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>
31 #include <linux/slab.h>
33 #include "intel_drv.h"
36 #include "drm_dp_helper.h"
38 #include "drm_crtc_helper.h"
40 #define HAS_eDP (intel_pipe_has_type(crtc, INTEL_OUTPUT_EDP))
42 bool intel_pipe_has_type (struct drm_crtc *crtc, int type);
43 static void intel_update_watermarks(struct drm_device *dev);
44 static void intel_increase_pllclock(struct drm_crtc *crtc, bool schedule);
67 #define INTEL_P2_NUM 2
68 typedef struct intel_limit intel_limit_t;
70 intel_range_t dot, vco, n, m, m1, m2, p, p1;
72 bool (* find_pll)(const intel_limit_t *, struct drm_crtc *,
73 int, int, intel_clock_t *);
76 #define I8XX_DOT_MIN 25000
77 #define I8XX_DOT_MAX 350000
78 #define I8XX_VCO_MIN 930000
79 #define I8XX_VCO_MAX 1400000
83 #define I8XX_M_MAX 140
84 #define I8XX_M1_MIN 18
85 #define I8XX_M1_MAX 26
87 #define I8XX_M2_MAX 16
89 #define I8XX_P_MAX 128
91 #define I8XX_P1_MAX 33
92 #define I8XX_P1_LVDS_MIN 1
93 #define I8XX_P1_LVDS_MAX 6
94 #define I8XX_P2_SLOW 4
95 #define I8XX_P2_FAST 2
96 #define I8XX_P2_LVDS_SLOW 14
97 #define I8XX_P2_LVDS_FAST 7
98 #define I8XX_P2_SLOW_LIMIT 165000
100 #define I9XX_DOT_MIN 20000
101 #define I9XX_DOT_MAX 400000
102 #define I9XX_VCO_MIN 1400000
103 #define I9XX_VCO_MAX 2800000
104 #define PINEVIEW_VCO_MIN 1700000
105 #define PINEVIEW_VCO_MAX 3500000
108 /* Pineview's Ncounter is a ring counter */
109 #define PINEVIEW_N_MIN 3
110 #define PINEVIEW_N_MAX 6
111 #define I9XX_M_MIN 70
112 #define I9XX_M_MAX 120
113 #define PINEVIEW_M_MIN 2
114 #define PINEVIEW_M_MAX 256
115 #define I9XX_M1_MIN 10
116 #define I9XX_M1_MAX 22
117 #define I9XX_M2_MIN 5
118 #define I9XX_M2_MAX 9
119 /* Pineview M1 is reserved, and must be 0 */
120 #define PINEVIEW_M1_MIN 0
121 #define PINEVIEW_M1_MAX 0
122 #define PINEVIEW_M2_MIN 0
123 #define PINEVIEW_M2_MAX 254
124 #define I9XX_P_SDVO_DAC_MIN 5
125 #define I9XX_P_SDVO_DAC_MAX 80
126 #define I9XX_P_LVDS_MIN 7
127 #define I9XX_P_LVDS_MAX 98
128 #define PINEVIEW_P_LVDS_MIN 7
129 #define PINEVIEW_P_LVDS_MAX 112
130 #define I9XX_P1_MIN 1
131 #define I9XX_P1_MAX 8
132 #define I9XX_P2_SDVO_DAC_SLOW 10
133 #define I9XX_P2_SDVO_DAC_FAST 5
134 #define I9XX_P2_SDVO_DAC_SLOW_LIMIT 200000
135 #define I9XX_P2_LVDS_SLOW 14
136 #define I9XX_P2_LVDS_FAST 7
137 #define I9XX_P2_LVDS_SLOW_LIMIT 112000
139 /*The parameter is for SDVO on G4x platform*/
140 #define G4X_DOT_SDVO_MIN 25000
141 #define G4X_DOT_SDVO_MAX 270000
142 #define G4X_VCO_MIN 1750000
143 #define G4X_VCO_MAX 3500000
144 #define G4X_N_SDVO_MIN 1
145 #define G4X_N_SDVO_MAX 4
146 #define G4X_M_SDVO_MIN 104
147 #define G4X_M_SDVO_MAX 138
148 #define G4X_M1_SDVO_MIN 17
149 #define G4X_M1_SDVO_MAX 23
150 #define G4X_M2_SDVO_MIN 5
151 #define G4X_M2_SDVO_MAX 11
152 #define G4X_P_SDVO_MIN 10
153 #define G4X_P_SDVO_MAX 30
154 #define G4X_P1_SDVO_MIN 1
155 #define G4X_P1_SDVO_MAX 3
156 #define G4X_P2_SDVO_SLOW 10
157 #define G4X_P2_SDVO_FAST 10
158 #define G4X_P2_SDVO_LIMIT 270000
160 /*The parameter is for HDMI_DAC on G4x platform*/
161 #define G4X_DOT_HDMI_DAC_MIN 22000
162 #define G4X_DOT_HDMI_DAC_MAX 400000
163 #define G4X_N_HDMI_DAC_MIN 1
164 #define G4X_N_HDMI_DAC_MAX 4
165 #define G4X_M_HDMI_DAC_MIN 104
166 #define G4X_M_HDMI_DAC_MAX 138
167 #define G4X_M1_HDMI_DAC_MIN 16
168 #define G4X_M1_HDMI_DAC_MAX 23
169 #define G4X_M2_HDMI_DAC_MIN 5
170 #define G4X_M2_HDMI_DAC_MAX 11
171 #define G4X_P_HDMI_DAC_MIN 5
172 #define G4X_P_HDMI_DAC_MAX 80
173 #define G4X_P1_HDMI_DAC_MIN 1
174 #define G4X_P1_HDMI_DAC_MAX 8
175 #define G4X_P2_HDMI_DAC_SLOW 10
176 #define G4X_P2_HDMI_DAC_FAST 5
177 #define G4X_P2_HDMI_DAC_LIMIT 165000
179 /*The parameter is for SINGLE_CHANNEL_LVDS on G4x platform*/
180 #define G4X_DOT_SINGLE_CHANNEL_LVDS_MIN 20000
181 #define G4X_DOT_SINGLE_CHANNEL_LVDS_MAX 115000
182 #define G4X_N_SINGLE_CHANNEL_LVDS_MIN 1
183 #define G4X_N_SINGLE_CHANNEL_LVDS_MAX 3
184 #define G4X_M_SINGLE_CHANNEL_LVDS_MIN 104
185 #define G4X_M_SINGLE_CHANNEL_LVDS_MAX 138
186 #define G4X_M1_SINGLE_CHANNEL_LVDS_MIN 17
187 #define G4X_M1_SINGLE_CHANNEL_LVDS_MAX 23
188 #define G4X_M2_SINGLE_CHANNEL_LVDS_MIN 5
189 #define G4X_M2_SINGLE_CHANNEL_LVDS_MAX 11
190 #define G4X_P_SINGLE_CHANNEL_LVDS_MIN 28
191 #define G4X_P_SINGLE_CHANNEL_LVDS_MAX 112
192 #define G4X_P1_SINGLE_CHANNEL_LVDS_MIN 2
193 #define G4X_P1_SINGLE_CHANNEL_LVDS_MAX 8
194 #define G4X_P2_SINGLE_CHANNEL_LVDS_SLOW 14
195 #define G4X_P2_SINGLE_CHANNEL_LVDS_FAST 14
196 #define G4X_P2_SINGLE_CHANNEL_LVDS_LIMIT 0
198 /*The parameter is for DUAL_CHANNEL_LVDS on G4x platform*/
199 #define G4X_DOT_DUAL_CHANNEL_LVDS_MIN 80000
200 #define G4X_DOT_DUAL_CHANNEL_LVDS_MAX 224000
201 #define G4X_N_DUAL_CHANNEL_LVDS_MIN 1
202 #define G4X_N_DUAL_CHANNEL_LVDS_MAX 3
203 #define G4X_M_DUAL_CHANNEL_LVDS_MIN 104
204 #define G4X_M_DUAL_CHANNEL_LVDS_MAX 138
205 #define G4X_M1_DUAL_CHANNEL_LVDS_MIN 17
206 #define G4X_M1_DUAL_CHANNEL_LVDS_MAX 23
207 #define G4X_M2_DUAL_CHANNEL_LVDS_MIN 5
208 #define G4X_M2_DUAL_CHANNEL_LVDS_MAX 11
209 #define G4X_P_DUAL_CHANNEL_LVDS_MIN 14
210 #define G4X_P_DUAL_CHANNEL_LVDS_MAX 42
211 #define G4X_P1_DUAL_CHANNEL_LVDS_MIN 2
212 #define G4X_P1_DUAL_CHANNEL_LVDS_MAX 6
213 #define G4X_P2_DUAL_CHANNEL_LVDS_SLOW 7
214 #define G4X_P2_DUAL_CHANNEL_LVDS_FAST 7
215 #define G4X_P2_DUAL_CHANNEL_LVDS_LIMIT 0
217 /*The parameter is for DISPLAY PORT on G4x platform*/
218 #define G4X_DOT_DISPLAY_PORT_MIN 161670
219 #define G4X_DOT_DISPLAY_PORT_MAX 227000
220 #define G4X_N_DISPLAY_PORT_MIN 1
221 #define G4X_N_DISPLAY_PORT_MAX 2
222 #define G4X_M_DISPLAY_PORT_MIN 97
223 #define G4X_M_DISPLAY_PORT_MAX 108
224 #define G4X_M1_DISPLAY_PORT_MIN 0x10
225 #define G4X_M1_DISPLAY_PORT_MAX 0x12
226 #define G4X_M2_DISPLAY_PORT_MIN 0x05
227 #define G4X_M2_DISPLAY_PORT_MAX 0x06
228 #define G4X_P_DISPLAY_PORT_MIN 10
229 #define G4X_P_DISPLAY_PORT_MAX 20
230 #define G4X_P1_DISPLAY_PORT_MIN 1
231 #define G4X_P1_DISPLAY_PORT_MAX 2
232 #define G4X_P2_DISPLAY_PORT_SLOW 10
233 #define G4X_P2_DISPLAY_PORT_FAST 10
234 #define G4X_P2_DISPLAY_PORT_LIMIT 0
236 /* Ironlake / Sandybridge */
237 /* as we calculate clock using (register_value + 2) for
238 N/M1/M2, so here the range value for them is (actual_value-2).
240 #define IRONLAKE_DOT_MIN 25000
241 #define IRONLAKE_DOT_MAX 350000
242 #define IRONLAKE_VCO_MIN 1760000
243 #define IRONLAKE_VCO_MAX 3510000
244 #define IRONLAKE_M1_MIN 12
245 #define IRONLAKE_M1_MAX 22
246 #define IRONLAKE_M2_MIN 5
247 #define IRONLAKE_M2_MAX 9
248 #define IRONLAKE_P2_DOT_LIMIT 225000 /* 225Mhz */
250 /* We have parameter ranges for different type of outputs. */
252 /* DAC & HDMI Refclk 120Mhz */
253 #define IRONLAKE_DAC_N_MIN 1
254 #define IRONLAKE_DAC_N_MAX 5
255 #define IRONLAKE_DAC_M_MIN 79
256 #define IRONLAKE_DAC_M_MAX 127
257 #define IRONLAKE_DAC_P_MIN 5
258 #define IRONLAKE_DAC_P_MAX 80
259 #define IRONLAKE_DAC_P1_MIN 1
260 #define IRONLAKE_DAC_P1_MAX 8
261 #define IRONLAKE_DAC_P2_SLOW 10
262 #define IRONLAKE_DAC_P2_FAST 5
264 /* LVDS single-channel 120Mhz refclk */
265 #define IRONLAKE_LVDS_S_N_MIN 1
266 #define IRONLAKE_LVDS_S_N_MAX 3
267 #define IRONLAKE_LVDS_S_M_MIN 79
268 #define IRONLAKE_LVDS_S_M_MAX 118
269 #define IRONLAKE_LVDS_S_P_MIN 28
270 #define IRONLAKE_LVDS_S_P_MAX 112
271 #define IRONLAKE_LVDS_S_P1_MIN 2
272 #define IRONLAKE_LVDS_S_P1_MAX 8
273 #define IRONLAKE_LVDS_S_P2_SLOW 14
274 #define IRONLAKE_LVDS_S_P2_FAST 14
276 /* LVDS dual-channel 120Mhz refclk */
277 #define IRONLAKE_LVDS_D_N_MIN 1
278 #define IRONLAKE_LVDS_D_N_MAX 3
279 #define IRONLAKE_LVDS_D_M_MIN 79
280 #define IRONLAKE_LVDS_D_M_MAX 127
281 #define IRONLAKE_LVDS_D_P_MIN 14
282 #define IRONLAKE_LVDS_D_P_MAX 56
283 #define IRONLAKE_LVDS_D_P1_MIN 2
284 #define IRONLAKE_LVDS_D_P1_MAX 8
285 #define IRONLAKE_LVDS_D_P2_SLOW 7
286 #define IRONLAKE_LVDS_D_P2_FAST 7
288 /* LVDS single-channel 100Mhz refclk */
289 #define IRONLAKE_LVDS_S_SSC_N_MIN 1
290 #define IRONLAKE_LVDS_S_SSC_N_MAX 2
291 #define IRONLAKE_LVDS_S_SSC_M_MIN 79
292 #define IRONLAKE_LVDS_S_SSC_M_MAX 126
293 #define IRONLAKE_LVDS_S_SSC_P_MIN 28
294 #define IRONLAKE_LVDS_S_SSC_P_MAX 112
295 #define IRONLAKE_LVDS_S_SSC_P1_MIN 2
296 #define IRONLAKE_LVDS_S_SSC_P1_MAX 8
297 #define IRONLAKE_LVDS_S_SSC_P2_SLOW 14
298 #define IRONLAKE_LVDS_S_SSC_P2_FAST 14
300 /* LVDS dual-channel 100Mhz refclk */
301 #define IRONLAKE_LVDS_D_SSC_N_MIN 1
302 #define IRONLAKE_LVDS_D_SSC_N_MAX 3
303 #define IRONLAKE_LVDS_D_SSC_M_MIN 79
304 #define IRONLAKE_LVDS_D_SSC_M_MAX 126
305 #define IRONLAKE_LVDS_D_SSC_P_MIN 14
306 #define IRONLAKE_LVDS_D_SSC_P_MAX 42
307 #define IRONLAKE_LVDS_D_SSC_P1_MIN 2
308 #define IRONLAKE_LVDS_D_SSC_P1_MAX 6
309 #define IRONLAKE_LVDS_D_SSC_P2_SLOW 7
310 #define IRONLAKE_LVDS_D_SSC_P2_FAST 7
313 #define IRONLAKE_DP_N_MIN 1
314 #define IRONLAKE_DP_N_MAX 2
315 #define IRONLAKE_DP_M_MIN 81
316 #define IRONLAKE_DP_M_MAX 90
317 #define IRONLAKE_DP_P_MIN 10
318 #define IRONLAKE_DP_P_MAX 20
319 #define IRONLAKE_DP_P2_FAST 10
320 #define IRONLAKE_DP_P2_SLOW 10
321 #define IRONLAKE_DP_P2_LIMIT 0
322 #define IRONLAKE_DP_P1_MIN 1
323 #define IRONLAKE_DP_P1_MAX 2
326 intel_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
327 int target, int refclk, intel_clock_t *best_clock);
329 intel_g4x_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
330 int target, int refclk, intel_clock_t *best_clock);
333 intel_find_pll_g4x_dp(const intel_limit_t *, struct drm_crtc *crtc,
334 int target, int refclk, intel_clock_t *best_clock);
336 intel_find_pll_ironlake_dp(const intel_limit_t *, struct drm_crtc *crtc,
337 int target, int refclk, intel_clock_t *best_clock);
339 static const intel_limit_t intel_limits_i8xx_dvo = {
340 .dot = { .min = I8XX_DOT_MIN, .max = I8XX_DOT_MAX },
341 .vco = { .min = I8XX_VCO_MIN, .max = I8XX_VCO_MAX },
342 .n = { .min = I8XX_N_MIN, .max = I8XX_N_MAX },
343 .m = { .min = I8XX_M_MIN, .max = I8XX_M_MAX },
344 .m1 = { .min = I8XX_M1_MIN, .max = I8XX_M1_MAX },
345 .m2 = { .min = I8XX_M2_MIN, .max = I8XX_M2_MAX },
346 .p = { .min = I8XX_P_MIN, .max = I8XX_P_MAX },
347 .p1 = { .min = I8XX_P1_MIN, .max = I8XX_P1_MAX },
348 .p2 = { .dot_limit = I8XX_P2_SLOW_LIMIT,
349 .p2_slow = I8XX_P2_SLOW, .p2_fast = I8XX_P2_FAST },
350 .find_pll = intel_find_best_PLL,
353 static const intel_limit_t intel_limits_i8xx_lvds = {
354 .dot = { .min = I8XX_DOT_MIN, .max = I8XX_DOT_MAX },
355 .vco = { .min = I8XX_VCO_MIN, .max = I8XX_VCO_MAX },
356 .n = { .min = I8XX_N_MIN, .max = I8XX_N_MAX },
357 .m = { .min = I8XX_M_MIN, .max = I8XX_M_MAX },
358 .m1 = { .min = I8XX_M1_MIN, .max = I8XX_M1_MAX },
359 .m2 = { .min = I8XX_M2_MIN, .max = I8XX_M2_MAX },
360 .p = { .min = I8XX_P_MIN, .max = I8XX_P_MAX },
361 .p1 = { .min = I8XX_P1_LVDS_MIN, .max = I8XX_P1_LVDS_MAX },
362 .p2 = { .dot_limit = I8XX_P2_SLOW_LIMIT,
363 .p2_slow = I8XX_P2_LVDS_SLOW, .p2_fast = I8XX_P2_LVDS_FAST },
364 .find_pll = intel_find_best_PLL,
367 static const intel_limit_t intel_limits_i9xx_sdvo = {
368 .dot = { .min = I9XX_DOT_MIN, .max = I9XX_DOT_MAX },
369 .vco = { .min = I9XX_VCO_MIN, .max = I9XX_VCO_MAX },
370 .n = { .min = I9XX_N_MIN, .max = I9XX_N_MAX },
371 .m = { .min = I9XX_M_MIN, .max = I9XX_M_MAX },
372 .m1 = { .min = I9XX_M1_MIN, .max = I9XX_M1_MAX },
373 .m2 = { .min = I9XX_M2_MIN, .max = I9XX_M2_MAX },
374 .p = { .min = I9XX_P_SDVO_DAC_MIN, .max = I9XX_P_SDVO_DAC_MAX },
375 .p1 = { .min = I9XX_P1_MIN, .max = I9XX_P1_MAX },
376 .p2 = { .dot_limit = I9XX_P2_SDVO_DAC_SLOW_LIMIT,
377 .p2_slow = I9XX_P2_SDVO_DAC_SLOW, .p2_fast = I9XX_P2_SDVO_DAC_FAST },
378 .find_pll = intel_find_best_PLL,
381 static const intel_limit_t intel_limits_i9xx_lvds = {
382 .dot = { .min = I9XX_DOT_MIN, .max = I9XX_DOT_MAX },
383 .vco = { .min = I9XX_VCO_MIN, .max = I9XX_VCO_MAX },
384 .n = { .min = I9XX_N_MIN, .max = I9XX_N_MAX },
385 .m = { .min = I9XX_M_MIN, .max = I9XX_M_MAX },
386 .m1 = { .min = I9XX_M1_MIN, .max = I9XX_M1_MAX },
387 .m2 = { .min = I9XX_M2_MIN, .max = I9XX_M2_MAX },
388 .p = { .min = I9XX_P_LVDS_MIN, .max = I9XX_P_LVDS_MAX },
389 .p1 = { .min = I9XX_P1_MIN, .max = I9XX_P1_MAX },
390 /* The single-channel range is 25-112Mhz, and dual-channel
391 * is 80-224Mhz. Prefer single channel as much as possible.
