 .m2 = { .min = 5, .max = 11 },
205 .p = { .min = 28, .max = 112 },
206 .p1 = { .min = 2, .max = 8 },
207 .p2 = { .dot_limit = 0,
208 .p2_slow = 14, .p2_fast = 14
210 .find_pll = intel_g4x_find_best_PLL,
213 static const intel_limit_t intel_limits_g4x_dual_channel_lvds = {
214 .dot = { .min = 80000, .max = 224000 },
215 .vco = { .min = 1750000, .max = 3500000 },
216 .n = { .min = 1, .max = 3 },
217 .m = { .min = 104, .max = 138 },
218 .m1 = { .min = 17, .max = 23 },
219 .m2 = { .min = 5, .max = 11 },
220 .p = { .min = 14, .max = 42 },
221 .p1 = { .min = 2, .max = 6 },
222 .p2 = { .dot_limit = 0,
223 .p2_slow = 7, .p2_fast = 7
225 .find_pll = intel_g4x_find_best_PLL,
228 static const intel_limit_t intel_limits_g4x_display_port = {
229 .dot = { .min = 161670, .max = 227000 },
230 .vco = { .min = 1750000, .max = 3500000},
231 .n = { .min = 1, .max = 2 },
232 .m = { .min = 97, .max = 108 },
233 .m1 = { .min = 0x10, .max = 0x12 },
234 .m2 = { .min = 0x05, .max = 0x06 },
235 .p = { .min = 10, .max = 20 },
236 .p1 = { .min = 1, .max = 2},
237 .p2 = { .dot_limit = 0,
238 .p2_slow = 10, .p2_fast = 10 },
239 .find_pll = intel_find_pll_g4x_dp,
242 static const intel_limit_t intel_limits_pineview_sdvo = {
243 .dot = { .min = 20000, .max = 400000},
244 .vco = { .min = 1700000, .max = 3500000 },
245 /* Pineview's Ncounter is a ring counter */
246 .n = { .min = 3, .max = 6 },
247 .m = { .min = 2, .max = 256 },
248 /* Pineview only has one combined m divider, which we treat as m2. */
249 .m1 = { .min = 0, .max = 0 },
250 .m2 = { .min = 0, .max = 254 },
251 .p = { .min = 5, .max = 80 },
252 .p1 = { .min = 1, .max = 8 },
253 .p2 = { .dot_limit = 200000,
254 .p2_slow = 10, .p2_fast = 5 },
255 .find_pll = intel_find_best_PLL,
258 static const intel_limit_t intel_limits_pineview_lvds = {
259 .dot = { .min = 20000, .max = 400000 },
260 .vco = { .min = 1700000, .max = 3500000 },
261 .n = { .min = 3, .max = 6 },
262 .m = { .min = 2, .max = 256 },
263 .m1 = { .min = 0, .max = 0 },
264 .m2 = { .min = 0, .max = 254 },
265 .p = { .min = 7, .max = 112 },
266 .p1 = { .min = 1, .max = 8 },
267 .p2 = { .dot_limit = 112000,
268 .p2_slow = 14, .p2_fast = 14 },
269 .find_pll = intel_find_best_PLL,
272 /* Ironlake / Sandybridge
274 * We calculate clock using (register_value + 2) for N/M1/M2, so here
275 * the range value for them is (actual_value - 2).
277 static const intel_limit_t intel_limits_ironlake_dac = {
278 .dot = { .min = 25000, .max = 350000 },
279 .vco = { .min = 1760000, .max = 3510000 },
280 .n = { .min = 1, .max = 5 },
281 .m = { .min = 79, .max = 127 },
282 .m1 = { .min = 12, .max = 22 },
283 .m2 = { .min = 5, .max = 9 },
284 .p = { .min = 5, .max = 80 },
285 .p1 = { .min = 1, .max = 8 },
286 .p2 = { .dot_limit = 225000,
287 .p2_slow = 10, .p2_fast = 5 },
288 .find_pll = intel_g4x_find_best_PLL,
291 static const intel_limit_t intel_limits_ironlake_single_lvds = {
292 .dot = { .min = 25000, .max = 350000 },
293 .vco = { .min = 1760000, .max = 3510000 },
294 .n = { .min = 1, .max = 3 },
295 .m = { .min = 79, .max = 118 },
296 .m1 = { .min = 12, .max = 22 },
297 .m2 = { .min = 5, .max = 9 },
298 .p = { .min = 28, .max = 112 },
299 .p1 = { .min = 2, .max = 8 },
300 .p2 = { .dot_limit = 225000,
301 .p2_slow = 14, .p2_fast = 14 },
302 .find_pll = intel_g4x_find_best_PLL,
305 static const intel_limit_t intel_limits_ironlake_dual_lvds = {
306 .dot = { .min = 25000, .max = 350000 },
307 .vco = { .min = 1760000, .max = 3510000 },
308 .n = { .min = 1, .max = 3 },
309 .m = { .min = 79, .max = 127 },
310 .m1 = { .min = 12, .max = 22 },
311 .m2 = { .min = 5, .max = 9 },
312 .p = { .min = 14, .max = 56 },
313 .p1 = { .min = 2, .max = 8 },
314 .p2 = { .dot_limit = 225000,
315 .p2_slow = 7, .p2_fast = 7 },
316 .find_pll = intel_g4x_find_best_PLL,
319 /* LVDS 100mhz refclk limits. */
320 static const intel_limit_t intel_limits_ironlake_single_lvds_100m = {
321 .dot = { .min = 25000, .max = 350000 },
322 .vco = { .min = 1760000, .max = 3510000 },
323 .n = { .min = 1, .max = 2 },
324 .m = { .min = 79, .max = 126 },
325 .m1 = { .min = 12, .max = 22 },
326 .m2 = { .min = 5, .max = 9 },
327 .p = { .min = 28, .max = 112 },
328 .p1 = { .min = 2, .max = 8 },
329 .p2 = { .dot_limit = 225000,
330 .p2_slow = 14, .p2_fast = 14 },
331 .find_pll = intel_g4x_find_best_PLL,
334 static const intel_limit_t intel_limits_ironlake_dual_lvds_100m = {
335 .dot = { .min = 25000, .max = 350000 },
336 .vco = { .min = 1760000, .max = 3510000 },
337 .n = { .min = 1, .max = 3 },
338 .m = { .min = 79, .max = 126 },
339 .m1 = { .min = 12, .max = 22 },
340 .m2 = { .min = 5, .max = 9 },
341 .p = { .min = 14, .max = 42 },
342 .p1 = { .min = 2, .max = 6 },
343 .p2 = { .dot_limit = 225000,
344 .p2_slow = 7, .p2_fast = 7 },
345 .find_pll = intel_g4x_find_best_PLL,
348 static const intel_limit_t intel_limits_ironlake_display_port = {
349 .dot = { .min = 25000, .max = 350000 },
350 .vco = { .min = 1760000, .max = 3510000},
351 .n = { .min = 1, .max = 2 },
352 .m = { .min = 81, .max = 90 },
353 .m1 = { .min = 12, .max = 22 },
354 .m2 = { .min = 5, .max = 9 },
355 .p = { .min = 10, .max = 20 },
356 .p1 = { .min = 1, .max = 2},
357 .p2 = { .dot_limit = 0,
358 .p2_slow = 10, .p2_fast = 10 },
359 .find_pll = intel_find_pll_ironlake_dp,
362 u32 intel_dpio_read(struct drm_i915_private *dev_priv, int reg)
367 spin_lock_irqsave(&dev_priv->dpio_lock, flags);
368 if (wait_for_atomic_us((I915_READ(DPIO_PKT) & DPIO_BUSY) == 0, 100)) {
369 DRM_ERROR("DPIO idle wait timed out\n");
373 I915_WRITE(DPIO_REG, reg);
374 I915_WRITE(DPIO_PKT, DPIO_RID | DPIO_OP_READ | DPIO_PORTID |
376 if (wait_for_atomic_us((I915_READ(DPIO_PKT) & DPIO_BUSY) == 0, 100)) {
377 DRM_ERROR("DPIO read wait timed out\n");
380 val = I915_READ(DPIO_DATA);
383 spin_unlock_irqrestore(&dev_priv->dpio_lock, flags);
387 static void vlv_init_dpio(struct drm_device *dev)
389 struct drm_i915_private *dev_priv = dev->dev_private;
391 /* Reset the DPIO config */
392 I915_WRITE(DPIO_CTL, 0);
393 POSTING_READ(DPIO_CTL);
394 I915_WRITE(DPIO_CTL, 1);
395 POSTING_READ(DPIO_CTL);
398 static int intel_dual_link_lvds_callback(const struct dmi_system_id *id)
400 DRM_INFO("Forcing lvds to dual link mode on %s\n", id->ident);
404 static const struct dmi_system_id intel_dual_link_lvds[] = {
406 .callback = intel_dual_link_lvds_callback,
407 .ident = "Apple MacBook Pro (Core i5/i7 Series)",
409 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
410 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro8,2"),
413 { } /* terminating entry */
416 static bool is_dual_link_lvds(struct drm_i915_private *dev_priv,
421 /* use the module option value if specified */
422 if (i915_lvds_channel_mode > 0)
423 return i915_lvds_channel_mode == 2;
425 if (dmi_check_system(intel_dual_link_lvds))
428 if (dev_priv->lvds_val)
429 val = dev_priv->lvds_val;
431 /* BIOS should set the proper LVDS register value at boot, but
432 * in reality, it doesn't set the value when the lid is closed;
433 * we need to check "the value to be set" in VBT when LVDS
434 * register is uninitialized.
436 val = I915_READ(reg);
437 if (!(val & ~LVDS_DETECTED))
438 val = dev_priv->bios_lvds_val;
439 dev_priv->lvds_val = val;
441 return (val & LVDS_CLKB_POWER_MASK) == LVDS_CLKB_POWER_UP;
444 static const intel_limit_t *intel_ironlake_limit(struct drm_crtc *crtc,
447 struct drm_device *dev = crtc->dev;
448 struct drm_i915_private *dev_priv = dev->dev_private;
449 const intel_limit_t *limit;
451 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
452 if (is_dual_link_lvds(dev_priv, PCH_LVDS)) {
453 /* LVDS dual channel */
454 if (refclk == 100000)
455 limit = &intel_limits_ironlake_dual_lvds_100m;
457 limit = &intel_limits_ironlake_dual_lvds;
459 if (refclk == 100000)
460 limit = &intel_limits_ironlake_single_lvds_100m;
462 limit = &intel_limits_ironlake_single_lvds;
464 } else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT) ||
466 limit = &intel_limits_ironlake_display_port;
468 limit = &intel_limits_ironlake_dac;
473 static const intel_limit_t *intel_g4x_limit(struct drm_crtc *crtc)
475 struct drm_device *dev = crtc->dev;
476 struct drm_i915_private *dev_priv = dev->dev_private;
477 const intel_limit_t *limit;
479 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
480 if (is_dual_link_lvds(dev_priv, LVDS))
481 /* LVDS with dual channel */
482 limit = &intel_limits_g4x_dual_channel_lvds;
484 /* LVDS with dual channel */
485 limit = &intel_limits_g4x_single_channel_lvds;
486 } else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI) ||
487 intel_pipe_has_type(crtc, INTEL_OUTPUT_ANALOG)) {
488 limit = &intel_limits_g4x_hdmi;
489 } else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_SDVO)) {
490 limit = &intel_limits_g4x_sdvo;
491 } else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT)) {
492 limit = &intel_limits_g4x_display_port;
493 } else /* The option is for other outputs */
494 limit = &intel_limits_i9xx_sdvo;
499 static const intel_limit_t *intel_limit(struct drm_crtc *crtc, int refclk)
501 struct drm_device *dev = crtc->dev;
502 const intel_limit_t *limit;
504 if (HAS_PCH_SPLIT(dev))
505 limit = intel_ironlake_limit(crtc, refclk);
506 else if (IS_G4X(dev)) {
507 limit = intel_g4x_limit(crtc);
508 } else if (IS_PINEVIEW(dev)) {
509 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
510 limit = &intel_limits_pineview_lvds;
512 limit = &intel_limits_pineview_sdvo;
513 } else if (!IS_GEN2(dev)) {
514 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
515 limit = &intel_limits_i9xx_lvds;
517 limit = &intel_limits_i9xx_sdvo;
519 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
520 limit = &intel_limits_i8xx_lvds;
522 limit = &intel_limits_i8xx_dvo;
527 /* m1 is reserved as 0 in Pineview, n is a ring counter */
528 static void pineview_clock(int refclk, intel_clock_t *clock)
530 clock->m = clock->m2 + 2;
531 clock->p = clock->p1 * clock->p2;
532 clock->vco = refclk * clock->m / clock->n;
533 clock->dot = clock->vco / clock->p;
536 static void intel_clock(struct drm_device *dev, int refclk, intel_clock_t *clock)
538 if (IS_PINEVIEW(dev)) {
539 pineview_clock(refclk, clock);
542 clock->m = 5 * (clock->m1 + 2) + (clock->m2 + 2);
543 clock->p = clock->p1 * clock->p2;
544 clock->vco = refclk * clock->m / (clock->n + 2);
545 clock->dot = clock->vco / clock->p;
549 * Returns whether any output on the specified pipe is of the specified type
551 bool intel_pipe_has_type(struct drm_crtc *crtc, int type)
553 struct drm_device *dev = crtc->dev;
554 struct drm_mode_config *mode_config = &dev->mode_config;
555 struct intel_encoder *encoder;
557 list_for_each_entry(encoder, &mode_config->encoder_list, base.head)
558 if (encoder->base.crtc == crtc && encoder->type == type)
564 #define INTELPllInvalid(s) do { /* DRM_DEBUG(s); */ return false; } while (0)
566 * Returns whether the given set of divisors are valid for a given refclk with
567 * the given connectors.
570 static bool intel_PLL_is_valid(struct drm_device *dev,
571 const intel_limit_t *limit,
572 const intel_clock_t *clock)
574 if (clock->p1 < limit->p1.min || limit->p1.max < clock->p1)
575 INTELPllInvalid("p1 out of range\n");
576 if (clock->p < limit->p.min || limit->p.max < clock->p)
577 INTELPllInvalid("p out of range\n");
578 if (clock->m2 < limit->m2.min || limit->m2.max < clock->m2)
579 INTELPllInvalid("m2 out of range\n");
580 if (clock->m1 < limit->m1.min || limit->m1.max < clock->m1)
581 INTELPllInvalid("m1 out of range\n");
582 if (clock->m1 <= clock->m2 && !IS_PINEVIEW(dev))
583 INTELPllInvalid("m1 <= m2\n");
584 if (clock->m < limit->m.min || limit->m.max < clock->m)
585 INTELPllInvalid("m out of range\n");
586 if (clock->n < limit->n.min || limit->n.max < clock->n)
587 INTELPllInvalid("n out of range\n");
588 if (clock->vco < limit->vco.min || limit->vco.max < clock->vco)
589 INTELPllInvalid("vco out of range\n");
590 /* XXX: We may need to be checking "Dot clock" depending on the multiplier,
591 * connector, etc., rather than just a single range.
593 if (clock->dot < limit->dot.min || limit->dot.max < clock->dot)
594 INTELPllInvalid("dot out of range\n");
600 intel_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
601 int target, int refclk, intel_clock_t *match_clock,
602 intel_clock_t *best_clock)
605 struct drm_device *dev = crtc->dev;
606 struct drm_i915_private *dev_priv = dev->dev_private;
610 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) &&
611 (I915_READ(LVDS)) != 0) {
613 * For LVDS, if the panel is on, just rely on its current
614 * settings for dual-channel. We haven't figured out how to
615 * reliably set up different single/dual channel state, if we
618 if (is_dual_link_lvds(dev_priv, LVDS))
619 clock.p2 = limit->p2.p2_fast;
621 clock.p2 = limit->p2.p2_slow;
623 if (target < limit->p2.dot_limit)
624 clock.p2 = limit->p2.p2_slow;
626 clock.p2 = limit->p2.p2_fast;
629 memset(best_clock, 0, sizeof(*best_clock));
631 for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max;
633 for (clock.m2 = limit->m2.min;
634 clock.m2 <= limit->m2.max; clock.m2++) {
635 /* m1 is always 0 in Pineview */
636 if (clock.m2 >= clock.m1 && !IS_PINEVIEW(dev))
638 for (clock.n = limit->n.min;
639 clock.n <= limit->n.max; clock.n++) {
640 for (clock.p1 = limit->p1.min;
641 clock.p1 <= limit->p1.max; clock.p1++) {
644 intel_clock(dev, refclk, &clock);
645 if (!intel_PLL_is_valid(dev, limit,
649 clock.p != match_clock->p)
652 this_err = abs(clock.dot - target);
653 if (this_err < err) {
662 return (err != target);
666 intel_g4x_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
667 int target, int refclk, intel_clock_t *match_clock,
668 intel_clock_t *best_clock)
670 struct drm_device *dev = crtc->dev;
671 struct drm_i915_private *dev_priv = dev->dev_private;
675 /* approximately equals target * 0.00585 */
676 int err_most = (target >> 8) + (target >> 9);
679 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
682 if (HAS_PCH_SPLIT(dev))
686 if ((I915_READ(lvds_reg) & LVDS_CLKB_POWER_MASK) ==
688 clock.p2 = limit->p2.p2_fast;
690 clock.p2 = limit->p2.p2_slow;
692 if (target < limit->p2.dot_limit)
693 clock.p2 = limit->p2.p2_slow;
695 clock.p2 = limit->p2.p2_fast;
698 memset(best_clock, 0, sizeof(*best_clock));
699 max_n = limit->n.max;
700 /* based on hardware requirement, prefer smaller n to precision */
701 for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) {
702 /* based on hardware requirement, prefere larger m1,m2 */
703 for (clock.m1 = limit->m1.max;
704 clock.m1 >= limit->m1.min; clock.m1--) {
705 for (clock.m2 = limit->m2.max;
706 clock.m2 >= limit->m2.min; clock.m2--) {
707 for (clock.p1 = limit->p1.max;
708 clock.p1 >= limit->p1.min; clock.p1--) {
711 intel_clock(dev, refclk, &clock);
712 if (!intel_PLL_is_valid(dev, limit,
716 clock.p != match_clock->p)
719 this_err = abs(clock.dot - target);
720 if (this_err < err_most) {
734 intel_find_pll_ironlake_dp(const intel_limit_t *limit, struct drm_crtc *crtc,
735 int target, int refclk, intel_clock_t *match_clock,
736 intel_clock_t *best_clock)
738 struct drm_device *dev = crtc->dev;
741 if (target < 200000) {
754 intel_clock(dev, refclk, &clock);
755 memcpy(best_clock, &clock, sizeof(intel_clock_t));
759 /* DisplayPort has only two frequencies, 162MHz and 270MHz */
761 intel_find_pll_g4x_dp(const intel_limit_t *limit, struct drm_crtc *crtc,
762 int target, int refclk, intel_clock_t *match_clock,
763 intel_clock_t *best_clock)
766 if (target < 200000) {
779 clock.m = 5 * (clock.m1 + 2) + (clock.m2 + 2);
780 clock.p = (clock.p1 * clock.p2);
781 clock.dot = 96000 * clock.m / (clock.n + 2) / clock.p;
783 memcpy(best_clock, &clock, sizeof(intel_clock_t));
787 static void ironlake_wait_for_vblank(struct drm_device *dev, int pipe)
789 struct drm_i915_private *dev_priv = dev->dev_private;
790 u32 frame, frame_reg = PIPEFRAME(pipe);
792 frame = I915_READ(frame_reg);
794 if (wait_for(I915_READ_NOTRACE(frame_reg) != frame, 50))
795 DRM_DEBUG_KMS("vblank wait timed out\n");
799 * intel_wait_for_vblank - wait for vblank on a given pipe
801 * @pipe: pipe to wait for
803 * Wait for vblank to occur on a given pipe. Needed for various bits of
806 void intel_wait_for_vblank(struct drm_device *dev, int pipe)
808 struct drm_i915_private *dev_priv = dev->dev_private;
809 int pipestat_reg = PIPESTAT(pipe);
811 if (INTEL_INFO(dev)->gen >= 5) {
812 ironlake_wait_for_vblank(dev, pipe);
816 /* Clear existing vblank status. Note this will clear any other
817 * sticky status fields as well.
819 * This races with i915_driver_irq_handler() with the result
820 * that either function could miss a vblank event. Here it is not
821 * fatal, as we will either wait upon the next vblank interrupt or
822 * timeout. Generally speaking intel_wait_for_vblank() is only
823 * called during modeset at which time the GPU should be idle and
824 * should *not* be performing page flips and thus not waiting on
826 * Currently, the result of us stealing a vblank from the irq
827 * handler is that a single frame will be skipped during swapbuffers.
829 I915_WRITE(pipestat_reg,
830 I915_READ(pipestat_reg) | PIPE_VBLANK_INTERRUPT_STATUS);
832 /* Wait for vblank interrupt bit to set */
833 if (wait_for(I915_READ(pipestat_reg) &
834 PIPE_VBLANK_INTERRUPT_STATUS,
836 DRM_DEBUG_KMS("vblank wait timed out\n");
840 * intel_wait_for_pipe_off - wait for pipe to turn off
842 * @pipe: pipe to wait for
844 * After disabling a pipe, we can't wait for vblank in the usual way,
845 * spinning on the vblank interrupt status bit, since we won't actually
846 * see an interrupt when the pipe is disabled.
849 * wait for the pipe register state bit to turn off
852 * wait for the display line value to settle (it usually
853 * ends up stopping at the start of the next frame).
856 void intel_wait_for_pipe_off(struct drm_device *dev, int pipe)
858 struct drm_i915_private *dev_priv = dev->dev_private;
860 if (INTEL_INFO(dev)->gen >= 4) {
861 int reg = PIPECONF(pipe);
863 /* Wait for the Pipe State to go off */
864 if (wait_for((I915_READ(reg) & I965_PIPECONF_ACTIVE) == 0,
866 DRM_DEBUG_KMS("pipe_off wait timed out\n");
868 u32 last_line, line_mask;
869 int reg = PIPEDSL(pipe);
870 unsigned long timeout = jiffies + msecs_to_jiffies(100);
873 line_mask = DSL_LINEMASK_GEN2;
875 line_mask = DSL_LINEMASK_GEN3;
877 /* Wait for the display line to settle */
879 last_line = I915_READ(reg) & line_mask;
881 } while (((I915_READ(reg) & line_mask) != last_line) &&
882 time_after(timeout, jiffies));
883 if (time_after(jiffies, timeout))
884 DRM_DEBUG_KMS("pipe_off wait timed out\n");
888 static const char *state_string(bool enabled)
890 return enabled ? "on" : "off";
893 /* Only for pre-ILK configs */
894 static void assert_pll(struct drm_i915_private *dev_priv,
895 enum pipe pipe, bool state)
902 val = I915_READ(reg);
903 cur_state = !!(val & DPLL_VCO_ENABLE);
904 WARN(cur_state != state,
905 "PLL state assertion failure (expected %s, current %s)\n",
906 state_string(state), state_string(cur_state));
908 #define assert_pll_enabled(d, p) assert_pll(d, p, true)
909 #define assert_pll_disabled(d, p) assert_pll(d, p, false)
912 static void assert_pch_pll(struct drm_i915_private *dev_priv,
913 struct intel_crtc *intel_crtc, bool state)
919 if (HAS_PCH_LPT(dev_priv->dev)) {
920 DRM_DEBUG_DRIVER("LPT detected: skipping PCH PLL test\n");
924 if (!intel_crtc->pch_pll) {
925 WARN(1, "asserting PCH PLL enabled with no PLL\n");
929 if (HAS_PCH_CPT(dev_priv->dev)) {
932 pch_dpll = I915_READ(PCH_DPLL_SEL);
934 /* Make sure the selected PLL is enabled to the transcoder */
935 WARN(!((pch_dpll >> (4 * intel_crtc->pipe)) & 8),
936 "transcoder %d PLL not enabled\n", intel_crtc->pipe);
939 reg = intel_crtc->pch_pll->pll_reg;
940 val = I915_READ(reg);
941 cur_state = !!(val & DPLL_VCO_ENABLE);
942 WARN(cur_state != state,
943 "PCH PLL state assertion failure (expected %s, current %s)\n",
944 state_string(state), state_string(cur_state));
946 #define assert_pch_pll_enabled(d, p) assert_pch_pll(d, p, true)
947 #define assert_pch_pll_disabled(d, p) assert_pch_pll(d, p, false)
949 static void assert_fdi_tx(struct drm_i915_private *dev_priv,
950 enum pipe pipe, bool state)
956 if (IS_HASWELL(dev_priv->dev)) {
957 /* On Haswell, DDI is used instead of FDI_TX_CTL */
958 reg = DDI_FUNC_CTL(pipe);
959 val = I915_READ(reg);
960 cur_state = !!(val & PIPE_DDI_FUNC_ENABLE);
962 reg = FDI_TX_CTL(pipe);
963 val = I915_READ(reg);
964 cur_state = !!(val & FDI_TX_ENABLE);
966 WARN(cur_state != state,
967 "FDI TX state assertion failure (expected %s, current %s)\n",
968 state_string(state), state_string(cur_state));
970 #define assert_fdi_tx_enabled(d, p) assert_fdi_tx(d, p, true)
971 #define assert_fdi_tx_disabled(d, p) assert_fdi_tx(d, p, false)
973 static void assert_fdi_rx(struct drm_i915_private *dev_priv,
974 enum pipe pipe, bool state)
980 if (IS_HASWELL(dev_priv->dev) && pipe > 0) {
981 DRM_ERROR("Attempting to enable FDI_RX on Haswell pipe > 0\n");
984 reg = FDI_RX_CTL(pipe);
985 val = I915_READ(reg);
986 cur_state = !!(val & FDI_RX_ENABLE);
988 WARN(cur_state != state,
989 "FDI RX state assertion failure (expected %s, current %s)\n",
990 state_string(state), state_string(cur_state));
992 #define assert_fdi_rx_enabled(d, p) assert_fdi_rx(d, p, true)
993 #define assert_fdi_rx_disabled(d, p) assert_fdi_rx(d, p, false)
995 static void assert_fdi_tx_pll_enabled(struct drm_i915_private *dev_priv,
1001 /* ILK FDI PLL is always enabled */
1002 if (dev_priv->info->gen == 5)
1005 /* On Haswell, DDI ports are responsible for the FDI PLL setup */
1006 if (IS_HASWELL(dev_priv->dev))
1009 reg = FDI_TX_CTL(pipe);
1010 val = I915_READ(reg);
1011 WARN(!(val & FDI_TX_PLL_ENABLE), "FDI TX PLL assertion failure, should be active but is disabled\n");
1014 static void assert_fdi_rx_pll_enabled(struct drm_i915_private *dev_priv,
1020 if (IS_HASWELL(dev_priv->dev) && pipe > 0) {
1021 DRM_ERROR("Attempting to enable FDI on Haswell with pipe > 0\n");
1024 reg = FDI_RX_CTL(pipe);
1025 val = I915_READ(reg);
1026 WARN(!(val & FDI_RX_PLL_ENABLE), "FDI RX PLL assertion failure, should be active but is disabled\n");
1029 static void assert_panel_unlocked(struct drm_i915_private *dev_priv,
1032 int pp_reg, lvds_reg;
1034 enum pipe panel_pipe = PIPE_A;
1037 if (HAS_PCH_SPLIT(dev_priv->dev)) {
1038 pp_reg = PCH_PP_CONTROL;
1039 lvds_reg = PCH_LVDS;
1041 pp_reg = PP_CONTROL;
1045 val = I915_READ(pp_reg);
1046 if (!(val & PANEL_POWER_ON) ||
1047 ((val & PANEL_UNLOCK_REGS) == PANEL_UNLOCK_REGS))
1050 if (I915_READ(lvds_reg) & LVDS_PIPEB_SELECT)
1051 panel_pipe = PIPE_B;
1053 WARN(panel_pipe == pipe && locked,
1054 "panel assertion failure, pipe %c regs locked\n",
1058 void assert_pipe(struct drm_i915_private *dev_priv,
1059 enum pipe pipe, bool state)
1065 /* if we need the pipe A quirk it must be always on */
1066 if (pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE)
1069 reg = PIPECONF(pipe);
1070 val = I915_READ(reg);
1071 cur_state = !!(val & PIPECONF_ENABLE);
1072 WARN(cur_state != state,
1073 "pipe %c assertion failure (expected %s, current %s)\n",
1074 pipe_name(pipe), state_string(state), state_string(cur_state));
1077 static void assert_plane(struct drm_i915_private *dev_priv,
1078 enum plane plane, bool state)
1084 reg = DSPCNTR(plane);
1085 val = I915_READ(reg);
1086 cur_state = !!(val & DISPLAY_PLANE_ENABLE);
1087 WARN(cur_state != state,
1088 "plane %c assertion failure (expected %s, current %s)\n",
1089 plane_name(plane), state_string(state), state_string(cur_state));
1092 #define assert_plane_enabled(d, p) assert_plane(d, p, true)
1093 #define assert_plane_disabled(d, p) assert_plane(d, p, false)
1095 static void assert_planes_disabled(struct drm_i915_private *dev_priv,
1102 /* Planes are fixed to pipes on ILK+ */
1103 if (HAS_PCH_SPLIT(dev_priv->dev)) {
1104 reg = DSPCNTR(pipe);
1105 val = I915_READ(reg);
1106 WARN((val & DISPLAY_PLANE_ENABLE),
1107 "plane %c assertion failure, should be disabled but not\n",
1112 /* Need to check both planes against the pipe */
1113 for (i = 0; i < 2; i++) {
1115 val = I915_READ(reg);
1116 cur_pipe = (val & DISPPLANE_SEL_PIPE_MASK) >>
1117 DISPPLANE_SEL_PIPE_SHIFT;
1118 WARN((val & DISPLAY_PLANE_ENABLE) && pipe == cur_pipe,
1119 "plane %c assertion failure, should be off on pipe %c but is still active\n",
1120 plane_name(i), pipe_name(pipe));
1124 static void assert_pch_refclk_enabled(struct drm_i915_private *dev_priv)
1129 if (HAS_PCH_LPT(dev_priv->dev)) {
1130 DRM_DEBUG_DRIVER("LPT does not has PCH refclk, skipping check\n");
1134 val = I915_READ(PCH_DREF_CONTROL);
1135 enabled = !!(val & (DREF_SSC_SOURCE_MASK | DREF_NONSPREAD_SOURCE_MASK |
1136 DREF_SUPERSPREAD_SOURCE_MASK));
1137 WARN(!enabled, "PCH refclk assertion failure, should be active but is disabled\n");
1140 static void assert_transcoder_disabled(struct drm_i915_private *dev_priv,
1147 reg = TRANSCONF(pipe);
1148 val = I915_READ(reg);
1149 enabled = !!(val & TRANS_ENABLE);
1151 "transcoder assertion failed, should be off on pipe %c but is still active\n",
1155 static bool dp_pipe_enabled(struct drm_i915_private *dev_priv,
1156 enum pipe pipe, u32 port_sel, u32 val)
1158 if ((val & DP_PORT_EN) == 0)
1161 if (HAS_PCH_CPT(dev_priv->dev)) {
1162 u32 trans_dp_ctl_reg = TRANS_DP_CTL(pipe);
1163 u32 trans_dp_ctl = I915_READ(trans_dp_ctl_reg);
1164 if ((trans_dp_ctl & TRANS_DP_PORT_SEL_MASK) != port_sel)
1167 if ((val & DP_PIPE_MASK) != (pipe << 30))
1173 static bool hdmi_pipe_enabled(struct drm_i915_private *dev_priv,
1174 enum pipe pipe, u32 val)
1176 if ((val & PORT_ENABLE) == 0)
1179 if (HAS_PCH_CPT(dev_priv->dev)) {
1180 if ((val & PORT_TRANS_SEL_MASK) != PORT_TRANS_SEL_CPT(pipe))
1183 if ((val & TRANSCODER_MASK) != TRANSCODER(pipe))
1189 static bool lvds_pipe_enabled(struct drm_i915_private *dev_priv,
1190 enum pipe pipe, u32 val)
1192 if ((val & LVDS_PORT_EN) == 0)
1195 if (HAS_PCH_CPT(dev_priv->dev)) {
1196 if ((val & PORT_TRANS_SEL_MASK) != PORT_TRANS_SEL_CPT(pipe))
1199 if ((val & LVDS_PIPE_MASK) != LVDS_PIPE(pipe))
1205 static bool adpa_pipe_enabled(struct drm_i915_private *dev_priv,
1206 enum pipe pipe, u32 val)
1208 if ((val & ADPA_DAC_ENABLE) == 0)
1210 if (HAS_PCH_CPT(dev_priv->dev)) {
1211 if ((val & PORT_TRANS_SEL_MASK) != PORT_TRANS_SEL_CPT(pipe))
1214 if ((val & ADPA_PIPE_SELECT_MASK) != ADPA_PIPE_SELECT(pipe))
1220 static void assert_pch_dp_disabled(struct drm_i915_private *dev_priv,
1221 enum pipe pipe, int reg, u32 port_sel)
1223 u32 val = I915_READ(reg);
1224 WARN(dp_pipe_enabled(dev_priv, pipe, port_sel, val),
1225 "PCH DP (0x%08x) enabled on transcoder %c, should be disabled\n",
1226 reg, pipe_name(pipe));
1229 static void assert_pch_hdmi_disabled(struct drm_i915_private *dev_priv,
1230 enum pipe pipe, int reg)
1232 u32 val = I915_READ(reg);
1233 WARN(hdmi_pipe_enabled(dev_priv, val, pipe),
1234 "PCH HDMI (0x%08x) enabled on transcoder %c, should be disabled\n",
1235 reg, pipe_name(pipe));
1238 static void assert_pch_ports_disabled(struct drm_i915_private *dev_priv,
1244 assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_B, TRANS_DP_PORT_SEL_B);
1245 assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_C, TRANS_DP_PORT_SEL_C);
1246 assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_D, TRANS_DP_PORT_SEL_D);
1249 val = I915_READ(reg);
1250 WARN(adpa_pipe_enabled(dev_priv, val, pipe),
1251 "PCH VGA enabled on transcoder %c, should be disabled\n",
1255 val = I915_READ(reg);
1256 WARN(lvds_pipe_enabled(dev_priv, val, pipe),
1257 "PCH LVDS enabled on transcoder %c, should be disabled\n",
1260 assert_pch_hdmi_disabled(dev_priv, pipe, HDMIB);
1261 assert_pch_hdmi_disabled(dev_priv, pipe, HDMIC);
1262 assert_pch_hdmi_disabled(dev_priv, pipe, HDMID);
1266 * intel_enable_pll - enable a PLL
1267 * @dev_priv: i915 private structure
1268 * @pipe: pipe PLL to enable
1270 * Enable @pipe's PLL so we can start pumping pixels from a plane. Check to
1271 * make sure the PLL reg is writable first though, since the panel write
1272 * protect mechanism may be enabled.
