2 * Copyright © 2006-2007 Intel Corporation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
24 * Eric Anholt <eric@anholt.net>
27 #include <linux/module.h>
28 #include <linux/input.h>
29 #include <linux/i2c.h>
30 #include <linux/kernel.h>
32 #include "intel_drv.h"
37 #include "drm_crtc_helper.h"
39 #define HAS_eDP (intel_pipe_has_type(crtc, INTEL_OUTPUT_EDP))
41 bool intel_pipe_has_type (struct drm_crtc
*crtc
, int type
);
42 static void intel_update_watermarks(struct drm_device
*dev
);
43 static void intel_increase_pllclock(struct drm_crtc
*crtc
, bool schedule
);
66 #define INTEL_P2_NUM 2
67 typedef struct intel_limit intel_limit_t
;
69 intel_range_t dot
, vco
, n
, m
, m1
, m2
, p
, p1
;
71 bool (* find_pll
)(const intel_limit_t
*, struct drm_crtc
*,
72 int, int, intel_clock_t
*);
73 bool (* find_reduced_pll
)(const intel_limit_t
*, struct drm_crtc
*,
74 int, int, intel_clock_t
*);
77 #define I8XX_DOT_MIN 25000
78 #define I8XX_DOT_MAX 350000
79 #define I8XX_VCO_MIN 930000
80 #define I8XX_VCO_MAX 1400000
84 #define I8XX_M_MAX 140
85 #define I8XX_M1_MIN 18
86 #define I8XX_M1_MAX 26
88 #define I8XX_M2_MAX 16
90 #define I8XX_P_MAX 128
92 #define I8XX_P1_MAX 33
93 #define I8XX_P1_LVDS_MIN 1
94 #define I8XX_P1_LVDS_MAX 6
95 #define I8XX_P2_SLOW 4
96 #define I8XX_P2_FAST 2
97 #define I8XX_P2_LVDS_SLOW 14
98 #define I8XX_P2_LVDS_FAST 7
99 #define I8XX_P2_SLOW_LIMIT 165000
101 #define I9XX_DOT_MIN 20000
102 #define I9XX_DOT_MAX 400000
103 #define I9XX_VCO_MIN 1400000
104 #define I9XX_VCO_MAX 2800000
105 #define IGD_VCO_MIN 1700000
106 #define IGD_VCO_MAX 3500000
109 /* IGD's Ncounter is a ring counter */
112 #define I9XX_M_MIN 70
113 #define I9XX_M_MAX 120
115 #define IGD_M_MAX 256
116 #define I9XX_M1_MIN 10
117 #define I9XX_M1_MAX 22
118 #define I9XX_M2_MIN 5
119 #define I9XX_M2_MAX 9
120 /* IGD M1 is reserved, and must be 0 */
124 #define IGD_M2_MAX 254
125 #define I9XX_P_SDVO_DAC_MIN 5
126 #define I9XX_P_SDVO_DAC_MAX 80
127 #define I9XX_P_LVDS_MIN 7
128 #define I9XX_P_LVDS_MAX 98
129 #define IGD_P_LVDS_MIN 7
130 #define IGD_P_LVDS_MAX 112
131 #define I9XX_P1_MIN 1
132 #define I9XX_P1_MAX 8
133 #define I9XX_P2_SDVO_DAC_SLOW 10
134 #define I9XX_P2_SDVO_DAC_FAST 5
135 #define I9XX_P2_SDVO_DAC_SLOW_LIMIT 200000
136 #define I9XX_P2_LVDS_SLOW 14
137 #define I9XX_P2_LVDS_FAST 7
138 #define I9XX_P2_LVDS_SLOW_LIMIT 112000
140 /*The parameter is for SDVO on G4x platform*/
141 #define G4X_DOT_SDVO_MIN 25000
142 #define G4X_DOT_SDVO_MAX 270000
143 #define G4X_VCO_MIN 1750000
144 #define G4X_VCO_MAX 3500000
145 #define G4X_N_SDVO_MIN 1
146 #define G4X_N_SDVO_MAX 4
147 #define G4X_M_SDVO_MIN 104
148 #define G4X_M_SDVO_MAX 138
149 #define G4X_M1_SDVO_MIN 17
150 #define G4X_M1_SDVO_MAX 23
151 #define G4X_M2_SDVO_MIN 5
152 #define G4X_M2_SDVO_MAX 11
153 #define G4X_P_SDVO_MIN 10
154 #define G4X_P_SDVO_MAX 30
155 #define G4X_P1_SDVO_MIN 1
156 #define G4X_P1_SDVO_MAX 3
157 #define G4X_P2_SDVO_SLOW 10
158 #define G4X_P2_SDVO_FAST 10
159 #define G4X_P2_SDVO_LIMIT 270000
161 /*The parameter is for HDMI_DAC on G4x platform*/
162 #define G4X_DOT_HDMI_DAC_MIN 22000
163 #define G4X_DOT_HDMI_DAC_MAX 400000
164 #define G4X_N_HDMI_DAC_MIN 1
165 #define G4X_N_HDMI_DAC_MAX 4
166 #define G4X_M_HDMI_DAC_MIN 104
167 #define G4X_M_HDMI_DAC_MAX 138
168 #define G4X_M1_HDMI_DAC_MIN 16
169 #define G4X_M1_HDMI_DAC_MAX 23
170 #define G4X_M2_HDMI_DAC_MIN 5
171 #define G4X_M2_HDMI_DAC_MAX 11
172 #define G4X_P_HDMI_DAC_MIN 5
173 #define G4X_P_HDMI_DAC_MAX 80
174 #define G4X_P1_HDMI_DAC_MIN 1
175 #define G4X_P1_HDMI_DAC_MAX 8
176 #define G4X_P2_HDMI_DAC_SLOW 10
177 #define G4X_P2_HDMI_DAC_FAST 5
178 #define G4X_P2_HDMI_DAC_LIMIT 165000
180 /*The parameter is for SINGLE_CHANNEL_LVDS on G4x platform*/
181 #define G4X_DOT_SINGLE_CHANNEL_LVDS_MIN 20000
182 #define G4X_DOT_SINGLE_CHANNEL_LVDS_MAX 115000
183 #define G4X_N_SINGLE_CHANNEL_LVDS_MIN 1
184 #define G4X_N_SINGLE_CHANNEL_LVDS_MAX 3
185 #define G4X_M_SINGLE_CHANNEL_LVDS_MIN 104
186 #define G4X_M_SINGLE_CHANNEL_LVDS_MAX 138
187 #define G4X_M1_SINGLE_CHANNEL_LVDS_MIN 17
188 #define G4X_M1_SINGLE_CHANNEL_LVDS_MAX 23
189 #define G4X_M2_SINGLE_CHANNEL_LVDS_MIN 5
190 #define G4X_M2_SINGLE_CHANNEL_LVDS_MAX 11
191 #define G4X_P_SINGLE_CHANNEL_LVDS_MIN 28
192 #define G4X_P_SINGLE_CHANNEL_LVDS_MAX 112
193 #define G4X_P1_SINGLE_CHANNEL_LVDS_MIN 2
194 #define G4X_P1_SINGLE_CHANNEL_LVDS_MAX 8
195 #define G4X_P2_SINGLE_CHANNEL_LVDS_SLOW 14
196 #define G4X_P2_SINGLE_CHANNEL_LVDS_FAST 14
197 #define G4X_P2_SINGLE_CHANNEL_LVDS_LIMIT 0
199 /*The parameter is for DUAL_CHANNEL_LVDS on G4x platform*/
200 #define G4X_DOT_DUAL_CHANNEL_LVDS_MIN 80000
201 #define G4X_DOT_DUAL_CHANNEL_LVDS_MAX 224000
202 #define G4X_N_DUAL_CHANNEL_LVDS_MIN 1
203 #define G4X_N_DUAL_CHANNEL_LVDS_MAX 3
204 #define G4X_M_DUAL_CHANNEL_LVDS_MIN 104
205 #define G4X_M_DUAL_CHANNEL_LVDS_MAX 138
206 #define G4X_M1_DUAL_CHANNEL_LVDS_MIN 17
207 #define G4X_M1_DUAL_CHANNEL_LVDS_MAX 23
208 #define G4X_M2_DUAL_CHANNEL_LVDS_MIN 5
209 #define G4X_M2_DUAL_CHANNEL_LVDS_MAX 11
210 #define G4X_P_DUAL_CHANNEL_LVDS_MIN 14
211 #define G4X_P_DUAL_CHANNEL_LVDS_MAX 42
212 #define G4X_P1_DUAL_CHANNEL_LVDS_MIN 2
213 #define G4X_P1_DUAL_CHANNEL_LVDS_MAX 6
214 #define G4X_P2_DUAL_CHANNEL_LVDS_SLOW 7
215 #define G4X_P2_DUAL_CHANNEL_LVDS_FAST 7
216 #define G4X_P2_DUAL_CHANNEL_LVDS_LIMIT 0
218 /*The parameter is for DISPLAY PORT on G4x platform*/
219 #define G4X_DOT_DISPLAY_PORT_MIN 161670
220 #define G4X_DOT_DISPLAY_PORT_MAX 227000
221 #define G4X_N_DISPLAY_PORT_MIN 1
222 #define G4X_N_DISPLAY_PORT_MAX 2
223 #define G4X_M_DISPLAY_PORT_MIN 97
224 #define G4X_M_DISPLAY_PORT_MAX 108
225 #define G4X_M1_DISPLAY_PORT_MIN 0x10
226 #define G4X_M1_DISPLAY_PORT_MAX 0x12
227 #define G4X_M2_DISPLAY_PORT_MIN 0x05
228 #define G4X_M2_DISPLAY_PORT_MAX 0x06
229 #define G4X_P_DISPLAY_PORT_MIN 10
230 #define G4X_P_DISPLAY_PORT_MAX 20
231 #define G4X_P1_DISPLAY_PORT_MIN 1
232 #define G4X_P1_DISPLAY_PORT_MAX 2
233 #define G4X_P2_DISPLAY_PORT_SLOW 10
234 #define G4X_P2_DISPLAY_PORT_FAST 10
235 #define G4X_P2_DISPLAY_PORT_LIMIT 0
238 /* as we calculate clock using (register_value + 2) for
239 N/M1/M2, so here the range value for them is (actual_value-2).
241 #define IGDNG_DOT_MIN 25000
242 #define IGDNG_DOT_MAX 350000
243 #define IGDNG_VCO_MIN 1760000
244 #define IGDNG_VCO_MAX 3510000
245 #define IGDNG_N_MIN 1
246 #define IGDNG_N_MAX 5
247 #define IGDNG_M_MIN 79
248 #define IGDNG_M_MAX 118
249 #define IGDNG_M1_MIN 12
250 #define IGDNG_M1_MAX 23
251 #define IGDNG_M2_MIN 5
252 #define IGDNG_M2_MAX 9
253 #define IGDNG_P_SDVO_DAC_MIN 5
254 #define IGDNG_P_SDVO_DAC_MAX 80
255 #define IGDNG_P_LVDS_MIN 28
256 #define IGDNG_P_LVDS_MAX 112
257 #define IGDNG_P1_MIN 1
258 #define IGDNG_P1_MAX 8
259 #define IGDNG_P2_SDVO_DAC_SLOW 10
260 #define IGDNG_P2_SDVO_DAC_FAST 5
261 #define IGDNG_P2_LVDS_SLOW 14 /* single channel */
262 #define IGDNG_P2_LVDS_FAST 7 /* double channel */
263 #define IGDNG_P2_DOT_LIMIT 225000 /* 225Mhz */
266 intel_find_best_PLL(const intel_limit_t
*limit
, struct drm_crtc
*crtc
,
267 int target
, int refclk
, intel_clock_t
*best_clock
);
269 intel_find_best_reduced_PLL(const intel_limit_t
*limit
, struct drm_crtc
*crtc
,
270 int target
, int refclk
, intel_clock_t
*best_clock
);
272 intel_g4x_find_best_PLL(const intel_limit_t
*limit
, struct drm_crtc
*crtc
,
273 int target
, int refclk
, intel_clock_t
*best_clock
);
275 intel_igdng_find_best_PLL(const intel_limit_t
*limit
, struct drm_crtc
*crtc
,
276 int target
, int refclk
, intel_clock_t
*best_clock
);
279 intel_find_pll_g4x_dp(const intel_limit_t
*, struct drm_crtc
*crtc
,
280 int target
, int refclk
, intel_clock_t
*best_clock
);
282 intel_find_pll_igdng_dp(const intel_limit_t
*, struct drm_crtc
*crtc
,
283 int target
, int refclk
, intel_clock_t
*best_clock
);
285 static const intel_limit_t intel_limits_i8xx_dvo
= {
286 .dot
= { .min
= I8XX_DOT_MIN
, .max
= I8XX_DOT_MAX
},
287 .vco
= { .min
= I8XX_VCO_MIN
, .max
= I8XX_VCO_MAX
},
288 .n
= { .min
= I8XX_N_MIN
, .max
= I8XX_N_MAX
},
289 .m
= { .min
= I8XX_M_MIN
, .max
= I8XX_M_MAX
},
290 .m1
= { .min
= I8XX_M1_MIN
, .max
= I8XX_M1_MAX
},
291 .m2
= { .min
= I8XX_M2_MIN
, .max
= I8XX_M2_MAX
},
292 .p
= { .min
= I8XX_P_MIN
, .max
= I8XX_P_MAX
},
293 .p1
= { .min
= I8XX_P1_MIN
, .max
= I8XX_P1_MAX
},
294 .p2
= { .dot_limit
= I8XX_P2_SLOW_LIMIT
,
295 .p2_slow
= I8XX_P2_SLOW
, .p2_fast
= I8XX_P2_FAST
},
296 .find_pll
= intel_find_best_PLL
,
297 .find_reduced_pll
= intel_find_best_reduced_PLL
,
300 static const intel_limit_t intel_limits_i8xx_lvds
= {
301 .dot
= { .min
= I8XX_DOT_MIN
, .max
= I8XX_DOT_MAX
},
302 .vco
= { .min
= I8XX_VCO_MIN
, .max
= I8XX_VCO_MAX
},
303 .n
= { .min
= I8XX_N_MIN
, .max
= I8XX_N_MAX
},
304 .m
= { .min
= I8XX_M_MIN
, .max
= I8XX_M_MAX
},
305 .m1
= { .min
= I8XX_M1_MIN
, .max
= I8XX_M1_MAX
},
306 .m2
= { .min
= I8XX_M2_MIN
, .max
= I8XX_M2_MAX
},
307 .p
= { .min
= I8XX_P_MIN
, .max
= I8XX_P_MAX
},
308 .p1
= { .min
= I8XX_P1_LVDS_MIN
, .max
= I8XX_P1_LVDS_MAX
},
309 .p2
= { .dot_limit
= I8XX_P2_SLOW_LIMIT
,
310 .p2_slow
= I8XX_P2_LVDS_SLOW
, .p2_fast
= I8XX_P2_LVDS_FAST
},
311 .find_pll
= intel_find_best_PLL
,
312 .find_reduced_pll
= intel_find_best_reduced_PLL
,
315 static const intel_limit_t intel_limits_i9xx_sdvo
= {
316 .dot
= { .min
= I9XX_DOT_MIN
, .max
= I9XX_DOT_MAX
},
317 .vco
= { .min
= I9XX_VCO_MIN
, .max
= I9XX_VCO_MAX
},
318 .n
= { .min
= I9XX_N_MIN
, .max
= I9XX_N_MAX
},
319 .m
= { .min
= I9XX_M_MIN
, .max
= I9XX_M_MAX
},
320 .m1
= { .min
= I9XX_M1_MIN
, .max
= I9XX_M1_MAX
},
321 .m2
= { .min
= I9XX_M2_MIN
, .max
= I9XX_M2_MAX
},
322 .p
= { .min
= I9XX_P_SDVO_DAC_MIN
, .max
= I9XX_P_SDVO_DAC_MAX
},
323 .p1
= { .min
= I9XX_P1_MIN
, .max
= I9XX_P1_MAX
},
324 .p2
= { .dot_limit
= I9XX_P2_SDVO_DAC_SLOW_LIMIT
,
325 .p2_slow
= I9XX_P2_SDVO_DAC_SLOW
, .p2_fast
= I9XX_P2_SDVO_DAC_FAST
},
326 .find_pll
= intel_find_best_PLL
,
327 .find_reduced_pll
= intel_find_best_reduced_PLL
,
330 static const intel_limit_t intel_limits_i9xx_lvds
= {
331 .dot
= { .min
= I9XX_DOT_MIN
, .max
= I9XX_DOT_MAX
},
332 .vco
= { .min
= I9XX_VCO_MIN
, .max
= I9XX_VCO_MAX
},
333 .n
= { .min
= I9XX_N_MIN
, .max
= I9XX_N_MAX
},
334 .m
= { .min
= I9XX_M_MIN
, .max
= I9XX_M_MAX
},
335 .m1
= { .min
= I9XX_M1_MIN
, .max
= I9XX_M1_MAX
},
336 .m2
= { .min
= I9XX_M2_MIN
, .max
= I9XX_M2_MAX
},
337 .p
= { .min
= I9XX_P_LVDS_MIN
, .max
= I9XX_P_LVDS_MAX
},
338 .p1
= { .min
= I9XX_P1_MIN
, .max
= I9XX_P1_MAX
},
339 /* The single-channel range is 25-112Mhz, and dual-channel
340 * is 80-224Mhz. Prefer single channel as much as possible.