393 .p2 = { .dot_limit = I9XX_P2_LVDS_SLOW_LIMIT,
394 .p2_slow = I9XX_P2_LVDS_SLOW, .p2_fast = I9XX_P2_LVDS_FAST },
395 .find_pll = intel_find_best_PLL,
398 /* below parameter and function is for G4X Chipset Family*/
399 static const intel_limit_t intel_limits_g4x_sdvo = {
400 .dot = { .min = G4X_DOT_SDVO_MIN, .max = G4X_DOT_SDVO_MAX },
401 .vco = { .min = G4X_VCO_MIN, .max = G4X_VCO_MAX},
402 .n = { .min = G4X_N_SDVO_MIN, .max = G4X_N_SDVO_MAX },
403 .m = { .min = G4X_M_SDVO_MIN, .max = G4X_M_SDVO_MAX },
404 .m1 = { .min = G4X_M1_SDVO_MIN, .max = G4X_M1_SDVO_MAX },
405 .m2 = { .min = G4X_M2_SDVO_MIN, .max = G4X_M2_SDVO_MAX },
406 .p = { .min = G4X_P_SDVO_MIN, .max = G4X_P_SDVO_MAX },
407 .p1 = { .min = G4X_P1_SDVO_MIN, .max = G4X_P1_SDVO_MAX},
408 .p2 = { .dot_limit = G4X_P2_SDVO_LIMIT,
409 .p2_slow = G4X_P2_SDVO_SLOW,
410 .p2_fast = G4X_P2_SDVO_FAST
412 .find_pll = intel_g4x_find_best_PLL,
415 static const intel_limit_t intel_limits_g4x_hdmi = {
416 .dot = { .min = G4X_DOT_HDMI_DAC_MIN, .max = G4X_DOT_HDMI_DAC_MAX },
417 .vco = { .min = G4X_VCO_MIN, .max = G4X_VCO_MAX},
418 .n = { .min = G4X_N_HDMI_DAC_MIN, .max = G4X_N_HDMI_DAC_MAX },
419 .m = { .min = G4X_M_HDMI_DAC_MIN, .max = G4X_M_HDMI_DAC_MAX },
420 .m1 = { .min = G4X_M1_HDMI_DAC_MIN, .max = G4X_M1_HDMI_DAC_MAX },
421 .m2 = { .min = G4X_M2_HDMI_DAC_MIN, .max = G4X_M2_HDMI_DAC_MAX },
422 .p = { .min = G4X_P_HDMI_DAC_MIN, .max = G4X_P_HDMI_DAC_MAX },
423 .p1 = { .min = G4X_P1_HDMI_DAC_MIN, .max = G4X_P1_HDMI_DAC_MAX},
424 .p2 = { .dot_limit = G4X_P2_HDMI_DAC_LIMIT,
425 .p2_slow = G4X_P2_HDMI_DAC_SLOW,
426 .p2_fast = G4X_P2_HDMI_DAC_FAST
428 .find_pll = intel_g4x_find_best_PLL,
431 static const intel_limit_t intel_limits_g4x_single_channel_lvds = {
432 .dot = { .min = G4X_DOT_SINGLE_CHANNEL_LVDS_MIN,
433 .max = G4X_DOT_SINGLE_CHANNEL_LVDS_MAX },
434 .vco = { .min = G4X_VCO_MIN,
435 .max = G4X_VCO_MAX },
436 .n = { .min = G4X_N_SINGLE_CHANNEL_LVDS_MIN,
437 .max = G4X_N_SINGLE_CHANNEL_LVDS_MAX },
438 .m = { .min = G4X_M_SINGLE_CHANNEL_LVDS_MIN,
439 .max = G4X_M_SINGLE_CHANNEL_LVDS_MAX },
440 .m1 = { .min = G4X_M1_SINGLE_CHANNEL_LVDS_MIN,
441 .max = G4X_M1_SINGLE_CHANNEL_LVDS_MAX },
442 .m2 = { .min = G4X_M2_SINGLE_CHANNEL_LVDS_MIN,
443 .max = G4X_M2_SINGLE_CHANNEL_LVDS_MAX },
444 .p = { .min = G4X_P_SINGLE_CHANNEL_LVDS_MIN,
445 .max = G4X_P_SINGLE_CHANNEL_LVDS_MAX },
446 .p1 = { .min = G4X_P1_SINGLE_CHANNEL_LVDS_MIN,
447 .max = G4X_P1_SINGLE_CHANNEL_LVDS_MAX },
448 .p2 = { .dot_limit = G4X_P2_SINGLE_CHANNEL_LVDS_LIMIT,
449 .p2_slow = G4X_P2_SINGLE_CHANNEL_LVDS_SLOW,
450 .p2_fast = G4X_P2_SINGLE_CHANNEL_LVDS_FAST
452 .find_pll = intel_g4x_find_best_PLL,
455 static const intel_limit_t intel_limits_g4x_dual_channel_lvds = {
456 .dot = { .min = G4X_DOT_DUAL_CHANNEL_LVDS_MIN,
457 .max = G4X_DOT_DUAL_CHANNEL_LVDS_MAX },
458 .vco = { .min = G4X_VCO_MIN,
459 .max = G4X_VCO_MAX },
460 .n = { .min = G4X_N_DUAL_CHANNEL_LVDS_MIN,
461 .max = G4X_N_DUAL_CHANNEL_LVDS_MAX },
462 .m = { .min = G4X_M_DUAL_CHANNEL_LVDS_MIN,
463 .max = G4X_M_DUAL_CHANNEL_LVDS_MAX },
464 .m1 = { .min = G4X_M1_DUAL_CHANNEL_LVDS_MIN,
465 .max = G4X_M1_DUAL_CHANNEL_LVDS_MAX },
466 .m2 = { .min = G4X_M2_DUAL_CHANNEL_LVDS_MIN,
467 .max = G4X_M2_DUAL_CHANNEL_LVDS_MAX },
468 .p = { .min = G4X_P_DUAL_CHANNEL_LVDS_MIN,
469 .max = G4X_P_DUAL_CHANNEL_LVDS_MAX },
470 .p1 = { .min = G4X_P1_DUAL_CHANNEL_LVDS_MIN,
471 .max = G4X_P1_DUAL_CHANNEL_LVDS_MAX },
472 .p2 = { .dot_limit = G4X_P2_DUAL_CHANNEL_LVDS_LIMIT,
473 .p2_slow = G4X_P2_DUAL_CHANNEL_LVDS_SLOW,
474 .p2_fast = G4X_P2_DUAL_CHANNEL_LVDS_FAST
476 .find_pll = intel_g4x_find_best_PLL,
479 static const intel_limit_t intel_limits_g4x_display_port = {
480 .dot = { .min = G4X_DOT_DISPLAY_PORT_MIN,
481 .max = G4X_DOT_DISPLAY_PORT_MAX },
482 .vco = { .min = G4X_VCO_MIN,
484 .n = { .min = G4X_N_DISPLAY_PORT_MIN,
485 .max = G4X_N_DISPLAY_PORT_MAX },
486 .m = { .min = G4X_M_DISPLAY_PORT_MIN,
487 .max = G4X_M_DISPLAY_PORT_MAX },
488 .m1 = { .min = G4X_M1_DISPLAY_PORT_MIN,
489 .max = G4X_M1_DISPLAY_PORT_MAX },
490 .m2 = { .min = G4X_M2_DISPLAY_PORT_MIN,
491 .max = G4X_M2_DISPLAY_PORT_MAX },
492 .p = { .min = G4X_P_DISPLAY_PORT_MIN,
493 .max = G4X_P_DISPLAY_PORT_MAX },
494 .p1 = { .min = G4X_P1_DISPLAY_PORT_MIN,
495 .max = G4X_P1_DISPLAY_PORT_MAX},
496 .p2 = { .dot_limit = G4X_P2_DISPLAY_PORT_LIMIT,
497 .p2_slow = G4X_P2_DISPLAY_PORT_SLOW,
498 .p2_fast = G4X_P2_DISPLAY_PORT_FAST },
499 .find_pll = intel_find_pll_g4x_dp,
502 static const intel_limit_t intel_limits_pineview_sdvo = {
503 .dot = { .min = I9XX_DOT_MIN, .max = I9XX_DOT_MAX},
504 .vco = { .min = PINEVIEW_VCO_MIN, .max = PINEVIEW_VCO_MAX },
505 .n = { .min = PINEVIEW_N_MIN, .max = PINEVIEW_N_MAX },
506 .m = { .min = PINEVIEW_M_MIN, .max = PINEVIEW_M_MAX },
507 .m1 = { .min = PINEVIEW_M1_MIN, .max = PINEVIEW_M1_MAX },
508 .m2 = { .min = PINEVIEW_M2_MIN, .max = PINEVIEW_M2_MAX },
509 .p = { .min = I9XX_P_SDVO_DAC_MIN, .max = I9XX_P_SDVO_DAC_MAX },
510 .p1 = { .min = I9XX_P1_MIN, .max = I9XX_P1_MAX },
511 .p2 = { .dot_limit = I9XX_P2_SDVO_DAC_SLOW_LIMIT,
512 .p2_slow = I9XX_P2_SDVO_DAC_SLOW, .p2_fast = I9XX_P2_SDVO_DAC_FAST },
513 .find_pll = intel_find_best_PLL,
516 static const intel_limit_t intel_limits_pineview_lvds = {
517 .dot = { .min = I9XX_DOT_MIN, .max = I9XX_DOT_MAX },
518 .vco = { .min = PINEVIEW_VCO_MIN, .max = PINEVIEW_VCO_MAX },
519 .n = { .min = PINEVIEW_N_MIN, .max = PINEVIEW_N_MAX },
520 .m = { .min = PINEVIEW_M_MIN, .max = PINEVIEW_M_MAX },
521 .m1 = { .min = PINEVIEW_M1_MIN, .max = PINEVIEW_M1_MAX },
522 .m2 = { .min = PINEVIEW_M2_MIN, .max = PINEVIEW_M2_MAX },
523 .p = { .min = PINEVIEW_P_LVDS_MIN, .max = PINEVIEW_P_LVDS_MAX },
524 .p1 = { .min = I9XX_P1_MIN, .max = I9XX_P1_MAX },
525 /* Pineview only supports single-channel mode. */
526 .p2 = { .dot_limit = I9XX_P2_LVDS_SLOW_LIMIT,
527 .p2_slow = I9XX_P2_LVDS_SLOW, .p2_fast = I9XX_P2_LVDS_SLOW },
528 .find_pll = intel_find_best_PLL,
531 static const intel_limit_t intel_limits_ironlake_dac = {
532 .dot = { .min = IRONLAKE_DOT_MIN, .max = IRONLAKE_DOT_MAX },
533 .vco = { .min = IRONLAKE_VCO_MIN, .max = IRONLAKE_VCO_MAX },
534 .n = { .min = IRONLAKE_DAC_N_MIN, .max = IRONLAKE_DAC_N_MAX },
535 .m = { .min = IRONLAKE_DAC_M_MIN, .max = IRONLAKE_DAC_M_MAX },
536 .m1 = { .min = IRONLAKE_M1_MIN, .max = IRONLAKE_M1_MAX },
537 .m2 = { .min = IRONLAKE_M2_MIN, .max = IRONLAKE_M2_MAX },
538 .p = { .min = IRONLAKE_DAC_P_MIN, .max = IRONLAKE_DAC_P_MAX },
539 .p1 = { .min = IRONLAKE_DAC_P1_MIN, .max = IRONLAKE_DAC_P1_MAX },
540 .p2 = { .dot_limit = IRONLAKE_P2_DOT_LIMIT,
541 .p2_slow = IRONLAKE_DAC_P2_SLOW,
542 .p2_fast = IRONLAKE_DAC_P2_FAST },
543 .find_pll = intel_g4x_find_best_PLL,
546 static const intel_limit_t intel_limits_ironlake_single_lvds = {
547 .dot = { .min = IRONLAKE_DOT_MIN, .max = IRONLAKE_DOT_MAX },
548 .vco = { .min = IRONLAKE_VCO_MIN, .max = IRONLAKE_VCO_MAX },
549 .n = { .min = IRONLAKE_LVDS_S_N_MIN, .max = IRONLAKE_LVDS_S_N_MAX },
550 .m = { .min = IRONLAKE_LVDS_S_M_MIN, .max = IRONLAKE_LVDS_S_M_MAX },
551 .m1 = { .min = IRONLAKE_M1_MIN, .max = IRONLAKE_M1_MAX },
552 .m2 = { .min = IRONLAKE_M2_MIN, .max = IRONLAKE_M2_MAX },
553 .p = { .min = IRONLAKE_LVDS_S_P_MIN, .max = IRONLAKE_LVDS_S_P_MAX },
554 .p1 = { .min = IRONLAKE_LVDS_S_P1_MIN, .max = IRONLAKE_LVDS_S_P1_MAX },
555 .p2 = { .dot_limit = IRONLAKE_P2_DOT_LIMIT,
556 .p2_slow = IRONLAKE_LVDS_S_P2_SLOW,
557 .p2_fast = IRONLAKE_LVDS_S_P2_FAST },
558 .find_pll = intel_g4x_find_best_PLL,
561 static const intel_limit_t intel_limits_ironlake_dual_lvds = {
562 .dot = { .min = IRONLAKE_DOT_MIN, .max = IRONLAKE_DOT_MAX },
563 .vco = { .min = IRONLAKE_VCO_MIN, .max = IRONLAKE_VCO_MAX },
564 .n = { .min = IRONLAKE_LVDS_D_N_MIN, .max = IRONLAKE_LVDS_D_N_MAX },
565 .m = { .min = IRONLAKE_LVDS_D_M_MIN, .max = IRONLAKE_LVDS_D_M_MAX },
566 .m1 = { .min = IRONLAKE_M1_MIN, .max = IRONLAKE_M1_MAX },
567 .m2 = { .min = IRONLAKE_M2_MIN, .max = IRONLAKE_M2_MAX },
568 .p = { .min = IRONLAKE_LVDS_D_P_MIN, .max = IRONLAKE_LVDS_D_P_MAX },
569 .p1 = { .min = IRONLAKE_LVDS_D_P1_MIN, .max = IRONLAKE_LVDS_D_P1_MAX },
570 .p2 = { .dot_limit = IRONLAKE_P2_DOT_LIMIT,
571 .p2_slow = IRONLAKE_LVDS_D_P2_SLOW,
572 .p2_fast = IRONLAKE_LVDS_D_P2_FAST },
573 .find_pll = intel_g4x_find_best_PLL,
576 static const intel_limit_t intel_limits_ironlake_single_lvds_100m = {
577 .dot = { .min = IRONLAKE_DOT_MIN, .max = IRONLAKE_DOT_MAX },
578 .vco = { .min = IRONLAKE_VCO_MIN, .max = IRONLAKE_VCO_MAX },
579 .n = { .min = IRONLAKE_LVDS_S_SSC_N_MIN, .max = IRONLAKE_LVDS_S_SSC_N_MAX },
580 .m = { .min = IRONLAKE_LVDS_S_SSC_M_MIN, .max = IRONLAKE_LVDS_S_SSC_M_MAX },
581 .m1 = { .min = IRONLAKE_M1_MIN, .max = IRONLAKE_M1_MAX },
582 .m2 = { .min = IRONLAKE_M2_MIN, .max = IRONLAKE_M2_MAX },
583 .p = { .min = IRONLAKE_LVDS_S_SSC_P_MIN, .max = IRONLAKE_LVDS_S_SSC_P_MAX },
584 .p1 = { .min = IRONLAKE_LVDS_S_SSC_P1_MIN,.max = IRONLAKE_LVDS_S_SSC_P1_MAX },
585 .p2 = { .dot_limit = IRONLAKE_P2_DOT_LIMIT,
586 .p2_slow = IRONLAKE_LVDS_S_SSC_P2_SLOW,
587 .p2_fast = IRONLAKE_LVDS_S_SSC_P2_FAST },
588 .find_pll = intel_g4x_find_best_PLL,
591 static const intel_limit_t intel_limits_ironlake_dual_lvds_100m = {
592 .dot = { .min = IRONLAKE_DOT_MIN, .max = IRONLAKE_DOT_MAX },
593 .vco = { .min = IRONLAKE_VCO_MIN, .max = IRONLAKE_VCO_MAX },
594 .n = { .min = IRONLAKE_LVDS_D_SSC_N_MIN, .max = IRONLAKE_LVDS_D_SSC_N_MAX },
595 .m = { .min = IRONLAKE_LVDS_D_SSC_M_MIN, .max = IRONLAKE_LVDS_D_SSC_M_MAX },
596 .m1 = { .min = IRONLAKE_M1_MIN, .max = IRONLAKE_M1_MAX },
597 .m2 = { .min = IRONLAKE_M2_MIN, .max = IRONLAKE_M2_MAX },
598 .p = { .min = IRONLAKE_LVDS_D_SSC_P_MIN, .max = IRONLAKE_LVDS_D_SSC_P_MAX },
599 .p1 = { .min = IRONLAKE_LVDS_D_SSC_P1_MIN,.max = IRONLAKE_LVDS_D_SSC_P1_MAX },
600 .p2 = { .dot_limit = IRONLAKE_P2_DOT_LIMIT,
601 .p2_slow = IRONLAKE_LVDS_D_SSC_P2_SLOW,
602 .p2_fast = IRONLAKE_LVDS_D_SSC_P2_FAST },
603 .find_pll = intel_g4x_find_best_PLL,
606 static const intel_limit_t intel_limits_ironlake_display_port = {
607 .dot = { .min = IRONLAKE_DOT_MIN,
608 .max = IRONLAKE_DOT_MAX },
609 .vco = { .min = IRONLAKE_VCO_MIN,
610 .max = IRONLAKE_VCO_MAX},
611 .n = { .min = IRONLAKE_DP_N_MIN,
612 .max = IRONLAKE_DP_N_MAX },
613 .m = { .min = IRONLAKE_DP_M_MIN,
614 .max = IRONLAKE_DP_M_MAX },
615 .m1 = { .min = IRONLAKE_M1_MIN,
616 .max = IRONLAKE_M1_MAX },
617 .m2 = { .min = IRONLAKE_M2_MIN,
618 .max = IRONLAKE_M2_MAX },
619 .p = { .min = IRONLAKE_DP_P_MIN,
620 .max = IRONLAKE_DP_P_MAX },
621 .p1 = { .min = IRONLAKE_DP_P1_MIN,
622 .max = IRONLAKE_DP_P1_MAX},
623 .p2 = { .dot_limit = IRONLAKE_DP_P2_LIMIT,
624 .p2_slow = IRONLAKE_DP_P2_SLOW,
625 .p2_fast = IRONLAKE_DP_P2_FAST },
626 .find_pll = intel_find_pll_ironlake_dp,
629 static const intel_limit_t *intel_ironlake_limit(struct drm_crtc *crtc)
631 struct drm_device *dev = crtc->dev;
632 struct drm_i915_private *dev_priv = dev->dev_private;
633 const intel_limit_t *limit;
636 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
637 if (dev_priv->lvds_use_ssc && dev_priv->lvds_ssc_freq == 100)
640 if ((I915_READ(PCH_LVDS) & LVDS_CLKB_POWER_MASK) ==
641 LVDS_CLKB_POWER_UP) {
642 /* LVDS dual channel */
644 limit = &intel_limits_ironlake_dual_lvds_100m;
646 limit = &intel_limits_ironlake_dual_lvds;
649 limit = &intel_limits_ironlake_single_lvds_100m;
651 limit = &intel_limits_ironlake_single_lvds;
653 } else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT) ||
655 limit = &intel_limits_ironlake_display_port;
657 limit = &intel_limits_ironlake_dac;
662 static const intel_limit_t *intel_g4x_limit(struct drm_crtc *crtc)
664 struct drm_device *dev = crtc->dev;
665 struct drm_i915_private *dev_priv = dev->dev_private;
666 const intel_limit_t *limit;
668 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
669 if ((I915_READ(LVDS) & LVDS_CLKB_POWER_MASK) ==
671 /* LVDS with dual channel */
672 limit = &intel_limits_g4x_dual_channel_lvds;
674 /* LVDS with dual channel */
675 limit = &intel_limits_g4x_single_channel_lvds;
676 } else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI) ||
677 intel_pipe_has_type(crtc, INTEL_OUTPUT_ANALOG)) {
678 limit = &intel_limits_g4x_hdmi;
679 } else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_SDVO)) {
680 limit = &intel_limits_g4x_sdvo;
681 } else if (intel_pipe_has_type (crtc, INTEL_OUTPUT_DISPLAYPORT)) {
682 limit = &intel_limits_g4x_display_port;
683 } else /* The option is for other outputs */
684 limit = &intel_limits_i9xx_sdvo;
689 static const intel_limit_t *intel_limit(struct drm_crtc *crtc)
691 struct drm_device *dev = crtc->dev;
692 const intel_limit_t *limit;
694 if (HAS_PCH_SPLIT(dev))
695 limit = intel_ironlake_limit(crtc);
696 else if (IS_G4X(dev)) {
697 limit = intel_g4x_limit(crtc);
698 } else if (IS_I9XX(dev) && !IS_PINEVIEW(dev)) {
699 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
700 limit = &intel_limits_i9xx_lvds;
702 limit = &intel_limits_i9xx_sdvo;
703 } else if (IS_PINEVIEW(dev)) {
704 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
705 limit = &intel_limits_pineview_lvds;
707 limit = &intel_limits_pineview_sdvo;
709 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
710 limit = &intel_limits_i8xx_lvds;
712 limit = &intel_limits_i8xx_dvo;
717 /* m1 is reserved as 0 in Pineview, n is a ring counter */
718 static void pineview_clock(int refclk, intel_clock_t *clock)
720 clock->m = clock->m2 + 2;
721 clock->p = clock->p1 * clock->p2;
722 clock->vco = refclk * clock->m / clock->n;
723 clock->dot = clock->vco / clock->p;
726 static void intel_clock(struct drm_device *dev, int refclk, intel_clock_t *clock)
728 if (IS_PINEVIEW(dev)) {
729 pineview_clock(refclk, clock);
732 clock->m = 5 * (clock->m1 + 2) + (clock->m2 + 2);
733 clock->p = clock->p1 * clock->p2;
734 clock->vco = refclk * clock->m / (clock->n + 2);
735 clock->dot = clock->vco / clock->p;
739 * Returns whether any output on the specified pipe is of the specified type
741 bool intel_pipe_has_type (struct drm_crtc *crtc, int type)
743 struct drm_device *dev = crtc->dev;
744 struct drm_mode_config *mode_config = &dev->mode_config;
745 struct drm_encoder *l_entry;
747 list_for_each_entry(l_entry, &mode_config->encoder_list, head) {
748 if (l_entry && l_entry->crtc == crtc) {
749 struct intel_encoder *intel_encoder = enc_to_intel_encoder(l_entry);
750 if (intel_encoder->type == type)
757 #define INTELPllInvalid(s) do { /* DRM_DEBUG(s); */ return false; } while (0)
759 * Returns whether the given set of divisors are valid for a given refclk with
760 * the given connectors.
763 static bool intel_PLL_is_valid(struct drm_crtc *crtc, intel_clock_t *clock)
765 const intel_limit_t *limit = intel_limit (crtc);
766 struct drm_device *dev = crtc->dev;
768 if (clock->p1 < limit->p1.min || limit->p1.max < clock->p1)
769 INTELPllInvalid ("p1 out of range\n");
770 if (clock->p < limit->p.min || limit->p.max < clock->p)
771 INTELPllInvalid ("p out of range\n");
772 if (clock->m2 < limit->m2.min || limit->m2.max < clock->m2)
773 INTELPllInvalid ("m2 out of range\n");
774 if (clock->m1 < limit->m1.min || limit->m1.max < clock->m1)
775 INTELPllInvalid ("m1 out of range\n");
776 if (clock->m1 <= clock->m2 && !IS_PINEVIEW(dev))
777 INTELPllInvalid ("m1 <= m2\n");
778 if (clock->m < limit->m.min || limit->m.max < clock->m)
779 INTELPllInvalid ("m out of range\n");
780 if (clock->n < limit->n.min || limit->n.max < clock->n)
781 INTELPllInvalid ("n out of range\n");
782 if (clock->vco < limit->vco.min || limit->vco.max < clock->vco)
783 INTELPllInvalid ("vco out of range\n");
784 /* XXX: We may need to be checking "Dot clock" depending on the multiplier,
785 * connector, etc., rather than just a single range.
787 if (clock->dot < limit->dot.min || limit->dot.max < clock->dot)
788 INTELPllInvalid ("dot out of range\n");
794 intel_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
795 int target, int refclk, intel_clock_t *best_clock)
798 struct drm_device *dev = crtc->dev;
799 struct drm_i915_private *dev_priv = dev->dev_private;
803 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) &&
804 (I915_READ(LVDS)) != 0) {
806 * For LVDS, if the panel is on, just rely on its current
807 * settings for dual-channel. We haven't figured out how to
808 * reliably set up different single/dual channel state, if we
811 if ((I915_READ(LVDS) & LVDS_CLKB_POWER_MASK) ==
813 clock.p2 = limit->p2.p2_fast;
815 clock.p2 = limit->p2.p2_slow;
817 if (target < limit->p2.dot_limit)
818 clock.p2 = limit->p2.p2_slow;
820 clock.p2 = limit->p2.p2_fast;
823 memset (best_clock, 0, sizeof (*best_clock));
825 for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max;
827 for (clock.m2 = limit->m2.min;
828 clock.m2 <= limit->m2.max; clock.m2++) {
829 /* m1 is always 0 in Pineview */
830 if (clock.m2 >= clock.m1 && !IS_PINEVIEW(dev))
832 for (clock.n = limit->n.min;
833 clock.n <= limit->n.max; clock.n++) {
834 for (clock.p1 = limit->p1.min;
835 clock.p1 <= limit->p1.max; clock.p1++) {
838 intel_clock(dev, refclk, &clock);
840 if (!intel_PLL_is_valid(crtc, &clock))
843 this_err = abs(clock.dot - target);
844 if (this_err < err) {
853 return (err != target);
857 intel_g4x_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
858 int target, int refclk, intel_clock_t *best_clock)
860 struct drm_device *dev = crtc->dev;
861 struct drm_i915_private *dev_priv = dev->dev_private;
865 /* approximately equals target * 0.00488 */
866 int err_most = (target >> 8) + (target >> 10);
869 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
872 if (HAS_PCH_SPLIT(dev))
876 if ((I915_READ(lvds_reg) & LVDS_CLKB_POWER_MASK) ==
878 clock.p2 = limit->p2.p2_fast;
880 clock.p2 = limit->p2.p2_slow;
882 if (target < limit->p2.dot_limit)
883 clock.p2 = limit->p2.p2_slow;
885 clock.p2 = limit->p2.p2_fast;
888 memset(best_clock, 0, sizeof(*best_clock));
889 max_n = limit->n.max;
890 /* based on hardware requirement, prefer smaller n to precision */
891 for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) {
892 /* based on hardware requirement, prefere larger m1,m2 */
893 for (clock.m1 = limit->m1.max;
894 clock.m1 >= limit->m1.min; clock.m1--) {
895 for (clock.m2 = limit->m2.max;
896 clock.m2 >= limit->m2.min; clock.m2--) {
897 for (clock.p1 = limit->p1.max;
898 clock.p1 >= limit->p1.min; clock.p1--) {
901 intel_clock(dev, refclk, &clock);
902 if (!intel_PLL_is_valid(crtc, &clock))
904 this_err = abs(clock.dot - target) ;
905 if (this_err < err_most) {
919 intel_find_pll_ironlake_dp(const intel_limit_t *limit, struct drm_crtc *crtc,
920 int target, int refclk, intel_clock_t *best_clock)
922 struct drm_device *dev = crtc->dev;
925 /* return directly when it is eDP */
929 if (target < 200000) {
942 intel_clock(dev, refclk, &clock);
943 memcpy(best_clock, &clock, sizeof(intel_clock_t));
947 /* DisplayPort has only two frequencies, 162MHz and 270MHz */
949 intel_find_pll_g4x_dp(const intel_limit_t *limit, struct drm_crtc *crtc,
950 int target, int refclk, intel_clock_t *best_clock)
953 if (target < 200000) {
966 clock.m = 5 * (clock.m1 + 2) + (clock.m2 + 2);
967 clock.p = (clock.p1 * clock.p2);
968 clock.dot = 96000 * clock.m / (clock.n + 2) / clock.p;
970 memcpy(best_clock, &clock, sizeof(intel_clock_t));
975 intel_wait_for_vblank(struct drm_device *dev)
977 /* Wait for 20ms, i.e. one cycle at 50hz. */
981 /* Parameters have changed, update FBC info */
982 static void i8xx_enable_fbc(struct drm_crtc *crtc, unsigned long interval)
984 struct drm_device *dev = crtc->dev;
985 struct drm_i915_private *dev_priv = dev->dev_private;
986 struct drm_framebuffer *fb = crtc->fb;
987 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
988 struct drm_i915_gem_object *obj_priv = to_intel_bo(intel_fb->obj);
989 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
991 u32 fbc_ctl, fbc_ctl2;
993 dev_priv->cfb_pitch = dev_priv->cfb_size / FBC_LL_SIZE;
995 if (fb->pitch < dev_priv->cfb_pitch)
996 dev_priv->cfb_pitch = fb->pitch;
998 /* FBC_CTL wants 64B units */
999 dev_priv->cfb_pitch = (dev_priv->cfb_pitch / 64) - 1;
1000 dev_priv->cfb_fence = obj_priv->fence_reg;
1001 dev_priv->cfb_plane = intel_crtc->plane;
1002 plane = dev_priv->cfb_plane == 0 ? FBC_CTL_PLANEA : FBC_CTL_PLANEB;
1004 /* Clear old tags */
1005 for (i = 0; i < (FBC_LL_SIZE / 32) + 1; i++)
1006 I915_WRITE(FBC_TAG + (i * 4), 0);
1009 fbc_ctl2 = FBC_CTL_FENCE_DBL | FBC_CTL_IDLE_IMM | plane;
1010 if (obj_priv->tiling_mode != I915_TILING_NONE)
1011 fbc_ctl2 |= FBC_CTL_CPU_FENCE;
1012 I915_WRITE(FBC_CONTROL2, fbc_ctl2);
1013 I915_WRITE(FBC_FENCE_OFF, crtc->y);
1016 fbc_ctl = FBC_CTL_EN | FBC_CTL_PERIODIC;
1018 fbc_ctl |= FBC_CTL_C3_IDLE; /* 945 needs special SR handling */
1019 fbc_ctl |= (dev_priv->cfb_pitch & 0xff) << FBC_CTL_STRIDE_SHIFT;
1020 fbc_ctl |= (interval & 0x2fff) << FBC_CTL_INTERVAL_SHIFT;
1021 if (obj_priv->tiling_mode != I915_TILING_NONE)
1022 fbc_ctl |= dev_priv->cfb_fence;
1023 I915_WRITE(FBC_CONTROL, fbc_ctl);
1025 DRM_DEBUG_KMS("enabled FBC, pitch %ld, yoff %d, plane %d, ",
1026 dev_priv->cfb_pitch, crtc->y, dev_priv->cfb_plane);
1029 void i8xx_disable_fbc(struct drm_device *dev)
1031 struct drm_i915_private *dev_priv = dev->dev_private;
1032 unsigned long timeout = jiffies + msecs_to_jiffies(1);
1035 if (!I915_HAS_FBC(dev))
1038 if (!(I915_READ(FBC_CONTROL) & FBC_CTL_EN))
1039 return; /* Already off, just return */
1041 /* Disable compression */
1042 fbc_ctl = I915_READ(FBC_CONTROL);
1043 fbc_ctl &= ~FBC_CTL_EN;
1044 I915_WRITE(FBC_CONTROL, fbc_ctl);
1046 /* Wait for compressing bit to clear */
1047 while (I915_READ(FBC_STATUS) & FBC_STAT_COMPRESSING) {
1048 if (time_after(jiffies, timeout)) {
1049 DRM_DEBUG_DRIVER("FBC idle timed out\n");
1055 intel_wait_for_vblank(dev);
1057 DRM_DEBUG_KMS("disabled FBC\n");
1060 static bool i8xx_fbc_enabled(struct drm_device *dev)
1062 struct drm_i915_private *dev_priv = dev->dev_private;
1064 return I915_READ(FBC_CONTROL) & FBC_CTL_EN;
1067 static void g4x_enable_fbc(struct drm_crtc *crtc, unsigned long interval)
1069 struct drm_device *dev = crtc->dev;
1070 struct drm_i915_private *dev_priv = dev->dev_private;
1071 struct drm_framebuffer *fb = crtc->fb;
1072 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
1073 struct drm_i915_gem_object *obj_priv = to_intel_bo(intel_fb->obj);
1074 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1075 int plane = (intel_crtc->plane == 0 ? DPFC_CTL_PLANEA :
1077 unsigned long stall_watermark = 200;
1080 dev_priv->cfb_pitch = (dev_priv->cfb_pitch / 64) - 1;
1081 dev_priv->cfb_fence = obj_priv->fence_reg;
1082 dev_priv->cfb_plane = intel_crtc->plane;
1084 dpfc_ctl = plane | DPFC_SR_EN | DPFC_CTL_LIMIT_1X;
1085 if (obj_priv->tiling_mode != I915_TILING_NONE) {
1086 dpfc_ctl |= DPFC_CTL_FENCE_EN | dev_priv->cfb_fence;
1087 I915_WRITE(DPFC_CHICKEN, DPFC_HT_MODIFY);
1089 I915_WRITE(DPFC_CHICKEN, ~DPFC_HT_MODIFY);
1092 I915_WRITE(DPFC_CONTROL, dpfc_ctl);
1093 I915_WRITE(DPFC_RECOMP_CTL, DPFC_RECOMP_STALL_EN |
1094 (stall_watermark << DPFC_RECOMP_STALL_WM_SHIFT) |
1095 (interval << DPFC_RECOMP_TIMER_COUNT_SHIFT));
1096 I915_WRITE(DPFC_FENCE_YOFF, crtc->y);
1099 I915_WRITE(DPFC_CONTROL, I915_READ(DPFC_CONTROL) | DPFC_CTL_EN);
1101 DRM_DEBUG_KMS("enabled fbc on plane %d\n", intel_crtc->plane);
1104 void g4x_disable_fbc(struct drm_device *dev)
1106 struct drm_i915_private *dev_priv = dev->dev_private;
1109 /* Disable compression */
1110 dpfc_ctl = I915_READ(DPFC_CONTROL);
1111 dpfc_ctl &= ~DPFC_CTL_EN;
1112 I915_WRITE(DPFC_CONTROL, dpfc_ctl);
1113 intel_wait_for_vblank(dev);
1115 DRM_DEBUG_KMS("disabled FBC\n");
1118 static bool g4x_fbc_enabled(struct drm_device *dev)
1120 struct drm_i915_private *dev_priv = dev->dev_private;
1122 return I915_READ(DPFC_CONTROL) & DPFC_CTL_EN;
1125 bool intel_fbc_enabled(struct drm_device *dev)
1127 struct drm_i915_private *dev_priv = dev->dev_private;
1129 if (!dev_priv->display.fbc_enabled)
1132 return dev_priv->display.fbc_enabled(dev);
1135 void intel_enable_fbc(struct drm_crtc *crtc, unsigned long interval)
1137 struct drm_i915_private *dev_priv = crtc->dev->dev_private;
1139 if (!dev_priv->display.enable_fbc)
1142 dev_priv->display.enable_fbc(crtc, interval);
1145 void intel_disable_fbc(struct drm_device *dev)
1147 struct drm_i915_private *dev_priv = dev->dev_private;
1149 if (!dev_priv->display.disable_fbc)
1152 dev_priv->display.disable_fbc(dev);
1156 * intel_update_fbc - enable/disable FBC as needed
1157 * @crtc: CRTC to point the compressor at
1158 * @mode: mode in use
1160 * Set up the framebuffer compression hardware at mode set time. We
1161 * enable it if possible:
1162 * - plane A only (on pre-965)
1163 * - no pixel mulitply/line duplication
1164 * - no alpha buffer discard
1166 * - framebuffer <= 2048 in width, 1536 in height
1168 * We can't assume that any compression will take place (worst case),
1169 * so the compressed buffer has to be the same size as the uncompressed
1170 * one. It also must reside (along with the line length buffer) in
1173 * We need to enable/disable FBC on a global basis.
