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;
869 /* eDP has only 2 clock choice, no n/m/p setting */
873 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT))
874 return intel_find_pll_igdng_dp(limit, crtc, target,
877 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
878 if ((I915_READ(PCH_LVDS) & LVDS_CLKB_POWER_MASK) ==
880 clock.p2 = limit->p2.p2_fast;
882 clock.p2 = limit->p2.p2_slow;
884 if (target < limit->p2.dot_limit)
885 clock.p2 = limit->p2.p2_slow;
887 clock.p2 = limit->p2.p2_fast;
890 memset(best_clock, 0, sizeof(*best_clock));
891 for (clock.p1 = limit->p1.max; clock.p1 >= limit->p1.min; clock.p1--) {
892 /* based on hardware requriment prefer smaller n to precision */
893 for (clock.n = limit->n.min; clock.n <= limit->n.max; clock.n++) {
894 /* based on hardware requirment prefere larger m1,m2 */
895 for (clock.m1 = limit->m1.max;
896 clock.m1 >= limit->m1.min; clock.m1--) {
897 for (clock.m2 = limit->m2.max;
898 clock.m2 >= limit->m2.min; clock.m2--) {
901 intel_clock(dev, refclk, &clock);
902 if (!intel_PLL_is_valid(crtc, &clock))
904 this_err = abs((10000 - (target*10000/clock.dot)));
905 if (this_err < err_most) {
907 /* found on first matching */
909 } else if (this_err < err_min) {
921 /* DisplayPort has only two frequencies, 162MHz and 270MHz */
923 intel_find_pll_g4x_dp(const intel_limit_t *limit, struct drm_crtc *crtc,
924 int target, int refclk, intel_clock_t *best_clock)
927 if (target < 200000) {
940 clock.m = 5 * (clock.m1 + 2) + (clock.m2 + 2);
941 clock.p = (clock.p1 * clock.p2);
942 clock.dot = 96000 * clock.m / (clock.n + 2) / clock.p;
944 memcpy(best_clock, &clock, sizeof(intel_clock_t));
949 intel_wait_for_vblank(struct drm_device *dev)
951 /* Wait for 20ms, i.e. one cycle at 50hz. */
955 /* Parameters have changed, update FBC info */
956 static void i8xx_enable_fbc(struct drm_crtc *crtc, unsigned long interval)
958 struct drm_device *dev = crtc->dev;
959 struct drm_i915_private *dev_priv = dev->dev_private;
960 struct drm_framebuffer *fb = crtc->fb;
961 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
962 struct drm_i915_gem_object *obj_priv = intel_fb->obj->driver_private;
963 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
965 u32 fbc_ctl, fbc_ctl2;
967 dev_priv->cfb_pitch = dev_priv->cfb_size / FBC_LL_SIZE;
969 if (fb->pitch < dev_priv->cfb_pitch)
970 dev_priv->cfb_pitch = fb->pitch;
972 /* FBC_CTL wants 64B units */
973 dev_priv->cfb_pitch = (dev_priv->cfb_pitch / 64) - 1;
974 dev_priv->cfb_fence = obj_priv->fence_reg;
975 dev_priv->cfb_plane = intel_crtc->plane;
976 plane = dev_priv->cfb_plane == 0 ? FBC_CTL_PLANEA : FBC_CTL_PLANEB;
979 for (i = 0; i < (FBC_LL_SIZE / 32) + 1; i++)
980 I915_WRITE(FBC_TAG + (i * 4), 0);
983 fbc_ctl2 = FBC_CTL_FENCE_DBL | FBC_CTL_IDLE_IMM | plane;
984 if (obj_priv->tiling_mode != I915_TILING_NONE)
985 fbc_ctl2 |= FBC_CTL_CPU_FENCE;
986 I915_WRITE(FBC_CONTROL2, fbc_ctl2);
987 I915_WRITE(FBC_FENCE_OFF, crtc->y);
990 fbc_ctl = FBC_CTL_EN | FBC_CTL_PERIODIC;
991 fbc_ctl |= (dev_priv->cfb_pitch & 0xff) << FBC_CTL_STRIDE_SHIFT;
992 fbc_ctl |= (interval & 0x2fff) << FBC_CTL_INTERVAL_SHIFT;
993 if (obj_priv->tiling_mode != I915_TILING_NONE)
994 fbc_ctl |= dev_priv->cfb_fence;
995 I915_WRITE(FBC_CONTROL, fbc_ctl);
997 DRM_DEBUG_KMS("enabled FBC, pitch %ld, yoff %d, plane %d, ",
998 dev_priv->cfb_pitch, crtc->y, dev_priv->cfb_plane);
1001 void i8xx_disable_fbc(struct drm_device *dev)
1003 struct drm_i915_private *dev_priv = dev->dev_private;
1006 if (!I915_HAS_FBC(dev))
1009 /* Disable compression */
1010 fbc_ctl = I915_READ(FBC_CONTROL);
1011 fbc_ctl &= ~FBC_CTL_EN;
1012 I915_WRITE(FBC_CONTROL, fbc_ctl);
1014 /* Wait for compressing bit to clear */
1015 while (I915_READ(FBC_STATUS) & FBC_STAT_COMPRESSING)
1018 intel_wait_for_vblank(dev);
1020 DRM_DEBUG_KMS("disabled FBC\n");
1023 static bool i8xx_fbc_enabled(struct drm_crtc *crtc)
1025 struct drm_device *dev = crtc->dev;
1026 struct drm_i915_private *dev_priv = dev->dev_private;
1028 return I915_READ(FBC_CONTROL) & FBC_CTL_EN;
1031 static void g4x_enable_fbc(struct drm_crtc *crtc, unsigned long interval)
1033 struct drm_device *dev = crtc->dev;
1034 struct drm_i915_private *dev_priv = dev->dev_private;
1035 struct drm_framebuffer *fb = crtc->fb;
1036 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
1037 struct drm_i915_gem_object *obj_priv = intel_fb->obj->driver_private;
1038 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1039 int plane = (intel_crtc->plane == 0 ? DPFC_CTL_PLANEA :
1041 unsigned long stall_watermark = 200;
1044 dev_priv->cfb_pitch = (dev_priv->cfb_pitch / 64) - 1;
1045 dev_priv->cfb_fence = obj_priv->fence_reg;
1046 dev_priv->cfb_plane = intel_crtc->plane;
1048 dpfc_ctl = plane | DPFC_SR_EN | DPFC_CTL_LIMIT_1X;
1049 if (obj_priv->tiling_mode != I915_TILING_NONE) {
1050 dpfc_ctl |= DPFC_CTL_FENCE_EN | dev_priv->cfb_fence;
1051 I915_WRITE(DPFC_CHICKEN, DPFC_HT_MODIFY);
1053 I915_WRITE(DPFC_CHICKEN, ~DPFC_HT_MODIFY);
1056 I915_WRITE(DPFC_CONTROL, dpfc_ctl);
1057 I915_WRITE(DPFC_RECOMP_CTL, DPFC_RECOMP_STALL_EN |
1058 (stall_watermark << DPFC_RECOMP_STALL_WM_SHIFT) |
1059 (interval << DPFC_RECOMP_TIMER_COUNT_SHIFT));
1060 I915_WRITE(DPFC_FENCE_YOFF, crtc->y);
1063 I915_WRITE(DPFC_CONTROL, I915_READ(DPFC_CONTROL) | DPFC_CTL_EN);
1065 DRM_DEBUG_KMS("enabled fbc on plane %d\n", intel_crtc->plane);
1068 void g4x_disable_fbc(struct drm_device *dev)
1070 struct drm_i915_private *dev_priv = dev->dev_private;
1073 /* Disable compression */
1074 dpfc_ctl = I915_READ(DPFC_CONTROL);
1075 dpfc_ctl &= ~DPFC_CTL_EN;
1076 I915_WRITE(DPFC_CONTROL, dpfc_ctl);
1077 intel_wait_for_vblank(dev);
1079 DRM_DEBUG_KMS("disabled FBC\n");
1082 static bool g4x_fbc_enabled(struct drm_crtc *crtc)
1084 struct drm_device *dev = crtc->dev;
1085 struct drm_i915_private *dev_priv = dev->dev_private;
1087 return I915_READ(DPFC_CONTROL) & DPFC_CTL_EN;
1091 * intel_update_fbc - enable/disable FBC as needed
1092 * @crtc: CRTC to point the compressor at
1093 * @mode: mode in use
1095 * Set up the framebuffer compression hardware at mode set time. We
1096 * enable it if possible:
1097 * - plane A only (on pre-965)
1098 * - no pixel mulitply/line duplication
1099 * - no alpha buffer discard
1101 * - framebuffer <= 2048 in width, 1536 in height
1103 * We can't assume that any compression will take place (worst case),
1104 * so the compressed buffer has to be the same size as the uncompressed
1105 * one. It also must reside (along with the line length buffer) in
1108 * We need to enable/disable FBC on a global basis.
1110 static void intel_update_fbc(struct drm_crtc *crtc,
1111 struct drm_display_mode *mode)
1113 struct drm_device *dev = crtc->dev;
1114 struct drm_i915_private *dev_priv = dev->dev_private;
1115 struct drm_framebuffer *fb = crtc->fb;
1116 struct intel_framebuffer *intel_fb;
1117 struct drm_i915_gem_object *obj_priv;
1118 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1119 int plane = intel_crtc->plane;
1121 if (!i915_powersave)
1124 if (!dev_priv->display.fbc_enabled ||
1125 !dev_priv->display.enable_fbc ||
1126 !dev_priv->display.disable_fbc)
1132 intel_fb = to_intel_framebuffer(fb);
1133 obj_priv = intel_fb->obj->driver_private;
1136 * If FBC is already on, we just have to verify that we can
1137 * keep it that way...
1138 * Need to disable if:
1139 * - changing FBC params (stride, fence, mode)
1140 * - new fb is too large to fit in compressed buffer
1141 * - going to an unsupported config (interlace, pixel multiply, etc.)
1143 if (intel_fb->obj->size > dev_priv->cfb_size) {
1144 DRM_DEBUG_KMS("framebuffer too large, disabling "
1148 if ((mode->flags & DRM_MODE_FLAG_INTERLACE) ||
1149 (mode->flags & DRM_MODE_FLAG_DBLSCAN)) {
1150 DRM_DEBUG_KMS("mode incompatible with compression, "
1154 if ((mode->hdisplay > 2048) ||
1155 (mode->vdisplay > 1536)) {
1156 DRM_DEBUG_KMS("mode too large for compression, disabling\n");
1159 if ((IS_I915GM(dev) || IS_I945GM(dev)) && plane != 0) {
1160 DRM_DEBUG_KMS("plane not 0, disabling compression\n");
1163 if (obj_priv->tiling_mode != I915_TILING_X) {
1164 DRM_DEBUG_KMS("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_KMS("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_KMS("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 if (crtc->fb->depth == 30)
1293 dspcntr |= DISPPLANE_32BPP_30BIT_NO_ALPHA;
1295 dspcntr |= DISPPLANE_32BPP_NO_ALPHA;
1298 DRM_ERROR("Unknown color depth\n");
1299 i915_gem_object_unpin(obj);
1300 mutex_unlock(&dev->struct_mutex);
1303 if (IS_I965G(dev)) {
1304 if (obj_priv->tiling_mode != I915_TILING_NONE)
1305 dspcntr |= DISPPLANE_TILED;
1307 dspcntr &= ~DISPPLANE_TILED;
1312 dspcntr |= DISPPLANE_TRICKLE_FEED_DISABLE;
1314 I915_WRITE(dspcntr_reg, dspcntr);
1316 Start = obj_priv->gtt_offset;
1317 Offset = y * crtc->fb->pitch + x * (crtc->fb->bits_per_pixel / 8);
1319 DRM_DEBUG_KMS("Writing base %08lX %08lX %d %d\n", Start, Offset, x, y);
1320 I915_WRITE(dspstride, crtc->fb->pitch);
1321 if (IS_I965G(dev)) {
1322 I915_WRITE(dspbase, Offset);
1324 I915_WRITE(dspsurf, Start);
1326 I915_WRITE(dsptileoff, (y << 16) | x);
1328 I915_WRITE(dspbase, Start + Offset);
1332 if ((IS_I965G(dev) || plane == 0))
1333 intel_update_fbc(crtc, &crtc->mode);
1335 intel_wait_for_vblank(dev);
1338 intel_fb = to_intel_framebuffer(old_fb);
1339 obj_priv = intel_fb->obj->driver_private;
1340 i915_gem_object_unpin(intel_fb->obj);
1342 intel_increase_pllclock(crtc, true);
1344 mutex_unlock(&dev->struct_mutex);
1346 if (!dev->primary->master)
1349 master_priv = dev->primary->master->driver_priv;
1350 if (!master_priv->sarea_priv)
1354 master_priv->sarea_priv->pipeB_x = x;
1355 master_priv->sarea_priv->pipeB_y = y;
1357 master_priv->sarea_priv->pipeA_x = x;
1358 master_priv->sarea_priv->pipeA_y = y;
1364 /* Disable the VGA plane that we never use */
1365 static void i915_disable_vga (struct drm_device *dev)
1367 struct drm_i915_private *dev_priv = dev->dev_private;
1372 vga_reg = CPU_VGACNTRL;
1376 if (I915_READ(vga_reg) & VGA_DISP_DISABLE)
1379 I915_WRITE8(VGA_SR_INDEX, 1);
1380 sr1 = I915_READ8(VGA_SR_DATA);
1381 I915_WRITE8(VGA_SR_DATA, sr1 | (1 << 5));
1384 I915_WRITE(vga_reg, VGA_DISP_DISABLE);
1387 static void igdng_disable_pll_edp (struct drm_crtc *crtc)
1389 struct drm_device *dev = crtc->dev;
1390 struct drm_i915_private *dev_priv = dev->dev_private;
1393 DRM_DEBUG_KMS("\n");
1394 dpa_ctl = I915_READ(DP_A);
1395 dpa_ctl &= ~DP_PLL_ENABLE;
1396 I915_WRITE(DP_A, dpa_ctl);
1399 static void igdng_enable_pll_edp (struct drm_crtc *crtc)
1401 struct drm_device *dev = crtc->dev;
1402 struct drm_i915_private *dev_priv = dev->dev_private;
1405 dpa_ctl = I915_READ(DP_A);
1406 dpa_ctl |= DP_PLL_ENABLE;
1407 I915_WRITE(DP_A, dpa_ctl);
1412 static void igdng_set_pll_edp (struct drm_crtc *crtc, int clock)
1414 struct drm_device *dev = crtc->dev;
1415 struct drm_i915_private *dev_priv = dev->dev_private;
1418 DRM_DEBUG_KMS("eDP PLL enable for clock %d\n", clock);
1419 dpa_ctl = I915_READ(DP_A);
1420 dpa_ctl &= ~DP_PLL_FREQ_MASK;
1422 if (clock < 200000) {
1424 dpa_ctl |= DP_PLL_FREQ_160MHZ;
1425 /* workaround for 160Mhz:
1426 1) program 0x4600c bits 15:0 = 0x8124
1427 2) program 0x46010 bit 0 = 1
1428 3) program 0x46034 bit 24 = 1
1429 4) program 0x64000 bit 14 = 1
1431 temp = I915_READ(0x4600c);
1433 I915_WRITE(0x4600c, temp | 0x8124);
1435 temp = I915_READ(0x46010);
1436 I915_WRITE(0x46010, temp | 1);
1438 temp = I915_READ(0x46034);
1439 I915_WRITE(0x46034, temp | (1 << 24));
1441 dpa_ctl |= DP_PLL_FREQ_270MHZ;
1443 I915_WRITE(DP_A, dpa_ctl);
1448 static void igdng_crtc_dpms(struct drm_crtc *crtc, int mode)
1450 struct drm_device *dev = crtc->dev;
1451 struct drm_i915_private *dev_priv = dev->dev_private;
1452 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1453 int pipe = intel_crtc->pipe;
1454 int plane = intel_crtc->plane;
1455 int pch_dpll_reg = (pipe == 0) ? PCH_DPLL_A : PCH_DPLL_B;
1456 int pipeconf_reg = (pipe == 0) ? PIPEACONF : PIPEBCONF;
1457 int dspcntr_reg = (plane == 0) ? DSPACNTR : DSPBCNTR;
1458 int dspbase_reg = (plane == 0) ? DSPAADDR : DSPBADDR;
1459 int fdi_tx_reg = (pipe == 0) ? FDI_TXA_CTL : FDI_TXB_CTL;
1460 int fdi_rx_reg = (pipe == 0) ? FDI_RXA_CTL : FDI_RXB_CTL;
1461 int fdi_rx_iir_reg = (pipe == 0) ? FDI_RXA_IIR : FDI_RXB_IIR;
1462 int fdi_rx_imr_reg = (pipe == 0) ? FDI_RXA_IMR : FDI_RXB_IMR;
1463 int transconf_reg = (pipe == 0) ? TRANSACONF : TRANSBCONF;
1464 int pf_ctl_reg = (pipe == 0) ? PFA_CTL_1 : PFB_CTL_1;
1465 int pf_win_size = (pipe == 0) ? PFA_WIN_SZ : PFB_WIN_SZ;
1466 int pf_win_pos = (pipe == 0) ? PFA_WIN_POS : PFB_WIN_POS;
1467 int cpu_htot_reg = (pipe == 0) ? HTOTAL_A : HTOTAL_B;
1468 int cpu_hblank_reg = (pipe == 0) ? HBLANK_A : HBLANK_B;
1469 int cpu_hsync_reg = (pipe == 0) ? HSYNC_A : HSYNC_B;
1470 int cpu_vtot_reg = (pipe == 0) ? VTOTAL_A : VTOTAL_B;
1471 int cpu_vblank_reg = (pipe == 0) ? VBLANK_A : VBLANK_B;
1472 int cpu_vsync_reg = (pipe == 0) ? VSYNC_A : VSYNC_B;
1473 int trans_htot_reg = (pipe == 0) ? TRANS_HTOTAL_A : TRANS_HTOTAL_B;
1474 int trans_hblank_reg = (pipe == 0) ? TRANS_HBLANK_A : TRANS_HBLANK_B;
1475 int trans_hsync_reg = (pipe == 0) ? TRANS_HSYNC_A : TRANS_HSYNC_B;
1476 int trans_vtot_reg = (pipe == 0) ? TRANS_VTOTAL_A : TRANS_VTOTAL_B;
1477 int trans_vblank_reg = (pipe == 0) ? TRANS_VBLANK_A : TRANS_VBLANK_B;
1478 int trans_vsync_reg = (pipe == 0) ? TRANS_VSYNC_A : TRANS_VSYNC_B;
1480 int tries = 5, j, n;
1482 /* XXX: When our outputs are all unaware of DPMS modes other than off
1483 * and on, we should map those modes to DRM_MODE_DPMS_OFF in the CRTC.