1274 * Note! This is for pre-ILK only.
1276 static void intel_enable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
1281 /* No really, not for ILK+ */
1282 BUG_ON(dev_priv->info->gen >= 5);
1284 /* PLL is protected by panel, make sure we can write it */
1285 if (IS_MOBILE(dev_priv->dev) && !IS_I830(dev_priv->dev))
1286 assert_panel_unlocked(dev_priv, pipe);
1289 val = I915_READ(reg);
1290 val |= DPLL_VCO_ENABLE;
1292 /* We do this three times for luck */
1293 I915_WRITE(reg, val);
1295 udelay(150); /* wait for warmup */
1296 I915_WRITE(reg, val);
1298 udelay(150); /* wait for warmup */
1299 I915_WRITE(reg, val);
1301 udelay(150); /* wait for warmup */
1305 * intel_disable_pll - disable a PLL
1306 * @dev_priv: i915 private structure
1307 * @pipe: pipe PLL to disable
1309 * Disable the PLL for @pipe, making sure the pipe is off first.
1311 * Note! This is for pre-ILK only.
1313 static void intel_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
1318 /* Don't disable pipe A or pipe A PLLs if needed */
1319 if (pipe == PIPE_A && (dev_priv->quirks & QUIRK_PIPEA_FORCE))
1322 /* Make sure the pipe isn't still relying on us */
1323 assert_pipe_disabled(dev_priv, pipe);
1326 val = I915_READ(reg);
1327 val &= ~DPLL_VCO_ENABLE;
1328 I915_WRITE(reg, val);
1334 intel_sbi_write(struct drm_i915_private *dev_priv, u16 reg, u32 value)
1336 unsigned long flags;
1338 spin_lock_irqsave(&dev_priv->dpio_lock, flags);
1339 if (wait_for((I915_READ(SBI_CTL_STAT) & SBI_READY) == 0,
1341 DRM_ERROR("timeout waiting for SBI to become ready\n");
1345 I915_WRITE(SBI_ADDR,
1347 I915_WRITE(SBI_DATA,
1349 I915_WRITE(SBI_CTL_STAT,
1353 if (wait_for((I915_READ(SBI_CTL_STAT) & (SBI_READY | SBI_RESPONSE_SUCCESS)) == 0,
1355 DRM_ERROR("timeout waiting for SBI to complete write transaction\n");
1360 spin_unlock_irqrestore(&dev_priv->dpio_lock, flags);
1364 intel_sbi_read(struct drm_i915_private *dev_priv, u16 reg)
1366 unsigned long flags;
1369 spin_lock_irqsave(&dev_priv->dpio_lock, flags);
1370 if (wait_for((I915_READ(SBI_CTL_STAT) & SBI_READY) == 0,
1372 DRM_ERROR("timeout waiting for SBI to become ready\n");
1376 I915_WRITE(SBI_ADDR,
1378 I915_WRITE(SBI_CTL_STAT,
1382 if (wait_for((I915_READ(SBI_CTL_STAT) & (SBI_READY | SBI_RESPONSE_SUCCESS)) == 0,
1384 DRM_ERROR("timeout waiting for SBI to complete read transaction\n");
1388 value = I915_READ(SBI_DATA);
1391 spin_unlock_irqrestore(&dev_priv->dpio_lock, flags);
1396 * intel_enable_pch_pll - enable PCH PLL
1397 * @dev_priv: i915 private structure
1398 * @pipe: pipe PLL to enable
1400 * The PCH PLL needs to be enabled before the PCH transcoder, since it
1401 * drives the transcoder clock.
1403 static void intel_enable_pch_pll(struct intel_crtc *intel_crtc)
1405 struct drm_i915_private *dev_priv = intel_crtc->base.dev->dev_private;
1406 struct intel_pch_pll *pll = intel_crtc->pch_pll;
1410 /* PCH only available on ILK+ */
1411 BUG_ON(dev_priv->info->gen < 5);
1412 BUG_ON(pll == NULL);
1413 BUG_ON(pll->refcount == 0);
1415 DRM_DEBUG_KMS("enable PCH PLL %x (active %d, on? %d)for crtc %d\n",
1416 pll->pll_reg, pll->active, pll->on,
1417 intel_crtc->base.base.id);
1419 /* PCH refclock must be enabled first */
1420 assert_pch_refclk_enabled(dev_priv);
1422 if (pll->active++ && pll->on) {
1423 assert_pch_pll_enabled(dev_priv, intel_crtc);
1427 DRM_DEBUG_KMS("enabling PCH PLL %x\n", pll->pll_reg);
1430 val = I915_READ(reg);
1431 val |= DPLL_VCO_ENABLE;
1432 I915_WRITE(reg, val);
1439 static void intel_disable_pch_pll(struct intel_crtc *intel_crtc)
1441 struct drm_i915_private *dev_priv = intel_crtc->base.dev->dev_private;
1442 struct intel_pch_pll *pll = intel_crtc->pch_pll;
1446 /* PCH only available on ILK+ */
1447 BUG_ON(dev_priv->info->gen < 5);
1451 BUG_ON(pll->refcount == 0);
1453 DRM_DEBUG_KMS("disable PCH PLL %x (active %d, on? %d) for crtc %d\n",
1454 pll->pll_reg, pll->active, pll->on,
1455 intel_crtc->base.base.id);
1457 BUG_ON(pll->active == 0);
1458 if (--pll->active) {
1459 assert_pch_pll_enabled(dev_priv, intel_crtc);
1463 DRM_DEBUG_KMS("disabling PCH PLL %x\n", pll->pll_reg);
1465 /* Make sure transcoder isn't still depending on us */
1466 assert_transcoder_disabled(dev_priv, intel_crtc->pipe);
1469 val = I915_READ(reg);
1470 val &= ~DPLL_VCO_ENABLE;
1471 I915_WRITE(reg, val);
1478 static void intel_enable_transcoder(struct drm_i915_private *dev_priv,
1482 u32 val, pipeconf_val;
1483 struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
1485 /* PCH only available on ILK+ */
1486 BUG_ON(dev_priv->info->gen < 5);
1488 /* Make sure PCH DPLL is enabled */
1489 assert_pch_pll_enabled(dev_priv, to_intel_crtc(crtc));
1491 /* FDI must be feeding us bits for PCH ports */
1492 assert_fdi_tx_enabled(dev_priv, pipe);
1493 assert_fdi_rx_enabled(dev_priv, pipe);
1495 if (IS_HASWELL(dev_priv->dev) && pipe > 0) {
1496 DRM_ERROR("Attempting to enable transcoder on Haswell with pipe > 0\n");
1499 reg = TRANSCONF(pipe);
1500 val = I915_READ(reg);
1501 pipeconf_val = I915_READ(PIPECONF(pipe));
1503 if (HAS_PCH_IBX(dev_priv->dev)) {
1505 * make the BPC in transcoder be consistent with
1506 * that in pipeconf reg.
1508 val &= ~PIPE_BPC_MASK;
1509 val |= pipeconf_val & PIPE_BPC_MASK;
1512 val &= ~TRANS_INTERLACE_MASK;
1513 if ((pipeconf_val & PIPECONF_INTERLACE_MASK) == PIPECONF_INTERLACED_ILK)
1514 if (HAS_PCH_IBX(dev_priv->dev) &&
1515 intel_pipe_has_type(crtc, INTEL_OUTPUT_SDVO))
1516 val |= TRANS_LEGACY_INTERLACED_ILK;
1518 val |= TRANS_INTERLACED;
1520 val |= TRANS_PROGRESSIVE;
1522 I915_WRITE(reg, val | TRANS_ENABLE);
1523 if (wait_for(I915_READ(reg) & TRANS_STATE_ENABLE, 100))
1524 DRM_ERROR("failed to enable transcoder %d\n", pipe);
1527 static void intel_disable_transcoder(struct drm_i915_private *dev_priv,
1533 /* FDI relies on the transcoder */
1534 assert_fdi_tx_disabled(dev_priv, pipe);
1535 assert_fdi_rx_disabled(dev_priv, pipe);
1537 /* Ports must be off as well */
1538 assert_pch_ports_disabled(dev_priv, pipe);
1540 reg = TRANSCONF(pipe);
1541 val = I915_READ(reg);
1542 val &= ~TRANS_ENABLE;
1543 I915_WRITE(reg, val);
1544 /* wait for PCH transcoder off, transcoder state */
1545 if (wait_for((I915_READ(reg) & TRANS_STATE_ENABLE) == 0, 50))
1546 DRM_ERROR("failed to disable transcoder %d\n", pipe);
1550 * intel_enable_pipe - enable a pipe, asserting requirements
1551 * @dev_priv: i915 private structure
1552 * @pipe: pipe to enable
1553 * @pch_port: on ILK+, is this pipe driving a PCH port or not
1555 * Enable @pipe, making sure that various hardware specific requirements
1556 * are met, if applicable, e.g. PLL enabled, LVDS pairs enabled, etc.
1558 * @pipe should be %PIPE_A or %PIPE_B.
1560 * Will wait until the pipe is actually running (i.e. first vblank) before
1563 static void intel_enable_pipe(struct drm_i915_private *dev_priv, enum pipe pipe,
1570 * A pipe without a PLL won't actually be able to drive bits from
1571 * a plane. On ILK+ the pipe PLLs are integrated, so we don't
1574 if (!HAS_PCH_SPLIT(dev_priv->dev))
1575 assert_pll_enabled(dev_priv, pipe);
1578 /* if driving the PCH, we need FDI enabled */
1579 assert_fdi_rx_pll_enabled(dev_priv, pipe);
1580 assert_fdi_tx_pll_enabled(dev_priv, pipe);
1582 /* FIXME: assert CPU port conditions for SNB+ */
1585 reg = PIPECONF(pipe);
1586 val = I915_READ(reg);
1587 if (val & PIPECONF_ENABLE)
1590 I915_WRITE(reg, val | PIPECONF_ENABLE);
1591 intel_wait_for_vblank(dev_priv->dev, pipe);
1595 * intel_disable_pipe - disable a pipe, asserting requirements
1596 * @dev_priv: i915 private structure
1597 * @pipe: pipe to disable
1599 * Disable @pipe, making sure that various hardware specific requirements
1600 * are met, if applicable, e.g. plane disabled, panel fitter off, etc.
1602 * @pipe should be %PIPE_A or %PIPE_B.
1604 * Will wait until the pipe has shut down before returning.
1606 static void intel_disable_pipe(struct drm_i915_private *dev_priv,
1613 * Make sure planes won't keep trying to pump pixels to us,
1614 * or we might hang the display.
1616 assert_planes_disabled(dev_priv, pipe);
1618 /* Don't disable pipe A or pipe A PLLs if needed */
1619 if (pipe == PIPE_A && (dev_priv->quirks & QUIRK_PIPEA_FORCE))
1622 reg = PIPECONF(pipe);
1623 val = I915_READ(reg);
1624 if ((val & PIPECONF_ENABLE) == 0)
1627 I915_WRITE(reg, val & ~PIPECONF_ENABLE);
1628 intel_wait_for_pipe_off(dev_priv->dev, pipe);
1632 * Plane regs are double buffered, going from enabled->disabled needs a
1633 * trigger in order to latch. The display address reg provides this.
1635 void intel_flush_display_plane(struct drm_i915_private *dev_priv,
1638 I915_WRITE(DSPADDR(plane), I915_READ(DSPADDR(plane)));
1639 I915_WRITE(DSPSURF(plane), I915_READ(DSPSURF(plane)));
1643 * intel_enable_plane - enable a display plane on a given pipe
1644 * @dev_priv: i915 private structure
1645 * @plane: plane to enable
1646 * @pipe: pipe being fed
1648 * Enable @plane on @pipe, making sure that @pipe is running first.
1650 static void intel_enable_plane(struct drm_i915_private *dev_priv,
1651 enum plane plane, enum pipe pipe)
1656 /* If the pipe isn't enabled, we can't pump pixels and may hang */
1657 assert_pipe_enabled(dev_priv, pipe);
1659 reg = DSPCNTR(plane);
1660 val = I915_READ(reg);
1661 if (val & DISPLAY_PLANE_ENABLE)
1664 I915_WRITE(reg, val | DISPLAY_PLANE_ENABLE);
1665 intel_flush_display_plane(dev_priv, plane);
1666 intel_wait_for_vblank(dev_priv->dev, pipe);
1670 * intel_disable_plane - disable a display plane
1671 * @dev_priv: i915 private structure
1672 * @plane: plane to disable
1673 * @pipe: pipe consuming the data
1675 * Disable @plane; should be an independent operation.
1677 static void intel_disable_plane(struct drm_i915_private *dev_priv,
1678 enum plane plane, enum pipe pipe)
1683 reg = DSPCNTR(plane);
1684 val = I915_READ(reg);
1685 if ((val & DISPLAY_PLANE_ENABLE) == 0)
1688 I915_WRITE(reg, val & ~DISPLAY_PLANE_ENABLE);
1689 intel_flush_display_plane(dev_priv, plane);
1690 intel_wait_for_vblank(dev_priv->dev, pipe);
1693 static void disable_pch_dp(struct drm_i915_private *dev_priv,
1694 enum pipe pipe, int reg, u32 port_sel)
1696 u32 val = I915_READ(reg);
1697 if (dp_pipe_enabled(dev_priv, pipe, port_sel, val)) {
1698 DRM_DEBUG_KMS("Disabling pch dp %x on pipe %d\n", reg, pipe);
1699 I915_WRITE(reg, val & ~DP_PORT_EN);
1703 static void disable_pch_hdmi(struct drm_i915_private *dev_priv,
1704 enum pipe pipe, int reg)
1706 u32 val = I915_READ(reg);
1707 if (hdmi_pipe_enabled(dev_priv, val, pipe)) {
1708 DRM_DEBUG_KMS("Disabling pch HDMI %x on pipe %d\n",
1710 I915_WRITE(reg, val & ~PORT_ENABLE);
1714 /* Disable any ports connected to this transcoder */
1715 static void intel_disable_pch_ports(struct drm_i915_private *dev_priv,
1720 val = I915_READ(PCH_PP_CONTROL);
1721 I915_WRITE(PCH_PP_CONTROL, val | PANEL_UNLOCK_REGS);
1723 disable_pch_dp(dev_priv, pipe, PCH_DP_B, TRANS_DP_PORT_SEL_B);
1724 disable_pch_dp(dev_priv, pipe, PCH_DP_C, TRANS_DP_PORT_SEL_C);
1725 disable_pch_dp(dev_priv, pipe, PCH_DP_D, TRANS_DP_PORT_SEL_D);
1728 val = I915_READ(reg);
1729 if (adpa_pipe_enabled(dev_priv, val, pipe))
1730 I915_WRITE(reg, val & ~ADPA_DAC_ENABLE);
1733 val = I915_READ(reg);
1734 if (lvds_pipe_enabled(dev_priv, val, pipe)) {
1735 DRM_DEBUG_KMS("disable lvds on pipe %d val 0x%08x\n", pipe, val);
1736 I915_WRITE(reg, val & ~LVDS_PORT_EN);
1741 disable_pch_hdmi(dev_priv, pipe, HDMIB);
1742 disable_pch_hdmi(dev_priv, pipe, HDMIC);
1743 disable_pch_hdmi(dev_priv, pipe, HDMID);
1747 intel_pin_and_fence_fb_obj(struct drm_device *dev,
1748 struct drm_i915_gem_object *obj,
1749 struct intel_ring_buffer *pipelined)
1751 struct drm_i915_private *dev_priv = dev->dev_private;
1755 switch (obj->tiling_mode) {
1756 case I915_TILING_NONE:
1757 if (IS_BROADWATER(dev) || IS_CRESTLINE(dev))
1758 alignment = 128 * 1024;
1759 else if (INTEL_INFO(dev)->gen >= 4)
1760 alignment = 4 * 1024;
1762 alignment = 64 * 1024;
1765 /* pin() will align the object as required by fence */
1769 /* FIXME: Is this true? */
1770 DRM_ERROR("Y tiled not allowed for scan out buffers\n");
1776 dev_priv->mm.interruptible = false;
1777 ret = i915_gem_object_pin_to_display_plane(obj, alignment, pipelined);
1779 goto err_interruptible;
1781 /* Install a fence for tiled scan-out. Pre-i965 always needs a
1782 * fence, whereas 965+ only requires a fence if using
1783 * framebuffer compression. For simplicity, we always install
1784 * a fence as the cost is not that onerous.
1786 ret = i915_gem_object_get_fence(obj);
1790 i915_gem_object_pin_fence(obj);
1792 dev_priv->mm.interruptible = true;
1796 i915_gem_object_unpin(obj);
1798 dev_priv->mm.interruptible = true;
1802 void intel_unpin_fb_obj(struct drm_i915_gem_object *obj)
1804 i915_gem_object_unpin_fence(obj);
1805 i915_gem_object_unpin(obj);
1808 static int i9xx_update_plane(struct drm_crtc *crtc, struct drm_framebuffer *fb,
1811 struct drm_device *dev = crtc->dev;
1812 struct drm_i915_private *dev_priv = dev->dev_private;
1813 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1814 struct intel_framebuffer *intel_fb;
1815 struct drm_i915_gem_object *obj;
1816 int plane = intel_crtc->plane;
1817 unsigned long Start, Offset;
1826 DRM_ERROR("Can't update plane %d in SAREA\n", plane);
1830 intel_fb = to_intel_framebuffer(fb);
1831 obj = intel_fb->obj;
1833 reg = DSPCNTR(plane);
1834 dspcntr = I915_READ(reg);
1835 /* Mask out pixel format bits in case we change it */
1836 dspcntr &= ~DISPPLANE_PIXFORMAT_MASK;
1837 switch (fb->bits_per_pixel) {
1839 dspcntr |= DISPPLANE_8BPP;
1842 if (fb->depth == 15)
1843 dspcntr |= DISPPLANE_15_16BPP;
1845 dspcntr |= DISPPLANE_16BPP;
1849 dspcntr |= DISPPLANE_32BPP_NO_ALPHA;
1852 DRM_ERROR("Unknown color depth %d\n", fb->bits_per_pixel);
1855 if (INTEL_INFO(dev)->gen >= 4) {
1856 if (obj->tiling_mode != I915_TILING_NONE)
1857 dspcntr |= DISPPLANE_TILED;
1859 dspcntr &= ~DISPPLANE_TILED;
1862 I915_WRITE(reg, dspcntr);
1864 Start = obj->gtt_offset;
1865 Offset = y * fb->pitches[0] + x * (fb->bits_per_pixel / 8);
1867 DRM_DEBUG_KMS("Writing base %08lX %08lX %d %d %d\n",
1868 Start, Offset, x, y, fb->pitches[0]);
1869 I915_WRITE(DSPSTRIDE(plane), fb->pitches[0]);
1870 if (INTEL_INFO(dev)->gen >= 4) {
1871 I915_MODIFY_DISPBASE(DSPSURF(plane), Start);
1872 I915_WRITE(DSPTILEOFF(plane), (y << 16) | x);
1873 I915_WRITE(DSPADDR(plane), Offset);
1875 I915_WRITE(DSPADDR(plane), Start + Offset);
1881 static int ironlake_update_plane(struct drm_crtc *crtc,
1882 struct drm_framebuffer *fb, int x, int y)
1884 struct drm_device *dev = crtc->dev;
1885 struct drm_i915_private *dev_priv = dev->dev_private;
1886 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1887 struct intel_framebuffer *intel_fb;
1888 struct drm_i915_gem_object *obj;
1889 int plane = intel_crtc->plane;
1890 unsigned long Start, Offset;
1900 DRM_ERROR("Can't update plane %d in SAREA\n", plane);
1904 intel_fb = to_intel_framebuffer(fb);
1905 obj = intel_fb->obj;
1907 reg = DSPCNTR(plane);
1908 dspcntr = I915_READ(reg);
1909 /* Mask out pixel format bits in case we change it */
1910 dspcntr &= ~DISPPLANE_PIXFORMAT_MASK;
1911 switch (fb->bits_per_pixel) {
1913 dspcntr |= DISPPLANE_8BPP;
1916 if (fb->depth != 16)
1919 dspcntr |= DISPPLANE_16BPP;
1923 if (fb->depth == 24)
1924 dspcntr |= DISPPLANE_32BPP_NO_ALPHA;
1925 else if (fb->depth == 30)
1926 dspcntr |= DISPPLANE_32BPP_30BIT_NO_ALPHA;
1931 DRM_ERROR("Unknown color depth %d\n", fb->bits_per_pixel);
1935 if (obj->tiling_mode != I915_TILING_NONE)
1936 dspcntr |= DISPPLANE_TILED;
1938 dspcntr &= ~DISPPLANE_TILED;
1941 dspcntr |= DISPPLANE_TRICKLE_FEED_DISABLE;
1943 I915_WRITE(reg, dspcntr);
1945 Start = obj->gtt_offset;
1946 Offset = y * fb->pitches[0] + x * (fb->bits_per_pixel / 8);
1948 DRM_DEBUG_KMS("Writing base %08lX %08lX %d %d %d\n",
1949 Start, Offset, x, y, fb->pitches[0]);
1950 I915_WRITE(DSPSTRIDE(plane), fb->pitches[0]);
1951 I915_MODIFY_DISPBASE(DSPSURF(plane), Start);
1952 I915_WRITE(DSPTILEOFF(plane), (y << 16) | x);
1953 I915_WRITE(DSPADDR(plane), Offset);
1959 /* Assume fb object is pinned & idle & fenced and just update base pointers */
1961 intel_pipe_set_base_atomic(struct drm_crtc *crtc, struct drm_framebuffer *fb,
1962 int x, int y, enum mode_set_atomic state)
1964 struct drm_device *dev = crtc->dev;
1965 struct drm_i915_private *dev_priv = dev->dev_private;
1967 if (dev_priv->display.disable_fbc)
1968 dev_priv->display.disable_fbc(dev);
1969 intel_increase_pllclock(crtc);
1971 return dev_priv->display.update_plane(crtc, fb, x, y);
1975 intel_finish_fb(struct drm_framebuffer *old_fb)
1977 struct drm_i915_gem_object *obj = to_intel_framebuffer(old_fb)->obj;
1978 struct drm_i915_private *dev_priv = obj->base.dev->dev_private;
1979 bool was_interruptible = dev_priv->mm.interruptible;
1982 wait_event(dev_priv->pending_flip_queue,
1983 atomic_read(&dev_priv->mm.wedged) ||
1984 atomic_read(&obj->pending_flip) == 0);
1986 /* Big Hammer, we also need to ensure that any pending
1987 * MI_WAIT_FOR_EVENT inside a user batch buffer on the
1988 * current scanout is retired before unpinning the old
1991 * This should only fail upon a hung GPU, in which case we
1992 * can safely continue.
