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/module.h>
28 #include <linux/input.h>
29 #include <linux/i2c.h>
30 #include <linux/kernel.h>
32 #include "intel_drv.h"
35 #include "drm_dp_helper.h"
37 #include "drm_crtc_helper.h"
39 #define HAS_eDP (intel_pipe_has_type(crtc, INTEL_OUTPUT_EDP))
41 bool intel_pipe_has_type (struct drm_crtc *crtc, int type);
42 static void intel_update_watermarks(struct drm_device *dev);
43 static void intel_increase_pllclock(struct drm_crtc *crtc, bool schedule);
66 #define INTEL_P2_NUM 2
67 typedef struct intel_limit intel_limit_t;
69 intel_range_t dot, vco, n, m, m1, m2, p, p1;
71 bool (* find_pll)(const intel_limit_t *, struct drm_crtc *,
72 int, int, intel_clock_t *);
75 #define I8XX_DOT_MIN 25000
76 #define I8XX_DOT_MAX 350000
77 #define I8XX_VCO_MIN 930000
78 #define I8XX_VCO_MAX 1400000
82 #define I8XX_M_MAX 140
83 #define I8XX_M1_MIN 18
84 #define I8XX_M1_MAX 26
86 #define I8XX_M2_MAX 16
88 #define I8XX_P_MAX 128
90 #define I8XX_P1_MAX 33
91 #define I8XX_P1_LVDS_MIN 1
92 #define I8XX_P1_LVDS_MAX 6
93 #define I8XX_P2_SLOW 4
94 #define I8XX_P2_FAST 2
95 #define I8XX_P2_LVDS_SLOW 14
96 #define I8XX_P2_LVDS_FAST 7
97 #define I8XX_P2_SLOW_LIMIT 165000
99 #define I9XX_DOT_MIN 20000
100 #define I9XX_DOT_MAX 400000
101 #define I9XX_VCO_MIN 1400000
102 #define I9XX_VCO_MAX 2800000
103 #define PINEVIEW_VCO_MIN 1700000
104 #define PINEVIEW_VCO_MAX 3500000
107 /* Pineview's Ncounter is a ring counter */
108 #define PINEVIEW_N_MIN 3
109 #define PINEVIEW_N_MAX 6
110 #define I9XX_M_MIN 70
111 #define I9XX_M_MAX 120
112 #define PINEVIEW_M_MIN 2
113 #define PINEVIEW_M_MAX 256
114 #define I9XX_M1_MIN 10
115 #define I9XX_M1_MAX 22
116 #define I9XX_M2_MIN 5
117 #define I9XX_M2_MAX 9
118 /* Pineview M1 is reserved, and must be 0 */
119 #define PINEVIEW_M1_MIN 0
120 #define PINEVIEW_M1_MAX 0
121 #define PINEVIEW_M2_MIN 0
122 #define PINEVIEW_M2_MAX 254
123 #define I9XX_P_SDVO_DAC_MIN 5
124 #define I9XX_P_SDVO_DAC_MAX 80
125 #define I9XX_P_LVDS_MIN 7
126 #define I9XX_P_LVDS_MAX 98
127 #define PINEVIEW_P_LVDS_MIN 7
128 #define PINEVIEW_P_LVDS_MAX 112
129 #define I9XX_P1_MIN 1
130 #define I9XX_P1_MAX 8
131 #define I9XX_P2_SDVO_DAC_SLOW 10
132 #define I9XX_P2_SDVO_DAC_FAST 5
133 #define I9XX_P2_SDVO_DAC_SLOW_LIMIT 200000
134 #define I9XX_P2_LVDS_SLOW 14
135 #define I9XX_P2_LVDS_FAST 7
136 #define I9XX_P2_LVDS_SLOW_LIMIT 112000
138 /*The parameter is for SDVO on G4x platform*/
139 #define G4X_DOT_SDVO_MIN 25000
140 #define G4X_DOT_SDVO_MAX 270000
141 #define G4X_VCO_MIN 1750000
142 #define G4X_VCO_MAX 3500000
143 #define G4X_N_SDVO_MIN 1
144 #define G4X_N_SDVO_MAX 4
145 #define G4X_M_SDVO_MIN 104
146 #define G4X_M_SDVO_MAX 138
147 #define G4X_M1_SDVO_MIN 17
148 #define G4X_M1_SDVO_MAX 23
149 #define G4X_M2_SDVO_MIN 5
150 #define G4X_M2_SDVO_MAX 11
151 #define G4X_P_SDVO_MIN 10
152 #define G4X_P_SDVO_MAX 30
153 #define G4X_P1_SDVO_MIN 1
154 #define G4X_P1_SDVO_MAX 3
155 #define G4X_P2_SDVO_SLOW 10
156 #define G4X_P2_SDVO_FAST 10
157 #define G4X_P2_SDVO_LIMIT 270000
159 /*The parameter is for HDMI_DAC on G4x platform*/
160 #define G4X_DOT_HDMI_DAC_MIN 22000
161 #define G4X_DOT_HDMI_DAC_MAX 400000
162 #define G4X_N_HDMI_DAC_MIN 1
163 #define G4X_N_HDMI_DAC_MAX 4
164 #define G4X_M_HDMI_DAC_MIN 104
165 #define G4X_M_HDMI_DAC_MAX 138
166 #define G4X_M1_HDMI_DAC_MIN 16
167 #define G4X_M1_HDMI_DAC_MAX 23
168 #define G4X_M2_HDMI_DAC_MIN 5
169 #define G4X_M2_HDMI_DAC_MAX 11
170 #define G4X_P_HDMI_DAC_MIN 5
171 #define G4X_P_HDMI_DAC_MAX 80
172 #define G4X_P1_HDMI_DAC_MIN 1
173 #define G4X_P1_HDMI_DAC_MAX 8
174 #define G4X_P2_HDMI_DAC_SLOW 10
175 #define G4X_P2_HDMI_DAC_FAST 5
176 #define G4X_P2_HDMI_DAC_LIMIT 165000
178 /*The parameter is for SINGLE_CHANNEL_LVDS on G4x platform*/
179 #define G4X_DOT_SINGLE_CHANNEL_LVDS_MIN 20000
180 #define G4X_DOT_SINGLE_CHANNEL_LVDS_MAX 115000
181 #define G4X_N_SINGLE_CHANNEL_LVDS_MIN 1
182 #define G4X_N_SINGLE_CHANNEL_LVDS_MAX 3
183 #define G4X_M_SINGLE_CHANNEL_LVDS_MIN 104
184 #define G4X_M_SINGLE_CHANNEL_LVDS_MAX 138
185 #define G4X_M1_SINGLE_CHANNEL_LVDS_MIN 17
186 #define G4X_M1_SINGLE_CHANNEL_LVDS_MAX 23
187 #define G4X_M2_SINGLE_CHANNEL_LVDS_MIN 5
188 #define G4X_M2_SINGLE_CHANNEL_LVDS_MAX 11
189 #define G4X_P_SINGLE_CHANNEL_LVDS_MIN 28
190 #define G4X_P_SINGLE_CHANNEL_LVDS_MAX 112
191 #define G4X_P1_SINGLE_CHANNEL_LVDS_MIN 2
192 #define G4X_P1_SINGLE_CHANNEL_LVDS_MAX 8
193 #define G4X_P2_SINGLE_CHANNEL_LVDS_SLOW 14
194 #define G4X_P2_SINGLE_CHANNEL_LVDS_FAST 14
195 #define G4X_P2_SINGLE_CHANNEL_LVDS_LIMIT 0
197 /*The parameter is for DUAL_CHANNEL_LVDS on G4x platform*/
198 #define G4X_DOT_DUAL_CHANNEL_LVDS_MIN 80000
199 #define G4X_DOT_DUAL_CHANNEL_LVDS_MAX 224000
200 #define G4X_N_DUAL_CHANNEL_LVDS_MIN 1
201 #define G4X_N_DUAL_CHANNEL_LVDS_MAX 3
202 #define G4X_M_DUAL_CHANNEL_LVDS_MIN 104
203 #define G4X_M_DUAL_CHANNEL_LVDS_MAX 138
204 #define G4X_M1_DUAL_CHANNEL_LVDS_MIN 17
205 #define G4X_M1_DUAL_CHANNEL_LVDS_MAX 23
206 #define G4X_M2_DUAL_CHANNEL_LVDS_MIN 5
207 #define G4X_M2_DUAL_CHANNEL_LVDS_MAX 11
208 #define G4X_P_DUAL_CHANNEL_LVDS_MIN 14
209 #define G4X_P_DUAL_CHANNEL_LVDS_MAX 42
210 #define G4X_P1_DUAL_CHANNEL_LVDS_MIN 2
211 #define G4X_P1_DUAL_CHANNEL_LVDS_MAX 6
212 #define G4X_P2_DUAL_CHANNEL_LVDS_SLOW 7
213 #define G4X_P2_DUAL_CHANNEL_LVDS_FAST 7
214 #define G4X_P2_DUAL_CHANNEL_LVDS_LIMIT 0
216 /*The parameter is for DISPLAY PORT on G4x platform*/
217 #define G4X_DOT_DISPLAY_PORT_MIN 161670
218 #define G4X_DOT_DISPLAY_PORT_MAX 227000
219 #define G4X_N_DISPLAY_PORT_MIN 1
220 #define G4X_N_DISPLAY_PORT_MAX 2
221 #define G4X_M_DISPLAY_PORT_MIN 97
222 #define G4X_M_DISPLAY_PORT_MAX 108
223 #define G4X_M1_DISPLAY_PORT_MIN 0x10
224 #define G4X_M1_DISPLAY_PORT_MAX 0x12
225 #define G4X_M2_DISPLAY_PORT_MIN 0x05
226 #define G4X_M2_DISPLAY_PORT_MAX 0x06
227 #define G4X_P_DISPLAY_PORT_MIN 10
228 #define G4X_P_DISPLAY_PORT_MAX 20
229 #define G4X_P1_DISPLAY_PORT_MIN 1
230 #define G4X_P1_DISPLAY_PORT_MAX 2
231 #define G4X_P2_DISPLAY_PORT_SLOW 10
232 #define G4X_P2_DISPLAY_PORT_FAST 10
233 #define G4X_P2_DISPLAY_PORT_LIMIT 0
235 /* Ironlake / Sandybridge */
236 /* as we calculate clock using (register_value + 2) for
237 N/M1/M2, so here the range value for them is (actual_value-2).
239 #define IRONLAKE_DOT_MIN 25000
240 #define IRONLAKE_DOT_MAX 350000
241 #define IRONLAKE_VCO_MIN 1760000
242 #define IRONLAKE_VCO_MAX 3510000
243 #define IRONLAKE_M1_MIN 12
244 #define IRONLAKE_M1_MAX 22
245 #define IRONLAKE_M2_MIN 5
246 #define IRONLAKE_M2_MAX 9
247 #define IRONLAKE_P2_DOT_LIMIT 225000 /* 225Mhz */
249 /* We have parameter ranges for different type of outputs. */
251 /* DAC & HDMI Refclk 120Mhz */
252 #define IRONLAKE_DAC_N_MIN 1
253 #define IRONLAKE_DAC_N_MAX 5
254 #define IRONLAKE_DAC_M_MIN 79
255 #define IRONLAKE_DAC_M_MAX 127
256 #define IRONLAKE_DAC_P_MIN 5
257 #define IRONLAKE_DAC_P_MAX 80
258 #define IRONLAKE_DAC_P1_MIN 1
259 #define IRONLAKE_DAC_P1_MAX 8
260 #define IRONLAKE_DAC_P2_SLOW 10
261 #define IRONLAKE_DAC_P2_FAST 5
263 /* LVDS single-channel 120Mhz refclk */
264 #define IRONLAKE_LVDS_S_N_MIN 1
265 #define IRONLAKE_LVDS_S_N_MAX 3
266 #define IRONLAKE_LVDS_S_M_MIN 79
267 #define IRONLAKE_LVDS_S_M_MAX 118
268 #define IRONLAKE_LVDS_S_P_MIN 28
269 #define IRONLAKE_LVDS_S_P_MAX 112
270 #define IRONLAKE_LVDS_S_P1_MIN 2
271 #define IRONLAKE_LVDS_S_P1_MAX 8
272 #define IRONLAKE_LVDS_S_P2_SLOW 14
273 #define IRONLAKE_LVDS_S_P2_FAST 14
275 /* LVDS dual-channel 120Mhz refclk */
276 #define IRONLAKE_LVDS_D_N_MIN 1
277 #define IRONLAKE_LVDS_D_N_MAX 3
278 #define IRONLAKE_LVDS_D_M_MIN 79
279 #define IRONLAKE_LVDS_D_M_MAX 127
280 #define IRONLAKE_LVDS_D_P_MIN 14
281 #define IRONLAKE_LVDS_D_P_MAX 56
282 #define IRONLAKE_LVDS_D_P1_MIN 2
283 #define IRONLAKE_LVDS_D_P1_MAX 8
284 #define IRONLAKE_LVDS_D_P2_SLOW 7
285 #define IRONLAKE_LVDS_D_P2_FAST 7
287 /* LVDS single-channel 100Mhz refclk */
288 #define IRONLAKE_LVDS_S_SSC_N_MIN 1
289 #define IRONLAKE_LVDS_S_SSC_N_MAX 2
290 #define IRONLAKE_LVDS_S_SSC_M_MIN 79
291 #define IRONLAKE_LVDS_S_SSC_M_MAX 126
292 #define IRONLAKE_LVDS_S_SSC_P_MIN 28
293 #define IRONLAKE_LVDS_S_SSC_P_MAX 112
294 #define IRONLAKE_LVDS_S_SSC_P1_MIN 2
295 #define IRONLAKE_LVDS_S_SSC_P1_MAX 8
296 #define IRONLAKE_LVDS_S_SSC_P2_SLOW 14
297 #define IRONLAKE_LVDS_S_SSC_P2_FAST 14
299 /* LVDS dual-channel 100Mhz refclk */
300 #define IRONLAKE_LVDS_D_SSC_N_MIN 1
301 #define IRONLAKE_LVDS_D_SSC_N_MAX 3
302 #define IRONLAKE_LVDS_D_SSC_M_MIN 79
303 #define IRONLAKE_LVDS_D_SSC_M_MAX 126
304 #define IRONLAKE_LVDS_D_SSC_P_MIN 14
305 #define IRONLAKE_LVDS_D_SSC_P_MAX 42
306 #define IRONLAKE_LVDS_D_SSC_P1_MIN 2
307 #define IRONLAKE_LVDS_D_SSC_P1_MAX 6
308 #define IRONLAKE_LVDS_D_SSC_P2_SLOW 7
309 #define IRONLAKE_LVDS_D_SSC_P2_FAST 7
312 #define IRONLAKE_DP_N_MIN 1
313 #define IRONLAKE_DP_N_MAX 2
314 #define IRONLAKE_DP_M_MIN 81
315 #define IRONLAKE_DP_M_MAX 90
316 #define IRONLAKE_DP_P_MIN 10
317 #define IRONLAKE_DP_P_MAX 20
318 #define IRONLAKE_DP_P2_FAST 10
319 #define IRONLAKE_DP_P2_SLOW 10
320 #define IRONLAKE_DP_P2_LIMIT 0
321 #define IRONLAKE_DP_P1_MIN 1
322 #define IRONLAKE_DP_P1_MAX 2
325 intel_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
326 int target, int refclk, intel_clock_t *best_clock);
328 intel_g4x_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
329 int target, int refclk, intel_clock_t *best_clock);
332 intel_find_pll_g4x_dp(const intel_limit_t *, struct drm_crtc *crtc,
333 int target, int refclk, intel_clock_t *best_clock);
335 intel_find_pll_ironlake_dp(const intel_limit_t *, struct drm_crtc *crtc,
336 int target, int refclk, intel_clock_t *best_clock);
338 static const intel_limit_t intel_limits_i8xx_dvo = {
339 .dot = { .min = I8XX_DOT_MIN, .max = I8XX_DOT_MAX },
340 .vco = { .min = I8XX_VCO_MIN, .max = I8XX_VCO_MAX },
341 .n = { .min = I8XX_N_MIN, .max = I8XX_N_MAX },
342 .m = { .min = I8XX_M_MIN, .max = I8XX_M_MAX },
343 .m1 = { .min = I8XX_M1_MIN, .max = I8XX_M1_MAX },
344 .m2 = { .min = I8XX_M2_MIN, .max = I8XX_M2_MAX },
345 .p = { .min = I8XX_P_MIN, .max = I8XX_P_MAX },
346 .p1 = { .min = I8XX_P1_MIN, .max = I8XX_P1_MAX },
347 .p2 = { .dot_limit = I8XX_P2_SLOW_LIMIT,
348 .p2_slow = I8XX_P2_SLOW, .p2_fast = I8XX_P2_FAST },
349 .find_pll = intel_find_best_PLL,
352 static const intel_limit_t intel_limits_i8xx_lvds = {
353 .dot = { .min = I8XX_DOT_MIN, .max = I8XX_DOT_MAX },
354 .vco = { .min = I8XX_VCO_MIN, .max = I8XX_VCO_MAX },
355 .n = { .min = I8XX_N_MIN, .max = I8XX_N_MAX },
356 .m = { .min = I8XX_M_MIN, .max = I8XX_M_MAX },
357 .m1 = { .min = I8XX_M1_MIN, .max = I8XX_M1_MAX },
358 .m2 = { .min = I8XX_M2_MIN, .max = I8XX_M2_MAX },
359 .p = { .min = I8XX_P_MIN, .max = I8XX_P_MAX },
360 .p1 = { .min = I8XX_P1_LVDS_MIN, .max = I8XX_P1_LVDS_MAX },
361 .p2 = { .dot_limit = I8XX_P2_SLOW_LIMIT,
362 .p2_slow = I8XX_P2_LVDS_SLOW, .p2_fast = I8XX_P2_LVDS_FAST },
363 .find_pll = intel_find_best_PLL,
366 static const intel_limit_t intel_limits_i9xx_sdvo = {
367 .dot = { .min = I9XX_DOT_MIN, .max = I9XX_DOT_MAX },
368 .vco = { .min = I9XX_VCO_MIN, .max = I9XX_VCO_MAX },
369 .n = { .min = I9XX_N_MIN, .max = I9XX_N_MAX },
370 .m = { .min = I9XX_M_MIN, .max = I9XX_M_MAX },
371 .m1 = { .min = I9XX_M1_MIN, .max = I9XX_M1_MAX },
372 .m2 = { .min = I9XX_M2_MIN, .max = I9XX_M2_MAX },
373 .p = { .min = I9XX_P_SDVO_DAC_MIN, .max = I9XX_P_SDVO_DAC_MAX },
374 .p1 = { .min = I9XX_P1_MIN, .max = I9XX_P1_MAX },
375 .p2 = { .dot_limit = I9XX_P2_SDVO_DAC_SLOW_LIMIT,
376 .p2_slow = I9XX_P2_SDVO_DAC_SLOW, .p2_fast = I9XX_P2_SDVO_DAC_FAST },
377 .find_pll = intel_find_best_PLL,
380 static const intel_limit_t intel_limits_i9xx_lvds = {
381 .dot = { .min = I9XX_DOT_MIN, .max = I9XX_DOT_MAX },
382 .vco = { .min = I9XX_VCO_MIN, .max = I9XX_VCO_MAX },
383 .n = { .min = I9XX_N_MIN, .max = I9XX_N_MAX },
384 .m = { .min = I9XX_M_MIN, .max = I9XX_M_MAX },
385 .m1 = { .min = I9XX_M1_MIN, .max = I9XX_M1_MAX },
386 .m2 = { .min = I9XX_M2_MIN, .max = I9XX_M2_MAX },
387 .p = { .min = I9XX_P_LVDS_MIN, .max = I9XX_P_LVDS_MAX },
388 .p1 = { .min = I9XX_P1_MIN, .max = I9XX_P1_MAX },
389 /* The single-channel range is 25-112Mhz, and dual-channel
390 * is 80-224Mhz. Prefer single channel as much as possible.
