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 intel_dpio_write(struct drm_i915_private *dev_priv, int reg,
392 spin_lock_irqsave(&dev_priv->dpio_lock, flags);
393 if (wait_for_atomic_us((I915_READ(DPIO_PKT) & DPIO_BUSY) == 0, 100)) {
394 DRM_ERROR("DPIO idle wait timed out\n");
398 I915_WRITE(DPIO_DATA, val);
399 I915_WRITE(DPIO_REG, reg);
400 I915_WRITE(DPIO_PKT, DPIO_RID | DPIO_OP_WRITE | DPIO_PORTID |
402 if (wait_for_atomic_us((I915_READ(DPIO_PKT) & DPIO_BUSY) == 0, 100))
403 DRM_ERROR("DPIO write wait timed out\n");
406 spin_unlock_irqrestore(&dev_priv->dpio_lock, flags);
409 static void vlv_init_dpio(struct drm_device *dev)
411 struct drm_i915_private *dev_priv = dev->dev_private;
413 /* Reset the DPIO config */
414 I915_WRITE(DPIO_CTL, 0);
415 POSTING_READ(DPIO_CTL);
416 I915_WRITE(DPIO_CTL, 1);
417 POSTING_READ(DPIO_CTL);
420 static int intel_dual_link_lvds_callback(const struct dmi_system_id *id)
422 DRM_INFO("Forcing lvds to dual link mode on %s\n", id->ident);
426 static const struct dmi_system_id intel_dual_link_lvds[] = {
428 .callback = intel_dual_link_lvds_callback,
429 .ident = "Apple MacBook Pro (Core i5/i7 Series)",
431 DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
432 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro8,2"),
435 { } /* terminating entry */
438 static bool is_dual_link_lvds(struct drm_i915_private *dev_priv,
443 /* use the module option value if specified */
444 if (i915_lvds_channel_mode > 0)
445 return i915_lvds_channel_mode == 2;
447 if (dmi_check_system(intel_dual_link_lvds))
450 if (dev_priv->lvds_val)
451 val = dev_priv->lvds_val;
453 /* BIOS should set the proper LVDS register value at boot, but
454 * in reality, it doesn't set the value when the lid is closed;
455 * we need to check "the value to be set" in VBT when LVDS
456 * register is uninitialized.
458 val = I915_READ(reg);
459 if (!(val & ~LVDS_DETECTED))
460 val = dev_priv->bios_lvds_val;
461 dev_priv->lvds_val = val;
463 return (val & LVDS_CLKB_POWER_MASK) == LVDS_CLKB_POWER_UP;
466 static const intel_limit_t *intel_ironlake_limit(struct drm_crtc *crtc,
469 struct drm_device *dev = crtc->dev;
470 struct drm_i915_private *dev_priv = dev->dev_private;
471 const intel_limit_t *limit;
473 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
474 if (is_dual_link_lvds(dev_priv, PCH_LVDS)) {
475 /* LVDS dual channel */
476 if (refclk == 100000)
477 limit = &intel_limits_ironlake_dual_lvds_100m;
479 limit = &intel_limits_ironlake_dual_lvds;
481 if (refclk == 100000)
482 limit = &intel_limits_ironlake_single_lvds_100m;
484 limit = &intel_limits_ironlake_single_lvds;
486 } else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT) ||
488 limit = &intel_limits_ironlake_display_port;
490 limit = &intel_limits_ironlake_dac;
495 static const intel_limit_t *intel_g4x_limit(struct drm_crtc *crtc)
497 struct drm_device *dev = crtc->dev;
498 struct drm_i915_private *dev_priv = dev->dev_private;
499 const intel_limit_t *limit;
501 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
502 if (is_dual_link_lvds(dev_priv, LVDS))
503 /* LVDS with dual channel */
504 limit = &intel_limits_g4x_dual_channel_lvds;
506 /* LVDS with dual channel */
507 limit = &intel_limits_g4x_single_channel_lvds;
508 } else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI) ||
509 intel_pipe_has_type(crtc, INTEL_OUTPUT_ANALOG)) {
510 limit = &intel_limits_g4x_hdmi;
511 } else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_SDVO)) {
512 limit = &intel_limits_g4x_sdvo;
513 } else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT)) {
514 limit = &intel_limits_g4x_display_port;
515 } else /* The option is for other outputs */
516 limit = &intel_limits_i9xx_sdvo;
521 static const intel_limit_t *intel_limit(struct drm_crtc *crtc, int refclk)
523 struct drm_device *dev = crtc->dev;
524 const intel_limit_t *limit;
526 if (HAS_PCH_SPLIT(dev))
527 limit = intel_ironlake_limit(crtc, refclk);
528 else if (IS_G4X(dev)) {
529 limit = intel_g4x_limit(crtc);
530 } else if (IS_PINEVIEW(dev)) {
531 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
532 limit = &intel_limits_pineview_lvds;
534 limit = &intel_limits_pineview_sdvo;
535 } else if (!IS_GEN2(dev)) {
536 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
537 limit = &intel_limits_i9xx_lvds;
539 limit = &intel_limits_i9xx_sdvo;
541 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
542 limit = &intel_limits_i8xx_lvds;
544 limit = &intel_limits_i8xx_dvo;
549 /* m1 is reserved as 0 in Pineview, n is a ring counter */
550 static void pineview_clock(int refclk, intel_clock_t *clock)
552 clock->m = clock->m2 + 2;
553 clock->p = clock->p1 * clock->p2;
554 clock->vco = refclk * clock->m / clock->n;
555 clock->dot = clock->vco / clock->p;
558 static void intel_clock(struct drm_device *dev, int refclk, intel_clock_t *clock)
560 if (IS_PINEVIEW(dev)) {
561 pineview_clock(refclk, clock);
564 clock->m = 5 * (clock->m1 + 2) + (clock->m2 + 2);
565 clock->p = clock->p1 * clock->p2;
566 clock->vco = refclk * clock->m / (clock->n + 2);
567 clock->dot = clock->vco / clock->p;
571 * Returns whether any output on the specified pipe is of the specified type
573 bool intel_pipe_has_type(struct drm_crtc *crtc, int type)
575 struct drm_device *dev = crtc->dev;
576 struct drm_mode_config *mode_config = &dev->mode_config;
577 struct intel_encoder *encoder;
579 list_for_each_entry(encoder, &mode_config->encoder_list, base.head)
580 if (encoder->base.crtc == crtc && encoder->type == type)
586 #define INTELPllInvalid(s) do { /* DRM_DEBUG(s); */ return false; } while (0)
588 * Returns whether the given set of divisors are valid for a given refclk with
589 * the given connectors.
592 static bool intel_PLL_is_valid(struct drm_device *dev,
593 const intel_limit_t *limit,
594 const intel_clock_t *clock)
596 if (clock->p1 < limit->p1.min || limit->p1.max < clock->p1)
597 INTELPllInvalid("p1 out of range\n");
598 if (clock->p < limit->p.min || limit->p.max < clock->p)
599 INTELPllInvalid("p out of range\n");
600 if (clock->m2 < limit->m2.min || limit->m2.max < clock->m2)
601 INTELPllInvalid("m2 out of range\n");
602 if (clock->m1 < limit->m1.min || limit->m1.max < clock->m1)
603 INTELPllInvalid("m1 out of range\n");
604 if (clock->m1 <= clock->m2 && !IS_PINEVIEW(dev))
605 INTELPllInvalid("m1 <= m2\n");
606 if (clock->m < limit->m.min || limit->m.max < clock->m)
607 INTELPllInvalid("m out of range\n");
608 if (clock->n < limit->n.min || limit->n.max < clock->n)
609 INTELPllInvalid("n out of range\n");
610 if (clock->vco < limit->vco.min || limit->vco.max < clock->vco)
611 INTELPllInvalid("vco out of range\n");
612 /* XXX: We may need to be checking "Dot clock" depending on the multiplier,
613 * connector, etc., rather than just a single range.
615 if (clock->dot < limit->dot.min || limit->dot.max < clock->dot)
616 INTELPllInvalid("dot out of range\n");
622 intel_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
623 int target, int refclk, intel_clock_t *match_clock,
624 intel_clock_t *best_clock)
627 struct drm_device *dev = crtc->dev;
628 struct drm_i915_private *dev_priv = dev->dev_private;
632 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) &&
633 (I915_READ(LVDS)) != 0) {
635 * For LVDS, if the panel is on, just rely on its current
636 * settings for dual-channel. We haven't figured out how to
637 * reliably set up different single/dual channel state, if we
640 if (is_dual_link_lvds(dev_priv, LVDS))
641 clock.p2 = limit->p2.p2_fast;
643 clock.p2 = limit->p2.p2_slow;
645 if (target < limit->p2.dot_limit)
646 clock.p2 = limit->p2.p2_slow;
648 clock.p2 = limit->p2.p2_fast;
651 memset(best_clock, 0, sizeof(*best_clock));
653 for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max;
655 for (clock.m2 = limit->m2.min;
656 clock.m2 <= limit->m2.max; clock.m2++) {
657 /* m1 is always 0 in Pineview */
658 if (clock.m2 >= clock.m1 && !IS_PINEVIEW(dev))
660 for (clock.n = limit->n.min;
661 clock.n <= limit->n.max; clock.n++) {
662 for (clock.p1 = limit->p1.min;
663 clock.p1 <= limit->p1.max; clock.p1++) {
666 intel_clock(dev, refclk, &clock);
667 if (!intel_PLL_is_valid(dev, limit,
671 clock.p != match_clock->p)
674 this_err = abs(clock.dot - target);
675 if (this_err < err) {
684 return (err != target);
688 intel_g4x_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
689 int target, int refclk, intel_clock_t *match_clock,
690 intel_clock_t *best_clock)
692 struct drm_device *dev = crtc->dev;
693 struct drm_i915_private *dev_priv = dev->dev_private;
697 /* approximately equals target * 0.00585 */
698 int err_most = (target >> 8) + (target >> 9);
701 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
704 if (HAS_PCH_SPLIT(dev))
708 if ((I915_READ(lvds_reg) & LVDS_CLKB_POWER_MASK) ==
710 clock.p2 = limit->p2.p2_fast;
712 clock.p2 = limit->p2.p2_slow;
714 if (target < limit->p2.dot_limit)
715 clock.p2 = limit->p2.p2_slow;
717 clock.p2 = limit->p2.p2_fast;
720 memset(best_clock, 0, sizeof(*best_clock));
721 max_n = limit->n.max;
722 /* based on hardware requirement, prefer smaller n to precision */
723 for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) {
724 /* based on hardware requirement, prefere larger m1,m2 */
725 for (clock.m1 = limit->m1.max;
726 clock.m1 >= limit->m1.min; clock.m1--) {
727 for (clock.m2 = limit->m2.max;
728 clock.m2 >= limit->m2.min; clock.m2--) {
729 for (clock.p1 = limit->p1.max;
730 clock.p1 >= limit->p1.min; clock.p1--) {
733 intel_clock(dev, refclk, &clock);
734 if (!intel_PLL_is_valid(dev, limit,
738 clock.p != match_clock->p)
741 this_err = abs(clock.dot - target);
742 if (this_err < err_most) {
756 intel_find_pll_ironlake_dp(const intel_limit_t *limit, struct drm_crtc *crtc,
757 int target, int refclk, intel_clock_t *match_clock,
758 intel_clock_t *best_clock)
760 struct drm_device *dev = crtc->dev;
763 if (target < 200000) {
776 intel_clock(dev, refclk, &clock);
777 memcpy(best_clock, &clock, sizeof(intel_clock_t));
781 /* DisplayPort has only two frequencies, 162MHz and 270MHz */
783 intel_find_pll_g4x_dp(const intel_limit_t *limit, struct drm_crtc *crtc,
784 int target, int refclk, intel_clock_t *match_clock,
785 intel_clock_t *best_clock)
788 if (target < 200000) {
801 clock.m = 5 * (clock.m1 + 2) + (clock.m2 + 2);
802 clock.p = (clock.p1 * clock.p2);
803 clock.dot = 96000 * clock.m / (clock.n + 2) / clock.p;
805 memcpy(best_clock, &clock, sizeof(intel_clock_t));
810 * intel_wait_for_vblank - wait for vblank on a given pipe
812 * @pipe: pipe to wait for
814 * Wait for vblank to occur on a given pipe. Needed for various bits of
817 void intel_wait_for_vblank(struct drm_device *dev, int pipe)
819 struct drm_i915_private *dev_priv = dev->dev_private;
820 int pipestat_reg = PIPESTAT(pipe);
822 /* Clear existing vblank status. Note this will clear any other
823 * sticky status fields as well.
825 * This races with i915_driver_irq_handler() with the result
826 * that either function could miss a vblank event. Here it is not
827 * fatal, as we will either wait upon the next vblank interrupt or
828 * timeout. Generally speaking intel_wait_for_vblank() is only
829 * called during modeset at which time the GPU should be idle and
830 * should *not* be performing page flips and thus not waiting on
832 * Currently, the result of us stealing a vblank from the irq
833 * handler is that a single frame will be skipped during swapbuffers.
835 I915_WRITE(pipestat_reg,
836 I915_READ(pipestat_reg) | PIPE_VBLANK_INTERRUPT_STATUS);
838 /* Wait for vblank interrupt bit to set */
839 if (wait_for(I915_READ(pipestat_reg) &
840 PIPE_VBLANK_INTERRUPT_STATUS,
842 DRM_DEBUG_KMS("vblank wait timed out\n");
846 * intel_wait_for_pipe_off - wait for pipe to turn off
848 * @pipe: pipe to wait for
850 * After disabling a pipe, we can't wait for vblank in the usual way,
851 * spinning on the vblank interrupt status bit, since we won't actually
852 * see an interrupt when the pipe is disabled.
855 * wait for the pipe register state bit to turn off
858 * wait for the display line value to settle (it usually
859 * ends up stopping at the start of the next frame).
862 void intel_wait_for_pipe_off(struct drm_device *dev, int pipe)
864 struct drm_i915_private *dev_priv = dev->dev_private;
866 if (INTEL_INFO(dev)->gen >= 4) {
867 int reg = PIPECONF(pipe);
869 /* Wait for the Pipe State to go off */
870 if (wait_for((I915_READ(reg) & I965_PIPECONF_ACTIVE) == 0,
872 DRM_DEBUG_KMS("pipe_off wait timed out\n");
875 int reg = PIPEDSL(pipe);
876 unsigned long timeout = jiffies + msecs_to_jiffies(100);
878 /* Wait for the display line to settle */
880 last_line = I915_READ(reg) & DSL_LINEMASK;
882 } while (((I915_READ(reg) & DSL_LINEMASK) != last_line) &&
883 time_after(timeout, jiffies));
884 if (time_after(jiffies, timeout))
885 DRM_DEBUG_KMS("pipe_off wait timed out\n");
889 static const char *state_string(bool enabled)
891 return enabled ? "on" : "off";
894 /* Only for pre-ILK configs */
895 static void assert_pll(struct drm_i915_private *dev_priv,
896 enum pipe pipe, bool state)
903 val = I915_READ(reg);
904 cur_state = !!(val & DPLL_VCO_ENABLE);
905 WARN(cur_state != state,
906 "PLL state assertion failure (expected %s, current %s)\n",
907 state_string(state), state_string(cur_state));
909 #define assert_pll_enabled(d, p) assert_pll(d, p, true)
910 #define assert_pll_disabled(d, p) assert_pll(d, p, false)
913 static void assert_pch_pll(struct drm_i915_private *dev_priv,
914 enum pipe pipe, bool state)
920 if (HAS_PCH_CPT(dev_priv->dev)) {
923 pch_dpll = I915_READ(PCH_DPLL_SEL);
925 /* Make sure the selected PLL is enabled to the transcoder */
926 WARN(!((pch_dpll >> (4 * pipe)) & 8),
927 "transcoder %d PLL not enabled\n", pipe);
929 /* Convert the transcoder pipe number to a pll pipe number */
930 pipe = (pch_dpll >> (4 * pipe)) & 1;
933 reg = PCH_DPLL(pipe);
934 val = I915_READ(reg);
935 cur_state = !!(val & DPLL_VCO_ENABLE);
936 WARN(cur_state != state,
937 "PCH PLL state assertion failure (expected %s, current %s)\n",
938 state_string(state), state_string(cur_state));
940 #define assert_pch_pll_enabled(d, p) assert_pch_pll(d, p, true)
941 #define assert_pch_pll_disabled(d, p) assert_pch_pll(d, p, false)
943 static void assert_fdi_tx(struct drm_i915_private *dev_priv,
944 enum pipe pipe, bool state)
950 reg = FDI_TX_CTL(pipe);
951 val = I915_READ(reg);
952 cur_state = !!(val & FDI_TX_ENABLE);
953 WARN(cur_state != state,
954 "FDI TX state assertion failure (expected %s, current %s)\n",
955 state_string(state), state_string(cur_state));
957 #define assert_fdi_tx_enabled(d, p) assert_fdi_tx(d, p, true)
958 #define assert_fdi_tx_disabled(d, p) assert_fdi_tx(d, p, false)
960 static void assert_fdi_rx(struct drm_i915_private *dev_priv,
961 enum pipe pipe, bool state)
967 reg = FDI_RX_CTL(pipe);
968 val = I915_READ(reg);
969 cur_state = !!(val & FDI_RX_ENABLE);
970 WARN(cur_state != state,
971 "FDI RX state assertion failure (expected %s, current %s)\n",
972 state_string(state), state_string(cur_state));
974 #define assert_fdi_rx_enabled(d, p) assert_fdi_rx(d, p, true)
975 #define assert_fdi_rx_disabled(d, p) assert_fdi_rx(d, p, false)
977 static void assert_fdi_tx_pll_enabled(struct drm_i915_private *dev_priv,
983 /* ILK FDI PLL is always enabled */
984 if (dev_priv->info->gen == 5)
987 reg = FDI_TX_CTL(pipe);
988 val = I915_READ(reg);
989 WARN(!(val & FDI_TX_PLL_ENABLE), "FDI TX PLL assertion failure, should be active but is disabled\n");
992 static void assert_fdi_rx_pll_enabled(struct drm_i915_private *dev_priv,
998 reg = FDI_RX_CTL(pipe);
999 val = I915_READ(reg);
1000 WARN(!(val & FDI_RX_PLL_ENABLE), "FDI RX PLL assertion failure, should be active but is disabled\n");
1003 static void assert_panel_unlocked(struct drm_i915_private *dev_priv,
1006 int pp_reg, lvds_reg;
1008 enum pipe panel_pipe = PIPE_A;
1011 if (HAS_PCH_SPLIT(dev_priv->dev)) {
1012 pp_reg = PCH_PP_CONTROL;
1013 lvds_reg = PCH_LVDS;
1015 pp_reg = PP_CONTROL;
1019 val = I915_READ(pp_reg);
1020 if (!(val & PANEL_POWER_ON) ||
1021 ((val & PANEL_UNLOCK_REGS) == PANEL_UNLOCK_REGS))
1024 if (I915_READ(lvds_reg) & LVDS_PIPEB_SELECT)
1025 panel_pipe = PIPE_B;
1027 WARN(panel_pipe == pipe && locked,
1028 "panel assertion failure, pipe %c regs locked\n",
1032 void assert_pipe(struct drm_i915_private *dev_priv,
1033 enum pipe pipe, bool state)
1039 /* if we need the pipe A quirk it must be always on */
1040 if (pipe == PIPE_A && dev_priv->quirks & QUIRK_PIPEA_FORCE)
1043 reg = PIPECONF(pipe);
1044 val = I915_READ(reg);
1045 cur_state = !!(val & PIPECONF_ENABLE);
1046 WARN(cur_state != state,
1047 "pipe %c assertion failure (expected %s, current %s)\n",
1048 pipe_name(pipe), state_string(state), state_string(cur_state));
1051 static void assert_plane(struct drm_i915_private *dev_priv,
1052 enum plane plane, bool state)
1058 reg = DSPCNTR(plane);
1059 val = I915_READ(reg);
1060 cur_state = !!(val & DISPLAY_PLANE_ENABLE);
1061 WARN(cur_state != state,
1062 "plane %c assertion failure (expected %s, current %s)\n",
1063 plane_name(plane), state_string(state), state_string(cur_state));
1066 #define assert_plane_enabled(d, p) assert_plane(d, p, true)
1067 #define assert_plane_disabled(d, p) assert_plane(d, p, false)
1069 static void assert_planes_disabled(struct drm_i915_private *dev_priv,
1076 /* Planes are fixed to pipes on ILK+ */
1077 if (HAS_PCH_SPLIT(dev_priv->dev)) {
1078 reg = DSPCNTR(pipe);
1079 val = I915_READ(reg);
1080 WARN((val & DISPLAY_PLANE_ENABLE),
1081 "plane %c assertion failure, should be disabled but not\n",
1086 /* Need to check both planes against the pipe */
1087 for (i = 0; i < 2; i++) {
1089 val = I915_READ(reg);
1090 cur_pipe = (val & DISPPLANE_SEL_PIPE_MASK) >>
1091 DISPPLANE_SEL_PIPE_SHIFT;
1092 WARN((val & DISPLAY_PLANE_ENABLE) && pipe == cur_pipe,
1093 "plane %c assertion failure, should be off on pipe %c but is still active\n",
1094 plane_name(i), pipe_name(pipe));
1098 static void assert_pch_refclk_enabled(struct drm_i915_private *dev_priv)
1103 val = I915_READ(PCH_DREF_CONTROL);
1104 enabled = !!(val & (DREF_SSC_SOURCE_MASK | DREF_NONSPREAD_SOURCE_MASK |
1105 DREF_SUPERSPREAD_SOURCE_MASK));
1106 WARN(!enabled, "PCH refclk assertion failure, should be active but is disabled\n");
1109 static void assert_transcoder_disabled(struct drm_i915_private *dev_priv,
1116 reg = TRANSCONF(pipe);
1117 val = I915_READ(reg);
1118 enabled = !!(val & TRANS_ENABLE);
1120 "transcoder assertion failed, should be off on pipe %c but is still active\n",
1124 static bool dp_pipe_enabled(struct drm_i915_private *dev_priv,
1125 enum pipe pipe, u32 port_sel, u32 val)
1127 if ((val & DP_PORT_EN) == 0)
1130 if (HAS_PCH_CPT(dev_priv->dev)) {
1131 u32 trans_dp_ctl_reg = TRANS_DP_CTL(pipe);
1132 u32 trans_dp_ctl = I915_READ(trans_dp_ctl_reg);
1133 if ((trans_dp_ctl & TRANS_DP_PORT_SEL_MASK) != port_sel)
1136 if ((val & DP_PIPE_MASK) != (pipe << 30))
1142 static bool hdmi_pipe_enabled(struct drm_i915_private *dev_priv,
1143 enum pipe pipe, u32 val)
1145 if ((val & PORT_ENABLE) == 0)
1148 if (HAS_PCH_CPT(dev_priv->dev)) {
1149 if ((val & PORT_TRANS_SEL_MASK) != PORT_TRANS_SEL_CPT(pipe))
1152 if ((val & TRANSCODER_MASK) != TRANSCODER(pipe))
1158 static bool lvds_pipe_enabled(struct drm_i915_private *dev_priv,
1159 enum pipe pipe, u32 val)
1161 if ((val & LVDS_PORT_EN) == 0)
1164 if (HAS_PCH_CPT(dev_priv->dev)) {
1165 if ((val & PORT_TRANS_SEL_MASK) != PORT_TRANS_SEL_CPT(pipe))
1168 if ((val & LVDS_PIPE_MASK) != LVDS_PIPE(pipe))
1174 static bool adpa_pipe_enabled(struct drm_i915_private *dev_priv,
1175 enum pipe pipe, u32 val)
1177 if ((val & ADPA_DAC_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 & ADPA_PIPE_SELECT_MASK) != ADPA_PIPE_SELECT(pipe))
1189 static void assert_pch_dp_disabled(struct drm_i915_private *dev_priv,
1190 enum pipe pipe, int reg, u32 port_sel)
1192 u32 val = I915_READ(reg);
1193 WARN(dp_pipe_enabled(dev_priv, pipe, port_sel, val),
1194 "PCH DP (0x%08x) enabled on transcoder %c, should be disabled\n",
1195 reg, pipe_name(pipe));
1198 static void assert_pch_hdmi_disabled(struct drm_i915_private *dev_priv,
1199 enum pipe pipe, int reg)
1201 u32 val = I915_READ(reg);
1202 WARN(hdmi_pipe_enabled(dev_priv, val, pipe),
1203 "PCH HDMI (0x%08x) enabled on transcoder %c, should be disabled\n",
1204 reg, pipe_name(pipe));
1207 static void assert_pch_ports_disabled(struct drm_i915_private *dev_priv,
1213 assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_B, TRANS_DP_PORT_SEL_B);
1214 assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_C, TRANS_DP_PORT_SEL_C);
1215 assert_pch_dp_disabled(dev_priv, pipe, PCH_DP_D, TRANS_DP_PORT_SEL_D);
1218 val = I915_READ(reg);
1219 WARN(adpa_pipe_enabled(dev_priv, val, pipe),
1220 "PCH VGA enabled on transcoder %c, should be disabled\n",
1224 val = I915_READ(reg);
1225 WARN(lvds_pipe_enabled(dev_priv, val, pipe),
1226 "PCH LVDS enabled on transcoder %c, should be disabled\n",
1229 assert_pch_hdmi_disabled(dev_priv, pipe, HDMIB);
1230 assert_pch_hdmi_disabled(dev_priv, pipe, HDMIC);
1231 assert_pch_hdmi_disabled(dev_priv, pipe, HDMID);
1235 * intel_enable_pll - enable a PLL
1236 * @dev_priv: i915 private structure
1237 * @pipe: pipe PLL to enable
1239 * Enable @pipe's PLL so we can start pumping pixels from a plane. Check to
1240 * make sure the PLL reg is writable first though, since the panel write
1241 * protect mechanism may be enabled.
1243 * Note! This is for pre-ILK only.