1994 dev_priv->mm.interruptible = false;
1995 ret = i915_gem_object_finish_gpu(obj);
1996 dev_priv->mm.interruptible = was_interruptible;
2002 intel_pipe_set_base(struct drm_crtc *crtc, int x, int y,
2003 struct drm_framebuffer *old_fb)
2005 struct drm_device *dev = crtc->dev;
2006 struct drm_i915_private *dev_priv = dev->dev_private;
2007 struct drm_i915_master_private *master_priv;
2008 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2013 DRM_ERROR("No FB bound\n");
2017 if(intel_crtc->plane > dev_priv->num_pipe) {
2018 DRM_ERROR("no plane for crtc: plane %d, num_pipes %d\n",
2020 dev_priv->num_pipe);
2024 mutex_lock(&dev->struct_mutex);
2025 ret = intel_pin_and_fence_fb_obj(dev,
2026 to_intel_framebuffer(crtc->fb)->obj,
2029 mutex_unlock(&dev->struct_mutex);
2030 DRM_ERROR("pin & fence failed\n");
2035 intel_finish_fb(old_fb);
2037 ret = dev_priv->display.update_plane(crtc, crtc->fb, x, y);
2039 intel_unpin_fb_obj(to_intel_framebuffer(crtc->fb)->obj);
2040 mutex_unlock(&dev->struct_mutex);
2041 DRM_ERROR("failed to update base address\n");
2046 intel_wait_for_vblank(dev, intel_crtc->pipe);
2047 intel_unpin_fb_obj(to_intel_framebuffer(old_fb)->obj);
2050 intel_update_fbc(dev);
2051 mutex_unlock(&dev->struct_mutex);
2053 if (!dev->primary->master)
2056 master_priv = dev->primary->master->driver_priv;
2057 if (!master_priv->sarea_priv)
2060 if (intel_crtc->pipe) {
2061 master_priv->sarea_priv->pipeB_x = x;
2062 master_priv->sarea_priv->pipeB_y = y;
2064 master_priv->sarea_priv->pipeA_x = x;
2065 master_priv->sarea_priv->pipeA_y = y;
2071 static void ironlake_set_pll_edp(struct drm_crtc *crtc, int clock)
2073 struct drm_device *dev = crtc->dev;
2074 struct drm_i915_private *dev_priv = dev->dev_private;
2077 DRM_DEBUG_KMS("eDP PLL enable for clock %d\n", clock);
2078 dpa_ctl = I915_READ(DP_A);
2079 dpa_ctl &= ~DP_PLL_FREQ_MASK;
2081 if (clock < 200000) {
2083 dpa_ctl |= DP_PLL_FREQ_160MHZ;
2084 /* workaround for 160Mhz:
2085 1) program 0x4600c bits 15:0 = 0x8124
2086 2) program 0x46010 bit 0 = 1
2087 3) program 0x46034 bit 24 = 1
2088 4) program 0x64000 bit 14 = 1
2090 temp = I915_READ(0x4600c);
2092 I915_WRITE(0x4600c, temp | 0x8124);
2094 temp = I915_READ(0x46010);
2095 I915_WRITE(0x46010, temp | 1);
2097 temp = I915_READ(0x46034);
2098 I915_WRITE(0x46034, temp | (1 << 24));
2100 dpa_ctl |= DP_PLL_FREQ_270MHZ;
2102 I915_WRITE(DP_A, dpa_ctl);
2108 static void intel_fdi_normal_train(struct drm_crtc *crtc)
2110 struct drm_device *dev = crtc->dev;
2111 struct drm_i915_private *dev_priv = dev->dev_private;
2112 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2113 int pipe = intel_crtc->pipe;
2116 /* enable normal train */
2117 reg = FDI_TX_CTL(pipe);
2118 temp = I915_READ(reg);
2119 if (IS_IVYBRIDGE(dev)) {
2120 temp &= ~FDI_LINK_TRAIN_NONE_IVB;
2121 temp |= FDI_LINK_TRAIN_NONE_IVB | FDI_TX_ENHANCE_FRAME_ENABLE;
2123 temp &= ~FDI_LINK_TRAIN_NONE;
2124 temp |= FDI_LINK_TRAIN_NONE | FDI_TX_ENHANCE_FRAME_ENABLE;
2126 I915_WRITE(reg, temp);
2128 reg = FDI_RX_CTL(pipe);
2129 temp = I915_READ(reg);
2130 if (HAS_PCH_CPT(dev)) {
2131 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
2132 temp |= FDI_LINK_TRAIN_NORMAL_CPT;
2134 temp &= ~FDI_LINK_TRAIN_NONE;
2135 temp |= FDI_LINK_TRAIN_NONE;
2137 I915_WRITE(reg, temp | FDI_RX_ENHANCE_FRAME_ENABLE);
2139 /* wait one idle pattern time */
2143 /* IVB wants error correction enabled */
2144 if (IS_IVYBRIDGE(dev))
2145 I915_WRITE(reg, I915_READ(reg) | FDI_FS_ERRC_ENABLE |
2146 FDI_FE_ERRC_ENABLE);
2149 static void cpt_phase_pointer_enable(struct drm_device *dev, int pipe)
2151 struct drm_i915_private *dev_priv = dev->dev_private;
2152 u32 flags = I915_READ(SOUTH_CHICKEN1);
2154 flags |= FDI_PHASE_SYNC_OVR(pipe);
2155 I915_WRITE(SOUTH_CHICKEN1, flags); /* once to unlock... */
2156 flags |= FDI_PHASE_SYNC_EN(pipe);
2157 I915_WRITE(SOUTH_CHICKEN1, flags); /* then again to enable */
2158 POSTING_READ(SOUTH_CHICKEN1);
2161 /* The FDI link training functions for ILK/Ibexpeak. */
2162 static void ironlake_fdi_link_train(struct drm_crtc *crtc)
2164 struct drm_device *dev = crtc->dev;
2165 struct drm_i915_private *dev_priv = dev->dev_private;
2166 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2167 int pipe = intel_crtc->pipe;
2168 int plane = intel_crtc->plane;
2169 u32 reg, temp, tries;
2171 /* FDI needs bits from pipe & plane first */
2172 assert_pipe_enabled(dev_priv, pipe);
2173 assert_plane_enabled(dev_priv, plane);
2175 /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
2177 reg = FDI_RX_IMR(pipe);
2178 temp = I915_READ(reg);
2179 temp &= ~FDI_RX_SYMBOL_LOCK;
2180 temp &= ~FDI_RX_BIT_LOCK;
2181 I915_WRITE(reg, temp);
2185 /* enable CPU FDI TX and PCH FDI RX */
2186 reg = FDI_TX_CTL(pipe);
2187 temp = I915_READ(reg);
2189 temp |= (intel_crtc->fdi_lanes - 1) << 19;
2190 temp &= ~FDI_LINK_TRAIN_NONE;
2191 temp |= FDI_LINK_TRAIN_PATTERN_1;
2192 I915_WRITE(reg, temp | FDI_TX_ENABLE);
2194 reg = FDI_RX_CTL(pipe);
2195 temp = I915_READ(reg);
2196 temp &= ~FDI_LINK_TRAIN_NONE;
2197 temp |= FDI_LINK_TRAIN_PATTERN_1;
2198 I915_WRITE(reg, temp | FDI_RX_ENABLE);
2203 /* Ironlake workaround, enable clock pointer after FDI enable*/
2204 if (HAS_PCH_IBX(dev)) {
2205 I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR);
2206 I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR |
2207 FDI_RX_PHASE_SYNC_POINTER_EN);
2210 reg = FDI_RX_IIR(pipe);
2211 for (tries = 0; tries < 5; tries++) {
2212 temp = I915_READ(reg);
2213 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
2215 if ((temp & FDI_RX_BIT_LOCK)) {
2216 DRM_DEBUG_KMS("FDI train 1 done.\n");
2217 I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
2222 DRM_ERROR("FDI train 1 fail!\n");
2225 reg = FDI_TX_CTL(pipe);
2226 temp = I915_READ(reg);
2227 temp &= ~FDI_LINK_TRAIN_NONE;
2228 temp |= FDI_LINK_TRAIN_PATTERN_2;
2229 I915_WRITE(reg, temp);
2231 reg = FDI_RX_CTL(pipe);
2232 temp = I915_READ(reg);
2233 temp &= ~FDI_LINK_TRAIN_NONE;
2234 temp |= FDI_LINK_TRAIN_PATTERN_2;
2235 I915_WRITE(reg, temp);
2240 reg = FDI_RX_IIR(pipe);
2241 for (tries = 0; tries < 5; tries++) {
2242 temp = I915_READ(reg);
2243 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
2245 if (temp & FDI_RX_SYMBOL_LOCK) {
2246 I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
2247 DRM_DEBUG_KMS("FDI train 2 done.\n");
2252 DRM_ERROR("FDI train 2 fail!\n");
2254 DRM_DEBUG_KMS("FDI train done\n");
2258 static const int snb_b_fdi_train_param[] = {
2259 FDI_LINK_TRAIN_400MV_0DB_SNB_B,
2260 FDI_LINK_TRAIN_400MV_6DB_SNB_B,
2261 FDI_LINK_TRAIN_600MV_3_5DB_SNB_B,
2262 FDI_LINK_TRAIN_800MV_0DB_SNB_B,
2265 /* The FDI link training functions for SNB/Cougarpoint. */
2266 static void gen6_fdi_link_train(struct drm_crtc *crtc)
2268 struct drm_device *dev = crtc->dev;
2269 struct drm_i915_private *dev_priv = dev->dev_private;
2270 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2271 int pipe = intel_crtc->pipe;
2272 u32 reg, temp, i, retry;
2274 /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
2276 reg = FDI_RX_IMR(pipe);
2277 temp = I915_READ(reg);
2278 temp &= ~FDI_RX_SYMBOL_LOCK;
2279 temp &= ~FDI_RX_BIT_LOCK;
2280 I915_WRITE(reg, temp);
2285 /* enable CPU FDI TX and PCH FDI RX */
2286 reg = FDI_TX_CTL(pipe);
2287 temp = I915_READ(reg);
2289 temp |= (intel_crtc->fdi_lanes - 1) << 19;
2290 temp &= ~FDI_LINK_TRAIN_NONE;
2291 temp |= FDI_LINK_TRAIN_PATTERN_1;
2292 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2294 temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
2295 I915_WRITE(reg, temp | FDI_TX_ENABLE);
2297 reg = FDI_RX_CTL(pipe);
2298 temp = I915_READ(reg);
2299 if (HAS_PCH_CPT(dev)) {
2300 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
2301 temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
2303 temp &= ~FDI_LINK_TRAIN_NONE;
2304 temp |= FDI_LINK_TRAIN_PATTERN_1;
2306 I915_WRITE(reg, temp | FDI_RX_ENABLE);
2311 if (HAS_PCH_CPT(dev))
2312 cpt_phase_pointer_enable(dev, pipe);
2314 for (i = 0; i < 4; i++) {
2315 reg = FDI_TX_CTL(pipe);
2316 temp = I915_READ(reg);
2317 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2318 temp |= snb_b_fdi_train_param[i];
2319 I915_WRITE(reg, temp);
2324 for (retry = 0; retry < 5; retry++) {
2325 reg = FDI_RX_IIR(pipe);
2326 temp = I915_READ(reg);
2327 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
2328 if (temp & FDI_RX_BIT_LOCK) {
2329 I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
2330 DRM_DEBUG_KMS("FDI train 1 done.\n");
2339 DRM_ERROR("FDI train 1 fail!\n");
2342 reg = FDI_TX_CTL(pipe);
2343 temp = I915_READ(reg);
2344 temp &= ~FDI_LINK_TRAIN_NONE;
2345 temp |= FDI_LINK_TRAIN_PATTERN_2;
2347 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2349 temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
2351 I915_WRITE(reg, temp);
2353 reg = FDI_RX_CTL(pipe);
2354 temp = I915_READ(reg);
2355 if (HAS_PCH_CPT(dev)) {
2356 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
2357 temp |= FDI_LINK_TRAIN_PATTERN_2_CPT;
2359 temp &= ~FDI_LINK_TRAIN_NONE;
2360 temp |= FDI_LINK_TRAIN_PATTERN_2;
2362 I915_WRITE(reg, temp);
2367 for (i = 0; i < 4; i++) {
2368 reg = FDI_TX_CTL(pipe);
2369 temp = I915_READ(reg);
2370 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2371 temp |= snb_b_fdi_train_param[i];
2372 I915_WRITE(reg, temp);
2377 for (retry = 0; retry < 5; retry++) {
2378 reg = FDI_RX_IIR(pipe);
2379 temp = I915_READ(reg);
2380 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
2381 if (temp & FDI_RX_SYMBOL_LOCK) {
2382 I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
2383 DRM_DEBUG_KMS("FDI train 2 done.\n");
2392 DRM_ERROR("FDI train 2 fail!\n");
2394 DRM_DEBUG_KMS("FDI train done.\n");
2397 /* Manual link training for Ivy Bridge A0 parts */
2398 static void ivb_manual_fdi_link_train(struct drm_crtc *crtc)
2400 struct drm_device *dev = crtc->dev;
2401 struct drm_i915_private *dev_priv = dev->dev_private;
2402 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2403 int pipe = intel_crtc->pipe;
2406 /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
2408 reg = FDI_RX_IMR(pipe);
2409 temp = I915_READ(reg);
2410 temp &= ~FDI_RX_SYMBOL_LOCK;
2411 temp &= ~FDI_RX_BIT_LOCK;
2412 I915_WRITE(reg, temp);
2417 /* enable CPU FDI TX and PCH FDI RX */
2418 reg = FDI_TX_CTL(pipe);
2419 temp = I915_READ(reg);
2421 temp |= (intel_crtc->fdi_lanes - 1) << 19;
2422 temp &= ~(FDI_LINK_TRAIN_AUTO | FDI_LINK_TRAIN_NONE_IVB);
2423 temp |= FDI_LINK_TRAIN_PATTERN_1_IVB;
2424 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2425 temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
2426 temp |= FDI_COMPOSITE_SYNC;
2427 I915_WRITE(reg, temp | FDI_TX_ENABLE);
2429 reg = FDI_RX_CTL(pipe);
2430 temp = I915_READ(reg);
2431 temp &= ~FDI_LINK_TRAIN_AUTO;
2432 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
2433 temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
2434 temp |= FDI_COMPOSITE_SYNC;
2435 I915_WRITE(reg, temp | FDI_RX_ENABLE);
2440 if (HAS_PCH_CPT(dev))
2441 cpt_phase_pointer_enable(dev, pipe);
2443 for (i = 0; i < 4; i++) {
2444 reg = FDI_TX_CTL(pipe);
2445 temp = I915_READ(reg);
2446 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2447 temp |= snb_b_fdi_train_param[i];
2448 I915_WRITE(reg, temp);
2453 reg = FDI_RX_IIR(pipe);
2454 temp = I915_READ(reg);
2455 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
2457 if (temp & FDI_RX_BIT_LOCK ||
2458 (I915_READ(reg) & FDI_RX_BIT_LOCK)) {
2459 I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
2460 DRM_DEBUG_KMS("FDI train 1 done.\n");
2465 DRM_ERROR("FDI train 1 fail!\n");
2468 reg = FDI_TX_CTL(pipe);
2469 temp = I915_READ(reg);
2470 temp &= ~FDI_LINK_TRAIN_NONE_IVB;
2471 temp |= FDI_LINK_TRAIN_PATTERN_2_IVB;
2472 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2473 temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
2474 I915_WRITE(reg, temp);
2476 reg = FDI_RX_CTL(pipe);
2477 temp = I915_READ(reg);
2478 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
2479 temp |= FDI_LINK_TRAIN_PATTERN_2_CPT;
2480 I915_WRITE(reg, temp);
2485 for (i = 0; i < 4; i++) {
2486 reg = FDI_TX_CTL(pipe);
2487 temp = I915_READ(reg);
2488 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2489 temp |= snb_b_fdi_train_param[i];
2490 I915_WRITE(reg, temp);
2495 reg = FDI_RX_IIR(pipe);
2496 temp = I915_READ(reg);
2497 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
2499 if (temp & FDI_RX_SYMBOL_LOCK) {
2500 I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
2501 DRM_DEBUG_KMS("FDI train 2 done.\n");
2506 DRM_ERROR("FDI train 2 fail!\n");
2508 DRM_DEBUG_KMS("FDI train done.\n");
2511 static void ironlake_fdi_pll_enable(struct drm_crtc *crtc)
2513 struct drm_device *dev = crtc->dev;
2514 struct drm_i915_private *dev_priv = dev->dev_private;
2515 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2516 int pipe = intel_crtc->pipe;
2519 /* Write the TU size bits so error detection works */
2520 I915_WRITE(FDI_RX_TUSIZE1(pipe),
2521 I915_READ(PIPE_DATA_M1(pipe)) & TU_SIZE_MASK);
2523 /* enable PCH FDI RX PLL, wait warmup plus DMI latency */
2524 reg = FDI_RX_CTL(pipe);
2525 temp = I915_READ(reg);
2526 temp &= ~((0x7 << 19) | (0x7 << 16));
2527 temp |= (intel_crtc->fdi_lanes - 1) << 19;
2528 temp |= (I915_READ(PIPECONF(pipe)) & PIPE_BPC_MASK) << 11;
2529 I915_WRITE(reg, temp | FDI_RX_PLL_ENABLE);
2534 /* Switch from Rawclk to PCDclk */
2535 temp = I915_READ(reg);
2536 I915_WRITE(reg, temp | FDI_PCDCLK);
2541 /* On Haswell, the PLL configuration for ports and pipes is handled
2542 * separately, as part of DDI setup */
2543 if (!IS_HASWELL(dev)) {
2544 /* Enable CPU FDI TX PLL, always on for Ironlake */
2545 reg = FDI_TX_CTL(pipe);
2546 temp = I915_READ(reg);
2547 if ((temp & FDI_TX_PLL_ENABLE) == 0) {
2548 I915_WRITE(reg, temp | FDI_TX_PLL_ENABLE);
2556 static void cpt_phase_pointer_disable(struct drm_device *dev, int pipe)
2558 struct drm_i915_private *dev_priv = dev->dev_private;
2559 u32 flags = I915_READ(SOUTH_CHICKEN1);
2561 flags &= ~(FDI_PHASE_SYNC_EN(pipe));
2562 I915_WRITE(SOUTH_CHICKEN1, flags); /* once to disable... */
2563 flags &= ~(FDI_PHASE_SYNC_OVR(pipe));
2564 I915_WRITE(SOUTH_CHICKEN1, flags); /* then again to lock */
2565 POSTING_READ(SOUTH_CHICKEN1);
2567 static void ironlake_fdi_disable(struct drm_crtc *crtc)
2569 struct drm_device *dev = crtc->dev;
2570 struct drm_i915_private *dev_priv = dev->dev_private;
2571 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2572 int pipe = intel_crtc->pipe;
2575 /* disable CPU FDI tx and PCH FDI rx */
2576 reg = FDI_TX_CTL(pipe);
2577 temp = I915_READ(reg);
2578 I915_WRITE(reg, temp & ~FDI_TX_ENABLE);
2581 reg = FDI_RX_CTL(pipe);
2582 temp = I915_READ(reg);
2583 temp &= ~(0x7 << 16);
2584 temp |= (I915_READ(PIPECONF(pipe)) & PIPE_BPC_MASK) << 11;
2585 I915_WRITE(reg, temp & ~FDI_RX_ENABLE);
2590 /* Ironlake workaround, disable clock pointer after downing FDI */
2591 if (HAS_PCH_IBX(dev)) {
2592 I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR);
2593 I915_WRITE(FDI_RX_CHICKEN(pipe),
2594 I915_READ(FDI_RX_CHICKEN(pipe) &
2595 ~FDI_RX_PHASE_SYNC_POINTER_EN));
2596 } else if (HAS_PCH_CPT(dev)) {
2597 cpt_phase_pointer_disable(dev, pipe);
2600 /* still set train pattern 1 */
2601 reg = FDI_TX_CTL(pipe);
2602 temp = I915_READ(reg);
2603 temp &= ~FDI_LINK_TRAIN_NONE;
2604 temp |= FDI_LINK_TRAIN_PATTERN_1;
2605 I915_WRITE(reg, temp);
2607 reg = FDI_RX_CTL(pipe);
2608 temp = I915_READ(reg);
2609 if (HAS_PCH_CPT(dev)) {
2610 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
2611 temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
2613 temp &= ~FDI_LINK_TRAIN_NONE;
2614 temp |= FDI_LINK_TRAIN_PATTERN_1;
2616 /* BPC in FDI rx is consistent with that in PIPECONF */
2617 temp &= ~(0x07 << 16);
2618 temp |= (I915_READ(PIPECONF(pipe)) & PIPE_BPC_MASK) << 11;
2619 I915_WRITE(reg, temp);
2625 static void intel_crtc_wait_for_pending_flips(struct drm_crtc *crtc)
2627 struct drm_device *dev = crtc->dev;
2629 if (crtc->fb == NULL)
2632 mutex_lock(&dev->struct_mutex);
2633 intel_finish_fb(crtc->fb);
2634 mutex_unlock(&dev->struct_mutex);
2637 static bool intel_crtc_driving_pch(struct drm_crtc *crtc)
2639 struct drm_device *dev = crtc->dev;
2640 struct drm_mode_config *mode_config = &dev->mode_config;
2641 struct intel_encoder *encoder;
2644 * If there's a non-PCH eDP on this crtc, it must be DP_A, and that
2645 * must be driven by its own crtc; no sharing is possible.
2647 list_for_each_entry(encoder, &mode_config->encoder_list, base.head) {
2648 if (encoder->base.crtc != crtc)
2651 /* On Haswell, LPT PCH handles the VGA connection via FDI, and Haswell
2652 * CPU handles all others */
2653 if (IS_HASWELL(dev)) {
2654 /* It is still unclear how this will work on PPT, so throw up a warning */
2655 WARN_ON(!HAS_PCH_LPT(dev));
2657 if (encoder->type == DRM_MODE_ENCODER_DAC) {
2658 DRM_DEBUG_KMS("Haswell detected DAC encoder, assuming is PCH\n");
2661 DRM_DEBUG_KMS("Haswell detected encoder %d, assuming is CPU\n",
2667 switch (encoder->type) {
2668 case INTEL_OUTPUT_EDP:
2669 if (!intel_encoder_is_pch_edp(&encoder->base))
2678 /* Program iCLKIP clock to the desired frequency */
2679 static void lpt_program_iclkip(struct drm_crtc *crtc)
2681 struct drm_device *dev = crtc->dev;
2682 struct drm_i915_private *dev_priv = dev->dev_private;
2683 u32 divsel, phaseinc, auxdiv, phasedir = 0;
2686 /* It is necessary to ungate the pixclk gate prior to programming
2687 * the divisors, and gate it back when it is done.