392 .p2 = { .dot_limit = I9XX_P2_LVDS_SLOW_LIMIT,
393 .p2_slow = I9XX_P2_LVDS_SLOW, .p2_fast = I9XX_P2_LVDS_FAST },
394 .find_pll = intel_find_best_PLL,
397 /* below parameter and function is for G4X Chipset Family*/
398 static const intel_limit_t intel_limits_g4x_sdvo = {
399 .dot = { .min = G4X_DOT_SDVO_MIN, .max = G4X_DOT_SDVO_MAX },
400 .vco = { .min = G4X_VCO_MIN, .max = G4X_VCO_MAX},
401 .n = { .min = G4X_N_SDVO_MIN, .max = G4X_N_SDVO_MAX },
402 .m = { .min = G4X_M_SDVO_MIN, .max = G4X_M_SDVO_MAX },
403 .m1 = { .min = G4X_M1_SDVO_MIN, .max = G4X_M1_SDVO_MAX },
404 .m2 = { .min = G4X_M2_SDVO_MIN, .max = G4X_M2_SDVO_MAX },
405 .p = { .min = G4X_P_SDVO_MIN, .max = G4X_P_SDVO_MAX },
406 .p1 = { .min = G4X_P1_SDVO_MIN, .max = G4X_P1_SDVO_MAX},
407 .p2 = { .dot_limit = G4X_P2_SDVO_LIMIT,
408 .p2_slow = G4X_P2_SDVO_SLOW,
409 .p2_fast = G4X_P2_SDVO_FAST
411 .find_pll = intel_g4x_find_best_PLL,
414 static const intel_limit_t intel_limits_g4x_hdmi = {
415 .dot = { .min = G4X_DOT_HDMI_DAC_MIN, .max = G4X_DOT_HDMI_DAC_MAX },
416 .vco = { .min = G4X_VCO_MIN, .max = G4X_VCO_MAX},
417 .n = { .min = G4X_N_HDMI_DAC_MIN, .max = G4X_N_HDMI_DAC_MAX },
418 .m = { .min = G4X_M_HDMI_DAC_MIN, .max = G4X_M_HDMI_DAC_MAX },
419 .m1 = { .min = G4X_M1_HDMI_DAC_MIN, .max = G4X_M1_HDMI_DAC_MAX },
420 .m2 = { .min = G4X_M2_HDMI_DAC_MIN, .max = G4X_M2_HDMI_DAC_MAX },
421 .p = { .min = G4X_P_HDMI_DAC_MIN, .max = G4X_P_HDMI_DAC_MAX },
422 .p1 = { .min = G4X_P1_HDMI_DAC_MIN, .max = G4X_P1_HDMI_DAC_MAX},
423 .p2 = { .dot_limit = G4X_P2_HDMI_DAC_LIMIT,
424 .p2_slow = G4X_P2_HDMI_DAC_SLOW,
425 .p2_fast = G4X_P2_HDMI_DAC_FAST
427 .find_pll = intel_g4x_find_best_PLL,
430 static const intel_limit_t intel_limits_g4x_single_channel_lvds = {
431 .dot = { .min = G4X_DOT_SINGLE_CHANNEL_LVDS_MIN,
432 .max = G4X_DOT_SINGLE_CHANNEL_LVDS_MAX },
433 .vco = { .min = G4X_VCO_MIN,
434 .max = G4X_VCO_MAX },
435 .n = { .min = G4X_N_SINGLE_CHANNEL_LVDS_MIN,
436 .max = G4X_N_SINGLE_CHANNEL_LVDS_MAX },
437 .m = { .min = G4X_M_SINGLE_CHANNEL_LVDS_MIN,
438 .max = G4X_M_SINGLE_CHANNEL_LVDS_MAX },
439 .m1 = { .min = G4X_M1_SINGLE_CHANNEL_LVDS_MIN,
440 .max = G4X_M1_SINGLE_CHANNEL_LVDS_MAX },
441 .m2 = { .min = G4X_M2_SINGLE_CHANNEL_LVDS_MIN,
442 .max = G4X_M2_SINGLE_CHANNEL_LVDS_MAX },
443 .p = { .min = G4X_P_SINGLE_CHANNEL_LVDS_MIN,
444 .max = G4X_P_SINGLE_CHANNEL_LVDS_MAX },
445 .p1 = { .min = G4X_P1_SINGLE_CHANNEL_LVDS_MIN,
446 .max = G4X_P1_SINGLE_CHANNEL_LVDS_MAX },
447 .p2 = { .dot_limit = G4X_P2_SINGLE_CHANNEL_LVDS_LIMIT,
448 .p2_slow = G4X_P2_SINGLE_CHANNEL_LVDS_SLOW,
449 .p2_fast = G4X_P2_SINGLE_CHANNEL_LVDS_FAST
451 .find_pll = intel_g4x_find_best_PLL,
454 static const intel_limit_t intel_limits_g4x_dual_channel_lvds = {
455 .dot = { .min = G4X_DOT_DUAL_CHANNEL_LVDS_MIN,
456 .max = G4X_DOT_DUAL_CHANNEL_LVDS_MAX },
457 .vco = { .min = G4X_VCO_MIN,
458 .max = G4X_VCO_MAX },
459 .n = { .min = G4X_N_DUAL_CHANNEL_LVDS_MIN,
460 .max = G4X_N_DUAL_CHANNEL_LVDS_MAX },
461 .m = { .min = G4X_M_DUAL_CHANNEL_LVDS_MIN,
462 .max = G4X_M_DUAL_CHANNEL_LVDS_MAX },
463 .m1 = { .min = G4X_M1_DUAL_CHANNEL_LVDS_MIN,
464 .max = G4X_M1_DUAL_CHANNEL_LVDS_MAX },
465 .m2 = { .min = G4X_M2_DUAL_CHANNEL_LVDS_MIN,
466 .max = G4X_M2_DUAL_CHANNEL_LVDS_MAX },
467 .p = { .min = G4X_P_DUAL_CHANNEL_LVDS_MIN,
468 .max = G4X_P_DUAL_CHANNEL_LVDS_MAX },
469 .p1 = { .min = G4X_P1_DUAL_CHANNEL_LVDS_MIN,
470 .max = G4X_P1_DUAL_CHANNEL_LVDS_MAX },
471 .p2 = { .dot_limit = G4X_P2_DUAL_CHANNEL_LVDS_LIMIT,
472 .p2_slow = G4X_P2_DUAL_CHANNEL_LVDS_SLOW,
473 .p2_fast = G4X_P2_DUAL_CHANNEL_LVDS_FAST
475 .find_pll = intel_g4x_find_best_PLL,
478 static const intel_limit_t intel_limits_g4x_display_port = {
479 .dot = { .min = G4X_DOT_DISPLAY_PORT_MIN,
480 .max = G4X_DOT_DISPLAY_PORT_MAX },
481 .vco = { .min = G4X_VCO_MIN,
483 .n = { .min = G4X_N_DISPLAY_PORT_MIN,
484 .max = G4X_N_DISPLAY_PORT_MAX },
485 .m = { .min = G4X_M_DISPLAY_PORT_MIN,
486 .max = G4X_M_DISPLAY_PORT_MAX },
487 .m1 = { .min = G4X_M1_DISPLAY_PORT_MIN,
488 .max = G4X_M1_DISPLAY_PORT_MAX },
489 .m2 = { .min = G4X_M2_DISPLAY_PORT_MIN,
490 .max = G4X_M2_DISPLAY_PORT_MAX },
491 .p = { .min = G4X_P_DISPLAY_PORT_MIN,
492 .max = G4X_P_DISPLAY_PORT_MAX },
493 .p1 = { .min = G4X_P1_DISPLAY_PORT_MIN,
494 .max = G4X_P1_DISPLAY_PORT_MAX},
495 .p2 = { .dot_limit = G4X_P2_DISPLAY_PORT_LIMIT,
496 .p2_slow = G4X_P2_DISPLAY_PORT_SLOW,
497 .p2_fast = G4X_P2_DISPLAY_PORT_FAST },
498 .find_pll = intel_find_pll_g4x_dp,
501 static const intel_limit_t intel_limits_pineview_sdvo = {
502 .dot = { .min = I9XX_DOT_MIN, .max = I9XX_DOT_MAX},
503 .vco = { .min = PINEVIEW_VCO_MIN, .max = PINEVIEW_VCO_MAX },
504 .n = { .min = PINEVIEW_N_MIN, .max = PINEVIEW_N_MAX },
505 .m = { .min = PINEVIEW_M_MIN, .max = PINEVIEW_M_MAX },
506 .m1 = { .min = PINEVIEW_M1_MIN, .max = PINEVIEW_M1_MAX },
507 .m2 = { .min = PINEVIEW_M2_MIN, .max = PINEVIEW_M2_MAX },
508 .p = { .min = I9XX_P_SDVO_DAC_MIN, .max = I9XX_P_SDVO_DAC_MAX },
509 .p1 = { .min = I9XX_P1_MIN, .max = I9XX_P1_MAX },
510 .p2 = { .dot_limit = I9XX_P2_SDVO_DAC_SLOW_LIMIT,
511 .p2_slow = I9XX_P2_SDVO_DAC_SLOW, .p2_fast = I9XX_P2_SDVO_DAC_FAST },
512 .find_pll = intel_find_best_PLL,
515 static const intel_limit_t intel_limits_pineview_lvds = {
516 .dot = { .min = I9XX_DOT_MIN, .max = I9XX_DOT_MAX },
517 .vco = { .min = PINEVIEW_VCO_MIN, .max = PINEVIEW_VCO_MAX },
518 .n = { .min = PINEVIEW_N_MIN, .max = PINEVIEW_N_MAX },
519 .m = { .min = PINEVIEW_M_MIN, .max = PINEVIEW_M_MAX },
520 .m1 = { .min = PINEVIEW_M1_MIN, .max = PINEVIEW_M1_MAX },
521 .m2 = { .min = PINEVIEW_M2_MIN, .max = PINEVIEW_M2_MAX },
522 .p = { .min = PINEVIEW_P_LVDS_MIN, .max = PINEVIEW_P_LVDS_MAX },
523 .p1 = { .min = I9XX_P1_MIN, .max = I9XX_P1_MAX },
524 /* Pineview only supports single-channel mode. */
525 .p2 = { .dot_limit = I9XX_P2_LVDS_SLOW_LIMIT,
526 .p2_slow = I9XX_P2_LVDS_SLOW, .p2_fast = I9XX_P2_LVDS_SLOW },
527 .find_pll = intel_find_best_PLL,
530 static const intel_limit_t intel_limits_ironlake_dac = {
531 .dot = { .min = IRONLAKE_DOT_MIN, .max = IRONLAKE_DOT_MAX },
532 .vco = { .min = IRONLAKE_VCO_MIN, .max = IRONLAKE_VCO_MAX },
533 .n = { .min = IRONLAKE_DAC_N_MIN, .max = IRONLAKE_DAC_N_MAX },
534 .m = { .min = IRONLAKE_DAC_M_MIN, .max = IRONLAKE_DAC_M_MAX },
535 .m1 = { .min = IRONLAKE_M1_MIN, .max = IRONLAKE_M1_MAX },
536 .m2 = { .min = IRONLAKE_M2_MIN, .max = IRONLAKE_M2_MAX },
537 .p = { .min = IRONLAKE_DAC_P_MIN, .max = IRONLAKE_DAC_P_MAX },
538 .p1 = { .min = IRONLAKE_DAC_P1_MIN, .max = IRONLAKE_DAC_P1_MAX },
539 .p2 = { .dot_limit = IRONLAKE_P2_DOT_LIMIT,
540 .p2_slow = IRONLAKE_DAC_P2_SLOW,
541 .p2_fast = IRONLAKE_DAC_P2_FAST },
542 .find_pll = intel_g4x_find_best_PLL,
545 static const intel_limit_t intel_limits_ironlake_single_lvds = {
546 .dot = { .min = IRONLAKE_DOT_MIN, .max = IRONLAKE_DOT_MAX },
547 .vco = { .min = IRONLAKE_VCO_MIN, .max = IRONLAKE_VCO_MAX },
548 .n = { .min = IRONLAKE_LVDS_S_N_MIN, .max = IRONLAKE_LVDS_S_N_MAX },
549 .m = { .min = IRONLAKE_LVDS_S_M_MIN, .max = IRONLAKE_LVDS_S_M_MAX },
550 .m1 = { .min = IRONLAKE_M1_MIN, .max = IRONLAKE_M1_MAX },
551 .m2 = { .min = IRONLAKE_M2_MIN, .max = IRONLAKE_M2_MAX },
552 .p = { .min = IRONLAKE_LVDS_S_P_MIN, .max = IRONLAKE_LVDS_S_P_MAX },
553 .p1 = { .min = IRONLAKE_LVDS_S_P1_MIN, .max = IRONLAKE_LVDS_S_P1_MAX },
554 .p2 = { .dot_limit = IRONLAKE_P2_DOT_LIMIT,
555 .p2_slow = IRONLAKE_LVDS_S_P2_SLOW,
556 .p2_fast = IRONLAKE_LVDS_S_P2_FAST },
557 .find_pll = intel_g4x_find_best_PLL,
560 static const intel_limit_t intel_limits_ironlake_dual_lvds = {
561 .dot = { .min = IRONLAKE_DOT_MIN, .max = IRONLAKE_DOT_MAX },
562 .vco = { .min = IRONLAKE_VCO_MIN, .max = IRONLAKE_VCO_MAX },
563 .n = { .min = IRONLAKE_LVDS_D_N_MIN, .max = IRONLAKE_LVDS_D_N_MAX },
564 .m = { .min = IRONLAKE_LVDS_D_M_MIN, .max = IRONLAKE_LVDS_D_M_MAX },
565 .m1 = { .min = IRONLAKE_M1_MIN, .max = IRONLAKE_M1_MAX },
566 .m2 = { .min = IRONLAKE_M2_MIN, .max = IRONLAKE_M2_MAX },
567 .p = { .min = IRONLAKE_LVDS_D_P_MIN, .max = IRONLAKE_LVDS_D_P_MAX },
568 .p1 = { .min = IRONLAKE_LVDS_D_P1_MIN, .max = IRONLAKE_LVDS_D_P1_MAX },
569 .p2 = { .dot_limit = IRONLAKE_P2_DOT_LIMIT,
570 .p2_slow = IRONLAKE_LVDS_D_P2_SLOW,
571 .p2_fast = IRONLAKE_LVDS_D_P2_FAST },
572 .find_pll = intel_g4x_find_best_PLL,
575 static const intel_limit_t intel_limits_ironlake_single_lvds_100m = {
576 .dot = { .min = IRONLAKE_DOT_MIN, .max = IRONLAKE_DOT_MAX },
577 .vco = { .min = IRONLAKE_VCO_MIN, .max = IRONLAKE_VCO_MAX },
578 .n = { .min = IRONLAKE_LVDS_S_SSC_N_MIN, .max = IRONLAKE_LVDS_S_SSC_N_MAX },
579 .m = { .min = IRONLAKE_LVDS_S_SSC_M_MIN, .max = IRONLAKE_LVDS_S_SSC_M_MAX },
580 .m1 = { .min = IRONLAKE_M1_MIN, .max = IRONLAKE_M1_MAX },
581 .m2 = { .min = IRONLAKE_M2_MIN, .max = IRONLAKE_M2_MAX },
582 .p = { .min = IRONLAKE_LVDS_S_SSC_P_MIN, .max = IRONLAKE_LVDS_S_SSC_P_MAX },
583 .p1 = { .min = IRONLAKE_LVDS_S_SSC_P1_MIN,.max = IRONLAKE_LVDS_S_SSC_P1_MAX },
584 .p2 = { .dot_limit = IRONLAKE_P2_DOT_LIMIT,
585 .p2_slow = IRONLAKE_LVDS_S_SSC_P2_SLOW,
586 .p2_fast = IRONLAKE_LVDS_S_SSC_P2_FAST },
587 .find_pll = intel_g4x_find_best_PLL,
590 static const intel_limit_t intel_limits_ironlake_dual_lvds_100m = {
591 .dot = { .min = IRONLAKE_DOT_MIN, .max = IRONLAKE_DOT_MAX },
592 .vco = { .min = IRONLAKE_VCO_MIN, .max = IRONLAKE_VCO_MAX },
593 .n = { .min = IRONLAKE_LVDS_D_SSC_N_MIN, .max = IRONLAKE_LVDS_D_SSC_N_MAX },
594 .m = { .min = IRONLAKE_LVDS_D_SSC_M_MIN, .max = IRONLAKE_LVDS_D_SSC_M_MAX },
595 .m1 = { .min = IRONLAKE_M1_MIN, .max = IRONLAKE_M1_MAX },
596 .m2 = { .min = IRONLAKE_M2_MIN, .max = IRONLAKE_M2_MAX },
597 .p = { .min = IRONLAKE_LVDS_D_SSC_P_MIN, .max = IRONLAKE_LVDS_D_SSC_P_MAX },
598 .p1 = { .min = IRONLAKE_LVDS_D_SSC_P1_MIN,.max = IRONLAKE_LVDS_D_SSC_P1_MAX },
599 .p2 = { .dot_limit = IRONLAKE_P2_DOT_LIMIT,
600 .p2_slow = IRONLAKE_LVDS_D_SSC_P2_SLOW,
601 .p2_fast = IRONLAKE_LVDS_D_SSC_P2_FAST },
602 .find_pll = intel_g4x_find_best_PLL,
605 static const intel_limit_t intel_limits_ironlake_display_port = {
606 .dot = { .min = IRONLAKE_DOT_MIN,
607 .max = IRONLAKE_DOT_MAX },
608 .vco = { .min = IRONLAKE_VCO_MIN,
609 .max = IRONLAKE_VCO_MAX},
610 .n = { .min = IRONLAKE_DP_N_MIN,
611 .max = IRONLAKE_DP_N_MAX },
612 .m = { .min = IRONLAKE_DP_M_MIN,
613 .max = IRONLAKE_DP_M_MAX },
614 .m1 = { .min = IRONLAKE_M1_MIN,
615 .max = IRONLAKE_M1_MAX },
616 .m2 = { .min = IRONLAKE_M2_MIN,
617 .max = IRONLAKE_M2_MAX },
618 .p = { .min = IRONLAKE_DP_P_MIN,
619 .max = IRONLAKE_DP_P_MAX },
620 .p1 = { .min = IRONLAKE_DP_P1_MIN,
621 .max = IRONLAKE_DP_P1_MAX},
622 .p2 = { .dot_limit = IRONLAKE_DP_P2_LIMIT,
623 .p2_slow = IRONLAKE_DP_P2_SLOW,
624 .p2_fast = IRONLAKE_DP_P2_FAST },
625 .find_pll = intel_find_pll_ironlake_dp,
628 static const intel_limit_t *intel_ironlake_limit(struct drm_crtc *crtc)
630 struct drm_device *dev = crtc->dev;
631 struct drm_i915_private *dev_priv = dev->dev_private;
632 const intel_limit_t *limit;
635 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
636 if (dev_priv->lvds_use_ssc && dev_priv->lvds_ssc_freq == 100)
639 if ((I915_READ(PCH_LVDS) & LVDS_CLKB_POWER_MASK) ==
640 LVDS_CLKB_POWER_UP) {
641 /* LVDS dual channel */
643 limit = &intel_limits_ironlake_dual_lvds_100m;
645 limit = &intel_limits_ironlake_dual_lvds;
648 limit = &intel_limits_ironlake_single_lvds_100m;
650 limit = &intel_limits_ironlake_single_lvds;
652 } else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT) ||
654 limit = &intel_limits_ironlake_display_port;
656 limit = &intel_limits_ironlake_dac;
661 static const intel_limit_t *intel_g4x_limit(struct drm_crtc *crtc)
663 struct drm_device *dev = crtc->dev;
664 struct drm_i915_private *dev_priv = dev->dev_private;
665 const intel_limit_t *limit;
667 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
668 if ((I915_READ(LVDS) & LVDS_CLKB_POWER_MASK) ==
670 /* LVDS with dual channel */
671 limit = &intel_limits_g4x_dual_channel_lvds;
673 /* LVDS with dual channel */
674 limit = &intel_limits_g4x_single_channel_lvds;
675 } else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI) ||
676 intel_pipe_has_type(crtc, INTEL_OUTPUT_ANALOG)) {
677 limit = &intel_limits_g4x_hdmi;
678 } else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_SDVO)) {
679 limit = &intel_limits_g4x_sdvo;
680 } else if (intel_pipe_has_type (crtc, INTEL_OUTPUT_DISPLAYPORT)) {
681 limit = &intel_limits_g4x_display_port;
682 } else /* The option is for other outputs */
683 limit = &intel_limits_i9xx_sdvo;
688 static const intel_limit_t *intel_limit(struct drm_crtc *crtc)
690 struct drm_device *dev = crtc->dev;
691 const intel_limit_t *limit;
693 if (HAS_PCH_SPLIT(dev))
694 limit = intel_ironlake_limit(crtc);
695 else if (IS_G4X(dev)) {
696 limit = intel_g4x_limit(crtc);
697 } else if (IS_I9XX(dev) && !IS_PINEVIEW(dev)) {
698 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
699 limit = &intel_limits_i9xx_lvds;
701 limit = &intel_limits_i9xx_sdvo;
702 } else if (IS_PINEVIEW(dev)) {
703 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
704 limit = &intel_limits_pineview_lvds;
706 limit = &intel_limits_pineview_sdvo;
708 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
709 limit = &intel_limits_i8xx_lvds;
711 limit = &intel_limits_i8xx_dvo;
716 /* m1 is reserved as 0 in Pineview, n is a ring counter */
717 static void pineview_clock(int refclk, intel_clock_t *clock)
719 clock->m = clock->m2 + 2;
720 clock->p = clock->p1 * clock->p2;
721 clock->vco = refclk * clock->m / clock->n;
722 clock->dot = clock->vco / clock->p;
725 static void intel_clock(struct drm_device *dev, int refclk, intel_clock_t *clock)
727 if (IS_PINEVIEW(dev)) {
728 pineview_clock(refclk, clock);
731 clock->m = 5 * (clock->m1 + 2) + (clock->m2 + 2);
732 clock->p = clock->p1 * clock->p2;
733 clock->vco = refclk * clock->m / (clock->n + 2);
734 clock->dot = clock->vco / clock->p;
738 * Returns whether any output on the specified pipe is of the specified type
740 bool intel_pipe_has_type (struct drm_crtc *crtc, int type)
742 struct drm_device *dev = crtc->dev;
743 struct drm_mode_config *mode_config = &dev->mode_config;
744 struct drm_encoder *l_entry;
746 list_for_each_entry(l_entry, &mode_config->encoder_list, head) {
747 if (l_entry && l_entry->crtc == crtc) {
748 struct intel_encoder *intel_encoder = enc_to_intel_encoder(l_entry);
749 if (intel_encoder->type == type)
756 #define INTELPllInvalid(s) do { /* DRM_DEBUG(s); */ return false; } while (0)
758 * Returns whether the given set of divisors are valid for a given refclk with
759 * the given connectors.
762 static bool intel_PLL_is_valid(struct drm_crtc *crtc, intel_clock_t *clock)
764 const intel_limit_t *limit = intel_limit (crtc);
765 struct drm_device *dev = crtc->dev;
767 if (clock->p1 < limit->p1.min || limit->p1.max < clock->p1)
768 INTELPllInvalid ("p1 out of range\n");
769 if (clock->p < limit->p.min || limit->p.max < clock->p)
770 INTELPllInvalid ("p out of range\n");
771 if (clock->m2 < limit->m2.min || limit->m2.max < clock->m2)
772 INTELPllInvalid ("m2 out of range\n");
773 if (clock->m1 < limit->m1.min || limit->m1.max < clock->m1)
774 INTELPllInvalid ("m1 out of range\n");
775 if (clock->m1 <= clock->m2 && !IS_PINEVIEW(dev))
776 INTELPllInvalid ("m1 <= m2\n");
777 if (clock->m < limit->m.min || limit->m.max < clock->m)
778 INTELPllInvalid ("m out of range\n");
779 if (clock->n < limit->n.min || limit->n.max < clock->n)
780 INTELPllInvalid ("n out of range\n");
781 if (clock->vco < limit->vco.min || limit->vco.max < clock->vco)
782 INTELPllInvalid ("vco out of range\n");
783 /* XXX: We may need to be checking "Dot clock" depending on the multiplier,
784 * connector, etc., rather than just a single range.
786 if (clock->dot < limit->dot.min || limit->dot.max < clock->dot)
787 INTELPllInvalid ("dot out of range\n");
793 intel_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
794 int target, int refclk, intel_clock_t *best_clock)
797 struct drm_device *dev = crtc->dev;
798 struct drm_i915_private *dev_priv = dev->dev_private;
802 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) &&
803 (I915_READ(LVDS)) != 0) {
805 * For LVDS, if the panel is on, just rely on its current
806 * settings for dual-channel. We haven't figured out how to
807 * reliably set up different single/dual channel state, if we
810 if ((I915_READ(LVDS) & LVDS_CLKB_POWER_MASK) ==
812 clock.p2 = limit->p2.p2_fast;
814 clock.p2 = limit->p2.p2_slow;
816 if (target < limit->p2.dot_limit)
817 clock.p2 = limit->p2.p2_slow;
819 clock.p2 = limit->p2.p2_fast;
822 memset (best_clock, 0, sizeof (*best_clock));
824 for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max;
826 for (clock.m2 = limit->m2.min;
827 clock.m2 <= limit->m2.max; clock.m2++) {
828 /* m1 is always 0 in Pineview */
829 if (clock.m2 >= clock.m1 && !IS_PINEVIEW(dev))
831 for (clock.n = limit->n.min;
832 clock.n <= limit->n.max; clock.n++) {
833 for (clock.p1 = limit->p1.min;
834 clock.p1 <= limit->p1.max; clock.p1++) {
837 intel_clock(dev, refclk, &clock);
839 if (!intel_PLL_is_valid(crtc, &clock))
842 this_err = abs(clock.dot - target);
843 if (this_err < err) {
852 return (err != target);
856 intel_g4x_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
857 int target, int refclk, intel_clock_t *best_clock)
859 struct drm_device *dev = crtc->dev;
860 struct drm_i915_private *dev_priv = dev->dev_private;
864 /* approximately equals target * 0.00488 */
865 int err_most = (target >> 8) + (target >> 10);
868 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
871 if (HAS_PCH_SPLIT(dev))
875 if ((I915_READ(lvds_reg) & LVDS_CLKB_POWER_MASK) ==
877 clock.p2 = limit->p2.p2_fast;
879 clock.p2 = limit->p2.p2_slow;
881 if (target < limit->p2.dot_limit)
882 clock.p2 = limit->p2.p2_slow;
884 clock.p2 = limit->p2.p2_fast;
887 memset(best_clock, 0, sizeof(*best_clock));
888 max_n = limit->n.max;
889 /* based on hardware requriment prefer smaller n to precision */
890 for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) {
891 /* based on hardware requirment prefere larger m1,m2 */
892 for (clock.m1 = limit->m1.max;
893 clock.m1 >= limit->m1.min; clock.m1--) {
894 for (clock.m2 = limit->m2.max;
895 clock.m2 >= limit->m2.min; clock.m2--) {
896 for (clock.p1 = limit->p1.max;
897 clock.p1 >= limit->p1.min; clock.p1--) {
900 intel_clock(dev, refclk, &clock);
901 if (!intel_PLL_is_valid(crtc, &clock))
903 this_err = abs(clock.dot - target) ;
904 if (this_err < err_most) {
918 intel_find_pll_ironlake_dp(const intel_limit_t *limit, struct drm_crtc *crtc,
919 int target, int refclk, intel_clock_t *best_clock)
921 struct drm_device *dev = crtc->dev;
924 /* return directly when it is eDP */
928 if (target < 200000) {
941 intel_clock(dev, refclk, &clock);
942 memcpy(best_clock, &clock, sizeof(intel_clock_t));
946 /* DisplayPort has only two frequencies, 162MHz and 270MHz */
948 intel_find_pll_g4x_dp(const intel_limit_t *limit, struct drm_crtc *crtc,
949 int target, int refclk, intel_clock_t *best_clock)
952 if (target < 200000) {
965 clock.m = 5 * (clock.m1 + 2) + (clock.m2 + 2);
966 clock.p = (clock.p1 * clock.p2);
967 clock.dot = 96000 * clock.m / (clock.n + 2) / clock.p;
969 memcpy(best_clock, &clock, sizeof(intel_clock_t));
974 intel_wait_for_vblank(struct drm_device *dev)
976 /* Wait for 20ms, i.e. one cycle at 50hz. */
980 /* Parameters have changed, update FBC info */
981 static void i8xx_enable_fbc(struct drm_crtc *crtc, unsigned long interval)
983 struct drm_device *dev = crtc->dev;
984 struct drm_i915_private *dev_priv = dev->dev_private;
985 struct drm_framebuffer *fb = crtc->fb;
986 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
987 struct drm_i915_gem_object *obj_priv = to_intel_bo(intel_fb->obj);
988 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
990 u32 fbc_ctl, fbc_ctl2;
992 dev_priv->cfb_pitch = dev_priv->cfb_size / FBC_LL_SIZE;
994 if (fb->pitch < dev_priv->cfb_pitch)
995 dev_priv->cfb_pitch = fb->pitch;
997 /* FBC_CTL wants 64B units */
998 dev_priv->cfb_pitch = (dev_priv->cfb_pitch / 64) - 1;
999 dev_priv->cfb_fence = obj_priv->fence_reg;
1000 dev_priv->cfb_plane = intel_crtc->plane;
1001 plane = dev_priv->cfb_plane == 0 ? FBC_CTL_PLANEA : FBC_CTL_PLANEB;
1003 /* Clear old tags */
1004 for (i = 0; i < (FBC_LL_SIZE / 32) + 1; i++)
1005 I915_WRITE(FBC_TAG + (i * 4), 0);
1008 fbc_ctl2 = FBC_CTL_FENCE_DBL | FBC_CTL_IDLE_IMM | plane;
1009 if (obj_priv->tiling_mode != I915_TILING_NONE)
1010 fbc_ctl2 |= FBC_CTL_CPU_FENCE;
1011 I915_WRITE(FBC_CONTROL2, fbc_ctl2);
1012 I915_WRITE(FBC_FENCE_OFF, crtc->y);
1015 fbc_ctl = FBC_CTL_EN | FBC_CTL_PERIODIC;
1017 fbc_ctl |= FBC_CTL_C3_IDLE; /* 945 needs special SR handling */
1018 fbc_ctl |= (dev_priv->cfb_pitch & 0xff) << FBC_CTL_STRIDE_SHIFT;
1019 fbc_ctl |= (interval & 0x2fff) << FBC_CTL_INTERVAL_SHIFT;
1020 if (obj_priv->tiling_mode != I915_TILING_NONE)
1021 fbc_ctl |= dev_priv->cfb_fence;
1022 I915_WRITE(FBC_CONTROL, fbc_ctl);
1024 DRM_DEBUG_KMS("enabled FBC, pitch %ld, yoff %d, plane %d, ",
1025 dev_priv->cfb_pitch, crtc->y, dev_priv->cfb_plane);
1028 void i8xx_disable_fbc(struct drm_device *dev)
1030 struct drm_i915_private *dev_priv = dev->dev_private;
1033 if (!I915_HAS_FBC(dev))
1036 /* Disable compression */
1037 fbc_ctl = I915_READ(FBC_CONTROL);
1038 fbc_ctl &= ~FBC_CTL_EN;
1039 I915_WRITE(FBC_CONTROL, fbc_ctl);
1041 /* Wait for compressing bit to clear */
1042 while (I915_READ(FBC_STATUS) & FBC_STAT_COMPRESSING)
1045 intel_wait_for_vblank(dev);
1047 DRM_DEBUG_KMS("disabled FBC\n");
1050 static bool i8xx_fbc_enabled(struct drm_crtc *crtc)
1052 struct drm_device *dev = crtc->dev;
1053 struct drm_i915_private *dev_priv = dev->dev_private;
1055 return I915_READ(FBC_CONTROL) & FBC_CTL_EN;
1058 static void g4x_enable_fbc(struct drm_crtc *crtc, unsigned long interval)
1060 struct drm_device *dev = crtc->dev;
1061 struct drm_i915_private *dev_priv = dev->dev_private;
1062 struct drm_framebuffer *fb = crtc->fb;
1063 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
1064 struct drm_i915_gem_object *obj_priv = to_intel_bo(intel_fb->obj);
1065 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1066 int plane = (intel_crtc->plane == 0 ? DPFC_CTL_PLANEA :
1068 unsigned long stall_watermark = 200;
1071 dev_priv->cfb_pitch = (dev_priv->cfb_pitch / 64) - 1;
1072 dev_priv->cfb_fence = obj_priv->fence_reg;
1073 dev_priv->cfb_plane = intel_crtc->plane;
1075 dpfc_ctl = plane | DPFC_SR_EN | DPFC_CTL_LIMIT_1X;
1076 if (obj_priv->tiling_mode != I915_TILING_NONE) {
1077 dpfc_ctl |= DPFC_CTL_FENCE_EN | dev_priv->cfb_fence;
1078 I915_WRITE(DPFC_CHICKEN, DPFC_HT_MODIFY);
1080 I915_WRITE(DPFC_CHICKEN, ~DPFC_HT_MODIFY);
1083 I915_WRITE(DPFC_CONTROL, dpfc_ctl);
1084 I915_WRITE(DPFC_RECOMP_CTL, DPFC_RECOMP_STALL_EN |
1085 (stall_watermark << DPFC_RECOMP_STALL_WM_SHIFT) |
1086 (interval << DPFC_RECOMP_TIMER_COUNT_SHIFT));
1087 I915_WRITE(DPFC_FENCE_YOFF, crtc->y);
1090 I915_WRITE(DPFC_CONTROL, I915_READ(DPFC_CONTROL) | DPFC_CTL_EN);
1092 DRM_DEBUG_KMS("enabled fbc on plane %d\n", intel_crtc->plane);
1095 void g4x_disable_fbc(struct drm_device *dev)
1097 struct drm_i915_private *dev_priv = dev->dev_private;
1100 /* Disable compression */
1101 dpfc_ctl = I915_READ(DPFC_CONTROL);
1102 dpfc_ctl &= ~DPFC_CTL_EN;
1103 I915_WRITE(DPFC_CONTROL, dpfc_ctl);
1104 intel_wait_for_vblank(dev);
1106 DRM_DEBUG_KMS("disabled FBC\n");
1109 static bool g4x_fbc_enabled(struct drm_crtc *crtc)
1111 struct drm_device *dev = crtc->dev;
1112 struct drm_i915_private *dev_priv = dev->dev_private;
1114 return I915_READ(DPFC_CONTROL) & DPFC_CTL_EN;
1118 * intel_update_fbc - enable/disable FBC as needed
1119 * @crtc: CRTC to point the compressor at
1120 * @mode: mode in use
1122 * Set up the framebuffer compression hardware at mode set time. We
1123 * enable it if possible:
1124 * - plane A only (on pre-965)
1125 * - no pixel mulitply/line duplication
1126 * - no alpha buffer discard
1128 * - framebuffer <= 2048 in width, 1536 in height
1130 * We can't assume that any compression will take place (worst case),
1131 * so the compressed buffer has to be the same size as the uncompressed
1132 * one. It also must reside (along with the line length buffer) in
1135 * We need to enable/disable FBC on a global basis.