1175 static void intel_update_fbc(struct drm_crtc *crtc,
1176 struct drm_display_mode *mode)
1178 struct drm_device *dev = crtc->dev;
1179 struct drm_i915_private *dev_priv = dev->dev_private;
1180 struct drm_framebuffer *fb = crtc->fb;
1181 struct intel_framebuffer *intel_fb;
1182 struct drm_i915_gem_object *obj_priv;
1183 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1184 int plane = intel_crtc->plane;
1186 if (!i915_powersave)
1189 if (!I915_HAS_FBC(dev))
1195 intel_fb = to_intel_framebuffer(fb);
1196 obj_priv = to_intel_bo(intel_fb->obj);
1199 * If FBC is already on, we just have to verify that we can
1200 * keep it that way...
1201 * Need to disable if:
1202 * - changing FBC params (stride, fence, mode)
1203 * - new fb is too large to fit in compressed buffer
1204 * - going to an unsupported config (interlace, pixel multiply, etc.)
1206 if (intel_fb->obj->size > dev_priv->cfb_size) {
1207 DRM_DEBUG_KMS("framebuffer too large, disabling "
1209 dev_priv->no_fbc_reason = FBC_STOLEN_TOO_SMALL;
1212 if ((mode->flags & DRM_MODE_FLAG_INTERLACE) ||
1213 (mode->flags & DRM_MODE_FLAG_DBLSCAN)) {
1214 DRM_DEBUG_KMS("mode incompatible with compression, "
1216 dev_priv->no_fbc_reason = FBC_UNSUPPORTED_MODE;
1219 if ((mode->hdisplay > 2048) ||
1220 (mode->vdisplay > 1536)) {
1221 DRM_DEBUG_KMS("mode too large for compression, disabling\n");
1222 dev_priv->no_fbc_reason = FBC_MODE_TOO_LARGE;
1225 if ((IS_I915GM(dev) || IS_I945GM(dev)) && plane != 0) {
1226 DRM_DEBUG_KMS("plane not 0, disabling compression\n");
1227 dev_priv->no_fbc_reason = FBC_BAD_PLANE;
1230 if (obj_priv->tiling_mode != I915_TILING_X) {
1231 DRM_DEBUG_KMS("framebuffer not tiled, disabling compression\n");
1232 dev_priv->no_fbc_reason = FBC_NOT_TILED;
1236 if (intel_fbc_enabled(dev)) {
1237 /* We can re-enable it in this case, but need to update pitch */
1238 if ((fb->pitch > dev_priv->cfb_pitch) ||
1239 (obj_priv->fence_reg != dev_priv->cfb_fence) ||
1240 (plane != dev_priv->cfb_plane))
1241 intel_disable_fbc(dev);
1244 /* Now try to turn it back on if possible */
1245 if (!intel_fbc_enabled(dev))
1246 intel_enable_fbc(crtc, 500);
1251 DRM_DEBUG_KMS("unsupported config, disabling FBC\n");
1252 /* Multiple disables should be harmless */
1253 if (intel_fbc_enabled(dev))
1254 intel_disable_fbc(dev);
1258 intel_pin_and_fence_fb_obj(struct drm_device *dev, struct drm_gem_object *obj)
1260 struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
1264 switch (obj_priv->tiling_mode) {
1265 case I915_TILING_NONE:
1266 alignment = 64 * 1024;
1269 /* pin() will align the object as required by fence */
1273 /* FIXME: Is this true? */
1274 DRM_ERROR("Y tiled not allowed for scan out buffers\n");
1280 ret = i915_gem_object_pin(obj, alignment);
1284 /* Install a fence for tiled scan-out. Pre-i965 always needs a
1285 * fence, whereas 965+ only requires a fence if using
1286 * framebuffer compression. For simplicity, we always install
1287 * a fence as the cost is not that onerous.
1289 if (obj_priv->fence_reg == I915_FENCE_REG_NONE &&
1290 obj_priv->tiling_mode != I915_TILING_NONE) {
1291 ret = i915_gem_object_get_fence_reg(obj);
1293 i915_gem_object_unpin(obj);
1302 intel_pipe_set_base(struct drm_crtc *crtc, int x, int y,
1303 struct drm_framebuffer *old_fb)
1305 struct drm_device *dev = crtc->dev;
1306 struct drm_i915_private *dev_priv = dev->dev_private;
1307 struct drm_i915_master_private *master_priv;
1308 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1309 struct intel_framebuffer *intel_fb;
1310 struct drm_i915_gem_object *obj_priv;
1311 struct drm_gem_object *obj;
1312 int pipe = intel_crtc->pipe;
1313 int plane = intel_crtc->plane;
1314 unsigned long Start, Offset;
1315 int dspbase = (plane == 0 ? DSPAADDR : DSPBADDR);
1316 int dspsurf = (plane == 0 ? DSPASURF : DSPBSURF);
1317 int dspstride = (plane == 0) ? DSPASTRIDE : DSPBSTRIDE;
1318 int dsptileoff = (plane == 0 ? DSPATILEOFF : DSPBTILEOFF);
1319 int dspcntr_reg = (plane == 0) ? DSPACNTR : DSPBCNTR;
1325 DRM_DEBUG_KMS("No FB bound\n");
1334 DRM_ERROR("Can't update plane %d in SAREA\n", plane);
1338 intel_fb = to_intel_framebuffer(crtc->fb);
1339 obj = intel_fb->obj;
1340 obj_priv = to_intel_bo(obj);
1342 mutex_lock(&dev->struct_mutex);
1343 ret = intel_pin_and_fence_fb_obj(dev, obj);
1345 mutex_unlock(&dev->struct_mutex);
1349 ret = i915_gem_object_set_to_display_plane(obj);
1351 i915_gem_object_unpin(obj);
1352 mutex_unlock(&dev->struct_mutex);
1356 dspcntr = I915_READ(dspcntr_reg);
1357 /* Mask out pixel format bits in case we change it */
1358 dspcntr &= ~DISPPLANE_PIXFORMAT_MASK;
1359 switch (crtc->fb->bits_per_pixel) {
1361 dspcntr |= DISPPLANE_8BPP;
1364 if (crtc->fb->depth == 15)
1365 dspcntr |= DISPPLANE_15_16BPP;
1367 dspcntr |= DISPPLANE_16BPP;
1371 if (crtc->fb->depth == 30)
1372 dspcntr |= DISPPLANE_32BPP_30BIT_NO_ALPHA;
1374 dspcntr |= DISPPLANE_32BPP_NO_ALPHA;
1377 DRM_ERROR("Unknown color depth\n");
1378 i915_gem_object_unpin(obj);
1379 mutex_unlock(&dev->struct_mutex);
1382 if (IS_I965G(dev)) {
1383 if (obj_priv->tiling_mode != I915_TILING_NONE)
1384 dspcntr |= DISPPLANE_TILED;
1386 dspcntr &= ~DISPPLANE_TILED;
1389 if (HAS_PCH_SPLIT(dev))
1391 dspcntr |= DISPPLANE_TRICKLE_FEED_DISABLE;
1393 I915_WRITE(dspcntr_reg, dspcntr);
1395 Start = obj_priv->gtt_offset;
1396 Offset = y * crtc->fb->pitch + x * (crtc->fb->bits_per_pixel / 8);
1398 DRM_DEBUG_KMS("Writing base %08lX %08lX %d %d\n", Start, Offset, x, y);
1399 I915_WRITE(dspstride, crtc->fb->pitch);
1400 if (IS_I965G(dev)) {
1401 I915_WRITE(dspbase, Offset);
1403 I915_WRITE(dspsurf, Start);
1405 I915_WRITE(dsptileoff, (y << 16) | x);
1407 I915_WRITE(dspbase, Start + Offset);
1411 if ((IS_I965G(dev) || plane == 0))
1412 intel_update_fbc(crtc, &crtc->mode);
1414 intel_wait_for_vblank(dev);
1417 intel_fb = to_intel_framebuffer(old_fb);
1418 obj_priv = to_intel_bo(intel_fb->obj);
1419 i915_gem_object_unpin(intel_fb->obj);
1421 intel_increase_pllclock(crtc, true);
1423 mutex_unlock(&dev->struct_mutex);
1425 if (!dev->primary->master)
1428 master_priv = dev->primary->master->driver_priv;
1429 if (!master_priv->sarea_priv)
1433 master_priv->sarea_priv->pipeB_x = x;
1434 master_priv->sarea_priv->pipeB_y = y;
1436 master_priv->sarea_priv->pipeA_x = x;
1437 master_priv->sarea_priv->pipeA_y = y;
1443 /* Disable the VGA plane that we never use */
1444 static void i915_disable_vga (struct drm_device *dev)
1446 struct drm_i915_private *dev_priv = dev->dev_private;
1450 if (HAS_PCH_SPLIT(dev))
1451 vga_reg = CPU_VGACNTRL;
1455 if (I915_READ(vga_reg) & VGA_DISP_DISABLE)
1458 I915_WRITE8(VGA_SR_INDEX, 1);
1459 sr1 = I915_READ8(VGA_SR_DATA);
1460 I915_WRITE8(VGA_SR_DATA, sr1 | (1 << 5));
1463 I915_WRITE(vga_reg, VGA_DISP_DISABLE);
1466 static void ironlake_disable_pll_edp (struct drm_crtc *crtc)
1468 struct drm_device *dev = crtc->dev;
1469 struct drm_i915_private *dev_priv = dev->dev_private;
1472 DRM_DEBUG_KMS("\n");
1473 dpa_ctl = I915_READ(DP_A);
1474 dpa_ctl &= ~DP_PLL_ENABLE;
1475 I915_WRITE(DP_A, dpa_ctl);
1478 static void ironlake_enable_pll_edp (struct drm_crtc *crtc)
1480 struct drm_device *dev = crtc->dev;
1481 struct drm_i915_private *dev_priv = dev->dev_private;
1484 dpa_ctl = I915_READ(DP_A);
1485 dpa_ctl |= DP_PLL_ENABLE;
1486 I915_WRITE(DP_A, dpa_ctl);
1491 static void ironlake_set_pll_edp (struct drm_crtc *crtc, int clock)
1493 struct drm_device *dev = crtc->dev;
1494 struct drm_i915_private *dev_priv = dev->dev_private;
1497 DRM_DEBUG_KMS("eDP PLL enable for clock %d\n", clock);
1498 dpa_ctl = I915_READ(DP_A);
1499 dpa_ctl &= ~DP_PLL_FREQ_MASK;
1501 if (clock < 200000) {
1503 dpa_ctl |= DP_PLL_FREQ_160MHZ;
1504 /* workaround for 160Mhz:
1505 1) program 0x4600c bits 15:0 = 0x8124
1506 2) program 0x46010 bit 0 = 1
1507 3) program 0x46034 bit 24 = 1
1508 4) program 0x64000 bit 14 = 1
1510 temp = I915_READ(0x4600c);
1512 I915_WRITE(0x4600c, temp | 0x8124);
1514 temp = I915_READ(0x46010);
1515 I915_WRITE(0x46010, temp | 1);
1517 temp = I915_READ(0x46034);
1518 I915_WRITE(0x46034, temp | (1 << 24));
1520 dpa_ctl |= DP_PLL_FREQ_270MHZ;
1522 I915_WRITE(DP_A, dpa_ctl);
1527 /* The FDI link training functions for ILK/Ibexpeak. */
1528 static void ironlake_fdi_link_train(struct drm_crtc *crtc)
1530 struct drm_device *dev = crtc->dev;
1531 struct drm_i915_private *dev_priv = dev->dev_private;
1532 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1533 int pipe = intel_crtc->pipe;
1534 int fdi_tx_reg = (pipe == 0) ? FDI_TXA_CTL : FDI_TXB_CTL;
1535 int fdi_rx_reg = (pipe == 0) ? FDI_RXA_CTL : FDI_RXB_CTL;
1536 int fdi_rx_iir_reg = (pipe == 0) ? FDI_RXA_IIR : FDI_RXB_IIR;
1537 int fdi_rx_imr_reg = (pipe == 0) ? FDI_RXA_IMR : FDI_RXB_IMR;
1538 u32 temp, tries = 0;
1540 /* enable CPU FDI TX and PCH FDI RX */
1541 temp = I915_READ(fdi_tx_reg);
1542 temp |= FDI_TX_ENABLE;
1544 temp |= (intel_crtc->fdi_lanes - 1) << 19;
1545 temp &= ~FDI_LINK_TRAIN_NONE;
1546 temp |= FDI_LINK_TRAIN_PATTERN_1;
1547 I915_WRITE(fdi_tx_reg, temp);
1548 I915_READ(fdi_tx_reg);
1550 temp = I915_READ(fdi_rx_reg);
1551 temp &= ~FDI_LINK_TRAIN_NONE;
1552 temp |= FDI_LINK_TRAIN_PATTERN_1;
1553 I915_WRITE(fdi_rx_reg, temp | FDI_RX_ENABLE);
1554 I915_READ(fdi_rx_reg);
1557 /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
1559 temp = I915_READ(fdi_rx_imr_reg);
1560 temp &= ~FDI_RX_SYMBOL_LOCK;
1561 temp &= ~FDI_RX_BIT_LOCK;
1562 I915_WRITE(fdi_rx_imr_reg, temp);
1563 I915_READ(fdi_rx_imr_reg);
1567 temp = I915_READ(fdi_rx_iir_reg);
1568 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
1570 if ((temp & FDI_RX_BIT_LOCK)) {
1571 DRM_DEBUG_KMS("FDI train 1 done.\n");
1572 I915_WRITE(fdi_rx_iir_reg,
1573 temp | FDI_RX_BIT_LOCK);
1580 DRM_DEBUG_KMS("FDI train 1 fail!\n");
1586 temp = I915_READ(fdi_tx_reg);
1587 temp &= ~FDI_LINK_TRAIN_NONE;
1588 temp |= FDI_LINK_TRAIN_PATTERN_2;
1589 I915_WRITE(fdi_tx_reg, temp);
1591 temp = I915_READ(fdi_rx_reg);
1592 temp &= ~FDI_LINK_TRAIN_NONE;
1593 temp |= FDI_LINK_TRAIN_PATTERN_2;
1594 I915_WRITE(fdi_rx_reg, temp);
1600 temp = I915_READ(fdi_rx_iir_reg);
1601 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
1603 if (temp & FDI_RX_SYMBOL_LOCK) {
1604 I915_WRITE(fdi_rx_iir_reg,
1605 temp | FDI_RX_SYMBOL_LOCK);
1606 DRM_DEBUG_KMS("FDI train 2 done.\n");
1613 DRM_DEBUG_KMS("FDI train 2 fail!\n");
1618 DRM_DEBUG_KMS("FDI train done\n");
1621 static int snb_b_fdi_train_param [] = {
1622 FDI_LINK_TRAIN_400MV_0DB_SNB_B,
1623 FDI_LINK_TRAIN_400MV_6DB_SNB_B,
1624 FDI_LINK_TRAIN_600MV_3_5DB_SNB_B,
1625 FDI_LINK_TRAIN_800MV_0DB_SNB_B,
1628 /* The FDI link training functions for SNB/Cougarpoint. */
1629 static void gen6_fdi_link_train(struct drm_crtc *crtc)
1631 struct drm_device *dev = crtc->dev;
1632 struct drm_i915_private *dev_priv = dev->dev_private;
1633 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1634 int pipe = intel_crtc->pipe;
1635 int fdi_tx_reg = (pipe == 0) ? FDI_TXA_CTL : FDI_TXB_CTL;
1636 int fdi_rx_reg = (pipe == 0) ? FDI_RXA_CTL : FDI_RXB_CTL;
1637 int fdi_rx_iir_reg = (pipe == 0) ? FDI_RXA_IIR : FDI_RXB_IIR;
1638 int fdi_rx_imr_reg = (pipe == 0) ? FDI_RXA_IMR : FDI_RXB_IMR;
1641 /* enable CPU FDI TX and PCH FDI RX */
1642 temp = I915_READ(fdi_tx_reg);
1643 temp |= FDI_TX_ENABLE;
1645 temp |= (intel_crtc->fdi_lanes - 1) << 19;
1646 temp &= ~FDI_LINK_TRAIN_NONE;
1647 temp |= FDI_LINK_TRAIN_PATTERN_1;
1648 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
1650 temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
1651 I915_WRITE(fdi_tx_reg, temp);
1652 I915_READ(fdi_tx_reg);
1654 temp = I915_READ(fdi_rx_reg);
1655 if (HAS_PCH_CPT(dev)) {
1656 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
1657 temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
1659 temp &= ~FDI_LINK_TRAIN_NONE;
1660 temp |= FDI_LINK_TRAIN_PATTERN_1;
1662 I915_WRITE(fdi_rx_reg, temp | FDI_RX_ENABLE);
1663 I915_READ(fdi_rx_reg);
1666 /* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
1668 temp = I915_READ(fdi_rx_imr_reg);
1669 temp &= ~FDI_RX_SYMBOL_LOCK;
1670 temp &= ~FDI_RX_BIT_LOCK;
1671 I915_WRITE(fdi_rx_imr_reg, temp);
1672 I915_READ(fdi_rx_imr_reg);
1675 for (i = 0; i < 4; i++ ) {
1676 temp = I915_READ(fdi_tx_reg);
1677 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
1678 temp |= snb_b_fdi_train_param[i];
1679 I915_WRITE(fdi_tx_reg, temp);
1682 temp = I915_READ(fdi_rx_iir_reg);
1683 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
1685 if (temp & FDI_RX_BIT_LOCK) {
1686 I915_WRITE(fdi_rx_iir_reg,
1687 temp | FDI_RX_BIT_LOCK);
1688 DRM_DEBUG_KMS("FDI train 1 done.\n");
1693 DRM_DEBUG_KMS("FDI train 1 fail!\n");
1696 temp = I915_READ(fdi_tx_reg);
1697 temp &= ~FDI_LINK_TRAIN_NONE;
1698 temp |= FDI_LINK_TRAIN_PATTERN_2;
1700 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
1702 temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
1704 I915_WRITE(fdi_tx_reg, temp);
1706 temp = I915_READ(fdi_rx_reg);
1707 if (HAS_PCH_CPT(dev)) {
1708 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
1709 temp |= FDI_LINK_TRAIN_PATTERN_2_CPT;
1711 temp &= ~FDI_LINK_TRAIN_NONE;
1712 temp |= FDI_LINK_TRAIN_PATTERN_2;
1714 I915_WRITE(fdi_rx_reg, temp);
1717 for (i = 0; i < 4; i++ ) {
1718 temp = I915_READ(fdi_tx_reg);
1719 temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
1720 temp |= snb_b_fdi_train_param[i];
1721 I915_WRITE(fdi_tx_reg, temp);
1724 temp = I915_READ(fdi_rx_iir_reg);
1725 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
1727 if (temp & FDI_RX_SYMBOL_LOCK) {
1728 I915_WRITE(fdi_rx_iir_reg,
1729 temp | FDI_RX_SYMBOL_LOCK);
1730 DRM_DEBUG_KMS("FDI train 2 done.\n");
1735 DRM_DEBUG_KMS("FDI train 2 fail!\n");
1737 DRM_DEBUG_KMS("FDI train done.\n");
1740 static void ironlake_crtc_dpms(struct drm_crtc *crtc, int mode)
1742 struct drm_device *dev = crtc->dev;
1743 struct drm_i915_private *dev_priv = dev->dev_private;
1744 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1745 int pipe = intel_crtc->pipe;
1746 int plane = intel_crtc->plane;
1747 int pch_dpll_reg = (pipe == 0) ? PCH_DPLL_A : PCH_DPLL_B;
1748 int pipeconf_reg = (pipe == 0) ? PIPEACONF : PIPEBCONF;
1749 int dspcntr_reg = (plane == 0) ? DSPACNTR : DSPBCNTR;
1750 int dspbase_reg = (plane == 0) ? DSPAADDR : DSPBADDR;
1751 int fdi_tx_reg = (pipe == 0) ? FDI_TXA_CTL : FDI_TXB_CTL;
1752 int fdi_rx_reg = (pipe == 0) ? FDI_RXA_CTL : FDI_RXB_CTL;
1753 int transconf_reg = (pipe == 0) ? TRANSACONF : TRANSBCONF;
1754 int pf_ctl_reg = (pipe == 0) ? PFA_CTL_1 : PFB_CTL_1;
1755 int pf_win_size = (pipe == 0) ? PFA_WIN_SZ : PFB_WIN_SZ;
1756 int pf_win_pos = (pipe == 0) ? PFA_WIN_POS : PFB_WIN_POS;
1757 int cpu_htot_reg = (pipe == 0) ? HTOTAL_A : HTOTAL_B;
1758 int cpu_hblank_reg = (pipe == 0) ? HBLANK_A : HBLANK_B;
1759 int cpu_hsync_reg = (pipe == 0) ? HSYNC_A : HSYNC_B;
1760 int cpu_vtot_reg = (pipe == 0) ? VTOTAL_A : VTOTAL_B;
1761 int cpu_vblank_reg = (pipe == 0) ? VBLANK_A : VBLANK_B;
1762 int cpu_vsync_reg = (pipe == 0) ? VSYNC_A : VSYNC_B;
1763 int trans_htot_reg = (pipe == 0) ? TRANS_HTOTAL_A : TRANS_HTOTAL_B;
1764 int trans_hblank_reg = (pipe == 0) ? TRANS_HBLANK_A : TRANS_HBLANK_B;
1765 int trans_hsync_reg = (pipe == 0) ? TRANS_HSYNC_A : TRANS_HSYNC_B;
1766 int trans_vtot_reg = (pipe == 0) ? TRANS_VTOTAL_A : TRANS_VTOTAL_B;
1767 int trans_vblank_reg = (pipe == 0) ? TRANS_VBLANK_A : TRANS_VBLANK_B;
1768 int trans_vsync_reg = (pipe == 0) ? TRANS_VSYNC_A : TRANS_VSYNC_B;
1769 int trans_dpll_sel = (pipe == 0) ? 0 : 1;
1774 temp = I915_READ(pipeconf_reg);
1775 pipe_bpc = temp & PIPE_BPC_MASK;
1777 /* XXX: When our outputs are all unaware of DPMS modes other than off
1778 * and on, we should map those modes to DRM_MODE_DPMS_OFF in the CRTC.