2689 I915_WRITE(PIXCLK_GATE, PIXCLK_GATE_GATE);
2691 /* Disable SSCCTL */
2692 intel_sbi_write(dev_priv, SBI_SSCCTL6,
2693 intel_sbi_read(dev_priv, SBI_SSCCTL6) |
2694 SBI_SSCCTL_DISABLE);
2696 /* 20MHz is a corner case which is out of range for the 7-bit divisor */
2697 if (crtc->mode.clock == 20000) {
2702 /* The iCLK virtual clock root frequency is in MHz,
2703 * but the crtc->mode.clock in in KHz. To get the divisors,
2704 * it is necessary to divide one by another, so we
2705 * convert the virtual clock precision to KHz here for higher
2708 u32 iclk_virtual_root_freq = 172800 * 1000;
2709 u32 iclk_pi_range = 64;
2710 u32 desired_divisor, msb_divisor_value, pi_value;
2712 desired_divisor = (iclk_virtual_root_freq / crtc->mode.clock);
2713 msb_divisor_value = desired_divisor / iclk_pi_range;
2714 pi_value = desired_divisor % iclk_pi_range;
2717 divsel = msb_divisor_value - 2;
2718 phaseinc = pi_value;
2721 /* This should not happen with any sane values */
2722 WARN_ON(SBI_SSCDIVINTPHASE_DIVSEL(divsel) &
2723 ~SBI_SSCDIVINTPHASE_DIVSEL_MASK);
2724 WARN_ON(SBI_SSCDIVINTPHASE_DIR(phasedir) &
2725 ~SBI_SSCDIVINTPHASE_INCVAL_MASK);
2727 DRM_DEBUG_KMS("iCLKIP clock: found settings for %dKHz refresh rate: auxdiv=%x, divsel=%x, phasedir=%x, phaseinc=%x\n",
2734 /* Program SSCDIVINTPHASE6 */
2735 temp = intel_sbi_read(dev_priv, SBI_SSCDIVINTPHASE6);
2736 temp &= ~SBI_SSCDIVINTPHASE_DIVSEL_MASK;
2737 temp |= SBI_SSCDIVINTPHASE_DIVSEL(divsel);
2738 temp &= ~SBI_SSCDIVINTPHASE_INCVAL_MASK;
2739 temp |= SBI_SSCDIVINTPHASE_INCVAL(phaseinc);
2740 temp |= SBI_SSCDIVINTPHASE_DIR(phasedir);
2741 temp |= SBI_SSCDIVINTPHASE_PROPAGATE;
2743 intel_sbi_write(dev_priv,
2744 SBI_SSCDIVINTPHASE6,
2747 /* Program SSCAUXDIV */
2748 temp = intel_sbi_read(dev_priv, SBI_SSCAUXDIV6);
2749 temp &= ~SBI_SSCAUXDIV_FINALDIV2SEL(1);
2750 temp |= SBI_SSCAUXDIV_FINALDIV2SEL(auxdiv);
2751 intel_sbi_write(dev_priv,
2756 /* Enable modulator and associated divider */
2757 temp = intel_sbi_read(dev_priv, SBI_SSCCTL6);
2758 temp &= ~SBI_SSCCTL_DISABLE;
2759 intel_sbi_write(dev_priv,
2763 /* Wait for initialization time */
2766 I915_WRITE(PIXCLK_GATE, PIXCLK_GATE_UNGATE);
2770 * Enable PCH resources required for PCH ports:
2772 * - FDI training & RX/TX
2773 * - update transcoder timings
2774 * - DP transcoding bits
2777 static void ironlake_pch_enable(struct drm_crtc *crtc)
2779 struct drm_device *dev = crtc->dev;
2780 struct drm_i915_private *dev_priv = dev->dev_private;
2781 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2782 int pipe = intel_crtc->pipe;
2785 assert_transcoder_disabled(dev_priv, pipe);
2787 /* For PCH output, training FDI link */
2788 dev_priv->display.fdi_link_train(crtc);
2790 if (HAS_PCH_LPT(dev)) {
2791 DRM_DEBUG_KMS("LPT detected: programming iCLKIP\n");
2792 lpt_program_iclkip(crtc);
2793 } else if (HAS_PCH_CPT(dev)) {
2796 intel_enable_pch_pll(intel_crtc);
2798 temp = I915_READ(PCH_DPLL_SEL);
2802 temp |= TRANSA_DPLL_ENABLE;
2803 sel = TRANSA_DPLLB_SEL;
2806 temp |= TRANSB_DPLL_ENABLE;
2807 sel = TRANSB_DPLLB_SEL;
2810 temp |= TRANSC_DPLL_ENABLE;
2811 sel = TRANSC_DPLLB_SEL;
2814 if (intel_crtc->pch_pll->pll_reg == _PCH_DPLL_B)
2818 I915_WRITE(PCH_DPLL_SEL, temp);
2821 /* set transcoder timing, panel must allow it */
2822 assert_panel_unlocked(dev_priv, pipe);
2823 I915_WRITE(TRANS_HTOTAL(pipe), I915_READ(HTOTAL(pipe)));
2824 I915_WRITE(TRANS_HBLANK(pipe), I915_READ(HBLANK(pipe)));
2825 I915_WRITE(TRANS_HSYNC(pipe), I915_READ(HSYNC(pipe)));
2827 I915_WRITE(TRANS_VTOTAL(pipe), I915_READ(VTOTAL(pipe)));
2828 I915_WRITE(TRANS_VBLANK(pipe), I915_READ(VBLANK(pipe)));
2829 I915_WRITE(TRANS_VSYNC(pipe), I915_READ(VSYNC(pipe)));
2830 I915_WRITE(TRANS_VSYNCSHIFT(pipe), I915_READ(VSYNCSHIFT(pipe)));
2832 if (!IS_HASWELL(dev))
2833 intel_fdi_normal_train(crtc);
2835 /* For PCH DP, enable TRANS_DP_CTL */
2836 if (HAS_PCH_CPT(dev) &&
2837 (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT) ||
2838 intel_pipe_has_type(crtc, INTEL_OUTPUT_EDP))) {
2839 u32 bpc = (I915_READ(PIPECONF(pipe)) & PIPE_BPC_MASK) >> 5;
2840 reg = TRANS_DP_CTL(pipe);
2841 temp = I915_READ(reg);
2842 temp &= ~(TRANS_DP_PORT_SEL_MASK |
2843 TRANS_DP_SYNC_MASK |
2845 temp |= (TRANS_DP_OUTPUT_ENABLE |
2846 TRANS_DP_ENH_FRAMING);
2847 temp |= bpc << 9; /* same format but at 11:9 */
2849 if (crtc->mode.flags & DRM_MODE_FLAG_PHSYNC)
2850 temp |= TRANS_DP_HSYNC_ACTIVE_HIGH;
2851 if (crtc->mode.flags & DRM_MODE_FLAG_PVSYNC)
2852 temp |= TRANS_DP_VSYNC_ACTIVE_HIGH;
2854 switch (intel_trans_dp_port_sel(crtc)) {
2856 temp |= TRANS_DP_PORT_SEL_B;
2859 temp |= TRANS_DP_PORT_SEL_C;
2862 temp |= TRANS_DP_PORT_SEL_D;
2865 DRM_DEBUG_KMS("Wrong PCH DP port return. Guess port B\n");
2866 temp |= TRANS_DP_PORT_SEL_B;
2870 I915_WRITE(reg, temp);
2873 intel_enable_transcoder(dev_priv, pipe);
2876 static void intel_put_pch_pll(struct intel_crtc *intel_crtc)
2878 struct intel_pch_pll *pll = intel_crtc->pch_pll;
2883 if (pll->refcount == 0) {
2884 WARN(1, "bad PCH PLL refcount\n");
2889 intel_crtc->pch_pll = NULL;
2892 static struct intel_pch_pll *intel_get_pch_pll(struct intel_crtc *intel_crtc, u32 dpll, u32 fp)
2894 struct drm_i915_private *dev_priv = intel_crtc->base.dev->dev_private;
2895 struct intel_pch_pll *pll;
2898 pll = intel_crtc->pch_pll;
2900 DRM_DEBUG_KMS("CRTC:%d reusing existing PCH PLL %x\n",
2901 intel_crtc->base.base.id, pll->pll_reg);
2905 for (i = 0; i < dev_priv->num_pch_pll; i++) {
2906 pll = &dev_priv->pch_plls[i];
2908 /* Only want to check enabled timings first */
2909 if (pll->refcount == 0)
2912 if (dpll == (I915_READ(pll->pll_reg) & 0x7fffffff) &&
2913 fp == I915_READ(pll->fp0_reg)) {
2914 DRM_DEBUG_KMS("CRTC:%d sharing existing PCH PLL %x (refcount %d, ative %d)\n",
2915 intel_crtc->base.base.id,
2916 pll->pll_reg, pll->refcount, pll->active);
2922 /* Ok no matching timings, maybe there's a free one? */
2923 for (i = 0; i < dev_priv->num_pch_pll; i++) {
2924 pll = &dev_priv->pch_plls[i];
2925 if (pll->refcount == 0) {
2926 DRM_DEBUG_KMS("CRTC:%d allocated PCH PLL %x\n",
2927 intel_crtc->base.base.id, pll->pll_reg);
2935 intel_crtc->pch_pll = pll;
2937 DRM_DEBUG_DRIVER("using pll %d for pipe %d\n", i, intel_crtc->pipe);
2938 prepare: /* separate function? */
2939 DRM_DEBUG_DRIVER("switching PLL %x off\n", pll->pll_reg);
2941 /* Wait for the clocks to stabilize before rewriting the regs */
2942 I915_WRITE(pll->pll_reg, dpll & ~DPLL_VCO_ENABLE);
2943 POSTING_READ(pll->pll_reg);
2946 I915_WRITE(pll->fp0_reg, fp);
2947 I915_WRITE(pll->pll_reg, dpll & ~DPLL_VCO_ENABLE);
2952 void intel_cpt_verify_modeset(struct drm_device *dev, int pipe)
2954 struct drm_i915_private *dev_priv = dev->dev_private;
2955 int dslreg = PIPEDSL(pipe), tc2reg = TRANS_CHICKEN2(pipe);
2958 temp = I915_READ(dslreg);
2960 if (wait_for(I915_READ(dslreg) != temp, 5)) {
2961 /* Without this, mode sets may fail silently on FDI */
2962 I915_WRITE(tc2reg, TRANS_AUTOTRAIN_GEN_STALL_DIS);
2964 I915_WRITE(tc2reg, 0);
2965 if (wait_for(I915_READ(dslreg) != temp, 5))
2966 DRM_ERROR("mode set failed: pipe %d stuck\n", pipe);
2970 static void ironlake_crtc_enable(struct drm_crtc *crtc)
2972 struct drm_device *dev = crtc->dev;
2973 struct drm_i915_private *dev_priv = dev->dev_private;
2974 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2975 int pipe = intel_crtc->pipe;
2976 int plane = intel_crtc->plane;
2980 if (intel_crtc->active)
2983 intel_crtc->active = true;
2984 intel_update_watermarks(dev);
2986 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
2987 temp = I915_READ(PCH_LVDS);
2988 if ((temp & LVDS_PORT_EN) == 0)
2989 I915_WRITE(PCH_LVDS, temp | LVDS_PORT_EN);
2992 is_pch_port = intel_crtc_driving_pch(crtc);
2995 ironlake_fdi_pll_enable(crtc);
2997 ironlake_fdi_disable(crtc);
2999 /* Enable panel fitting for LVDS */
3000 if (dev_priv->pch_pf_size &&
3001 (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) || HAS_eDP)) {
3002 /* Force use of hard-coded filter coefficients
3003 * as some pre-programmed values are broken,
3006 I915_WRITE(PF_CTL(pipe), PF_ENABLE | PF_FILTER_MED_3x3);
3007 I915_WRITE(PF_WIN_POS(pipe), dev_priv->pch_pf_pos);
3008 I915_WRITE(PF_WIN_SZ(pipe), dev_priv->pch_pf_size);
3012 * On ILK+ LUT must be loaded before the pipe is running but with
3015 intel_crtc_load_lut(crtc);
3017 intel_enable_pipe(dev_priv, pipe, is_pch_port);
3018 intel_enable_plane(dev_priv, plane, pipe);
3021 ironlake_pch_enable(crtc);
3023 mutex_lock(&dev->struct_mutex);
3024 intel_update_fbc(dev);
3025 mutex_unlock(&dev->struct_mutex);
3027 intel_crtc_update_cursor(crtc, true);
3030 static void ironlake_crtc_disable(struct drm_crtc *crtc)
3032 struct drm_device *dev = crtc->dev;
3033 struct drm_i915_private *dev_priv = dev->dev_private;
3034 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3035 int pipe = intel_crtc->pipe;
3036 int plane = intel_crtc->plane;
3039 if (!intel_crtc->active)
3042 intel_crtc_wait_for_pending_flips(crtc);
3043 drm_vblank_off(dev, pipe);
3044 intel_crtc_update_cursor(crtc, false);
3046 intel_disable_plane(dev_priv, plane, pipe);
3048 if (dev_priv->cfb_plane == plane)
3049 intel_disable_fbc(dev);
3051 intel_disable_pipe(dev_priv, pipe);
3054 I915_WRITE(PF_CTL(pipe), 0);
3055 I915_WRITE(PF_WIN_SZ(pipe), 0);
3057 ironlake_fdi_disable(crtc);
3059 /* This is a horrible layering violation; we should be doing this in
3060 * the connector/encoder ->prepare instead, but we don't always have
3061 * enough information there about the config to know whether it will
3062 * actually be necessary or just cause undesired flicker.
3064 intel_disable_pch_ports(dev_priv, pipe);
3066 intel_disable_transcoder(dev_priv, pipe);
3068 if (HAS_PCH_CPT(dev)) {
3069 /* disable TRANS_DP_CTL */
3070 reg = TRANS_DP_CTL(pipe);
3071 temp = I915_READ(reg);
3072 temp &= ~(TRANS_DP_OUTPUT_ENABLE | TRANS_DP_PORT_SEL_MASK);
3073 temp |= TRANS_DP_PORT_SEL_NONE;
3074 I915_WRITE(reg, temp);
3076 /* disable DPLL_SEL */
3077 temp = I915_READ(PCH_DPLL_SEL);
3080 temp &= ~(TRANSA_DPLL_ENABLE | TRANSA_DPLLB_SEL);
3083 temp &= ~(TRANSB_DPLL_ENABLE | TRANSB_DPLLB_SEL);
3086 /* C shares PLL A or B */
3087 temp &= ~(TRANSC_DPLL_ENABLE | TRANSC_DPLLB_SEL);
3092 I915_WRITE(PCH_DPLL_SEL, temp);
3095 /* disable PCH DPLL */
3096 intel_disable_pch_pll(intel_crtc);
3098 /* Switch from PCDclk to Rawclk */
3099 reg = FDI_RX_CTL(pipe);
3100 temp = I915_READ(reg);
3101 I915_WRITE(reg, temp & ~FDI_PCDCLK);
3103 /* Disable CPU FDI TX PLL */
3104 reg = FDI_TX_CTL(pipe);
3105 temp = I915_READ(reg);
3106 I915_WRITE(reg, temp & ~FDI_TX_PLL_ENABLE);
3111 reg = FDI_RX_CTL(pipe);
3112 temp = I915_READ(reg);
3113 I915_WRITE(reg, temp & ~FDI_RX_PLL_ENABLE);
3115 /* Wait for the clocks to turn off. */
3119 intel_crtc->active = false;
3120 intel_update_watermarks(dev);
3122 mutex_lock(&dev->struct_mutex);
3123 intel_update_fbc(dev);
3124 mutex_unlock(&dev->struct_mutex);
3127 static void ironlake_crtc_dpms(struct drm_crtc *crtc, int mode)
3129 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3130 int pipe = intel_crtc->pipe;
3131 int plane = intel_crtc->plane;
3133 /* XXX: When our outputs are all unaware of DPMS modes other than off
3134 * and on, we should map those modes to DRM_MODE_DPMS_OFF in the CRTC.
3137 case DRM_MODE_DPMS_ON:
3138 case DRM_MODE_DPMS_STANDBY:
3139 case DRM_MODE_DPMS_SUSPEND:
3140 DRM_DEBUG_KMS("crtc %d/%d dpms on\n", pipe, plane);
3141 ironlake_crtc_enable(crtc);
3144 case DRM_MODE_DPMS_OFF:
3145 DRM_DEBUG_KMS("crtc %d/%d dpms off\n", pipe, plane);
3146 ironlake_crtc_disable(crtc);
3151 static void ironlake_crtc_off(struct drm_crtc *crtc)
3153 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3154 intel_put_pch_pll(intel_crtc);
3157 static void intel_crtc_dpms_overlay(struct intel_crtc *intel_crtc, bool enable)
3159 if (!enable && intel_crtc->overlay) {
3160 struct drm_device *dev = intel_crtc->base.dev;
3161 struct drm_i915_private *dev_priv = dev->dev_private;
3163 mutex_lock(&dev->struct_mutex);
3164 dev_priv->mm.interruptible = false;
3165 (void) intel_overlay_switch_off(intel_crtc->overlay);
3166 dev_priv->mm.interruptible = true;
3167 mutex_unlock(&dev->struct_mutex);
3170 /* Let userspace switch the overlay on again. In most cases userspace
3171 * has to recompute where to put it anyway.
3175 static void i9xx_crtc_enable(struct drm_crtc *crtc)
3177 struct drm_device *dev = crtc->dev;
3178 struct drm_i915_private *dev_priv = dev->dev_private;
3179 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3180 int pipe = intel_crtc->pipe;
3181 int plane = intel_crtc->plane;
3183 if (intel_crtc->active)
3186 intel_crtc->active = true;
3187 intel_update_watermarks(dev);
3189 intel_enable_pll(dev_priv, pipe);
3190 intel_enable_pipe(dev_priv, pipe, false);
3191 intel_enable_plane(dev_priv, plane, pipe);
3193 intel_crtc_load_lut(crtc);
3194 intel_update_fbc(dev);
3196 /* Give the overlay scaler a chance to enable if it's on this pipe */
3197 intel_crtc_dpms_overlay(intel_crtc, true);
3198 intel_crtc_update_cursor(crtc, true);
3201 static void i9xx_crtc_disable(struct drm_crtc *crtc)
3203 struct drm_device *dev = crtc->dev;
3204 struct drm_i915_private *dev_priv = dev->dev_private;
3205 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3206 int pipe = intel_crtc->pipe;
3207 int plane = intel_crtc->plane;
3209 if (!intel_crtc->active)
3212 /* Give the overlay scaler a chance to disable if it's on this pipe */
3213 intel_crtc_wait_for_pending_flips(crtc);
3214 drm_vblank_off(dev, pipe);
3215 intel_crtc_dpms_overlay(intel_crtc, false);
3216 intel_crtc_update_cursor(crtc, false);
3218 if (dev_priv->cfb_plane == plane)
3219 intel_disable_fbc(dev);
3221 intel_disable_plane(dev_priv, plane, pipe);
3222 intel_disable_pipe(dev_priv, pipe);
3223 intel_disable_pll(dev_priv, pipe);
3225 intel_crtc->active = false;
3226 intel_update_fbc(dev);
3227 intel_update_watermarks(dev);
3230 static void i9xx_crtc_dpms(struct drm_crtc *crtc, int mode)
3232 /* XXX: When our outputs are all unaware of DPMS modes other than off
3233 * and on, we should map those modes to DRM_MODE_DPMS_OFF in the CRTC.
3236 case DRM_MODE_DPMS_ON:
3237 case DRM_MODE_DPMS_STANDBY:
3238 case DRM_MODE_DPMS_SUSPEND:
3239 i9xx_crtc_enable(crtc);
3241 case DRM_MODE_DPMS_OFF:
3242 i9xx_crtc_disable(crtc);
3247 static void i9xx_crtc_off(struct drm_crtc *crtc)
3252 * Sets the power management mode of the pipe and plane.
3254 static void intel_crtc_dpms(struct drm_crtc *crtc, int mode)
3256 struct drm_device *dev = crtc->dev;
3257 struct drm_i915_private *dev_priv = dev->dev_private;
3258 struct drm_i915_master_private *master_priv;
3259 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3260 int pipe = intel_crtc->pipe;
3263 if (intel_crtc->dpms_mode == mode)
3266 intel_crtc->dpms_mode = mode;
3268 dev_priv->display.dpms(crtc, mode);
3270 if (!dev->primary->master)
3273 master_priv = dev->primary->master->driver_priv;
3274 if (!master_priv->sarea_priv)
3277 enabled = crtc->enabled && mode != DRM_MODE_DPMS_OFF;
3281 master_priv->sarea_priv->pipeA_w = enabled ? crtc->mode.hdisplay : 0;
3282 master_priv->sarea_priv->pipeA_h = enabled ? crtc->mode.vdisplay : 0;
3285 master_priv->sarea_priv->pipeB_w = enabled ? crtc->mode.hdisplay : 0;
3286 master_priv->sarea_priv->pipeB_h = enabled ? crtc->mode.vdisplay : 0;
3289 DRM_ERROR("Can't update pipe %c in SAREA\n", pipe_name(pipe));
3294 static void intel_crtc_disable(struct drm_crtc *crtc)
3296 struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
3297 struct drm_device *dev = crtc->dev;
3298 struct drm_i915_private *dev_priv = dev->dev_private;
3300 crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF);
3301 dev_priv->display.off(crtc);
3303 assert_plane_disabled(dev->dev_private, to_intel_crtc(crtc)->plane);
3304 assert_pipe_disabled(dev->dev_private, to_intel_crtc(crtc)->pipe);
3307 mutex_lock(&dev->struct_mutex);
3308 intel_unpin_fb_obj(to_intel_framebuffer(crtc->fb)->obj);
3309 mutex_unlock(&dev->struct_mutex);
3313 /* Prepare for a mode set.
3315 * Note we could be a lot smarter here. We need to figure out which outputs
3316 * will be enabled, which disabled (in short, how the config will changes)
3317 * and perform the minimum necessary steps to accomplish that, e.g. updating
3318 * watermarks, FBC configuration, making sure PLLs are programmed correctly,
3319 * panel fitting is in the proper state, etc.
3321 static void i9xx_crtc_prepare(struct drm_crtc *crtc)
3323 i9xx_crtc_disable(crtc);
3326 static void i9xx_crtc_commit(struct drm_crtc *crtc)
3328 i9xx_crtc_enable(crtc);
3331 static void ironlake_crtc_prepare(struct drm_crtc *crtc)
3333 ironlake_crtc_disable(crtc);
3336 static void ironlake_crtc_commit(struct drm_crtc *crtc)
3338 ironlake_crtc_enable(crtc);
3341 void intel_encoder_prepare(struct drm_encoder *encoder)
3343 struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
3344 /* lvds has its own version of prepare see intel_lvds_prepare */
3345 encoder_funcs->dpms(encoder, DRM_MODE_DPMS_OFF);
3348 void intel_encoder_commit(struct drm_encoder *encoder)
3350 struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
3351 struct drm_device *dev = encoder->dev;
3352 struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
3354 /* lvds has its own version of commit see intel_lvds_commit */
3355 encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON);
3357 if (HAS_PCH_CPT(dev))
3358 intel_cpt_verify_modeset(dev, intel_crtc->pipe);
3361 void intel_encoder_destroy(struct drm_encoder *encoder)
3363 struct intel_encoder *intel_encoder = to_intel_encoder(encoder);
3365 drm_encoder_cleanup(encoder);
3366 kfree(intel_encoder);
3369 static bool intel_crtc_mode_fixup(struct drm_crtc *crtc,
3370 struct drm_display_mode *mode,
3371 struct drm_display_mode *adjusted_mode)
3373 struct drm_device *dev = crtc->dev;
3375 if (HAS_PCH_SPLIT(dev)) {
3376 /* FDI link clock is fixed at 2.7G */
3377 if (mode->clock * 3 > IRONLAKE_FDI_FREQ * 4)
3381 /* All interlaced capable intel hw wants timings in frames. Note though
3382 * that intel_lvds_mode_fixup does some funny tricks with the crtc
3383 * timings, so we need to be careful not to clobber these.*/
3384 if (!(adjusted_mode->private_flags & INTEL_MODE_CRTC_TIMINGS_SET))
3385 drm_mode_set_crtcinfo(adjusted_mode, 0);
3390 static int valleyview_get_display_clock_speed(struct drm_device *dev)
3392 return 400000; /* FIXME */
3395 static int i945_get_display_clock_speed(struct drm_device *dev)
3400 static int i915_get_display_clock_speed(struct drm_device *dev)
3405 static int i9xx_misc_get_display_clock_speed(struct drm_device *dev)
3410 static int i915gm_get_display_clock_speed(struct drm_device *dev)
3414 pci_read_config_word(dev->pdev, GCFGC, &gcfgc);
3416 if (gcfgc & GC_LOW_FREQUENCY_ENABLE)
3419 switch (gcfgc & GC_DISPLAY_CLOCK_MASK) {
3420 case GC_DISPLAY_CLOCK_333_MHZ:
3423 case GC_DISPLAY_CLOCK_190_200_MHZ:
3429 static int i865_get_display_clock_speed(struct drm_device *dev)
3434 static int i855_get_display_clock_speed(struct drm_device *dev)
3437 /* Assume that the hardware is in the high speed state. This
3438 * should be the default.
3440 switch (hpllcc & GC_CLOCK_CONTROL_MASK) {
3441 case GC_CLOCK_133_200:
3442 case GC_CLOCK_100_200:
3444 case GC_CLOCK_166_250:
3446 case GC_CLOCK_100_133:
3450 /* Shouldn't happen */
3454 static int i830_get_display_clock_speed(struct drm_device *dev)
3468 fdi_reduce_ratio(u32 *num, u32 *den)
3470 while (*num > 0xffffff || *den > 0xffffff) {
3477 ironlake_compute_m_n(int bits_per_pixel, int nlanes, int pixel_clock,
3478 int link_clock, struct fdi_m_n *m_n)
3480 m_n->tu = 64; /* default size */
3482 /* BUG_ON(pixel_clock > INT_MAX / 36); */
3483 m_n->gmch_m = bits_per_pixel * pixel_clock;
3484 m_n->gmch_n = link_clock * nlanes * 8;
3485 fdi_reduce_ratio(&m_n->gmch_m, &m_n->gmch_n);
3487 m_n->link_m = pixel_clock;
3488 m_n->link_n = link_clock;
3489 fdi_reduce_ratio(&m_n->link_m, &m_n->link_n);
3492 static inline bool intel_panel_use_ssc(struct drm_i915_private *dev_priv)
3494 if (i915_panel_use_ssc >= 0)
3495 return i915_panel_use_ssc != 0;
3496 return dev_priv->lvds_use_ssc
3497 && !(dev_priv->quirks & QUIRK_LVDS_SSC_DISABLE);
3501 * intel_choose_pipe_bpp_dither - figure out what color depth the pipe should send
3502 * @crtc: CRTC structure
3503 * @mode: requested mode
3505 * A pipe may be connected to one or more outputs. Based on the depth of the
3506 * attached framebuffer, choose a good color depth to use on the pipe.
3508 * If possible, match the pipe depth to the fb depth. In some cases, this
3509 * isn't ideal, because the connected output supports a lesser or restricted
3510 * set of depths. Resolve that here:
3511 * LVDS typically supports only 6bpc, so clamp down in that case
3512 * HDMI supports only 8bpc or 12bpc, so clamp to 8bpc with dither for 10bpc
3513 * Displays may support a restricted set as well, check EDID and clamp as
3515 * DP may want to dither down to 6bpc to fit larger modes
3518 * Dithering requirement (i.e. false if display bpc and pipe bpc match,
3519 * true if they don't match).
3521 static bool intel_choose_pipe_bpp_dither(struct drm_crtc *crtc,
3522 unsigned int *pipe_bpp,
3523 struct drm_display_mode *mode)
3525 struct drm_device *dev = crtc->dev;
3526 struct drm_i915_private *dev_priv = dev->dev_private;
3527 struct drm_encoder *encoder;
3528 struct drm_connector *connector;
3529 unsigned int display_bpc = UINT_MAX, bpc;
3531 /* Walk the encoders & connectors on this crtc, get min bpc */
3532 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
3533 struct intel_encoder *intel_encoder = to_intel_encoder(encoder);
3535 if (encoder->crtc != crtc)
3538 if (intel_encoder->type == INTEL_OUTPUT_LVDS) {
3539 unsigned int lvds_bpc;
3541 if ((I915_READ(PCH_LVDS) & LVDS_A3_POWER_MASK) ==
3547 if (lvds_bpc < display_bpc) {
3548 DRM_DEBUG_KMS("clamping display bpc (was %d) to LVDS (%d)\n", display_bpc, lvds_bpc);
3549 display_bpc = lvds_bpc;
3554 if (intel_encoder->type == INTEL_OUTPUT_EDP) {
3555 /* Use VBT settings if we have an eDP panel */
3556 unsigned int edp_bpc = dev_priv->edp.bpp / 3;
3558 if (edp_bpc < display_bpc) {
3559 DRM_DEBUG_KMS("clamping display bpc (was %d) to eDP (%d)\n", display_bpc, edp_bpc);
3560 display_bpc = edp_bpc;
3565 /* Not one of the known troublemakers, check the EDID */
3566 list_for_each_entry(connector, &dev->mode_config.connector_list,
3568 if (connector->encoder != encoder)
3571 /* Don't use an invalid EDID bpc value */
3572 if (connector->display_info.bpc &&
3573 connector->display_info.bpc < display_bpc) {
3574 DRM_DEBUG_KMS("clamping display bpc (was %d) to EDID reported max of %d\n", display_bpc, connector->display_info.bpc);
3575 display_bpc = connector->display_info.bpc;
3580 * HDMI is either 12 or 8, so if the display lets 10bpc sneak
3581 * through, clamp it down. (Note: >12bpc will be caught below.)
3583 if (intel_encoder->type == INTEL_OUTPUT_HDMI) {
3584 if (display_bpc > 8 && display_bpc < 12) {
3585 DRM_DEBUG_KMS("forcing bpc to 12 for HDMI\n");
3588 DRM_DEBUG_KMS("forcing bpc to 8 for HDMI\n");
3594 if (mode->private_flags & INTEL_MODE_DP_FORCE_6BPC) {
3595 DRM_DEBUG_KMS("Dithering DP to 6bpc\n");
3600 * We could just drive the pipe at the highest bpc all the time and
3601 * enable dithering as needed, but that costs bandwidth. So choose
3602 * the minimum value that expresses the full color range of the fb but
3603 * also stays within the max display bpc discovered above.
3606 switch (crtc->fb->depth) {
3608 bpc = 8; /* since we go through a colormap */
3612 bpc = 6; /* min is 18bpp */
3624 DRM_DEBUG("unsupported depth, assuming 24 bits\n");
3625 bpc = min((unsigned int)8, display_bpc);
3629 display_bpc = min(display_bpc, bpc);
3631 DRM_DEBUG_KMS("setting pipe bpc to %d (max display bpc %d)\n",
3634 *pipe_bpp = display_bpc * 3;
3636 return display_bpc != bpc;
3639 static int i9xx_get_refclk(struct drm_crtc *crtc, int num_connectors)
3641 struct drm_device *dev = crtc->dev;
3642 struct drm_i915_private *dev_priv = dev->dev_private;
3645 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) &&
3646 intel_panel_use_ssc(dev_priv) && num_connectors < 2) {
3647 refclk = dev_priv->lvds_ssc_freq * 1000;
3648 DRM_DEBUG_KMS("using SSC reference clock of %d MHz\n",
3650 } else if (!IS_GEN2(dev)) {
3659 static void i9xx_adjust_sdvo_tv_clock(struct drm_display_mode *adjusted_mode,
3660 intel_clock_t *clock)
3662 /* SDVO TV has fixed PLL values depend on its clock range,
3663 this mirrors vbios setting. */
3664 if (adjusted_mode->clock >= 100000
3665 && adjusted_mode->clock < 140500) {
3671 } else if (adjusted_mode->clock >= 140500
3672 && adjusted_mode->clock <= 200000) {
3681 static void i9xx_update_pll_dividers(struct drm_crtc *crtc,
3682 intel_clock_t *clock,
3683 intel_clock_t *reduced_clock)
3685 struct drm_device *dev = crtc->dev;
3686 struct drm_i915_private *dev_priv = dev->dev_private;
3687 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3688 int pipe = intel_crtc->pipe;
3691 if (IS_PINEVIEW(dev)) {
3692 fp = (1 << clock->n) << 16 | clock->m1 << 8 | clock->m2;
3694 fp2 = (1 << reduced_clock->n) << 16 |
3695 reduced_clock->m1 << 8 | reduced_clock->m2;
3697 fp = clock->n << 16 | clock->m1 << 8 | clock->m2;
3699 fp2 = reduced_clock->n << 16 | reduced_clock->m1 << 8 |
3703 I915_WRITE(FP0(pipe), fp);
3705 intel_crtc->lowfreq_avail = false;
3706 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) &&
3707 reduced_clock && i915_powersave) {
3708 I915_WRITE(FP1(pipe), fp2);
3709 intel_crtc->lowfreq_avail = true;
3711 I915_WRITE(FP1(pipe), fp);
3715 static void intel_update_lvds(struct drm_crtc *crtc, intel_clock_t *clock,
3716 struct drm_display_mode *adjusted_mode)
3718 struct drm_device *dev = crtc->dev;
3719 struct drm_i915_private *dev_priv = dev->dev_private;
3720 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3721 int pipe = intel_crtc->pipe;
3724 temp = I915_READ(LVDS);
3725 temp |= LVDS_PORT_EN | LVDS_A0A2_CLKA_POWER_UP;
3727 temp |= LVDS_PIPEB_SELECT;
3729 temp &= ~LVDS_PIPEB_SELECT;
3731 /* set the corresponsding LVDS_BORDER bit */
3732 temp |= dev_priv->lvds_border_bits;
3733 /* Set the B0-B3 data pairs corresponding to whether we're going to
3734 * set the DPLLs for dual-channel mode or not.
3737 temp |= LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP;
3739 temp &= ~(LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP);
3741 /* It would be nice to set 24 vs 18-bit mode (LVDS_A3_POWER_UP)
3742 * appropriately here, but we need to look more thoroughly into how
3743 * panels behave in the two modes.