1245 static void intel_enable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
1250 /* No really, not for ILK+ */
1251 BUG_ON(dev_priv->info->gen >= 5);
1253 /* PLL is protected by panel, make sure we can write it */
1254 if (IS_MOBILE(dev_priv->dev) && !IS_I830(dev_priv->dev))
1255 assert_panel_unlocked(dev_priv, pipe);
1258 val = I915_READ(reg);
1259 val |= DPLL_VCO_ENABLE;
1261 /* We do this three times for luck */
1262 I915_WRITE(reg, val);
1264 udelay(150); /* wait for warmup */
1265 I915_WRITE(reg, val);
1267 udelay(150); /* wait for warmup */
1268 I915_WRITE(reg, val);
1270 udelay(150); /* wait for warmup */
1274 * intel_disable_pll - disable a PLL
1275 * @dev_priv: i915 private structure
1276 * @pipe: pipe PLL to disable
1278 * Disable the PLL for @pipe, making sure the pipe is off first.
1280 * Note! This is for pre-ILK only.
1282 static void intel_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
1287 /* Don't disable pipe A or pipe A PLLs if needed */
1288 if (pipe == PIPE_A && (dev_priv->quirks & QUIRK_PIPEA_FORCE))
1291 /* Make sure the pipe isn't still relying on us */
1292 assert_pipe_disabled(dev_priv, pipe);
1295 val = I915_READ(reg);
1296 val &= ~DPLL_VCO_ENABLE;
1297 I915_WRITE(reg, val);
1302 * intel_enable_pch_pll - enable PCH PLL
1303 * @dev_priv: i915 private structure
1304 * @pipe: pipe PLL to enable
1306 * The PCH PLL needs to be enabled before the PCH transcoder, since it
1307 * drives the transcoder clock.
1309 static void intel_enable_pch_pll(struct drm_i915_private *dev_priv,
1318 /* PCH only available on ILK+ */
1319 BUG_ON(dev_priv->info->gen < 5);
1321 /* PCH refclock must be enabled first */
1322 assert_pch_refclk_enabled(dev_priv);
1324 reg = PCH_DPLL(pipe);
1325 val = I915_READ(reg);
1326 val |= DPLL_VCO_ENABLE;
1327 I915_WRITE(reg, val);
1332 static void intel_disable_pch_pll(struct drm_i915_private *dev_priv,
1336 u32 val, pll_mask = TRANSC_DPLL_ENABLE | TRANSC_DPLLB_SEL,
1337 pll_sel = TRANSC_DPLL_ENABLE;
1342 /* PCH only available on ILK+ */
1343 BUG_ON(dev_priv->info->gen < 5);
1345 /* Make sure transcoder isn't still depending on us */
1346 assert_transcoder_disabled(dev_priv, pipe);
1349 pll_sel |= TRANSC_DPLLA_SEL;
1351 pll_sel |= TRANSC_DPLLB_SEL;
1354 if ((I915_READ(PCH_DPLL_SEL) & pll_mask) == pll_sel)
1357 reg = PCH_DPLL(pipe);
1358 val = I915_READ(reg);
1359 val &= ~DPLL_VCO_ENABLE;
1360 I915_WRITE(reg, val);
1365 static void intel_enable_transcoder(struct drm_i915_private *dev_priv,
1369 u32 val, pipeconf_val;
1370 struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
1372 /* PCH only available on ILK+ */
1373 BUG_ON(dev_priv->info->gen < 5);
1375 /* Make sure PCH DPLL is enabled */
1376 assert_pch_pll_enabled(dev_priv, pipe);
1378 /* FDI must be feeding us bits for PCH ports */
1379 assert_fdi_tx_enabled(dev_priv, pipe);
1380 assert_fdi_rx_enabled(dev_priv, pipe);
1382 reg = TRANSCONF(pipe);
1383 val = I915_READ(reg);
1384 pipeconf_val = I915_READ(PIPECONF(pipe));
1386 if (HAS_PCH_IBX(dev_priv->dev)) {
1388 * make the BPC in transcoder be consistent with
1389 * that in pipeconf reg.
1391 val &= ~PIPE_BPC_MASK;
1392 val |= pipeconf_val & PIPE_BPC_MASK;
1395 val &= ~TRANS_INTERLACE_MASK;
1396 if ((pipeconf_val & PIPECONF_INTERLACE_MASK) == PIPECONF_INTERLACED_ILK)
1397 if (HAS_PCH_IBX(dev_priv->dev) &&
1398 intel_pipe_has_type(crtc, INTEL_OUTPUT_SDVO))
1399 val |= TRANS_LEGACY_INTERLACED_ILK;
1401 val |= TRANS_INTERLACED;
1403 val |= TRANS_PROGRESSIVE;
1405 I915_WRITE(reg, val | TRANS_ENABLE);
1406 if (wait_for(I915_READ(reg) & TRANS_STATE_ENABLE, 100))
1407 DRM_ERROR("failed to enable transcoder %d\n", pipe);
1410 static void intel_disable_transcoder(struct drm_i915_private *dev_priv,
1416 /* FDI relies on the transcoder */
1417 assert_fdi_tx_disabled(dev_priv, pipe);
1418 assert_fdi_rx_disabled(dev_priv, pipe);
1420 /* Ports must be off as well */
1421 assert_pch_ports_disabled(dev_priv, pipe);
1423 reg = TRANSCONF(pipe);
1424 val = I915_READ(reg);
1425 val &= ~TRANS_ENABLE;
1426 I915_WRITE(reg, val);
1427 /* wait for PCH transcoder off, transcoder state */
1428 if (wait_for((I915_READ(reg) & TRANS_STATE_ENABLE) == 0, 50))
1429 DRM_ERROR("failed to disable transcoder %d\n", pipe);
1433 * intel_enable_pipe - enable a pipe, asserting requirements
1434 * @dev_priv: i915 private structure
1435 * @pipe: pipe to enable
1436 * @pch_port: on ILK+, is this pipe driving a PCH port or not
1438 * Enable @pipe, making sure that various hardware specific requirements
1439 * are met, if applicable, e.g. PLL enabled, LVDS pairs enabled, etc.
1441 * @pipe should be %PIPE_A or %PIPE_B.
1443 * Will wait until the pipe is actually running (i.e. first vblank) before
1446 static void intel_enable_pipe(struct drm_i915_private *dev_priv, enum pipe pipe,
1453 * A pipe without a PLL won't actually be able to drive bits from
1454 * a plane. On ILK+ the pipe PLLs are integrated, so we don't
1457 if (!HAS_PCH_SPLIT(dev_priv->dev))
1458 assert_pll_enabled(dev_priv, pipe);
1461 /* if driving the PCH, we need FDI enabled */
1462 assert_fdi_rx_pll_enabled(dev_priv, pipe);
1463 assert_fdi_tx_pll_enabled(dev_priv, pipe);
1465 /* FIXME: assert CPU port conditions for SNB+ */
1468 reg = PIPECONF(pipe);
1469 val = I915_READ(reg);
1470 if (val & PIPECONF_ENABLE)
1473 I915_WRITE(reg, val | PIPECONF_ENABLE);
1474 intel_wait_for_vblank(dev_priv->dev, pipe);
1478 * intel_disable_pipe - disable a pipe, asserting requirements
1479 * @dev_priv: i915 private structure
1480 * @pipe: pipe to disable
1482 * Disable @pipe, making sure that various hardware specific requirements
1483 * are met, if applicable, e.g. plane disabled, panel fitter off, etc.
1485 * @pipe should be %PIPE_A or %PIPE_B.
1487 * Will wait until the pipe has shut down before returning.
1489 static void intel_disable_pipe(struct drm_i915_private *dev_priv,
1496 * Make sure planes won't keep trying to pump pixels to us,
1497 * or we might hang the display.
1499 assert_planes_disabled(dev_priv, pipe);
1501 /* Don't disable pipe A or pipe A PLLs if needed */
1502 if (pipe == PIPE_A && (dev_priv->quirks & QUIRK_PIPEA_FORCE))
1505 reg = PIPECONF(pipe);
1506 val = I915_READ(reg);
1507 if ((val & PIPECONF_ENABLE) == 0)
1510 I915_WRITE(reg, val & ~PIPECONF_ENABLE);
1511 intel_wait_for_pipe_off(dev_priv->dev, pipe);
1515 * Plane regs are double buffered, going from enabled->disabled needs a
1516 * trigger in order to latch. The display address reg provides this.
1518 void intel_flush_display_plane(struct drm_i915_private *dev_priv,
1521 I915_WRITE(DSPADDR(plane), I915_READ(DSPADDR(plane)));
1522 I915_WRITE(DSPSURF(plane), I915_READ(DSPSURF(plane)));
1526 * intel_enable_plane - enable a display plane on a given pipe
1527 * @dev_priv: i915 private structure
1528 * @plane: plane to enable
1529 * @pipe: pipe being fed
1531 * Enable @plane on @pipe, making sure that @pipe is running first.
1533 static void intel_enable_plane(struct drm_i915_private *dev_priv,
1534 enum plane plane, enum pipe pipe)
1539 /* If the pipe isn't enabled, we can't pump pixels and may hang */
1540 assert_pipe_enabled(dev_priv, pipe);
1542 reg = DSPCNTR(plane);
1543 val = I915_READ(reg);
1544 if (val & DISPLAY_PLANE_ENABLE)
1547 I915_WRITE(reg, val | DISPLAY_PLANE_ENABLE);
1548 intel_flush_display_plane(dev_priv, plane);
1549 intel_wait_for_vblank(dev_priv->dev, pipe);
1553 * intel_disable_plane - disable a display plane
1554 * @dev_priv: i915 private structure
1555 * @plane: plane to disable
1556 * @pipe: pipe consuming the data
1558 * Disable @plane; should be an independent operation.
1560 static void intel_disable_plane(struct drm_i915_private *dev_priv,
1561 enum plane plane, enum pipe pipe)
1566 reg = DSPCNTR(plane);
1567 val = I915_READ(reg);
1568 if ((val & DISPLAY_PLANE_ENABLE) == 0)
1571 I915_WRITE(reg, val & ~DISPLAY_PLANE_ENABLE);
1572 intel_flush_display_plane(dev_priv, plane);
1573 intel_wait_for_vblank(dev_priv->dev, pipe);
1576 static void disable_pch_dp(struct drm_i915_private *dev_priv,
1577 enum pipe pipe, int reg, u32 port_sel)
1579 u32 val = I915_READ(reg);
1580 if (dp_pipe_enabled(dev_priv, pipe, port_sel, val)) {
1581 DRM_DEBUG_KMS("Disabling pch dp %x on pipe %d\n", reg, pipe);
1582 I915_WRITE(reg, val & ~DP_PORT_EN);
1586 static void disable_pch_hdmi(struct drm_i915_private *dev_priv,
1587 enum pipe pipe, int reg)
1589 u32 val = I915_READ(reg);
1590 if (hdmi_pipe_enabled(dev_priv, val, pipe)) {
1591 DRM_DEBUG_KMS("Disabling pch HDMI %x on pipe %d\n",
1593 I915_WRITE(reg, val & ~PORT_ENABLE);
1597 /* Disable any ports connected to this transcoder */
1598 static void intel_disable_pch_ports(struct drm_i915_private *dev_priv,
1603 val = I915_READ(PCH_PP_CONTROL);
1604 I915_WRITE(PCH_PP_CONTROL, val | PANEL_UNLOCK_REGS);
1606 disable_pch_dp(dev_priv, pipe, PCH_DP_B, TRANS_DP_PORT_SEL_B);
1607 disable_pch_dp(dev_priv, pipe, PCH_DP_C, TRANS_DP_PORT_SEL_C);
1608 disable_pch_dp(dev_priv, pipe, PCH_DP_D, TRANS_DP_PORT_SEL_D);
1611 val = I915_READ(reg);
1612 if (adpa_pipe_enabled(dev_priv, val, pipe))
1613 I915_WRITE(reg, val & ~ADPA_DAC_ENABLE);
1616 val = I915_READ(reg);
1617 if (lvds_pipe_enabled(dev_priv, val, pipe)) {
1618 DRM_DEBUG_KMS("disable lvds on pipe %d val 0x%08x\n", pipe, val);
1619 I915_WRITE(reg, val & ~LVDS_PORT_EN);
1624 disable_pch_hdmi(dev_priv, pipe, HDMIB);
1625 disable_pch_hdmi(dev_priv, pipe, HDMIC);
1626 disable_pch_hdmi(dev_priv, pipe, HDMID);
1630 intel_pin_and_fence_fb_obj(struct drm_device *dev,
1631 struct drm_i915_gem_object *obj,
1632 struct intel_ring_buffer *pipelined)
1634 struct drm_i915_private *dev_priv = dev->dev_private;
1638 switch (obj->tiling_mode) {
1639 case I915_TILING_NONE:
1640 if (IS_BROADWATER(dev) || IS_CRESTLINE(dev))
1641 alignment = 128 * 1024;
1642 else if (INTEL_INFO(dev)->gen >= 4)
1643 alignment = 4 * 1024;
1645 alignment = 64 * 1024;
1648 /* pin() will align the object as required by fence */
1652 /* FIXME: Is this true? */
1653 DRM_ERROR("Y tiled not allowed for scan out buffers\n");
1659 dev_priv->mm.interruptible = false;
1660 ret = i915_gem_object_pin_to_display_plane(obj, alignment, pipelined);
1662 goto err_interruptible;
1664 /* Install a fence for tiled scan-out. Pre-i965 always needs a
1665 * fence, whereas 965+ only requires a fence if using
1666 * framebuffer compression. For simplicity, we always install
1667 * a fence as the cost is not that onerous.
1669 ret = i915_gem_object_get_fence(obj);
1673 i915_gem_object_pin_fence(obj);
1675 dev_priv->mm.interruptible = true;
1679 i915_gem_object_unpin(obj);
1681 dev_priv->mm.interruptible = true;
1685 void intel_unpin_fb_obj(struct drm_i915_gem_object *obj)
1687 i915_gem_object_unpin_fence(obj);
1688 i915_gem_object_unpin(obj);
1691 static int i9xx_update_plane(struct drm_crtc *crtc, struct drm_framebuffer *fb,
1694 struct drm_device *dev = crtc->dev;
1695 struct drm_i915_private *dev_priv = dev->dev_private;
1696 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1697 struct intel_framebuffer *intel_fb;
1698 struct drm_i915_gem_object *obj;
1699 int plane = intel_crtc->plane;
1700 unsigned long Start, Offset;
1709 DRM_ERROR("Can't update plane %d in SAREA\n", plane);
1713 intel_fb = to_intel_framebuffer(fb);
1714 obj = intel_fb->obj;
1716 reg = DSPCNTR(plane);
1717 dspcntr = I915_READ(reg);
1718 /* Mask out pixel format bits in case we change it */
1719 dspcntr &= ~DISPPLANE_PIXFORMAT_MASK;
1720 switch (fb->bits_per_pixel) {
1722 dspcntr |= DISPPLANE_8BPP;
1725 if (fb->depth == 15)
1726 dspcntr |= DISPPLANE_15_16BPP;
1728 dspcntr |= DISPPLANE_16BPP;
1732 dspcntr |= DISPPLANE_32BPP_NO_ALPHA;
1735 DRM_ERROR("Unknown color depth %d\n", fb->bits_per_pixel);
1738 if (INTEL_INFO(dev)->gen >= 4) {
1739 if (obj->tiling_mode != I915_TILING_NONE)
1740 dspcntr |= DISPPLANE_TILED;
1742 dspcntr &= ~DISPPLANE_TILED;
1745 I915_WRITE(reg, dspcntr);
1747 Start = obj->gtt_offset;
1748 Offset = y * fb->pitches[0] + x * (fb->bits_per_pixel / 8);
1750 DRM_DEBUG_KMS("Writing base %08lX %08lX %d %d %d\n",
1751 Start, Offset, x, y, fb->pitches[0]);
1752 I915_WRITE(DSPSTRIDE(plane), fb->pitches[0]);
1753 if (INTEL_INFO(dev)->gen >= 4) {
1754 I915_MODIFY_DISPBASE(DSPSURF(plane), Start);
1755 I915_WRITE(DSPTILEOFF(plane), (y << 16) | x);
1756 I915_WRITE(DSPADDR(plane), Offset);
1758 I915_WRITE(DSPADDR(plane), Start + Offset);
1764 static int ironlake_update_plane(struct drm_crtc *crtc,
1765 struct drm_framebuffer *fb, int x, int y)
1767 struct drm_device *dev = crtc->dev;
1768 struct drm_i915_private *dev_priv = dev->dev_private;
1769 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1770 struct intel_framebuffer *intel_fb;
1771 struct drm_i915_gem_object *obj;
1772 int plane = intel_crtc->plane;
1773 unsigned long Start, Offset;
1783 DRM_ERROR("Can't update plane %d in SAREA\n", plane);
1787 intel_fb = to_intel_framebuffer(fb);
1788 obj = intel_fb->obj;
1790 reg = DSPCNTR(plane);
1791 dspcntr = I915_READ(reg);
1792 /* Mask out pixel format bits in case we change it */
1793 dspcntr &= ~DISPPLANE_PIXFORMAT_MASK;
1794 switch (fb->bits_per_pixel) {
1796 dspcntr |= DISPPLANE_8BPP;
1799 if (fb->depth != 16)
1802 dspcntr |= DISPPLANE_16BPP;
1806 if (fb->depth == 24)
1807 dspcntr |= DISPPLANE_32BPP_NO_ALPHA;
1808 else if (fb->depth == 30)
1809 dspcntr |= DISPPLANE_32BPP_30BIT_NO_ALPHA;
1814 DRM_ERROR("Unknown color depth %d\n", fb->bits_per_pixel);
1818 if (obj->tiling_mode != I915_TILING_NONE)
1819 dspcntr |= DISPPLANE_TILED;
1821 dspcntr &= ~DISPPLANE_TILED;
1824 dspcntr |= DISPPLANE_TRICKLE_FEED_DISABLE;
1826 I915_WRITE(reg, dspcntr);
1828 Start = obj->gtt_offset;
1829 Offset = y * fb->pitches[0] + x * (fb->bits_per_pixel / 8);
1831 DRM_DEBUG_KMS("Writing base %08lX %08lX %d %d %d\n",
1832 Start, Offset, x, y, fb->pitches[0]);
1833 I915_WRITE(DSPSTRIDE(plane), fb->pitches[0]);
1834 I915_MODIFY_DISPBASE(DSPSURF(plane), Start);
1835 I915_WRITE(DSPTILEOFF(plane), (y << 16) | x);
1836 I915_WRITE(DSPADDR(plane), Offset);
1842 /* Assume fb object is pinned & idle & fenced and just update base pointers */
1844 intel_pipe_set_base_atomic(struct drm_crtc *crtc, struct drm_framebuffer *fb,
1845 int x, int y, enum mode_set_atomic state)
1847 struct drm_device *dev = crtc->dev;
1848 struct drm_i915_private *dev_priv = dev->dev_private;
1850 if (dev_priv->display.disable_fbc)
1851 dev_priv->display.disable_fbc(dev);
1852 intel_increase_pllclock(crtc);
1854 return dev_priv->display.update_plane(crtc, fb, x, y);
1858 intel_finish_fb(struct drm_framebuffer *old_fb)
1860 struct drm_i915_gem_object *obj = to_intel_framebuffer(old_fb)->obj;
1861 struct drm_i915_private *dev_priv = obj->base.dev->dev_private;
1862 bool was_interruptible = dev_priv->mm.interruptible;
1865 wait_event(dev_priv->pending_flip_queue,
1866 atomic_read(&dev_priv->mm.wedged) ||
1867 atomic_read(&obj->pending_flip) == 0);
1869 /* Big Hammer, we also need to ensure that any pending
1870 * MI_WAIT_FOR_EVENT inside a user batch buffer on the
1871 * current scanout is retired before unpinning the old
1874 * This should only fail upon a hung GPU, in which case we
1875 * can safely continue.
