1 /* SPDX-License-Identifier: MIT */
2 /*
3 * Copyright © 2019 Intel Corporation
4 */
5
6 #ifndef __INTEL_DISPLAY_POWER_H__
7 #define __INTEL_DISPLAY_POWER_H__
8
9 #include <linux/mutex.h>
10 #include <linux/workqueue.h>
11
12 #include "intel_wakeref.h"
13
14 enum aux_ch;
15 enum port;
16 struct drm_i915_private;
17 struct i915_power_well;
18 struct intel_encoder;
19 struct seq_file;
20
21 /*
22 * Keep the pipe, transcoder, port (DDI_LANES,DDI_IO,AUX) domain instances
23 * consecutive, so that the pipe,transcoder,port -> power domain macros
24 * work correctly.
25 */
26 enum intel_display_power_domain {
27 POWER_DOMAIN_DISPLAY_CORE,
28 POWER_DOMAIN_PIPE_A,
29 POWER_DOMAIN_PIPE_B,
30 POWER_DOMAIN_PIPE_C,
31 POWER_DOMAIN_PIPE_D,
32 POWER_DOMAIN_PIPE_PANEL_FITTER_A,
33 POWER_DOMAIN_PIPE_PANEL_FITTER_B,
34 POWER_DOMAIN_PIPE_PANEL_FITTER_C,
35 POWER_DOMAIN_PIPE_PANEL_FITTER_D,
36 POWER_DOMAIN_TRANSCODER_A,
37 POWER_DOMAIN_TRANSCODER_B,
38 POWER_DOMAIN_TRANSCODER_C,
39 POWER_DOMAIN_TRANSCODER_D,
40 POWER_DOMAIN_TRANSCODER_EDP,
41 POWER_DOMAIN_TRANSCODER_DSI_A,
42 POWER_DOMAIN_TRANSCODER_DSI_C,
43
44 /* VDSC/joining for eDP/DSI transcoder (ICL) or pipe A (TGL) */
45 POWER_DOMAIN_TRANSCODER_VDSC_PW2,
46
47 POWER_DOMAIN_PORT_DDI_LANES_A,
48 POWER_DOMAIN_PORT_DDI_LANES_B,
49 POWER_DOMAIN_PORT_DDI_LANES_C,
50 POWER_DOMAIN_PORT_DDI_LANES_D,
51 POWER_DOMAIN_PORT_DDI_LANES_E,
52 POWER_DOMAIN_PORT_DDI_LANES_F,
53
54 POWER_DOMAIN_PORT_DDI_LANES_TC1,
55 POWER_DOMAIN_PORT_DDI_LANES_TC2,
56 POWER_DOMAIN_PORT_DDI_LANES_TC3,
57 POWER_DOMAIN_PORT_DDI_LANES_TC4,
58 POWER_DOMAIN_PORT_DDI_LANES_TC5,
59 POWER_DOMAIN_PORT_DDI_LANES_TC6,
60
61 POWER_DOMAIN_PORT_DDI_IO_A,
62 POWER_DOMAIN_PORT_DDI_IO_B,
63 POWER_DOMAIN_PORT_DDI_IO_C,
64 POWER_DOMAIN_PORT_DDI_IO_D,
65 POWER_DOMAIN_PORT_DDI_IO_E,
66 POWER_DOMAIN_PORT_DDI_IO_F,
67
68 POWER_DOMAIN_PORT_DDI_IO_TC1,
69 POWER_DOMAIN_PORT_DDI_IO_TC2,
70 POWER_DOMAIN_PORT_DDI_IO_TC3,
71 POWER_DOMAIN_PORT_DDI_IO_TC4,
72 POWER_DOMAIN_PORT_DDI_IO_TC5,
73 POWER_DOMAIN_PORT_DDI_IO_TC6,
74
75 POWER_DOMAIN_PORT_DSI,
76 POWER_DOMAIN_PORT_CRT,
77 POWER_DOMAIN_PORT_OTHER,
78 POWER_DOMAIN_VGA,
79 POWER_DOMAIN_AUDIO_MMIO,
80 POWER_DOMAIN_AUDIO_PLAYBACK,
81
82 POWER_DOMAIN_AUX_IO_A,
83 POWER_DOMAIN_AUX_IO_B,
84 POWER_DOMAIN_AUX_IO_C,
85 POWER_DOMAIN_AUX_IO_D,
86 POWER_DOMAIN_AUX_IO_E,
87 POWER_DOMAIN_AUX_IO_F,
88
89 POWER_DOMAIN_AUX_A,
90 POWER_DOMAIN_AUX_B,
91 POWER_DOMAIN_AUX_C,
92 POWER_DOMAIN_AUX_D,
93 POWER_DOMAIN_AUX_E,
94 POWER_DOMAIN_AUX_F,
95
96 POWER_DOMAIN_AUX_USBC1,
97 POWER_DOMAIN_AUX_USBC2,
98 POWER_DOMAIN_AUX_USBC3,
99 POWER_DOMAIN_AUX_USBC4,
100 POWER_DOMAIN_AUX_USBC5,
101 POWER_DOMAIN_AUX_USBC6,
102
103 POWER_DOMAIN_AUX_TBT1,
104 POWER_DOMAIN_AUX_TBT2,
105 POWER_DOMAIN_AUX_TBT3,
106 POWER_DOMAIN_AUX_TBT4,
107 POWER_DOMAIN_AUX_TBT5,
108 POWER_DOMAIN_AUX_TBT6,
109
110 POWER_DOMAIN_GMBUS,
111 POWER_DOMAIN_MODESET,
112 POWER_DOMAIN_GT_IRQ,
113 POWER_DOMAIN_DC_OFF,
114 POWER_DOMAIN_TC_COLD_OFF,
115 POWER_DOMAIN_INIT,
116
117 POWER_DOMAIN_NUM,
118 POWER_DOMAIN_INVALID = POWER_DOMAIN_NUM,
119 };
120
121 #define POWER_DOMAIN_PIPE(pipe) ((pipe) + POWER_DOMAIN_PIPE_A)
122 #define POWER_DOMAIN_PIPE_PANEL_FITTER(pipe) \
123 ((pipe) + POWER_DOMAIN_PIPE_PANEL_FITTER_A)
124 #define POWER_DOMAIN_TRANSCODER(tran) \
125 ((tran) == TRANSCODER_EDP ? POWER_DOMAIN_TRANSCODER_EDP : \
126 (tran) + POWER_DOMAIN_TRANSCODER_A)
127
128 struct intel_power_domain_mask {
129 DECLARE_BITMAP(bits, POWER_DOMAIN_NUM);
130 };
131
132 struct i915_power_domains {
133 /*
134 * Power wells needed for initialization at driver init and suspend
135 * time are on. They are kept on until after the first modeset.
136 */
137 bool initializing;
138 bool display_core_suspended;
139 int power_well_count;
