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79e53945 JB |
1 | /* |
2 | * Copyright © 2006-2007 Intel Corporation | |
3 | * | |
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: | |
10 | * | |
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 | |
13 | * Software. | |
14 | * | |
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. | |
22 | * | |
23 | * Authors: | |
24 | * Eric Anholt <eric@anholt.net> | |
25 | */ | |
26 | ||
c1c7af60 JB |
27 | #include <linux/module.h> |
28 | #include <linux/input.h> | |
79e53945 | 29 | #include <linux/i2c.h> |
7662c8bd | 30 | #include <linux/kernel.h> |
79e53945 JB |
31 | #include "drmP.h" |
32 | #include "intel_drv.h" | |
33 | #include "i915_drm.h" | |
34 | #include "i915_drv.h" | |
a4fc5ed6 | 35 | #include "intel_dp.h" |
79e53945 JB |
36 | |
37 | #include "drm_crtc_helper.h" | |
38 | ||
32f9d658 ZW |
39 | #define HAS_eDP (intel_pipe_has_type(crtc, INTEL_OUTPUT_EDP)) |
40 | ||
79e53945 | 41 | bool intel_pipe_has_type (struct drm_crtc *crtc, int type); |
7662c8bd | 42 | static void intel_update_watermarks(struct drm_device *dev); |
652c393a | 43 | static void intel_increase_pllclock(struct drm_crtc *crtc, bool schedule); |
79e53945 JB |
44 | |
45 | typedef struct { | |
46 | /* given values */ | |
47 | int n; | |
48 | int m1, m2; | |
49 | int p1, p2; | |
50 | /* derived values */ | |
51 | int dot; | |
52 | int vco; | |
53 | int m; | |
54 | int p; | |
55 | } intel_clock_t; | |
56 | ||
57 | typedef struct { | |
58 | int min, max; | |
59 | } intel_range_t; | |
60 | ||
61 | typedef struct { | |
62 | int dot_limit; | |
63 | int p2_slow, p2_fast; | |
64 | } intel_p2_t; | |
65 | ||
66 | #define INTEL_P2_NUM 2 | |
d4906093 ML |
67 | typedef struct intel_limit intel_limit_t; |
68 | struct intel_limit { | |
79e53945 JB |
69 | intel_range_t dot, vco, n, m, m1, m2, p, p1; |
70 | intel_p2_t p2; | |
d4906093 ML |
71 | bool (* find_pll)(const intel_limit_t *, struct drm_crtc *, |
72 | int, int, intel_clock_t *); | |
652c393a JB |
73 | bool (* find_reduced_pll)(const intel_limit_t *, struct drm_crtc *, |
74 | int, int, intel_clock_t *); | |
d4906093 | 75 | }; |
79e53945 JB |
76 | |
77 | #define I8XX_DOT_MIN 25000 | |
78 | #define I8XX_DOT_MAX 350000 | |
79 | #define I8XX_VCO_MIN 930000 | |
80 | #define I8XX_VCO_MAX 1400000 | |
81 | #define I8XX_N_MIN 3 | |
82 | #define I8XX_N_MAX 16 | |
83 | #define I8XX_M_MIN 96 | |
84 | #define I8XX_M_MAX 140 | |
85 | #define I8XX_M1_MIN 18 | |
86 | #define I8XX_M1_MAX 26 | |
87 | #define I8XX_M2_MIN 6 | |
88 | #define I8XX_M2_MAX 16 | |
89 | #define I8XX_P_MIN 4 | |
90 | #define I8XX_P_MAX 128 | |
91 | #define I8XX_P1_MIN 2 | |
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 | |
0c2e3952 | 98 | #define I8XX_P2_LVDS_FAST 7 |
79e53945 JB |
99 | #define I8XX_P2_SLOW_LIMIT 165000 |
100 | ||
101 | #define I9XX_DOT_MIN 20000 | |
102 | #define I9XX_DOT_MAX 400000 | |
103 | #define I9XX_VCO_MIN 1400000 | |
104 | #define I9XX_VCO_MAX 2800000 | |
2177832f SL |
105 | #define IGD_VCO_MIN 1700000 |
106 | #define IGD_VCO_MAX 3500000 | |
f3cade5c KH |
107 | #define I9XX_N_MIN 1 |
108 | #define I9XX_N_MAX 6 | |
2177832f SL |
109 | /* IGD's Ncounter is a ring counter */ |
110 | #define IGD_N_MIN 3 | |
111 | #define IGD_N_MAX 6 | |
79e53945 JB |
112 | #define I9XX_M_MIN 70 |
113 | #define I9XX_M_MAX 120 | |
2177832f SL |
114 | #define IGD_M_MIN 2 |
115 | #define IGD_M_MAX 256 | |
79e53945 | 116 | #define I9XX_M1_MIN 10 |
f3cade5c | 117 | #define I9XX_M1_MAX 22 |
79e53945 JB |
118 | #define I9XX_M2_MIN 5 |
119 | #define I9XX_M2_MAX 9 | |
2177832f SL |
120 | /* IGD M1 is reserved, and must be 0 */ |
121 | #define IGD_M1_MIN 0 | |
122 | #define IGD_M1_MAX 0 | |
123 | #define IGD_M2_MIN 0 | |
124 | #define IGD_M2_MAX 254 | |
79e53945 JB |
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 | |
2177832f SL |
129 | #define IGD_P_LVDS_MIN 7 |
130 | #define IGD_P_LVDS_MAX 112 | |
79e53945 JB |
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 | |
139 | ||
044c7c41 ML |
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 | |
160 | ||
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 | |
179 | ||
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 | |
198 | ||
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 | |
217 | ||
a4fc5ed6 KP |
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 | |
236 | ||
2c07245f ZW |
237 | /* IGDNG */ |
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). | |
240 | */ | |
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 */ | |
264 | ||
d4906093 ML |
265 | static bool |
266 | intel_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc, | |
267 | int target, int refclk, intel_clock_t *best_clock); | |
268 | static bool | |
652c393a JB |
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); | |
271 | static bool | |
d4906093 ML |
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); | |
2c07245f ZW |
274 | static bool |
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); | |
79e53945 | 277 | |
a4fc5ed6 KP |
278 | static bool |
279 | intel_find_pll_g4x_dp(const intel_limit_t *, struct drm_crtc *crtc, | |
280 | int target, int refclk, intel_clock_t *best_clock); | |
5eb08b69 ZW |
281 | static bool |
282 | intel_find_pll_igdng_dp(const intel_limit_t *, struct drm_crtc *crtc, | |
283 | int target, int refclk, intel_clock_t *best_clock); | |
a4fc5ed6 | 284 | |
e4b36699 | 285 | static const intel_limit_t intel_limits_i8xx_dvo = { |
79e53945 JB |
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 }, | |
d4906093 | 296 | .find_pll = intel_find_best_PLL, |
652c393a | 297 | .find_reduced_pll = intel_find_best_reduced_PLL, |
e4b36699 KP |
298 | }; |
299 | ||
300 | static const intel_limit_t intel_limits_i8xx_lvds = { | |
79e53945 JB |
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 }, | |
d4906093 | 311 | .find_pll = intel_find_best_PLL, |
652c393a | 312 | .find_reduced_pll = intel_find_best_reduced_PLL, |
e4b36699 KP |
313 | }; |
314 | ||
315 | static const intel_limit_t intel_limits_i9xx_sdvo = { | |
79e53945 JB |
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 }, | |
d4906093 | 326 | .find_pll = intel_find_best_PLL, |
652c393a | 327 | .find_reduced_pll = intel_find_best_reduced_PLL, |
e4b36699 KP |
328 | }; |
329 | ||
330 | static const intel_limit_t intel_limits_i9xx_lvds = { | |
79e53945 JB |
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. | |
341 | */ | |
342 | .p2 = { .dot_limit = I9XX_P2_LVDS_SLOW_LIMIT, | |
343 | .p2_slow = I9XX_P2_LVDS_SLOW, .p2_fast = I9XX_P2_LVDS_FAST }, | |
d4906093 | 344 | .find_pll = intel_find_best_PLL, |
652c393a | 345 | .find_reduced_pll = intel_find_best_reduced_PLL, |
e4b36699 KP |
346 | }; |
347 | ||
044c7c41 | 348 | /* below parameter and function is for G4X Chipset Family*/ |
e4b36699 | 349 | static const intel_limit_t intel_limits_g4x_sdvo = { |
044c7c41 ML |
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 | |
361 | }, | |
d4906093 | 362 | .find_pll = intel_g4x_find_best_PLL, |
652c393a | 363 | .find_reduced_pll = intel_g4x_find_best_PLL, |
e4b36699 KP |
364 | }; |
365 | ||
366 | static const intel_limit_t intel_limits_g4x_hdmi = { | |
044c7c41 ML |
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 | |
378 | }, | |
d4906093 | 379 | .find_pll = intel_g4x_find_best_PLL, |
652c393a | 380 | .find_reduced_pll = intel_g4x_find_best_PLL, |
e4b36699 KP |
381 | }; |
382 | ||
383 | static const intel_limit_t intel_limits_g4x_single_channel_lvds = { | |
044c7c41 ML |
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 | |
403 | }, | |
d4906093 | 404 | .find_pll = intel_g4x_find_best_PLL, |
652c393a | 405 | .find_reduced_pll = intel_g4x_find_best_PLL, |
e4b36699 KP |
406 | }; |
407 | ||
408 | static const intel_limit_t intel_limits_g4x_dual_channel_lvds = { | |
044c7c41 ML |
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 | |
428 | }, | |
d4906093 | 429 | .find_pll = intel_g4x_find_best_PLL, |
652c393a | 430 | .find_reduced_pll = intel_g4x_find_best_PLL, |
e4b36699 KP |
431 | }; |
432 | ||
433 | static const intel_limit_t intel_limits_g4x_display_port = { | |
a4fc5ed6 KP |
434 | .dot = { .min = G4X_DOT_DISPLAY_PORT_MIN, |
435 | .max = G4X_DOT_DISPLAY_PORT_MAX }, | |
436 | .vco = { .min = G4X_VCO_MIN, | |
437 | .max = G4X_VCO_MAX}, | |
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, | |
e4b36699 KP |
454 | }; |
455 | ||
456 | static const intel_limit_t intel_limits_igd_sdvo = { | |
2177832f SL |
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 }, | |
6115707b | 467 | .find_pll = intel_find_best_PLL, |
652c393a | 468 | .find_reduced_pll = intel_find_best_reduced_PLL, |
e4b36699 KP |
469 | }; |
470 | ||
471 | static const intel_limit_t intel_limits_igd_lvds = { | |
2177832f SL |
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 }, | |
6115707b | 483 | .find_pll = intel_find_best_PLL, |
652c393a | 484 | .find_reduced_pll = intel_find_best_reduced_PLL, |
e4b36699 KP |
485 | }; |
486 | ||
487 | static const intel_limit_t intel_limits_igdng_sdvo = { | |
2c07245f ZW |
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, | |
e4b36699 KP |
500 | }; |
501 | ||
502 | static const intel_limit_t intel_limits_igdng_lvds = { | |
2c07245f ZW |
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, | |
79e53945 JB |
515 | }; |
516 | ||
2c07245f ZW |
517 | static const intel_limit_t *intel_igdng_limit(struct drm_crtc *crtc) |
518 | { | |
519 | const intel_limit_t *limit; | |
520 | if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) | |
e4b36699 | 521 | limit = &intel_limits_igdng_lvds; |
2c07245f | 522 | else |
e4b36699 | 523 | limit = &intel_limits_igdng_sdvo; |
2c07245f ZW |
524 | |
525 | return limit; | |
526 | } | |
527 | ||
044c7c41 ML |
528 | static const intel_limit_t *intel_g4x_limit(struct drm_crtc *crtc) |
529 | { | |
530 | struct drm_device *dev = crtc->dev; | |
531 | struct drm_i915_private *dev_priv = dev->dev_private; | |
532 | const intel_limit_t *limit; | |
533 | ||
534 | if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) { | |
535 | if ((I915_READ(LVDS) & LVDS_CLKB_POWER_MASK) == | |
536 | LVDS_CLKB_POWER_UP) | |
537 | /* LVDS with dual channel */ | |
e4b36699 | 538 | limit = &intel_limits_g4x_dual_channel_lvds; |
044c7c41 ML |
539 | else |
540 | /* LVDS with dual channel */ | |
e4b36699 | 541 | limit = &intel_limits_g4x_single_channel_lvds; |
044c7c41 ML |
542 | } else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI) || |
543 | intel_pipe_has_type(crtc, INTEL_OUTPUT_ANALOG)) { | |
e4b36699 | 544 | limit = &intel_limits_g4x_hdmi; |
044c7c41 | 545 | } else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_SDVO)) { |
e4b36699 | 546 | limit = &intel_limits_g4x_sdvo; |
a4fc5ed6 | 547 | } else if (intel_pipe_has_type (crtc, INTEL_OUTPUT_DISPLAYPORT)) { |
e4b36699 | 548 | limit = &intel_limits_g4x_display_port; |
044c7c41 | 549 | } else /* The option is for other outputs */ |
e4b36699 | 550 | limit = &intel_limits_i9xx_sdvo; |
044c7c41 ML |
551 | |
552 | return limit; | |
553 | } | |
554 | ||
79e53945 JB |
555 | static const intel_limit_t *intel_limit(struct drm_crtc *crtc) |
556 | { | |
557 | struct drm_device *dev = crtc->dev; | |
558 | const intel_limit_t *limit; | |
559 | ||
2c07245f ZW |
560 | if (IS_IGDNG(dev)) |
561 | limit = intel_igdng_limit(crtc); | |
562 | else if (IS_G4X(dev)) { | |
044c7c41 | 563 | limit = intel_g4x_limit(crtc); |
2177832f | 564 | } else if (IS_I9XX(dev) && !IS_IGD(dev)) { |
79e53945 | 565 | if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) |
e4b36699 | 566 | limit = &intel_limits_i9xx_lvds; |
79e53945 | 567 | else |
e4b36699 | 568 | limit = &intel_limits_i9xx_sdvo; |
2177832f SL |
569 | } else if (IS_IGD(dev)) { |
570 | if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) | |
e4b36699 | 571 | limit = &intel_limits_igd_lvds; |
2177832f | 572 | else |
e4b36699 | 573 | limit = &intel_limits_igd_sdvo; |
79e53945 JB |
574 | } else { |
575 | if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) | |
e4b36699 | 576 | limit = &intel_limits_i8xx_lvds; |
79e53945 | 577 | else |
e4b36699 | 578 | limit = &intel_limits_i8xx_dvo; |
79e53945 JB |
579 | } |
580 | return limit; | |
581 | } | |
582 | ||
2177832f SL |
583 | /* m1 is reserved as 0 in IGD, n is a ring counter */ |
584 | static void igd_clock(int refclk, intel_clock_t *clock) | |
79e53945 | 585 | { |
2177832f SL |
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; | |
590 | } | |
591 | ||
592 | static void intel_clock(struct drm_device *dev, int refclk, intel_clock_t *clock) | |
593 | { | |
594 | if (IS_IGD(dev)) { | |
595 | igd_clock(refclk, clock); | |
596 | return; | |
597 | } | |
79e53945 JB |
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; | |
602 | } | |
603 | ||
79e53945 JB |
604 | /** |
605 | * Returns whether any output on the specified pipe is of the specified type | |
606 | */ | |
607 | bool intel_pipe_has_type (struct drm_crtc *crtc, int type) | |
608 | { | |
609 | struct drm_device *dev = crtc->dev; | |
610 | struct drm_mode_config *mode_config = &dev->mode_config; | |
611 | struct drm_connector *l_entry; | |
612 | ||
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) | |
618 | return true; | |
619 | } | |
620 | } | |
621 | return false; | |
622 | } | |
623 | ||
32f9d658 ZW |
624 | struct drm_connector * |
625 | intel_pipe_get_output (struct drm_crtc *crtc) | |
626 | { | |
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; | |
630 | ||
631 | list_for_each_entry(l_entry, &mode_config->connector_list, head) { | |
632 | if (l_entry->encoder && | |
633 | l_entry->encoder->crtc == crtc) { | |
634 | ret = l_entry; | |
635 | break; | |
636 | } | |
637 | } | |
638 | return ret; | |
639 | } | |
640 | ||
7c04d1d9 | 641 | #define INTELPllInvalid(s) do { /* DRM_DEBUG(s); */ return false; } while (0) |
79e53945 JB |
642 | /** |
643 | * Returns whether the given set of divisors are valid for a given refclk with | |
644 | * the given connectors. | |
645 | */ | |
646 | ||
647 | static bool intel_PLL_is_valid(struct drm_crtc *crtc, intel_clock_t *clock) | |
648 | { | |
649 | const intel_limit_t *limit = intel_limit (crtc); | |
2177832f | 650 | struct drm_device *dev = crtc->dev; |
79e53945 JB |
651 | |
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"); | |
2177832f | 660 | if (clock->m1 <= clock->m2 && !IS_IGD(dev)) |
79e53945 JB |
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. | |
670 | */ | |
671 | if (clock->dot < limit->dot.min || limit->dot.max < clock->dot) | |
672 | INTELPllInvalid ("dot out of range\n"); | |
673 | ||
674 | return true; | |
675 | } | |
676 | ||
d4906093 ML |
677 | static bool |
678 | intel_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc, | |
679 | int target, int refclk, intel_clock_t *best_clock) | |
680 | ||
79e53945 JB |
681 | { |
682 | struct drm_device *dev = crtc->dev; | |
683 | struct drm_i915_private *dev_priv = dev->dev_private; | |
684 | intel_clock_t clock; | |
79e53945 JB |
685 | int err = target; |
686 | ||
bc5e5718 | 687 | if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) && |
832cc28d | 688 | (I915_READ(LVDS)) != 0) { |
79e53945 JB |
689 | /* |
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 | |
693 | * even can. | |
694 | */ | |
695 | if ((I915_READ(LVDS) & LVDS_CLKB_POWER_MASK) == | |
696 | LVDS_CLKB_POWER_UP) | |
697 | clock.p2 = limit->p2.p2_fast; | |
698 | else | |
699 | clock.p2 = limit->p2.p2_slow; | |
700 | } else { | |
701 | if (target < limit->p2.dot_limit) | |
702 | clock.p2 = limit->p2.p2_slow; | |
703 | else | |
704 | clock.p2 = limit->p2.p2_fast; | |
705 | } | |
706 | ||
707 | memset (best_clock, 0, sizeof (*best_clock)); | |
708 | ||
42158660 ZY |
709 | for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max; |
710 | clock.m1++) { | |
711 | for (clock.m2 = limit->m2.min; | |
712 | clock.m2 <= limit->m2.max; clock.m2++) { | |
713 | /* m1 is always 0 in IGD */ | |
714 | if (clock.m2 >= clock.m1 && !IS_IGD(dev)) | |
715 | break; | |
716 | for (clock.n = limit->n.min; | |
717 | clock.n <= limit->n.max; clock.n++) { | |
718 | for (clock.p1 = limit->p1.min; | |
719 | clock.p1 <= limit->p1.max; clock.p1++) { | |
79e53945 JB |
720 | int this_err; |
721 | ||
2177832f | 722 | intel_clock(dev, refclk, &clock); |
79e53945 JB |
723 | |
724 | if (!intel_PLL_is_valid(crtc, &clock)) | |
725 | continue; | |
726 | ||
727 | this_err = abs(clock.dot - target); | |
728 | if (this_err < err) { | |
729 | *best_clock = clock; | |
730 | err = this_err; | |
731 | } | |
732 | } | |
733 | } | |
734 | } | |
735 | } | |
736 | ||
737 | return (err != target); | |
738 | } | |
739 | ||
652c393a JB |
740 | |
741 | static bool | |
742 | intel_find_best_reduced_PLL(const intel_limit_t *limit, struct drm_crtc *crtc, | |
743 | int target, int refclk, intel_clock_t *best_clock) | |
744 | ||
745 | { | |
746 | struct drm_device *dev = crtc->dev; | |
747 | intel_clock_t clock; | |
748 | int err = target; | |
749 | bool found = false; | |
750 | ||
751 | memcpy(&clock, best_clock, sizeof(intel_clock_t)); | |
752 | ||
753 | for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max; clock.m1++) { | |
754 | for (clock.m2 = limit->m2.min; clock.m2 <= limit->m2.max; clock.m2++) { | |
755 | /* m1 is always 0 in IGD */ | |
756 | if (clock.m2 >= clock.m1 && !IS_IGD(dev)) | |
757 | break; | |
758 | for (clock.n = limit->n.min; clock.n <= limit->n.max; | |
759 | clock.n++) { | |
760 | int this_err; | |
761 | ||
762 | intel_clock(dev, refclk, &clock); | |
763 | ||
764 | if (!intel_PLL_is_valid(crtc, &clock)) | |
765 | continue; | |
766 | ||
767 | this_err = abs(clock.dot - target); | |
768 | if (this_err < err) { | |
769 | *best_clock = clock; | |
770 | err = this_err; | |
771 | found = true; | |
772 | } | |
773 | } | |
774 | } | |
775 | } | |
776 | ||
777 | return found; | |
778 | } | |
779 | ||
d4906093 ML |
780 | static bool |
781 | intel_g4x_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc, | |
782 | int target, int refclk, intel_clock_t *best_clock) | |
783 | { | |
784 | struct drm_device *dev = crtc->dev; | |
785 | struct drm_i915_private *dev_priv = dev->dev_private; | |
786 | intel_clock_t clock; | |
787 | int max_n; | |
788 | bool found; | |
789 | /* approximately equals target * 0.00488 */ | |
790 | int err_most = (target >> 8) + (target >> 10); | |
791 | found = false; | |
792 | ||
793 | if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) { | |
794 | if ((I915_READ(LVDS) & LVDS_CLKB_POWER_MASK) == | |
795 | LVDS_CLKB_POWER_UP) | |
796 | clock.p2 = limit->p2.p2_fast; | |
797 | else | |
798 | clock.p2 = limit->p2.p2_slow; | |
799 | } else { | |
800 | if (target < limit->p2.dot_limit) | |
801 | clock.p2 = limit->p2.p2_slow; | |
802 | else | |
803 | clock.p2 = limit->p2.p2_fast; | |
804 | } | |
805 | ||
806 | memset(best_clock, 0, sizeof(*best_clock)); | |
807 | max_n = limit->n.max; | |
808 | /* based on hardware requriment prefer smaller n to precision */ | |
809 | for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) { | |
652c393a | 810 | /* based on hardware requirment prefere larger m1,m2 */ |
d4906093 ML |
811 | for (clock.m1 = limit->m1.max; |
812 | clock.m1 >= limit->m1.min; clock.m1--) { | |
813 | for (clock.m2 = limit->m2.max; | |
814 | clock.m2 >= limit->m2.min; clock.m2--) { | |
815 | for (clock.p1 = limit->p1.max; | |
816 | clock.p1 >= limit->p1.min; clock.p1--) { | |
817 | int this_err; | |
818 | ||
2177832f | 819 | intel_clock(dev, refclk, &clock); |
d4906093 ML |
820 | if (!intel_PLL_is_valid(crtc, &clock)) |
821 | continue; | |
822 | this_err = abs(clock.dot - target) ; | |
823 | if (this_err < err_most) { | |
824 | *best_clock = clock; | |
825 | err_most = this_err; | |
826 | max_n = clock.n; | |
827 | found = true; | |
828 | } | |
829 | } | |
830 | } | |
831 | } | |
832 | } | |
2c07245f ZW |
833 | return found; |
834 | } | |
835 | ||
5eb08b69 ZW |
836 | static bool |
837 | intel_find_pll_igdng_dp(const intel_limit_t *limit, struct drm_crtc *crtc, | |
838 | int target, int refclk, intel_clock_t *best_clock) | |
839 | { | |
840 | struct drm_device *dev = crtc->dev; | |
841 | intel_clock_t clock; | |
842 | if (target < 200000) { | |
843 | clock.n = 1; | |
844 | clock.p1 = 2; | |
845 | clock.p2 = 10; | |
846 | clock.m1 = 12; | |
847 | clock.m2 = 9; | |
848 | } else { | |
849 | clock.n = 2; | |
850 | clock.p1 = 1; | |
851 | clock.p2 = 10; | |
852 | clock.m1 = 14; | |
853 | clock.m2 = 8; | |
854 | } | |
855 | intel_clock(dev, refclk, &clock); | |
856 | memcpy(best_clock, &clock, sizeof(intel_clock_t)); | |
857 | return true; | |
858 | } | |
859 | ||
2c07245f ZW |
860 | static bool |
861 | intel_igdng_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc, | |
862 | int target, int refclk, intel_clock_t *best_clock) | |
863 | { | |
864 | struct drm_device *dev = crtc->dev; | |
865 | struct drm_i915_private *dev_priv = dev->dev_private; | |
866 | intel_clock_t clock; | |
2c07245f | 867 | int err_most = 47; |
4bfe6b68 | 868 | int err_min = 10000; |
2c07245f | 869 | |
32f9d658 ZW |
870 | /* eDP has only 2 clock choice, no n/m/p setting */ |
871 | if (HAS_eDP) | |
872 | return true; | |
873 | ||
5eb08b69 ZW |
874 | if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT)) |
875 | return intel_find_pll_igdng_dp(limit, crtc, target, | |
876 | refclk, best_clock); | |
877 | ||
2c07245f | 878 | if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) { |
b09aea7f | 879 | if ((I915_READ(PCH_LVDS) & LVDS_CLKB_POWER_MASK) == |
2c07245f ZW |
880 | LVDS_CLKB_POWER_UP) |
881 | clock.p2 = limit->p2.p2_fast; | |
882 | else | |
883 | clock.p2 = limit->p2.p2_slow; | |
884 | } else { | |
885 | if (target < limit->p2.dot_limit) | |
886 | clock.p2 = limit->p2.p2_slow; | |
887 | else | |
888 | clock.p2 = limit->p2.p2_fast; | |