1877 dev_priv->mm.interruptible = false;
1878 ret = i915_gem_object_finish_gpu(obj);
1879 dev_priv->mm.interruptible = was_interruptible;
1885 intel_pipe_set_base(struct drm_crtc *crtc, int x, int y,
1886 struct drm_framebuffer *old_fb)
1888 struct drm_device *dev = crtc->dev;
1889 struct drm_i915_private *dev_priv = dev->dev_private;
1890 struct drm_i915_master_private *master_priv;
1891 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1896 DRM_ERROR("No FB bound\n");
1900 switch (intel_crtc->plane) {
1905 if (IS_IVYBRIDGE(dev))
1907 /* fall through otherwise */
1909 DRM_ERROR("no plane for crtc\n");
1913 mutex_lock(&dev->struct_mutex);
1914 ret = intel_pin_and_fence_fb_obj(dev,
1915 to_intel_framebuffer(crtc->fb)->obj,
1918 mutex_unlock(&dev->struct_mutex);
1919 DRM_ERROR("pin & fence failed\n");
1924 intel_finish_fb(old_fb);
1926 ret = dev_priv->display.update_plane(crtc, crtc->fb, x, y);
1928 intel_unpin_fb_obj(to_intel_framebuffer(crtc->fb)->obj);
1929 mutex_unlock(&dev->struct_mutex);
1930 DRM_ERROR("failed to update base address\n");
1935 intel_wait_for_vblank(dev, intel_crtc->pipe);
1936 intel_unpin_fb_obj(to_intel_framebuffer(old_fb)->obj);
1939 intel_update_fbc(dev);
1940 mutex_unlock(&dev->struct_mutex);
1942 if (!dev->primary->master)
1945 master_priv = dev->primary->master->driver_priv;
1946 if (!master_priv->sarea_priv)
1949 if (intel_crtc->pipe) {
1950 master_priv->sarea_priv->pipeB_x = x;
1951 master_priv->sarea_priv->pipeB_y = y;
1953 master_priv->sarea_priv->pipeA_x = x;
1954 master_priv->sarea_priv->pipeA_y = y;
1960 static void ironlake_set_pll_edp(struct drm_crtc *crtc, int clock)
1962 struct drm_device *dev = crtc->dev;
1963 struct drm_i915_private *dev_priv = dev->dev_private;
1966 DRM_DEBUG_KMS("eDP PLL enable for clock %d\n", clock);
1967 dpa_ctl = I915_READ(DP_A);
1968 dpa_ctl &= ~DP_PLL_FREQ_MASK;
1970 if (clock < 200000) {
1972 dpa_ctl |= DP_PLL_FREQ_160MHZ;
1973 /* workaround for 160Mhz:
1974 1) program 0x4600c bits 15:0 = 0x8124
1975 2) program 0x46010 bit 0 = 1
1976 3) program 0x46034 bit 24 = 1
1977 4) program 0x64000 bit 14 = 1
1979 temp = I915_READ(0x4600c);
1981 I915_WRITE(0x4600c, temp | 0x8124);
1983 temp = I915_READ(0x46010);
1984 I915_WRITE(0x46010, temp | 1);
1986 temp = I915_READ(0x46034);
1987 I915_WRITE(0x46034, temp | (1 << 24));
1989 dpa_ctl |= DP_PLL_FREQ_270MHZ;
1991 I915_WRITE(DP_A, dpa_ctl);
1997 static void intel_fdi_normal_train(struct drm_crtc *crtc)
1999 struct drm_device *dev = crtc->dev;
2000 struct drm_i915_private *dev_priv = dev->dev_private;
2001 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2002 int pipe = intel_crtc->pipe;
2005 /* enable normal train */
2006 reg = FDI_TX_CTL(pipe);
2007 temp = I915_READ(reg);
2008 if (IS_IVYBRIDGE(dev)) {
2009 temp &= ~FDI_LINK_TRAIN_NONE_IVB;
2010 temp |= FDI_LINK_TRAIN_NONE_IVB | FDI_TX_ENHANCE_FRAME_ENABLE;
2012 temp &= ~FDI_LINK_TRAIN_NONE;
2013 temp |= FDI_LINK_TRAIN_NONE | FDI_TX_ENHANCE_FRAME_ENABLE;
2015 I915_WRITE(reg, temp);
2017 reg = FDI_RX_CTL(pipe);
2018 temp = I915_READ(reg);
2019 if (HAS_PCH_CPT(dev)) {
2020 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
2021 temp |= FDI_LINK_TRAIN_NORMAL_CPT;
2023 temp &= ~FDI_LINK_TRAIN_NONE;
2024 temp |= FDI_LINK_TRAIN_NONE;
2026 I915_WRITE(reg, temp | FDI_RX_ENHANCE_FRAME_ENABLE);
2028 /* wait one idle pattern time */
2032 /* IVB wants error correction enabled */
2033 if (IS_IVYBRIDGE(dev))
2034 I915_WRITE(reg, I915_READ(reg) | FDI_FS_ERRC_ENABLE |
2035 FDI_FE_ERRC_ENABLE);
2038 static void cpt_phase_pointer_enable(struct drm_device *dev, int pipe)
2040 struct drm_i915_private *dev_priv = dev->dev_private;
2041 u32 flags = I915_READ(SOUTH_CHICKEN1);
2043 flags |= FDI_PHASE_SYNC_OVR(pipe);
2044 I915_WRITE(SOUTH_CHICKEN1, flags); /* once to unlock... */
2045 flags |= FDI_PHASE_SYNC_EN(pipe);
2046 I915_WRITE(SOUTH_CHICKEN1, flags); /* then again to enable */
2047 POSTING_READ(SOUTH_CHICKEN1);
2050 /* The FDI link training functions for ILK/Ibexpeak. */
2051 static void ironlake_fdi_link_train(struct drm_crtc *crtc)
2053 struct drm_device *dev = crtc->dev;
2054 struct drm_i915_private *dev_priv = dev->dev_private;
2055 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2056 int pipe = intel_crtc->pipe;
2057 int plane = intel_crtc->plane;
2058 u32 reg, temp, tries;
2060 /* FDI needs bits from pipe & plane first */
2061 assert_pipe_enabled(dev_priv, pipe);
2062 assert_plane_enabled(dev_priv, plane);
2064 /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
2066 reg = FDI_RX_IMR(pipe);
2067 temp = I915_READ(reg);
2068 temp &= ~FDI_RX_SYMBOL_LOCK;
2069 temp &= ~FDI_RX_BIT_LOCK;
2070 I915_WRITE(reg, temp);
2074 /* enable CPU FDI TX and PCH FDI RX */
2075 reg = FDI_TX_CTL(pipe);
2076 temp = I915_READ(reg);
2078 temp |= (intel_crtc->fdi_lanes - 1) << 19;
2079 temp &= ~FDI_LINK_TRAIN_NONE;
2080 temp |= FDI_LINK_TRAIN_PATTERN_1;
2081 I915_WRITE(reg, temp | FDI_TX_ENABLE);
2083 reg = FDI_RX_CTL(pipe);
2084 temp = I915_READ(reg);
2085 temp &= ~FDI_LINK_TRAIN_NONE;
2086 temp |= FDI_LINK_TRAIN_PATTERN_1;
2087 I915_WRITE(reg, temp | FDI_RX_ENABLE);
2092 /* Ironlake workaround, enable clock pointer after FDI enable*/
2093 if (HAS_PCH_IBX(dev)) {
2094 I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR);
2095 I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR |
2096 FDI_RX_PHASE_SYNC_POINTER_EN);
2099 reg = FDI_RX_IIR(pipe);
2100 for (tries = 0; tries < 5; tries++) {
2101 temp = I915_READ(reg);
2102 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
2104 if ((temp & FDI_RX_BIT_LOCK)) {
2105 DRM_DEBUG_KMS("FDI train 1 done.\n");
2106 I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
2111 DRM_ERROR("FDI train 1 fail!\n");
2114 reg = FDI_TX_CTL(pipe);
2115 temp = I915_READ(reg);
2116 temp &= ~FDI_LINK_TRAIN_NONE;
2117 temp |= FDI_LINK_TRAIN_PATTERN_2;
2118 I915_WRITE(reg, temp);
2120 reg = FDI_RX_CTL(pipe);
2121 temp = I915_READ(reg);
2122 temp &= ~FDI_LINK_TRAIN_NONE;
2123 temp |= FDI_LINK_TRAIN_PATTERN_2;
2124 I915_WRITE(reg, temp);
2129 reg = FDI_RX_IIR(pipe);
2130 for (tries = 0; tries < 5; tries++) {
2131 temp = I915_READ(reg);
2132 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
2134 if (temp & FDI_RX_SYMBOL_LOCK) {
2135 I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
2136 DRM_DEBUG_KMS("FDI train 2 done.\n");
2141 DRM_ERROR("FDI train 2 fail!\n");
2143 DRM_DEBUG_KMS("FDI train done\n");
2147 static const int snb_b_fdi_train_param[] = {
2148 FDI_LINK_TRAIN_400MV_0DB_SNB_B,
2149 FDI_LINK_TRAIN_400MV_6DB_SNB_B,
2150 FDI_LINK_TRAIN_600MV_3_5DB_SNB_B,
2151 FDI_LINK_TRAIN_800MV_0DB_SNB_B,
2154 /* The FDI link training functions for SNB/Cougarpoint. */
2155 static void gen6_fdi_link_train(struct drm_crtc *crtc)
2157 struct drm_device *dev = crtc->dev;
2158 struct drm_i915_private *dev_priv = dev->dev_private;
2159 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2160 int pipe = intel_crtc->pipe;
2161 u32 reg, temp, i, retry;
2163 /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
2165 reg = FDI_RX_IMR(pipe);
2166 temp = I915_READ(reg);
2167 temp &= ~FDI_RX_SYMBOL_LOCK;
2168 temp &= ~FDI_RX_BIT_LOCK;
2169 I915_WRITE(reg, temp);
2174 /* enable CPU FDI TX and PCH FDI RX */
2175 reg = FDI_TX_CTL(pipe);
2176 temp = I915_READ(reg);
2178 temp |= (intel_crtc->fdi_lanes - 1) << 19;
2179 temp &= ~FDI_LINK_TRAIN_NONE;
2180 temp |= FDI_LINK_TRAIN_PATTERN_1;
2181 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2183 temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
2184 I915_WRITE(reg, temp | FDI_TX_ENABLE);
2186 reg = FDI_RX_CTL(pipe);
2187 temp = I915_READ(reg);
2188 if (HAS_PCH_CPT(dev)) {
2189 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
2190 temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
2192 temp &= ~FDI_LINK_TRAIN_NONE;
2193 temp |= FDI_LINK_TRAIN_PATTERN_1;
2195 I915_WRITE(reg, temp | FDI_RX_ENABLE);
2200 if (HAS_PCH_CPT(dev))
2201 cpt_phase_pointer_enable(dev, pipe);
2203 for (i = 0; i < 4; i++) {
2204 reg = FDI_TX_CTL(pipe);
2205 temp = I915_READ(reg);
2206 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2207 temp |= snb_b_fdi_train_param[i];
2208 I915_WRITE(reg, temp);
2213 for (retry = 0; retry < 5; retry++) {
2214 reg = FDI_RX_IIR(pipe);
2215 temp = I915_READ(reg);
2216 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
2217 if (temp & FDI_RX_BIT_LOCK) {
2218 I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
2219 DRM_DEBUG_KMS("FDI train 1 done.\n");
2228 DRM_ERROR("FDI train 1 fail!\n");
2231 reg = FDI_TX_CTL(pipe);
2232 temp = I915_READ(reg);
2233 temp &= ~FDI_LINK_TRAIN_NONE;
2234 temp |= FDI_LINK_TRAIN_PATTERN_2;
2236 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2238 temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
2240 I915_WRITE(reg, temp);
2242 reg = FDI_RX_CTL(pipe);
2243 temp = I915_READ(reg);
2244 if (HAS_PCH_CPT(dev)) {
2245 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
2246 temp |= FDI_LINK_TRAIN_PATTERN_2_CPT;
2248 temp &= ~FDI_LINK_TRAIN_NONE;
2249 temp |= FDI_LINK_TRAIN_PATTERN_2;
2251 I915_WRITE(reg, temp);
2256 for (i = 0; i < 4; i++) {
2257 reg = FDI_TX_CTL(pipe);
2258 temp = I915_READ(reg);
2259 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2260 temp |= snb_b_fdi_train_param[i];
2261 I915_WRITE(reg, temp);
2266 for (retry = 0; retry < 5; retry++) {
2267 reg = FDI_RX_IIR(pipe);
2268 temp = I915_READ(reg);
2269 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
2270 if (temp & FDI_RX_SYMBOL_LOCK) {
2271 I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
2272 DRM_DEBUG_KMS("FDI train 2 done.\n");
2281 DRM_ERROR("FDI train 2 fail!\n");
2283 DRM_DEBUG_KMS("FDI train done.\n");
2286 /* Manual link training for Ivy Bridge A0 parts */
2287 static void ivb_manual_fdi_link_train(struct drm_crtc *crtc)
2289 struct drm_device *dev = crtc->dev;
2290 struct drm_i915_private *dev_priv = dev->dev_private;
2291 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2292 int pipe = intel_crtc->pipe;
2295 /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
2297 reg = FDI_RX_IMR(pipe);
2298 temp = I915_READ(reg);
2299 temp &= ~FDI_RX_SYMBOL_LOCK;
2300 temp &= ~FDI_RX_BIT_LOCK;
2301 I915_WRITE(reg, temp);
2306 /* enable CPU FDI TX and PCH FDI RX */
2307 reg = FDI_TX_CTL(pipe);
2308 temp = I915_READ(reg);
2310 temp |= (intel_crtc->fdi_lanes - 1) << 19;
2311 temp &= ~(FDI_LINK_TRAIN_AUTO | FDI_LINK_TRAIN_NONE_IVB);
2312 temp |= FDI_LINK_TRAIN_PATTERN_1_IVB;
2313 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2314 temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
2315 temp |= FDI_COMPOSITE_SYNC;
2316 I915_WRITE(reg, temp | FDI_TX_ENABLE);
2318 reg = FDI_RX_CTL(pipe);
2319 temp = I915_READ(reg);
2320 temp &= ~FDI_LINK_TRAIN_AUTO;
2321 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
2322 temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
2323 temp |= FDI_COMPOSITE_SYNC;
2324 I915_WRITE(reg, temp | FDI_RX_ENABLE);
2329 if (HAS_PCH_CPT(dev))
2330 cpt_phase_pointer_enable(dev, pipe);
2332 for (i = 0; i < 4; i++) {
2333 reg = FDI_TX_CTL(pipe);
2334 temp = I915_READ(reg);
2335 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2336 temp |= snb_b_fdi_train_param[i];
2337 I915_WRITE(reg, temp);
2342 reg = FDI_RX_IIR(pipe);
2343 temp = I915_READ(reg);
2344 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
2346 if (temp & FDI_RX_BIT_LOCK ||
2347 (I915_READ(reg) & FDI_RX_BIT_LOCK)) {
2348 I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
2349 DRM_DEBUG_KMS("FDI train 1 done.\n");
2354 DRM_ERROR("FDI train 1 fail!\n");
2357 reg = FDI_TX_CTL(pipe);
2358 temp = I915_READ(reg);
2359 temp &= ~FDI_LINK_TRAIN_NONE_IVB;
2360 temp |= FDI_LINK_TRAIN_PATTERN_2_IVB;
2361 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2362 temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
2363 I915_WRITE(reg, temp);
2365 reg = FDI_RX_CTL(pipe);
2366 temp = I915_READ(reg);
2367 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
2368 temp |= FDI_LINK_TRAIN_PATTERN_2_CPT;
2369 I915_WRITE(reg, temp);
2374 for (i = 0; i < 4; i++) {
2375 reg = FDI_TX_CTL(pipe);
2376 temp = I915_READ(reg);
2377 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
2378 temp |= snb_b_fdi_train_param[i];
2379 I915_WRITE(reg, temp);
2384 reg = FDI_RX_IIR(pipe);
2385 temp = I915_READ(reg);
2386 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
2388 if (temp & FDI_RX_SYMBOL_LOCK) {
2389 I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
2390 DRM_DEBUG_KMS("FDI train 2 done.\n");
2395 DRM_ERROR("FDI train 2 fail!\n");
2397 DRM_DEBUG_KMS("FDI train done.\n");
2400 static void ironlake_fdi_pll_enable(struct drm_crtc *crtc)
2402 struct drm_device *dev = crtc->dev;
2403 struct drm_i915_private *dev_priv = dev->dev_private;
2404 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2405 int pipe = intel_crtc->pipe;
2408 /* Write the TU size bits so error detection works */
2409 I915_WRITE(FDI_RX_TUSIZE1(pipe),
2410 I915_READ(PIPE_DATA_M1(pipe)) & TU_SIZE_MASK);
2412 /* enable PCH FDI RX PLL, wait warmup plus DMI latency */
2413 reg = FDI_RX_CTL(pipe);
2414 temp = I915_READ(reg);
2415 temp &= ~((0x7 << 19) | (0x7 << 16));
2416 temp |= (intel_crtc->fdi_lanes - 1) << 19;
2417 temp |= (I915_READ(PIPECONF(pipe)) & PIPE_BPC_MASK) << 11;
2418 I915_WRITE(reg, temp | FDI_RX_PLL_ENABLE);
2423 /* Switch from Rawclk to PCDclk */
2424 temp = I915_READ(reg);
2425 I915_WRITE(reg, temp | FDI_PCDCLK);
2430 /* Enable CPU FDI TX PLL, always on for Ironlake */
2431 reg = FDI_TX_CTL(pipe);
2432 temp = I915_READ(reg);
2433 if ((temp & FDI_TX_PLL_ENABLE) == 0) {
2434 I915_WRITE(reg, temp | FDI_TX_PLL_ENABLE);
2441 static void cpt_phase_pointer_disable(struct drm_device *dev, int pipe)
2443 struct drm_i915_private *dev_priv = dev->dev_private;
2444 u32 flags = I915_READ(SOUTH_CHICKEN1);
2446 flags &= ~(FDI_PHASE_SYNC_EN(pipe));
2447 I915_WRITE(SOUTH_CHICKEN1, flags); /* once to disable... */
2448 flags &= ~(FDI_PHASE_SYNC_OVR(pipe));
2449 I915_WRITE(SOUTH_CHICKEN1, flags); /* then again to lock */
2450 POSTING_READ(SOUTH_CHICKEN1);
2452 static void ironlake_fdi_disable(struct drm_crtc *crtc)
2454 struct drm_device *dev = crtc->dev;
2455 struct drm_i915_private *dev_priv = dev->dev_private;
2456 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2457 int pipe = intel_crtc->pipe;
2460 /* disable CPU FDI tx and PCH FDI rx */
2461 reg = FDI_TX_CTL(pipe);
2462 temp = I915_READ(reg);
2463 I915_WRITE(reg, temp & ~FDI_TX_ENABLE);
2466 reg = FDI_RX_CTL(pipe);
2467 temp = I915_READ(reg);
2468 temp &= ~(0x7 << 16);
2469 temp |= (I915_READ(PIPECONF(pipe)) & PIPE_BPC_MASK) << 11;
2470 I915_WRITE(reg, temp & ~FDI_RX_ENABLE);
2475 /* Ironlake workaround, disable clock pointer after downing FDI */
2476 if (HAS_PCH_IBX(dev)) {
2477 I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR);
2478 I915_WRITE(FDI_RX_CHICKEN(pipe),
2479 I915_READ(FDI_RX_CHICKEN(pipe) &
2480 ~FDI_RX_PHASE_SYNC_POINTER_EN));
2481 } else if (HAS_PCH_CPT(dev)) {
2482 cpt_phase_pointer_disable(dev, pipe);
2485 /* still set train pattern 1 */
2486 reg = FDI_TX_CTL(pipe);
2487 temp = I915_READ(reg);
2488 temp &= ~FDI_LINK_TRAIN_NONE;
2489 temp |= FDI_LINK_TRAIN_PATTERN_1;
2490 I915_WRITE(reg, temp);
2492 reg = FDI_RX_CTL(pipe);
2493 temp = I915_READ(reg);
2494 if (HAS_PCH_CPT(dev)) {
2495 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
2496 temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
2498 temp &= ~FDI_LINK_TRAIN_NONE;
2499 temp |= FDI_LINK_TRAIN_PATTERN_1;
2501 /* BPC in FDI rx is consistent with that in PIPECONF */
2502 temp &= ~(0x07 << 16);
2503 temp |= (I915_READ(PIPECONF(pipe)) & PIPE_BPC_MASK) << 11;
2504 I915_WRITE(reg, temp);
2511 * When we disable a pipe, we need to clear any pending scanline wait events
2512 * to avoid hanging the ring, which we assume we are waiting on.
2514 static void intel_clear_scanline_wait(struct drm_device *dev)
2516 struct drm_i915_private *dev_priv = dev->dev_private;
2517 struct intel_ring_buffer *ring;
2521 /* Can't break the hang on i8xx */
2524 ring = LP_RING(dev_priv);
2525 tmp = I915_READ_CTL(ring);
2526 if (tmp & RING_WAIT)
2527 I915_WRITE_CTL(ring, tmp);
2530 static void intel_crtc_wait_for_pending_flips(struct drm_crtc *crtc)
2532 struct drm_device *dev = crtc->dev;
2534 if (crtc->fb == NULL)
2537 mutex_lock(&dev->struct_mutex);
2538 intel_finish_fb(crtc->fb);
2539 mutex_unlock(&dev->struct_mutex);
2542 static bool intel_crtc_driving_pch(struct drm_crtc *crtc)
2544 struct drm_device *dev = crtc->dev;
2545 struct drm_mode_config *mode_config = &dev->mode_config;
2546 struct intel_encoder *encoder;
2549 * If there's a non-PCH eDP on this crtc, it must be DP_A, and that
2550 * must be driven by its own crtc; no sharing is possible.
2552 list_for_each_entry(encoder, &mode_config->encoder_list, base.head) {
2553 if (encoder->base.crtc != crtc)
2556 switch (encoder->type) {
2557 case INTEL_OUTPUT_EDP:
2558 if (!intel_encoder_is_pch_edp(&encoder->base))
2568 * Enable PCH resources required for PCH ports:
2570 * - FDI training & RX/TX
2571 * - update transcoder timings
2572 * - DP transcoding bits
2575 static void ironlake_pch_enable(struct drm_crtc *crtc)
2577 struct drm_device *dev = crtc->dev;
2578 struct drm_i915_private *dev_priv = dev->dev_private;
2579 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2580 int pipe = intel_crtc->pipe;
2581 u32 reg, temp, transc_sel;
2583 /* For PCH output, training FDI link */
2584 dev_priv->display.fdi_link_train(crtc);
2586 intel_enable_pch_pll(dev_priv, pipe);
2588 if (HAS_PCH_CPT(dev)) {
2589 transc_sel = intel_crtc->use_pll_a ? TRANSC_DPLLA_SEL :
2592 /* Be sure PCH DPLL SEL is set */
2593 temp = I915_READ(PCH_DPLL_SEL);
2595 temp &= ~(TRANSA_DPLLB_SEL);
2596 temp |= (TRANSA_DPLL_ENABLE | TRANSA_DPLLA_SEL);
2597 } else if (pipe == 1) {
2598 temp &= ~(TRANSB_DPLLB_SEL);
2599 temp |= (TRANSB_DPLL_ENABLE | TRANSB_DPLLB_SEL);
2600 } else if (pipe == 2) {
2601 temp &= ~(TRANSC_DPLLB_SEL);
2602 temp |= (TRANSC_DPLL_ENABLE | transc_sel);
2604 I915_WRITE(PCH_DPLL_SEL, temp);
2607 /* set transcoder timing, panel must allow it */
2608 assert_panel_unlocked(dev_priv, pipe);
2609 I915_WRITE(TRANS_HTOTAL(pipe), I915_READ(HTOTAL(pipe)));
2610 I915_WRITE(TRANS_HBLANK(pipe), I915_READ(HBLANK(pipe)));
2611 I915_WRITE(TRANS_HSYNC(pipe), I915_READ(HSYNC(pipe)));
2613 I915_WRITE(TRANS_VTOTAL(pipe), I915_READ(VTOTAL(pipe)));
2614 I915_WRITE(TRANS_VBLANK(pipe), I915_READ(VBLANK(pipe)));
2615 I915_WRITE(TRANS_VSYNC(pipe), I915_READ(VSYNC(pipe)));
2616 I915_WRITE(TRANS_VSYNCSHIFT(pipe), I915_READ(VSYNCSHIFT(pipe)));
2618 intel_fdi_normal_train(crtc);
2620 /* For PCH DP, enable TRANS_DP_CTL */
2621 if (HAS_PCH_CPT(dev) &&
2622 (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT) ||
2623 intel_pipe_has_type(crtc, INTEL_OUTPUT_EDP))) {
2624 u32 bpc = (I915_READ(PIPECONF(pipe)) & PIPE_BPC_MASK) >> 5;
2625 reg = TRANS_DP_CTL(pipe);
2626 temp = I915_READ(reg);
2627 temp &= ~(TRANS_DP_PORT_SEL_MASK |
2628 TRANS_DP_SYNC_MASK |
2630 temp |= (TRANS_DP_OUTPUT_ENABLE |
2631 TRANS_DP_ENH_FRAMING);
2632 temp |= bpc << 9; /* same format but at 11:9 */
2634 if (crtc->mode.flags & DRM_MODE_FLAG_PHSYNC)
2635 temp |= TRANS_DP_HSYNC_ACTIVE_HIGH;
2636 if (crtc->mode.flags & DRM_MODE_FLAG_PVSYNC)
2637 temp |= TRANS_DP_VSYNC_ACTIVE_HIGH;
2639 switch (intel_trans_dp_port_sel(crtc)) {
2641 temp |= TRANS_DP_PORT_SEL_B;
2644 temp |= TRANS_DP_PORT_SEL_C;
2647 temp |= TRANS_DP_PORT_SEL_D;
2650 DRM_DEBUG_KMS("Wrong PCH DP port return. Guess port B\n");
2651 temp |= TRANS_DP_PORT_SEL_B;
2655 I915_WRITE(reg, temp);
2658 intel_enable_transcoder(dev_priv, pipe);
2661 void intel_cpt_verify_modeset(struct drm_device *dev, int pipe)
2663 struct drm_i915_private *dev_priv = dev->dev_private;
2664 int dslreg = PIPEDSL(pipe), tc2reg = TRANS_CHICKEN2(pipe);
2667 temp = I915_READ(dslreg);
2669 if (wait_for(I915_READ(dslreg) != temp, 5)) {
2670 /* Without this, mode sets may fail silently on FDI */
2671 I915_WRITE(tc2reg, TRANS_AUTOTRAIN_GEN_STALL_DIS);
2673 I915_WRITE(tc2reg, 0);
2674 if (wait_for(I915_READ(dslreg) != temp, 5))
2675 DRM_ERROR("mode set failed: pipe %d stuck\n", pipe);
2679 static void ironlake_crtc_enable(struct drm_crtc *crtc)
2681 struct drm_device *dev = crtc->dev;
2682 struct drm_i915_private *dev_priv = dev->dev_private;
2683 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2684 int pipe = intel_crtc->pipe;
2685 int plane = intel_crtc->plane;
2689 if (intel_crtc->active)
2692 intel_crtc->active = true;
2693 intel_update_watermarks(dev);
2695 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
2696 temp = I915_READ(PCH_LVDS);
2697 if ((temp & LVDS_PORT_EN) == 0)
2698 I915_WRITE(PCH_LVDS, temp | LVDS_PORT_EN);
2701 is_pch_port = intel_crtc_driving_pch(crtc);
2704 ironlake_fdi_pll_enable(crtc);
2706 ironlake_fdi_disable(crtc);
2708 /* Enable panel fitting for LVDS */
2709 if (dev_priv->pch_pf_size &&
2710 (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) || HAS_eDP)) {
2711 /* Force use of hard-coded filter coefficients
2712 * as some pre-programmed values are broken,
2715 I915_WRITE(PF_CTL(pipe), PF_ENABLE | PF_FILTER_MED_3x3);
2716 I915_WRITE(PF_WIN_POS(pipe), dev_priv->pch_pf_pos);
2717 I915_WRITE(PF_WIN_SZ(pipe), dev_priv->pch_pf_size);
2721 * On ILK+ LUT must be loaded before the pipe is running but with
2724 intel_crtc_load_lut(crtc);
2726 intel_enable_pipe(dev_priv, pipe, is_pch_port);
2727 intel_enable_plane(dev_priv, plane, pipe);
2730 ironlake_pch_enable(crtc);
2732 mutex_lock(&dev->struct_mutex);
2733 intel_update_fbc(dev);
2734 mutex_unlock(&dev->struct_mutex);
2736 intel_crtc_update_cursor(crtc, true);
2739 static void ironlake_crtc_disable(struct drm_crtc *crtc)
2741 struct drm_device *dev = crtc->dev;
2742 struct drm_i915_private *dev_priv = dev->dev_private;
2743 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2744 int pipe = intel_crtc->pipe;
2745 int plane = intel_crtc->plane;
2748 if (!intel_crtc->active)
2751 intel_crtc_wait_for_pending_flips(crtc);
2752 drm_vblank_off(dev, pipe);
2753 intel_crtc_update_cursor(crtc, false);
2755 intel_disable_plane(dev_priv, plane, pipe);
2757 if (dev_priv->cfb_plane == plane)
2758 intel_disable_fbc(dev);
2760 intel_disable_pipe(dev_priv, pipe);
2763 I915_WRITE(PF_CTL(pipe), 0);
2764 I915_WRITE(PF_WIN_SZ(pipe), 0);
2766 ironlake_fdi_disable(crtc);
2768 /* This is a horrible layering violation; we should be doing this in
2769 * the connector/encoder ->prepare instead, but we don't always have
2770 * enough information there about the config to know whether it will
2771 * actually be necessary or just cause undesired flicker.
2773 intel_disable_pch_ports(dev_priv, pipe);
2775 intel_disable_transcoder(dev_priv, pipe);
2777 if (HAS_PCH_CPT(dev)) {
2778 /* disable TRANS_DP_CTL */
2779 reg = TRANS_DP_CTL(pipe);
2780 temp = I915_READ(reg);
2781 temp &= ~(TRANS_DP_OUTPUT_ENABLE | TRANS_DP_PORT_SEL_MASK);
2782 temp |= TRANS_DP_PORT_SEL_NONE;
2783 I915_WRITE(reg, temp);
2785 /* disable DPLL_SEL */
2786 temp = I915_READ(PCH_DPLL_SEL);
2789 temp &= ~(TRANSA_DPLL_ENABLE | TRANSA_DPLLB_SEL);
2792 temp &= ~(TRANSB_DPLL_ENABLE | TRANSB_DPLLB_SEL);
2795 /* C shares PLL A or B */
2796 temp &= ~(TRANSC_DPLL_ENABLE | TRANSC_DPLLB_SEL);
2801 I915_WRITE(PCH_DPLL_SEL, temp);
2804 /* disable PCH DPLL */
2805 if (!intel_crtc->no_pll)
2806 intel_disable_pch_pll(dev_priv, pipe);
2808 /* Switch from PCDclk to Rawclk */
2809 reg = FDI_RX_CTL(pipe);
2810 temp = I915_READ(reg);
2811 I915_WRITE(reg, temp & ~FDI_PCDCLK);
2813 /* Disable CPU FDI TX PLL */
2814 reg = FDI_TX_CTL(pipe);
2815 temp = I915_READ(reg);
2816 I915_WRITE(reg, temp & ~FDI_TX_PLL_ENABLE);
2821 reg = FDI_RX_CTL(pipe);
2822 temp = I915_READ(reg);
2823 I915_WRITE(reg, temp & ~FDI_RX_PLL_ENABLE);
2825 /* Wait for the clocks to turn off. */
2829 intel_crtc->active = false;
2830 intel_update_watermarks(dev);
2832 mutex_lock(&dev->struct_mutex);
2833 intel_update_fbc(dev);
2834 intel_clear_scanline_wait(dev);
2835 mutex_unlock(&dev->struct_mutex);
2838 static void ironlake_crtc_dpms(struct drm_crtc *crtc, int mode)
2840 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2841 int pipe = intel_crtc->pipe;
2842 int plane = intel_crtc->plane;
2844 /* XXX: When our outputs are all unaware of DPMS modes other than off
2845 * and on, we should map those modes to DRM_MODE_DPMS_OFF in the CRTC.