342 .p2
= { .dot_limit
= I9XX_P2_LVDS_SLOW_LIMIT
,
343 .p2_slow
= I9XX_P2_LVDS_SLOW
, .p2_fast
= I9XX_P2_LVDS_FAST
},
344 .find_pll
= intel_find_best_PLL
,
345 .find_reduced_pll
= intel_find_best_reduced_PLL
,
348 /* below parameter and function is for G4X Chipset Family*/
349 static const intel_limit_t intel_limits_g4x_sdvo
= {
350 .dot
= { .min
= G4X_DOT_SDVO_MIN
, .max
= G4X_DOT_SDVO_MAX
},
351 .vco
= { .min
= G4X_VCO_MIN
, .max
= G4X_VCO_MAX
},
352 .n
= { .min
= G4X_N_SDVO_MIN
, .max
= G4X_N_SDVO_MAX
},
353 .m
= { .min
= G4X_M_SDVO_MIN
, .max
= G4X_M_SDVO_MAX
},
354 .m1
= { .min
= G4X_M1_SDVO_MIN
, .max
= G4X_M1_SDVO_MAX
},
355 .m2
= { .min
= G4X_M2_SDVO_MIN
, .max
= G4X_M2_SDVO_MAX
},
356 .p
= { .min
= G4X_P_SDVO_MIN
, .max
= G4X_P_SDVO_MAX
},
357 .p1
= { .min
= G4X_P1_SDVO_MIN
, .max
= G4X_P1_SDVO_MAX
},
358 .p2
= { .dot_limit
= G4X_P2_SDVO_LIMIT
,
359 .p2_slow
= G4X_P2_SDVO_SLOW
,
360 .p2_fast
= G4X_P2_SDVO_FAST
362 .find_pll
= intel_g4x_find_best_PLL
,
363 .find_reduced_pll
= intel_g4x_find_best_PLL
,
366 static const intel_limit_t intel_limits_g4x_hdmi
= {
367 .dot
= { .min
= G4X_DOT_HDMI_DAC_MIN
, .max
= G4X_DOT_HDMI_DAC_MAX
},
368 .vco
= { .min
= G4X_VCO_MIN
, .max
= G4X_VCO_MAX
},
369 .n
= { .min
= G4X_N_HDMI_DAC_MIN
, .max
= G4X_N_HDMI_DAC_MAX
},
370 .m
= { .min
= G4X_M_HDMI_DAC_MIN
, .max
= G4X_M_HDMI_DAC_MAX
},
371 .m1
= { .min
= G4X_M1_HDMI_DAC_MIN
, .max
= G4X_M1_HDMI_DAC_MAX
},
372 .m2
= { .min
= G4X_M2_HDMI_DAC_MIN
, .max
= G4X_M2_HDMI_DAC_MAX
},
373 .p
= { .min
= G4X_P_HDMI_DAC_MIN
, .max
= G4X_P_HDMI_DAC_MAX
},
374 .p1
= { .min
= G4X_P1_HDMI_DAC_MIN
, .max
= G4X_P1_HDMI_DAC_MAX
},
375 .p2
= { .dot_limit
= G4X_P2_HDMI_DAC_LIMIT
,
376 .p2_slow
= G4X_P2_HDMI_DAC_SLOW
,
377 .p2_fast
= G4X_P2_HDMI_DAC_FAST
379 .find_pll
= intel_g4x_find_best_PLL
,
380 .find_reduced_pll
= intel_g4x_find_best_PLL
,
383 static const intel_limit_t intel_limits_g4x_single_channel_lvds
= {
384 .dot
= { .min
= G4X_DOT_SINGLE_CHANNEL_LVDS_MIN
,
385 .max
= G4X_DOT_SINGLE_CHANNEL_LVDS_MAX
},
386 .vco
= { .min
= G4X_VCO_MIN
,
387 .max
= G4X_VCO_MAX
},
388 .n
= { .min
= G4X_N_SINGLE_CHANNEL_LVDS_MIN
,
389 .max
= G4X_N_SINGLE_CHANNEL_LVDS_MAX
},
390 .m
= { .min
= G4X_M_SINGLE_CHANNEL_LVDS_MIN
,
391 .max
= G4X_M_SINGLE_CHANNEL_LVDS_MAX
},
392 .m1
= { .min
= G4X_M1_SINGLE_CHANNEL_LVDS_MIN
,
393 .max
= G4X_M1_SINGLE_CHANNEL_LVDS_MAX
},
394 .m2
= { .min
= G4X_M2_SINGLE_CHANNEL_LVDS_MIN
,
395 .max
= G4X_M2_SINGLE_CHANNEL_LVDS_MAX
},
396 .p
= { .min
= G4X_P_SINGLE_CHANNEL_LVDS_MIN
,
397 .max
= G4X_P_SINGLE_CHANNEL_LVDS_MAX
},
398 .p1
= { .min
= G4X_P1_SINGLE_CHANNEL_LVDS_MIN
,
399 .max
= G4X_P1_SINGLE_CHANNEL_LVDS_MAX
},
400 .p2
= { .dot_limit
= G4X_P2_SINGLE_CHANNEL_LVDS_LIMIT
,
401 .p2_slow
= G4X_P2_SINGLE_CHANNEL_LVDS_SLOW
,
402 .p2_fast
= G4X_P2_SINGLE_CHANNEL_LVDS_FAST
404 .find_pll
= intel_g4x_find_best_PLL
,
405 .find_reduced_pll
= intel_g4x_find_best_PLL
,
408 static const intel_limit_t intel_limits_g4x_dual_channel_lvds
= {
409 .dot
= { .min
= G4X_DOT_DUAL_CHANNEL_LVDS_MIN
,
410 .max
= G4X_DOT_DUAL_CHANNEL_LVDS_MAX
},
411 .vco
= { .min
= G4X_VCO_MIN
,
412 .max
= G4X_VCO_MAX
},
413 .n
= { .min
= G4X_N_DUAL_CHANNEL_LVDS_MIN
,
414 .max
= G4X_N_DUAL_CHANNEL_LVDS_MAX
},
415 .m
= { .min
= G4X_M_DUAL_CHANNEL_LVDS_MIN
,
416 .max
= G4X_M_DUAL_CHANNEL_LVDS_MAX
},
417 .m1
= { .min
= G4X_M1_DUAL_CHANNEL_LVDS_MIN
,
418 .max
= G4X_M1_DUAL_CHANNEL_LVDS_MAX
},
419 .m2
= { .min
= G4X_M2_DUAL_CHANNEL_LVDS_MIN
,
420 .max
= G4X_M2_DUAL_CHANNEL_LVDS_MAX
},
421 .p
= { .min
= G4X_P_DUAL_CHANNEL_LVDS_MIN
,
422 .max
= G4X_P_DUAL_CHANNEL_LVDS_MAX
},
423 .p1
= { .min
= G4X_P1_DUAL_CHANNEL_LVDS_MIN
,
424 .max
= G4X_P1_DUAL_CHANNEL_LVDS_MAX
},
425 .p2
= { .dot_limit
= G4X_P2_DUAL_CHANNEL_LVDS_LIMIT
,
426 .p2_slow
= G4X_P2_DUAL_CHANNEL_LVDS_SLOW
,
427 .p2_fast
= G4X_P2_DUAL_CHANNEL_LVDS_FAST
429 .find_pll
= intel_g4x_find_best_PLL
,
430 .find_reduced_pll
= intel_g4x_find_best_PLL
,
433 static const intel_limit_t intel_limits_g4x_display_port
= {
434 .dot
= { .min
= G4X_DOT_DISPLAY_PORT_MIN
,
435 .max
= G4X_DOT_DISPLAY_PORT_MAX
},
436 .vco
= { .min
= G4X_VCO_MIN
,
438 .n
= { .min
= G4X_N_DISPLAY_PORT_MIN
,
439 .max
= G4X_N_DISPLAY_PORT_MAX
},
440 .m
= { .min
= G4X_M_DISPLAY_PORT_MIN
,
441 .max
= G4X_M_DISPLAY_PORT_MAX
},
442 .m1
= { .min
= G4X_M1_DISPLAY_PORT_MIN
,
443 .max
= G4X_M1_DISPLAY_PORT_MAX
},
444 .m2
= { .min
= G4X_M2_DISPLAY_PORT_MIN
,
445 .max
= G4X_M2_DISPLAY_PORT_MAX
},
446 .p
= { .min
= G4X_P_DISPLAY_PORT_MIN
,
447 .max
= G4X_P_DISPLAY_PORT_MAX
},
448 .p1
= { .min
= G4X_P1_DISPLAY_PORT_MIN
,
449 .max
= G4X_P1_DISPLAY_PORT_MAX
},
450 .p2
= { .dot_limit
= G4X_P2_DISPLAY_PORT_LIMIT
,
451 .p2_slow
= G4X_P2_DISPLAY_PORT_SLOW
,
452 .p2_fast
= G4X_P2_DISPLAY_PORT_FAST
},
453 .find_pll
= intel_find_pll_g4x_dp
,
456 static const intel_limit_t intel_limits_igd_sdvo
= {
457 .dot
= { .min
= I9XX_DOT_MIN
, .max
= I9XX_DOT_MAX
},
458 .vco
= { .min
= IGD_VCO_MIN
, .max
= IGD_VCO_MAX
},
459 .n
= { .min
= IGD_N_MIN
, .max
= IGD_N_MAX
},
460 .m
= { .min
= IGD_M_MIN
, .max
= IGD_M_MAX
},
461 .m1
= { .min
= IGD_M1_MIN
, .max
= IGD_M1_MAX
},
462 .m2
= { .min
= IGD_M2_MIN
, .max
= IGD_M2_MAX
},
463 .p
= { .min
= I9XX_P_SDVO_DAC_MIN
, .max
= I9XX_P_SDVO_DAC_MAX
},
464 .p1
= { .min
= I9XX_P1_MIN
, .max
= I9XX_P1_MAX
},
465 .p2
= { .dot_limit
= I9XX_P2_SDVO_DAC_SLOW_LIMIT
,
466 .p2_slow
= I9XX_P2_SDVO_DAC_SLOW
, .p2_fast
= I9XX_P2_SDVO_DAC_FAST
},
467 .find_pll
= intel_find_best_PLL
,
468 .find_reduced_pll
= intel_find_best_reduced_PLL
,
471 static const intel_limit_t intel_limits_igd_lvds
= {
472 .dot
= { .min
= I9XX_DOT_MIN
, .max
= I9XX_DOT_MAX
},
473 .vco
= { .min
= IGD_VCO_MIN
, .max
= IGD_VCO_MAX
},
474 .n
= { .min
= IGD_N_MIN
, .max
= IGD_N_MAX
},
475 .m
= { .min
= IGD_M_MIN
, .max
= IGD_M_MAX
},
476 .m1
= { .min
= IGD_M1_MIN
, .max
= IGD_M1_MAX
},
477 .m2
= { .min
= IGD_M2_MIN
, .max
= IGD_M2_MAX
},
478 .p
= { .min
= IGD_P_LVDS_MIN
, .max
= IGD_P_LVDS_MAX
},
479 .p1
= { .min
= I9XX_P1_MIN
, .max
= I9XX_P1_MAX
},
480 /* IGD only supports single-channel mode. */
481 .p2
= { .dot_limit
= I9XX_P2_LVDS_SLOW_LIMIT
,
482 .p2_slow
= I9XX_P2_LVDS_SLOW
, .p2_fast
= I9XX_P2_LVDS_SLOW
},
483 .find_pll
= intel_find_best_PLL
,
484 .find_reduced_pll
= intel_find_best_reduced_PLL
,
487 static const intel_limit_t intel_limits_igdng_sdvo
= {
488 .dot
= { .min
= IGDNG_DOT_MIN
, .max
= IGDNG_DOT_MAX
},
489 .vco
= { .min
= IGDNG_VCO_MIN
, .max
= IGDNG_VCO_MAX
},
490 .n
= { .min
= IGDNG_N_MIN
, .max
= IGDNG_N_MAX
},
491 .m
= { .min
= IGDNG_M_MIN
, .max
= IGDNG_M_MAX
},
492 .m1
= { .min
= IGDNG_M1_MIN
, .max
= IGDNG_M1_MAX
},
493 .m2
= { .min
= IGDNG_M2_MIN
, .max
= IGDNG_M2_MAX
},
494 .p
= { .min
= IGDNG_P_SDVO_DAC_MIN
, .max
= IGDNG_P_SDVO_DAC_MAX
},
495 .p1
= { .min
= IGDNG_P1_MIN
, .max
= IGDNG_P1_MAX
},
496 .p2
= { .dot_limit
= IGDNG_P2_DOT_LIMIT
,
497 .p2_slow
= IGDNG_P2_SDVO_DAC_SLOW
,
498 .p2_fast
= IGDNG_P2_SDVO_DAC_FAST
},
499 .find_pll
= intel_igdng_find_best_PLL
,
502 static const intel_limit_t intel_limits_igdng_lvds
= {
503 .dot
= { .min
= IGDNG_DOT_MIN
, .max
= IGDNG_DOT_MAX
},
504 .vco
= { .min
= IGDNG_VCO_MIN
, .max
= IGDNG_VCO_MAX
},
505 .n
= { .min
= IGDNG_N_MIN
, .max
= IGDNG_N_MAX
},
506 .m
= { .min
= IGDNG_M_MIN
, .max
= IGDNG_M_MAX
},
507 .m1
= { .min
= IGDNG_M1_MIN
, .max
= IGDNG_M1_MAX
},
508 .m2
= { .min
= IGDNG_M2_MIN
, .max
= IGDNG_M2_MAX
},
509 .p
= { .min
= IGDNG_P_LVDS_MIN
, .max
= IGDNG_P_LVDS_MAX
},
510 .p1
= { .min
= IGDNG_P1_MIN
, .max
= IGDNG_P1_MAX
},
511 .p2
= { .dot_limit
= IGDNG_P2_DOT_LIMIT
,
512 .p2_slow
= IGDNG_P2_LVDS_SLOW
,
513 .p2_fast
= IGDNG_P2_LVDS_FAST
},
514 .find_pll
= intel_igdng_find_best_PLL
,
517 static const intel_limit_t
*intel_igdng_limit(struct drm_crtc
*crtc
)
519 const intel_limit_t
*limit
;
520 if (intel_pipe_has_type(crtc
, INTEL_OUTPUT_LVDS
))
521 limit
= &intel_limits_igdng_lvds
;
523 limit
= &intel_limits_igdng_sdvo
;
528 static const intel_limit_t
*intel_g4x_limit(struct drm_crtc
*crtc
)
530 struct drm_device
*dev
= crtc
->dev
;
531 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
532 const intel_limit_t
*limit
;
534 if (intel_pipe_has_type(crtc
, INTEL_OUTPUT_LVDS
)) {
535 if ((I915_READ(LVDS
) & LVDS_CLKB_POWER_MASK
) ==
537 /* LVDS with dual channel */
538 limit
= &intel_limits_g4x_dual_channel_lvds
;
540 /* LVDS with dual channel */
541 limit
= &intel_limits_g4x_single_channel_lvds
;
542 } else if (intel_pipe_has_type(crtc
, INTEL_OUTPUT_HDMI
) ||
543 intel_pipe_has_type(crtc
, INTEL_OUTPUT_ANALOG
)) {
544 limit
= &intel_limits_g4x_hdmi
;
545 } else if (intel_pipe_has_type(crtc
, INTEL_OUTPUT_SDVO
)) {
546 limit
= &intel_limits_g4x_sdvo
;
547 } else if (intel_pipe_has_type (crtc
, INTEL_OUTPUT_DISPLAYPORT
)) {
548 limit
= &intel_limits_g4x_display_port
;
549 } else /* The option is for other outputs */
550 limit
= &intel_limits_i9xx_sdvo
;
555 static const intel_limit_t
*intel_limit(struct drm_crtc
*crtc
)
557 struct drm_device
*dev
= crtc
->dev
;
558 const intel_limit_t
*limit
;
561 limit
= intel_igdng_limit(crtc
);
562 else if (IS_G4X(dev
)) {
563 limit
= intel_g4x_limit(crtc
);
564 } else if (IS_I9XX(dev
) && !IS_IGD(dev
)) {
565 if (intel_pipe_has_type(crtc
, INTEL_OUTPUT_LVDS
))
566 limit
= &intel_limits_i9xx_lvds
;
568 limit
= &intel_limits_i9xx_sdvo
;
569 } else if (IS_IGD(dev
)) {
570 if (intel_pipe_has_type(crtc
, INTEL_OUTPUT_LVDS
))
571 limit
= &intel_limits_igd_lvds
;
573 limit
= &intel_limits_igd_sdvo
;
575 if (intel_pipe_has_type(crtc
, INTEL_OUTPUT_LVDS
))
576 limit
= &intel_limits_i8xx_lvds
;
578 limit
= &intel_limits_i8xx_dvo
;
583 /* m1 is reserved as 0 in IGD, n is a ring counter */
584 static void igd_clock(int refclk
, intel_clock_t
*clock
)
586 clock
->m
= clock
->m2
+ 2;
587 clock
->p
= clock
->p1
* clock
->p2
;
588 clock
->vco
= refclk
* clock
->m
/ clock
->n
;
589 clock
->dot
= clock
->vco
/ clock
->p
;
592 static void intel_clock(struct drm_device
*dev
, int refclk
, intel_clock_t
*clock
)
595 igd_clock(refclk
, clock
);
598 clock
->m
= 5 * (clock
->m1
+ 2) + (clock
->m2
+ 2);
599 clock
->p
= clock
->p1
* clock
->p2
;
600 clock
->vco
= refclk
* clock
->m
/ (clock
->n
+ 2);
601 clock
->dot
= clock
->vco
/ clock
->p
;
605 * Returns whether any output on the specified pipe is of the specified type
607 bool intel_pipe_has_type (struct drm_crtc
*crtc
, int type
)
609 struct drm_device
*dev
= crtc
->dev
;
610 struct drm_mode_config
*mode_config
= &dev
->mode_config
;
611 struct drm_connector
*l_entry
;
613 list_for_each_entry(l_entry
, &mode_config
->connector_list
, head
) {
614 if (l_entry
->encoder
&&
615 l_entry
->encoder
->crtc
== crtc
) {
616 struct intel_output
*intel_output
= to_intel_output(l_entry
);
617 if (intel_output
->type
== type
)
624 struct drm_connector
*
625 intel_pipe_get_output (struct drm_crtc
*crtc
)
627 struct drm_device
*dev
= crtc
->dev
;
628 struct drm_mode_config
*mode_config
= &dev
->mode_config
;
629 struct drm_connector
*l_entry
, *ret
= NULL
;
631 list_for_each_entry(l_entry
, &mode_config
->connector_list
, head
) {
632 if (l_entry
->encoder
&&
633 l_entry
->encoder
->crtc
== crtc
) {
641 #define INTELPllInvalid(s) do { /* DRM_DEBUG(s); */ return false; } while (0)
643 * Returns whether the given set of divisors are valid for a given refclk with
644 * the given connectors.
647 static bool intel_PLL_is_valid(struct drm_crtc
*crtc
, intel_clock_t
*clock
)
649 const intel_limit_t
*limit
= intel_limit (crtc
);
650 struct drm_device
*dev
= crtc
->dev
;
652 if (clock
->p1
< limit
->p1
.min
|| limit
->p1
.max
< clock
->p1
)
653 INTELPllInvalid ("p1 out of range\n");
654 if (clock
->p
< limit
->p
.min
|| limit
->p
.max
< clock
->p
)
655 INTELPllInvalid ("p out of range\n");
656 if (clock
->m2
< limit
->m2
.min
|| limit
->m2
.max
< clock
->m2
)
657 INTELPllInvalid ("m2 out of range\n");
658 if (clock
->m1
< limit
->m1
.min
|| limit
->m1
.max
< clock
->m1
)
659 INTELPllInvalid ("m1 out of range\n");
660 if (clock
->m1
<= clock
->m2
&& !IS_IGD(dev
))
661 INTELPllInvalid ("m1 <= m2\n");
662 if (clock
->m
< limit
->m
.min
|| limit
->m
.max
< clock
->m
)
663 INTELPllInvalid ("m out of range\n");
664 if (clock
->n
< limit
->n
.min
|| limit
->n
.max
< clock
->n
)
665 INTELPllInvalid ("n out of range\n");
666 if (clock
->vco
< limit
->vco
.min
|| limit
->vco
.max
< clock
->vco
)
667 INTELPllInvalid ("vco out of range\n");
668 /* XXX: We may need to be checking "Dot clock" depending on the multiplier,
669 * connector, etc., rather than just a single range.
671 if (clock
->dot
< limit
->dot
.min
|| limit
->dot
.max
< clock
->dot
)
672 INTELPllInvalid ("dot out of range\n");
678 intel_find_best_PLL(const intel_limit_t
*limit
, struct drm_crtc
*crtc
,
679 int target
, int refclk
, intel_clock_t
*best_clock
)
682 struct drm_device
*dev
= crtc
->dev
;
683 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
687 if (intel_pipe_has_type(crtc
, INTEL_OUTPUT_LVDS
) &&
688 (I915_READ(LVDS
)) != 0) {
690 * For LVDS, if the panel is on, just rely on its current
691 * settings for dual-channel. We haven't figured out how to
692 * reliably set up different single/dual channel state, if we
695 if ((I915_READ(LVDS
) & LVDS_CLKB_POWER_MASK
) ==
697 clock
.p2
= limit
->p2
.p2_fast
;
699 clock
.p2
= limit
->p2
.p2_slow
;
701 if (target
< limit
->p2
.dot_limit
)
702 clock
.p2
= limit
->p2
.p2_slow
;
704 clock
.p2
= limit
->p2
.p2_fast
;
707 memset (best_clock
, 0, sizeof (*best_clock
));
709 for (clock
.p1
= limit
->p1
.max
; clock
.p1
>= limit
->p1
.min
; clock
.p1
--) {
710 for (clock
.m1
= limit
->m1
.min
; clock
.m1
<= limit
->m1
.max
;
712 for (clock
.m2
= limit
->m2
.min
;
713 clock
.m2
<= limit
->m2
.max
; clock
.m2
++) {
714 /* m1 is always 0 in IGD */
715 if (clock
.m2
>= clock
.m1
&& !IS_IGD(dev
))
717 for (clock
.n
= limit
->n
.min
;
718 clock
.n
<= limit
->n
.max
; clock
.n
++) {
721 intel_clock(dev
, refclk
, &clock
);
723 if (!intel_PLL_is_valid(crtc
, &clock
))
726 this_err
= abs(clock
.dot
- target
);
727 if (this_err
< err
) {
736 return (err
!= target
);
741 intel_find_best_reduced_PLL(const intel_limit_t
*limit
, struct drm_crtc
*crtc
,
742 int target
, int refclk
, intel_clock_t
*best_clock
)
745 struct drm_device
*dev
= crtc
->dev
;
750 memcpy(&clock
, best_clock
, sizeof(intel_clock_t
));
752 for (clock
.m1
= limit
->m1
.min
; clock
.m1
<= limit
->m1
.max
; clock
.m1
++) {
753 for (clock
.m2
= limit
->m2
.min
; clock
.m2
<= limit
->m2
.max
; clock
.m2
++) {
754 /* m1 is always 0 in IGD */
755 if (clock
.m2
>= clock
.m1
&& !IS_IGD(dev
))
757 for (clock
.n
= limit
->n
.min
; clock
.n
<= limit
->n
.max
;
761 intel_clock(dev
, refclk
, &clock
);
763 if (!intel_PLL_is_valid(crtc
, &clock
))
766 this_err
= abs(clock
.dot
- target
);
767 if (this_err
< err
) {
780 intel_g4x_find_best_PLL(const intel_limit_t
*limit
, struct drm_crtc
*crtc
,
781 int target
, int refclk
, intel_clock_t
*best_clock
)
783 struct drm_device
*dev
= crtc
->dev
;
784 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
788 /* approximately equals target * 0.00488 */
789 int err_most
= (target
>> 8) + (target
>> 10);
792 if (intel_pipe_has_type(crtc
, INTEL_OUTPUT_LVDS
)) {
793 if ((I915_READ(LVDS
) & LVDS_CLKB_POWER_MASK
) ==
795 clock
.p2
= limit
->p2
.p2_fast
;
797 clock
.p2
= limit
->p2
.p2_slow
;
799 if (target
< limit
->p2
.dot_limit
)
800 clock
.p2
= limit
->p2
.p2_slow
;
802 clock
.p2
= limit
->p2
.p2_fast
;
805 memset(best_clock
, 0, sizeof(*best_clock
));
806 max_n
= limit
->n
.max
;
807 /* based on hardware requriment prefer smaller n to precision */
808 for (clock
.n
= limit
->n
.min
; clock
.n
<= max_n
; clock
.n
++) {
809 /* based on hardware requirment prefere larger m1,m2 */
810 for (clock
.m1
= limit
->m1
.max
;
811 clock
.m1
>= limit
->m1
.min
; clock
.m1
--) {
812 for (clock
.m2
= limit
->m2
.max
;
813 clock
.m2
>= limit
->m2
.min
; clock
.m2
--) {
814 for (clock
.p1
= limit
->p1
.max
;
815 clock
.p1
>= limit
->p1
.min
; clock
.p1
--) {
818 intel_clock(dev
, refclk
, &clock
);
819 if (!intel_PLL_is_valid(crtc
, &clock
))
821 this_err
= abs(clock
.dot
- target
) ;
822 if (this_err
< err_most
) {
836 intel_find_pll_igdng_dp(const intel_limit_t
*limit
, struct drm_crtc
*crtc
,
837 int target
, int refclk
, intel_clock_t
*best_clock
)
839 struct drm_device
*dev
= crtc
->dev
;
841 if (target
< 200000) {
854 intel_clock(dev
, refclk
, &clock
);
855 memcpy(best_clock
, &clock
, sizeof(intel_clock_t
));
860 intel_igdng_find_best_PLL(const intel_limit_t
*limit
, struct drm_crtc
*crtc
,
861 int target
, int refclk
, intel_clock_t
*best_clock
)
863 struct drm_device
*dev
= crtc
->dev
;
864 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
871 /* eDP has only 2 clock choice, no n/m/p setting */
875 if (intel_pipe_has_type(crtc