1137 static void intel_update_fbc(struct drm_crtc *crtc,
1138 struct drm_display_mode *mode)
1140 struct drm_device *dev = crtc->dev;
1141 struct drm_i915_private *dev_priv = dev->dev_private;
1142 struct drm_framebuffer *fb = crtc->fb;
1143 struct intel_framebuffer *intel_fb;
1144 struct drm_i915_gem_object *obj_priv;
1145 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1146 int plane = intel_crtc->plane;
1148 if (!i915_powersave)
1151 if (!dev_priv->display.fbc_enabled ||
1152 !dev_priv->display.enable_fbc ||
1153 !dev_priv->display.disable_fbc)
1159 intel_fb = to_intel_framebuffer(fb);
1160 obj_priv = to_intel_bo(intel_fb->obj);
1163 * If FBC is already on, we just have to verify that we can
1164 * keep it that way...
1165 * Need to disable if:
1166 * - changing FBC params (stride, fence, mode)
1167 * - new fb is too large to fit in compressed buffer
1168 * - going to an unsupported config (interlace, pixel multiply, etc.)
1170 if (intel_fb->obj->size > dev_priv->cfb_size) {
1171 DRM_DEBUG_KMS("framebuffer too large, disabling "
1173 dev_priv->no_fbc_reason = FBC_STOLEN_TOO_SMALL;
1176 if ((mode->flags & DRM_MODE_FLAG_INTERLACE) ||
1177 (mode->flags & DRM_MODE_FLAG_DBLSCAN)) {
1178 DRM_DEBUG_KMS("mode incompatible with compression, "
1180 dev_priv->no_fbc_reason = FBC_UNSUPPORTED_MODE;
1183 if ((mode->hdisplay > 2048) ||
1184 (mode->vdisplay > 1536)) {
1185 DRM_DEBUG_KMS("mode too large for compression, disabling\n");
1186 dev_priv->no_fbc_reason = FBC_MODE_TOO_LARGE;
1189 if ((IS_I915GM(dev) || IS_I945GM(dev)) && plane != 0) {
1190 DRM_DEBUG_KMS("plane not 0, disabling compression\n");
1191 dev_priv->no_fbc_reason = FBC_BAD_PLANE;
1194 if (obj_priv->tiling_mode != I915_TILING_X) {
1195 DRM_DEBUG_KMS("framebuffer not tiled, disabling compression\n");
1196 dev_priv->no_fbc_reason = FBC_NOT_TILED;
1200 if (dev_priv->display.fbc_enabled(crtc)) {
1201 /* We can re-enable it in this case, but need to update pitch */
1202 if (fb->pitch > dev_priv->cfb_pitch)
1203 dev_priv->display.disable_fbc(dev);
1204 if (obj_priv->fence_reg != dev_priv->cfb_fence)
1205 dev_priv->display.disable_fbc(dev);
1206 if (plane != dev_priv->cfb_plane)
1207 dev_priv->display.disable_fbc(dev);
1210 if (!dev_priv->display.fbc_enabled(crtc)) {
1211 /* Now try to turn it back on if possible */
1212 dev_priv->display.enable_fbc(crtc, 500);
1218 DRM_DEBUG_KMS("unsupported config, disabling FBC\n");
1219 /* Multiple disables should be harmless */
1220 if (dev_priv->display.fbc_enabled(crtc))
1221 dev_priv->display.disable_fbc(dev);
1225 intel_pin_and_fence_fb_obj(struct drm_device *dev, struct drm_gem_object *obj)
1227 struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
1231 switch (obj_priv->tiling_mode) {
1232 case I915_TILING_NONE:
1233 alignment = 64 * 1024;
1236 /* pin() will align the object as required by fence */
1240 /* FIXME: Is this true? */
1241 DRM_ERROR("Y tiled not allowed for scan out buffers\n");
1247 ret = i915_gem_object_pin(obj, alignment);
1251 /* Install a fence for tiled scan-out. Pre-i965 always needs a
1252 * fence, whereas 965+ only requires a fence if using
1253 * framebuffer compression. For simplicity, we always install
1254 * a fence as the cost is not that onerous.
1256 if (obj_priv->fence_reg == I915_FENCE_REG_NONE &&
1257 obj_priv->tiling_mode != I915_TILING_NONE) {
1258 ret = i915_gem_object_get_fence_reg(obj);
1260 i915_gem_object_unpin(obj);
1269 intel_pipe_set_base(struct drm_crtc *crtc, int x, int y,
1270 struct drm_framebuffer *old_fb)
1272 struct drm_device *dev = crtc->dev;
1273 struct drm_i915_private *dev_priv = dev->dev_private;
1274 struct drm_i915_master_private *master_priv;
1275 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1276 struct intel_framebuffer *intel_fb;
1277 struct drm_i915_gem_object *obj_priv;
1278 struct drm_gem_object *obj;
1279 int pipe = intel_crtc->pipe;
1280 int plane = intel_crtc->plane;
1281 unsigned long Start, Offset;
1282 int dspbase = (plane == 0 ? DSPAADDR : DSPBADDR);
1283 int dspsurf = (plane == 0 ? DSPASURF : DSPBSURF);
1284 int dspstride = (plane == 0) ? DSPASTRIDE : DSPBSTRIDE;
1285 int dsptileoff = (plane == 0 ? DSPATILEOFF : DSPBTILEOFF);
1286 int dspcntr_reg = (plane == 0) ? DSPACNTR : DSPBCNTR;
1292 DRM_DEBUG_KMS("No FB bound\n");
1301 DRM_ERROR("Can't update plane %d in SAREA\n", plane);
1305 intel_fb = to_intel_framebuffer(crtc->fb);
1306 obj = intel_fb->obj;
1307 obj_priv = to_intel_bo(obj);
1309 mutex_lock(&dev->struct_mutex);
1310 ret = intel_pin_and_fence_fb_obj(dev, obj);
1312 mutex_unlock(&dev->struct_mutex);
1316 ret = i915_gem_object_set_to_display_plane(obj);
1318 i915_gem_object_unpin(obj);
1319 mutex_unlock(&dev->struct_mutex);
1323 dspcntr = I915_READ(dspcntr_reg);
1324 /* Mask out pixel format bits in case we change it */
1325 dspcntr &= ~DISPPLANE_PIXFORMAT_MASK;
1326 switch (crtc->fb->bits_per_pixel) {
1328 dspcntr |= DISPPLANE_8BPP;
1331 if (crtc->fb->depth == 15)
1332 dspcntr |= DISPPLANE_15_16BPP;
1334 dspcntr |= DISPPLANE_16BPP;
1338 if (crtc->fb->depth == 30)
1339 dspcntr |= DISPPLANE_32BPP_30BIT_NO_ALPHA;
1341 dspcntr |= DISPPLANE_32BPP_NO_ALPHA;
1344 DRM_ERROR("Unknown color depth\n");
1345 i915_gem_object_unpin(obj);
1346 mutex_unlock(&dev->struct_mutex);
1349 if (IS_I965G(dev)) {
1350 if (obj_priv->tiling_mode != I915_TILING_NONE)
1351 dspcntr |= DISPPLANE_TILED;
1353 dspcntr &= ~DISPPLANE_TILED;
1356 if (HAS_PCH_SPLIT(dev))
1358 dspcntr |= DISPPLANE_TRICKLE_FEED_DISABLE;
1360 I915_WRITE(dspcntr_reg, dspcntr);
1362 Start = obj_priv->gtt_offset;
1363 Offset = y * crtc->fb->pitch + x * (crtc->fb->bits_per_pixel / 8);
1365 DRM_DEBUG_KMS("Writing base %08lX %08lX %d %d\n", Start, Offset, x, y);
1366 I915_WRITE(dspstride, crtc->fb->pitch);
1367 if (IS_I965G(dev)) {
1368 I915_WRITE(dspbase, Offset);
1370 I915_WRITE(dspsurf, Start);
1372 I915_WRITE(dsptileoff, (y << 16) | x);
1374 I915_WRITE(dspbase, Start + Offset);
1378 if ((IS_I965G(dev) || plane == 0))
1379 intel_update_fbc(crtc, &crtc->mode);
1381 intel_wait_for_vblank(dev);
1384 intel_fb = to_intel_framebuffer(old_fb);
1385 obj_priv = to_intel_bo(intel_fb->obj);
1386 i915_gem_object_unpin(intel_fb->obj);
1388 intel_increase_pllclock(crtc, true);
1390 mutex_unlock(&dev->struct_mutex);
1392 if (!dev->primary->master)
1395 master_priv = dev->primary->master->driver_priv;
1396 if (!master_priv->sarea_priv)
1400 master_priv->sarea_priv->pipeB_x = x;
1401 master_priv->sarea_priv->pipeB_y = y;
1403 master_priv->sarea_priv->pipeA_x = x;
1404 master_priv->sarea_priv->pipeA_y = y;
1410 /* Disable the VGA plane that we never use */
1411 static void i915_disable_vga (struct drm_device *dev)
1413 struct drm_i915_private *dev_priv = dev->dev_private;
1417 if (HAS_PCH_SPLIT(dev))
1418 vga_reg = CPU_VGACNTRL;
1422 if (I915_READ(vga_reg) & VGA_DISP_DISABLE)
1425 I915_WRITE8(VGA_SR_INDEX, 1);
1426 sr1 = I915_READ8(VGA_SR_DATA);
1427 I915_WRITE8(VGA_SR_DATA, sr1 | (1 << 5));
1430 I915_WRITE(vga_reg, VGA_DISP_DISABLE);
1433 static void ironlake_disable_pll_edp (struct drm_crtc *crtc)
1435 struct drm_device *dev = crtc->dev;
1436 struct drm_i915_private *dev_priv = dev->dev_private;
1439 DRM_DEBUG_KMS("\n");
1440 dpa_ctl = I915_READ(DP_A);
1441 dpa_ctl &= ~DP_PLL_ENABLE;
1442 I915_WRITE(DP_A, dpa_ctl);
1445 static void ironlake_enable_pll_edp (struct drm_crtc *crtc)
1447 struct drm_device *dev = crtc->dev;
1448 struct drm_i915_private *dev_priv = dev->dev_private;
1451 dpa_ctl = I915_READ(DP_A);
1452 dpa_ctl |= DP_PLL_ENABLE;
1453 I915_WRITE(DP_A, dpa_ctl);
1458 static void ironlake_set_pll_edp (struct drm_crtc *crtc, int clock)
1460 struct drm_device *dev = crtc->dev;
1461 struct drm_i915_private *dev_priv = dev->dev_private;
1464 DRM_DEBUG_KMS("eDP PLL enable for clock %d\n", clock);
1465 dpa_ctl = I915_READ(DP_A);
1466 dpa_ctl &= ~DP_PLL_FREQ_MASK;
1468 if (clock < 200000) {
1470 dpa_ctl |= DP_PLL_FREQ_160MHZ;
1471 /* workaround for 160Mhz:
1472 1) program 0x4600c bits 15:0 = 0x8124
1473 2) program 0x46010 bit 0 = 1
1474 3) program 0x46034 bit 24 = 1
1475 4) program 0x64000 bit 14 = 1
1477 temp = I915_READ(0x4600c);
1479 I915_WRITE(0x4600c, temp | 0x8124);
1481 temp = I915_READ(0x46010);
1482 I915_WRITE(0x46010, temp | 1);
1484 temp = I915_READ(0x46034);
1485 I915_WRITE(0x46034, temp | (1 << 24));
1487 dpa_ctl |= DP_PLL_FREQ_270MHZ;
1489 I915_WRITE(DP_A, dpa_ctl);
1494 /* The FDI link training functions for ILK/Ibexpeak. */
1495 static void ironlake_fdi_link_train(struct drm_crtc *crtc)
1497 struct drm_device *dev = crtc->dev;
1498 struct drm_i915_private *dev_priv = dev->dev_private;
1499 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1500 int pipe = intel_crtc->pipe;
1501 int fdi_tx_reg = (pipe == 0) ? FDI_TXA_CTL : FDI_TXB_CTL;
1502 int fdi_rx_reg = (pipe == 0) ? FDI_RXA_CTL : FDI_RXB_CTL;
1503 int fdi_rx_iir_reg = (pipe == 0) ? FDI_RXA_IIR : FDI_RXB_IIR;
1504 int fdi_rx_imr_reg = (pipe == 0) ? FDI_RXA_IMR : FDI_RXB_IMR;
1505 u32 temp, tries = 0;
1507 /* enable CPU FDI TX and PCH FDI RX */
1508 temp = I915_READ(fdi_tx_reg);
1509 temp |= FDI_TX_ENABLE;
1510 temp |= FDI_DP_PORT_WIDTH_X4; /* default */
1511 temp &= ~FDI_LINK_TRAIN_NONE;
1512 temp |= FDI_LINK_TRAIN_PATTERN_1;
1513 I915_WRITE(fdi_tx_reg, temp);
1514 I915_READ(fdi_tx_reg);
1516 temp = I915_READ(fdi_rx_reg);
1517 temp &= ~FDI_LINK_TRAIN_NONE;
1518 temp |= FDI_LINK_TRAIN_PATTERN_1;
1519 I915_WRITE(fdi_rx_reg, temp | FDI_RX_ENABLE);
1520 I915_READ(fdi_rx_reg);
1523 /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
1525 temp = I915_READ(fdi_rx_imr_reg);
1526 temp &= ~FDI_RX_SYMBOL_LOCK;
1527 temp &= ~FDI_RX_BIT_LOCK;
1528 I915_WRITE(fdi_rx_imr_reg, temp);
1529 I915_READ(fdi_rx_imr_reg);
1533 temp = I915_READ(fdi_rx_iir_reg);
1534 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
1536 if ((temp & FDI_RX_BIT_LOCK)) {
1537 DRM_DEBUG_KMS("FDI train 1 done.\n");
1538 I915_WRITE(fdi_rx_iir_reg,
1539 temp | FDI_RX_BIT_LOCK);
1546 DRM_DEBUG_KMS("FDI train 1 fail!\n");
1552 temp = I915_READ(fdi_tx_reg);
1553 temp &= ~FDI_LINK_TRAIN_NONE;
1554 temp |= FDI_LINK_TRAIN_PATTERN_2;
1555 I915_WRITE(fdi_tx_reg, temp);
1557 temp = I915_READ(fdi_rx_reg);
1558 temp &= ~FDI_LINK_TRAIN_NONE;
1559 temp |= FDI_LINK_TRAIN_PATTERN_2;
1560 I915_WRITE(fdi_rx_reg, temp);
1566 temp = I915_READ(fdi_rx_iir_reg);
1567 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
1569 if (temp & FDI_RX_SYMBOL_LOCK) {
1570 I915_WRITE(fdi_rx_iir_reg,
1571 temp | FDI_RX_SYMBOL_LOCK);
1572 DRM_DEBUG_KMS("FDI train 2 done.\n");
1579 DRM_DEBUG_KMS("FDI train 2 fail!\n");
1584 DRM_DEBUG_KMS("FDI train done\n");
1587 static int snb_b_fdi_train_param [] = {
1588 FDI_LINK_TRAIN_400MV_0DB_SNB_B,
1589 FDI_LINK_TRAIN_400MV_6DB_SNB_B,
1590 FDI_LINK_TRAIN_600MV_3_5DB_SNB_B,
1591 FDI_LINK_TRAIN_800MV_0DB_SNB_B,
1594 /* The FDI link training functions for SNB/Cougarpoint. */
1595 static void gen6_fdi_link_train(struct drm_crtc *crtc)
1597 struct drm_device *dev = crtc->dev;
1598 struct drm_i915_private *dev_priv = dev->dev_private;
1599 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1600 int pipe = intel_crtc->pipe;
1601 int fdi_tx_reg = (pipe == 0) ? FDI_TXA_CTL : FDI_TXB_CTL;
1602 int fdi_rx_reg = (pipe == 0) ? FDI_RXA_CTL : FDI_RXB_CTL;
1603 int fdi_rx_iir_reg = (pipe == 0) ? FDI_RXA_IIR : FDI_RXB_IIR;
1604 int fdi_rx_imr_reg = (pipe == 0) ? FDI_RXA_IMR : FDI_RXB_IMR;
1607 /* enable CPU FDI TX and PCH FDI RX */
1608 temp = I915_READ(fdi_tx_reg);
1609 temp |= FDI_TX_ENABLE;
1610 temp |= FDI_DP_PORT_WIDTH_X4; /* default */
1611 temp &= ~FDI_LINK_TRAIN_NONE;
1612 temp |= FDI_LINK_TRAIN_PATTERN_1;
1613 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
1615 temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
1616 I915_WRITE(fdi_tx_reg, temp);
1617 I915_READ(fdi_tx_reg);
1619 temp = I915_READ(fdi_rx_reg);
1620 if (HAS_PCH_CPT(dev)) {
1621 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
1622 temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
1624 temp &= ~FDI_LINK_TRAIN_NONE;
1625 temp |= FDI_LINK_TRAIN_PATTERN_1;
1627 I915_WRITE(fdi_rx_reg, temp | FDI_RX_ENABLE);
1628 I915_READ(fdi_rx_reg);
1631 /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
1633 temp = I915_READ(fdi_rx_imr_reg);
1634 temp &= ~FDI_RX_SYMBOL_LOCK;
1635 temp &= ~FDI_RX_BIT_LOCK;
1636 I915_WRITE(fdi_rx_imr_reg, temp);
1637 I915_READ(fdi_rx_imr_reg);
1640 for (i = 0; i < 4; i++ ) {
1641 temp = I915_READ(fdi_tx_reg);
1642 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
1643 temp |= snb_b_fdi_train_param[i];
1644 I915_WRITE(fdi_tx_reg, temp);
1647 temp = I915_READ(fdi_rx_iir_reg);
1648 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
1650 if (temp & FDI_RX_BIT_LOCK) {
1651 I915_WRITE(fdi_rx_iir_reg,
1652 temp | FDI_RX_BIT_LOCK);
1653 DRM_DEBUG_KMS("FDI train 1 done.\n");
1658 DRM_DEBUG_KMS("FDI train 1 fail!\n");
1661 temp = I915_READ(fdi_tx_reg);
1662 temp &= ~FDI_LINK_TRAIN_NONE;
1663 temp |= FDI_LINK_TRAIN_PATTERN_2;
1665 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
1667 temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
1669 I915_WRITE(fdi_tx_reg, temp);
1671 temp = I915_READ(fdi_rx_reg);
1672 if (HAS_PCH_CPT(dev)) {
1673 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
1674 temp |= FDI_LINK_TRAIN_PATTERN_2_CPT;
1676 temp &= ~FDI_LINK_TRAIN_NONE;
1677 temp |= FDI_LINK_TRAIN_PATTERN_2;
1679 I915_WRITE(fdi_rx_reg, temp);
1682 for (i = 0; i < 4; i++ ) {
1683 temp = I915_READ(fdi_tx_reg);
1684 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
1685 temp |= snb_b_fdi_train_param[i];
1686 I915_WRITE(fdi_tx_reg, temp);
1689 temp = I915_READ(fdi_rx_iir_reg);
1690 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
1692 if (temp & FDI_RX_SYMBOL_LOCK) {
1693 I915_WRITE(fdi_rx_iir_reg,
1694 temp | FDI_RX_SYMBOL_LOCK);
1695 DRM_DEBUG_KMS("FDI train 2 done.\n");
1700 DRM_DEBUG_KMS("FDI train 2 fail!\n");
1702 DRM_DEBUG_KMS("FDI train done.\n");
1705 static void ironlake_crtc_dpms(struct drm_crtc *crtc, int mode)
1707 struct drm_device *dev = crtc->dev;
1708 struct drm_i915_private *dev_priv = dev->dev_private;
1709 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1710 int pipe = intel_crtc->pipe;
1711 int plane = intel_crtc->plane;
1712 int pch_dpll_reg = (pipe == 0) ? PCH_DPLL_A : PCH_DPLL_B;
1713 int pipeconf_reg = (pipe == 0) ? PIPEACONF : PIPEBCONF;
1714 int dspcntr_reg = (plane == 0) ? DSPACNTR : DSPBCNTR;
1715 int dspbase_reg = (plane == 0) ? DSPAADDR : DSPBADDR;
1716 int fdi_tx_reg = (pipe == 0) ? FDI_TXA_CTL : FDI_TXB_CTL;
1717 int fdi_rx_reg = (pipe == 0) ? FDI_RXA_CTL : FDI_RXB_CTL;
1718 int transconf_reg = (pipe == 0) ? TRANSACONF : TRANSBCONF;
1719 int pf_ctl_reg = (pipe == 0) ? PFA_CTL_1 : PFB_CTL_1;
1720 int pf_win_size = (pipe == 0) ? PFA_WIN_SZ : PFB_WIN_SZ;
1721 int pf_win_pos = (pipe == 0) ? PFA_WIN_POS : PFB_WIN_POS;
1722 int cpu_htot_reg = (pipe == 0) ? HTOTAL_A : HTOTAL_B;
1723 int cpu_hblank_reg = (pipe == 0) ? HBLANK_A : HBLANK_B;
1724 int cpu_hsync_reg = (pipe == 0) ? HSYNC_A : HSYNC_B;
1725 int cpu_vtot_reg = (pipe == 0) ? VTOTAL_A : VTOTAL_B;
1726 int cpu_vblank_reg = (pipe == 0) ? VBLANK_A : VBLANK_B;
1727 int cpu_vsync_reg = (pipe == 0) ? VSYNC_A : VSYNC_B;
1728 int trans_htot_reg = (pipe == 0) ? TRANS_HTOTAL_A : TRANS_HTOTAL_B;
1729 int trans_hblank_reg = (pipe == 0) ? TRANS_HBLANK_A : TRANS_HBLANK_B;
1730 int trans_hsync_reg = (pipe == 0) ? TRANS_HSYNC_A : TRANS_HSYNC_B;
1731 int trans_vtot_reg = (pipe == 0) ? TRANS_VTOTAL_A : TRANS_VTOTAL_B;
1732 int trans_vblank_reg = (pipe == 0) ? TRANS_VBLANK_A : TRANS_VBLANK_B;
1733 int trans_vsync_reg = (pipe == 0) ? TRANS_VSYNC_A : TRANS_VSYNC_B;
1734 int trans_dpll_sel = (pipe == 0) ? 0 : 1;
1739 temp = I915_READ(pipeconf_reg);
1740 pipe_bpc = temp & PIPE_BPC_MASK;
1742 /* XXX: When our outputs are all unaware of DPMS modes other than off
1743 * and on, we should map those modes to DRM_MODE_DPMS_OFF in the CRTC.