2848 case DRM_MODE_DPMS_ON:
2849 case DRM_MODE_DPMS_STANDBY:
2850 case DRM_MODE_DPMS_SUSPEND:
2851 DRM_DEBUG_KMS("crtc %d/%d dpms on\n", pipe, plane);
2852 ironlake_crtc_enable(crtc);
2855 case DRM_MODE_DPMS_OFF:
2856 DRM_DEBUG_KMS("crtc %d/%d dpms off\n", pipe, plane);
2857 ironlake_crtc_disable(crtc);
2862 static void intel_crtc_dpms_overlay(struct intel_crtc *intel_crtc, bool enable)
2864 if (!enable && intel_crtc->overlay) {
2865 struct drm_device *dev = intel_crtc->base.dev;
2866 struct drm_i915_private *dev_priv = dev->dev_private;
2868 mutex_lock(&dev->struct_mutex);
2869 dev_priv->mm.interruptible = false;
2870 (void) intel_overlay_switch_off(intel_crtc->overlay);
2871 dev_priv->mm.interruptible = true;
2872 mutex_unlock(&dev->struct_mutex);
2875 /* Let userspace switch the overlay on again. In most cases userspace
2876 * has to recompute where to put it anyway.
2880 static void i9xx_crtc_enable(struct drm_crtc *crtc)
2882 struct drm_device *dev = crtc->dev;
2883 struct drm_i915_private *dev_priv = dev->dev_private;
2884 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2885 int pipe = intel_crtc->pipe;
2886 int plane = intel_crtc->plane;
2888 if (intel_crtc->active)
2891 intel_crtc->active = true;
2892 intel_update_watermarks(dev);
2894 intel_enable_pll(dev_priv, pipe);
2895 intel_enable_pipe(dev_priv, pipe, false);
2896 intel_enable_plane(dev_priv, plane, pipe);
2898 intel_crtc_load_lut(crtc);
2899 intel_update_fbc(dev);
2901 /* Give the overlay scaler a chance to enable if it's on this pipe */
2902 intel_crtc_dpms_overlay(intel_crtc, true);
2903 intel_crtc_update_cursor(crtc, true);
2906 static void i9xx_crtc_disable(struct drm_crtc *crtc)
2908 struct drm_device *dev = crtc->dev;
2909 struct drm_i915_private *dev_priv = dev->dev_private;
2910 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2911 int pipe = intel_crtc->pipe;
2912 int plane = intel_crtc->plane;
2914 if (!intel_crtc->active)
2917 /* Give the overlay scaler a chance to disable if it's on this pipe */
2918 intel_crtc_wait_for_pending_flips(crtc);
2919 drm_vblank_off(dev, pipe);
2920 intel_crtc_dpms_overlay(intel_crtc, false);
2921 intel_crtc_update_cursor(crtc, false);
2923 if (dev_priv->cfb_plane == plane)
2924 intel_disable_fbc(dev);
2926 intel_disable_plane(dev_priv, plane, pipe);
2927 intel_disable_pipe(dev_priv, pipe);
2928 intel_disable_pll(dev_priv, pipe);
2930 intel_crtc->active = false;
2931 intel_update_fbc(dev);
2932 intel_update_watermarks(dev);
2933 intel_clear_scanline_wait(dev);
2936 static void i9xx_crtc_dpms(struct drm_crtc *crtc, int mode)
2938 /* XXX: When our outputs are all unaware of DPMS modes other than off
2939 * and on, we should map those modes to DRM_MODE_DPMS_OFF in the CRTC.
2942 case DRM_MODE_DPMS_ON:
2943 case DRM_MODE_DPMS_STANDBY:
2944 case DRM_MODE_DPMS_SUSPEND:
2945 i9xx_crtc_enable(crtc);
2947 case DRM_MODE_DPMS_OFF:
2948 i9xx_crtc_disable(crtc);
2954 * Sets the power management mode of the pipe and plane.
2956 static void intel_crtc_dpms(struct drm_crtc *crtc, int mode)
2958 struct drm_device *dev = crtc->dev;
2959 struct drm_i915_private *dev_priv = dev->dev_private;
2960 struct drm_i915_master_private *master_priv;
2961 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2962 int pipe = intel_crtc->pipe;
2965 if (intel_crtc->dpms_mode == mode)
2968 intel_crtc->dpms_mode = mode;
2970 dev_priv->display.dpms(crtc, mode);
2972 if (!dev->primary->master)
2975 master_priv = dev->primary->master->driver_priv;
2976 if (!master_priv->sarea_priv)
2979 enabled = crtc->enabled && mode != DRM_MODE_DPMS_OFF;
2983 master_priv->sarea_priv->pipeA_w = enabled ? crtc->mode.hdisplay : 0;
2984 master_priv->sarea_priv->pipeA_h = enabled ? crtc->mode.vdisplay : 0;
2987 master_priv->sarea_priv->pipeB_w = enabled ? crtc->mode.hdisplay : 0;
2988 master_priv->sarea_priv->pipeB_h = enabled ? crtc->mode.vdisplay : 0;
2991 DRM_ERROR("Can't update pipe %c in SAREA\n", pipe_name(pipe));
2996 static void intel_crtc_disable(struct drm_crtc *crtc)
2998 struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
2999 struct drm_device *dev = crtc->dev;
3001 crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF);
3002 assert_plane_disabled(dev->dev_private, to_intel_crtc(crtc)->plane);
3003 assert_pipe_disabled(dev->dev_private, to_intel_crtc(crtc)->pipe);
3006 mutex_lock(&dev->struct_mutex);
3007 intel_unpin_fb_obj(to_intel_framebuffer(crtc->fb)->obj);
3008 mutex_unlock(&dev->struct_mutex);
3012 /* Prepare for a mode set.
3014 * Note we could be a lot smarter here. We need to figure out which outputs
3015 * will be enabled, which disabled (in short, how the config will changes)
3016 * and perform the minimum necessary steps to accomplish that, e.g. updating
3017 * watermarks, FBC configuration, making sure PLLs are programmed correctly,
3018 * panel fitting is in the proper state, etc.
3020 static void i9xx_crtc_prepare(struct drm_crtc *crtc)
3022 i9xx_crtc_disable(crtc);
3025 static void i9xx_crtc_commit(struct drm_crtc *crtc)
3027 i9xx_crtc_enable(crtc);
3030 static void ironlake_crtc_prepare(struct drm_crtc *crtc)
3032 ironlake_crtc_disable(crtc);
3035 static void ironlake_crtc_commit(struct drm_crtc *crtc)
3037 ironlake_crtc_enable(crtc);
3040 void intel_encoder_prepare(struct drm_encoder *encoder)
3042 struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
3043 /* lvds has its own version of prepare see intel_lvds_prepare */
3044 encoder_funcs->dpms(encoder, DRM_MODE_DPMS_OFF);
3047 void intel_encoder_commit(struct drm_encoder *encoder)
3049 struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
3050 struct drm_device *dev = encoder->dev;
3051 struct intel_encoder *intel_encoder = to_intel_encoder(encoder);
3052 struct intel_crtc *intel_crtc = to_intel_crtc(intel_encoder->base.crtc);
3054 /* lvds has its own version of commit see intel_lvds_commit */
3055 encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON);
3057 if (HAS_PCH_CPT(dev))
3058 intel_cpt_verify_modeset(dev, intel_crtc->pipe);
3061 void intel_encoder_destroy(struct drm_encoder *encoder)
3063 struct intel_encoder *intel_encoder = to_intel_encoder(encoder);
3065 drm_encoder_cleanup(encoder);
3066 kfree(intel_encoder);
3069 static bool intel_crtc_mode_fixup(struct drm_crtc *crtc,
3070 struct drm_display_mode *mode,
3071 struct drm_display_mode *adjusted_mode)
3073 struct drm_device *dev = crtc->dev;
3075 if (HAS_PCH_SPLIT(dev)) {
3076 /* FDI link clock is fixed at 2.7G */
3077 if (mode->clock * 3 > IRONLAKE_FDI_FREQ * 4)
3081 /* All interlaced capable intel hw wants timings in frames. */
3082 drm_mode_set_crtcinfo(adjusted_mode, 0);
3087 static int valleyview_get_display_clock_speed(struct drm_device *dev)
3089 return 400000; /* FIXME */
3092 static int i945_get_display_clock_speed(struct drm_device *dev)
3097 static int i915_get_display_clock_speed(struct drm_device *dev)
3102 static int i9xx_misc_get_display_clock_speed(struct drm_device *dev)
3107 static int i915gm_get_display_clock_speed(struct drm_device *dev)
3111 pci_read_config_word(dev->pdev, GCFGC, &gcfgc);
3113 if (gcfgc & GC_LOW_FREQUENCY_ENABLE)
3116 switch (gcfgc & GC_DISPLAY_CLOCK_MASK) {
3117 case GC_DISPLAY_CLOCK_333_MHZ:
3120 case GC_DISPLAY_CLOCK_190_200_MHZ:
3126 static int i865_get_display_clock_speed(struct drm_device *dev)
3131 static int i855_get_display_clock_speed(struct drm_device *dev)
3134 /* Assume that the hardware is in the high speed state. This
3135 * should be the default.
3137 switch (hpllcc & GC_CLOCK_CONTROL_MASK) {
3138 case GC_CLOCK_133_200:
3139 case GC_CLOCK_100_200:
3141 case GC_CLOCK_166_250:
3143 case GC_CLOCK_100_133:
3147 /* Shouldn't happen */
3151 static int i830_get_display_clock_speed(struct drm_device *dev)
3165 fdi_reduce_ratio(u32 *num, u32 *den)
3167 while (*num > 0xffffff || *den > 0xffffff) {
3174 ironlake_compute_m_n(int bits_per_pixel, int nlanes, int pixel_clock,
3175 int link_clock, struct fdi_m_n *m_n)
3177 m_n->tu = 64; /* default size */
3179 /* BUG_ON(pixel_clock > INT_MAX / 36); */
3180 m_n->gmch_m = bits_per_pixel * pixel_clock;
3181 m_n->gmch_n = link_clock * nlanes * 8;
3182 fdi_reduce_ratio(&m_n->gmch_m, &m_n->gmch_n);
3184 m_n->link_m = pixel_clock;
3185 m_n->link_n = link_clock;
3186 fdi_reduce_ratio(&m_n->link_m, &m_n->link_n);
3189 static inline bool intel_panel_use_ssc(struct drm_i915_private *dev_priv)
3191 if (i915_panel_use_ssc >= 0)
3192 return i915_panel_use_ssc != 0;
3193 return dev_priv->lvds_use_ssc
3194 && !(dev_priv->quirks & QUIRK_LVDS_SSC_DISABLE);
3198 * intel_choose_pipe_bpp_dither - figure out what color depth the pipe should send
3199 * @crtc: CRTC structure
3200 * @mode: requested mode
3202 * A pipe may be connected to one or more outputs. Based on the depth of the
3203 * attached framebuffer, choose a good color depth to use on the pipe.
3205 * If possible, match the pipe depth to the fb depth. In some cases, this
3206 * isn't ideal, because the connected output supports a lesser or restricted
3207 * set of depths. Resolve that here:
3208 * LVDS typically supports only 6bpc, so clamp down in that case
3209 * HDMI supports only 8bpc or 12bpc, so clamp to 8bpc with dither for 10bpc
3210 * Displays may support a restricted set as well, check EDID and clamp as
3212 * DP may want to dither down to 6bpc to fit larger modes
3215 * Dithering requirement (i.e. false if display bpc and pipe bpc match,
3216 * true if they don't match).
3218 static bool intel_choose_pipe_bpp_dither(struct drm_crtc *crtc,
3219 unsigned int *pipe_bpp,
3220 struct drm_display_mode *mode)
3222 struct drm_device *dev = crtc->dev;
3223 struct drm_i915_private *dev_priv = dev->dev_private;
3224 struct drm_encoder *encoder;
3225 struct drm_connector *connector;
3226 unsigned int display_bpc = UINT_MAX, bpc;
3228 /* Walk the encoders & connectors on this crtc, get min bpc */
3229 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
3230 struct intel_encoder *intel_encoder = to_intel_encoder(encoder);
3232 if (encoder->crtc != crtc)
3235 if (intel_encoder->type == INTEL_OUTPUT_LVDS) {
3236 unsigned int lvds_bpc;
3238 if ((I915_READ(PCH_LVDS) & LVDS_A3_POWER_MASK) ==
3244 if (lvds_bpc < display_bpc) {
3245 DRM_DEBUG_KMS("clamping display bpc (was %d) to LVDS (%d)\n", display_bpc, lvds_bpc);
3246 display_bpc = lvds_bpc;
3251 if (intel_encoder->type == INTEL_OUTPUT_EDP) {
3252 /* Use VBT settings if we have an eDP panel */
3253 unsigned int edp_bpc = dev_priv->edp.bpp / 3;
3255 if (edp_bpc < display_bpc) {
3256 DRM_DEBUG_KMS("clamping display bpc (was %d) to eDP (%d)\n", display_bpc, edp_bpc);
3257 display_bpc = edp_bpc;
3262 /* Not one of the known troublemakers, check the EDID */
3263 list_for_each_entry(connector, &dev->mode_config.connector_list,
3265 if (connector->encoder != encoder)
3268 /* Don't use an invalid EDID bpc value */
3269 if (connector->display_info.bpc &&
3270 connector->display_info.bpc < display_bpc) {
3271 DRM_DEBUG_KMS("clamping display bpc (was %d) to EDID reported max of %d\n", display_bpc, connector->display_info.bpc);
3272 display_bpc = connector->display_info.bpc;
3277 * HDMI is either 12 or 8, so if the display lets 10bpc sneak
3278 * through, clamp it down. (Note: >12bpc will be caught below.)
3280 if (intel_encoder->type == INTEL_OUTPUT_HDMI) {
3281 if (display_bpc > 8 && display_bpc < 12) {
3282 DRM_DEBUG_KMS("forcing bpc to 12 for HDMI\n");
3285 DRM_DEBUG_KMS("forcing bpc to 8 for HDMI\n");
3291 if (mode->private_flags & INTEL_MODE_DP_FORCE_6BPC) {
3292 DRM_DEBUG_KMS("Dithering DP to 6bpc\n");
3297 * We could just drive the pipe at the highest bpc all the time and
3298 * enable dithering as needed, but that costs bandwidth. So choose
3299 * the minimum value that expresses the full color range of the fb but
3300 * also stays within the max display bpc discovered above.
3303 switch (crtc->fb->depth) {
3305 bpc = 8; /* since we go through a colormap */
3309 bpc = 6; /* min is 18bpp */
3321 DRM_DEBUG("unsupported depth, assuming 24 bits\n");
3322 bpc = min((unsigned int)8, display_bpc);
3326 display_bpc = min(display_bpc, bpc);
3328 DRM_DEBUG_KMS("setting pipe bpc to %d (max display bpc %d)\n",
3331 *pipe_bpp = display_bpc * 3;
3333 return display_bpc != bpc;
3336 static int i9xx_get_refclk(struct drm_crtc *crtc, int num_connectors)
3338 struct drm_device *dev = crtc->dev;
3339 struct drm_i915_private *dev_priv = dev->dev_private;
3342 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) &&
3343 intel_panel_use_ssc(dev_priv) && num_connectors < 2) {
3344 refclk = dev_priv->lvds_ssc_freq * 1000;
3345 DRM_DEBUG_KMS("using SSC reference clock of %d MHz\n",
3347 } else if (!IS_GEN2(dev)) {
3356 static void i9xx_adjust_sdvo_tv_clock(struct drm_display_mode *adjusted_mode,
3357 intel_clock_t *clock)
3359 /* SDVO TV has fixed PLL values depend on its clock range,
3360 this mirrors vbios setting. */
3361 if (adjusted_mode->clock >= 100000
3362 && adjusted_mode->clock < 140500) {
3368 } else if (adjusted_mode->clock >= 140500
3369 && adjusted_mode->clock <= 200000) {
3378 static void i9xx_update_pll_dividers(struct drm_crtc *crtc,
3379 intel_clock_t *clock,
3380 intel_clock_t *reduced_clock)
3382 struct drm_device *dev = crtc->dev;
3383 struct drm_i915_private *dev_priv = dev->dev_private;
3384 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3385 int pipe = intel_crtc->pipe;
3388 if (IS_PINEVIEW(dev)) {
3389 fp = (1 << clock->n) << 16 | clock->m1 << 8 | clock->m2;
3391 fp2 = (1 << reduced_clock->n) << 16 |
3392 reduced_clock->m1 << 8 | reduced_clock->m2;
3394 fp = clock->n << 16 | clock->m1 << 8 | clock->m2;
3396 fp2 = reduced_clock->n << 16 | reduced_clock->m1 << 8 |
3400 I915_WRITE(FP0(pipe), fp);
3402 intel_crtc->lowfreq_avail = false;
3403 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) &&
3404 reduced_clock && i915_powersave) {
3405 I915_WRITE(FP1(pipe), fp2);
3406 intel_crtc->lowfreq_avail = true;
3408 I915_WRITE(FP1(pipe), fp);
3412 static void intel_update_lvds(struct drm_crtc *crtc, intel_clock_t *clock,
3413 struct drm_display_mode *adjusted_mode)
3415 struct drm_device *dev = crtc->dev;
3416 struct drm_i915_private *dev_priv = dev->dev_private;
3417 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3418 int pipe = intel_crtc->pipe;
3421 temp = I915_READ(LVDS);
3422 temp |= LVDS_PORT_EN | LVDS_A0A2_CLKA_POWER_UP;
3424 temp |= LVDS_PIPEB_SELECT;
3426 temp &= ~LVDS_PIPEB_SELECT;
3428 /* set the corresponsding LVDS_BORDER bit */
3429 temp |= dev_priv->lvds_border_bits;
3430 /* Set the B0-B3 data pairs corresponding to whether we're going to
3431 * set the DPLLs for dual-channel mode or not.
3434 temp |= LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP;
3436 temp &= ~(LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP);
3438 /* It would be nice to set 24 vs 18-bit mode (LVDS_A3_POWER_UP)
3439 * appropriately here, but we need to look more thoroughly into how
3440 * panels behave in the two modes.
3442 /* set the dithering flag on LVDS as needed */
3443 if (INTEL_INFO(dev)->gen >= 4) {
3444 if (dev_priv->lvds_dither)
3445 temp |= LVDS_ENABLE_DITHER;
3447 temp &= ~LVDS_ENABLE_DITHER;
3449 temp &= ~(LVDS_HSYNC_POLARITY | LVDS_VSYNC_POLARITY);
3450 if (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC)
3451 temp |= LVDS_HSYNC_POLARITY;
3452 if (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC)
3453 temp |= LVDS_VSYNC_POLARITY;
3454 I915_WRITE(LVDS, temp);
3457 static void i9xx_update_pll(struct drm_crtc *crtc,
3458 struct drm_display_mode *mode,
3459 struct drm_display_mode *adjusted_mode,
3460 intel_clock_t *clock, intel_clock_t *reduced_clock,
3463 struct drm_device *dev = crtc->dev;
3464 struct drm_i915_private *dev_priv = dev->dev_private;
3465 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3466 int pipe = intel_crtc->pipe;
3470 is_sdvo = intel_pipe_has_type(crtc, INTEL_OUTPUT_SDVO) ||
3471 intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI);
3473 dpll = DPLL_VGA_MODE_DIS;
3475 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
3476 dpll |= DPLLB_MODE_LVDS;
3478 dpll |= DPLLB_MODE_DAC_SERIAL;
3480 int pixel_multiplier = intel_mode_get_pixel_multiplier(adjusted_mode);
3481 if (pixel_multiplier > 1) {
3482 if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev))
3483 dpll |= (pixel_multiplier - 1) << SDVO_MULTIPLIER_SHIFT_HIRES;
3485 dpll |= DPLL_DVO_HIGH_SPEED;
3487 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT))
3488 dpll |= DPLL_DVO_HIGH_SPEED;
3490 /* compute bitmask from p1 value */
3491 if (IS_PINEVIEW(dev))
3492 dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW;
3494 dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
3495 if (IS_G4X(dev) && reduced_clock)
3496 dpll |= (1 << (reduced_clock->p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
3498 switch (clock->p2) {
3500 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
3503 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
3506 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
3509 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
3512 if (INTEL_INFO(dev)->gen >= 4)
3513 dpll |= (6 << PLL_LOAD_PULSE_PHASE_SHIFT);
3515 if (is_sdvo && intel_pipe_has_type(crtc, INTEL_OUTPUT_TVOUT))
3516 dpll |= PLL_REF_INPUT_TVCLKINBC;
3517 else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_TVOUT))
3518 /* XXX: just matching BIOS for now */
3519 /* dpll |= PLL_REF_INPUT_TVCLKINBC; */
3521 else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) &&
3522 intel_panel_use_ssc(dev_priv) && num_connectors < 2)
3523 dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
3525 dpll |= PLL_REF_INPUT_DREFCLK;
3527 dpll |= DPLL_VCO_ENABLE;
3528 I915_WRITE(DPLL(pipe), dpll & ~DPLL_VCO_ENABLE);
3529 POSTING_READ(DPLL(pipe));
3532 /* The LVDS pin pair needs to be on before the DPLLs are enabled.
3533 * This is an exception to the general rule that mode_set doesn't turn
3536 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
3537 intel_update_lvds(crtc, clock, adjusted_mode);
3539 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT))
3540 intel_dp_set_m_n(crtc, mode, adjusted_mode);
3542 I915_WRITE(DPLL(pipe), dpll);
3544 /* Wait for the clocks to stabilize. */
3545 POSTING_READ(DPLL(pipe));
3548 if (INTEL_INFO(dev)->gen >= 4) {
3551 temp = intel_mode_get_pixel_multiplier(adjusted_mode);
3553 temp = (temp - 1) << DPLL_MD_UDI_MULTIPLIER_SHIFT;
3557 I915_WRITE(DPLL_MD(pipe), temp);
3559 /* The pixel multiplier can only be updated once the
3560 * DPLL is enabled and the clocks are stable.
3562 * So write it again.
3564 I915_WRITE(DPLL(pipe), dpll);
3568 static void i8xx_update_pll(struct drm_crtc *crtc,
3569 struct drm_display_mode *adjusted_mode,
3570 intel_clock_t *clock,
3573 struct drm_device *dev = crtc->dev;
3574 struct drm_i915_private *dev_priv = dev->dev_private;
3575 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3576 int pipe = intel_crtc->pipe;
3579 dpll = DPLL_VGA_MODE_DIS;
3581 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
3582 dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
3585 dpll |= PLL_P1_DIVIDE_BY_TWO;
3587 dpll |= (clock->p1 - 2) << DPLL_FPA01_P1_POST_DIV_SHIFT;
3589 dpll |= PLL_P2_DIVIDE_BY_4;
3592 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_TVOUT))
3593 /* XXX: just matching BIOS for now */
3594 /* dpll |= PLL_REF_INPUT_TVCLKINBC; */
3596 else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) &&
3597 intel_panel_use_ssc(dev_priv) && num_connectors < 2)
3598 dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
3600 dpll |= PLL_REF_INPUT_DREFCLK;
3602 dpll |= DPLL_VCO_ENABLE;
3603 I915_WRITE(DPLL(pipe), dpll & ~DPLL_VCO_ENABLE);
3604 POSTING_READ(DPLL(pipe));
3607 I915_WRITE(DPLL(pipe), dpll);
3609 /* Wait for the clocks to stabilize. */
3610 POSTING_READ(DPLL(pipe));
3613 /* The LVDS pin pair needs to be on before the DPLLs are enabled.
3614 * This is an exception to the general rule that mode_set doesn't turn
3617 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
3618 intel_update_lvds(crtc, clock, adjusted_mode);
3620 /* The pixel multiplier can only be updated once the
3621 * DPLL is enabled and the clocks are stable.
3623 * So write it again.
3625 I915_WRITE(DPLL(pipe), dpll);
3628 static int i9xx_crtc_mode_set(struct drm_crtc *crtc,
3629 struct drm_display_mode *mode,
3630 struct drm_display_mode *adjusted_mode,
3632 struct drm_framebuffer *old_fb)
3634 struct drm_device *dev = crtc->dev;
3635 struct drm_i915_private *dev_priv = dev->dev_private;
3636 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3637 int pipe = intel_crtc->pipe;
3638 int plane = intel_crtc->plane;
3639 int refclk, num_connectors = 0;
3640 intel_clock_t clock, reduced_clock;
3641 u32 dspcntr, pipeconf, vsyncshift;
3642 bool ok, has_reduced_clock = false, is_sdvo = false;
3643 bool is_lvds = false, is_tv = false, is_dp = false;
3644 struct drm_mode_config *mode_config = &dev->mode_config;
3645 struct intel_encoder *encoder;
3646 const intel_limit_t *limit;
3649 list_for_each_entry(encoder, &mode_config->encoder_list, base.head) {
3650 if (encoder->base.crtc != crtc)
3653 switch (encoder->type) {
3654 case INTEL_OUTPUT_LVDS:
3657 case INTEL_OUTPUT_SDVO:
3658 case INTEL_OUTPUT_HDMI:
3660 if (encoder->needs_tv_clock)
3663 case INTEL_OUTPUT_TVOUT:
3666 case INTEL_OUTPUT_DISPLAYPORT:
3674 refclk = i9xx_get_refclk(crtc, num_connectors);
3677 * Returns a set of divisors for the desired target clock with the given
3678 * refclk, or FALSE. The returned values represent the clock equation:
3679 * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
3681 limit = intel_limit(crtc, refclk);
3682 ok = limit->find_pll(limit, crtc, adjusted_mode->clock, refclk, NULL,
3685 DRM_ERROR("Couldn't find PLL settings for mode!\n");
3689 /* Ensure that the cursor is valid for the new mode before changing... */
3690 intel_crtc_update_cursor(crtc, true);
3692 if (is_lvds && dev_priv->lvds_downclock_avail) {
3694 * Ensure we match the reduced clock's P to the target clock.
3695 * If the clocks don't match, we can't switch the display clock
3696 * by using the FP0/FP1. In such case we will disable the LVDS
3697 * downclock feature.
3699 has_reduced_clock = limit->find_pll(limit, crtc,
3700 dev_priv->lvds_downclock,
3706 if (is_sdvo && is_tv)
3707 i9xx_adjust_sdvo_tv_clock(adjusted_mode, &clock);
3709 i9xx_update_pll_dividers(crtc, &clock, has_reduced_clock ?
