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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 "intel_display.h"
10#include "intel_runtime_pm.h"
11#include "i915_reg.h"
12
13struct drm_i915_private;
14struct intel_encoder;
15
16enum intel_display_power_domain {
17 POWER_DOMAIN_DISPLAY_CORE,
18 POWER_DOMAIN_PIPE_A,
19 POWER_DOMAIN_PIPE_B,
20 POWER_DOMAIN_PIPE_C,
21 POWER_DOMAIN_PIPE_D,
22 POWER_DOMAIN_PIPE_A_PANEL_FITTER,
23 POWER_DOMAIN_PIPE_B_PANEL_FITTER,
24 POWER_DOMAIN_PIPE_C_PANEL_FITTER,
25 POWER_DOMAIN_PIPE_D_PANEL_FITTER,
26 POWER_DOMAIN_TRANSCODER_A,
27 POWER_DOMAIN_TRANSCODER_B,
28 POWER_DOMAIN_TRANSCODER_C,
29 POWER_DOMAIN_TRANSCODER_D,
30 POWER_DOMAIN_TRANSCODER_EDP,
31 /* VDSC/joining for eDP/DSI transcoder (ICL) or pipe A (TGL) */
32 POWER_DOMAIN_TRANSCODER_VDSC_PW2,
33 POWER_DOMAIN_TRANSCODER_DSI_A,
34 POWER_DOMAIN_TRANSCODER_DSI_C,
35 POWER_DOMAIN_PORT_DDI_A_LANES,
36 POWER_DOMAIN_PORT_DDI_B_LANES,
37 POWER_DOMAIN_PORT_DDI_C_LANES,
38 POWER_DOMAIN_PORT_DDI_D_LANES,
39 POWER_DOMAIN_PORT_DDI_E_LANES,
40 POWER_DOMAIN_PORT_DDI_F_LANES,
41 POWER_DOMAIN_PORT_DDI_G_LANES,
42 POWER_DOMAIN_PORT_DDI_H_LANES,
43 POWER_DOMAIN_PORT_DDI_I_LANES,
44
45 POWER_DOMAIN_PORT_DDI_LANES_TC1 = POWER_DOMAIN_PORT_DDI_D_LANES, /* tgl+ */
46 POWER_DOMAIN_PORT_DDI_LANES_TC2,
47 POWER_DOMAIN_PORT_DDI_LANES_TC3,
48 POWER_DOMAIN_PORT_DDI_LANES_TC4,
49 POWER_DOMAIN_PORT_DDI_LANES_TC5,
50 POWER_DOMAIN_PORT_DDI_LANES_TC6,
51
52 POWER_DOMAIN_PORT_DDI_LANES_D_XELPD = POWER_DOMAIN_PORT_DDI_LANES_TC5, /* XELPD */
53 POWER_DOMAIN_PORT_DDI_LANES_E_XELPD,
54
55 POWER_DOMAIN_PORT_DDI_A_IO,
56 POWER_DOMAIN_PORT_DDI_B_IO,
57 POWER_DOMAIN_PORT_DDI_C_IO,
58 POWER_DOMAIN_PORT_DDI_D_IO,
59 POWER_DOMAIN_PORT_DDI_E_IO,
60 POWER_DOMAIN_PORT_DDI_F_IO,
61 POWER_DOMAIN_PORT_DDI_G_IO,
62 POWER_DOMAIN_PORT_DDI_H_IO,
63 POWER_DOMAIN_PORT_DDI_I_IO,
64
65 POWER_DOMAIN_PORT_DDI_IO_TC1 = POWER_DOMAIN_PORT_DDI_D_IO, /* tgl+ */
66 POWER_DOMAIN_PORT_DDI_IO_TC2,
67 POWER_DOMAIN_PORT_DDI_IO_TC3,
68 POWER_DOMAIN_PORT_DDI_IO_TC4,
69 POWER_DOMAIN_PORT_DDI_IO_TC5,
70 POWER_DOMAIN_PORT_DDI_IO_TC6,
71