889 | } | |
890 | ||
891 | memset(best_clock, 0, sizeof(*best_clock)); | |
652c393a JB |
892 | for (clock.p1 = limit->p1.max; clock.p1 >= limit->p1.min; clock.p1--) { |
893 | /* based on hardware requriment prefer smaller n to precision */ | |
4bfe6b68 | 894 | for (clock.n = limit->n.min; clock.n <= limit->n.max; clock.n++) { |
652c393a JB |
895 | /* based on hardware requirment prefere larger m1,m2 */ |
896 | for (clock.m1 = limit->m1.max; | |
897 | clock.m1 >= limit->m1.min; clock.m1--) { | |
898 | for (clock.m2 = limit->m2.max; | |
899 | clock.m2 >= limit->m2.min; clock.m2--) { | |
2c07245f | 900 | int this_err; |
d4906093 | 901 | |
2c07245f ZW |
902 | intel_clock(dev, refclk, &clock); |
903 | if (!intel_PLL_is_valid(crtc, &clock)) | |
904 | continue; | |
905 | this_err = abs((10000 - (target*10000/clock.dot))); | |
906 | if (this_err < err_most) { | |
907 | *best_clock = clock; | |
2c07245f ZW |
908 | /* found on first matching */ |
909 | goto out; | |
4bfe6b68 ZW |
910 | } else if (this_err < err_min) { |
911 | *best_clock = clock; | |
912 | err_min = this_err; | |
2c07245f ZW |
913 | } |
914 | } | |
915 | } | |
916 | } | |
917 | } | |
918 | out: | |
4bfe6b68 | 919 | return true; |
d4906093 ML |
920 | } |
921 | ||
a4fc5ed6 KP |
922 | /* DisplayPort has only two frequencies, 162MHz and 270MHz */ |
923 | static bool | |
924 | intel_find_pll_g4x_dp(const intel_limit_t *limit, struct drm_crtc *crtc, | |
925 | int target, int refclk, intel_clock_t *best_clock) | |
926 | { | |
927 | intel_clock_t clock; | |
928 | if (target < 200000) { | |
a4fc5ed6 KP |
929 | clock.p1 = 2; |
930 | clock.p2 = 10; | |
b3d25495 KP |
931 | clock.n = 2; |
932 | clock.m1 = 23; | |
933 | clock.m2 = 8; | |
a4fc5ed6 | 934 | } else { |
a4fc5ed6 KP |
935 | clock.p1 = 1; |
936 | clock.p2 = 10; | |
b3d25495 KP |
937 | clock.n = 1; |
938 | clock.m1 = 14; | |
939 | clock.m2 = 2; | |
a4fc5ed6 | 940 | } |
b3d25495 KP |
941 | clock.m = 5 * (clock.m1 + 2) + (clock.m2 + 2); |
942 | clock.p = (clock.p1 * clock.p2); | |
943 | clock.dot = 96000 * clock.m / (clock.n + 2) / clock.p; | |
fe798b97 | 944 | clock.vco = 0; |
a4fc5ed6 KP |
945 | memcpy(best_clock, &clock, sizeof(intel_clock_t)); |
946 | return true; | |
947 | } | |
948 | ||
79e53945 JB |
949 | void |
950 | intel_wait_for_vblank(struct drm_device *dev) | |
951 | { | |
952 | /* Wait for 20ms, i.e. one cycle at 50hz. */ | |
311089d3 | 953 | msleep(20); |
79e53945 JB |
954 | } |
955 | ||
80824003 JB |
956 | /* Parameters have changed, update FBC info */ |
957 | static void i8xx_enable_fbc(struct drm_crtc *crtc, unsigned long interval) | |
958 | { | |
959 | struct drm_device *dev = crtc->dev; | |
960 | struct drm_i915_private *dev_priv = dev->dev_private; | |
961 | struct drm_framebuffer *fb = crtc->fb; | |
962 | struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb); | |
963 | struct drm_i915_gem_object *obj_priv = intel_fb->obj->driver_private; | |
964 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
965 | int plane, i; | |
966 | u32 fbc_ctl, fbc_ctl2; | |
967 | ||
968 | dev_priv->cfb_pitch = dev_priv->cfb_size / FBC_LL_SIZE; | |
969 | ||
970 | if (fb->pitch < dev_priv->cfb_pitch) | |
971 | dev_priv->cfb_pitch = fb->pitch; | |
972 | ||
973 | /* FBC_CTL wants 64B units */ | |
974 | dev_priv->cfb_pitch = (dev_priv->cfb_pitch / 64) - 1; | |
975 | dev_priv->cfb_fence = obj_priv->fence_reg; | |
976 | dev_priv->cfb_plane = intel_crtc->plane; | |
977 | plane = dev_priv->cfb_plane == 0 ? FBC_CTL_PLANEA : FBC_CTL_PLANEB; | |
978 | ||
979 | /* Clear old tags */ | |
980 | for (i = 0; i < (FBC_LL_SIZE / 32) + 1; i++) | |
981 | I915_WRITE(FBC_TAG + (i * 4), 0); | |
982 | ||
983 | /* Set it up... */ | |
984 | fbc_ctl2 = FBC_CTL_FENCE_DBL | FBC_CTL_IDLE_IMM | plane; | |
985 | if (obj_priv->tiling_mode != I915_TILING_NONE) | |
986 | fbc_ctl2 |= FBC_CTL_CPU_FENCE; | |
987 | I915_WRITE(FBC_CONTROL2, fbc_ctl2); | |
988 | I915_WRITE(FBC_FENCE_OFF, crtc->y); | |
989 | ||
990 | /* enable it... */ | |
991 | fbc_ctl = FBC_CTL_EN | FBC_CTL_PERIODIC; | |
992 | fbc_ctl |= (dev_priv->cfb_pitch & 0xff) << FBC_CTL_STRIDE_SHIFT; | |
993 | fbc_ctl |= (interval & 0x2fff) << FBC_CTL_INTERVAL_SHIFT; | |
994 | if (obj_priv->tiling_mode != I915_TILING_NONE) | |
995 | fbc_ctl |= dev_priv->cfb_fence; | |
996 | I915_WRITE(FBC_CONTROL, fbc_ctl); | |
997 | ||
28c97730 | 998 | DRM_DEBUG_KMS("enabled FBC, pitch %ld, yoff %d, plane %d, ", |
80824003 JB |
999 | dev_priv->cfb_pitch, crtc->y, dev_priv->cfb_plane); |
1000 | } | |
1001 | ||
1002 | void i8xx_disable_fbc(struct drm_device *dev) | |
1003 | { | |
1004 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1005 | u32 fbc_ctl; | |
1006 | ||
c1a1cdc1 JB |
1007 | if (!I915_HAS_FBC(dev)) |
1008 | return; | |
1009 | ||
80824003 JB |
1010 | /* Disable compression */ |
1011 | fbc_ctl = I915_READ(FBC_CONTROL); | |
1012 | fbc_ctl &= ~FBC_CTL_EN; | |
1013 | I915_WRITE(FBC_CONTROL, fbc_ctl); | |
1014 | ||
1015 | /* Wait for compressing bit to clear */ | |
1016 | while (I915_READ(FBC_STATUS) & FBC_STAT_COMPRESSING) | |
1017 | ; /* nothing */ | |
1018 | ||
1019 | intel_wait_for_vblank(dev); | |
1020 | ||
28c97730 | 1021 | DRM_DEBUG_KMS("disabled FBC\n"); |
80824003 JB |
1022 | } |
1023 | ||
1024 | static bool i8xx_fbc_enabled(struct drm_crtc *crtc) | |
1025 | { | |
1026 | struct drm_device *dev = crtc->dev; | |
1027 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1028 | ||
1029 | return I915_READ(FBC_CONTROL) & FBC_CTL_EN; | |
1030 | } | |
1031 | ||
74dff282 JB |
1032 | static void g4x_enable_fbc(struct drm_crtc *crtc, unsigned long interval) |
1033 | { | |
1034 | struct drm_device *dev = crtc->dev; | |
1035 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1036 | struct drm_framebuffer *fb = crtc->fb; | |
1037 | struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb); | |
1038 | struct drm_i915_gem_object *obj_priv = intel_fb->obj->driver_private; | |
1039 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
1040 | int plane = (intel_crtc->plane == 0 ? DPFC_CTL_PLANEA : | |
1041 | DPFC_CTL_PLANEB); | |
1042 | unsigned long stall_watermark = 200; | |
1043 | u32 dpfc_ctl; | |
1044 | ||
1045 | dev_priv->cfb_pitch = (dev_priv->cfb_pitch / 64) - 1; | |
1046 | dev_priv->cfb_fence = obj_priv->fence_reg; | |
1047 | dev_priv->cfb_plane = intel_crtc->plane; | |
1048 | ||
1049 | dpfc_ctl = plane | DPFC_SR_EN | DPFC_CTL_LIMIT_1X; | |
1050 | if (obj_priv->tiling_mode != I915_TILING_NONE) { | |
1051 | dpfc_ctl |= DPFC_CTL_FENCE_EN | dev_priv->cfb_fence; | |
1052 | I915_WRITE(DPFC_CHICKEN, DPFC_HT_MODIFY); | |
1053 | } else { | |
1054 | I915_WRITE(DPFC_CHICKEN, ~DPFC_HT_MODIFY); | |
1055 | } | |
1056 | ||
1057 | I915_WRITE(DPFC_CONTROL, dpfc_ctl); | |
1058 | I915_WRITE(DPFC_RECOMP_CTL, DPFC_RECOMP_STALL_EN | | |
1059 | (stall_watermark << DPFC_RECOMP_STALL_WM_SHIFT) | | |
1060 | (interval << DPFC_RECOMP_TIMER_COUNT_SHIFT)); | |
1061 | I915_WRITE(DPFC_FENCE_YOFF, crtc->y); | |
1062 | ||
1063 | /* enable it... */ | |
1064 | I915_WRITE(DPFC_CONTROL, I915_READ(DPFC_CONTROL) | DPFC_CTL_EN); | |
1065 | ||
28c97730 | 1066 | DRM_DEBUG_KMS("enabled fbc on plane %d\n", intel_crtc->plane); |
74dff282 JB |
1067 | } |
1068 | ||
1069 | void g4x_disable_fbc(struct drm_device *dev) | |
1070 | { | |
1071 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1072 | u32 dpfc_ctl; | |
1073 | ||
1074 | /* Disable compression */ | |
1075 | dpfc_ctl = I915_READ(DPFC_CONTROL); | |
1076 | dpfc_ctl &= ~DPFC_CTL_EN; | |
1077 | I915_WRITE(DPFC_CONTROL, dpfc_ctl); | |
1078 | intel_wait_for_vblank(dev); | |
1079 | ||
28c97730 | 1080 | DRM_DEBUG_KMS("disabled FBC\n"); |
74dff282 JB |
1081 | } |
1082 | ||
1083 | static bool g4x_fbc_enabled(struct drm_crtc *crtc) | |
1084 | { | |
1085 | struct drm_device *dev = crtc->dev; | |
1086 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1087 | ||
1088 | return I915_READ(DPFC_CONTROL) & DPFC_CTL_EN; | |
1089 | } | |
1090 | ||
80824003 JB |
1091 | /** |
1092 | * intel_update_fbc - enable/disable FBC as needed | |
1093 | * @crtc: CRTC to point the compressor at | |
1094 | * @mode: mode in use | |
1095 | * | |
1096 | * Set up the framebuffer compression hardware at mode set time. We | |
1097 | * enable it if possible: | |
1098 | * - plane A only (on pre-965) | |
1099 | * - no pixel mulitply/line duplication | |
1100 | * - no alpha buffer discard | |
1101 | * - no dual wide | |
1102 | * - framebuffer <= 2048 in width, 1536 in height | |
1103 | * | |
1104 | * We can't assume that any compression will take place (worst case), | |
1105 | * so the compressed buffer has to be the same size as the uncompressed | |
1106 | * one. It also must reside (along with the line length buffer) in | |
1107 | * stolen memory. | |
1108 | * | |
1109 | * We need to enable/disable FBC on a global basis. | |
1110 | */ | |
1111 | static void intel_update_fbc(struct drm_crtc *crtc, | |
1112 | struct drm_display_mode *mode) | |
1113 | { | |
1114 | struct drm_device *dev = crtc->dev; | |
1115 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1116 | struct drm_framebuffer *fb = crtc->fb; | |
1117 | struct intel_framebuffer *intel_fb; | |
1118 | struct drm_i915_gem_object *obj_priv; | |
1119 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
1120 | int plane = intel_crtc->plane; | |
1121 | ||
1122 | if (!i915_powersave) | |
1123 | return; | |
1124 | ||
e70236a8 JB |
1125 | if (!dev_priv->display.fbc_enabled || |
1126 | !dev_priv->display.enable_fbc || | |
1127 | !dev_priv->display.disable_fbc) | |
1128 | return; | |
1129 | ||
80824003 JB |
1130 | if (!crtc->fb) |
1131 | return; | |
1132 | ||
1133 | intel_fb = to_intel_framebuffer(fb); | |
1134 | obj_priv = intel_fb->obj->driver_private; | |
1135 | ||
1136 | /* | |
1137 | * If FBC is already on, we just have to verify that we can | |
1138 | * keep it that way... | |
1139 | * Need to disable if: | |
1140 | * - changing FBC params (stride, fence, mode) | |
1141 | * - new fb is too large to fit in compressed buffer | |
1142 | * - going to an unsupported config (interlace, pixel multiply, etc.) | |
1143 | */ | |
1144 | if (intel_fb->obj->size > dev_priv->cfb_size) { | |
28c97730 ZY |
1145 | DRM_DEBUG_KMS("framebuffer too large, disabling " |
1146 | "compression\n"); | |
80824003 JB |
1147 | goto out_disable; |
1148 | } | |
1149 | if ((mode->flags & DRM_MODE_FLAG_INTERLACE) || | |
1150 | (mode->flags & DRM_MODE_FLAG_DBLSCAN)) { | |
28c97730 ZY |
1151 | DRM_DEBUG_KMS("mode incompatible with compression, " |
1152 | "disabling\n"); | |
80824003 JB |
1153 | goto out_disable; |
1154 | } | |
1155 | if ((mode->hdisplay > 2048) || | |
1156 | (mode->vdisplay > 1536)) { | |
28c97730 | 1157 | DRM_DEBUG_KMS("mode too large for compression, disabling\n"); |
80824003 JB |
1158 | goto out_disable; |
1159 | } | |
74dff282 | 1160 | if ((IS_I915GM(dev) || IS_I945GM(dev)) && plane != 0) { |
28c97730 | 1161 | DRM_DEBUG_KMS("plane not 0, disabling compression\n"); |
80824003 JB |
1162 | goto out_disable; |
1163 | } | |
1164 | if (obj_priv->tiling_mode != I915_TILING_X) { | |
28c97730 | 1165 | DRM_DEBUG_KMS("framebuffer not tiled, disabling compression\n"); |
80824003 JB |
1166 | goto out_disable; |
1167 | } | |
1168 | ||
e70236a8 | 1169 | if (dev_priv->display.fbc_enabled(crtc)) { |
80824003 JB |
1170 | /* We can re-enable it in this case, but need to update pitch */ |
1171 | if (fb->pitch > dev_priv->cfb_pitch) | |
e70236a8 | 1172 | dev_priv->display.disable_fbc(dev); |
80824003 | 1173 | if (obj_priv->fence_reg != dev_priv->cfb_fence) |
e70236a8 | 1174 | dev_priv->display.disable_fbc(dev); |
80824003 | 1175 | if (plane != dev_priv->cfb_plane) |
e70236a8 | 1176 | dev_priv->display.disable_fbc(dev); |
80824003 JB |
1177 | } |
1178 | ||
e70236a8 | 1179 | if (!dev_priv->display.fbc_enabled(crtc)) { |
80824003 | 1180 | /* Now try to turn it back on if possible */ |
e70236a8 | 1181 | dev_priv->display.enable_fbc(crtc, 500); |
80824003 JB |
1182 | } |
1183 | ||
1184 | return; | |
1185 | ||
1186 | out_disable: | |
28c97730 | 1187 | DRM_DEBUG_KMS("unsupported config, disabling FBC\n"); |
80824003 | 1188 | /* Multiple disables should be harmless */ |
e70236a8 JB |
1189 | if (dev_priv->display.fbc_enabled(crtc)) |
1190 | dev_priv->display.disable_fbc(dev); | |
80824003 JB |
1191 | } |
1192 | ||
6b95a207 KH |
1193 | static int |
1194 | intel_pin_and_fence_fb_obj(struct drm_device *dev, struct drm_gem_object *obj) | |
1195 | { | |
1196 | struct drm_i915_gem_object *obj_priv = obj->driver_private; | |
1197 | u32 alignment; | |
1198 | int ret; | |
1199 | ||
1200 | switch (obj_priv->tiling_mode) { | |
1201 | case I915_TILING_NONE: | |
1202 | alignment = 64 * 1024; | |
1203 | break; | |
1204 | case I915_TILING_X: | |
1205 | /* pin() will align the object as required by fence */ | |
1206 | alignment = 0; | |
1207 | break; | |
1208 | case I915_TILING_Y: | |
1209 | /* FIXME: Is this true? */ | |
1210 | DRM_ERROR("Y tiled not allowed for scan out buffers\n"); | |
1211 | return -EINVAL; | |
1212 | default: | |
1213 | BUG(); | |
1214 | } | |
1215 | ||
1216 | alignment = 256 * 1024; | |
1217 | ret = i915_gem_object_pin(obj, alignment); | |
1218 | if (ret != 0) | |
1219 | return ret; | |
1220 | ||
1221 | /* Install a fence for tiled scan-out. Pre-i965 always needs a | |
1222 | * fence, whereas 965+ only requires a fence if using | |
1223 | * framebuffer compression. For simplicity, we always install | |
1224 | * a fence as the cost is not that onerous. | |
1225 | */ | |
1226 | if (obj_priv->fence_reg == I915_FENCE_REG_NONE && | |
1227 | obj_priv->tiling_mode != I915_TILING_NONE) { | |
1228 | ret = i915_gem_object_get_fence_reg(obj); | |
1229 | if (ret != 0) { | |
1230 | i915_gem_object_unpin(obj); | |
1231 | return ret; | |
1232 | } | |
1233 | } | |
1234 | ||
1235 | return 0; | |
1236 | } | |
1237 | ||
5c3b82e2 | 1238 | static int |
3c4fdcfb KH |
1239 | intel_pipe_set_base(struct drm_crtc *crtc, int x, int y, |
1240 | struct drm_framebuffer *old_fb) | |
79e53945 JB |
1241 | { |
1242 | struct drm_device *dev = crtc->dev; | |
1243 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1244 | struct drm_i915_master_private *master_priv; | |
1245 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
1246 | struct intel_framebuffer *intel_fb; | |
1247 | struct drm_i915_gem_object *obj_priv; | |
1248 | struct drm_gem_object *obj; | |
1249 | int pipe = intel_crtc->pipe; | |
80824003 | 1250 | int plane = intel_crtc->plane; |
79e53945 | 1251 | unsigned long Start, Offset; |
80824003 JB |
1252 | int dspbase = (plane == 0 ? DSPAADDR : DSPBADDR); |
1253 | int dspsurf = (plane == 0 ? DSPASURF : DSPBSURF); | |
1254 | int dspstride = (plane == 0) ? DSPASTRIDE : DSPBSTRIDE; | |
1255 | int dsptileoff = (plane == 0 ? DSPATILEOFF : DSPBTILEOFF); | |
1256 | int dspcntr_reg = (plane == 0) ? DSPACNTR : DSPBCNTR; | |
6b95a207 | 1257 | u32 dspcntr; |
5c3b82e2 | 1258 | int ret; |
79e53945 JB |
1259 | |
1260 | /* no fb bound */ | |
1261 | if (!crtc->fb) { | |
28c97730 | 1262 | DRM_DEBUG_KMS("No FB bound\n"); |
5c3b82e2 CW |
1263 | return 0; |
1264 | } | |
1265 | ||
80824003 | 1266 | switch (plane) { |
5c3b82e2 CW |
1267 | case 0: |
1268 | case 1: | |
1269 | break; | |
1270 | default: | |
80824003 | 1271 | DRM_ERROR("Can't update plane %d in SAREA\n", plane); |
5c3b82e2 | 1272 | return -EINVAL; |
79e53945 JB |
1273 | } |
1274 | ||
1275 | intel_fb = to_intel_framebuffer(crtc->fb); | |
79e53945 JB |
1276 | obj = intel_fb->obj; |
1277 | obj_priv = obj->driver_private; | |
1278 | ||
5c3b82e2 | 1279 | mutex_lock(&dev->struct_mutex); |
6b95a207 | 1280 | ret = intel_pin_and_fence_fb_obj(dev, obj); |
5c3b82e2 CW |
1281 | if (ret != 0) { |
1282 | mutex_unlock(&dev->struct_mutex); | |
1283 | return ret; | |
1284 | } | |
79e53945 | 1285 | |
8c4b8c3f | 1286 | ret = i915_gem_object_set_to_gtt_domain(obj, 1); |
5c3b82e2 | 1287 | if (ret != 0) { |
8c4b8c3f | 1288 | i915_gem_object_unpin(obj); |
5c3b82e2 CW |
1289 | mutex_unlock(&dev->struct_mutex); |
1290 | return ret; | |
1291 | } | |
79e53945 JB |
1292 | |
1293 | dspcntr = I915_READ(dspcntr_reg); | |
712531bf JB |
1294 | /* Mask out pixel format bits in case we change it */ |
1295 | dspcntr &= ~DISPPLANE_PIXFORMAT_MASK; | |
79e53945 JB |
1296 | switch (crtc->fb->bits_per_pixel) { |
1297 | case 8: | |
1298 | dspcntr |= DISPPLANE_8BPP; | |
1299 | break; | |
1300 | case 16: | |
1301 | if (crtc->fb->depth == 15) | |
1302 | dspcntr |= DISPPLANE_15_16BPP; | |
1303 | else | |
1304 | dspcntr |= DISPPLANE_16BPP; | |
1305 | break; | |
1306 | case 24: | |
1307 | case 32: | |
a4f45cf1 KH |
1308 | if (crtc->fb->depth == 30) |
1309 | dspcntr |= DISPPLANE_32BPP_30BIT_NO_ALPHA; | |
1310 | else | |
1311 | dspcntr |= DISPPLANE_32BPP_NO_ALPHA; | |
79e53945 JB |
1312 | break; |
1313 | default: | |
1314 | DRM_ERROR("Unknown color depth\n"); | |
8c4b8c3f | 1315 | i915_gem_object_unpin(obj); |
5c3b82e2 CW |
1316 | mutex_unlock(&dev->struct_mutex); |
1317 | return -EINVAL; | |
79e53945 | 1318 | } |
f544847f JB |
1319 | if (IS_I965G(dev)) { |
1320 | if (obj_priv->tiling_mode != I915_TILING_NONE) | |
1321 | dspcntr |= DISPPLANE_TILED; | |
1322 | else | |
1323 | dspcntr &= ~DISPPLANE_TILED; | |
1324 | } | |
1325 | ||
553bd149 ZW |
1326 | if (IS_IGDNG(dev)) |
1327 | /* must disable */ | |
1328 | dspcntr |= DISPPLANE_TRICKLE_FEED_DISABLE; | |
1329 | ||
79e53945 JB |
1330 | I915_WRITE(dspcntr_reg, dspcntr); |
1331 | ||
5c3b82e2 CW |
1332 | Start = obj_priv->gtt_offset; |
1333 | Offset = y * crtc->fb->pitch + x * (crtc->fb->bits_per_pixel / 8); | |
1334 | ||
28c97730 | 1335 | DRM_DEBUG_KMS("Writing base %08lX %08lX %d %d\n", Start, Offset, x, y); |
5c3b82e2 | 1336 | I915_WRITE(dspstride, crtc->fb->pitch); |
79e53945 JB |
1337 | if (IS_I965G(dev)) { |
1338 | I915_WRITE(dspbase, Offset); | |
1339 | I915_READ(dspbase); | |
1340 | I915_WRITE(dspsurf, Start); | |
1341 | I915_READ(dspsurf); | |
f544847f | 1342 | I915_WRITE(dsptileoff, (y << 16) | x); |
79e53945 JB |
1343 | } else { |
1344 | I915_WRITE(dspbase, Start + Offset); | |
1345 | I915_READ(dspbase); | |
1346 | } | |
1347 | ||
74dff282 | 1348 | if ((IS_I965G(dev) || plane == 0)) |
edb81956 JB |
1349 | intel_update_fbc(crtc, &crtc->mode); |
1350 | ||
3c4fdcfb KH |
1351 | intel_wait_for_vblank(dev); |
1352 | ||
1353 | if (old_fb) { | |
1354 | intel_fb = to_intel_framebuffer(old_fb); | |
652c393a | 1355 | obj_priv = intel_fb->obj->driver_private; |
3c4fdcfb KH |
1356 | i915_gem_object_unpin(intel_fb->obj); |
1357 | } | |
652c393a JB |
1358 | intel_increase_pllclock(crtc, true); |
1359 | ||
5c3b82e2 | 1360 | mutex_unlock(&dev->struct_mutex); |
79e53945 JB |
1361 | |
1362 | if (!dev->primary->master) | |
5c3b82e2 | 1363 | return 0; |
79e53945 JB |
1364 | |
1365 | master_priv = dev->primary->master->driver_priv; | |
1366 | if (!master_priv->sarea_priv) | |
5c3b82e2 | 1367 | return 0; |
79e53945 | 1368 | |
5c3b82e2 | 1369 | if (pipe) { |
79e53945 JB |
1370 | master_priv->sarea_priv->pipeB_x = x; |
1371 | master_priv->sarea_priv->pipeB_y = y; | |
5c3b82e2 CW |
1372 | } else { |
1373 | master_priv->sarea_priv->pipeA_x = x; | |
1374 | master_priv->sarea_priv->pipeA_y = y; | |
79e53945 | 1375 | } |
5c3b82e2 CW |
1376 | |
1377 | return 0; | |
79e53945 JB |
1378 | } |
1379 | ||
24f119c7 ZW |
1380 | /* Disable the VGA plane that we never use */ |
1381 | static void i915_disable_vga (struct drm_device *dev) | |
1382 | { | |
1383 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1384 | u8 sr1; | |
1385 | u32 vga_reg; | |
1386 | ||
1387 | if (IS_IGDNG(dev)) | |
1388 | vga_reg = CPU_VGACNTRL; | |
1389 | else | |
1390 | vga_reg = VGACNTRL; | |
1391 | ||
1392 | if (I915_READ(vga_reg) & VGA_DISP_DISABLE) | |
1393 | return; | |
1394 | ||
1395 | I915_WRITE8(VGA_SR_INDEX, 1); | |
1396 | sr1 = I915_READ8(VGA_SR_DATA); | |
1397 | I915_WRITE8(VGA_SR_DATA, sr1 | (1 << 5)); | |
1398 | udelay(100); | |
1399 | ||
1400 | I915_WRITE(vga_reg, VGA_DISP_DISABLE); | |
1401 | } | |
1402 | ||
32f9d658 ZW |
1403 | static void igdng_disable_pll_edp (struct drm_crtc *crtc) |
1404 | { | |
1405 | struct drm_device *dev = crtc->dev; | |
1406 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1407 | u32 dpa_ctl; | |
1408 | ||
28c97730 | 1409 | DRM_DEBUG_KMS("\n"); |
32f9d658 ZW |
1410 | dpa_ctl = I915_READ(DP_A); |
1411 | dpa_ctl &= ~DP_PLL_ENABLE; | |
1412 | I915_WRITE(DP_A, dpa_ctl); | |
1413 | } | |
1414 | ||
1415 | static void igdng_enable_pll_edp (struct drm_crtc *crtc) | |
1416 | { | |
1417 | struct drm_device *dev = crtc->dev; | |
1418 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1419 | u32 dpa_ctl; | |
1420 | ||
1421 | dpa_ctl = I915_READ(DP_A); | |
1422 | dpa_ctl |= DP_PLL_ENABLE; | |
1423 | I915_WRITE(DP_A, dpa_ctl); | |
1424 | udelay(200); | |
1425 | } | |
1426 | ||
1427 | ||
1428 | static void igdng_set_pll_edp (struct drm_crtc *crtc, int clock) | |
1429 | { | |
1430 | struct drm_device *dev = crtc->dev; | |
1431 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1432 | u32 dpa_ctl; | |
1433 | ||
28c97730 | 1434 | DRM_DEBUG_KMS("eDP PLL enable for clock %d\n", clock); |
32f9d658 ZW |
1435 | dpa_ctl = I915_READ(DP_A); |
1436 | dpa_ctl &= ~DP_PLL_FREQ_MASK; | |
1437 | ||
1438 | if (clock < 200000) { | |
1439 | u32 temp; | |
1440 | dpa_ctl |= DP_PLL_FREQ_160MHZ; | |
1441 | /* workaround for 160Mhz: | |
1442 | 1) program 0x4600c bits 15:0 = 0x8124 | |
1443 | 2) program 0x46010 bit 0 = 1 | |
1444 | 3) program 0x46034 bit 24 = 1 | |
1445 | 4) program 0x64000 bit 14 = 1 | |
1446 | */ | |
1447 | temp = I915_READ(0x4600c); | |
1448 | temp &= 0xffff0000; | |
1449 | I915_WRITE(0x4600c, temp | 0x8124); | |
1450 | ||
1451 | temp = I915_READ(0x46010); | |
1452 | I915_WRITE(0x46010, temp | 1); | |
1453 | ||
1454 | temp = I915_READ(0x46034); | |
1455 | I915_WRITE(0x46034, temp | (1 << 24)); | |