3745 /* set the dithering flag on LVDS as needed */
3746 if (INTEL_INFO(dev)->gen >= 4) {
3747 if (dev_priv->lvds_dither)
3748 temp |= LVDS_ENABLE_DITHER;
3750 temp &= ~LVDS_ENABLE_DITHER;
3752 temp &= ~(LVDS_HSYNC_POLARITY | LVDS_VSYNC_POLARITY);
3753 if (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC)
3754 temp |= LVDS_HSYNC_POLARITY;
3755 if (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC)
3756 temp |= LVDS_VSYNC_POLARITY;
3757 I915_WRITE(LVDS, temp);
3760 static void i9xx_update_pll(struct drm_crtc *crtc,
3761 struct drm_display_mode *mode,
3762 struct drm_display_mode *adjusted_mode,
3763 intel_clock_t *clock, intel_clock_t *reduced_clock,
3766 struct drm_device *dev = crtc->dev;
3767 struct drm_i915_private *dev_priv = dev->dev_private;
3768 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3769 int pipe = intel_crtc->pipe;
3773 is_sdvo = intel_pipe_has_type(crtc, INTEL_OUTPUT_SDVO) ||
3774 intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI);
3776 dpll = DPLL_VGA_MODE_DIS;
3778 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
3779 dpll |= DPLLB_MODE_LVDS;
3781 dpll |= DPLLB_MODE_DAC_SERIAL;
3783 int pixel_multiplier = intel_mode_get_pixel_multiplier(adjusted_mode);
3784 if (pixel_multiplier > 1) {
3785 if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev))
3786 dpll |= (pixel_multiplier - 1) << SDVO_MULTIPLIER_SHIFT_HIRES;
3788 dpll |= DPLL_DVO_HIGH_SPEED;
3790 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT))
3791 dpll |= DPLL_DVO_HIGH_SPEED;
3793 /* compute bitmask from p1 value */
3794 if (IS_PINEVIEW(dev))
3795 dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW;
3797 dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
3798 if (IS_G4X(dev) && reduced_clock)
3799 dpll |= (1 << (reduced_clock->p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
3801 switch (clock->p2) {
3803 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
3806 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
3809 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
3812 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
3815 if (INTEL_INFO(dev)->gen >= 4)
3816 dpll |= (6 << PLL_LOAD_PULSE_PHASE_SHIFT);
3818 if (is_sdvo && intel_pipe_has_type(crtc, INTEL_OUTPUT_TVOUT))
3819 dpll |= PLL_REF_INPUT_TVCLKINBC;
3820 else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_TVOUT))
3821 /* XXX: just matching BIOS for now */
3822 /* dpll |= PLL_REF_INPUT_TVCLKINBC; */
3824 else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) &&
3825 intel_panel_use_ssc(dev_priv) && num_connectors < 2)
3826 dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
3828 dpll |= PLL_REF_INPUT_DREFCLK;
3830 dpll |= DPLL_VCO_ENABLE;
3831 I915_WRITE(DPLL(pipe), dpll & ~DPLL_VCO_ENABLE);
3832 POSTING_READ(DPLL(pipe));
3835 /* The LVDS pin pair needs to be on before the DPLLs are enabled.
3836 * This is an exception to the general rule that mode_set doesn't turn
3839 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
3840 intel_update_lvds(crtc, clock, adjusted_mode);
3842 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT))
3843 intel_dp_set_m_n(crtc, mode, adjusted_mode);
3845 I915_WRITE(DPLL(pipe), dpll);
3847 /* Wait for the clocks to stabilize. */
3848 POSTING_READ(DPLL(pipe));
3851 if (INTEL_INFO(dev)->gen >= 4) {
3854 temp = intel_mode_get_pixel_multiplier(adjusted_mode);
3856 temp = (temp - 1) << DPLL_MD_UDI_MULTIPLIER_SHIFT;
3860 I915_WRITE(DPLL_MD(pipe), temp);
3862 /* The pixel multiplier can only be updated once the
3863 * DPLL is enabled and the clocks are stable.
3865 * So write it again.
3867 I915_WRITE(DPLL(pipe), dpll);
3871 static void i8xx_update_pll(struct drm_crtc *crtc,
3872 struct drm_display_mode *adjusted_mode,
3873 intel_clock_t *clock,
3876 struct drm_device *dev = crtc->dev;
3877 struct drm_i915_private *dev_priv = dev->dev_private;
3878 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3879 int pipe = intel_crtc->pipe;
3882 dpll = DPLL_VGA_MODE_DIS;
3884 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
3885 dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
3888 dpll |= PLL_P1_DIVIDE_BY_TWO;
3890 dpll |= (clock->p1 - 2) << DPLL_FPA01_P1_POST_DIV_SHIFT;
3892 dpll |= PLL_P2_DIVIDE_BY_4;
3895 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_TVOUT))
3896 /* XXX: just matching BIOS for now */
3897 /* dpll |= PLL_REF_INPUT_TVCLKINBC; */
3899 else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) &&
3900 intel_panel_use_ssc(dev_priv) && num_connectors < 2)
3901 dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
3903 dpll |= PLL_REF_INPUT_DREFCLK;
3905 dpll |= DPLL_VCO_ENABLE;
3906 I915_WRITE(DPLL(pipe), dpll & ~DPLL_VCO_ENABLE);
3907 POSTING_READ(DPLL(pipe));
3910 I915_WRITE(DPLL(pipe), dpll);
3912 /* Wait for the clocks to stabilize. */
3913 POSTING_READ(DPLL(pipe));
3916 /* The LVDS pin pair needs to be on before the DPLLs are enabled.
3917 * This is an exception to the general rule that mode_set doesn't turn
3920 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
3921 intel_update_lvds(crtc, clock, adjusted_mode);
3923 /* The pixel multiplier can only be updated once the
3924 * DPLL is enabled and the clocks are stable.
3926 * So write it again.
3928 I915_WRITE(DPLL(pipe), dpll);
3931 static int i9xx_crtc_mode_set(struct drm_crtc *crtc,
3932 struct drm_display_mode *mode,
3933 struct drm_display_mode *adjusted_mode,
3935 struct drm_framebuffer *old_fb)
3937 struct drm_device *dev = crtc->dev;
3938 struct drm_i915_private *dev_priv = dev->dev_private;
3939 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3940 int pipe = intel_crtc->pipe;
3941 int plane = intel_crtc->plane;
3942 int refclk, num_connectors = 0;
3943 intel_clock_t clock, reduced_clock;
3944 u32 dspcntr, pipeconf, vsyncshift;
3945 bool ok, has_reduced_clock = false, is_sdvo = false;
3946 bool is_lvds = false, is_tv = false, is_dp = false;
3947 struct drm_mode_config *mode_config = &dev->mode_config;
3948 struct intel_encoder *encoder;
3949 const intel_limit_t *limit;
3952 list_for_each_entry(encoder, &mode_config->encoder_list, base.head) {
3953 if (encoder->base.crtc != crtc)
3956 switch (encoder->type) {
3957 case INTEL_OUTPUT_LVDS:
3960 case INTEL_OUTPUT_SDVO:
3961 case INTEL_OUTPUT_HDMI:
3963 if (encoder->needs_tv_clock)
3966 case INTEL_OUTPUT_TVOUT:
3969 case INTEL_OUTPUT_DISPLAYPORT:
3977 refclk = i9xx_get_refclk(crtc, num_connectors);
3980 * Returns a set of divisors for the desired target clock with the given
3981 * refclk, or FALSE. The returned values represent the clock equation:
3982 * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
3984 limit = intel_limit(crtc, refclk);
3985 ok = limit->find_pll(limit, crtc, adjusted_mode->clock, refclk, NULL,
3988 DRM_ERROR("Couldn't find PLL settings for mode!\n");
3992 /* Ensure that the cursor is valid for the new mode before changing... */
3993 intel_crtc_update_cursor(crtc, true);
3995 if (is_lvds && dev_priv->lvds_downclock_avail) {
3997 * Ensure we match the reduced clock's P to the target clock.
3998 * If the clocks don't match, we can't switch the display clock
3999 * by using the FP0/FP1. In such case we will disable the LVDS
4000 * downclock feature.
4002 has_reduced_clock = limit->find_pll(limit, crtc,
4003 dev_priv->lvds_downclock,
4009 if (is_sdvo && is_tv)
4010 i9xx_adjust_sdvo_tv_clock(adjusted_mode, &clock);
4012 i9xx_update_pll_dividers(crtc, &clock, has_reduced_clock ?
4013 &reduced_clock : NULL);
4016 i8xx_update_pll(crtc, adjusted_mode, &clock, num_connectors);
4018 i9xx_update_pll(crtc, mode, adjusted_mode, &clock,
4019 has_reduced_clock ? &reduced_clock : NULL,
4022 /* setup pipeconf */
4023 pipeconf = I915_READ(PIPECONF(pipe));
4025 /* Set up the display plane register */
4026 dspcntr = DISPPLANE_GAMMA_ENABLE;
4029 dspcntr &= ~DISPPLANE_SEL_PIPE_MASK;
4031 dspcntr |= DISPPLANE_SEL_PIPE_B;
4033 if (pipe == 0 && INTEL_INFO(dev)->gen < 4) {
4034 /* Enable pixel doubling when the dot clock is > 90% of the (display)
4037 * XXX: No double-wide on 915GM pipe B. Is that the only reason for the
4041 dev_priv->display.get_display_clock_speed(dev) * 9 / 10)
4042 pipeconf |= PIPECONF_DOUBLE_WIDE;
4044 pipeconf &= ~PIPECONF_DOUBLE_WIDE;
4047 /* default to 8bpc */
4048 pipeconf &= ~(PIPECONF_BPP_MASK | PIPECONF_DITHER_EN);
4050 if (mode->private_flags & INTEL_MODE_DP_FORCE_6BPC) {
4051 pipeconf |= PIPECONF_BPP_6 |
4052 PIPECONF_DITHER_EN |
4053 PIPECONF_DITHER_TYPE_SP;
4057 DRM_DEBUG_KMS("Mode for pipe %c:\n", pipe == 0 ? 'A' : 'B');
4058 drm_mode_debug_printmodeline(mode);
4060 if (HAS_PIPE_CXSR(dev)) {
4061 if (intel_crtc->lowfreq_avail) {
4062 DRM_DEBUG_KMS("enabling CxSR downclocking\n");
4063 pipeconf |= PIPECONF_CXSR_DOWNCLOCK;
4065 DRM_DEBUG_KMS("disabling CxSR downclocking\n");
4066 pipeconf &= ~PIPECONF_CXSR_DOWNCLOCK;
4070 pipeconf &= ~PIPECONF_INTERLACE_MASK;
4071 if (!IS_GEN2(dev) &&
4072 adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) {
4073 pipeconf |= PIPECONF_INTERLACE_W_FIELD_INDICATION;
4074 /* the chip adds 2 halflines automatically */
4075 adjusted_mode->crtc_vtotal -= 1;
4076 adjusted_mode->crtc_vblank_end -= 1;
4077 vsyncshift = adjusted_mode->crtc_hsync_start
4078 - adjusted_mode->crtc_htotal/2;
4080 pipeconf |= PIPECONF_PROGRESSIVE;
4085 I915_WRITE(VSYNCSHIFT(pipe), vsyncshift);
4087 I915_WRITE(HTOTAL(pipe),
4088 (adjusted_mode->crtc_hdisplay - 1) |
4089 ((adjusted_mode->crtc_htotal - 1) << 16));
4090 I915_WRITE(HBLANK(pipe),
4091 (adjusted_mode->crtc_hblank_start - 1) |
4092 ((adjusted_mode->crtc_hblank_end - 1) << 16));
4093 I915_WRITE(HSYNC(pipe),
4094 (adjusted_mode->crtc_hsync_start - 1) |
4095 ((adjusted_mode->crtc_hsync_end - 1) << 16));
4097 I915_WRITE(VTOTAL(pipe),
4098 (adjusted_mode->crtc_vdisplay - 1) |
4099 ((adjusted_mode->crtc_vtotal - 1) << 16));
4100 I915_WRITE(VBLANK(pipe),
4101 (adjusted_mode->crtc_vblank_start - 1) |
4102 ((adjusted_mode->crtc_vblank_end - 1) << 16));
4103 I915_WRITE(VSYNC(pipe),
4104 (adjusted_mode->crtc_vsync_start - 1) |
4105 ((adjusted_mode->crtc_vsync_end - 1) << 16));
4107 /* pipesrc and dspsize control the size that is scaled from,
4108 * which should always be the user's requested size.
4110 I915_WRITE(DSPSIZE(plane),
4111 ((mode->vdisplay - 1) << 16) |
4112 (mode->hdisplay - 1));
4113 I915_WRITE(DSPPOS(plane), 0);
4114 I915_WRITE(PIPESRC(pipe),
4115 ((mode->hdisplay - 1) << 16) | (mode->vdisplay - 1));
4117 I915_WRITE(PIPECONF(pipe), pipeconf);
4118 POSTING_READ(PIPECONF(pipe));
4119 intel_enable_pipe(dev_priv, pipe, false);
4121 intel_wait_for_vblank(dev, pipe);
4123 I915_WRITE(DSPCNTR(plane), dspcntr);
4124 POSTING_READ(DSPCNTR(plane));
4126 ret = intel_pipe_set_base(crtc, x, y, old_fb);
4128 intel_update_watermarks(dev);
4134 * Initialize reference clocks when the driver loads
4136 void ironlake_init_pch_refclk(struct drm_device *dev)
4138 struct drm_i915_private *dev_priv = dev->dev_private;
4139 struct drm_mode_config *mode_config = &dev->mode_config;
4140 struct intel_encoder *encoder;
4142 bool has_lvds = false;
4143 bool has_cpu_edp = false;
4144 bool has_pch_edp = false;
4145 bool has_panel = false;
4146 bool has_ck505 = false;
4147 bool can_ssc = false;
4149 /* We need to take the global config into account */
4150 list_for_each_entry(encoder, &mode_config->encoder_list,
4152 switch (encoder->type) {
4153 case INTEL_OUTPUT_LVDS:
4157 case INTEL_OUTPUT_EDP:
4159 if (intel_encoder_is_pch_edp(&encoder->base))
4167 if (HAS_PCH_IBX(dev)) {
4168 has_ck505 = dev_priv->display_clock_mode;
4169 can_ssc = has_ck505;
4175 DRM_DEBUG_KMS("has_panel %d has_lvds %d has_pch_edp %d has_cpu_edp %d has_ck505 %d\n",
4176 has_panel, has_lvds, has_pch_edp, has_cpu_edp,
4179 /* Ironlake: try to setup display ref clock before DPLL
4180 * enabling. This is only under driver's control after
4181 * PCH B stepping, previous chipset stepping should be
4182 * ignoring this setting.
4184 temp = I915_READ(PCH_DREF_CONTROL);
4185 /* Always enable nonspread source */
4186 temp &= ~DREF_NONSPREAD_SOURCE_MASK;
4189 temp |= DREF_NONSPREAD_CK505_ENABLE;
4191 temp |= DREF_NONSPREAD_SOURCE_ENABLE;
4194 temp &= ~DREF_SSC_SOURCE_MASK;
4195 temp |= DREF_SSC_SOURCE_ENABLE;
4197 /* SSC must be turned on before enabling the CPU output */
4198 if (intel_panel_use_ssc(dev_priv) && can_ssc) {
4199 DRM_DEBUG_KMS("Using SSC on panel\n");
4200 temp |= DREF_SSC1_ENABLE;
4202 temp &= ~DREF_SSC1_ENABLE;
4204 /* Get SSC going before enabling the outputs */
4205 I915_WRITE(PCH_DREF_CONTROL, temp);
4206 POSTING_READ(PCH_DREF_CONTROL);
4209 temp &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
4211 /* Enable CPU source on CPU attached eDP */
4213 if (intel_panel_use_ssc(dev_priv) && can_ssc) {
4214 DRM_DEBUG_KMS("Using SSC on eDP\n");
4215 temp |= DREF_CPU_SOURCE_OUTPUT_DOWNSPREAD;
4218 temp |= DREF_CPU_SOURCE_OUTPUT_NONSPREAD;
4220 temp |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
4222 I915_WRITE(PCH_DREF_CONTROL, temp);
4223 POSTING_READ(PCH_DREF_CONTROL);
4226 DRM_DEBUG_KMS("Disabling SSC entirely\n");
4228 temp &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
4230 /* Turn off CPU output */
4231 temp |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
4233 I915_WRITE(PCH_DREF_CONTROL, temp);
4234 POSTING_READ(PCH_DREF_CONTROL);
4237 /* Turn off the SSC source */
4238 temp &= ~DREF_SSC_SOURCE_MASK;
4239 temp |= DREF_SSC_SOURCE_DISABLE;
4242 temp &= ~ DREF_SSC1_ENABLE;
4244 I915_WRITE(PCH_DREF_CONTROL, temp);
4245 POSTING_READ(PCH_DREF_CONTROL);
4250 static int ironlake_get_refclk(struct drm_crtc *crtc)
4252 struct drm_device *dev = crtc->dev;
4253 struct drm_i915_private *dev_priv = dev->dev_private;
4254 struct intel_encoder *encoder;
4255 struct drm_mode_config *mode_config = &dev->mode_config;
4256 struct intel_encoder *edp_encoder = NULL;
4257 int num_connectors = 0;
4258 bool is_lvds = false;
4260 list_for_each_entry(encoder, &mode_config->encoder_list, base.head) {
4261 if (encoder->base.crtc != crtc)
4264 switch (encoder->type) {
4265 case INTEL_OUTPUT_LVDS:
4268 case INTEL_OUTPUT_EDP:
4269 edp_encoder = encoder;
4275 if (is_lvds && intel_panel_use_ssc(dev_priv) && num_connectors < 2) {
4276 DRM_DEBUG_KMS("using SSC reference clock of %d MHz\n",
4277 dev_priv->lvds_ssc_freq);
4278 return dev_priv->lvds_ssc_freq * 1000;
4284 static int ironlake_crtc_mode_set(struct drm_crtc *crtc,
4285 struct drm_display_mode *mode,
4286 struct drm_display_mode *adjusted_mode,
4288 struct drm_framebuffer *old_fb)
4290 struct drm_device *dev = crtc->dev;
4291 struct drm_i915_private *dev_priv = dev->dev_private;
4292 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4293 int pipe = intel_crtc->pipe;
4294 int plane = intel_crtc->plane;
4295 int refclk, num_connectors = 0;
4296 intel_clock_t clock, reduced_clock;
4297 u32 dpll, fp = 0, fp2 = 0, dspcntr, pipeconf;
4298 bool ok, has_reduced_clock = false, is_sdvo = false;
4299 bool is_crt = false, is_lvds = false, is_tv = false, is_dp = false;
4300 struct drm_mode_config *mode_config = &dev->mode_config;
4301 struct intel_encoder *encoder, *edp_encoder = NULL;
4302 const intel_limit_t *limit;
4304 struct fdi_m_n m_n = {0};
4306 int target_clock, pixel_multiplier, lane, link_bw, factor;
4307 unsigned int pipe_bpp;
4309 bool is_cpu_edp = false, is_pch_edp = false;
4311 list_for_each_entry(encoder, &mode_config->encoder_list, base.head) {
4312 if (encoder->base.crtc != crtc)
4315 switch (encoder->type) {
4316 case INTEL_OUTPUT_LVDS:
4319 case INTEL_OUTPUT_SDVO:
4320 case INTEL_OUTPUT_HDMI:
4322 if (encoder->needs_tv_clock)
4325 case INTEL_OUTPUT_TVOUT:
4328 case INTEL_OUTPUT_ANALOG:
4331 case INTEL_OUTPUT_DISPLAYPORT:
4334 case INTEL_OUTPUT_EDP:
4336 if (intel_encoder_is_pch_edp(&encoder->base))
4340 edp_encoder = encoder;
4347 refclk = ironlake_get_refclk(crtc);
4350 * Returns a set of divisors for the desired target clock with the given
4351 * refclk, or FALSE. The returned values represent the clock equation:
4352 * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
4354 limit = intel_limit(crtc, refclk);
4355 ok = limit->find_pll(limit, crtc, adjusted_mode->clock, refclk, NULL,
4358 DRM_ERROR("Couldn't find PLL settings for mode!\n");
4362 /* Ensure that the cursor is valid for the new mode before changing... */
4363 intel_crtc_update_cursor(crtc, true);
4365 if (is_lvds && dev_priv->lvds_downclock_avail) {
4367 * Ensure we match the reduced clock's P to the target clock.
4368 * If the clocks don't match, we can't switch the display clock
4369 * by using the FP0/FP1. In such case we will disable the LVDS
4370 * downclock feature.
4372 has_reduced_clock = limit->find_pll(limit, crtc,
4373 dev_priv->lvds_downclock,
4378 /* SDVO TV has fixed PLL values depend on its clock range,
4379 this mirrors vbios setting. */
4380 if (is_sdvo && is_tv) {
4381 if (adjusted_mode->clock >= 100000
4382 && adjusted_mode->clock < 140500) {
4388 } else if (adjusted_mode->clock >= 140500
4389 && adjusted_mode->clock <= 200000) {
4399 pixel_multiplier = intel_mode_get_pixel_multiplier(adjusted_mode);
4401 /* CPU eDP doesn't require FDI link, so just set DP M/N
4402 according to current link config */
4404 target_clock = mode->clock;
4405 intel_edp_link_config(edp_encoder, &lane, &link_bw);
4407 /* [e]DP over FDI requires target mode clock
4408 instead of link clock */
4410 target_clock = mode->clock;
4412 target_clock = adjusted_mode->clock;
4414 /* FDI is a binary signal running at ~2.7GHz, encoding
4415 * each output octet as 10 bits. The actual frequency
4416 * is stored as a divider into a 100MHz clock, and the
4417 * mode pixel clock is stored in units of 1KHz.
4418 * Hence the bw of each lane in terms of the mode signal
4421 link_bw = intel_fdi_link_freq(dev) * MHz(100)/KHz(1)/10;
4424 /* determine panel color depth */
4425 temp = I915_READ(PIPECONF(pipe));
4426 temp &= ~PIPE_BPC_MASK;
4427 dither = intel_choose_pipe_bpp_dither(crtc, &pipe_bpp, mode);
4442 WARN(1, "intel_choose_pipe_bpp returned invalid value %d\n",
4449 intel_crtc->bpp = pipe_bpp;
4450 I915_WRITE(PIPECONF(pipe), temp);
4454 * Account for spread spectrum to avoid
4455 * oversubscribing the link. Max center spread
4456 * is 2.5%; use 5% for safety's sake.
4458 u32 bps = target_clock * intel_crtc->bpp * 21 / 20;
4459 lane = bps / (link_bw * 8) + 1;
4462 intel_crtc->fdi_lanes = lane;
4464 if (pixel_multiplier > 1)
4465 link_bw *= pixel_multiplier;
4466 ironlake_compute_m_n(intel_crtc->bpp, lane, target_clock, link_bw,
4469 fp = clock.n << 16 | clock.m1 << 8 | clock.m2;
4470 if (has_reduced_clock)
4471 fp2 = reduced_clock.n << 16 | reduced_clock.m1 << 8 |
4474 /* Enable autotuning of the PLL clock (if permissible) */
4477 if ((intel_panel_use_ssc(dev_priv) &&
4478 dev_priv->lvds_ssc_freq == 100) ||
4479 (I915_READ(PCH_LVDS) & LVDS_CLKB_POWER_MASK) == LVDS_CLKB_POWER_UP)
4481 } else if (is_sdvo && is_tv)
4484 if (clock.m < factor * clock.n)
4490 dpll |= DPLLB_MODE_LVDS;
4492 dpll |= DPLLB_MODE_DAC_SERIAL;
4494 int pixel_multiplier = intel_mode_get_pixel_multiplier(adjusted_mode);
4495 if (pixel_multiplier > 1) {
4496 dpll |= (pixel_multiplier - 1) << PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT;
4498 dpll |= DPLL_DVO_HIGH_SPEED;
4500 if (is_dp && !is_cpu_edp)
4501 dpll |= DPLL_DVO_HIGH_SPEED;
4503 /* compute bitmask from p1 value */
4504 dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
4506 dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
4510 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
4513 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
4516 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
4519 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
4523 if (is_sdvo && is_tv)
4524 dpll |= PLL_REF_INPUT_TVCLKINBC;
4526 /* XXX: just matching BIOS for now */
4527 /* dpll |= PLL_REF_INPUT_TVCLKINBC; */
4529 else if (is_lvds && intel_panel_use_ssc(dev_priv) && num_connectors < 2)
4530 dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
4532 dpll |= PLL_REF_INPUT_DREFCLK;
4534 /* setup pipeconf */
4535 pipeconf = I915_READ(PIPECONF(pipe));
4537 /* Set up the display plane register */
4538 dspcntr = DISPPLANE_GAMMA_ENABLE;
4540 DRM_DEBUG_KMS("Mode for pipe %d:\n", pipe);
4541 drm_mode_debug_printmodeline(mode);
4543 /* CPU eDP is the only output that doesn't need a PCH PLL of its own on
4544 * pre-Haswell/LPT generation */
4545 if (HAS_PCH_LPT(dev)) {
4546 DRM_DEBUG_KMS("LPT detected: no PLL for pipe %d necessary\n",
4548 } else if (!is_cpu_edp) {
4549 struct intel_pch_pll *pll;
4551 pll = intel_get_pch_pll(intel_crtc, dpll, fp);
4553 DRM_DEBUG_DRIVER("failed to find PLL for pipe %d\n",
4558 intel_put_pch_pll(intel_crtc);
4560 /* The LVDS pin pair needs to be on before the DPLLs are enabled.
4561 * This is an exception to the general rule that mode_set doesn't turn
4565 temp = I915_READ(PCH_LVDS);
4566 temp |= LVDS_PORT_EN | LVDS_A0A2_CLKA_POWER_UP;
4567 if (HAS_PCH_CPT(dev)) {
4568 temp &= ~PORT_TRANS_SEL_MASK;
4569 temp |= PORT_TRANS_SEL_CPT(pipe);
4572 temp |= LVDS_PIPEB_SELECT;
4574 temp &= ~LVDS_PIPEB_SELECT;
4577 /* set the corresponsding LVDS_BORDER bit */
4578 temp |= dev_priv->lvds_border_bits;
4579 /* Set the B0-B3 data pairs corresponding to whether we're going to
4580 * set the DPLLs for dual-channel mode or not.
4583 temp |= LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP;
4585 temp &= ~(LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP);
4587 /* It would be nice to set 24 vs 18-bit mode (LVDS_A3_POWER_UP)
4588 * appropriately here, but we need to look more thoroughly into how
4589 * panels behave in the two modes.
4591 temp &= ~(LVDS_HSYNC_POLARITY | LVDS_VSYNC_POLARITY);
4592 if (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC)
4593 temp |= LVDS_HSYNC_POLARITY;
4594 if (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC)
4595 temp |= LVDS_VSYNC_POLARITY;
4596 I915_WRITE(PCH_LVDS, temp);
4599 pipeconf &= ~PIPECONF_DITHER_EN;
4600 pipeconf &= ~PIPECONF_DITHER_TYPE_MASK;
4601 if ((is_lvds && dev_priv->lvds_dither) || dither) {
4602 pipeconf |= PIPECONF_DITHER_EN;
4603 pipeconf |= PIPECONF_DITHER_TYPE_SP;
4605 if (is_dp && !is_cpu_edp) {
4606 intel_dp_set_m_n(crtc, mode, adjusted_mode);
4608 /* For non-DP output, clear any trans DP clock recovery setting.*/
4609 I915_WRITE(TRANSDATA_M1(pipe), 0);
4610 I915_WRITE(TRANSDATA_N1(pipe), 0);
4611 I915_WRITE(TRANSDPLINK_M1(pipe), 0);
4612 I915_WRITE(TRANSDPLINK_N1(pipe), 0);
4615 if (intel_crtc->pch_pll) {
4616 I915_WRITE(intel_crtc->pch_pll->pll_reg, dpll);
4618 /* Wait for the clocks to stabilize. */
4619 POSTING_READ(intel_crtc->pch_pll->pll_reg);
4622 /* The pixel multiplier can only be updated once the
4623 * DPLL is enabled and the clocks are stable.
4625 * So write it again.