1486 case DRM_MODE_DPMS_ON:
1487 case DRM_MODE_DPMS_STANDBY:
1488 case DRM_MODE_DPMS_SUSPEND:
1489 DRM_DEBUG_KMS("crtc %d dpms on\n", pipe);
1491 /* enable eDP PLL */
1492 igdng_enable_pll_edp(crtc);
1494 /* enable PCH DPLL */
1495 temp = I915_READ(pch_dpll_reg);
1496 if ((temp & DPLL_VCO_ENABLE) == 0) {
1497 I915_WRITE(pch_dpll_reg, temp | DPLL_VCO_ENABLE);
1498 I915_READ(pch_dpll_reg);
1501 /* enable PCH FDI RX PLL, wait warmup plus DMI latency */
1502 temp = I915_READ(fdi_rx_reg);
1503 I915_WRITE(fdi_rx_reg, temp | FDI_RX_PLL_ENABLE |
1505 FDI_DP_PORT_WIDTH_X4); /* default 4 lanes */
1506 I915_READ(fdi_rx_reg);
1509 /* Enable CPU FDI TX PLL, always on for IGDNG */
1510 temp = I915_READ(fdi_tx_reg);
1511 if ((temp & FDI_TX_PLL_ENABLE) == 0) {
1512 I915_WRITE(fdi_tx_reg, temp | FDI_TX_PLL_ENABLE);
1513 I915_READ(fdi_tx_reg);
1518 /* Enable panel fitting for LVDS */
1519 if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
1520 temp = I915_READ(pf_ctl_reg);
1521 I915_WRITE(pf_ctl_reg, temp | PF_ENABLE | PF_FILTER_MED_3x3);
1523 /* currently full aspect */
1524 I915_WRITE(pf_win_pos, 0);
1526 I915_WRITE(pf_win_size,
1527 (dev_priv->panel_fixed_mode->hdisplay << 16) |
1528 (dev_priv->panel_fixed_mode->vdisplay));
1531 /* Enable CPU pipe */
1532 temp = I915_READ(pipeconf_reg);
1533 if ((temp & PIPEACONF_ENABLE) == 0) {
1534 I915_WRITE(pipeconf_reg, temp | PIPEACONF_ENABLE);
1535 I915_READ(pipeconf_reg);
1539 /* configure and enable CPU plane */
1540 temp = I915_READ(dspcntr_reg);
1541 if ((temp & DISPLAY_PLANE_ENABLE) == 0) {
1542 I915_WRITE(dspcntr_reg, temp | DISPLAY_PLANE_ENABLE);
1543 /* Flush the plane changes */
1544 I915_WRITE(dspbase_reg, I915_READ(dspbase_reg));
1548 /* enable CPU FDI TX and PCH FDI RX */
1549 temp = I915_READ(fdi_tx_reg);
1550 temp |= FDI_TX_ENABLE;
1551 temp |= FDI_DP_PORT_WIDTH_X4; /* default */
1552 temp &= ~FDI_LINK_TRAIN_NONE;
1553 temp |= FDI_LINK_TRAIN_PATTERN_1;
1554 I915_WRITE(fdi_tx_reg, temp);
1555 I915_READ(fdi_tx_reg);
1557 temp = I915_READ(fdi_rx_reg);
1558 temp &= ~FDI_LINK_TRAIN_NONE;
1559 temp |= FDI_LINK_TRAIN_PATTERN_1;
1560 I915_WRITE(fdi_rx_reg, temp | FDI_RX_ENABLE);
1561 I915_READ(fdi_rx_reg);
1566 /* umask FDI RX Interrupt symbol_lock and bit_lock bit
1568 temp = I915_READ(fdi_rx_imr_reg);
1569 temp &= ~FDI_RX_SYMBOL_LOCK;
1570 temp &= ~FDI_RX_BIT_LOCK;
1571 I915_WRITE(fdi_rx_imr_reg, temp);
1572 I915_READ(fdi_rx_imr_reg);
1575 temp = I915_READ(fdi_rx_iir_reg);
1576 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
1578 if ((temp & FDI_RX_BIT_LOCK) == 0) {
1579 for (j = 0; j < tries; j++) {
1580 temp = I915_READ(fdi_rx_iir_reg);
1581 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n",
1583 if (temp & FDI_RX_BIT_LOCK)
1588 I915_WRITE(fdi_rx_iir_reg,
1589 temp | FDI_RX_BIT_LOCK);
1591 DRM_DEBUG_KMS("train 1 fail\n");
1593 I915_WRITE(fdi_rx_iir_reg,
1594 temp | FDI_RX_BIT_LOCK);
1595 DRM_DEBUG_KMS("train 1 ok 2!\n");
1597 temp = I915_READ(fdi_tx_reg);
1598 temp &= ~FDI_LINK_TRAIN_NONE;
1599 temp |= FDI_LINK_TRAIN_PATTERN_2;
1600 I915_WRITE(fdi_tx_reg, temp);
1602 temp = I915_READ(fdi_rx_reg);
1603 temp &= ~FDI_LINK_TRAIN_NONE;
1604 temp |= FDI_LINK_TRAIN_PATTERN_2;
1605 I915_WRITE(fdi_rx_reg, temp);
1609 temp = I915_READ(fdi_rx_iir_reg);
1610 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
1612 if ((temp & FDI_RX_SYMBOL_LOCK) == 0) {
1613 for (j = 0; j < tries; j++) {
1614 temp = I915_READ(fdi_rx_iir_reg);
1615 DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n",
1617 if (temp & FDI_RX_SYMBOL_LOCK)
1622 I915_WRITE(fdi_rx_iir_reg,
1623 temp | FDI_RX_SYMBOL_LOCK);
1624 DRM_DEBUG_KMS("train 2 ok 1!\n");
1626 DRM_DEBUG_KMS("train 2 fail\n");
1628 I915_WRITE(fdi_rx_iir_reg,
1629 temp | FDI_RX_SYMBOL_LOCK);
1630 DRM_DEBUG_KMS("train 2 ok 2!\n");
1632 DRM_DEBUG_KMS("train done\n");
1634 /* set transcoder timing */
1635 I915_WRITE(trans_htot_reg, I915_READ(cpu_htot_reg));
1636 I915_WRITE(trans_hblank_reg, I915_READ(cpu_hblank_reg));
1637 I915_WRITE(trans_hsync_reg, I915_READ(cpu_hsync_reg));
1639 I915_WRITE(trans_vtot_reg, I915_READ(cpu_vtot_reg));
1640 I915_WRITE(trans_vblank_reg, I915_READ(cpu_vblank_reg));
1641 I915_WRITE(trans_vsync_reg, I915_READ(cpu_vsync_reg));
1643 /* enable PCH transcoder */
1644 temp = I915_READ(transconf_reg);
1645 I915_WRITE(transconf_reg, temp | TRANS_ENABLE);
1646 I915_READ(transconf_reg);
1648 while ((I915_READ(transconf_reg) & TRANS_STATE_ENABLE) == 0)
1653 temp = I915_READ(fdi_tx_reg);
1654 temp &= ~FDI_LINK_TRAIN_NONE;
1655 I915_WRITE(fdi_tx_reg, temp | FDI_LINK_TRAIN_NONE |
1656 FDI_TX_ENHANCE_FRAME_ENABLE);
1657 I915_READ(fdi_tx_reg);
1659 temp = I915_READ(fdi_rx_reg);
1660 temp &= ~FDI_LINK_TRAIN_NONE;
1661 I915_WRITE(fdi_rx_reg, temp | FDI_LINK_TRAIN_NONE |
1662 FDI_RX_ENHANCE_FRAME_ENABLE);
1663 I915_READ(fdi_rx_reg);
1665 /* wait one idle pattern time */
1670 intel_crtc_load_lut(crtc);
1673 case DRM_MODE_DPMS_OFF:
1674 DRM_DEBUG_KMS("crtc %d dpms off\n", pipe);
1676 i915_disable_vga(dev);
1678 /* Disable display plane */
1679 temp = I915_READ(dspcntr_reg);
1680 if ((temp & DISPLAY_PLANE_ENABLE) != 0) {
1681 I915_WRITE(dspcntr_reg, temp & ~DISPLAY_PLANE_ENABLE);
1682 /* Flush the plane changes */
1683 I915_WRITE(dspbase_reg, I915_READ(dspbase_reg));
1684 I915_READ(dspbase_reg);
1687 /* disable cpu pipe, disable after all planes disabled */
1688 temp = I915_READ(pipeconf_reg);
1689 if ((temp & PIPEACONF_ENABLE) != 0) {
1690 I915_WRITE(pipeconf_reg, temp & ~PIPEACONF_ENABLE);
1691 I915_READ(pipeconf_reg);
1693 /* wait for cpu pipe off, pipe state */
1694 while ((I915_READ(pipeconf_reg) & I965_PIPECONF_ACTIVE) != 0) {
1700 DRM_DEBUG_KMS("pipe %d off delay\n",
1706 DRM_DEBUG_KMS("crtc %d is disabled\n", pipe);
1709 igdng_disable_pll_edp(crtc);
1712 /* disable CPU FDI tx and PCH FDI rx */
1713 temp = I915_READ(fdi_tx_reg);
1714 I915_WRITE(fdi_tx_reg, temp & ~FDI_TX_ENABLE);
1715 I915_READ(fdi_tx_reg);
1717 temp = I915_READ(fdi_rx_reg);
1718 I915_WRITE(fdi_rx_reg, temp & ~FDI_RX_ENABLE);
1719 I915_READ(fdi_rx_reg);
1723 /* still set train pattern 1 */
1724 temp = I915_READ(fdi_tx_reg);
1725 temp &= ~FDI_LINK_TRAIN_NONE;
1726 temp |= FDI_LINK_TRAIN_PATTERN_1;
1727 I915_WRITE(fdi_tx_reg, temp);
1729 temp = I915_READ(fdi_rx_reg);
1730 temp &= ~FDI_LINK_TRAIN_NONE;
1731 temp |= FDI_LINK_TRAIN_PATTERN_1;
1732 I915_WRITE(fdi_rx_reg, temp);
1736 /* disable PCH transcoder */
1737 temp = I915_READ(transconf_reg);
1738 if ((temp & TRANS_ENABLE) != 0) {
1739 I915_WRITE(transconf_reg, temp & ~TRANS_ENABLE);
1740 I915_READ(transconf_reg);
1742 /* wait for PCH transcoder off, transcoder state */
1743 while ((I915_READ(transconf_reg) & TRANS_STATE_ENABLE) != 0) {
1749 DRM_DEBUG_KMS("transcoder %d off "
1756 /* disable PCH DPLL */
1757 temp = I915_READ(pch_dpll_reg);
1758 if ((temp & DPLL_VCO_ENABLE) != 0) {
1759 I915_WRITE(pch_dpll_reg, temp & ~DPLL_VCO_ENABLE);
1760 I915_READ(pch_dpll_reg);
1763 temp = I915_READ(fdi_rx_reg);
1764 if ((temp & FDI_RX_PLL_ENABLE) != 0) {
1765 temp &= ~FDI_SEL_PCDCLK;
1766 temp &= ~FDI_RX_PLL_ENABLE;
1767 I915_WRITE(fdi_rx_reg, temp);
1768 I915_READ(fdi_rx_reg);
1771 /* Disable CPU FDI TX PLL */
1772 temp = I915_READ(fdi_tx_reg);
1773 if ((temp & FDI_TX_PLL_ENABLE) != 0) {
1774 I915_WRITE(fdi_tx_reg, temp & ~FDI_TX_PLL_ENABLE);
1775 I915_READ(fdi_tx_reg);
1780 temp = I915_READ(pf_ctl_reg);
1781 if ((temp & PF_ENABLE) != 0) {
1782 I915_WRITE(pf_ctl_reg, temp & ~PF_ENABLE);
1783 I915_READ(pf_ctl_reg);
1785 I915_WRITE(pf_win_size, 0);
1787 /* Wait for the clocks to turn off. */
1793 static void intel_crtc_dpms_overlay(struct intel_crtc *intel_crtc, bool enable)
1795 struct intel_overlay *overlay;
1798 if (!enable && intel_crtc->overlay) {
1799 overlay = intel_crtc->overlay;
1800 mutex_lock(&overlay->dev->struct_mutex);
1802 ret = intel_overlay_switch_off(overlay);
1806 ret = intel_overlay_recover_from_interrupt(overlay, 0);
1808 /* overlay doesn't react anymore. Usually
1809 * results in a black screen and an unkillable
1812 overlay->hw_wedged = HW_WEDGED;
1816 mutex_unlock(&overlay->dev->struct_mutex);
1818 /* Let userspace switch the overlay on again. In most cases userspace
1819 * has to recompute where to put it anyway. */
1824 static void i9xx_crtc_dpms(struct drm_crtc *crtc, int mode)
1826 struct drm_device *dev = crtc->dev;
1827 struct drm_i915_private *dev_priv = dev->dev_private;
1828 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1829 int pipe = intel_crtc->pipe;
1830 int plane = intel_crtc->plane;
1831 int dpll_reg = (pipe == 0) ? DPLL_A : DPLL_B;
1832 int dspcntr_reg = (plane == 0) ? DSPACNTR : DSPBCNTR;
1833 int dspbase_reg = (plane == 0) ? DSPAADDR : DSPBADDR;
1834 int pipeconf_reg = (pipe == 0) ? PIPEACONF : PIPEBCONF;
1837 /* XXX: When our outputs are all unaware of DPMS modes other than off
1838 * and on, we should map those modes to DRM_MODE_DPMS_OFF in the CRTC.