140
141 u32 dc_state;
142 u32 target_dc_state;
143 u32 allowed_dc_mask;
144
145 intel_wakeref_t init_wakeref;
146 intel_wakeref_t disable_wakeref;
147
148 struct rwlock lock;
149 int domain_use_count[POWER_DOMAIN_NUM];
150
151 struct delayed_work async_put_work;
152 intel_wakeref_t async_put_wakeref;
153 struct intel_power_domain_mask async_put_domains[2];
154 int async_put_next_delay;
155
156 struct i915_power_well *power_wells;
157 };
158
159 struct intel_display_power_domain_set {
160 struct intel_power_domain_mask mask;
161 #ifdef CONFIG_DRM_I915_DEBUG_RUNTIME_PM
162 intel_wakeref_t wakerefs[POWER_DOMAIN_NUM];
163 #endif
164 };
165
166 #define for_each_power_domain(__domain, __mask) \
167 for ((__domain) = 0; (__domain) < POWER_DOMAIN_NUM; (__domain)++) \
168 for_each_if(test_bit((__domain), (__mask)->bits))
169
170 int intel_power_domains_init(struct drm_i915_private *dev_priv);
171 void intel_power_domains_cleanup(struct drm_i915_private *dev_priv);
172 void intel_power_domains_init_hw(struct drm_i915_private *dev_priv, bool resume);
173 void intel_power_domains_driver_remove(struct drm_i915_private *dev_priv);
174 void intel_power_domains_enable(struct drm_i915_private *dev_priv);
175 void intel_power_domains_disable(struct drm_i915_private *dev_priv);
176 void intel_power_domains_suspend(struct drm_i915_private *dev_priv, bool s2idle);
177 void intel_power_domains_resume(struct drm_i915_private *dev_priv);
178 void intel_power_domains_sanitize_state(struct drm_i915_private *dev_priv);
179
180 void intel_display_power_suspend_late(struct drm_i915_private *i915);
181 void intel_display_power_resume_early(struct drm_i915_private *i915);
182 void intel_display_power_suspend(struct drm_i915_private *i915);
183 void intel_display_power_resume(struct drm_i915_private *i915);
184 void intel_display_power_set_target_dc_state(struct drm_i915_private *dev_priv,
185 u32 state);
186
187 const char *
188 intel_display_power_domain_str(enum intel_display_power_domain domain);
189
190 bool intel_display_power_is_enabled(struct drm_i915_private *dev_priv,
191 enum intel_display_power_domain domain);
192 bool __intel_display_power_is_enabled(struct drm_i915_private *dev_priv,
193 enum intel_display_power_domain domain);
194 intel_wakeref_t intel_display_power_get(struct drm_i915_private *dev_priv,
195 enum intel_display_power_domain domain);
196 intel_wakeref_t
197 intel_display_power_get_if_enabled(struct drm_i915_private *dev_priv,
198 enum intel_display_power_domain domain);
199 void __intel_display_power_put_async(struct drm_i915_private *i915,
200 enum intel_display_power_domain domain,
201 intel_wakeref_t wakeref,
202 int delay_ms);
203 void intel_display_power_flush_work(struct drm_i915_private *i915);
204 #if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
205 void intel_display_power_put(struct drm_i915_private *dev_priv,
206 enum intel_display_power_domain domain,
207 intel_wakeref_t wakeref);
208 static inline void
intel_display_power_put_async(struct drm_i915_private * i915,enum intel_display_power_domain domain,intel_wakeref_t wakeref)209 intel_display_power_put_async(struct drm_i915_private *i915,
210 enum intel_display_power_domain domain,
211 intel_wakeref_t wakeref)
212 {
213 __intel_display_power_put_async(i915, domain, wakeref, -1);
214 }
215
216 static inline void
intel_display_power_put_async_delay(struct drm_i915_private * i915,enum intel_display_power_domain domain,intel_wakeref_t wakeref,int delay_ms)217 intel_display_power_put_async_delay(struct drm_i915_private *i915,
218 enum intel_display_power_domain domain,
219 intel_wakeref_t wakeref,
220 int delay_ms)
221 {
222 __intel_display_power_put_async(i915, domain, wakeref, delay_ms);
223 }
224 #else