1456 | } else { | |
1457 | dpa_ctl |= DP_PLL_FREQ_270MHZ; | |
1458 | } | |
1459 | I915_WRITE(DP_A, dpa_ctl); | |
1460 | ||
1461 | udelay(500); | |
1462 | } | |
1463 | ||
2c07245f ZW |
1464 | static void igdng_crtc_dpms(struct drm_crtc *crtc, int mode) |
1465 | { | |
1466 | struct drm_device *dev = crtc->dev; | |
1467 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1468 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
1469 | int pipe = intel_crtc->pipe; | |
7662c8bd | 1470 | int plane = intel_crtc->plane; |
2c07245f ZW |
1471 | int pch_dpll_reg = (pipe == 0) ? PCH_DPLL_A : PCH_DPLL_B; |
1472 | int pipeconf_reg = (pipe == 0) ? PIPEACONF : PIPEBCONF; | |
1473 | int dspcntr_reg = (plane == 0) ? DSPACNTR : DSPBCNTR; | |
1474 | int dspbase_reg = (plane == 0) ? DSPAADDR : DSPBADDR; | |
1475 | int fdi_tx_reg = (pipe == 0) ? FDI_TXA_CTL : FDI_TXB_CTL; | |
1476 | int fdi_rx_reg = (pipe == 0) ? FDI_RXA_CTL : FDI_RXB_CTL; | |
1477 | int fdi_rx_iir_reg = (pipe == 0) ? FDI_RXA_IIR : FDI_RXB_IIR; | |
1478 | int fdi_rx_imr_reg = (pipe == 0) ? FDI_RXA_IMR : FDI_RXB_IMR; | |
1479 | int transconf_reg = (pipe == 0) ? TRANSACONF : TRANSBCONF; | |
1480 | int pf_ctl_reg = (pipe == 0) ? PFA_CTL_1 : PFB_CTL_1; | |
249c0e64 | 1481 | int pf_win_size = (pipe == 0) ? PFA_WIN_SZ : PFB_WIN_SZ; |
8dd81a38 | 1482 | int pf_win_pos = (pipe == 0) ? PFA_WIN_POS : PFB_WIN_POS; |
2c07245f ZW |
1483 | int cpu_htot_reg = (pipe == 0) ? HTOTAL_A : HTOTAL_B; |
1484 | int cpu_hblank_reg = (pipe == 0) ? HBLANK_A : HBLANK_B; | |
1485 | int cpu_hsync_reg = (pipe == 0) ? HSYNC_A : HSYNC_B; | |
1486 | int cpu_vtot_reg = (pipe == 0) ? VTOTAL_A : VTOTAL_B; | |
1487 | int cpu_vblank_reg = (pipe == 0) ? VBLANK_A : VBLANK_B; | |
1488 | int cpu_vsync_reg = (pipe == 0) ? VSYNC_A : VSYNC_B; | |
1489 | int trans_htot_reg = (pipe == 0) ? TRANS_HTOTAL_A : TRANS_HTOTAL_B; | |
1490 | int trans_hblank_reg = (pipe == 0) ? TRANS_HBLANK_A : TRANS_HBLANK_B; | |
1491 | int trans_hsync_reg = (pipe == 0) ? TRANS_HSYNC_A : TRANS_HSYNC_B; | |
1492 | int trans_vtot_reg = (pipe == 0) ? TRANS_VTOTAL_A : TRANS_VTOTAL_B; | |
1493 | int trans_vblank_reg = (pipe == 0) ? TRANS_VBLANK_A : TRANS_VBLANK_B; | |
1494 | int trans_vsync_reg = (pipe == 0) ? TRANS_VSYNC_A : TRANS_VSYNC_B; | |
1495 | u32 temp; | |
249c0e64 | 1496 | int tries = 5, j, n; |
79e53945 | 1497 | |
2c07245f ZW |
1498 | /* XXX: When our outputs are all unaware of DPMS modes other than off |
1499 | * and on, we should map those modes to DRM_MODE_DPMS_OFF in the CRTC. | |
1500 | */ | |
1501 | switch (mode) { | |
1502 | case DRM_MODE_DPMS_ON: | |
1503 | case DRM_MODE_DPMS_STANDBY: | |
1504 | case DRM_MODE_DPMS_SUSPEND: | |
28c97730 | 1505 | DRM_DEBUG_KMS("crtc %d dpms on\n", pipe); |
1b3c7a47 ZW |
1506 | |
1507 | if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) { | |
1508 | temp = I915_READ(PCH_LVDS); | |
1509 | if ((temp & LVDS_PORT_EN) == 0) { | |
1510 | I915_WRITE(PCH_LVDS, temp | LVDS_PORT_EN); | |
1511 | POSTING_READ(PCH_LVDS); | |
1512 | } | |
1513 | } | |
1514 | ||
32f9d658 ZW |
1515 | if (HAS_eDP) { |
1516 | /* enable eDP PLL */ | |
1517 | igdng_enable_pll_edp(crtc); | |
1518 | } else { | |
1519 | /* enable PCH DPLL */ | |
1520 | temp = I915_READ(pch_dpll_reg); | |
1521 | if ((temp & DPLL_VCO_ENABLE) == 0) { | |
1522 | I915_WRITE(pch_dpll_reg, temp | DPLL_VCO_ENABLE); | |
1523 | I915_READ(pch_dpll_reg); | |
1524 | } | |
2c07245f | 1525 | |
32f9d658 ZW |
1526 | /* enable PCH FDI RX PLL, wait warmup plus DMI latency */ |
1527 | temp = I915_READ(fdi_rx_reg); | |
1528 | I915_WRITE(fdi_rx_reg, temp | FDI_RX_PLL_ENABLE | | |
1529 | FDI_SEL_PCDCLK | | |
1530 | FDI_DP_PORT_WIDTH_X4); /* default 4 lanes */ | |
1531 | I915_READ(fdi_rx_reg); | |
1532 | udelay(200); | |
1533 | ||
1534 | /* Enable CPU FDI TX PLL, always on for IGDNG */ | |
1535 | temp = I915_READ(fdi_tx_reg); | |
1536 | if ((temp & FDI_TX_PLL_ENABLE) == 0) { | |
1537 | I915_WRITE(fdi_tx_reg, temp | FDI_TX_PLL_ENABLE); | |
1538 | I915_READ(fdi_tx_reg); | |
1539 | udelay(100); | |
1540 | } | |
2c07245f ZW |
1541 | } |
1542 | ||
8dd81a38 ZW |
1543 | /* Enable panel fitting for LVDS */ |
1544 | if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) { | |
1545 | temp = I915_READ(pf_ctl_reg); | |
b1f60b70 | 1546 | I915_WRITE(pf_ctl_reg, temp | PF_ENABLE | PF_FILTER_MED_3x3); |
8dd81a38 ZW |
1547 | |
1548 | /* currently full aspect */ | |
1549 | I915_WRITE(pf_win_pos, 0); | |
1550 | ||
1551 | I915_WRITE(pf_win_size, | |
1552 | (dev_priv->panel_fixed_mode->hdisplay << 16) | | |
1553 | (dev_priv->panel_fixed_mode->vdisplay)); | |
1554 | } | |
1555 | ||
2c07245f ZW |
1556 | /* Enable CPU pipe */ |
1557 | temp = I915_READ(pipeconf_reg); | |
1558 | if ((temp & PIPEACONF_ENABLE) == 0) { | |
1559 | I915_WRITE(pipeconf_reg, temp | PIPEACONF_ENABLE); | |
1560 | I915_READ(pipeconf_reg); | |
1561 | udelay(100); | |
1562 | } | |
1563 | ||
1564 | /* configure and enable CPU plane */ | |
1565 | temp = I915_READ(dspcntr_reg); | |
1566 | if ((temp & DISPLAY_PLANE_ENABLE) == 0) { | |
1567 | I915_WRITE(dspcntr_reg, temp | DISPLAY_PLANE_ENABLE); | |
1568 | /* Flush the plane changes */ | |
1569 | I915_WRITE(dspbase_reg, I915_READ(dspbase_reg)); | |
1570 | } | |
1571 | ||
32f9d658 ZW |
1572 | if (!HAS_eDP) { |
1573 | /* enable CPU FDI TX and PCH FDI RX */ | |
1574 | temp = I915_READ(fdi_tx_reg); | |
1575 | temp |= FDI_TX_ENABLE; | |
1576 | temp |= FDI_DP_PORT_WIDTH_X4; /* default */ | |
1577 | temp &= ~FDI_LINK_TRAIN_NONE; | |
1578 | temp |= FDI_LINK_TRAIN_PATTERN_1; | |
1579 | I915_WRITE(fdi_tx_reg, temp); | |
1580 | I915_READ(fdi_tx_reg); | |
2c07245f | 1581 | |
32f9d658 ZW |
1582 | temp = I915_READ(fdi_rx_reg); |
1583 | temp &= ~FDI_LINK_TRAIN_NONE; | |
1584 | temp |= FDI_LINK_TRAIN_PATTERN_1; | |
1585 | I915_WRITE(fdi_rx_reg, temp | FDI_RX_ENABLE); | |
1586 | I915_READ(fdi_rx_reg); | |
2c07245f | 1587 | |
32f9d658 | 1588 | udelay(150); |
2c07245f | 1589 | |
32f9d658 ZW |
1590 | /* Train FDI. */ |
1591 | /* umask FDI RX Interrupt symbol_lock and bit_lock bit | |
1592 | for train result */ | |
1593 | temp = I915_READ(fdi_rx_imr_reg); | |
1594 | temp &= ~FDI_RX_SYMBOL_LOCK; | |
1595 | temp &= ~FDI_RX_BIT_LOCK; | |
1596 | I915_WRITE(fdi_rx_imr_reg, temp); | |
1597 | I915_READ(fdi_rx_imr_reg); | |
1598 | udelay(150); | |
2c07245f | 1599 | |
32f9d658 | 1600 | temp = I915_READ(fdi_rx_iir_reg); |
28c97730 | 1601 | DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp); |
2c07245f | 1602 | |
32f9d658 ZW |
1603 | if ((temp & FDI_RX_BIT_LOCK) == 0) { |
1604 | for (j = 0; j < tries; j++) { | |
1605 | temp = I915_READ(fdi_rx_iir_reg); | |
28c97730 ZY |
1606 | DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", |
1607 | temp); | |
32f9d658 ZW |
1608 | if (temp & FDI_RX_BIT_LOCK) |
1609 | break; | |
1610 | udelay(200); | |
1611 | } | |
1612 | if (j != tries) | |
1613 | I915_WRITE(fdi_rx_iir_reg, | |
1614 | temp | FDI_RX_BIT_LOCK); | |
1615 | else | |
28c97730 | 1616 | DRM_DEBUG_KMS("train 1 fail\n"); |
32f9d658 | 1617 | } else { |
2c07245f ZW |
1618 | I915_WRITE(fdi_rx_iir_reg, |
1619 | temp | FDI_RX_BIT_LOCK); | |
28c97730 | 1620 | DRM_DEBUG_KMS("train 1 ok 2!\n"); |
32f9d658 ZW |
1621 | } |
1622 | temp = I915_READ(fdi_tx_reg); | |
1623 | temp &= ~FDI_LINK_TRAIN_NONE; | |
1624 | temp |= FDI_LINK_TRAIN_PATTERN_2; | |
1625 | I915_WRITE(fdi_tx_reg, temp); | |
1626 | ||
1627 | temp = I915_READ(fdi_rx_reg); | |
1628 | temp &= ~FDI_LINK_TRAIN_NONE; | |
1629 | temp |= FDI_LINK_TRAIN_PATTERN_2; | |
1630 | I915_WRITE(fdi_rx_reg, temp); | |
2c07245f | 1631 | |
32f9d658 | 1632 | udelay(150); |
2c07245f | 1633 | |
32f9d658 | 1634 | temp = I915_READ(fdi_rx_iir_reg); |
28c97730 | 1635 | DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp); |
2c07245f | 1636 | |
32f9d658 ZW |
1637 | if ((temp & FDI_RX_SYMBOL_LOCK) == 0) { |
1638 | for (j = 0; j < tries; j++) { | |
1639 | temp = I915_READ(fdi_rx_iir_reg); | |
28c97730 ZY |
1640 | DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", |
1641 | temp); | |
32f9d658 ZW |
1642 | if (temp & FDI_RX_SYMBOL_LOCK) |
1643 | break; | |
1644 | udelay(200); | |
1645 | } | |
1646 | if (j != tries) { | |
1647 | I915_WRITE(fdi_rx_iir_reg, | |
1648 | temp | FDI_RX_SYMBOL_LOCK); | |
28c97730 | 1649 | DRM_DEBUG_KMS("train 2 ok 1!\n"); |
32f9d658 | 1650 | } else |
28c97730 | 1651 | DRM_DEBUG_KMS("train 2 fail\n"); |
32f9d658 | 1652 | } else { |
2c07245f ZW |
1653 | I915_WRITE(fdi_rx_iir_reg, |
1654 | temp | FDI_RX_SYMBOL_LOCK); | |
28c97730 | 1655 | DRM_DEBUG_KMS("train 2 ok 2!\n"); |
32f9d658 | 1656 | } |
28c97730 | 1657 | DRM_DEBUG_KMS("train done\n"); |
2c07245f | 1658 | |
32f9d658 ZW |
1659 | /* set transcoder timing */ |
1660 | I915_WRITE(trans_htot_reg, I915_READ(cpu_htot_reg)); | |
1661 | I915_WRITE(trans_hblank_reg, I915_READ(cpu_hblank_reg)); | |
1662 | I915_WRITE(trans_hsync_reg, I915_READ(cpu_hsync_reg)); | |
2c07245f | 1663 | |
32f9d658 ZW |
1664 | I915_WRITE(trans_vtot_reg, I915_READ(cpu_vtot_reg)); |
1665 | I915_WRITE(trans_vblank_reg, I915_READ(cpu_vblank_reg)); | |
1666 | I915_WRITE(trans_vsync_reg, I915_READ(cpu_vsync_reg)); | |
2c07245f | 1667 | |
32f9d658 ZW |
1668 | /* enable PCH transcoder */ |
1669 | temp = I915_READ(transconf_reg); | |
1670 | I915_WRITE(transconf_reg, temp | TRANS_ENABLE); | |
1671 | I915_READ(transconf_reg); | |
2c07245f | 1672 | |
32f9d658 ZW |
1673 | while ((I915_READ(transconf_reg) & TRANS_STATE_ENABLE) == 0) |
1674 | ; | |
2c07245f | 1675 | |
32f9d658 | 1676 | /* enable normal */ |
2c07245f | 1677 | |
32f9d658 ZW |
1678 | temp = I915_READ(fdi_tx_reg); |
1679 | temp &= ~FDI_LINK_TRAIN_NONE; | |
1680 | I915_WRITE(fdi_tx_reg, temp | FDI_LINK_TRAIN_NONE | | |
1681 | FDI_TX_ENHANCE_FRAME_ENABLE); | |
1682 | I915_READ(fdi_tx_reg); | |
2c07245f | 1683 | |
32f9d658 ZW |
1684 | temp = I915_READ(fdi_rx_reg); |
1685 | temp &= ~FDI_LINK_TRAIN_NONE; | |
1686 | I915_WRITE(fdi_rx_reg, temp | FDI_LINK_TRAIN_NONE | | |
1687 | FDI_RX_ENHANCE_FRAME_ENABLE); | |
1688 | I915_READ(fdi_rx_reg); | |
2c07245f | 1689 | |
32f9d658 ZW |
1690 | /* wait one idle pattern time */ |
1691 | udelay(100); | |
1692 | ||
1693 | } | |
2c07245f ZW |
1694 | |
1695 | intel_crtc_load_lut(crtc); | |
1696 | ||
1697 | break; | |
1698 | case DRM_MODE_DPMS_OFF: | |
28c97730 | 1699 | DRM_DEBUG_KMS("crtc %d dpms off\n", pipe); |
2c07245f | 1700 | |
2c07245f ZW |
1701 | /* Disable display plane */ |
1702 | temp = I915_READ(dspcntr_reg); | |
1703 | if ((temp & DISPLAY_PLANE_ENABLE) != 0) { | |
1704 | I915_WRITE(dspcntr_reg, temp & ~DISPLAY_PLANE_ENABLE); | |
1705 | /* Flush the plane changes */ | |
1706 | I915_WRITE(dspbase_reg, I915_READ(dspbase_reg)); | |
1707 | I915_READ(dspbase_reg); | |
1708 | } | |
1709 | ||
1b3c7a47 ZW |
1710 | i915_disable_vga(dev); |
1711 | ||
2c07245f ZW |
1712 | /* disable cpu pipe, disable after all planes disabled */ |
1713 | temp = I915_READ(pipeconf_reg); | |
1714 | if ((temp & PIPEACONF_ENABLE) != 0) { | |
1715 | I915_WRITE(pipeconf_reg, temp & ~PIPEACONF_ENABLE); | |
1716 | I915_READ(pipeconf_reg); | |
249c0e64 | 1717 | n = 0; |
2c07245f | 1718 | /* wait for cpu pipe off, pipe state */ |
249c0e64 ZW |
1719 | while ((I915_READ(pipeconf_reg) & I965_PIPECONF_ACTIVE) != 0) { |
1720 | n++; | |
1721 | if (n < 60) { | |
1722 | udelay(500); | |
1723 | continue; | |
1724 | } else { | |
28c97730 ZY |
1725 | DRM_DEBUG_KMS("pipe %d off delay\n", |
1726 | pipe); | |
249c0e64 ZW |
1727 | break; |
1728 | } | |
1729 | } | |
2c07245f | 1730 | } else |
28c97730 | 1731 | DRM_DEBUG_KMS("crtc %d is disabled\n", pipe); |
2c07245f | 1732 | |
1b3c7a47 ZW |
1733 | udelay(100); |
1734 | ||
1735 | /* Disable PF */ | |
1736 | temp = I915_READ(pf_ctl_reg); | |
1737 | if ((temp & PF_ENABLE) != 0) { | |
1738 | I915_WRITE(pf_ctl_reg, temp & ~PF_ENABLE); | |
1739 | I915_READ(pf_ctl_reg); | |
32f9d658 | 1740 | } |
1b3c7a47 | 1741 | I915_WRITE(pf_win_size, 0); |
32f9d658 | 1742 | |
2c07245f ZW |
1743 | /* disable CPU FDI tx and PCH FDI rx */ |
1744 | temp = I915_READ(fdi_tx_reg); | |
1745 | I915_WRITE(fdi_tx_reg, temp & ~FDI_TX_ENABLE); | |
1746 | I915_READ(fdi_tx_reg); | |
1747 | ||
1748 | temp = I915_READ(fdi_rx_reg); | |
1749 | I915_WRITE(fdi_rx_reg, temp & ~FDI_RX_ENABLE); | |
1750 | I915_READ(fdi_rx_reg); | |
1751 | ||
249c0e64 ZW |
1752 | udelay(100); |
1753 | ||
2c07245f ZW |
1754 | /* still set train pattern 1 */ |
1755 | temp = I915_READ(fdi_tx_reg); | |
1756 | temp &= ~FDI_LINK_TRAIN_NONE; | |
1757 | temp |= FDI_LINK_TRAIN_PATTERN_1; | |
1758 | I915_WRITE(fdi_tx_reg, temp); | |
1759 | ||
1760 | temp = I915_READ(fdi_rx_reg); | |
1761 | temp &= ~FDI_LINK_TRAIN_NONE; | |
1762 | temp |= FDI_LINK_TRAIN_PATTERN_1; | |
1763 | I915_WRITE(fdi_rx_reg, temp); | |
1764 | ||
249c0e64 ZW |
1765 | udelay(100); |
1766 | ||
1b3c7a47 ZW |
1767 | if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) { |
1768 | temp = I915_READ(PCH_LVDS); | |
1769 | I915_WRITE(PCH_LVDS, temp & ~LVDS_PORT_EN); | |
1770 | I915_READ(PCH_LVDS); | |
1771 | udelay(100); | |
1772 | } | |
1773 | ||
2c07245f ZW |
1774 | /* disable PCH transcoder */ |
1775 | temp = I915_READ(transconf_reg); | |
1776 | if ((temp & TRANS_ENABLE) != 0) { | |
1777 | I915_WRITE(transconf_reg, temp & ~TRANS_ENABLE); | |
1778 | I915_READ(transconf_reg); | |
249c0e64 | 1779 | n = 0; |
2c07245f | 1780 | /* wait for PCH transcoder off, transcoder state */ |
249c0e64 ZW |
1781 | while ((I915_READ(transconf_reg) & TRANS_STATE_ENABLE) != 0) { |
1782 | n++; | |
1783 | if (n < 60) { | |
1784 | udelay(500); | |
1785 | continue; | |
1786 | } else { | |
28c97730 ZY |
1787 | DRM_DEBUG_KMS("transcoder %d off " |
1788 | "delay\n", pipe); | |
249c0e64 ZW |
1789 | break; |
1790 | } | |
1791 | } | |
2c07245f ZW |
1792 | } |
1793 | ||
1b3c7a47 ZW |
1794 | udelay(100); |
1795 | ||
2c07245f ZW |
1796 | /* disable PCH DPLL */ |
1797 | temp = I915_READ(pch_dpll_reg); | |
1798 | if ((temp & DPLL_VCO_ENABLE) != 0) { | |
1799 | I915_WRITE(pch_dpll_reg, temp & ~DPLL_VCO_ENABLE); | |
1800 | I915_READ(pch_dpll_reg); | |
1801 | } | |
1802 | ||
1b3c7a47 ZW |
1803 | if (HAS_eDP) { |
1804 | igdng_disable_pll_edp(crtc); | |
2c07245f ZW |
1805 | } |
1806 | ||
1b3c7a47 ZW |
1807 | temp = I915_READ(fdi_rx_reg); |
1808 | temp &= ~FDI_SEL_PCDCLK; | |
1809 | I915_WRITE(fdi_rx_reg, temp); | |
1810 | I915_READ(fdi_rx_reg); | |
1811 | ||
1812 | temp = I915_READ(fdi_rx_reg); | |
1813 | temp &= ~FDI_RX_PLL_ENABLE; | |
1814 | I915_WRITE(fdi_rx_reg, temp); | |
1815 | I915_READ(fdi_rx_reg); | |
1816 | ||
249c0e64 ZW |
1817 | /* Disable CPU FDI TX PLL */ |
1818 | temp = I915_READ(fdi_tx_reg); | |
1819 | if ((temp & FDI_TX_PLL_ENABLE) != 0) { | |
1820 | I915_WRITE(fdi_tx_reg, temp & ~FDI_TX_PLL_ENABLE); | |
1821 | I915_READ(fdi_tx_reg); | |
1822 | udelay(100); | |
1823 | } | |
1824 | ||
2c07245f | 1825 | /* Wait for the clocks to turn off. */ |
1b3c7a47 | 1826 | udelay(100); |
2c07245f ZW |
1827 | break; |
1828 | } | |
1829 | } | |
1830 | ||
02e792fb DV |
1831 | static void intel_crtc_dpms_overlay(struct intel_crtc *intel_crtc, bool enable) |
1832 | { | |
1833 | struct intel_overlay *overlay; | |
03f77ea5 | 1834 | int ret; |
02e792fb DV |
1835 | |
1836 | if (!enable && intel_crtc->overlay) { | |
1837 | overlay = intel_crtc->overlay; | |
1838 | mutex_lock(&overlay->dev->struct_mutex); | |
03f77ea5 DV |
1839 | for (;;) { |
1840 | ret = intel_overlay_switch_off(overlay); | |
1841 | if (ret == 0) | |
1842 | break; | |
1843 | ||
1844 | ret = intel_overlay_recover_from_interrupt(overlay, 0); | |
1845 | if (ret != 0) { | |
1846 | /* overlay doesn't react anymore. Usually | |
1847 | * results in a black screen and an unkillable | |
1848 | * X server. */ | |
1849 | BUG(); | |
1850 | overlay->hw_wedged = HW_WEDGED; | |
1851 | break; | |
1852 | } | |
1853 | } | |
02e792fb DV |
1854 | mutex_unlock(&overlay->dev->struct_mutex); |
1855 | } | |
1856 | /* Let userspace switch the overlay on again. In most cases userspace | |
1857 | * has to recompute where to put it anyway. */ | |
1858 | ||
1859 | return; | |
1860 | } | |
1861 | ||
2c07245f | 1862 | static void i9xx_crtc_dpms(struct drm_crtc *crtc, int mode) |
79e53945 JB |
1863 | { |
1864 | struct drm_device *dev = crtc->dev; | |
79e53945 JB |
1865 | struct drm_i915_private *dev_priv = dev->dev_private; |
1866 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
1867 | int pipe = intel_crtc->pipe; | |
80824003 | 1868 | int plane = intel_crtc->plane; |
79e53945 | 1869 | int dpll_reg = (pipe == 0) ? DPLL_A : DPLL_B; |
80824003 JB |
1870 | int dspcntr_reg = (plane == 0) ? DSPACNTR : DSPBCNTR; |
1871 | int dspbase_reg = (plane == 0) ? DSPAADDR : DSPBADDR; | |
79e53945 JB |
1872 | int pipeconf_reg = (pipe == 0) ? PIPEACONF : PIPEBCONF; |
1873 | u32 temp; | |
79e53945 JB |
1874 | |
1875 | /* XXX: When our outputs are all unaware of DPMS modes other than off | |
1876 | * and on, we should map those modes to DRM_MODE_DPMS_OFF in the CRTC. | |
1877 | */ | |
1878 | switch (mode) { | |
1879 | case DRM_MODE_DPMS_ON: | |
1880 | case DRM_MODE_DPMS_STANDBY: | |
1881 | case DRM_MODE_DPMS_SUSPEND: | |
629598da JB |
1882 | intel_update_watermarks(dev); |
1883 | ||
79e53945 JB |
1884 | /* Enable the DPLL */ |
1885 | temp = I915_READ(dpll_reg); | |
1886 | if ((temp & DPLL_VCO_ENABLE) == 0) { | |
1887 | I915_WRITE(dpll_reg, temp); | |
1888 | I915_READ(dpll_reg); | |
1889 | /* Wait for the clocks to stabilize. */ | |
1890 | udelay(150); | |
1891 | I915_WRITE(dpll_reg, temp | DPLL_VCO_ENABLE); | |
1892 | I915_READ(dpll_reg); | |
1893 | /* Wait for the clocks to stabilize. */ | |
1894 | udelay(150); | |
1895 | I915_WRITE(dpll_reg, temp | DPLL_VCO_ENABLE); | |
1896 | I915_READ(dpll_reg); | |
1897 | /* Wait for the clocks to stabilize. */ | |
1898 | udelay(150); | |
1899 | } | |
1900 | ||
1901 | /* Enable the pipe */ | |
1902 | temp = I915_READ(pipeconf_reg); | |
1903 | if ((temp & PIPEACONF_ENABLE) == 0) | |
1904 | I915_WRITE(pipeconf_reg, temp | PIPEACONF_ENABLE); | |
1905 | ||
1906 | /* Enable the plane */ | |
1907 | temp = I915_READ(dspcntr_reg); | |
1908 | if ((temp & DISPLAY_PLANE_ENABLE) == 0) { | |
1909 | I915_WRITE(dspcntr_reg, temp | DISPLAY_PLANE_ENABLE); | |
1910 | /* Flush the plane changes */ | |
1911 | I915_WRITE(dspbase_reg, I915_READ(dspbase_reg)); | |
1912 | } | |
1913 | ||
1914 | intel_crtc_load_lut(crtc); | |
1915 | ||
74dff282 JB |
1916 | if ((IS_I965G(dev) || plane == 0)) |
1917 | intel_update_fbc(crtc, &crtc->mode); | |
80824003 | 1918 | |
79e53945 | 1919 | /* Give the overlay scaler a chance to enable if it's on this pipe */ |
02e792fb | 1920 | intel_crtc_dpms_overlay(intel_crtc, true); |
79e53945 JB |
1921 | break; |
1922 | case DRM_MODE_DPMS_OFF: | |
7662c8bd | 1923 | intel_update_watermarks(dev); |
02e792fb | 1924 | |
79e53945 | 1925 | /* Give the overlay scaler a chance to disable if it's on this pipe */ |
02e792fb | 1926 | intel_crtc_dpms_overlay(intel_crtc, false); |
778c9026 | 1927 | drm_vblank_off(dev, pipe); |
79e53945 | 1928 | |
e70236a8 JB |
1929 | if (dev_priv->cfb_plane == plane && |
1930 | dev_priv->display.disable_fbc) | |
1931 | dev_priv->display.disable_fbc(dev); | |
80824003 | 1932 | |
79e53945 | 1933 | /* Disable the VGA plane that we never use */ |
24f119c7 | 1934 | i915_disable_vga(dev); |
79e53945 JB |
1935 | |
1936 | /* Disable display plane */ | |
1937 | temp = I915_READ(dspcntr_reg); | |
1938 | if ((temp & DISPLAY_PLANE_ENABLE) != 0) { | |
1939 | I915_WRITE(dspcntr_reg, temp & ~DISPLAY_PLANE_ENABLE); | |
1940 | /* Flush the plane changes */ | |
1941 | I915_WRITE(dspbase_reg, I915_READ(dspbase_reg)); | |
1942 | I915_READ(dspbase_reg); | |
1943 | } | |
1944 | ||
1945 | if (!IS_I9XX(dev)) { | |
1946 | /* Wait for vblank for the disable to take effect */ | |
1947 | intel_wait_for_vblank(dev); | |
1948 | } | |
1949 | ||
1950 | /* Next, disable display pipes */ | |
1951 | temp = I915_READ(pipeconf_reg); | |
1952 | if ((temp & PIPEACONF_ENABLE) != 0) { | |
1953 | I915_WRITE(pipeconf_reg, temp & ~PIPEACONF_ENABLE); | |
1954 | I915_READ(pipeconf_reg); | |
1955 | } | |
1956 | ||
1957 | /* Wait for vblank for the disable to take effect. */ | |
1958 | intel_wait_for_vblank(dev); | |
1959 | ||
1960 | temp = I915_READ(dpll_reg); | |
1961 | if ((temp & DPLL_VCO_ENABLE) != 0) { | |
1962 | I915_WRITE(dpll_reg, temp & ~DPLL_VCO_ENABLE); | |
1963 | I915_READ(dpll_reg); | |
1964 | } | |
1965 | ||
1966 | /* Wait for the clocks to turn off. */ | |
1967 | udelay(150); | |
1968 | break; | |
1969 | } | |
2c07245f ZW |
1970 | } |
1971 | ||
1972 | /** | |
1973 | * Sets the power management mode of the pipe and plane. | |
1974 | * | |
1975 | * This code should probably grow support for turning the cursor off and back | |
1976 | * on appropriately at the same time as we're turning the pipe off/on. | |
1977 | */ | |
1978 | static void intel_crtc_dpms(struct drm_crtc *crtc, int mode) | |
1979 | { | |
1980 | struct drm_device *dev = crtc->dev; | |
e70236a8 | 1981 | struct drm_i915_private *dev_priv = dev->dev_private; |
2c07245f ZW |
1982 | struct drm_i915_master_private *master_priv; |
1983 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
1984 | int pipe = intel_crtc->pipe; | |
1985 | bool enabled; | |
1986 | ||
e70236a8 | 1987 | dev_priv->display.dpms(crtc, mode); |
79e53945 | 1988 | |
65655d4a DV |
1989 | intel_crtc->dpms_mode = mode; |
1990 | ||
79e53945 JB |
1991 | if (!dev->primary->master) |
1992 | return; | |
1993 | ||
1994 | master_priv = dev->primary->master->driver_priv; | |
1995 | if (!master_priv->sarea_priv) | |
1996 | return; | |
1997 | ||
1998 | enabled = crtc->enabled && mode != DRM_MODE_DPMS_OFF; | |
1999 | ||
2000 | switch (pipe) { | |
2001 | case 0: | |
2002 | master_priv->sarea_priv->pipeA_w = enabled ? crtc->mode.hdisplay : 0; | |