1841 case DRM_MODE_DPMS_ON:
1842 case DRM_MODE_DPMS_STANDBY:
1843 case DRM_MODE_DPMS_SUSPEND:
1844 intel_update_watermarks(dev);
1846 /* Enable the DPLL */
1847 temp = I915_READ(dpll_reg);
1848 if ((temp & DPLL_VCO_ENABLE) == 0) {
1849 I915_WRITE(dpll_reg, temp);
1850 I915_READ(dpll_reg);
1851 /* Wait for the clocks to stabilize. */
1853 I915_WRITE(dpll_reg, temp | DPLL_VCO_ENABLE);
1854 I915_READ(dpll_reg);
1855 /* Wait for the clocks to stabilize. */
1857 I915_WRITE(dpll_reg, temp | DPLL_VCO_ENABLE);
1858 I915_READ(dpll_reg);
1859 /* Wait for the clocks to stabilize. */
1863 /* Enable the pipe */
1864 temp = I915_READ(pipeconf_reg);
1865 if ((temp & PIPEACONF_ENABLE) == 0)
1866 I915_WRITE(pipeconf_reg, temp | PIPEACONF_ENABLE);
1868 /* Enable the plane */
1869 temp = I915_READ(dspcntr_reg);
1870 if ((temp & DISPLAY_PLANE_ENABLE) == 0) {
1871 I915_WRITE(dspcntr_reg, temp | DISPLAY_PLANE_ENABLE);
1872 /* Flush the plane changes */
1873 I915_WRITE(dspbase_reg, I915_READ(dspbase_reg));
1876 intel_crtc_load_lut(crtc);
1878 if ((IS_I965G(dev) || plane == 0))
1879 intel_update_fbc(crtc, &crtc->mode);
1881 /* Give the overlay scaler a chance to enable if it's on this pipe */
1882 intel_crtc_dpms_overlay(intel_crtc, true);
1884 case DRM_MODE_DPMS_OFF:
1885 intel_update_watermarks(dev);
1887 /* Give the overlay scaler a chance to disable if it's on this pipe */
1888 intel_crtc_dpms_overlay(intel_crtc, false);
1890 if (dev_priv->cfb_plane == plane &&
1891 dev_priv->display.disable_fbc)
1892 dev_priv->display.disable_fbc(dev);
1894 /* Disable the VGA plane that we never use */
1895 i915_disable_vga(dev);
1897 /* Disable display plane */
1898 temp = I915_READ(dspcntr_reg);
1899 if ((temp & DISPLAY_PLANE_ENABLE) != 0) {
1900 I915_WRITE(dspcntr_reg, temp & ~DISPLAY_PLANE_ENABLE);
1901 /* Flush the plane changes */
1902 I915_WRITE(dspbase_reg, I915_READ(dspbase_reg));
1903 I915_READ(dspbase_reg);
1906 if (!IS_I9XX(dev)) {
1907 /* Wait for vblank for the disable to take effect */
1908 intel_wait_for_vblank(dev);
1911 /* Next, disable display pipes */
1912 temp = I915_READ(pipeconf_reg);
1913 if ((temp & PIPEACONF_ENABLE) != 0) {
1914 I915_WRITE(pipeconf_reg, temp & ~PIPEACONF_ENABLE);
1915 I915_READ(pipeconf_reg);
1918 /* Wait for vblank for the disable to take effect. */
1919 intel_wait_for_vblank(dev);
1921 temp = I915_READ(dpll_reg);
1922 if ((temp & DPLL_VCO_ENABLE) != 0) {
1923 I915_WRITE(dpll_reg, temp & ~DPLL_VCO_ENABLE);
1924 I915_READ(dpll_reg);
1927 /* Wait for the clocks to turn off. */
1934 * Sets the power management mode of the pipe and plane.
1936 * This code should probably grow support for turning the cursor off and back
1937 * on appropriately at the same time as we're turning the pipe off/on.
1939 static void intel_crtc_dpms(struct drm_crtc *crtc, int mode)
1941 struct drm_device *dev = crtc->dev;
1942 struct drm_i915_private *dev_priv = dev->dev_private;
1943 struct drm_i915_master_private *master_priv;
1944 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
1945 int pipe = intel_crtc->pipe;
1948 dev_priv->display.dpms(crtc, mode);
1950 intel_crtc->dpms_mode = mode;
1952 if (!dev->primary->master)
1955 master_priv = dev->primary->master->driver_priv;
1956 if (!master_priv->sarea_priv)
1959 enabled = crtc->enabled && mode != DRM_MODE_DPMS_OFF;
1963 master_priv->sarea_priv->pipeA_w = enabled ? crtc->mode.hdisplay : 0;
1964 master_priv->sarea_priv->pipeA_h = enabled ? crtc->mode.vdisplay : 0;
1967 master_priv->sarea_priv->pipeB_w = enabled ? crtc->mode.hdisplay : 0;
1968 master_priv->sarea_priv->pipeB_h = enabled ? crtc->mode.vdisplay : 0;
1971 DRM_ERROR("Can't update pipe %d in SAREA\n", pipe);
1976 static void intel_crtc_prepare (struct drm_crtc *crtc)
1978 struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
1979 crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF);
1982 static void intel_crtc_commit (struct drm_crtc *crtc)
1984 struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
1985 crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON);
1988 void intel_encoder_prepare (struct drm_encoder *encoder)
1990 struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
1991 /* lvds has its own version of prepare see intel_lvds_prepare */
1992 encoder_funcs->dpms(encoder, DRM_MODE_DPMS_OFF);
1995 void intel_encoder_commit (struct drm_encoder *encoder)
1997 struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
1998 /* lvds has its own version of commit see intel_lvds_commit */
1999 encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON);
2002 static bool intel_crtc_mode_fixup(struct drm_crtc *crtc,
2003 struct drm_display_mode *mode,
2004 struct drm_display_mode *adjusted_mode)
2006 struct drm_device *dev = crtc->dev;
2007 if (IS_IGDNG(dev)) {
2008 /* FDI link clock is fixed at 2.7G */
2009 if (mode->clock * 3 > 27000 * 4)
2010 return MODE_CLOCK_HIGH;
2015 static int i945_get_display_clock_speed(struct drm_device *dev)
2020 static int i915_get_display_clock_speed(struct drm_device *dev)
2025 static int i9xx_misc_get_display_clock_speed(struct drm_device *dev)
2030 static int i915gm_get_display_clock_speed(struct drm_device *dev)
2034 pci_read_config_word(dev->pdev, GCFGC, &gcfgc);
2036 if (gcfgc & GC_LOW_FREQUENCY_ENABLE)
2039 switch (gcfgc & GC_DISPLAY_CLOCK_MASK) {
2040 case GC_DISPLAY_CLOCK_333_MHZ:
2043 case GC_DISPLAY_CLOCK_190_200_MHZ:
2049 static int i865_get_display_clock_speed(struct drm_device *dev)
2054 static int i855_get_display_clock_speed(struct drm_device *dev)
2057 /* Assume that the hardware is in the high speed state. This
2058 * should be the default.
2060 switch (hpllcc & GC_CLOCK_CONTROL_MASK) {
2061 case GC_CLOCK_133_200:
2062 case GC_CLOCK_100_200:
2064 case GC_CLOCK_166_250:
2066 case GC_CLOCK_100_133:
2070 /* Shouldn't happen */
2074 static int i830_get_display_clock_speed(struct drm_device *dev)
2080 * Return the pipe currently connected to the panel fitter,
2081 * or -1 if the panel fitter is not present or not in use
2083 int intel_panel_fitter_pipe (struct drm_device *dev)
2085 struct drm_i915_private *dev_priv = dev->dev_private;
2088 /* i830 doesn't have a panel fitter */
2092 pfit_control = I915_READ(PFIT_CONTROL);
2094 /* See if the panel fitter is in use */
2095 if ((pfit_control & PFIT_ENABLE) == 0)
2098 /* 965 can place panel fitter on either pipe */
2100 return (pfit_control >> 29) & 0x3;
2102 /* older chips can only use pipe 1 */
2115 fdi_reduce_ratio(u32 *num, u32 *den)
2117 while (*num > 0xffffff || *den > 0xffffff) {
2123 #define DATA_N 0x800000
2124 #define LINK_N 0x80000
2127 igdng_compute_m_n(int bits_per_pixel, int nlanes,
2128 int pixel_clock, int link_clock,
2129 struct fdi_m_n *m_n)
2133 m_n->tu = 64; /* default size */
2135 temp = (u64) DATA_N * pixel_clock;
2136 temp = div_u64(temp, link_clock);
2137 m_n->gmch_m = div_u64(temp * bits_per_pixel, nlanes);
2138 m_n->gmch_m >>= 3; /* convert to bytes_per_pixel */
2139 m_n->gmch_n = DATA_N;
2140 fdi_reduce_ratio(&m_n->gmch_m, &m_n->gmch_n);
2142 temp = (u64) LINK_N * pixel_clock;
2143 m_n->link_m = div_u64(temp, link_clock);
2144 m_n->link_n = LINK_N;
2145 fdi_reduce_ratio(&m_n->link_m, &m_n->link_n);
2149 struct intel_watermark_params {
2150 unsigned long fifo_size;
2151 unsigned long max_wm;
2152 unsigned long default_wm;
2153 unsigned long guard_size;
2154 unsigned long cacheline_size;
2157 /* IGD has different values for various configs */
2158 static struct intel_watermark_params igd_display_wm = {
2165 static struct intel_watermark_params igd_display_hplloff_wm = {
2172 static struct intel_watermark_params igd_cursor_wm = {
2176 IGD_CURSOR_GUARD_WM,
2179 static struct intel_watermark_params igd_cursor_hplloff_wm = {
2183 IGD_CURSOR_GUARD_WM,
2186 static struct intel_watermark_params g4x_wm_info = {
2193 static struct intel_watermark_params i945_wm_info = {
2200 static struct intel_watermark_params i915_wm_info = {
2207 static struct intel_watermark_params i855_wm_info = {
2214 static struct intel_watermark_params i830_wm_info = {
2223 * intel_calculate_wm - calculate watermark level
2224 * @clock_in_khz: pixel clock
2225 * @wm: chip FIFO params
2226 * @pixel_size: display pixel size
2227 * @latency_ns: memory latency for the platform
2229 * Calculate the watermark level (the level at which the display plane will
2230 * start fetching from memory again). Each chip has a different display
2231 * FIFO size and allocation, so the caller needs to figure that out and pass
2232 * in the correct intel_watermark_params structure.
2234 * As the pixel clock runs, the FIFO will be drained at a rate that depends
2235 * on the pixel size. When it reaches the watermark level, it'll start
2236 * fetching FIFO line sized based chunks from memory until the FIFO fills
2237 * past the watermark point. If the FIFO drains completely, a FIFO underrun
2238 * will occur, and a display engine hang could result.
2240 static unsigned long intel_calculate_wm(unsigned long clock_in_khz,
2241 struct intel_watermark_params *wm,
2243 unsigned long latency_ns)
2245 long entries_required, wm_size;
2248 * Note: we need to make sure we don't overflow for various clock &
2250 * clocks go from a few thousand to several hundred thousand.
2251 * latency is usually a few thousand
2253 entries_required = ((clock_in_khz / 1000) * pixel_size * latency_ns) /
2255 entries_required /= wm->cacheline_size;
2257 DRM_DEBUG_KMS("FIFO entries required for mode: %d\n", entries_required);
2259 wm_size = wm->fifo_size - (entries_required + wm->guard_size);
2261 DRM_DEBUG_KMS("FIFO watermark level: %d\n", wm_size);
2263 /* Don't promote wm_size to unsigned... */
2264 if (wm_size > (long)wm->max_wm)
2265 wm_size = wm->max_wm;
2267 wm_size = wm->default_wm;
2271 struct cxsr_latency {
2273 unsigned long fsb_freq;
2274 unsigned long mem_freq;
2275 unsigned long display_sr;
2276 unsigned long display_hpll_disable;
2277 unsigned long cursor_sr;
2278 unsigned long cursor_hpll_disable;
2281 static struct cxsr_latency cxsr_latency_table[] = {
2282 {1, 800, 400, 3382, 33382, 3983, 33983}, /* DDR2-400 SC */
2283 {1, 800, 667, 3354, 33354, 3807, 33807}, /* DDR2-667 SC */
2284 {1, 800, 800, 3347, 33347, 3763, 33763}, /* DDR2-800 SC */
2286 {1, 667, 400, 3400, 33400, 4021, 34021}, /* DDR2-400 SC */
2287 {1, 667, 667, 3372, 33372, 3845, 33845}, /* DDR2-667 SC */
2288 {1, 667, 800, 3386, 33386, 3822, 33822}, /* DDR2-800 SC */
2290 {1, 400, 400, 3472, 33472, 4173, 34173}, /* DDR2-400 SC */
2291 {1, 400, 667, 3443, 33443, 3996, 33996}, /* DDR2-667 SC */
2292 {1, 400, 800, 3430, 33430, 3946, 33946}, /* DDR2-800 SC */
2294 {0, 800, 400, 3438, 33438, 4065, 34065}, /* DDR2-400 SC */
2295 {0, 800, 667, 3410, 33410, 3889, 33889}, /* DDR2-667 SC */
2296 {0, 800, 800, 3403, 33403, 3845, 33845}, /* DDR2-800 SC */
2298 {0, 667, 400, 3456, 33456, 4103, 34106}, /* DDR2-400 SC */
2299 {0, 667, 667, 3428, 33428, 3927, 33927}, /* DDR2-667 SC */
2300 {0, 667, 800, 3443, 33443, 3905, 33905}, /* DDR2-800 SC */
2302 {0, 400, 400, 3528, 33528, 4255, 34255}, /* DDR2-400 SC */
2303 {0, 400, 667, 3500, 33500, 4079, 34079}, /* DDR2-667 SC */
2304 {0, 400, 800, 3487, 33487, 4029, 34029}, /* DDR2-800 SC */
2307 static struct cxsr_latency *intel_get_cxsr_latency(int is_desktop, int fsb,
2311 struct cxsr_latency *latency;
2313 if (fsb == 0 || mem == 0)
2316 for (i = 0; i < ARRAY_SIZE(cxsr_latency_table); i++) {
2317 latency = &cxsr_latency_table[i];
2318 if (is_desktop == latency->is_desktop &&
2319 fsb == latency->fsb_freq && mem == latency->mem_freq)
2323 DRM_DEBUG_KMS("Unknown FSB/MEM found, disable CxSR\n");
2328 static void igd_disable_cxsr(struct drm_device *dev)
2330 struct drm_i915_private *dev_priv = dev->dev_private;
2333 /* deactivate cxsr */
2334 reg = I915_READ(DSPFW3);
2335 reg &= ~(IGD_SELF_REFRESH_EN);
2336 I915_WRITE(DSPFW3, reg);
2337 DRM_INFO("Big FIFO is disabled\n");
2340 static void igd_enable_cxsr(struct drm_device *dev, unsigned long clock,
2343 struct drm_i915_private *dev_priv = dev->dev_private;
2346 struct cxsr_latency *latency;
2348 latency = intel_get_cxsr_latency(IS_IGDG(dev), dev_priv->fsb_freq,
2349 dev_priv->mem_freq);
2351 DRM_DEBUG_KMS("Unknown FSB/MEM found, disable CxSR\n");
2352 igd_disable_cxsr(dev);
2357 wm = intel_calculate_wm(clock, &igd_display_wm, pixel_size,
2358 latency->display_sr);
2359 reg = I915_READ(DSPFW1);
2362 I915_WRITE(DSPFW1, reg);
2363 DRM_DEBUG_KMS("DSPFW1 register is %x\n", reg);
2366 wm = intel_calculate_wm(clock, &igd_cursor_wm, pixel_size,
2367 latency->cursor_sr);
2368 reg = I915_READ(DSPFW3);
2369 reg &= ~(0x3f << 24);
2370 reg |= (wm & 0x3f) << 24;
2371 I915_WRITE(DSPFW3, reg);
2373 /* Display HPLL off SR */
2374 wm = intel_calculate_wm(clock, &igd_display_hplloff_wm,
2375 latency->display_hpll_disable, I915_FIFO_LINE_SIZE);
2376 reg = I915_READ(DSPFW3);
2379 I915_WRITE(DSPFW3, reg);
2381 /* cursor HPLL off SR */
2382 wm = intel_calculate_wm(clock, &igd_cursor_hplloff_wm, pixel_size,
2383 latency->cursor_hpll_disable);
2384 reg = I915_READ(DSPFW3);
2385 reg &= ~(0x3f << 16);
2386 reg |= (wm & 0x3f) << 16;
2387 I915_WRITE(DSPFW3, reg);
2388 DRM_DEBUG_KMS("DSPFW3 register is %x\n", reg);
2391 reg = I915_READ(DSPFW3);
2392 reg |= IGD_SELF_REFRESH_EN;
2393 I915_WRITE(DSPFW3, reg);
2395 DRM_INFO("Big FIFO is enabled\n");
2401 * Latency for FIFO fetches is dependent on several factors:
2402 * - memory configuration (speed, channels)
2404 * - current MCH state
2405 * It can be fairly high in some situations, so here we assume a fairly
2406 * pessimal value. It's a tradeoff between extra memory fetches (if we
2407 * set this value too high, the FIFO will fetch frequently to stay full)
2408 * and power consumption (set it too low to save power and we might see
2409 * FIFO underruns and display "flicker").