3710 &reduced_clock : NULL);
3713 i8xx_update_pll(crtc, adjusted_mode, &clock, num_connectors);
3715 i9xx_update_pll(crtc, mode, adjusted_mode, &clock,
3716 has_reduced_clock ? &reduced_clock : NULL,
3719 /* setup pipeconf */
3720 pipeconf = I915_READ(PIPECONF(pipe));
3722 /* Set up the display plane register */
3723 dspcntr = DISPPLANE_GAMMA_ENABLE;
3726 dspcntr &= ~DISPPLANE_SEL_PIPE_MASK;
3728 dspcntr |= DISPPLANE_SEL_PIPE_B;
3730 if (pipe == 0 && INTEL_INFO(dev)->gen < 4) {
3731 /* Enable pixel doubling when the dot clock is > 90% of the (display)
3734 * XXX: No double-wide on 915GM pipe B. Is that the only reason for the
3738 dev_priv->display.get_display_clock_speed(dev) * 9 / 10)
3739 pipeconf |= PIPECONF_DOUBLE_WIDE;
3741 pipeconf &= ~PIPECONF_DOUBLE_WIDE;
3744 /* default to 8bpc */
3745 pipeconf &= ~(PIPECONF_BPP_MASK | PIPECONF_DITHER_EN);
3747 if (mode->private_flags & INTEL_MODE_DP_FORCE_6BPC) {
3748 pipeconf |= PIPECONF_BPP_6 |
3749 PIPECONF_DITHER_EN |
3750 PIPECONF_DITHER_TYPE_SP;
3754 DRM_DEBUG_KMS("Mode for pipe %c:\n", pipe == 0 ? 'A' : 'B');
3755 drm_mode_debug_printmodeline(mode);
3757 if (HAS_PIPE_CXSR(dev)) {
3758 if (intel_crtc->lowfreq_avail) {
3759 DRM_DEBUG_KMS("enabling CxSR downclocking\n");
3760 pipeconf |= PIPECONF_CXSR_DOWNCLOCK;
3762 DRM_DEBUG_KMS("disabling CxSR downclocking\n");
3763 pipeconf &= ~PIPECONF_CXSR_DOWNCLOCK;
3767 pipeconf &= ~PIPECONF_INTERLACE_MASK;
3768 if (!IS_GEN2(dev) &&
3769 adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) {
3770 pipeconf |= PIPECONF_INTERLACE_W_FIELD_INDICATION;
3771 /* the chip adds 2 halflines automatically */
3772 adjusted_mode->crtc_vtotal -= 1;
3773 adjusted_mode->crtc_vblank_end -= 1;
3774 vsyncshift = adjusted_mode->crtc_hsync_start
3775 - adjusted_mode->crtc_htotal/2;
3777 pipeconf |= PIPECONF_PROGRESSIVE;
3782 I915_WRITE(VSYNCSHIFT(pipe), vsyncshift);
3784 I915_WRITE(HTOTAL(pipe),
3785 (adjusted_mode->crtc_hdisplay - 1) |
3786 ((adjusted_mode->crtc_htotal - 1) << 16));
3787 I915_WRITE(HBLANK(pipe),
3788 (adjusted_mode->crtc_hblank_start - 1) |
3789 ((adjusted_mode->crtc_hblank_end - 1) << 16));
3790 I915_WRITE(HSYNC(pipe),
3791 (adjusted_mode->crtc_hsync_start - 1) |
3792 ((adjusted_mode->crtc_hsync_end - 1) << 16));
3794 I915_WRITE(VTOTAL(pipe),
3795 (adjusted_mode->crtc_vdisplay - 1) |
3796 ((adjusted_mode->crtc_vtotal - 1) << 16));
3797 I915_WRITE(VBLANK(pipe),
3798 (adjusted_mode->crtc_vblank_start - 1) |
3799 ((adjusted_mode->crtc_vblank_end - 1) << 16));
3800 I915_WRITE(VSYNC(pipe),
3801 (adjusted_mode->crtc_vsync_start - 1) |
3802 ((adjusted_mode->crtc_vsync_end - 1) << 16));
3804 /* pipesrc and dspsize control the size that is scaled from,
3805 * which should always be the user's requested size.
3807 I915_WRITE(DSPSIZE(plane),
3808 ((mode->vdisplay - 1) << 16) |
3809 (mode->hdisplay - 1));
3810 I915_WRITE(DSPPOS(plane), 0);
3811 I915_WRITE(PIPESRC(pipe),
3812 ((mode->hdisplay - 1) << 16) | (mode->vdisplay - 1));
3814 I915_WRITE(PIPECONF(pipe), pipeconf);
3815 POSTING_READ(PIPECONF(pipe));
3816 intel_enable_pipe(dev_priv, pipe, false);
3818 intel_wait_for_vblank(dev, pipe);
3820 I915_WRITE(DSPCNTR(plane), dspcntr);
3821 POSTING_READ(DSPCNTR(plane));
3822 intel_enable_plane(dev_priv, plane, pipe);
3824 ret = intel_pipe_set_base(crtc, x, y, old_fb);
3826 intel_update_watermarks(dev);
3832 * Initialize reference clocks when the driver loads
3834 void ironlake_init_pch_refclk(struct drm_device *dev)
3836 struct drm_i915_private *dev_priv = dev->dev_private;
3837 struct drm_mode_config *mode_config = &dev->mode_config;
3838 struct intel_encoder *encoder;
3840 bool has_lvds = false;
3841 bool has_cpu_edp = false;
3842 bool has_pch_edp = false;
3843 bool has_panel = false;
3844 bool has_ck505 = false;
3845 bool can_ssc = false;
3847 /* We need to take the global config into account */
3848 list_for_each_entry(encoder, &mode_config->encoder_list,
3850 switch (encoder->type) {
3851 case INTEL_OUTPUT_LVDS:
3855 case INTEL_OUTPUT_EDP:
3857 if (intel_encoder_is_pch_edp(&encoder->base))
3865 if (HAS_PCH_IBX(dev)) {
3866 has_ck505 = dev_priv->display_clock_mode;
3867 can_ssc = has_ck505;
3873 DRM_DEBUG_KMS("has_panel %d has_lvds %d has_pch_edp %d has_cpu_edp %d has_ck505 %d\n",
3874 has_panel, has_lvds, has_pch_edp, has_cpu_edp,
3877 /* Ironlake: try to setup display ref clock before DPLL
3878 * enabling. This is only under driver's control after
3879 * PCH B stepping, previous chipset stepping should be
3880 * ignoring this setting.
3882 temp = I915_READ(PCH_DREF_CONTROL);
3883 /* Always enable nonspread source */
3884 temp &= ~DREF_NONSPREAD_SOURCE_MASK;
3887 temp |= DREF_NONSPREAD_CK505_ENABLE;
3889 temp |= DREF_NONSPREAD_SOURCE_ENABLE;
3892 temp &= ~DREF_SSC_SOURCE_MASK;
3893 temp |= DREF_SSC_SOURCE_ENABLE;
3895 /* SSC must be turned on before enabling the CPU output */
3896 if (intel_panel_use_ssc(dev_priv) && can_ssc) {
3897 DRM_DEBUG_KMS("Using SSC on panel\n");
3898 temp |= DREF_SSC1_ENABLE;
3900 temp &= ~DREF_SSC1_ENABLE;
3902 /* Get SSC going before enabling the outputs */
3903 I915_WRITE(PCH_DREF_CONTROL, temp);
3904 POSTING_READ(PCH_DREF_CONTROL);
3907 temp &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
3909 /* Enable CPU source on CPU attached eDP */
3911 if (intel_panel_use_ssc(dev_priv) && can_ssc) {
3912 DRM_DEBUG_KMS("Using SSC on eDP\n");
3913 temp |= DREF_CPU_SOURCE_OUTPUT_DOWNSPREAD;
3916 temp |= DREF_CPU_SOURCE_OUTPUT_NONSPREAD;
3918 temp |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
3920 I915_WRITE(PCH_DREF_CONTROL, temp);
3921 POSTING_READ(PCH_DREF_CONTROL);
3924 DRM_DEBUG_KMS("Disabling SSC entirely\n");
3926 temp &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
3928 /* Turn off CPU output */
3929 temp |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
3931 I915_WRITE(PCH_DREF_CONTROL, temp);
3932 POSTING_READ(PCH_DREF_CONTROL);
3935 /* Turn off the SSC source */
3936 temp &= ~DREF_SSC_SOURCE_MASK;
3937 temp |= DREF_SSC_SOURCE_DISABLE;
3940 temp &= ~ DREF_SSC1_ENABLE;
3942 I915_WRITE(PCH_DREF_CONTROL, temp);
3943 POSTING_READ(PCH_DREF_CONTROL);
3948 static int ironlake_get_refclk(struct drm_crtc *crtc)
3950 struct drm_device *dev = crtc->dev;
3951 struct drm_i915_private *dev_priv = dev->dev_private;
3952 struct intel_encoder *encoder;
3953 struct drm_mode_config *mode_config = &dev->mode_config;
3954 struct intel_encoder *edp_encoder = NULL;
3955 int num_connectors = 0;
3956 bool is_lvds = false;
3958 list_for_each_entry(encoder, &mode_config->encoder_list, base.head) {
3959 if (encoder->base.crtc != crtc)
3962 switch (encoder->type) {
3963 case INTEL_OUTPUT_LVDS:
3966 case INTEL_OUTPUT_EDP:
3967 edp_encoder = encoder;
3973 if (is_lvds && intel_panel_use_ssc(dev_priv) && num_connectors < 2) {
3974 DRM_DEBUG_KMS("using SSC reference clock of %d MHz\n",
3975 dev_priv->lvds_ssc_freq);
3976 return dev_priv->lvds_ssc_freq * 1000;
3982 static int ironlake_crtc_mode_set(struct drm_crtc *crtc,
3983 struct drm_display_mode *mode,
3984 struct drm_display_mode *adjusted_mode,
3986 struct drm_framebuffer *old_fb)
3988 struct drm_device *dev = crtc->dev;
3989 struct drm_i915_private *dev_priv = dev->dev_private;
3990 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3991 int pipe = intel_crtc->pipe;
3992 int plane = intel_crtc->plane;
3993 int refclk, num_connectors = 0;
3994 intel_clock_t clock, reduced_clock;
3995 u32 dpll, fp = 0, fp2 = 0, dspcntr, pipeconf;
3996 bool ok, has_reduced_clock = false, is_sdvo = false;
3997 bool is_crt = false, is_lvds = false, is_tv = false, is_dp = false;
3998 struct drm_mode_config *mode_config = &dev->mode_config;
3999 struct intel_encoder *encoder, *edp_encoder = NULL;
4000 const intel_limit_t *limit;
4002 struct fdi_m_n m_n = {0};
4004 int target_clock, pixel_multiplier, lane, link_bw, factor;
4005 unsigned int pipe_bpp;
4007 bool is_cpu_edp = false, is_pch_edp = false;
4009 list_for_each_entry(encoder, &mode_config->encoder_list, base.head) {
4010 if (encoder->base.crtc != crtc)
4013 switch (encoder->type) {
4014 case INTEL_OUTPUT_LVDS:
4017 case INTEL_OUTPUT_SDVO:
4018 case INTEL_OUTPUT_HDMI:
4020 if (encoder->needs_tv_clock)
4023 case INTEL_OUTPUT_TVOUT:
4026 case INTEL_OUTPUT_ANALOG:
4029 case INTEL_OUTPUT_DISPLAYPORT:
4032 case INTEL_OUTPUT_EDP:
4034 if (intel_encoder_is_pch_edp(&encoder->base))
4038 edp_encoder = encoder;
4045 refclk = ironlake_get_refclk(crtc);
4048 * Returns a set of divisors for the desired target clock with the given
4049 * refclk, or FALSE. The returned values represent the clock equation:
4050 * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
4052 limit = intel_limit(crtc, refclk);
4053 ok = limit->find_pll(limit, crtc, adjusted_mode->clock, refclk, NULL,
4056 DRM_ERROR("Couldn't find PLL settings for mode!\n");
4060 /* Ensure that the cursor is valid for the new mode before changing... */
4061 intel_crtc_update_cursor(crtc, true);
4063 if (is_lvds && dev_priv->lvds_downclock_avail) {
4065 * Ensure we match the reduced clock's P to the target clock.
4066 * If the clocks don't match, we can't switch the display clock
4067 * by using the FP0/FP1. In such case we will disable the LVDS
4068 * downclock feature.
4070 has_reduced_clock = limit->find_pll(limit, crtc,
4071 dev_priv->lvds_downclock,
4076 /* SDVO TV has fixed PLL values depend on its clock range,
4077 this mirrors vbios setting. */
4078 if (is_sdvo && is_tv) {
4079 if (adjusted_mode->clock >= 100000
4080 && adjusted_mode->clock < 140500) {
4086 } else if (adjusted_mode->clock >= 140500
4087 && adjusted_mode->clock <= 200000) {
4097 pixel_multiplier = intel_mode_get_pixel_multiplier(adjusted_mode);
4099 /* CPU eDP doesn't require FDI link, so just set DP M/N
4100 according to current link config */
4102 target_clock = mode->clock;
4103 intel_edp_link_config(edp_encoder, &lane, &link_bw);
4105 /* [e]DP over FDI requires target mode clock
4106 instead of link clock */
4108 target_clock = mode->clock;
4110 target_clock = adjusted_mode->clock;
4112 /* FDI is a binary signal running at ~2.7GHz, encoding
4113 * each output octet as 10 bits. The actual frequency
4114 * is stored as a divider into a 100MHz clock, and the
4115 * mode pixel clock is stored in units of 1KHz.
4116 * Hence the bw of each lane in terms of the mode signal
4119 link_bw = intel_fdi_link_freq(dev) * MHz(100)/KHz(1)/10;
4122 /* determine panel color depth */
4123 temp = I915_READ(PIPECONF(pipe));
4124 temp &= ~PIPE_BPC_MASK;
4125 dither = intel_choose_pipe_bpp_dither(crtc, &pipe_bpp, mode);
4140 WARN(1, "intel_choose_pipe_bpp returned invalid value %d\n",
4147 intel_crtc->bpp = pipe_bpp;
4148 I915_WRITE(PIPECONF(pipe), temp);
4152 * Account for spread spectrum to avoid
4153 * oversubscribing the link. Max center spread
4154 * is 2.5%; use 5% for safety's sake.
4156 u32 bps = target_clock * intel_crtc->bpp * 21 / 20;
4157 lane = bps / (link_bw * 8) + 1;
4160 intel_crtc->fdi_lanes = lane;
4162 if (pixel_multiplier > 1)
4163 link_bw *= pixel_multiplier;
4164 ironlake_compute_m_n(intel_crtc->bpp, lane, target_clock, link_bw,
4167 fp = clock.n << 16 | clock.m1 << 8 | clock.m2;
4168 if (has_reduced_clock)
4169 fp2 = reduced_clock.n << 16 | reduced_clock.m1 << 8 |
4172 /* Enable autotuning of the PLL clock (if permissible) */
4175 if ((intel_panel_use_ssc(dev_priv) &&
4176 dev_priv->lvds_ssc_freq == 100) ||
4177 (I915_READ(PCH_LVDS) & LVDS_CLKB_POWER_MASK) == LVDS_CLKB_POWER_UP)
4179 } else if (is_sdvo && is_tv)
4182 if (clock.m < factor * clock.n)
4188 dpll |= DPLLB_MODE_LVDS;
4190 dpll |= DPLLB_MODE_DAC_SERIAL;
4192 int pixel_multiplier = intel_mode_get_pixel_multiplier(adjusted_mode);
4193 if (pixel_multiplier > 1) {
4194 dpll |= (pixel_multiplier - 1) << PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT;
4196 dpll |= DPLL_DVO_HIGH_SPEED;
4198 if (is_dp && !is_cpu_edp)
4199 dpll |= DPLL_DVO_HIGH_SPEED;
4201 /* compute bitmask from p1 value */
4202 dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
4204 dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
4208 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
4211 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
4214 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
4217 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
4221 if (is_sdvo && is_tv)
4222 dpll |= PLL_REF_INPUT_TVCLKINBC;
4224 /* XXX: just matching BIOS for now */
4225 /* dpll |= PLL_REF_INPUT_TVCLKINBC; */
4227 else if (is_lvds && intel_panel_use_ssc(dev_priv) && num_connectors < 2)
4228 dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
4230 dpll |= PLL_REF_INPUT_DREFCLK;
4232 /* setup pipeconf */
4233 pipeconf = I915_READ(PIPECONF(pipe));
4235 /* Set up the display plane register */
4236 dspcntr = DISPPLANE_GAMMA_ENABLE;
4238 DRM_DEBUG_KMS("Mode for pipe %d:\n", pipe);
4239 drm_mode_debug_printmodeline(mode);
4241 /* PCH eDP needs FDI, but CPU eDP does not */
4242 if (!intel_crtc->no_pll) {
4244 I915_WRITE(PCH_FP0(pipe), fp);
4245 I915_WRITE(PCH_DPLL(pipe), dpll & ~DPLL_VCO_ENABLE);
4247 POSTING_READ(PCH_DPLL(pipe));
4251 if (dpll == (I915_READ(PCH_DPLL(0)) & 0x7fffffff) &&
4252 fp == I915_READ(PCH_FP0(0))) {
4253 intel_crtc->use_pll_a = true;
4254 DRM_DEBUG_KMS("using pipe a dpll\n");
4255 } else if (dpll == (I915_READ(PCH_DPLL(1)) & 0x7fffffff) &&
4256 fp == I915_READ(PCH_FP0(1))) {
4257 intel_crtc->use_pll_a = false;
4258 DRM_DEBUG_KMS("using pipe b dpll\n");
4260 DRM_DEBUG_KMS("no matching PLL configuration for pipe 2\n");
4265 /* The LVDS pin pair needs to be on before the DPLLs are enabled.
4266 * This is an exception to the general rule that mode_set doesn't turn
4270 temp = I915_READ(PCH_LVDS);
4271 temp |= LVDS_PORT_EN | LVDS_A0A2_CLKA_POWER_UP;
4272 if (HAS_PCH_CPT(dev)) {
4273 temp &= ~PORT_TRANS_SEL_MASK;
4274 temp |= PORT_TRANS_SEL_CPT(pipe);
4277 temp |= LVDS_PIPEB_SELECT;
4279 temp &= ~LVDS_PIPEB_SELECT;
4282 /* set the corresponsding LVDS_BORDER bit */
4283 temp |= dev_priv->lvds_border_bits;
4284 /* Set the B0-B3 data pairs corresponding to whether we're going to
4285 * set the DPLLs for dual-channel mode or not.
4288 temp |= LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP;
4290 temp &= ~(LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP);
4292 /* It would be nice to set 24 vs 18-bit mode (LVDS_A3_POWER_UP)
4293 * appropriately here, but we need to look more thoroughly into how
4294 * panels behave in the two modes.
4296 temp &= ~(LVDS_HSYNC_POLARITY | LVDS_VSYNC_POLARITY);
4297 if (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC)
4298 temp |= LVDS_HSYNC_POLARITY;
4299 if (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC)
4300 temp |= LVDS_VSYNC_POLARITY;
4301 I915_WRITE(PCH_LVDS, temp);
4304 pipeconf &= ~PIPECONF_DITHER_EN;
4305 pipeconf &= ~PIPECONF_DITHER_TYPE_MASK;
4306 if ((is_lvds && dev_priv->lvds_dither) || dither) {
4307 pipeconf |= PIPECONF_DITHER_EN;
4308 pipeconf |= PIPECONF_DITHER_TYPE_SP;
4310 if (is_dp && !is_cpu_edp) {
4311 intel_dp_set_m_n(crtc, mode, adjusted_mode);
4313 /* For non-DP output, clear any trans DP clock recovery setting.*/
4314 I915_WRITE(TRANSDATA_M1(pipe), 0);
4315 I915_WRITE(TRANSDATA_N1(pipe), 0);
4316 I915_WRITE(TRANSDPLINK_M1(pipe), 0);
4317 I915_WRITE(TRANSDPLINK_N1(pipe), 0);
4320 if (!intel_crtc->no_pll && (!edp_encoder || is_pch_edp)) {
4321 I915_WRITE(PCH_DPLL(pipe), dpll);
4323 /* Wait for the clocks to stabilize. */
4324 POSTING_READ(PCH_DPLL(pipe));
4327 /* The pixel multiplier can only be updated once the
4328 * DPLL is enabled and the clocks are stable.
4330 * So write it again.
4332 I915_WRITE(PCH_DPLL(pipe), dpll);
4335 intel_crtc->lowfreq_avail = false;
4336 if (!intel_crtc->no_pll) {
4337 if (is_lvds && has_reduced_clock && i915_powersave) {
4338 I915_WRITE(PCH_FP1(pipe), fp2);
4339 intel_crtc->lowfreq_avail = true;
4340 if (HAS_PIPE_CXSR(dev)) {
4341 DRM_DEBUG_KMS("enabling CxSR downclocking\n");
4342 pipeconf |= PIPECONF_CXSR_DOWNCLOCK;
4345 I915_WRITE(PCH_FP1(pipe), fp);
4346 if (HAS_PIPE_CXSR(dev)) {
4347 DRM_DEBUG_KMS("disabling CxSR downclocking\n");
4348 pipeconf &= ~PIPECONF_CXSR_DOWNCLOCK;
4353 pipeconf &= ~PIPECONF_INTERLACE_MASK;
4354 if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) {
4355 pipeconf |= PIPECONF_INTERLACED_ILK;
4356 /* the chip adds 2 halflines automatically */
4357 adjusted_mode->crtc_vtotal -= 1;
4358 adjusted_mode->crtc_vblank_end -= 1;
4359 I915_WRITE(VSYNCSHIFT(pipe),
4360 adjusted_mode->crtc_hsync_start
4361 - adjusted_mode->crtc_htotal/2);
4363 pipeconf |= PIPECONF_PROGRESSIVE;
4364 I915_WRITE(VSYNCSHIFT(pipe), 0);
4367 I915_WRITE(HTOTAL(pipe),
4368 (adjusted_mode->crtc_hdisplay - 1) |
4369 ((adjusted_mode->crtc_htotal - 1) << 16));
4370 I915_WRITE(HBLANK(pipe),
4371 (adjusted_mode->crtc_hblank_start - 1) |
4372 ((adjusted_mode->crtc_hblank_end - 1) << 16));
4373 I915_WRITE(HSYNC(pipe),
4374 (adjusted_mode->crtc_hsync_start - 1) |
4375 ((adjusted_mode->crtc_hsync_end - 1) << 16));
4377 I915_WRITE(VTOTAL(pipe),
4378 (adjusted_mode->crtc_vdisplay - 1) |
4379 ((adjusted_mode->crtc_vtotal - 1) << 16));
4380 I915_WRITE(VBLANK(pipe),
4381 (adjusted_mode->crtc_vblank_start - 1) |
4382 ((adjusted_mode->crtc_vblank_end - 1) << 16));
4383 I915_WRITE(VSYNC(pipe),
4384 (adjusted_mode->crtc_vsync_start - 1) |
4385 ((adjusted_mode->crtc_vsync_end - 1) << 16));
4387 /* pipesrc controls the size that is scaled from, which should
4388 * always be the user's requested size.