, INTEL_OUTPUT_DISPLAYPORT
))
876 return intel_find_pll_igdng_dp(limit
, crtc
, target
,
879 if (intel_pipe_has_type(crtc
, INTEL_OUTPUT_LVDS
)) {
880 if ((I915_READ(PCH_LVDS
) & LVDS_CLKB_POWER_MASK
) ==
882 clock
.p2
= limit
->p2
.p2_fast
;
884 clock
.p2
= limit
->p2
.p2_slow
;
886 if (target
< limit
->p2
.dot_limit
)
887 clock
.p2
= limit
->p2
.p2_slow
;
889 clock
.p2
= limit
->p2
.p2_fast
;
892 memset(best_clock
, 0, sizeof(*best_clock
));
893 max_n
= limit
->n
.max
;
894 for (clock
.p1
= limit
->p1
.max
; clock
.p1
>= limit
->p1
.min
; clock
.p1
--) {
895 /* based on hardware requriment prefer smaller n to precision */
896 for (clock
.n
= limit
->n
.min
; clock
.n
<= max_n
; clock
.n
++) {
897 /* based on hardware requirment prefere larger m1,m2 */
898 for (clock
.m1
= limit
->m1
.max
;
899 clock
.m1
>= limit
->m1
.min
; clock
.m1
--) {
900 for (clock
.m2
= limit
->m2
.max
;
901 clock
.m2
>= limit
->m2
.min
; clock
.m2
--) {
904 intel_clock(dev
, refclk
, &clock
);
905 if (!intel_PLL_is_valid(crtc
, &clock
))
907 this_err
= abs((10000 - (target
*10000/clock
.dot
)));
908 if (this_err
< err_most
) {
913 /* found on first matching */
924 /* DisplayPort has only two frequencies, 162MHz and 270MHz */
926 intel_find_pll_g4x_dp(const intel_limit_t
*limit
, struct drm_crtc
*crtc
,
927 int target
, int refclk
, intel_clock_t
*best_clock
)
930 if (target
< 200000) {
943 clock
.m
= 5 * (clock
.m1
+ 2) + (clock
.m2
+ 2);
944 clock
.p
= (clock
.p1
* clock
.p2
);
945 clock
.dot
= 96000 * clock
.m
/ (clock
.n
+ 2) / clock
.p
;
946 memcpy(best_clock
, &clock
, sizeof(intel_clock_t
));
951 intel_wait_for_vblank(struct drm_device
*dev
)
953 /* Wait for 20ms, i.e. one cycle at 50hz. */
957 /* Parameters have changed, update FBC info */
958 static void i8xx_enable_fbc(struct drm_crtc
*crtc
, unsigned long interval
)
960 struct drm_device
*dev
= crtc
->dev
;
961 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
962 struct drm_framebuffer
*fb
= crtc
->fb
;
963 struct intel_framebuffer
*intel_fb
= to_intel_framebuffer(fb
);
964 struct drm_i915_gem_object
*obj_priv
= intel_fb
->obj
->driver_private
;
965 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
967 u32 fbc_ctl
, fbc_ctl2
;
969 dev_priv
->cfb_pitch
= dev_priv
->cfb_size
/ FBC_LL_SIZE
;
971 if (fb
->pitch
< dev_priv
->cfb_pitch
)
972 dev_priv
->cfb_pitch
= fb
->pitch
;
974 /* FBC_CTL wants 64B units */
975 dev_priv
->cfb_pitch
= (dev_priv
->cfb_pitch
/ 64) - 1;
976 dev_priv
->cfb_fence
= obj_priv
->fence_reg
;
977 dev_priv
->cfb_plane
= intel_crtc
->plane
;
978 plane
= dev_priv
->cfb_plane
== 0 ? FBC_CTL_PLANEA
: FBC_CTL_PLANEB
;
981 for (i
= 0; i
< (FBC_LL_SIZE
/ 32) + 1; i
++)
982 I915_WRITE(FBC_TAG
+ (i
* 4), 0);
985 fbc_ctl2
= FBC_CTL_FENCE_DBL
| FBC_CTL_IDLE_IMM
| plane
;
986 if (obj_priv
->tiling_mode
!= I915_TILING_NONE
)
987 fbc_ctl2
|= FBC_CTL_CPU_FENCE
;
988 I915_WRITE(FBC_CONTROL2
, fbc_ctl2
);
989 I915_WRITE(FBC_FENCE_OFF
, crtc
->y
);
992 fbc_ctl
= FBC_CTL_EN
| FBC_CTL_PERIODIC
;
993 fbc_ctl
|= (dev_priv
->cfb_pitch
& 0xff) << FBC_CTL_STRIDE_SHIFT
;
994 fbc_ctl
|= (interval
& 0x2fff) << FBC_CTL_INTERVAL_SHIFT
;
995 if (obj_priv
->tiling_mode
!= I915_TILING_NONE
)
996 fbc_ctl
|= dev_priv
->cfb_fence
;
997 I915_WRITE(FBC_CONTROL
, fbc_ctl
);
999 DRM_DEBUG("enabled FBC, pitch %ld, yoff %d, plane %d, ",
1000 dev_priv
->cfb_pitch
, crtc
->y
, dev_priv
->cfb_plane
);
1003 void i8xx_disable_fbc(struct drm_device
*dev
)
1005 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1008 if (!I915_HAS_FBC(dev
))
1011 /* Disable compression */
1012 fbc_ctl
= I915_READ(FBC_CONTROL
);
1013 fbc_ctl
&= ~FBC_CTL_EN
;
1014 I915_WRITE(FBC_CONTROL
, fbc_ctl
);
1016 /* Wait for compressing bit to clear */
1017 while (I915_READ(FBC_STATUS
) & FBC_STAT_COMPRESSING
)
1020 intel_wait_for_vblank(dev
);
1022 DRM_DEBUG("disabled FBC\n");
1025 static bool i8xx_fbc_enabled(struct drm_crtc
*crtc
)
1027 struct drm_device
*dev
= crtc
->dev
;
1028 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1030 return I915_READ(FBC_CONTROL
) & FBC_CTL_EN
;
1033 static void g4x_enable_fbc(struct drm_crtc
*crtc
, unsigned long interval
)
1035 struct drm_device
*dev
= crtc
->dev
;
1036 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1037 struct drm_framebuffer
*fb
= crtc
->fb
;
1038 struct intel_framebuffer
*intel_fb
= to_intel_framebuffer(fb
);
1039 struct drm_i915_gem_object
*obj_priv
= intel_fb
->obj
->driver_private
;
1040 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
1041 int plane
= (intel_crtc
->plane
== 0 ? DPFC_CTL_PLANEA
:
1043 unsigned long stall_watermark
= 200;
1046 dev_priv
->cfb_pitch
= (dev_priv
->cfb_pitch
/ 64) - 1;
1047 dev_priv
->cfb_fence
= obj_priv
->fence_reg
;
1048 dev_priv
->cfb_plane
= intel_crtc
->plane
;
1050 dpfc_ctl
= plane
| DPFC_SR_EN
| DPFC_CTL_LIMIT_1X
;
1051 if (obj_priv
->tiling_mode
!= I915_TILING_NONE
) {
1052 dpfc_ctl
|= DPFC_CTL_FENCE_EN
| dev_priv
->cfb_fence
;
1053 I915_WRITE(DPFC_CHICKEN
, DPFC_HT_MODIFY
);
1055 I915_WRITE(DPFC_CHICKEN
, ~DPFC_HT_MODIFY
);
1058 I915_WRITE(DPFC_CONTROL
, dpfc_ctl
);
1059 I915_WRITE(DPFC_RECOMP_CTL
, DPFC_RECOMP_STALL_EN
|
1060 (stall_watermark
<< DPFC_RECOMP_STALL_WM_SHIFT
) |
1061 (interval
<< DPFC_RECOMP_TIMER_COUNT_SHIFT
));
1062 I915_WRITE(DPFC_FENCE_YOFF
, crtc
->y
);
1065 I915_WRITE(DPFC_CONTROL
, I915_READ(DPFC_CONTROL
) | DPFC_CTL_EN
);
1067 DRM_DEBUG("enabled fbc on plane %d\n", intel_crtc
->plane
);
1070 void g4x_disable_fbc(struct drm_device
*dev
)
1072 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1075 /* Disable compression */
1076 dpfc_ctl
= I915_READ(DPFC_CONTROL
);
1077 dpfc_ctl
&= ~DPFC_CTL_EN
;
1078 I915_WRITE(DPFC_CONTROL
, dpfc_ctl
);
1079 intel_wait_for_vblank(dev
);
1081 DRM_DEBUG("disabled FBC\n");
1084 static bool g4x_fbc_enabled(struct drm_crtc
*crtc
)
1086 struct drm_device
*dev
= crtc
->dev
;
1087 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1089 return I915_READ(DPFC_CONTROL
) & DPFC_CTL_EN
;
1093 * intel_update_fbc - enable/disable FBC as needed
1094 * @crtc: CRTC to point the compressor at
1095 * @mode: mode in use
1097 * Set up the framebuffer compression hardware at mode set time. We
1098 * enable it if possible:
1099 * - plane A only (on pre-965)
1100 * - no pixel mulitply/line duplication
1101 * - no alpha buffer discard
1103 * - framebuffer <= 2048 in width, 1536 in height
1105 * We can't assume that any compression will take place (worst case),
1106 * so the compressed buffer has to be the same size as the uncompressed
1107 * one. It also must reside (along with the line length buffer) in
1110 * We need to enable/disable FBC on a global basis.
1112 static void intel_update_fbc(struct drm_crtc
*crtc
,
1113 struct drm_display_mode
*mode
)
1115 struct drm_device
*dev
= crtc
->dev
;
1116 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1117 struct drm_framebuffer
*fb
= crtc
->fb
;
1118 struct intel_framebuffer
*intel_fb
;
1119 struct drm_i915_gem_object
*obj_priv
;
1120 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
1121 int plane
= intel_crtc
->plane
;
1123 if (!i915_powersave
)
1126 if (!dev_priv
->display
.fbc_enabled
||
1127 !dev_priv
->display
.enable_fbc
||
1128 !dev_priv
->display
.disable_fbc
)
1134 intel_fb
= to_intel_framebuffer(fb
);
1135 obj_priv
= intel_fb
->obj
->driver_private
;
1138 * If FBC is already on, we just have to verify that we can
1139 * keep it that way...
1140 * Need to disable if:
1141 * - changing FBC params (stride, fence, mode)
1142 * - new fb is too large to fit in compressed buffer
1143 * - going to an unsupported config (interlace, pixel multiply, etc.)
1145 if (intel_fb
->obj
->size
> dev_priv
->cfb_size
) {
1146 DRM_DEBUG("framebuffer too large, disabling compression\n");
1149 if ((mode
->flags
& DRM_MODE_FLAG_INTERLACE
) ||
1150 (mode
->flags
& DRM_MODE_FLAG_DBLSCAN
)) {
1151 DRM_DEBUG("mode incompatible with compression, disabling\n");
1154 if ((mode
->hdisplay
> 2048) ||
1155 (mode
->vdisplay
> 1536)) {
1156 DRM_DEBUG("mode too large for compression, disabling\n");
1159 if ((IS_I915GM(dev
) || IS_I945GM(dev
)) && plane
!= 0) {
1160 DRM_DEBUG("plane not 0, disabling compression\n");
1163 if (obj_priv
->tiling_mode
!= I915_TILING_X
) {
1164 DRM_DEBUG("framebuffer not tiled, disabling compression\n");
1168 if (dev_priv
->display
.fbc_enabled(crtc
)) {
1169 /* We can re-enable it in this case, but need to update pitch */
1170 if (fb
->pitch
> dev_priv
->cfb_pitch
)
1171 dev_priv
->display
.disable_fbc(dev
);
1172 if (obj_priv
->fence_reg
!= dev_priv
->cfb_fence
)
1173 dev_priv
->display
.disable_fbc(dev
);
1174 if (plane
!= dev_priv
->cfb_plane
)
1175 dev_priv
->display
.disable_fbc(dev
);
1178 if (!dev_priv
->display
.fbc_enabled(crtc
)) {
1179 /* Now try to turn it back on if possible */
1180 dev_priv
->display
.enable_fbc(crtc
, 500);
1186 DRM_DEBUG("unsupported config, disabling FBC\n");
1187 /* Multiple disables should be harmless */
1188 if (dev_priv
->display
.fbc_enabled(crtc
))
1189 dev_priv
->display
.disable_fbc(dev
);
1193 intel_pipe_set_base(struct drm_crtc
*crtc
, int x
, int y
,
1194 struct drm_framebuffer
*old_fb
)
1196 struct drm_device
*dev
= crtc
->dev
;
1197 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1198 struct drm_i915_master_private
*master_priv
;
1199 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
1200 struct intel_framebuffer
*intel_fb
;
1201 struct drm_i915_gem_object
*obj_priv
;
1202 struct drm_gem_object
*obj
;
1203 int pipe
= intel_crtc
->pipe
;
1204 int plane
= intel_crtc
->plane
;
1205 unsigned long Start
, Offset
;
1206 int dspbase
= (plane
== 0 ? DSPAADDR
: DSPBADDR
);
1207 int dspsurf
= (plane
== 0 ? DSPASURF
: DSPBSURF
);
1208 int dspstride
= (plane
== 0) ? DSPASTRIDE
: DSPBSTRIDE
;
1209 int dsptileoff
= (plane
== 0 ? DSPATILEOFF
: DSPBTILEOFF
);
1210 int dspcntr_reg
= (plane
== 0) ? DSPACNTR
: DSPBCNTR
;
1211 u32 dspcntr
, alignment
;
1216 DRM_DEBUG("No FB bound\n");
1225 DRM_ERROR("Can't update plane %d in SAREA\n", plane
);
1229 intel_fb
= to_intel_framebuffer(crtc
->fb
);
1230 obj
= intel_fb
->obj
;
1231 obj_priv
= obj
->driver_private
;
1233 switch (obj_priv
->tiling_mode
) {
1234 case I915_TILING_NONE
:
1235 alignment
= 64 * 1024;
1238 /* pin() will align the object as required by fence */
1242 /* FIXME: Is this true? */
1243 DRM_ERROR("Y tiled not allowed for scan out buffers\n");
1249 mutex_lock(&dev
->struct_mutex
);
1250 ret
= i915_gem_object_pin(obj
, alignment
);
1252 mutex_unlock(&dev
->struct_mutex
);
1256 ret
= i915_gem_object_set_to_gtt_domain(obj
, 1);
1258 i915_gem_object_unpin(obj
);
1259 mutex_unlock(&dev
->struct_mutex
);
1263 /* Install a fence for tiled scan-out. Pre-i965 always needs a fence,
1264 * whereas 965+ only requires a fence if using framebuffer compression.
1265 * For simplicity, we always install a fence as the cost is not that onerous.
1267 if (obj_priv
->fence_reg
== I915_FENCE_REG_NONE
&&
1268 obj_priv
->tiling_mode
!= I915_TILING_NONE
) {
1269 ret
= i915_gem_object_get_fence_reg(obj
);
1271 i915_gem_object_unpin(obj
);
1272 mutex_unlock(&dev
->struct_mutex
);
1277 dspcntr
= I915_READ(dspcntr_reg
);
1278 /* Mask out pixel format bits in case we change it */
1279 dspcntr
&= ~DISPPLANE_PIXFORMAT_MASK
;
1280 switch (crtc
->fb
->bits_per_pixel
) {
1282 dspcntr
|= DISPPLANE_8BPP
;
1285 if (crtc
->fb
->depth
== 15)
1286 dspcntr
|= DISPPLANE_15_16BPP
;
1288 dspcntr
|= DISPPLANE_16BPP
;
1292 dspcntr
|= DISPPLANE_32BPP_NO_ALPHA
;
1295 DRM_ERROR("Unknown color depth\n");
1296 i915_gem_object_unpin(obj
);
1297 mutex_unlock(&dev
->struct_mutex
);
1300 if (IS_I965G(dev
)) {
1301 if (obj_priv
->tiling_mode
!= I915_TILING_NONE
)
1302 dspcntr
|= DISPPLANE_TILED
;
1304 dspcntr
&= ~DISPPLANE_TILED
;
1309 dspcntr
|= DISPPLANE_TRICKLE_FEED_DISABLE
;
1311 I915_WRITE(dspcntr_reg
, dspcntr
);
1313 Start
= obj_priv
->gtt_offset
;
1314 Offset
= y
* crtc
->fb
->pitch
+ x
* (crtc
->fb
->bits_per_pixel
/ 8);
1316 DRM_DEBUG("Writing base %08lX %08lX %d %d\n", Start
, Offset
, x
, y
);
1317 I915_WRITE(dspstride
, crtc
->fb
->pitch
);
1318 if (IS_I965G(dev
)) {
1319 I915_WRITE(dspbase
, Offset
);
1321 I915_WRITE(dspsurf
, Start
);
1323 I915_WRITE(dsptileoff
, (y
<< 16) | x
);
1325 I915_WRITE(dspbase
, Start
+ Offset
);
1329 if ((IS_I965G(dev
) || plane
== 0))
1330 intel_update_fbc(crtc
, &crtc
->mode
);
1332 intel_wait_for_vblank(dev
);
1335 intel_fb
= to_intel_framebuffer(old_fb
);
1336 obj_priv
= intel_fb
->obj
->driver_private
;
1337 i915_gem_object_unpin(intel_fb
->obj
);
1339 intel_increase_pllclock(crtc
, true);
1341 mutex_unlock(&dev
->struct_mutex
);
1343 if (!dev
->primary
->master
)
1346 master_priv
= dev
->primary
->master
->driver_priv
;
1347 if (!master_priv
->sarea_priv
)
1351 master_priv
->sarea_priv
->pipeB_x
= x
;
1352 master_priv
->sarea_priv
->pipeB_y
= y
;
1354 master_priv
->sarea_priv
->pipeA_x
= x
;
1355 master_priv
->sarea_priv
->pipeA_y
= y
;
1361 /* Disable the VGA plane that we never use */
1362 static void i915_disable_vga (struct drm_device
*dev
)
1364 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1369 vga_reg
= CPU_VGACNTRL
;
1373 if (I915_READ(vga_reg
) & VGA_DISP_DISABLE
)
1376 I915_WRITE8(VGA_SR_INDEX
, 1);
1377 sr1
= I915_READ8(VGA_SR_DATA
);
1378 I915_WRITE8(VGA_SR_DATA
, sr1
| (1 << 5));
1381 I915_WRITE(vga_reg
, VGA_DISP_DISABLE
);
1384 static void igdng_disable_pll_edp (struct drm_crtc
*crtc
)
1386 struct drm_device
*dev
= crtc
->dev
;
1387 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1391 dpa_ctl
= I915_READ(DP_A
);
1392 dpa_ctl
&= ~DP_PLL_ENABLE
;
1393 I915_WRITE(DP_A
, dpa_ctl
);
1396 static void igdng_enable_pll_edp (struct drm_crtc
*crtc
)
1398 struct drm_device
*dev
= crtc
->dev
;
1399 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1402 dpa_ctl
= I915_READ(DP_A
);
1403 dpa_ctl
|= DP_PLL_ENABLE
;
1404 I915_WRITE(DP_A
, dpa_ctl
);
1409 static void igdng_set_pll_edp (struct drm_crtc
*crtc
, int clock
)
1411 struct drm_device
*dev
= crtc
->dev
;
1412 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1415 DRM_DEBUG("eDP PLL enable for clock %d\n", clock
);
1416 dpa_ctl
= I915_READ(DP_A
);
1417 dpa_ctl
&= ~DP_PLL_FREQ_MASK
;
1419 if (clock
< 200000) {
1421 dpa_ctl
|= DP_PLL_FREQ_160MHZ
;
1422 /* workaround for 160Mhz:
1423 1) program 0x4600c bits 15:0 = 0x8124
1424 2) program 0x46010 bit 0 = 1
1425 3) program 0x46034 bit 24 = 1
1426 4) program 0x64000 bit 14 = 1
1428 temp
= I915_READ(0x4600c);
1430 I915_WRITE(0x4600c, temp
| 0x8124);
1432 temp
= I915_READ(0x46010);
1433 I915_WRITE(0x46010, temp
| 1);
1435 temp
= I915_READ(0x46034);
1436 I915_WRITE(0x46034, temp
| (1 << 24));
1438 dpa_ctl
|= DP_PLL_FREQ_270MHZ
;
1440 I915_WRITE(DP_A
, dpa_ctl
);
1445 static void igdng_crtc_dpms(struct drm_crtc
*crtc
, int mode
)
1447 struct drm_device
*dev
= crtc
->dev
;
1448 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1449 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
1450 int pipe
= intel_crtc
->pipe
;
1451 int plane
= intel_crtc
->plane
;
1452 int pch_dpll_reg
= (pipe
== 0) ? PCH_DPLL_A
: PCH_DPLL_B
;
1453 int pipeconf_reg
= (pipe
== 0) ? PIPEACONF
: PIPEBCONF
;
1454 int dspcntr_reg
= (plane
== 0) ? DSPACNTR
: DSPBCNTR
;
1455 int dspbase_reg
= (plane
== 0) ? DSPAADDR
: DSPBADDR
;
1456 int fdi_tx_reg
= (pipe
== 0) ? FDI_TXA_CTL
: FDI_TXB_CTL
;
1457 int fdi_rx_reg
= (pipe
== 0) ? FDI_RXA_CTL
: FDI_RXB_CTL
;
1458 int fdi_rx_iir_reg
= (pipe
== 0) ? FDI_RXA_IIR
: FDI_RXB_IIR
;
1459 int fdi_rx_imr_reg
= (pipe
== 0) ? FDI_RXA_IMR
: FDI_RXB_IMR
;
1460 int transconf_reg
= (pipe
== 0) ? TRANSACONF
: TRANSBCONF
;
1461 int pf_ctl_reg
= (pipe
== 0) ? PFA_CTL_1
: PFB_CTL_1
;
1462 int pf_win_size
= (pipe
== 0) ? PFA_WIN_SZ
: PFB_WIN_SZ
;
1463 int pf_win_pos
= (pipe
== 0) ? PFA_WIN_POS
: PFB_WIN_POS
;
1464 int cpu_htot_reg
= (pipe
== 0) ? HTOTAL_A
: HTOTAL_B
;
1465 int cpu_hblank_reg
= (pipe
== 0) ? HBLANK_A
: HBLANK_B
;
1466 int cpu_hsync_reg
= (pipe
== 0) ? HSYNC_A
: HSYNC_B
;
1467 int cpu_vtot_reg
= (pipe
== 0) ? VTOTAL_A
: VTOTAL_B
;
1468 int cpu_vblank_reg
= (pipe
== 0) ? VBLANK_A
: VBLANK_B
;
1469 int cpu_vsync_reg
= (pipe
== 0) ? VSYNC_A
: VSYNC_B
;
1470 int trans_htot_reg
= (pipe
== 0) ? TRANS_HTOTAL_A
: TRANS_HTOTAL_B
;
1471 int trans_hblank_reg
= (pipe
== 0) ? TRANS_HBLANK_A
: TRANS_HBLANK_B
;
1472 int trans_hsync_reg
= (pipe
== 0) ? TRANS_HSYNC_A
: TRANS_HSYNC_B
;
1473 int trans_vtot_reg
= (pipe
== 0) ? TRANS_VTOTAL_A
: TRANS_VTOTAL_B
;
1474 int trans_vblank_reg
= (pipe
== 0) ? TRANS_VBLANK_A
: TRANS_VBLANK_B
;
1475 int trans_vsync_reg
= (pipe
== 0) ? TRANS_VSYNC_A
: TRANS_VSYNC_B
;
1477 int tries
= 5, j
, n
;
1479 /* XXX: When our outputs are all unaware of DPMS modes other than off
1480 * and on, we should map those modes to DRM_MODE_DPMS_OFF in the CRTC.