2411 * A value of 5us seems to be a good balance; safe for very low end
2412 * platforms but not overly aggressive on lower latency configs.
2414 const static int latency_ns = 5000;
2416 static int i9xx_get_fifo_size(struct drm_device *dev, int plane)
2418 struct drm_i915_private *dev_priv = dev->dev_private;
2419 uint32_t dsparb = I915_READ(DSPARB);
2423 size = dsparb & 0x7f;
2425 size = ((dsparb >> DSPARB_CSTART_SHIFT) & 0x7f) -
2428 DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb,
2429 plane ? "B" : "A", size);
2434 static int i85x_get_fifo_size(struct drm_device *dev, int plane)
2436 struct drm_i915_private *dev_priv = dev->dev_private;
2437 uint32_t dsparb = I915_READ(DSPARB);
2441 size = dsparb & 0x1ff;
2443 size = ((dsparb >> DSPARB_BEND_SHIFT) & 0x1ff) -
2445 size >>= 1; /* Convert to cachelines */
2447 DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb,
2448 plane ? "B" : "A", size);
2453 static int i845_get_fifo_size(struct drm_device *dev, int plane)
2455 struct drm_i915_private *dev_priv = dev->dev_private;
2456 uint32_t dsparb = I915_READ(DSPARB);
2459 size = dsparb & 0x7f;
2460 size >>= 2; /* Convert to cachelines */
2462 DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb,
2469 static int i830_get_fifo_size(struct drm_device *dev, int plane)
2471 struct drm_i915_private *dev_priv = dev->dev_private;
2472 uint32_t dsparb = I915_READ(DSPARB);
2475 size = dsparb & 0x7f;
2476 size >>= 1; /* Convert to cachelines */
2478 DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb,
2479 plane ? "B" : "A", size);
2484 static void g4x_update_wm(struct drm_device *dev, int planea_clock,
2485 int planeb_clock, int sr_hdisplay, int pixel_size)
2487 struct drm_i915_private *dev_priv = dev->dev_private;
2488 int total_size, cacheline_size;
2489 int planea_wm, planeb_wm, cursora_wm, cursorb_wm, cursor_sr;
2490 struct intel_watermark_params planea_params, planeb_params;
2491 unsigned long line_time_us;
2492 int sr_clock, sr_entries = 0, entries_required;
2494 /* Create copies of the base settings for each pipe */
2495 planea_params = planeb_params = g4x_wm_info;
2497 /* Grab a couple of global values before we overwrite them */
2498 total_size = planea_params.fifo_size;
2499 cacheline_size = planea_params.cacheline_size;
2502 * Note: we need to make sure we don't overflow for various clock &
2504 * clocks go from a few thousand to several hundred thousand.
2505 * latency is usually a few thousand
2507 entries_required = ((planea_clock / 1000) * pixel_size * latency_ns) /
2509 entries_required /= G4X_FIFO_LINE_SIZE;
2510 planea_wm = entries_required + planea_params.guard_size;
2512 entries_required = ((planeb_clock / 1000) * pixel_size * latency_ns) /
2514 entries_required /= G4X_FIFO_LINE_SIZE;
2515 planeb_wm = entries_required + planeb_params.guard_size;
2517 cursora_wm = cursorb_wm = 16;
2520 DRM_DEBUG("FIFO watermarks - A: %d, B: %d\n", planea_wm, planeb_wm);
2522 /* Calc sr entries for one plane configs */
2523 if (sr_hdisplay && (!planea_clock || !planeb_clock)) {
2524 /* self-refresh has much higher latency */
2525 const static int sr_latency_ns = 12000;
2527 sr_clock = planea_clock ? planea_clock : planeb_clock;
2528 line_time_us = ((sr_hdisplay * 1000) / sr_clock);
2530 /* Use ns/us then divide to preserve precision */
2531 sr_entries = (((sr_latency_ns / line_time_us) + 1) *
2532 pixel_size * sr_hdisplay) / 1000;
2533 sr_entries = roundup(sr_entries / cacheline_size, 1);
2534 DRM_DEBUG("self-refresh entries: %d\n", sr_entries);
2535 I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN);
2538 DRM_DEBUG("Setting FIFO watermarks - A: %d, B: %d, SR %d\n",
2539 planea_wm, planeb_wm, sr_entries);
2544 I915_WRITE(DSPFW1, (sr_entries << DSPFW_SR_SHIFT) |
2545 (cursorb_wm << DSPFW_CURSORB_SHIFT) |
2546 (planeb_wm << DSPFW_PLANEB_SHIFT) | planea_wm);
2547 I915_WRITE(DSPFW2, (I915_READ(DSPFW2) & DSPFW_CURSORA_MASK) |
2548 (cursora_wm << DSPFW_CURSORA_SHIFT));
2549 /* HPLL off in SR has some issues on G4x... disable it */
2550 I915_WRITE(DSPFW3, (I915_READ(DSPFW3) & ~DSPFW_HPLL_SR_EN) |
2551 (cursor_sr << DSPFW_CURSOR_SR_SHIFT));
2554 static void i965_update_wm(struct drm_device *dev, int planea_clock,
2555 int planeb_clock, int sr_hdisplay, int pixel_size)
2557 struct drm_i915_private *dev_priv = dev->dev_private;
2558 unsigned long line_time_us;
2559 int sr_clock, sr_entries, srwm = 1;
2561 /* Calc sr entries for one plane configs */
2562 if (sr_hdisplay && (!planea_clock || !planeb_clock)) {
2563 /* self-refresh has much higher latency */
2564 const static int sr_latency_ns = 12000;
2566 sr_clock = planea_clock ? planea_clock : planeb_clock;
2567 line_time_us = ((sr_hdisplay * 1000) / sr_clock);
2569 /* Use ns/us then divide to preserve precision */
2570 sr_entries = (((sr_latency_ns / line_time_us) + 1) *
2571 pixel_size * sr_hdisplay) / 1000;
2572 sr_entries = roundup(sr_entries / I915_FIFO_LINE_SIZE, 1);
2573 DRM_DEBUG("self-refresh entries: %d\n", sr_entries);
2574 srwm = I945_FIFO_SIZE - sr_entries;
2578 I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN);
2581 DRM_DEBUG_KMS("Setting FIFO watermarks - A: 8, B: 8, C: 8, SR %d\n",
2584 /* 965 has limitations... */
2585 I915_WRITE(DSPFW1, (srwm << DSPFW_SR_SHIFT) | (8 << 16) | (8 << 8) |
2587 I915_WRITE(DSPFW2, (8 << 8) | (8 << 0));
2590 static void i9xx_update_wm(struct drm_device *dev, int planea_clock,
2591 int planeb_clock, int sr_hdisplay, int pixel_size)
2593 struct drm_i915_private *dev_priv = dev->dev_private;
2596 int total_size, cacheline_size, cwm, srwm = 1;
2597 int planea_wm, planeb_wm;
2598 struct intel_watermark_params planea_params, planeb_params;
2599 unsigned long line_time_us;
2600 int sr_clock, sr_entries = 0;
2602 /* Create copies of the base settings for each pipe */
2603 if (IS_I965GM(dev) || IS_I945GM(dev))
2604 planea_params = planeb_params = i945_wm_info;
2605 else if (IS_I9XX(dev))
2606 planea_params = planeb_params = i915_wm_info;
2608 planea_params = planeb_params = i855_wm_info;
2610 /* Grab a couple of global values before we overwrite them */
2611 total_size = planea_params.fifo_size;
2612 cacheline_size = planea_params.cacheline_size;
2614 /* Update per-plane FIFO sizes */
2615 planea_params.fifo_size = dev_priv->display.get_fifo_size(dev, 0);
2616 planeb_params.fifo_size = dev_priv->display.get_fifo_size(dev, 1);
2618 planea_wm = intel_calculate_wm(planea_clock, &planea_params,
2619 pixel_size, latency_ns);
2620 planeb_wm = intel_calculate_wm(planeb_clock, &planeb_params,
2621 pixel_size, latency_ns);
2622 DRM_DEBUG_KMS("FIFO watermarks - A: %d, B: %d\n", planea_wm, planeb_wm);
2625 * Overlay gets an aggressive default since video jitter is bad.
2629 /* Calc sr entries for one plane configs */
2630 if (HAS_FW_BLC(dev) && sr_hdisplay &&
2631 (!planea_clock || !planeb_clock)) {
2632 /* self-refresh has much higher latency */
2633 const static int sr_latency_ns = 6000;
2635 sr_clock = planea_clock ? planea_clock : planeb_clock;
2636 line_time_us = ((sr_hdisplay * 1000) / sr_clock);
2638 /* Use ns/us then divide to preserve precision */
2639 sr_entries = (((sr_latency_ns / line_time_us) + 1) *
2640 pixel_size * sr_hdisplay) / 1000;
2641 sr_entries = roundup(sr_entries / cacheline_size, 1);
2642 DRM_DEBUG_KMS("self-refresh entries: %d\n", sr_entries);
2643 srwm = total_size - sr_entries;
2646 I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN | (srwm & 0x3f));
2649 DRM_DEBUG_KMS("Setting FIFO watermarks - A: %d, B: %d, C: %d, SR %d\n",
2650 planea_wm, planeb_wm, cwm, srwm);
2652 fwater_lo = ((planeb_wm & 0x3f) << 16) | (planea_wm & 0x3f);
2653 fwater_hi = (cwm & 0x1f);
2655 /* Set request length to 8 cachelines per fetch */
2656 fwater_lo = fwater_lo | (1 << 24) | (1 << 8);
2657 fwater_hi = fwater_hi | (1 << 8);
2659 I915_WRITE(FW_BLC, fwater_lo);
2660 I915_WRITE(FW_BLC2, fwater_hi);
2663 static void i830_update_wm(struct drm_device *dev, int planea_clock, int unused,
2664 int unused2, int pixel_size)
2666 struct drm_i915_private *dev_priv = dev->dev_private;
2667 uint32_t fwater_lo = I915_READ(FW_BLC) & ~0xfff;
2670 i830_wm_info.fifo_size = dev_priv->display.get_fifo_size(dev, 0);
2672 planea_wm = intel_calculate_wm(planea_clock, &i830_wm_info,
2673 pixel_size, latency_ns);
2674 fwater_lo |= (3<<8) | planea_wm;
2676 DRM_DEBUG_KMS("Setting FIFO watermarks - A: %d\n", planea_wm);
2678 I915_WRITE(FW_BLC, fwater_lo);
2682 * intel_update_watermarks - update FIFO watermark values based on current modes
2684 * Calculate watermark values for the various WM regs based on current mode
2685 * and plane configuration.
2687 * There are several cases to deal with here:
2688 * - normal (i.e. non-self-refresh)
2689 * - self-refresh (SR) mode
2690 * - lines are large relative to FIFO size (buffer can hold up to 2)
2691 * - lines are small relative to FIFO size (buffer can hold more than 2
2692 * lines), so need to account for TLB latency
2694 * The normal calculation is:
2695 * watermark = dotclock * bytes per pixel * latency
2696 * where latency is platform & configuration dependent (we assume pessimal
2699 * The SR calculation is:
2700 * watermark = (trunc(latency/line time)+1) * surface width *
2703 * line time = htotal / dotclock
2704 * and latency is assumed to be high, as above.
2706 * The final value programmed to the register should always be rounded up,
2707 * and include an extra 2 entries to account for clock crossings.
2709 * We don't use the sprite, so we can ignore that. And on Crestline we have
2710 * to set the non-SR watermarks to 8.