1746 case DRM_MODE_DPMS_ON:
1747 case DRM_MODE_DPMS_STANDBY:
1748 case DRM_MODE_DPMS_SUSPEND:
1749 DRM_DEBUG_KMS("crtc %d dpms on\n", pipe);
1751 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
1752 temp = I915_READ(PCH_LVDS);
1753 if ((temp & LVDS_PORT_EN) == 0) {
1754 I915_WRITE(PCH_LVDS, temp | LVDS_PORT_EN);
1755 POSTING_READ(PCH_LVDS);
1760 /* enable eDP PLL */
1761 ironlake_enable_pll_edp(crtc);
1764 /* enable PCH FDI RX PLL, wait warmup plus DMI latency */
1765 temp = I915_READ(fdi_rx_reg);
1767 * make the BPC in FDI Rx be consistent with that in
1770 temp &= ~(0x7 << 16);
1771 temp |= (pipe_bpc << 11);
1772 I915_WRITE(fdi_rx_reg, temp | FDI_RX_PLL_ENABLE |
1773 FDI_DP_PORT_WIDTH_X4); /* default 4 lanes */
1774 I915_READ(fdi_rx_reg);
1777 /* Switch from Rawclk to PCDclk */
1778 temp = I915_READ(fdi_rx_reg);
1779 I915_WRITE(fdi_rx_reg, temp | FDI_SEL_PCDCLK);
1780 I915_READ(fdi_rx_reg);
1783 /* Enable CPU FDI TX PLL, always on for Ironlake */
1784 temp = I915_READ(fdi_tx_reg);
1785 if ((temp & FDI_TX_PLL_ENABLE) == 0) {
1786 I915_WRITE(fdi_tx_reg, temp | FDI_TX_PLL_ENABLE);
1787 I915_READ(fdi_tx_reg);
1792 /* Enable panel fitting for LVDS */
1793 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
1794 temp = I915_READ(pf_ctl_reg);
1795 I915_WRITE(pf_ctl_reg, temp | PF_ENABLE | PF_FILTER_MED_3x3);
1797 /* currently full aspect */
1798 I915_WRITE(pf_win_pos, 0);
1800 I915_WRITE(pf_win_size,
1801 (dev_priv->panel_fixed_mode->hdisplay << 16) |
1802 (dev_priv->panel_fixed_mode->vdisplay));
1805 /* Enable CPU pipe */
1806 temp = I915_READ(pipeconf_reg);
1807 if ((temp & PIPEACONF_ENABLE) == 0) {
1808 I915_WRITE(pipeconf_reg, temp | PIPEACONF_ENABLE);
1809 I915_READ(pipeconf_reg);
1813 /* configure and enable CPU plane */
1814 temp = I915_READ(dspcntr_reg);
1815 if ((temp & DISPLAY_PLANE_ENABLE) == 0) {
1816 I915_WRITE(dspcntr_reg, temp | DISPLAY_PLANE_ENABLE);
1817 /* Flush the plane changes */
1818 I915_WRITE(dspbase_reg, I915_READ(dspbase_reg));
1822 /* For PCH output, training FDI link */
1824 gen6_fdi_link_train(crtc);
1826 ironlake_fdi_link_train(crtc);
1828 /* enable PCH DPLL */
1829 temp = I915_READ(pch_dpll_reg);
1830 if ((temp & DPLL_VCO_ENABLE) == 0) {
1831 I915_WRITE(pch_dpll_reg, temp | DPLL_VCO_ENABLE);
1832 I915_READ(pch_dpll_reg);
1836 if (HAS_PCH_CPT(dev)) {
1837 /* Be sure PCH DPLL SEL is set */
1838 temp = I915_READ(PCH_DPLL_SEL);
1839 if (trans_dpll_sel == 0 &&
1840 (temp & TRANSA_DPLL_ENABLE) == 0)
1841 temp |= (TRANSA_DPLL_ENABLE | TRANSA_DPLLA_SEL);
1842 else if (trans_dpll_sel == 1 &&
1843 (temp & TRANSB_DPLL_ENABLE) == 0)
1844 temp |= (TRANSB_DPLL_ENABLE | TRANSB_DPLLB_SEL);
1845 I915_WRITE(PCH_DPLL_SEL, temp);
1846 I915_READ(PCH_DPLL_SEL);
1849 /* set transcoder timing */
1850 I915_WRITE(trans_htot_reg, I915_READ(cpu_htot_reg));
1851 I915_WRITE(trans_hblank_reg, I915_READ(cpu_hblank_reg));
1852 I915_WRITE(trans_hsync_reg, I915_READ(cpu_hsync_reg));
1854 I915_WRITE(trans_vtot_reg, I915_READ(cpu_vtot_reg));
1855 I915_WRITE(trans_vblank_reg, I915_READ(cpu_vblank_reg));
1856 I915_WRITE(trans_vsync_reg, I915_READ(cpu_vsync_reg));
1858 /* enable normal train */
1859 temp = I915_READ(fdi_tx_reg);
1860 temp &= ~FDI_LINK_TRAIN_NONE;
1861 I915_WRITE(fdi_tx_reg, temp | FDI_LINK_TRAIN_NONE |
1862 FDI_TX_ENHANCE_FRAME_ENABLE);
1863 I915_READ(fdi_tx_reg);
1865 temp = I915_READ(fdi_rx_reg);
1866 if (HAS_PCH_CPT(dev)) {
1867 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
1868 temp |= FDI_LINK_TRAIN_NORMAL_CPT;
1870 temp &= ~FDI_LINK_TRAIN_NONE;
1871 temp |= FDI_LINK_TRAIN_NONE;
1873 I915_WRITE(fdi_rx_reg, temp | FDI_RX_ENHANCE_FRAME_ENABLE);
1874 I915_READ(fdi_rx_reg);
1876 /* wait one idle pattern time */
1879 /* For PCH DP, enable TRANS_DP_CTL */
1880 if (HAS_PCH_CPT(dev) &&
1881 intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT)) {
1882 int trans_dp_ctl = (pipe == 0) ? TRANS_DP_CTL_A : TRANS_DP_CTL_B;
1885 reg = I915_READ(trans_dp_ctl);
1886 reg &= ~TRANS_DP_PORT_SEL_MASK;
1887 reg = TRANS_DP_OUTPUT_ENABLE |
1888 TRANS_DP_ENH_FRAMING |
1889 TRANS_DP_VSYNC_ACTIVE_HIGH |
1890 TRANS_DP_HSYNC_ACTIVE_HIGH;
1892 switch (intel_trans_dp_port_sel(crtc)) {
1894 reg |= TRANS_DP_PORT_SEL_B;
1897 reg |= TRANS_DP_PORT_SEL_C;
1900 reg |= TRANS_DP_PORT_SEL_D;
1903 DRM_DEBUG_KMS("Wrong PCH DP port return. Guess port B\n");
1904 reg |= TRANS_DP_PORT_SEL_B;
1908 I915_WRITE(trans_dp_ctl, reg);
1909 POSTING_READ(trans_dp_ctl);
1912 /* enable PCH transcoder */
1913 temp = I915_READ(transconf_reg);
1915 * make the BPC in transcoder be consistent with
1916 * that in pipeconf reg.
1918 temp &= ~PIPE_BPC_MASK;
1920 I915_WRITE(transconf_reg, temp | TRANS_ENABLE);
1921 I915_READ(transconf_reg);
1923 while ((I915_READ(transconf_reg) & TRANS_STATE_ENABLE) == 0)
1928 intel_crtc_load_lut(crtc);
1931 case DRM_MODE_DPMS_OFF:
1932 DRM_DEBUG_KMS("crtc %d dpms off\n", pipe);
1934 drm_vblank_off(dev, pipe);
1935 /* Disable display plane */
1936 temp = I915_READ(dspcntr_reg);
1937 if ((temp & DISPLAY_PLANE_ENABLE) != 0) {
1938 I915_WRITE(dspcntr_reg, temp & ~DISPLAY_PLANE_ENABLE);
1939 /* Flush the plane changes */
1940 I915_WRITE(dspbase_reg, I915_READ(dspbase_reg));
1941 I915_READ(dspbase_reg);
1944 i915_disable_vga(dev);
1946 /* disable cpu pipe, disable after all planes disabled */
1947 temp = I915_READ(pipeconf_reg);
1948 if ((temp & PIPEACONF_ENABLE) != 0) {
1949 I915_WRITE(pipeconf_reg, temp & ~PIPEACONF_ENABLE);
1950 I915_READ(pipeconf_reg);
1952 /* wait for cpu pipe off, pipe state */
1953 while ((I915_READ(pipeconf_reg) & I965_PIPECONF_ACTIVE) != 0) {
1959 DRM_DEBUG_KMS("pipe %d off delay\n",
1965 DRM_DEBUG_KMS("crtc %d is disabled\n", pipe);
1970 temp = I915_READ(pf_ctl_reg);
1971 if ((temp & PF_ENABLE) != 0) {
1972 I915_WRITE(pf_ctl_reg, temp & ~PF_ENABLE);
1973 I915_READ(pf_ctl_reg);
1975 I915_WRITE(pf_win_size, 0);
1976 POSTING_READ(pf_win_size);
1979 /* disable CPU FDI tx and PCH FDI rx */
1980 temp = I915_READ(fdi_tx_reg);
1981 I915_WRITE(fdi_tx_reg, temp & ~FDI_TX_ENABLE);
1982 I915_READ(fdi_tx_reg);
1984 temp = I915_READ(fdi_rx_reg);
1985 /* BPC in FDI rx is consistent with that in pipeconf */
1986 temp &= ~(0x07 << 16);
1987 temp |= (pipe_bpc << 11);
1988 I915_WRITE(fdi_rx_reg, temp & ~FDI_RX_ENABLE);
1989 I915_READ(fdi_rx_reg);
1993 /* still set train pattern 1 */
1994 temp = I915_READ(fdi_tx_reg);
1995 temp &= ~FDI_LINK_TRAIN_NONE;
1996 temp |= FDI_LINK_TRAIN_PATTERN_1;
1997 I915_WRITE(fdi_tx_reg, temp);
1998 POSTING_READ(fdi_tx_reg);
2000 temp = I915_READ(fdi_rx_reg);
2001 if (HAS_PCH_CPT(dev)) {
2002 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
2003 temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
2005 temp &= ~FDI_LINK_TRAIN_NONE;
2006 temp |= FDI_LINK_TRAIN_PATTERN_1;
2008 I915_WRITE(fdi_rx_reg, temp);
2009 POSTING_READ(fdi_rx_reg);
2013 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
2014 temp = I915_READ(PCH_LVDS);
2015 I915_WRITE(PCH_LVDS, temp & ~LVDS_PORT_EN);
2016 I915_READ(PCH_LVDS);
2020 /* disable PCH transcoder */
2021 temp = I915_READ(transconf_reg);
2022 if ((temp & TRANS_ENABLE) != 0) {
2023 I915_WRITE(transconf_reg, temp & ~TRANS_ENABLE);
2024 I915_READ(transconf_reg);
2026 /* wait for PCH transcoder off, transcoder state */
2027 while ((I915_READ(transconf_reg) & TRANS_STATE_ENABLE) != 0) {
2033 DRM_DEBUG_KMS("transcoder %d off "
2040 temp = I915_READ(transconf_reg);
2041 /* BPC in transcoder is consistent with that in pipeconf */
2042 temp &= ~PIPE_BPC_MASK;
2044 I915_WRITE(transconf_reg, temp);
2045 I915_READ(transconf_reg);
2048 if (HAS_PCH_CPT(dev)) {
2049 /* disable TRANS_DP_CTL */
2050 int trans_dp_ctl = (pipe == 0) ? TRANS_DP_CTL_A : TRANS_DP_CTL_B;
2053 reg = I915_READ(trans_dp_ctl);
2054 reg &= ~(TRANS_DP_OUTPUT_ENABLE | TRANS_DP_PORT_SEL_MASK);
2055 I915_WRITE(trans_dp_ctl, reg);
2056 POSTING_READ(trans_dp_ctl);
2058 /* disable DPLL_SEL */
2059 temp = I915_READ(PCH_DPLL_SEL);
2060 if (trans_dpll_sel == 0)
2061 temp &= ~(TRANSA_DPLL_ENABLE | TRANSA_DPLLB_SEL);
2063 temp &= ~(TRANSB_DPLL_ENABLE | TRANSB_DPLLB_SEL);
2064 I915_WRITE(PCH_DPLL_SEL, temp);
2065 I915_READ(PCH_DPLL_SEL);
2069 /* disable PCH DPLL */
2070 temp = I915_READ(pch_dpll_reg);
2071 I915_WRITE(pch_dpll_reg, temp & ~DPLL_VCO_ENABLE);
2072 I915_READ(pch_dpll_reg);
2075 ironlake_disable_pll_edp(crtc);
2078 /* Switch from PCDclk to Rawclk */
2079 temp = I915_READ(fdi_rx_reg);
2080 temp &= ~FDI_SEL_PCDCLK;
2081 I915_WRITE(fdi_rx_reg, temp);
2082 I915_READ(fdi_rx_reg);
2084 /* Disable CPU FDI TX PLL */
2085 temp = I915_READ(fdi_tx_reg);
2086 I915_WRITE(fdi_tx_reg, temp & ~FDI_TX_PLL_ENABLE);
2087 I915_READ(fdi_tx_reg);
2090 temp = I915_READ(fdi_rx_reg);
2091 temp &= ~FDI_RX_PLL_ENABLE;
2092 I915_WRITE(fdi_rx_reg, temp);
2093 I915_READ(fdi_rx_reg);
2095 /* Wait for the clocks to turn off. */
2101 static void intel_crtc_dpms_overlay(struct intel_crtc *intel_crtc, bool enable)
2103 struct intel_overlay *overlay;
2106 if (!enable && intel_crtc->overlay) {
2107 overlay = intel_crtc->overlay;
2108 mutex_lock(&overlay->dev->struct_mutex);
2110 ret = intel_overlay_switch_off(overlay);
2114 ret = intel_overlay_recover_from_interrupt(overlay, 0);
2116 /* overlay doesn't react anymore. Usually
2117 * results in a black screen and an unkillable
2120 overlay->hw_wedged = HW_WEDGED;
2124 mutex_unlock(&overlay->dev->struct_mutex);
2126 /* Let userspace switch the overlay on again. In most cases userspace
2127 * has to recompute where to put it anyway. */
2132 static void i9xx_crtc_dpms(struct drm_crtc *crtc, int mode)
2134 struct drm_device *dev = crtc->dev;
2135 struct drm_i915_private *dev_priv = dev->dev_private;
2136 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2137 int pipe = intel_crtc->pipe;
2138 int plane = intel_crtc->plane;
2139 int dpll_reg = (pipe == 0) ? DPLL_A : DPLL_B;
2140 int dspcntr_reg = (plane == 0) ? DSPACNTR : DSPBCNTR;
2141 int dspbase_reg = (plane == 0) ? DSPAADDR : DSPBADDR;
2142 int pipeconf_reg = (pipe == 0) ? PIPEACONF : PIPEBCONF;
2145 /* XXX: When our outputs are all unaware of DPMS modes other than off
2146 * and on, we should map those modes to DRM_MODE_DPMS_OFF in the CRTC.
2149 case DRM_MODE_DPMS_ON:
2150 case DRM_MODE_DPMS_STANDBY:
2151 case DRM_MODE_DPMS_SUSPEND:
2152 intel_update_watermarks(dev);
2154 /* Enable the DPLL */
2155 temp = I915_READ(dpll_reg);
2156 if ((temp & DPLL_VCO_ENABLE) == 0) {
2157 I915_WRITE(dpll_reg, temp);
2158 I915_READ(dpll_reg);
2159 /* Wait for the clocks to stabilize. */
2161 I915_WRITE(dpll_reg, temp | DPLL_VCO_ENABLE);
2162 I915_READ(dpll_reg);
2163 /* Wait for the clocks to stabilize. */
2165 I915_WRITE(dpll_reg, temp | DPLL_VCO_ENABLE);
2166 I915_READ(dpll_reg);
2167 /* Wait for the clocks to stabilize. */
2171 /* Enable the pipe */
2172 temp = I915_READ(pipeconf_reg);
2173 if ((temp & PIPEACONF_ENABLE) == 0)
2174 I915_WRITE(pipeconf_reg, temp | PIPEACONF_ENABLE);
2176 /* Enable the plane */
2177 temp = I915_READ(dspcntr_reg);
2178 if ((temp & DISPLAY_PLANE_ENABLE) == 0) {
2179 I915_WRITE(dspcntr_reg, temp | DISPLAY_PLANE_ENABLE);
2180 /* Flush the plane changes */
2181 I915_WRITE(dspbase_reg, I915_READ(dspbase_reg));
2184 intel_crtc_load_lut(crtc);
2186 if ((IS_I965G(dev) || plane == 0))
2187 intel_update_fbc(crtc, &crtc->mode);
2189 /* Give the overlay scaler a chance to enable if it's on this pipe */
2190 intel_crtc_dpms_overlay(intel_crtc, true);
2192 case DRM_MODE_DPMS_OFF:
2193 intel_update_watermarks(dev);
2195 /* Give the overlay scaler a chance to disable if it's on this pipe */
2196 intel_crtc_dpms_overlay(intel_crtc, false);
2197 drm_vblank_off(dev, pipe);
2199 if (dev_priv->cfb_plane == plane &&
2200 dev_priv->display.disable_fbc)
2201 dev_priv->display.disable_fbc(dev);
2203 /* Disable the VGA plane that we never use */
2204 i915_disable_vga(dev);
2206 /* Disable display plane */
2207 temp = I915_READ(dspcntr_reg);
2208 if ((temp & DISPLAY_PLANE_ENABLE) != 0) {
2209 I915_WRITE(dspcntr_reg, temp & ~DISPLAY_PLANE_ENABLE);
2210 /* Flush the plane changes */
2211 I915_WRITE(dspbase_reg, I915_READ(dspbase_reg));
2212 I915_READ(dspbase_reg);
2215 if (!IS_I9XX(dev)) {
2216 /* Wait for vblank for the disable to take effect */
2217 intel_wait_for_vblank(dev);
2220 /* Next, disable display pipes */
2221 temp = I915_READ(pipeconf_reg);
2222 if ((temp & PIPEACONF_ENABLE) != 0) {
2223 I915_WRITE(pipeconf_reg, temp & ~PIPEACONF_ENABLE);
2224 I915_READ(pipeconf_reg);
2227 /* Wait for vblank for the disable to take effect. */
2228 intel_wait_for_vblank(dev);
2230 temp = I915_READ(dpll_reg);
2231 if ((temp & DPLL_VCO_ENABLE) != 0) {
2232 I915_WRITE(dpll_reg, temp & ~DPLL_VCO_ENABLE);
2233 I915_READ(dpll_reg);
2236 /* Wait for the clocks to turn off. */
2243 * Sets the power management mode of the pipe and plane.
2245 * This code should probably grow support for turning the cursor off and back
2246 * on appropriately at the same time as we're turning the pipe off/on.
2248 static void intel_crtc_dpms(struct drm_crtc *crtc, int mode)
2250 struct drm_device *dev = crtc->dev;
2251 struct drm_i915_private *dev_priv = dev->dev_private;
2252 struct drm_i915_master_private *master_priv;
2253 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2254 int pipe = intel_crtc->pipe;
2257 dev_priv->display.dpms(crtc, mode);
2259 intel_crtc->dpms_mode = mode;
2261 if (!dev->primary->master)
2264 master_priv = dev->primary->master->driver_priv;
2265 if (!master_priv->sarea_priv)
2268 enabled = crtc->enabled && mode != DRM_MODE_DPMS_OFF;
2272 master_priv->sarea_priv->pipeA_w = enabled ? crtc->mode.hdisplay : 0;
2273 master_priv->sarea_priv->pipeA_h = enabled ? crtc->mode.vdisplay : 0;
2276 master_priv->sarea_priv->pipeB_w = enabled ? crtc->mode.hdisplay : 0;
2277 master_priv->sarea_priv->pipeB_h = enabled ? crtc->mode.vdisplay : 0;
2280 DRM_ERROR("Can't update pipe %d in SAREA\n", pipe);
2285 static void intel_crtc_prepare (struct drm_crtc *crtc)
2287 struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
2288 crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF);
2291 static void intel_crtc_commit (struct drm_crtc *crtc)
2293 struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
2294 crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON);
2297 void intel_encoder_prepare (struct drm_encoder *encoder)
2299 struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
2300 /* lvds has its own version of prepare see intel_lvds_prepare */
2301 encoder_funcs->dpms(encoder, DRM_MODE_DPMS_OFF);
2304 void intel_encoder_commit (struct drm_encoder *encoder)
2306 struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
2307 /* lvds has its own version of commit see intel_lvds_commit */
2308 encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON);
2311 static bool intel_crtc_mode_fixup(struct drm_crtc *crtc,
2312 struct drm_display_mode *mode,
2313 struct drm_display_mode *adjusted_mode)
2315 struct drm_device *dev = crtc->dev;
2316 if (HAS_PCH_SPLIT(dev)) {
2317 /* FDI link clock is fixed at 2.7G */
2318 if (mode->clock * 3 > 27000 * 4)
2319 return MODE_CLOCK_HIGH;
2324 static int i945_get_display_clock_speed(struct drm_device *dev)
2329 static int i915_get_display_clock_speed(struct drm_device *dev)
2334 static int i9xx_misc_get_display_clock_speed(struct drm_device *dev)
2339 static int i915gm_get_display_clock_speed(struct drm_device *dev)
2343 pci_read_config_word(dev->pdev, GCFGC, &gcfgc);
2345 if (gcfgc & GC_LOW_FREQUENCY_ENABLE)
2348 switch (gcfgc & GC_DISPLAY_CLOCK_MASK) {
2349 case GC_DISPLAY_CLOCK_333_MHZ:
2352 case GC_DISPLAY_CLOCK_190_200_MHZ:
2358 static int i865_get_display_clock_speed(struct drm_device *dev)
2363 static int i855_get_display_clock_speed(struct drm_device *dev)
2366 /* Assume that the hardware is in the high speed state. This
2367 * should be the default.