1781 case DRM_MODE_DPMS_ON:
1782 case DRM_MODE_DPMS_STANDBY:
1783 case DRM_MODE_DPMS_SUSPEND:
1784 DRM_DEBUG_KMS("crtc %d dpms on\n", pipe);
1786 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
1787 temp = I915_READ(PCH_LVDS);
1788 if ((temp & LVDS_PORT_EN) == 0) {
1789 I915_WRITE(PCH_LVDS, temp | LVDS_PORT_EN);
1790 POSTING_READ(PCH_LVDS);
1795 /* enable eDP PLL */
1796 ironlake_enable_pll_edp(crtc);
1799 /* enable PCH FDI RX PLL, wait warmup plus DMI latency */
1800 temp = I915_READ(fdi_rx_reg);
1802 * make the BPC in FDI Rx be consistent with that in
1805 temp &= ~(0x7 << 16);
1806 temp |= (pipe_bpc << 11);
1808 temp |= (intel_crtc->fdi_lanes - 1) << 19;
1809 I915_WRITE(fdi_rx_reg, temp | FDI_RX_PLL_ENABLE);
1810 I915_READ(fdi_rx_reg);
1813 /* Switch from Rawclk to PCDclk */
1814 temp = I915_READ(fdi_rx_reg);
1815 I915_WRITE(fdi_rx_reg, temp | FDI_SEL_PCDCLK);
1816 I915_READ(fdi_rx_reg);
1819 /* Enable CPU FDI TX PLL, always on for Ironlake */
1820 temp = I915_READ(fdi_tx_reg);
1821 if ((temp & FDI_TX_PLL_ENABLE) == 0) {
1822 I915_WRITE(fdi_tx_reg, temp | FDI_TX_PLL_ENABLE);
1823 I915_READ(fdi_tx_reg);
1828 /* Enable panel fitting for LVDS */
1829 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
1830 temp = I915_READ(pf_ctl_reg);
1831 I915_WRITE(pf_ctl_reg, temp | PF_ENABLE | PF_FILTER_MED_3x3);
1833 /* currently full aspect */
1834 I915_WRITE(pf_win_pos, 0);
1836 I915_WRITE(pf_win_size,
1837 (dev_priv->panel_fixed_mode->hdisplay << 16) |
1838 (dev_priv->panel_fixed_mode->vdisplay));
1841 /* Enable CPU pipe */
1842 temp = I915_READ(pipeconf_reg);
1843 if ((temp & PIPEACONF_ENABLE) == 0) {
1844 I915_WRITE(pipeconf_reg, temp | PIPEACONF_ENABLE);
1845 I915_READ(pipeconf_reg);
1849 /* configure and enable CPU plane */
1850 temp = I915_READ(dspcntr_reg);
1851 if ((temp & DISPLAY_PLANE_ENABLE) == 0) {
1852 I915_WRITE(dspcntr_reg, temp | DISPLAY_PLANE_ENABLE);
1853 /* Flush the plane changes */
1854 I915_WRITE(dspbase_reg, I915_READ(dspbase_reg));
1858 /* For PCH output, training FDI link */
1860 gen6_fdi_link_train(crtc);
1862 ironlake_fdi_link_train(crtc);
1864 /* enable PCH DPLL */
1865 temp = I915_READ(pch_dpll_reg);
1866 if ((temp & DPLL_VCO_ENABLE) == 0) {
1867 I915_WRITE(pch_dpll_reg, temp | DPLL_VCO_ENABLE);
1868 I915_READ(pch_dpll_reg);
1872 if (HAS_PCH_CPT(dev)) {
1873 /* Be sure PCH DPLL SEL is set */
1874 temp = I915_READ(PCH_DPLL_SEL);
1875 if (trans_dpll_sel == 0 &&
1876 (temp & TRANSA_DPLL_ENABLE) == 0)
1877 temp |= (TRANSA_DPLL_ENABLE | TRANSA_DPLLA_SEL);
1878 else if (trans_dpll_sel == 1 &&
1879 (temp & TRANSB_DPLL_ENABLE) == 0)
1880 temp |= (TRANSB_DPLL_ENABLE | TRANSB_DPLLB_SEL);
1881 I915_WRITE(PCH_DPLL_SEL, temp);
1882 I915_READ(PCH_DPLL_SEL);
1885 /* set transcoder timing */
1886 I915_WRITE(trans_htot_reg, I915_READ(cpu_htot_reg));
1887 I915_WRITE(trans_hblank_reg, I915_READ(cpu_hblank_reg));
1888 I915_WRITE(trans_hsync_reg, I915_READ(cpu_hsync_reg));
1890 I915_WRITE(trans_vtot_reg, I915_READ(cpu_vtot_reg));
1891 I915_WRITE(trans_vblank_reg, I915_READ(cpu_vblank_reg));
1892 I915_WRITE(trans_vsync_reg, I915_READ(cpu_vsync_reg));
1894 /* enable normal train */
1895 temp = I915_READ(fdi_tx_reg);
1896 temp &= ~FDI_LINK_TRAIN_NONE;
1897 I915_WRITE(fdi_tx_reg, temp | FDI_LINK_TRAIN_NONE |
1898 FDI_TX_ENHANCE_FRAME_ENABLE);
1899 I915_READ(fdi_tx_reg);
1901 temp = I915_READ(fdi_rx_reg);
1902 if (HAS_PCH_CPT(dev)) {
1903 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
1904 temp |= FDI_LINK_TRAIN_NORMAL_CPT;
1906 temp &= ~FDI_LINK_TRAIN_NONE;
1907 temp |= FDI_LINK_TRAIN_NONE;
1909 I915_WRITE(fdi_rx_reg, temp | FDI_RX_ENHANCE_FRAME_ENABLE);
1910 I915_READ(fdi_rx_reg);
1912 /* wait one idle pattern time */
1915 /* For PCH DP, enable TRANS_DP_CTL */
1916 if (HAS_PCH_CPT(dev) &&
1917 intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT)) {
1918 int trans_dp_ctl = (pipe == 0) ? TRANS_DP_CTL_A : TRANS_DP_CTL_B;
1921 reg = I915_READ(trans_dp_ctl);
1922 reg &= ~TRANS_DP_PORT_SEL_MASK;
1923 reg = TRANS_DP_OUTPUT_ENABLE |
1924 TRANS_DP_ENH_FRAMING |
1925 TRANS_DP_VSYNC_ACTIVE_HIGH |
1926 TRANS_DP_HSYNC_ACTIVE_HIGH;
1928 switch (intel_trans_dp_port_sel(crtc)) {
1930 reg |= TRANS_DP_PORT_SEL_B;
1933 reg |= TRANS_DP_PORT_SEL_C;
1936 reg |= TRANS_DP_PORT_SEL_D;
1939 DRM_DEBUG_KMS("Wrong PCH DP port return. Guess port B\n");
1940 reg |= TRANS_DP_PORT_SEL_B;
1944 I915_WRITE(trans_dp_ctl, reg);
1945 POSTING_READ(trans_dp_ctl);
1948 /* enable PCH transcoder */
1949 temp = I915_READ(transconf_reg);
1951 * make the BPC in transcoder be consistent with
1952 * that in pipeconf reg.
1954 temp &= ~PIPE_BPC_MASK;
1956 I915_WRITE(transconf_reg, temp | TRANS_ENABLE);
1957 I915_READ(transconf_reg);
1959 while ((I915_READ(transconf_reg) & TRANS_STATE_ENABLE) == 0)
1964 intel_crtc_load_lut(crtc);
1967 case DRM_MODE_DPMS_OFF:
1968 DRM_DEBUG_KMS("crtc %d dpms off\n", pipe);
1970 drm_vblank_off(dev, pipe);
1971 /* Disable display plane */
1972 temp = I915_READ(dspcntr_reg);
1973 if ((temp & DISPLAY_PLANE_ENABLE) != 0) {
1974 I915_WRITE(dspcntr_reg, temp & ~DISPLAY_PLANE_ENABLE);
1975 /* Flush the plane changes */
1976 I915_WRITE(dspbase_reg, I915_READ(dspbase_reg));
1977 I915_READ(dspbase_reg);
1980 i915_disable_vga(dev);
1982 /* disable cpu pipe, disable after all planes disabled */
1983 temp = I915_READ(pipeconf_reg);
1984 if ((temp & PIPEACONF_ENABLE) != 0) {
1985 I915_WRITE(pipeconf_reg, temp & ~PIPEACONF_ENABLE);
1986 I915_READ(pipeconf_reg);
1988 /* wait for cpu pipe off, pipe state */
1989 while ((I915_READ(pipeconf_reg) & I965_PIPECONF_ACTIVE) != 0) {
1995 DRM_DEBUG_KMS("pipe %d off delay\n",
2001 DRM_DEBUG_KMS("crtc %d is disabled\n", pipe);
2006 temp = I915_READ(pf_ctl_reg);
2007 if ((temp & PF_ENABLE) != 0) {
2008 I915_WRITE(pf_ctl_reg, temp & ~PF_ENABLE);
2009 I915_READ(pf_ctl_reg);
2011 I915_WRITE(pf_win_size, 0);
2012 POSTING_READ(pf_win_size);
2015 /* disable CPU FDI tx and PCH FDI rx */
2016 temp = I915_READ(fdi_tx_reg);
2017 I915_WRITE(fdi_tx_reg, temp & ~FDI_TX_ENABLE);
2018 I915_READ(fdi_tx_reg);
2020 temp = I915_READ(fdi_rx_reg);
2021 /* BPC in FDI rx is consistent with that in pipeconf */
2022 temp &= ~(0x07 << 16);
2023 temp |= (pipe_bpc << 11);
2024 I915_WRITE(fdi_rx_reg, temp & ~FDI_RX_ENABLE);
2025 I915_READ(fdi_rx_reg);
2029 /* still set train pattern 1 */
2030 temp = I915_READ(fdi_tx_reg);
2031 temp &= ~FDI_LINK_TRAIN_NONE;
2032 temp |= FDI_LINK_TRAIN_PATTERN_1;
2033 I915_WRITE(fdi_tx_reg, temp);
2034 POSTING_READ(fdi_tx_reg);
2036 temp = I915_READ(fdi_rx_reg);
2037 if (HAS_PCH_CPT(dev)) {
2038 temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
2039 temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
2041 temp &= ~FDI_LINK_TRAIN_NONE;
2042 temp |= FDI_LINK_TRAIN_PATTERN_1;
2044 I915_WRITE(fdi_rx_reg, temp);
2045 POSTING_READ(fdi_rx_reg);
2049 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
2050 temp = I915_READ(PCH_LVDS);
2051 I915_WRITE(PCH_LVDS, temp & ~LVDS_PORT_EN);
2052 I915_READ(PCH_LVDS);
2056 /* disable PCH transcoder */
2057 temp = I915_READ(transconf_reg);
2058 if ((temp & TRANS_ENABLE) != 0) {
2059 I915_WRITE(transconf_reg, temp & ~TRANS_ENABLE);
2060 I915_READ(transconf_reg);
2062 /* wait for PCH transcoder off, transcoder state */
2063 while ((I915_READ(transconf_reg) & TRANS_STATE_ENABLE) != 0) {
2069 DRM_DEBUG_KMS("transcoder %d off "
2076 temp = I915_READ(transconf_reg);
2077 /* BPC in transcoder is consistent with that in pipeconf */
2078 temp &= ~PIPE_BPC_MASK;
2080 I915_WRITE(transconf_reg, temp);
2081 I915_READ(transconf_reg);
2084 if (HAS_PCH_CPT(dev)) {
2085 /* disable TRANS_DP_CTL */
2086 int trans_dp_ctl = (pipe == 0) ? TRANS_DP_CTL_A : TRANS_DP_CTL_B;
2089 reg = I915_READ(trans_dp_ctl);
2090 reg &= ~(TRANS_DP_OUTPUT_ENABLE | TRANS_DP_PORT_SEL_MASK);
2091 I915_WRITE(trans_dp_ctl, reg);
2092 POSTING_READ(trans_dp_ctl);
2094 /* disable DPLL_SEL */
2095 temp = I915_READ(PCH_DPLL_SEL);
2096 if (trans_dpll_sel == 0)
2097 temp &= ~(TRANSA_DPLL_ENABLE | TRANSA_DPLLB_SEL);
2099 temp &= ~(TRANSB_DPLL_ENABLE | TRANSB_DPLLB_SEL);
2100 I915_WRITE(PCH_DPLL_SEL, temp);
2101 I915_READ(PCH_DPLL_SEL);
2105 /* disable PCH DPLL */
2106 temp = I915_READ(pch_dpll_reg);
2107 I915_WRITE(pch_dpll_reg, temp & ~DPLL_VCO_ENABLE);
2108 I915_READ(pch_dpll_reg);
2111 ironlake_disable_pll_edp(crtc);
2114 /* Switch from PCDclk to Rawclk */
2115 temp = I915_READ(fdi_rx_reg);
2116 temp &= ~FDI_SEL_PCDCLK;
2117 I915_WRITE(fdi_rx_reg, temp);
2118 I915_READ(fdi_rx_reg);
2120 /* Disable CPU FDI TX PLL */
2121 temp = I915_READ(fdi_tx_reg);
2122 I915_WRITE(fdi_tx_reg, temp & ~FDI_TX_PLL_ENABLE);
2123 I915_READ(fdi_tx_reg);
2126 temp = I915_READ(fdi_rx_reg);
2127 temp &= ~FDI_RX_PLL_ENABLE;
2128 I915_WRITE(fdi_rx_reg, temp);
2129 I915_READ(fdi_rx_reg);
2131 /* Wait for the clocks to turn off. */
2137 static void intel_crtc_dpms_overlay(struct intel_crtc *intel_crtc, bool enable)
2139 struct intel_overlay *overlay;
2142 if (!enable && intel_crtc->overlay) {
2143 overlay = intel_crtc->overlay;
2144 mutex_lock(&overlay->dev->struct_mutex);
2146 ret = intel_overlay_switch_off(overlay);
2150 ret = intel_overlay_recover_from_interrupt(overlay, 0);
2152 /* overlay doesn't react anymore. Usually
2153 * results in a black screen and an unkillable
2156 overlay->hw_wedged = HW_WEDGED;
2160 mutex_unlock(&overlay->dev->struct_mutex);
2162 /* Let userspace switch the overlay on again. In most cases userspace
2163 * has to recompute where to put it anyway. */
2168 static void i9xx_crtc_dpms(struct drm_crtc *crtc, int mode)
2170 struct drm_device *dev = crtc->dev;
2171 struct drm_i915_private *dev_priv = dev->dev_private;
2172 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2173 int pipe = intel_crtc->pipe;
2174 int plane = intel_crtc->plane;
2175 int dpll_reg = (pipe == 0) ? DPLL_A : DPLL_B;
2176 int dspcntr_reg = (plane == 0) ? DSPACNTR : DSPBCNTR;
2177 int dspbase_reg = (plane == 0) ? DSPAADDR : DSPBADDR;
2178 int pipeconf_reg = (pipe == 0) ? PIPEACONF : PIPEBCONF;
2181 /* XXX: When our outputs are all unaware of DPMS modes other than off
2182 * and on, we should map those modes to DRM_MODE_DPMS_OFF in the CRTC.
2185 case DRM_MODE_DPMS_ON:
2186 case DRM_MODE_DPMS_STANDBY:
2187 case DRM_MODE_DPMS_SUSPEND:
2188 intel_update_watermarks(dev);
2190 /* Enable the DPLL */
2191 temp = I915_READ(dpll_reg);
2192 if ((temp & DPLL_VCO_ENABLE) == 0) {
2193 I915_WRITE(dpll_reg, temp);
2194 I915_READ(dpll_reg);
2195 /* Wait for the clocks to stabilize. */
2197 I915_WRITE(dpll_reg, temp | DPLL_VCO_ENABLE);
2198 I915_READ(dpll_reg);
2199 /* Wait for the clocks to stabilize. */
2201 I915_WRITE(dpll_reg, temp | DPLL_VCO_ENABLE);
2202 I915_READ(dpll_reg);
2203 /* Wait for the clocks to stabilize. */
2207 /* Enable the pipe */
2208 temp = I915_READ(pipeconf_reg);
2209 if ((temp & PIPEACONF_ENABLE) == 0)
2210 I915_WRITE(pipeconf_reg, temp | PIPEACONF_ENABLE);
2212 /* Enable the plane */
2213 temp = I915_READ(dspcntr_reg);
2214 if ((temp & DISPLAY_PLANE_ENABLE) == 0) {
2215 I915_WRITE(dspcntr_reg, temp | DISPLAY_PLANE_ENABLE);
2216 /* Flush the plane changes */
2217 I915_WRITE(dspbase_reg, I915_READ(dspbase_reg));
2220 intel_crtc_load_lut(crtc);
2222 if ((IS_I965G(dev) || plane == 0))
2223 intel_update_fbc(crtc, &crtc->mode);
2225 /* Give the overlay scaler a chance to enable if it's on this pipe */
2226 intel_crtc_dpms_overlay(intel_crtc, true);
2228 case DRM_MODE_DPMS_OFF:
2229 intel_update_watermarks(dev);
2231 /* Give the overlay scaler a chance to disable if it's on this pipe */
2232 intel_crtc_dpms_overlay(intel_crtc, false);
2233 drm_vblank_off(dev, pipe);
2235 if (dev_priv->cfb_plane == plane &&
2236 dev_priv->display.disable_fbc)
2237 dev_priv->display.disable_fbc(dev);
2239 /* Disable the VGA plane that we never use */
2240 i915_disable_vga(dev);
2242 /* Disable display plane */
2243 temp = I915_READ(dspcntr_reg);
2244 if ((temp & DISPLAY_PLANE_ENABLE) != 0) {
2245 I915_WRITE(dspcntr_reg, temp & ~DISPLAY_PLANE_ENABLE);
2246 /* Flush the plane changes */
2247 I915_WRITE(dspbase_reg, I915_READ(dspbase_reg));
2248 I915_READ(dspbase_reg);
2251 if (!IS_I9XX(dev)) {
2252 /* Wait for vblank for the disable to take effect */
2253 intel_wait_for_vblank(dev);
2256 /* Next, disable display pipes */
2257 temp = I915_READ(pipeconf_reg);
2258 if ((temp & PIPEACONF_ENABLE) != 0) {
2259 I915_WRITE(pipeconf_reg, temp & ~PIPEACONF_ENABLE);
2260 I915_READ(pipeconf_reg);
2263 /* Wait for vblank for the disable to take effect. */
2264 intel_wait_for_vblank(dev);
2266 temp = I915_READ(dpll_reg);
2267 if ((temp & DPLL_VCO_ENABLE) != 0) {
2268 I915_WRITE(dpll_reg, temp & ~DPLL_VCO_ENABLE);
2269 I915_READ(dpll_reg);
2272 /* Wait for the clocks to turn off. */
2279 * Sets the power management mode of the pipe and plane.
2281 * This code should probably grow support for turning the cursor off and back
2282 * on appropriately at the same time as we're turning the pipe off/on.
2284 static void intel_crtc_dpms(struct drm_crtc *crtc, int mode)
2286 struct drm_device *dev = crtc->dev;
2287 struct drm_i915_private *dev_priv = dev->dev_private;
2288 struct drm_i915_master_private *master_priv;
2289 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2290 int pipe = intel_crtc->pipe;
2293 dev_priv->display.dpms(crtc, mode);
2295 intel_crtc->dpms_mode = mode;
2297 if (!dev->primary->master)
2300 master_priv = dev->primary->master->driver_priv;
2301 if (!master_priv->sarea_priv)
2304 enabled = crtc->enabled && mode != DRM_MODE_DPMS_OFF;
2308 master_priv->sarea_priv->pipeA_w = enabled ? crtc->mode.hdisplay : 0;
2309 master_priv->sarea_priv->pipeA_h = enabled ? crtc->mode.vdisplay : 0;
2312 master_priv->sarea_priv->pipeB_w = enabled ? crtc->mode.hdisplay : 0;
2313 master_priv->sarea_priv->pipeB_h = enabled ? crtc->mode.vdisplay : 0;
2316 DRM_ERROR("Can't update pipe %d in SAREA\n", pipe);
2321 static void intel_crtc_prepare (struct drm_crtc *crtc)
2323 struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
2324 crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF);
2327 static void intel_crtc_commit (struct drm_crtc *crtc)
2329 struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
2330 crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON);
2333 void intel_encoder_prepare (struct drm_encoder *encoder)
2335 struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
2336 /* lvds has its own version of prepare see intel_lvds_prepare */
2337 encoder_funcs->dpms(encoder, DRM_MODE_DPMS_OFF);
2340 void intel_encoder_commit (struct drm_encoder *encoder)
2342 struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
2343 /* lvds has its own version of commit see intel_lvds_commit */
2344 encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON);
2347 static bool intel_crtc_mode_fixup(struct drm_crtc *crtc,
2348 struct drm_display_mode *mode,
2349 struct drm_display_mode *adjusted_mode)
2351 struct drm_device *dev = crtc->dev;
2352 if (HAS_PCH_SPLIT(dev)) {
2353 /* FDI link clock is fixed at 2.7G */
2354 if (mode->clock * 3 > 27000 * 4)
2355 return MODE_CLOCK_HIGH;
2360 static int i945_get_display_clock_speed(struct drm_device *dev)
2365 static int i915_get_display_clock_speed(struct drm_device *dev)
2370 static int i9xx_misc_get_display_clock_speed(struct drm_device *dev)
2375 static int i915gm_get_display_clock_speed(struct drm_device *dev)
2379 pci_read_config_word(dev->pdev, GCFGC, &gcfgc);
2381 if (gcfgc & GC_LOW_FREQUENCY_ENABLE)
2384 switch (gcfgc & GC_DISPLAY_CLOCK_MASK) {
2385 case GC_DISPLAY_CLOCK_333_MHZ:
2388 case GC_DISPLAY_CLOCK_190_200_MHZ:
2394 static int i865_get_display_clock_speed(struct drm_device *dev)
2399 static int i855_get_display_clock_speed(struct drm_device *dev)
2402 /* Assume that the hardware is in the high speed state. This
2403 * should be the default.
2405 switch (hpllcc & GC_CLOCK_CONTROL_MASK) {
2406 case GC_CLOCK_133_200:
2407 case GC_CLOCK_100_200:
2409 case GC_CLOCK_166_250:
2411 case GC_CLOCK_100_133:
2415 /* Shouldn't happen */
2419 static int i830_get_display_clock_speed(struct drm_device *dev)
2425 * Return the pipe currently connected to the panel fitter,
2426 * or -1 if the panel fitter is not present or not in use
2428 int intel_panel_fitter_pipe (struct drm_device *dev)
2430 struct drm_i915_private *dev_priv = dev->dev_private;
2433 /* i830 doesn't have a panel fitter */
2437 pfit_control = I915_READ(PFIT_CONTROL);
2439 /* See if the panel fitter is in use */
2440 if ((pfit_control & PFIT_ENABLE) == 0)
2443 /* 965 can place panel fitter on either pipe */
2445 return (pfit_control >> 29) & 0x3;
2447 /* older chips can only use pipe 1 */
2460 fdi_reduce_ratio(u32 *num, u32 *den)
2462 while (*num > 0xffffff || *den > 0xffffff) {
2468 #define DATA_N 0x800000
2469 #define LINK_N 0x80000
2472 ironlake_compute_m_n(int bits_per_pixel, int nlanes, int pixel_clock,
2473 int link_clock, struct fdi_m_n *m_n)
2477 m_n->tu = 64; /* default size */
2479 temp = (u64) DATA_N * pixel_clock;
2480 temp = div_u64(temp, link_clock);
2481 m_n->gmch_m = div_u64(temp * bits_per_pixel, nlanes);
2482 m_n->gmch_m >>= 3; /* convert to bytes_per_pixel */
2483 m_n->gmch_n = DATA_N;
2484 fdi_reduce_ratio(&m_n->gmch_m, &m_n->gmch_n);
2486 temp = (u64) LINK_N * pixel_clock;
2487 m_n->link_m = div_u64(temp, link_clock);
2488 m_n->link_n = LINK_N;
2489 fdi_reduce_ratio(&m_n->link_m, &m_n->link_n);
2493 struct intel_watermark_params {
2494 unsigned long fifo_size;
2495 unsigned long max_wm;
2496 unsigned long default_wm;
2497 unsigned long guard_size;
2498 unsigned long cacheline_size;
2501 /* Pineview has different values for various configs */
2502 static struct intel_watermark_params pineview_display_wm = {
2503 PINEVIEW_DISPLAY_FIFO,
2507 PINEVIEW_FIFO_LINE_SIZE
2509 static struct intel_watermark_params pineview_display_hplloff_wm = {
2510 PINEVIEW_DISPLAY_FIFO,
2512 PINEVIEW_DFT_HPLLOFF_WM,
2514 PINEVIEW_FIFO_LINE_SIZE
2516 static struct intel_watermark_params pineview_cursor_wm = {
2517 PINEVIEW_CURSOR_FIFO,
2518 PINEVIEW_CURSOR_MAX_WM,
2519 PINEVIEW_CURSOR_DFT_WM,
2520 PINEVIEW_CURSOR_GUARD_WM,
2521 PINEVIEW_FIFO_LINE_SIZE,
2523 static struct intel_watermark_params pineview_cursor_hplloff_wm = {
2524 PINEVIEW_CURSOR_FIFO,
2525 PINEVIEW_CURSOR_MAX_WM,
2526 PINEVIEW_CURSOR_DFT_WM,
2527 PINEVIEW_CURSOR_GUARD_WM,
2528 PINEVIEW_FIFO_LINE_SIZE
2530 static struct intel_watermark_params g4x_wm_info = {
2537 static struct intel_watermark_params i945_wm_info = {
2544 static struct intel_watermark_params i915_wm_info = {
2551 static struct intel_watermark_params i855_wm_info = {
2558 static struct intel_watermark_params i830_wm_info = {
2566 static struct intel_watermark_params ironlake_display_wm_info = {
2574 static struct intel_watermark_params ironlake_display_srwm_info = {
2575 ILK_DISPLAY_SR_FIFO,
2576 ILK_DISPLAY_MAX_SRWM,
2577 ILK_DISPLAY_DFT_SRWM,
2582 static struct intel_watermark_params ironlake_cursor_srwm_info = {
2584 ILK_CURSOR_MAX_SRWM,
2585 ILK_CURSOR_DFT_SRWM,
2591 * intel_calculate_wm - calculate watermark level
2592 * @clock_in_khz: pixel clock
2593 * @wm: chip FIFO params
2594 * @pixel_size: display pixel size
2595 * @latency_ns: memory latency for the platform
2597 * Calculate the watermark level (the level at which the display plane will
2598 * start fetching from memory again). Each chip has a different display
2599 * FIFO size and allocation, so the caller needs to figure that out and pass
2600 * in the correct intel_watermark_params structure.
2602 * As the pixel clock runs, the FIFO will be drained at a rate that depends
2603 * on the pixel size. When it reaches the watermark level, it'll start
2604 * fetching FIFO line sized based chunks from memory until the FIFO fills
2605 * past the watermark point. If the FIFO drains completely, a FIFO underrun
2606 * will occur, and a display engine hang could result.