4390 I915_WRITE(PIPESRC(pipe),
4391 ((mode->hdisplay - 1) << 16) | (mode->vdisplay - 1));
4393 I915_WRITE(PIPE_DATA_M1(pipe), TU_SIZE(m_n.tu) | m_n.gmch_m);
4394 I915_WRITE(PIPE_DATA_N1(pipe), m_n.gmch_n);
4395 I915_WRITE(PIPE_LINK_M1(pipe), m_n.link_m);
4396 I915_WRITE(PIPE_LINK_N1(pipe), m_n.link_n);
4399 ironlake_set_pll_edp(crtc, adjusted_mode->clock);
4401 I915_WRITE(PIPECONF(pipe), pipeconf);
4402 POSTING_READ(PIPECONF(pipe));
4404 intel_wait_for_vblank(dev, pipe);
4406 I915_WRITE(DSPCNTR(plane), dspcntr);
4407 POSTING_READ(DSPCNTR(plane));
4409 ret = intel_pipe_set_base(crtc, x, y, old_fb);
4411 intel_update_watermarks(dev);
4416 static int intel_crtc_mode_set(struct drm_crtc *crtc,
4417 struct drm_display_mode *mode,
4418 struct drm_display_mode *adjusted_mode,
4420 struct drm_framebuffer *old_fb)
4422 struct drm_device *dev = crtc->dev;
4423 struct drm_i915_private *dev_priv = dev->dev_private;
4424 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4425 int pipe = intel_crtc->pipe;
4428 drm_vblank_pre_modeset(dev, pipe);
4430 ret = dev_priv->display.crtc_mode_set(crtc, mode, adjusted_mode,
4432 drm_vblank_post_modeset(dev, pipe);
4435 intel_crtc->dpms_mode = DRM_MODE_DPMS_OFF;
4437 intel_crtc->dpms_mode = DRM_MODE_DPMS_ON;
4442 static bool intel_eld_uptodate(struct drm_connector *connector,
4443 int reg_eldv, uint32_t bits_eldv,
4444 int reg_elda, uint32_t bits_elda,
4447 struct drm_i915_private *dev_priv = connector->dev->dev_private;
4448 uint8_t *eld = connector->eld;
4451 i = I915_READ(reg_eldv);
4460 i = I915_READ(reg_elda);
4462 I915_WRITE(reg_elda, i);
4464 for (i = 0; i < eld[2]; i++)
4465 if (I915_READ(reg_edid) != *((uint32_t *)eld + i))
4471 static void g4x_write_eld(struct drm_connector *connector,
4472 struct drm_crtc *crtc)
4474 struct drm_i915_private *dev_priv = connector->dev->dev_private;
4475 uint8_t *eld = connector->eld;
4480 i = I915_READ(G4X_AUD_VID_DID);
4482 if (i == INTEL_AUDIO_DEVBLC || i == INTEL_AUDIO_DEVCL)
4483 eldv = G4X_ELDV_DEVCL_DEVBLC;
4485 eldv = G4X_ELDV_DEVCTG;
4487 if (intel_eld_uptodate(connector,
4488 G4X_AUD_CNTL_ST, eldv,
4489 G4X_AUD_CNTL_ST, G4X_ELD_ADDR,
4490 G4X_HDMIW_HDMIEDID))
4493 i = I915_READ(G4X_AUD_CNTL_ST);
4494 i &= ~(eldv | G4X_ELD_ADDR);
4495 len = (i >> 9) & 0x1f; /* ELD buffer size */
4496 I915_WRITE(G4X_AUD_CNTL_ST, i);
4501 len = min_t(uint8_t, eld[2], len);
4502 DRM_DEBUG_DRIVER("ELD size %d\n", len);
4503 for (i = 0; i < len; i++)
4504 I915_WRITE(G4X_HDMIW_HDMIEDID, *((uint32_t *)eld + i));
4506 i = I915_READ(G4X_AUD_CNTL_ST);
4508 I915_WRITE(G4X_AUD_CNTL_ST, i);
4511 static void ironlake_write_eld(struct drm_connector *connector,
4512 struct drm_crtc *crtc)
4514 struct drm_i915_private *dev_priv = connector->dev->dev_private;
4515 uint8_t *eld = connector->eld;
4524 if (HAS_PCH_IBX(connector->dev)) {
4525 hdmiw_hdmiedid = IBX_HDMIW_HDMIEDID_A;
4526 aud_config = IBX_AUD_CONFIG_A;
4527 aud_cntl_st = IBX_AUD_CNTL_ST_A;
4528 aud_cntrl_st2 = IBX_AUD_CNTL_ST2;
4530 hdmiw_hdmiedid = CPT_HDMIW_HDMIEDID_A;
4531 aud_config = CPT_AUD_CONFIG_A;
4532 aud_cntl_st = CPT_AUD_CNTL_ST_A;
4533 aud_cntrl_st2 = CPT_AUD_CNTRL_ST2;
4536 i = to_intel_crtc(crtc)->pipe;
4537 hdmiw_hdmiedid += i * 0x100;
4538 aud_cntl_st += i * 0x100;
4539 aud_config += i * 0x100;
4541 DRM_DEBUG_DRIVER("ELD on pipe %c\n", pipe_name(i));
4543 i = I915_READ(aud_cntl_st);
4544 i = (i >> 29) & 0x3; /* DIP_Port_Select, 0x1 = PortB */
4546 DRM_DEBUG_DRIVER("Audio directed to unknown port\n");
4547 /* operate blindly on all ports */
4548 eldv = IBX_ELD_VALIDB;
4549 eldv |= IBX_ELD_VALIDB << 4;
4550 eldv |= IBX_ELD_VALIDB << 8;
4552 DRM_DEBUG_DRIVER("ELD on port %c\n", 'A' + i);
4553 eldv = IBX_ELD_VALIDB << ((i - 1) * 4);
4556 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT)) {
4557 DRM_DEBUG_DRIVER("ELD: DisplayPort detected\n");
4558 eld[5] |= (1 << 2); /* Conn_Type, 0x1 = DisplayPort */
4559 I915_WRITE(aud_config, AUD_CONFIG_N_VALUE_INDEX); /* 0x1 = DP */
4561 I915_WRITE(aud_config, 0);
4563 if (intel_eld_uptodate(connector,
4564 aud_cntrl_st2, eldv,
4565 aud_cntl_st, IBX_ELD_ADDRESS,
4569 i = I915_READ(aud_cntrl_st2);
4571 I915_WRITE(aud_cntrl_st2, i);
4576 i = I915_READ(aud_cntl_st);
4577 i &= ~IBX_ELD_ADDRESS;
4578 I915_WRITE(aud_cntl_st, i);
4580 len = min_t(uint8_t, eld[2], 21); /* 84 bytes of hw ELD buffer */
4581 DRM_DEBUG_DRIVER("ELD size %d\n", len);
4582 for (i = 0; i < len; i++)
4583 I915_WRITE(hdmiw_hdmiedid, *((uint32_t *)eld + i));
4585 i = I915_READ(aud_cntrl_st2);
4587 I915_WRITE(aud_cntrl_st2, i);
4590 void intel_write_eld(struct drm_encoder *encoder,
4591 struct drm_display_mode *mode)
4593 struct drm_crtc *crtc = encoder->crtc;
4594 struct drm_connector *connector;
4595 struct drm_device *dev = encoder->dev;
4596 struct drm_i915_private *dev_priv = dev->dev_private;
4598 connector = drm_select_eld(encoder, mode);
4602 DRM_DEBUG_DRIVER("ELD on [CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
4604 drm_get_connector_name(connector),
4605 connector->encoder->base.id,
4606 drm_get_encoder_name(connector->encoder));
4608 connector->eld[6] = drm_av_sync_delay(connector, mode) / 2;
4610 if (dev_priv->display.write_eld)
4611 dev_priv->display.write_eld(connector, crtc);
4614 /** Loads the palette/gamma unit for the CRTC with the prepared values */
4615 void intel_crtc_load_lut(struct drm_crtc *crtc)
4617 struct drm_device *dev = crtc->dev;
4618 struct drm_i915_private *dev_priv = dev->dev_private;
4619 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4620 int palreg = PALETTE(intel_crtc->pipe);
4623 /* The clocks have to be on to load the palette. */
4624 if (!crtc->enabled || !intel_crtc->active)
4627 /* use legacy palette for Ironlake */
4628 if (HAS_PCH_SPLIT(dev))
4629 palreg = LGC_PALETTE(intel_crtc->pipe);
4631 for (i = 0; i < 256; i++) {
4632 I915_WRITE(palreg + 4 * i,
4633 (intel_crtc->lut_r[i] << 16) |
4634 (intel_crtc->lut_g[i] << 8) |
4635 intel_crtc->lut_b[i]);
4639 static void i845_update_cursor(struct drm_crtc *crtc, u32 base)
4641 struct drm_device *dev = crtc->dev;
4642 struct drm_i915_private *dev_priv = dev->dev_private;
4643 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4644 bool visible = base != 0;
4647 if (intel_crtc->cursor_visible == visible)
4650 cntl = I915_READ(_CURACNTR);
4652 /* On these chipsets we can only modify the base whilst
4653 * the cursor is disabled.
4655 I915_WRITE(_CURABASE, base);
4657 cntl &= ~(CURSOR_FORMAT_MASK);
4658 /* XXX width must be 64, stride 256 => 0x00 << 28 */
4659 cntl |= CURSOR_ENABLE |
4660 CURSOR_GAMMA_ENABLE |
4663 cntl &= ~(CURSOR_ENABLE | CURSOR_GAMMA_ENABLE);
4664 I915_WRITE(_CURACNTR, cntl);
4666 intel_crtc->cursor_visible = visible;
4669 static void i9xx_update_cursor(struct drm_crtc *crtc, u32 base)
4671 struct drm_device *dev = crtc->dev;
4672 struct drm_i915_private *dev_priv = dev->dev_private;
4673 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4674 int pipe = intel_crtc->pipe;
4675 bool visible = base != 0;
4677 if (intel_crtc->cursor_visible != visible) {
4678 uint32_t cntl = I915_READ(CURCNTR(pipe));
4680 cntl &= ~(CURSOR_MODE | MCURSOR_PIPE_SELECT);
4681 cntl |= CURSOR_MODE_64_ARGB_AX | MCURSOR_GAMMA_ENABLE;
4682 cntl |= pipe << 28; /* Connect to correct pipe */
4684 cntl &= ~(CURSOR_MODE | MCURSOR_GAMMA_ENABLE);
4685 cntl |= CURSOR_MODE_DISABLE;
4687 I915_WRITE(CURCNTR(pipe), cntl);
4689 intel_crtc->cursor_visible = visible;
4691 /* and commit changes on next vblank */
4692 I915_WRITE(CURBASE(pipe), base);
4695 static void ivb_update_cursor(struct drm_crtc *crtc, u32 base)
4697 struct drm_device *dev = crtc->dev;
4698 struct drm_i915_private *dev_priv = dev->dev_private;
4699 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4700 int pipe = intel_crtc->pipe;
4701 bool visible = base != 0;
4703 if (intel_crtc->cursor_visible != visible) {
4704 uint32_t cntl = I915_READ(CURCNTR_IVB(pipe));
4706 cntl &= ~CURSOR_MODE;
4707 cntl |= CURSOR_MODE_64_ARGB_AX | MCURSOR_GAMMA_ENABLE;
4709 cntl &= ~(CURSOR_MODE | MCURSOR_GAMMA_ENABLE);
4710 cntl |= CURSOR_MODE_DISABLE;
4712 I915_WRITE(CURCNTR_IVB(pipe), cntl);
4714 intel_crtc->cursor_visible = visible;
4716 /* and commit changes on next vblank */
4717 I915_WRITE(CURBASE_IVB(pipe), base);
4720 /* If no-part of the cursor is visible on the framebuffer, then the GPU may hang... */
4721 static void intel_crtc_update_cursor(struct drm_crtc *crtc,
4724 struct drm_device *dev = crtc->dev;
4725 struct drm_i915_private *dev_priv = dev->dev_private;
4726 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4727 int pipe = intel_crtc->pipe;
4728 int x = intel_crtc->cursor_x;
4729 int y = intel_crtc->cursor_y;
4735 if (on && crtc->enabled && crtc->fb) {
4736 base = intel_crtc->cursor_addr;
4737 if (x > (int) crtc->fb->width)
4740 if (y > (int) crtc->fb->height)
4746 if (x + intel_crtc->cursor_width < 0)
4749 pos |= CURSOR_POS_SIGN << CURSOR_X_SHIFT;
4752 pos |= x << CURSOR_X_SHIFT;
4755 if (y + intel_crtc->cursor_height < 0)
4758 pos |= CURSOR_POS_SIGN << CURSOR_Y_SHIFT;
4761 pos |= y << CURSOR_Y_SHIFT;
4763 visible = base != 0;
4764 if (!visible && !intel_crtc->cursor_visible)
4767 if (IS_IVYBRIDGE(dev) || IS_HASWELL(dev)) {
4768 I915_WRITE(CURPOS_IVB(pipe), pos);
4769 ivb_update_cursor(crtc, base);
4771 I915_WRITE(CURPOS(pipe), pos);
4772 if (IS_845G(dev) || IS_I865G(dev))
4773 i845_update_cursor(crtc, base);
4775 i9xx_update_cursor(crtc, base);
4779 intel_mark_busy(dev, to_intel_framebuffer(crtc->fb)->obj);
4782 static int intel_crtc_cursor_set(struct drm_crtc *crtc,
4783 struct drm_file *file,
4785 uint32_t width, uint32_t height)
4787 struct drm_device *dev = crtc->dev;
4788 struct drm_i915_private *dev_priv = dev->dev_private;
4789 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4790 struct drm_i915_gem_object *obj;
4794 DRM_DEBUG_KMS("\n");
4796 /* if we want to turn off the cursor ignore width and height */
4798 DRM_DEBUG_KMS("cursor off\n");
4801 mutex_lock(&dev->struct_mutex);
4805 /* Currently we only support 64x64 cursors */
4806 if (width != 64 || height != 64) {
4807 DRM_ERROR("we currently only support 64x64 cursors\n");
4811 obj = to_intel_bo(drm_gem_object_lookup(dev, file, handle));
4812 if (&obj->base == NULL)
4815 if (obj->base.size < width * height * 4) {
4816 DRM_ERROR("buffer is to small\n");
4821 /* we only need to pin inside GTT if cursor is non-phy */
4822 mutex_lock(&dev->struct_mutex);
4823 if (!dev_priv->info->cursor_needs_physical) {
4824 if (obj->tiling_mode) {
4825 DRM_ERROR("cursor cannot be tiled\n");
4830 ret = i915_gem_object_pin_to_display_plane(obj, 0, NULL);
4832 DRM_ERROR("failed to move cursor bo into the GTT\n");
4836 ret = i915_gem_object_put_fence(obj);
4838 DRM_ERROR("failed to release fence for cursor");
4842 addr = obj->gtt_offset;
4844 int align = IS_I830(dev) ? 16 * 1024 : 256;
4845 ret = i915_gem_attach_phys_object(dev, obj,
4846 (intel_crtc->pipe == 0) ? I915_GEM_PHYS_CURSOR_0 : I915_GEM_PHYS_CURSOR_1,
4849 DRM_ERROR("failed to attach phys object\n");
4852 addr = obj->phys_obj->handle->busaddr;
4856 I915_WRITE(CURSIZE, (height << 12) | width);
4859 if (intel_crtc->cursor_bo) {
4860 if (dev_priv->info->cursor_needs_physical) {
4861 if (intel_crtc->cursor_bo != obj)
4862 i915_gem_detach_phys_object(dev, intel_crtc->cursor_bo);
4864 i915_gem_object_unpin(intel_crtc->cursor_bo);
4865 drm_gem_object_unreference(&intel_crtc->cursor_bo->base);
4868 mutex_unlock(&dev->struct_mutex);
4870 intel_crtc->cursor_addr = addr;
4871 intel_crtc->cursor_bo = obj;
4872 intel_crtc->cursor_width = width;
4873 intel_crtc->cursor_height = height;
4875 intel_crtc_update_cursor(crtc, true);
4879 i915_gem_object_unpin(obj);
4881 mutex_unlock(&dev->struct_mutex);
4883 drm_gem_object_unreference_unlocked(&obj->base);
4887 static int intel_crtc_cursor_move(struct drm_crtc *crtc, int x, int y)
4889 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4891 intel_crtc->cursor_x = x;
4892 intel_crtc->cursor_y = y;
4894 intel_crtc_update_cursor(crtc, true);
4899 /** Sets the color ramps on behalf of RandR */
4900 void intel_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
4901 u16 blue, int regno)
4903 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4905 intel_crtc->lut_r[regno] = red >> 8;
4906 intel_crtc->lut_g[regno] = green >> 8;
4907 intel_crtc->lut_b[regno] = blue >> 8;
4910 void intel_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
4911 u16 *blue, int regno)
4913 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4915 *red = intel_crtc->lut_r[regno] << 8;
4916 *green = intel_crtc->lut_g[regno] << 8;
4917 *blue = intel_crtc->lut_b[regno] << 8;
4920 static void intel_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
4921 u16 *blue, uint32_t start, uint32_t size)
4923 int end = (start + size > 256) ? 256 : start + size, i;
4924 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4926 for (i = start; i < end; i++) {
4927 intel_crtc->lut_r[i] = red[i] >> 8;
4928 intel_crtc->lut_g[i] = green[i] >> 8;
4929 intel_crtc->lut_b[i] = blue[i] >> 8;
4932 intel_crtc_load_lut(crtc);
4936 * Get a pipe with a simple mode set on it for doing load-based monitor
4939 * It will be up to the load-detect code to adjust the pipe as appropriate for
4940 * its requirements. The pipe will be connected to no other encoders.
4942 * Currently this code will only succeed if there is a pipe with no encoders
4943 * configured for it. In the future, it could choose to temporarily disable
4944 * some outputs to free up a pipe for its use.
4946 * \return crtc, or NULL if no pipes are available.
4949 /* VESA 640x480x72Hz mode to set on the pipe */
4950 static struct drm_display_mode load_detect_mode = {
4951 DRM_MODE("640x480", DRM_MODE_TYPE_DEFAULT, 31500, 640, 664,
4952 704, 832, 0, 480, 489, 491, 520, 0, DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
4955 static struct drm_framebuffer *
4956 intel_framebuffer_create(struct drm_device *dev,
4957 struct drm_mode_fb_cmd2 *mode_cmd,
4958 struct drm_i915_gem_object *obj)
4960 struct intel_framebuffer *intel_fb;
4963 intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
4965 drm_gem_object_unreference_unlocked(&obj->base);
4966 return ERR_PTR(-ENOMEM);
4969 ret = intel_framebuffer_init(dev, intel_fb, mode_cmd, obj);
4971 drm_gem_object_unreference_unlocked(&obj->base);
4973 return ERR_PTR(ret);
4976 return &intel_fb->base;
4980 intel_framebuffer_pitch_for_width(int width, int bpp)
4982 u32 pitch = DIV_ROUND_UP(width * bpp, 8);
4983 return ALIGN(pitch, 64);
4987 intel_framebuffer_size_for_mode(struct drm_display_mode *mode, int bpp)
4989 u32 pitch = intel_framebuffer_pitch_for_width(mode->hdisplay, bpp);
4990 return ALIGN(pitch * mode->vdisplay, PAGE_SIZE);
4993 static struct drm_framebuffer *
4994 intel_framebuffer_create_for_mode(struct drm_device *dev,
4995 struct drm_display_mode *mode,
4998 struct drm_i915_gem_object *obj;
4999 struct drm_mode_fb_cmd2 mode_cmd;
5001 obj = i915_gem_alloc_object(dev,
5002 intel_framebuffer_size_for_mode(mode, bpp));
5004 return ERR_PTR(-ENOMEM);
5006 mode_cmd.width = mode->hdisplay;
5007 mode_cmd.height = mode->vdisplay;
5008 mode_cmd.pitches[0] = intel_framebuffer_pitch_for_width(mode_cmd.width,
5010 mode_cmd.pixel_format = drm_mode_legacy_fb_format(bpp, depth);
5012 return intel_framebuffer_create(dev, &mode_cmd, obj);
5015 static struct drm_framebuffer *
5016 mode_fits_in_fbdev(struct drm_device *dev,
5017 struct drm_display_mode *mode)
5019 struct drm_i915_private *dev_priv = dev->dev_private;
5020 struct drm_i915_gem_object *obj;
5021 struct drm_framebuffer *fb;
5023 if (dev_priv->fbdev == NULL)
5026 obj = dev_priv->fbdev->ifb.obj;
5030 fb = &dev_priv->fbdev->ifb.base;
5031 if (fb->pitches[0] < intel_framebuffer_pitch_for_width(mode->hdisplay,
5032 fb->bits_per_pixel))
5035 if (obj->base.size < mode->vdisplay * fb->pitches[0])
5041 bool intel_get_load_detect_pipe(struct intel_encoder *intel_encoder,
5042 struct drm_connector *connector,
5043 struct drm_display_mode *mode,
5044 struct intel_load_detect_pipe *old)
5046 struct intel_crtc *intel_crtc;
5047 struct drm_crtc *possible_crtc;
5048 struct drm_encoder *encoder = &intel_encoder->base;
5049 struct drm_crtc *crtc = NULL;
5050 struct drm_device *dev = encoder->dev;
5051 struct drm_framebuffer *old_fb;
5054 DRM_DEBUG_KMS("[CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
5055 connector->base.id, drm_get_connector_name(connector),
5056 encoder->base.id, drm_get_encoder_name(encoder));
5059 * Algorithm gets a little messy:
5061 * - if the connector already has an assigned crtc, use it (but make
5062 * sure it's on first)
5064 * - try to find the first unused crtc that can drive this connector,
5065 * and use that if we find one
5068 /* See if we already have a CRTC for this connector */
5069 if (encoder->crtc) {
5070 crtc = encoder->crtc;
5072 intel_crtc = to_intel_crtc(crtc);
5073 old->dpms_mode = intel_crtc->dpms_mode;
5074 old->load_detect_temp = false;
5076 /* Make sure the crtc and connector are running */
5077 if (intel_crtc->dpms_mode != DRM_MODE_DPMS_ON) {
5078 struct drm_encoder_helper_funcs *encoder_funcs;
5079 struct drm_crtc_helper_funcs *crtc_funcs;
5081 crtc_funcs = crtc->helper_private;
5082 crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON);
5084 encoder_funcs = encoder->helper_private;
5085 encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON);
5091 /* Find an unused one (if possible) */
5092 list_for_each_entry(possible_crtc, &dev->mode_config.crtc_list, head) {
5094 if (!(encoder->possible_crtcs & (1 << i)))
5096 if (!possible_crtc->enabled) {
5097 crtc = possible_crtc;
5103 * If we didn't find an unused CRTC, don't use any.
5106 DRM_DEBUG_KMS("no pipe available for load-detect\n");
5110 encoder->crtc = crtc;
5111 connector->encoder = encoder;
5113 intel_crtc = to_intel_crtc(crtc);
5114 old->dpms_mode = intel_crtc->dpms_mode;
5115 old->load_detect_temp = true;
5116 old->release_fb = NULL;
5119 mode = &load_detect_mode;
5123 /* We need a framebuffer large enough to accommodate all accesses
5124 * that the plane may generate whilst we perform load detection.
5125 * We can not rely on the fbcon either being present (we get called
5126 * during its initialisation to detect all boot displays, or it may
5127 * not even exist) or that it is large enough to satisfy the
5130 crtc->fb = mode_fits_in_fbdev(dev, mode);
5131 if (crtc->fb == NULL) {
5132 DRM_DEBUG_KMS("creating tmp fb for load-detection\n");
5133 crtc->fb = intel_framebuffer_create_for_mode(dev, mode, 24, 32);
5134 old->release_fb = crtc->fb;
5136 DRM_DEBUG_KMS("reusing fbdev for load-detection framebuffer\n");
5137 if (IS_ERR(crtc->fb)) {
5138 DRM_DEBUG_KMS("failed to allocate framebuffer for load-detection\n");
5143 if (!drm_crtc_helper_set_mode(crtc, mode, 0, 0, old_fb)) {
5144 DRM_DEBUG_KMS("failed to set mode on load-detect pipe\n");
5145 if (old->release_fb)
5146 old->release_fb->funcs->destroy(old->release_fb);
5151 /* let the connector get through one full cycle before testing */
5152 intel_wait_for_vblank(dev, intel_crtc->pipe);
5157 void intel_release_load_detect_pipe(struct intel_encoder *intel_encoder,
5158 struct drm_connector *connector,
5159 struct intel_load_detect_pipe *old)
5161 struct drm_encoder *encoder = &intel_encoder->base;
5162 struct drm_device *dev = encoder->dev;
5163 struct drm_crtc *crtc = encoder->crtc;
5164 struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
5165 struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
5167 DRM_DEBUG_KMS("[CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
5168 connector->base.id, drm_get_connector_name(connector),
5169 encoder->base.id, drm_get_encoder_name(encoder));
5171 if (old->load_detect_temp) {
5172 connector->encoder = NULL;
5173 drm_helper_disable_unused_functions(dev);
5175 if (old->release_fb)
5176 old->release_fb->funcs->destroy(old->release_fb);
5181 /* Switch crtc and encoder back off if necessary */
5182 if (old->dpms_mode != DRM_MODE_DPMS_ON) {
5183 encoder_funcs->dpms(encoder, old->dpms_mode);
5184 crtc_funcs->dpms(crtc, old->dpms_mode);
5188 /* Returns the clock of the currently programmed mode of the given pipe. */
5189 static int intel_crtc_clock_get(struct drm_device *dev, struct drm_crtc *crtc)
5191 struct drm_i915_private *dev_priv = dev->dev_private;
5192 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5193 int pipe = intel_crtc->pipe;
5194 u32 dpll = I915_READ(DPLL(pipe));
5196 intel_clock_t clock;
5198 if ((dpll & DISPLAY_RATE_SELECT_FPA1) == 0)
5199 fp = I915_READ(FP0(pipe));
5201 fp = I915_READ(FP1(pipe));
5203 clock.m1 = (fp & FP_M1_DIV_MASK) >> FP_M1_DIV_SHIFT;
5204 if (IS_PINEVIEW(dev)) {
5205 clock.n = ffs((fp & FP_N_PINEVIEW_DIV_MASK) >> FP_N_DIV_SHIFT) - 1;
5206 clock.m2 = (fp & FP_M2_PINEVIEW_DIV_MASK) >> FP_M2_DIV_SHIFT;
5208 clock.n = (fp & FP_N_DIV_MASK) >> FP_N_DIV_SHIFT;
5209 clock.m2 = (fp & FP_M2_DIV_MASK) >> FP_M2_DIV_SHIFT;
5212 if (!IS_GEN2(dev)) {
5213 if (IS_PINEVIEW(dev))
5214 clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_PINEVIEW) >>
5215 DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW);
5217 clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK) >>
5218 DPLL_FPA01_P1_POST_DIV_SHIFT);
5220 switch (dpll & DPLL_MODE_MASK) {
5221 case DPLLB_MODE_DAC_SERIAL:
5222 clock.p2 = dpll & DPLL_DAC_SERIAL_P2_CLOCK_DIV_5 ?
5225 case DPLLB_MODE_LVDS:
5226 clock.p2 = dpll & DPLLB_LVDS_P2_CLOCK_DIV_7 ?
5230 DRM_DEBUG_KMS("Unknown DPLL mode %08x in programmed "
5231 "mode\n", (int)(dpll & DPLL_MODE_MASK));
5235 /* XXX: Handle the 100Mhz refclk */
5236 intel_clock(dev, 96000, &clock);
5238 bool is_lvds = (pipe == 1) && (I915_READ(LVDS) & LVDS_PORT_EN);
5241 clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830_LVDS) >>
5242 DPLL_FPA01_P1_POST_DIV_SHIFT);
5245 if ((dpll & PLL_REF_INPUT_MASK) ==
5246 PLLB_REF_INPUT_SPREADSPECTRUMIN) {
5247 /* XXX: might not be 66MHz */
5248 intel_clock(dev, 66000, &clock);
5250 intel_clock(dev, 48000, &clock);
5252 if (dpll & PLL_P1_DIVIDE_BY_TWO)
5255 clock.p1 = ((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830) >>
5256 DPLL_FPA01_P1_POST_DIV_SHIFT) + 2;
5258 if (dpll & PLL_P2_DIVIDE_BY_4)
5263 intel_clock(dev, 48000, &clock);
5267 /* XXX: It would be nice to validate the clocks, but we can't reuse
5268 * i830PllIsValid() because it relies on the xf86_config connector
5269 * configuration being accurate, which it isn't necessarily.