2712 static void intel_update_watermarks(struct drm_device *dev)
2714 struct drm_i915_private *dev_priv = dev->dev_private;
2715 struct drm_crtc *crtc;
2716 struct intel_crtc *intel_crtc;
2717 int sr_hdisplay = 0;
2718 unsigned long planea_clock = 0, planeb_clock = 0, sr_clock = 0;
2719 int enabled = 0, pixel_size = 0;
2721 if (!dev_priv->display.update_wm)
2724 /* Get the clock config from both planes */
2725 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
2726 intel_crtc = to_intel_crtc(crtc);
2727 if (crtc->enabled) {
2729 if (intel_crtc->plane == 0) {
2730 DRM_DEBUG_KMS("plane A (pipe %d) clock: %d\n",
2731 intel_crtc->pipe, crtc->mode.clock);
2732 planea_clock = crtc->mode.clock;
2734 DRM_DEBUG_KMS("plane B (pipe %d) clock: %d\n",
2735 intel_crtc->pipe, crtc->mode.clock);
2736 planeb_clock = crtc->mode.clock;
2738 sr_hdisplay = crtc->mode.hdisplay;
2739 sr_clock = crtc->mode.clock;
2741 pixel_size = crtc->fb->bits_per_pixel / 8;
2743 pixel_size = 4; /* by default */
2750 /* Single plane configs can enable self refresh */
2751 if (enabled == 1 && IS_IGD(dev))
2752 igd_enable_cxsr(dev, sr_clock, pixel_size);
2753 else if (IS_IGD(dev))
2754 igd_disable_cxsr(dev);
2756 dev_priv->display.update_wm(dev, planea_clock, planeb_clock,
2757 sr_hdisplay, pixel_size);
2760 static int intel_crtc_mode_set(struct drm_crtc *crtc,
2761 struct drm_display_mode *mode,
2762 struct drm_display_mode *adjusted_mode,
2764 struct drm_framebuffer *old_fb)
2766 struct drm_device *dev = crtc->dev;
2767 struct drm_i915_private *dev_priv = dev->dev_private;
2768 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
2769 int pipe = intel_crtc->pipe;
2770 int plane = intel_crtc->plane;
2771 int fp_reg = (pipe == 0) ? FPA0 : FPB0;
2772 int dpll_reg = (pipe == 0) ? DPLL_A : DPLL_B;
2773 int dpll_md_reg = (intel_crtc->pipe == 0) ? DPLL_A_MD : DPLL_B_MD;
2774 int dspcntr_reg = (plane == 0) ? DSPACNTR : DSPBCNTR;
2775 int pipeconf_reg = (pipe == 0) ? PIPEACONF : PIPEBCONF;
2776 int htot_reg = (pipe == 0) ? HTOTAL_A : HTOTAL_B;
2777 int hblank_reg = (pipe == 0) ? HBLANK_A : HBLANK_B;
2778 int hsync_reg = (pipe == 0) ? HSYNC_A : HSYNC_B;
2779 int vtot_reg = (pipe == 0) ? VTOTAL_A : VTOTAL_B;
2780 int vblank_reg = (pipe == 0) ? VBLANK_A : VBLANK_B;
2781 int vsync_reg = (pipe == 0) ? VSYNC_A : VSYNC_B;
2782 int dspsize_reg = (plane == 0) ? DSPASIZE : DSPBSIZE;
2783 int dsppos_reg = (plane == 0) ? DSPAPOS : DSPBPOS;
2784 int pipesrc_reg = (pipe == 0) ? PIPEASRC : PIPEBSRC;
2785 int refclk, num_outputs = 0;
2786 intel_clock_t clock, reduced_clock;
2787 u32 dpll = 0, fp = 0, fp2 = 0, dspcntr, pipeconf;
2788 bool ok, has_reduced_clock = false, is_sdvo = false, is_dvo = false;
2789 bool is_crt = false, is_lvds = false, is_tv = false, is_dp = false;
2790 bool is_edp = false;
2791 struct drm_mode_config *mode_config = &dev->mode_config;
2792 struct drm_connector *connector;
2793 const intel_limit_t *limit;
2795 struct fdi_m_n m_n = {0};
2796 int data_m1_reg = (pipe == 0) ? PIPEA_DATA_M1 : PIPEB_DATA_M1;
2797 int data_n1_reg = (pipe == 0) ? PIPEA_DATA_N1 : PIPEB_DATA_N1;
2798 int link_m1_reg = (pipe == 0) ? PIPEA_LINK_M1 : PIPEB_LINK_M1;
2799 int link_n1_reg = (pipe == 0) ? PIPEA_LINK_N1 : PIPEB_LINK_N1;
2800 int pch_fp_reg = (pipe == 0) ? PCH_FPA0 : PCH_FPB0;
2801 int pch_dpll_reg = (pipe == 0) ? PCH_DPLL_A : PCH_DPLL_B;
2802 int fdi_rx_reg = (pipe == 0) ? FDI_RXA_CTL : FDI_RXB_CTL;
2803 int lvds_reg = LVDS;
2805 int sdvo_pixel_multiply;
2808 drm_vblank_pre_modeset(dev, pipe);
2810 list_for_each_entry(connector, &mode_config->connector_list, head) {
2811 struct intel_output *intel_output = to_intel_output(connector);
2813 if (!connector->encoder || connector->encoder->crtc != crtc)
2816 switch (intel_output->type) {
2817 case INTEL_OUTPUT_LVDS:
2820 case INTEL_OUTPUT_SDVO:
2821 case INTEL_OUTPUT_HDMI:
2823 if (intel_output->needs_tv_clock)
2826 case INTEL_OUTPUT_DVO:
2829 case INTEL_OUTPUT_TVOUT:
2832 case INTEL_OUTPUT_ANALOG:
2835 case INTEL_OUTPUT_DISPLAYPORT:
2838 case INTEL_OUTPUT_EDP:
2846 if (is_lvds && dev_priv->lvds_use_ssc && num_outputs < 2) {
2847 refclk = dev_priv->lvds_ssc_freq * 1000;
2848 DRM_DEBUG_KMS("using SSC reference clock of %d MHz\n",
2850 } else if (IS_I9XX(dev)) {
2853 refclk = 120000; /* 120Mhz refclk */
2860 * Returns a set of divisors for the desired target clock with the given
2861 * refclk, or FALSE. The returned values represent the clock equation:
2862 * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
2864 limit = intel_limit(crtc);
2865 ok = limit->find_pll(limit, crtc, adjusted_mode->clock, refclk, &clock);
2867 DRM_ERROR("Couldn't find PLL settings for mode!\n");
2868 drm_vblank_post_modeset(dev, pipe);
2872 if (limit->find_reduced_pll && dev_priv->lvds_downclock_avail) {
2873 memcpy(&reduced_clock, &clock, sizeof(intel_clock_t));
2874 has_reduced_clock = limit->find_reduced_pll(limit, crtc,
2875 (adjusted_mode->clock*3/4),
2880 /* SDVO TV has fixed PLL values depend on its clock range,
2881 this mirrors vbios setting. */
2882 if (is_sdvo && is_tv) {
2883 if (adjusted_mode->clock >= 100000
2884 && adjusted_mode->clock < 140500) {
2890 } else if (adjusted_mode->clock >= 140500
2891 && adjusted_mode->clock <= 200000) {
2901 if (IS_IGDNG(dev)) {
2902 int lane, link_bw, bpp;
2903 /* eDP doesn't require FDI link, so just set DP M/N
2904 according to current link config */
2906 struct drm_connector *edp;
2907 target_clock = mode->clock;
2908 edp = intel_pipe_get_output(crtc);
2909 intel_edp_link_config(to_intel_output(edp),
2912 /* DP over FDI requires target mode clock
2913 instead of link clock */
2915 target_clock = mode->clock;
2917 target_clock = adjusted_mode->clock;
2922 /* determine panel color depth */
2923 temp = I915_READ(pipeconf_reg);
2925 switch (temp & PIPE_BPC_MASK) {
2939 DRM_ERROR("unknown pipe bpc value\n");
2943 igdng_compute_m_n(bpp, lane, target_clock,
2947 /* Ironlake: try to setup display ref clock before DPLL
2948 * enabling. This is only under driver's control after
2949 * PCH B stepping, previous chipset stepping should be
2950 * ignoring this setting.
2952 if (IS_IGDNG(dev)) {
2953 temp = I915_READ(PCH_DREF_CONTROL);
2954 /* Always enable nonspread source */
2955 temp &= ~DREF_NONSPREAD_SOURCE_MASK;
2956 temp |= DREF_NONSPREAD_SOURCE_ENABLE;
2957 I915_WRITE(PCH_DREF_CONTROL, temp);
2958 POSTING_READ(PCH_DREF_CONTROL);
2960 temp &= ~DREF_SSC_SOURCE_MASK;
2961 temp |= DREF_SSC_SOURCE_ENABLE;
2962 I915_WRITE(PCH_DREF_CONTROL, temp);
2963 POSTING_READ(PCH_DREF_CONTROL);
2968 if (dev_priv->lvds_use_ssc) {
2969 temp |= DREF_SSC1_ENABLE;
2970 I915_WRITE(PCH_DREF_CONTROL, temp);
2971 POSTING_READ(PCH_DREF_CONTROL);
2975 temp &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
2976 temp |= DREF_CPU_SOURCE_OUTPUT_DOWNSPREAD;
2977 I915_WRITE(PCH_DREF_CONTROL, temp);
2978 POSTING_READ(PCH_DREF_CONTROL);
2980 temp |= DREF_CPU_SOURCE_OUTPUT_NONSPREAD;
2981 I915_WRITE(PCH_DREF_CONTROL, temp);
2982 POSTING_READ(PCH_DREF_CONTROL);
2988 fp = (1 << clock.n) << 16 | clock.m1 << 8 | clock.m2;
2989 if (has_reduced_clock)
2990 fp2 = (1 << reduced_clock.n) << 16 |
2991 reduced_clock.m1 << 8 | reduced_clock.m2;
2993 fp = clock.n << 16 | clock.m1 << 8 | clock.m2;
2994 if (has_reduced_clock)
2995 fp2 = reduced_clock.n << 16 | reduced_clock.m1 << 8 |
3000 dpll = DPLL_VGA_MODE_DIS;
3004 dpll |= DPLLB_MODE_LVDS;
3006 dpll |= DPLLB_MODE_DAC_SERIAL;
3008 dpll |= DPLL_DVO_HIGH_SPEED;
3009 sdvo_pixel_multiply = adjusted_mode->clock / mode->clock;
3010 if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev))
3011 dpll |= (sdvo_pixel_multiply - 1) << SDVO_MULTIPLIER_SHIFT_HIRES;
3012 else if (IS_IGDNG(dev))
3013 dpll |= (sdvo_pixel_multiply - 1) << PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT;
3016 dpll |= DPLL_DVO_HIGH_SPEED;
3018 /* compute bitmask from p1 value */
3020 dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT_IGD;
3022 dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
3025 dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
3026 if (IS_G4X(dev) && has_reduced_clock)
3027 dpll |= (1 << (reduced_clock.p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
3031 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
3034 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
3037 dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
3040 dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
3043 if (IS_I965G(dev) && !IS_IGDNG(dev))
3044 dpll |= (6 << PLL_LOAD_PULSE_PHASE_SHIFT);
3047 dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
3050 dpll |= PLL_P1_DIVIDE_BY_TWO;
3052 dpll |= (clock.p1 - 2) << DPLL_FPA01_P1_POST_DIV_SHIFT;
3054 dpll |= PLL_P2_DIVIDE_BY_4;
3058 if (is_sdvo && is_tv)
3059 dpll |= PLL_REF_INPUT_TVCLKINBC;
3061 /* XXX: just matching BIOS for now */
3062 /* dpll |= PLL_REF_INPUT_TVCLKINBC; */
3064 else if (is_lvds && dev_priv->lvds_use_ssc && num_outputs < 2)
3065 dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
3067 dpll |= PLL_REF_INPUT_DREFCLK;
3069 /* setup pipeconf */
3070 pipeconf = I915_READ(pipeconf_reg);
3072 /* Set up the display plane register */
3073 dspcntr = DISPPLANE_GAMMA_ENABLE;
3075 /* IGDNG's plane is forced to pipe, bit 24 is to
3076 enable color space conversion */
3077 if (!IS_IGDNG(dev)) {
3079 dspcntr &= ~DISPPLANE_SEL_PIPE_MASK;
3081 dspcntr |= DISPPLANE_SEL_PIPE_B;
3084 if (pipe == 0 && !IS_I965G(dev)) {
3085 /* Enable pixel doubling when the dot clock is > 90% of the (display)
3088 * XXX: No double-wide on 915GM pipe B. Is that the only reason for the
3092 dev_priv->display.get_display_clock_speed(dev) * 9 / 10)
3093 pipeconf |= PIPEACONF_DOUBLE_WIDE;
3095 pipeconf &= ~PIPEACONF_DOUBLE_WIDE;
3098 dspcntr |= DISPLAY_PLANE_ENABLE;
3099 pipeconf |= PIPEACONF_ENABLE;
3100 dpll |= DPLL_VCO_ENABLE;
3103 /* Disable the panel fitter if it was on our pipe */
3104 if (!IS_IGDNG(dev) && intel_panel_fitter_pipe(dev) == pipe)
3105 I915_WRITE(PFIT_CONTROL, 0);
3107 DRM_DEBUG_KMS("Mode for pipe %c:\n", pipe == 0 ? 'A' : 'B');
3108 drm_mode_debug_printmodeline(mode);
3110 /* assign to IGDNG registers */
3111 if (IS_IGDNG(dev)) {
3112 fp_reg = pch_fp_reg;
3113 dpll_reg = pch_dpll_reg;
3117 igdng_disable_pll_edp(crtc);
3118 } else if ((dpll & DPLL_VCO_ENABLE)) {
3119 I915_WRITE(fp_reg, fp);
3120 I915_WRITE(dpll_reg, dpll & ~DPLL_VCO_ENABLE);
3121 I915_READ(dpll_reg);
3125 /* The LVDS pin pair needs to be on before the DPLLs are enabled.
3126 * This is an exception to the general rule that mode_set doesn't turn
3133 lvds_reg = PCH_LVDS;
3135 lvds = I915_READ(lvds_reg);
3136 lvds |= LVDS_PORT_EN | LVDS_A0A2_CLKA_POWER_UP | LVDS_PIPEB_SELECT;
3137 /* set the corresponsding LVDS_BORDER bit */
3138 lvds |= dev_priv->lvds_border_bits;
3139 /* Set the B0-B3 data pairs corresponding to whether we're going to
3140 * set the DPLLs for dual-channel mode or not.
3143 lvds |= LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP;
3145 lvds &= ~(LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP);
3147 /* It would be nice to set 24 vs 18-bit mode (LVDS_A3_POWER_UP)
3148 * appropriately here, but we need to look more thoroughly into how
3149 * panels behave in the two modes.
3152 I915_WRITE(lvds_reg, lvds);
3153 I915_READ(lvds_reg);
3156 intel_dp_set_m_n(crtc, mode, adjusted_mode);
3159 I915_WRITE(fp_reg, fp);
3160 I915_WRITE(dpll_reg, dpll);
3161 I915_READ(dpll_reg);
3162 /* Wait for the clocks to stabilize. */
3165 if (IS_I965G(dev) && !IS_IGDNG(dev)) {
3167 sdvo_pixel_multiply = adjusted_mode->clock / mode->clock;
3168 I915_WRITE(dpll_md_reg, (0 << DPLL_MD_UDI_DIVIDER_SHIFT) |
3169 ((sdvo_pixel_multiply - 1) << DPLL_MD_UDI_MULTIPLIER_SHIFT));
3171 I915_WRITE(dpll_md_reg, 0);
3173 /* write it again -- the BIOS does, after all */
3174 I915_WRITE(dpll_reg, dpll);
3176 I915_READ(dpll_reg);
3177 /* Wait for the clocks to stabilize. */
3181 if (is_lvds && has_reduced_clock && i915_powersave) {
3182 I915_WRITE(fp_reg + 4, fp2);
3183 intel_crtc->lowfreq_avail = true;
3184 if (HAS_PIPE_CXSR(dev)) {
3185 DRM_DEBUG_KMS("enabling CxSR downclocking\n");
3186 pipeconf |= PIPECONF_CXSR_DOWNCLOCK;
3189 I915_WRITE(fp_reg + 4, fp);
3190 intel_crtc->lowfreq_avail = false;
3191 if (HAS_PIPE_CXSR(dev)) {
3192 DRM_DEBUG_KMS("disabling CxSR downclocking\n");
3193 pipeconf &= ~PIPECONF_CXSR_DOWNCLOCK;
3197 I915_WRITE(htot_reg, (adjusted_mode->crtc_hdisplay - 1) |
3198 ((adjusted_mode->crtc_htotal - 1) << 16));
3199 I915_WRITE(hblank_reg, (adjusted_mode->crtc_hblank_start - 1) |
3200 ((adjusted_mode->crtc_hblank_end - 1) << 16));
3201 I915_WRITE(hsync_reg, (adjusted_mode->crtc_hsync_start - 1) |
3202 ((adjusted_mode->crtc_hsync_end - 1) << 16));
3203 I915_WRITE(vtot_reg, (adjusted_mode->crtc_vdisplay - 1) |
3204 ((adjusted_mode->crtc_vtotal - 1) << 16));
3205 I915_WRITE(vblank_reg, (adjusted_mode->crtc_vblank_start - 1) |
3206 ((adjusted_mode->crtc_vblank_end - 1) << 16));
3207 I915_WRITE(vsync_reg, (adjusted_mode->crtc_vsync_start - 1) |
3208 ((adjusted_mode->crtc_vsync_end - 1) << 16));
3209 /* pipesrc and dspsize control the size that is scaled from, which should
3210 * always be the user's requested size.