4627 I915_WRITE(intel_crtc->pch_pll->pll_reg, dpll);
4630 intel_crtc->lowfreq_avail = false;
4631 if (intel_crtc->pch_pll) {
4632 if (is_lvds && has_reduced_clock && i915_powersave) {
4633 I915_WRITE(intel_crtc->pch_pll->fp1_reg, fp2);
4634 intel_crtc->lowfreq_avail = true;
4635 if (HAS_PIPE_CXSR(dev)) {
4636 DRM_DEBUG_KMS("enabling CxSR downclocking\n");
4637 pipeconf |= PIPECONF_CXSR_DOWNCLOCK;
4640 I915_WRITE(intel_crtc->pch_pll->fp1_reg, fp);
4641 if (HAS_PIPE_CXSR(dev)) {
4642 DRM_DEBUG_KMS("disabling CxSR downclocking\n");
4643 pipeconf &= ~PIPECONF_CXSR_DOWNCLOCK;
4648 pipeconf &= ~PIPECONF_INTERLACE_MASK;
4649 if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) {
4650 pipeconf |= PIPECONF_INTERLACED_ILK;
4651 /* the chip adds 2 halflines automatically */
4652 adjusted_mode->crtc_vtotal -= 1;
4653 adjusted_mode->crtc_vblank_end -= 1;
4654 I915_WRITE(VSYNCSHIFT(pipe),
4655 adjusted_mode->crtc_hsync_start
4656 - adjusted_mode->crtc_htotal/2);
4658 pipeconf |= PIPECONF_PROGRESSIVE;
4659 I915_WRITE(VSYNCSHIFT(pipe), 0);
4662 I915_WRITE(HTOTAL(pipe),
4663 (adjusted_mode->crtc_hdisplay - 1) |
4664 ((adjusted_mode->crtc_htotal - 1) << 16));
4665 I915_WRITE(HBLANK(pipe),
4666 (adjusted_mode->crtc_hblank_start - 1) |
4667 ((adjusted_mode->crtc_hblank_end - 1) << 16));
4668 I915_WRITE(HSYNC(pipe),
4669 (adjusted_mode->crtc_hsync_start - 1) |
4670 ((adjusted_mode->crtc_hsync_end - 1) << 16));
4672 I915_WRITE(VTOTAL(pipe),
4673 (adjusted_mode->crtc_vdisplay - 1) |
4674 ((adjusted_mode->crtc_vtotal - 1) << 16));
4675 I915_WRITE(VBLANK(pipe),
4676 (adjusted_mode->crtc_vblank_start - 1) |
4677 ((adjusted_mode->crtc_vblank_end - 1) << 16));
4678 I915_WRITE(VSYNC(pipe),
4679 (adjusted_mode->crtc_vsync_start - 1) |
4680 ((adjusted_mode->crtc_vsync_end - 1) << 16));
4682 /* pipesrc controls the size that is scaled from, which should
4683 * always be the user's requested size.
4685 I915_WRITE(PIPESRC(pipe),
4686 ((mode->hdisplay - 1) << 16) | (mode->vdisplay - 1));
4688 I915_WRITE(PIPE_DATA_M1(pipe), TU_SIZE(m_n.tu) | m_n.gmch_m);
4689 I915_WRITE(PIPE_DATA_N1(pipe), m_n.gmch_n);
4690 I915_WRITE(PIPE_LINK_M1(pipe), m_n.link_m);
4691 I915_WRITE(PIPE_LINK_N1(pipe), m_n.link_n);
4694 ironlake_set_pll_edp(crtc, adjusted_mode->clock);
4696 I915_WRITE(PIPECONF(pipe), pipeconf);
4697 POSTING_READ(PIPECONF(pipe));
4699 intel_wait_for_vblank(dev, pipe);
4701 I915_WRITE(DSPCNTR(plane), dspcntr);
4702 POSTING_READ(DSPCNTR(plane));
4704 ret = intel_pipe_set_base(crtc, x, y, old_fb);
4706 intel_update_watermarks(dev);
4708 intel_update_linetime_watermarks(dev, pipe, adjusted_mode);
4713 static int intel_crtc_mode_set(struct drm_crtc *crtc,
4714 struct drm_display_mode *mode,
4715 struct drm_display_mode *adjusted_mode,
4717 struct drm_framebuffer *old_fb)
4719 struct drm_device *dev = crtc->dev;
4720 struct drm_i915_private *dev_priv = dev->dev_private;
4721 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4722 int pipe = intel_crtc->pipe;
4725 drm_vblank_pre_modeset(dev, pipe);
4727 ret = dev_priv->display.crtc_mode_set(crtc, mode, adjusted_mode,
4729 drm_vblank_post_modeset(dev, pipe);
4732 intel_crtc->dpms_mode = DRM_MODE_DPMS_OFF;
4734 intel_crtc->dpms_mode = DRM_MODE_DPMS_ON;
4739 static bool intel_eld_uptodate(struct drm_connector *connector,
4740 int reg_eldv, uint32_t bits_eldv,
4741 int reg_elda, uint32_t bits_elda,
4744 struct drm_i915_private *dev_priv = connector->dev->dev_private;
4745 uint8_t *eld = connector->eld;
4748 i = I915_READ(reg_eldv);
4757 i = I915_READ(reg_elda);
4759 I915_WRITE(reg_elda, i);
4761 for (i = 0; i < eld[2]; i++)
4762 if (I915_READ(reg_edid) != *((uint32_t *)eld + i))
4768 static void g4x_write_eld(struct drm_connector *connector,
4769 struct drm_crtc *crtc)
4771 struct drm_i915_private *dev_priv = connector->dev->dev_private;
4772 uint8_t *eld = connector->eld;
4777 i = I915_READ(G4X_AUD_VID_DID);
4779 if (i == INTEL_AUDIO_DEVBLC || i == INTEL_AUDIO_DEVCL)
4780 eldv = G4X_ELDV_DEVCL_DEVBLC;
4782 eldv = G4X_ELDV_DEVCTG;
4784 if (intel_eld_uptodate(connector,
4785 G4X_AUD_CNTL_ST, eldv,
4786 G4X_AUD_CNTL_ST, G4X_ELD_ADDR,
4787 G4X_HDMIW_HDMIEDID))
4790 i = I915_READ(G4X_AUD_CNTL_ST);
4791 i &= ~(eldv | G4X_ELD_ADDR);
4792 len = (i >> 9) & 0x1f; /* ELD buffer size */
4793 I915_WRITE(G4X_AUD_CNTL_ST, i);
4798 len = min_t(uint8_t, eld[2], len);
4799 DRM_DEBUG_DRIVER("ELD size %d\n", len);
4800 for (i = 0; i < len; i++)
4801 I915_WRITE(G4X_HDMIW_HDMIEDID, *((uint32_t *)eld + i));
4803 i = I915_READ(G4X_AUD_CNTL_ST);
4805 I915_WRITE(G4X_AUD_CNTL_ST, i);
4808 static void ironlake_write_eld(struct drm_connector *connector,
4809 struct drm_crtc *crtc)
4811 struct drm_i915_private *dev_priv = connector->dev->dev_private;
4812 uint8_t *eld = connector->eld;
4821 if (HAS_PCH_IBX(connector->dev)) {
4822 hdmiw_hdmiedid = IBX_HDMIW_HDMIEDID_A;
4823 aud_config = IBX_AUD_CONFIG_A;
4824 aud_cntl_st = IBX_AUD_CNTL_ST_A;
4825 aud_cntrl_st2 = IBX_AUD_CNTL_ST2;
4827 hdmiw_hdmiedid = CPT_HDMIW_HDMIEDID_A;
4828 aud_config = CPT_AUD_CONFIG_A;
4829 aud_cntl_st = CPT_AUD_CNTL_ST_A;
4830 aud_cntrl_st2 = CPT_AUD_CNTRL_ST2;
4833 i = to_intel_crtc(crtc)->pipe;
4834 hdmiw_hdmiedid += i * 0x100;
4835 aud_cntl_st += i * 0x100;
4836 aud_config += i * 0x100;
4838 DRM_DEBUG_DRIVER("ELD on pipe %c\n", pipe_name(i));
4840 i = I915_READ(aud_cntl_st);
4841 i = (i >> 29) & 0x3; /* DIP_Port_Select, 0x1 = PortB */
4843 DRM_DEBUG_DRIVER("Audio directed to unknown port\n");
4844 /* operate blindly on all ports */
4845 eldv = IBX_ELD_VALIDB;
4846 eldv |= IBX_ELD_VALIDB << 4;
4847 eldv |= IBX_ELD_VALIDB << 8;
4849 DRM_DEBUG_DRIVER("ELD on port %c\n", 'A' + i);
4850 eldv = IBX_ELD_VALIDB << ((i - 1) * 4);
4853 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT)) {
4854 DRM_DEBUG_DRIVER("ELD: DisplayPort detected\n");
4855 eld[5] |= (1 << 2); /* Conn_Type, 0x1 = DisplayPort */
4856 I915_WRITE(aud_config, AUD_CONFIG_N_VALUE_INDEX); /* 0x1 = DP */
4858 I915_WRITE(aud_config, 0);
4860 if (intel_eld_uptodate(connector,
4861 aud_cntrl_st2, eldv,
4862 aud_cntl_st, IBX_ELD_ADDRESS,
4866 i = I915_READ(aud_cntrl_st2);
4868 I915_WRITE(aud_cntrl_st2, i);
4873 i = I915_READ(aud_cntl_st);
4874 i &= ~IBX_ELD_ADDRESS;
4875 I915_WRITE(aud_cntl_st, i);
4877 len = min_t(uint8_t, eld[2], 21); /* 84 bytes of hw ELD buffer */
4878 DRM_DEBUG_DRIVER("ELD size %d\n", len);
4879 for (i = 0; i < len; i++)
4880 I915_WRITE(hdmiw_hdmiedid, *((uint32_t *)eld + i));
4882 i = I915_READ(aud_cntrl_st2);
4884 I915_WRITE(aud_cntrl_st2, i);
4887 void intel_write_eld(struct drm_encoder *encoder,
4888 struct drm_display_mode *mode)
4890 struct drm_crtc *crtc = encoder->crtc;
4891 struct drm_connector *connector;
4892 struct drm_device *dev = encoder->dev;
4893 struct drm_i915_private *dev_priv = dev->dev_private;
4895 connector = drm_select_eld(encoder, mode);
4899 DRM_DEBUG_DRIVER("ELD on [CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
4901 drm_get_connector_name(connector),
4902 connector->encoder->base.id,
4903 drm_get_encoder_name(connector->encoder));
4905 connector->eld[6] = drm_av_sync_delay(connector, mode) / 2;
4907 if (dev_priv->display.write_eld)
4908 dev_priv->display.write_eld(connector, crtc);
4911 /** Loads the palette/gamma unit for the CRTC with the prepared values */
4912 void intel_crtc_load_lut(struct drm_crtc *crtc)
4914 struct drm_device *dev = crtc->dev;
4915 struct drm_i915_private *dev_priv = dev->dev_private;
4916 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4917 int palreg = PALETTE(intel_crtc->pipe);
4920 /* The clocks have to be on to load the palette. */
4921 if (!crtc->enabled || !intel_crtc->active)
4924 /* use legacy palette for Ironlake */
4925 if (HAS_PCH_SPLIT(dev))
4926 palreg = LGC_PALETTE(intel_crtc->pipe);
4928 for (i = 0; i < 256; i++) {
4929 I915_WRITE(palreg + 4 * i,
4930 (intel_crtc->lut_r[i] << 16) |
4931 (intel_crtc->lut_g[i] << 8) |
4932 intel_crtc->lut_b[i]);
4936 static void i845_update_cursor(struct drm_crtc *crtc, u32 base)
4938 struct drm_device *dev = crtc->dev;
4939 struct drm_i915_private *dev_priv = dev->dev_private;
4940 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4941 bool visible = base != 0;
4944 if (intel_crtc->cursor_visible == visible)
4947 cntl = I915_READ(_CURACNTR);
4949 /* On these chipsets we can only modify the base whilst
4950 * the cursor is disabled.
4952 I915_WRITE(_CURABASE, base);
4954 cntl &= ~(CURSOR_FORMAT_MASK);
4955 /* XXX width must be 64, stride 256 => 0x00 << 28 */
4956 cntl |= CURSOR_ENABLE |
4957 CURSOR_GAMMA_ENABLE |
4960 cntl &= ~(CURSOR_ENABLE | CURSOR_GAMMA_ENABLE);
4961 I915_WRITE(_CURACNTR, cntl);
4963 intel_crtc->cursor_visible = visible;
4966 static void i9xx_update_cursor(struct drm_crtc *crtc, u32 base)
4968 struct drm_device *dev = crtc->dev;
4969 struct drm_i915_private *dev_priv = dev->dev_private;
4970 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4971 int pipe = intel_crtc->pipe;
4972 bool visible = base != 0;
4974 if (intel_crtc->cursor_visible != visible) {
4975 uint32_t cntl = I915_READ(CURCNTR(pipe));
4977 cntl &= ~(CURSOR_MODE | MCURSOR_PIPE_SELECT);
4978 cntl |= CURSOR_MODE_64_ARGB_AX | MCURSOR_GAMMA_ENABLE;
4979 cntl |= pipe << 28; /* Connect to correct pipe */
4981 cntl &= ~(CURSOR_MODE | MCURSOR_GAMMA_ENABLE);
4982 cntl |= CURSOR_MODE_DISABLE;
4984 I915_WRITE(CURCNTR(pipe), cntl);
4986 intel_crtc->cursor_visible = visible;
4988 /* and commit changes on next vblank */
4989 I915_WRITE(CURBASE(pipe), base);
4992 static void ivb_update_cursor(struct drm_crtc *crtc, u32 base)
4994 struct drm_device *dev = crtc->dev;
4995 struct drm_i915_private *dev_priv = dev->dev_private;
4996 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4997 int pipe = intel_crtc->pipe;
4998 bool visible = base != 0;
5000 if (intel_crtc->cursor_visible != visible) {
5001 uint32_t cntl = I915_READ(CURCNTR_IVB(pipe));
5003 cntl &= ~CURSOR_MODE;
5004 cntl |= CURSOR_MODE_64_ARGB_AX | MCURSOR_GAMMA_ENABLE;
5006 cntl &= ~(CURSOR_MODE | MCURSOR_GAMMA_ENABLE);
5007 cntl |= CURSOR_MODE_DISABLE;
5009 I915_WRITE(CURCNTR_IVB(pipe), cntl);
5011 intel_crtc->cursor_visible = visible;
5013 /* and commit changes on next vblank */
5014 I915_WRITE(CURBASE_IVB(pipe), base);
5017 /* If no-part of the cursor is visible on the framebuffer, then the GPU may hang... */
5018 static void intel_crtc_update_cursor(struct drm_crtc *crtc,
5021 struct drm_device *dev = crtc->dev;
5022 struct drm_i915_private *dev_priv = dev->dev_private;
5023 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5024 int pipe = intel_crtc->pipe;
5025 int x = intel_crtc->cursor_x;
5026 int y = intel_crtc->cursor_y;
5032 if (on && crtc->enabled && crtc->fb) {
5033 base = intel_crtc->cursor_addr;
5034 if (x > (int) crtc->fb->width)
5037 if (y > (int) crtc->fb->height)
5043 if (x + intel_crtc->cursor_width < 0)
5046 pos |= CURSOR_POS_SIGN << CURSOR_X_SHIFT;
5049 pos |= x << CURSOR_X_SHIFT;
5052 if (y + intel_crtc->cursor_height < 0)
5055 pos |= CURSOR_POS_SIGN << CURSOR_Y_SHIFT;
5058 pos |= y << CURSOR_Y_SHIFT;
5060 visible = base != 0;
5061 if (!visible && !intel_crtc->cursor_visible)
5064 if (IS_IVYBRIDGE(dev) || IS_HASWELL(dev)) {
5065 I915_WRITE(CURPOS_IVB(pipe), pos);
5066 ivb_update_cursor(crtc, base);
5068 I915_WRITE(CURPOS(pipe), pos);
5069 if (IS_845G(dev) || IS_I865G(dev))
5070 i845_update_cursor(crtc, base);
5072 i9xx_update_cursor(crtc, base);
5076 static int intel_crtc_cursor_set(struct drm_crtc *crtc,
5077 struct drm_file *file,
5079 uint32_t width, uint32_t height)
5081 struct drm_device *dev = crtc->dev;
5082 struct drm_i915_private *dev_priv = dev->dev_private;
5083 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5084 struct drm_i915_gem_object *obj;
5088 DRM_DEBUG_KMS("\n");
5090 /* if we want to turn off the cursor ignore width and height */
5092 DRM_DEBUG_KMS("cursor off\n");
5095 mutex_lock(&dev->struct_mutex);
5099 /* Currently we only support 64x64 cursors */
5100 if (width != 64 || height != 64) {
5101 DRM_ERROR("we currently only support 64x64 cursors\n");
5105 obj = to_intel_bo(drm_gem_object_lookup(dev, file, handle));
5106 if (&obj->base == NULL)
5109 if (obj->base.size < width * height * 4) {
5110 DRM_ERROR("buffer is to small\n");
5115 /* we only need to pin inside GTT if cursor is non-phy */
5116 mutex_lock(&dev->struct_mutex);
5117 if (!dev_priv->info->cursor_needs_physical) {
5118 if (obj->tiling_mode) {
5119 DRM_ERROR("cursor cannot be tiled\n");
5124 ret = i915_gem_object_pin_to_display_plane(obj, 0, NULL);
5126 DRM_ERROR("failed to move cursor bo into the GTT\n");
5130 ret = i915_gem_object_put_fence(obj);
5132 DRM_ERROR("failed to release fence for cursor");
5136 addr = obj->gtt_offset;
5138 int align = IS_I830(dev) ? 16 * 1024 : 256;
5139 ret = i915_gem_attach_phys_object(dev, obj,
5140 (intel_crtc->pipe == 0) ? I915_GEM_PHYS_CURSOR_0 : I915_GEM_PHYS_CURSOR_1,
5143 DRM_ERROR("failed to attach phys object\n");
5146 addr = obj->phys_obj->handle->busaddr;
5150 I915_WRITE(CURSIZE, (height << 12) | width);
5153 if (intel_crtc->cursor_bo) {
5154 if (dev_priv->info->cursor_needs_physical) {
5155 if (intel_crtc->cursor_bo != obj)
5156 i915_gem_detach_phys_object(dev, intel_crtc->cursor_bo);
5158 i915_gem_object_unpin(intel_crtc->cursor_bo);
5159 drm_gem_object_unreference(&intel_crtc->cursor_bo->base);
5162 mutex_unlock(&dev->struct_mutex);
5164 intel_crtc->cursor_addr = addr;
5165 intel_crtc->cursor_bo = obj;
5166 intel_crtc->cursor_width = width;
5167 intel_crtc->cursor_height = height;
5169 intel_crtc_update_cursor(crtc, true);
5173 i915_gem_object_unpin(obj);
5175 mutex_unlock(&dev->struct_mutex);
5177 drm_gem_object_unreference_unlocked(&obj->base);
5181 static int intel_crtc_cursor_move(struct drm_crtc *crtc, int x, int y)
5183 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5185 intel_crtc->cursor_x = x;
5186 intel_crtc->cursor_y = y;
5188 intel_crtc_update_cursor(crtc, true);
5193 /** Sets the color ramps on behalf of RandR */
5194 void intel_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
5195 u16 blue, int regno)
5197 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5199 intel_crtc->lut_r[regno] = red >> 8;
5200 intel_crtc->lut_g[regno] = green >> 8;
5201 intel_crtc->lut_b[regno] = blue >> 8;
5204 void intel_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
5205 u16 *blue, int regno)
5207 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5209 *red = intel_crtc->lut_r[regno] << 8;
5210 *green = intel_crtc->lut_g[regno] << 8;
5211 *blue = intel_crtc->lut_b[regno] << 8;
5214 static void intel_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
5215 u16 *blue, uint32_t start, uint32_t size)
5217 int end = (start + size > 256) ? 256 : start + size, i;
5218 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5220 for (i = start; i < end; i++) {
5221 intel_crtc->lut_r[i] = red[i] >> 8;
5222 intel_crtc->lut_g[i] = green[i] >> 8;
5223 intel_crtc->lut_b[i] = blue[i] >> 8;
5226 intel_crtc_load_lut(crtc);
5230 * Get a pipe with a simple mode set on it for doing load-based monitor
5233 * It will be up to the load-detect code to adjust the pipe as appropriate for
5234 * its requirements. The pipe will be connected to no other encoders.
5236 * Currently this code will only succeed if there is a pipe with no encoders
5237 * configured for it. In the future, it could choose to temporarily disable
5238 * some outputs to free up a pipe for its use.
5240 * \return crtc, or NULL if no pipes are available.
5243 /* VESA 640x480x72Hz mode to set on the pipe */
5244 static struct drm_display_mode load_detect_mode = {
5245 DRM_MODE("640x480", DRM_MODE_TYPE_DEFAULT, 31500, 640, 664,
5246 704, 832, 0, 480, 489, 491, 520, 0, DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
5249 static struct drm_framebuffer *
5250 intel_framebuffer_create(struct drm_device *dev,
5251 struct drm_mode_fb_cmd2 *mode_cmd,
5252 struct drm_i915_gem_object *obj)
5254 struct intel_framebuffer *intel_fb;
5257 intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
5259 drm_gem_object_unreference_unlocked(&obj->base);
5260 return ERR_PTR(-ENOMEM);
5263 ret = intel_framebuffer_init(dev, intel_fb, mode_cmd, obj);
5265 drm_gem_object_unreference_unlocked(&obj->base);
5267 return ERR_PTR(ret);
5270 return &intel_fb->base;
5274 intel_framebuffer_pitch_for_width(int width, int bpp)
5276 u32 pitch = DIV_ROUND_UP(width * bpp, 8);
5277 return ALIGN(pitch, 64);
5281 intel_framebuffer_size_for_mode(struct drm_display_mode *mode, int bpp)
5283 u32 pitch = intel_framebuffer_pitch_for_width(mode->hdisplay, bpp);
5284 return ALIGN(pitch * mode->vdisplay, PAGE_SIZE);
5287 static struct drm_framebuffer *
5288 intel_framebuffer_create_for_mode(struct drm_device *dev,
5289 struct drm_display_mode *mode,
5292 struct drm_i915_gem_object *obj;
5293 struct drm_mode_fb_cmd2 mode_cmd;
5295 obj = i915_gem_alloc_object(dev,
5296 intel_framebuffer_size_for_mode(mode, bpp));
5298 return ERR_PTR(-ENOMEM);
5300 mode_cmd.width = mode->hdisplay;
5301 mode_cmd.height = mode->vdisplay;
5302 mode_cmd.pitches[0] = intel_framebuffer_pitch_for_width(mode_cmd.width,
5304 mode_cmd.pixel_format = drm_mode_legacy_fb_format(bpp, depth);
5306 return intel_framebuffer_create(dev, &mode_cmd, obj);
5309 static struct drm_framebuffer *
5310 mode_fits_in_fbdev(struct drm_device *dev,
5311 struct drm_display_mode *mode)
5313 struct drm_i915_private *dev_priv = dev->dev_private;
5314 struct drm_i915_gem_object *obj;
5315 struct drm_framebuffer *fb;
5317 if (dev_priv->fbdev == NULL)
5320 obj = dev_priv->fbdev->ifb.obj;
5324 fb = &dev_priv->fbdev->ifb.base;
5325 if (fb->pitches[0] < intel_framebuffer_pitch_for_width(mode->hdisplay,
5326 fb->bits_per_pixel))
5329 if (obj->base.size < mode->vdisplay * fb->pitches[0])
5335 bool intel_get_load_detect_pipe(struct intel_encoder *intel_encoder,
5336 struct drm_connector *connector,
5337 struct drm_display_mode *mode,
5338 struct intel_load_detect_pipe *old)
5340 struct intel_crtc *intel_crtc;
5341 struct drm_crtc *possible_crtc;
5342 struct drm_encoder *encoder = &intel_encoder->base;
5343 struct drm_crtc *crtc = NULL;
5344 struct drm_device *dev = encoder->dev;
5345 struct drm_framebuffer *old_fb;
5348 DRM_DEBUG_KMS("[CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
5349 connector->base.id, drm_get_connector_name(connector),
5350 encoder->base.id, drm_get_encoder_name(encoder));
5353 * Algorithm gets a little messy:
5355 * - if the connector already has an assigned crtc, use it (but make
5356 * sure it's on first)
5358 * - try to find the first unused crtc that can drive this connector,
5359 * and use that if we find one
5362 /* See if we already have a CRTC for this connector */
5363 if (encoder->crtc) {
5364 crtc = encoder->crtc;
5366 intel_crtc = to_intel_crtc(crtc);
5367 old->dpms_mode = intel_crtc->dpms_mode;
5368 old->load_detect_temp = false;
5370 /* Make sure the crtc and connector are running */
5371 if (intel_crtc->dpms_mode != DRM_MODE_DPMS_ON) {
5372 struct drm_encoder_helper_funcs *encoder_funcs;
5373 struct drm_crtc_helper_funcs *crtc_funcs;
5375 crtc_funcs = crtc->helper_private;
5376 crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON);
5378 encoder_funcs = encoder->helper_private;
5379 encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON);
5385 /* Find an unused one (if possible) */
5386 list_for_each_entry(possible_crtc, &dev->mode_config.crtc_list, head) {
5388 if (!(encoder->possible_crtcs & (1 << i)))
5390 if (!possible_crtc->enabled) {
5391 crtc = possible_crtc;
5397 * If we didn't find an unused CRTC, don't use any.
5400 DRM_DEBUG_KMS("no pipe available for load-detect\n");
5404 encoder->crtc = crtc;
5405 connector->encoder = encoder;
5407 intel_crtc = to_intel_crtc(crtc);
5408 old->dpms_mode = intel_crtc->dpms_mode;
5409 old->load_detect_temp = true;
5410 old->release_fb = NULL;
5413 mode = &load_detect_mode;
5417 /* We need a framebuffer large enough to accommodate all accesses
5418 * that the plane may generate whilst we perform load detection.
5419 * We can not rely on the fbcon either being present (we get called
5420 * during its initialisation to detect all boot displays, or it may
5421 * not even exist) or that it is large enough to satisfy the
5424 crtc->fb = mode_fits_in_fbdev(dev, mode);
5425 if (crtc->fb == NULL) {
5426 DRM_DEBUG_KMS("creating tmp fb for load-detection\n");
5427 crtc->fb = intel_framebuffer_create_for_mode(dev, mode, 24, 32);
5428 old->release_fb = crtc->fb;
5430 DRM_DEBUG_KMS("reusing fbdev for load-detection framebuffer\n");
5431 if (IS_ERR(crtc->fb)) {
5432 DRM_DEBUG_KMS("failed to allocate framebuffer for load-detection\n");
5437 if (!drm_crtc_helper_set_mode(crtc, mode, 0, 0, old_fb)) {
5438 DRM_DEBUG_KMS("failed to set mode on load-detect pipe\n");
5439 if (old->release_fb)
5440 old->release_fb->funcs->destroy(old->release_fb);
5445 /* let the connector get through one full cycle before testing */
5446 intel_wait_for_vblank(dev, intel_crtc->pipe);
5451 void intel_release_load_detect_pipe(struct intel_encoder *intel_encoder,
5452 struct drm_connector *connector,
5453 struct intel_load_detect_pipe *old)
5455 struct drm_encoder *encoder = &intel_encoder->base;
5456 struct drm_device *dev = encoder->dev;
5457 struct drm_crtc *crtc = encoder->crtc;
5458 struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
5459 struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
5461 DRM_DEBUG_KMS("[CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
5462 connector->base.id, drm_get_connector_name(connector),
5463 encoder->base.id, drm_get_encoder_name(encoder));
5465 if (old->load_detect_temp) {
5466 connector->encoder = NULL;
5467 drm_helper_disable_unused_functions(dev);
5469 if (old->release_fb)
5470 old->release_fb->funcs->destroy(old->release_fb);
5475 /* Switch crtc and encoder back off if necessary */
5476 if (old->dpms_mode != DRM_MODE_DPMS_ON) {
5477 encoder_funcs->dpms(encoder, old->dpms_mode);
5478 crtc_funcs->dpms(crtc, old->dpms_mode);
5482 /* Returns the clock of the currently programmed mode of the given pipe. */
5483 static int intel_crtc_clock_get(struct drm_device *dev, struct drm_crtc *crtc)
5485 struct drm_i915_private *dev_priv = dev->dev_private;
5486 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5487 int pipe = intel_crtc->pipe;
5488 u32 dpll = I915_READ(DPLL(pipe));
5490 intel_clock_t clock;
5492 if ((dpll & DISPLAY_RATE_SELECT_FPA1) == 0)
5493 fp = I915_READ(FP0(pipe));
5495 fp = I915_READ(FP1(pipe));
5497 clock.m1 = (fp & FP_M1_DIV_MASK) >> FP_M1_DIV_SHIFT;
5498 if (IS_PINEVIEW(dev)) {
5499 clock.n = ffs((fp & FP_N_PINEVIEW_DIV_MASK) >> FP_N_DIV_SHIFT) - 1;
5500 clock.m2 = (fp & FP_M2_PINEVIEW_DIV_MASK) >> FP_M2_DIV_SHIFT;
5502 clock.n = (fp & FP_N_DIV_MASK) >> FP_N_DIV_SHIFT;
5503 clock.m2 = (fp & FP_M2_DIV_MASK) >> FP_M2_DIV_SHIFT;
5506 if (!IS_GEN2(dev)) {
5507 if (IS_PINEVIEW(dev))
5508 clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_PINEVIEW) >>
5509 DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW);
5511 clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK) >>
5512 DPLL_FPA01_P1_POST_DIV_SHIFT);
5514 switch (dpll & DPLL_MODE_MASK) {
5515 case DPLLB_MODE_DAC_SERIAL:
5516 clock.p2 = dpll & DPLL_DAC_SERIAL_P2_CLOCK_DIV_5 ?