2003 | master_priv->sarea_priv->pipeA_h = enabled ? crtc->mode.vdisplay : 0; | |
2004 | break; | |
2005 | case 1: | |
2006 | master_priv->sarea_priv->pipeB_w = enabled ? crtc->mode.hdisplay : 0; | |
2007 | master_priv->sarea_priv->pipeB_h = enabled ? crtc->mode.vdisplay : 0; | |
2008 | break; | |
2009 | default: | |
2010 | DRM_ERROR("Can't update pipe %d in SAREA\n", pipe); | |
2011 | break; | |
2012 | } | |
79e53945 JB |
2013 | } |
2014 | ||
2015 | static void intel_crtc_prepare (struct drm_crtc *crtc) | |
2016 | { | |
2017 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
2018 | crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF); | |
2019 | } | |
2020 | ||
2021 | static void intel_crtc_commit (struct drm_crtc *crtc) | |
2022 | { | |
2023 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
2024 | crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON); | |
2025 | } | |
2026 | ||
2027 | void intel_encoder_prepare (struct drm_encoder *encoder) | |
2028 | { | |
2029 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
2030 | /* lvds has its own version of prepare see intel_lvds_prepare */ | |
2031 | encoder_funcs->dpms(encoder, DRM_MODE_DPMS_OFF); | |
2032 | } | |
2033 | ||
2034 | void intel_encoder_commit (struct drm_encoder *encoder) | |
2035 | { | |
2036 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
2037 | /* lvds has its own version of commit see intel_lvds_commit */ | |
2038 | encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON); | |
2039 | } | |
2040 | ||
2041 | static bool intel_crtc_mode_fixup(struct drm_crtc *crtc, | |
2042 | struct drm_display_mode *mode, | |
2043 | struct drm_display_mode *adjusted_mode) | |
2044 | { | |
2c07245f ZW |
2045 | struct drm_device *dev = crtc->dev; |
2046 | if (IS_IGDNG(dev)) { | |
2047 | /* FDI link clock is fixed at 2.7G */ | |
2048 | if (mode->clock * 3 > 27000 * 4) | |
2049 | return MODE_CLOCK_HIGH; | |
2050 | } | |
79e53945 JB |
2051 | return true; |
2052 | } | |
2053 | ||
e70236a8 JB |
2054 | static int i945_get_display_clock_speed(struct drm_device *dev) |
2055 | { | |
2056 | return 400000; | |
2057 | } | |
79e53945 | 2058 | |
e70236a8 | 2059 | static int i915_get_display_clock_speed(struct drm_device *dev) |
79e53945 | 2060 | { |
e70236a8 JB |
2061 | return 333000; |
2062 | } | |
79e53945 | 2063 | |
e70236a8 JB |
2064 | static int i9xx_misc_get_display_clock_speed(struct drm_device *dev) |
2065 | { | |
2066 | return 200000; | |
2067 | } | |
79e53945 | 2068 | |
e70236a8 JB |
2069 | static int i915gm_get_display_clock_speed(struct drm_device *dev) |
2070 | { | |
2071 | u16 gcfgc = 0; | |
79e53945 | 2072 | |
e70236a8 JB |
2073 | pci_read_config_word(dev->pdev, GCFGC, &gcfgc); |
2074 | ||
2075 | if (gcfgc & GC_LOW_FREQUENCY_ENABLE) | |
2076 | return 133000; | |
2077 | else { | |
2078 | switch (gcfgc & GC_DISPLAY_CLOCK_MASK) { | |
2079 | case GC_DISPLAY_CLOCK_333_MHZ: | |
2080 | return 333000; | |
2081 | default: | |
2082 | case GC_DISPLAY_CLOCK_190_200_MHZ: | |
2083 | return 190000; | |
79e53945 | 2084 | } |
e70236a8 JB |
2085 | } |
2086 | } | |
2087 | ||
2088 | static int i865_get_display_clock_speed(struct drm_device *dev) | |
2089 | { | |
2090 | return 266000; | |
2091 | } | |
2092 | ||
2093 | static int i855_get_display_clock_speed(struct drm_device *dev) | |
2094 | { | |
2095 | u16 hpllcc = 0; | |
2096 | /* Assume that the hardware is in the high speed state. This | |
2097 | * should be the default. | |
2098 | */ | |
2099 | switch (hpllcc & GC_CLOCK_CONTROL_MASK) { | |
2100 | case GC_CLOCK_133_200: | |
2101 | case GC_CLOCK_100_200: | |
2102 | return 200000; | |
2103 | case GC_CLOCK_166_250: | |
2104 | return 250000; | |
2105 | case GC_CLOCK_100_133: | |
79e53945 | 2106 | return 133000; |
e70236a8 | 2107 | } |
79e53945 | 2108 | |
e70236a8 JB |
2109 | /* Shouldn't happen */ |
2110 | return 0; | |
2111 | } | |
79e53945 | 2112 | |
e70236a8 JB |
2113 | static int i830_get_display_clock_speed(struct drm_device *dev) |
2114 | { | |
2115 | return 133000; | |
79e53945 JB |
2116 | } |
2117 | ||
79e53945 JB |
2118 | /** |
2119 | * Return the pipe currently connected to the panel fitter, | |
2120 | * or -1 if the panel fitter is not present or not in use | |
2121 | */ | |
02e792fb | 2122 | int intel_panel_fitter_pipe (struct drm_device *dev) |
79e53945 JB |
2123 | { |
2124 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2125 | u32 pfit_control; | |
2126 | ||
2127 | /* i830 doesn't have a panel fitter */ | |
2128 | if (IS_I830(dev)) | |
2129 | return -1; | |
2130 | ||
2131 | pfit_control = I915_READ(PFIT_CONTROL); | |
2132 | ||
2133 | /* See if the panel fitter is in use */ | |
2134 | if ((pfit_control & PFIT_ENABLE) == 0) | |
2135 | return -1; | |
2136 | ||
2137 | /* 965 can place panel fitter on either pipe */ | |
2138 | if (IS_I965G(dev)) | |
2139 | return (pfit_control >> 29) & 0x3; | |
2140 | ||
2141 | /* older chips can only use pipe 1 */ | |
2142 | return 1; | |
2143 | } | |
2144 | ||
2c07245f ZW |
2145 | struct fdi_m_n { |
2146 | u32 tu; | |
2147 | u32 gmch_m; | |
2148 | u32 gmch_n; | |
2149 | u32 link_m; | |
2150 | u32 link_n; | |
2151 | }; | |
2152 | ||
2153 | static void | |
2154 | fdi_reduce_ratio(u32 *num, u32 *den) | |
2155 | { | |
2156 | while (*num > 0xffffff || *den > 0xffffff) { | |
2157 | *num >>= 1; | |
2158 | *den >>= 1; | |
2159 | } | |
2160 | } | |
2161 | ||
2162 | #define DATA_N 0x800000 | |
2163 | #define LINK_N 0x80000 | |
2164 | ||
2165 | static void | |
58a27471 | 2166 | igdng_compute_m_n(int bits_per_pixel, int nlanes, |
2c07245f ZW |
2167 | int pixel_clock, int link_clock, |
2168 | struct fdi_m_n *m_n) | |
2169 | { | |
2170 | u64 temp; | |
2171 | ||
2172 | m_n->tu = 64; /* default size */ | |
2173 | ||
2174 | temp = (u64) DATA_N * pixel_clock; | |
2175 | temp = div_u64(temp, link_clock); | |
58a27471 ZW |
2176 | m_n->gmch_m = div_u64(temp * bits_per_pixel, nlanes); |
2177 | m_n->gmch_m >>= 3; /* convert to bytes_per_pixel */ | |
2c07245f ZW |
2178 | m_n->gmch_n = DATA_N; |
2179 | fdi_reduce_ratio(&m_n->gmch_m, &m_n->gmch_n); | |
2180 | ||
2181 | temp = (u64) LINK_N * pixel_clock; | |
2182 | m_n->link_m = div_u64(temp, link_clock); | |
2183 | m_n->link_n = LINK_N; | |
2184 | fdi_reduce_ratio(&m_n->link_m, &m_n->link_n); | |
2185 | } | |
2186 | ||
2187 | ||
7662c8bd SL |
2188 | struct intel_watermark_params { |
2189 | unsigned long fifo_size; | |
2190 | unsigned long max_wm; | |
2191 | unsigned long default_wm; | |
2192 | unsigned long guard_size; | |
2193 | unsigned long cacheline_size; | |
2194 | }; | |
2195 | ||
2196 | /* IGD has different values for various configs */ | |
2197 | static struct intel_watermark_params igd_display_wm = { | |
2198 | IGD_DISPLAY_FIFO, | |
2199 | IGD_MAX_WM, | |
2200 | IGD_DFT_WM, | |
2201 | IGD_GUARD_WM, | |
2202 | IGD_FIFO_LINE_SIZE | |
2203 | }; | |
2204 | static struct intel_watermark_params igd_display_hplloff_wm = { | |
2205 | IGD_DISPLAY_FIFO, | |
2206 | IGD_MAX_WM, | |
2207 | IGD_DFT_HPLLOFF_WM, | |
2208 | IGD_GUARD_WM, | |
2209 | IGD_FIFO_LINE_SIZE | |
2210 | }; | |
2211 | static struct intel_watermark_params igd_cursor_wm = { | |
2212 | IGD_CURSOR_FIFO, | |
2213 | IGD_CURSOR_MAX_WM, | |
2214 | IGD_CURSOR_DFT_WM, | |
2215 | IGD_CURSOR_GUARD_WM, | |
2216 | IGD_FIFO_LINE_SIZE, | |
2217 | }; | |
2218 | static struct intel_watermark_params igd_cursor_hplloff_wm = { | |
2219 | IGD_CURSOR_FIFO, | |
2220 | IGD_CURSOR_MAX_WM, | |
2221 | IGD_CURSOR_DFT_WM, | |
2222 | IGD_CURSOR_GUARD_WM, | |
2223 | IGD_FIFO_LINE_SIZE | |
2224 | }; | |
0e442c60 JB |
2225 | static struct intel_watermark_params g4x_wm_info = { |
2226 | G4X_FIFO_SIZE, | |
2227 | G4X_MAX_WM, | |
2228 | G4X_MAX_WM, | |
2229 | 2, | |
2230 | G4X_FIFO_LINE_SIZE, | |
2231 | }; | |
7662c8bd | 2232 | static struct intel_watermark_params i945_wm_info = { |
dff33cfc | 2233 | I945_FIFO_SIZE, |
7662c8bd SL |
2234 | I915_MAX_WM, |
2235 | 1, | |
dff33cfc JB |
2236 | 2, |
2237 | I915_FIFO_LINE_SIZE | |
7662c8bd SL |
2238 | }; |
2239 | static struct intel_watermark_params i915_wm_info = { | |
dff33cfc | 2240 | I915_FIFO_SIZE, |
7662c8bd SL |
2241 | I915_MAX_WM, |
2242 | 1, | |
dff33cfc | 2243 | 2, |
7662c8bd SL |
2244 | I915_FIFO_LINE_SIZE |
2245 | }; | |
2246 | static struct intel_watermark_params i855_wm_info = { | |
2247 | I855GM_FIFO_SIZE, | |
2248 | I915_MAX_WM, | |
2249 | 1, | |
dff33cfc | 2250 | 2, |
7662c8bd SL |
2251 | I830_FIFO_LINE_SIZE |
2252 | }; | |
2253 | static struct intel_watermark_params i830_wm_info = { | |
2254 | I830_FIFO_SIZE, | |
2255 | I915_MAX_WM, | |
2256 | 1, | |
dff33cfc | 2257 | 2, |
7662c8bd SL |
2258 | I830_FIFO_LINE_SIZE |
2259 | }; | |
2260 | ||
dff33cfc JB |
2261 | /** |
2262 | * intel_calculate_wm - calculate watermark level | |
2263 | * @clock_in_khz: pixel clock | |
2264 | * @wm: chip FIFO params | |
2265 | * @pixel_size: display pixel size | |
2266 | * @latency_ns: memory latency for the platform | |
2267 | * | |
2268 | * Calculate the watermark level (the level at which the display plane will | |
2269 | * start fetching from memory again). Each chip has a different display | |
2270 | * FIFO size and allocation, so the caller needs to figure that out and pass | |
2271 | * in the correct intel_watermark_params structure. | |
2272 | * | |
2273 | * As the pixel clock runs, the FIFO will be drained at a rate that depends | |
2274 | * on the pixel size. When it reaches the watermark level, it'll start | |
2275 | * fetching FIFO line sized based chunks from memory until the FIFO fills | |
2276 | * past the watermark point. If the FIFO drains completely, a FIFO underrun | |
2277 | * will occur, and a display engine hang could result. | |
2278 | */ | |
7662c8bd SL |
2279 | static unsigned long intel_calculate_wm(unsigned long clock_in_khz, |
2280 | struct intel_watermark_params *wm, | |
2281 | int pixel_size, | |
2282 | unsigned long latency_ns) | |
2283 | { | |
390c4dd4 | 2284 | long entries_required, wm_size; |
dff33cfc | 2285 | |
d660467c JB |
2286 | /* |
2287 | * Note: we need to make sure we don't overflow for various clock & | |
2288 | * latency values. | |
2289 | * clocks go from a few thousand to several hundred thousand. | |
2290 | * latency is usually a few thousand | |
2291 | */ | |
2292 | entries_required = ((clock_in_khz / 1000) * pixel_size * latency_ns) / | |
2293 | 1000; | |
dff33cfc | 2294 | entries_required /= wm->cacheline_size; |
7662c8bd | 2295 | |
28c97730 | 2296 | DRM_DEBUG_KMS("FIFO entries required for mode: %d\n", entries_required); |
dff33cfc JB |
2297 | |
2298 | wm_size = wm->fifo_size - (entries_required + wm->guard_size); | |
2299 | ||
28c97730 | 2300 | DRM_DEBUG_KMS("FIFO watermark level: %d\n", wm_size); |
7662c8bd | 2301 | |
390c4dd4 JB |
2302 | /* Don't promote wm_size to unsigned... */ |
2303 | if (wm_size > (long)wm->max_wm) | |
7662c8bd | 2304 | wm_size = wm->max_wm; |
390c4dd4 | 2305 | if (wm_size <= 0) |
7662c8bd SL |
2306 | wm_size = wm->default_wm; |
2307 | return wm_size; | |
2308 | } | |
2309 | ||
2310 | struct cxsr_latency { | |
2311 | int is_desktop; | |
2312 | unsigned long fsb_freq; | |
2313 | unsigned long mem_freq; | |
2314 | unsigned long display_sr; | |
2315 | unsigned long display_hpll_disable; | |
2316 | unsigned long cursor_sr; | |
2317 | unsigned long cursor_hpll_disable; | |
2318 | }; | |
2319 | ||
2320 | static struct cxsr_latency cxsr_latency_table[] = { | |
2321 | {1, 800, 400, 3382, 33382, 3983, 33983}, /* DDR2-400 SC */ | |
2322 | {1, 800, 667, 3354, 33354, 3807, 33807}, /* DDR2-667 SC */ | |
2323 | {1, 800, 800, 3347, 33347, 3763, 33763}, /* DDR2-800 SC */ | |
2324 | ||
2325 | {1, 667, 400, 3400, 33400, 4021, 34021}, /* DDR2-400 SC */ | |
2326 | {1, 667, 667, 3372, 33372, 3845, 33845}, /* DDR2-667 SC */ | |
2327 | {1, 667, 800, 3386, 33386, 3822, 33822}, /* DDR2-800 SC */ | |
2328 | ||
2329 | {1, 400, 400, 3472, 33472, 4173, 34173}, /* DDR2-400 SC */ | |
2330 | {1, 400, 667, 3443, 33443, 3996, 33996}, /* DDR2-667 SC */ | |
2331 | {1, 400, 800, 3430, 33430, 3946, 33946}, /* DDR2-800 SC */ | |
2332 | ||
2333 | {0, 800, 400, 3438, 33438, 4065, 34065}, /* DDR2-400 SC */ | |
2334 | {0, 800, 667, 3410, 33410, 3889, 33889}, /* DDR2-667 SC */ | |
2335 | {0, 800, 800, 3403, 33403, 3845, 33845}, /* DDR2-800 SC */ | |
2336 | ||
2337 | {0, 667, 400, 3456, 33456, 4103, 34106}, /* DDR2-400 SC */ | |
2338 | {0, 667, 667, 3428, 33428, 3927, 33927}, /* DDR2-667 SC */ | |
2339 | {0, 667, 800, 3443, 33443, 3905, 33905}, /* DDR2-800 SC */ | |
2340 | ||
2341 | {0, 400, 400, 3528, 33528, 4255, 34255}, /* DDR2-400 SC */ | |
2342 | {0, 400, 667, 3500, 33500, 4079, 34079}, /* DDR2-667 SC */ | |
2343 | {0, 400, 800, 3487, 33487, 4029, 34029}, /* DDR2-800 SC */ | |
2344 | }; | |
2345 | ||
2346 | static struct cxsr_latency *intel_get_cxsr_latency(int is_desktop, int fsb, | |
2347 | int mem) | |
2348 | { | |
2349 | int i; | |
2350 | struct cxsr_latency *latency; | |
2351 | ||
2352 | if (fsb == 0 || mem == 0) | |
2353 | return NULL; | |
2354 | ||
2355 | for (i = 0; i < ARRAY_SIZE(cxsr_latency_table); i++) { | |
2356 | latency = &cxsr_latency_table[i]; | |
2357 | if (is_desktop == latency->is_desktop && | |
decbbcda JSR |
2358 | fsb == latency->fsb_freq && mem == latency->mem_freq) |
2359 | return latency; | |
7662c8bd | 2360 | } |
decbbcda | 2361 | |
28c97730 | 2362 | DRM_DEBUG_KMS("Unknown FSB/MEM found, disable CxSR\n"); |
decbbcda JSR |
2363 | |
2364 | return NULL; | |
7662c8bd SL |
2365 | } |
2366 | ||
2367 | static void igd_disable_cxsr(struct drm_device *dev) | |
2368 | { | |
2369 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2370 | u32 reg; | |
2371 | ||
2372 | /* deactivate cxsr */ | |
2373 | reg = I915_READ(DSPFW3); | |
2374 | reg &= ~(IGD_SELF_REFRESH_EN); | |
2375 | I915_WRITE(DSPFW3, reg); | |
2376 | DRM_INFO("Big FIFO is disabled\n"); | |
2377 | } | |
2378 | ||
2379 | static void igd_enable_cxsr(struct drm_device *dev, unsigned long clock, | |
2380 | int pixel_size) | |
2381 | { | |
2382 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2383 | u32 reg; | |
2384 | unsigned long wm; | |
2385 | struct cxsr_latency *latency; | |
2386 | ||
2387 | latency = intel_get_cxsr_latency(IS_IGDG(dev), dev_priv->fsb_freq, | |
2388 | dev_priv->mem_freq); | |
2389 | if (!latency) { | |
28c97730 | 2390 | DRM_DEBUG_KMS("Unknown FSB/MEM found, disable CxSR\n"); |
7662c8bd SL |
2391 | igd_disable_cxsr(dev); |
2392 | return; | |
2393 | } | |
2394 | ||
2395 | /* Display SR */ | |
2396 | wm = intel_calculate_wm(clock, &igd_display_wm, pixel_size, | |
2397 | latency->display_sr); | |
2398 | reg = I915_READ(DSPFW1); | |
2399 | reg &= 0x7fffff; | |
2400 | reg |= wm << 23; | |
2401 | I915_WRITE(DSPFW1, reg); | |
28c97730 | 2402 | DRM_DEBUG_KMS("DSPFW1 register is %x\n", reg); |
7662c8bd SL |
2403 | |
2404 | /* cursor SR */ | |
2405 | wm = intel_calculate_wm(clock, &igd_cursor_wm, pixel_size, | |
2406 | latency->cursor_sr); | |
2407 | reg = I915_READ(DSPFW3); | |
2408 | reg &= ~(0x3f << 24); | |
2409 | reg |= (wm & 0x3f) << 24; | |
2410 | I915_WRITE(DSPFW3, reg); | |
2411 | ||
2412 | /* Display HPLL off SR */ | |
2413 | wm = intel_calculate_wm(clock, &igd_display_hplloff_wm, | |
2414 | latency->display_hpll_disable, I915_FIFO_LINE_SIZE); | |
2415 | reg = I915_READ(DSPFW3); | |
2416 | reg &= 0xfffffe00; | |
2417 | reg |= wm & 0x1ff; | |
2418 | I915_WRITE(DSPFW3, reg); | |
2419 | ||
2420 | /* cursor HPLL off SR */ | |
2421 | wm = intel_calculate_wm(clock, &igd_cursor_hplloff_wm, pixel_size, | |
2422 | latency->cursor_hpll_disable); | |
2423 | reg = I915_READ(DSPFW3); | |
2424 | reg &= ~(0x3f << 16); | |
2425 | reg |= (wm & 0x3f) << 16; | |
2426 | I915_WRITE(DSPFW3, reg); | |
28c97730 | 2427 | DRM_DEBUG_KMS("DSPFW3 register is %x\n", reg); |
7662c8bd SL |
2428 | |
2429 | /* activate cxsr */ | |
2430 | reg = I915_READ(DSPFW3); | |
2431 | reg |= IGD_SELF_REFRESH_EN; | |
2432 | I915_WRITE(DSPFW3, reg); | |
2433 | ||
2434 | DRM_INFO("Big FIFO is enabled\n"); | |
2435 | ||
2436 | return; | |
2437 | } | |
2438 | ||
bcc24fb4 JB |
2439 | /* |
2440 | * Latency for FIFO fetches is dependent on several factors: | |
2441 | * - memory configuration (speed, channels) | |
2442 | * - chipset | |
2443 | * - current MCH state | |
2444 | * It can be fairly high in some situations, so here we assume a fairly | |
2445 | * pessimal value. It's a tradeoff between extra memory fetches (if we | |
2446 | * set this value too high, the FIFO will fetch frequently to stay full) | |
2447 | * and power consumption (set it too low to save power and we might see | |
2448 | * FIFO underruns and display "flicker"). | |
2449 | * | |
2450 | * A value of 5us seems to be a good balance; safe for very low end | |
2451 | * platforms but not overly aggressive on lower latency configs. | |
2452 | */ | |
2453 | const static int latency_ns = 5000; | |
7662c8bd | 2454 | |
e70236a8 | 2455 | static int i9xx_get_fifo_size(struct drm_device *dev, int plane) |
dff33cfc JB |
2456 | { |
2457 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2458 | uint32_t dsparb = I915_READ(DSPARB); | |
2459 | int size; | |
2460 | ||
e70236a8 | 2461 | if (plane == 0) |
f3601326 | 2462 | size = dsparb & 0x7f; |
e70236a8 JB |
2463 | else |
2464 | size = ((dsparb >> DSPARB_CSTART_SHIFT) & 0x7f) - | |
2465 | (dsparb & 0x7f); | |
dff33cfc | 2466 | |
28c97730 ZY |
2467 | DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb, |
2468 | plane ? "B" : "A", size); | |
dff33cfc JB |
2469 | |
2470 | return size; | |
2471 | } | |
7662c8bd | 2472 | |
e70236a8 JB |
2473 | static int i85x_get_fifo_size(struct drm_device *dev, int plane) |
2474 | { | |
2475 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2476 | uint32_t dsparb = I915_READ(DSPARB); | |
2477 | int size; | |
2478 | ||
2479 | if (plane == 0) | |
2480 | size = dsparb & 0x1ff; | |
2481 | else | |
2482 | size = ((dsparb >> DSPARB_BEND_SHIFT) & 0x1ff) - | |
2483 | (dsparb & 0x1ff); | |
2484 | size >>= 1; /* Convert to cachelines */ | |
dff33cfc | 2485 | |
28c97730 ZY |
2486 | DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb, |
2487 | plane ? "B" : "A", size); | |
dff33cfc JB |
2488 | |
2489 | return size; | |
2490 | } | |
7662c8bd | 2491 | |
e70236a8 JB |
2492 | static int i845_get_fifo_size(struct drm_device *dev, int plane) |
2493 | { | |
2494 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2495 | uint32_t dsparb = I915_READ(DSPARB); | |
2496 | int size; | |
2497 | ||
2498 | size = dsparb & 0x7f; | |
2499 | size >>= 2; /* Convert to cachelines */ | |
2500 | ||
28c97730 ZY |
2501 | DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb, |
2502 | plane ? "B" : "A", | |
e70236a8 JB |
2503 | size); |
2504 | ||
2505 | return size; | |
2506 | } | |
2507 | ||
2508 | static int i830_get_fifo_size(struct drm_device *dev, int plane) | |
2509 | { | |
2510 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2511 | uint32_t dsparb = I915_READ(DSPARB); | |
2512 | int size; | |
2513 | ||
2514 | size = dsparb & 0x7f; | |
2515 | size >>= 1; /* Convert to cachelines */ | |
2516 | ||
28c97730 ZY |
2517 | DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb, |
2518 | plane ? "B" : "A", size); | |
e70236a8 JB |
2519 | |
2520 | return size; | |
2521 | } | |
2522 | ||
0e442c60 JB |
2523 | static void g4x_update_wm(struct drm_device *dev, int planea_clock, |
2524 | int planeb_clock, int sr_hdisplay, int pixel_size) | |
652c393a JB |
2525 | { |
2526 | struct drm_i915_private *dev_priv = dev->dev_private; | |
0e442c60 JB |
2527 | int total_size, cacheline_size; |
2528 | int planea_wm, planeb_wm, cursora_wm, cursorb_wm, cursor_sr; | |
2529 | struct intel_watermark_params planea_params, planeb_params; | |
2530 | unsigned long line_time_us; | |
2531 | int sr_clock, sr_entries = 0, entries_required; | |
652c393a | 2532 | |
0e442c60 JB |
2533 | /* Create copies of the base settings for each pipe */ |
2534 | planea_params = planeb_params = g4x_wm_info; | |
2535 | ||
2536 | /* Grab a couple of global values before we overwrite them */ | |
2537 | total_size = planea_params.fifo_size; | |
2538 | cacheline_size = planea_params.cacheline_size; | |
2539 | ||
2540 | /* | |
2541 | * Note: we need to make sure we don't overflow for various clock & | |
2542 | * latency values. | |
2543 | * clocks go from a few thousand to several hundred thousand. | |
2544 | * latency is usually a few thousand | |
2545 | */ | |
2546 | entries_required = ((planea_clock / 1000) * pixel_size * latency_ns) / | |
2547 | 1000; | |
2548 | entries_required /= G4X_FIFO_LINE_SIZE; | |
2549 | planea_wm = entries_required + planea_params.guard_size; | |
2550 | ||
2551 | entries_required = ((planeb_clock / 1000) * pixel_size * latency_ns) / | |
2552 | 1000; | |
2553 | entries_required /= G4X_FIFO_LINE_SIZE; | |
2554 | planeb_wm = entries_required + planeb_params.guard_size; | |
2555 | ||
2556 | cursora_wm = cursorb_wm = 16; | |
2557 | cursor_sr = 32; | |
2558 | ||
2559 | DRM_DEBUG("FIFO watermarks - A: %d, B: %d\n", planea_wm, planeb_wm); | |
2560 | ||
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; | |
2565 | ||
2566 | sr_clock = planea_clock ? planea_clock : planeb_clock; | |
2567 | line_time_us = ((sr_hdisplay * 1000) / sr_clock); | |
2568 | ||
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 / cacheline_size, 1); | |
2573 | DRM_DEBUG("self-refresh entries: %d\n", sr_entries); | |
2574 | I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN); | |
2575 | } | |
2576 | ||
2577 | DRM_DEBUG("Setting FIFO watermarks - A: %d, B: %d, SR %d\n", | |
2578 | planea_wm, planeb_wm, sr_entries); | |
2579 | ||
2580 | planea_wm &= 0x3f; | |
2581 | planeb_wm &= 0x3f; | |
2582 | ||
2583 | I915_WRITE(DSPFW1, (sr_entries << DSPFW_SR_SHIFT) | | |
2584 | (cursorb_wm << DSPFW_CURSORB_SHIFT) | | |
2585 | (planeb_wm << DSPFW_PLANEB_SHIFT) | planea_wm); | |