2369 switch (hpllcc & GC_CLOCK_CONTROL_MASK) {
2370 case GC_CLOCK_133_200:
2371 case GC_CLOCK_100_200:
2373 case GC_CLOCK_166_250:
2375 case GC_CLOCK_100_133:
2379 /* Shouldn't happen */
2383 static int i830_get_display_clock_speed(struct drm_device *dev)
2389 * Return the pipe currently connected to the panel fitter,
2390 * or -1 if the panel fitter is not present or not in use
2392 int intel_panel_fitter_pipe (struct drm_device *dev)
2394 struct drm_i915_private *dev_priv = dev->dev_private;
2397 /* i830 doesn't have a panel fitter */
2401 pfit_control = I915_READ(PFIT_CONTROL);
2403 /* See if the panel fitter is in use */
2404 if ((pfit_control & PFIT_ENABLE) == 0)
2407 /* 965 can place panel fitter on either pipe */
2409 return (pfit_control >> 29) & 0x3;
2411 /* older chips can only use pipe 1 */
2424 fdi_reduce_ratio(u32 *num, u32 *den)
2426 while (*num > 0xffffff || *den > 0xffffff) {
2432 #define DATA_N 0x800000
2433 #define LINK_N 0x80000
2436 ironlake_compute_m_n(int bits_per_pixel, int nlanes, int pixel_clock,
2437 int link_clock, struct fdi_m_n *m_n)
2441 m_n->tu = 64; /* default size */
2443 temp = (u64) DATA_N * pixel_clock;
2444 temp = div_u64(temp, link_clock);
2445 m_n->gmch_m = div_u64(temp * bits_per_pixel, nlanes);
2446 m_n->gmch_m >>= 3; /* convert to bytes_per_pixel */
2447 m_n->gmch_n = DATA_N;
2448 fdi_reduce_ratio(&m_n->gmch_m, &m_n->gmch_n);
2450 temp = (u64) LINK_N * pixel_clock;
2451 m_n->link_m = div_u64(temp, link_clock);
2452 m_n->link_n = LINK_N;
2453 fdi_reduce_ratio(&m_n->link_m, &m_n->link_n);
2457 struct intel_watermark_params {
2458 unsigned long fifo_size;
2459 unsigned long max_wm;
2460 unsigned long default_wm;
2461 unsigned long guard_size;
2462 unsigned long cacheline_size;
2465 /* Pineview has different values for various configs */
2466 static struct intel_watermark_params pineview_display_wm = {
2467 PINEVIEW_DISPLAY_FIFO,
2471 PINEVIEW_FIFO_LINE_SIZE
2473 static struct intel_watermark_params pineview_display_hplloff_wm = {
2474 PINEVIEW_DISPLAY_FIFO,
2476 PINEVIEW_DFT_HPLLOFF_WM,
2478 PINEVIEW_FIFO_LINE_SIZE
2480 static struct intel_watermark_params pineview_cursor_wm = {
2481 PINEVIEW_CURSOR_FIFO,
2482 PINEVIEW_CURSOR_MAX_WM,
2483 PINEVIEW_CURSOR_DFT_WM,
2484 PINEVIEW_CURSOR_GUARD_WM,
2485 PINEVIEW_FIFO_LINE_SIZE,
2487 static struct intel_watermark_params pineview_cursor_hplloff_wm = {
2488 PINEVIEW_CURSOR_FIFO,
2489 PINEVIEW_CURSOR_MAX_WM,
2490 PINEVIEW_CURSOR_DFT_WM,
2491 PINEVIEW_CURSOR_GUARD_WM,
2492 PINEVIEW_FIFO_LINE_SIZE
2494 static struct intel_watermark_params g4x_wm_info = {
2501 static struct intel_watermark_params i945_wm_info = {
2508 static struct intel_watermark_params i915_wm_info = {
2515 static struct intel_watermark_params i855_wm_info = {
2522 static struct intel_watermark_params i830_wm_info = {
2531 * intel_calculate_wm - calculate watermark level
2532 * @clock_in_khz: pixel clock
2533 * @wm: chip FIFO params
2534 * @pixel_size: display pixel size
2535 * @latency_ns: memory latency for the platform
2537 * Calculate the watermark level (the level at which the display plane will
2538 * start fetching from memory again). Each chip has a different display
2539 * FIFO size and allocation, so the caller needs to figure that out and pass
2540 * in the correct intel_watermark_params structure.
2542 * As the pixel clock runs, the FIFO will be drained at a rate that depends
2543 * on the pixel size. When it reaches the watermark level, it'll start
2544 * fetching FIFO line sized based chunks from memory until the FIFO fills
2545 * past the watermark point. If the FIFO drains completely, a FIFO underrun
2546 * will occur, and a display engine hang could result.
2548 static unsigned long intel_calculate_wm(unsigned long clock_in_khz,
2549 struct intel_watermark_params *wm,
2551 unsigned long latency_ns)
2553 long entries_required, wm_size;
2556 * Note: we need to make sure we don't overflow for various clock &
2558 * clocks go from a few thousand to several hundred thousand.
2559 * latency is usually a few thousand
2561 entries_required = ((clock_in_khz / 1000) * pixel_size * latency_ns) /
2563 entries_required /= wm->cacheline_size;
2565 DRM_DEBUG_KMS("FIFO entries required for mode: %d\n", entries_required);
2567 wm_size = wm->fifo_size - (entries_required + wm->guard_size);
2569 DRM_DEBUG_KMS("FIFO watermark level: %d\n", wm_size);
2571 /* Don't promote wm_size to unsigned... */
2572 if (wm_size > (long)wm->max_wm)
2573 wm_size = wm->max_wm;
2575 wm_size = wm->default_wm;
2579 struct cxsr_latency {
2581 unsigned long fsb_freq;
2582 unsigned long mem_freq;
2583 unsigned long display_sr;
2584 unsigned long display_hpll_disable;
2585 unsigned long cursor_sr;
2586 unsigned long cursor_hpll_disable;
2589 static struct cxsr_latency cxsr_latency_table[] = {
2590 {1, 800, 400, 3382, 33382, 3983, 33983}, /* DDR2-400 SC */
2591 {1, 800, 667, 3354, 33354, 3807, 33807}, /* DDR2-667 SC */
2592 {1, 800, 800, 3347, 33347, 3763, 33763}, /* DDR2-800 SC */
2594 {1, 667, 400, 3400, 33400, 4021, 34021}, /* DDR2-400 SC */
2595 {1, 667, 667, 3372, 33372, 3845, 33845}, /* DDR2-667 SC */
2596 {1, 667, 800, 3386, 33386, 3822, 33822}, /* DDR2-800 SC */
2598 {1, 400, 400, 3472, 33472, 4173, 34173}, /* DDR2-400 SC */
2599 {1, 400, 667, 3443, 33443, 3996, 33996}, /* DDR2-667 SC */
2600 {1, 400, 800, 3430, 33430, 3946, 33946}, /* DDR2-800 SC */
2602 {0, 800, 400, 3438, 33438, 4065, 34065}, /* DDR2-400 SC */
2603 {0, 800, 667, 3410, 33410, 3889, 33889}, /* DDR2-667 SC */
2604 {0, 800, 800, 3403, 33403, 3845, 33845}, /* DDR2-800 SC */
2606 {0, 667, 400, 3456, 33456, 4103, 34106}, /* DDR2-400 SC */
2607 {0, 667, 667, 3428, 33428, 3927, 33927}, /* DDR2-667 SC */
2608 {0, 667, 800, 3443, 33443, 3905, 33905}, /* DDR2-800 SC */
2610 {0, 400, 400, 3528, 33528, 4255, 34255}, /* DDR2-400 SC */
2611 {0, 400, 667, 3500, 33500, 4079, 34079}, /* DDR2-667 SC */
2612 {0, 400, 800, 3487, 33487, 4029, 34029}, /* DDR2-800 SC */
2615 static struct cxsr_latency *intel_get_cxsr_latency(int is_desktop, int fsb,
2619 struct cxsr_latency *latency;
2621 if (fsb == 0 || mem == 0)
2624 for (i = 0; i < ARRAY_SIZE(cxsr_latency_table); i++) {
2625 latency = &cxsr_latency_table[i];
2626 if (is_desktop == latency->is_desktop &&
2627 fsb == latency->fsb_freq && mem == latency->mem_freq)
2631 DRM_DEBUG_KMS("Unknown FSB/MEM found, disable CxSR\n");
2636 static void pineview_disable_cxsr(struct drm_device *dev)
2638 struct drm_i915_private *dev_priv = dev->dev_private;
2641 /* deactivate cxsr */
2642 reg = I915_READ(DSPFW3);
2643 reg &= ~(PINEVIEW_SELF_REFRESH_EN);
2644 I915_WRITE(DSPFW3, reg);
2645 DRM_INFO("Big FIFO is disabled\n");
2649 * Latency for FIFO fetches is dependent on several factors:
2650 * - memory configuration (speed, channels)
2652 * - current MCH state
2653 * It can be fairly high in some situations, so here we assume a fairly
2654 * pessimal value. It's a tradeoff between extra memory fetches (if we
2655 * set this value too high, the FIFO will fetch frequently to stay full)
2656 * and power consumption (set it too low to save power and we might see
2657 * FIFO underruns and display "flicker").
2659 * A value of 5us seems to be a good balance; safe for very low end
2660 * platforms but not overly aggressive on lower latency configs.
2662 static const int latency_ns = 5000;
2664 static int i9xx_get_fifo_size(struct drm_device *dev, int plane)
2666 struct drm_i915_private *dev_priv = dev->dev_private;
2667 uint32_t dsparb = I915_READ(DSPARB);
2671 size = dsparb & 0x7f;
2673 size = ((dsparb >> DSPARB_CSTART_SHIFT) & 0x7f) -
2676 DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb,
2677 plane ? "B" : "A", size);
2682 static int i85x_get_fifo_size(struct drm_device *dev, int plane)
2684 struct drm_i915_private *dev_priv = dev->dev_private;
2685 uint32_t dsparb = I915_READ(DSPARB);
2689 size = dsparb & 0x1ff;
2691 size = ((dsparb >> DSPARB_BEND_SHIFT) & 0x1ff) -
2693 size >>= 1; /* Convert to cachelines */
2695 DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb,
2696 plane ? "B" : "A", size);
2701 static int i845_get_fifo_size(struct drm_device *dev, int plane)
2703 struct drm_i915_private *dev_priv = dev->dev_private;
2704 uint32_t dsparb = I915_READ(DSPARB);
2707 size = dsparb & 0x7f;
2708 size >>= 2; /* Convert to cachelines */
2710 DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb,
2717 static int i830_get_fifo_size(struct drm_device *dev, int plane)
2719 struct drm_i915_private *dev_priv = dev->dev_private;
2720 uint32_t dsparb = I915_READ(DSPARB);
2723 size = dsparb & 0x7f;
2724 size >>= 1; /* Convert to cachelines */
2726 DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb,
2727 plane ? "B" : "A", size);
2732 static void pineview_update_wm(struct drm_device *dev, int planea_clock,
2733 int planeb_clock, int sr_hdisplay, int pixel_size)
2735 struct drm_i915_private *dev_priv = dev->dev_private;
2738 struct cxsr_latency *latency;
2741 latency = intel_get_cxsr_latency(IS_PINEVIEW_G(dev), dev_priv->fsb_freq,
2742 dev_priv->mem_freq);
2744 DRM_DEBUG_KMS("Unknown FSB/MEM found, disable CxSR\n");
2745 pineview_disable_cxsr(dev);
2749 if (!planea_clock || !planeb_clock) {
2750 sr_clock = planea_clock ? planea_clock : planeb_clock;
2753 wm = intel_calculate_wm(sr_clock, &pineview_display_wm,
2754 pixel_size, latency->display_sr);
2755 reg = I915_READ(DSPFW1);
2756 reg &= ~DSPFW_SR_MASK;
2757 reg |= wm << DSPFW_SR_SHIFT;
2758 I915_WRITE(DSPFW1, reg);
2759 DRM_DEBUG_KMS("DSPFW1 register is %x\n", reg);
2762 wm = intel_calculate_wm(sr_clock, &pineview_cursor_wm,
2763 pixel_size, latency->cursor_sr);
2764 reg = I915_READ(DSPFW3);
2765 reg &= ~DSPFW_CURSOR_SR_MASK;
2766 reg |= (wm & 0x3f) << DSPFW_CURSOR_SR_SHIFT;
2767 I915_WRITE(DSPFW3, reg);
2769 /* Display HPLL off SR */
2770 wm = intel_calculate_wm(sr_clock, &pineview_display_hplloff_wm,
2771 pixel_size, latency->display_hpll_disable);
2772 reg = I915_READ(DSPFW3);
2773 reg &= ~DSPFW_HPLL_SR_MASK;
2774 reg |= wm & DSPFW_HPLL_SR_MASK;
2775 I915_WRITE(DSPFW3, reg);
2777 /* cursor HPLL off SR */
2778 wm = intel_calculate_wm(sr_clock, &pineview_cursor_hplloff_wm,
2779 pixel_size, latency->cursor_hpll_disable);
2780 reg = I915_READ(DSPFW3);
2781 reg &= ~DSPFW_HPLL_CURSOR_MASK;
2782 reg |= (wm & 0x3f) << DSPFW_HPLL_CURSOR_SHIFT;
2783 I915_WRITE(DSPFW3, reg);
2784 DRM_DEBUG_KMS("DSPFW3 register is %x\n", reg);
2787 reg = I915_READ(DSPFW3);
2788 reg |= PINEVIEW_SELF_REFRESH_EN;
2789 I915_WRITE(DSPFW3, reg);
2790 DRM_DEBUG_KMS("Self-refresh is enabled\n");
2792 pineview_disable_cxsr(dev);
2793 DRM_DEBUG_KMS("Self-refresh is disabled\n");
2797 static void g4x_update_wm(struct drm_device *dev, int planea_clock,
2798 int planeb_clock, int sr_hdisplay, int pixel_size)
2800 struct drm_i915_private *dev_priv = dev->dev_private;
2801 int total_size, cacheline_size;
2802 int planea_wm, planeb_wm, cursora_wm, cursorb_wm, cursor_sr;
2803 struct intel_watermark_params planea_params, planeb_params;
2804 unsigned long line_time_us;
2805 int sr_clock, sr_entries = 0, entries_required;
2807 /* Create copies of the base settings for each pipe */
2808 planea_params = planeb_params = g4x_wm_info;
2810 /* Grab a couple of global values before we overwrite them */
2811 total_size = planea_params.fifo_size;
2812 cacheline_size = planea_params.cacheline_size;
2815 * Note: we need to make sure we don't overflow for various clock &
2817 * clocks go from a few thousand to several hundred thousand.
2818 * latency is usually a few thousand
2820 entries_required = ((planea_clock / 1000) * pixel_size * latency_ns) /
2822 entries_required /= G4X_FIFO_LINE_SIZE;
2823 planea_wm = entries_required + planea_params.guard_size;
2825 entries_required = ((planeb_clock / 1000) * pixel_size * latency_ns) /
2827 entries_required /= G4X_FIFO_LINE_SIZE;
2828 planeb_wm = entries_required + planeb_params.guard_size;
2830 cursora_wm = cursorb_wm = 16;
2833 DRM_DEBUG("FIFO watermarks - A: %d, B: %d\n", planea_wm, planeb_wm);
2835 /* Calc sr entries for one plane configs */
2836 if (sr_hdisplay && (!planea_clock || !planeb_clock)) {
2837 /* self-refresh has much higher latency */
2838 static const int sr_latency_ns = 12000;
2840 sr_clock = planea_clock ? planea_clock : planeb_clock;
2841 line_time_us = ((sr_hdisplay * 1000) / sr_clock);
2843 /* Use ns/us then divide to preserve precision */
2844 sr_entries = (((sr_latency_ns / line_time_us) + 1) *
2845 pixel_size * sr_hdisplay) / 1000;
2846 sr_entries = roundup(sr_entries / cacheline_size, 1);
2847 DRM_DEBUG("self-refresh entries: %d\n", sr_entries);
2848 I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN);
2850 /* Turn off self refresh if both pipes are enabled */
2851 I915_WRITE(FW_BLC_SELF, I915_READ(FW_BLC_SELF)
2855 DRM_DEBUG("Setting FIFO watermarks - A: %d, B: %d, SR %d\n",
2856 planea_wm, planeb_wm, sr_entries);
2861 I915_WRITE(DSPFW1, (sr_entries << DSPFW_SR_SHIFT) |
2862 (cursorb_wm << DSPFW_CURSORB_SHIFT) |
2863 (planeb_wm << DSPFW_PLANEB_SHIFT) | planea_wm);
2864 I915_WRITE(DSPFW2, (I915_READ(DSPFW2) & DSPFW_CURSORA_MASK) |
2865 (cursora_wm << DSPFW_CURSORA_SHIFT));
2866 /* HPLL off in SR has some issues on G4x... disable it */
2867 I915_WRITE(DSPFW3, (I915_READ(DSPFW3) & ~DSPFW_HPLL_SR_EN) |
2868 (cursor_sr << DSPFW_CURSOR_SR_SHIFT));
2871 static void i965_update_wm(struct drm_device *dev, int planea_clock,
2872 int planeb_clock, int sr_hdisplay, int pixel_size)
2874 struct drm_i915_private *dev_priv = dev->dev_private;
2875 unsigned long line_time_us;
2876 int sr_clock, sr_entries, srwm = 1;
2878 /* Calc sr entries for one plane configs */
2879 if (sr_hdisplay && (!planea_clock || !planeb_clock)) {
2880 /* self-refresh has much higher latency */
2881 static const int sr_latency_ns = 12000;
2883 sr_clock = planea_clock ? planea_clock : planeb_clock;
2884 line_time_us = ((sr_hdisplay * 1000) / sr_clock);
2886 /* Use ns/us then divide to preserve precision */
2887 sr_entries = (((sr_latency_ns / line_time_us) + 1) *
2888 pixel_size * sr_hdisplay) / 1000;
2889 sr_entries = roundup(sr_entries / I915_FIFO_LINE_SIZE, 1);
2890 DRM_DEBUG("self-refresh entries: %d\n", sr_entries);
2891 srwm = I945_FIFO_SIZE - sr_entries;
2895 I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN);
2897 /* Turn off self refresh if both pipes are enabled */
2898 I915_WRITE(FW_BLC_SELF, I915_READ(FW_BLC_SELF)
2902 DRM_DEBUG_KMS("Setting FIFO watermarks - A: 8, B: 8, C: 8, SR %d\n",
2905 /* 965 has limitations... */
2906 I915_WRITE(DSPFW1, (srwm << DSPFW_SR_SHIFT) | (8 << 16) | (8 << 8) |
2908 I915_WRITE(DSPFW2, (8 << 8) | (8 << 0));
2911 static void i9xx_update_wm(struct drm_device *dev, int planea_clock,
2912 int planeb_clock, int sr_hdisplay, int pixel_size)
2914 struct drm_i915_private *dev_priv = dev->dev_private;
2917 int total_size, cacheline_size, cwm, srwm = 1;
2918 int planea_wm, planeb_wm;
2919 struct intel_watermark_params planea_params, planeb_params;
2920 unsigned long line_time_us;
2921 int sr_clock, sr_entries = 0;
2923 /* Create copies of the base settings for each pipe */
2924 if (IS_I965GM(dev) || IS_I945GM(dev))
2925 planea_params = planeb_params = i945_wm_info;
2926 else if (IS_I9XX(dev))
2927 planea_params = planeb_params = i915_wm_info;
2929 planea_params = planeb_params = i855_wm_info;
2931 /* Grab a couple of global values before we overwrite them */
2932 total_size = planea_params.fifo_size;
2933 cacheline_size = planea_params.cacheline_size;
2935 /* Update per-plane FIFO sizes */
2936 planea_params.fifo_size = dev_priv->display.get_fifo_size(dev, 0);
2937 planeb_params.fifo_size = dev_priv->display.get_fifo_size(dev, 1);
2939 planea_wm = intel_calculate_wm(planea_clock, &planea_params,
2940 pixel_size, latency_ns);
2941 planeb_wm = intel_calculate_wm(planeb_clock, &planeb_params,
2942 pixel_size, latency_ns);
2943 DRM_DEBUG_KMS("FIFO watermarks - A: %d, B: %d\n", planea_wm, planeb_wm);
2946 * Overlay gets an aggressive default since video jitter is bad.
2950 /* Calc sr entries for one plane configs */
2951 if (HAS_FW_BLC(dev) && sr_hdisplay &&
2952 (!planea_clock || !planeb_clock)) {
2953 /* self-refresh has much higher latency */
2954 static const int sr_latency_ns = 6000;
2956 sr_clock = planea_clock ? planea_clock : planeb_clock;
2957 line_time_us = ((sr_hdisplay * 1000) / sr_clock);
2959 /* Use ns/us then divide to preserve precision */
2960 sr_entries = (((sr_latency_ns / line_time_us) + 1) *
2961 pixel_size * sr_hdisplay) / 1000;
2962 sr_entries = roundup(sr_entries / cacheline_size, 1);
2963 DRM_DEBUG_KMS("self-refresh entries: %d\n", sr_entries);
2964 srwm = total_size - sr_entries;
2968 if (IS_I945G(dev) || IS_I945GM(dev))
2969 I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_FIFO_MASK | (srwm & 0xff));
2970 else if (IS_I915GM(dev)) {
2971 /* 915M has a smaller SRWM field */
2972 I915_WRITE(FW_BLC_SELF, srwm & 0x3f);
2973 I915_WRITE(INSTPM, I915_READ(INSTPM) | INSTPM_SELF_EN);
2976 /* Turn off self refresh if both pipes are enabled */
2977 if (IS_I945G(dev) || IS_I945GM(dev)) {
2978 I915_WRITE(FW_BLC_SELF, I915_READ(FW_BLC_SELF)
2980 } else if (IS_I915GM(dev)) {
2981 I915_WRITE(INSTPM, I915_READ(INSTPM) & ~INSTPM_SELF_EN);
2985 DRM_DEBUG_KMS("Setting FIFO watermarks - A: %d, B: %d, C: %d, SR %d\n",
2986 planea_wm, planeb_wm, cwm, srwm);
2988 fwater_lo = ((planeb_wm & 0x3f) << 16) | (planea_wm & 0x3f);
2989 fwater_hi = (cwm & 0x1f);
2991 /* Set request length to 8 cachelines per fetch */
2992 fwater_lo = fwater_lo | (1 << 24) | (1 << 8);
2993 fwater_hi = fwater_hi | (1 << 8);
2995 I915_WRITE(FW_BLC, fwater_lo);
2996 I915_WRITE(FW_BLC2, fwater_hi);
2999 static void i830_update_wm(struct drm_device *dev, int planea_clock, int unused,
3000 int unused2, int pixel_size)
3002 struct drm_i915_private *dev_priv = dev->dev_private;
3003 uint32_t fwater_lo = I915_READ(FW_BLC) & ~0xfff;
3006 i830_wm_info.fifo_size = dev_priv->display.get_fifo_size(dev, 0);
3008 planea_wm = intel_calculate_wm(planea_clock, &i830_wm_info,
3009 pixel_size, latency_ns);
3010 fwater_lo |= (3<<8) | planea_wm;
3012 DRM_DEBUG_KMS("Setting FIFO watermarks - A: %d\n", planea_wm);
3014 I915_WRITE(FW_BLC, fwater_lo);
3018 * intel_update_watermarks - update FIFO watermark values based on current modes
3020 * Calculate watermark values for the various WM regs based on current mode
3021 * and plane configuration.
3023 * There are several cases to deal with here:
3024 * - normal (i.e. non-self-refresh)
3025 * - self-refresh (SR) mode
3026 * - lines are large relative to FIFO size (buffer can hold up to 2)
3027 * - lines are small relative to FIFO size (buffer can hold more than 2
3028 * lines), so need to account for TLB latency
3030 * The normal calculation is:
3031 * watermark = dotclock * bytes per pixel * latency
3032 * where latency is platform & configuration dependent (we assume pessimal
3035 * The SR calculation is:
3036 * watermark = (trunc(latency/line time)+1) * surface width *
3039 * line time = htotal / dotclock
3040 * and latency is assumed to be high, as above.
3042 * The final value programmed to the register should always be rounded up,
3043 * and include an extra 2 entries to account for clock crossings.
3045 * We don't use the sprite, so we can ignore that. And on Crestline we have
3046 * to set the non-SR watermarks to 8.