1483 case DRM_MODE_DPMS_ON
:
1484 case DRM_MODE_DPMS_STANDBY
:
1485 case DRM_MODE_DPMS_SUSPEND
:
1486 DRM_DEBUG("crtc %d dpms on\n", pipe
);
1488 /* enable eDP PLL */
1489 igdng_enable_pll_edp(crtc
);
1491 /* enable PCH DPLL */
1492 temp
= I915_READ(pch_dpll_reg
);
1493 if ((temp
& DPLL_VCO_ENABLE
) == 0) {
1494 I915_WRITE(pch_dpll_reg
, temp
| DPLL_VCO_ENABLE
);
1495 I915_READ(pch_dpll_reg
);
1498 /* enable PCH FDI RX PLL, wait warmup plus DMI latency */
1499 temp
= I915_READ(fdi_rx_reg
);
1500 I915_WRITE(fdi_rx_reg
, temp
| FDI_RX_PLL_ENABLE
|
1502 FDI_DP_PORT_WIDTH_X4
); /* default 4 lanes */
1503 I915_READ(fdi_rx_reg
);
1506 /* Enable CPU FDI TX PLL, always on for IGDNG */
1507 temp
= I915_READ(fdi_tx_reg
);
1508 if ((temp
& FDI_TX_PLL_ENABLE
) == 0) {
1509 I915_WRITE(fdi_tx_reg
, temp
| FDI_TX_PLL_ENABLE
);
1510 I915_READ(fdi_tx_reg
);
1515 /* Enable panel fitting for LVDS */
1516 if (intel_pipe_has_type(crtc
, INTEL_OUTPUT_LVDS
)) {
1517 temp
= I915_READ(pf_ctl_reg
);
1518 I915_WRITE(pf_ctl_reg
, temp
| PF_ENABLE
| PF_FILTER_MED_3x3
);
1520 /* currently full aspect */
1521 I915_WRITE(pf_win_pos
, 0);
1523 I915_WRITE(pf_win_size
,
1524 (dev_priv
->panel_fixed_mode
->hdisplay
<< 16) |
1525 (dev_priv
->panel_fixed_mode
->vdisplay
));
1528 /* Enable CPU pipe */
1529 temp
= I915_READ(pipeconf_reg
);
1530 if ((temp
& PIPEACONF_ENABLE
) == 0) {
1531 I915_WRITE(pipeconf_reg
, temp
| PIPEACONF_ENABLE
);
1532 I915_READ(pipeconf_reg
);
1536 /* configure and enable CPU plane */
1537 temp
= I915_READ(dspcntr_reg
);
1538 if ((temp
& DISPLAY_PLANE_ENABLE
) == 0) {
1539 I915_WRITE(dspcntr_reg
, temp
| DISPLAY_PLANE_ENABLE
);
1540 /* Flush the plane changes */
1541 I915_WRITE(dspbase_reg
, I915_READ(dspbase_reg
));
1545 /* enable CPU FDI TX and PCH FDI RX */
1546 temp
= I915_READ(fdi_tx_reg
);
1547 temp
|= FDI_TX_ENABLE
;
1548 temp
|= FDI_DP_PORT_WIDTH_X4
; /* default */
1549 temp
&= ~FDI_LINK_TRAIN_NONE
;
1550 temp
|= FDI_LINK_TRAIN_PATTERN_1
;
1551 I915_WRITE(fdi_tx_reg
, temp
);
1552 I915_READ(fdi_tx_reg
);
1554 temp
= I915_READ(fdi_rx_reg
);
1555 temp
&= ~FDI_LINK_TRAIN_NONE
;
1556 temp
|= FDI_LINK_TRAIN_PATTERN_1
;
1557 I915_WRITE(fdi_rx_reg
, temp
| FDI_RX_ENABLE
);
1558 I915_READ(fdi_rx_reg
);
1563 /* umask FDI RX Interrupt symbol_lock and bit_lock bit
1565 temp
= I915_READ(fdi_rx_imr_reg
);
1566 temp
&= ~FDI_RX_SYMBOL_LOCK
;
1567 temp
&= ~FDI_RX_BIT_LOCK
;
1568 I915_WRITE(fdi_rx_imr_reg
, temp
);
1569 I915_READ(fdi_rx_imr_reg
);
1572 temp
= I915_READ(fdi_rx_iir_reg
);
1573 DRM_DEBUG("FDI_RX_IIR 0x%x\n", temp
);
1575 if ((temp
& FDI_RX_BIT_LOCK
) == 0) {
1576 for (j
= 0; j
< tries
; j
++) {
1577 temp
= I915_READ(fdi_rx_iir_reg
);
1578 DRM_DEBUG("FDI_RX_IIR 0x%x\n", temp
);
1579 if (temp
& FDI_RX_BIT_LOCK
)
1584 I915_WRITE(fdi_rx_iir_reg
,
1585 temp
| FDI_RX_BIT_LOCK
);
1587 DRM_DEBUG("train 1 fail\n");
1589 I915_WRITE(fdi_rx_iir_reg
,
1590 temp
| FDI_RX_BIT_LOCK
);
1591 DRM_DEBUG("train 1 ok 2!\n");
1593 temp
= I915_READ(fdi_tx_reg
);
1594 temp
&= ~FDI_LINK_TRAIN_NONE
;
1595 temp
|= FDI_LINK_TRAIN_PATTERN_2
;
1596 I915_WRITE(fdi_tx_reg
, temp
);
1598 temp
= I915_READ(fdi_rx_reg
);
1599 temp
&= ~FDI_LINK_TRAIN_NONE
;
1600 temp
|= FDI_LINK_TRAIN_PATTERN_2
;
1601 I915_WRITE(fdi_rx_reg
, temp
);
1605 temp
= I915_READ(fdi_rx_iir_reg
);
1606 DRM_DEBUG("FDI_RX_IIR 0x%x\n", temp
);
1608 if ((temp
& FDI_RX_SYMBOL_LOCK
) == 0) {
1609 for (j
= 0; j
< tries
; j
++) {
1610 temp
= I915_READ(fdi_rx_iir_reg
);
1611 DRM_DEBUG("FDI_RX_IIR 0x%x\n", temp
);
1612 if (temp
& FDI_RX_SYMBOL_LOCK
)
1617 I915_WRITE(fdi_rx_iir_reg
,
1618 temp
| FDI_RX_SYMBOL_LOCK
);
1619 DRM_DEBUG("train 2 ok 1!\n");
1621 DRM_DEBUG("train 2 fail\n");
1623 I915_WRITE(fdi_rx_iir_reg
,
1624 temp
| FDI_RX_SYMBOL_LOCK
);
1625 DRM_DEBUG("train 2 ok 2!\n");
1627 DRM_DEBUG("train done\n");
1629 /* set transcoder timing */
1630 I915_WRITE(trans_htot_reg
, I915_READ(cpu_htot_reg
));
1631 I915_WRITE(trans_hblank_reg
, I915_READ(cpu_hblank_reg
));
1632 I915_WRITE(trans_hsync_reg
, I915_READ(cpu_hsync_reg
));
1634 I915_WRITE(trans_vtot_reg
, I915_READ(cpu_vtot_reg
));
1635 I915_WRITE(trans_vblank_reg
, I915_READ(cpu_vblank_reg
));
1636 I915_WRITE(trans_vsync_reg
, I915_READ(cpu_vsync_reg
));
1638 /* enable PCH transcoder */
1639 temp
= I915_READ(transconf_reg
);
1640 I915_WRITE(transconf_reg
, temp
| TRANS_ENABLE
);
1641 I915_READ(transconf_reg
);
1643 while ((I915_READ(transconf_reg
) & TRANS_STATE_ENABLE
) == 0)
1648 temp
= I915_READ(fdi_tx_reg
);
1649 temp
&= ~FDI_LINK_TRAIN_NONE
;
1650 I915_WRITE(fdi_tx_reg
, temp
| FDI_LINK_TRAIN_NONE
|
1651 FDI_TX_ENHANCE_FRAME_ENABLE
);
1652 I915_READ(fdi_tx_reg
);
1654 temp
= I915_READ(fdi_rx_reg
);
1655 temp
&= ~FDI_LINK_TRAIN_NONE
;
1656 I915_WRITE(fdi_rx_reg
, temp
| FDI_LINK_TRAIN_NONE
|
1657 FDI_RX_ENHANCE_FRAME_ENABLE
);
1658 I915_READ(fdi_rx_reg
);
1660 /* wait one idle pattern time */
1665 intel_crtc_load_lut(crtc
);
1668 case DRM_MODE_DPMS_OFF
:
1669 DRM_DEBUG("crtc %d dpms off\n", pipe
);
1671 i915_disable_vga(dev
);
1673 /* Disable display plane */
1674 temp
= I915_READ(dspcntr_reg
);
1675 if ((temp
& DISPLAY_PLANE_ENABLE
) != 0) {
1676 I915_WRITE(dspcntr_reg
, temp
& ~DISPLAY_PLANE_ENABLE
);
1677 /* Flush the plane changes */
1678 I915_WRITE(dspbase_reg
, I915_READ(dspbase_reg
));
1679 I915_READ(dspbase_reg
);
1682 /* disable cpu pipe, disable after all planes disabled */
1683 temp
= I915_READ(pipeconf_reg
);
1684 if ((temp
& PIPEACONF_ENABLE
) != 0) {
1685 I915_WRITE(pipeconf_reg
, temp
& ~PIPEACONF_ENABLE
);
1686 I915_READ(pipeconf_reg
);
1688 /* wait for cpu pipe off, pipe state */
1689 while ((I915_READ(pipeconf_reg
) & I965_PIPECONF_ACTIVE
) != 0) {
1695 DRM_DEBUG("pipe %d off delay\n", pipe
);
1700 DRM_DEBUG("crtc %d is disabled\n", pipe
);
1703 igdng_disable_pll_edp(crtc
);
1706 /* disable CPU FDI tx and PCH FDI rx */
1707 temp
= I915_READ(fdi_tx_reg
);
1708 I915_WRITE(fdi_tx_reg
, temp
& ~FDI_TX_ENABLE
);
1709 I915_READ(fdi_tx_reg
);
1711 temp
= I915_READ(fdi_rx_reg
);
1712 I915_WRITE(fdi_rx_reg
, temp
& ~FDI_RX_ENABLE
);
1713 I915_READ(fdi_rx_reg
);
1717 /* still set train pattern 1 */
1718 temp
= I915_READ(fdi_tx_reg
);
1719 temp
&= ~FDI_LINK_TRAIN_NONE
;
1720 temp
|= FDI_LINK_TRAIN_PATTERN_1
;
1721 I915_WRITE(fdi_tx_reg
, temp
);
1723 temp
= I915_READ(fdi_rx_reg
);
1724 temp
&= ~FDI_LINK_TRAIN_NONE
;
1725 temp
|= FDI_LINK_TRAIN_PATTERN_1
;
1726 I915_WRITE(fdi_rx_reg
, temp
);
1730 /* disable PCH transcoder */
1731 temp
= I915_READ(transconf_reg
);
1732 if ((temp
& TRANS_ENABLE
) != 0) {
1733 I915_WRITE(transconf_reg
, temp
& ~TRANS_ENABLE
);
1734 I915_READ(transconf_reg
);
1736 /* wait for PCH transcoder off, transcoder state */
1737 while ((I915_READ(transconf_reg
) & TRANS_STATE_ENABLE
) != 0) {
1743 DRM_DEBUG("transcoder %d off delay\n", pipe
);
1749 /* disable PCH DPLL */
1750 temp
= I915_READ(pch_dpll_reg
);
1751 if ((temp
& DPLL_VCO_ENABLE
) != 0) {
1752 I915_WRITE(pch_dpll_reg
, temp
& ~DPLL_VCO_ENABLE
);
1753 I915_READ(pch_dpll_reg
);
1756 temp
= I915_READ(fdi_rx_reg
);
1757 if ((temp
& FDI_RX_PLL_ENABLE
) != 0) {
1758 temp
&= ~FDI_SEL_PCDCLK
;
1759 temp
&= ~FDI_RX_PLL_ENABLE
;
1760 I915_WRITE(fdi_rx_reg
, temp
);
1761 I915_READ(fdi_rx_reg
);
1764 /* Disable CPU FDI TX PLL */
1765 temp
= I915_READ(fdi_tx_reg
);
1766 if ((temp
& FDI_TX_PLL_ENABLE
) != 0) {
1767 I915_WRITE(fdi_tx_reg
, temp
& ~FDI_TX_PLL_ENABLE
);
1768 I915_READ(fdi_tx_reg
);
1773 temp
= I915_READ(pf_ctl_reg
);
1774 if ((temp
& PF_ENABLE
) != 0) {
1775 I915_WRITE(pf_ctl_reg
, temp
& ~PF_ENABLE
);
1776 I915_READ(pf_ctl_reg
);
1778 I915_WRITE(pf_win_size
, 0);
1780 /* Wait for the clocks to turn off. */
1786 static void i9xx_crtc_dpms(struct drm_crtc
*crtc
, int mode
)
1788 struct drm_device
*dev
= crtc
->dev
;
1789 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1790 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
1791 int pipe
= intel_crtc
->pipe
;
1792 int plane
= intel_crtc
->plane
;
1793 int dpll_reg
= (pipe
== 0) ? DPLL_A
: DPLL_B
;
1794 int dspcntr_reg
= (plane
== 0) ? DSPACNTR
: DSPBCNTR
;
1795 int dspbase_reg
= (plane
== 0) ? DSPAADDR
: DSPBADDR
;
1796 int pipeconf_reg
= (pipe
== 0) ? PIPEACONF
: PIPEBCONF
;
1799 /* XXX: When our outputs are all unaware of DPMS modes other than off
1800 * and on, we should map those modes to DRM_MODE_DPMS_OFF in the CRTC.
1803 case DRM_MODE_DPMS_ON
:
1804 case DRM_MODE_DPMS_STANDBY
:
1805 case DRM_MODE_DPMS_SUSPEND
:
1806 /* Enable the DPLL */
1807 temp
= I915_READ(dpll_reg
);
1808 if ((temp
& DPLL_VCO_ENABLE
) == 0) {
1809 I915_WRITE(dpll_reg
, temp
);
1810 I915_READ(dpll_reg
);
1811 /* Wait for the clocks to stabilize. */
1813 I915_WRITE(dpll_reg
, temp
| DPLL_VCO_ENABLE
);
1814 I915_READ(dpll_reg
);
1815 /* Wait for the clocks to stabilize. */
1817 I915_WRITE(dpll_reg
, temp
| DPLL_VCO_ENABLE
);
1818 I915_READ(dpll_reg
);
1819 /* Wait for the clocks to stabilize. */
1823 /* Enable the pipe */
1824 temp
= I915_READ(pipeconf_reg
);
1825 if ((temp
& PIPEACONF_ENABLE
) == 0)
1826 I915_WRITE(pipeconf_reg
, temp
| PIPEACONF_ENABLE
);
1828 /* Enable the plane */
1829 temp
= I915_READ(dspcntr_reg
);
1830 if ((temp
& DISPLAY_PLANE_ENABLE
) == 0) {
1831 I915_WRITE(dspcntr_reg
, temp
| DISPLAY_PLANE_ENABLE
);
1832 /* Flush the plane changes */
1833 I915_WRITE(dspbase_reg
, I915_READ(dspbase_reg
));
1836 intel_crtc_load_lut(crtc
);
1838 if ((IS_I965G(dev
) || plane
== 0))
1839 intel_update_fbc(crtc
, &crtc
->mode
);
1841 /* Give the overlay scaler a chance to enable if it's on this pipe */
1842 //intel_crtc_dpms_video(crtc, true); TODO
1843 intel_update_watermarks(dev
);
1845 case DRM_MODE_DPMS_OFF
:
1846 intel_update_watermarks(dev
);
1847 /* Give the overlay scaler a chance to disable if it's on this pipe */
1848 //intel_crtc_dpms_video(crtc, FALSE); TODO
1850 if (dev_priv
->cfb_plane
== plane
&&
1851 dev_priv
->display
.disable_fbc
)
1852 dev_priv
->display
.disable_fbc(dev
);
1854 /* Disable the VGA plane that we never use */
1855 i915_disable_vga(dev
);
1857 /* Disable display plane */
1858 temp
= I915_READ(dspcntr_reg
);
1859 if ((temp
& DISPLAY_PLANE_ENABLE
) != 0) {
1860 I915_WRITE(dspcntr_reg
, temp
& ~DISPLAY_PLANE_ENABLE
);
1861 /* Flush the plane changes */
1862 I915_WRITE(dspbase_reg
, I915_READ(dspbase_reg
));
1863 I915_READ(dspbase_reg
);
1866 if (!IS_I9XX(dev
)) {
1867 /* Wait for vblank for the disable to take effect */
1868 intel_wait_for_vblank(dev
);
1871 /* Next, disable display pipes */
1872 temp
= I915_READ(pipeconf_reg
);
1873 if ((temp
& PIPEACONF_ENABLE
) != 0) {
1874 I915_WRITE(pipeconf_reg
, temp
& ~PIPEACONF_ENABLE
);
1875 I915_READ(pipeconf_reg
);
1878 /* Wait for vblank for the disable to take effect. */
1879 intel_wait_for_vblank(dev
);
1881 temp
= I915_READ(dpll_reg
);
1882 if ((temp
& DPLL_VCO_ENABLE
) != 0) {
1883 I915_WRITE(dpll_reg
, temp
& ~DPLL_VCO_ENABLE
);
1884 I915_READ(dpll_reg
);
1887 /* Wait for the clocks to turn off. */
1894 * Sets the power management mode of the pipe and plane.
1896 * This code should probably grow support for turning the cursor off and back
1897 * on appropriately at the same time as we're turning the pipe off/on.
1899 static void intel_crtc_dpms(struct drm_crtc
*crtc
, int mode
)
1901 struct drm_device
*dev
= crtc
->dev
;
1902 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1903 struct drm_i915_master_private
*master_priv
;
1904 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
1905 int pipe
= intel_crtc
->pipe
;
1908 dev_priv
->display
.dpms(crtc
, mode
);
1910 intel_crtc
->dpms_mode
= mode
;
1912 if (!dev
->primary
->master
)
1915 master_priv
= dev
->primary
->master
->driver_priv
;
1916 if (!master_priv
->sarea_priv
)
1919 enabled
= crtc
->enabled
&& mode
!= DRM_MODE_DPMS_OFF
;
1923 master_priv
->sarea_priv
->pipeA_w
= enabled
? crtc
->mode
.hdisplay
: 0;
1924 master_priv
->sarea_priv
->pipeA_h
= enabled
? crtc
->mode
.vdisplay
: 0;
1927 master_priv
->sarea_priv
->pipeB_w
= enabled
? crtc
->mode
.hdisplay
: 0;
1928 master_priv
->sarea_priv
->pipeB_h
= enabled
? crtc
->mode
.vdisplay
: 0;
1931 DRM_ERROR("Can't update pipe %d in SAREA\n", pipe
);
1936 static void intel_crtc_prepare (struct drm_crtc
*crtc
)
1938 struct drm_crtc_helper_funcs
*crtc_funcs
= crtc
->helper_private
;
1939 crtc_funcs
->dpms(crtc
, DRM_MODE_DPMS_OFF
);
1942 static void intel_crtc_commit (struct drm_crtc
*crtc
)
1944 struct drm_crtc_helper_funcs
*crtc_funcs
= crtc
->helper_private
;
1945 crtc_funcs
->dpms(crtc
, DRM_MODE_DPMS_ON
);
1948 void intel_encoder_prepare (struct drm_encoder
*encoder
)
1950 struct drm_encoder_helper_funcs
*encoder_funcs
= encoder
->helper_private
;
1951 /* lvds has its own version of prepare see intel_lvds_prepare */
1952 encoder_funcs
->dpms(encoder
, DRM_MODE_DPMS_OFF
);
1955 void intel_encoder_commit (struct drm_encoder
*encoder
)
1957 struct drm_encoder_helper_funcs
*encoder_funcs
= encoder
->helper_private
;
1958 /* lvds has its own version of commit see intel_lvds_commit */
1959 encoder_funcs
->dpms(encoder
, DRM_MODE_DPMS_ON
);
1962 static bool intel_crtc_mode_fixup(struct drm_crtc
*crtc
,
1963 struct drm_display_mode
*mode
,
1964 struct drm_display_mode
*adjusted_mode
)
1966 struct drm_device
*dev
= crtc
->dev
;
1967 if (IS_IGDNG(dev
)) {
1968 /* FDI link clock is fixed at 2.7G */
1969 if (mode
->clock
* 3 > 27000 * 4)
1970 return MODE_CLOCK_HIGH
;
1975 static int i945_get_display_clock_speed(struct drm_device
*dev
)
1980 static int i915_get_display_clock_speed(struct drm_device
*dev
)
1985 static int i9xx_misc_get_display_clock_speed(struct drm_device
*dev
)
1990 static int i915gm_get_display_clock_speed(struct drm_device
*dev
)
1994 pci_read_config_word(dev
->pdev
, GCFGC
, &gcfgc
);
1996 if (gcfgc
& GC_LOW_FREQUENCY_ENABLE
)
1999 switch (gcfgc
& GC_DISPLAY_CLOCK_MASK
) {
2000 case GC_DISPLAY_CLOCK_333_MHZ
:
2003 case GC_DISPLAY_CLOCK_190_200_MHZ
:
2009 static int i865_get_display_clock_speed(struct drm_device
*dev
)
2014 static int i855_get_display_clock_speed(struct drm_device
*dev
)
2017 /* Assume that the hardware is in the high speed state. This
2018 * should be the default.