5519 case DPLLB_MODE_LVDS:
5520 clock.p2 = dpll & DPLLB_LVDS_P2_CLOCK_DIV_7 ?
5524 DRM_DEBUG_KMS("Unknown DPLL mode %08x in programmed "
5525 "mode\n", (int)(dpll & DPLL_MODE_MASK));
5529 /* XXX: Handle the 100Mhz refclk */
5530 intel_clock(dev, 96000, &clock);
5532 bool is_lvds = (pipe == 1) && (I915_READ(LVDS) & LVDS_PORT_EN);
5535 clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830_LVDS) >>
5536 DPLL_FPA01_P1_POST_DIV_SHIFT);
5539 if ((dpll & PLL_REF_INPUT_MASK) ==
5540 PLLB_REF_INPUT_SPREADSPECTRUMIN) {
5541 /* XXX: might not be 66MHz */
5542 intel_clock(dev, 66000, &clock);
5544 intel_clock(dev, 48000, &clock);
5546 if (dpll & PLL_P1_DIVIDE_BY_TWO)
5549 clock.p1 = ((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830) >>
5550 DPLL_FPA01_P1_POST_DIV_SHIFT) + 2;
5552 if (dpll & PLL_P2_DIVIDE_BY_4)
5557 intel_clock(dev, 48000, &clock);
5561 /* XXX: It would be nice to validate the clocks, but we can't reuse
5562 * i830PllIsValid() because it relies on the xf86_config connector
5563 * configuration being accurate, which it isn't necessarily.
5569 /** Returns the currently programmed mode of the given pipe. */
5570 struct drm_display_mode *intel_crtc_mode_get(struct drm_device *dev,
5571 struct drm_crtc *crtc)
5573 struct drm_i915_private *dev_priv = dev->dev_private;
5574 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5575 int pipe = intel_crtc->pipe;
5576 struct drm_display_mode *mode;
5577 int htot = I915_READ(HTOTAL(pipe));
5578 int hsync = I915_READ(HSYNC(pipe));
5579 int vtot = I915_READ(VTOTAL(pipe));
5580 int vsync = I915_READ(VSYNC(pipe));
5582 mode = kzalloc(sizeof(*mode), GFP_KERNEL);
5586 mode->clock = intel_crtc_clock_get(dev, crtc);
5587 mode->hdisplay = (htot & 0xffff) + 1;
5588 mode->htotal = ((htot & 0xffff0000) >> 16) + 1;
5589 mode->hsync_start = (hsync & 0xffff) + 1;
5590 mode->hsync_end = ((hsync & 0xffff0000) >> 16) + 1;
5591 mode->vdisplay = (vtot & 0xffff) + 1;
5592 mode->vtotal = ((vtot & 0xffff0000) >> 16) + 1;
5593 mode->vsync_start = (vsync & 0xffff) + 1;
5594 mode->vsync_end = ((vsync & 0xffff0000) >> 16) + 1;
5596 drm_mode_set_name(mode);
5601 #define GPU_IDLE_TIMEOUT 500 /* ms */
5603 /* When this timer fires, we've been idle for awhile */
5604 static void intel_gpu_idle_timer(unsigned long arg)
5606 struct drm_device *dev = (struct drm_device *)arg;
5607 drm_i915_private_t *dev_priv = dev->dev_private;
5609 if (!list_empty(&dev_priv->mm.active_list)) {
5610 /* Still processing requests, so just re-arm the timer. */
5611 mod_timer(&dev_priv->idle_timer, jiffies +
5612 msecs_to_jiffies(GPU_IDLE_TIMEOUT));
5616 dev_priv->busy = false;
5617 queue_work(dev_priv->wq, &dev_priv->idle_work);
5620 #define CRTC_IDLE_TIMEOUT 1000 /* ms */
5622 static void intel_crtc_idle_timer(unsigned long arg)
5624 struct intel_crtc *intel_crtc = (struct intel_crtc *)arg;
5625 struct drm_crtc *crtc = &intel_crtc->base;
5626 drm_i915_private_t *dev_priv = crtc->dev->dev_private;
5627 struct intel_framebuffer *intel_fb;
5629 intel_fb = to_intel_framebuffer(crtc->fb);
5630 if (intel_fb && intel_fb->obj->active) {
5631 /* The framebuffer is still being accessed by the GPU. */
5632 mod_timer(&intel_crtc->idle_timer, jiffies +
5633 msecs_to_jiffies(CRTC_IDLE_TIMEOUT));
5637 intel_crtc->busy = false;
5638 queue_work(dev_priv->wq, &dev_priv->idle_work);
5641 static void intel_increase_pllclock(struct drm_crtc *crtc)
5643 struct drm_device *dev = crtc->dev;
5644 drm_i915_private_t *dev_priv = dev->dev_private;
5645 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5646 int pipe = intel_crtc->pipe;
5647 int dpll_reg = DPLL(pipe);
5650 if (HAS_PCH_SPLIT(dev))
5653 if (!dev_priv->lvds_downclock_avail)
5656 dpll = I915_READ(dpll_reg);
5657 if (!HAS_PIPE_CXSR(dev) && (dpll & DISPLAY_RATE_SELECT_FPA1)) {
5658 DRM_DEBUG_DRIVER("upclocking LVDS\n");
5660 assert_panel_unlocked(dev_priv, pipe);
5662 dpll &= ~DISPLAY_RATE_SELECT_FPA1;
5663 I915_WRITE(dpll_reg, dpll);
5664 intel_wait_for_vblank(dev, pipe);
5666 dpll = I915_READ(dpll_reg);
5667 if (dpll & DISPLAY_RATE_SELECT_FPA1)
5668 DRM_DEBUG_DRIVER("failed to upclock LVDS!\n");
5671 /* Schedule downclock */
5672 mod_timer(&intel_crtc->idle_timer, jiffies +
5673 msecs_to_jiffies(CRTC_IDLE_TIMEOUT));
5676 static void intel_decrease_pllclock(struct drm_crtc *crtc)
5678 struct drm_device *dev = crtc->dev;
5679 drm_i915_private_t *dev_priv = dev->dev_private;
5680 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5682 if (HAS_PCH_SPLIT(dev))
5685 if (!dev_priv->lvds_downclock_avail)
5689 * Since this is called by a timer, we should never get here in
5692 if (!HAS_PIPE_CXSR(dev) && intel_crtc->lowfreq_avail) {
5693 int pipe = intel_crtc->pipe;
5694 int dpll_reg = DPLL(pipe);
5697 DRM_DEBUG_DRIVER("downclocking LVDS\n");
5699 assert_panel_unlocked(dev_priv, pipe);
5701 dpll = I915_READ(dpll_reg);
5702 dpll |= DISPLAY_RATE_SELECT_FPA1;
5703 I915_WRITE(dpll_reg, dpll);
5704 intel_wait_for_vblank(dev, pipe);
5705 dpll = I915_READ(dpll_reg);
5706 if (!(dpll & DISPLAY_RATE_SELECT_FPA1))
5707 DRM_DEBUG_DRIVER("failed to downclock LVDS!\n");
5713 * intel_idle_update - adjust clocks for idleness
5714 * @work: work struct
5716 * Either the GPU or display (or both) went idle. Check the busy status
5717 * here and adjust the CRTC and GPU clocks as necessary.
5719 static void intel_idle_update(struct work_struct *work)
5721 drm_i915_private_t *dev_priv = container_of(work, drm_i915_private_t,
5723 struct drm_device *dev = dev_priv->dev;
5724 struct drm_crtc *crtc;
5725 struct intel_crtc *intel_crtc;
5727 if (!i915_powersave)
5730 mutex_lock(&dev->struct_mutex);
5732 i915_update_gfx_val(dev_priv);
5734 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
5735 /* Skip inactive CRTCs */
5739 intel_crtc = to_intel_crtc(crtc);
5740 if (!intel_crtc->busy)
5741 intel_decrease_pllclock(crtc);
5745 mutex_unlock(&dev->struct_mutex);
5749 * intel_mark_busy - mark the GPU and possibly the display busy
5751 * @obj: object we're operating on
5753 * Callers can use this function to indicate that the GPU is busy processing
5754 * commands. If @obj matches one of the CRTC objects (i.e. it's a scanout
5755 * buffer), we'll also mark the display as busy, so we know to increase its
5758 void intel_mark_busy(struct drm_device *dev, struct drm_i915_gem_object *obj)
5760 drm_i915_private_t *dev_priv = dev->dev_private;
5761 struct drm_crtc *crtc = NULL;
5762 struct intel_framebuffer *intel_fb;
5763 struct intel_crtc *intel_crtc;
5765 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5768 if (!dev_priv->busy) {
5769 intel_sanitize_pm(dev);
5770 dev_priv->busy = true;
5772 mod_timer(&dev_priv->idle_timer, jiffies +
5773 msecs_to_jiffies(GPU_IDLE_TIMEOUT));
5778 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
5782 intel_crtc = to_intel_crtc(crtc);
5783 intel_fb = to_intel_framebuffer(crtc->fb);
5784 if (intel_fb->obj == obj) {
5785 if (!intel_crtc->busy) {
5786 /* Non-busy -> busy, upclock */
5787 intel_increase_pllclock(crtc);
5788 intel_crtc->busy = true;
5790 /* Busy -> busy, put off timer */
5791 mod_timer(&intel_crtc->idle_timer, jiffies +
5792 msecs_to_jiffies(CRTC_IDLE_TIMEOUT));
5798 static void intel_crtc_destroy(struct drm_crtc *crtc)
5800 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5801 struct drm_device *dev = crtc->dev;
5802 struct intel_unpin_work *work;
5803 unsigned long flags;
5805 spin_lock_irqsave(&dev->event_lock, flags);
5806 work = intel_crtc->unpin_work;
5807 intel_crtc->unpin_work = NULL;
5808 spin_unlock_irqrestore(&dev->event_lock, flags);
5811 cancel_work_sync(&work->work);
5815 drm_crtc_cleanup(crtc);
5820 static void intel_unpin_work_fn(struct work_struct *__work)
5822 struct intel_unpin_work *work =
5823 container_of(__work, struct intel_unpin_work, work);
5825 mutex_lock(&work->dev->struct_mutex);
5826 intel_unpin_fb_obj(work->old_fb_obj);
5827 drm_gem_object_unreference(&work->pending_flip_obj->base);
5828 drm_gem_object_unreference(&work->old_fb_obj->base);
5830 intel_update_fbc(work->dev);
5831 mutex_unlock(&work->dev->struct_mutex);
5835 static void do_intel_finish_page_flip(struct drm_device *dev,
5836 struct drm_crtc *crtc)
5838 drm_i915_private_t *dev_priv = dev->dev_private;
5839 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5840 struct intel_unpin_work *work;
5841 struct drm_i915_gem_object *obj;
5842 struct drm_pending_vblank_event *e;
5843 struct timeval tnow, tvbl;
5844 unsigned long flags;
5846 /* Ignore early vblank irqs */
5847 if (intel_crtc == NULL)
5850 do_gettimeofday(&tnow);
5852 spin_lock_irqsave(&dev->event_lock, flags);
5853 work = intel_crtc->unpin_work;
5854 if (work == NULL || !work->pending) {
5855 spin_unlock_irqrestore(&dev->event_lock, flags);
5859 intel_crtc->unpin_work = NULL;
5863 e->event.sequence = drm_vblank_count_and_time(dev, intel_crtc->pipe, &tvbl);
5865 /* Called before vblank count and timestamps have
5866 * been updated for the vblank interval of flip
5867 * completion? Need to increment vblank count and
5868 * add one videorefresh duration to returned timestamp
5869 * to account for this. We assume this happened if we
5870 * get called over 0.9 frame durations after the last
5871 * timestamped vblank.
5873 * This calculation can not be used with vrefresh rates
5874 * below 5Hz (10Hz to be on the safe side) without
5875 * promoting to 64 integers.
5877 if (10 * (timeval_to_ns(&tnow) - timeval_to_ns(&tvbl)) >
5878 9 * crtc->framedur_ns) {
5879 e->event.sequence++;
5880 tvbl = ns_to_timeval(timeval_to_ns(&tvbl) +
5884 e->event.tv_sec = tvbl.tv_sec;
5885 e->event.tv_usec = tvbl.tv_usec;
5887 list_add_tail(&e->base.link,
5888 &e->base.file_priv->event_list);
5889 wake_up_interruptible(&e->base.file_priv->event_wait);
5892 drm_vblank_put(dev, intel_crtc->pipe);
5894 spin_unlock_irqrestore(&dev->event_lock, flags);
5896 obj = work->old_fb_obj;
5898 atomic_clear_mask(1 << intel_crtc->plane,
5899 &obj->pending_flip.counter);
5900 if (atomic_read(&obj->pending_flip) == 0)
5901 wake_up(&dev_priv->pending_flip_queue);
5903 schedule_work(&work->work);
5905 trace_i915_flip_complete(intel_crtc->plane, work->pending_flip_obj);
5908 void intel_finish_page_flip(struct drm_device *dev, int pipe)
5910 drm_i915_private_t *dev_priv = dev->dev_private;
5911 struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
5913 do_intel_finish_page_flip(dev, crtc);
5916 void intel_finish_page_flip_plane(struct drm_device *dev, int plane)
5918 drm_i915_private_t *dev_priv = dev->dev_private;
5919 struct drm_crtc *crtc = dev_priv->plane_to_crtc_mapping[plane];
5921 do_intel_finish_page_flip(dev, crtc);
5924 void intel_prepare_page_flip(struct drm_device *dev, int plane)
5926 drm_i915_private_t *dev_priv = dev->dev_private;
5927 struct intel_crtc *intel_crtc =
5928 to_intel_crtc(dev_priv->plane_to_crtc_mapping[plane]);
5929 unsigned long flags;
5931 spin_lock_irqsave(&dev->event_lock, flags);
5932 if (intel_crtc->unpin_work) {
5933 if ((++intel_crtc->unpin_work->pending) > 1)
5934 DRM_ERROR("Prepared flip multiple times\n");
5936 DRM_DEBUG_DRIVER("preparing flip with no unpin work?\n");
5938 spin_unlock_irqrestore(&dev->event_lock, flags);
5941 static int intel_gen2_queue_flip(struct drm_device *dev,
5942 struct drm_crtc *crtc,
5943 struct drm_framebuffer *fb,
5944 struct drm_i915_gem_object *obj)
5946 struct drm_i915_private *dev_priv = dev->dev_private;
5947 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5948 unsigned long offset;
5950 struct intel_ring_buffer *ring = &dev_priv->ring[RCS];
5953 ret = intel_pin_and_fence_fb_obj(dev, obj, ring);
5957 /* Offset into the new buffer for cases of shared fbs between CRTCs */
5958 offset = crtc->y * fb->pitches[0] + crtc->x * fb->bits_per_pixel/8;
5960 ret = intel_ring_begin(ring, 6);
5964 /* Can't queue multiple flips, so wait for the previous
5965 * one to finish before executing the next.
5967 if (intel_crtc->plane)
5968 flip_mask = MI_WAIT_FOR_PLANE_B_FLIP;
5970 flip_mask = MI_WAIT_FOR_PLANE_A_FLIP;
5971 intel_ring_emit(ring, MI_WAIT_FOR_EVENT | flip_mask);
5972 intel_ring_emit(ring, MI_NOOP);
5973 intel_ring_emit(ring, MI_DISPLAY_FLIP |
5974 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
5975 intel_ring_emit(ring, fb->pitches[0]);
5976 intel_ring_emit(ring, obj->gtt_offset + offset);
5977 intel_ring_emit(ring, 0); /* aux display base address, unused */
5978 intel_ring_advance(ring);
5982 intel_unpin_fb_obj(obj);
5987 static int intel_gen3_queue_flip(struct drm_device *dev,
5988 struct drm_crtc *crtc,
5989 struct drm_framebuffer *fb,
5990 struct drm_i915_gem_object *obj)
5992 struct drm_i915_private *dev_priv = dev->dev_private;
5993 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5994 unsigned long offset;
5996 struct intel_ring_buffer *ring = &dev_priv->ring[RCS];
5999 ret = intel_pin_and_fence_fb_obj(dev, obj, ring);
6003 /* Offset into the new buffer for cases of shared fbs between CRTCs */
6004 offset = crtc->y * fb->pitches[0] + crtc->x * fb->bits_per_pixel/8;
6006 ret = intel_ring_begin(ring, 6);
6010 if (intel_crtc->plane)
6011 flip_mask = MI_WAIT_FOR_PLANE_B_FLIP;
6013 flip_mask = MI_WAIT_FOR_PLANE_A_FLIP;
6014 intel_ring_emit(ring, MI_WAIT_FOR_EVENT | flip_mask);
6015 intel_ring_emit(ring, MI_NOOP);
6016 intel_ring_emit(ring, MI_DISPLAY_FLIP_I915 |
6017 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
6018 intel_ring_emit(ring, fb->pitches[0]);
6019 intel_ring_emit(ring, obj->gtt_offset + offset);
6020 intel_ring_emit(ring, MI_NOOP);
6022 intel_ring_advance(ring);
6026 intel_unpin_fb_obj(obj);
6031 static int intel_gen4_queue_flip(struct drm_device *dev,
6032 struct drm_crtc *crtc,
6033 struct drm_framebuffer *fb,
6034 struct drm_i915_gem_object *obj)
6036 struct drm_i915_private *dev_priv = dev->dev_private;
6037 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6038 uint32_t pf, pipesrc;
6039 struct intel_ring_buffer *ring = &dev_priv->ring[RCS];
6042 ret = intel_pin_and_fence_fb_obj(dev, obj, ring);
6046 ret = intel_ring_begin(ring, 4);
6050 /* i965+ uses the linear or tiled offsets from the
6051 * Display Registers (which do not change across a page-flip)
6052 * so we need only reprogram the base address.
6054 intel_ring_emit(ring, MI_DISPLAY_FLIP |
6055 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
6056 intel_ring_emit(ring, fb->pitches[0]);
6057 intel_ring_emit(ring, obj->gtt_offset | obj->tiling_mode);
6059 /* XXX Enabling the panel-fitter across page-flip is so far
6060 * untested on non-native modes, so ignore it for now.
6061 * pf = I915_READ(pipe == 0 ? PFA_CTL_1 : PFB_CTL_1) & PF_ENABLE;
6064 pipesrc = I915_READ(PIPESRC(intel_crtc->pipe)) & 0x0fff0fff;
6065 intel_ring_emit(ring, pf | pipesrc);
6066 intel_ring_advance(ring);
6070 intel_unpin_fb_obj(obj);
6075 static int intel_gen6_queue_flip(struct drm_device *dev,
6076 struct drm_crtc *crtc,
6077 struct drm_framebuffer *fb,
6078 struct drm_i915_gem_object *obj)
6080 struct drm_i915_private *dev_priv = dev->dev_private;
6081 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6082 struct intel_ring_buffer *ring = &dev_priv->ring[RCS];
6083 uint32_t pf, pipesrc;
6086 ret = intel_pin_and_fence_fb_obj(dev, obj, ring);
6090 ret = intel_ring_begin(ring, 4);
6094 intel_ring_emit(ring, MI_DISPLAY_FLIP |
6095 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
6096 intel_ring_emit(ring, fb->pitches[0] | obj->tiling_mode);
6097 intel_ring_emit(ring, obj->gtt_offset);
6099 /* Contrary to the suggestions in the documentation,
6100 * "Enable Panel Fitter" does not seem to be required when page
6101 * flipping with a non-native mode, and worse causes a normal
6103 * pf = I915_READ(PF_CTL(intel_crtc->pipe)) & PF_ENABLE;
6106 pipesrc = I915_READ(PIPESRC(intel_crtc->pipe)) & 0x0fff0fff;
6107 intel_ring_emit(ring, pf | pipesrc);
6108 intel_ring_advance(ring);
6112 intel_unpin_fb_obj(obj);
6118 * On gen7 we currently use the blit ring because (in early silicon at least)
6119 * the render ring doesn't give us interrpts for page flip completion, which
6120 * means clients will hang after the first flip is queued. Fortunately the
6121 * blit ring generates interrupts properly, so use it instead.
6123 static int intel_gen7_queue_flip(struct drm_device *dev,
6124 struct drm_crtc *crtc,
6125 struct drm_framebuffer *fb,
6126 struct drm_i915_gem_object *obj)
6128 struct drm_i915_private *dev_priv = dev->dev_private;
6129 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6130 struct intel_ring_buffer *ring = &dev_priv->ring[BCS];
6133 ret = intel_pin_and_fence_fb_obj(dev, obj, ring);
6137 ret = intel_ring_begin(ring, 4);
6141 intel_ring_emit(ring, MI_DISPLAY_FLIP_I915 | (intel_crtc->plane << 19));
6142 intel_ring_emit(ring, (fb->pitches[0] | obj->tiling_mode));
6143 intel_ring_emit(ring, (obj->gtt_offset));
6144 intel_ring_emit(ring, (MI_NOOP));
6145 intel_ring_advance(ring);
6149 intel_unpin_fb_obj(obj);
6154 static int intel_default_queue_flip(struct drm_device *dev,
6155 struct drm_crtc *crtc,
6156 struct drm_framebuffer *fb,
6157 struct drm_i915_gem_object *obj)
6162 static int intel_crtc_page_flip(struct drm_crtc *crtc,
6163 struct drm_framebuffer *fb,
6164 struct drm_pending_vblank_event *event)
6166 struct drm_device *dev = crtc->dev;
6167 struct drm_i915_private *dev_priv = dev->dev_private;
6168 struct intel_framebuffer *intel_fb;
6169 struct drm_i915_gem_object *obj;
6170 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6171 struct intel_unpin_work *work;
6172 unsigned long flags;
6175 work = kzalloc(sizeof *work, GFP_KERNEL);
6179 work->event = event;
6180 work->dev = crtc->dev;
6181 intel_fb = to_intel_framebuffer(crtc->fb);
6182 work->old_fb_obj = intel_fb->obj;
6183 INIT_WORK(&work->work, intel_unpin_work_fn);
6185 ret = drm_vblank_get(dev, intel_crtc->pipe);
6189 /* We borrow the event spin lock for protecting unpin_work */
6190 spin_lock_irqsave(&dev->event_lock, flags);
6191 if (intel_crtc->unpin_work) {
6192 spin_unlock_irqrestore(&dev->event_lock, flags);
6194 drm_vblank_put(dev, intel_crtc->pipe);
6196 DRM_DEBUG_DRIVER("flip queue: crtc already busy\n");
6199 intel_crtc->unpin_work = work;
6200 spin_unlock_irqrestore(&dev->event_lock, flags);
6202 intel_fb = to_intel_framebuffer(fb);
6203 obj = intel_fb->obj;
6205 mutex_lock(&dev->struct_mutex);
6207 /* Reference the objects for the scheduled work. */
6208 drm_gem_object_reference(&work->old_fb_obj->base);
6209 drm_gem_object_reference(&obj->base);
6213 work->pending_flip_obj = obj;
6215 work->enable_stall_check = true;
6217 /* Block clients from rendering to the new back buffer until
6218 * the flip occurs and the object is no longer visible.
6220 atomic_add(1 << intel_crtc->plane, &work->old_fb_obj->pending_flip);
6222 ret = dev_priv->display.queue_flip(dev, crtc, fb, obj);
6224 goto cleanup_pending;
6226 intel_disable_fbc(dev);
6227 intel_mark_busy(dev, obj);
6228 mutex_unlock(&dev->struct_mutex);
6230 trace_i915_flip_request(intel_crtc->plane, obj);
6235 atomic_sub(1 << intel_crtc->plane, &work->old_fb_obj->pending_flip);
6236 drm_gem_object_unreference(&work->old_fb_obj->base);
6237 drm_gem_object_unreference(&obj->base);
6238 mutex_unlock(&dev->struct_mutex);
6240 spin_lock_irqsave(&dev->event_lock, flags);
6241 intel_crtc->unpin_work = NULL;
6242 spin_unlock_irqrestore(&dev->event_lock, flags);
6244 drm_vblank_put(dev, intel_crtc->pipe);
6251 static void intel_sanitize_modesetting(struct drm_device *dev,
6252 int pipe, int plane)
6254 struct drm_i915_private *dev_priv = dev->dev_private;
6258 /* Clear any frame start delays used for debugging left by the BIOS */
6261 I915_WRITE(reg, I915_READ(reg) & ~PIPECONF_FRAME_START_DELAY_MASK);
6264 if (HAS_PCH_SPLIT(dev))
6267 /* Who knows what state these registers were left in by the BIOS or
6270 * If we leave the registers in a conflicting state (e.g. with the
6271 * display plane reading from the other pipe than the one we intend
6272 * to use) then when we attempt to teardown the active mode, we will
6273 * not disable the pipes and planes in the correct order -- leaving
6274 * a plane reading from a disabled pipe and possibly leading to
6275 * undefined behaviour.
6278 reg = DSPCNTR(plane);
6279 val = I915_READ(reg);
6281 if ((val & DISPLAY_PLANE_ENABLE) == 0)
6283 if (!!(val & DISPPLANE_SEL_PIPE_MASK) == pipe)
6286 /* This display plane is active and attached to the other CPU pipe. */
6289 /* Disable the plane and wait for it to stop reading from the pipe. */
6290 intel_disable_plane(dev_priv, plane, pipe);
6291 intel_disable_pipe(dev_priv, pipe);
6294 static void intel_crtc_reset(struct drm_crtc *crtc)
6296 struct drm_device *dev = crtc->dev;
6297 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
6299 /* Reset flags back to the 'unknown' status so that they
6300 * will be correctly set on the initial modeset.