3048 static void intel_update_watermarks(struct drm_device *dev)
3050 struct drm_i915_private *dev_priv = dev->dev_private;
3051 struct drm_crtc *crtc;
3052 struct intel_crtc *intel_crtc;
3053 int sr_hdisplay = 0;
3054 unsigned long planea_clock = 0, planeb_clock = 0, sr_clock = 0;
3055 int enabled = 0, pixel_size = 0;
3057 if (!dev_priv->display.update_wm)
3060 /* Get the clock config from both planes */
3061 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
3062 intel_crtc = to_intel_crtc(crtc);
3063 if (crtc->enabled) {
3065 if (intel_crtc->plane == 0) {
3066 DRM_DEBUG_KMS("plane A (pipe %d) clock: %d\n",
3067 intel_crtc->pipe, crtc->mode.clock);
3068 planea_clock = crtc->mode.clock;
3070 DRM_DEBUG_KMS("plane B (pipe %d) clock: %d\n",
3071 intel_crtc->pipe, crtc->mode.clock);
3072 planeb_clock = crtc->mode.clock;
3074 sr_hdisplay = crtc->mode.hdisplay;
3075 sr_clock = crtc->mode.clock;
3077 pixel_size = crtc->fb->bits_per_pixel / 8;
3079 pixel_size = 4; /* by default */
3086 dev_priv->display.update_wm(dev, planea_clock, planeb_clock,
3087 sr_hdisplay, pixel_size);
3090 static int intel_crtc_mode_set(struct drm_crtc *crtc,
3091 struct drm_display_mode *mode,
3092 struct drm_display_mode *adjusted_mode,
3094 struct drm_framebuffer *old_fb)
3096 struct drm_device *dev = crtc->dev;
3097 struct drm_i915_private *dev_priv = dev->dev_private;
3098 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3099 int pipe = intel_crtc->pipe;
3100 int plane = intel_crtc->plane;
3101 int fp_reg = (pipe == 0) ? FPA0 : FPB0;
3102 int dpll_reg = (pipe == 0) ? DPLL_A : DPLL_B;
3103 int dpll_md_reg = (intel_crtc->pipe == 0) ? DPLL_A_MD : DPLL_B_MD;
3104 int dspcntr_reg = (plane == 0) ? DSPACNTR : DSPBCNTR;
3105 int pipeconf_reg = (pipe == 0) ? PIPEACONF : PIPEBCONF;
3106 int htot_reg = (pipe == 0) ? HTOTAL_A : HTOTAL_B;
3107 int hblank_reg = (pipe == 0) ? HBLANK_A : HBLANK_B;
3108 int hsync_reg = (pipe == 0) ? HSYNC_A : HSYNC_B;
3109 int vtot_reg = (pipe == 0) ? VTOTAL_A : VTOTAL_B;
3110 int vblank_reg = (pipe == 0) ? VBLANK_A : VBLANK_B;
3111 int vsync_reg = (pipe == 0) ? VSYNC_A : VSYNC_B;
3112 int dspsize_reg = (plane == 0) ? DSPASIZE : DSPBSIZE;
3113 int dsppos_reg = (plane == 0) ? DSPAPOS : DSPBPOS;
3114 int pipesrc_reg = (pipe == 0) ? PIPEASRC : PIPEBSRC;
3115 int refclk, num_connectors = 0;
3116 intel_clock_t clock, reduced_clock;
3117 u32 dpll = 0, fp = 0, fp2 = 0, dspcntr, pipeconf;
3118 bool ok, has_reduced_clock = false, is_sdvo = false, is_dvo = false;
3119 bool is_crt = false, is_lvds = false, is_tv = false, is_dp = false;
3120 bool is_edp = false;
3121 struct drm_mode_config *mode_config = &dev->mode_config;
3122 struct drm_encoder *encoder;
3123 struct intel_encoder *intel_encoder = NULL;
3124 const intel_limit_t *limit;
3126 struct fdi_m_n m_n = {0};
3127 int data_m1_reg = (pipe == 0) ? PIPEA_DATA_M1 : PIPEB_DATA_M1;
3128 int data_n1_reg = (pipe == 0) ? PIPEA_DATA_N1 : PIPEB_DATA_N1;
3129 int link_m1_reg = (pipe == 0) ? PIPEA_LINK_M1 : PIPEB_LINK_M1;
3130 int link_n1_reg = (pipe == 0) ? PIPEA_LINK_N1 : PIPEB_LINK_N1;
3131 int pch_fp_reg = (pipe == 0) ? PCH_FPA0 : PCH_FPB0;
3132 int pch_dpll_reg = (pipe == 0) ? PCH_DPLL_A : PCH_DPLL_B;
3133 int fdi_rx_reg = (pipe == 0) ? FDI_RXA_CTL : FDI_RXB_CTL;
3134 int fdi_tx_reg = (pipe == 0) ? FDI_TXA_CTL : FDI_TXB_CTL;
3135 int trans_dpll_sel = (pipe == 0) ? 0 : 1;
3136 int lvds_reg = LVDS;
3138 int sdvo_pixel_multiply;
3141 drm_vblank_pre_modeset(dev, pipe);
3143 list_for_each_entry(encoder, &mode_config->encoder_list, head) {
3145 if (!encoder || encoder->crtc != crtc)
3148 intel_encoder = enc_to_intel_encoder(encoder);
3150 switch (intel_encoder->type) {
3151 case INTEL_OUTPUT_LVDS:
3154 case INTEL_OUTPUT_SDVO:
3155 case INTEL_OUTPUT_HDMI:
3157 if (intel_encoder->needs_tv_clock)
3160 case INTEL_OUTPUT_DVO:
3163 case INTEL_OUTPUT_TVOUT:
3166 case INTEL_OUTPUT_ANALOG:
3169 case INTEL_OUTPUT_DISPLAYPORT:
3172 case INTEL_OUTPUT_EDP:
3180 if (is_lvds && dev_priv->lvds_use_ssc && num_connectors < 2) {
3181 refclk = dev_priv->lvds_ssc_freq * 1000;
3182 DRM_DEBUG_KMS("using SSC reference clock of %d MHz\n",
3184 } else if (IS_I9XX(dev)) {
3186 if (HAS_PCH_SPLIT(dev))
3187 refclk = 120000; /* 120Mhz refclk */
3194 * Returns a set of divisors for the desired target clock with the given
3195 * refclk, or FALSE. The returned values represent the clock equation:
3196 * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
3198 limit = intel_limit(crtc);
3199 ok = limit->find_pll(limit, crtc, adjusted_mode->clock, refclk, &clock);
3201 DRM_ERROR("Couldn't find PLL settings for mode!\n");
3202 drm_vblank_post_modeset(dev, pipe);
3206 if (is_lvds && dev_priv->lvds_downclock_avail) {
3207 has_reduced_clock = limit->find_pll(limit, crtc,
3208 dev_priv->lvds_downclock,
3211 if (has_reduced_clock && (clock.p != reduced_clock.p)) {
3213 * If the different P is found, it means that we can't
3214 * switch the display clock by using the FP0/FP1.
3215 * In such case we will disable the LVDS downclock
3218 DRM_DEBUG_KMS("Different P is found for "
3219 "LVDS clock/downclock\n");
3220 has_reduced_clock = 0;
3223 /* SDVO TV has fixed PLL values depend on its clock range,
3224 this mirrors vbios setting. */
3225 if (is_sdvo && is_tv) {
3226 if (adjusted_mode->clock >= 100000
3227 && adjusted_mode->clock < 140500) {
3233 } else if (adjusted_mode->clock >= 140500
3234 && adjusted_mode->clock <= 200000) {
3244 if (HAS_PCH_SPLIT(dev)) {
3245 int lane, link_bw, bpp;
3246 /* eDP doesn't require FDI link, so just set DP M/N
3247 according to current link config */
3249 target_clock = mode->clock;
3250 intel_edp_link_config(intel_encoder,
3253 /* DP over FDI requires target mode clock
3254 instead of link clock */
3256 target_clock = mode->clock;
3258 target_clock = adjusted_mode->clock;
3263 /* determine panel color depth */
3264 temp = I915_READ(pipeconf_reg);
3265 temp &= ~PIPE_BPC_MASK;
3267 int lvds_reg = I915_READ(PCH_LVDS);
3268 /* the BPC will be 6 if it is 18-bit LVDS panel */
3269 if ((lvds_reg & LVDS_A3_POWER_MASK) == LVDS_A3_POWER_UP)
3273 } else if (is_edp) {
3274 switch (dev_priv->edp_bpp/3) {
3290 I915_WRITE(pipeconf_reg, temp);
3291 I915_READ(pipeconf_reg);
3293 switch (temp & PIPE_BPC_MASK) {
3307 DRM_ERROR("unknown pipe bpc value\n");
3311 ironlake_compute_m_n(bpp, lane, target_clock, link_bw, &m_n);
3314 /* Ironlake: try to setup display ref clock before DPLL
3315 * enabling. This is only under driver's control after
3316 * PCH B stepping, previous chipset stepping should be
3317 * ignoring this setting.
3319 if (HAS_PCH_SPLIT(dev)) {
3320 temp = I915_READ(PCH_DREF_CONTROL);
3321 /* Always enable nonspread source */
3322 temp &= ~DREF_NONSPREAD_SOURCE_MASK;
3323 temp |= DREF_NONSPREAD_SOURCE_ENABLE;
3324 I915_WRITE(PCH_DREF_CONTROL, temp);
3325 POSTING_READ(PCH_DREF_CONTROL);
3327 temp &= ~DREF_SSC_SOURCE_MASK;
3328 temp |= DREF_SSC_SOURCE_ENABLE;
3329 I915_WRITE(PCH_DREF_CONTROL, temp);
3330 POSTING_READ(PCH_DREF_CONTROL);
3335 if (dev_priv->lvds_use_ssc) {
3336 temp |= DREF_SSC1_ENABLE;
3337 I915_WRITE(PCH_DREF_CONTROL, temp);
3338 POSTING_READ(PCH_DREF_CONTROL);
3342 temp &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
3343 temp |= DREF_CPU_SOURCE_OUTPUT_DOWNSPREAD;
3344 I915_WRITE(PCH_DREF_CONTROL, temp);
3345 POSTING_READ(PCH_DREF_CONTROL);
3347 temp |= DREF_CPU_SOURCE_OUTPUT_NONSPREAD;
3348 I915_WRITE(PCH_DREF_CONTROL, temp);
3349 POSTING_READ(PCH_DREF_CONTROL);
3354 if (IS_PINEVIEW(dev)) {
3355 fp = (1 << clock.n) << 16 | clock.m1 << 8 | clock.m2;
3356 if (has_reduced_clock)
3357 fp2 = (1 << reduced_clock.n) << 16 |
3358 reduced_clock.m1 << 8 | reduced_clock.m2;
3360 fp = clock.n << 16 | clock.m1 << 8 | clock.m2;
3361 if (has_reduced_clock)
3362 fp2 = reduced_clock.n << 16 | reduced_clock.m1 << 8 |
3366 if (!HAS_PCH_SPLIT(dev))
3367 dpll = DPLL_VGA_MODE_DIS;
3371 dpll |= DPLLB_MODE_LVDS;
3373 dpll |= DPLLB_MODE_DAC_SERIAL;
3375 dpll |= DPLL_DVO_HIGH_SPEED;
3376 sdvo_pixel_multiply = adjusted_mode->clock / mode->clock;
3377 if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev))
3378 dpll |= (sdvo_pixel_multiply - 1) << SDVO_MULTIPLIER_SHIFT_HIRES;
3379 else if (HAS_PCH_SPLIT(dev))
3380 dpll |= (sdvo_pixel_multiply - 1) << PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT;
3383 dpll |= DPLL_DVO_HIGH_SPEED;
3385 /* compute bitmask from p1 value */
3386 if (IS_PINEVIEW(dev))
3387 dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW;
3389 dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
3391 if (HAS_PCH_SPLIT(dev))
3392 dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
3393 if (IS_G4X(dev) && has_reduced_clock)
3394 dpll |= (1 << (reduced_clock.p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
3398 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
3401 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
3404 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
3407 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
3410 if (IS_I965G(dev) && !HAS_PCH_SPLIT(dev))
3411 dpll |= (6 << PLL_LOAD_PULSE_PHASE_SHIFT);
3414 dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
3417 dpll |= PLL_P1_DIVIDE_BY_TWO;
3419 dpll |= (clock.p1 - 2) << DPLL_FPA01_P1_POST_DIV_SHIFT;
3421 dpll |= PLL_P2_DIVIDE_BY_4;
3425 if (is_sdvo && is_tv)
3426 dpll |= PLL_REF_INPUT_TVCLKINBC;
3428 /* XXX: just matching BIOS for now */
3429 /* dpll |= PLL_REF_INPUT_TVCLKINBC; */
3431 else if (is_lvds && dev_priv->lvds_use_ssc && num_connectors < 2)
3432 dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
3434 dpll |= PLL_REF_INPUT_DREFCLK;
3436 /* setup pipeconf */
3437 pipeconf = I915_READ(pipeconf_reg);
3439 /* Set up the display plane register */
3440 dspcntr = DISPPLANE_GAMMA_ENABLE;
3442 /* Ironlake's plane is forced to pipe, bit 24 is to
3443 enable color space conversion */
3444 if (!HAS_PCH_SPLIT(dev)) {
3446 dspcntr &= ~DISPPLANE_SEL_PIPE_MASK;
3448 dspcntr |= DISPPLANE_SEL_PIPE_B;
3451 if (pipe == 0 && !IS_I965G(dev)) {
3452 /* Enable pixel doubling when the dot clock is > 90% of the (display)
3455 * XXX: No double-wide on 915GM pipe B. Is that the only reason for the
3459 dev_priv->display.get_display_clock_speed(dev) * 9 / 10)
3460 pipeconf |= PIPEACONF_DOUBLE_WIDE;
3462 pipeconf &= ~PIPEACONF_DOUBLE_WIDE;
3465 /* Disable the panel fitter if it was on our pipe */
3466 if (!HAS_PCH_SPLIT(dev) && intel_panel_fitter_pipe(dev) == pipe)
3467 I915_WRITE(PFIT_CONTROL, 0);
3469 DRM_DEBUG_KMS("Mode for pipe %c:\n", pipe == 0 ? 'A' : 'B');
3470 drm_mode_debug_printmodeline(mode);
3472 /* assign to Ironlake registers */
3473 if (HAS_PCH_SPLIT(dev)) {
3474 fp_reg = pch_fp_reg;
3475 dpll_reg = pch_dpll_reg;
3479 ironlake_disable_pll_edp(crtc);
3480 } else if ((dpll & DPLL_VCO_ENABLE)) {
3481 I915_WRITE(fp_reg, fp);
3482 I915_WRITE(dpll_reg, dpll & ~DPLL_VCO_ENABLE);
3483 I915_READ(dpll_reg);
3487 /* enable transcoder DPLL */
3488 if (HAS_PCH_CPT(dev)) {
3489 temp = I915_READ(PCH_DPLL_SEL);
3490 if (trans_dpll_sel == 0)
3491 temp |= (TRANSA_DPLL_ENABLE | TRANSA_DPLLA_SEL);
3493 temp |= (TRANSB_DPLL_ENABLE | TRANSB_DPLLB_SEL);
3494 I915_WRITE(PCH_DPLL_SEL, temp);
3495 I915_READ(PCH_DPLL_SEL);
3499 /* The LVDS pin pair needs to be on before the DPLLs are enabled.
3500 * This is an exception to the general rule that mode_set doesn't turn
3506 if (HAS_PCH_SPLIT(dev))
3507 lvds_reg = PCH_LVDS;
3509 lvds = I915_READ(lvds_reg);
3510 lvds |= LVDS_PORT_EN | LVDS_A0A2_CLKA_POWER_UP;
3512 if (HAS_PCH_CPT(dev))
3513 lvds |= PORT_TRANS_B_SEL_CPT;
3515 lvds |= LVDS_PIPEB_SELECT;
3517 if (HAS_PCH_CPT(dev))
3518 lvds &= ~PORT_TRANS_SEL_MASK;
3520 lvds &= ~LVDS_PIPEB_SELECT;
3522 /* set the corresponsding LVDS_BORDER bit */
3523 lvds |= dev_priv->lvds_border_bits;
3524 /* Set the B0-B3 data pairs corresponding to whether we're going to
3525 * set the DPLLs for dual-channel mode or not.
3528 lvds |= LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP;
3530 lvds &= ~(LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP);
3532 /* It would be nice to set 24 vs 18-bit mode (LVDS_A3_POWER_UP)
3533 * appropriately here, but we need to look more thoroughly into how
3534 * panels behave in the two modes.
3536 /* set the dithering flag */
3537 if (IS_I965G(dev)) {
3538 if (dev_priv->lvds_dither) {
3539 if (HAS_PCH_SPLIT(dev))
3540 pipeconf |= PIPE_ENABLE_DITHER;
3542 lvds |= LVDS_ENABLE_DITHER;
3544 if (HAS_PCH_SPLIT(dev))
3545 pipeconf &= ~PIPE_ENABLE_DITHER;
3547 lvds &= ~LVDS_ENABLE_DITHER;
3550 I915_WRITE(lvds_reg, lvds);
3551 I915_READ(lvds_reg);
3554 intel_dp_set_m_n(crtc, mode, adjusted_mode);
3555 else if (HAS_PCH_SPLIT(dev)) {
3556 /* For non-DP output, clear any trans DP clock recovery setting.*/
3558 I915_WRITE(TRANSA_DATA_M1, 0);
3559 I915_WRITE(TRANSA_DATA_N1, 0);
3560 I915_WRITE(TRANSA_DP_LINK_M1, 0);
3561 I915_WRITE(TRANSA_DP_LINK_N1, 0);
3563 I915_WRITE(TRANSB_DATA_M1, 0);
3564 I915_WRITE(TRANSB_DATA_N1, 0);
3565 I915_WRITE(TRANSB_DP_LINK_M1, 0);
3566 I915_WRITE(TRANSB_DP_LINK_N1, 0);
3571 I915_WRITE(fp_reg, fp);
3572 I915_WRITE(dpll_reg, dpll);
3573 I915_READ(dpll_reg);
3574 /* Wait for the clocks to stabilize. */
3577 if (IS_I965G(dev) && !HAS_PCH_SPLIT(dev)) {
3579 sdvo_pixel_multiply = adjusted_mode->clock / mode->clock;
3580 I915_WRITE(dpll_md_reg, (0 << DPLL_MD_UDI_DIVIDER_SHIFT) |
3581 ((sdvo_pixel_multiply - 1) << DPLL_MD_UDI_MULTIPLIER_SHIFT));
3583 I915_WRITE(dpll_md_reg, 0);
3585 /* write it again -- the BIOS does, after all */
3586 I915_WRITE(dpll_reg, dpll);
3588 I915_READ(dpll_reg);
3589 /* Wait for the clocks to stabilize. */
3593 if (is_lvds && has_reduced_clock && i915_powersave) {
3594 I915_WRITE(fp_reg + 4, fp2);
3595 intel_crtc->lowfreq_avail = true;
3596 if (HAS_PIPE_CXSR(dev)) {
3597 DRM_DEBUG_KMS("enabling CxSR downclocking\n");
3598 pipeconf |= PIPECONF_CXSR_DOWNCLOCK;
3601 I915_WRITE(fp_reg + 4, fp);
3602 intel_crtc->lowfreq_avail = false;
3603 if (HAS_PIPE_CXSR(dev)) {
3604 DRM_DEBUG_KMS("disabling CxSR downclocking\n");
3605 pipeconf &= ~PIPECONF_CXSR_DOWNCLOCK;
3609 I915_WRITE(htot_reg, (adjusted_mode->crtc_hdisplay - 1) |
3610 ((adjusted_mode->crtc_htotal - 1) << 16));
3611 I915_WRITE(hblank_reg, (adjusted_mode->crtc_hblank_start - 1) |
3612 ((adjusted_mode->crtc_hblank_end - 1) << 16));
3613 I915_WRITE(hsync_reg, (adjusted_mode->crtc_hsync_start - 1) |
3614 ((adjusted_mode->crtc_hsync_end - 1) << 16));
3615 I915_WRITE(vtot_reg, (adjusted_mode->crtc_vdisplay - 1) |
3616 ((adjusted_mode->crtc_vtotal - 1) << 16));
3617 I915_WRITE(vblank_reg, (adjusted_mode->crtc_vblank_start - 1) |
3618 ((adjusted_mode->crtc_vblank_end - 1) << 16));
3619 I915_WRITE(vsync_reg, (adjusted_mode->crtc_vsync_start - 1) |
3620 ((adjusted_mode->crtc_vsync_end - 1) << 16));
3621 /* pipesrc and dspsize control the size that is scaled from, which should
3622 * always be the user's requested size.
3624 if (!HAS_PCH_SPLIT(dev)) {
3625 I915_WRITE(dspsize_reg, ((mode->vdisplay - 1) << 16) |
3626 (mode->hdisplay - 1));
3627 I915_WRITE(dsppos_reg, 0);
3629 I915_WRITE(pipesrc_reg, ((mode->hdisplay - 1) << 16) | (mode->vdisplay - 1));
3631 if (HAS_PCH_SPLIT(dev)) {
3632 I915_WRITE(data_m1_reg, TU_SIZE(m_n.tu) | m_n.gmch_m);
3633 I915_WRITE(data_n1_reg, TU_SIZE(m_n.tu) | m_n.gmch_n);
3634 I915_WRITE(link_m1_reg, m_n.link_m);
3635 I915_WRITE(link_n1_reg, m_n.link_n);
3638 ironlake_set_pll_edp(crtc, adjusted_mode->clock);
3640 /* enable FDI RX PLL too */
3641 temp = I915_READ(fdi_rx_reg);
3642 I915_WRITE(fdi_rx_reg, temp | FDI_RX_PLL_ENABLE);
3643 I915_READ(fdi_rx_reg);
3646 /* enable FDI TX PLL too */
3647 temp = I915_READ(fdi_tx_reg);
3648 I915_WRITE(fdi_tx_reg, temp | FDI_TX_PLL_ENABLE);
3649 I915_READ(fdi_tx_reg);
3651 /* enable FDI RX PCDCLK */
3652 temp = I915_READ(fdi_rx_reg);
3653 I915_WRITE(fdi_rx_reg, temp | FDI_SEL_PCDCLK);
3654 I915_READ(fdi_rx_reg);
3659 I915_WRITE(pipeconf_reg, pipeconf);
3660 I915_READ(pipeconf_reg);
3662 intel_wait_for_vblank(dev);
3664 if (IS_IRONLAKE(dev)) {
3665 /* enable address swizzle for tiling buffer */
3666 temp = I915_READ(DISP_ARB_CTL);
3667 I915_WRITE(DISP_ARB_CTL, temp | DISP_TILE_SURFACE_SWIZZLING);
3670 I915_WRITE(dspcntr_reg, dspcntr);
3672 /* Flush the plane changes */
3673 ret = intel_pipe_set_base(crtc, x, y, old_fb);
3675 if ((IS_I965G(dev) || plane == 0))
3676 intel_update_fbc(crtc, &crtc->mode);
3678 intel_update_watermarks(dev);
3680 drm_vblank_post_modeset(dev, pipe);
3685 /** Loads the palette/gamma unit for the CRTC with the prepared values */
3686 void intel_crtc_load_lut(struct drm_crtc *crtc)
3688 struct drm_device *dev = crtc->dev;
3689 struct drm_i915_private *dev_priv = dev->dev_private;
3690 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3691 int palreg = (intel_crtc->pipe == 0) ? PALETTE_A : PALETTE_B;
3694 /* The clocks have to be on to load the palette. */
3698 /* use legacy palette for Ironlake */
3699 if (HAS_PCH_SPLIT(dev))
3700 palreg = (intel_crtc->pipe == 0) ? LGC_PALETTE_A :
3703 for (i = 0; i < 256; i++) {
3704 I915_WRITE(palreg + 4 * i,
3705 (intel_crtc->lut_r[i] << 16) |
3706 (intel_crtc->lut_g[i] << 8) |
3707 intel_crtc->lut_b[i]);
3711 static int intel_crtc_cursor_set(struct drm_crtc *crtc,
3712 struct drm_file *file_priv,
3714 uint32_t width, uint32_t height)
3716 struct drm_device *dev = crtc->dev;
3717 struct drm_i915_private *dev_priv = dev->dev_private;
3718 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3719 struct drm_gem_object *bo;
3720 struct drm_i915_gem_object *obj_priv;
3721 int pipe = intel_crtc->pipe;
3722 uint32_t control = (pipe == 0) ? CURACNTR : CURBCNTR;
3723 uint32_t base = (pipe == 0) ? CURABASE : CURBBASE;
3724 uint32_t temp = I915_READ(control);
3728 DRM_DEBUG_KMS("\n");
3730 /* if we want to turn off the cursor ignore width and height */
3732 DRM_DEBUG_KMS("cursor off\n");
3733 if (IS_MOBILE(dev) || IS_I9XX(dev)) {
3734 temp &= ~(CURSOR_MODE | MCURSOR_GAMMA_ENABLE);
3735 temp |= CURSOR_MODE_DISABLE;
3737 temp &= ~(CURSOR_ENABLE | CURSOR_GAMMA_ENABLE);
3741 mutex_lock(&dev->struct_mutex);
3745 /* Currently we only support 64x64 cursors */
3746 if (width != 64 || height != 64) {
3747 DRM_ERROR("we currently only support 64x64 cursors\n");
3751 bo = drm_gem_object_lookup(dev, file_priv, handle);
3755 obj_priv = to_intel_bo(bo);
3757 if (bo->size < width * height * 4) {
3758 DRM_ERROR("buffer is to small\n");
3763 /* we only need to pin inside GTT if cursor is non-phy */
3764 mutex_lock(&dev->struct_mutex);
3765 if (!dev_priv->info->cursor_needs_physical) {
3766 ret = i915_gem_object_pin(bo, PAGE_SIZE);
3768 DRM_ERROR("failed to pin cursor bo\n");
3771 addr = obj_priv->gtt_offset;
3773 ret = i915_gem_attach_phys_object(dev, bo, (pipe == 0) ? I915_GEM_PHYS_CURSOR_0 : I915_GEM_PHYS_CURSOR_1);
3775 DRM_ERROR("failed to attach phys object\n");
3778 addr = obj_priv->phys_obj->handle->busaddr;
3782 I915_WRITE(CURSIZE, (height << 12) | width);
3784 /* Hooray for CUR*CNTR differences */
3785 if (IS_MOBILE(dev) || IS_I9XX(dev)) {
3786 temp &= ~(CURSOR_MODE | MCURSOR_PIPE_SELECT);
3787 temp |= CURSOR_MODE_64_ARGB_AX | MCURSOR_GAMMA_ENABLE;
3788 temp |= (pipe << 28); /* Connect to correct pipe */
3790 temp &= ~(CURSOR_FORMAT_MASK);
3791 temp |= CURSOR_ENABLE;
3792 temp |= CURSOR_FORMAT_ARGB | CURSOR_GAMMA_ENABLE;
3796 I915_WRITE(control, temp);
3797 I915_WRITE(base, addr);
3799 if (intel_crtc->cursor_bo) {
3800 if (dev_priv->info->cursor_needs_physical) {
3801 if (intel_crtc->cursor_bo != bo)
3802 i915_gem_detach_phys_object(dev, intel_crtc->cursor_bo);
3804 i915_gem_object_unpin(intel_crtc->cursor_bo);
3805 drm_gem_object_unreference(intel_crtc->cursor_bo);
3808 mutex_unlock(&dev->struct_mutex);
3810 intel_crtc->cursor_addr = addr;
3811 intel_crtc->cursor_bo = bo;
3815 mutex_unlock(&dev->struct_mutex);
3817 drm_gem_object_unreference_unlocked(bo);
3821 static int intel_crtc_cursor_move(struct drm_crtc *crtc, int x, int y)
3823 struct drm_device *dev = crtc->dev;
3824 struct drm_i915_private *dev_priv = dev->dev_private;
3825 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3826 struct intel_framebuffer *intel_fb;
3827 int pipe = intel_crtc->pipe;
3832 intel_fb = to_intel_framebuffer(crtc->fb);
3833 intel_mark_busy(dev, intel_fb->obj);
3837 temp |= CURSOR_POS_SIGN << CURSOR_X_SHIFT;
3841 temp |= CURSOR_POS_SIGN << CURSOR_Y_SHIFT;
3845 temp |= x << CURSOR_X_SHIFT;
3846 temp |= y << CURSOR_Y_SHIFT;
3848 adder = intel_crtc->cursor_addr;
3849 I915_WRITE((pipe == 0) ? CURAPOS : CURBPOS, temp);
3850 I915_WRITE((pipe == 0) ? CURABASE : CURBBASE, adder);
3855 /** Sets the color ramps on behalf of RandR */
3856 void intel_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
3857 u16 blue, int regno)
3859 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3861 intel_crtc->lut_r[regno] = red >> 8;
3862 intel_crtc->lut_g[regno] = green >> 8;
3863 intel_crtc->lut_b[regno] = blue >> 8;
3866 void intel_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
3867 u16 *blue, int regno)
3869 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3871 *red = intel_crtc->lut_r[regno] << 8;
3872 *green = intel_crtc->lut_g[regno] << 8;
3873 *blue = intel_crtc->lut_b[regno] << 8;
3876 static void intel_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
3877 u16 *blue, uint32_t size)
3879 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3885 for (i = 0; i < 256; i++) {
3886 intel_crtc->lut_r[i] = red[i] >> 8;
3887 intel_crtc->lut_g[i] = green[i] >> 8;
3888 intel_crtc->lut_b[i] = blue[i] >> 8;
3891 intel_crtc_load_lut(crtc);
3895 * Get a pipe with a simple mode set on it for doing load-based monitor
3898 * It will be up to the load-detect code to adjust the pipe as appropriate for
3899 * its requirements. The pipe will be connected to no other encoders.