5275 /** Returns the currently programmed mode of the given pipe. */
5276 struct drm_display_mode *intel_crtc_mode_get(struct drm_device *dev,
5277 struct drm_crtc *crtc)
5279 struct drm_i915_private *dev_priv = dev->dev_private;
5280 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5281 int pipe = intel_crtc->pipe;
5282 struct drm_display_mode *mode;
5283 int htot = I915_READ(HTOTAL(pipe));
5284 int hsync = I915_READ(HSYNC(pipe));
5285 int vtot = I915_READ(VTOTAL(pipe));
5286 int vsync = I915_READ(VSYNC(pipe));
5288 mode = kzalloc(sizeof(*mode), GFP_KERNEL);
5292 mode->clock = intel_crtc_clock_get(dev, crtc);
5293 mode->hdisplay = (htot & 0xffff) + 1;
5294 mode->htotal = ((htot & 0xffff0000) >> 16) + 1;
5295 mode->hsync_start = (hsync & 0xffff) + 1;
5296 mode->hsync_end = ((hsync & 0xffff0000) >> 16) + 1;
5297 mode->vdisplay = (vtot & 0xffff) + 1;
5298 mode->vtotal = ((vtot & 0xffff0000) >> 16) + 1;
5299 mode->vsync_start = (vsync & 0xffff) + 1;
5300 mode->vsync_end = ((vsync & 0xffff0000) >> 16) + 1;
5302 drm_mode_set_name(mode);
5303 drm_mode_set_crtcinfo(mode, 0);
5308 #define GPU_IDLE_TIMEOUT 500 /* ms */
5310 /* When this timer fires, we've been idle for awhile */
5311 static void intel_gpu_idle_timer(unsigned long arg)
5313 struct drm_device *dev = (struct drm_device *)arg;
5314 drm_i915_private_t *dev_priv = dev->dev_private;
5316 if (!list_empty(&dev_priv->mm.active_list)) {
5317 /* Still processing requests, so just re-arm the timer. */
5318 mod_timer(&dev_priv->idle_timer, jiffies +
5319 msecs_to_jiffies(GPU_IDLE_TIMEOUT));
5323 dev_priv->busy = false;
5324 queue_work(dev_priv->wq, &dev_priv->idle_work);
5327 #define CRTC_IDLE_TIMEOUT 1000 /* ms */
5329 static void intel_crtc_idle_timer(unsigned long arg)
5331 struct intel_crtc *intel_crtc = (struct intel_crtc *)arg;
5332 struct drm_crtc *crtc = &intel_crtc->base;
5333 drm_i915_private_t *dev_priv = crtc->dev->dev_private;
5334 struct intel_framebuffer *intel_fb;
5336 intel_fb = to_intel_framebuffer(crtc->fb);
5337 if (intel_fb && intel_fb->obj->active) {
5338 /* The framebuffer is still being accessed by the GPU. */
5339 mod_timer(&intel_crtc->idle_timer, jiffies +
5340 msecs_to_jiffies(CRTC_IDLE_TIMEOUT));
5344 intel_crtc->busy = false;
5345 queue_work(dev_priv->wq, &dev_priv->idle_work);
5348 static void intel_increase_pllclock(struct drm_crtc *crtc)
5350 struct drm_device *dev = crtc->dev;
5351 drm_i915_private_t *dev_priv = dev->dev_private;
5352 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5353 int pipe = intel_crtc->pipe;
5354 int dpll_reg = DPLL(pipe);
5357 if (HAS_PCH_SPLIT(dev))
5360 if (!dev_priv->lvds_downclock_avail)
5363 dpll = I915_READ(dpll_reg);
5364 if (!HAS_PIPE_CXSR(dev) && (dpll & DISPLAY_RATE_SELECT_FPA1)) {
5365 DRM_DEBUG_DRIVER("upclocking LVDS\n");
5367 assert_panel_unlocked(dev_priv, pipe);
5369 dpll &= ~DISPLAY_RATE_SELECT_FPA1;
5370 I915_WRITE(dpll_reg, dpll);
5371 intel_wait_for_vblank(dev, pipe);
5373 dpll = I915_READ(dpll_reg);
5374 if (dpll & DISPLAY_RATE_SELECT_FPA1)
5375 DRM_DEBUG_DRIVER("failed to upclock LVDS!\n");
5378 /* Schedule downclock */
5379 mod_timer(&intel_crtc->idle_timer, jiffies +
5380 msecs_to_jiffies(CRTC_IDLE_TIMEOUT));
5383 static void intel_decrease_pllclock(struct drm_crtc *crtc)
5385 struct drm_device *dev = crtc->dev;
5386 drm_i915_private_t *dev_priv = dev->dev_private;
5387 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5388 int pipe = intel_crtc->pipe;
5389 int dpll_reg = DPLL(pipe);
5390 int dpll = I915_READ(dpll_reg);
5392 if (HAS_PCH_SPLIT(dev))
5395 if (!dev_priv->lvds_downclock_avail)
5399 * Since this is called by a timer, we should never get here in
5402 if (!HAS_PIPE_CXSR(dev) && intel_crtc->lowfreq_avail) {
5403 DRM_DEBUG_DRIVER("downclocking LVDS\n");
5405 assert_panel_unlocked(dev_priv, pipe);
5407 dpll |= DISPLAY_RATE_SELECT_FPA1;
5408 I915_WRITE(dpll_reg, dpll);
5409 intel_wait_for_vblank(dev, pipe);
5410 dpll = I915_READ(dpll_reg);
5411 if (!(dpll & DISPLAY_RATE_SELECT_FPA1))
5412 DRM_DEBUG_DRIVER("failed to downclock LVDS!\n");
5418 * intel_idle_update - adjust clocks for idleness
5419 * @work: work struct
5421 * Either the GPU or display (or both) went idle. Check the busy status
5422 * here and adjust the CRTC and GPU clocks as necessary.
5424 static void intel_idle_update(struct work_struct *work)
5426 drm_i915_private_t *dev_priv = container_of(work, drm_i915_private_t,
5428 struct drm_device *dev = dev_priv->dev;
5429 struct drm_crtc *crtc;
5430 struct intel_crtc *intel_crtc;
5432 if (!i915_powersave)
5435 mutex_lock(&dev->struct_mutex);
5437 i915_update_gfx_val(dev_priv);
5439 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
5440 /* Skip inactive CRTCs */
5444 intel_crtc = to_intel_crtc(crtc);
5445 if (!intel_crtc->busy)
5446 intel_decrease_pllclock(crtc);
5450 mutex_unlock(&dev->struct_mutex);
5454 * intel_mark_busy - mark the GPU and possibly the display busy
5456 * @obj: object we're operating on
5458 * Callers can use this function to indicate that the GPU is busy processing
5459 * commands. If @obj matches one of the CRTC objects (i.e. it's a scanout
5460 * buffer), we'll also mark the display as busy, so we know to increase its
5463 void intel_mark_busy(struct drm_device *dev, struct drm_i915_gem_object *obj)
5465 drm_i915_private_t *dev_priv = dev->dev_private;
5466 struct drm_crtc *crtc = NULL;
5467 struct intel_framebuffer *intel_fb;
5468 struct intel_crtc *intel_crtc;
5470 if (!drm_core_check_feature(dev, DRIVER_MODESET))
5473 if (!dev_priv->busy)
5474 dev_priv->busy = true;
5476 mod_timer(&dev_priv->idle_timer, jiffies +
5477 msecs_to_jiffies(GPU_IDLE_TIMEOUT));
5479 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
5483 intel_crtc = to_intel_crtc(crtc);
5484 intel_fb = to_intel_framebuffer(crtc->fb);
5485 if (intel_fb->obj == obj) {
5486 if (!intel_crtc->busy) {
5487 /* Non-busy -> busy, upclock */
5488 intel_increase_pllclock(crtc);
5489 intel_crtc->busy = true;
5491 /* Busy -> busy, put off timer */
5492 mod_timer(&intel_crtc->idle_timer, jiffies +
5493 msecs_to_jiffies(CRTC_IDLE_TIMEOUT));
5499 static void intel_crtc_destroy(struct drm_crtc *crtc)
5501 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5502 struct drm_device *dev = crtc->dev;
5503 struct intel_unpin_work *work;
5504 unsigned long flags;
5506 spin_lock_irqsave(&dev->event_lock, flags);
5507 work = intel_crtc->unpin_work;
5508 intel_crtc->unpin_work = NULL;
5509 spin_unlock_irqrestore(&dev->event_lock, flags);
5512 cancel_work_sync(&work->work);
5516 drm_crtc_cleanup(crtc);
5521 static void intel_unpin_work_fn(struct work_struct *__work)
5523 struct intel_unpin_work *work =
5524 container_of(__work, struct intel_unpin_work, work);
5526 mutex_lock(&work->dev->struct_mutex);
5527 intel_unpin_fb_obj(work->old_fb_obj);
5528 drm_gem_object_unreference(&work->pending_flip_obj->base);
5529 drm_gem_object_unreference(&work->old_fb_obj->base);
5531 intel_update_fbc(work->dev);
5532 mutex_unlock(&work->dev->struct_mutex);
5536 static void do_intel_finish_page_flip(struct drm_device *dev,
5537 struct drm_crtc *crtc)
5539 drm_i915_private_t *dev_priv = dev->dev_private;
5540 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5541 struct intel_unpin_work *work;
5542 struct drm_i915_gem_object *obj;
5543 struct drm_pending_vblank_event *e;
5544 struct timeval tnow, tvbl;
5545 unsigned long flags;
5547 /* Ignore early vblank irqs */
5548 if (intel_crtc == NULL)
5551 do_gettimeofday(&tnow);
5553 spin_lock_irqsave(&dev->event_lock, flags);
5554 work = intel_crtc->unpin_work;
5555 if (work == NULL || !work->pending) {
5556 spin_unlock_irqrestore(&dev->event_lock, flags);
5560 intel_crtc->unpin_work = NULL;
5564 e->event.sequence = drm_vblank_count_and_time(dev, intel_crtc->pipe, &tvbl);
5566 /* Called before vblank count and timestamps have
5567 * been updated for the vblank interval of flip
5568 * completion? Need to increment vblank count and
5569 * add one videorefresh duration to returned timestamp
5570 * to account for this. We assume this happened if we
5571 * get called over 0.9 frame durations after the last
5572 * timestamped vblank.
5574 * This calculation can not be used with vrefresh rates
5575 * below 5Hz (10Hz to be on the safe side) without
5576 * promoting to 64 integers.
5578 if (10 * (timeval_to_ns(&tnow) - timeval_to_ns(&tvbl)) >
5579 9 * crtc->framedur_ns) {
5580 e->event.sequence++;
5581 tvbl = ns_to_timeval(timeval_to_ns(&tvbl) +
5585 e->event.tv_sec = tvbl.tv_sec;
5586 e->event.tv_usec = tvbl.tv_usec;
5588 list_add_tail(&e->base.link,
5589 &e->base.file_priv->event_list);
5590 wake_up_interruptible(&e->base.file_priv->event_wait);
5593 drm_vblank_put(dev, intel_crtc->pipe);
5595 spin_unlock_irqrestore(&dev->event_lock, flags);
5597 obj = work->old_fb_obj;
5599 atomic_clear_mask(1 << intel_crtc->plane,
5600 &obj->pending_flip.counter);
5601 if (atomic_read(&obj->pending_flip) == 0)
5602 wake_up(&dev_priv->pending_flip_queue);
5604 schedule_work(&work->work);
5606 trace_i915_flip_complete(intel_crtc->plane, work->pending_flip_obj);
5609 void intel_finish_page_flip(struct drm_device *dev, int pipe)
5611 drm_i915_private_t *dev_priv = dev->dev_private;
5612 struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
5614 do_intel_finish_page_flip(dev, crtc);
5617 void intel_finish_page_flip_plane(struct drm_device *dev, int plane)
5619 drm_i915_private_t *dev_priv = dev->dev_private;
5620 struct drm_crtc *crtc = dev_priv->plane_to_crtc_mapping[plane];
5622 do_intel_finish_page_flip(dev, crtc);
5625 void intel_prepare_page_flip(struct drm_device *dev, int plane)
5627 drm_i915_private_t *dev_priv = dev->dev_private;
5628 struct intel_crtc *intel_crtc =
5629 to_intel_crtc(dev_priv->plane_to_crtc_mapping[plane]);
5630 unsigned long flags;
5632 spin_lock_irqsave(&dev->event_lock, flags);
5633 if (intel_crtc->unpin_work) {
5634 if ((++intel_crtc->unpin_work->pending) > 1)
5635 DRM_ERROR("Prepared flip multiple times\n");
5637 DRM_DEBUG_DRIVER("preparing flip with no unpin work?\n");
5639 spin_unlock_irqrestore(&dev->event_lock, flags);
5642 static int intel_gen2_queue_flip(struct drm_device *dev,
5643 struct drm_crtc *crtc,
5644 struct drm_framebuffer *fb,
5645 struct drm_i915_gem_object *obj)
5647 struct drm_i915_private *dev_priv = dev->dev_private;
5648 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5649 unsigned long offset;
5653 ret = intel_pin_and_fence_fb_obj(dev, obj, LP_RING(dev_priv));
5657 /* Offset into the new buffer for cases of shared fbs between CRTCs */
5658 offset = crtc->y * fb->pitches[0] + crtc->x * fb->bits_per_pixel/8;
5660 ret = BEGIN_LP_RING(6);
5664 /* Can't queue multiple flips, so wait for the previous
5665 * one to finish before executing the next.
5667 if (intel_crtc->plane)
5668 flip_mask = MI_WAIT_FOR_PLANE_B_FLIP;
5670 flip_mask = MI_WAIT_FOR_PLANE_A_FLIP;
5671 OUT_RING(MI_WAIT_FOR_EVENT | flip_mask);
5673 OUT_RING(MI_DISPLAY_FLIP |
5674 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
5675 OUT_RING(fb->pitches[0]);
5676 OUT_RING(obj->gtt_offset + offset);
5677 OUT_RING(0); /* aux display base address, unused */
5682 intel_unpin_fb_obj(obj);
5687 static int intel_gen3_queue_flip(struct drm_device *dev,
5688 struct drm_crtc *crtc,
5689 struct drm_framebuffer *fb,
5690 struct drm_i915_gem_object *obj)
5692 struct drm_i915_private *dev_priv = dev->dev_private;
5693 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5694 unsigned long offset;
5698 ret = intel_pin_and_fence_fb_obj(dev, obj, LP_RING(dev_priv));
5702 /* Offset into the new buffer for cases of shared fbs between CRTCs */
5703 offset = crtc->y * fb->pitches[0] + crtc->x * fb->bits_per_pixel/8;
5705 ret = BEGIN_LP_RING(6);
5709 if (intel_crtc->plane)
5710 flip_mask = MI_WAIT_FOR_PLANE_B_FLIP;
5712 flip_mask = MI_WAIT_FOR_PLANE_A_FLIP;
5713 OUT_RING(MI_WAIT_FOR_EVENT | flip_mask);
5715 OUT_RING(MI_DISPLAY_FLIP_I915 |
5716 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
5717 OUT_RING(fb->pitches[0]);
5718 OUT_RING(obj->gtt_offset + offset);
5725 intel_unpin_fb_obj(obj);
5730 static int intel_gen4_queue_flip(struct drm_device *dev,
5731 struct drm_crtc *crtc,
5732 struct drm_framebuffer *fb,
5733 struct drm_i915_gem_object *obj)
5735 struct drm_i915_private *dev_priv = dev->dev_private;
5736 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5737 uint32_t pf, pipesrc;
5740 ret = intel_pin_and_fence_fb_obj(dev, obj, LP_RING(dev_priv));
5744 ret = BEGIN_LP_RING(4);
5748 /* i965+ uses the linear or tiled offsets from the
5749 * Display Registers (which do not change across a page-flip)
5750 * so we need only reprogram the base address.
5752 OUT_RING(MI_DISPLAY_FLIP |
5753 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
5754 OUT_RING(fb->pitches[0]);
5755 OUT_RING(obj->gtt_offset | obj->tiling_mode);
5757 /* XXX Enabling the panel-fitter across page-flip is so far
5758 * untested on non-native modes, so ignore it for now.
5759 * pf = I915_READ(pipe == 0 ? PFA_CTL_1 : PFB_CTL_1) & PF_ENABLE;
5762 pipesrc = I915_READ(PIPESRC(intel_crtc->pipe)) & 0x0fff0fff;
5763 OUT_RING(pf | pipesrc);
5768 intel_unpin_fb_obj(obj);
5773 static int intel_gen6_queue_flip(struct drm_device *dev,
5774 struct drm_crtc *crtc,
5775 struct drm_framebuffer *fb,
5776 struct drm_i915_gem_object *obj)
5778 struct drm_i915_private *dev_priv = dev->dev_private;
5779 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5780 uint32_t pf, pipesrc;
5783 ret = intel_pin_and_fence_fb_obj(dev, obj, LP_RING(dev_priv));
5787 ret = BEGIN_LP_RING(4);
5791 OUT_RING(MI_DISPLAY_FLIP |
5792 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
5793 OUT_RING(fb->pitches[0] | obj->tiling_mode);
5794 OUT_RING(obj->gtt_offset);
5796 pf = I915_READ(PF_CTL(intel_crtc->pipe)) & PF_ENABLE;
5797 pipesrc = I915_READ(PIPESRC(intel_crtc->pipe)) & 0x0fff0fff;
5798 OUT_RING(pf | pipesrc);
5803 intel_unpin_fb_obj(obj);
5809 * On gen7 we currently use the blit ring because (in early silicon at least)
5810 * the render ring doesn't give us interrpts for page flip completion, which
5811 * means clients will hang after the first flip is queued. Fortunately the
5812 * blit ring generates interrupts properly, so use it instead.
5814 static int intel_gen7_queue_flip(struct drm_device *dev,
5815 struct drm_crtc *crtc,
5816 struct drm_framebuffer *fb,
5817 struct drm_i915_gem_object *obj)
5819 struct drm_i915_private *dev_priv = dev->dev_private;
5820 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5821 struct intel_ring_buffer *ring = &dev_priv->ring[BCS];
5824 ret = intel_pin_and_fence_fb_obj(dev, obj, ring);
5828 ret = intel_ring_begin(ring, 4);
5832 intel_ring_emit(ring, MI_DISPLAY_FLIP_I915 | (intel_crtc->plane << 19));
5833 intel_ring_emit(ring, (fb->pitches[0] | obj->tiling_mode));
5834 intel_ring_emit(ring, (obj->gtt_offset));
5835 intel_ring_emit(ring, (MI_NOOP));
5836 intel_ring_advance(ring);
5840 intel_unpin_fb_obj(obj);
5845 static int intel_default_queue_flip(struct drm_device *dev,
5846 struct drm_crtc *crtc,
5847 struct drm_framebuffer *fb,
5848 struct drm_i915_gem_object *obj)
5853 static int intel_crtc_page_flip(struct drm_crtc *crtc,
5854 struct drm_framebuffer *fb,
5855 struct drm_pending_vblank_event *event)
5857 struct drm_device *dev = crtc->dev;
5858 struct drm_i915_private *dev_priv = dev->dev_private;
5859 struct intel_framebuffer *intel_fb;
5860 struct drm_i915_gem_object *obj;
5861 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5862 struct intel_unpin_work *work;
5863 unsigned long flags;
5866 work = kzalloc(sizeof *work, GFP_KERNEL);
5870 work->event = event;
5871 work->dev = crtc->dev;
5872 intel_fb = to_intel_framebuffer(crtc->fb);
5873 work->old_fb_obj = intel_fb->obj;
5874 INIT_WORK(&work->work, intel_unpin_work_fn);
5876 ret = drm_vblank_get(dev, intel_crtc->pipe);
5880 /* We borrow the event spin lock for protecting unpin_work */
5881 spin_lock_irqsave(&dev->event_lock, flags);
5882 if (intel_crtc->unpin_work) {
5883 spin_unlock_irqrestore(&dev->event_lock, flags);
5885 drm_vblank_put(dev, intel_crtc->pipe);
5887 DRM_DEBUG_DRIVER("flip queue: crtc already busy\n");
5890 intel_crtc->unpin_work = work;
5891 spin_unlock_irqrestore(&dev->event_lock, flags);
5893 intel_fb = to_intel_framebuffer(fb);
5894 obj = intel_fb->obj;
5896 mutex_lock(&dev->struct_mutex);
5898 /* Reference the objects for the scheduled work. */
5899 drm_gem_object_reference(&work->old_fb_obj->base);
5900 drm_gem_object_reference(&obj->base);
5904 work->pending_flip_obj = obj;
5906 work->enable_stall_check = true;
5908 /* Block clients from rendering to the new back buffer until
5909 * the flip occurs and the object is no longer visible.
5911 atomic_add(1 << intel_crtc->plane, &work->old_fb_obj->pending_flip);
5913 ret = dev_priv->display.queue_flip(dev, crtc, fb, obj);
5915 goto cleanup_pending;
5917 intel_disable_fbc(dev);
5918 mutex_unlock(&dev->struct_mutex);
5920 trace_i915_flip_request(intel_crtc->plane, obj);
5925 atomic_sub(1 << intel_crtc->plane, &work->old_fb_obj->pending_flip);
5926 drm_gem_object_unreference(&work->old_fb_obj->base);
5927 drm_gem_object_unreference(&obj->base);
5928 mutex_unlock(&dev->struct_mutex);
5930 spin_lock_irqsave(&dev->event_lock, flags);
5931 intel_crtc->unpin_work = NULL;
5932 spin_unlock_irqrestore(&dev->event_lock, flags);
5934 drm_vblank_put(dev, intel_crtc->pipe);
5941 static void intel_sanitize_modesetting(struct drm_device *dev,
5942 int pipe, int plane)
5944 struct drm_i915_private *dev_priv = dev->dev_private;
5947 /* Clear any frame start delays used for debugging left by the BIOS */
5948 for_each_pipe(pipe) {
5949 reg = PIPECONF(pipe);
5950 I915_WRITE(reg, I915_READ(reg) & ~PIPECONF_FRAME_START_DELAY_MASK);
5953 if (HAS_PCH_SPLIT(dev))
5956 /* Who knows what state these registers were left in by the BIOS or
5959 * If we leave the registers in a conflicting state (e.g. with the
5960 * display plane reading from the other pipe than the one we intend
5961 * to use) then when we attempt to teardown the active mode, we will
5962 * not disable the pipes and planes in the correct order -- leaving
5963 * a plane reading from a disabled pipe and possibly leading to
5964 * undefined behaviour.
5967 reg = DSPCNTR(plane);
5968 val = I915_READ(reg);
5970 if ((val & DISPLAY_PLANE_ENABLE) == 0)
5972 if (!!(val & DISPPLANE_SEL_PIPE_MASK) == pipe)
5975 /* This display plane is active and attached to the other CPU pipe. */
5978 /* Disable the plane and wait for it to stop reading from the pipe. */
5979 intel_disable_plane(dev_priv, plane, pipe);
5980 intel_disable_pipe(dev_priv, pipe);
5983 static void intel_crtc_reset(struct drm_crtc *crtc)
5985 struct drm_device *dev = crtc->dev;
5986 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
5988 /* Reset flags back to the 'unknown' status so that they
5989 * will be correctly set on the initial modeset.