2020 switch (hpllcc
& GC_CLOCK_CONTROL_MASK
) {
2021 case GC_CLOCK_133_200
:
2022 case GC_CLOCK_100_200
:
2024 case GC_CLOCK_166_250
:
2026 case GC_CLOCK_100_133
:
2030 /* Shouldn't happen */
2034 static int i830_get_display_clock_speed(struct drm_device
*dev
)
2040 * Return the pipe currently connected to the panel fitter,
2041 * or -1 if the panel fitter is not present or not in use
2043 static int intel_panel_fitter_pipe (struct drm_device
*dev
)
2045 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
2048 /* i830 doesn't have a panel fitter */
2052 pfit_control
= I915_READ(PFIT_CONTROL
);
2054 /* See if the panel fitter is in use */
2055 if ((pfit_control
& PFIT_ENABLE
) == 0)
2058 /* 965 can place panel fitter on either pipe */
2060 return (pfit_control
>> 29) & 0x3;
2062 /* older chips can only use pipe 1 */
2075 fdi_reduce_ratio(u32
*num
, u32
*den
)
2077 while (*num
> 0xffffff || *den
> 0xffffff) {
2083 #define DATA_N 0x800000
2084 #define LINK_N 0x80000
2087 igdng_compute_m_n(int bits_per_pixel
, int nlanes
,
2088 int pixel_clock
, int link_clock
,
2089 struct fdi_m_n
*m_n
)
2093 m_n
->tu
= 64; /* default size */
2095 temp
= (u64
) DATA_N
* pixel_clock
;
2096 temp
= div_u64(temp
, link_clock
);
2097 m_n
->gmch_m
= div_u64(temp
* bits_per_pixel
, nlanes
);
2098 m_n
->gmch_m
>>= 3; /* convert to bytes_per_pixel */
2099 m_n
->gmch_n
= DATA_N
;
2100 fdi_reduce_ratio(&m_n
->gmch_m
, &m_n
->gmch_n
);
2102 temp
= (u64
) LINK_N
* pixel_clock
;
2103 m_n
->link_m
= div_u64(temp
, link_clock
);
2104 m_n
->link_n
= LINK_N
;
2105 fdi_reduce_ratio(&m_n
->link_m
, &m_n
->link_n
);
2109 struct intel_watermark_params
{
2110 unsigned long fifo_size
;
2111 unsigned long max_wm
;
2112 unsigned long default_wm
;
2113 unsigned long guard_size
;
2114 unsigned long cacheline_size
;
2117 /* IGD has different values for various configs */
2118 static struct intel_watermark_params igd_display_wm
= {
2125 static struct intel_watermark_params igd_display_hplloff_wm
= {
2132 static struct intel_watermark_params igd_cursor_wm
= {
2136 IGD_CURSOR_GUARD_WM
,
2139 static struct intel_watermark_params igd_cursor_hplloff_wm
= {
2143 IGD_CURSOR_GUARD_WM
,
2146 static struct intel_watermark_params g4x_wm_info
= {
2153 static struct intel_watermark_params i945_wm_info
= {
2160 static struct intel_watermark_params i915_wm_info
= {
2167 static struct intel_watermark_params i855_wm_info
= {
2174 static struct intel_watermark_params i830_wm_info
= {
2183 * intel_calculate_wm - calculate watermark level
2184 * @clock_in_khz: pixel clock
2185 * @wm: chip FIFO params
2186 * @pixel_size: display pixel size
2187 * @latency_ns: memory latency for the platform
2189 * Calculate the watermark level (the level at which the display plane will
2190 * start fetching from memory again). Each chip has a different display
2191 * FIFO size and allocation, so the caller needs to figure that out and pass
2192 * in the correct intel_watermark_params structure.
2194 * As the pixel clock runs, the FIFO will be drained at a rate that depends
2195 * on the pixel size. When it reaches the watermark level, it'll start
2196 * fetching FIFO line sized based chunks from memory until the FIFO fills
2197 * past the watermark point. If the FIFO drains completely, a FIFO underrun
2198 * will occur, and a display engine hang could result.
2200 static unsigned long intel_calculate_wm(unsigned long clock_in_khz
,
2201 struct intel_watermark_params
*wm
,
2203 unsigned long latency_ns
)
2205 long entries_required
, wm_size
;
2208 * Note: we need to make sure we don't overflow for various clock &
2210 * clocks go from a few thousand to several hundred thousand.
2211 * latency is usually a few thousand
2213 entries_required
= ((clock_in_khz
/ 1000) * pixel_size
* latency_ns
) /
2215 entries_required
/= wm
->cacheline_size
;
2217 DRM_DEBUG("FIFO entries required for mode: %d\n", entries_required
);
2219 wm_size
= wm
->fifo_size
- (entries_required
+ wm
->guard_size
);
2221 DRM_DEBUG("FIFO watermark level: %d\n", wm_size
);
2223 /* Don't promote wm_size to unsigned... */
2224 if (wm_size
> (long)wm
->max_wm
)
2225 wm_size
= wm
->max_wm
;
2227 wm_size
= wm
->default_wm
;
2231 struct cxsr_latency
{
2233 unsigned long fsb_freq
;
2234 unsigned long mem_freq
;
2235 unsigned long display_sr
;
2236 unsigned long display_hpll_disable
;
2237 unsigned long cursor_sr
;
2238 unsigned long cursor_hpll_disable
;
2241 static struct cxsr_latency cxsr_latency_table
[] = {
2242 {1, 800, 400, 3382, 33382, 3983, 33983}, /* DDR2-400 SC */
2243 {1, 800, 667, 3354, 33354, 3807, 33807}, /* DDR2-667 SC */
2244 {1, 800, 800, 3347, 33347, 3763, 33763}, /* DDR2-800 SC */
2246 {1, 667, 400, 3400, 33400, 4021, 34021}, /* DDR2-400 SC */
2247 {1, 667, 667, 3372, 33372, 3845, 33845}, /* DDR2-667 SC */
2248 {1, 667, 800, 3386, 33386, 3822, 33822}, /* DDR2-800 SC */
2250 {1, 400, 400, 3472, 33472, 4173, 34173}, /* DDR2-400 SC */
2251 {1, 400, 667, 3443, 33443, 3996, 33996}, /* DDR2-667 SC */
2252 {1, 400, 800, 3430, 33430, 3946, 33946}, /* DDR2-800 SC */
2254 {0, 800, 400, 3438, 33438, 4065, 34065}, /* DDR2-400 SC */
2255 {0, 800, 667, 3410, 33410, 3889, 33889}, /* DDR2-667 SC */
2256 {0, 800, 800, 3403, 33403, 3845, 33845}, /* DDR2-800 SC */
2258 {0, 667, 400, 3456, 33456, 4103, 34106}, /* DDR2-400 SC */
2259 {0, 667, 667, 3428, 33428, 3927, 33927}, /* DDR2-667 SC */
2260 {0, 667, 800, 3443, 33443, 3905, 33905}, /* DDR2-800 SC */
2262 {0, 400, 400, 3528, 33528, 4255, 34255}, /* DDR2-400 SC */
2263 {0, 400, 667, 3500, 33500, 4079, 34079}, /* DDR2-667 SC */
2264 {0, 400, 800, 3487, 33487, 4029, 34029}, /* DDR2-800 SC */
2267 static struct cxsr_latency
*intel_get_cxsr_latency(int is_desktop
, int fsb
,
2271 struct cxsr_latency
*latency
;
2273 if (fsb
== 0 || mem
== 0)
2276 for (i
= 0; i
< ARRAY_SIZE(cxsr_latency_table
); i
++) {
2277 latency
= &cxsr_latency_table
[i
];
2278 if (is_desktop
== latency
->is_desktop
&&
2279 fsb
== latency
->fsb_freq
&& mem
== latency
->mem_freq
)
2283 DRM_DEBUG("Unknown FSB/MEM found, disable CxSR\n");
2288 static void igd_disable_cxsr(struct drm_device
*dev
)
2290 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
2293 /* deactivate cxsr */
2294 reg
= I915_READ(DSPFW3
);
2295 reg
&= ~(IGD_SELF_REFRESH_EN
);
2296 I915_WRITE(DSPFW3
, reg
);
2297 DRM_INFO("Big FIFO is disabled\n");
2300 static void igd_enable_cxsr(struct drm_device
*dev
, unsigned long clock
,
2303 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
2306 struct cxsr_latency
*latency
;
2308 latency
= intel_get_cxsr_latency(IS_IGDG(dev
), dev_priv
->fsb_freq
,
2309 dev_priv
->mem_freq
);
2311 DRM_DEBUG("Unknown FSB/MEM found, disable CxSR\n");
2312 igd_disable_cxsr(dev
);
2317 wm
= intel_calculate_wm(clock
, &igd_display_wm
, pixel_size
,
2318 latency
->display_sr
);
2319 reg
= I915_READ(DSPFW1
);
2322 I915_WRITE(DSPFW1
, reg
);
2323 DRM_DEBUG("DSPFW1 register is %x\n", reg
);
2326 wm
= intel_calculate_wm(clock
, &igd_cursor_wm
, pixel_size
,
2327 latency
->cursor_sr
);
2328 reg
= I915_READ(DSPFW3
);
2329 reg
&= ~(0x3f << 24);
2330 reg
|= (wm
& 0x3f) << 24;
2331 I915_WRITE(DSPFW3
, reg
);
2333 /* Display HPLL off SR */
2334 wm
= intel_calculate_wm(clock
, &igd_display_hplloff_wm
,
2335 latency
->display_hpll_disable
, I915_FIFO_LINE_SIZE
);
2336 reg
= I915_READ(DSPFW3
);
2339 I915_WRITE(DSPFW3
, reg
);
2341 /* cursor HPLL off SR */
2342 wm
= intel_calculate_wm(clock
, &igd_cursor_hplloff_wm
, pixel_size
,
2343 latency
->cursor_hpll_disable
);
2344 reg
= I915_READ(DSPFW3
);
2345 reg
&= ~(0x3f << 16);
2346 reg
|= (wm
& 0x3f) << 16;
2347 I915_WRITE(DSPFW3
, reg
);
2348 DRM_DEBUG("DSPFW3 register is %x\n", reg
);
2351 reg
= I915_READ(DSPFW3
);
2352 reg
|= IGD_SELF_REFRESH_EN
;
2353 I915_WRITE(DSPFW3
, reg
);
2355 DRM_INFO("Big FIFO is enabled\n");
2361 * Latency for FIFO fetches is dependent on several factors:
2362 * - memory configuration (speed, channels)
2364 * - current MCH state
2365 * It can be fairly high in some situations, so here we assume a fairly
2366 * pessimal value. It's a tradeoff between extra memory fetches (if we
2367 * set this value too high, the FIFO will fetch frequently to stay full)
2368 * and power consumption (set it too low to save power and we might see
2369 * FIFO underruns and display "flicker").
2371 * A value of 5us seems to be a good balance; safe for very low end
2372 * platforms but not overly aggressive on lower latency configs.
2374 const static int latency_ns
= 5000;
2376 static int i9xx_get_fifo_size(struct drm_device
*dev
, int plane
)
2378 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
2379 uint32_t dsparb
= I915_READ(DSPARB
);
2383 size
= dsparb
& 0x7f;
2385 size
= ((dsparb
>> DSPARB_CSTART_SHIFT
) & 0x7f) -
2388 DRM_DEBUG("FIFO size - (0x%08x) %s: %d\n", dsparb
, plane
? "B" : "A",
2394 static int i85x_get_fifo_size(struct drm_device
*dev
, int plane
)
2396 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
2397 uint32_t dsparb
= I915_READ(DSPARB
);
2401 size
= dsparb
& 0x1ff;
2403 size
= ((dsparb
>> DSPARB_BEND_SHIFT
) & 0x1ff) -
2405 size
>>= 1; /* Convert to cachelines */
2407 DRM_DEBUG("FIFO size - (0x%08x) %s: %d\n", dsparb
, plane
? "B" : "A",
2413 static int i845_get_fifo_size(struct drm_device
*dev
, int plane
)
2415 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
2416 uint32_t dsparb
= I915_READ(DSPARB
);
2419 size
= dsparb
& 0x7f;
2420 size
>>= 2; /* Convert to cachelines */
2422 DRM_DEBUG("FIFO size - (0x%08x) %s: %d\n", dsparb
, plane
? "B" : "A",
2428 static int i830_get_fifo_size(struct drm_device
*dev
, int plane
)
2430 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
2431 uint32_t dsparb
= I915_READ(DSPARB
);
2434 size
= dsparb
& 0x7f;
2435 size
>>= 1; /* Convert to cachelines */
2437 DRM_DEBUG("FIFO size - (0x%08x) %s: %d\n", dsparb
, plane
? "B" : "A",
2443 static void g4x_update_wm(struct drm_device
*dev
, int planea_clock
,
2444 int planeb_clock
, int sr_hdisplay
, int pixel_size
)
2446 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
2447 int total_size
, cacheline_size
;
2448 int planea_wm
, planeb_wm
, cursora_wm
, cursorb_wm
, cursor_sr
;
2449 struct intel_watermark_params planea_params
, planeb_params
;
2450 unsigned long line_time_us
;
2451 int sr_clock
, sr_entries
= 0, entries_required
;
2453 /* Create copies of the base settings for each pipe */
2454 planea_params
= planeb_params
= g4x_wm_info
;
2456 /* Grab a couple of global values before we overwrite them */
2457 total_size
= planea_params
.fifo_size
;
2458 cacheline_size
= planea_params
.cacheline_size
;
2461 * Note: we need to make sure we don't overflow for various clock &
2463 * clocks go from a few thousand to several hundred thousand.
2464 * latency is usually a few thousand
2466 entries_required
= ((planea_clock
/ 1000) * pixel_size
* latency_ns
) /
2468 entries_required
/= G4X_FIFO_LINE_SIZE
;
2469 planea_wm
= entries_required
+ planea_params
.guard_size
;
2471 entries_required
= ((planeb_clock
/ 1000) * pixel_size
* latency_ns
) /
2473 entries_required
/= G4X_FIFO_LINE_SIZE
;
2474 planeb_wm
= entries_required
+ planeb_params
.guard_size
;
2476 cursora_wm
= cursorb_wm
= 16;
2479 DRM_DEBUG("FIFO watermarks - A: %d, B: %d\n", planea_wm
, planeb_wm
);
2481 /* Calc sr entries for one plane configs */
2482 if (sr_hdisplay
&& (!planea_clock
|| !planeb_clock
)) {
2483 /* self-refresh has much higher latency */
2484 const static int sr_latency_ns
= 12000;
2486 sr_clock
= planea_clock
? planea_clock
: planeb_clock
;
2487 line_time_us
= ((sr_hdisplay
* 1000) / sr_clock
);
2489 /* Use ns/us then divide to preserve precision */
2490 sr_entries
= (((sr_latency_ns
/ line_time_us
) + 1) *
2491 pixel_size
* sr_hdisplay
) / 1000;
2492 sr_entries
= roundup(sr_entries
/ cacheline_size
, 1);
2493 DRM_DEBUG("self-refresh entries: %d\n", sr_entries
);
2494 I915_WRITE(FW_BLC_SELF
, FW_BLC_SELF_EN
);
2497 DRM_DEBUG("Setting FIFO watermarks - A: %d, B: %d, SR %d\n",
2498 planea_wm
, planeb_wm
, sr_entries
);
2503 I915_WRITE(DSPFW1
, (sr_entries
<< DSPFW_SR_SHIFT
) |
2504 (cursorb_wm
<< DSPFW_CURSORB_SHIFT
) |
2505 (planeb_wm
<< DSPFW_PLANEB_SHIFT
) | planea_wm
);
2506 I915_WRITE(DSPFW2
, (I915_READ(DSPFW2
) & DSPFW_CURSORA_MASK
) |
2507 (cursora_wm
<< DSPFW_CURSORA_SHIFT
));
2508 /* HPLL off in SR has some issues on G4x... disable it */
2509 I915_WRITE(DSPFW3
, (I915_READ(DSPFW3
) & ~DSPFW_HPLL_SR_EN
) |
2510 (cursor_sr
<< DSPFW_CURSOR_SR_SHIFT
));
2513 static void i965_update_wm(struct drm_device
*dev
, int unused
, int unused2
,
2514 int unused3
, int unused4
)
2516 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
2518 DRM_DEBUG("Setting FIFO watermarks - A: 8, B: 8, C: 8, SR 8\n");
2520 /* 965 has limitations... */
2521 I915_WRITE(DSPFW1
, (8 << 16) | (8 << 8) | (8 << 0));
2522 I915_WRITE(DSPFW2
, (8 << 8) | (8 << 0));
2525 static void i9xx_update_wm(struct drm_device
*dev
, int planea_clock
,
2526 int planeb_clock
, int sr_hdisplay
, int pixel_size
)
2528 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
2531 int total_size
, cacheline_size
, cwm
, srwm
= 1;
2532 int planea_wm
, planeb_wm
;
2533 struct intel_watermark_params planea_params
, planeb_params
;
2534 unsigned long line_time_us
;
2535 int sr_clock
, sr_entries
= 0;
2537 /* Create copies of the base settings for each pipe */
2538 if (IS_I965GM(dev
) || IS_I945GM(dev
))
2539 planea_params
= planeb_params
= i945_wm_info
;
2540 else if (IS_I9XX(dev
))
2541 planea_params
= planeb_params
= i915_wm_info
;
2543 planea_params
= planeb_params
= i855_wm_info
;
2545 /* Grab a couple of global values before we overwrite them */
2546 total_size
= planea_params
.fifo_size
;
2547 cacheline_size
= planea_params
.cacheline_size
;
2549 /* Update per-plane FIFO sizes */
2550 planea_params
.fifo_size
= dev_priv
->display
.get_fifo_size(dev
, 0);
2551 planeb_params
.fifo_size
= dev_priv
->display
.get_fifo_size(dev
, 1);
2553 planea_wm
= intel_calculate_wm(planea_clock
, &planea_params
,
2554 pixel_size
, latency_ns
);
2555 planeb_wm
= intel_calculate_wm(planeb_clock
, &planeb_params
,
2556 pixel_size
, latency_ns
);
2557 DRM_DEBUG("FIFO watermarks - A: %d, B: %d\n", planea_wm
, planeb_wm
);
2560 * Overlay gets an aggressive default since video jitter is bad.
2564 /* Calc sr entries for one plane configs */
2565 if (HAS_FW_BLC(dev
) && sr_hdisplay
&&
2566 (!planea_clock
|| !planeb_clock
)) {
2567 /* self-refresh has much higher latency */
2568 const static int sr_latency_ns
= 6000;
2570 sr_clock
= planea_clock
? planea_clock
: planeb_clock
;
2571 line_time_us
= ((sr_hdisplay
* 1000) / sr_clock
);
2573 /* Use ns/us then divide to preserve precision */
2574 sr_entries
= (((sr_latency_ns
/ line_time_us
) + 1) *
2575 pixel_size
* sr_hdisplay
) / 1000;
2576 sr_entries
= roundup(sr_entries
/ cacheline_size
, 1);
2577 DRM_DEBUG("self-refresh entries: %d\n", sr_entries
);
2578 srwm
= total_size
- sr_entries
;
2581 I915_WRITE(FW_BLC_SELF
, FW_BLC_SELF_EN
| (srwm
& 0x3f));
2584 DRM_DEBUG("Setting FIFO watermarks - A: %d, B: %d, C: %d, SR %d\n",
2585 planea_wm
, planeb_wm
, cwm
, srwm
);
2587 fwater_lo
= ((planeb_wm
& 0x3f) << 16) | (planea_wm
& 0x3f);
2588 fwater_hi
= (cwm
& 0x1f);
2590 /* Set request length to 8 cachelines per fetch */
2591 fwater_lo
= fwater_lo
| (1 << 24) | (1 << 8);
2592 fwater_hi
= fwater_hi
| (1 << 8);
2594 I915_WRITE(FW_BLC
, fwater_lo
);
2595 I915_WRITE(FW_BLC2
, fwater_hi
);
2598 static void i830_update_wm(struct drm_device
*dev
, int planea_clock
, int unused
,
2599 int unused2
, int pixel_size
)
2601 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
2602 uint32_t fwater_lo
= I915_READ(FW_BLC
) & ~0xfff;
2605 i830_wm_info
.fifo_size
= dev_priv
->display
.get_fifo_size(dev
, 0);
2607 planea_wm
= intel_calculate_wm(planea_clock
, &i830_wm_info
,
2608 pixel_size
, latency_ns
);
2609 fwater_lo
|= (3<<8) | planea_wm
;
2611 DRM_DEBUG("Setting FIFO watermarks - A: %d\n", planea_wm
);
2613 I915_WRITE(FW_BLC
, fwater_lo
);
2617 * intel_update_watermarks - update FIFO watermark values based on current modes
2619 * Calculate watermark values for the various WM regs based on current mode
2620 * and plane configuration.
2622 * There are several cases to deal with here:
2623 * - normal (i.e. non-self-refresh)
2624 * - self-refresh (SR) mode
2625 * - lines are large relative to FIFO size (buffer can hold up to 2)
2626 * - lines are small relative to FIFO size (buffer can hold more than 2
2627 * lines), so need to account for TLB latency
2629 * The normal calculation is:
2630 * watermark = dotclock * bytes per pixel * latency
2631 * where latency is platform & configuration dependent (we assume pessimal
2634 * The SR calculation is:
2635 * watermark = (trunc(latency/line time)+1) * surface width *
2638 * line time = htotal / dotclock
2639 * and latency is assumed to be high, as above.
2641 * The final value programmed to the register should always be rounded up,
2642 * and include an extra 2 entries to account for clock crossings.
2644 * We don't use the sprite, so we can ignore that. And on Crestline we have
2645 * to set the non-SR watermarks to 8.