3901 * Currently this code will only succeed if there is a pipe with no encoders
3902 * configured for it. In the future, it could choose to temporarily disable
3903 * some outputs to free up a pipe for its use.
3905 * \return crtc, or NULL if no pipes are available.
3908 /* VESA 640x480x72Hz mode to set on the pipe */
3909 static struct drm_display_mode load_detect_mode = {
3910 DRM_MODE("640x480", DRM_MODE_TYPE_DEFAULT, 31500, 640, 664,
3911 704, 832, 0, 480, 489, 491, 520, 0, DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
3914 struct drm_crtc *intel_get_load_detect_pipe(struct intel_encoder *intel_encoder,
3915 struct drm_connector *connector,
3916 struct drm_display_mode *mode,
3919 struct intel_crtc *intel_crtc;
3920 struct drm_crtc *possible_crtc;
3921 struct drm_crtc *supported_crtc =NULL;
3922 struct drm_encoder *encoder = &intel_encoder->enc;
3923 struct drm_crtc *crtc = NULL;
3924 struct drm_device *dev = encoder->dev;
3925 struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
3926 struct drm_crtc_helper_funcs *crtc_funcs;
3930 * Algorithm gets a little messy:
3931 * - if the connector already has an assigned crtc, use it (but make
3932 * sure it's on first)
3933 * - try to find the first unused crtc that can drive this connector,
3934 * and use that if we find one
3935 * - if there are no unused crtcs available, try to use the first
3936 * one we found that supports the connector
3939 /* See if we already have a CRTC for this connector */
3940 if (encoder->crtc) {
3941 crtc = encoder->crtc;
3942 /* Make sure the crtc and connector are running */
3943 intel_crtc = to_intel_crtc(crtc);
3944 *dpms_mode = intel_crtc->dpms_mode;
3945 if (intel_crtc->dpms_mode != DRM_MODE_DPMS_ON) {
3946 crtc_funcs = crtc->helper_private;
3947 crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON);
3948 encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON);
3953 /* Find an unused one (if possible) */
3954 list_for_each_entry(possible_crtc, &dev->mode_config.crtc_list, head) {
3956 if (!(encoder->possible_crtcs & (1 << i)))
3958 if (!possible_crtc->enabled) {
3959 crtc = possible_crtc;
3962 if (!supported_crtc)
3963 supported_crtc = possible_crtc;
3967 * If we didn't find an unused CRTC, don't use any.
3973 encoder->crtc = crtc;
3974 connector->encoder = encoder;
3975 intel_encoder->load_detect_temp = true;
3977 intel_crtc = to_intel_crtc(crtc);
3978 *dpms_mode = intel_crtc->dpms_mode;
3980 if (!crtc->enabled) {
3982 mode = &load_detect_mode;
3983 drm_crtc_helper_set_mode(crtc, mode, 0, 0, crtc->fb);
3985 if (intel_crtc->dpms_mode != DRM_MODE_DPMS_ON) {
3986 crtc_funcs = crtc->helper_private;
3987 crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON);
3990 /* Add this connector to the crtc */
3991 encoder_funcs->mode_set(encoder, &crtc->mode, &crtc->mode);
3992 encoder_funcs->commit(encoder);
3994 /* let the connector get through one full cycle before testing */
3995 intel_wait_for_vblank(dev);
4000 void intel_release_load_detect_pipe(struct intel_encoder *intel_encoder,
4001 struct drm_connector *connector, int dpms_mode)
4003 struct drm_encoder *encoder = &intel_encoder->enc;
4004 struct drm_device *dev = encoder->dev;
4005 struct drm_crtc *crtc = encoder->crtc;
4006 struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
4007 struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
4009 if (intel_encoder->load_detect_temp) {
4010 encoder->crtc = NULL;
4011 connector->encoder = NULL;
4012 intel_encoder->load_detect_temp = false;
4013 crtc->enabled = drm_helper_crtc_in_use(crtc);
4014 drm_helper_disable_unused_functions(dev);
4017 /* Switch crtc and encoder back off if necessary */
4018 if (crtc->enabled && dpms_mode != DRM_MODE_DPMS_ON) {
4019 if (encoder->crtc == crtc)
4020 encoder_funcs->dpms(encoder, dpms_mode);
4021 crtc_funcs->dpms(crtc, dpms_mode);
4025 /* Returns the clock of the currently programmed mode of the given pipe. */
4026 static int intel_crtc_clock_get(struct drm_device *dev, struct drm_crtc *crtc)
4028 struct drm_i915_private *dev_priv = dev->dev_private;
4029 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4030 int pipe = intel_crtc->pipe;
4031 u32 dpll = I915_READ((pipe == 0) ? DPLL_A : DPLL_B);
4033 intel_clock_t clock;
4035 if ((dpll & DISPLAY_RATE_SELECT_FPA1) == 0)
4036 fp = I915_READ((pipe == 0) ? FPA0 : FPB0);
4038 fp = I915_READ((pipe == 0) ? FPA1 : FPB1);
4040 clock.m1 = (fp & FP_M1_DIV_MASK) >> FP_M1_DIV_SHIFT;
4041 if (IS_PINEVIEW(dev)) {
4042 clock.n = ffs((fp & FP_N_PINEVIEW_DIV_MASK) >> FP_N_DIV_SHIFT) - 1;
4043 clock.m2 = (fp & FP_M2_PINEVIEW_DIV_MASK) >> FP_M2_DIV_SHIFT;
4045 clock.n = (fp & FP_N_DIV_MASK) >> FP_N_DIV_SHIFT;
4046 clock.m2 = (fp & FP_M2_DIV_MASK) >> FP_M2_DIV_SHIFT;
4050 if (IS_PINEVIEW(dev))
4051 clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_PINEVIEW) >>
4052 DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW);
4054 clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK) >>
4055 DPLL_FPA01_P1_POST_DIV_SHIFT);
4057 switch (dpll & DPLL_MODE_MASK) {
4058 case DPLLB_MODE_DAC_SERIAL:
4059 clock.p2 = dpll & DPLL_DAC_SERIAL_P2_CLOCK_DIV_5 ?
4062 case DPLLB_MODE_LVDS:
4063 clock.p2 = dpll & DPLLB_LVDS_P2_CLOCK_DIV_7 ?
4067 DRM_DEBUG_KMS("Unknown DPLL mode %08x in programmed "
4068 "mode\n", (int)(dpll & DPLL_MODE_MASK));
4072 /* XXX: Handle the 100Mhz refclk */
4073 intel_clock(dev, 96000, &clock);
4075 bool is_lvds = (pipe == 1) && (I915_READ(LVDS) & LVDS_PORT_EN);
4078 clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830_LVDS) >>
4079 DPLL_FPA01_P1_POST_DIV_SHIFT);
4082 if ((dpll & PLL_REF_INPUT_MASK) ==
4083 PLLB_REF_INPUT_SPREADSPECTRUMIN) {
4084 /* XXX: might not be 66MHz */
4085 intel_clock(dev, 66000, &clock);
4087 intel_clock(dev, 48000, &clock);
4089 if (dpll & PLL_P1_DIVIDE_BY_TWO)
4092 clock.p1 = ((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830) >>
4093 DPLL_FPA01_P1_POST_DIV_SHIFT) + 2;
4095 if (dpll & PLL_P2_DIVIDE_BY_4)
4100 intel_clock(dev, 48000, &clock);
4104 /* XXX: It would be nice to validate the clocks, but we can't reuse
4105 * i830PllIsValid() because it relies on the xf86_config connector
4106 * configuration being accurate, which it isn't necessarily.
4112 /** Returns the currently programmed mode of the given pipe. */
4113 struct drm_display_mode *intel_crtc_mode_get(struct drm_device *dev,
4114 struct drm_crtc *crtc)
4116 struct drm_i915_private *dev_priv = dev->dev_private;
4117 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4118 int pipe = intel_crtc->pipe;
4119 struct drm_display_mode *mode;
4120 int htot = I915_READ((pipe == 0) ? HTOTAL_A : HTOTAL_B);
4121 int hsync = I915_READ((pipe == 0) ? HSYNC_A : HSYNC_B);
4122 int vtot = I915_READ((pipe == 0) ? VTOTAL_A : VTOTAL_B);
4123 int vsync = I915_READ((pipe == 0) ? VSYNC_A : VSYNC_B);
4125 mode = kzalloc(sizeof(*mode), GFP_KERNEL);
4129 mode->clock = intel_crtc_clock_get(dev, crtc);
4130 mode->hdisplay = (htot & 0xffff) + 1;
4131 mode->htotal = ((htot & 0xffff0000) >> 16) + 1;
4132 mode->hsync_start = (hsync & 0xffff) + 1;
4133 mode->hsync_end = ((hsync & 0xffff0000) >> 16) + 1;
4134 mode->vdisplay = (vtot & 0xffff) + 1;
4135 mode->vtotal = ((vtot & 0xffff0000) >> 16) + 1;
4136 mode->vsync_start = (vsync & 0xffff) + 1;
4137 mode->vsync_end = ((vsync & 0xffff0000) >> 16) + 1;
4139 drm_mode_set_name(mode);
4140 drm_mode_set_crtcinfo(mode, 0);
4145 #define GPU_IDLE_TIMEOUT 500 /* ms */
4147 /* When this timer fires, we've been idle for awhile */
4148 static void intel_gpu_idle_timer(unsigned long arg)
4150 struct drm_device *dev = (struct drm_device *)arg;
4151 drm_i915_private_t *dev_priv = dev->dev_private;
4153 DRM_DEBUG_DRIVER("idle timer fired, downclocking\n");
4155 dev_priv->busy = false;
4157 queue_work(dev_priv->wq, &dev_priv->idle_work);
4160 #define CRTC_IDLE_TIMEOUT 1000 /* ms */
4162 static void intel_crtc_idle_timer(unsigned long arg)
4164 struct intel_crtc *intel_crtc = (struct intel_crtc *)arg;
4165 struct drm_crtc *crtc = &intel_crtc->base;
4166 drm_i915_private_t *dev_priv = crtc->dev->dev_private;
4168 DRM_DEBUG_DRIVER("idle timer fired, downclocking\n");
4170 intel_crtc->busy = false;
4172 queue_work(dev_priv->wq, &dev_priv->idle_work);
4175 static void intel_increase_pllclock(struct drm_crtc *crtc, bool schedule)
4177 struct drm_device *dev = crtc->dev;
4178 drm_i915_private_t *dev_priv = dev->dev_private;
4179 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4180 int pipe = intel_crtc->pipe;
4181 int dpll_reg = (pipe == 0) ? DPLL_A : DPLL_B;
4182 int dpll = I915_READ(dpll_reg);
4184 if (HAS_PCH_SPLIT(dev))
4187 if (!dev_priv->lvds_downclock_avail)
4190 if (!HAS_PIPE_CXSR(dev) && (dpll & DISPLAY_RATE_SELECT_FPA1)) {
4191 DRM_DEBUG_DRIVER("upclocking LVDS\n");
4193 /* Unlock panel regs */
4194 I915_WRITE(PP_CONTROL, I915_READ(PP_CONTROL) | (0xabcd << 16));
4196 dpll &= ~DISPLAY_RATE_SELECT_FPA1;
4197 I915_WRITE(dpll_reg, dpll);
4198 dpll = I915_READ(dpll_reg);
4199 intel_wait_for_vblank(dev);
4200 dpll = I915_READ(dpll_reg);
4201 if (dpll & DISPLAY_RATE_SELECT_FPA1)
4202 DRM_DEBUG_DRIVER("failed to upclock LVDS!\n");
4204 /* ...and lock them again */
4205 I915_WRITE(PP_CONTROL, I915_READ(PP_CONTROL) & 0x3);
4208 /* Schedule downclock */
4210 mod_timer(&intel_crtc->idle_timer, jiffies +
4211 msecs_to_jiffies(CRTC_IDLE_TIMEOUT));
4214 static void intel_decrease_pllclock(struct drm_crtc *crtc)
4216 struct drm_device *dev = crtc->dev;
4217 drm_i915_private_t *dev_priv = dev->dev_private;
4218 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4219 int pipe = intel_crtc->pipe;
4220 int dpll_reg = (pipe == 0) ? DPLL_A : DPLL_B;
4221 int dpll = I915_READ(dpll_reg);
4223 if (HAS_PCH_SPLIT(dev))
4226 if (!dev_priv->lvds_downclock_avail)
4230 * Since this is called by a timer, we should never get here in
4233 if (!HAS_PIPE_CXSR(dev) && intel_crtc->lowfreq_avail) {
4234 DRM_DEBUG_DRIVER("downclocking LVDS\n");
4236 /* Unlock panel regs */
4237 I915_WRITE(PP_CONTROL, I915_READ(PP_CONTROL) | (0xabcd << 16));
4239 dpll |= DISPLAY_RATE_SELECT_FPA1;
4240 I915_WRITE(dpll_reg, dpll);
4241 dpll = I915_READ(dpll_reg);
4242 intel_wait_for_vblank(dev);
4243 dpll = I915_READ(dpll_reg);
4244 if (!(dpll & DISPLAY_RATE_SELECT_FPA1))
4245 DRM_DEBUG_DRIVER("failed to downclock LVDS!\n");
4247 /* ...and lock them again */
4248 I915_WRITE(PP_CONTROL, I915_READ(PP_CONTROL) & 0x3);
4254 * intel_idle_update - adjust clocks for idleness
4255 * @work: work struct
4257 * Either the GPU or display (or both) went idle. Check the busy status
4258 * here and adjust the CRTC and GPU clocks as necessary.
4260 static void intel_idle_update(struct work_struct *work)
4262 drm_i915_private_t *dev_priv = container_of(work, drm_i915_private_t,
4264 struct drm_device *dev = dev_priv->dev;
4265 struct drm_crtc *crtc;
4266 struct intel_crtc *intel_crtc;
4268 if (!i915_powersave)
4271 mutex_lock(&dev->struct_mutex);
4273 if (IS_I945G(dev) || IS_I945GM(dev)) {
4274 DRM_DEBUG_DRIVER("enable memory self refresh on 945\n");
4275 I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN_MASK | FW_BLC_SELF_EN);
4278 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
4279 /* Skip inactive CRTCs */
4283 intel_crtc = to_intel_crtc(crtc);
4284 if (!intel_crtc->busy)
4285 intel_decrease_pllclock(crtc);
4288 mutex_unlock(&dev->struct_mutex);
4292 * intel_mark_busy - mark the GPU and possibly the display busy
4294 * @obj: object we're operating on
4296 * Callers can use this function to indicate that the GPU is busy processing
4297 * commands. If @obj matches one of the CRTC objects (i.e. it's a scanout
4298 * buffer), we'll also mark the display as busy, so we know to increase its
4301 void intel_mark_busy(struct drm_device *dev, struct drm_gem_object *obj)
4303 drm_i915_private_t *dev_priv = dev->dev_private;
4304 struct drm_crtc *crtc = NULL;
4305 struct intel_framebuffer *intel_fb;
4306 struct intel_crtc *intel_crtc;
4308 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4311 if (!dev_priv->busy) {
4312 if (IS_I945G(dev) || IS_I945GM(dev)) {
4315 DRM_DEBUG_DRIVER("disable memory self refresh on 945\n");
4316 fw_blc_self = I915_READ(FW_BLC_SELF);
4317 fw_blc_self &= ~FW_BLC_SELF_EN;
4318 I915_WRITE(FW_BLC_SELF, fw_blc_self | FW_BLC_SELF_EN_MASK);
4320 dev_priv->busy = true;
4322 mod_timer(&dev_priv->idle_timer, jiffies +
4323 msecs_to_jiffies(GPU_IDLE_TIMEOUT));
4325 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
4329 intel_crtc = to_intel_crtc(crtc);
4330 intel_fb = to_intel_framebuffer(crtc->fb);
4331 if (intel_fb->obj == obj) {
4332 if (!intel_crtc->busy) {
4333 if (IS_I945G(dev) || IS_I945GM(dev)) {
4336 DRM_DEBUG_DRIVER("disable memory self refresh on 945\n");
4337 fw_blc_self = I915_READ(FW_BLC_SELF);
4338 fw_blc_self &= ~FW_BLC_SELF_EN;
4339 I915_WRITE(FW_BLC_SELF, fw_blc_self | FW_BLC_SELF_EN_MASK);
4341 /* Non-busy -> busy, upclock */
4342 intel_increase_pllclock(crtc, true);
4343 intel_crtc->busy = true;
4345 /* Busy -> busy, put off timer */
4346 mod_timer(&intel_crtc->idle_timer, jiffies +
4347 msecs_to_jiffies(CRTC_IDLE_TIMEOUT));
4353 static void intel_crtc_destroy(struct drm_crtc *crtc)
4355 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4357 drm_crtc_cleanup(crtc);
4361 struct intel_unpin_work {
4362 struct work_struct work;
4363 struct drm_device *dev;
4364 struct drm_gem_object *old_fb_obj;
4365 struct drm_gem_object *pending_flip_obj;
4366 struct drm_pending_vblank_event *event;
4370 static void intel_unpin_work_fn(struct work_struct *__work)
4372 struct intel_unpin_work *work =
4373 container_of(__work, struct intel_unpin_work, work);
4375 mutex_lock(&work->dev->struct_mutex);
4376 i915_gem_object_unpin(work->old_fb_obj);
4377 drm_gem_object_unreference(work->pending_flip_obj);
4378 drm_gem_object_unreference(work->old_fb_obj);
4379 mutex_unlock(&work->dev->struct_mutex);
4383 void intel_finish_page_flip(struct drm_device *dev, int pipe)
4385 drm_i915_private_t *dev_priv = dev->dev_private;
4386 struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
4387 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4388 struct intel_unpin_work *work;
4389 struct drm_i915_gem_object *obj_priv;
4390 struct drm_pending_vblank_event *e;
4392 unsigned long flags;
4394 /* Ignore early vblank irqs */
4395 if (intel_crtc == NULL)
4398 spin_lock_irqsave(&dev->event_lock, flags);
4399 work = intel_crtc->unpin_work;
4400 if (work == NULL || !work->pending) {
4401 if (work && !work->pending) {
4402 obj_priv = to_intel_bo(work->pending_flip_obj);
4403 DRM_DEBUG_DRIVER("flip finish: %p (%d) not pending?\n",
4405 atomic_read(&obj_priv->pending_flip));
4407 spin_unlock_irqrestore(&dev->event_lock, flags);
4411 intel_crtc->unpin_work = NULL;
4412 drm_vblank_put(dev, intel_crtc->pipe);
4416 do_gettimeofday(&now);
4417 e->event.sequence = drm_vblank_count(dev, intel_crtc->pipe);
4418 e->event.tv_sec = now.tv_sec;
4419 e->event.tv_usec = now.tv_usec;
4420 list_add_tail(&e->base.link,
4421 &e->base.file_priv->event_list);
4422 wake_up_interruptible(&e->base.file_priv->event_wait);
4425 spin_unlock_irqrestore(&dev->event_lock, flags);
4427 obj_priv = to_intel_bo(work->pending_flip_obj);
4429 /* Initial scanout buffer will have a 0 pending flip count */
4430 if ((atomic_read(&obj_priv->pending_flip) == 0) ||
4431 atomic_dec_and_test(&obj_priv->pending_flip))
4432 DRM_WAKEUP(&dev_priv->pending_flip_queue);
4433 schedule_work(&work->work);
4436 void intel_prepare_page_flip(struct drm_device *dev, int plane)
4438 drm_i915_private_t *dev_priv = dev->dev_private;
4439 struct intel_crtc *intel_crtc =
4440 to_intel_crtc(dev_priv->plane_to_crtc_mapping[plane]);
4441 unsigned long flags;
4443 spin_lock_irqsave(&dev->event_lock, flags);
4444 if (intel_crtc->unpin_work) {
4445 intel_crtc->unpin_work->pending = 1;
4447 DRM_DEBUG_DRIVER("preparing flip with no unpin work?\n");
4449 spin_unlock_irqrestore(&dev->event_lock, flags);
4452 static int intel_crtc_page_flip(struct drm_crtc *crtc,
4453 struct drm_framebuffer *fb,
4454 struct drm_pending_vblank_event *event)
4456 struct drm_device *dev = crtc->dev;
4457 struct drm_i915_private *dev_priv = dev->dev_private;
4458 struct intel_framebuffer *intel_fb;
4459 struct drm_i915_gem_object *obj_priv;
4460 struct drm_gem_object *obj;
4461 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4462 struct intel_unpin_work *work;
4463 unsigned long flags;
4464 int pipesrc_reg = (intel_crtc->pipe == 0) ? PIPEASRC : PIPEBSRC;
4468 work = kzalloc(sizeof *work, GFP_KERNEL);
4472 mutex_lock(&dev->struct_mutex);
4474 work->event = event;
4475 work->dev = crtc->dev;
4476 intel_fb = to_intel_framebuffer(crtc->fb);
4477 work->old_fb_obj = intel_fb->obj;
4478 INIT_WORK(&work->work, intel_unpin_work_fn);
4480 /* We borrow the event spin lock for protecting unpin_work */
4481 spin_lock_irqsave(&dev->event_lock, flags);
4482 if (intel_crtc->unpin_work) {
4483 DRM_DEBUG_DRIVER("flip queue: crtc already busy\n");
4484 spin_unlock_irqrestore(&dev->event_lock, flags);
4486 mutex_unlock(&dev->struct_mutex);
4489 intel_crtc->unpin_work = work;
4490 spin_unlock_irqrestore(&dev->event_lock, flags);
4492 intel_fb = to_intel_framebuffer(fb);
4493 obj = intel_fb->obj;
4495 ret = intel_pin_and_fence_fb_obj(dev, obj);
4497 DRM_DEBUG_DRIVER("flip queue: %p pin & fence failed\n",
4500 intel_crtc->unpin_work = NULL;
4501 mutex_unlock(&dev->struct_mutex);
4505 /* Reference the objects for the scheduled work. */
4506 drm_gem_object_reference(work->old_fb_obj);
4507 drm_gem_object_reference(obj);
4510 i915_gem_object_flush_write_domain(obj);
4511 drm_vblank_get(dev, intel_crtc->pipe);
4512 obj_priv = to_intel_bo(obj);
4513 atomic_inc(&obj_priv->pending_flip);
4514 work->pending_flip_obj = obj;
4517 OUT_RING(MI_DISPLAY_FLIP |
4518 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
4519 OUT_RING(fb->pitch);
4520 if (IS_I965G(dev)) {
4521 OUT_RING(obj_priv->gtt_offset | obj_priv->tiling_mode);
4522 pipesrc = I915_READ(pipesrc_reg);
4523 OUT_RING(pipesrc & 0x0fff0fff);
4525 OUT_RING(obj_priv->gtt_offset);
4530 mutex_unlock(&dev->struct_mutex);
4535 static const struct drm_crtc_helper_funcs intel_helper_funcs = {
4536 .dpms = intel_crtc_dpms,
4537 .mode_fixup = intel_crtc_mode_fixup,
4538 .mode_set = intel_crtc_mode_set,
4539 .mode_set_base = intel_pipe_set_base,
4540 .prepare = intel_crtc_prepare,
4541 .commit = intel_crtc_commit,
4542 .load_lut = intel_crtc_load_lut,
4545 static const struct drm_crtc_funcs intel_crtc_funcs = {
4546 .cursor_set = intel_crtc_cursor_set,
4547 .cursor_move = intel_crtc_cursor_move,
4548 .gamma_set = intel_crtc_gamma_set,
4549 .set_config = drm_crtc_helper_set_config,