3212 if (!IS_IGDNG(dev)) {
3213 I915_WRITE(dspsize_reg, ((mode->vdisplay - 1) << 16) |
3214 (mode->hdisplay - 1));
3215 I915_WRITE(dsppos_reg, 0);
3217 I915_WRITE(pipesrc_reg, ((mode->hdisplay - 1) << 16) | (mode->vdisplay - 1));
3219 if (IS_IGDNG(dev)) {
3220 I915_WRITE(data_m1_reg, TU_SIZE(m_n.tu) | m_n.gmch_m);
3221 I915_WRITE(data_n1_reg, TU_SIZE(m_n.tu) | m_n.gmch_n);
3222 I915_WRITE(link_m1_reg, m_n.link_m);
3223 I915_WRITE(link_n1_reg, m_n.link_n);
3226 igdng_set_pll_edp(crtc, adjusted_mode->clock);
3228 /* enable FDI RX PLL too */
3229 temp = I915_READ(fdi_rx_reg);
3230 I915_WRITE(fdi_rx_reg, temp | FDI_RX_PLL_ENABLE);
3235 I915_WRITE(pipeconf_reg, pipeconf);
3236 I915_READ(pipeconf_reg);
3238 intel_wait_for_vblank(dev);
3240 if (IS_IGDNG(dev)) {
3241 /* enable address swizzle for tiling buffer */
3242 temp = I915_READ(DISP_ARB_CTL);
3243 I915_WRITE(DISP_ARB_CTL, temp | DISP_TILE_SURFACE_SWIZZLING);
3246 I915_WRITE(dspcntr_reg, dspcntr);
3248 /* Flush the plane changes */
3249 ret = intel_pipe_set_base(crtc, x, y, old_fb);
3251 if ((IS_I965G(dev) || plane == 0))
3252 intel_update_fbc(crtc, &crtc->mode);
3254 intel_update_watermarks(dev);
3256 drm_vblank_post_modeset(dev, pipe);
3261 /** Loads the palette/gamma unit for the CRTC with the prepared values */
3262 void intel_crtc_load_lut(struct drm_crtc *crtc)
3264 struct drm_device *dev = crtc->dev;
3265 struct drm_i915_private *dev_priv = dev->dev_private;
3266 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3267 int palreg = (intel_crtc->pipe == 0) ? PALETTE_A : PALETTE_B;
3270 /* The clocks have to be on to load the palette. */
3274 /* use legacy palette for IGDNG */
3276 palreg = (intel_crtc->pipe == 0) ? LGC_PALETTE_A :
3279 for (i = 0; i < 256; i++) {
3280 I915_WRITE(palreg + 4 * i,
3281 (intel_crtc->lut_r[i] << 16) |
3282 (intel_crtc->lut_g[i] << 8) |
3283 intel_crtc->lut_b[i]);
3287 static int intel_crtc_cursor_set(struct drm_crtc *crtc,
3288 struct drm_file *file_priv,
3290 uint32_t width, uint32_t height)
3292 struct drm_device *dev = crtc->dev;
3293 struct drm_i915_private *dev_priv = dev->dev_private;
3294 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3295 struct drm_gem_object *bo;
3296 struct drm_i915_gem_object *obj_priv;
3297 int pipe = intel_crtc->pipe;
3298 uint32_t control = (pipe == 0) ? CURACNTR : CURBCNTR;
3299 uint32_t base = (pipe == 0) ? CURABASE : CURBBASE;
3300 uint32_t temp = I915_READ(control);
3304 DRM_DEBUG_KMS("\n");
3306 /* if we want to turn off the cursor ignore width and height */
3308 DRM_DEBUG_KMS("cursor off\n");
3309 if (IS_MOBILE(dev) || IS_I9XX(dev)) {
3310 temp &= ~(CURSOR_MODE | MCURSOR_GAMMA_ENABLE);
3311 temp |= CURSOR_MODE_DISABLE;
3313 temp &= ~(CURSOR_ENABLE | CURSOR_GAMMA_ENABLE);
3317 mutex_lock(&dev->struct_mutex);
3321 /* Currently we only support 64x64 cursors */
3322 if (width != 64 || height != 64) {
3323 DRM_ERROR("we currently only support 64x64 cursors\n");
3327 bo = drm_gem_object_lookup(dev, file_priv, handle);
3331 obj_priv = bo->driver_private;
3333 if (bo->size < width * height * 4) {
3334 DRM_ERROR("buffer is to small\n");
3339 /* we only need to pin inside GTT if cursor is non-phy */
3340 mutex_lock(&dev->struct_mutex);
3341 if (!dev_priv->cursor_needs_physical) {
3342 ret = i915_gem_object_pin(bo, PAGE_SIZE);
3344 DRM_ERROR("failed to pin cursor bo\n");
3347 addr = obj_priv->gtt_offset;
3349 ret = i915_gem_attach_phys_object(dev, bo, (pipe == 0) ? I915_GEM_PHYS_CURSOR_0 : I915_GEM_PHYS_CURSOR_1);
3351 DRM_ERROR("failed to attach phys object\n");
3354 addr = obj_priv->phys_obj->handle->busaddr;
3358 I915_WRITE(CURSIZE, (height << 12) | width);
3360 /* Hooray for CUR*CNTR differences */
3361 if (IS_MOBILE(dev) || IS_I9XX(dev)) {
3362 temp &= ~(CURSOR_MODE | MCURSOR_PIPE_SELECT);
3363 temp |= CURSOR_MODE_64_ARGB_AX | MCURSOR_GAMMA_ENABLE;
3364 temp |= (pipe << 28); /* Connect to correct pipe */
3366 temp &= ~(CURSOR_FORMAT_MASK);
3367 temp |= CURSOR_ENABLE;
3368 temp |= CURSOR_FORMAT_ARGB | CURSOR_GAMMA_ENABLE;
3372 I915_WRITE(control, temp);
3373 I915_WRITE(base, addr);
3375 if (intel_crtc->cursor_bo) {
3376 if (dev_priv->cursor_needs_physical) {
3377 if (intel_crtc->cursor_bo != bo)
3378 i915_gem_detach_phys_object(dev, intel_crtc->cursor_bo);
3380 i915_gem_object_unpin(intel_crtc->cursor_bo);
3381 drm_gem_object_unreference(intel_crtc->cursor_bo);
3384 mutex_unlock(&dev->struct_mutex);
3386 intel_crtc->cursor_addr = addr;
3387 intel_crtc->cursor_bo = bo;
3391 mutex_lock(&dev->struct_mutex);
3393 drm_gem_object_unreference(bo);
3394 mutex_unlock(&dev->struct_mutex);
3398 static int intel_crtc_cursor_move(struct drm_crtc *crtc, int x, int y)
3400 struct drm_device *dev = crtc->dev;
3401 struct drm_i915_private *dev_priv = dev->dev_private;
3402 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3403 struct intel_framebuffer *intel_fb;
3404 int pipe = intel_crtc->pipe;
3409 intel_fb = to_intel_framebuffer(crtc->fb);
3410 intel_mark_busy(dev, intel_fb->obj);
3414 temp |= CURSOR_POS_SIGN << CURSOR_X_SHIFT;
3418 temp |= CURSOR_POS_SIGN << CURSOR_Y_SHIFT;
3422 temp |= x << CURSOR_X_SHIFT;
3423 temp |= y << CURSOR_Y_SHIFT;
3425 adder = intel_crtc->cursor_addr;
3426 I915_WRITE((pipe == 0) ? CURAPOS : CURBPOS, temp);
3427 I915_WRITE((pipe == 0) ? CURABASE : CURBBASE, adder);
3432 /** Sets the color ramps on behalf of RandR */
3433 void intel_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
3434 u16 blue, int regno)
3436 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3438 intel_crtc->lut_r[regno] = red >> 8;
3439 intel_crtc->lut_g[regno] = green >> 8;
3440 intel_crtc->lut_b[regno] = blue >> 8;
3443 void intel_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
3444 u16 *blue, int regno)
3446 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3448 *red = intel_crtc->lut_r[regno] << 8;
3449 *green = intel_crtc->lut_g[regno] << 8;
3450 *blue = intel_crtc->lut_b[regno] << 8;
3453 static void intel_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
3454 u16 *blue, uint32_t size)
3456 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3462 for (i = 0; i < 256; i++) {
3463 intel_crtc->lut_r[i] = red[i] >> 8;
3464 intel_crtc->lut_g[i] = green[i] >> 8;
3465 intel_crtc->lut_b[i] = blue[i] >> 8;
3468 intel_crtc_load_lut(crtc);
3472 * Get a pipe with a simple mode set on it for doing load-based monitor
3475 * It will be up to the load-detect code to adjust the pipe as appropriate for
3476 * its requirements. The pipe will be connected to no other outputs.
3478 * Currently this code will only succeed if there is a pipe with no outputs
3479 * configured for it. In the future, it could choose to temporarily disable
3480 * some outputs to free up a pipe for its use.
3482 * \return crtc, or NULL if no pipes are available.
3485 /* VESA 640x480x72Hz mode to set on the pipe */
3486 static struct drm_display_mode load_detect_mode = {
3487 DRM_MODE("640x480", DRM_MODE_TYPE_DEFAULT, 31500, 640, 664,
3488 704, 832, 0, 480, 489, 491, 520, 0, DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
3491 struct drm_crtc *intel_get_load_detect_pipe(struct intel_output *intel_output,
3492 struct drm_display_mode *mode,
3495 struct intel_crtc *intel_crtc;
3496 struct drm_crtc *possible_crtc;
3497 struct drm_crtc *supported_crtc =NULL;
3498 struct drm_encoder *encoder = &intel_output->enc;
3499 struct drm_crtc *crtc = NULL;
3500 struct drm_device *dev = encoder->dev;
3501 struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
3502 struct drm_crtc_helper_funcs *crtc_funcs;
3506 * Algorithm gets a little messy:
3507 * - if the connector already has an assigned crtc, use it (but make
3508 * sure it's on first)
3509 * - try to find the first unused crtc that can drive this connector,
3510 * and use that if we find one
3511 * - if there are no unused crtcs available, try to use the first
3512 * one we found that supports the connector
3515 /* See if we already have a CRTC for this connector */
3516 if (encoder->crtc) {
3517 crtc = encoder->crtc;
3518 /* Make sure the crtc and connector are running */
3519 intel_crtc = to_intel_crtc(crtc);
3520 *dpms_mode = intel_crtc->dpms_mode;
3521 if (intel_crtc->dpms_mode != DRM_MODE_DPMS_ON) {
3522 crtc_funcs = crtc->helper_private;
3523 crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON);
3524 encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON);
3529 /* Find an unused one (if possible) */
3530 list_for_each_entry(possible_crtc, &dev->mode_config.crtc_list, head) {
3532 if (!(encoder->possible_crtcs & (1 << i)))
3534 if (!possible_crtc->enabled) {
3535 crtc = possible_crtc;
3538 if (!supported_crtc)
3539 supported_crtc = possible_crtc;
3543 * If we didn't find an unused CRTC, don't use any.
3549 encoder->crtc = crtc;
3550 intel_output->base.encoder = encoder;
3551 intel_output->load_detect_temp = true;
3553 intel_crtc = to_intel_crtc(crtc);
3554 *dpms_mode = intel_crtc->dpms_mode;
3556 if (!crtc->enabled) {
3558 mode = &load_detect_mode;
3559 drm_crtc_helper_set_mode(crtc, mode, 0, 0, crtc->fb);
3561 if (intel_crtc->dpms_mode != DRM_MODE_DPMS_ON) {
3562 crtc_funcs = crtc->helper_private;
3563 crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON);
3566 /* Add this connector to the crtc */
3567 encoder_funcs->mode_set(encoder, &crtc->mode, &crtc->mode);
3568 encoder_funcs->commit(encoder);
3570 /* let the connector get through one full cycle before testing */
3571 intel_wait_for_vblank(dev);
3576 void intel_release_load_detect_pipe(struct intel_output *intel_output, int dpms_mode)
3578 struct drm_encoder *encoder = &intel_output->enc;
3579 struct drm_device *dev = encoder->dev;
3580 struct drm_crtc *crtc = encoder->crtc;
3581 struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
3582 struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
3584 if (intel_output->load_detect_temp) {
3585 encoder->crtc = NULL;
3586 intel_output->base.encoder = NULL;
3587 intel_output->load_detect_temp = false;
3588 crtc->enabled = drm_helper_crtc_in_use(crtc);
3589 drm_helper_disable_unused_functions(dev);
3592 /* Switch crtc and output back off if necessary */
3593 if (crtc->enabled && dpms_mode != DRM_MODE_DPMS_ON) {
3594 if (encoder->crtc == crtc)
3595 encoder_funcs->dpms(encoder, dpms_mode);
3596 crtc_funcs->dpms(crtc, dpms_mode);
3600 /* Returns the clock of the currently programmed mode of the given pipe. */
3601 static int intel_crtc_clock_get(struct drm_device *dev, struct drm_crtc *crtc)
3603 struct drm_i915_private *dev_priv = dev->dev_private;
3604 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3605 int pipe = intel_crtc->pipe;
3606 u32 dpll = I915_READ((pipe == 0) ? DPLL_A : DPLL_B);
3608 intel_clock_t clock;
3610 if ((dpll & DISPLAY_RATE_SELECT_FPA1) == 0)
3611 fp = I915_READ((pipe == 0) ? FPA0 : FPB0);
3613 fp = I915_READ((pipe == 0) ? FPA1 : FPB1);
3615 clock.m1 = (fp & FP_M1_DIV_MASK) >> FP_M1_DIV_SHIFT;
3617 clock.n = ffs((fp & FP_N_IGD_DIV_MASK) >> FP_N_DIV_SHIFT) - 1;
3618 clock.m2 = (fp & FP_M2_IGD_DIV_MASK) >> FP_M2_DIV_SHIFT;
3620 clock.n = (fp & FP_N_DIV_MASK) >> FP_N_DIV_SHIFT;
3621 clock.m2 = (fp & FP_M2_DIV_MASK) >> FP_M2_DIV_SHIFT;
3626 clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_IGD) >>
3627 DPLL_FPA01_P1_POST_DIV_SHIFT_IGD);
3629 clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK) >>
3630 DPLL_FPA01_P1_POST_DIV_SHIFT);
3632 switch (dpll & DPLL_MODE_MASK) {
3633 case DPLLB_MODE_DAC_SERIAL:
3634 clock.p2 = dpll & DPLL_DAC_SERIAL_P2_CLOCK_DIV_5 ?
3637 case DPLLB_MODE_LVDS:
3638 clock.p2 = dpll & DPLLB_LVDS_P2_CLOCK_DIV_7 ?
3642 DRM_DEBUG_KMS("Unknown DPLL mode %08x in programmed "
3643 "mode\n", (int)(dpll & DPLL_MODE_MASK));
3647 /* XXX: Handle the 100Mhz refclk */
3648 intel_clock(dev, 96000, &clock);
3650 bool is_lvds = (pipe == 1) && (I915_READ(LVDS) & LVDS_PORT_EN);
3653 clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830_LVDS) >>
3654 DPLL_FPA01_P1_POST_DIV_SHIFT);
3657 if ((dpll & PLL_REF_INPUT_MASK) ==
3658 PLLB_REF_INPUT_SPREADSPECTRUMIN) {
3659 /* XXX: might not be 66MHz */
3660 intel_clock(dev, 66000, &clock);
3662 intel_clock(dev, 48000, &clock);
3664 if (dpll & PLL_P1_DIVIDE_BY_TWO)
3667 clock.p1 = ((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830) >>
3668 DPLL_FPA01_P1_POST_DIV_SHIFT) + 2;
3670 if (dpll & PLL_P2_DIVIDE_BY_4)
3675 intel_clock(dev, 48000, &clock);
3679 /* XXX: It would be nice to validate the clocks, but we can't reuse
3680 * i830PllIsValid() because it relies on the xf86_config connector
3681 * configuration being accurate, which it isn't necessarily.