2647 static void intel_update_watermarks(struct drm_device
*dev
)
2649 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
2650 struct drm_crtc
*crtc
;
2651 struct intel_crtc
*intel_crtc
;
2652 int sr_hdisplay
= 0;
2653 unsigned long planea_clock
= 0, planeb_clock
= 0, sr_clock
= 0;
2654 int enabled
= 0, pixel_size
= 0;
2656 if (!dev_priv
->display
.update_wm
)
2659 /* Get the clock config from both planes */
2660 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
) {
2661 intel_crtc
= to_intel_crtc(crtc
);
2662 if (crtc
->enabled
) {
2664 if (intel_crtc
->plane
== 0) {
2665 DRM_DEBUG("plane A (pipe %d) clock: %d\n",
2666 intel_crtc
->pipe
, crtc
->mode
.clock
);
2667 planea_clock
= crtc
->mode
.clock
;
2669 DRM_DEBUG("plane B (pipe %d) clock: %d\n",
2670 intel_crtc
->pipe
, crtc
->mode
.clock
);
2671 planeb_clock
= crtc
->mode
.clock
;
2673 sr_hdisplay
= crtc
->mode
.hdisplay
;
2674 sr_clock
= crtc
->mode
.clock
;
2676 pixel_size
= crtc
->fb
->bits_per_pixel
/ 8;
2678 pixel_size
= 4; /* by default */
2685 /* Single plane configs can enable self refresh */
2686 if (enabled
== 1 && IS_IGD(dev
))
2687 igd_enable_cxsr(dev
, sr_clock
, pixel_size
);
2688 else if (IS_IGD(dev
))
2689 igd_disable_cxsr(dev
);
2691 dev_priv
->display
.update_wm(dev
, planea_clock
, planeb_clock
,
2692 sr_hdisplay
, pixel_size
);
2695 static int intel_crtc_mode_set(struct drm_crtc
*crtc
,
2696 struct drm_display_mode
*mode
,
2697 struct drm_display_mode
*adjusted_mode
,
2699 struct drm_framebuffer
*old_fb
)
2701 struct drm_device
*dev
= crtc
->dev
;
2702 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
2703 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
2704 int pipe
= intel_crtc
->pipe
;
2705 int plane
= intel_crtc
->plane
;
2706 int fp_reg
= (pipe
== 0) ? FPA0
: FPB0
;
2707 int dpll_reg
= (pipe
== 0) ? DPLL_A
: DPLL_B
;
2708 int dpll_md_reg
= (intel_crtc
->pipe
== 0) ? DPLL_A_MD
: DPLL_B_MD
;
2709 int dspcntr_reg
= (plane
== 0) ? DSPACNTR
: DSPBCNTR
;
2710 int pipeconf_reg
= (pipe
== 0) ? PIPEACONF
: PIPEBCONF
;
2711 int htot_reg
= (pipe
== 0) ? HTOTAL_A
: HTOTAL_B
;
2712 int hblank_reg
= (pipe
== 0) ? HBLANK_A
: HBLANK_B
;
2713 int hsync_reg
= (pipe
== 0) ? HSYNC_A
: HSYNC_B
;
2714 int vtot_reg
= (pipe
== 0) ? VTOTAL_A
: VTOTAL_B
;
2715 int vblank_reg
= (pipe
== 0) ? VBLANK_A
: VBLANK_B
;
2716 int vsync_reg
= (pipe
== 0) ? VSYNC_A
: VSYNC_B
;
2717 int dspsize_reg
= (plane
== 0) ? DSPASIZE
: DSPBSIZE
;
2718 int dsppos_reg
= (plane
== 0) ? DSPAPOS
: DSPBPOS
;
2719 int pipesrc_reg
= (pipe
== 0) ? PIPEASRC
: PIPEBSRC
;
2720 int refclk
, num_outputs
= 0;
2721 intel_clock_t clock
, reduced_clock
;
2722 u32 dpll
= 0, fp
= 0, fp2
= 0, dspcntr
, pipeconf
;
2723 bool ok
, has_reduced_clock
= false, is_sdvo
= false, is_dvo
= false;
2724 bool is_crt
= false, is_lvds
= false, is_tv
= false, is_dp
= false;
2725 bool is_edp
= false;
2726 struct drm_mode_config
*mode_config
= &dev
->mode_config
;
2727 struct drm_connector
*connector
;
2728 const intel_limit_t
*limit
;
2730 struct fdi_m_n m_n
= {0};
2731 int data_m1_reg
= (pipe
== 0) ? PIPEA_DATA_M1
: PIPEB_DATA_M1
;
2732 int data_n1_reg
= (pipe
== 0) ? PIPEA_DATA_N1
: PIPEB_DATA_N1
;
2733 int link_m1_reg
= (pipe
== 0) ? PIPEA_LINK_M1
: PIPEB_LINK_M1
;
2734 int link_n1_reg
= (pipe
== 0) ? PIPEA_LINK_N1
: PIPEB_LINK_N1
;
2735 int pch_fp_reg
= (pipe
== 0) ? PCH_FPA0
: PCH_FPB0
;
2736 int pch_dpll_reg
= (pipe
== 0) ? PCH_DPLL_A
: PCH_DPLL_B
;
2737 int fdi_rx_reg
= (pipe
== 0) ? FDI_RXA_CTL
: FDI_RXB_CTL
;
2738 int lvds_reg
= LVDS
;
2740 int sdvo_pixel_multiply
;
2743 drm_vblank_pre_modeset(dev
, pipe
);
2745 list_for_each_entry(connector
, &mode_config
->connector_list
, head
) {
2746 struct intel_output
*intel_output
= to_intel_output(connector
);
2748 if (!connector
->encoder
|| connector
->encoder
->crtc
!= crtc
)
2751 switch (intel_output
->type
) {
2752 case INTEL_OUTPUT_LVDS
:
2755 case INTEL_OUTPUT_SDVO
:
2756 case INTEL_OUTPUT_HDMI
:
2758 if (intel_output
->needs_tv_clock
)
2761 case INTEL_OUTPUT_DVO
:
2764 case INTEL_OUTPUT_TVOUT
:
2767 case INTEL_OUTPUT_ANALOG
:
2770 case INTEL_OUTPUT_DISPLAYPORT
:
2773 case INTEL_OUTPUT_EDP
:
2781 if (is_lvds
&& dev_priv
->lvds_use_ssc
&& num_outputs
< 2) {
2782 refclk
= dev_priv
->lvds_ssc_freq
* 1000;
2783 DRM_DEBUG("using SSC reference clock of %d MHz\n", refclk
/ 1000);
2784 } else if (IS_I9XX(dev
)) {
2787 refclk
= 120000; /* 120Mhz refclk */
2794 * Returns a set of divisors for the desired target clock with the given
2795 * refclk, or FALSE. The returned values represent the clock equation:
2796 * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
2798 limit
= intel_limit(crtc
);
2799 ok
= limit
->find_pll(limit
, crtc
, adjusted_mode
->clock
, refclk
, &clock
);
2801 DRM_ERROR("Couldn't find PLL settings for mode!\n");
2802 drm_vblank_post_modeset(dev
, pipe
);
2806 if (limit
->find_reduced_pll
&& dev_priv
->lvds_downclock_avail
) {
2807 memcpy(&reduced_clock
, &clock
, sizeof(intel_clock_t
));
2808 has_reduced_clock
= limit
->find_reduced_pll(limit
, crtc
,
2809 (adjusted_mode
->clock
*3/4),
2814 /* SDVO TV has fixed PLL values depend on its clock range,
2815 this mirrors vbios setting. */
2816 if (is_sdvo
&& is_tv
) {
2817 if (adjusted_mode
->clock
>= 100000
2818 && adjusted_mode
->clock
< 140500) {
2824 } else if (adjusted_mode
->clock
>= 140500
2825 && adjusted_mode
->clock
<= 200000) {
2835 if (IS_IGDNG(dev
)) {
2836 int lane
, link_bw
, bpp
;
2837 /* eDP doesn't require FDI link, so just set DP M/N
2838 according to current link config */
2840 struct drm_connector
*edp
;
2841 target_clock
= mode
->clock
;
2842 edp
= intel_pipe_get_output(crtc
);
2843 intel_edp_link_config(to_intel_output(edp
),
2846 /* DP over FDI requires target mode clock
2847 instead of link clock */
2849 target_clock
= mode
->clock
;
2851 target_clock
= adjusted_mode
->clock
;
2856 /* determine panel color depth */
2857 temp
= I915_READ(pipeconf_reg
);
2859 switch (temp
& PIPE_BPC_MASK
) {
2873 DRM_ERROR("unknown pipe bpc value\n");
2877 igdng_compute_m_n(bpp
, lane
, target_clock
,
2881 /* Ironlake: try to setup display ref clock before DPLL
2882 * enabling. This is only under driver's control after
2883 * PCH B stepping, previous chipset stepping should be
2884 * ignoring this setting.
2886 if (IS_IGDNG(dev
)) {
2887 temp
= I915_READ(PCH_DREF_CONTROL
);
2888 /* Always enable nonspread source */
2889 temp
&= ~DREF_NONSPREAD_SOURCE_MASK
;
2890 temp
|= DREF_NONSPREAD_SOURCE_ENABLE
;
2891 I915_WRITE(PCH_DREF_CONTROL
, temp
);
2892 POSTING_READ(PCH_DREF_CONTROL
);
2894 temp
&= ~DREF_SSC_SOURCE_MASK
;
2895 temp
|= DREF_SSC_SOURCE_ENABLE
;
2896 I915_WRITE(PCH_DREF_CONTROL
, temp
);
2897 POSTING_READ(PCH_DREF_CONTROL
);
2902 if (dev_priv
->lvds_use_ssc
) {
2903 temp
|= DREF_SSC1_ENABLE
;
2904 I915_WRITE(PCH_DREF_CONTROL
, temp
);
2905 POSTING_READ(PCH_DREF_CONTROL
);
2909 temp
&= ~DREF_CPU_SOURCE_OUTPUT_MASK
;
2910 temp
|= DREF_CPU_SOURCE_OUTPUT_DOWNSPREAD
;
2911 I915_WRITE(PCH_DREF_CONTROL
, temp
);
2912 POSTING_READ(PCH_DREF_CONTROL
);
2914 temp
|= DREF_CPU_SOURCE_OUTPUT_NONSPREAD
;
2915 I915_WRITE(PCH_DREF_CONTROL
, temp
);
2916 POSTING_READ(PCH_DREF_CONTROL
);
2922 fp
= (1 << clock
.n
) << 16 | clock
.m1
<< 8 | clock
.m2
;
2923 if (has_reduced_clock
)
2924 fp2
= (1 << reduced_clock
.n
) << 16 |
2925 reduced_clock
.m1
<< 8 | reduced_clock
.m2
;
2927 fp
= clock
.n
<< 16 | clock
.m1
<< 8 | clock
.m2
;
2928 if (has_reduced_clock
)
2929 fp2
= reduced_clock
.n
<< 16 | reduced_clock
.m1
<< 8 |
2934 dpll
= DPLL_VGA_MODE_DIS
;
2938 dpll
|= DPLLB_MODE_LVDS
;
2940 dpll
|= DPLLB_MODE_DAC_SERIAL
;
2942 dpll
|= DPLL_DVO_HIGH_SPEED
;
2943 sdvo_pixel_multiply
= adjusted_mode
->clock
/ mode
->clock
;
2944 if (IS_I945G(dev
) || IS_I945GM(dev
) || IS_G33(dev
))
2945 dpll
|= (sdvo_pixel_multiply
- 1) << SDVO_MULTIPLIER_SHIFT_HIRES
;
2946 else if (IS_IGDNG(dev
))
2947 dpll
|= (sdvo_pixel_multiply
- 1) << PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT
;
2950 dpll
|= DPLL_DVO_HIGH_SPEED
;
2952 /* compute bitmask from p1 value */
2954 dpll
|= (1 << (clock
.p1
- 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT_IGD
;
2956 dpll
|= (1 << (clock
.p1
- 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT
;
2959 dpll
|= (1 << (clock
.p1
- 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT
;
2960 if (IS_G4X(dev
) && has_reduced_clock
)
2961 dpll
|= (1 << (reduced_clock
.p1
- 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT
;
2965 dpll
|= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5
;
2968 dpll
|= DPLLB_LVDS_P2_CLOCK_DIV_7
;
2971 dpll
|= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10
;
2974 dpll
|= DPLLB_LVDS_P2_CLOCK_DIV_14
;
2977 if (IS_I965G(dev
) && !IS_IGDNG(dev
))
2978 dpll
|= (6 << PLL_LOAD_PULSE_PHASE_SHIFT
);
2981 dpll
|= (1 << (clock
.p1
- 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT
;
2984 dpll
|= PLL_P1_DIVIDE_BY_TWO
;
2986 dpll
|= (clock
.p1
- 2) << DPLL_FPA01_P1_POST_DIV_SHIFT
;
2988 dpll
|= PLL_P2_DIVIDE_BY_4
;
2992 if (is_sdvo
&& is_tv
)
2993 dpll
|= PLL_REF_INPUT_TVCLKINBC
;
2995 /* XXX: just matching BIOS for now */
2996 /* dpll |= PLL_REF_INPUT_TVCLKINBC; */
2998 else if (is_lvds
&& dev_priv
->lvds_use_ssc
&& num_outputs
< 2)
2999 dpll
|= PLLB_REF_INPUT_SPREADSPECTRUMIN
;
3001 dpll
|= PLL_REF_INPUT_DREFCLK
;
3003 /* setup pipeconf */
3004 pipeconf
= I915_READ(pipeconf_reg
);
3006 /* Set up the display plane register */
3007 dspcntr
= DISPPLANE_GAMMA_ENABLE
;
3009 /* IGDNG's plane is forced to pipe, bit 24 is to
3010 enable color space conversion */
3011 if (!IS_IGDNG(dev
)) {
3013 dspcntr
&= ~DISPPLANE_SEL_PIPE_MASK
;
3015 dspcntr
|= DISPPLANE_SEL_PIPE_B
;
3018 if (pipe
== 0 && !IS_I965G(dev
)) {
3019 /* Enable pixel doubling when the dot clock is > 90% of the (display)
3022 * XXX: No double-wide on 915GM pipe B. Is that the only reason for the
3026 dev_priv
->display
.get_display_clock_speed(dev
) * 9 / 10)
3027 pipeconf
|= PIPEACONF_DOUBLE_WIDE
;
3029 pipeconf
&= ~PIPEACONF_DOUBLE_WIDE
;
3032 dspcntr
|= DISPLAY_PLANE_ENABLE
;
3033 pipeconf
|= PIPEACONF_ENABLE
;
3034 dpll
|= DPLL_VCO_ENABLE
;
3037 /* Disable the panel fitter if it was on our pipe */
3038 if (!IS_IGDNG(dev
) && intel_panel_fitter_pipe(dev
) == pipe
)
3039 I915_WRITE(PFIT_CONTROL
, 0);
3041 DRM_DEBUG("Mode for pipe %c:\n", pipe
== 0 ? 'A' : 'B');
3042 drm_mode_debug_printmodeline(mode
);
3044 /* assign to IGDNG registers */
3045 if (IS_IGDNG(dev
)) {
3046 fp_reg
= pch_fp_reg
;
3047 dpll_reg
= pch_dpll_reg
;
3051 igdng_disable_pll_edp(crtc
);
3052 } else if ((dpll
& DPLL_VCO_ENABLE
)) {
3053 I915_WRITE(fp_reg
, fp
);
3054 I915_WRITE(dpll_reg
, dpll
& ~DPLL_VCO_ENABLE
);
3055 I915_READ(dpll_reg
);
3059 /* The LVDS pin pair needs to be on before the DPLLs are enabled.
3060 * This is an exception to the general rule that mode_set doesn't turn
3067 lvds_reg
= PCH_LVDS
;
3069 lvds
= I915_READ(lvds_reg
);
3070 lvds
|= LVDS_PORT_EN
| LVDS_A0A2_CLKA_POWER_UP
| LVDS_PIPEB_SELECT
;
3071 /* set the corresponsding LVDS_BORDER bit */
3072 lvds
|= dev_priv
->lvds_border_bits
;
3073 /* Set the B0-B3 data pairs corresponding to whether we're going to
3074 * set the DPLLs for dual-channel mode or not.
3077 lvds
|= LVDS_B0B3_POWER_UP
| LVDS_CLKB_POWER_UP
;
3079 lvds
&= ~(LVDS_B0B3_POWER_UP
| LVDS_CLKB_POWER_UP
);
3081 /* It would be nice to set 24 vs 18-bit mode (LVDS_A3_POWER_UP)
3082 * appropriately here, but we need to look more thoroughly into how
3083 * panels behave in the two modes.
3086 I915_WRITE(lvds_reg
, lvds
);
3087 I915_READ(lvds_reg
);
3090 intel_dp_set_m_n(crtc
, mode
, adjusted_mode
);
3093 I915_WRITE(fp_reg
, fp
);
3094 I915_WRITE(dpll_reg
, dpll
);
3095 I915_READ(dpll_reg
);
3096 /* Wait for the clocks to stabilize. */
3099 if (IS_I965G(dev
) && !IS_IGDNG(dev
)) {
3101 sdvo_pixel_multiply
= adjusted_mode
->clock
/ mode
->clock
;
3102 I915_WRITE(dpll_md_reg
, (0 << DPLL_MD_UDI_DIVIDER_SHIFT
) |
3103 ((sdvo_pixel_multiply
- 1) << DPLL_MD_UDI_MULTIPLIER_SHIFT
));
3105 I915_WRITE(dpll_md_reg
, 0);
3107 /* write it again -- the BIOS does, after all */
3108 I915_WRITE(dpll_reg
, dpll
);
3110 I915_READ(dpll_reg
);
3111 /* Wait for the clocks to stabilize. */
3115 if (is_lvds
&& has_reduced_clock
&& i915_powersave
) {
3116 I915_WRITE(fp_reg
+ 4, fp2
);
3117 intel_crtc
->lowfreq_avail
= true;
3118 if (HAS_PIPE_CXSR(dev
)) {
3119 DRM_DEBUG("enabling CxSR downclocking\n");
3120 pipeconf
|= PIPECONF_CXSR_DOWNCLOCK
;
3123 I915_WRITE(fp_reg
+ 4, fp
);
3124 intel_crtc
->lowfreq_avail
= false;
3125 if (HAS_PIPE_CXSR(dev
)) {
3126 DRM_DEBUG("disabling CxSR downclocking\n");
3127 pipeconf
&= ~PIPECONF_CXSR_DOWNCLOCK
;
3131 I915_WRITE(htot_reg
, (adjusted_mode
->crtc_hdisplay
- 1) |
3132 ((adjusted_mode
->crtc_htotal
- 1) << 16));
3133 I915_WRITE(hblank_reg
, (adjusted_mode
->crtc_hblank_start
- 1) |
3134 ((adjusted_mode
->crtc_hblank_end
- 1) << 16));
3135 I915_WRITE(hsync_reg
, (adjusted_mode
->crtc_hsync_start
- 1) |
3136 ((adjusted_mode
->crtc_hsync_end
- 1) << 16));
3137 I915_WRITE(vtot_reg
, (adjusted_mode
->crtc_vdisplay
- 1) |
3138 ((adjusted_mode
->crtc_vtotal
- 1) << 16));
3139 I915_WRITE(vblank_reg
, (adjusted_mode
->crtc_vblank_start
- 1) |
3140 ((adjusted_mode
->crtc_vblank_end
- 1) << 16));
3141 I915_WRITE(vsync_reg
, (adjusted_mode
->crtc_vsync_start
- 1) |
3142 ((adjusted_mode
->crtc_vsync_end
- 1) << 16));
3143 /* pipesrc and dspsize control the size that is scaled from, which should
3144 * always be the user's requested size.
3146 if (!IS_IGDNG(dev
)) {
3147 I915_WRITE(dspsize_reg
, ((mode
->vdisplay
- 1) << 16) |
3148 (mode
->hdisplay
- 1));
3149 I915_WRITE(dsppos_reg
, 0);
3151 I915_WRITE(pipesrc_reg
, ((mode
->hdisplay
- 1) << 16) | (mode
->vdisplay
- 1));
3153 if (IS_IGDNG(dev
)) {
3154 I915_WRITE(data_m1_reg
, TU_SIZE(m_n
.tu
) | m_n
.gmch_m
);
3155 I915_WRITE(data_n1_reg
, TU_SIZE(m_n
.tu
) | m_n
.gmch_n
);
3156 I915_WRITE(link_m1_reg
, m_n
.link_m
);
3157 I915_WRITE(link_n1_reg
, m_n
.link_n
);
3160 igdng_set_pll_edp(crtc
, adjusted_mode
->clock
);
3162 /* enable FDI RX PLL too */
3163 temp
= I915_READ(fdi_rx_reg
);
3164 I915_WRITE(fdi_rx_reg
, temp
| FDI_RX_PLL_ENABLE
);
3169 I915_WRITE(pipeconf_reg
, pipeconf
);
3170 I915_READ(pipeconf_reg
);
3172 intel_wait_for_vblank(dev
);
3174 if (IS_IGDNG(dev
)) {
3175 /* enable address swizzle for tiling buffer */
3176 temp
= I915_READ(DISP_ARB_CTL
);
3177 I915_WRITE(DISP_ARB_CTL
, temp
| DISP_TILE_SURFACE_SWIZZLING
);
3180 I915_WRITE(dspcntr_reg
, dspcntr
);
3182 /* Flush the plane changes */
3183 ret
= intel_pipe_set_base(crtc
, x
, y
, old_fb
);
3185 if ((IS_I965G(dev
) || plane
== 0))
3186 intel_update_fbc(crtc
, &crtc
->mode
);
3188 intel_update_watermarks(dev
);
3190 drm_vblank_post_modeset(dev
, pipe
);
3195 /** Loads the palette/gamma unit for the CRTC with the prepared values */
3196 void intel_crtc_load_lut(struct drm_crtc
*crtc
)
3198 struct drm_device
*dev
= crtc
->dev
;
3199 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
3200 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
3201 int palreg
= (intel_crtc
->pipe
== 0) ? PALETTE_A
: PALETTE_B
;
3204 /* The clocks have to be on to load the palette. */
3208 /* use legacy palette for IGDNG */
3210 palreg
= (intel_crtc
->pipe
== 0) ? LGC_PALETTE_A
:
3213 for (i
= 0; i
< 256; i
++) {
3214 I915_WRITE(palreg
+ 4 * i
,
3215 (intel_crtc
->lut_r
[i
] << 16) |
3216 (intel_crtc
->lut_g
[i
] << 8) |
3217 intel_crtc
->lut_b
[i
]);
3221 static int intel_crtc_cursor_set(struct drm_crtc
*crtc
,
3222 struct drm_file
*file_priv
,
3224 uint32_t width
, uint32_t height
)
3226 struct drm_device
*dev
= crtc
->dev
;
3227 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
3228 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
3229 struct drm_gem_object
*bo
;
3230 struct drm_i915_gem_object
*obj_priv
;
3231 int pipe
= intel_crtc
->pipe
;
3232 uint32_t control
= (pipe
== 0) ? CURACNTR
: CURBCNTR
;
3233 uint32_t base
= (pipe
== 0) ? CURABASE
: CURBBASE
;
3234 uint32_t temp
= I915_READ(control
);
3240 /* if we want to turn off the cursor ignore width and height */
3242 DRM_DEBUG("cursor off\n");
3243 if (IS_MOBILE(dev
) || IS_I9XX(dev
)) {
3244 temp
&= ~(CURSOR_MODE
| MCURSOR_GAMMA_ENABLE
);
3245 temp
|= CURSOR_MODE_DISABLE
;
3247 temp
&= ~(CURSOR_ENABLE
| CURSOR_GAMMA_ENABLE
);
3251 mutex_lock(&dev
->struct_mutex
);
3255 /* Currently we only support 64x64 cursors */
3256 if (width
!= 64 || height
!= 64) {
3257 DRM_ERROR("we currently only support 64x64 cursors\n");
3261 bo
= drm_gem_object_lookup(dev
, file_priv
, handle
);
3265 obj_priv
= bo
->driver_private
;
3267 if (bo
->size
< width
* height
* 4) {
3268 DRM_ERROR("buffer is to small\n");
3273 /* we only need to pin inside GTT if cursor is non-phy */
3274 mutex_lock(&dev
->struct_mutex
);
3275 if (!dev_priv
->cursor_needs_physical
) {
3276 ret
= i915_gem_object_pin(bo
, PAGE_SIZE
);
3278 DRM_ERROR("failed to pin cursor bo\n");
3281 addr
= obj_priv
->gtt_offset
;
3283 ret
= i915_gem_attach_phys_object(dev
, bo
, (pipe
== 0) ? I915_GEM_PHYS_CURSOR_0
: I915_GEM_PHYS_CURSOR_1
);
3285 DRM_ERROR("failed to attach phys object\n");
3288 addr
= obj_priv
->phys_obj
->handle
->busaddr
;
3292 I915_WRITE(CURSIZE
, (height
<< 12) | width
);
3294 /* Hooray for CUR*CNTR differences */
3295 if (IS_MOBILE(dev
) || IS_I9XX(dev
)) {
3296 temp
&= ~(CURSOR_MODE
| MCURSOR_PIPE_SELECT
);
3297 temp
|= CURSOR_MODE_64_ARGB_AX
| MCURSOR_GAMMA_ENABLE
;
3298 temp
|= (pipe
<< 28); /* Connect to correct pipe */
3300 temp
&= ~(CURSOR_FORMAT_MASK
);
3301 temp
|= CURSOR_ENABLE
;
3302 temp
|= CURSOR_FORMAT_ARGB
| CURSOR_GAMMA_ENABLE
;
3306 I915_WRITE(control
, temp
);
3307 I915_WRITE(base
, addr
);
3309 if (intel_crtc
->cursor_bo
) {
3310 if (dev_priv
->cursor_needs_physical
) {
3311 if (intel_crtc
->cursor_bo
!= bo
)
3312 i915_gem_detach_phys_object(dev
, intel_crtc
->cursor_bo
);
3314 i915_gem_object_unpin(intel_crtc
->cursor_bo
);
3315 drm_gem_object_unreference(intel_crtc
->cursor_bo
);
3318 mutex_unlock(&dev
->struct_mutex
);
3320 intel_crtc
->cursor_addr
= addr
;
3321 intel_crtc
->cursor_bo
= bo
;
3325 mutex_lock(&dev
->struct_mutex
);
3327 drm_gem_object_unreference(bo
);
3328 mutex_unlock(&dev
->struct_mutex
);
3332 static int intel_crtc_cursor_move(struct drm_crtc
*crtc
, int x
, int y
)
3334 struct drm_device
*dev
= crtc
->dev
;
3335 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
3336 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
3337 struct intel_framebuffer
*intel_fb
;
3338 int pipe
= intel_crtc
->pipe
;
3343 intel_fb
= to_intel_framebuffer(crtc
->fb
);
3344 intel_mark_busy(dev
, intel_fb
->obj
);
3348 temp
|= CURSOR_POS_SIGN
<< CURSOR_X_SHIFT
;
3352 temp
|= CURSOR_POS_SIGN
<< CURSOR_Y_SHIFT
;
3356 temp
|= x
<< CURSOR_X_SHIFT
;
3357 temp
|= y
<< CURSOR_Y_SHIFT
;
3359 adder
= intel_crtc
->cursor_addr
;
3360 I915_WRITE((pipe
== 0) ? CURAPOS
: CURBPOS
, temp
);
3361 I915_WRITE((pipe
== 0) ? CURABASE
: CURBBASE
, adder
);
3366 /** Sets the color ramps on behalf of RandR */
3367 void intel_crtc_fb_gamma_set(struct drm_crtc
*crtc
, u16 red
, u16 green
,
3368 u16 blue
, int regno
)
3370 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
3372 intel_crtc
->lut_r
[regno
] = red
>> 8;
3373 intel_crtc
->lut_g
[regno
] = green
>> 8;
3374 intel_crtc
->lut_b
[regno
] = blue
>> 8;
3377 void intel_crtc_fb_gamma_get(struct drm_crtc
*crtc
, u16
*red
, u16
*green
,
3378 u16
*blue
, int regno
)
3380 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
3382 *red
= intel_crtc
->lut_r
[regno
] << 8;
3383 *green
= intel_crtc
->lut_g
[regno
] << 8;
3384 *blue
= intel_crtc
->lut_b
[regno
] << 8;
3387 static void intel_crtc_gamma_set(struct drm_crtc
*crtc
, u16
*red
, u16
*green
,
3388 u16
*blue
, uint32_t size
)
3390 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
3396 for (i
= 0; i
< 256; i
++) {
3397 intel_crtc
->lut_r
[i
] = red
[i
] >> 8;
3398 intel_crtc
->lut_g
[i
] = green
[i
] >> 8;
3399 intel_crtc
->lut_b
[i
] = blue
[i
] >> 8;
3402 intel_crtc_load_lut(crtc
);
3406 * Get a pipe with a simple mode set on it for doing load-based monitor
3409 * It will be up to the load-detect code to adjust the pipe as appropriate for
3410 * its requirements. The pipe will be connected to no other outputs.