2608 static unsigned long intel_calculate_wm(unsigned long clock_in_khz,
2609 struct intel_watermark_params *wm,
2611 unsigned long latency_ns)
2613 long entries_required, wm_size;
2616 * Note: we need to make sure we don't overflow for various clock &
2618 * clocks go from a few thousand to several hundred thousand.
2619 * latency is usually a few thousand
2621 entries_required = ((clock_in_khz / 1000) * pixel_size * latency_ns) /
2623 entries_required /= wm->cacheline_size;
2625 DRM_DEBUG_KMS("FIFO entries required for mode: %d\n", entries_required);
2627 wm_size = wm->fifo_size - (entries_required + wm->guard_size);
2629 DRM_DEBUG_KMS("FIFO watermark level: %d\n", wm_size);
2631 /* Don't promote wm_size to unsigned... */
2632 if (wm_size > (long)wm->max_wm)
2633 wm_size = wm->max_wm;
2635 wm_size = wm->default_wm;
2639 struct cxsr_latency {
2641 unsigned long fsb_freq;
2642 unsigned long mem_freq;
2643 unsigned long display_sr;
2644 unsigned long display_hpll_disable;
2645 unsigned long cursor_sr;
2646 unsigned long cursor_hpll_disable;
2649 static struct cxsr_latency cxsr_latency_table[] = {
2650 {1, 800, 400, 3382, 33382, 3983, 33983}, /* DDR2-400 SC */
2651 {1, 800, 667, 3354, 33354, 3807, 33807}, /* DDR2-667 SC */
2652 {1, 800, 800, 3347, 33347, 3763, 33763}, /* DDR2-800 SC */
2654 {1, 667, 400, 3400, 33400, 4021, 34021}, /* DDR2-400 SC */
2655 {1, 667, 667, 3372, 33372, 3845, 33845}, /* DDR2-667 SC */
2656 {1, 667, 800, 3386, 33386, 3822, 33822}, /* DDR2-800 SC */
2658 {1, 400, 400, 3472, 33472, 4173, 34173}, /* DDR2-400 SC */
2659 {1, 400, 667, 3443, 33443, 3996, 33996}, /* DDR2-667 SC */
2660 {1, 400, 800, 3430, 33430, 3946, 33946}, /* DDR2-800 SC */
2662 {0, 800, 400, 3438, 33438, 4065, 34065}, /* DDR2-400 SC */
2663 {0, 800, 667, 3410, 33410, 3889, 33889}, /* DDR2-667 SC */
2664 {0, 800, 800, 3403, 33403, 3845, 33845}, /* DDR2-800 SC */
2666 {0, 667, 400, 3456, 33456, 4103, 34106}, /* DDR2-400 SC */
2667 {0, 667, 667, 3428, 33428, 3927, 33927}, /* DDR2-667 SC */
2668 {0, 667, 800, 3443, 33443, 3905, 33905}, /* DDR2-800 SC */
2670 {0, 400, 400, 3528, 33528, 4255, 34255}, /* DDR2-400 SC */
2671 {0, 400, 667, 3500, 33500, 4079, 34079}, /* DDR2-667 SC */
2672 {0, 400, 800, 3487, 33487, 4029, 34029}, /* DDR2-800 SC */
2675 static struct cxsr_latency *intel_get_cxsr_latency(int is_desktop, int fsb,
2679 struct cxsr_latency *latency;
2681 if (fsb == 0 || mem == 0)
2684 for (i = 0; i < ARRAY_SIZE(cxsr_latency_table); i++) {
2685 latency = &cxsr_latency_table[i];
2686 if (is_desktop == latency->is_desktop &&
2687 fsb == latency->fsb_freq && mem == latency->mem_freq)
2691 DRM_DEBUG_KMS("Unknown FSB/MEM found, disable CxSR\n");
2696 static void pineview_disable_cxsr(struct drm_device *dev)
2698 struct drm_i915_private *dev_priv = dev->dev_private;
2701 /* deactivate cxsr */
2702 reg = I915_READ(DSPFW3);
2703 reg &= ~(PINEVIEW_SELF_REFRESH_EN);
2704 I915_WRITE(DSPFW3, reg);
2705 DRM_INFO("Big FIFO is disabled\n");
2709 * Latency for FIFO fetches is dependent on several factors:
2710 * - memory configuration (speed, channels)
2712 * - current MCH state
2713 * It can be fairly high in some situations, so here we assume a fairly
2714 * pessimal value. It's a tradeoff between extra memory fetches (if we
2715 * set this value too high, the FIFO will fetch frequently to stay full)
2716 * and power consumption (set it too low to save power and we might see
2717 * FIFO underruns and display "flicker").
2719 * A value of 5us seems to be a good balance; safe for very low end
2720 * platforms but not overly aggressive on lower latency configs.
2722 static const int latency_ns = 5000;
2724 static int i9xx_get_fifo_size(struct drm_device *dev, int plane)
2726 struct drm_i915_private *dev_priv = dev->dev_private;
2727 uint32_t dsparb = I915_READ(DSPARB);
2731 size = dsparb & 0x7f;
2733 size = ((dsparb >> DSPARB_CSTART_SHIFT) & 0x7f) -
2736 DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb,
2737 plane ? "B" : "A", size);
2742 static int i85x_get_fifo_size(struct drm_device *dev, int plane)
2744 struct drm_i915_private *dev_priv = dev->dev_private;
2745 uint32_t dsparb = I915_READ(DSPARB);
2749 size = dsparb & 0x1ff;
2751 size = ((dsparb >> DSPARB_BEND_SHIFT) & 0x1ff) -
2753 size >>= 1; /* Convert to cachelines */
2755 DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb,
2756 plane ? "B" : "A", size);
2761 static int i845_get_fifo_size(struct drm_device *dev, int plane)
2763 struct drm_i915_private *dev_priv = dev->dev_private;
2764 uint32_t dsparb = I915_READ(DSPARB);
2767 size = dsparb & 0x7f;
2768 size >>= 2; /* Convert to cachelines */
2770 DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb,
2777 static int i830_get_fifo_size(struct drm_device *dev, int plane)
2779 struct drm_i915_private *dev_priv = dev->dev_private;
2780 uint32_t dsparb = I915_READ(DSPARB);
2783 size = dsparb & 0x7f;
2784 size >>= 1; /* Convert to cachelines */
2786 DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb,
2787 plane ? "B" : "A", size);
2792 static void pineview_update_wm(struct drm_device *dev, int planea_clock,
2793 int planeb_clock, int sr_hdisplay, int pixel_size)
2795 struct drm_i915_private *dev_priv = dev->dev_private;
2798 struct cxsr_latency *latency;
2801 latency = intel_get_cxsr_latency(IS_PINEVIEW_G(dev), dev_priv->fsb_freq,
2802 dev_priv->mem_freq);
2804 DRM_DEBUG_KMS("Unknown FSB/MEM found, disable CxSR\n");
2805 pineview_disable_cxsr(dev);
2809 if (!planea_clock || !planeb_clock) {
2810 sr_clock = planea_clock ? planea_clock : planeb_clock;
2813 wm = intel_calculate_wm(sr_clock, &pineview_display_wm,
2814 pixel_size, latency->display_sr);
2815 reg = I915_READ(DSPFW1);
2816 reg &= ~DSPFW_SR_MASK;
2817 reg |= wm << DSPFW_SR_SHIFT;
2818 I915_WRITE(DSPFW1, reg);
2819 DRM_DEBUG_KMS("DSPFW1 register is %x\n", reg);
2822 wm = intel_calculate_wm(sr_clock, &pineview_cursor_wm,
2823 pixel_size, latency->cursor_sr);
2824 reg = I915_READ(DSPFW3);
2825 reg &= ~DSPFW_CURSOR_SR_MASK;
2826 reg |= (wm & 0x3f) << DSPFW_CURSOR_SR_SHIFT;
2827 I915_WRITE(DSPFW3, reg);
2829 /* Display HPLL off SR */
2830 wm = intel_calculate_wm(sr_clock, &pineview_display_hplloff_wm,
2831 pixel_size, latency->display_hpll_disable);
2832 reg = I915_READ(DSPFW3);
2833 reg &= ~DSPFW_HPLL_SR_MASK;
2834 reg |= wm & DSPFW_HPLL_SR_MASK;
2835 I915_WRITE(DSPFW3, reg);
2837 /* cursor HPLL off SR */
2838 wm = intel_calculate_wm(sr_clock, &pineview_cursor_hplloff_wm,
2839 pixel_size, latency->cursor_hpll_disable);
2840 reg = I915_READ(DSPFW3);
2841 reg &= ~DSPFW_HPLL_CURSOR_MASK;
2842 reg |= (wm & 0x3f) << DSPFW_HPLL_CURSOR_SHIFT;
2843 I915_WRITE(DSPFW3, reg);
2844 DRM_DEBUG_KMS("DSPFW3 register is %x\n", reg);
2847 reg = I915_READ(DSPFW3);
2848 reg |= PINEVIEW_SELF_REFRESH_EN;
2849 I915_WRITE(DSPFW3, reg);
2850 DRM_DEBUG_KMS("Self-refresh is enabled\n");
2852 pineview_disable_cxsr(dev);
2853 DRM_DEBUG_KMS("Self-refresh is disabled\n");
2857 static void g4x_update_wm(struct drm_device *dev, int planea_clock,
2858 int planeb_clock, int sr_hdisplay, int pixel_size)
2860 struct drm_i915_private *dev_priv = dev->dev_private;
2861 int total_size, cacheline_size;
2862 int planea_wm, planeb_wm, cursora_wm, cursorb_wm, cursor_sr;
2863 struct intel_watermark_params planea_params, planeb_params;
2864 unsigned long line_time_us;
2865 int sr_clock, sr_entries = 0, entries_required;
2867 /* Create copies of the base settings for each pipe */
2868 planea_params = planeb_params = g4x_wm_info;
2870 /* Grab a couple of global values before we overwrite them */
2871 total_size = planea_params.fifo_size;
2872 cacheline_size = planea_params.cacheline_size;
2875 * Note: we need to make sure we don't overflow for various clock &
2877 * clocks go from a few thousand to several hundred thousand.
2878 * latency is usually a few thousand
2880 entries_required = ((planea_clock / 1000) * pixel_size * latency_ns) /
2882 entries_required /= G4X_FIFO_LINE_SIZE;
2883 planea_wm = entries_required + planea_params.guard_size;
2885 entries_required = ((planeb_clock / 1000) * pixel_size * latency_ns) /
2887 entries_required /= G4X_FIFO_LINE_SIZE;
2888 planeb_wm = entries_required + planeb_params.guard_size;
2890 cursora_wm = cursorb_wm = 16;
2893 DRM_DEBUG("FIFO watermarks - A: %d, B: %d\n", planea_wm, planeb_wm);
2895 /* Calc sr entries for one plane configs */
2896 if (sr_hdisplay && (!planea_clock || !planeb_clock)) {
2897 /* self-refresh has much higher latency */
2898 static const int sr_latency_ns = 12000;
2900 sr_clock = planea_clock ? planea_clock : planeb_clock;
2901 line_time_us = ((sr_hdisplay * 1000) / sr_clock);
2903 /* Use ns/us then divide to preserve precision */
2904 sr_entries = (((sr_latency_ns / line_time_us) + 1) *
2905 pixel_size * sr_hdisplay) / 1000;
2906 sr_entries = roundup(sr_entries / cacheline_size, 1);
2907 DRM_DEBUG("self-refresh entries: %d\n", sr_entries);
2908 I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN);
2910 /* Turn off self refresh if both pipes are enabled */
2911 I915_WRITE(FW_BLC_SELF, I915_READ(FW_BLC_SELF)
2915 DRM_DEBUG("Setting FIFO watermarks - A: %d, B: %d, SR %d\n",
2916 planea_wm, planeb_wm, sr_entries);
2921 I915_WRITE(DSPFW1, (sr_entries << DSPFW_SR_SHIFT) |
2922 (cursorb_wm << DSPFW_CURSORB_SHIFT) |
2923 (planeb_wm << DSPFW_PLANEB_SHIFT) | planea_wm);
2924 I915_WRITE(DSPFW2, (I915_READ(DSPFW2) & DSPFW_CURSORA_MASK) |
2925 (cursora_wm << DSPFW_CURSORA_SHIFT));
2926 /* HPLL off in SR has some issues on G4x... disable it */
2927 I915_WRITE(DSPFW3, (I915_READ(DSPFW3) & ~DSPFW_HPLL_SR_EN) |
2928 (cursor_sr << DSPFW_CURSOR_SR_SHIFT));
2931 static void i965_update_wm(struct drm_device *dev, int planea_clock,
2932 int planeb_clock, int sr_hdisplay, int pixel_size)
2934 struct drm_i915_private *dev_priv = dev->dev_private;
2935 unsigned long line_time_us;
2936 int sr_clock, sr_entries, srwm = 1;
2938 /* Calc sr entries for one plane configs */
2939 if (sr_hdisplay && (!planea_clock || !planeb_clock)) {
2940 /* self-refresh has much higher latency */
2941 static const int sr_latency_ns = 12000;
2943 sr_clock = planea_clock ? planea_clock : planeb_clock;
2944 line_time_us = ((sr_hdisplay * 1000) / sr_clock);
2946 /* Use ns/us then divide to preserve precision */
2947 sr_entries = (((sr_latency_ns / line_time_us) + 1) *
2948 pixel_size * sr_hdisplay) / 1000;
2949 sr_entries = roundup(sr_entries / I915_FIFO_LINE_SIZE, 1);
2950 DRM_DEBUG("self-refresh entries: %d\n", sr_entries);
2951 srwm = I945_FIFO_SIZE - sr_entries;
2955 I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN);
2957 /* Turn off self refresh if both pipes are enabled */
2958 I915_WRITE(FW_BLC_SELF, I915_READ(FW_BLC_SELF)
2962 DRM_DEBUG_KMS("Setting FIFO watermarks - A: 8, B: 8, C: 8, SR %d\n",
2965 /* 965 has limitations... */
2966 I915_WRITE(DSPFW1, (srwm << DSPFW_SR_SHIFT) | (8 << 16) | (8 << 8) |
2968 I915_WRITE(DSPFW2, (8 << 8) | (8 << 0));
2971 static void i9xx_update_wm(struct drm_device *dev, int planea_clock,
2972 int planeb_clock, int sr_hdisplay, int pixel_size)
2974 struct drm_i915_private *dev_priv = dev->dev_private;
2977 int total_size, cacheline_size, cwm, srwm = 1;
2978 int planea_wm, planeb_wm;
2979 struct intel_watermark_params planea_params, planeb_params;
2980 unsigned long line_time_us;
2981 int sr_clock, sr_entries = 0;
2983 /* Create copies of the base settings for each pipe */
2984 if (IS_I965GM(dev) || IS_I945GM(dev))
2985 planea_params = planeb_params = i945_wm_info;
2986 else if (IS_I9XX(dev))
2987 planea_params = planeb_params = i915_wm_info;
2989 planea_params = planeb_params = i855_wm_info;
2991 /* Grab a couple of global values before we overwrite them */
2992 total_size = planea_params.fifo_size;
2993 cacheline_size = planea_params.cacheline_size;
2995 /* Update per-plane FIFO sizes */
2996 planea_params.fifo_size = dev_priv->display.get_fifo_size(dev, 0);
2997 planeb_params.fifo_size = dev_priv->display.get_fifo_size(dev, 1);
2999 planea_wm = intel_calculate_wm(planea_clock, &planea_params,
3000 pixel_size, latency_ns);
3001 planeb_wm = intel_calculate_wm(planeb_clock, &planeb_params,
3002 pixel_size, latency_ns);
3003 DRM_DEBUG_KMS("FIFO watermarks - A: %d, B: %d\n", planea_wm, planeb_wm);
3006 * Overlay gets an aggressive default since video jitter is bad.
3010 /* Calc sr entries for one plane configs */
3011 if (HAS_FW_BLC(dev) && sr_hdisplay &&
3012 (!planea_clock || !planeb_clock)) {
3013 /* self-refresh has much higher latency */
3014 static const int sr_latency_ns = 6000;
3016 sr_clock = planea_clock ? planea_clock : planeb_clock;
3017 line_time_us = ((sr_hdisplay * 1000) / sr_clock);
3019 /* Use ns/us then divide to preserve precision */
3020 sr_entries = (((sr_latency_ns / line_time_us) + 1) *
3021 pixel_size * sr_hdisplay) / 1000;
3022 sr_entries = roundup(sr_entries / cacheline_size, 1);
3023 DRM_DEBUG_KMS("self-refresh entries: %d\n", sr_entries);
3024 srwm = total_size - sr_entries;
3028 if (IS_I945G(dev) || IS_I945GM(dev))
3029 I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_FIFO_MASK | (srwm & 0xff));
3030 else if (IS_I915GM(dev)) {
3031 /* 915M has a smaller SRWM field */
3032 I915_WRITE(FW_BLC_SELF, srwm & 0x3f);
3033 I915_WRITE(INSTPM, I915_READ(INSTPM) | INSTPM_SELF_EN);
3036 /* Turn off self refresh if both pipes are enabled */
3037 if (IS_I945G(dev) || IS_I945GM(dev)) {
3038 I915_WRITE(FW_BLC_SELF, I915_READ(FW_BLC_SELF)
3040 } else if (IS_I915GM(dev)) {
3041 I915_WRITE(INSTPM, I915_READ(INSTPM) & ~INSTPM_SELF_EN);
3045 DRM_DEBUG_KMS("Setting FIFO watermarks - A: %d, B: %d, C: %d, SR %d\n",
3046 planea_wm, planeb_wm, cwm, srwm);
3048 fwater_lo = ((planeb_wm & 0x3f) << 16) | (planea_wm & 0x3f);
3049 fwater_hi = (cwm & 0x1f);
3051 /* Set request length to 8 cachelines per fetch */
3052 fwater_lo = fwater_lo | (1 << 24) | (1 << 8);
3053 fwater_hi = fwater_hi | (1 << 8);
3055 I915_WRITE(FW_BLC, fwater_lo);
3056 I915_WRITE(FW_BLC2, fwater_hi);
3059 static void i830_update_wm(struct drm_device *dev, int planea_clock, int unused,
3060 int unused2, int pixel_size)
3062 struct drm_i915_private *dev_priv = dev->dev_private;
3063 uint32_t fwater_lo = I915_READ(FW_BLC) & ~0xfff;
3066 i830_wm_info.fifo_size = dev_priv->display.get_fifo_size(dev, 0);
3068 planea_wm = intel_calculate_wm(planea_clock, &i830_wm_info,
3069 pixel_size, latency_ns);
3070 fwater_lo |= (3<<8) | planea_wm;
3072 DRM_DEBUG_KMS("Setting FIFO watermarks - A: %d\n", planea_wm);
3074 I915_WRITE(FW_BLC, fwater_lo);
3077 #define ILK_LP0_PLANE_LATENCY 700
3079 static void ironlake_update_wm(struct drm_device *dev, int planea_clock,
3080 int planeb_clock, int sr_hdisplay, int pixel_size)
3082 struct drm_i915_private *dev_priv = dev->dev_private;
3083 int planea_wm, planeb_wm, cursora_wm, cursorb_wm;
3084 int sr_wm, cursor_wm;
3085 unsigned long line_time_us;
3086 int sr_clock, entries_required;
3089 /* Calculate and update the watermark for plane A */
3091 entries_required = ((planea_clock / 1000) * pixel_size *
3092 ILK_LP0_PLANE_LATENCY) / 1000;
3093 entries_required = DIV_ROUND_UP(entries_required,
3094 ironlake_display_wm_info.cacheline_size);
3095 planea_wm = entries_required +
3096 ironlake_display_wm_info.guard_size;
3098 if (planea_wm > (int)ironlake_display_wm_info.max_wm)
3099 planea_wm = ironlake_display_wm_info.max_wm;
3102 reg_value = I915_READ(WM0_PIPEA_ILK);
3103 reg_value &= ~(WM0_PIPE_PLANE_MASK | WM0_PIPE_CURSOR_MASK);
3104 reg_value |= (planea_wm << WM0_PIPE_PLANE_SHIFT) |
3105 (cursora_wm & WM0_PIPE_CURSOR_MASK);
3106 I915_WRITE(WM0_PIPEA_ILK, reg_value);
3107 DRM_DEBUG_KMS("FIFO watermarks For pipe A - plane %d, "
3108 "cursor: %d\n", planea_wm, cursora_wm);
3110 /* Calculate and update the watermark for plane B */
3112 entries_required = ((planeb_clock / 1000) * pixel_size *
3113 ILK_LP0_PLANE_LATENCY) / 1000;
3114 entries_required = DIV_ROUND_UP(entries_required,
3115 ironlake_display_wm_info.cacheline_size);
3116 planeb_wm = entries_required +
3117 ironlake_display_wm_info.guard_size;
3119 if (planeb_wm > (int)ironlake_display_wm_info.max_wm)
3120 planeb_wm = ironlake_display_wm_info.max_wm;
3123 reg_value = I915_READ(WM0_PIPEB_ILK);
3124 reg_value &= ~(WM0_PIPE_PLANE_MASK | WM0_PIPE_CURSOR_MASK);
3125 reg_value |= (planeb_wm << WM0_PIPE_PLANE_SHIFT) |
3126 (cursorb_wm & WM0_PIPE_CURSOR_MASK);
3127 I915_WRITE(WM0_PIPEB_ILK, reg_value);
3128 DRM_DEBUG_KMS("FIFO watermarks For pipe B - plane %d, "
3129 "cursor: %d\n", planeb_wm, cursorb_wm);
3133 * Calculate and update the self-refresh watermark only when one
3134 * display plane is used.
3136 if (!planea_clock || !planeb_clock) {
3138 /* Read the self-refresh latency. The unit is 0.5us */
3139 int ilk_sr_latency = I915_READ(MLTR_ILK) & ILK_SRLT_MASK;
3141 sr_clock = planea_clock ? planea_clock : planeb_clock;
3142 line_time_us = ((sr_hdisplay * 1000) / sr_clock);
3144 /* Use ns/us then divide to preserve precision */
3145 line_count = ((ilk_sr_latency * 500) / line_time_us + 1000)
3148 /* calculate the self-refresh watermark for display plane */
3149 entries_required = line_count * sr_hdisplay * pixel_size;
3150 entries_required = DIV_ROUND_UP(entries_required,
3151 ironlake_display_srwm_info.cacheline_size);
3152 sr_wm = entries_required +
3153 ironlake_display_srwm_info.guard_size;
3155 /* calculate the self-refresh watermark for display cursor */
3156 entries_required = line_count * pixel_size * 64;
3157 entries_required = DIV_ROUND_UP(entries_required,
3158 ironlake_cursor_srwm_info.cacheline_size);
3159 cursor_wm = entries_required +
3160 ironlake_cursor_srwm_info.guard_size;
3162 /* configure watermark and enable self-refresh */
3163 reg_value = I915_READ(WM1_LP_ILK);
3164 reg_value &= ~(WM1_LP_LATENCY_MASK | WM1_LP_SR_MASK |
3165 WM1_LP_CURSOR_MASK);
3166 reg_value |= WM1_LP_SR_EN |
3167 (ilk_sr_latency << WM1_LP_LATENCY_SHIFT) |
3168 (sr_wm << WM1_LP_SR_SHIFT) | cursor_wm;
3170 I915_WRITE(WM1_LP_ILK, reg_value);
3171 DRM_DEBUG_KMS("self-refresh watermark: display plane %d "
3172 "cursor %d\n", sr_wm, cursor_wm);
3175 /* Turn off self refresh if both pipes are enabled */
3176 I915_WRITE(WM1_LP_ILK, I915_READ(WM1_LP_ILK) & ~WM1_LP_SR_EN);
3180 * intel_update_watermarks - update FIFO watermark values based on current modes
3182 * Calculate watermark values for the various WM regs based on current mode
3183 * and plane configuration.
3185 * There are several cases to deal with here:
3186 * - normal (i.e. non-self-refresh)
3187 * - self-refresh (SR) mode
3188 * - lines are large relative to FIFO size (buffer can hold up to 2)
3189 * - lines are small relative to FIFO size (buffer can hold more than 2
3190 * lines), so need to account for TLB latency
3192 * The normal calculation is:
3193 * watermark = dotclock * bytes per pixel * latency
3194 * where latency is platform & configuration dependent (we assume pessimal
3197 * The SR calculation is:
3198 * watermark = (trunc(latency/line time)+1) * surface width *
3201 * line time = htotal / dotclock
3202 * and latency is assumed to be high, as above.
3204 * The final value programmed to the register should always be rounded up,
3205 * and include an extra 2 entries to account for clock crossings.
3207 * We don't use the sprite, so we can ignore that. And on Crestline we have
3208 * to set the non-SR watermarks to 8.