5991 intel_crtc->dpms_mode = -1;
5993 /* We need to fix up any BIOS configuration that conflicts with
5996 intel_sanitize_modesetting(dev, intel_crtc->pipe, intel_crtc->plane);
5999 static struct drm_crtc_helper_funcs intel_helper_funcs = {
6000 .dpms = intel_crtc_dpms,
6001 .mode_fixup = intel_crtc_mode_fixup,
6002 .mode_set = intel_crtc_mode_set,
6003 .mode_set_base = intel_pipe_set_base,
6004 .mode_set_base_atomic = intel_pipe_set_base_atomic,
6005 .load_lut = intel_crtc_load_lut,
6006 .disable = intel_crtc_disable,
6009 static const struct drm_crtc_funcs intel_crtc_funcs = {
6010 .reset = intel_crtc_reset,
6011 .cursor_set = intel_crtc_cursor_set,
6012 .cursor_move = intel_crtc_cursor_move,
6013 .gamma_set = intel_crtc_gamma_set,
6014 .set_config = drm_crtc_helper_set_config,
6015 .destroy = intel_crtc_destroy,
6016 .page_flip = intel_crtc_page_flip,
6019 static void intel_crtc_init(struct drm_device *dev, int pipe)
6021 drm_i915_private_t *dev_priv = dev->dev_private;
6022 struct intel_crtc *intel_crtc;
6025 intel_crtc = kzalloc(sizeof(struct intel_crtc) + (INTELFB_CONN_LIMIT * sizeof(struct drm_connector *)), GFP_KERNEL);
6026 if (intel_crtc == NULL)
6029 drm_crtc_init(dev, &intel_crtc->base, &intel_crtc_funcs);
6031 drm_mode_crtc_set_gamma_size(&intel_crtc->base, 256);
6032 for (i = 0; i < 256; i++) {
6033 intel_crtc->lut_r[i] = i;
6034 intel_crtc->lut_g[i] = i;
6035 intel_crtc->lut_b[i] = i;
6038 /* Swap pipes & planes for FBC on pre-965 */
6039 intel_crtc->pipe = pipe;
6040 intel_crtc->plane = pipe;
6041 if (IS_MOBILE(dev) && IS_GEN3(dev)) {
6042 DRM_DEBUG_KMS("swapping pipes & planes for FBC\n");
6043 intel_crtc->plane = !pipe;
6046 BUG_ON(pipe >= ARRAY_SIZE(dev_priv->plane_to_crtc_mapping) ||
6047 dev_priv->plane_to_crtc_mapping[intel_crtc->plane] != NULL);
6048 dev_priv->plane_to_crtc_mapping[intel_crtc->plane] = &intel_crtc->base;
6049 dev_priv->pipe_to_crtc_mapping[intel_crtc->pipe] = &intel_crtc->base;
6051 intel_crtc_reset(&intel_crtc->base);
6052 intel_crtc->active = true; /* force the pipe off on setup_init_config */
6053 intel_crtc->bpp = 24; /* default for pre-Ironlake */
6055 if (HAS_PCH_SPLIT(dev)) {
6056 if (pipe == 2 && IS_IVYBRIDGE(dev))
6057 intel_crtc->no_pll = true;
6058 intel_helper_funcs.prepare = ironlake_crtc_prepare;
6059 intel_helper_funcs.commit = ironlake_crtc_commit;
6061 intel_helper_funcs.prepare = i9xx_crtc_prepare;
6062 intel_helper_funcs.commit = i9xx_crtc_commit;
6065 drm_crtc_helper_add(&intel_crtc->base, &intel_helper_funcs);
6067 intel_crtc->busy = false;
6069 setup_timer(&intel_crtc->idle_timer, intel_crtc_idle_timer,
6070 (unsigned long)intel_crtc);
6073 int intel_get_pipe_from_crtc_id(struct drm_device *dev, void *data,
6074 struct drm_file *file)
6076 drm_i915_private_t *dev_priv = dev->dev_private;
6077 struct drm_i915_get_pipe_from_crtc_id *pipe_from_crtc_id = data;
6078 struct drm_mode_object *drmmode_obj;
6079 struct intel_crtc *crtc;
6082 DRM_ERROR("called with no initialization\n");
6086 drmmode_obj = drm_mode_object_find(dev, pipe_from_crtc_id->crtc_id,
6087 DRM_MODE_OBJECT_CRTC);
6090 DRM_ERROR("no such CRTC id\n");
6094 crtc = to_intel_crtc(obj_to_crtc(drmmode_obj));
6095 pipe_from_crtc_id->pipe = crtc->pipe;
6100 static int intel_encoder_clones(struct drm_device *dev, int type_mask)
6102 struct intel_encoder *encoder;
6106 list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.head) {
6107 if (type_mask & encoder->clone_mask)
6108 index_mask |= (1 << entry);
6115 static bool has_edp_a(struct drm_device *dev)
6117 struct drm_i915_private *dev_priv = dev->dev_private;
6119 if (!IS_MOBILE(dev))
6122 if ((I915_READ(DP_A) & DP_DETECTED) == 0)
6126 (I915_READ(ILK_DISPLAY_CHICKEN_FUSES) & ILK_eDP_A_DISABLE))
6132 static void intel_setup_outputs(struct drm_device *dev)
6134 struct drm_i915_private *dev_priv = dev->dev_private;
6135 struct intel_encoder *encoder;
6136 bool dpd_is_edp = false;
6139 has_lvds = intel_lvds_init(dev);
6140 if (!has_lvds && !HAS_PCH_SPLIT(dev)) {
6141 /* disable the panel fitter on everything but LVDS */
6142 I915_WRITE(PFIT_CONTROL, 0);
6145 if (HAS_PCH_SPLIT(dev)) {
6146 dpd_is_edp = intel_dpd_is_edp(dev);
6149 intel_dp_init(dev, DP_A);
6151 if (dpd_is_edp && (I915_READ(PCH_DP_D) & DP_DETECTED))
6152 intel_dp_init(dev, PCH_DP_D);
6155 intel_crt_init(dev);
6157 if (HAS_PCH_SPLIT(dev)) {
6160 if (I915_READ(HDMIB) & PORT_DETECTED) {
6161 /* PCH SDVOB multiplex with HDMIB */
6162 found = intel_sdvo_init(dev, PCH_SDVOB, true);
6164 intel_hdmi_init(dev, HDMIB);
6165 if (!found && (I915_READ(PCH_DP_B) & DP_DETECTED))
6166 intel_dp_init(dev, PCH_DP_B);
6169 if (I915_READ(HDMIC) & PORT_DETECTED)
6170 intel_hdmi_init(dev, HDMIC);
6172 if (I915_READ(HDMID) & PORT_DETECTED)
6173 intel_hdmi_init(dev, HDMID);
6175 if (I915_READ(PCH_DP_C) & DP_DETECTED)
6176 intel_dp_init(dev, PCH_DP_C);
6178 if (!dpd_is_edp && (I915_READ(PCH_DP_D) & DP_DETECTED))
6179 intel_dp_init(dev, PCH_DP_D);
6181 } else if (SUPPORTS_DIGITAL_OUTPUTS(dev)) {
6184 if (I915_READ(SDVOB) & SDVO_DETECTED) {
6185 DRM_DEBUG_KMS("probing SDVOB\n");
6186 found = intel_sdvo_init(dev, SDVOB, true);
6187 if (!found && SUPPORTS_INTEGRATED_HDMI(dev)) {
6188 DRM_DEBUG_KMS("probing HDMI on SDVOB\n");
6189 intel_hdmi_init(dev, SDVOB);
6192 if (!found && SUPPORTS_INTEGRATED_DP(dev)) {
6193 DRM_DEBUG_KMS("probing DP_B\n");
6194 intel_dp_init(dev, DP_B);
6198 /* Before G4X SDVOC doesn't have its own detect register */
6200 if (I915_READ(SDVOB) & SDVO_DETECTED) {
6201 DRM_DEBUG_KMS("probing SDVOC\n");
6202 found = intel_sdvo_init(dev, SDVOC, false);
6205 if (!found && (I915_READ(SDVOC) & SDVO_DETECTED)) {
6207 if (SUPPORTS_INTEGRATED_HDMI(dev)) {
6208 DRM_DEBUG_KMS("probing HDMI on SDVOC\n");
6209 intel_hdmi_init(dev, SDVOC);
6211 if (SUPPORTS_INTEGRATED_DP(dev)) {
6212 DRM_DEBUG_KMS("probing DP_C\n");
6213 intel_dp_init(dev, DP_C);
6217 if (SUPPORTS_INTEGRATED_DP(dev) &&
6218 (I915_READ(DP_D) & DP_DETECTED)) {
6219 DRM_DEBUG_KMS("probing DP_D\n");
6220 intel_dp_init(dev, DP_D);
6222 } else if (IS_GEN2(dev))
6223 intel_dvo_init(dev);
6225 if (SUPPORTS_TV(dev))
6228 list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.head) {
6229 encoder->base.possible_crtcs = encoder->crtc_mask;
6230 encoder->base.possible_clones =
6231 intel_encoder_clones(dev, encoder->clone_mask);
6234 /* disable all the possible outputs/crtcs before entering KMS mode */
6235 drm_helper_disable_unused_functions(dev);
6237 if (HAS_PCH_SPLIT(dev))
6238 ironlake_init_pch_refclk(dev);
6241 static void intel_user_framebuffer_destroy(struct drm_framebuffer *fb)
6243 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
6245 drm_framebuffer_cleanup(fb);
6246 drm_gem_object_unreference_unlocked(&intel_fb->obj->base);
6251 static int intel_user_framebuffer_create_handle(struct drm_framebuffer *fb,
6252 struct drm_file *file,
6253 unsigned int *handle)
6255 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
6256 struct drm_i915_gem_object *obj = intel_fb->obj;
6258 return drm_gem_handle_create(file, &obj->base, handle);
6261 static const struct drm_framebuffer_funcs intel_fb_funcs = {
6262 .destroy = intel_user_framebuffer_destroy,
6263 .create_handle = intel_user_framebuffer_create_handle,
6266 int intel_framebuffer_init(struct drm_device *dev,
6267 struct intel_framebuffer *intel_fb,
6268 struct drm_mode_fb_cmd2 *mode_cmd,
6269 struct drm_i915_gem_object *obj)
6273 if (obj->tiling_mode == I915_TILING_Y)
6276 if (mode_cmd->pitches[0] & 63)
6279 switch (mode_cmd->pixel_format) {
6280 case DRM_FORMAT_RGB332:
6281 case DRM_FORMAT_RGB565:
6282 case DRM_FORMAT_XRGB8888:
6283 case DRM_FORMAT_XBGR8888:
6284 case DRM_FORMAT_ARGB8888:
6285 case DRM_FORMAT_XRGB2101010:
6286 case DRM_FORMAT_ARGB2101010:
6287 /* RGB formats are common across chipsets */
6289 case DRM_FORMAT_YUYV:
6290 case DRM_FORMAT_UYVY:
6291 case DRM_FORMAT_YVYU:
6292 case DRM_FORMAT_VYUY:
6295 DRM_DEBUG_KMS("unsupported pixel format %u\n",
6296 mode_cmd->pixel_format);
6300 ret = drm_framebuffer_init(dev, &intel_fb->base, &intel_fb_funcs);
6302 DRM_ERROR("framebuffer init failed %d\n", ret);
6306 drm_helper_mode_fill_fb_struct(&intel_fb->base, mode_cmd);
6307 intel_fb->obj = obj;
6311 static struct drm_framebuffer *
6312 intel_user_framebuffer_create(struct drm_device *dev,
6313 struct drm_file *filp,
6314 struct drm_mode_fb_cmd2 *mode_cmd)
6316 struct drm_i915_gem_object *obj;
6318 obj = to_intel_bo(drm_gem_object_lookup(dev, filp,
6319 mode_cmd->handles[0]));
6320 if (&obj->base == NULL)
6321 return ERR_PTR(-ENOENT);
6323 return intel_framebuffer_create(dev, mode_cmd, obj);
6326 static const struct drm_mode_config_funcs intel_mode_funcs = {
6327 .fb_create = intel_user_framebuffer_create,
6328 .output_poll_changed = intel_fb_output_poll_changed,
6331 /* Set up chip specific display functions */
6332 static void intel_init_display(struct drm_device *dev)
6334 struct drm_i915_private *dev_priv = dev->dev_private;
6336 /* We always want a DPMS function */
6337 if (HAS_PCH_SPLIT(dev)) {
6338 dev_priv->display.dpms = ironlake_crtc_dpms;
6339 dev_priv->display.crtc_mode_set = ironlake_crtc_mode_set;
6340 dev_priv->display.update_plane = ironlake_update_plane;
6342 dev_priv->display.dpms = i9xx_crtc_dpms;
6343 dev_priv->display.crtc_mode_set = i9xx_crtc_mode_set;
6344 dev_priv->display.update_plane = i9xx_update_plane;
6347 /* Returns the core display clock speed */
6348 if (IS_VALLEYVIEW(dev))
6349 dev_priv->display.get_display_clock_speed =
6350 valleyview_get_display_clock_speed;
6351 else if (IS_I945G(dev) || (IS_G33(dev) && !IS_PINEVIEW_M(dev)))
6352 dev_priv->display.get_display_clock_speed =
6353 i945_get_display_clock_speed;
6354 else if (IS_I915G(dev))
6355 dev_priv->display.get_display_clock_speed =
6356 i915_get_display_clock_speed;
6357 else if (IS_I945GM(dev) || IS_845G(dev) || IS_PINEVIEW_M(dev))
6358 dev_priv->display.get_display_clock_speed =
6359 i9xx_misc_get_display_clock_speed;
6360 else if (IS_I915GM(dev))
6361 dev_priv->display.get_display_clock_speed =
6362 i915gm_get_display_clock_speed;
6363 else if (IS_I865G(dev))
6364 dev_priv->display.get_display_clock_speed =
6365 i865_get_display_clock_speed;
6366 else if (IS_I85X(dev))
6367 dev_priv->display.get_display_clock_speed =
6368 i855_get_display_clock_speed;
6370 dev_priv->display.get_display_clock_speed =
6371 i830_get_display_clock_speed;
6373 if (HAS_PCH_SPLIT(dev)) {
6375 dev_priv->display.fdi_link_train = ironlake_fdi_link_train;
6376 dev_priv->display.write_eld = ironlake_write_eld;
6377 } else if (IS_GEN6(dev)) {
6378 dev_priv->display.fdi_link_train = gen6_fdi_link_train;
6379 dev_priv->display.write_eld = ironlake_write_eld;
6380 } else if (IS_IVYBRIDGE(dev)) {
6381 /* FIXME: detect B0+ stepping and use auto training */
6382 dev_priv->display.fdi_link_train = ivb_manual_fdi_link_train;
6383 dev_priv->display.write_eld = ironlake_write_eld;
6385 dev_priv->display.update_wm = NULL;
6386 } else if (IS_VALLEYVIEW(dev)) {
6387 dev_priv->display.force_wake_get = vlv_force_wake_get;
6388 dev_priv->display.force_wake_put = vlv_force_wake_put;
6389 } else if (IS_G4X(dev)) {
6390 dev_priv->display.write_eld = g4x_write_eld;
6393 /* Default just returns -ENODEV to indicate unsupported */
6394 dev_priv->display.queue_flip = intel_default_queue_flip;
6396 switch (INTEL_INFO(dev)->gen) {
6398 dev_priv->display.queue_flip = intel_gen2_queue_flip;
6402 dev_priv->display.queue_flip = intel_gen3_queue_flip;
6407 dev_priv->display.queue_flip = intel_gen4_queue_flip;
6411 dev_priv->display.queue_flip = intel_gen6_queue_flip;
6414 dev_priv->display.queue_flip = intel_gen7_queue_flip;
6420 * Some BIOSes insist on assuming the GPU's pipe A is enabled at suspend,
6421 * resume, or other times. This quirk makes sure that's the case for
6424 static void quirk_pipea_force(struct drm_device *dev)
6426 struct drm_i915_private *dev_priv = dev->dev_private;
6428 dev_priv->quirks |= QUIRK_PIPEA_FORCE;
6429 DRM_INFO("applying pipe a force quirk\n");
6433 * Some machines (Lenovo U160) do not work with SSC on LVDS for some reason
6435 static void quirk_ssc_force_disable(struct drm_device *dev)
6437 struct drm_i915_private *dev_priv = dev->dev_private;
6438 dev_priv->quirks |= QUIRK_LVDS_SSC_DISABLE;
6439 DRM_INFO("applying lvds SSC disable quirk\n");
6443 * A machine (e.g. Acer Aspire 5734Z) may need to invert the panel backlight
6446 static void quirk_invert_brightness(struct drm_device *dev)
6448 struct drm_i915_private *dev_priv = dev->dev_private;
6449 dev_priv->quirks |= QUIRK_INVERT_BRIGHTNESS;
6450 DRM_INFO("applying inverted panel brightness quirk\n");
6453 struct intel_quirk {
6455 int subsystem_vendor;
6456 int subsystem_device;
6457 void (*hook)(struct drm_device *dev);
6460 static struct intel_quirk intel_quirks[] = {
6461 /* HP Mini needs pipe A force quirk (LP: #322104) */
6462 { 0x27ae, 0x103c, 0x361a, quirk_pipea_force },
6464 /* Thinkpad R31 needs pipe A force quirk */
6465 { 0x3577, 0x1014, 0x0505, quirk_pipea_force },
6466 /* Toshiba Protege R-205, S-209 needs pipe A force quirk */
6467 { 0x2592, 0x1179, 0x0001, quirk_pipea_force },
6469 /* ThinkPad X30 needs pipe A force quirk (LP: #304614) */
6470 { 0x3577, 0x1014, 0x0513, quirk_pipea_force },
6471 /* ThinkPad X40 needs pipe A force quirk */
6473 /* ThinkPad T60 needs pipe A force quirk (bug #16494) */
6474 { 0x2782, 0x17aa, 0x201a, quirk_pipea_force },
6476 /* 855 & before need to leave pipe A & dpll A up */
6477 { 0x3582, PCI_ANY_ID, PCI_ANY_ID, quirk_pipea_force },
6478 { 0x2562, PCI_ANY_ID, PCI_ANY_ID, quirk_pipea_force },
6480 /* Lenovo U160 cannot use SSC on LVDS */
6481 { 0x0046, 0x17aa, 0x3920, quirk_ssc_force_disable },
6483 /* Sony Vaio Y cannot use SSC on LVDS */
6484 { 0x0046, 0x104d, 0x9076, quirk_ssc_force_disable },
6486 /* Acer Aspire 5734Z must invert backlight brightness */
6487 { 0x2a42, 0x1025, 0x0459, quirk_invert_brightness },
6490 static void intel_init_quirks(struct drm_device *dev)
6492 struct pci_dev *d = dev->pdev;
6495 for (i = 0; i < ARRAY_SIZE(intel_quirks); i++) {
6496 struct intel_quirk *q = &intel_quirks[i];
6498 if (d->device == q->device &&
6499 (d->subsystem_vendor == q->subsystem_vendor ||
6500 q->subsystem_vendor == PCI_ANY_ID) &&
6501 (d->subsystem_device == q->subsystem_device ||
6502 q->subsystem_device == PCI_ANY_ID))
6507 /* Disable the VGA plane that we never use */
6508 static void i915_disable_vga(struct drm_device *dev)
6510 struct drm_i915_private *dev_priv = dev->dev_private;
6514 if (HAS_PCH_SPLIT(dev))
6515 vga_reg = CPU_VGACNTRL;
6519 vga_get_uninterruptible(dev->pdev, VGA_RSRC_LEGACY_IO);
6520 outb(SR01, VGA_SR_INDEX);
6521 sr1 = inb(VGA_SR_DATA);
6522 outb(sr1 | 1<<5, VGA_SR_DATA);
6523 vga_put(dev->pdev, VGA_RSRC_LEGACY_IO);
6526 I915_WRITE(vga_reg, VGA_DISP_DISABLE);
6527 POSTING_READ(vga_reg);
6530 static void ivb_pch_pwm_override(struct drm_device *dev)
6532 struct drm_i915_private *dev_priv = dev->dev_private;
6535 * IVB has CPU eDP backlight regs too, set things up to let the
6536 * PCH regs control the backlight
6538 I915_WRITE(BLC_PWM_CPU_CTL2, PWM_ENABLE);
6539 I915_WRITE(BLC_PWM_CPU_CTL, 0);
6540 I915_WRITE(BLC_PWM_PCH_CTL1, PWM_ENABLE | (1<<30));
6543 void intel_modeset_init_hw(struct drm_device *dev)
6545 struct drm_i915_private *dev_priv = dev->dev_private;
6547 intel_init_clock_gating(dev);
6549 if (IS_IRONLAKE_M(dev)) {
6550 ironlake_enable_drps(dev);
6551 intel_init_emon(dev);
6554 if ((IS_GEN6(dev) || IS_GEN7(dev)) && !IS_VALLEYVIEW(dev)) {
6555 gen6_enable_rps(dev_priv);
6556 gen6_update_ring_freq(dev_priv);
6559 if (IS_IVYBRIDGE(dev))
6560 ivb_pch_pwm_override(dev);
6563 void intel_modeset_init(struct drm_device *dev)
6565 struct drm_i915_private *dev_priv = dev->dev_private;
6568 drm_mode_config_init(dev);
6570 dev->mode_config.min_width = 0;
6571 dev->mode_config.min_height = 0;
6573 dev->mode_config.preferred_depth = 24;
6574 dev->mode_config.prefer_shadow = 1;
6576 dev->mode_config.funcs = (void *)&intel_mode_funcs;
6578 intel_init_quirks(dev);
6582 intel_init_display(dev);
6585 dev->mode_config.max_width = 2048;
6586 dev->mode_config.max_height = 2048;
6587 } else if (IS_GEN3(dev)) {
6588 dev->mode_config.max_width = 4096;
6589 dev->mode_config.max_height = 4096;
6591 dev->mode_config.max_width = 8192;
6592 dev->mode_config.max_height = 8192;
6594 dev->mode_config.fb_base = dev->agp->base;
6596 DRM_DEBUG_KMS("%d display pipe%s available.\n",
6597 dev_priv->num_pipe, dev_priv->num_pipe > 1 ? "s" : "");
6599 for (i = 0; i < dev_priv->num_pipe; i++) {
6600 intel_crtc_init(dev, i);
6601 ret = intel_plane_init(dev, i);
6603 DRM_DEBUG_KMS("plane %d init failed: %d\n", i, ret);
6606 /* Just disable it once at startup */
6607 i915_disable_vga(dev);
6608 intel_setup_outputs(dev);
6610 intel_modeset_init_hw(dev);
6612 INIT_WORK(&dev_priv->idle_work, intel_idle_update);
6613 setup_timer(&dev_priv->idle_timer, intel_gpu_idle_timer,
6614 (unsigned long)dev);
6617 void intel_modeset_gem_init(struct drm_device *dev)
6619 if (IS_IRONLAKE_M(dev))
6620 ironlake_enable_rc6(dev);
6622 intel_setup_overlay(dev);
6625 void intel_modeset_cleanup(struct drm_device *dev)
6627 struct drm_i915_private *dev_priv = dev->dev_private;
6628 struct drm_crtc *crtc;
6629 struct intel_crtc *intel_crtc;
6631 drm_kms_helper_poll_fini(dev);
6632 mutex_lock(&dev->struct_mutex);
6634 intel_unregister_dsm_handler();
6637 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
6638 /* Skip inactive CRTCs */
6642 intel_crtc = to_intel_crtc(crtc);
6643 intel_increase_pllclock(crtc);
6646 intel_disable_fbc(dev);
6648 if (IS_IRONLAKE_M(dev))
6649 ironlake_disable_drps(dev);
6650 if ((IS_GEN6(dev) || IS_GEN7(dev)) && !IS_VALLEYVIEW(dev))
6651 gen6_disable_rps(dev);
6653 if (IS_IRONLAKE_M(dev))
6654 ironlake_disable_rc6(dev);
6656 if (IS_VALLEYVIEW(dev))
6659 mutex_unlock(&dev->struct_mutex);
6661 /* Disable the irq before mode object teardown, for the irq might
6662 * enqueue unpin/hotplug work. */
6663 drm_irq_uninstall(dev);
6664 cancel_work_sync(&dev_priv->hotplug_work);
6665 cancel_work_sync(&dev_priv->rps_work);
6667 /* flush any delayed tasks or pending work */
6668 flush_scheduled_work();
6670 /* Shut off idle work before the crtcs get freed. */
6671 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
6672 intel_crtc = to_intel_crtc(crtc);
6673 del_timer_sync(&intel_crtc->idle_timer);
6675 del_timer_sync(&dev_priv->idle_timer);
6676 cancel_work_sync(&dev_priv->idle_work);
6678 drm_mode_config_cleanup(dev);
6682 * Return which encoder is currently attached for connector.
6684 struct drm_encoder *intel_best_encoder(struct drm_connector *connector)
6686 return &intel_attached_encoder(connector)->base;
6689 void intel_connector_attach_encoder(struct intel_connector *connector,
6690 struct intel_encoder *encoder)
6692 connector->encoder = encoder;
6693 drm_mode_connector_attach_encoder(&connector->base,
6698 * set vga decode state - true == enable VGA decode
6700 int intel_modeset_vga_set_state(struct drm_device *dev, bool state)
6702 struct drm_i915_private *dev_priv = dev->dev_private;
6705 pci_read_config_word(dev_priv->bridge_dev, INTEL_GMCH_CTRL, &gmch_ctrl);
6707 gmch_ctrl &= ~INTEL_GMCH_VGA_DISABLE;
6709 gmch_ctrl |= INTEL_GMCH_VGA_DISABLE;
6710 pci_write_config_word(dev_priv->bridge_dev, INTEL_GMCH_CTRL, gmch_ctrl);
6714 #ifdef CONFIG_DEBUG_FS
6715 #include <linux/seq_file.h>
6717 struct intel_display_error_state {
6718 struct intel_cursor_error_state {
6725 struct intel_pipe_error_state {
6737 struct intel_plane_error_state {
6748 struct intel_display_error_state *
6749 intel_display_capture_error_state(struct drm_device *dev)
6751 drm_i915_private_t *dev_priv = dev->dev_private;
6752 struct intel_display_error_state *error;
6755 error = kmalloc(sizeof(*error), GFP_ATOMIC);
6759 for (i = 0; i < 2; i++) {
6760 error->cursor[i].control = I915_READ(CURCNTR(i));
6761 error->cursor[i].position = I915_READ(CURPOS(i));
6762 error->cursor[i].base = I915_READ(CURBASE(i));
6764 error->plane[i].control = I915_READ(DSPCNTR(i));
6765 error->plane[i].stride = I915_READ(DSPSTRIDE(i));
6766 error->plane[i].size = I915_READ(DSPSIZE(i));
6767 error->plane[i].pos = I915_READ(DSPPOS(i));
6768 error->plane[i].addr = I915_READ(DSPADDR(i));
6769 if (INTEL_INFO(dev)->gen >= 4) {
6770 error->plane[i].surface = I915_READ(DSPSURF(i));
6771 error->plane[i].tile_offset = I915_READ(DSPTILEOFF(i));
6774 error->pipe[i].conf = I915_READ(PIPECONF(i));
6775 error->pipe[i].source = I915_READ(PIPESRC(i));
6776 error->pipe[i].htotal = I915_READ(HTOTAL(i));
6777 error->pipe[i].hblank = I915_READ(HBLANK(i));
6778 error->pipe[i].hsync = I915_READ(HSYNC(i));
6779 error->pipe[i].vtotal = I915_READ(VTOTAL(i));
6780 error->pipe[i].vblank = I915_READ(VBLANK(i));
6781 error->pipe[i].vsync = I915_READ(VSYNC(i));
6788 intel_display_print_error_state(struct seq_file *m,
6789 struct drm_device *dev,
6790 struct intel_display_error_state *error)
6794 for (i = 0; i < 2; i++) {
6795 seq_printf(m, "Pipe [%d]:\n", i);
6796 seq_printf(m, " CONF: %08x\n", error->pipe[i].conf);
6797 seq_printf(m, " SRC: %08x\n", error->pipe[i].source);
6798 seq_printf(m, " HTOTAL: %08x\n", error->pipe[i].htotal);
6799 seq_printf(m, " HBLANK: %08x\n", error->pipe[i].hblank);
6800 seq_printf(m, " HSYNC: %08x\n", error->pipe[i].hsync);
6801 seq_printf(m, " VTOTAL: %08x\n", error->pipe[i].vtotal);
6802 seq_printf(m, " VBLANK: %08x\n", error->pipe[i].vblank);
6803 seq_printf(m, " VSYNC: %08x\n", error->pipe[i].vsync);
6805 seq_printf(m, "Plane [%d]:\n", i);
6806 seq_printf(m, " CNTR: %08x\n", error->plane[i].control);
6807 seq_printf(m, " STRIDE: %08x\n", error->plane[i].stride);
6808 seq_printf(m, " SIZE: %08x\n", error->plane[i].size);
6809 seq_printf(m, " POS: %08x\n", error->plane[i].pos);
6810 seq_printf(m, " ADDR: %08x\n", error->plane[i].addr);
6811 if (INTEL_INFO(dev)->gen >= 4) {
6812 seq_printf(m, " SURF: %08x\n", error->plane[i].surface);
6813 seq_printf(m, " TILEOFF: %08x\n", error->plane[i].tile_offset);
6816 seq_printf(m, "Cursor [%d]:\n", i);
6817 seq_printf(m, " CNTR: %08x\n", error->cursor[i].control);
6818 seq_printf(m, " POS: %08x\n", error->cursor[i].position);
6819 seq_printf(m, " BASE: %08x\n", error->cursor[i].base);