3687 /** Returns the currently programmed mode of the given pipe. */
3688 struct drm_display_mode *intel_crtc_mode_get(struct drm_device *dev,
3689 struct drm_crtc *crtc)
3691 struct drm_i915_private *dev_priv = dev->dev_private;
3692 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3693 int pipe = intel_crtc->pipe;
3694 struct drm_display_mode *mode;
3695 int htot = I915_READ((pipe == 0) ? HTOTAL_A : HTOTAL_B);
3696 int hsync = I915_READ((pipe == 0) ? HSYNC_A : HSYNC_B);
3697 int vtot = I915_READ((pipe == 0) ? VTOTAL_A : VTOTAL_B);
3698 int vsync = I915_READ((pipe == 0) ? VSYNC_A : VSYNC_B);
3700 mode = kzalloc(sizeof(*mode), GFP_KERNEL);
3704 mode->clock = intel_crtc_clock_get(dev, crtc);
3705 mode->hdisplay = (htot & 0xffff) + 1;
3706 mode->htotal = ((htot & 0xffff0000) >> 16) + 1;
3707 mode->hsync_start = (hsync & 0xffff) + 1;
3708 mode->hsync_end = ((hsync & 0xffff0000) >> 16) + 1;
3709 mode->vdisplay = (vtot & 0xffff) + 1;
3710 mode->vtotal = ((vtot & 0xffff0000) >> 16) + 1;
3711 mode->vsync_start = (vsync & 0xffff) + 1;
3712 mode->vsync_end = ((vsync & 0xffff0000) >> 16) + 1;
3714 drm_mode_set_name(mode);
3715 drm_mode_set_crtcinfo(mode, 0);
3720 #define GPU_IDLE_TIMEOUT 500 /* ms */
3722 /* When this timer fires, we've been idle for awhile */
3723 static void intel_gpu_idle_timer(unsigned long arg)
3725 struct drm_device *dev = (struct drm_device *)arg;
3726 drm_i915_private_t *dev_priv = dev->dev_private;
3728 DRM_DEBUG_DRIVER("idle timer fired, downclocking\n");
3730 dev_priv->busy = false;
3732 queue_work(dev_priv->wq, &dev_priv->idle_work);
3735 void intel_increase_renderclock(struct drm_device *dev, bool schedule)
3737 drm_i915_private_t *dev_priv = dev->dev_private;
3742 if (!dev_priv->render_reclock_avail) {
3743 DRM_DEBUG_DRIVER("not reclocking render clock\n");
3747 /* Restore render clock frequency to original value */
3748 if (IS_G4X(dev) || IS_I9XX(dev))
3749 pci_write_config_word(dev->pdev, GCFGC, dev_priv->orig_clock);
3750 else if (IS_I85X(dev))
3751 pci_write_config_word(dev->pdev, HPLLCC, dev_priv->orig_clock);
3752 DRM_DEBUG_DRIVER("increasing render clock frequency\n");
3754 /* Schedule downclock */
3756 mod_timer(&dev_priv->idle_timer, jiffies +
3757 msecs_to_jiffies(GPU_IDLE_TIMEOUT));
3760 void intel_decrease_renderclock(struct drm_device *dev)
3762 drm_i915_private_t *dev_priv = dev->dev_private;
3767 if (!dev_priv->render_reclock_avail) {
3768 DRM_DEBUG_DRIVER("not reclocking render clock\n");
3775 /* Adjust render clock... */
3776 pci_read_config_word(dev->pdev, GCFGC, &gcfgc);
3778 /* Down to minimum... */
3779 gcfgc &= ~GM45_GC_RENDER_CLOCK_MASK;
3780 gcfgc |= GM45_GC_RENDER_CLOCK_266_MHZ;
3782 pci_write_config_word(dev->pdev, GCFGC, gcfgc);
3783 } else if (IS_I965G(dev)) {
3786 /* Adjust render clock... */
3787 pci_read_config_word(dev->pdev, GCFGC, &gcfgc);
3789 /* Down to minimum... */
3790 gcfgc &= ~I965_GC_RENDER_CLOCK_MASK;
3791 gcfgc |= I965_GC_RENDER_CLOCK_267_MHZ;
3793 pci_write_config_word(dev->pdev, GCFGC, gcfgc);
3794 } else if (IS_I945G(dev) || IS_I945GM(dev)) {
3797 /* Adjust render clock... */
3798 pci_read_config_word(dev->pdev, GCFGC, &gcfgc);
3800 /* Down to minimum... */
3801 gcfgc &= ~I945_GC_RENDER_CLOCK_MASK;
3802 gcfgc |= I945_GC_RENDER_CLOCK_166_MHZ;
3804 pci_write_config_word(dev->pdev, GCFGC, gcfgc);
3805 } else if (IS_I915G(dev)) {
3808 /* Adjust render clock... */
3809 pci_read_config_word(dev->pdev, GCFGC, &gcfgc);
3811 /* Down to minimum... */
3812 gcfgc &= ~I915_GC_RENDER_CLOCK_MASK;
3813 gcfgc |= I915_GC_RENDER_CLOCK_166_MHZ;
3815 pci_write_config_word(dev->pdev, GCFGC, gcfgc);
3816 } else if (IS_I85X(dev)) {
3819 /* Adjust render clock... */
3820 pci_read_config_word(dev->pdev, HPLLCC, &hpllcc);
3822 /* Up to maximum... */
3823 hpllcc &= ~GC_CLOCK_CONTROL_MASK;
3824 hpllcc |= GC_CLOCK_133_200;
3826 pci_write_config_word(dev->pdev, HPLLCC, hpllcc);
3828 DRM_DEBUG_DRIVER("decreasing render clock frequency\n");
3831 /* Note that no increase function is needed for this - increase_renderclock()
3832 * will also rewrite these bits
3834 void intel_decrease_displayclock(struct drm_device *dev)
3839 if (IS_I945G(dev) || IS_I945GM(dev) || IS_I915G(dev) ||
3843 /* Adjust render clock... */
3844 pci_read_config_word(dev->pdev, GCFGC, &gcfgc);
3846 /* Down to minimum... */
3850 pci_write_config_word(dev->pdev, GCFGC, gcfgc);
3854 #define CRTC_IDLE_TIMEOUT 1000 /* ms */
3856 static void intel_crtc_idle_timer(unsigned long arg)
3858 struct intel_crtc *intel_crtc = (struct intel_crtc *)arg;
3859 struct drm_crtc *crtc = &intel_crtc->base;
3860 drm_i915_private_t *dev_priv = crtc->dev->dev_private;
3862 DRM_DEBUG_DRIVER("idle timer fired, downclocking\n");
3864 intel_crtc->busy = false;
3866 queue_work(dev_priv->wq, &dev_priv->idle_work);
3869 static void intel_increase_pllclock(struct drm_crtc *crtc, bool schedule)
3871 struct drm_device *dev = crtc->dev;
3872 drm_i915_private_t *dev_priv = dev->dev_private;
3873 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3874 int pipe = intel_crtc->pipe;
3875 int dpll_reg = (pipe == 0) ? DPLL_A : DPLL_B;
3876 int dpll = I915_READ(dpll_reg);
3881 if (!dev_priv->lvds_downclock_avail)
3884 if (!HAS_PIPE_CXSR(dev) && (dpll & DISPLAY_RATE_SELECT_FPA1)) {
3885 DRM_DEBUG_DRIVER("upclocking LVDS\n");
3887 /* Unlock panel regs */
3888 I915_WRITE(PP_CONTROL, I915_READ(PP_CONTROL) | (0xabcd << 16));
3890 dpll &= ~DISPLAY_RATE_SELECT_FPA1;
3891 I915_WRITE(dpll_reg, dpll);
3892 dpll = I915_READ(dpll_reg);
3893 intel_wait_for_vblank(dev);
3894 dpll = I915_READ(dpll_reg);
3895 if (dpll & DISPLAY_RATE_SELECT_FPA1)
3896 DRM_DEBUG_DRIVER("failed to upclock LVDS!\n");
3898 /* ...and lock them again */
3899 I915_WRITE(PP_CONTROL, I915_READ(PP_CONTROL) & 0x3);
3902 /* Schedule downclock */
3904 mod_timer(&intel_crtc->idle_timer, jiffies +
3905 msecs_to_jiffies(CRTC_IDLE_TIMEOUT));
3908 static void intel_decrease_pllclock(struct drm_crtc *crtc)
3910 struct drm_device *dev = crtc->dev;
3911 drm_i915_private_t *dev_priv = dev->dev_private;
3912 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
3913 int pipe = intel_crtc->pipe;
3914 int dpll_reg = (pipe == 0) ? DPLL_A : DPLL_B;
3915 int dpll = I915_READ(dpll_reg);
3920 if (!dev_priv->lvds_downclock_avail)
3924 * Since this is called by a timer, we should never get here in
3927 if (!HAS_PIPE_CXSR(dev) && intel_crtc->lowfreq_avail) {
3928 DRM_DEBUG_DRIVER("downclocking LVDS\n");
3930 /* Unlock panel regs */
3931 I915_WRITE(PP_CONTROL, I915_READ(PP_CONTROL) | (0xabcd << 16));
3933 dpll |= DISPLAY_RATE_SELECT_FPA1;
3934 I915_WRITE(dpll_reg, dpll);
3935 dpll = I915_READ(dpll_reg);
3936 intel_wait_for_vblank(dev);
3937 dpll = I915_READ(dpll_reg);
3938 if (!(dpll & DISPLAY_RATE_SELECT_FPA1))
3939 DRM_DEBUG_DRIVER("failed to downclock LVDS!\n");
3941 /* ...and lock them again */
3942 I915_WRITE(PP_CONTROL, I915_READ(PP_CONTROL) & 0x3);
3948 * intel_idle_update - adjust clocks for idleness
3949 * @work: work struct
3951 * Either the GPU or display (or both) went idle. Check the busy status
3952 * here and adjust the CRTC and GPU clocks as necessary.
3954 static void intel_idle_update(struct work_struct *work)
3956 drm_i915_private_t *dev_priv = container_of(work, drm_i915_private_t,
3958 struct drm_device *dev = dev_priv->dev;
3959 struct drm_crtc *crtc;
3960 struct intel_crtc *intel_crtc;
3962 if (!i915_powersave)
3965 mutex_lock(&dev->struct_mutex);
3967 /* GPU isn't processing, downclock it. */
3968 if (!dev_priv->busy) {
3969 intel_decrease_renderclock(dev);
3970 intel_decrease_displayclock(dev);
3973 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
3974 /* Skip inactive CRTCs */
3978 intel_crtc = to_intel_crtc(crtc);
3979 if (!intel_crtc->busy)
3980 intel_decrease_pllclock(crtc);
3983 mutex_unlock(&dev->struct_mutex);
3987 * intel_mark_busy - mark the GPU and possibly the display busy
3989 * @obj: object we're operating on
3991 * Callers can use this function to indicate that the GPU is busy processing
3992 * commands. If @obj matches one of the CRTC objects (i.e. it's a scanout
3993 * buffer), we'll also mark the display as busy, so we know to increase its
3996 void intel_mark_busy(struct drm_device *dev, struct drm_gem_object *obj)
3998 drm_i915_private_t *dev_priv = dev->dev_private;
3999 struct drm_crtc *crtc = NULL;
4000 struct intel_framebuffer *intel_fb;
4001 struct intel_crtc *intel_crtc;
4003 if (!drm_core_check_feature(dev, DRIVER_MODESET))
4006 dev_priv->busy = true;
4007 intel_increase_renderclock(dev, true);
4009 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
4013 intel_crtc = to_intel_crtc(crtc);
4014 intel_fb = to_intel_framebuffer(crtc->fb);
4015 if (intel_fb->obj == obj) {
4016 if (!intel_crtc->busy) {
4017 /* Non-busy -> busy, upclock */
4018 intel_increase_pllclock(crtc, true);
4019 intel_crtc->busy = true;
4021 /* Busy -> busy, put off timer */
4022 mod_timer(&intel_crtc->idle_timer, jiffies +
4023 msecs_to_jiffies(CRTC_IDLE_TIMEOUT));
4029 static void intel_crtc_destroy(struct drm_crtc *crtc)
4031 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4033 drm_crtc_cleanup(crtc);
4037 static const struct drm_crtc_helper_funcs intel_helper_funcs = {
4038 .dpms = intel_crtc_dpms,
4039 .mode_fixup = intel_crtc_mode_fixup,
4040 .mode_set = intel_crtc_mode_set,
4041 .mode_set_base = intel_pipe_set_base,
4042 .prepare = intel_crtc_prepare,
4043 .commit = intel_crtc_commit,
4044 .load_lut = intel_crtc_load_lut,
4047 static const struct drm_crtc_funcs intel_crtc_funcs = {
4048 .cursor_set = intel_crtc_cursor_set,
4049 .cursor_move = intel_crtc_cursor_move,
4050 .gamma_set = intel_crtc_gamma_set,
4051 .set_config = drm_crtc_helper_set_config,
4052 .destroy = intel_crtc_destroy,
4056 static void intel_crtc_init(struct drm_device *dev, int pipe)
4058 struct intel_crtc *intel_crtc;
4061 intel_crtc = kzalloc(sizeof(struct intel_crtc) + (INTELFB_CONN_LIMIT * sizeof(struct drm_connector *)), GFP_KERNEL);
4062 if (intel_crtc == NULL)
4065 drm_crtc_init(dev, &intel_crtc->base, &intel_crtc_funcs);
4067 drm_mode_crtc_set_gamma_size(&intel_crtc->base, 256);
4068 intel_crtc->pipe = pipe;
4069 intel_crtc->plane = pipe;
4070 for (i = 0; i < 256; i++) {
4071 intel_crtc->lut_r[i] = i;
4072 intel_crtc->lut_g[i] = i;
4073 intel_crtc->lut_b[i] = i;
4076 /* Swap pipes & planes for FBC on pre-965 */
4077 intel_crtc->pipe = pipe;
4078 intel_crtc->plane = pipe;
4079 if (IS_MOBILE(dev) && (IS_I9XX(dev) && !IS_I965G(dev))) {
4080 DRM_DEBUG_KMS("swapping pipes & planes for FBC\n");
4081 intel_crtc->plane = ((pipe == 0) ? 1 : 0);
4084 intel_crtc->cursor_addr = 0;
4085 intel_crtc->dpms_mode = DRM_MODE_DPMS_OFF;
4086 drm_crtc_helper_add(&intel_crtc->base, &intel_helper_funcs);
4088 intel_crtc->busy = false;
4090 setup_timer(&intel_crtc->idle_timer, intel_crtc_idle_timer,
4091 (unsigned long)intel_crtc);
4094 int intel_get_pipe_from_crtc_id(struct drm_device *dev, void *data,
4095 struct drm_file *file_priv)
4097 drm_i915_private_t *dev_priv = dev->dev_private;
4098 struct drm_i915_get_pipe_from_crtc_id *pipe_from_crtc_id = data;
4099 struct drm_mode_object *drmmode_obj;
4100 struct intel_crtc *crtc;
4103 DRM_ERROR("called with no initialization\n");
4107 drmmode_obj = drm_mode_object_find(dev, pipe_from_crtc_id->crtc_id,
4108 DRM_MODE_OBJECT_CRTC);
4111 DRM_ERROR("no such CRTC id\n");
4115 crtc = to_intel_crtc(obj_to_crtc(drmmode_obj));
4116 pipe_from_crtc_id->pipe = crtc->pipe;
4121 struct drm_crtc *intel_get_crtc_from_pipe(struct drm_device *dev, int pipe)
4123 struct drm_crtc *crtc = NULL;
4125 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
4126 struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
4127 if (intel_crtc->pipe == pipe)
4133 static int intel_connector_clones(struct drm_device *dev, int type_mask)
4136 struct drm_connector *connector;