2586 | I915_WRITE(DSPFW2, (I915_READ(DSPFW2) & DSPFW_CURSORA_MASK) | | |
2587 | (cursora_wm << DSPFW_CURSORA_SHIFT)); | |
2588 | /* HPLL off in SR has some issues on G4x... disable it */ | |
2589 | I915_WRITE(DSPFW3, (I915_READ(DSPFW3) & ~DSPFW_HPLL_SR_EN) | | |
2590 | (cursor_sr << DSPFW_CURSOR_SR_SHIFT)); | |
652c393a JB |
2591 | } |
2592 | ||
1dc7546d JB |
2593 | static void i965_update_wm(struct drm_device *dev, int planea_clock, |
2594 | int planeb_clock, int sr_hdisplay, int pixel_size) | |
7662c8bd SL |
2595 | { |
2596 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1dc7546d JB |
2597 | unsigned long line_time_us; |
2598 | int sr_clock, sr_entries, srwm = 1; | |
2599 | ||
2600 | /* Calc sr entries for one plane configs */ | |
2601 | if (sr_hdisplay && (!planea_clock || !planeb_clock)) { | |
2602 | /* self-refresh has much higher latency */ | |
2603 | const static int sr_latency_ns = 12000; | |
2604 | ||
2605 | sr_clock = planea_clock ? planea_clock : planeb_clock; | |
2606 | line_time_us = ((sr_hdisplay * 1000) / sr_clock); | |
2607 | ||
2608 | /* Use ns/us then divide to preserve precision */ | |
2609 | sr_entries = (((sr_latency_ns / line_time_us) + 1) * | |
2610 | pixel_size * sr_hdisplay) / 1000; | |
2611 | sr_entries = roundup(sr_entries / I915_FIFO_LINE_SIZE, 1); | |
2612 | DRM_DEBUG("self-refresh entries: %d\n", sr_entries); | |
2613 | srwm = I945_FIFO_SIZE - sr_entries; | |
2614 | if (srwm < 0) | |
2615 | srwm = 1; | |
2616 | srwm &= 0x3f; | |
2617 | I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN); | |
2618 | } | |
7662c8bd | 2619 | |
1dc7546d JB |
2620 | DRM_DEBUG_KMS("Setting FIFO watermarks - A: 8, B: 8, C: 8, SR %d\n", |
2621 | srwm); | |
7662c8bd SL |
2622 | |
2623 | /* 965 has limitations... */ | |
1dc7546d JB |
2624 | I915_WRITE(DSPFW1, (srwm << DSPFW_SR_SHIFT) | (8 << 16) | (8 << 8) | |
2625 | (8 << 0)); | |
7662c8bd SL |
2626 | I915_WRITE(DSPFW2, (8 << 8) | (8 << 0)); |
2627 | } | |
2628 | ||
2629 | static void i9xx_update_wm(struct drm_device *dev, int planea_clock, | |
2630 | int planeb_clock, int sr_hdisplay, int pixel_size) | |
2631 | { | |
2632 | struct drm_i915_private *dev_priv = dev->dev_private; | |
dff33cfc JB |
2633 | uint32_t fwater_lo; |
2634 | uint32_t fwater_hi; | |
2635 | int total_size, cacheline_size, cwm, srwm = 1; | |
2636 | int planea_wm, planeb_wm; | |
2637 | struct intel_watermark_params planea_params, planeb_params; | |
7662c8bd SL |
2638 | unsigned long line_time_us; |
2639 | int sr_clock, sr_entries = 0; | |
2640 | ||
dff33cfc | 2641 | /* Create copies of the base settings for each pipe */ |
7662c8bd | 2642 | if (IS_I965GM(dev) || IS_I945GM(dev)) |
dff33cfc | 2643 | planea_params = planeb_params = i945_wm_info; |
7662c8bd | 2644 | else if (IS_I9XX(dev)) |
dff33cfc | 2645 | planea_params = planeb_params = i915_wm_info; |
7662c8bd | 2646 | else |
dff33cfc | 2647 | planea_params = planeb_params = i855_wm_info; |
7662c8bd | 2648 | |
dff33cfc JB |
2649 | /* Grab a couple of global values before we overwrite them */ |
2650 | total_size = planea_params.fifo_size; | |
2651 | cacheline_size = planea_params.cacheline_size; | |
7662c8bd | 2652 | |
dff33cfc | 2653 | /* Update per-plane FIFO sizes */ |
e70236a8 JB |
2654 | planea_params.fifo_size = dev_priv->display.get_fifo_size(dev, 0); |
2655 | planeb_params.fifo_size = dev_priv->display.get_fifo_size(dev, 1); | |
7662c8bd | 2656 | |
dff33cfc JB |
2657 | planea_wm = intel_calculate_wm(planea_clock, &planea_params, |
2658 | pixel_size, latency_ns); | |
2659 | planeb_wm = intel_calculate_wm(planeb_clock, &planeb_params, | |
2660 | pixel_size, latency_ns); | |
28c97730 | 2661 | DRM_DEBUG_KMS("FIFO watermarks - A: %d, B: %d\n", planea_wm, planeb_wm); |
7662c8bd SL |
2662 | |
2663 | /* | |
2664 | * Overlay gets an aggressive default since video jitter is bad. | |
2665 | */ | |
2666 | cwm = 2; | |
2667 | ||
dff33cfc | 2668 | /* Calc sr entries for one plane configs */ |
652c393a JB |
2669 | if (HAS_FW_BLC(dev) && sr_hdisplay && |
2670 | (!planea_clock || !planeb_clock)) { | |
dff33cfc JB |
2671 | /* self-refresh has much higher latency */ |
2672 | const static int sr_latency_ns = 6000; | |
2673 | ||
7662c8bd | 2674 | sr_clock = planea_clock ? planea_clock : planeb_clock; |
dff33cfc JB |
2675 | line_time_us = ((sr_hdisplay * 1000) / sr_clock); |
2676 | ||
2677 | /* Use ns/us then divide to preserve precision */ | |
2678 | sr_entries = (((sr_latency_ns / line_time_us) + 1) * | |
2679 | pixel_size * sr_hdisplay) / 1000; | |
2680 | sr_entries = roundup(sr_entries / cacheline_size, 1); | |
28c97730 | 2681 | DRM_DEBUG_KMS("self-refresh entries: %d\n", sr_entries); |
dff33cfc JB |
2682 | srwm = total_size - sr_entries; |
2683 | if (srwm < 0) | |
2684 | srwm = 1; | |
652c393a | 2685 | I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN | (srwm & 0x3f)); |
7662c8bd SL |
2686 | } |
2687 | ||
28c97730 | 2688 | DRM_DEBUG_KMS("Setting FIFO watermarks - A: %d, B: %d, C: %d, SR %d\n", |
dff33cfc | 2689 | planea_wm, planeb_wm, cwm, srwm); |
7662c8bd | 2690 | |
dff33cfc JB |
2691 | fwater_lo = ((planeb_wm & 0x3f) << 16) | (planea_wm & 0x3f); |
2692 | fwater_hi = (cwm & 0x1f); | |
2693 | ||
2694 | /* Set request length to 8 cachelines per fetch */ | |
2695 | fwater_lo = fwater_lo | (1 << 24) | (1 << 8); | |
2696 | fwater_hi = fwater_hi | (1 << 8); | |
7662c8bd SL |
2697 | |
2698 | I915_WRITE(FW_BLC, fwater_lo); | |
2699 | I915_WRITE(FW_BLC2, fwater_hi); | |
7662c8bd SL |
2700 | } |
2701 | ||
e70236a8 JB |
2702 | static void i830_update_wm(struct drm_device *dev, int planea_clock, int unused, |
2703 | int unused2, int pixel_size) | |
7662c8bd SL |
2704 | { |
2705 | struct drm_i915_private *dev_priv = dev->dev_private; | |
f3601326 | 2706 | uint32_t fwater_lo = I915_READ(FW_BLC) & ~0xfff; |
dff33cfc | 2707 | int planea_wm; |
7662c8bd | 2708 | |
e70236a8 | 2709 | i830_wm_info.fifo_size = dev_priv->display.get_fifo_size(dev, 0); |
7662c8bd | 2710 | |
dff33cfc JB |
2711 | planea_wm = intel_calculate_wm(planea_clock, &i830_wm_info, |
2712 | pixel_size, latency_ns); | |
f3601326 JB |
2713 | fwater_lo |= (3<<8) | planea_wm; |
2714 | ||
28c97730 | 2715 | DRM_DEBUG_KMS("Setting FIFO watermarks - A: %d\n", planea_wm); |
7662c8bd SL |
2716 | |
2717 | I915_WRITE(FW_BLC, fwater_lo); | |
2718 | } | |
2719 | ||
2720 | /** | |
2721 | * intel_update_watermarks - update FIFO watermark values based on current modes | |
2722 | * | |
2723 | * Calculate watermark values for the various WM regs based on current mode | |
2724 | * and plane configuration. | |
2725 | * | |
2726 | * There are several cases to deal with here: | |
2727 | * - normal (i.e. non-self-refresh) | |
2728 | * - self-refresh (SR) mode | |
2729 | * - lines are large relative to FIFO size (buffer can hold up to 2) | |
2730 | * - lines are small relative to FIFO size (buffer can hold more than 2 | |
2731 | * lines), so need to account for TLB latency | |
2732 | * | |
2733 | * The normal calculation is: | |
2734 | * watermark = dotclock * bytes per pixel * latency | |
2735 | * where latency is platform & configuration dependent (we assume pessimal | |
2736 | * values here). | |
2737 | * | |
2738 | * The SR calculation is: | |
2739 | * watermark = (trunc(latency/line time)+1) * surface width * | |
2740 | * bytes per pixel | |
2741 | * where | |
2742 | * line time = htotal / dotclock | |
2743 | * and latency is assumed to be high, as above. | |
2744 | * | |
2745 | * The final value programmed to the register should always be rounded up, | |
2746 | * and include an extra 2 entries to account for clock crossings. | |
2747 | * | |
2748 | * We don't use the sprite, so we can ignore that. And on Crestline we have | |
2749 | * to set the non-SR watermarks to 8. | |
2750 | */ | |
2751 | static void intel_update_watermarks(struct drm_device *dev) | |
2752 | { | |
e70236a8 | 2753 | struct drm_i915_private *dev_priv = dev->dev_private; |
7662c8bd SL |
2754 | struct drm_crtc *crtc; |
2755 | struct intel_crtc *intel_crtc; | |
2756 | int sr_hdisplay = 0; | |
2757 | unsigned long planea_clock = 0, planeb_clock = 0, sr_clock = 0; | |
2758 | int enabled = 0, pixel_size = 0; | |
2759 | ||
c03342fa ZW |
2760 | if (!dev_priv->display.update_wm) |
2761 | return; | |
2762 | ||
7662c8bd SL |
2763 | /* Get the clock config from both planes */ |
2764 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
2765 | intel_crtc = to_intel_crtc(crtc); | |
2766 | if (crtc->enabled) { | |
2767 | enabled++; | |
2768 | if (intel_crtc->plane == 0) { | |
28c97730 | 2769 | DRM_DEBUG_KMS("plane A (pipe %d) clock: %d\n", |
7662c8bd SL |
2770 | intel_crtc->pipe, crtc->mode.clock); |
2771 | planea_clock = crtc->mode.clock; | |
2772 | } else { | |
28c97730 | 2773 | DRM_DEBUG_KMS("plane B (pipe %d) clock: %d\n", |
7662c8bd SL |
2774 | intel_crtc->pipe, crtc->mode.clock); |
2775 | planeb_clock = crtc->mode.clock; | |
2776 | } | |
2777 | sr_hdisplay = crtc->mode.hdisplay; | |
2778 | sr_clock = crtc->mode.clock; | |
2779 | if (crtc->fb) | |
2780 | pixel_size = crtc->fb->bits_per_pixel / 8; | |
2781 | else | |
2782 | pixel_size = 4; /* by default */ | |
2783 | } | |
2784 | } | |
2785 | ||
2786 | if (enabled <= 0) | |
2787 | return; | |
2788 | ||
dff33cfc | 2789 | /* Single plane configs can enable self refresh */ |
7662c8bd SL |
2790 | if (enabled == 1 && IS_IGD(dev)) |
2791 | igd_enable_cxsr(dev, sr_clock, pixel_size); | |
2792 | else if (IS_IGD(dev)) | |
2793 | igd_disable_cxsr(dev); | |
2794 | ||
e70236a8 JB |
2795 | dev_priv->display.update_wm(dev, planea_clock, planeb_clock, |
2796 | sr_hdisplay, pixel_size); | |
7662c8bd SL |
2797 | } |
2798 | ||
5c3b82e2 CW |
2799 | static int intel_crtc_mode_set(struct drm_crtc *crtc, |
2800 | struct drm_display_mode *mode, | |
2801 | struct drm_display_mode *adjusted_mode, | |
2802 | int x, int y, | |
2803 | struct drm_framebuffer *old_fb) | |
79e53945 JB |
2804 | { |
2805 | struct drm_device *dev = crtc->dev; | |
2806 | struct drm_i915_private *dev_priv = dev->dev_private; | |
2807 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
2808 | int pipe = intel_crtc->pipe; | |
80824003 | 2809 | int plane = intel_crtc->plane; |
79e53945 JB |
2810 | int fp_reg = (pipe == 0) ? FPA0 : FPB0; |
2811 | int dpll_reg = (pipe == 0) ? DPLL_A : DPLL_B; | |
2812 | int dpll_md_reg = (intel_crtc->pipe == 0) ? DPLL_A_MD : DPLL_B_MD; | |
80824003 | 2813 | int dspcntr_reg = (plane == 0) ? DSPACNTR : DSPBCNTR; |
79e53945 JB |
2814 | int pipeconf_reg = (pipe == 0) ? PIPEACONF : PIPEBCONF; |
2815 | int htot_reg = (pipe == 0) ? HTOTAL_A : HTOTAL_B; | |
2816 | int hblank_reg = (pipe == 0) ? HBLANK_A : HBLANK_B; | |
2817 | int hsync_reg = (pipe == 0) ? HSYNC_A : HSYNC_B; | |
2818 | int vtot_reg = (pipe == 0) ? VTOTAL_A : VTOTAL_B; | |
2819 | int vblank_reg = (pipe == 0) ? VBLANK_A : VBLANK_B; | |
2820 | int vsync_reg = (pipe == 0) ? VSYNC_A : VSYNC_B; | |
80824003 JB |
2821 | int dspsize_reg = (plane == 0) ? DSPASIZE : DSPBSIZE; |
2822 | int dsppos_reg = (plane == 0) ? DSPAPOS : DSPBPOS; | |
79e53945 | 2823 | int pipesrc_reg = (pipe == 0) ? PIPEASRC : PIPEBSRC; |
43565a06 | 2824 | int refclk, num_outputs = 0; |
652c393a JB |
2825 | intel_clock_t clock, reduced_clock; |
2826 | u32 dpll = 0, fp = 0, fp2 = 0, dspcntr, pipeconf; | |
2827 | bool ok, has_reduced_clock = false, is_sdvo = false, is_dvo = false; | |
a4fc5ed6 | 2828 | bool is_crt = false, is_lvds = false, is_tv = false, is_dp = false; |
32f9d658 | 2829 | bool is_edp = false; |
79e53945 JB |
2830 | struct drm_mode_config *mode_config = &dev->mode_config; |
2831 | struct drm_connector *connector; | |
d4906093 | 2832 | const intel_limit_t *limit; |
5c3b82e2 | 2833 | int ret; |
2c07245f ZW |
2834 | struct fdi_m_n m_n = {0}; |
2835 | int data_m1_reg = (pipe == 0) ? PIPEA_DATA_M1 : PIPEB_DATA_M1; | |
2836 | int data_n1_reg = (pipe == 0) ? PIPEA_DATA_N1 : PIPEB_DATA_N1; | |
2837 | int link_m1_reg = (pipe == 0) ? PIPEA_LINK_M1 : PIPEB_LINK_M1; | |
2838 | int link_n1_reg = (pipe == 0) ? PIPEA_LINK_N1 : PIPEB_LINK_N1; | |
2839 | int pch_fp_reg = (pipe == 0) ? PCH_FPA0 : PCH_FPB0; | |
2840 | int pch_dpll_reg = (pipe == 0) ? PCH_DPLL_A : PCH_DPLL_B; | |
2841 | int fdi_rx_reg = (pipe == 0) ? FDI_RXA_CTL : FDI_RXB_CTL; | |
541998a1 | 2842 | int lvds_reg = LVDS; |
2c07245f ZW |
2843 | u32 temp; |
2844 | int sdvo_pixel_multiply; | |
5eb08b69 | 2845 | int target_clock; |
79e53945 JB |
2846 | |
2847 | drm_vblank_pre_modeset(dev, pipe); | |
2848 | ||
2849 | list_for_each_entry(connector, &mode_config->connector_list, head) { | |
2850 | struct intel_output *intel_output = to_intel_output(connector); | |
2851 | ||
2852 | if (!connector->encoder || connector->encoder->crtc != crtc) | |
2853 | continue; | |
2854 | ||
2855 | switch (intel_output->type) { | |
2856 | case INTEL_OUTPUT_LVDS: | |
2857 | is_lvds = true; | |
2858 | break; | |
2859 | case INTEL_OUTPUT_SDVO: | |
7d57382e | 2860 | case INTEL_OUTPUT_HDMI: |
79e53945 | 2861 | is_sdvo = true; |
e2f0ba97 JB |
2862 | if (intel_output->needs_tv_clock) |
2863 | is_tv = true; | |
79e53945 JB |
2864 | break; |
2865 | case INTEL_OUTPUT_DVO: | |
2866 | is_dvo = true; | |
2867 | break; | |
2868 | case INTEL_OUTPUT_TVOUT: | |
2869 | is_tv = true; | |
2870 | break; | |
2871 | case INTEL_OUTPUT_ANALOG: | |
2872 | is_crt = true; | |
2873 | break; | |
a4fc5ed6 KP |
2874 | case INTEL_OUTPUT_DISPLAYPORT: |
2875 | is_dp = true; | |
2876 | break; | |
32f9d658 ZW |
2877 | case INTEL_OUTPUT_EDP: |
2878 | is_edp = true; | |
2879 | break; | |
79e53945 | 2880 | } |
43565a06 KH |
2881 | |
2882 | num_outputs++; | |
79e53945 JB |
2883 | } |
2884 | ||
43565a06 KH |
2885 | if (is_lvds && dev_priv->lvds_use_ssc && num_outputs < 2) { |
2886 | refclk = dev_priv->lvds_ssc_freq * 1000; | |
28c97730 ZY |
2887 | DRM_DEBUG_KMS("using SSC reference clock of %d MHz\n", |
2888 | refclk / 1000); | |
43565a06 | 2889 | } else if (IS_I9XX(dev)) { |
79e53945 | 2890 | refclk = 96000; |
2c07245f ZW |
2891 | if (IS_IGDNG(dev)) |
2892 | refclk = 120000; /* 120Mhz refclk */ | |
79e53945 JB |
2893 | } else { |
2894 | refclk = 48000; | |
2895 | } | |
a4fc5ed6 | 2896 | |
79e53945 | 2897 | |
d4906093 ML |
2898 | /* |
2899 | * Returns a set of divisors for the desired target clock with the given | |
2900 | * refclk, or FALSE. The returned values represent the clock equation: | |
2901 | * reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2. | |
2902 | */ | |
2903 | limit = intel_limit(crtc); | |
2904 | ok = limit->find_pll(limit, crtc, adjusted_mode->clock, refclk, &clock); | |
79e53945 JB |
2905 | if (!ok) { |
2906 | DRM_ERROR("Couldn't find PLL settings for mode!\n"); | |
1f803ee5 | 2907 | drm_vblank_post_modeset(dev, pipe); |
5c3b82e2 | 2908 | return -EINVAL; |
79e53945 JB |
2909 | } |
2910 | ||
18f9ed12 ZY |
2911 | if (is_lvds && limit->find_reduced_pll && |
2912 | dev_priv->lvds_downclock_avail) { | |
652c393a JB |
2913 | memcpy(&reduced_clock, &clock, sizeof(intel_clock_t)); |
2914 | has_reduced_clock = limit->find_reduced_pll(limit, crtc, | |
18f9ed12 | 2915 | dev_priv->lvds_downclock, |
652c393a JB |
2916 | refclk, |
2917 | &reduced_clock); | |
18f9ed12 ZY |
2918 | if (has_reduced_clock && (clock.p != reduced_clock.p)) { |
2919 | /* | |
2920 | * If the different P is found, it means that we can't | |
2921 | * switch the display clock by using the FP0/FP1. | |
2922 | * In such case we will disable the LVDS downclock | |
2923 | * feature. | |
2924 | */ | |
2925 | DRM_DEBUG_KMS("Different P is found for " | |
2926 | "LVDS clock/downclock\n"); | |
2927 | has_reduced_clock = 0; | |
2928 | } | |
652c393a | 2929 | } |
7026d4ac ZW |
2930 | /* SDVO TV has fixed PLL values depend on its clock range, |
2931 | this mirrors vbios setting. */ | |
2932 | if (is_sdvo && is_tv) { | |
2933 | if (adjusted_mode->clock >= 100000 | |
2934 | && adjusted_mode->clock < 140500) { | |
2935 | clock.p1 = 2; | |
2936 | clock.p2 = 10; | |
2937 | clock.n = 3; | |
2938 | clock.m1 = 16; | |
2939 | clock.m2 = 8; | |
2940 | } else if (adjusted_mode->clock >= 140500 | |
2941 | && adjusted_mode->clock <= 200000) { | |
2942 | clock.p1 = 1; | |
2943 | clock.p2 = 10; | |
2944 | clock.n = 6; | |
2945 | clock.m1 = 12; | |
2946 | clock.m2 = 8; | |
2947 | } | |
2948 | } | |
2949 | ||
2c07245f | 2950 | /* FDI link */ |
5eb08b69 | 2951 | if (IS_IGDNG(dev)) { |
58a27471 | 2952 | int lane, link_bw, bpp; |
32f9d658 ZW |
2953 | /* eDP doesn't require FDI link, so just set DP M/N |
2954 | according to current link config */ | |
2955 | if (is_edp) { | |
2956 | struct drm_connector *edp; | |
5eb08b69 | 2957 | target_clock = mode->clock; |
32f9d658 ZW |
2958 | edp = intel_pipe_get_output(crtc); |
2959 | intel_edp_link_config(to_intel_output(edp), | |
2960 | &lane, &link_bw); | |
2961 | } else { | |
2962 | /* DP over FDI requires target mode clock | |
2963 | instead of link clock */ | |
2964 | if (is_dp) | |
2965 | target_clock = mode->clock; | |
2966 | else | |
2967 | target_clock = adjusted_mode->clock; | |
2968 | lane = 4; | |
2969 | link_bw = 270000; | |
2970 | } | |
58a27471 ZW |
2971 | |
2972 | /* determine panel color depth */ | |
2973 | temp = I915_READ(pipeconf_reg); | |
2974 | ||
2975 | switch (temp & PIPE_BPC_MASK) { | |
2976 | case PIPE_8BPC: | |
2977 | bpp = 24; | |
2978 | break; | |
2979 | case PIPE_10BPC: | |
2980 | bpp = 30; | |
2981 | break; | |
2982 | case PIPE_6BPC: | |
2983 | bpp = 18; | |
2984 | break; | |
2985 | case PIPE_12BPC: | |
2986 | bpp = 36; | |
2987 | break; | |
2988 | default: | |
2989 | DRM_ERROR("unknown pipe bpc value\n"); | |
2990 | bpp = 24; | |
2991 | } | |
2992 | ||
2993 | igdng_compute_m_n(bpp, lane, target_clock, | |
32f9d658 | 2994 | link_bw, &m_n); |
5eb08b69 | 2995 | } |
2c07245f | 2996 | |
c038e51e ZW |
2997 | /* Ironlake: try to setup display ref clock before DPLL |
2998 | * enabling. This is only under driver's control after | |
2999 | * PCH B stepping, previous chipset stepping should be | |
3000 | * ignoring this setting. | |
3001 | */ | |
3002 | if (IS_IGDNG(dev)) { | |
3003 | temp = I915_READ(PCH_DREF_CONTROL); | |
3004 | /* Always enable nonspread source */ | |
3005 | temp &= ~DREF_NONSPREAD_SOURCE_MASK; | |
3006 | temp |= DREF_NONSPREAD_SOURCE_ENABLE; | |
3007 | I915_WRITE(PCH_DREF_CONTROL, temp); | |
3008 | POSTING_READ(PCH_DREF_CONTROL); | |
3009 | ||
3010 | temp &= ~DREF_SSC_SOURCE_MASK; | |
3011 | temp |= DREF_SSC_SOURCE_ENABLE; | |
3012 | I915_WRITE(PCH_DREF_CONTROL, temp); | |
3013 | POSTING_READ(PCH_DREF_CONTROL); | |
3014 | ||
3015 | udelay(200); | |
3016 | ||
3017 | if (is_edp) { | |
3018 | if (dev_priv->lvds_use_ssc) { | |
3019 | temp |= DREF_SSC1_ENABLE; | |
3020 | I915_WRITE(PCH_DREF_CONTROL, temp); | |
3021 | POSTING_READ(PCH_DREF_CONTROL); | |
3022 | ||
3023 | udelay(200); | |
3024 | ||
3025 | temp &= ~DREF_CPU_SOURCE_OUTPUT_MASK; | |
3026 | temp |= DREF_CPU_SOURCE_OUTPUT_DOWNSPREAD; | |
3027 | I915_WRITE(PCH_DREF_CONTROL, temp); | |
3028 | POSTING_READ(PCH_DREF_CONTROL); | |
3029 | } else { | |
3030 | temp |= DREF_CPU_SOURCE_OUTPUT_NONSPREAD; | |
3031 | I915_WRITE(PCH_DREF_CONTROL, temp); | |
3032 | POSTING_READ(PCH_DREF_CONTROL); | |
3033 | } | |
3034 | } | |
3035 | } | |
3036 | ||
652c393a | 3037 | if (IS_IGD(dev)) { |
2177832f | 3038 | fp = (1 << clock.n) << 16 | clock.m1 << 8 | clock.m2; |
652c393a JB |
3039 | if (has_reduced_clock) |
3040 | fp2 = (1 << reduced_clock.n) << 16 | | |
3041 | reduced_clock.m1 << 8 | reduced_clock.m2; | |
3042 | } else { | |
2177832f | 3043 | fp = clock.n << 16 | clock.m1 << 8 | clock.m2; |
652c393a JB |
3044 | if (has_reduced_clock) |
3045 | fp2 = reduced_clock.n << 16 | reduced_clock.m1 << 8 | | |
3046 | reduced_clock.m2; | |
3047 | } | |
79e53945 | 3048 | |
2c07245f ZW |
3049 | if (!IS_IGDNG(dev)) |
3050 | dpll = DPLL_VGA_MODE_DIS; | |
3051 | ||
79e53945 JB |
3052 | if (IS_I9XX(dev)) { |
3053 | if (is_lvds) | |
3054 | dpll |= DPLLB_MODE_LVDS; | |
3055 | else | |
3056 | dpll |= DPLLB_MODE_DAC_SERIAL; | |
3057 | if (is_sdvo) { | |
3058 | dpll |= DPLL_DVO_HIGH_SPEED; | |
2c07245f | 3059 | sdvo_pixel_multiply = adjusted_mode->clock / mode->clock; |
942642a4 | 3060 | if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev)) |
79e53945 | 3061 | dpll |= (sdvo_pixel_multiply - 1) << SDVO_MULTIPLIER_SHIFT_HIRES; |
2c07245f ZW |
3062 | else if (IS_IGDNG(dev)) |
3063 | dpll |= (sdvo_pixel_multiply - 1) << PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT; | |
79e53945 | 3064 | } |
a4fc5ed6 KP |
3065 | if (is_dp) |
3066 | dpll |= DPLL_DVO_HIGH_SPEED; | |
79e53945 JB |
3067 | |
3068 | /* compute bitmask from p1 value */ | |
2177832f SL |
3069 | if (IS_IGD(dev)) |
3070 | dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT_IGD; | |
2c07245f | 3071 | else { |
2177832f | 3072 | dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT; |
2c07245f ZW |
3073 | /* also FPA1 */ |
3074 | if (IS_IGDNG(dev)) | |
3075 | dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT; | |
652c393a JB |
3076 | if (IS_G4X(dev) && has_reduced_clock) |
3077 | dpll |= (1 << (reduced_clock.p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT; | |
2c07245f | 3078 | } |
79e53945 JB |
3079 | switch (clock.p2) { |
3080 | case 5: | |
3081 | dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5; | |
3082 | break; | |
3083 | case 7: | |
3084 | dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7; | |
3085 | break; | |
3086 | case 10: | |
3087 | dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10; | |
3088 | break; | |
3089 | case 14: | |
3090 | dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14; | |
3091 | break; | |
3092 | } | |
2c07245f | 3093 | if (IS_I965G(dev) && !IS_IGDNG(dev)) |
79e53945 JB |
3094 | dpll |= (6 << PLL_LOAD_PULSE_PHASE_SHIFT); |
3095 | } else { | |
3096 | if (is_lvds) { | |