3412 * Currently this code will only succeed if there is a pipe with no outputs
3413 * configured for it. In the future, it could choose to temporarily disable
3414 * some outputs to free up a pipe for its use.
3416 * \return crtc, or NULL if no pipes are available.
3419 /* VESA 640x480x72Hz mode to set on the pipe */
3420 static struct drm_display_mode load_detect_mode
= {
3421 DRM_MODE("640x480", DRM_MODE_TYPE_DEFAULT
, 31500, 640, 664,
3422 704, 832, 0, 480, 489, 491, 520, 0, DRM_MODE_FLAG_NHSYNC
| DRM_MODE_FLAG_NVSYNC
),
3425 struct drm_crtc
*intel_get_load_detect_pipe(struct intel_output
*intel_output
,
3426 struct drm_display_mode
*mode
,
3429 struct intel_crtc
*intel_crtc
;
3430 struct drm_crtc
*possible_crtc
;
3431 struct drm_crtc
*supported_crtc
=NULL
;
3432 struct drm_encoder
*encoder
= &intel_output
->enc
;
3433 struct drm_crtc
*crtc
= NULL
;
3434 struct drm_device
*dev
= encoder
->dev
;
3435 struct drm_encoder_helper_funcs
*encoder_funcs
= encoder
->helper_private
;
3436 struct drm_crtc_helper_funcs
*crtc_funcs
;
3440 * Algorithm gets a little messy:
3441 * - if the connector already has an assigned crtc, use it (but make
3442 * sure it's on first)
3443 * - try to find the first unused crtc that can drive this connector,
3444 * and use that if we find one
3445 * - if there are no unused crtcs available, try to use the first
3446 * one we found that supports the connector
3449 /* See if we already have a CRTC for this connector */
3450 if (encoder
->crtc
) {
3451 crtc
= encoder
->crtc
;
3452 /* Make sure the crtc and connector are running */
3453 intel_crtc
= to_intel_crtc(crtc
);
3454 *dpms_mode
= intel_crtc
->dpms_mode
;
3455 if (intel_crtc
->dpms_mode
!= DRM_MODE_DPMS_ON
) {
3456 crtc_funcs
= crtc
->helper_private
;
3457 crtc_funcs
->dpms(crtc
, DRM_MODE_DPMS_ON
);
3458 encoder_funcs
->dpms(encoder
, DRM_MODE_DPMS_ON
);
3463 /* Find an unused one (if possible) */
3464 list_for_each_entry(possible_crtc
, &dev
->mode_config
.crtc_list
, head
) {
3466 if (!(encoder
->possible_crtcs
& (1 << i
)))
3468 if (!possible_crtc
->enabled
) {
3469 crtc
= possible_crtc
;
3472 if (!supported_crtc
)
3473 supported_crtc
= possible_crtc
;
3477 * If we didn't find an unused CRTC, don't use any.
3483 encoder
->crtc
= crtc
;
3484 intel_output
->base
.encoder
= encoder
;
3485 intel_output
->load_detect_temp
= true;
3487 intel_crtc
= to_intel_crtc(crtc
);
3488 *dpms_mode
= intel_crtc
->dpms_mode
;
3490 if (!crtc
->enabled
) {
3492 mode
= &load_detect_mode
;
3493 drm_crtc_helper_set_mode(crtc
, mode
, 0, 0, crtc
->fb
);
3495 if (intel_crtc
->dpms_mode
!= DRM_MODE_DPMS_ON
) {
3496 crtc_funcs
= crtc
->helper_private
;
3497 crtc_funcs
->dpms(crtc
, DRM_MODE_DPMS_ON
);
3500 /* Add this connector to the crtc */
3501 encoder_funcs
->mode_set(encoder
, &crtc
->mode
, &crtc
->mode
);
3502 encoder_funcs
->commit(encoder
);
3504 /* let the connector get through one full cycle before testing */
3505 intel_wait_for_vblank(dev
);
3510 void intel_release_load_detect_pipe(struct intel_output
*intel_output
, int dpms_mode
)
3512 struct drm_encoder
*encoder
= &intel_output
->enc
;
3513 struct drm_device
*dev
= encoder
->dev
;
3514 struct drm_crtc
*crtc
= encoder
->crtc
;
3515 struct drm_encoder_helper_funcs
*encoder_funcs
= encoder
->helper_private
;
3516 struct drm_crtc_helper_funcs
*crtc_funcs
= crtc
->helper_private
;
3518 if (intel_output
->load_detect_temp
) {
3519 encoder
->crtc
= NULL
;
3520 intel_output
->base
.encoder
= NULL
;
3521 intel_output
->load_detect_temp
= false;
3522 crtc
->enabled
= drm_helper_crtc_in_use(crtc
);
3523 drm_helper_disable_unused_functions(dev
);
3526 /* Switch crtc and output back off if necessary */
3527 if (crtc
->enabled
&& dpms_mode
!= DRM_MODE_DPMS_ON
) {
3528 if (encoder
->crtc
== crtc
)
3529 encoder_funcs
->dpms(encoder
, dpms_mode
);
3530 crtc_funcs
->dpms(crtc
, dpms_mode
);
3534 /* Returns the clock of the currently programmed mode of the given pipe. */
3535 static int intel_crtc_clock_get(struct drm_device
*dev
, struct drm_crtc
*crtc
)
3537 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
3538 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
3539 int pipe
= intel_crtc
->pipe
;
3540 u32 dpll
= I915_READ((pipe
== 0) ? DPLL_A
: DPLL_B
);
3542 intel_clock_t clock
;
3544 if ((dpll
& DISPLAY_RATE_SELECT_FPA1
) == 0)
3545 fp
= I915_READ((pipe
== 0) ? FPA0
: FPB0
);
3547 fp
= I915_READ((pipe
== 0) ? FPA1
: FPB1
);
3549 clock
.m1
= (fp
& FP_M1_DIV_MASK
) >> FP_M1_DIV_SHIFT
;
3551 clock
.n
= ffs((fp
& FP_N_IGD_DIV_MASK
) >> FP_N_DIV_SHIFT
) - 1;
3552 clock
.m2
= (fp
& FP_M2_IGD_DIV_MASK
) >> FP_M2_DIV_SHIFT
;
3554 clock
.n
= (fp
& FP_N_DIV_MASK
) >> FP_N_DIV_SHIFT
;
3555 clock
.m2
= (fp
& FP_M2_DIV_MASK
) >> FP_M2_DIV_SHIFT
;
3560 clock
.p1
= ffs((dpll
& DPLL_FPA01_P1_POST_DIV_MASK_IGD
) >>
3561 DPLL_FPA01_P1_POST_DIV_SHIFT_IGD
);
3563 clock
.p1
= ffs((dpll
& DPLL_FPA01_P1_POST_DIV_MASK
) >>
3564 DPLL_FPA01_P1_POST_DIV_SHIFT
);
3566 switch (dpll
& DPLL_MODE_MASK
) {
3567 case DPLLB_MODE_DAC_SERIAL
:
3568 clock
.p2
= dpll
& DPLL_DAC_SERIAL_P2_CLOCK_DIV_5
?
3571 case DPLLB_MODE_LVDS
:
3572 clock
.p2
= dpll
& DPLLB_LVDS_P2_CLOCK_DIV_7
?
3576 DRM_DEBUG("Unknown DPLL mode %08x in programmed "
3577 "mode\n", (int)(dpll
& DPLL_MODE_MASK
));
3581 /* XXX: Handle the 100Mhz refclk */
3582 intel_clock(dev
, 96000, &clock
);
3584 bool is_lvds
= (pipe
== 1) && (I915_READ(LVDS
) & LVDS_PORT_EN
);
3587 clock
.p1
= ffs((dpll
& DPLL_FPA01_P1_POST_DIV_MASK_I830_LVDS
) >>
3588 DPLL_FPA01_P1_POST_DIV_SHIFT
);
3591 if ((dpll
& PLL_REF_INPUT_MASK
) ==
3592 PLLB_REF_INPUT_SPREADSPECTRUMIN
) {
3593 /* XXX: might not be 66MHz */
3594 intel_clock(dev
, 66000, &clock
);
3596 intel_clock(dev
, 48000, &clock
);
3598 if (dpll
& PLL_P1_DIVIDE_BY_TWO
)
3601 clock
.p1
= ((dpll
& DPLL_FPA01_P1_POST_DIV_MASK_I830
) >>
3602 DPLL_FPA01_P1_POST_DIV_SHIFT
) + 2;
3604 if (dpll
& PLL_P2_DIVIDE_BY_4
)
3609 intel_clock(dev
, 48000, &clock
);
3613 /* XXX: It would be nice to validate the clocks, but we can't reuse
3614 * i830PllIsValid() because it relies on the xf86_config connector
3615 * configuration being accurate, which it isn't necessarily.
3621 /** Returns the currently programmed mode of the given pipe. */
3622 struct drm_display_mode
*intel_crtc_mode_get(struct drm_device
*dev
,
3623 struct drm_crtc
*crtc
)
3625 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
3626 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
3627 int pipe
= intel_crtc
->pipe
;
3628 struct drm_display_mode
*mode
;
3629 int htot
= I915_READ((pipe
== 0) ? HTOTAL_A
: HTOTAL_B
);
3630 int hsync
= I915_READ((pipe
== 0) ? HSYNC_A
: HSYNC_B
);
3631 int vtot
= I915_READ((pipe
== 0) ? VTOTAL_A
: VTOTAL_B
);
3632 int vsync
= I915_READ((pipe
== 0) ? VSYNC_A
: VSYNC_B
);
3634 mode
= kzalloc(sizeof(*mode
), GFP_KERNEL
);
3638 mode
->clock
= intel_crtc_clock_get(dev
, crtc
);
3639 mode
->hdisplay
= (htot
& 0xffff) + 1;
3640 mode
->htotal
= ((htot
& 0xffff0000) >> 16) + 1;
3641 mode
->hsync_start
= (hsync
& 0xffff) + 1;
3642 mode
->hsync_end
= ((hsync
& 0xffff0000) >> 16) + 1;
3643 mode
->vdisplay
= (vtot
& 0xffff) + 1;
3644 mode
->vtotal
= ((vtot
& 0xffff0000) >> 16) + 1;
3645 mode
->vsync_start
= (vsync
& 0xffff) + 1;
3646 mode
->vsync_end
= ((vsync
& 0xffff0000) >> 16) + 1;
3648 drm_mode_set_name(mode
);
3649 drm_mode_set_crtcinfo(mode
, 0);
3654 #define GPU_IDLE_TIMEOUT 500 /* ms */
3656 /* When this timer fires, we've been idle for awhile */
3657 static void intel_gpu_idle_timer(unsigned long arg
)
3659 struct drm_device
*dev
= (struct drm_device
*)arg
;
3660 drm_i915_private_t
*dev_priv
= dev
->dev_private
;
3662 DRM_DEBUG("idle timer fired, downclocking\n");
3664 dev_priv
->busy
= false;
3666 queue_work(dev_priv
->wq
, &dev_priv
->idle_work
);
3669 void intel_increase_renderclock(struct drm_device
*dev
, bool schedule
)
3671 drm_i915_private_t
*dev_priv
= dev
->dev_private
;
3676 if (!dev_priv
->render_reclock_avail
) {
3677 DRM_DEBUG("not reclocking render clock\n");
3681 /* Restore render clock frequency to original value */
3682 if (IS_G4X(dev
) || IS_I9XX(dev
))
3683 pci_write_config_word(dev
->pdev
, GCFGC
, dev_priv
->orig_clock
);
3684 else if (IS_I85X(dev
))
3685 pci_write_config_word(dev
->pdev
, HPLLCC
, dev_priv
->orig_clock
);
3686 DRM_DEBUG("increasing render clock frequency\n");
3688 /* Schedule downclock */
3690 mod_timer(&dev_priv
->idle_timer
, jiffies
+
3691 msecs_to_jiffies(GPU_IDLE_TIMEOUT
));
3694 void intel_decrease_renderclock(struct drm_device
*dev
)
3696 drm_i915_private_t
*dev_priv
= dev
->dev_private
;
3701 if (!dev_priv
->render_reclock_avail
) {
3702 DRM_DEBUG("not reclocking render clock\n");
3709 /* Adjust render clock... */
3710 pci_read_config_word(dev
->pdev
, GCFGC
, &gcfgc
);
3712 /* Down to minimum... */
3713 gcfgc
&= ~GM45_GC_RENDER_CLOCK_MASK
;
3714 gcfgc
|= GM45_GC_RENDER_CLOCK_266_MHZ
;
3716 pci_write_config_word(dev
->pdev
, GCFGC
, gcfgc
);
3717 } else if (IS_I965G(dev
)) {
3720 /* Adjust render clock... */
3721 pci_read_config_word(dev
->pdev
, GCFGC
, &gcfgc
);
3723 /* Down to minimum... */
3724 gcfgc
&= ~I965_GC_RENDER_CLOCK_MASK
;
3725 gcfgc
|= I965_GC_RENDER_CLOCK_267_MHZ
;
3727 pci_write_config_word(dev
->pdev
, GCFGC
, gcfgc
);
3728 } else if (IS_I945G(dev
) || IS_I945GM(dev
)) {
3731 /* Adjust render clock... */
3732 pci_read_config_word(dev
->pdev
, GCFGC
, &gcfgc
);
3734 /* Down to minimum... */
3735 gcfgc
&= ~I945_GC_RENDER_CLOCK_MASK
;
3736 gcfgc
|= I945_GC_RENDER_CLOCK_166_MHZ
;
3738 pci_write_config_word(dev
->pdev
, GCFGC
, gcfgc
);
3739 } else if (IS_I915G(dev
)) {
3742 /* Adjust render clock... */
3743 pci_read_config_word(dev
->pdev
, GCFGC
, &gcfgc
);
3745 /* Down to minimum... */
3746 gcfgc
&= ~I915_GC_RENDER_CLOCK_MASK
;
3747 gcfgc
|= I915_GC_RENDER_CLOCK_166_MHZ
;
3749 pci_write_config_word(dev
->pdev
, GCFGC
, gcfgc
);
3750 } else if (IS_I85X(dev
)) {
3753 /* Adjust render clock... */
3754 pci_read_config_word(dev
->pdev
, HPLLCC
, &hpllcc
);
3756 /* Up to maximum... */
3757 hpllcc
&= ~GC_CLOCK_CONTROL_MASK
;
3758 hpllcc
|= GC_CLOCK_133_200
;
3760 pci_write_config_word(dev
->pdev
, HPLLCC
, hpllcc
);
3762 DRM_DEBUG("decreasing render clock frequency\n");
3765 /* Note that no increase function is needed for this - increase_renderclock()
3766 * will also rewrite these bits
3768 void intel_decrease_displayclock(struct drm_device
*dev
)
3773 if (IS_I945G(dev
) || IS_I945GM(dev
) || IS_I915G(dev
) ||
3777 /* Adjust render clock... */
3778 pci_read_config_word(dev
->pdev
, GCFGC
, &gcfgc
);
3780 /* Down to minimum... */
3784 pci_write_config_word(dev
->pdev
, GCFGC
, gcfgc
);
3788 #define CRTC_IDLE_TIMEOUT 1000 /* ms */
3790 static void intel_crtc_idle_timer(unsigned long arg
)
3792 struct intel_crtc
*intel_crtc
= (struct intel_crtc
*)arg
;
3793 struct drm_crtc
*crtc
= &intel_crtc
->base
;
3794 drm_i915_private_t
*dev_priv
= crtc
->dev
->dev_private
;
3796 DRM_DEBUG("idle timer fired, downclocking\n");
3798 intel_crtc
->busy
= false;
3800 queue_work(dev_priv
->wq
, &dev_priv
->idle_work
);
3803 static void intel_increase_pllclock(struct drm_crtc
*crtc
, bool schedule
)
3805 struct drm_device
*dev
= crtc
->dev
;
3806 drm_i915_private_t
*dev_priv
= dev
->dev_private
;
3807 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
3808 int pipe
= intel_crtc
->pipe
;
3809 int dpll_reg
= (pipe
== 0) ? DPLL_A
: DPLL_B
;
3810 int dpll
= I915_READ(dpll_reg
);
3815 if (!dev_priv
->lvds_downclock_avail
)
3818 if (!HAS_PIPE_CXSR(dev
) && (dpll
& DISPLAY_RATE_SELECT_FPA1
)) {
3819 DRM_DEBUG("upclocking LVDS\n");
3821 /* Unlock panel regs */
3822 I915_WRITE(PP_CONTROL
, I915_READ(PP_CONTROL
) | (0xabcd << 16));
3824 dpll
&= ~DISPLAY_RATE_SELECT_FPA1
;
3825 I915_WRITE(dpll_reg
, dpll
);
3826 dpll
= I915_READ(dpll_reg
);
3827 intel_wait_for_vblank(dev
);
3828 dpll
= I915_READ(dpll_reg
);
3829 if (dpll
& DISPLAY_RATE_SELECT_FPA1
)
3830 DRM_DEBUG("failed to upclock LVDS!\n");
3832 /* ...and lock them again */
3833 I915_WRITE(PP_CONTROL
, I915_READ(PP_CONTROL
) & 0x3);
3836 /* Schedule downclock */
3838 mod_timer(&intel_crtc
->idle_timer
, jiffies
+
3839 msecs_to_jiffies(CRTC_IDLE_TIMEOUT
));
3842 static void intel_decrease_pllclock(struct drm_crtc
*crtc
)
3844 struct drm_device
*dev
= crtc
->dev
;
3845 drm_i915_private_t
*dev_priv
= dev
->dev_private
;
3846 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
3847 int pipe
= intel_crtc
->pipe
;
3848 int dpll_reg
= (pipe
== 0) ? DPLL_A
: DPLL_B
;
3849 int dpll
= I915_READ(dpll_reg
);
3854 if (!dev_priv
->lvds_downclock_avail
)
3858 * Since this is called by a timer, we should never get here in
3861 if (!HAS_PIPE_CXSR(dev
) && intel_crtc
->lowfreq_avail
) {
3862 DRM_DEBUG("downclocking LVDS\n");
3864 /* Unlock panel regs */
3865 I915_WRITE(PP_CONTROL
, I915_READ(PP_CONTROL
) | (0xabcd << 16));
3867 dpll
|= DISPLAY_RATE_SELECT_FPA1
;
3868 I915_WRITE(dpll_reg
, dpll
);
3869 dpll
= I915_READ(dpll_reg
);
3870 intel_wait_for_vblank(dev
);
3871 dpll
= I915_READ(dpll_reg
);
3872 if (!(dpll
& DISPLAY_RATE_SELECT_FPA1
))
3873 DRM_DEBUG("failed to downclock LVDS!\n");
3875 /* ...and lock them again */
3876 I915_WRITE(PP_CONTROL
, I915_READ(PP_CONTROL
) & 0x3);
3882 * intel_idle_update - adjust clocks for idleness
3883 * @work: work struct
3885 * Either the GPU or display (or both) went idle. Check the busy status
3886 * here and adjust the CRTC and GPU clocks as necessary.