4139 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
4140 struct intel_output *intel_output = to_intel_output(connector);
4141 if (type_mask & intel_output->clone_mask)
4142 index_mask |= (1 << entry);
4149 static void intel_setup_outputs(struct drm_device *dev)
4151 struct drm_i915_private *dev_priv = dev->dev_private;
4152 struct drm_connector *connector;
4154 intel_crt_init(dev);
4156 /* Set up integrated LVDS */
4157 if (IS_MOBILE(dev) && !IS_I830(dev))
4158 intel_lvds_init(dev);
4160 if (IS_IGDNG(dev)) {
4163 if (IS_MOBILE(dev) && (I915_READ(DP_A) & DP_DETECTED))
4164 intel_dp_init(dev, DP_A);
4166 if (I915_READ(HDMIB) & PORT_DETECTED) {
4168 /* found = intel_sdvo_init(dev, HDMIB); */
4171 intel_hdmi_init(dev, HDMIB);
4172 if (!found && (I915_READ(PCH_DP_B) & DP_DETECTED))
4173 intel_dp_init(dev, PCH_DP_B);
4176 if (I915_READ(HDMIC) & PORT_DETECTED)
4177 intel_hdmi_init(dev, HDMIC);
4179 if (I915_READ(HDMID) & PORT_DETECTED)
4180 intel_hdmi_init(dev, HDMID);
4182 if (I915_READ(PCH_DP_C) & DP_DETECTED)
4183 intel_dp_init(dev, PCH_DP_C);
4185 if (I915_READ(PCH_DP_D) & DP_DETECTED)
4186 intel_dp_init(dev, PCH_DP_D);
4188 } else if (IS_I9XX(dev)) {
4191 if (I915_READ(SDVOB) & SDVO_DETECTED) {
4192 found = intel_sdvo_init(dev, SDVOB);
4193 if (!found && SUPPORTS_INTEGRATED_HDMI(dev))
4194 intel_hdmi_init(dev, SDVOB);
4196 if (!found && SUPPORTS_INTEGRATED_DP(dev))
4197 intel_dp_init(dev, DP_B);
4200 /* Before G4X SDVOC doesn't have its own detect register */
4202 if (I915_READ(SDVOB) & SDVO_DETECTED)
4203 found = intel_sdvo_init(dev, SDVOC);
4205 if (!found && (I915_READ(SDVOC) & SDVO_DETECTED)) {
4207 if (SUPPORTS_INTEGRATED_HDMI(dev))
4208 intel_hdmi_init(dev, SDVOC);
4209 if (SUPPORTS_INTEGRATED_DP(dev))
4210 intel_dp_init(dev, DP_C);
4213 if (SUPPORTS_INTEGRATED_DP(dev) && (I915_READ(DP_D) & DP_DETECTED))
4214 intel_dp_init(dev, DP_D);
4216 intel_dvo_init(dev);
4218 if (IS_I9XX(dev) && IS_MOBILE(dev) && !IS_IGDNG(dev))
4221 list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
4222 struct intel_output *intel_output = to_intel_output(connector);
4223 struct drm_encoder *encoder = &intel_output->enc;
4225 encoder->possible_crtcs = intel_output->crtc_mask;
4226 encoder->possible_clones = intel_connector_clones(dev,
4227 intel_output->clone_mask);
4231 static void intel_user_framebuffer_destroy(struct drm_framebuffer *fb)
4233 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
4234 struct drm_device *dev = fb->dev;
4237 intelfb_remove(dev, fb);
4239 drm_framebuffer_cleanup(fb);
4240 mutex_lock(&dev->struct_mutex);
4241 drm_gem_object_unreference(intel_fb->obj);
4242 mutex_unlock(&dev->struct_mutex);
4247 static int intel_user_framebuffer_create_handle(struct drm_framebuffer *fb,
4248 struct drm_file *file_priv,
4249 unsigned int *handle)
4251 struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
4252 struct drm_gem_object *object = intel_fb->obj;
4254 return drm_gem_handle_create(file_priv, object, handle);
4257 static const struct drm_framebuffer_funcs intel_fb_funcs = {
4258 .destroy = intel_user_framebuffer_destroy,
4259 .create_handle = intel_user_framebuffer_create_handle,
4262 int intel_framebuffer_create(struct drm_device *dev,
4263 struct drm_mode_fb_cmd *mode_cmd,
4264 struct drm_framebuffer **fb,
4265 struct drm_gem_object *obj)
4267 struct intel_framebuffer *intel_fb;
4270 intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
4274 ret = drm_framebuffer_init(dev, &intel_fb->base, &intel_fb_funcs);
4276 DRM_ERROR("framebuffer init failed %d\n", ret);
4280 drm_helper_mode_fill_fb_struct(&intel_fb->base, mode_cmd);
4282 intel_fb->obj = obj;
4284 *fb = &intel_fb->base;
4290 static struct drm_framebuffer *
4291 intel_user_framebuffer_create(struct drm_device *dev,
4292 struct drm_file *filp,
4293 struct drm_mode_fb_cmd *mode_cmd)
4295 struct drm_gem_object *obj;
4296 struct drm_framebuffer *fb;
4299 obj = drm_gem_object_lookup(dev, filp, mode_cmd->handle);
4303 ret = intel_framebuffer_create(dev, mode_cmd, &fb, obj);
4305 mutex_lock(&dev->struct_mutex);
4306 drm_gem_object_unreference(obj);
4307 mutex_unlock(&dev->struct_mutex);
4314 static const struct drm_mode_config_funcs intel_mode_funcs = {
4315 .fb_create = intel_user_framebuffer_create,
4316 .fb_changed = intelfb_probe,
4319 void intel_init_clock_gating(struct drm_device *dev)
4321 struct drm_i915_private *dev_priv = dev->dev_private;
4324 * Disable clock gating reported to work incorrectly according to the
4325 * specs, but enable as much else as we can.
4327 if (IS_IGDNG(dev)) {
4329 } else if (IS_G4X(dev)) {
4330 uint32_t dspclk_gate;
4331 I915_WRITE(RENCLK_GATE_D1, 0);
4332 I915_WRITE(RENCLK_GATE_D2, VF_UNIT_CLOCK_GATE_DISABLE |
4333 GS_UNIT_CLOCK_GATE_DISABLE |
4334 CL_UNIT_CLOCK_GATE_DISABLE);
4335 I915_WRITE(RAMCLK_GATE_D, 0);
4336 dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE |
4337 OVRUNIT_CLOCK_GATE_DISABLE |
4338 OVCUNIT_CLOCK_GATE_DISABLE;
4340 dspclk_gate |= DSSUNIT_CLOCK_GATE_DISABLE;
4341 I915_WRITE(DSPCLK_GATE_D, dspclk_gate);
4342 } else if (IS_I965GM(dev)) {
4343 I915_WRITE(RENCLK_GATE_D1, I965_RCC_CLOCK_GATE_DISABLE);
4344 I915_WRITE(RENCLK_GATE_D2, 0);
4345 I915_WRITE(DSPCLK_GATE_D, 0);
4346 I915_WRITE(RAMCLK_GATE_D, 0);
4347 I915_WRITE16(DEUC, 0);
4348 } else if (IS_I965G(dev)) {
4349 I915_WRITE(RENCLK_GATE_D1, I965_RCZ_CLOCK_GATE_DISABLE |
4350 I965_RCC_CLOCK_GATE_DISABLE |
4351 I965_RCPB_CLOCK_GATE_DISABLE |
4352 I965_ISC_CLOCK_GATE_DISABLE |
4353 I965_FBC_CLOCK_GATE_DISABLE);
4354 I915_WRITE(RENCLK_GATE_D2, 0);
4355 } else if (IS_I9XX(dev)) {
4356 u32 dstate = I915_READ(D_STATE);
4358 dstate |= DSTATE_PLL_D3_OFF | DSTATE_GFX_CLOCK_GATING |
4359 DSTATE_DOT_CLOCK_GATING;
4360 I915_WRITE(D_STATE, dstate);
4361 } else if (IS_I85X(dev) || IS_I865G(dev)) {
4362 I915_WRITE(RENCLK_GATE_D1, SV_CLOCK_GATE_DISABLE);
4363 } else if (IS_I830(dev)) {
4364 I915_WRITE(DSPCLK_GATE_D, OVRUNIT_CLOCK_GATE_DISABLE);
4368 * GPU can automatically power down the render unit if given a page
4371 if (I915_HAS_RC6(dev)) {
4372 struct drm_gem_object *pwrctx;
4373 struct drm_i915_gem_object *obj_priv;
4376 pwrctx = drm_gem_object_alloc(dev, 4096);
4378 DRM_DEBUG("failed to alloc power context, RC6 disabled\n");
4382 ret = i915_gem_object_pin(pwrctx, 4096);
4384 DRM_ERROR("failed to pin power context: %d\n", ret);
4385 drm_gem_object_unreference(pwrctx);
4389 i915_gem_object_set_to_gtt_domain(pwrctx, 1);
4391 obj_priv = pwrctx->driver_private;
4393 I915_WRITE(PWRCTXA, obj_priv->gtt_offset | PWRCTX_EN);
4394 I915_WRITE(MCHBAR_RENDER_STANDBY,
4395 I915_READ(MCHBAR_RENDER_STANDBY) & ~RCX_SW_EXIT);
4397 dev_priv->pwrctx = pwrctx;
4404 /* Set up chip specific display functions */
4405 static void intel_init_display(struct drm_device *dev)
4407 struct drm_i915_private *dev_priv = dev->dev_private;
4409 /* We always want a DPMS function */
4411 dev_priv->display.dpms = igdng_crtc_dpms;
4413 dev_priv->display.dpms = i9xx_crtc_dpms;
4415 /* Only mobile has FBC, leave pointers NULL for other chips */
4416 if (IS_MOBILE(dev)) {
4418 dev_priv->display.fbc_enabled = g4x_fbc_enabled;
4419 dev_priv->display.enable_fbc = g4x_enable_fbc;
4420 dev_priv->display.disable_fbc = g4x_disable_fbc;
4421 } else if (IS_I965GM(dev) || IS_I945GM(dev) || IS_I915GM(dev)) {
4422 dev_priv->display.fbc_enabled = i8xx_fbc_enabled;
4423 dev_priv->display.enable_fbc = i8xx_enable_fbc;
4424 dev_priv->display.disable_fbc = i8xx_disable_fbc;
4426 /* 855GM needs testing */
4429 /* Returns the core display clock speed */
4431 dev_priv->display.get_display_clock_speed =
4432 i945_get_display_clock_speed;
4433 else if (IS_I915G(dev))
4434 dev_priv->display.get_display_clock_speed =
4435 i915_get_display_clock_speed;
4436 else if (IS_I945GM(dev) || IS_845G(dev) || IS_IGDGM(dev))
4437 dev_priv->display.get_display_clock_speed =
4438 i9xx_misc_get_display_clock_speed;
4439 else if (IS_I915GM(dev))
4440 dev_priv->display.get_display_clock_speed =
4441 i915gm_get_display_clock_speed;
4442 else if (IS_I865G(dev))
4443 dev_priv->display.get_display_clock_speed =
4444 i865_get_display_clock_speed;
4445 else if (IS_I85X(dev))
4446 dev_priv->display.get_display_clock_speed =
4447 i855_get_display_clock_speed;
4449 dev_priv->display.get_display_clock_speed =
4450 i830_get_display_clock_speed;
4452 /* For FIFO watermark updates */
4454 dev_priv->display.update_wm = NULL;
4455 else if (IS_G4X(dev))
4456 dev_priv->display.update_wm = g4x_update_wm;
4457 else if (IS_I965G(dev))
4458 dev_priv->display.update_wm = i965_update_wm;
4459 else if (IS_I9XX(dev) || IS_MOBILE(dev)) {
4460 dev_priv->display.update_wm = i9xx_update_wm;
4461 dev_priv->display.get_fifo_size = i9xx_get_fifo_size;
4464 dev_priv->display.get_fifo_size = i85x_get_fifo_size;
4465 else if (IS_845G(dev))
4466 dev_priv->display.get_fifo_size = i845_get_fifo_size;
4468 dev_priv->display.get_fifo_size = i830_get_fifo_size;
4469 dev_priv->display.update_wm = i830_update_wm;
4473 void intel_modeset_init(struct drm_device *dev)
4475 struct drm_i915_private *dev_priv = dev->dev_private;
4479 drm_mode_config_init(dev);
4481 dev->mode_config.min_width = 0;
4482 dev->mode_config.min_height = 0;
4484 dev->mode_config.funcs = (void *)&intel_mode_funcs;
4486 intel_init_display(dev);
4488 if (IS_I965G(dev)) {
4489 dev->mode_config.max_width = 8192;
4490 dev->mode_config.max_height = 8192;
4491 } else if (IS_I9XX(dev)) {
4492 dev->mode_config.max_width = 4096;
4493 dev->mode_config.max_height = 4096;
4495 dev->mode_config.max_width = 2048;
4496 dev->mode_config.max_height = 2048;
4499 /* set memory base */
4501 dev->mode_config.fb_base = pci_resource_start(dev->pdev, 2);
4503 dev->mode_config.fb_base = pci_resource_start(dev->pdev, 0);
4505 if (IS_MOBILE(dev) || IS_I9XX(dev))
4509 DRM_DEBUG_KMS("%d display pipe%s available.\n",
4510 num_pipe, num_pipe > 1 ? "s" : "");
4513 pci_read_config_word(dev->pdev, HPLLCC, &dev_priv->orig_clock);
4514 else if (IS_I9XX(dev) || IS_G4X(dev))
4515 pci_read_config_word(dev->pdev, GCFGC, &dev_priv->orig_clock);
4517 for (i = 0; i < num_pipe; i++) {
4518 intel_crtc_init(dev, i);
4521 intel_setup_outputs(dev);
4523 intel_init_clock_gating(dev);
4525 INIT_WORK(&dev_priv->idle_work, intel_idle_update);
4526 setup_timer(&dev_priv->idle_timer, intel_gpu_idle_timer,
4527 (unsigned long)dev);
4529 intel_setup_overlay(dev);
4532 void intel_modeset_cleanup(struct drm_device *dev)
4534 struct drm_i915_private *dev_priv = dev->dev_private;
4535 struct drm_crtc *crtc;
4536 struct intel_crtc *intel_crtc;
4538 mutex_lock(&dev->struct_mutex);
4540 list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
4541 /* Skip inactive CRTCs */
4545 intel_crtc = to_intel_crtc(crtc);
4546 intel_increase_pllclock(crtc, false);
4547 del_timer_sync(&intel_crtc->idle_timer);
4550 intel_increase_renderclock(dev, false);
4551 del_timer_sync(&dev_priv->idle_timer);
4553 mutex_unlock(&dev->struct_mutex);
4555 if (dev_priv->display.disable_fbc)
4556 dev_priv->display.disable_fbc(dev);
4558 if (dev_priv->pwrctx) {
4559 i915_gem_object_unpin(dev_priv->pwrctx);
4560 drm_gem_object_unreference(dev_priv->pwrctx);
4563 drm_mode_config_cleanup(dev);
4567 /* current intel driver doesn't take advantage of encoders
4568 always give back the encoder for the connector
4570 struct drm_encoder *intel_best_encoder(struct drm_connector *connector)
4572 struct intel_output *intel_output = to_intel_output(connector);
4574 return &intel_output->enc;
4578 * set vga decode state - true == enable VGA decode
4580 int intel_modeset_vga_set_state(struct drm_device *dev, bool state)
4582 struct drm_i915_private *dev_priv = dev->dev_private;
4585 pci_read_config_word(dev_priv->bridge_dev, INTEL_GMCH_CTRL, &gmch_ctrl);
4587 gmch_ctrl &= ~INTEL_GMCH_VGA_DISABLE;
4589 gmch_ctrl |= INTEL_GMCH_VGA_DISABLE;
4590 pci_write_config_word(dev_priv->bridge_dev, INTEL_GMCH_CTRL, gmch_ctrl);