3097 | dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT; | |
3098 | } else { | |
3099 | if (clock.p1 == 2) | |
3100 | dpll |= PLL_P1_DIVIDE_BY_TWO; | |
3101 | else | |
3102 | dpll |= (clock.p1 - 2) << DPLL_FPA01_P1_POST_DIV_SHIFT; | |
3103 | if (clock.p2 == 4) | |
3104 | dpll |= PLL_P2_DIVIDE_BY_4; | |
3105 | } | |
3106 | } | |
3107 | ||
43565a06 KH |
3108 | if (is_sdvo && is_tv) |
3109 | dpll |= PLL_REF_INPUT_TVCLKINBC; | |
3110 | else if (is_tv) | |
79e53945 | 3111 | /* XXX: just matching BIOS for now */ |
43565a06 | 3112 | /* dpll |= PLL_REF_INPUT_TVCLKINBC; */ |
79e53945 | 3113 | dpll |= 3; |
43565a06 KH |
3114 | else if (is_lvds && dev_priv->lvds_use_ssc && num_outputs < 2) |
3115 | dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN; | |
79e53945 JB |
3116 | else |
3117 | dpll |= PLL_REF_INPUT_DREFCLK; | |
3118 | ||
3119 | /* setup pipeconf */ | |
3120 | pipeconf = I915_READ(pipeconf_reg); | |
3121 | ||
3122 | /* Set up the display plane register */ | |
3123 | dspcntr = DISPPLANE_GAMMA_ENABLE; | |
3124 | ||
2c07245f ZW |
3125 | /* IGDNG's plane is forced to pipe, bit 24 is to |
3126 | enable color space conversion */ | |
3127 | if (!IS_IGDNG(dev)) { | |
3128 | if (pipe == 0) | |
80824003 | 3129 | dspcntr &= ~DISPPLANE_SEL_PIPE_MASK; |
2c07245f ZW |
3130 | else |
3131 | dspcntr |= DISPPLANE_SEL_PIPE_B; | |
3132 | } | |
79e53945 JB |
3133 | |
3134 | if (pipe == 0 && !IS_I965G(dev)) { | |
3135 | /* Enable pixel doubling when the dot clock is > 90% of the (display) | |
3136 | * core speed. | |
3137 | * | |
3138 | * XXX: No double-wide on 915GM pipe B. Is that the only reason for the | |
3139 | * pipe == 0 check? | |
3140 | */ | |
e70236a8 JB |
3141 | if (mode->clock > |
3142 | dev_priv->display.get_display_clock_speed(dev) * 9 / 10) | |
79e53945 JB |
3143 | pipeconf |= PIPEACONF_DOUBLE_WIDE; |
3144 | else | |
3145 | pipeconf &= ~PIPEACONF_DOUBLE_WIDE; | |
3146 | } | |
3147 | ||
3148 | dspcntr |= DISPLAY_PLANE_ENABLE; | |
3149 | pipeconf |= PIPEACONF_ENABLE; | |
3150 | dpll |= DPLL_VCO_ENABLE; | |
3151 | ||
3152 | ||
3153 | /* Disable the panel fitter if it was on our pipe */ | |
2c07245f | 3154 | if (!IS_IGDNG(dev) && intel_panel_fitter_pipe(dev) == pipe) |
79e53945 JB |
3155 | I915_WRITE(PFIT_CONTROL, 0); |
3156 | ||
28c97730 | 3157 | DRM_DEBUG_KMS("Mode for pipe %c:\n", pipe == 0 ? 'A' : 'B'); |
79e53945 JB |
3158 | drm_mode_debug_printmodeline(mode); |
3159 | ||
2c07245f ZW |
3160 | /* assign to IGDNG registers */ |
3161 | if (IS_IGDNG(dev)) { | |
3162 | fp_reg = pch_fp_reg; | |
3163 | dpll_reg = pch_dpll_reg; | |
3164 | } | |
79e53945 | 3165 | |
32f9d658 ZW |
3166 | if (is_edp) { |
3167 | igdng_disable_pll_edp(crtc); | |
3168 | } else if ((dpll & DPLL_VCO_ENABLE)) { | |
79e53945 JB |
3169 | I915_WRITE(fp_reg, fp); |
3170 | I915_WRITE(dpll_reg, dpll & ~DPLL_VCO_ENABLE); | |
3171 | I915_READ(dpll_reg); | |
3172 | udelay(150); | |
3173 | } | |
3174 | ||
3175 | /* The LVDS pin pair needs to be on before the DPLLs are enabled. | |
3176 | * This is an exception to the general rule that mode_set doesn't turn | |
3177 | * things on. | |
3178 | */ | |
3179 | if (is_lvds) { | |
541998a1 | 3180 | u32 lvds; |
79e53945 | 3181 | |
541998a1 ZW |
3182 | if (IS_IGDNG(dev)) |
3183 | lvds_reg = PCH_LVDS; | |
3184 | ||
3185 | lvds = I915_READ(lvds_reg); | |
79e53945 | 3186 | lvds |= LVDS_PORT_EN | LVDS_A0A2_CLKA_POWER_UP | LVDS_PIPEB_SELECT; |
a3e17eb8 ZY |
3187 | /* set the corresponsding LVDS_BORDER bit */ |
3188 | lvds |= dev_priv->lvds_border_bits; | |
79e53945 JB |
3189 | /* Set the B0-B3 data pairs corresponding to whether we're going to |
3190 | * set the DPLLs for dual-channel mode or not. | |
3191 | */ | |
3192 | if (clock.p2 == 7) | |
3193 | lvds |= LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP; | |
3194 | else | |
3195 | lvds &= ~(LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP); | |
3196 | ||
3197 | /* It would be nice to set 24 vs 18-bit mode (LVDS_A3_POWER_UP) | |
3198 | * appropriately here, but we need to look more thoroughly into how | |
3199 | * panels behave in the two modes. | |
3200 | */ | |
3201 | ||
541998a1 ZW |
3202 | I915_WRITE(lvds_reg, lvds); |
3203 | I915_READ(lvds_reg); | |
79e53945 | 3204 | } |
a4fc5ed6 KP |
3205 | if (is_dp) |
3206 | intel_dp_set_m_n(crtc, mode, adjusted_mode); | |
79e53945 | 3207 | |
32f9d658 ZW |
3208 | if (!is_edp) { |
3209 | I915_WRITE(fp_reg, fp); | |
79e53945 | 3210 | I915_WRITE(dpll_reg, dpll); |
32f9d658 ZW |
3211 | I915_READ(dpll_reg); |
3212 | /* Wait for the clocks to stabilize. */ | |
3213 | udelay(150); | |
3214 | ||
3215 | if (IS_I965G(dev) && !IS_IGDNG(dev)) { | |
bb66c512 ZY |
3216 | if (is_sdvo) { |
3217 | sdvo_pixel_multiply = adjusted_mode->clock / mode->clock; | |
3218 | I915_WRITE(dpll_md_reg, (0 << DPLL_MD_UDI_DIVIDER_SHIFT) | | |
32f9d658 | 3219 | ((sdvo_pixel_multiply - 1) << DPLL_MD_UDI_MULTIPLIER_SHIFT)); |
bb66c512 ZY |
3220 | } else |
3221 | I915_WRITE(dpll_md_reg, 0); | |
32f9d658 ZW |
3222 | } else { |
3223 | /* write it again -- the BIOS does, after all */ | |
3224 | I915_WRITE(dpll_reg, dpll); | |
3225 | } | |
3226 | I915_READ(dpll_reg); | |
3227 | /* Wait for the clocks to stabilize. */ | |
3228 | udelay(150); | |
79e53945 | 3229 | } |
79e53945 | 3230 | |
652c393a JB |
3231 | if (is_lvds && has_reduced_clock && i915_powersave) { |
3232 | I915_WRITE(fp_reg + 4, fp2); | |
3233 | intel_crtc->lowfreq_avail = true; | |
3234 | if (HAS_PIPE_CXSR(dev)) { | |
28c97730 | 3235 | DRM_DEBUG_KMS("enabling CxSR downclocking\n"); |
652c393a JB |
3236 | pipeconf |= PIPECONF_CXSR_DOWNCLOCK; |
3237 | } | |
3238 | } else { | |
3239 | I915_WRITE(fp_reg + 4, fp); | |
3240 | intel_crtc->lowfreq_avail = false; | |
3241 | if (HAS_PIPE_CXSR(dev)) { | |
28c97730 | 3242 | DRM_DEBUG_KMS("disabling CxSR downclocking\n"); |
652c393a JB |
3243 | pipeconf &= ~PIPECONF_CXSR_DOWNCLOCK; |
3244 | } | |
3245 | } | |
3246 | ||
79e53945 JB |
3247 | I915_WRITE(htot_reg, (adjusted_mode->crtc_hdisplay - 1) | |
3248 | ((adjusted_mode->crtc_htotal - 1) << 16)); | |
3249 | I915_WRITE(hblank_reg, (adjusted_mode->crtc_hblank_start - 1) | | |
3250 | ((adjusted_mode->crtc_hblank_end - 1) << 16)); | |
3251 | I915_WRITE(hsync_reg, (adjusted_mode->crtc_hsync_start - 1) | | |
3252 | ((adjusted_mode->crtc_hsync_end - 1) << 16)); | |
3253 | I915_WRITE(vtot_reg, (adjusted_mode->crtc_vdisplay - 1) | | |
3254 | ((adjusted_mode->crtc_vtotal - 1) << 16)); | |
3255 | I915_WRITE(vblank_reg, (adjusted_mode->crtc_vblank_start - 1) | | |
3256 | ((adjusted_mode->crtc_vblank_end - 1) << 16)); | |
3257 | I915_WRITE(vsync_reg, (adjusted_mode->crtc_vsync_start - 1) | | |
3258 | ((adjusted_mode->crtc_vsync_end - 1) << 16)); | |
3259 | /* pipesrc and dspsize control the size that is scaled from, which should | |
3260 | * always be the user's requested size. | |
3261 | */ | |
2c07245f ZW |
3262 | if (!IS_IGDNG(dev)) { |
3263 | I915_WRITE(dspsize_reg, ((mode->vdisplay - 1) << 16) | | |
3264 | (mode->hdisplay - 1)); | |
3265 | I915_WRITE(dsppos_reg, 0); | |
3266 | } | |
79e53945 | 3267 | I915_WRITE(pipesrc_reg, ((mode->hdisplay - 1) << 16) | (mode->vdisplay - 1)); |
2c07245f ZW |
3268 | |
3269 | if (IS_IGDNG(dev)) { | |
3270 | I915_WRITE(data_m1_reg, TU_SIZE(m_n.tu) | m_n.gmch_m); | |
3271 | I915_WRITE(data_n1_reg, TU_SIZE(m_n.tu) | m_n.gmch_n); | |
3272 | I915_WRITE(link_m1_reg, m_n.link_m); | |
3273 | I915_WRITE(link_n1_reg, m_n.link_n); | |
3274 | ||
32f9d658 ZW |
3275 | if (is_edp) { |
3276 | igdng_set_pll_edp(crtc, adjusted_mode->clock); | |
3277 | } else { | |
3278 | /* enable FDI RX PLL too */ | |
3279 | temp = I915_READ(fdi_rx_reg); | |
3280 | I915_WRITE(fdi_rx_reg, temp | FDI_RX_PLL_ENABLE); | |
3281 | udelay(200); | |
3282 | } | |
2c07245f ZW |
3283 | } |
3284 | ||
79e53945 JB |
3285 | I915_WRITE(pipeconf_reg, pipeconf); |
3286 | I915_READ(pipeconf_reg); | |
3287 | ||
3288 | intel_wait_for_vblank(dev); | |
3289 | ||
553bd149 ZW |
3290 | if (IS_IGDNG(dev)) { |
3291 | /* enable address swizzle for tiling buffer */ | |
3292 | temp = I915_READ(DISP_ARB_CTL); | |
3293 | I915_WRITE(DISP_ARB_CTL, temp | DISP_TILE_SURFACE_SWIZZLING); | |
3294 | } | |
3295 | ||
79e53945 JB |
3296 | I915_WRITE(dspcntr_reg, dspcntr); |
3297 | ||
3298 | /* Flush the plane changes */ | |
5c3b82e2 | 3299 | ret = intel_pipe_set_base(crtc, x, y, old_fb); |
7662c8bd | 3300 | |
74dff282 JB |
3301 | if ((IS_I965G(dev) || plane == 0)) |
3302 | intel_update_fbc(crtc, &crtc->mode); | |
e70236a8 | 3303 | |
7662c8bd SL |
3304 | intel_update_watermarks(dev); |
3305 | ||
79e53945 | 3306 | drm_vblank_post_modeset(dev, pipe); |
5c3b82e2 | 3307 | |
1f803ee5 | 3308 | return ret; |
79e53945 JB |
3309 | } |
3310 | ||
3311 | /** Loads the palette/gamma unit for the CRTC with the prepared values */ | |
3312 | void intel_crtc_load_lut(struct drm_crtc *crtc) | |
3313 | { | |
3314 | struct drm_device *dev = crtc->dev; | |
3315 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3316 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
3317 | int palreg = (intel_crtc->pipe == 0) ? PALETTE_A : PALETTE_B; | |
3318 | int i; | |
3319 | ||
3320 | /* The clocks have to be on to load the palette. */ | |
3321 | if (!crtc->enabled) | |
3322 | return; | |
3323 | ||
2c07245f ZW |
3324 | /* use legacy palette for IGDNG */ |
3325 | if (IS_IGDNG(dev)) | |
3326 | palreg = (intel_crtc->pipe == 0) ? LGC_PALETTE_A : | |
3327 | LGC_PALETTE_B; | |
3328 | ||
79e53945 JB |
3329 | for (i = 0; i < 256; i++) { |
3330 | I915_WRITE(palreg + 4 * i, | |
3331 | (intel_crtc->lut_r[i] << 16) | | |
3332 | (intel_crtc->lut_g[i] << 8) | | |
3333 | intel_crtc->lut_b[i]); | |
3334 | } | |
3335 | } | |
3336 | ||
3337 | static int intel_crtc_cursor_set(struct drm_crtc *crtc, | |
3338 | struct drm_file *file_priv, | |
3339 | uint32_t handle, | |
3340 | uint32_t width, uint32_t height) | |
3341 | { | |
3342 | struct drm_device *dev = crtc->dev; | |
3343 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3344 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
3345 | struct drm_gem_object *bo; | |
3346 | struct drm_i915_gem_object *obj_priv; | |
3347 | int pipe = intel_crtc->pipe; | |
3348 | uint32_t control = (pipe == 0) ? CURACNTR : CURBCNTR; | |
3349 | uint32_t base = (pipe == 0) ? CURABASE : CURBBASE; | |
14b60391 | 3350 | uint32_t temp = I915_READ(control); |
79e53945 | 3351 | size_t addr; |
3f8bc370 | 3352 | int ret; |
79e53945 | 3353 | |
28c97730 | 3354 | DRM_DEBUG_KMS("\n"); |
79e53945 JB |
3355 | |
3356 | /* if we want to turn off the cursor ignore width and height */ | |
3357 | if (!handle) { | |
28c97730 | 3358 | DRM_DEBUG_KMS("cursor off\n"); |
14b60391 JB |
3359 | if (IS_MOBILE(dev) || IS_I9XX(dev)) { |
3360 | temp &= ~(CURSOR_MODE | MCURSOR_GAMMA_ENABLE); | |
3361 | temp |= CURSOR_MODE_DISABLE; | |
3362 | } else { | |
3363 | temp &= ~(CURSOR_ENABLE | CURSOR_GAMMA_ENABLE); | |
3364 | } | |
3f8bc370 KH |
3365 | addr = 0; |
3366 | bo = NULL; | |
5004417d | 3367 | mutex_lock(&dev->struct_mutex); |
3f8bc370 | 3368 | goto finish; |
79e53945 JB |
3369 | } |
3370 | ||
3371 | /* Currently we only support 64x64 cursors */ | |
3372 | if (width != 64 || height != 64) { | |
3373 | DRM_ERROR("we currently only support 64x64 cursors\n"); | |
3374 | return -EINVAL; | |
3375 | } | |
3376 | ||
3377 | bo = drm_gem_object_lookup(dev, file_priv, handle); | |
3378 | if (!bo) | |
3379 | return -ENOENT; | |
3380 | ||
3381 | obj_priv = bo->driver_private; | |
3382 | ||
3383 | if (bo->size < width * height * 4) { | |
3384 | DRM_ERROR("buffer is to small\n"); | |
34b8686e DA |
3385 | ret = -ENOMEM; |
3386 | goto fail; | |
79e53945 JB |
3387 | } |
3388 | ||
71acb5eb | 3389 | /* we only need to pin inside GTT if cursor is non-phy */ |
7f9872e0 | 3390 | mutex_lock(&dev->struct_mutex); |
71acb5eb DA |
3391 | if (!dev_priv->cursor_needs_physical) { |
3392 | ret = i915_gem_object_pin(bo, PAGE_SIZE); | |
3393 | if (ret) { | |
3394 | DRM_ERROR("failed to pin cursor bo\n"); | |
7f9872e0 | 3395 | goto fail_locked; |
71acb5eb | 3396 | } |
79e53945 | 3397 | addr = obj_priv->gtt_offset; |
71acb5eb DA |
3398 | } else { |
3399 | ret = i915_gem_attach_phys_object(dev, bo, (pipe == 0) ? I915_GEM_PHYS_CURSOR_0 : I915_GEM_PHYS_CURSOR_1); | |
3400 | if (ret) { | |
3401 | DRM_ERROR("failed to attach phys object\n"); | |
7f9872e0 | 3402 | goto fail_locked; |
71acb5eb DA |
3403 | } |
3404 | addr = obj_priv->phys_obj->handle->busaddr; | |
3f8bc370 KH |
3405 | } |
3406 | ||
14b60391 JB |
3407 | if (!IS_I9XX(dev)) |
3408 | I915_WRITE(CURSIZE, (height << 12) | width); | |
3409 | ||
3410 | /* Hooray for CUR*CNTR differences */ | |
3411 | if (IS_MOBILE(dev) || IS_I9XX(dev)) { | |
3412 | temp &= ~(CURSOR_MODE | MCURSOR_PIPE_SELECT); | |
3413 | temp |= CURSOR_MODE_64_ARGB_AX | MCURSOR_GAMMA_ENABLE; | |
3414 | temp |= (pipe << 28); /* Connect to correct pipe */ | |
3415 | } else { | |
3416 | temp &= ~(CURSOR_FORMAT_MASK); | |
3417 | temp |= CURSOR_ENABLE; | |
3418 | temp |= CURSOR_FORMAT_ARGB | CURSOR_GAMMA_ENABLE; | |
3419 | } | |
79e53945 | 3420 | |
3f8bc370 | 3421 | finish: |
79e53945 JB |
3422 | I915_WRITE(control, temp); |
3423 | I915_WRITE(base, addr); | |
3424 | ||
3f8bc370 | 3425 | if (intel_crtc->cursor_bo) { |
71acb5eb DA |
3426 | if (dev_priv->cursor_needs_physical) { |
3427 | if (intel_crtc->cursor_bo != bo) | |
3428 | i915_gem_detach_phys_object(dev, intel_crtc->cursor_bo); | |
3429 | } else | |
3430 | i915_gem_object_unpin(intel_crtc->cursor_bo); | |
3f8bc370 KH |
3431 | drm_gem_object_unreference(intel_crtc->cursor_bo); |
3432 | } | |
80824003 | 3433 | |
7f9872e0 | 3434 | mutex_unlock(&dev->struct_mutex); |
3f8bc370 KH |
3435 | |
3436 | intel_crtc->cursor_addr = addr; | |
3437 | intel_crtc->cursor_bo = bo; | |
3438 | ||
79e53945 | 3439 | return 0; |
34b8686e DA |
3440 | fail: |
3441 | mutex_lock(&dev->struct_mutex); | |
7f9872e0 | 3442 | fail_locked: |
34b8686e DA |
3443 | drm_gem_object_unreference(bo); |
3444 | mutex_unlock(&dev->struct_mutex); | |
3445 | return ret; | |
79e53945 JB |
3446 | } |
3447 | ||
3448 | static int intel_crtc_cursor_move(struct drm_crtc *crtc, int x, int y) | |
3449 | { | |
3450 | struct drm_device *dev = crtc->dev; | |
3451 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3452 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
652c393a | 3453 | struct intel_framebuffer *intel_fb; |
79e53945 JB |
3454 | int pipe = intel_crtc->pipe; |
3455 | uint32_t temp = 0; | |
3456 | uint32_t adder; | |
3457 | ||
652c393a JB |
3458 | if (crtc->fb) { |
3459 | intel_fb = to_intel_framebuffer(crtc->fb); | |
3460 | intel_mark_busy(dev, intel_fb->obj); | |
3461 | } | |
3462 | ||
79e53945 | 3463 | if (x < 0) { |
2245fda8 | 3464 | temp |= CURSOR_POS_SIGN << CURSOR_X_SHIFT; |
79e53945 JB |
3465 | x = -x; |
3466 | } | |
3467 | if (y < 0) { | |
2245fda8 | 3468 | temp |= CURSOR_POS_SIGN << CURSOR_Y_SHIFT; |
79e53945 JB |
3469 | y = -y; |
3470 | } | |
3471 | ||
2245fda8 KP |
3472 | temp |= x << CURSOR_X_SHIFT; |
3473 | temp |= y << CURSOR_Y_SHIFT; | |
79e53945 JB |
3474 | |
3475 | adder = intel_crtc->cursor_addr; | |
3476 | I915_WRITE((pipe == 0) ? CURAPOS : CURBPOS, temp); | |
3477 | I915_WRITE((pipe == 0) ? CURABASE : CURBBASE, adder); | |
3478 | ||
3479 | return 0; | |
3480 | } | |
3481 | ||
3482 | /** Sets the color ramps on behalf of RandR */ | |
3483 | void intel_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green, | |
3484 | u16 blue, int regno) | |
3485 | { | |
3486 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
3487 | ||
3488 | intel_crtc->lut_r[regno] = red >> 8; | |
3489 | intel_crtc->lut_g[regno] = green >> 8; | |
3490 | intel_crtc->lut_b[regno] = blue >> 8; | |
3491 | } | |
3492 | ||
b8c00ac5 DA |
3493 | void intel_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green, |
3494 | u16 *blue, int regno) | |
3495 | { | |
3496 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
3497 | ||
3498 | *red = intel_crtc->lut_r[regno] << 8; | |
3499 | *green = intel_crtc->lut_g[regno] << 8; | |
3500 | *blue = intel_crtc->lut_b[regno] << 8; | |
3501 | } | |
3502 | ||
79e53945 JB |
3503 | static void intel_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green, |
3504 | u16 *blue, uint32_t size) | |
3505 | { | |
3506 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
3507 | int i; | |
3508 | ||
3509 | if (size != 256) | |
3510 | return; | |
3511 | ||
3512 | for (i = 0; i < 256; i++) { | |
3513 | intel_crtc->lut_r[i] = red[i] >> 8; | |
3514 | intel_crtc->lut_g[i] = green[i] >> 8; | |
3515 | intel_crtc->lut_b[i] = blue[i] >> 8; | |
3516 | } | |
3517 | ||
3518 | intel_crtc_load_lut(crtc); | |
3519 | } | |
3520 | ||
3521 | /** | |
3522 | * Get a pipe with a simple mode set on it for doing load-based monitor | |
3523 | * detection. | |
3524 | * | |
3525 | * It will be up to the load-detect code to adjust the pipe as appropriate for | |
3526 | * its requirements. The pipe will be connected to no other outputs. | |
3527 | * | |
3528 | * Currently this code will only succeed if there is a pipe with no outputs | |
3529 | * configured for it. In the future, it could choose to temporarily disable | |
3530 | * some outputs to free up a pipe for its use. | |
3531 | * | |
3532 | * \return crtc, or NULL if no pipes are available. | |
3533 | */ | |
3534 | ||
3535 | /* VESA 640x480x72Hz mode to set on the pipe */ | |
3536 | static struct drm_display_mode load_detect_mode = { | |
3537 | DRM_MODE("640x480", DRM_MODE_TYPE_DEFAULT, 31500, 640, 664, | |
3538 | 704, 832, 0, 480, 489, 491, 520, 0, DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC), | |
3539 | }; | |
3540 | ||
3541 | struct drm_crtc *intel_get_load_detect_pipe(struct intel_output *intel_output, | |
3542 | struct drm_display_mode *mode, | |
3543 | int *dpms_mode) | |
3544 | { | |
3545 | struct intel_crtc *intel_crtc; | |
3546 | struct drm_crtc *possible_crtc; | |
3547 | struct drm_crtc *supported_crtc =NULL; | |
3548 | struct drm_encoder *encoder = &intel_output->enc; | |
3549 | struct drm_crtc *crtc = NULL; | |
3550 | struct drm_device *dev = encoder->dev; | |
3551 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
3552 | struct drm_crtc_helper_funcs *crtc_funcs; | |
3553 | int i = -1; | |
3554 | ||
3555 | /* | |
3556 | * Algorithm gets a little messy: | |
3557 | * - if the connector already has an assigned crtc, use it (but make | |
3558 | * sure it's on first) | |
3559 | * - try to find the first unused crtc that can drive this connector, | |
3560 | * and use that if we find one | |
3561 | * - if there are no unused crtcs available, try to use the first | |
3562 | * one we found that supports the connector | |
3563 | */ | |
3564 | ||
3565 | /* See if we already have a CRTC for this connector */ | |
3566 | if (encoder->crtc) { | |
3567 | crtc = encoder->crtc; | |
3568 | /* Make sure the crtc and connector are running */ | |
3569 | intel_crtc = to_intel_crtc(crtc); | |
3570 | *dpms_mode = intel_crtc->dpms_mode; | |
3571 | if (intel_crtc->dpms_mode != DRM_MODE_DPMS_ON) { | |
3572 | crtc_funcs = crtc->helper_private; | |
3573 | crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON); | |
3574 | encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON); | |
3575 | } | |
3576 | return crtc; | |
3577 | } | |
3578 | ||
3579 | /* Find an unused one (if possible) */ | |
3580 | list_for_each_entry(possible_crtc, &dev->mode_config.crtc_list, head) { | |
3581 | i++; | |
3582 | if (!(encoder->possible_crtcs & (1 << i))) | |
3583 | continue; | |
3584 | if (!possible_crtc->enabled) { | |
3585 | crtc = possible_crtc; | |
3586 | break; | |
3587 | } | |
3588 | if (!supported_crtc) | |
3589 | supported_crtc = possible_crtc; | |
3590 | } | |
3591 | ||
3592 | /* | |
3593 | * If we didn't find an unused CRTC, don't use any. | |
3594 | */ | |
3595 | if (!crtc) { | |
3596 | return NULL; | |
3597 | } | |
3598 | ||
3599 | encoder->crtc = crtc; | |
03d60699 | 3600 | intel_output->base.encoder = encoder; |
79e53945 JB |
3601 | intel_output->load_detect_temp = true; |
3602 | ||
3603 | intel_crtc = to_intel_crtc(crtc); | |
3604 | *dpms_mode = intel_crtc->dpms_mode; | |
3605 | ||
3606 | if (!crtc->enabled) { | |
3607 | if (!mode) | |
3608 | mode = &load_detect_mode; | |
3c4fdcfb | 3609 | drm_crtc_helper_set_mode(crtc, mode, 0, 0, crtc->fb); |
79e53945 JB |
3610 | } else { |
3611 | if (intel_crtc->dpms_mode != DRM_MODE_DPMS_ON) { | |
3612 | crtc_funcs = crtc->helper_private; | |
3613 | crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON); | |
3614 | } | |
3615 | ||
3616 | /* Add this connector to the crtc */ | |
3617 | encoder_funcs->mode_set(encoder, &crtc->mode, &crtc->mode); | |
3618 | encoder_funcs->commit(encoder); | |
3619 | } | |
3620 | /* let the connector get through one full cycle before testing */ | |
3621 | intel_wait_for_vblank(dev); | |
3622 | ||
3623 | return crtc; | |
3624 | } | |
3625 | ||
3626 | void intel_release_load_detect_pipe(struct intel_output *intel_output, int dpms_mode) | |
3627 | { | |
3628 | struct drm_encoder *encoder = &intel_output->enc; | |
3629 | struct drm_device *dev = encoder->dev; | |
3630 | struct drm_crtc *crtc = encoder->crtc; | |
3631 | struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private; | |
3632 | struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private; | |
3633 | ||
3634 | if (intel_output->load_detect_temp) { | |
3635 | encoder->crtc = NULL; | |
03d60699 | 3636 | intel_output->base.encoder = NULL; |
79e53945 JB |
3637 | intel_output->load_detect_temp = false; |
3638 | crtc->enabled = drm_helper_crtc_in_use(crtc); | |
3639 | drm_helper_disable_unused_functions(dev); | |
3640 | } | |
3641 | ||
3642 | /* Switch crtc and output back off if necessary */ | |
3643 | if (crtc->enabled && dpms_mode != DRM_MODE_DPMS_ON) { | |
3644 | if (encoder->crtc == crtc) | |