3210 static void intel_update_watermarks(struct drm_device *dev)
3212 struct drm_i915_private *dev_priv = dev->dev_private;
3213 struct drm_crtc *crtc;
3214 struct intel_crtc *intel_crtc;
3215 int sr_hdisplay = 0;
3216 unsigned long planea_clock = 0, planeb_clock = 0, sr_clock = 0;
3217 int enabled = 0, pixel_size = 0;
3219 if (!dev_priv->display.update_wm)
3222 /* Get the clock config from both planes */
3223 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
3224 intel_crtc = to_intel_crtc(crtc);
3225 if (crtc->enabled) {
3227 if (intel_crtc->plane == 0) {
3228 DRM_DEBUG_KMS("plane A (pipe %d) clock: %d\n",
3229 intel_crtc->pipe, crtc->mode.clock);
3230 planea_clock = crtc->mode.clock;
3232 DRM_DEBUG_KMS("plane B (pipe %d) clock: %d\n",
3233 intel_crtc->pipe, crtc->mode.clock);
3234 planeb_clock = crtc->mode.clock;
3236 sr_hdisplay = crtc->mode.hdisplay;
3237 sr_clock = crtc->mode.clock;
3239 pixel_size = crtc->fb->bits_per_pixel / 8;
3241 pixel_size = 4; /* by default */
3248 dev_priv->display.update_wm(dev, planea_clock, planeb_clock,
3249 sr_hdisplay, pixel_size);
3252 static int intel_crtc_mode_set(struct drm_crtc *crtc,
3253 struct drm_display_mode *mode,
3254 struct drm_display_mode *adjusted_mode,
3256 struct drm_framebuffer *old_fb)
3258 struct drm_device *dev = crtc->dev;
3259 struct drm_i915_private *dev_priv = dev->dev_private;
3260 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3261 int pipe = intel_crtc->pipe;
3262 int plane = intel_crtc->plane;
3263 int fp_reg = (pipe == 0) ? FPA0 : FPB0;
3264 int dpll_reg = (pipe == 0) ? DPLL_A : DPLL_B;
3265 int dpll_md_reg = (intel_crtc->pipe == 0) ? DPLL_A_MD : DPLL_B_MD;
3266 int dspcntr_reg = (plane == 0) ? DSPACNTR : DSPBCNTR;
3267 int pipeconf_reg = (pipe == 0) ? PIPEACONF : PIPEBCONF;
3268 int htot_reg = (pipe == 0) ? HTOTAL_A : HTOTAL_B;
3269 int hblank_reg = (pipe == 0) ? HBLANK_A : HBLANK_B;
3270 int hsync_reg = (pipe == 0) ? HSYNC_A : HSYNC_B;
3271 int vtot_reg = (pipe == 0) ? VTOTAL_A : VTOTAL_B;
3272 int vblank_reg = (pipe == 0) ? VBLANK_A : VBLANK_B;
3273 int vsync_reg = (pipe == 0) ? VSYNC_A : VSYNC_B;
3274 int dspsize_reg = (plane == 0) ? DSPASIZE : DSPBSIZE;
3275 int dsppos_reg = (plane == 0) ? DSPAPOS : DSPBPOS;
3276 int pipesrc_reg = (pipe == 0) ? PIPEASRC : PIPEBSRC;
3277 int refclk, num_connectors = 0;
3278 intel_clock_t clock, reduced_clock;
3279 u32 dpll = 0, fp = 0, fp2 = 0, dspcntr, pipeconf;
3280 bool ok, has_reduced_clock = false, is_sdvo = false, is_dvo = false;
3281 bool is_crt = false, is_lvds = false, is_tv = false, is_dp = false;
3282 bool is_edp = false;
3283 struct drm_mode_config *mode_config = &dev->mode_config;
3284 struct drm_encoder *encoder;
3285 struct intel_encoder *intel_encoder = NULL;
3286 const intel_limit_t *limit;
3288 struct fdi_m_n m_n = {0};
3289 int data_m1_reg = (pipe == 0) ? PIPEA_DATA_M1 : PIPEB_DATA_M1;
3290 int data_n1_reg = (pipe == 0) ? PIPEA_DATA_N1 : PIPEB_DATA_N1;
3291 int link_m1_reg = (pipe == 0) ? PIPEA_LINK_M1 : PIPEB_LINK_M1;
3292 int link_n1_reg = (pipe == 0) ? PIPEA_LINK_N1 : PIPEB_LINK_N1;
3293 int pch_fp_reg = (pipe == 0) ? PCH_FPA0 : PCH_FPB0;
3294 int pch_dpll_reg = (pipe == 0) ? PCH_DPLL_A : PCH_DPLL_B;
3295 int fdi_rx_reg = (pipe == 0) ? FDI_RXA_CTL : FDI_RXB_CTL;
3296 int fdi_tx_reg = (pipe == 0) ? FDI_TXA_CTL : FDI_TXB_CTL;
3297 int trans_dpll_sel = (pipe == 0) ? 0 : 1;
3298 int lvds_reg = LVDS;
3300 int sdvo_pixel_multiply;
3303 drm_vblank_pre_modeset(dev, pipe);
3305 list_for_each_entry(encoder, &mode_config->encoder_list, head) {
3307 if (!encoder || encoder->crtc != crtc)
3310 intel_encoder = enc_to_intel_encoder(encoder);
3312 switch (intel_encoder->type) {
3313 case INTEL_OUTPUT_LVDS:
3316 case INTEL_OUTPUT_SDVO:
3317 case INTEL_OUTPUT_HDMI:
3319 if (intel_encoder->needs_tv_clock)
3322 case INTEL_OUTPUT_DVO:
3325 case INTEL_OUTPUT_TVOUT:
3328 case INTEL_OUTPUT_ANALOG:
3331 case INTEL_OUTPUT_DISPLAYPORT:
3334 case INTEL_OUTPUT_EDP:
3342 if (is_lvds && dev_priv->lvds_use_ssc && num_connectors < 2) {
3343 refclk = dev_priv->lvds_ssc_freq * 1000;
3344 DRM_DEBUG_KMS("using SSC reference clock of %d MHz\n",
3346 } else if (IS_I9XX(dev)) {
3348 if (HAS_PCH_SPLIT(dev))
3349 refclk = 120000; /* 120Mhz refclk */
3356 * Returns a set of divisors for the desired target clock with the given
3357 * refclk, or FALSE. The returned values represent the clock equation:
3358 * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
3360 limit = intel_limit(crtc);
3361 ok = limit->find_pll(limit, crtc, adjusted_mode->clock, refclk, &clock);
3363 DRM_ERROR("Couldn't find PLL settings for mode!\n");
3364 drm_vblank_post_modeset(dev, pipe);
3368 if (is_lvds && dev_priv->lvds_downclock_avail) {
3369 has_reduced_clock = limit->find_pll(limit, crtc,
3370 dev_priv->lvds_downclock,
3373 if (has_reduced_clock && (clock.p != reduced_clock.p)) {
3375 * If the different P is found, it means that we can't
3376 * switch the display clock by using the FP0/FP1.
3377 * In such case we will disable the LVDS downclock
3380 DRM_DEBUG_KMS("Different P is found for "
3381 "LVDS clock/downclock\n");
3382 has_reduced_clock = 0;
3385 /* SDVO TV has fixed PLL values depend on its clock range,
3386 this mirrors vbios setting. */
3387 if (is_sdvo && is_tv) {
3388 if (adjusted_mode->clock >= 100000
3389 && adjusted_mode->clock < 140500) {
3395 } else if (adjusted_mode->clock >= 140500
3396 && adjusted_mode->clock <= 200000) {
3406 if (HAS_PCH_SPLIT(dev)) {
3407 int lane = 0, link_bw, bpp;
3408 /* eDP doesn't require FDI link, so just set DP M/N
3409 according to current link config */
3411 target_clock = mode->clock;
3412 intel_edp_link_config(intel_encoder,
3415 /* DP over FDI requires target mode clock
3416 instead of link clock */
3418 target_clock = mode->clock;
3420 target_clock = adjusted_mode->clock;
3424 /* determine panel color depth */
3425 temp = I915_READ(pipeconf_reg);
3426 temp &= ~PIPE_BPC_MASK;
3428 int lvds_reg = I915_READ(PCH_LVDS);
3429 /* the BPC will be 6 if it is 18-bit LVDS panel */
3430 if ((lvds_reg & LVDS_A3_POWER_MASK) == LVDS_A3_POWER_UP)
3434 } else if (is_edp) {
3435 switch (dev_priv->edp_bpp/3) {
3451 I915_WRITE(pipeconf_reg, temp);
3452 I915_READ(pipeconf_reg);
3454 switch (temp & PIPE_BPC_MASK) {
3468 DRM_ERROR("unknown pipe bpc value\n");
3474 * Account for spread spectrum to avoid
3475 * oversubscribing the link. Max center spread
3476 * is 2.5%; use 5% for safety's sake.
3478 u32 bps = target_clock * bpp * 21 / 20;
3479 lane = bps / (link_bw * 8) + 1;
3482 intel_crtc->fdi_lanes = lane;
3484 ironlake_compute_m_n(bpp, lane, target_clock, link_bw, &m_n);
3487 /* Ironlake: try to setup display ref clock before DPLL
3488 * enabling. This is only under driver's control after
3489 * PCH B stepping, previous chipset stepping should be
3490 * ignoring this setting.
3492 if (HAS_PCH_SPLIT(dev)) {
3493 temp = I915_READ(PCH_DREF_CONTROL);
3494 /* Always enable nonspread source */
3495 temp &= ~DREF_NONSPREAD_SOURCE_MASK;
3496 temp |= DREF_NONSPREAD_SOURCE_ENABLE;
3497 I915_WRITE(PCH_DREF_CONTROL, temp);
3498 POSTING_READ(PCH_DREF_CONTROL);
3500 temp &= ~DREF_SSC_SOURCE_MASK;
3501 temp |= DREF_SSC_SOURCE_ENABLE;
3502 I915_WRITE(PCH_DREF_CONTROL, temp);
3503 POSTING_READ(PCH_DREF_CONTROL);
3508 if (dev_priv->lvds_use_ssc) {
3509 temp |= DREF_SSC1_ENABLE;
3510 I915_WRITE(PCH_DREF_CONTROL, temp);
3511 POSTING_READ(PCH_DREF_CONTROL);
3515 temp &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
3516 temp |= DREF_CPU_SOURCE_OUTPUT_DOWNSPREAD;
3517 I915_WRITE(PCH_DREF_CONTROL, temp);
3518 POSTING_READ(PCH_DREF_CONTROL);
3520 temp |= DREF_CPU_SOURCE_OUTPUT_NONSPREAD;
3521 I915_WRITE(PCH_DREF_CONTROL, temp);
3522 POSTING_READ(PCH_DREF_CONTROL);
3527 if (IS_PINEVIEW(dev)) {
3528 fp = (1 << clock.n) << 16 | clock.m1 << 8 | clock.m2;
3529 if (has_reduced_clock)
3530 fp2 = (1 << reduced_clock.n) << 16 |
3531 reduced_clock.m1 << 8 | reduced_clock.m2;
3533 fp = clock.n << 16 | clock.m1 << 8 | clock.m2;
3534 if (has_reduced_clock)
3535 fp2 = reduced_clock.n << 16 | reduced_clock.m1 << 8 |
3539 if (!HAS_PCH_SPLIT(dev))
3540 dpll = DPLL_VGA_MODE_DIS;
3544 dpll |= DPLLB_MODE_LVDS;
3546 dpll |= DPLLB_MODE_DAC_SERIAL;
3548 dpll |= DPLL_DVO_HIGH_SPEED;
3549 sdvo_pixel_multiply = adjusted_mode->clock / mode->clock;
3550 if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev))
3551 dpll |= (sdvo_pixel_multiply - 1) << SDVO_MULTIPLIER_SHIFT_HIRES;
3552 else if (HAS_PCH_SPLIT(dev))
3553 dpll |= (sdvo_pixel_multiply - 1) << PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT;
3556 dpll |= DPLL_DVO_HIGH_SPEED;
3558 /* compute bitmask from p1 value */
3559 if (IS_PINEVIEW(dev))
3560 dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW;
3562 dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
3564 if (HAS_PCH_SPLIT(dev))
3565 dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
3566 if (IS_G4X(dev) && has_reduced_clock)
3567 dpll |= (1 << (reduced_clock.p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
3571 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
3574 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
3577 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
3580 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
3583 if (IS_I965G(dev) && !HAS_PCH_SPLIT(dev))
3584 dpll |= (6 << PLL_LOAD_PULSE_PHASE_SHIFT);
3587 dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
3590 dpll |= PLL_P1_DIVIDE_BY_TWO;
3592 dpll |= (clock.p1 - 2) << DPLL_FPA01_P1_POST_DIV_SHIFT;
3594 dpll |= PLL_P2_DIVIDE_BY_4;
3598 if (is_sdvo && is_tv)
3599 dpll |= PLL_REF_INPUT_TVCLKINBC;
3601 /* XXX: just matching BIOS for now */
3602 /* dpll |= PLL_REF_INPUT_TVCLKINBC; */
3604 else if (is_lvds && dev_priv->lvds_use_ssc && num_connectors < 2)
3605 dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
3607 dpll |= PLL_REF_INPUT_DREFCLK;
3609 /* setup pipeconf */
3610 pipeconf = I915_READ(pipeconf_reg);
3612 /* Set up the display plane register */
3613 dspcntr = DISPPLANE_GAMMA_ENABLE;
3615 /* Ironlake's plane is forced to pipe, bit 24 is to
3616 enable color space conversion */
3617 if (!HAS_PCH_SPLIT(dev)) {
3619 dspcntr &= ~DISPPLANE_SEL_PIPE_MASK;
3621 dspcntr |= DISPPLANE_SEL_PIPE_B;
3624 if (pipe == 0 && !IS_I965G(dev)) {
3625 /* Enable pixel doubling when the dot clock is > 90% of the (display)
3628 * XXX: No double-wide on 915GM pipe B. Is that the only reason for the
3632 dev_priv->display.get_display_clock_speed(dev) * 9 / 10)
3633 pipeconf |= PIPEACONF_DOUBLE_WIDE;
3635 pipeconf &= ~PIPEACONF_DOUBLE_WIDE;
3638 /* Disable the panel fitter if it was on our pipe */
3639 if (!HAS_PCH_SPLIT(dev) && intel_panel_fitter_pipe(dev) == pipe)
3640 I915_WRITE(PFIT_CONTROL, 0);
3642 DRM_DEBUG_KMS("Mode for pipe %c:\n", pipe == 0 ? 'A' : 'B');
3643 drm_mode_debug_printmodeline(mode);
3645 /* assign to Ironlake registers */
3646 if (HAS_PCH_SPLIT(dev)) {
3647 fp_reg = pch_fp_reg;
3648 dpll_reg = pch_dpll_reg;
3652 ironlake_disable_pll_edp(crtc);
3653 } else if ((dpll & DPLL_VCO_ENABLE)) {
3654 I915_WRITE(fp_reg, fp);
3655 I915_WRITE(dpll_reg, dpll & ~DPLL_VCO_ENABLE);
3656 I915_READ(dpll_reg);
3660 /* enable transcoder DPLL */
3661 if (HAS_PCH_CPT(dev)) {
3662 temp = I915_READ(PCH_DPLL_SEL);
3663 if (trans_dpll_sel == 0)
3664 temp |= (TRANSA_DPLL_ENABLE | TRANSA_DPLLA_SEL);
3666 temp |= (TRANSB_DPLL_ENABLE | TRANSB_DPLLB_SEL);
3667 I915_WRITE(PCH_DPLL_SEL, temp);
3668 I915_READ(PCH_DPLL_SEL);
3672 /* The LVDS pin pair needs to be on before the DPLLs are enabled.
3673 * This is an exception to the general rule that mode_set doesn't turn
3679 if (HAS_PCH_SPLIT(dev))
3680 lvds_reg = PCH_LVDS;
3682 lvds = I915_READ(lvds_reg);
3683 lvds |= LVDS_PORT_EN | LVDS_A0A2_CLKA_POWER_UP;
3685 if (HAS_PCH_CPT(dev))
3686 lvds |= PORT_TRANS_B_SEL_CPT;
3688 lvds |= LVDS_PIPEB_SELECT;
3690 if (HAS_PCH_CPT(dev))
3691 lvds &= ~PORT_TRANS_SEL_MASK;
3693 lvds &= ~LVDS_PIPEB_SELECT;
3695 /* set the corresponsding LVDS_BORDER bit */
3696 lvds |= dev_priv->lvds_border_bits;
3697 /* Set the B0-B3 data pairs corresponding to whether we're going to
3698 * set the DPLLs for dual-channel mode or not.
3701 lvds |= LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP;
3703 lvds &= ~(LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP);
3705 /* It would be nice to set 24 vs 18-bit mode (LVDS_A3_POWER_UP)
3706 * appropriately here, but we need to look more thoroughly into how
3707 * panels behave in the two modes.
3709 /* set the dithering flag */
3710 if (IS_I965G(dev)) {
3711 if (dev_priv->lvds_dither) {
3712 if (HAS_PCH_SPLIT(dev)) {
3713 pipeconf |= PIPE_ENABLE_DITHER;
3714 pipeconf |= PIPE_DITHER_TYPE_ST01;
3716 lvds |= LVDS_ENABLE_DITHER;
3718 if (HAS_PCH_SPLIT(dev)) {
3719 pipeconf &= ~PIPE_ENABLE_DITHER;
3720 pipeconf &= ~PIPE_DITHER_TYPE_MASK;
3722 lvds &= ~LVDS_ENABLE_DITHER;
3725 I915_WRITE(lvds_reg, lvds);
3726 I915_READ(lvds_reg);
3729 intel_dp_set_m_n(crtc, mode, adjusted_mode);
3730 else if (HAS_PCH_SPLIT(dev)) {
3731 /* For non-DP output, clear any trans DP clock recovery setting.*/
3733 I915_WRITE(TRANSA_DATA_M1, 0);
3734 I915_WRITE(TRANSA_DATA_N1, 0);
3735 I915_WRITE(TRANSA_DP_LINK_M1, 0);
3736 I915_WRITE(TRANSA_DP_LINK_N1, 0);
3738 I915_WRITE(TRANSB_DATA_M1, 0);
3739 I915_WRITE(TRANSB_DATA_N1, 0);
3740 I915_WRITE(TRANSB_DP_LINK_M1, 0);
3741 I915_WRITE(TRANSB_DP_LINK_N1, 0);
3746 I915_WRITE(fp_reg, fp);
3747 I915_WRITE(dpll_reg, dpll);
3748 I915_READ(dpll_reg);
3749 /* Wait for the clocks to stabilize. */
3752 if (IS_I965G(dev) && !HAS_PCH_SPLIT(dev)) {
3754 sdvo_pixel_multiply = adjusted_mode->clock / mode->clock;
3755 I915_WRITE(dpll_md_reg, (0 << DPLL_MD_UDI_DIVIDER_SHIFT) |
3756 ((sdvo_pixel_multiply - 1) << DPLL_MD_UDI_MULTIPLIER_SHIFT));
3758 I915_WRITE(dpll_md_reg, 0);
3760 /* write it again -- the BIOS does, after all */
3761 I915_WRITE(dpll_reg, dpll);
3763 I915_READ(dpll_reg);
3764 /* Wait for the clocks to stabilize. */
3768 if (is_lvds && has_reduced_clock && i915_powersave) {
3769 I915_WRITE(fp_reg + 4, fp2);
3770 intel_crtc->lowfreq_avail = true;
3771 if (HAS_PIPE_CXSR(dev)) {
3772 DRM_DEBUG_KMS("enabling CxSR downclocking\n");
3773 pipeconf |= PIPECONF_CXSR_DOWNCLOCK;
3776 I915_WRITE(fp_reg + 4, fp);
3777 intel_crtc->lowfreq_avail = false;
3778 if (HAS_PIPE_CXSR(dev)) {
3779 DRM_DEBUG_KMS("disabling CxSR downclocking\n");
3780 pipeconf &= ~PIPECONF_CXSR_DOWNCLOCK;
3784 I915_WRITE(htot_reg, (adjusted_mode->crtc_hdisplay - 1) |
3785 ((adjusted_mode->crtc_htotal - 1) << 16));
3786 I915_WRITE(hblank_reg, (adjusted_mode->crtc_hblank_start - 1) |
3787 ((adjusted_mode->crtc_hblank_end - 1) << 16));
3788 I915_WRITE(hsync_reg, (adjusted_mode->crtc_hsync_start - 1) |
3789 ((adjusted_mode->crtc_hsync_end - 1) << 16));
3790 I915_WRITE(vtot_reg, (adjusted_mode->crtc_vdisplay - 1) |
3791 ((adjusted_mode->crtc_vtotal - 1) << 16));
3792 I915_WRITE(vblank_reg, (adjusted_mode->crtc_vblank_start - 1) |
3793 ((adjusted_mode->crtc_vblank_end - 1) << 16));
3794 I915_WRITE(vsync_reg, (adjusted_mode->crtc_vsync_start - 1) |
3795 ((adjusted_mode->crtc_vsync_end - 1) << 16));
3796 /* pipesrc and dspsize control the size that is scaled from, which should
3797 * always be the user's requested size.
3799 if (!HAS_PCH_SPLIT(dev)) {
3800 I915_WRITE(dspsize_reg, ((mode->vdisplay - 1) << 16) |
3801 (mode->hdisplay - 1));
3802 I915_WRITE(dsppos_reg, 0);
3804 I915_WRITE(pipesrc_reg, ((mode->hdisplay - 1) << 16) | (mode->vdisplay - 1));
3806 if (HAS_PCH_SPLIT(dev)) {
3807 I915_WRITE(data_m1_reg, TU_SIZE(m_n.tu) | m_n.gmch_m);
3808 I915_WRITE(data_n1_reg, TU_SIZE(m_n.tu) | m_n.gmch_n);
3809 I915_WRITE(link_m1_reg, m_n.link_m);
3810 I915_WRITE(link_n1_reg, m_n.link_n);
3813 ironlake_set_pll_edp(crtc, adjusted_mode->clock);
3815 /* enable FDI RX PLL too */
3816 temp = I915_READ(fdi_rx_reg);
3817 I915_WRITE(fdi_rx_reg, temp | FDI_RX_PLL_ENABLE);
3818 I915_READ(fdi_rx_reg);
3821 /* enable FDI TX PLL too */
3822 temp = I915_READ(fdi_tx_reg);
3823 I915_WRITE(fdi_tx_reg, temp | FDI_TX_PLL_ENABLE);
3824 I915_READ(fdi_tx_reg);
3826 /* enable FDI RX PCDCLK */
3827 temp = I915_READ(fdi_rx_reg);
3828 I915_WRITE(fdi_rx_reg, temp | FDI_SEL_PCDCLK);
3829 I915_READ(fdi_rx_reg);
3834 I915_WRITE(pipeconf_reg, pipeconf);
3835 I915_READ(pipeconf_reg);
3837 intel_wait_for_vblank(dev);
3839 if (IS_IRONLAKE(dev)) {
3840 /* enable address swizzle for tiling buffer */
3841 temp = I915_READ(DISP_ARB_CTL);
3842 I915_WRITE(DISP_ARB_CTL, temp | DISP_TILE_SURFACE_SWIZZLING);
3845 I915_WRITE(dspcntr_reg, dspcntr);
3847 /* Flush the plane changes */
3848 ret = intel_pipe_set_base(crtc, x, y, old_fb);
3850 if ((IS_I965G(dev) || plane == 0))
3851 intel_update_fbc(crtc, &crtc->mode);
3853 intel_update_watermarks(dev);
3855 drm_vblank_post_modeset(dev, pipe);
3860 /** Loads the palette/gamma unit for the CRTC with the prepared values */
3861 void intel_crtc_load_lut(struct drm_crtc *crtc)
3863 struct drm_device *dev = crtc->dev;
3864 struct drm_i915_private *dev_priv = dev->dev_private;
3865 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3866 int palreg = (intel_crtc->pipe == 0) ? PALETTE_A : PALETTE_B;
3869 /* The clocks have to be on to load the palette. */
3873 /* use legacy palette for Ironlake */
3874 if (HAS_PCH_SPLIT(dev))
3875 palreg = (intel_crtc->pipe == 0) ? LGC_PALETTE_A :
3878 for (i = 0; i < 256; i++) {
3879 I915_WRITE(palreg + 4 * i,
3880 (intel_crtc->lut_r[i] << 16) |
3881 (intel_crtc->lut_g[i] << 8) |
3882 intel_crtc->lut_b[i]);
3886 static int intel_crtc_cursor_set(struct drm_crtc *crtc,
3887 struct drm_file *file_priv,
3889 uint32_t width, uint32_t height)
3891 struct drm_device *dev = crtc->dev;
3892 struct drm_i915_private *dev_priv = dev->dev_private;
3893 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3894 struct drm_gem_object *bo;
3895 struct drm_i915_gem_object *obj_priv;
3896 int pipe = intel_crtc->pipe;
3897 uint32_t control = (pipe == 0) ? CURACNTR : CURBCNTR;
3898 uint32_t base = (pipe == 0) ? CURABASE : CURBBASE;
3899 uint32_t temp = I915_READ(control);
3903 DRM_DEBUG_KMS("\n");
3905 /* if we want to turn off the cursor ignore width and height */
3907 DRM_DEBUG_KMS("cursor off\n");
3908 if (IS_MOBILE(dev) || IS_I9XX(dev)) {
3909 temp &= ~(CURSOR_MODE | MCURSOR_GAMMA_ENABLE);
3910 temp |= CURSOR_MODE_DISABLE;
3912 temp &= ~(CURSOR_ENABLE | CURSOR_GAMMA_ENABLE);
3916 mutex_lock(&dev->struct_mutex);
3920 /* Currently we only support 64x64 cursors */
3921 if (width != 64 || height != 64) {
3922 DRM_ERROR("we currently only support 64x64 cursors\n");
3926 bo = drm_gem_object_lookup(dev, file_priv, handle);
3930 obj_priv = to_intel_bo(bo);
3932 if (bo->size < width * height * 4) {
3933 DRM_ERROR("buffer is to small\n");
3938 /* we only need to pin inside GTT if cursor is non-phy */
3939 mutex_lock(&dev->struct_mutex);
3940 if (!dev_priv->info->cursor_needs_physical) {
3941 ret = i915_gem_object_pin(bo, PAGE_SIZE);
3943 DRM_ERROR("failed to pin cursor bo\n");
3946 addr = obj_priv->gtt_offset;
3948 ret = i915_gem_attach_phys_object(dev, bo, (pipe == 0) ? I915_GEM_PHYS_CURSOR_0 : I915_GEM_PHYS_CURSOR_1);
3950 DRM_ERROR("failed to attach phys object\n");
3953 addr = obj_priv->phys_obj->handle->busaddr;
3957 I915_WRITE(CURSIZE, (height << 12) | width);
3959 /* Hooray for CUR*CNTR differences */
3960 if (IS_MOBILE(dev) || IS_I9XX(dev)) {
3961 temp &= ~(CURSOR_MODE | MCURSOR_PIPE_SELECT);
3962 temp |= CURSOR_MODE_64_ARGB_AX | MCURSOR_GAMMA_ENABLE;
3963 temp |= (pipe << 28); /* Connect to correct pipe */
3965 temp &= ~(CURSOR_FORMAT_MASK);
3966 temp |= CURSOR_ENABLE;
3967 temp |= CURSOR_FORMAT_ARGB | CURSOR_GAMMA_ENABLE;
3971 I915_WRITE(control, temp);
3972 I915_WRITE(base, addr);
3974 if (intel_crtc->cursor_bo) {
3975 if (dev_priv->info->cursor_needs_physical) {
3976 if (intel_crtc->cursor_bo != bo)
3977 i915_gem_detach_phys_object(dev, intel_crtc->cursor_bo);
3979 i915_gem_object_unpin(intel_crtc->cursor_bo);
3980 drm_gem_object_unreference(intel_crtc->cursor_bo);
3983 mutex_unlock(&dev->struct_mutex);
3985 intel_crtc->cursor_addr = addr;
3986 intel_crtc->cursor_bo = bo;
3990 mutex_unlock(&dev->struct_mutex);
3992 drm_gem_object_unreference_unlocked(bo);
3996 static int intel_crtc_cursor_move(struct drm_crtc *crtc, int x, int y)
3998 struct drm_device *dev = crtc->dev;
3999 struct drm_i915_private *dev_priv = dev->dev_private;
4000 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4001 struct intel_framebuffer *intel_fb;
4002 int pipe = intel_crtc->pipe;
4007 intel_fb = to_intel_framebuffer(crtc->fb);
4008 intel_mark_busy(dev, intel_fb->obj);
4012 temp |= CURSOR_POS_SIGN << CURSOR_X_SHIFT;
4016 temp |= CURSOR_POS_SIGN << CURSOR_Y_SHIFT;
4020 temp |= x << CURSOR_X_SHIFT;
4021 temp |= y << CURSOR_Y_SHIFT;
4023 adder = intel_crtc->cursor_addr;
4024 I915_WRITE((pipe == 0) ? CURAPOS : CURBPOS, temp);
4025 I915_WRITE((pipe == 0) ? CURABASE : CURBBASE, adder);
4030 /** Sets the color ramps on behalf of RandR */
4031 void intel_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
4032 u16 blue, int regno)
4034 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4036 intel_crtc->lut_r[regno] = red >> 8;
4037 intel_crtc->lut_g[regno] = green >> 8;
4038 intel_crtc->lut_b[regno] = blue >> 8;
4041 void intel_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
4042 u16 *blue, int regno)
4044 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4046 *red = intel_crtc->lut_r[regno] << 8;
4047 *green = intel_crtc->lut_g[regno] << 8;
4048 *blue = intel_crtc->lut_b[regno] << 8;
4051 static void intel_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
4052 u16 *blue, uint32_t size)
4054 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4060 for (i = 0; i < 256; i++) {
4061 intel_crtc->lut_r[i] = red[i] >> 8;
4062 intel_crtc->lut_g[i] = green[i] >> 8;
4063 intel_crtc->lut_b[i] = blue[i] >> 8;
4066 intel_crtc_load_lut(crtc);
4070 * Get a pipe with a simple mode set on it for doing load-based monitor
4073 * It will be up to the load-detect code to adjust the pipe as appropriate for
4074 * its requirements. The pipe will be connected to no other encoders.