225 void intel_display_power_put_unchecked(struct drm_i915_private *dev_priv,
226 enum intel_display_power_domain domain);
227
228 static inline void
intel_display_power_put(struct drm_i915_private * i915,enum intel_display_power_domain domain,intel_wakeref_t wakeref)229 intel_display_power_put(struct drm_i915_private *i915,
230 enum intel_display_power_domain domain,
231 intel_wakeref_t wakeref)
232 {
233 intel_display_power_put_unchecked(i915, domain);
234 }
235
236 static inline void
intel_display_power_put_async(struct drm_i915_private * i915,enum intel_display_power_domain domain,intel_wakeref_t wakeref)237 intel_display_power_put_async(struct drm_i915_private *i915,
238 enum intel_display_power_domain domain,
239 intel_wakeref_t wakeref)
240 {
241 __intel_display_power_put_async(i915, domain, -1, -1);
242 }
243
244 static inline void
intel_display_power_put_async_delay(struct drm_i915_private * i915,enum intel_display_power_domain domain,intel_wakeref_t wakeref,int delay_ms)245 intel_display_power_put_async_delay(struct drm_i915_private *i915,
246 enum intel_display_power_domain domain,
247 intel_wakeref_t wakeref,
248 int delay_ms)
249 {
250 __intel_display_power_put_async(i915, domain, -1, delay_ms);
251 }
252 #endif
253
254 void
255 intel_display_power_get_in_set(struct drm_i915_private *i915,
256 struct intel_display_power_domain_set *power_domain_set,
257 enum intel_display_power_domain domain);
258
259 bool
260 intel_display_power_get_in_set_if_enabled(struct drm_i915_private *i915,
261 struct intel_display_power_domain_set *power_domain_set,
262 enum intel_display_power_domain domain);
263
264 void
265 intel_display_power_put_mask_in_set(struct drm_i915_private *i915,
266 struct intel_display_power_domain_set *power_domain_set,
267 struct intel_power_domain_mask *mask);
268
269 static inline void
intel_display_power_put_all_in_set(struct drm_i915_private * i915,struct intel_display_power_domain_set * power_domain_set)270 intel_display_power_put_all_in_set(struct drm_i915_private *i915,
271 struct intel_display_power_domain_set *power_domain_set)
272 {
273 intel_display_power_put_mask_in_set(i915, power_domain_set, &power_domain_set->mask);
274 }
275
276 void intel_display_power_debug(struct drm_i915_private *i915, struct seq_file *m);
277
278 enum intel_display_power_domain
279 intel_display_power_ddi_lanes_domain(struct drm_i915_private *i915, enum port port);
280 enum intel_display_power_domain
281 intel_display_power_ddi_io_domain(struct drm_i915_private *i915, enum port port);
282 enum intel_display_power_domain
283 intel_display_power_aux_io_domain(struct drm_i915_private *i915, enum aux_ch aux_ch);
284 enum intel_display_power_domain
285 intel_display_power_legacy_aux_domain(struct drm_i915_private *i915, enum aux_ch aux_ch);
286 enum intel_display_power_domain
287 intel_display_power_tbt_aux_domain(struct drm_i915_private *i915, enum aux_ch aux_ch);
288
289 /*
290 * FIXME: We should probably switch this to a 0-based scheme to be consistent
291 * with how we now name/number DBUF_CTL instances.
292 */
293 enum dbuf_slice {
294 DBUF_S1,
295 DBUF_S2,
296 DBUF_S3,
297 DBUF_S4,
298 I915_MAX_DBUF_SLICES
299 };
300
301 void gen9_dbuf_slices_update(struct drm_i915_private *dev_priv,
302 u8 req_slices);
303
304 #define with_intel_display_power(i915, domain, wf) \
305 for ((wf) = intel_display_power_get((i915), (domain)); (wf); \
306 intel_display_power_put_async((i915), (domain), (wf)), (wf) = 0)
307
308 #define with_intel_display_power_if_enabled(i915, domain, wf) \
309 for ((wf) = intel_display_power_get_if_enabled((i915), (domain)); (wf); \
310 intel_display_power_put_async((i915), (domain), (wf)), (wf) = 0)
311
312 #endif /* __INTEL_DISPLAY_POWER_H__ */
313