3645 | encoder_funcs->dpms(encoder, dpms_mode); | |
3646 | crtc_funcs->dpms(crtc, dpms_mode); | |
3647 | } | |
3648 | } | |
3649 | ||
3650 | /* Returns the clock of the currently programmed mode of the given pipe. */ | |
3651 | static int intel_crtc_clock_get(struct drm_device *dev, struct drm_crtc *crtc) | |
3652 | { | |
3653 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3654 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
3655 | int pipe = intel_crtc->pipe; | |
3656 | u32 dpll = I915_READ((pipe == 0) ? DPLL_A : DPLL_B); | |
3657 | u32 fp; | |
3658 | intel_clock_t clock; | |
3659 | ||
3660 | if ((dpll & DISPLAY_RATE_SELECT_FPA1) == 0) | |
3661 | fp = I915_READ((pipe == 0) ? FPA0 : FPB0); | |
3662 | else | |
3663 | fp = I915_READ((pipe == 0) ? FPA1 : FPB1); | |
3664 | ||
3665 | clock.m1 = (fp & FP_M1_DIV_MASK) >> FP_M1_DIV_SHIFT; | |
2177832f SL |
3666 | if (IS_IGD(dev)) { |
3667 | clock.n = ffs((fp & FP_N_IGD_DIV_MASK) >> FP_N_DIV_SHIFT) - 1; | |
3668 | clock.m2 = (fp & FP_M2_IGD_DIV_MASK) >> FP_M2_DIV_SHIFT; | |
3669 | } else { | |
3670 | clock.n = (fp & FP_N_DIV_MASK) >> FP_N_DIV_SHIFT; | |
3671 | clock.m2 = (fp & FP_M2_DIV_MASK) >> FP_M2_DIV_SHIFT; | |
3672 | } | |
3673 | ||
79e53945 | 3674 | if (IS_I9XX(dev)) { |
2177832f SL |
3675 | if (IS_IGD(dev)) |
3676 | clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_IGD) >> | |
3677 | DPLL_FPA01_P1_POST_DIV_SHIFT_IGD); | |
3678 | else | |
3679 | clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK) >> | |
79e53945 JB |
3680 | DPLL_FPA01_P1_POST_DIV_SHIFT); |
3681 | ||
3682 | switch (dpll & DPLL_MODE_MASK) { | |
3683 | case DPLLB_MODE_DAC_SERIAL: | |
3684 | clock.p2 = dpll & DPLL_DAC_SERIAL_P2_CLOCK_DIV_5 ? | |
3685 | 5 : 10; | |
3686 | break; | |
3687 | case DPLLB_MODE_LVDS: | |
3688 | clock.p2 = dpll & DPLLB_LVDS_P2_CLOCK_DIV_7 ? | |
3689 | 7 : 14; | |
3690 | break; | |
3691 | default: | |
28c97730 | 3692 | DRM_DEBUG_KMS("Unknown DPLL mode %08x in programmed " |
79e53945 JB |
3693 | "mode\n", (int)(dpll & DPLL_MODE_MASK)); |
3694 | return 0; | |
3695 | } | |
3696 | ||
3697 | /* XXX: Handle the 100Mhz refclk */ | |
2177832f | 3698 | intel_clock(dev, 96000, &clock); |
79e53945 JB |
3699 | } else { |
3700 | bool is_lvds = (pipe == 1) && (I915_READ(LVDS) & LVDS_PORT_EN); | |
3701 | ||
3702 | if (is_lvds) { | |
3703 | clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830_LVDS) >> | |
3704 | DPLL_FPA01_P1_POST_DIV_SHIFT); | |
3705 | clock.p2 = 14; | |
3706 | ||
3707 | if ((dpll & PLL_REF_INPUT_MASK) == | |
3708 | PLLB_REF_INPUT_SPREADSPECTRUMIN) { | |
3709 | /* XXX: might not be 66MHz */ | |
2177832f | 3710 | intel_clock(dev, 66000, &clock); |
79e53945 | 3711 | } else |
2177832f | 3712 | intel_clock(dev, 48000, &clock); |
79e53945 JB |
3713 | } else { |
3714 | if (dpll & PLL_P1_DIVIDE_BY_TWO) | |
3715 | clock.p1 = 2; | |
3716 | else { | |
3717 | clock.p1 = ((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830) >> | |
3718 | DPLL_FPA01_P1_POST_DIV_SHIFT) + 2; | |
3719 | } | |
3720 | if (dpll & PLL_P2_DIVIDE_BY_4) | |
3721 | clock.p2 = 4; | |
3722 | else | |
3723 | clock.p2 = 2; | |
3724 | ||
2177832f | 3725 | intel_clock(dev, 48000, &clock); |
79e53945 JB |
3726 | } |
3727 | } | |
3728 | ||
3729 | /* XXX: It would be nice to validate the clocks, but we can't reuse | |
3730 | * i830PllIsValid() because it relies on the xf86_config connector | |
3731 | * configuration being accurate, which it isn't necessarily. | |
3732 | */ | |
3733 | ||
3734 | return clock.dot; | |
3735 | } | |
3736 | ||
3737 | /** Returns the currently programmed mode of the given pipe. */ | |
3738 | struct drm_display_mode *intel_crtc_mode_get(struct drm_device *dev, | |
3739 | struct drm_crtc *crtc) | |
3740 | { | |
3741 | struct drm_i915_private *dev_priv = dev->dev_private; | |
3742 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
3743 | int pipe = intel_crtc->pipe; | |
3744 | struct drm_display_mode *mode; | |
3745 | int htot = I915_READ((pipe == 0) ? HTOTAL_A : HTOTAL_B); | |
3746 | int hsync = I915_READ((pipe == 0) ? HSYNC_A : HSYNC_B); | |
3747 | int vtot = I915_READ((pipe == 0) ? VTOTAL_A : VTOTAL_B); | |
3748 | int vsync = I915_READ((pipe == 0) ? VSYNC_A : VSYNC_B); | |
3749 | ||
3750 | mode = kzalloc(sizeof(*mode), GFP_KERNEL); | |
3751 | if (!mode) | |
3752 | return NULL; | |
3753 | ||
3754 | mode->clock = intel_crtc_clock_get(dev, crtc); | |
3755 | mode->hdisplay = (htot & 0xffff) + 1; | |
3756 | mode->htotal = ((htot & 0xffff0000) >> 16) + 1; | |
3757 | mode->hsync_start = (hsync & 0xffff) + 1; | |
3758 | mode->hsync_end = ((hsync & 0xffff0000) >> 16) + 1; | |
3759 | mode->vdisplay = (vtot & 0xffff) + 1; | |
3760 | mode->vtotal = ((vtot & 0xffff0000) >> 16) + 1; | |
3761 | mode->vsync_start = (vsync & 0xffff) + 1; | |
3762 | mode->vsync_end = ((vsync & 0xffff0000) >> 16) + 1; | |
3763 | ||
3764 | drm_mode_set_name(mode); | |
3765 | drm_mode_set_crtcinfo(mode, 0); | |
3766 | ||
3767 | return mode; | |
3768 | } | |
3769 | ||
652c393a JB |
3770 | #define GPU_IDLE_TIMEOUT 500 /* ms */ |
3771 | ||
3772 | /* When this timer fires, we've been idle for awhile */ | |
3773 | static void intel_gpu_idle_timer(unsigned long arg) | |
3774 | { | |
3775 | struct drm_device *dev = (struct drm_device *)arg; | |
3776 | drm_i915_private_t *dev_priv = dev->dev_private; | |
3777 | ||
44d98a61 | 3778 | DRM_DEBUG_DRIVER("idle timer fired, downclocking\n"); |
652c393a JB |
3779 | |
3780 | dev_priv->busy = false; | |
3781 | ||
01dfba93 | 3782 | queue_work(dev_priv->wq, &dev_priv->idle_work); |
652c393a JB |
3783 | } |
3784 | ||
3785 | void intel_increase_renderclock(struct drm_device *dev, bool schedule) | |
3786 | { | |
3787 | drm_i915_private_t *dev_priv = dev->dev_private; | |
3788 | ||
3789 | if (IS_IGDNG(dev)) | |
3790 | return; | |
3791 | ||
3792 | if (!dev_priv->render_reclock_avail) { | |
44d98a61 | 3793 | DRM_DEBUG_DRIVER("not reclocking render clock\n"); |
652c393a JB |
3794 | return; |
3795 | } | |
3796 | ||
3797 | /* Restore render clock frequency to original value */ | |
3798 | if (IS_G4X(dev) || IS_I9XX(dev)) | |
3799 | pci_write_config_word(dev->pdev, GCFGC, dev_priv->orig_clock); | |
3800 | else if (IS_I85X(dev)) | |
3801 | pci_write_config_word(dev->pdev, HPLLCC, dev_priv->orig_clock); | |
44d98a61 | 3802 | DRM_DEBUG_DRIVER("increasing render clock frequency\n"); |
652c393a JB |
3803 | |
3804 | /* Schedule downclock */ | |
3805 | if (schedule) | |
3806 | mod_timer(&dev_priv->idle_timer, jiffies + | |
3807 | msecs_to_jiffies(GPU_IDLE_TIMEOUT)); | |
3808 | } | |
3809 | ||
3810 | void intel_decrease_renderclock(struct drm_device *dev) | |
3811 | { | |
3812 | drm_i915_private_t *dev_priv = dev->dev_private; | |
3813 | ||
3814 | if (IS_IGDNG(dev)) | |
3815 | return; | |
3816 | ||
3817 | if (!dev_priv->render_reclock_avail) { | |
44d98a61 | 3818 | DRM_DEBUG_DRIVER("not reclocking render clock\n"); |
652c393a JB |
3819 | return; |
3820 | } | |
3821 | ||
3822 | if (IS_G4X(dev)) { | |
3823 | u16 gcfgc; | |
3824 | ||
3825 | /* Adjust render clock... */ | |
3826 | pci_read_config_word(dev->pdev, GCFGC, &gcfgc); | |
3827 | ||
3828 | /* Down to minimum... */ | |
3829 | gcfgc &= ~GM45_GC_RENDER_CLOCK_MASK; | |
3830 | gcfgc |= GM45_GC_RENDER_CLOCK_266_MHZ; | |
3831 | ||
3832 | pci_write_config_word(dev->pdev, GCFGC, gcfgc); | |
3833 | } else if (IS_I965G(dev)) { | |
3834 | u16 gcfgc; | |
3835 | ||
3836 | /* Adjust render clock... */ | |
3837 | pci_read_config_word(dev->pdev, GCFGC, &gcfgc); | |
3838 | ||
3839 | /* Down to minimum... */ | |
3840 | gcfgc &= ~I965_GC_RENDER_CLOCK_MASK; | |
3841 | gcfgc |= I965_GC_RENDER_CLOCK_267_MHZ; | |
3842 | ||
3843 | pci_write_config_word(dev->pdev, GCFGC, gcfgc); | |
3844 | } else if (IS_I945G(dev) || IS_I945GM(dev)) { | |
3845 | u16 gcfgc; | |
3846 | ||
3847 | /* Adjust render clock... */ | |
3848 | pci_read_config_word(dev->pdev, GCFGC, &gcfgc); | |
3849 | ||
3850 | /* Down to minimum... */ | |
3851 | gcfgc &= ~I945_GC_RENDER_CLOCK_MASK; | |
3852 | gcfgc |= I945_GC_RENDER_CLOCK_166_MHZ; | |
3853 | ||
3854 | pci_write_config_word(dev->pdev, GCFGC, gcfgc); | |
3855 | } else if (IS_I915G(dev)) { | |
3856 | u16 gcfgc; | |
3857 | ||
3858 | /* Adjust render clock... */ | |
3859 | pci_read_config_word(dev->pdev, GCFGC, &gcfgc); | |
3860 | ||
3861 | /* Down to minimum... */ | |
3862 | gcfgc &= ~I915_GC_RENDER_CLOCK_MASK; | |
3863 | gcfgc |= I915_GC_RENDER_CLOCK_166_MHZ; | |
3864 | ||
3865 | pci_write_config_word(dev->pdev, GCFGC, gcfgc); | |
3866 | } else if (IS_I85X(dev)) { | |
3867 | u16 hpllcc; | |
3868 | ||
3869 | /* Adjust render clock... */ | |
3870 | pci_read_config_word(dev->pdev, HPLLCC, &hpllcc); | |
3871 | ||
3872 | /* Up to maximum... */ | |
3873 | hpllcc &= ~GC_CLOCK_CONTROL_MASK; | |
3874 | hpllcc |= GC_CLOCK_133_200; | |
3875 | ||
3876 | pci_write_config_word(dev->pdev, HPLLCC, hpllcc); | |
3877 | } | |
44d98a61 | 3878 | DRM_DEBUG_DRIVER("decreasing render clock frequency\n"); |
652c393a JB |
3879 | } |
3880 | ||
3881 | /* Note that no increase function is needed for this - increase_renderclock() | |
3882 | * will also rewrite these bits | |
3883 | */ | |
3884 | void intel_decrease_displayclock(struct drm_device *dev) | |
3885 | { | |
3886 | if (IS_IGDNG(dev)) | |
3887 | return; | |
3888 | ||
3889 | if (IS_I945G(dev) || IS_I945GM(dev) || IS_I915G(dev) || | |
3890 | IS_I915GM(dev)) { | |
3891 | u16 gcfgc; | |
3892 | ||
3893 | /* Adjust render clock... */ | |
3894 | pci_read_config_word(dev->pdev, GCFGC, &gcfgc); | |
3895 | ||
3896 | /* Down to minimum... */ | |
3897 | gcfgc &= ~0xf0; | |
3898 | gcfgc |= 0x80; | |
3899 | ||
3900 | pci_write_config_word(dev->pdev, GCFGC, gcfgc); | |
3901 | } | |
3902 | } | |
3903 | ||
3904 | #define CRTC_IDLE_TIMEOUT 1000 /* ms */ | |
3905 | ||
3906 | static void intel_crtc_idle_timer(unsigned long arg) | |
3907 | { | |
3908 | struct intel_crtc *intel_crtc = (struct intel_crtc *)arg; | |
3909 | struct drm_crtc *crtc = &intel_crtc->base; | |
3910 | drm_i915_private_t *dev_priv = crtc->dev->dev_private; | |
3911 | ||
44d98a61 | 3912 | DRM_DEBUG_DRIVER("idle timer fired, downclocking\n"); |
652c393a JB |
3913 | |
3914 | intel_crtc->busy = false; | |
3915 | ||
01dfba93 | 3916 | queue_work(dev_priv->wq, &dev_priv->idle_work); |
652c393a JB |
3917 | } |
3918 | ||
3919 | static void intel_increase_pllclock(struct drm_crtc *crtc, bool schedule) | |
3920 | { | |
3921 | struct drm_device *dev = crtc->dev; | |
3922 | drm_i915_private_t *dev_priv = dev->dev_private; | |
3923 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
3924 | int pipe = intel_crtc->pipe; | |
3925 | int dpll_reg = (pipe == 0) ? DPLL_A : DPLL_B; | |
3926 | int dpll = I915_READ(dpll_reg); | |
3927 | ||
3928 | if (IS_IGDNG(dev)) | |
3929 | return; | |
3930 | ||
3931 | if (!dev_priv->lvds_downclock_avail) | |
3932 | return; | |
3933 | ||
3934 | if (!HAS_PIPE_CXSR(dev) && (dpll & DISPLAY_RATE_SELECT_FPA1)) { | |
44d98a61 | 3935 | DRM_DEBUG_DRIVER("upclocking LVDS\n"); |
652c393a JB |
3936 | |
3937 | /* Unlock panel regs */ | |
3938 | I915_WRITE(PP_CONTROL, I915_READ(PP_CONTROL) | (0xabcd << 16)); | |
3939 | ||
3940 | dpll &= ~DISPLAY_RATE_SELECT_FPA1; | |
3941 | I915_WRITE(dpll_reg, dpll); | |
3942 | dpll = I915_READ(dpll_reg); | |
3943 | intel_wait_for_vblank(dev); | |
3944 | dpll = I915_READ(dpll_reg); | |
3945 | if (dpll & DISPLAY_RATE_SELECT_FPA1) | |
44d98a61 | 3946 | DRM_DEBUG_DRIVER("failed to upclock LVDS!\n"); |
652c393a JB |
3947 | |
3948 | /* ...and lock them again */ | |
3949 | I915_WRITE(PP_CONTROL, I915_READ(PP_CONTROL) & 0x3); | |
3950 | } | |
3951 | ||
3952 | /* Schedule downclock */ | |
3953 | if (schedule) | |
3954 | mod_timer(&intel_crtc->idle_timer, jiffies + | |
3955 | msecs_to_jiffies(CRTC_IDLE_TIMEOUT)); | |
3956 | } | |
3957 | ||
3958 | static void intel_decrease_pllclock(struct drm_crtc *crtc) | |
3959 | { | |
3960 | struct drm_device *dev = crtc->dev; | |
3961 | drm_i915_private_t *dev_priv = dev->dev_private; | |
3962 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
3963 | int pipe = intel_crtc->pipe; | |
3964 | int dpll_reg = (pipe == 0) ? DPLL_A : DPLL_B; | |
3965 | int dpll = I915_READ(dpll_reg); | |
3966 | ||
3967 | if (IS_IGDNG(dev)) | |
3968 | return; | |
3969 | ||
3970 | if (!dev_priv->lvds_downclock_avail) | |
3971 | return; | |
3972 | ||
3973 | /* | |
3974 | * Since this is called by a timer, we should never get here in | |
3975 | * the manual case. | |
3976 | */ | |
3977 | if (!HAS_PIPE_CXSR(dev) && intel_crtc->lowfreq_avail) { | |
44d98a61 | 3978 | DRM_DEBUG_DRIVER("downclocking LVDS\n"); |
652c393a JB |
3979 | |
3980 | /* Unlock panel regs */ | |
3981 | I915_WRITE(PP_CONTROL, I915_READ(PP_CONTROL) | (0xabcd << 16)); | |
3982 | ||
3983 | dpll |= DISPLAY_RATE_SELECT_FPA1; | |
3984 | I915_WRITE(dpll_reg, dpll); | |
3985 | dpll = I915_READ(dpll_reg); | |
3986 | intel_wait_for_vblank(dev); | |
3987 | dpll = I915_READ(dpll_reg); | |
3988 | if (!(dpll & DISPLAY_RATE_SELECT_FPA1)) | |
44d98a61 | 3989 | DRM_DEBUG_DRIVER("failed to downclock LVDS!\n"); |
652c393a JB |
3990 | |
3991 | /* ...and lock them again */ | |
3992 | I915_WRITE(PP_CONTROL, I915_READ(PP_CONTROL) & 0x3); | |
3993 | } | |
3994 | ||
3995 | } | |
3996 | ||
3997 | /** | |
3998 | * intel_idle_update - adjust clocks for idleness | |
3999 | * @work: work struct | |
4000 | * | |
4001 | * Either the GPU or display (or both) went idle. Check the busy status | |
4002 | * here and adjust the CRTC and GPU clocks as necessary. | |
4003 | */ | |
4004 | static void intel_idle_update(struct work_struct *work) | |
4005 | { | |
4006 | drm_i915_private_t *dev_priv = container_of(work, drm_i915_private_t, | |
4007 | idle_work); | |
4008 | struct drm_device *dev = dev_priv->dev; | |
4009 | struct drm_crtc *crtc; | |
4010 | struct intel_crtc *intel_crtc; | |
4011 | ||
4012 | if (!i915_powersave) | |
4013 | return; | |
4014 | ||
4015 | mutex_lock(&dev->struct_mutex); | |
4016 | ||
4017 | /* GPU isn't processing, downclock it. */ | |
4018 | if (!dev_priv->busy) { | |
4019 | intel_decrease_renderclock(dev); | |
4020 | intel_decrease_displayclock(dev); | |
4021 | } | |
4022 | ||
4023 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
4024 | /* Skip inactive CRTCs */ | |
4025 | if (!crtc->fb) | |
4026 | continue; | |
4027 | ||
4028 | intel_crtc = to_intel_crtc(crtc); | |
4029 | if (!intel_crtc->busy) | |
4030 | intel_decrease_pllclock(crtc); | |
4031 | } | |
4032 | ||
4033 | mutex_unlock(&dev->struct_mutex); | |
4034 | } | |
4035 | ||
4036 | /** | |
4037 | * intel_mark_busy - mark the GPU and possibly the display busy | |
4038 | * @dev: drm device | |
4039 | * @obj: object we're operating on | |
4040 | * | |
4041 | * Callers can use this function to indicate that the GPU is busy processing | |
4042 | * commands. If @obj matches one of the CRTC objects (i.e. it's a scanout | |
4043 | * buffer), we'll also mark the display as busy, so we know to increase its | |
4044 | * clock frequency. | |
4045 | */ | |
4046 | void intel_mark_busy(struct drm_device *dev, struct drm_gem_object *obj) | |
4047 | { | |
4048 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4049 | struct drm_crtc *crtc = NULL; | |
4050 | struct intel_framebuffer *intel_fb; | |
4051 | struct intel_crtc *intel_crtc; | |
4052 | ||
5e17ee74 ZW |
4053 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) |
4054 | return; | |
4055 | ||
28cf798f CW |
4056 | if (!dev_priv->busy) { |
4057 | dev_priv->busy = true; | |
4058 | intel_increase_renderclock(dev, true); | |
4059 | } else { | |
4060 | mod_timer(&dev_priv->idle_timer, jiffies + | |
4061 | msecs_to_jiffies(GPU_IDLE_TIMEOUT)); | |
4062 | } | |
652c393a JB |
4063 | |
4064 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
4065 | if (!crtc->fb) | |
4066 | continue; | |
4067 | ||
4068 | intel_crtc = to_intel_crtc(crtc); | |
4069 | intel_fb = to_intel_framebuffer(crtc->fb); | |
4070 | if (intel_fb->obj == obj) { | |
4071 | if (!intel_crtc->busy) { | |
4072 | /* Non-busy -> busy, upclock */ | |
4073 | intel_increase_pllclock(crtc, true); | |
4074 | intel_crtc->busy = true; | |
4075 | } else { | |
4076 | /* Busy -> busy, put off timer */ | |
4077 | mod_timer(&intel_crtc->idle_timer, jiffies + | |
4078 | msecs_to_jiffies(CRTC_IDLE_TIMEOUT)); | |
4079 | } | |
4080 | } | |
4081 | } | |
4082 | } | |
4083 | ||
79e53945 JB |
4084 | static void intel_crtc_destroy(struct drm_crtc *crtc) |
4085 | { | |
4086 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
4087 | ||
4088 | drm_crtc_cleanup(crtc); | |
4089 | kfree(intel_crtc); | |
4090 | } | |
4091 | ||
6b95a207 KH |
4092 | struct intel_unpin_work { |
4093 | struct work_struct work; | |
4094 | struct drm_device *dev; | |
4095 | struct drm_gem_object *obj; | |
4096 | struct drm_pending_vblank_event *event; | |
4097 | int pending; | |
4098 | }; | |
4099 | ||
4100 | static void intel_unpin_work_fn(struct work_struct *__work) | |
4101 | { | |
4102 | struct intel_unpin_work *work = | |
4103 | container_of(__work, struct intel_unpin_work, work); | |
4104 | ||
4105 | mutex_lock(&work->dev->struct_mutex); | |
4106 | i915_gem_object_unpin(work->obj); | |
4107 | drm_gem_object_unreference(work->obj); | |
4108 | mutex_unlock(&work->dev->struct_mutex); | |
4109 | kfree(work); | |
4110 | } | |
4111 | ||
4112 | void intel_finish_page_flip(struct drm_device *dev, int pipe) | |
4113 | { | |
4114 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4115 | struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[pipe]; | |
4116 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
4117 | struct intel_unpin_work *work; | |
4118 | struct drm_i915_gem_object *obj_priv; | |
4119 | struct drm_pending_vblank_event *e; | |
4120 | struct timeval now; | |
4121 | unsigned long flags; | |
4122 | ||
4123 | /* Ignore early vblank irqs */ | |
4124 | if (intel_crtc == NULL) | |
4125 | return; | |
4126 | ||
4127 | spin_lock_irqsave(&dev->event_lock, flags); | |
4128 | work = intel_crtc->unpin_work; | |
4129 | if (work == NULL || !work->pending) { | |
4130 | spin_unlock_irqrestore(&dev->event_lock, flags); | |
4131 | return; | |
4132 | } | |
4133 | ||
4134 | intel_crtc->unpin_work = NULL; | |
4135 | drm_vblank_put(dev, intel_crtc->pipe); | |
4136 | ||
4137 | if (work->event) { | |
4138 | e = work->event; | |
4139 | do_gettimeofday(&now); | |
4140 | e->event.sequence = drm_vblank_count(dev, intel_crtc->pipe); | |
4141 | e->event.tv_sec = now.tv_sec; | |
4142 | e->event.tv_usec = now.tv_usec; | |
4143 | list_add_tail(&e->base.link, | |
4144 | &e->base.file_priv->event_list); | |
4145 | wake_up_interruptible(&e->base.file_priv->event_wait); | |
4146 | } | |
4147 | ||
4148 | spin_unlock_irqrestore(&dev->event_lock, flags); | |
4149 | ||
4150 | obj_priv = work->obj->driver_private; | |
4151 | if (atomic_dec_and_test(&obj_priv->pending_flip)) | |
4152 | DRM_WAKEUP(&dev_priv->pending_flip_queue); | |
4153 | schedule_work(&work->work); | |
4154 | } | |
4155 | ||
4156 | void intel_prepare_page_flip(struct drm_device *dev, int plane) | |
4157 | { | |
4158 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4159 | struct intel_crtc *intel_crtc = | |
4160 | to_intel_crtc(dev_priv->plane_to_crtc_mapping[plane]); | |
4161 | unsigned long flags; | |
4162 | ||
4163 | spin_lock_irqsave(&dev->event_lock, flags); | |
4164 | if (intel_crtc->unpin_work) | |
4165 | intel_crtc->unpin_work->pending = 1; | |
4166 | spin_unlock_irqrestore(&dev->event_lock, flags); | |
4167 | } | |
4168 | ||
4169 | static int intel_crtc_page_flip(struct drm_crtc *crtc, | |
4170 | struct drm_framebuffer *fb, | |
4171 | struct drm_pending_vblank_event *event) | |
4172 | { | |
4173 | struct drm_device *dev = crtc->dev; | |
4174 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4175 | struct intel_framebuffer *intel_fb; | |
4176 | struct drm_i915_gem_object *obj_priv; | |
4177 | struct drm_gem_object *obj; | |
4178 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
4179 | struct intel_unpin_work *work; | |
4180 | unsigned long flags; | |
4181 | int ret; | |
4182 | RING_LOCALS; | |
4183 | ||
4184 | work = kzalloc(sizeof *work, GFP_KERNEL); | |
4185 | if (work == NULL) | |
4186 | return -ENOMEM; | |
4187 | ||
4188 | mutex_lock(&dev->struct_mutex); | |
4189 | ||
4190 | work->event = event; | |
4191 | work->dev = crtc->dev; | |
4192 | intel_fb = to_intel_framebuffer(crtc->fb); | |
4193 | work->obj = intel_fb->obj; | |
4194 | INIT_WORK(&work->work, intel_unpin_work_fn); | |
4195 | ||
4196 | /* We borrow the event spin lock for protecting unpin_work */ | |
4197 | spin_lock_irqsave(&dev->event_lock, flags); | |
4198 | if (intel_crtc->unpin_work) { | |
4199 | spin_unlock_irqrestore(&dev->event_lock, flags); | |
4200 | kfree(work); | |
4201 | mutex_unlock(&dev->struct_mutex); | |
4202 | return -EBUSY; | |
4203 | } | |
4204 | intel_crtc->unpin_work = work; | |
4205 | spin_unlock_irqrestore(&dev->event_lock, flags); | |
4206 | ||
4207 | intel_fb = to_intel_framebuffer(fb); | |
4208 | obj = intel_fb->obj; | |
4209 | ||
4210 | ret = intel_pin_and_fence_fb_obj(dev, obj); | |
4211 | if (ret != 0) { | |
4212 | kfree(work); | |
4213 | mutex_unlock(&dev->struct_mutex); | |
4214 | return ret; | |
4215 | } | |
4216 | ||
4217 | /* Reference the old fb object for the scheduled work. */ | |
4218 | drm_gem_object_reference(work->obj); | |
4219 | ||
4220 | crtc->fb = fb; | |
4221 | i915_gem_object_flush_write_domain(obj); | |
4222 | drm_vblank_get(dev, intel_crtc->pipe); | |
4223 | obj_priv = obj->driver_private; | |
4224 | atomic_inc(&obj_priv->pending_flip); | |
4225 | ||
4226 | BEGIN_LP_RING(4); | |
4227 | OUT_RING(MI_DISPLAY_FLIP | | |
4228 | MI_DISPLAY_FLIP_PLANE(intel_crtc->plane)); | |
4229 | OUT_RING(fb->pitch); | |
4230 | OUT_RING(obj_priv->gtt_offset | obj_priv->tiling_mode); | |