6302 intel_crtc->dpms_mode = -1;
6304 /* We need to fix up any BIOS configuration that conflicts with
6307 intel_sanitize_modesetting(dev, intel_crtc->pipe, intel_crtc->plane);
6310 static struct drm_crtc_helper_funcs intel_helper_funcs = {
6311 .dpms = intel_crtc_dpms,
6312 .mode_fixup = intel_crtc_mode_fixup,
6313 .mode_set = intel_crtc_mode_set,
6314 .mode_set_base = intel_pipe_set_base,
6315 .mode_set_base_atomic = intel_pipe_set_base_atomic,
6316 .load_lut = intel_crtc_load_lut,
6317 .disable = intel_crtc_disable,
6320 static const struct drm_crtc_funcs intel_crtc_funcs = {
6321 .reset = intel_crtc_reset,
6322 .cursor_set = intel_crtc_cursor_set,
6323 .cursor_move = intel_crtc_cursor_move,
6324 .gamma_set = intel_crtc_gamma_set,
6325 .set_config = drm_crtc_helper_set_config,
6326 .destroy = intel_crtc_destroy,
6327 .page_flip = intel_crtc_page_flip,
6330 static void intel_pch_pll_init(struct drm_device *dev)
6332 drm_i915_private_t *dev_priv = dev->dev_private;
6335 if (dev_priv->num_pch_pll == 0) {
6336 DRM_DEBUG_KMS("No PCH PLLs on this hardware, skipping initialisation\n");
6340 for (i = 0; i < dev_priv->num_pch_pll; i++) {
6341 dev_priv->pch_plls[i].pll_reg = _PCH_DPLL(i);
6342 dev_priv->pch_plls[i].fp0_reg = _PCH_FP0(i);
6343 dev_priv->pch_plls[i].fp1_reg = _PCH_FP1(i);
6347 static void intel_crtc_init(struct drm_device *dev, int pipe)
6349 drm_i915_private_t *dev_priv = dev->dev_private;
6350 struct intel_crtc *intel_crtc;
6353 intel_crtc = kzalloc(sizeof(struct intel_crtc) + (INTELFB_CONN_LIMIT * sizeof(struct drm_connector *)), GFP_KERNEL);
6354 if (intel_crtc == NULL)
6357 drm_crtc_init(dev, &intel_crtc->base, &intel_crtc_funcs);
6359 drm_mode_crtc_set_gamma_size(&intel_crtc->base, 256);
6360 for (i = 0; i < 256; i++) {
6361 intel_crtc->lut_r[i] = i;
6362 intel_crtc->lut_g[i] = i;
6363 intel_crtc->lut_b[i] = i;
6366 /* Swap pipes & planes for FBC on pre-965 */
6367 intel_crtc->pipe = pipe;
6368 intel_crtc->plane = pipe;
6369 if (IS_MOBILE(dev) && IS_GEN3(dev)) {
6370 DRM_DEBUG_KMS("swapping pipes & planes for FBC\n");
6371 intel_crtc->plane = !pipe;
6374 BUG_ON(pipe >= ARRAY_SIZE(dev_priv->plane_to_crtc_mapping) ||
6375 dev_priv->plane_to_crtc_mapping[intel_crtc->plane] != NULL);
6376 dev_priv->plane_to_crtc_mapping[intel_crtc->plane] = &intel_crtc->base;
6377 dev_priv->pipe_to_crtc_mapping[intel_crtc->pipe] = &intel_crtc->base;
6379 intel_crtc_reset(&intel_crtc->base);
6380 intel_crtc->active = true; /* force the pipe off on setup_init_config */
6381 intel_crtc->bpp = 24; /* default for pre-Ironlake */
6383 if (HAS_PCH_SPLIT(dev)) {
6384 intel_helper_funcs.prepare = ironlake_crtc_prepare;
6385 intel_helper_funcs.commit = ironlake_crtc_commit;
6387 intel_helper_funcs.prepare = i9xx_crtc_prepare;
6388 intel_helper_funcs.commit = i9xx_crtc_commit;
6391 drm_crtc_helper_add(&intel_crtc->base, &intel_helper_funcs);
6393 intel_crtc->busy = false;
6395 setup_timer(&intel_crtc->idle_timer, intel_crtc_idle_timer,
6396 (unsigned long)intel_crtc);
6399 int intel_get_pipe_from_crtc_id(struct drm_device *dev, void *data,
6400 struct drm_file *file)
6402 struct drm_i915_get_pipe_from_crtc_id *pipe_from_crtc_id = data;
6403 struct drm_mode_object *drmmode_obj;
6404 struct intel_crtc *crtc;
6406 if (!drm_core_check_feature(dev, DRIVER_MODESET))
6409 drmmode_obj = drm_mode_object_find(dev, pipe_from_crtc_id->crtc_id,
6410 DRM_MODE_OBJECT_CRTC);
6413 DRM_ERROR("no such CRTC id\n");
6417 crtc = to_intel_crtc(obj_to_crtc(drmmode_obj));
6418 pipe_from_crtc_id->pipe = crtc->pipe;
6423 static int intel_encoder_clones(struct drm_device *dev, int type_mask)
6425 struct intel_encoder *encoder;
6429 list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.head) {
6430 if (type_mask & encoder->clone_mask)
6431 index_mask |= (1 << entry);
6438 static bool has_edp_a(struct drm_device *dev)
6440 struct drm_i915_private *dev_priv = dev->dev_private;
6442 if (!IS_MOBILE(dev))
6445 if ((I915_READ(DP_A) & DP_DETECTED) == 0)
6449 (I915_READ(ILK_DISPLAY_CHICKEN_FUSES) & ILK_eDP_A_DISABLE))
6455 static void intel_setup_outputs(struct drm_device *dev)
6457 struct drm_i915_private *dev_priv = dev->dev_private;
6458 struct intel_encoder *encoder;
6459 bool dpd_is_edp = false;
6462 has_lvds = intel_lvds_init(dev);
6463 if (!has_lvds && !HAS_PCH_SPLIT(dev)) {
6464 /* disable the panel fitter on everything but LVDS */
6465 I915_WRITE(PFIT_CONTROL, 0);
6468 if (HAS_PCH_SPLIT(dev)) {
6469 dpd_is_edp = intel_dpd_is_edp(dev);
6472 intel_dp_init(dev, DP_A);
6474 if (dpd_is_edp && (I915_READ(PCH_DP_D) & DP_DETECTED))
6475 intel_dp_init(dev, PCH_DP_D);
6478 intel_crt_init(dev);
6480 if (IS_HASWELL(dev)) {
6483 /* Haswell uses DDI functions to detect digital outputs */
6484 found = I915_READ(DDI_BUF_CTL_A) & DDI_INIT_DISPLAY_DETECTED;
6485 /* DDI A only supports eDP */
6487 intel_ddi_init(dev, PORT_A);
6489 /* DDI B, C and D detection is indicated by the SFUSE_STRAP
6491 found = I915_READ(SFUSE_STRAP);
6493 if (found & SFUSE_STRAP_DDIB_DETECTED)
6494 intel_ddi_init(dev, PORT_B);
6495 if (found & SFUSE_STRAP_DDIC_DETECTED)
6496 intel_ddi_init(dev, PORT_C);
6497 if (found & SFUSE_STRAP_DDID_DETECTED)
6498 intel_ddi_init(dev, PORT_D);
6499 } else if (HAS_PCH_SPLIT(dev)) {
6502 if (I915_READ(HDMIB) & PORT_DETECTED) {
6503 /* PCH SDVOB multiplex with HDMIB */
6504 found = intel_sdvo_init(dev, PCH_SDVOB, true);
6506 intel_hdmi_init(dev, HDMIB);
6507 if (!found && (I915_READ(PCH_DP_B) & DP_DETECTED))
6508 intel_dp_init(dev, PCH_DP_B);
6511 if (I915_READ(HDMIC) & PORT_DETECTED)
6512 intel_hdmi_init(dev, HDMIC);
6514 if (I915_READ(HDMID) & PORT_DETECTED)
6515 intel_hdmi_init(dev, HDMID);
6517 if (I915_READ(PCH_DP_C) & DP_DETECTED)
6518 intel_dp_init(dev, PCH_DP_C);
6520 if (!dpd_is_edp && (I915_READ(PCH_DP_D) & DP_DETECTED))
6521 intel_dp_init(dev, PCH_DP_D);
6523 } else if (SUPPORTS_DIGITAL_OUTPUTS(dev)) {
6526 if (I915_READ(SDVOB) & SDVO_DETECTED) {
6527 DRM_DEBUG_KMS("probing SDVOB\n");
6528 found = intel_sdvo_init(dev, SDVOB, true);
6529 if (!found && SUPPORTS_INTEGRATED_HDMI(dev)) {
6530 DRM_DEBUG_KMS("probing HDMI on SDVOB\n");
6531 intel_hdmi_init(dev, SDVOB);
6534 if (!found && SUPPORTS_INTEGRATED_DP(dev)) {
6535 DRM_DEBUG_KMS("probing DP_B\n");
6536 intel_dp_init(dev, DP_B);
6540 /* Before G4X SDVOC doesn't have its own detect register */
6542 if (I915_READ(SDVOB) & SDVO_DETECTED) {
6543 DRM_DEBUG_KMS("probing SDVOC\n");
6544 found = intel_sdvo_init(dev, SDVOC, false);
6547 if (!found && (I915_READ(SDVOC) & SDVO_DETECTED)) {
6549 if (SUPPORTS_INTEGRATED_HDMI(dev)) {
6550 DRM_DEBUG_KMS("probing HDMI on SDVOC\n");
6551 intel_hdmi_init(dev, SDVOC);
6553 if (SUPPORTS_INTEGRATED_DP(dev)) {
6554 DRM_DEBUG_KMS("probing DP_C\n");
6555 intel_dp_init(dev, DP_C);
6559 if (SUPPORTS_INTEGRATED_DP(dev) &&
6560 (I915_READ(DP_D) & DP_DETECTED)) {
6561 DRM_DEBUG_KMS("probing DP_D\n");
6562 intel_dp_init(dev, DP_D);
6564 } else if (IS_GEN2(dev))
6565 intel_dvo_init(dev);
6567 if (SUPPORTS_TV(dev))
6570 list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.head) {
6571 encoder->base.possible_crtcs = encoder->crtc_mask;
6572 encoder->base.possible_clones =
6573 intel_encoder_clones(dev, encoder->clone_mask);
6576 /* disable all the possible outputs/crtcs before entering KMS mode */
6577 drm_helper_disable_unused_functions(dev);
6579 if (HAS_PCH_SPLIT(dev))
6580 ironlake_init_pch_refclk(dev);
6583 static void intel_user_framebuffer_destroy(struct drm_framebuffer *fb)
6585 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
6587 drm_framebuffer_cleanup(fb);
6588 drm_gem_object_unreference_unlocked(&intel_fb->obj->base);
6593 static int intel_user_framebuffer_create_handle(struct drm_framebuffer *fb,
6594 struct drm_file *file,
6595 unsigned int *handle)
6597 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
6598 struct drm_i915_gem_object *obj = intel_fb->obj;
6600 return drm_gem_handle_create(file, &obj->base, handle);
6603 static const struct drm_framebuffer_funcs intel_fb_funcs = {
6604 .destroy = intel_user_framebuffer_destroy,
6605 .create_handle = intel_user_framebuffer_create_handle,
6608 int intel_framebuffer_init(struct drm_device *dev,
6609 struct intel_framebuffer *intel_fb,
6610 struct drm_mode_fb_cmd2 *mode_cmd,
6611 struct drm_i915_gem_object *obj)
6615 if (obj->tiling_mode == I915_TILING_Y)
6618 if (mode_cmd->pitches[0] & 63)
6621 switch (mode_cmd->pixel_format) {
6622 case DRM_FORMAT_RGB332:
6623 case DRM_FORMAT_RGB565:
6624 case DRM_FORMAT_XRGB8888:
6625 case DRM_FORMAT_XBGR8888:
6626 case DRM_FORMAT_ARGB8888:
6627 case DRM_FORMAT_XRGB2101010:
6628 case DRM_FORMAT_ARGB2101010:
6629 /* RGB formats are common across chipsets */
6631 case DRM_FORMAT_YUYV:
6632 case DRM_FORMAT_UYVY:
6633 case DRM_FORMAT_YVYU:
6634 case DRM_FORMAT_VYUY:
6637 DRM_DEBUG_KMS("unsupported pixel format %u\n",
6638 mode_cmd->pixel_format);
6642 ret = drm_framebuffer_init(dev, &intel_fb->base, &intel_fb_funcs);
6644 DRM_ERROR("framebuffer init failed %d\n", ret);
6648 drm_helper_mode_fill_fb_struct(&intel_fb->base, mode_cmd);
6649 intel_fb->obj = obj;
6653 static struct drm_framebuffer *
6654 intel_user_framebuffer_create(struct drm_device *dev,
6655 struct drm_file *filp,
6656 struct drm_mode_fb_cmd2 *mode_cmd)
6658 struct drm_i915_gem_object *obj;
6660 obj = to_intel_bo(drm_gem_object_lookup(dev, filp,
6661 mode_cmd->handles[0]));
6662 if (&obj->base == NULL)
6663 return ERR_PTR(-ENOENT);
6665 return intel_framebuffer_create(dev, mode_cmd, obj);
6668 static const struct drm_mode_config_funcs intel_mode_funcs = {
6669 .fb_create = intel_user_framebuffer_create,
6670 .output_poll_changed = intel_fb_output_poll_changed,
6673 /* Set up chip specific display functions */
6674 static void intel_init_display(struct drm_device *dev)
6676 struct drm_i915_private *dev_priv = dev->dev_private;
6678 /* We always want a DPMS function */
6679 if (HAS_PCH_SPLIT(dev)) {
6680 dev_priv->display.dpms = ironlake_crtc_dpms;
6681 dev_priv->display.crtc_mode_set = ironlake_crtc_mode_set;
6682 dev_priv->display.off = ironlake_crtc_off;
6683 dev_priv->display.update_plane = ironlake_update_plane;
6685 dev_priv->display.dpms = i9xx_crtc_dpms;
6686 dev_priv->display.crtc_mode_set = i9xx_crtc_mode_set;
6687 dev_priv->display.off = i9xx_crtc_off;
6688 dev_priv->display.update_plane = i9xx_update_plane;
6691 /* Returns the core display clock speed */
6692 if (IS_VALLEYVIEW(dev))
6693 dev_priv->display.get_display_clock_speed =
6694 valleyview_get_display_clock_speed;
6695 else if (IS_I945G(dev) || (IS_G33(dev) && !IS_PINEVIEW_M(dev)))
6696 dev_priv->display.get_display_clock_speed =
6697 i945_get_display_clock_speed;
6698 else if (IS_I915G(dev))
6699 dev_priv->display.get_display_clock_speed =
6700 i915_get_display_clock_speed;
6701 else if (IS_I945GM(dev) || IS_845G(dev) || IS_PINEVIEW_M(dev))
6702 dev_priv->display.get_display_clock_speed =
6703 i9xx_misc_get_display_clock_speed;
6704 else if (IS_I915GM(dev))
6705 dev_priv->display.get_display_clock_speed =
6706 i915gm_get_display_clock_speed;
6707 else if (IS_I865G(dev))
6708 dev_priv->display.get_display_clock_speed =
6709 i865_get_display_clock_speed;
6710 else if (IS_I85X(dev))
6711 dev_priv->display.get_display_clock_speed =
6712 i855_get_display_clock_speed;
6714 dev_priv->display.get_display_clock_speed =
6715 i830_get_display_clock_speed;
6717 if (HAS_PCH_SPLIT(dev)) {
6719 dev_priv->display.fdi_link_train = ironlake_fdi_link_train;
6720 dev_priv->display.write_eld = ironlake_write_eld;
6721 } else if (IS_GEN6(dev)) {
6722 dev_priv->display.fdi_link_train = gen6_fdi_link_train;
6723 dev_priv->display.write_eld = ironlake_write_eld;
6724 } else if (IS_IVYBRIDGE(dev)) {
6725 /* FIXME: detect B0+ stepping and use auto training */
6726 dev_priv->display.fdi_link_train = ivb_manual_fdi_link_train;
6727 dev_priv->display.write_eld = ironlake_write_eld;
6728 } else if (IS_HASWELL(dev)) {
6729 dev_priv->display.fdi_link_train = hsw_fdi_link_train;
6730 dev_priv->display.write_eld = ironlake_write_eld;
6732 dev_priv->display.update_wm = NULL;
6733 } else if (IS_VALLEYVIEW(dev)) {
6734 dev_priv->display.force_wake_get = vlv_force_wake_get;
6735 dev_priv->display.force_wake_put = vlv_force_wake_put;
6736 } else if (IS_G4X(dev)) {
6737 dev_priv->display.write_eld = g4x_write_eld;
6740 /* Default just returns -ENODEV to indicate unsupported */
6741 dev_priv->display.queue_flip = intel_default_queue_flip;
6743 switch (INTEL_INFO(dev)->gen) {
6745 dev_priv->display.queue_flip = intel_gen2_queue_flip;
6749 dev_priv->display.queue_flip = intel_gen3_queue_flip;
6754 dev_priv->display.queue_flip = intel_gen4_queue_flip;
6758 dev_priv->display.queue_flip = intel_gen6_queue_flip;
6761 dev_priv->display.queue_flip = intel_gen7_queue_flip;
6767 * Some BIOSes insist on assuming the GPU's pipe A is enabled at suspend,
6768 * resume, or other times. This quirk makes sure that's the case for
6771 static void quirk_pipea_force(struct drm_device *dev)
6773 struct drm_i915_private *dev_priv = dev->dev_private;
6775 dev_priv->quirks |= QUIRK_PIPEA_FORCE;
6776 DRM_INFO("applying pipe a force quirk\n");
6780 * Some machines (Lenovo U160) do not work with SSC on LVDS for some reason
6782 static void quirk_ssc_force_disable(struct drm_device *dev)
6784 struct drm_i915_private *dev_priv = dev->dev_private;
6785 dev_priv->quirks |= QUIRK_LVDS_SSC_DISABLE;
6786 DRM_INFO("applying lvds SSC disable quirk\n");
6790 * A machine (e.g. Acer Aspire 5734Z) may need to invert the panel backlight
6793 static void quirk_invert_brightness(struct drm_device *dev)
6795 struct drm_i915_private *dev_priv = dev->dev_private;
6796 dev_priv->quirks |= QUIRK_INVERT_BRIGHTNESS;
6797 DRM_INFO("applying inverted panel brightness quirk\n");
6800 struct intel_quirk {
6802 int subsystem_vendor;
6803 int subsystem_device;
6804 void (*hook)(struct drm_device *dev);
6807 static struct intel_quirk intel_quirks[] = {
6808 /* HP Mini needs pipe A force quirk (LP: #322104) */
6809 { 0x27ae, 0x103c, 0x361a, quirk_pipea_force },
6811 /* Thinkpad R31 needs pipe A force quirk */
6812 { 0x3577, 0x1014, 0x0505, quirk_pipea_force },
6813 /* Toshiba Protege R-205, S-209 needs pipe A force quirk */
6814 { 0x2592, 0x1179, 0x0001, quirk_pipea_force },
6816 /* ThinkPad X30 needs pipe A force quirk (LP: #304614) */
6817 { 0x3577, 0x1014, 0x0513, quirk_pipea_force },
6818 /* ThinkPad X40 needs pipe A force quirk */
6820 /* ThinkPad T60 needs pipe A force quirk (bug #16494) */
6821 { 0x2782, 0x17aa, 0x201a, quirk_pipea_force },
6823 /* 855 & before need to leave pipe A & dpll A up */
6824 { 0x3582, PCI_ANY_ID, PCI_ANY_ID, quirk_pipea_force },
6825 { 0x2562, PCI_ANY_ID, PCI_ANY_ID, quirk_pipea_force },
6827 /* Lenovo U160 cannot use SSC on LVDS */
6828 { 0x0046, 0x17aa, 0x3920, quirk_ssc_force_disable },
6830 /* Sony Vaio Y cannot use SSC on LVDS */
6831 { 0x0046, 0x104d, 0x9076, quirk_ssc_force_disable },
6833 /* Acer Aspire 5734Z must invert backlight brightness */
6834 { 0x2a42, 0x1025, 0x0459, quirk_invert_brightness },
6837 static void intel_init_quirks(struct drm_device *dev)
6839 struct pci_dev *d = dev->pdev;
6842 for (i = 0; i < ARRAY_SIZE(intel_quirks); i++) {
6843 struct intel_quirk *q = &intel_quirks[i];
6845 if (d->device == q->device &&
6846 (d->subsystem_vendor == q->subsystem_vendor ||
6847 q->subsystem_vendor == PCI_ANY_ID) &&
6848 (d->subsystem_device == q->subsystem_device ||
6849 q->subsystem_device == PCI_ANY_ID))
6854 /* Disable the VGA plane that we never use */
6855 static void i915_disable_vga(struct drm_device *dev)
6857 struct drm_i915_private *dev_priv = dev->dev_private;
6861 if (HAS_PCH_SPLIT(dev))
6862 vga_reg = CPU_VGACNTRL;
6866 vga_get_uninterruptible(dev->pdev, VGA_RSRC_LEGACY_IO);
6867 outb(SR01, VGA_SR_INDEX);
6868 sr1 = inb(VGA_SR_DATA);
6869 outb(sr1 | 1<<5, VGA_SR_DATA);
6870 vga_put(dev->pdev, VGA_RSRC_LEGACY_IO);
6873 I915_WRITE(vga_reg, VGA_DISP_DISABLE);
6874 POSTING_READ(vga_reg);
6877 static void ivb_pch_pwm_override(struct drm_device *dev)
6879 struct drm_i915_private *dev_priv = dev->dev_private;
6882 * IVB has CPU eDP backlight regs too, set things up to let the
6883 * PCH regs control the backlight
6885 I915_WRITE(BLC_PWM_CPU_CTL2, PWM_ENABLE);
6886 I915_WRITE(BLC_PWM_CPU_CTL, 0);
6887 I915_WRITE(BLC_PWM_PCH_CTL1, PWM_ENABLE | (1<<30));
6890 void intel_modeset_init_hw(struct drm_device *dev)
6892 struct drm_i915_private *dev_priv = dev->dev_private;
6894 intel_init_clock_gating(dev);
6896 if (IS_IRONLAKE_M(dev)) {
6897 ironlake_enable_drps(dev);
6898 ironlake_enable_rc6(dev);
6899 intel_init_emon(dev);
6902 if ((IS_GEN6(dev) || IS_GEN7(dev)) && !IS_VALLEYVIEW(dev)) {
6903 gen6_enable_rps(dev_priv);
6904 gen6_update_ring_freq(dev_priv);
6907 if (IS_IVYBRIDGE(dev))
6908 ivb_pch_pwm_override(dev);
6911 void intel_modeset_init(struct drm_device *dev)
6913 struct drm_i915_private *dev_priv = dev->dev_private;
6916 drm_mode_config_init(dev);
6918 dev->mode_config.min_width = 0;
6919 dev->mode_config.min_height = 0;
6921 dev->mode_config.preferred_depth = 24;
6922 dev->mode_config.prefer_shadow = 1;
6924 dev->mode_config.funcs = (void *)&intel_mode_funcs;
6926 intel_init_quirks(dev);
6930 intel_prepare_ddi(dev);
6932 intel_init_display(dev);
6935 dev->mode_config.max_width = 2048;
6936 dev->mode_config.max_height = 2048;
6937 } else if (IS_GEN3(dev)) {
6938 dev->mode_config.max_width = 4096;
6939 dev->mode_config.max_height = 4096;
6941 dev->mode_config.max_width = 8192;
6942 dev->mode_config.max_height = 8192;
6944 dev->mode_config.fb_base = dev->agp->base;
6946 DRM_DEBUG_KMS("%d display pipe%s available.\n",
6947 dev_priv->num_pipe, dev_priv->num_pipe > 1 ? "s" : "");
6949 for (i = 0; i < dev_priv->num_pipe; i++) {
6950 intel_crtc_init(dev, i);
6951 ret = intel_plane_init(dev, i);
6953 DRM_DEBUG_KMS("plane %d init failed: %d\n", i, ret);
6956 intel_pch_pll_init(dev);
6958 /* Just disable it once at startup */
6959 i915_disable_vga(dev);
6960 intel_setup_outputs(dev);
6962 INIT_WORK(&dev_priv->idle_work, intel_idle_update);
6963 setup_timer(&dev_priv->idle_timer, intel_gpu_idle_timer,
6964 (unsigned long)dev);
6967 void intel_modeset_gem_init(struct drm_device *dev)
6969 intel_modeset_init_hw(dev);
6971 intel_setup_overlay(dev);
6974 void intel_modeset_cleanup(struct drm_device *dev)
6976 struct drm_i915_private *dev_priv = dev->dev_private;
6977 struct drm_crtc *crtc;
6978 struct intel_crtc *intel_crtc;
6980 drm_kms_helper_poll_fini(dev);
6981 mutex_lock(&dev->struct_mutex);
6983 intel_unregister_dsm_handler();
6986 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
6987 /* Skip inactive CRTCs */
6991 intel_crtc = to_intel_crtc(crtc);
6992 intel_increase_pllclock(crtc);
6995 intel_disable_fbc(dev);
6997 if (IS_IRONLAKE_M(dev))
6998 ironlake_disable_drps(dev);
6999 if ((IS_GEN6(dev) || IS_GEN7(dev)) && !IS_VALLEYVIEW(dev))
7000 gen6_disable_rps(dev);
7002 if (IS_IRONLAKE_M(dev))
7003 ironlake_disable_rc6(dev);
7005 if (IS_VALLEYVIEW(dev))
7008 mutex_unlock(&dev->struct_mutex);
7010 /* Disable the irq before mode object teardown, for the irq might
7011 * enqueue unpin/hotplug work. */
7012 drm_irq_uninstall(dev);
7013 cancel_work_sync(&dev_priv->hotplug_work);
7014 cancel_work_sync(&dev_priv->rps_work);
7016 /* flush any delayed tasks or pending work */
7017 flush_scheduled_work();
7019 /* Shut off idle work before the crtcs get freed. */
7020 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
7021 intel_crtc = to_intel_crtc(crtc);
7022 del_timer_sync(&intel_crtc->idle_timer);
7024 del_timer_sync(&dev_priv->idle_timer);
7025 cancel_work_sync(&dev_priv->idle_work);
7027 drm_mode_config_cleanup(dev);
7031 * Return which encoder is currently attached for connector.
7033 struct drm_encoder *intel_best_encoder(struct drm_connector *connector)
7035 return &intel_attached_encoder(connector)->base;
7038 void intel_connector_attach_encoder(struct intel_connector *connector,
7039 struct intel_encoder *encoder)
7041 connector->encoder = encoder;
7042 drm_mode_connector_attach_encoder(&connector->base,
7047 * set vga decode state - true == enable VGA decode
7049 int intel_modeset_vga_set_state(struct drm_device *dev, bool state)
7051 struct drm_i915_private *dev_priv = dev->dev_private;
7054 pci_read_config_word(dev_priv->bridge_dev, INTEL_GMCH_CTRL, &gmch_ctrl);
7056 gmch_ctrl &= ~INTEL_GMCH_VGA_DISABLE;
7058 gmch_ctrl |= INTEL_GMCH_VGA_DISABLE;
7059 pci_write_config_word(dev_priv->bridge_dev, INTEL_GMCH_CTRL, gmch_ctrl);
7063 #ifdef CONFIG_DEBUG_FS
7064 #include <linux/seq_file.h>
7066 struct intel_display_error_state {
7067 struct intel_cursor_error_state {
7074 struct intel_pipe_error_state {
7086 struct intel_plane_error_state {
7097 struct intel_display_error_state *
7098 intel_display_capture_error_state(struct drm_device *dev)
7100 drm_i915_private_t *dev_priv = dev->dev_private;
7101 struct intel_display_error_state *error;
7104 error = kmalloc(sizeof(*error), GFP_ATOMIC);
7108 for (i = 0; i < 2; i++) {
7109 error->cursor[i].control = I915_READ(CURCNTR(i));
7110 error->cursor[i].position = I915_READ(CURPOS(i));
7111 error->cursor[i].base = I915_READ(CURBASE(i));
7113 error->plane[i].control = I915_READ(DSPCNTR(i));
7114 error->plane[i].stride = I915_READ(DSPSTRIDE(i));
7115 error->plane[i].size = I915_READ(DSPSIZE(i));
7116 error->plane[i].pos = I915_READ(DSPPOS(i));
7117 error->plane[i].addr = I915_READ(DSPADDR(i));
7118 if (INTEL_INFO(dev)->gen >= 4) {
7119 error->plane[i].surface = I915_READ(DSPSURF(i));
7120 error->plane[i].tile_offset = I915_READ(DSPTILEOFF(i));
7123 error->pipe[i].conf = I915_READ(PIPECONF(i));
7124 error->pipe[i].source = I915_READ(PIPESRC(i));
7125 error->pipe[i].htotal = I915_READ(HTOTAL(i));
7126 error->pipe[i].hblank = I915_READ(HBLANK(i));
7127 error->pipe[i].hsync = I915_READ(HSYNC(i));
7128 error->pipe[i].vtotal = I915_READ(VTOTAL(i));
7129 error->pipe[i].vblank = I915_READ(VBLANK(i));
7130 error->pipe[i].vsync = I915_READ(VSYNC(i));
7137 intel_display_print_error_state(struct seq_file *m,
7138 struct drm_device *dev,
7139 struct intel_display_error_state *error)
7143 for (i = 0; i < 2; i++) {
7144 seq_printf(m, "Pipe [%d]:\n", i);
7145 seq_printf(m, " CONF: %08x\n", error->pipe[i].conf);
7146 seq_printf(m, " SRC: %08x\n", error->pipe[i].source);
7147 seq_printf(m, " HTOTAL: %08x\n", error->pipe[i].htotal);
7148 seq_printf(m, " HBLANK: %08x\n", error->pipe[i].hblank);
7149 seq_printf(m, " HSYNC: %08x\n", error->pipe[i].hsync);
7150 seq_printf(m, " VTOTAL: %08x\n", error->pipe[i].vtotal);
7151 seq_printf(m, " VBLANK: %08x\n", error->pipe[i].vblank);
7152 seq_printf(m, " VSYNC: %08x\n", error->pipe[i].vsync);
7154 seq_printf(m, "Plane [%d]:\n", i);
7155 seq_printf(m, " CNTR: %08x\n", error->plane[i].control);
7156 seq_printf(m, " STRIDE: %08x\n", error->plane[i].stride);
7157 seq_printf(m, " SIZE: %08x\n", error->plane[i].size);
7158 seq_printf(m, " POS: %08x\n", error->plane[i].pos);
7159 seq_printf(m, " ADDR: %08x\n", error->plane[i].addr);
7160 if (INTEL_INFO(dev)->gen >= 4) {
7161 seq_printf(m, " SURF: %08x\n", error->plane[i].surface);
7162 seq_printf(m, " TILEOFF: %08x\n", error->plane[i].tile_offset);
7165 seq_printf(m, "Cursor [%d]:\n", i);
7166 seq_printf(m, " CNTR: %08x\n", error->cursor[i].control);
7167 seq_printf(m, " POS: %08x\n", error->cursor[i].position);
7168 seq_printf(m, " BASE: %08x\n", error->cursor[i].base);