4076 * Currently this code will only succeed if there is a pipe with no encoders
4077 * configured for it. In the future, it could choose to temporarily disable
4078 * some outputs to free up a pipe for its use.
4080 * \return crtc, or NULL if no pipes are available.
4083 /* VESA 640x480x72Hz mode to set on the pipe */
4084 static struct drm_display_mode load_detect_mode = {
4085 DRM_MODE("640x480", DRM_MODE_TYPE_DEFAULT, 31500, 640, 664,
4086 704, 832, 0, 480, 489, 491, 520, 0, DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
4089 struct drm_crtc *intel_get_load_detect_pipe(struct intel_encoder *intel_encoder,
4090 struct drm_connector *connector,
4091 struct drm_display_mode *mode,
4094 struct intel_crtc *intel_crtc;
4095 struct drm_crtc *possible_crtc;
4096 struct drm_crtc *supported_crtc =NULL;
4097 struct drm_encoder *encoder = &intel_encoder->enc;
4098 struct drm_crtc *crtc = NULL;
4099 struct drm_device *dev = encoder->dev;
4100 struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
4101 struct drm_crtc_helper_funcs *crtc_funcs;
4105 * Algorithm gets a little messy:
4106 * - if the connector already has an assigned crtc, use it (but make
4107 * sure it's on first)
4108 * - try to find the first unused crtc that can drive this connector,
4109 * and use that if we find one
4110 * - if there are no unused crtcs available, try to use the first
4111 * one we found that supports the connector
4114 /* See if we already have a CRTC for this connector */
4115 if (encoder->crtc) {
4116 crtc = encoder->crtc;
4117 /* Make sure the crtc and connector are running */
4118 intel_crtc = to_intel_crtc(crtc);
4119 *dpms_mode = intel_crtc->dpms_mode;
4120 if (intel_crtc->dpms_mode != DRM_MODE_DPMS_ON) {
4121 crtc_funcs = crtc->helper_private;
4122 crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON);
4123 encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON);
4128 /* Find an unused one (if possible) */
4129 list_for_each_entry(possible_crtc, &dev->mode_config.crtc_list, head) {
4131 if (!(encoder->possible_crtcs & (1 << i)))
4133 if (!possible_crtc->enabled) {
4134 crtc = possible_crtc;
4137 if (!supported_crtc)
4138 supported_crtc = possible_crtc;
4142 * If we didn't find an unused CRTC, don't use any.
4148 encoder->crtc = crtc;
4149 connector->encoder = encoder;
4150 intel_encoder->load_detect_temp = true;
4152 intel_crtc = to_intel_crtc(crtc);
4153 *dpms_mode = intel_crtc->dpms_mode;
4155 if (!crtc->enabled) {
4157 mode = &load_detect_mode;
4158 drm_crtc_helper_set_mode(crtc, mode, 0, 0, crtc->fb);
4160 if (intel_crtc->dpms_mode != DRM_MODE_DPMS_ON) {
4161 crtc_funcs = crtc->helper_private;
4162 crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON);
4165 /* Add this connector to the crtc */
4166 encoder_funcs->mode_set(encoder, &crtc->mode, &crtc->mode);
4167 encoder_funcs->commit(encoder);
4169 /* let the connector get through one full cycle before testing */
4170 intel_wait_for_vblank(dev);
4175 void intel_release_load_detect_pipe(struct intel_encoder *intel_encoder,
4176 struct drm_connector *connector, int dpms_mode)
4178 struct drm_encoder *encoder = &intel_encoder->enc;
4179 struct drm_device *dev = encoder->dev;
4180 struct drm_crtc *crtc = encoder->crtc;
4181 struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
4182 struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
4184 if (intel_encoder->load_detect_temp) {
4185 encoder->crtc = NULL;
4186 connector->encoder = NULL;
4187 intel_encoder->load_detect_temp = false;
4188 crtc->enabled = drm_helper_crtc_in_use(crtc);
4189 drm_helper_disable_unused_functions(dev);
4192 /* Switch crtc and encoder back off if necessary */
4193 if (crtc->enabled && dpms_mode != DRM_MODE_DPMS_ON) {
4194 if (encoder->crtc == crtc)
4195 encoder_funcs->dpms(encoder, dpms_mode);
4196 crtc_funcs->dpms(crtc, dpms_mode);
4200 /* Returns the clock of the currently programmed mode of the given pipe. */
4201 static int intel_crtc_clock_get(struct drm_device *dev, struct drm_crtc *crtc)
4203 struct drm_i915_private *dev_priv = dev->dev_private;
4204 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4205 int pipe = intel_crtc->pipe;
4206 u32 dpll = I915_READ((pipe == 0) ? DPLL_A : DPLL_B);
4208 intel_clock_t clock;
4210 if ((dpll & DISPLAY_RATE_SELECT_FPA1) == 0)
4211 fp = I915_READ((pipe == 0) ? FPA0 : FPB0);
4213 fp = I915_READ((pipe == 0) ? FPA1 : FPB1);
4215 clock.m1 = (fp & FP_M1_DIV_MASK) >> FP_M1_DIV_SHIFT;
4216 if (IS_PINEVIEW(dev)) {
4217 clock.n = ffs((fp & FP_N_PINEVIEW_DIV_MASK) >> FP_N_DIV_SHIFT) - 1;
4218 clock.m2 = (fp & FP_M2_PINEVIEW_DIV_MASK) >> FP_M2_DIV_SHIFT;
4220 clock.n = (fp & FP_N_DIV_MASK) >> FP_N_DIV_SHIFT;
4221 clock.m2 = (fp & FP_M2_DIV_MASK) >> FP_M2_DIV_SHIFT;
4225 if (IS_PINEVIEW(dev))
4226 clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_PINEVIEW) >>
4227 DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW);
4229 clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK) >>
4230 DPLL_FPA01_P1_POST_DIV_SHIFT);
4232 switch (dpll & DPLL_MODE_MASK) {
4233 case DPLLB_MODE_DAC_SERIAL:
4234 clock.p2 = dpll & DPLL_DAC_SERIAL_P2_CLOCK_DIV_5 ?
4237 case DPLLB_MODE_LVDS:
4238 clock.p2 = dpll & DPLLB_LVDS_P2_CLOCK_DIV_7 ?
4242 DRM_DEBUG_KMS("Unknown DPLL mode %08x in programmed "
4243 "mode\n", (int)(dpll & DPLL_MODE_MASK));
4247 /* XXX: Handle the 100Mhz refclk */
4248 intel_clock(dev, 96000, &clock);
4250 bool is_lvds = (pipe == 1) && (I915_READ(LVDS) & LVDS_PORT_EN);
4253 clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830_LVDS) >>
4254 DPLL_FPA01_P1_POST_DIV_SHIFT);
4257 if ((dpll & PLL_REF_INPUT_MASK) ==
4258 PLLB_REF_INPUT_SPREADSPECTRUMIN) {
4259 /* XXX: might not be 66MHz */
4260 intel_clock(dev, 66000, &clock);
4262 intel_clock(dev, 48000, &clock);
4264 if (dpll & PLL_P1_DIVIDE_BY_TWO)
4267 clock.p1 = ((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830) >>
4268 DPLL_FPA01_P1_POST_DIV_SHIFT) + 2;
4270 if (dpll & PLL_P2_DIVIDE_BY_4)
4275 intel_clock(dev, 48000, &clock);
4279 /* XXX: It would be nice to validate the clocks, but we can't reuse
4280 * i830PllIsValid() because it relies on the xf86_config connector
4281 * configuration being accurate, which it isn't necessarily.
4287 /** Returns the currently programmed mode of the given pipe. */
4288 struct drm_display_mode *intel_crtc_mode_get(struct drm_device *dev,
4289 struct drm_crtc *crtc)
4291 struct drm_i915_private *dev_priv = dev->dev_private;
4292 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4293 int pipe = intel_crtc->pipe;
4294 struct drm_display_mode *mode;
4295 int htot = I915_READ((pipe == 0) ? HTOTAL_A : HTOTAL_B);
4296 int hsync = I915_READ((pipe == 0) ? HSYNC_A : HSYNC_B);
4297 int vtot = I915_READ((pipe == 0) ? VTOTAL_A : VTOTAL_B);
4298 int vsync = I915_READ((pipe == 0) ? VSYNC_A : VSYNC_B);
4300 mode = kzalloc(sizeof(*mode), GFP_KERNEL);
4304 mode->clock = intel_crtc_clock_get(dev, crtc);
4305 mode->hdisplay = (htot & 0xffff) + 1;
4306 mode->htotal = ((htot & 0xffff0000) >> 16) + 1;
4307 mode->hsync_start = (hsync & 0xffff) + 1;
4308 mode->hsync_end = ((hsync & 0xffff0000) >> 16) + 1;
4309 mode->vdisplay = (vtot & 0xffff) + 1;
4310 mode->vtotal = ((vtot & 0xffff0000) >> 16) + 1;
4311 mode->vsync_start = (vsync & 0xffff) + 1;
4312 mode->vsync_end = ((vsync & 0xffff0000) >> 16) + 1;
4314 drm_mode_set_name(mode);
4315 drm_mode_set_crtcinfo(mode, 0);
4320 #define GPU_IDLE_TIMEOUT 500 /* ms */
4322 /* When this timer fires, we've been idle for awhile */
4323 static void intel_gpu_idle_timer(unsigned long arg)
4325 struct drm_device *dev = (struct drm_device *)arg;
4326 drm_i915_private_t *dev_priv = dev->dev_private;
4328 DRM_DEBUG_DRIVER("idle timer fired, downclocking\n");
4330 dev_priv->busy = false;
4332 queue_work(dev_priv->wq, &dev_priv->idle_work);
4335 #define CRTC_IDLE_TIMEOUT 1000 /* ms */
4337 static void intel_crtc_idle_timer(unsigned long arg)
4339 struct intel_crtc *intel_crtc = (struct intel_crtc *)arg;
4340 struct drm_crtc *crtc = &intel_crtc->base;
4341 drm_i915_private_t *dev_priv = crtc->dev->dev_private;
4343 DRM_DEBUG_DRIVER("idle timer fired, downclocking\n");
4345 intel_crtc->busy = false;
4347 queue_work(dev_priv->wq, &dev_priv->idle_work);
4350 static void intel_increase_pllclock(struct drm_crtc *crtc, bool schedule)
4352 struct drm_device *dev = crtc->dev;
4353 drm_i915_private_t *dev_priv = dev->dev_private;
4354 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4355 int pipe = intel_crtc->pipe;
4356 int dpll_reg = (pipe == 0) ? DPLL_A : DPLL_B;
4357 int dpll = I915_READ(dpll_reg);
4359 if (HAS_PCH_SPLIT(dev))
4362 if (!dev_priv->lvds_downclock_avail)
4365 if (!HAS_PIPE_CXSR(dev) && (dpll & DISPLAY_RATE_SELECT_FPA1)) {
4366 DRM_DEBUG_DRIVER("upclocking LVDS\n");
4368 /* Unlock panel regs */
4369 I915_WRITE(PP_CONTROL, I915_READ(PP_CONTROL) | (0xabcd << 16));
4371 dpll &= ~DISPLAY_RATE_SELECT_FPA1;
4372 I915_WRITE(dpll_reg, dpll);
4373 dpll = I915_READ(dpll_reg);
4374 intel_wait_for_vblank(dev);
4375 dpll = I915_READ(dpll_reg);
4376 if (dpll & DISPLAY_RATE_SELECT_FPA1)
4377 DRM_DEBUG_DRIVER("failed to upclock LVDS!\n");
4379 /* ...and lock them again */
4380 I915_WRITE(PP_CONTROL, I915_READ(PP_CONTROL) & 0x3);
4383 /* Schedule downclock */
4385 mod_timer(&intel_crtc->idle_timer, jiffies +
4386 msecs_to_jiffies(CRTC_IDLE_TIMEOUT));
4389 static void intel_decrease_pllclock(struct drm_crtc *crtc)
4391 struct drm_device *dev = crtc->dev;
4392 drm_i915_private_t *dev_priv = dev->dev_private;
4393 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4394 int pipe = intel_crtc->pipe;
4395 int dpll_reg = (pipe == 0) ? DPLL_A : DPLL_B;
4396 int dpll = I915_READ(dpll_reg);
4398 if (HAS_PCH_SPLIT(dev))
4401 if (!dev_priv->lvds_downclock_avail)
4405 * Since this is called by a timer, we should never get here in
4408 if (!HAS_PIPE_CXSR(dev) && intel_crtc->lowfreq_avail) {
4409 DRM_DEBUG_DRIVER("downclocking LVDS\n");
4411 /* Unlock panel regs */
4412 I915_WRITE(PP_CONTROL, I915_READ(PP_CONTROL) | (0xabcd << 16));
4414 dpll |= DISPLAY_RATE_SELECT_FPA1;
4415 I915_WRITE(dpll_reg, dpll);
4416 dpll = I915_READ(dpll_reg);
4417 intel_wait_for_vblank(dev);
4418 dpll = I915_READ(dpll_reg);
4419 if (!(dpll & DISPLAY_RATE_SELECT_FPA1))
4420 DRM_DEBUG_DRIVER("failed to downclock LVDS!\n");
4422 /* ...and lock them again */
4423 I915_WRITE(PP_CONTROL, I915_READ(PP_CONTROL) & 0x3);
4429 * intel_idle_update - adjust clocks for idleness
4430 * @work: work struct
4432 * Either the GPU or display (or both) went idle. Check the busy status
4433 * here and adjust the CRTC and GPU clocks as necessary.
4435 static void intel_idle_update(struct work_struct *work)
4437 drm_i915_private_t *dev_priv = container_of(work, drm_i915_private_t,
4439 struct drm_device *dev = dev_priv->dev;
4440 struct drm_crtc *crtc;
4441 struct intel_crtc *intel_crtc;
4443 if (!i915_powersave)
4446 mutex_lock(&dev->struct_mutex);
4448 if (IS_I945G(dev) || IS_I945GM(dev)) {
4449 DRM_DEBUG_DRIVER("enable memory self refresh on 945\n");
4450 I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN_MASK | FW_BLC_SELF_EN);
4453 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
4454 /* Skip inactive CRTCs */
4458 intel_crtc = to_intel_crtc(crtc);
4459 if (!intel_crtc->busy)
4460 intel_decrease_pllclock(crtc);
4463 mutex_unlock(&dev->struct_mutex);
4467 * intel_mark_busy - mark the GPU and possibly the display busy
4469 * @obj: object we're operating on
4471 * Callers can use this function to indicate that the GPU is busy processing
4472 * commands. If @obj matches one of the CRTC objects (i.e. it's a scanout
4473 * buffer), we'll also mark the display as busy, so we know to increase its
4476 void intel_mark_busy(struct drm_device *dev, struct drm_gem_object *obj)
4478 drm_i915_private_t *dev_priv = dev->dev_private;
4479 struct drm_crtc *crtc = NULL;
4480 struct intel_framebuffer *intel_fb;
4481 struct intel_crtc *intel_crtc;
4483 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4486 if (!dev_priv->busy) {
4487 if (IS_I945G(dev) || IS_I945GM(dev)) {
4490 DRM_DEBUG_DRIVER("disable memory self refresh on 945\n");
4491 fw_blc_self = I915_READ(FW_BLC_SELF);
4492 fw_blc_self &= ~FW_BLC_SELF_EN;
4493 I915_WRITE(FW_BLC_SELF, fw_blc_self | FW_BLC_SELF_EN_MASK);
4495 dev_priv->busy = true;
4497 mod_timer(&dev_priv->idle_timer, jiffies +
4498 msecs_to_jiffies(GPU_IDLE_TIMEOUT));
4500 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
4504 intel_crtc = to_intel_crtc(crtc);
4505 intel_fb = to_intel_framebuffer(crtc->fb);
4506 if (intel_fb->obj == obj) {
4507 if (!intel_crtc->busy) {
4508 if (IS_I945G(dev) || IS_I945GM(dev)) {
4511 DRM_DEBUG_DRIVER("disable memory self refresh on 945\n");
4512 fw_blc_self = I915_READ(FW_BLC_SELF);
4513 fw_blc_self &= ~FW_BLC_SELF_EN;
4514 I915_WRITE(FW_BLC_SELF, fw_blc_self | FW_BLC_SELF_EN_MASK);
4516 /* Non-busy -> busy, upclock */
4517 intel_increase_pllclock(crtc, true);
4518 intel_crtc->busy = true;
4520 /* Busy -> busy, put off timer */
4521 mod_timer(&intel_crtc->idle_timer, jiffies +
4522 msecs_to_jiffies(CRTC_IDLE_TIMEOUT));
4528 static void intel_crtc_destroy(struct drm_crtc *crtc)
4530 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4532 drm_crtc_cleanup(crtc);
4536 struct intel_unpin_work {
4537 struct work_struct work;
4538 struct drm_device *dev;
4539 struct drm_gem_object *old_fb_obj;
4540 struct drm_gem_object *pending_flip_obj;
4541 struct drm_pending_vblank_event *event;
4545 static void intel_unpin_work_fn(struct work_struct *__work)
4547 struct intel_unpin_work *work =
4548 container_of(__work, struct intel_unpin_work, work);
4550 mutex_lock(&work->dev->struct_mutex);
4551 i915_gem_object_unpin(work->old_fb_obj);
4552 drm_gem_object_unreference(work->pending_flip_obj);
4553 drm_gem_object_unreference(work->old_fb_obj);
4554 mutex_unlock(&work->dev->struct_mutex);
4558 void intel_finish_page_flip(struct drm_device *dev, int pipe)
4560 drm_i915_private_t *dev_priv = dev->dev_private;
4561 struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe];
4562 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4563 struct intel_unpin_work *work;
4564 struct drm_i915_gem_object *obj_priv;
4565 struct drm_pending_vblank_event *e;
4567 unsigned long flags;
4569 /* Ignore early vblank irqs */
4570 if (intel_crtc == NULL)
4573 spin_lock_irqsave(&dev->event_lock, flags);
4574 work = intel_crtc->unpin_work;
4575 if (work == NULL || !work->pending) {
4576 if (work && !work->pending) {
4577 obj_priv = to_intel_bo(work->pending_flip_obj);
4578 DRM_DEBUG_DRIVER("flip finish: %p (%d) not pending?\n",
4580 atomic_read(&obj_priv->pending_flip));
4582 spin_unlock_irqrestore(&dev->event_lock, flags);
4586 intel_crtc->unpin_work = NULL;
4587 drm_vblank_put(dev, intel_crtc->pipe);
4591 do_gettimeofday(&now);
4592 e->event.sequence = drm_vblank_count(dev, intel_crtc->pipe);
4593 e->event.tv_sec = now.tv_sec;
4594 e->event.tv_usec = now.tv_usec;
4595 list_add_tail(&e->base.link,
4596 &e->base.file_priv->event_list);
4597 wake_up_interruptible(&e->base.file_priv->event_wait);
4600 spin_unlock_irqrestore(&dev->event_lock, flags);
4602 obj_priv = to_intel_bo(work->pending_flip_obj);
4604 /* Initial scanout buffer will have a 0 pending flip count */
4605 if ((atomic_read(&obj_priv->pending_flip) == 0) ||
4606 atomic_dec_and_test(&obj_priv->pending_flip))
4607 DRM_WAKEUP(&dev_priv->pending_flip_queue);
4608 schedule_work(&work->work);
4611 void intel_prepare_page_flip(struct drm_device *dev, int plane)
4613 drm_i915_private_t *dev_priv = dev->dev_private;
4614 struct intel_crtc *intel_crtc =
4615 to_intel_crtc(dev_priv->plane_to_crtc_mapping[plane]);
4616 unsigned long flags;
4618 spin_lock_irqsave(&dev->event_lock, flags);
4619 if (intel_crtc->unpin_work) {
4620 intel_crtc->unpin_work->pending = 1;
4622 DRM_DEBUG_DRIVER("preparing flip with no unpin work?\n");
4624 spin_unlock_irqrestore(&dev->event_lock, flags);
4627 static int intel_crtc_page_flip(struct drm_crtc *crtc,
4628 struct drm_framebuffer *fb,
4629 struct drm_pending_vblank_event *event)
4631 struct drm_device *dev = crtc->dev;
4632 struct drm_i915_private *dev_priv = dev->dev_private;
4633 struct intel_framebuffer *intel_fb;
4634 struct drm_i915_gem_object *obj_priv;
4635 struct drm_gem_object *obj;
4636 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4637 struct intel_unpin_work *work;
4638 unsigned long flags;
4639 int pipesrc_reg = (intel_crtc->pipe == 0) ? PIPEASRC : PIPEBSRC;
4642 work = kzalloc(sizeof *work, GFP_KERNEL);
4646 mutex_lock(&dev->struct_mutex);
4648 work->event = event;
4649 work->dev = crtc->dev;
4650 intel_fb = to_intel_framebuffer(crtc->fb);
4651 work->old_fb_obj = intel_fb->obj;
4652 INIT_WORK(&work->work, intel_unpin_work_fn);
4654 /* We borrow the event spin lock for protecting unpin_work */
4655 spin_lock_irqsave(&dev->event_lock, flags);
4656 if (intel_crtc->unpin_work) {
4657 DRM_DEBUG_DRIVER("flip queue: crtc already busy\n");
4658 spin_unlock_irqrestore(&dev->event_lock, flags);
4660 mutex_unlock(&dev->struct_mutex);
4663 intel_crtc->unpin_work = work;
4664 spin_unlock_irqrestore(&dev->event_lock, flags);
4666 intel_fb = to_intel_framebuffer(fb);
4667 obj = intel_fb->obj;
4669 ret = intel_pin_and_fence_fb_obj(dev, obj);
4671 DRM_DEBUG_DRIVER("flip queue: %p pin & fence failed\n",
4674 intel_crtc->unpin_work = NULL;
4675 mutex_unlock(&dev->struct_mutex);
4679 /* Reference the objects for the scheduled work. */
4680 drm_gem_object_reference(work->old_fb_obj);
4681 drm_gem_object_reference(obj);
4684 i915_gem_object_flush_write_domain(obj);
4685 drm_vblank_get(dev, intel_crtc->pipe);
4686 obj_priv = to_intel_bo(obj);
4687 atomic_inc(&obj_priv->pending_flip);
4688 work->pending_flip_obj = obj;
4691 OUT_RING(MI_DISPLAY_FLIP |
4692 MI_DISPLAY_FLIP_PLANE(intel_crtc->plane));
4693 OUT_RING(fb->pitch);
4694 if (IS_I965G(dev)) {
4695 OUT_RING(obj_priv->gtt_offset | obj_priv->tiling_mode);
4696 pipesrc = I915_READ(pipesrc_reg);
4697 OUT_RING(pipesrc & 0x0fff0fff);
4699 OUT_RING(obj_priv->gtt_offset);
4704 mutex_unlock(&dev->struct_mutex);
4709 static const struct drm_crtc_helper_funcs intel_helper_funcs = {
4710 .dpms = intel_crtc_dpms,
4711 .mode_fixup = intel_crtc_mode_fixup,
4712 .mode_set = intel_crtc_mode_set,
4713 .mode_set_base = intel_pipe_set_base,
4714 .prepare = intel_crtc_prepare,
4715 .commit = intel_crtc_commit,
4716 .load_lut = intel_crtc_load_lut,
4719 static const struct drm_crtc_funcs intel_crtc_funcs = {
4720 .cursor_set = intel_crtc_cursor_set,
4721 .cursor_move = intel_crtc_cursor_move,
4722 .gamma_set = intel_crtc_gamma_set,
4723 .set_config = drm_crtc_helper_set_config,
4724 .destroy = intel_crtc_destroy,
4725 .page_flip = intel_crtc_page_flip,
4729 static void intel_crtc_init(struct drm_device *dev, int pipe)
4731 drm_i915_private_t *dev_priv = dev->dev_private;
4732 struct intel_crtc *intel_crtc;
4735 intel_crtc = kzalloc(sizeof(struct intel_crtc) + (INTELFB_CONN_LIMIT * sizeof(struct drm_connector *)), GFP_KERNEL);