4231 | OUT_RING((fb->width << 16) | fb->height); | |
4232 | ADVANCE_LP_RING(); | |
4233 | ||
4234 | mutex_unlock(&dev->struct_mutex); | |
4235 | ||
4236 | return 0; | |
4237 | } | |
4238 | ||
79e53945 JB |
4239 | static const struct drm_crtc_helper_funcs intel_helper_funcs = { |
4240 | .dpms = intel_crtc_dpms, | |
4241 | .mode_fixup = intel_crtc_mode_fixup, | |
4242 | .mode_set = intel_crtc_mode_set, | |
4243 | .mode_set_base = intel_pipe_set_base, | |
4244 | .prepare = intel_crtc_prepare, | |
4245 | .commit = intel_crtc_commit, | |
068143d3 | 4246 | .load_lut = intel_crtc_load_lut, |
79e53945 JB |
4247 | }; |
4248 | ||
4249 | static const struct drm_crtc_funcs intel_crtc_funcs = { | |
4250 | .cursor_set = intel_crtc_cursor_set, | |
4251 | .cursor_move = intel_crtc_cursor_move, | |
4252 | .gamma_set = intel_crtc_gamma_set, | |
4253 | .set_config = drm_crtc_helper_set_config, | |
4254 | .destroy = intel_crtc_destroy, | |
6b95a207 | 4255 | .page_flip = intel_crtc_page_flip, |
79e53945 JB |
4256 | }; |
4257 | ||
4258 | ||
b358d0a6 | 4259 | static void intel_crtc_init(struct drm_device *dev, int pipe) |
79e53945 JB |
4260 | { |
4261 | struct intel_crtc *intel_crtc; | |
4262 | int i; | |
4263 | ||
4264 | intel_crtc = kzalloc(sizeof(struct intel_crtc) + (INTELFB_CONN_LIMIT * sizeof(struct drm_connector *)), GFP_KERNEL); | |
4265 | if (intel_crtc == NULL) | |
4266 | return; | |
4267 | ||
4268 | drm_crtc_init(dev, &intel_crtc->base, &intel_crtc_funcs); | |
4269 | ||
4270 | drm_mode_crtc_set_gamma_size(&intel_crtc->base, 256); | |
4271 | intel_crtc->pipe = pipe; | |
7662c8bd | 4272 | intel_crtc->plane = pipe; |
79e53945 JB |
4273 | for (i = 0; i < 256; i++) { |
4274 | intel_crtc->lut_r[i] = i; | |
4275 | intel_crtc->lut_g[i] = i; | |
4276 | intel_crtc->lut_b[i] = i; | |
4277 | } | |
4278 | ||
80824003 JB |
4279 | /* Swap pipes & planes for FBC on pre-965 */ |
4280 | intel_crtc->pipe = pipe; | |
4281 | intel_crtc->plane = pipe; | |
4282 | if (IS_MOBILE(dev) && (IS_I9XX(dev) && !IS_I965G(dev))) { | |
28c97730 | 4283 | DRM_DEBUG_KMS("swapping pipes & planes for FBC\n"); |
80824003 JB |
4284 | intel_crtc->plane = ((pipe == 0) ? 1 : 0); |
4285 | } | |
4286 | ||
79e53945 JB |
4287 | intel_crtc->cursor_addr = 0; |
4288 | intel_crtc->dpms_mode = DRM_MODE_DPMS_OFF; | |
4289 | drm_crtc_helper_add(&intel_crtc->base, &intel_helper_funcs); | |
4290 | ||
652c393a JB |
4291 | intel_crtc->busy = false; |
4292 | ||
4293 | setup_timer(&intel_crtc->idle_timer, intel_crtc_idle_timer, | |
4294 | (unsigned long)intel_crtc); | |
79e53945 JB |
4295 | } |
4296 | ||
08d7b3d1 CW |
4297 | int intel_get_pipe_from_crtc_id(struct drm_device *dev, void *data, |
4298 | struct drm_file *file_priv) | |
4299 | { | |
4300 | drm_i915_private_t *dev_priv = dev->dev_private; | |
4301 | struct drm_i915_get_pipe_from_crtc_id *pipe_from_crtc_id = data; | |
c05422d5 DV |
4302 | struct drm_mode_object *drmmode_obj; |
4303 | struct intel_crtc *crtc; | |
08d7b3d1 CW |
4304 | |
4305 | if (!dev_priv) { | |
4306 | DRM_ERROR("called with no initialization\n"); | |
4307 | return -EINVAL; | |
4308 | } | |
4309 | ||
c05422d5 DV |
4310 | drmmode_obj = drm_mode_object_find(dev, pipe_from_crtc_id->crtc_id, |
4311 | DRM_MODE_OBJECT_CRTC); | |
08d7b3d1 | 4312 | |
c05422d5 | 4313 | if (!drmmode_obj) { |
08d7b3d1 CW |
4314 | DRM_ERROR("no such CRTC id\n"); |
4315 | return -EINVAL; | |
4316 | } | |
4317 | ||
c05422d5 DV |
4318 | crtc = to_intel_crtc(obj_to_crtc(drmmode_obj)); |
4319 | pipe_from_crtc_id->pipe = crtc->pipe; | |
08d7b3d1 | 4320 | |
c05422d5 | 4321 | return 0; |
08d7b3d1 CW |
4322 | } |
4323 | ||
79e53945 JB |
4324 | struct drm_crtc *intel_get_crtc_from_pipe(struct drm_device *dev, int pipe) |
4325 | { | |
4326 | struct drm_crtc *crtc = NULL; | |
4327 | ||
4328 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
4329 | struct intel_crtc *intel_crtc = to_intel_crtc(crtc); | |
4330 | if (intel_crtc->pipe == pipe) | |
4331 | break; | |
4332 | } | |
4333 | return crtc; | |
4334 | } | |
4335 | ||
b358d0a6 | 4336 | static int intel_connector_clones(struct drm_device *dev, int type_mask) |
79e53945 JB |
4337 | { |
4338 | int index_mask = 0; | |
4339 | struct drm_connector *connector; | |
4340 | int entry = 0; | |
4341 | ||
4342 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
4343 | struct intel_output *intel_output = to_intel_output(connector); | |
f8aed700 | 4344 | if (type_mask & intel_output->clone_mask) |
79e53945 JB |
4345 | index_mask |= (1 << entry); |
4346 | entry++; | |
4347 | } | |
4348 | return index_mask; | |
4349 | } | |
4350 | ||
4351 | ||
4352 | static void intel_setup_outputs(struct drm_device *dev) | |
4353 | { | |
725e30ad | 4354 | struct drm_i915_private *dev_priv = dev->dev_private; |
79e53945 JB |
4355 | struct drm_connector *connector; |
4356 | ||
4357 | intel_crt_init(dev); | |
4358 | ||
4359 | /* Set up integrated LVDS */ | |
541998a1 | 4360 | if (IS_MOBILE(dev) && !IS_I830(dev)) |
79e53945 JB |
4361 | intel_lvds_init(dev); |
4362 | ||
2c07245f | 4363 | if (IS_IGDNG(dev)) { |
30ad48b7 ZW |
4364 | int found; |
4365 | ||
32f9d658 ZW |
4366 | if (IS_MOBILE(dev) && (I915_READ(DP_A) & DP_DETECTED)) |
4367 | intel_dp_init(dev, DP_A); | |
4368 | ||
30ad48b7 ZW |
4369 | if (I915_READ(HDMIB) & PORT_DETECTED) { |
4370 | /* check SDVOB */ | |
4371 | /* found = intel_sdvo_init(dev, HDMIB); */ | |
4372 | found = 0; | |
4373 | if (!found) | |
4374 | intel_hdmi_init(dev, HDMIB); | |
5eb08b69 ZW |
4375 | if (!found && (I915_READ(PCH_DP_B) & DP_DETECTED)) |
4376 | intel_dp_init(dev, PCH_DP_B); | |
30ad48b7 ZW |
4377 | } |
4378 | ||
4379 | if (I915_READ(HDMIC) & PORT_DETECTED) | |
4380 | intel_hdmi_init(dev, HDMIC); | |
4381 | ||
4382 | if (I915_READ(HDMID) & PORT_DETECTED) | |
4383 | intel_hdmi_init(dev, HDMID); | |
4384 | ||
5eb08b69 ZW |
4385 | if (I915_READ(PCH_DP_C) & DP_DETECTED) |
4386 | intel_dp_init(dev, PCH_DP_C); | |
4387 | ||
4388 | if (I915_READ(PCH_DP_D) & DP_DETECTED) | |
4389 | intel_dp_init(dev, PCH_DP_D); | |
4390 | ||
103a196f | 4391 | } else if (SUPPORTS_DIGITAL_OUTPUTS(dev)) { |
27185ae1 | 4392 | bool found = false; |
7d57382e | 4393 | |
725e30ad EA |
4394 | if (I915_READ(SDVOB) & SDVO_DETECTED) { |
4395 | found = intel_sdvo_init(dev, SDVOB); | |
4396 | if (!found && SUPPORTS_INTEGRATED_HDMI(dev)) | |
4397 | intel_hdmi_init(dev, SDVOB); | |
27185ae1 | 4398 | |
a4fc5ed6 KP |
4399 | if (!found && SUPPORTS_INTEGRATED_DP(dev)) |
4400 | intel_dp_init(dev, DP_B); | |
725e30ad | 4401 | } |
13520b05 KH |
4402 | |
4403 | /* Before G4X SDVOC doesn't have its own detect register */ | |
13520b05 | 4404 | |
27185ae1 | 4405 | if (I915_READ(SDVOB) & SDVO_DETECTED) |
725e30ad | 4406 | found = intel_sdvo_init(dev, SDVOC); |
27185ae1 ML |
4407 | |
4408 | if (!found && (I915_READ(SDVOC) & SDVO_DETECTED)) { | |
4409 | ||
4410 | if (SUPPORTS_INTEGRATED_HDMI(dev)) | |
725e30ad | 4411 | intel_hdmi_init(dev, SDVOC); |
27185ae1 | 4412 | if (SUPPORTS_INTEGRATED_DP(dev)) |
a4fc5ed6 | 4413 | intel_dp_init(dev, DP_C); |
725e30ad | 4414 | } |
27185ae1 | 4415 | |
a4fc5ed6 KP |
4416 | if (SUPPORTS_INTEGRATED_DP(dev) && (I915_READ(DP_D) & DP_DETECTED)) |
4417 | intel_dp_init(dev, DP_D); | |
103a196f | 4418 | } else if (IS_I8XX(dev)) |
79e53945 JB |
4419 | intel_dvo_init(dev); |
4420 | ||
103a196f | 4421 | if (SUPPORTS_TV(dev)) |
79e53945 JB |
4422 | intel_tv_init(dev); |
4423 | ||
4424 | list_for_each_entry(connector, &dev->mode_config.connector_list, head) { | |
4425 | struct intel_output *intel_output = to_intel_output(connector); | |
4426 | struct drm_encoder *encoder = &intel_output->enc; | |
79e53945 | 4427 | |
f8aed700 ML |
4428 | encoder->possible_crtcs = intel_output->crtc_mask; |
4429 | encoder->possible_clones = intel_connector_clones(dev, | |
4430 | intel_output->clone_mask); | |
79e53945 JB |
4431 | } |
4432 | } | |
4433 | ||
4434 | static void intel_user_framebuffer_destroy(struct drm_framebuffer *fb) | |
4435 | { | |
4436 | struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb); | |
4437 | struct drm_device *dev = fb->dev; | |
4438 | ||
4439 | if (fb->fbdev) | |
4440 | intelfb_remove(dev, fb); | |
4441 | ||
4442 | drm_framebuffer_cleanup(fb); | |
4443 | mutex_lock(&dev->struct_mutex); | |
4444 | drm_gem_object_unreference(intel_fb->obj); | |
4445 | mutex_unlock(&dev->struct_mutex); | |
4446 | ||
4447 | kfree(intel_fb); | |
4448 | } | |
4449 | ||
4450 | static int intel_user_framebuffer_create_handle(struct drm_framebuffer *fb, | |
4451 | struct drm_file *file_priv, | |
4452 | unsigned int *handle) | |
4453 | { | |
4454 | struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb); | |
4455 | struct drm_gem_object *object = intel_fb->obj; | |
4456 | ||
4457 | return drm_gem_handle_create(file_priv, object, handle); | |
4458 | } | |
4459 | ||
4460 | static const struct drm_framebuffer_funcs intel_fb_funcs = { | |
4461 | .destroy = intel_user_framebuffer_destroy, | |
4462 | .create_handle = intel_user_framebuffer_create_handle, | |
4463 | }; | |
4464 | ||
4465 | int intel_framebuffer_create(struct drm_device *dev, | |
4466 | struct drm_mode_fb_cmd *mode_cmd, | |
4467 | struct drm_framebuffer **fb, | |
4468 | struct drm_gem_object *obj) | |
4469 | { | |
4470 | struct intel_framebuffer *intel_fb; | |
4471 | int ret; | |
4472 | ||
4473 | intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL); | |
4474 | if (!intel_fb) | |
4475 | return -ENOMEM; | |
4476 | ||
4477 | ret = drm_framebuffer_init(dev, &intel_fb->base, &intel_fb_funcs); | |
4478 | if (ret) { | |
4479 | DRM_ERROR("framebuffer init failed %d\n", ret); | |
4480 | return ret; | |
4481 | } | |
4482 | ||
4483 | drm_helper_mode_fill_fb_struct(&intel_fb->base, mode_cmd); | |
4484 | ||
4485 | intel_fb->obj = obj; | |
4486 | ||
4487 | *fb = &intel_fb->base; | |
4488 | ||
4489 | return 0; | |
4490 | } | |
4491 | ||
4492 | ||
4493 | static struct drm_framebuffer * | |
4494 | intel_user_framebuffer_create(struct drm_device *dev, | |
4495 | struct drm_file *filp, | |
4496 | struct drm_mode_fb_cmd *mode_cmd) | |
4497 | { | |
4498 | struct drm_gem_object *obj; | |
4499 | struct drm_framebuffer *fb; | |
4500 | int ret; | |
4501 | ||
4502 | obj = drm_gem_object_lookup(dev, filp, mode_cmd->handle); | |
4503 | if (!obj) | |
4504 | return NULL; | |
4505 | ||
4506 | ret = intel_framebuffer_create(dev, mode_cmd, &fb, obj); | |
4507 | if (ret) { | |
496818f0 | 4508 | mutex_lock(&dev->struct_mutex); |
79e53945 | 4509 | drm_gem_object_unreference(obj); |
496818f0 | 4510 | mutex_unlock(&dev->struct_mutex); |
79e53945 JB |
4511 | return NULL; |
4512 | } | |
4513 | ||
4514 | return fb; | |
4515 | } | |
4516 | ||
79e53945 | 4517 | static const struct drm_mode_config_funcs intel_mode_funcs = { |
79e53945 JB |
4518 | .fb_create = intel_user_framebuffer_create, |
4519 | .fb_changed = intelfb_probe, | |
4520 | }; | |
4521 | ||
652c393a JB |
4522 | void intel_init_clock_gating(struct drm_device *dev) |
4523 | { | |
4524 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4525 | ||
4526 | /* | |
4527 | * Disable clock gating reported to work incorrectly according to the | |
4528 | * specs, but enable as much else as we can. | |
4529 | */ | |
c03342fa ZW |
4530 | if (IS_IGDNG(dev)) { |
4531 | return; | |
4532 | } else if (IS_G4X(dev)) { | |
652c393a JB |
4533 | uint32_t dspclk_gate; |
4534 | I915_WRITE(RENCLK_GATE_D1, 0); | |
4535 | I915_WRITE(RENCLK_GATE_D2, VF_UNIT_CLOCK_GATE_DISABLE | | |
4536 | GS_UNIT_CLOCK_GATE_DISABLE | | |
4537 | CL_UNIT_CLOCK_GATE_DISABLE); | |
4538 | I915_WRITE(RAMCLK_GATE_D, 0); | |
4539 | dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE | | |
4540 | OVRUNIT_CLOCK_GATE_DISABLE | | |
4541 | OVCUNIT_CLOCK_GATE_DISABLE; | |
4542 | if (IS_GM45(dev)) | |
4543 | dspclk_gate |= DSSUNIT_CLOCK_GATE_DISABLE; | |
4544 | I915_WRITE(DSPCLK_GATE_D, dspclk_gate); | |
4545 | } else if (IS_I965GM(dev)) { | |
4546 | I915_WRITE(RENCLK_GATE_D1, I965_RCC_CLOCK_GATE_DISABLE); | |
4547 | I915_WRITE(RENCLK_GATE_D2, 0); | |
4548 | I915_WRITE(DSPCLK_GATE_D, 0); | |
4549 | I915_WRITE(RAMCLK_GATE_D, 0); | |
4550 | I915_WRITE16(DEUC, 0); | |
4551 | } else if (IS_I965G(dev)) { | |
4552 | I915_WRITE(RENCLK_GATE_D1, I965_RCZ_CLOCK_GATE_DISABLE | | |
4553 | I965_RCC_CLOCK_GATE_DISABLE | | |
4554 | I965_RCPB_CLOCK_GATE_DISABLE | | |
4555 | I965_ISC_CLOCK_GATE_DISABLE | | |
4556 | I965_FBC_CLOCK_GATE_DISABLE); | |
4557 | I915_WRITE(RENCLK_GATE_D2, 0); | |
4558 | } else if (IS_I9XX(dev)) { | |
4559 | u32 dstate = I915_READ(D_STATE); | |
4560 | ||
4561 | dstate |= DSTATE_PLL_D3_OFF | DSTATE_GFX_CLOCK_GATING | | |
4562 | DSTATE_DOT_CLOCK_GATING; | |
4563 | I915_WRITE(D_STATE, dstate); | |
f0f8a9ce | 4564 | } else if (IS_I85X(dev) || IS_I865G(dev)) { |
652c393a JB |
4565 | I915_WRITE(RENCLK_GATE_D1, SV_CLOCK_GATE_DISABLE); |
4566 | } else if (IS_I830(dev)) { | |
4567 | I915_WRITE(DSPCLK_GATE_D, OVRUNIT_CLOCK_GATE_DISABLE); | |
4568 | } | |
97f5ab66 JB |
4569 | |
4570 | /* | |
4571 | * GPU can automatically power down the render unit if given a page | |
4572 | * to save state. | |
4573 | */ | |
4574 | if (I915_HAS_RC6(dev)) { | |
4575 | struct drm_gem_object *pwrctx; | |
4576 | struct drm_i915_gem_object *obj_priv; | |
4577 | int ret; | |
4578 | ||
4579 | pwrctx = drm_gem_object_alloc(dev, 4096); | |
4580 | if (!pwrctx) { | |
4581 | DRM_DEBUG("failed to alloc power context, RC6 disabled\n"); | |
4582 | goto out; | |
4583 | } | |
4584 | ||
4585 | ret = i915_gem_object_pin(pwrctx, 4096); | |
4586 | if (ret) { | |
4587 | DRM_ERROR("failed to pin power context: %d\n", ret); | |
4588 | drm_gem_object_unreference(pwrctx); | |
4589 | goto out; | |
4590 | } | |
4591 | ||
4592 | i915_gem_object_set_to_gtt_domain(pwrctx, 1); | |
4593 | ||
4594 | obj_priv = pwrctx->driver_private; | |
4595 | ||
4596 | I915_WRITE(PWRCTXA, obj_priv->gtt_offset | PWRCTX_EN); | |
4597 | I915_WRITE(MCHBAR_RENDER_STANDBY, | |
4598 | I915_READ(MCHBAR_RENDER_STANDBY) & ~RCX_SW_EXIT); | |
4599 | ||
4600 | dev_priv->pwrctx = pwrctx; | |
4601 | } | |
4602 | ||
4603 | out: | |
4604 | return; | |
652c393a JB |
4605 | } |
4606 | ||
e70236a8 JB |
4607 | /* Set up chip specific display functions */ |
4608 | static void intel_init_display(struct drm_device *dev) | |
4609 | { | |
4610 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4611 | ||
4612 | /* We always want a DPMS function */ | |
4613 | if (IS_IGDNG(dev)) | |
4614 | dev_priv->display.dpms = igdng_crtc_dpms; | |
4615 | else | |
4616 | dev_priv->display.dpms = i9xx_crtc_dpms; | |
4617 | ||
4618 | /* Only mobile has FBC, leave pointers NULL for other chips */ | |
4619 | if (IS_MOBILE(dev)) { | |
74dff282 JB |
4620 | if (IS_GM45(dev)) { |
4621 | dev_priv->display.fbc_enabled = g4x_fbc_enabled; | |
4622 | dev_priv->display.enable_fbc = g4x_enable_fbc; | |
4623 | dev_priv->display.disable_fbc = g4x_disable_fbc; | |
4624 | } else if (IS_I965GM(dev) || IS_I945GM(dev) || IS_I915GM(dev)) { | |
e70236a8 JB |
4625 | dev_priv->display.fbc_enabled = i8xx_fbc_enabled; |
4626 | dev_priv->display.enable_fbc = i8xx_enable_fbc; | |
4627 | dev_priv->display.disable_fbc = i8xx_disable_fbc; | |
4628 | } | |
74dff282 | 4629 | /* 855GM needs testing */ |
e70236a8 JB |
4630 | } |
4631 | ||
4632 | /* Returns the core display clock speed */ | |
43bcd61f | 4633 | if (IS_I945G(dev) || (IS_G33(dev) && ! IS_IGDGM(dev))) |
e70236a8 JB |
4634 | dev_priv->display.get_display_clock_speed = |
4635 | i945_get_display_clock_speed; | |
4636 | else if (IS_I915G(dev)) | |
4637 | dev_priv->display.get_display_clock_speed = | |
4638 | i915_get_display_clock_speed; | |
4639 | else if (IS_I945GM(dev) || IS_845G(dev) || IS_IGDGM(dev)) | |
4640 | dev_priv->display.get_display_clock_speed = | |
4641 | i9xx_misc_get_display_clock_speed; | |
4642 | else if (IS_I915GM(dev)) | |
4643 | dev_priv->display.get_display_clock_speed = | |
4644 | i915gm_get_display_clock_speed; | |
4645 | else if (IS_I865G(dev)) | |
4646 | dev_priv->display.get_display_clock_speed = | |
4647 | i865_get_display_clock_speed; | |
f0f8a9ce | 4648 | else if (IS_I85X(dev)) |
e70236a8 JB |
4649 | dev_priv->display.get_display_clock_speed = |
4650 | i855_get_display_clock_speed; | |
4651 | else /* 852, 830 */ | |
4652 | dev_priv->display.get_display_clock_speed = | |
4653 | i830_get_display_clock_speed; | |
4654 | ||
4655 | /* For FIFO watermark updates */ | |
c03342fa ZW |
4656 | if (IS_IGDNG(dev)) |
4657 | dev_priv->display.update_wm = NULL; | |
4658 | else if (IS_G4X(dev)) | |
e70236a8 JB |
4659 | dev_priv->display.update_wm = g4x_update_wm; |
4660 | else if (IS_I965G(dev)) | |
4661 | dev_priv->display.update_wm = i965_update_wm; | |
4662 | else if (IS_I9XX(dev) || IS_MOBILE(dev)) { | |
4663 | dev_priv->display.update_wm = i9xx_update_wm; | |
4664 | dev_priv->display.get_fifo_size = i9xx_get_fifo_size; | |
4665 | } else { | |
4666 | if (IS_I85X(dev)) | |
4667 | dev_priv->display.get_fifo_size = i85x_get_fifo_size; | |
4668 | else if (IS_845G(dev)) | |
4669 | dev_priv->display.get_fifo_size = i845_get_fifo_size; | |
4670 | else | |
4671 | dev_priv->display.get_fifo_size = i830_get_fifo_size; | |
4672 | dev_priv->display.update_wm = i830_update_wm; | |
4673 | } | |
4674 | } | |
4675 | ||
79e53945 JB |
4676 | void intel_modeset_init(struct drm_device *dev) |
4677 | { | |
652c393a | 4678 | struct drm_i915_private *dev_priv = dev->dev_private; |
79e53945 JB |
4679 | int num_pipe; |
4680 | int i; | |
4681 | ||
4682 | drm_mode_config_init(dev); | |
4683 | ||
4684 | dev->mode_config.min_width = 0; | |
4685 | dev->mode_config.min_height = 0; | |
4686 | ||
4687 | dev->mode_config.funcs = (void *)&intel_mode_funcs; | |
4688 | ||
e70236a8 JB |
4689 | intel_init_display(dev); |
4690 | ||
79e53945 JB |
4691 | if (IS_I965G(dev)) { |
4692 | dev->mode_config.max_width = 8192; | |
4693 | dev->mode_config.max_height = 8192; | |
5e4d6fa7 KP |
4694 | } else if (IS_I9XX(dev)) { |
4695 | dev->mode_config.max_width = 4096; | |
4696 | dev->mode_config.max_height = 4096; | |
79e53945 JB |
4697 | } else { |
4698 | dev->mode_config.max_width = 2048; | |
4699 | dev->mode_config.max_height = 2048; | |
4700 | } | |
4701 | ||
4702 | /* set memory base */ | |
4703 | if (IS_I9XX(dev)) | |
4704 | dev->mode_config.fb_base = pci_resource_start(dev->pdev, 2); | |
4705 | else | |
4706 | dev->mode_config.fb_base = pci_resource_start(dev->pdev, 0); | |
4707 | ||
4708 | if (IS_MOBILE(dev) || IS_I9XX(dev)) | |
4709 | num_pipe = 2; | |
4710 | else | |
4711 | num_pipe = 1; | |
28c97730 | 4712 | DRM_DEBUG_KMS("%d display pipe%s available.\n", |
79e53945 JB |
4713 | num_pipe, num_pipe > 1 ? "s" : ""); |
4714 | ||
652c393a JB |
4715 | if (IS_I85X(dev)) |
4716 | pci_read_config_word(dev->pdev, HPLLCC, &dev_priv->orig_clock); | |
4717 | else if (IS_I9XX(dev) || IS_G4X(dev)) | |
4718 | pci_read_config_word(dev->pdev, GCFGC, &dev_priv->orig_clock); | |
4719 | ||
79e53945 JB |
4720 | for (i = 0; i < num_pipe; i++) { |
4721 | intel_crtc_init(dev, i); | |
4722 | } | |
4723 | ||
4724 | intel_setup_outputs(dev); | |
652c393a JB |
4725 | |
4726 | intel_init_clock_gating(dev); | |
4727 | ||
4728 | INIT_WORK(&dev_priv->idle_work, intel_idle_update); | |
4729 | setup_timer(&dev_priv->idle_timer, intel_gpu_idle_timer, | |
4730 | (unsigned long)dev); | |
02e792fb DV |
4731 | |
4732 | intel_setup_overlay(dev); | |
79e53945 JB |
4733 | } |
4734 | ||
4735 | void intel_modeset_cleanup(struct drm_device *dev) | |
4736 | { | |
652c393a JB |
4737 | struct drm_i915_private *dev_priv = dev->dev_private; |
4738 | struct drm_crtc *crtc; | |
4739 | struct intel_crtc *intel_crtc; | |
4740 | ||
4741 | mutex_lock(&dev->struct_mutex); | |
4742 | ||
4743 | list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { | |
4744 | /* Skip inactive CRTCs */ | |
4745 | if (!crtc->fb) | |
4746 | continue; | |
4747 | ||
4748 | intel_crtc = to_intel_crtc(crtc); | |
4749 | intel_increase_pllclock(crtc, false); | |
4750 | del_timer_sync(&intel_crtc->idle_timer); | |
4751 | } | |
4752 | ||
4753 | intel_increase_renderclock(dev, false); | |
4754 | del_timer_sync(&dev_priv->idle_timer); | |
4755 | ||
e70236a8 JB |
4756 | if (dev_priv->display.disable_fbc) |
4757 | dev_priv->display.disable_fbc(dev); | |
4758 | ||
97f5ab66 | 4759 | if (dev_priv->pwrctx) { |
c1b5dea0 KH |
4760 | struct drm_i915_gem_object *obj_priv; |
4761 | ||
4762 | obj_priv = dev_priv->pwrctx->driver_private; | |
4763 | I915_WRITE(PWRCTXA, obj_priv->gtt_offset &~ PWRCTX_EN); | |
4764 | I915_READ(PWRCTXA); | |
97f5ab66 JB |
4765 | i915_gem_object_unpin(dev_priv->pwrctx); |
4766 | drm_gem_object_unreference(dev_priv->pwrctx); | |
4767 | } | |
4768 | ||
69341a5e KH |
4769 | mutex_unlock(&dev->struct_mutex); |
4770 | ||
79e53945 JB |
4771 | drm_mode_config_cleanup(dev); |
4772 | } | |
4773 | ||
4774 | ||
4775 | /* current intel driver doesn't take advantage of encoders | |
4776 | always give back the encoder for the connector | |
4777 | */ | |
4778 | struct drm_encoder *intel_best_encoder(struct drm_connector *connector) | |
4779 | { | |
4780 | struct intel_output *intel_output = to_intel_output(connector); | |
4781 | ||
4782 | return &intel_output->enc; | |
4783 | } | |
28d52043 DA |
4784 | |
4785 | /* | |
4786 | * set vga decode state - true == enable VGA decode | |
4787 | */ | |
4788 | int intel_modeset_vga_set_state(struct drm_device *dev, bool state) | |
4789 | { | |
4790 | struct drm_i915_private *dev_priv = dev->dev_private; | |
4791 | u16 gmch_ctrl; | |
4792 | ||
4793 | pci_read_config_word(dev_priv->bridge_dev, INTEL_GMCH_CTRL, &gmch_ctrl); | |
4794 | if (state) | |
4795 | gmch_ctrl &= ~INTEL_GMCH_VGA_DISABLE; | |
4796 | else | |
4797 | gmch_ctrl |= INTEL_GMCH_VGA_DISABLE; | |
4798 | pci_write_config_word(dev_priv->bridge_dev, INTEL_GMCH_CTRL, gmch_ctrl); | |
4799 | return 0; | |
4800 | } |