4550 .destroy = intel_crtc_destroy,
4551 .page_flip = intel_crtc_page_flip,
4555 static void intel_crtc_init(struct drm_device *dev, int pipe)
4557 drm_i915_private_t *dev_priv = dev->dev_private;
4558 struct intel_crtc *intel_crtc;
4561 intel_crtc = kzalloc(sizeof(struct intel_crtc) + (INTELFB_CONN_LIMIT * sizeof(struct drm_connector *)), GFP_KERNEL);
4562 if (intel_crtc == NULL)
4565 drm_crtc_init(dev, &intel_crtc->base, &intel_crtc_funcs);
4567 drm_mode_crtc_set_gamma_size(&intel_crtc->base, 256);
4568 intel_crtc->pipe = pipe;
4569 intel_crtc->plane = pipe;
4570 for (i = 0; i < 256; i++) {
4571 intel_crtc->lut_r[i] = i;
4572 intel_crtc->lut_g[i] = i;
4573 intel_crtc->lut_b[i] = i;
4576 /* Swap pipes & planes for FBC on pre-965 */
4577 intel_crtc->pipe = pipe;
4578 intel_crtc->plane = pipe;
4579 if (IS_MOBILE(dev) && (IS_I9XX(dev) && !IS_I965G(dev))) {
4580 DRM_DEBUG_KMS("swapping pipes & planes for FBC\n");
4581 intel_crtc->plane = ((pipe == 0) ? 1 : 0);
4584 BUG_ON(pipe >= ARRAY_SIZE(dev_priv->plane_to_crtc_mapping) ||
4585 dev_priv->plane_to_crtc_mapping[intel_crtc->plane] != NULL);
4586 dev_priv->plane_to_crtc_mapping[intel_crtc->plane] = &intel_crtc->base;
4587 dev_priv->pipe_to_crtc_mapping[intel_crtc->pipe] = &intel_crtc->base;
4589 intel_crtc->cursor_addr = 0;
4590 intel_crtc->dpms_mode = DRM_MODE_DPMS_OFF;
4591 drm_crtc_helper_add(&intel_crtc->base, &intel_helper_funcs);
4593 intel_crtc->busy = false;
4595 setup_timer(&intel_crtc->idle_timer, intel_crtc_idle_timer,
4596 (unsigned long)intel_crtc);
4599 int intel_get_pipe_from_crtc_id(struct drm_device *dev, void *data,
4600 struct drm_file *file_priv)
4602 drm_i915_private_t *dev_priv = dev->dev_private;
4603 struct drm_i915_get_pipe_from_crtc_id *pipe_from_crtc_id = data;
4604 struct drm_mode_object *drmmode_obj;
4605 struct intel_crtc *crtc;
4608 DRM_ERROR("called with no initialization\n");
4612 drmmode_obj = drm_mode_object_find(dev, pipe_from_crtc_id->crtc_id,
4613 DRM_MODE_OBJECT_CRTC);
4616 DRM_ERROR("no such CRTC id\n");
4620 crtc = to_intel_crtc(obj_to_crtc(drmmode_obj));
4621 pipe_from_crtc_id->pipe = crtc->pipe;
4626 struct drm_crtc *intel_get_crtc_from_pipe(struct drm_device *dev, int pipe)
4628 struct drm_crtc *crtc = NULL;
4630 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
4631 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4632 if (intel_crtc->pipe == pipe)
4638 static int intel_encoder_clones(struct drm_device *dev, int type_mask)
4641 struct drm_encoder *encoder;
4644 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
4645 struct intel_encoder *intel_encoder = enc_to_intel_encoder(encoder);
4646 if (type_mask & intel_encoder->clone_mask)
4647 index_mask |= (1 << entry);
4654 static void intel_setup_outputs(struct drm_device *dev)
4656 struct drm_i915_private *dev_priv = dev->dev_private;
4657 struct drm_encoder *encoder;
4659 intel_crt_init(dev);
4661 /* Set up integrated LVDS */
4662 if (IS_MOBILE(dev) && !IS_I830(dev))
4663 intel_lvds_init(dev);
4665 if (HAS_PCH_SPLIT(dev)) {
4668 if (IS_MOBILE(dev) && (I915_READ(DP_A) & DP_DETECTED))
4669 intel_dp_init(dev, DP_A);
4671 if (I915_READ(HDMIB) & PORT_DETECTED) {
4672 /* PCH SDVOB multiplex with HDMIB */
4673 found = intel_sdvo_init(dev, PCH_SDVOB);
4675 intel_hdmi_init(dev, HDMIB);
4676 if (!found && (I915_READ(PCH_DP_B) & DP_DETECTED))
4677 intel_dp_init(dev, PCH_DP_B);
4680 if (I915_READ(HDMIC) & PORT_DETECTED)
4681 intel_hdmi_init(dev, HDMIC);
4683 if (I915_READ(HDMID) & PORT_DETECTED)
4684 intel_hdmi_init(dev, HDMID);
4686 if (I915_READ(PCH_DP_C) & DP_DETECTED)
4687 intel_dp_init(dev, PCH_DP_C);
4689 if (I915_READ(PCH_DP_D) & DP_DETECTED)
4690 intel_dp_init(dev, PCH_DP_D);
4692 } else if (SUPPORTS_DIGITAL_OUTPUTS(dev)) {
4695 if (I915_READ(SDVOB) & SDVO_DETECTED) {
4696 DRM_DEBUG_KMS("probing SDVOB\n");
4697 found = intel_sdvo_init(dev, SDVOB);
4698 if (!found && SUPPORTS_INTEGRATED_HDMI(dev)) {
4699 DRM_DEBUG_KMS("probing HDMI on SDVOB\n");
4700 intel_hdmi_init(dev, SDVOB);
4703 if (!found && SUPPORTS_INTEGRATED_DP(dev)) {
4704 DRM_DEBUG_KMS("probing DP_B\n");
4705 intel_dp_init(dev, DP_B);
4709 /* Before G4X SDVOC doesn't have its own detect register */
4711 if (I915_READ(SDVOB) & SDVO_DETECTED) {
4712 DRM_DEBUG_KMS("probing SDVOC\n");
4713 found = intel_sdvo_init(dev, SDVOC);
4716 if (!found && (I915_READ(SDVOC) & SDVO_DETECTED)) {
4718 if (SUPPORTS_INTEGRATED_HDMI(dev)) {
4719 DRM_DEBUG_KMS("probing HDMI on SDVOC\n");
4720 intel_hdmi_init(dev, SDVOC);
4722 if (SUPPORTS_INTEGRATED_DP(dev)) {
4723 DRM_DEBUG_KMS("probing DP_C\n");
4724 intel_dp_init(dev, DP_C);
4728 if (SUPPORTS_INTEGRATED_DP(dev) &&
4729 (I915_READ(DP_D) & DP_DETECTED)) {
4730 DRM_DEBUG_KMS("probing DP_D\n");
4731 intel_dp_init(dev, DP_D);
4733 } else if (IS_GEN2(dev))
4734 intel_dvo_init(dev);
4736 if (SUPPORTS_TV(dev))
4739 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
4740 struct intel_encoder *intel_encoder = enc_to_intel_encoder(encoder);
4742 encoder->possible_crtcs = intel_encoder->crtc_mask;
4743 encoder->possible_clones = intel_encoder_clones(dev,
4744 intel_encoder->clone_mask);
4748 static void intel_user_framebuffer_destroy(struct drm_framebuffer *fb)
4750 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
4751 struct drm_device *dev = fb->dev;
4754 intelfb_remove(dev, fb);
4756 drm_framebuffer_cleanup(fb);
4757 drm_gem_object_unreference_unlocked(intel_fb->obj);
4762 static int intel_user_framebuffer_create_handle(struct drm_framebuffer *fb,
4763 struct drm_file *file_priv,
4764 unsigned int *handle)
4766 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
4767 struct drm_gem_object *object = intel_fb->obj;
4769 return drm_gem_handle_create(file_priv, object, handle);
4772 static const struct drm_framebuffer_funcs intel_fb_funcs = {
4773 .destroy = intel_user_framebuffer_destroy,
4774 .create_handle = intel_user_framebuffer_create_handle,
4777 int intel_framebuffer_create(struct drm_device *dev,
4778 struct drm_mode_fb_cmd *mode_cmd,
4779 struct drm_framebuffer **fb,
4780 struct drm_gem_object *obj)
4782 struct intel_framebuffer *intel_fb;
4785 intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
4789 ret = drm_framebuffer_init(dev, &intel_fb->base, &intel_fb_funcs);
4791 DRM_ERROR("framebuffer init failed %d\n", ret);
4795 drm_helper_mode_fill_fb_struct(&intel_fb->base, mode_cmd);
4797 intel_fb->obj = obj;
4799 *fb = &intel_fb->base;
4805 static struct drm_framebuffer *
4806 intel_user_framebuffer_create(struct drm_device *dev,
4807 struct drm_file *filp,
4808 struct drm_mode_fb_cmd *mode_cmd)
4810 struct drm_gem_object *obj;
4811 struct drm_framebuffer *fb;
4814 obj = drm_gem_object_lookup(dev, filp, mode_cmd->handle);
4818 ret = intel_framebuffer_create(dev, mode_cmd, &fb, obj);
4820 drm_gem_object_unreference_unlocked(obj);
4827 static const struct drm_mode_config_funcs intel_mode_funcs = {
4828 .fb_create = intel_user_framebuffer_create,
4829 .fb_changed = intelfb_probe,
4832 static struct drm_gem_object *
4833 intel_alloc_power_context(struct drm_device *dev)
4835 struct drm_gem_object *pwrctx;
4838 pwrctx = drm_gem_object_alloc(dev, 4096);
4840 DRM_DEBUG("failed to alloc power context, RC6 disabled\n");
4844 mutex_lock(&dev->struct_mutex);
4845 ret = i915_gem_object_pin(pwrctx, 4096);
4847 DRM_ERROR("failed to pin power context: %d\n", ret);
4851 ret = i915_gem_object_set_to_gtt_domain(pwrctx, 1);
4853 DRM_ERROR("failed to set-domain on power context: %d\n", ret);
4856 mutex_unlock(&dev->struct_mutex);
4861 i915_gem_object_unpin(pwrctx);
4863 drm_gem_object_unreference(pwrctx);
4864 mutex_unlock(&dev->struct_mutex);
4868 void ironlake_enable_drps(struct drm_device *dev)
4870 struct drm_i915_private *dev_priv = dev->dev_private;
4871 u32 rgvmodectl = I915_READ(MEMMODECTL), rgvswctl;
4872 u8 fmax, fmin, fstart, vstart;
4875 /* 100ms RC evaluation intervals */
4876 I915_WRITE(RCUPEI, 100000);
4877 I915_WRITE(RCDNEI, 100000);
4879 /* Set max/min thresholds to 90ms and 80ms respectively */
4880 I915_WRITE(RCBMAXAVG, 90000);
4881 I915_WRITE(RCBMINAVG, 80000);
4883 I915_WRITE(MEMIHYST, 1);
4885 /* Set up min, max, and cur for interrupt handling */
4886 fmax = (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT;
4887 fmin = (rgvmodectl & MEMMODE_FMIN_MASK);
4888 fstart = (rgvmodectl & MEMMODE_FSTART_MASK) >>
4889 MEMMODE_FSTART_SHIFT;
4890 vstart = (I915_READ(PXVFREQ_BASE + (fstart * 4)) & PXVFREQ_PX_MASK) >>
4893 dev_priv->max_delay = fstart; /* can't go to fmax w/o IPS */
4894 dev_priv->min_delay = fmin;
4895 dev_priv->cur_delay = fstart;
4897 I915_WRITE(MEMINTREN, MEMINT_CX_SUPR_EN | MEMINT_EVAL_CHG_EN);
4900 * Interrupts will be enabled in ironlake_irq_postinstall
4903 I915_WRITE(VIDSTART, vstart);
4904 POSTING_READ(VIDSTART);
4906 rgvmodectl |= MEMMODE_SWMODE_EN;
4907 I915_WRITE(MEMMODECTL, rgvmodectl);
4909 while (I915_READ(MEMSWCTL) & MEMCTL_CMD_STS) {
4911 DRM_ERROR("stuck trying to change perf mode\n");
4918 rgvswctl = (MEMCTL_CMD_CHFREQ << MEMCTL_CMD_SHIFT) |
4919 (fstart << MEMCTL_FREQ_SHIFT) | MEMCTL_SFCAVM;
4920 I915_WRITE(MEMSWCTL, rgvswctl);
4921 POSTING_READ(MEMSWCTL);
4923 rgvswctl |= MEMCTL_CMD_STS;
4924 I915_WRITE(MEMSWCTL, rgvswctl);
4927 void ironlake_disable_drps(struct drm_device *dev)
4929 struct drm_i915_private *dev_priv = dev->dev_private;
4933 /* Ack interrupts, disable EFC interrupt */
4934 I915_WRITE(MEMINTREN, I915_READ(MEMINTREN) & ~MEMINT_EVAL_CHG_EN);
4935 I915_WRITE(MEMINTRSTS, MEMINT_EVAL_CHG);
4936 I915_WRITE(DEIER, I915_READ(DEIER) & ~DE_PCU_EVENT);
4937 I915_WRITE(DEIIR, DE_PCU_EVENT);
4938 I915_WRITE(DEIMR, I915_READ(DEIMR) | DE_PCU_EVENT);
4940 /* Go back to the starting frequency */
4941 fstart = (I915_READ(MEMMODECTL) & MEMMODE_FSTART_MASK) >>
4942 MEMMODE_FSTART_SHIFT;
4943 rgvswctl = (MEMCTL_CMD_CHFREQ << MEMCTL_CMD_SHIFT) |
4944 (fstart << MEMCTL_FREQ_SHIFT) | MEMCTL_SFCAVM;
4945 I915_WRITE(MEMSWCTL, rgvswctl);
4947 rgvswctl |= MEMCTL_CMD_STS;
4948 I915_WRITE(MEMSWCTL, rgvswctl);
4953 void intel_init_clock_gating(struct drm_device *dev)
4955 struct drm_i915_private *dev_priv = dev->dev_private;
4958 * Disable clock gating reported to work incorrectly according to the
4959 * specs, but enable as much else as we can.
4961 if (HAS_PCH_SPLIT(dev)) {
4962 uint32_t dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE;
4964 if (IS_IRONLAKE(dev)) {
4965 /* Required for FBC */
4966 dspclk_gate |= DPFDUNIT_CLOCK_GATE_DISABLE;
4967 /* Required for CxSR */
4968 dspclk_gate |= DPARBUNIT_CLOCK_GATE_DISABLE;
4970 I915_WRITE(PCH_3DCGDIS0,
4971 MARIUNIT_CLOCK_GATE_DISABLE |
4972 SVSMUNIT_CLOCK_GATE_DISABLE);
4975 I915_WRITE(PCH_DSPCLK_GATE_D, dspclk_gate);
4977 } else if (IS_G4X(dev)) {
4978 uint32_t dspclk_gate;
4979 I915_WRITE(RENCLK_GATE_D1, 0);
4980 I915_WRITE(RENCLK_GATE_D2, VF_UNIT_CLOCK_GATE_DISABLE |
4981 GS_UNIT_CLOCK_GATE_DISABLE |
4982 CL_UNIT_CLOCK_GATE_DISABLE);
4983 I915_WRITE(RAMCLK_GATE_D, 0);
4984 dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE |
4985 OVRUNIT_CLOCK_GATE_DISABLE |
4986 OVCUNIT_CLOCK_GATE_DISABLE;
4988 dspclk_gate |= DSSUNIT_CLOCK_GATE_DISABLE;
4989 I915_WRITE(DSPCLK_GATE_D, dspclk_gate);
4990 } else if (IS_I965GM(dev)) {
4991 I915_WRITE(RENCLK_GATE_D1, I965_RCC_CLOCK_GATE_DISABLE);
4992 I915_WRITE(RENCLK_GATE_D2, 0);
4993 I915_WRITE(DSPCLK_GATE_D, 0);
4994 I915_WRITE(RAMCLK_GATE_D, 0);
4995 I915_WRITE16(DEUC, 0);
4996 } else if (IS_I965G(dev)) {
4997 I915_WRITE(RENCLK_GATE_D1, I965_RCZ_CLOCK_GATE_DISABLE |
4998 I965_RCC_CLOCK_GATE_DISABLE |
4999 I965_RCPB_CLOCK_GATE_DISABLE |
5000 I965_ISC_CLOCK_GATE_DISABLE |
5001 I965_FBC_CLOCK_GATE_DISABLE);
5002 I915_WRITE(RENCLK_GATE_D2, 0);
5003 } else if (IS_I9XX(dev)) {
5004 u32 dstate = I915_READ(D_STATE);
5006 dstate |= DSTATE_PLL_D3_OFF | DSTATE_GFX_CLOCK_GATING |
5007 DSTATE_DOT_CLOCK_GATING;
5008 I915_WRITE(D_STATE, dstate);
5009 } else if (IS_I85X(dev) || IS_I865G(dev)) {
5010 I915_WRITE(RENCLK_GATE_D1, SV_CLOCK_GATE_DISABLE);
5011 } else if (IS_I830(dev)) {
5012 I915_WRITE(DSPCLK_GATE_D, OVRUNIT_CLOCK_GATE_DISABLE);
5016 * GPU can automatically power down the render unit if given a page
5019 if (I915_HAS_RC6(dev) && drm_core_check_feature(dev, DRIVER_MODESET)) {
5020 struct drm_i915_gem_object *obj_priv = NULL;
5022 if (dev_priv->pwrctx) {
5023 obj_priv = to_intel_bo(dev_priv->pwrctx);
5025 struct drm_gem_object *pwrctx;
5027 pwrctx = intel_alloc_power_context(dev);
5029 dev_priv->pwrctx = pwrctx;
5030 obj_priv = to_intel_bo(pwrctx);
5035 I915_WRITE(PWRCTXA, obj_priv->gtt_offset | PWRCTX_EN);
5036 I915_WRITE(MCHBAR_RENDER_STANDBY,
5037 I915_READ(MCHBAR_RENDER_STANDBY) & ~RCX_SW_EXIT);
5042 /* Set up chip specific display functions */
5043 static void intel_init_display(struct drm_device *dev)
5045 struct drm_i915_private *dev_priv = dev->dev_private;
5047 /* We always want a DPMS function */
5048 if (HAS_PCH_SPLIT(dev))
5049 dev_priv->display.dpms = ironlake_crtc_dpms;
5051 dev_priv->display.dpms = i9xx_crtc_dpms;
5053 /* Only mobile has FBC, leave pointers NULL for other chips */
5054 if (IS_MOBILE(dev)) {
5056 dev_priv->display.fbc_enabled = g4x_fbc_enabled;
5057 dev_priv->display.enable_fbc = g4x_enable_fbc;
5058 dev_priv->display.disable_fbc = g4x_disable_fbc;
5059 } else if (IS_I965GM(dev)) {
5060 dev_priv->display.fbc_enabled = i8xx_fbc_enabled;
5061 dev_priv->display.enable_fbc = i8xx_enable_fbc;
5062 dev_priv->display.disable_fbc = i8xx_disable_fbc;
5064 /* 855GM needs testing */
5067 /* Returns the core display clock speed */
5068 if (IS_I945G(dev) || (IS_G33(dev) && ! IS_PINEVIEW_M(dev)))
5069 dev_priv->display.get_display_clock_speed =
5070 i945_get_display_clock_speed;
5071 else if (IS_I915G(dev))
5072 dev_priv->display.get_display_clock_speed =
5073 i915_get_display_clock_speed;
5074 else if (IS_I945GM(dev) || IS_845G(dev) || IS_PINEVIEW_M(dev))
5075 dev_priv->display.get_display_clock_speed =
5076 i9xx_misc_get_display_clock_speed;
5077 else if (IS_I915GM(dev))
5078 dev_priv->display.get_display_clock_speed =
5079 i915gm_get_display_clock_speed;
5080 else if (IS_I865G(dev))
5081 dev_priv->display.get_display_clock_speed =
5082 i865_get_display_clock_speed;
5083 else if (IS_I85X(dev))
5084 dev_priv->display.get_display_clock_speed =
5085 i855_get_display_clock_speed;
5087 dev_priv->display.get_display_clock_speed =
5088 i830_get_display_clock_speed;
5090 /* For FIFO watermark updates */
5091 if (HAS_PCH_SPLIT(dev))
5092 dev_priv->display.update_wm = NULL;
5093 else if (IS_PINEVIEW(dev)) {
5094 if (!intel_get_cxsr_latency(IS_PINEVIEW_G(dev),
5096 dev_priv->mem_freq)) {
5097 DRM_INFO("failed to find known CxSR latency "
5098 "(found fsb freq %d, mem freq %d), "
5100 dev_priv->fsb_freq, dev_priv->mem_freq);
5101 /* Disable CxSR and never update its watermark again */
5102 pineview_disable_cxsr(dev);
5103 dev_priv->display.update_wm = NULL;
5105 dev_priv->display.update_wm = pineview_update_wm;
5106 } else if (IS_G4X(dev))
5107 dev_priv->display.update_wm = g4x_update_wm;
5108 else if (IS_I965G(dev))
5109 dev_priv->display.update_wm = i965_update_wm;
5110 else if (IS_I9XX(dev) || IS_MOBILE(dev)) {
5111 dev_priv->display.update_wm = i9xx_update_wm;
5112 dev_priv->display.get_fifo_size = i9xx_get_fifo_size;
5115 dev_priv->display.get_fifo_size = i85x_get_fifo_size;
5116 else if (IS_845G(dev))
5117 dev_priv->display.get_fifo_size = i845_get_fifo_size;
5119 dev_priv->display.get_fifo_size = i830_get_fifo_size;
5120 dev_priv->display.update_wm = i830_update_wm;
5124 void intel_modeset_init(struct drm_device *dev)
5126 struct drm_i915_private *dev_priv = dev->dev_private;
5130 drm_mode_config_init(dev);
5132 dev->mode_config.min_width = 0;
5133 dev->mode_config.min_height = 0;
5135 dev->mode_config.funcs = (void *)&intel_mode_funcs;
5137 intel_init_display(dev);
5139 if (IS_I965G(dev)) {
5140 dev->mode_config.max_width = 8192;
5141 dev->mode_config.max_height = 8192;
5142 } else if (IS_I9XX(dev)) {
5143 dev->mode_config.max_width = 4096;
5144 dev->mode_config.max_height = 4096;
5146 dev->mode_config.max_width = 2048;
5147 dev->mode_config.max_height = 2048;
5150 /* set memory base */
5152 dev->mode_config.fb_base = pci_resource_start(dev->pdev, 2);
5154 dev->mode_config.fb_base = pci_resource_start(dev->pdev, 0);
5156 if (IS_MOBILE(dev) || IS_I9XX(dev))
5160 DRM_DEBUG_KMS("%d display pipe%s available.\n",
5161 num_pipe, num_pipe > 1 ? "s" : "");
5163 for (i = 0; i < num_pipe; i++) {
5164 intel_crtc_init(dev, i);
5167 intel_setup_outputs(dev);
5169 intel_init_clock_gating(dev);
5171 if (IS_IRONLAKE_M(dev))
5172 ironlake_enable_drps(dev);
5174 INIT_WORK(&dev_priv->idle_work, intel_idle_update);
5175 setup_timer(&dev_priv->idle_timer, intel_gpu_idle_timer,
5176 (unsigned long)dev);
5178 intel_setup_overlay(dev);
5181 void intel_modeset_cleanup(struct drm_device *dev)
5183 struct drm_i915_private *dev_priv = dev->dev_private;
5184 struct drm_crtc *crtc;
5185 struct intel_crtc *intel_crtc;
5187 mutex_lock(&dev->struct_mutex);
5189 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
5190 /* Skip inactive CRTCs */
5194 intel_crtc = to_intel_crtc(crtc);
5195 intel_increase_pllclock(crtc, false);
5196 del_timer_sync(&intel_crtc->idle_timer);
5199 del_timer_sync(&dev_priv->idle_timer);
5201 if (dev_priv->display.disable_fbc)
5202 dev_priv->display.disable_fbc(dev);
5204 if (dev_priv->pwrctx) {
5205 struct drm_i915_gem_object *obj_priv;
5207 obj_priv = to_intel_bo(dev_priv->pwrctx);
5208 I915_WRITE(PWRCTXA, obj_priv->gtt_offset &~ PWRCTX_EN);
5210 i915_gem_object_unpin(dev_priv->pwrctx);
5211 drm_gem_object_unreference(dev_priv->pwrctx);
5214 if (IS_IRONLAKE_M(dev))
5215 ironlake_disable_drps(dev);
5217 mutex_unlock(&dev->struct_mutex);
5219 drm_mode_config_cleanup(dev);
5224 * Return which encoder is currently attached for connector.
5226 struct drm_encoder *intel_attached_encoder (struct drm_connector *connector)
5228 struct drm_mode_object *obj;
5229 struct drm_encoder *encoder;
5232 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
5233 if (connector->encoder_ids[i] == 0)
5236 obj = drm_mode_object_find(connector->dev,
5237 connector->encoder_ids[i],
5238 DRM_MODE_OBJECT_ENCODER);
5242 encoder = obj_to_encoder(obj);
5249 * set vga decode state - true == enable VGA decode
5251 int intel_modeset_vga_set_state(struct drm_device *dev, bool state)
5253 struct drm_i915_private *dev_priv = dev->dev_private;
5256 pci_read_config_word(dev_priv->bridge_dev, INTEL_GMCH_CTRL, &gmch_ctrl);
5258 gmch_ctrl &= ~INTEL_GMCH_VGA_DISABLE;
5260 gmch_ctrl |= INTEL_GMCH_VGA_DISABLE;
5261 pci_write_config_word(dev_priv->bridge_dev, INTEL_GMCH_CTRL, gmch_ctrl);