4736 if (intel_crtc == NULL)
4739 drm_crtc_init(dev, &intel_crtc->base, &intel_crtc_funcs);
4741 drm_mode_crtc_set_gamma_size(&intel_crtc->base, 256);
4742 intel_crtc->pipe = pipe;
4743 intel_crtc->plane = pipe;
4744 for (i = 0; i < 256; i++) {
4745 intel_crtc->lut_r[i] = i;
4746 intel_crtc->lut_g[i] = i;
4747 intel_crtc->lut_b[i] = i;
4750 /* Swap pipes & planes for FBC on pre-965 */
4751 intel_crtc->pipe = pipe;
4752 intel_crtc->plane = pipe;
4753 if (IS_MOBILE(dev) && (IS_I9XX(dev) && !IS_I965G(dev))) {
4754 DRM_DEBUG_KMS("swapping pipes & planes for FBC\n");
4755 intel_crtc->plane = ((pipe == 0) ? 1 : 0);
4758 BUG_ON(pipe >= ARRAY_SIZE(dev_priv->plane_to_crtc_mapping) ||
4759 dev_priv->plane_to_crtc_mapping[intel_crtc->plane] != NULL);
4760 dev_priv->plane_to_crtc_mapping[intel_crtc->plane] = &intel_crtc->base;
4761 dev_priv->pipe_to_crtc_mapping[intel_crtc->pipe] = &intel_crtc->base;
4763 intel_crtc->cursor_addr = 0;
4764 intel_crtc->dpms_mode = DRM_MODE_DPMS_OFF;
4765 drm_crtc_helper_add(&intel_crtc->base, &intel_helper_funcs);
4767 intel_crtc->busy = false;
4769 setup_timer(&intel_crtc->idle_timer, intel_crtc_idle_timer,
4770 (unsigned long)intel_crtc);
4773 int intel_get_pipe_from_crtc_id(struct drm_device *dev, void *data,
4774 struct drm_file *file_priv)
4776 drm_i915_private_t *dev_priv = dev->dev_private;
4777 struct drm_i915_get_pipe_from_crtc_id *pipe_from_crtc_id = data;
4778 struct drm_mode_object *drmmode_obj;
4779 struct intel_crtc *crtc;
4782 DRM_ERROR("called with no initialization\n");
4786 drmmode_obj = drm_mode_object_find(dev, pipe_from_crtc_id->crtc_id,
4787 DRM_MODE_OBJECT_CRTC);
4790 DRM_ERROR("no such CRTC id\n");
4794 crtc = to_intel_crtc(obj_to_crtc(drmmode_obj));
4795 pipe_from_crtc_id->pipe = crtc->pipe;
4800 struct drm_crtc *intel_get_crtc_from_pipe(struct drm_device *dev, int pipe)
4802 struct drm_crtc *crtc = NULL;
4804 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
4805 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4806 if (intel_crtc->pipe == pipe)
4812 static int intel_encoder_clones(struct drm_device *dev, int type_mask)
4815 struct drm_encoder *encoder;
4818 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
4819 struct intel_encoder *intel_encoder = enc_to_intel_encoder(encoder);
4820 if (type_mask & intel_encoder->clone_mask)
4821 index_mask |= (1 << entry);
4828 static void intel_setup_outputs(struct drm_device *dev)
4830 struct drm_i915_private *dev_priv = dev->dev_private;
4831 struct drm_encoder *encoder;
4833 intel_crt_init(dev);
4835 /* Set up integrated LVDS */
4836 if (IS_MOBILE(dev) && !IS_I830(dev))
4837 intel_lvds_init(dev);
4839 if (HAS_PCH_SPLIT(dev)) {
4842 if (IS_MOBILE(dev) && (I915_READ(DP_A) & DP_DETECTED))
4843 intel_dp_init(dev, DP_A);
4845 if (I915_READ(HDMIB) & PORT_DETECTED) {
4846 /* PCH SDVOB multiplex with HDMIB */
4847 found = intel_sdvo_init(dev, PCH_SDVOB);
4849 intel_hdmi_init(dev, HDMIB);
4850 if (!found && (I915_READ(PCH_DP_B) & DP_DETECTED))
4851 intel_dp_init(dev, PCH_DP_B);
4854 if (I915_READ(HDMIC) & PORT_DETECTED)
4855 intel_hdmi_init(dev, HDMIC);
4857 if (I915_READ(HDMID) & PORT_DETECTED)
4858 intel_hdmi_init(dev, HDMID);
4860 if (I915_READ(PCH_DP_C) & DP_DETECTED)
4861 intel_dp_init(dev, PCH_DP_C);
4863 if (I915_READ(PCH_DP_D) & DP_DETECTED)
4864 intel_dp_init(dev, PCH_DP_D);
4866 } else if (SUPPORTS_DIGITAL_OUTPUTS(dev)) {
4869 if (I915_READ(SDVOB) & SDVO_DETECTED) {
4870 DRM_DEBUG_KMS("probing SDVOB\n");
4871 found = intel_sdvo_init(dev, SDVOB);
4872 if (!found && SUPPORTS_INTEGRATED_HDMI(dev)) {
4873 DRM_DEBUG_KMS("probing HDMI on SDVOB\n");
4874 intel_hdmi_init(dev, SDVOB);
4877 if (!found && SUPPORTS_INTEGRATED_DP(dev)) {
4878 DRM_DEBUG_KMS("probing DP_B\n");
4879 intel_dp_init(dev, DP_B);
4883 /* Before G4X SDVOC doesn't have its own detect register */
4885 if (I915_READ(SDVOB) & SDVO_DETECTED) {
4886 DRM_DEBUG_KMS("probing SDVOC\n");
4887 found = intel_sdvo_init(dev, SDVOC);
4890 if (!found && (I915_READ(SDVOC) & SDVO_DETECTED)) {
4892 if (SUPPORTS_INTEGRATED_HDMI(dev)) {
4893 DRM_DEBUG_KMS("probing HDMI on SDVOC\n");
4894 intel_hdmi_init(dev, SDVOC);
4896 if (SUPPORTS_INTEGRATED_DP(dev)) {
4897 DRM_DEBUG_KMS("probing DP_C\n");
4898 intel_dp_init(dev, DP_C);
4902 if (SUPPORTS_INTEGRATED_DP(dev) &&
4903 (I915_READ(DP_D) & DP_DETECTED)) {
4904 DRM_DEBUG_KMS("probing DP_D\n");
4905 intel_dp_init(dev, DP_D);
4907 } else if (IS_GEN2(dev))
4908 intel_dvo_init(dev);
4910 if (SUPPORTS_TV(dev))
4913 list_for_each_entry(encoder, &dev->mode_config.encoder_list, head) {
4914 struct intel_encoder *intel_encoder = enc_to_intel_encoder(encoder);
4916 encoder->possible_crtcs = intel_encoder->crtc_mask;
4917 encoder->possible_clones = intel_encoder_clones(dev,
4918 intel_encoder->clone_mask);
4922 static void intel_user_framebuffer_destroy(struct drm_framebuffer *fb)
4924 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
4926 drm_framebuffer_cleanup(fb);
4927 drm_gem_object_unreference_unlocked(intel_fb->obj);
4932 static int intel_user_framebuffer_create_handle(struct drm_framebuffer *fb,
4933 struct drm_file *file_priv,
4934 unsigned int *handle)
4936 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
4937 struct drm_gem_object *object = intel_fb->obj;
4939 return drm_gem_handle_create(file_priv, object, handle);
4942 static const struct drm_framebuffer_funcs intel_fb_funcs = {
4943 .destroy = intel_user_framebuffer_destroy,
4944 .create_handle = intel_user_framebuffer_create_handle,
4947 int intel_framebuffer_init(struct drm_device *dev,
4948 struct intel_framebuffer *intel_fb,
4949 struct drm_mode_fb_cmd *mode_cmd,
4950 struct drm_gem_object *obj)
4954 ret = drm_framebuffer_init(dev, &intel_fb->base, &intel_fb_funcs);
4956 DRM_ERROR("framebuffer init failed %d\n", ret);
4960 drm_helper_mode_fill_fb_struct(&intel_fb->base, mode_cmd);
4961 intel_fb->obj = obj;
4965 static struct drm_framebuffer *
4966 intel_user_framebuffer_create(struct drm_device *dev,
4967 struct drm_file *filp,
4968 struct drm_mode_fb_cmd *mode_cmd)
4970 struct drm_gem_object *obj;
4971 struct intel_framebuffer *intel_fb;
4974 obj = drm_gem_object_lookup(dev, filp, mode_cmd->handle);
4978 intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
4982 ret = intel_framebuffer_init(dev, intel_fb,
4985 drm_gem_object_unreference_unlocked(obj);
4990 return &intel_fb->base;
4993 static const struct drm_mode_config_funcs intel_mode_funcs = {
4994 .fb_create = intel_user_framebuffer_create,
4995 .output_poll_changed = intel_fb_output_poll_changed,
4998 static struct drm_gem_object *
4999 intel_alloc_power_context(struct drm_device *dev)
5001 struct drm_gem_object *pwrctx;
5004 pwrctx = i915_gem_alloc_object(dev, 4096);
5006 DRM_DEBUG("failed to alloc power context, RC6 disabled\n");
5010 mutex_lock(&dev->struct_mutex);
5011 ret = i915_gem_object_pin(pwrctx, 4096);
5013 DRM_ERROR("failed to pin power context: %d\n", ret);
5017 ret = i915_gem_object_set_to_gtt_domain(pwrctx, 1);
5019 DRM_ERROR("failed to set-domain on power context: %d\n", ret);
5022 mutex_unlock(&dev->struct_mutex);
5027 i915_gem_object_unpin(pwrctx);
5029 drm_gem_object_unreference(pwrctx);
5030 mutex_unlock(&dev->struct_mutex);
5034 void ironlake_enable_drps(struct drm_device *dev)
5036 struct drm_i915_private *dev_priv = dev->dev_private;
5037 u32 rgvmodectl = I915_READ(MEMMODECTL), rgvswctl;
5038 u8 fmax, fmin, fstart, vstart;
5041 /* 100ms RC evaluation intervals */
5042 I915_WRITE(RCUPEI, 100000);
5043 I915_WRITE(RCDNEI, 100000);
5045 /* Set max/min thresholds to 90ms and 80ms respectively */
5046 I915_WRITE(RCBMAXAVG, 90000);
5047 I915_WRITE(RCBMINAVG, 80000);
5049 I915_WRITE(MEMIHYST, 1);
5051 /* Set up min, max, and cur for interrupt handling */
5052 fmax = (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT;
5053 fmin = (rgvmodectl & MEMMODE_FMIN_MASK);
5054 fstart = (rgvmodectl & MEMMODE_FSTART_MASK) >>
5055 MEMMODE_FSTART_SHIFT;
5056 vstart = (I915_READ(PXVFREQ_BASE + (fstart * 4)) & PXVFREQ_PX_MASK) >>
5059 dev_priv->max_delay = fstart; /* can't go to fmax w/o IPS */
5060 dev_priv->min_delay = fmin;
5061 dev_priv->cur_delay = fstart;
5063 I915_WRITE(MEMINTREN, MEMINT_CX_SUPR_EN | MEMINT_EVAL_CHG_EN);
5066 * Interrupts will be enabled in ironlake_irq_postinstall
5069 I915_WRITE(VIDSTART, vstart);
5070 POSTING_READ(VIDSTART);
5072 rgvmodectl |= MEMMODE_SWMODE_EN;
5073 I915_WRITE(MEMMODECTL, rgvmodectl);
5075 while (I915_READ(MEMSWCTL) & MEMCTL_CMD_STS) {
5077 DRM_ERROR("stuck trying to change perf mode\n");
5084 rgvswctl = (MEMCTL_CMD_CHFREQ << MEMCTL_CMD_SHIFT) |
5085 (fstart << MEMCTL_FREQ_SHIFT) | MEMCTL_SFCAVM;
5086 I915_WRITE(MEMSWCTL, rgvswctl);
5087 POSTING_READ(MEMSWCTL);
5089 rgvswctl |= MEMCTL_CMD_STS;
5090 I915_WRITE(MEMSWCTL, rgvswctl);
5093 void ironlake_disable_drps(struct drm_device *dev)
5095 struct drm_i915_private *dev_priv = dev->dev_private;
5099 /* Ack interrupts, disable EFC interrupt */
5100 I915_WRITE(MEMINTREN, I915_READ(MEMINTREN) & ~MEMINT_EVAL_CHG_EN);
5101 I915_WRITE(MEMINTRSTS, MEMINT_EVAL_CHG);
5102 I915_WRITE(DEIER, I915_READ(DEIER) & ~DE_PCU_EVENT);
5103 I915_WRITE(DEIIR, DE_PCU_EVENT);
5104 I915_WRITE(DEIMR, I915_READ(DEIMR) | DE_PCU_EVENT);
5106 /* Go back to the starting frequency */
5107 fstart = (I915_READ(MEMMODECTL) & MEMMODE_FSTART_MASK) >>
5108 MEMMODE_FSTART_SHIFT;
5109 rgvswctl = (MEMCTL_CMD_CHFREQ << MEMCTL_CMD_SHIFT) |
5110 (fstart << MEMCTL_FREQ_SHIFT) | MEMCTL_SFCAVM;
5111 I915_WRITE(MEMSWCTL, rgvswctl);
5113 rgvswctl |= MEMCTL_CMD_STS;
5114 I915_WRITE(MEMSWCTL, rgvswctl);
5119 void intel_init_clock_gating(struct drm_device *dev)
5121 struct drm_i915_private *dev_priv = dev->dev_private;
5124 * Disable clock gating reported to work incorrectly according to the
5125 * specs, but enable as much else as we can.
5127 if (HAS_PCH_SPLIT(dev)) {
5128 uint32_t dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE;
5130 if (IS_IRONLAKE(dev)) {
5131 /* Required for FBC */
5132 dspclk_gate |= DPFDUNIT_CLOCK_GATE_DISABLE;
5133 /* Required for CxSR */
5134 dspclk_gate |= DPARBUNIT_CLOCK_GATE_DISABLE;
5136 I915_WRITE(PCH_3DCGDIS0,
5137 MARIUNIT_CLOCK_GATE_DISABLE |
5138 SVSMUNIT_CLOCK_GATE_DISABLE);
5141 I915_WRITE(PCH_DSPCLK_GATE_D, dspclk_gate);
5144 * According to the spec the following bits should be set in
5145 * order to enable memory self-refresh
5146 * The bit 22/21 of 0x42004
5147 * The bit 5 of 0x42020
5148 * The bit 15 of 0x45000
5150 if (IS_IRONLAKE(dev)) {
5151 I915_WRITE(ILK_DISPLAY_CHICKEN2,
5152 (I915_READ(ILK_DISPLAY_CHICKEN2) |
5153 ILK_DPARB_GATE | ILK_VSDPFD_FULL));
5154 I915_WRITE(ILK_DSPCLK_GATE,
5155 (I915_READ(ILK_DSPCLK_GATE) |
5156 ILK_DPARB_CLK_GATE));
5157 I915_WRITE(DISP_ARB_CTL,
5158 (I915_READ(DISP_ARB_CTL) |
5162 } else if (IS_G4X(dev)) {
5163 uint32_t dspclk_gate;
5164 I915_WRITE(RENCLK_GATE_D1, 0);
5165 I915_WRITE(RENCLK_GATE_D2, VF_UNIT_CLOCK_GATE_DISABLE |
5166 GS_UNIT_CLOCK_GATE_DISABLE |
5167 CL_UNIT_CLOCK_GATE_DISABLE);
5168 I915_WRITE(RAMCLK_GATE_D, 0);
5169 dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE |
5170 OVRUNIT_CLOCK_GATE_DISABLE |
5171 OVCUNIT_CLOCK_GATE_DISABLE;
5173 dspclk_gate |= DSSUNIT_CLOCK_GATE_DISABLE;
5174 I915_WRITE(DSPCLK_GATE_D, dspclk_gate);
5175 } else if (IS_I965GM(dev)) {
5176 I915_WRITE(RENCLK_GATE_D1, I965_RCC_CLOCK_GATE_DISABLE);
5177 I915_WRITE(RENCLK_GATE_D2, 0);
5178 I915_WRITE(DSPCLK_GATE_D, 0);
5179 I915_WRITE(RAMCLK_GATE_D, 0);
5180 I915_WRITE16(DEUC, 0);
5181 } else if (IS_I965G(dev)) {
5182 I915_WRITE(RENCLK_GATE_D1, I965_RCZ_CLOCK_GATE_DISABLE |
5183 I965_RCC_CLOCK_GATE_DISABLE |
5184 I965_RCPB_CLOCK_GATE_DISABLE |
5185 I965_ISC_CLOCK_GATE_DISABLE |
5186 I965_FBC_CLOCK_GATE_DISABLE);
5187 I915_WRITE(RENCLK_GATE_D2, 0);
5188 } else if (IS_I9XX(dev)) {
5189 u32 dstate = I915_READ(D_STATE);
5191 dstate |= DSTATE_PLL_D3_OFF | DSTATE_GFX_CLOCK_GATING |
5192 DSTATE_DOT_CLOCK_GATING;
5193 I915_WRITE(D_STATE, dstate);
5194 } else if (IS_I85X(dev) || IS_I865G(dev)) {
5195 I915_WRITE(RENCLK_GATE_D1, SV_CLOCK_GATE_DISABLE);
5196 } else if (IS_I830(dev)) {
5197 I915_WRITE(DSPCLK_GATE_D, OVRUNIT_CLOCK_GATE_DISABLE);
5201 * GPU can automatically power down the render unit if given a page
5204 if (I915_HAS_RC6(dev) && drm_core_check_feature(dev, DRIVER_MODESET)) {
5205 struct drm_i915_gem_object *obj_priv = NULL;
5207 if (dev_priv->pwrctx) {
5208 obj_priv = to_intel_bo(dev_priv->pwrctx);
5210 struct drm_gem_object *pwrctx;
5212 pwrctx = intel_alloc_power_context(dev);
5214 dev_priv->pwrctx = pwrctx;
5215 obj_priv = to_intel_bo(pwrctx);
5220 I915_WRITE(PWRCTXA, obj_priv->gtt_offset | PWRCTX_EN);
5221 I915_WRITE(MCHBAR_RENDER_STANDBY,
5222 I915_READ(MCHBAR_RENDER_STANDBY) & ~RCX_SW_EXIT);
5227 /* Set up chip specific display functions */
5228 static void intel_init_display(struct drm_device *dev)
5230 struct drm_i915_private *dev_priv = dev->dev_private;
5232 /* We always want a DPMS function */
5233 if (HAS_PCH_SPLIT(dev))
5234 dev_priv->display.dpms = ironlake_crtc_dpms;
5236 dev_priv->display.dpms = i9xx_crtc_dpms;
5238 if (I915_HAS_FBC(dev)) {
5240 dev_priv->display.fbc_enabled = g4x_fbc_enabled;
5241 dev_priv->display.enable_fbc = g4x_enable_fbc;
5242 dev_priv->display.disable_fbc = g4x_disable_fbc;
5243 } else if (IS_I965GM(dev)) {
5244 dev_priv->display.fbc_enabled = i8xx_fbc_enabled;
5245 dev_priv->display.enable_fbc = i8xx_enable_fbc;
5246 dev_priv->display.disable_fbc = i8xx_disable_fbc;
5248 /* 855GM needs testing */
5251 /* Returns the core display clock speed */
5252 if (IS_I945G(dev) || (IS_G33(dev) && ! IS_PINEVIEW_M(dev)))
5253 dev_priv->display.get_display_clock_speed =
5254 i945_get_display_clock_speed;
5255 else if (IS_I915G(dev))
5256 dev_priv->display.get_display_clock_speed =
5257 i915_get_display_clock_speed;
5258 else if (IS_I945GM(dev) || IS_845G(dev) || IS_PINEVIEW_M(dev))
5259 dev_priv->display.get_display_clock_speed =
5260 i9xx_misc_get_display_clock_speed;
5261 else if (IS_I915GM(dev))
5262 dev_priv->display.get_display_clock_speed =
5263 i915gm_get_display_clock_speed;
5264 else if (IS_I865G(dev))
5265 dev_priv->display.get_display_clock_speed =
5266 i865_get_display_clock_speed;
5267 else if (IS_I85X(dev))
5268 dev_priv->display.get_display_clock_speed =
5269 i855_get_display_clock_speed;
5271 dev_priv->display.get_display_clock_speed =
5272 i830_get_display_clock_speed;
5274 /* For FIFO watermark updates */
5275 if (HAS_PCH_SPLIT(dev)) {
5276 if (IS_IRONLAKE(dev)) {
5277 if (I915_READ(MLTR_ILK) & ILK_SRLT_MASK)
5278 dev_priv->display.update_wm = ironlake_update_wm;
5280 DRM_DEBUG_KMS("Failed to get proper latency. "
5282 dev_priv->display.update_wm = NULL;
5285 dev_priv->display.update_wm = NULL;
5286 } else if (IS_PINEVIEW(dev)) {
5287 if (!intel_get_cxsr_latency(IS_PINEVIEW_G(dev),
5289 dev_priv->mem_freq)) {
5290 DRM_INFO("failed to find known CxSR latency "
5291 "(found fsb freq %d, mem freq %d), "
5293 dev_priv->fsb_freq, dev_priv->mem_freq);
5294 /* Disable CxSR and never update its watermark again */
5295 pineview_disable_cxsr(dev);
5296 dev_priv->display.update_wm = NULL;
5298 dev_priv->display.update_wm = pineview_update_wm;
5299 } else if (IS_G4X(dev))
5300 dev_priv->display.update_wm = g4x_update_wm;
5301 else if (IS_I965G(dev))
5302 dev_priv->display.update_wm = i965_update_wm;
5303 else if (IS_I9XX(dev)) {
5304 dev_priv->display.update_wm = i9xx_update_wm;
5305 dev_priv->display.get_fifo_size = i9xx_get_fifo_size;
5306 } else if (IS_I85X(dev)) {
5307 dev_priv->display.update_wm = i9xx_update_wm;
5308 dev_priv->display.get_fifo_size = i85x_get_fifo_size;
5310 dev_priv->display.update_wm = i830_update_wm;
5312 dev_priv->display.get_fifo_size = i845_get_fifo_size;
5314 dev_priv->display.get_fifo_size = i830_get_fifo_size;
5318 void intel_modeset_init(struct drm_device *dev)
5320 struct drm_i915_private *dev_priv = dev->dev_private;
5324 drm_mode_config_init(dev);
5326 dev->mode_config.min_width = 0;
5327 dev->mode_config.min_height = 0;
5329 dev->mode_config.funcs = (void *)&intel_mode_funcs;
5331 intel_init_display(dev);
5333 if (IS_I965G(dev)) {
5334 dev->mode_config.max_width = 8192;
5335 dev->mode_config.max_height = 8192;
5336 } else if (IS_I9XX(dev)) {
5337 dev->mode_config.max_width = 4096;
5338 dev->mode_config.max_height = 4096;
5340 dev->mode_config.max_width = 2048;
5341 dev->mode_config.max_height = 2048;
5344 /* set memory base */
5346 dev->mode_config.fb_base = pci_resource_start(dev->pdev, 2);
5348 dev->mode_config.fb_base = pci_resource_start(dev->pdev, 0);
5350 if (IS_MOBILE(dev) || IS_I9XX(dev))
5354 DRM_DEBUG_KMS("%d display pipe%s available.\n",
5355 num_pipe, num_pipe > 1 ? "s" : "");
5357 for (i = 0; i < num_pipe; i++) {
5358 intel_crtc_init(dev, i);
5361 intel_setup_outputs(dev);
5363 intel_init_clock_gating(dev);
5365 if (IS_IRONLAKE_M(dev))
5366 ironlake_enable_drps(dev);
5368 INIT_WORK(&dev_priv->idle_work, intel_idle_update);
5369 setup_timer(&dev_priv->idle_timer, intel_gpu_idle_timer,
5370 (unsigned long)dev);
5372 intel_setup_overlay(dev);
5375 void intel_modeset_cleanup(struct drm_device *dev)
5377 struct drm_i915_private *dev_priv = dev->dev_private;
5378 struct drm_crtc *crtc;
5379 struct intel_crtc *intel_crtc;
5381 mutex_lock(&dev->struct_mutex);
5383 drm_kms_helper_poll_fini(dev);
5384 intel_fbdev_fini(dev);
5386 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
5387 /* Skip inactive CRTCs */
5391 intel_crtc = to_intel_crtc(crtc);
5392 intel_increase_pllclock(crtc, false);
5393 del_timer_sync(&intel_crtc->idle_timer);
5396 del_timer_sync(&dev_priv->idle_timer);
5398 if (dev_priv->display.disable_fbc)
5399 dev_priv->display.disable_fbc(dev);
5401 if (dev_priv->pwrctx) {
5402 struct drm_i915_gem_object *obj_priv;
5404 obj_priv = to_intel_bo(dev_priv->pwrctx);
5405 I915_WRITE(PWRCTXA, obj_priv->gtt_offset &~ PWRCTX_EN);
5407 i915_gem_object_unpin(dev_priv->pwrctx);
5408 drm_gem_object_unreference(dev_priv->pwrctx);
5411 if (IS_IRONLAKE_M(dev))
5412 ironlake_disable_drps(dev);
5414 mutex_unlock(&dev->struct_mutex);
5416 drm_mode_config_cleanup(dev);
5421 * Return which encoder is currently attached for connector.
5423 struct drm_encoder *intel_attached_encoder (struct drm_connector *connector)
5425 struct drm_mode_object *obj;
5426 struct drm_encoder *encoder;
5429 for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++) {
5430 if (connector->encoder_ids[i] == 0)
5433 obj = drm_mode_object_find(connector->dev,
5434 connector->encoder_ids[i],
5435 DRM_MODE_OBJECT_ENCODER);
5439 encoder = obj_to_encoder(obj);
5446 * set vga decode state - true == enable VGA decode
5448 int intel_modeset_vga_set_state(struct drm_device *dev, bool state)
5450 struct drm_i915_private *dev_priv = dev->dev_private;
5453 pci_read_config_word(dev_priv->bridge_dev, INTEL_GMCH_CTRL, &gmch_ctrl);
5455 gmch_ctrl &= ~INTEL_GMCH_VGA_DISABLE;
5457 gmch_ctrl |= INTEL_GMCH_VGA_DISABLE;
5458 pci_write_config_word(dev_priv->bridge_dev, INTEL_GMCH_CTRL, gmch_ctrl);