3888 static void intel_idle_update(struct work_struct
*work
)
3890 drm_i915_private_t
*dev_priv
= container_of(work
, drm_i915_private_t
,
3892 struct drm_device
*dev
= dev_priv
->dev
;
3893 struct drm_crtc
*crtc
;
3894 struct intel_crtc
*intel_crtc
;
3896 if (!i915_powersave
)
3899 mutex_lock(&dev
->struct_mutex
);
3901 /* GPU isn't processing, downclock it. */
3902 if (!dev_priv
->busy
) {
3903 intel_decrease_renderclock(dev
);
3904 intel_decrease_displayclock(dev
);
3907 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
) {
3908 /* Skip inactive CRTCs */
3912 intel_crtc
= to_intel_crtc(crtc
);
3913 if (!intel_crtc
->busy
)
3914 intel_decrease_pllclock(crtc
);
3917 mutex_unlock(&dev
->struct_mutex
);
3921 * intel_mark_busy - mark the GPU and possibly the display busy
3923 * @obj: object we're operating on
3925 * Callers can use this function to indicate that the GPU is busy processing
3926 * commands. If @obj matches one of the CRTC objects (i.e. it's a scanout
3927 * buffer), we'll also mark the display as busy, so we know to increase its
3930 void intel_mark_busy(struct drm_device
*dev
, struct drm_gem_object
*obj
)
3932 drm_i915_private_t
*dev_priv
= dev
->dev_private
;
3933 struct drm_crtc
*crtc
= NULL
;
3934 struct intel_framebuffer
*intel_fb
;
3935 struct intel_crtc
*intel_crtc
;
3937 if (!drm_core_check_feature(dev
, DRIVER_MODESET
))
3940 dev_priv
->busy
= true;
3941 intel_increase_renderclock(dev
, true);
3943 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
) {
3947 intel_crtc
= to_intel_crtc(crtc
);
3948 intel_fb
= to_intel_framebuffer(crtc
->fb
);
3949 if (intel_fb
->obj
== obj
) {
3950 if (!intel_crtc
->busy
) {
3951 /* Non-busy -> busy, upclock */
3952 intel_increase_pllclock(crtc
, true);
3953 intel_crtc
->busy
= true;
3955 /* Busy -> busy, put off timer */
3956 mod_timer(&intel_crtc
->idle_timer
, jiffies
+
3957 msecs_to_jiffies(CRTC_IDLE_TIMEOUT
));
3963 static void intel_crtc_destroy(struct drm_crtc
*crtc
)
3965 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
3967 drm_crtc_cleanup(crtc
);
3971 static const struct drm_crtc_helper_funcs intel_helper_funcs
= {
3972 .dpms
= intel_crtc_dpms
,
3973 .mode_fixup
= intel_crtc_mode_fixup
,
3974 .mode_set
= intel_crtc_mode_set
,
3975 .mode_set_base
= intel_pipe_set_base
,
3976 .prepare
= intel_crtc_prepare
,
3977 .commit
= intel_crtc_commit
,
3978 .load_lut
= intel_crtc_load_lut
,
3981 static const struct drm_crtc_funcs intel_crtc_funcs
= {
3982 .cursor_set
= intel_crtc_cursor_set
,
3983 .cursor_move
= intel_crtc_cursor_move
,
3984 .gamma_set
= intel_crtc_gamma_set
,
3985 .set_config
= drm_crtc_helper_set_config
,
3986 .destroy
= intel_crtc_destroy
,
3990 static void intel_crtc_init(struct drm_device
*dev
, int pipe
)
3992 struct intel_crtc
*intel_crtc
;
3995 intel_crtc
= kzalloc(sizeof(struct intel_crtc
) + (INTELFB_CONN_LIMIT
* sizeof(struct drm_connector
*)), GFP_KERNEL
);
3996 if (intel_crtc
== NULL
)
3999 drm_crtc_init(dev
, &intel_crtc
->base
, &intel_crtc_funcs
);
4001 drm_mode_crtc_set_gamma_size(&intel_crtc
->base
, 256);
4002 intel_crtc
->pipe
= pipe
;
4003 intel_crtc
->plane
= pipe
;
4004 for (i
= 0; i
< 256; i
++) {
4005 intel_crtc
->lut_r
[i
] = i
;
4006 intel_crtc
->lut_g
[i
] = i
;
4007 intel_crtc
->lut_b
[i
] = i
;
4010 /* Swap pipes & planes for FBC on pre-965 */
4011 intel_crtc
->pipe
= pipe
;
4012 intel_crtc
->plane
= pipe
;
4013 if (IS_MOBILE(dev
) && (IS_I9XX(dev
) && !IS_I965G(dev
))) {
4014 DRM_DEBUG("swapping pipes & planes for FBC\n");
4015 intel_crtc
->plane
= ((pipe
== 0) ? 1 : 0);
4018 intel_crtc
->cursor_addr
= 0;
4019 intel_crtc
->dpms_mode
= DRM_MODE_DPMS_OFF
;
4020 drm_crtc_helper_add(&intel_crtc
->base
, &intel_helper_funcs
);
4022 intel_crtc
->busy
= false;
4024 setup_timer(&intel_crtc
->idle_timer
, intel_crtc_idle_timer
,
4025 (unsigned long)intel_crtc
);
4028 int intel_get_pipe_from_crtc_id(struct drm_device
*dev
, void *data
,
4029 struct drm_file
*file_priv
)
4031 drm_i915_private_t
*dev_priv
= dev
->dev_private
;
4032 struct drm_i915_get_pipe_from_crtc_id
*pipe_from_crtc_id
= data
;
4033 struct drm_mode_object
*drmmode_obj
;
4034 struct intel_crtc
*crtc
;
4037 DRM_ERROR("called with no initialization\n");
4041 drmmode_obj
= drm_mode_object_find(dev
, pipe_from_crtc_id
->crtc_id
,
4042 DRM_MODE_OBJECT_CRTC
);
4045 DRM_ERROR("no such CRTC id\n");
4049 crtc
= to_intel_crtc(obj_to_crtc(drmmode_obj
));
4050 pipe_from_crtc_id
->pipe
= crtc
->pipe
;
4055 struct drm_crtc
*intel_get_crtc_from_pipe(struct drm_device
*dev
, int pipe
)
4057 struct drm_crtc
*crtc
= NULL
;
4059 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
) {
4060 struct intel_crtc
*intel_crtc
= to_intel_crtc(crtc
);
4061 if (intel_crtc
->pipe
== pipe
)
4067 static int intel_connector_clones(struct drm_device
*dev
, int type_mask
)
4070 struct drm_connector
*connector
;
4073 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
) {
4074 struct intel_output
*intel_output
= to_intel_output(connector
);
4075 if (type_mask
& intel_output
->clone_mask
)
4076 index_mask
|= (1 << entry
);
4083 static void intel_setup_outputs(struct drm_device
*dev
)
4085 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
4086 struct drm_connector
*connector
;
4088 intel_crt_init(dev
);
4090 /* Set up integrated LVDS */
4091 if (IS_MOBILE(dev
) && !IS_I830(dev
))
4092 intel_lvds_init(dev
);
4094 if (IS_IGDNG(dev
)) {
4097 if (IS_MOBILE(dev
) && (I915_READ(DP_A
) & DP_DETECTED
))
4098 intel_dp_init(dev
, DP_A
);
4100 if (I915_READ(HDMIB
) & PORT_DETECTED
) {
4102 /* found = intel_sdvo_init(dev, HDMIB); */
4105 intel_hdmi_init(dev
, HDMIB
);
4106 if (!found
&& (I915_READ(PCH_DP_B
) & DP_DETECTED
))
4107 intel_dp_init(dev
, PCH_DP_B
);
4110 if (I915_READ(HDMIC
) & PORT_DETECTED
)
4111 intel_hdmi_init(dev
, HDMIC
);
4113 if (I915_READ(HDMID
) & PORT_DETECTED
)
4114 intel_hdmi_init(dev
, HDMID
);
4116 if (I915_READ(PCH_DP_C
) & DP_DETECTED
)
4117 intel_dp_init(dev
, PCH_DP_C
);
4119 if (I915_READ(PCH_DP_D
) & DP_DETECTED
)
4120 intel_dp_init(dev
, PCH_DP_D
);
4122 } else if (IS_I9XX(dev
)) {
4125 if (I915_READ(SDVOB
) & SDVO_DETECTED
) {
4126 found
= intel_sdvo_init(dev
, SDVOB
);
4127 if (!found
&& SUPPORTS_INTEGRATED_HDMI(dev
))
4128 intel_hdmi_init(dev
, SDVOB
);
4130 if (!found
&& SUPPORTS_INTEGRATED_DP(dev
))
4131 intel_dp_init(dev
, DP_B
);
4134 /* Before G4X SDVOC doesn't have its own detect register */
4136 if (I915_READ(SDVOB
) & SDVO_DETECTED
)
4137 found
= intel_sdvo_init(dev
, SDVOC
);
4139 if (!found
&& (I915_READ(SDVOC
) & SDVO_DETECTED
)) {
4141 if (SUPPORTS_INTEGRATED_HDMI(dev
))
4142 intel_hdmi_init(dev
, SDVOC
);
4143 if (SUPPORTS_INTEGRATED_DP(dev
))
4144 intel_dp_init(dev
, DP_C
);
4147 if (SUPPORTS_INTEGRATED_DP(dev
) && (I915_READ(DP_D
) & DP_DETECTED
))
4148 intel_dp_init(dev
, DP_D
);
4150 intel_dvo_init(dev
);
4152 if (IS_I9XX(dev
) && IS_MOBILE(dev
) && !IS_IGDNG(dev
))
4155 list_for_each_entry(connector
, &dev
->mode_config
.connector_list
, head
) {
4156 struct intel_output
*intel_output
= to_intel_output(connector
);
4157 struct drm_encoder
*encoder
= &intel_output
->enc
;
4159 encoder
->possible_crtcs
= intel_output
->crtc_mask
;
4160 encoder
->possible_clones
= intel_connector_clones(dev
,
4161 intel_output
->clone_mask
);
4165 static void intel_user_framebuffer_destroy(struct drm_framebuffer
*fb
)
4167 struct intel_framebuffer
*intel_fb
= to_intel_framebuffer(fb
);
4168 struct drm_device
*dev
= fb
->dev
;
4171 intelfb_remove(dev
, fb
);
4173 drm_framebuffer_cleanup(fb
);
4174 mutex_lock(&dev
->struct_mutex
);
4175 drm_gem_object_unreference(intel_fb
->obj
);
4176 mutex_unlock(&dev
->struct_mutex
);
4181 static int intel_user_framebuffer_create_handle(struct drm_framebuffer
*fb
,
4182 struct drm_file
*file_priv
,
4183 unsigned int *handle
)
4185 struct intel_framebuffer
*intel_fb
= to_intel_framebuffer(fb
);
4186 struct drm_gem_object
*object
= intel_fb
->obj
;
4188 return drm_gem_handle_create(file_priv
, object
, handle
);
4191 static const struct drm_framebuffer_funcs intel_fb_funcs
= {
4192 .destroy
= intel_user_framebuffer_destroy
,
4193 .create_handle
= intel_user_framebuffer_create_handle
,
4196 int intel_framebuffer_create(struct drm_device
*dev
,
4197 struct drm_mode_fb_cmd
*mode_cmd
,
4198 struct drm_framebuffer
**fb
,
4199 struct drm_gem_object
*obj
)
4201 struct intel_framebuffer
*intel_fb
;
4204 intel_fb
= kzalloc(sizeof(*intel_fb
), GFP_KERNEL
);
4208 ret
= drm_framebuffer_init(dev
, &intel_fb
->base
, &intel_fb_funcs
);
4210 DRM_ERROR("framebuffer init failed %d\n", ret
);
4214 drm_helper_mode_fill_fb_struct(&intel_fb
->base
, mode_cmd
);
4216 intel_fb
->obj
= obj
;
4218 *fb
= &intel_fb
->base
;
4224 static struct drm_framebuffer
*
4225 intel_user_framebuffer_create(struct drm_device
*dev
,
4226 struct drm_file
*filp
,
4227 struct drm_mode_fb_cmd
*mode_cmd
)
4229 struct drm_gem_object
*obj
;
4230 struct drm_framebuffer
*fb
;
4233 obj
= drm_gem_object_lookup(dev
, filp
, mode_cmd
->handle
);
4237 ret
= intel_framebuffer_create(dev
, mode_cmd
, &fb
, obj
);
4239 mutex_lock(&dev
->struct_mutex
);
4240 drm_gem_object_unreference(obj
);
4241 mutex_unlock(&dev
->struct_mutex
);
4248 static const struct drm_mode_config_funcs intel_mode_funcs
= {
4249 .fb_create
= intel_user_framebuffer_create
,
4250 .fb_changed
= intelfb_probe
,
4253 void intel_init_clock_gating(struct drm_device
*dev
)
4255 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
4258 * Disable clock gating reported to work incorrectly according to the
4259 * specs, but enable as much else as we can.
4261 if (IS_IGDNG(dev
)) {
4263 } else if (IS_G4X(dev
)) {
4264 uint32_t dspclk_gate
;
4265 I915_WRITE(RENCLK_GATE_D1
, 0);
4266 I915_WRITE(RENCLK_GATE_D2
, VF_UNIT_CLOCK_GATE_DISABLE
|
4267 GS_UNIT_CLOCK_GATE_DISABLE
|
4268 CL_UNIT_CLOCK_GATE_DISABLE
);
4269 I915_WRITE(RAMCLK_GATE_D
, 0);
4270 dspclk_gate
= VRHUNIT_CLOCK_GATE_DISABLE
|
4271 OVRUNIT_CLOCK_GATE_DISABLE
|
4272 OVCUNIT_CLOCK_GATE_DISABLE
;
4274 dspclk_gate
|= DSSUNIT_CLOCK_GATE_DISABLE
;
4275 I915_WRITE(DSPCLK_GATE_D
, dspclk_gate
);
4276 } else if (IS_I965GM(dev
)) {
4277 I915_WRITE(RENCLK_GATE_D1
, I965_RCC_CLOCK_GATE_DISABLE
);
4278 I915_WRITE(RENCLK_GATE_D2
, 0);
4279 I915_WRITE(DSPCLK_GATE_D
, 0);
4280 I915_WRITE(RAMCLK_GATE_D
, 0);
4281 I915_WRITE16(DEUC
, 0);
4282 } else if (IS_I965G(dev
)) {
4283 I915_WRITE(RENCLK_GATE_D1
, I965_RCZ_CLOCK_GATE_DISABLE
|
4284 I965_RCC_CLOCK_GATE_DISABLE
|
4285 I965_RCPB_CLOCK_GATE_DISABLE
|
4286 I965_ISC_CLOCK_GATE_DISABLE
|
4287 I965_FBC_CLOCK_GATE_DISABLE
);
4288 I915_WRITE(RENCLK_GATE_D2
, 0);
4289 } else if (IS_I9XX(dev
)) {
4290 u32 dstate
= I915_READ(D_STATE
);
4292 dstate
|= DSTATE_PLL_D3_OFF
| DSTATE_GFX_CLOCK_GATING
|
4293 DSTATE_DOT_CLOCK_GATING
;
4294 I915_WRITE(D_STATE
, dstate
);
4295 } else if (IS_I855(dev
) || IS_I865G(dev
)) {
4296 I915_WRITE(RENCLK_GATE_D1
, SV_CLOCK_GATE_DISABLE
);
4297 } else if (IS_I830(dev
)) {
4298 I915_WRITE(DSPCLK_GATE_D
, OVRUNIT_CLOCK_GATE_DISABLE
);
4302 /* Set up chip specific display functions */
4303 static void intel_init_display(struct drm_device
*dev
)
4305 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
4307 /* We always want a DPMS function */
4309 dev_priv
->display
.dpms
= igdng_crtc_dpms
;
4311 dev_priv
->display
.dpms
= i9xx_crtc_dpms
;
4313 /* Only mobile has FBC, leave pointers NULL for other chips */
4314 if (IS_MOBILE(dev
)) {
4316 dev_priv
->display
.fbc_enabled
= g4x_fbc_enabled
;
4317 dev_priv
->display
.enable_fbc
= g4x_enable_fbc
;
4318 dev_priv
->display
.disable_fbc
= g4x_disable_fbc
;
4319 } else if (IS_I965GM(dev
) || IS_I945GM(dev
) || IS_I915GM(dev
)) {
4320 dev_priv
->display
.fbc_enabled
= i8xx_fbc_enabled
;
4321 dev_priv
->display
.enable_fbc
= i8xx_enable_fbc
;
4322 dev_priv
->display
.disable_fbc
= i8xx_disable_fbc
;
4324 /* 855GM needs testing */
4327 /* Returns the core display clock speed */
4329 dev_priv
->display
.get_display_clock_speed
=
4330 i945_get_display_clock_speed
;
4331 else if (IS_I915G(dev
))
4332 dev_priv
->display
.get_display_clock_speed
=
4333 i915_get_display_clock_speed
;
4334 else if (IS_I945GM(dev
) || IS_845G(dev
) || IS_IGDGM(dev
))
4335 dev_priv
->display
.get_display_clock_speed
=
4336 i9xx_misc_get_display_clock_speed
;
4337 else if (IS_I915GM(dev
))
4338 dev_priv
->display
.get_display_clock_speed
=
4339 i915gm_get_display_clock_speed
;
4340 else if (IS_I865G(dev
))
4341 dev_priv
->display
.get_display_clock_speed
=
4342 i865_get_display_clock_speed
;
4343 else if (IS_I855(dev
))
4344 dev_priv
->display
.get_display_clock_speed
=
4345 i855_get_display_clock_speed
;
4347 dev_priv
->display
.get_display_clock_speed
=
4348 i830_get_display_clock_speed
;
4350 /* For FIFO watermark updates */
4352 dev_priv
->display
.update_wm
= NULL
;
4353 else if (IS_G4X(dev
))
4354 dev_priv
->display
.update_wm
= g4x_update_wm
;
4355 else if (IS_I965G(dev
))
4356 dev_priv
->display
.update_wm
= i965_update_wm
;
4357 else if (IS_I9XX(dev
) || IS_MOBILE(dev
)) {
4358 dev_priv
->display
.update_wm
= i9xx_update_wm
;
4359 dev_priv
->display
.get_fifo_size
= i9xx_get_fifo_size
;
4362 dev_priv
->display
.get_fifo_size
= i85x_get_fifo_size
;
4363 else if (IS_845G(dev
))
4364 dev_priv
->display
.get_fifo_size
= i845_get_fifo_size
;
4366 dev_priv
->display
.get_fifo_size
= i830_get_fifo_size
;
4367 dev_priv
->display
.update_wm
= i830_update_wm
;
4371 void intel_modeset_init(struct drm_device
*dev
)
4373 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
4377 drm_mode_config_init(dev
);
4379 dev
->mode_config
.min_width
= 0;
4380 dev
->mode_config
.min_height
= 0;
4382 dev
->mode_config
.funcs
= (void *)&intel_mode_funcs
;
4384 intel_init_display(dev
);
4386 if (IS_I965G(dev
)) {
4387 dev
->mode_config
.max_width
= 8192;
4388 dev
->mode_config
.max_height
= 8192;
4389 } else if (IS_I9XX(dev
)) {
4390 dev
->mode_config
.max_width
= 4096;
4391 dev
->mode_config
.max_height
= 4096;
4393 dev
->mode_config
.max_width
= 2048;
4394 dev
->mode_config
.max_height
= 2048;
4397 /* set memory base */
4399 dev
->mode_config
.fb_base
= pci_resource_start(dev
->pdev
, 2);
4401 dev
->mode_config
.fb_base
= pci_resource_start(dev
->pdev
, 0);
4403 if (IS_MOBILE(dev
) || IS_I9XX(dev
))
4407 DRM_DEBUG("%d display pipe%s available.\n",
4408 num_pipe
, num_pipe
> 1 ? "s" : "");
4411 pci_read_config_word(dev
->pdev
, HPLLCC
, &dev_priv
->orig_clock
);
4412 else if (IS_I9XX(dev
) || IS_G4X(dev
))
4413 pci_read_config_word(dev
->pdev
, GCFGC
, &dev_priv
->orig_clock
);
4415 for (i
= 0; i
< num_pipe
; i
++) {
4416 intel_crtc_init(dev
, i
);
4419 intel_setup_outputs(dev
);
4421 intel_init_clock_gating(dev
);
4423 INIT_WORK(&dev_priv
->idle_work
, intel_idle_update
);
4424 setup_timer(&dev_priv
->idle_timer
, intel_gpu_idle_timer
,
4425 (unsigned long)dev
);
4428 void intel_modeset_cleanup(struct drm_device
*dev
)
4430 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
4431 struct drm_crtc
*crtc
;
4432 struct intel_crtc
*intel_crtc
;
4434 mutex_lock(&dev
->struct_mutex
);
4436 list_for_each_entry(crtc
, &dev
->mode_config
.crtc_list
, head
) {
4437 /* Skip inactive CRTCs */
4441 intel_crtc
= to_intel_crtc(crtc
);
4442 intel_increase_pllclock(crtc
, false);
4443 del_timer_sync(&intel_crtc
->idle_timer
);
4446 intel_increase_renderclock(dev
, false);
4447 del_timer_sync(&dev_priv
->idle_timer
);
4449 mutex_unlock(&dev
->struct_mutex
);
4451 if (dev_priv
->display
.disable_fbc
)
4452 dev_priv
->display
.disable_fbc(dev
);
4454 drm_mode_config_cleanup(dev
);
4458 /* current intel driver doesn't take advantage of encoders
4459 always give back the encoder for the connector
4461 struct drm_encoder
*intel_best_encoder(struct drm_connector
*connector
)
4463 struct intel_output
*intel_output
= to_intel_output(connector
);
4465 return &intel_output
->enc
;
4469 * set vga decode state - true == enable VGA decode
4471 int intel_modeset_vga_set_state(struct drm_device
*dev
, bool state
)
4473 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
4476 pci_read_config_word(dev_priv
->bridge_dev
, INTEL_GMCH_CTRL
, &gmch_ctrl
);
4478 gmch_ctrl
&= ~INTEL_GMCH_VGA_DISABLE
;
4480 gmch_ctrl
|= INTEL_GMCH_VGA_DISABLE
;
4481 pci_write_config_word(dev_priv
->bridge_dev
, INTEL_GMCH_CTRL
, gmch_ctrl
);