72 POWER_DOMAIN_PORT_DDI_IO_D_XELPD = POWER_DOMAIN_PORT_DDI_IO_TC5, /* XELPD */
73 POWER_DOMAIN_PORT_DDI_IO_E_XELPD,
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 POWER_DOMAIN_AUX_A,
82 POWER_DOMAIN_AUX_B,
83 POWER_DOMAIN_AUX_C,
84 POWER_DOMAIN_AUX_D,
85 POWER_DOMAIN_AUX_E,
86 POWER_DOMAIN_AUX_F,
87 POWER_DOMAIN_AUX_G,
88 POWER_DOMAIN_AUX_H,
89 POWER_DOMAIN_AUX_I,
90
91 POWER_DOMAIN_AUX_USBC1 = POWER_DOMAIN_AUX_D, /* tgl+ */
92 POWER_DOMAIN_AUX_USBC2,
93 POWER_DOMAIN_AUX_USBC3,
94 POWER_DOMAIN_AUX_USBC4,
95 POWER_DOMAIN_AUX_USBC5,
96 POWER_DOMAIN_AUX_USBC6,
97
98 POWER_DOMAIN_AUX_D_XELPD = POWER_DOMAIN_AUX_USBC5, /* XELPD */
99 POWER_DOMAIN_AUX_E_XELPD,
100
101 POWER_DOMAIN_AUX_IO_A,
102 POWER_DOMAIN_AUX_C_TBT,
103 POWER_DOMAIN_AUX_D_TBT,
104 POWER_DOMAIN_AUX_E_TBT,
105 POWER_DOMAIN_AUX_F_TBT,
106 POWER_DOMAIN_AUX_G_TBT,
107 POWER_DOMAIN_AUX_H_TBT,
108 POWER_DOMAIN_AUX_I_TBT,
109
110 POWER_DOMAIN_AUX_TBT1 = POWER_DOMAIN_AUX_D_TBT, /* tgl+ */
111 POWER_DOMAIN_AUX_TBT2,
112 POWER_DOMAIN_AUX_TBT3,
113 POWER_DOMAIN_AUX_TBT4,
114 POWER_DOMAIN_AUX_TBT5,
115 POWER_DOMAIN_AUX_TBT6,
116
117 POWER_DOMAIN_GMBUS,
118 POWER_DOMAIN_MODESET,
119 POWER_DOMAIN_GT_IRQ,
120 POWER_DOMAIN_DPLL_DC_OFF,
121 POWER_DOMAIN_TC_COLD_OFF,
122 POWER_DOMAIN_INIT,
123
124 POWER_DOMAIN_NUM,
125};
126
127/*
128 * i915_power_well_id:
129 *
130 * IDs used to look up power wells. Power wells accessed directly bypassing
131 * the power domains framework must be assigned a unique ID. The rest of power
132 * wells must be assigned DISP_PW_ID_NONE.
133 */
134enum i915_power_well_id {
135 DISP_PW_ID_NONE,
136
137 VLV_DISP_PW_DISP2D,
138 BXT_DISP_PW_DPIO_CMN_A,
139 VLV_DISP_PW_DPIO_CMN_BC,
140 GLK_DISP_PW_DPIO_CMN_C,
141 CHV_DISP_PW_DPIO_CMN_D,
142 HSW_DISP_PW_GLOBAL,
143 SKL_DISP_PW_MISC_IO,
144 SKL_DISP_PW_1,
145 SKL_DISP_PW_2,
146 ICL_DISP_PW_3,
147 SKL_DISP_DC_OFF,
148 TGL_DISP_PW_TC_COLD_OFF,
149};
150
151#define POWER_DOMAIN_PIPE(pipe) ((pipe) + POWER_DOMAIN_PIPE_A)
152#define POWER_DOMAIN_PIPE_PANEL_FITTER(pipe) \
153 ((pipe) + POWER_DOMAIN_PIPE_A_PANEL_FITTER)
154#define POWER_DOMAIN_TRANSCODER(tran) \
155 ((tran) == TRANSCODER_EDP ? POWER_DOMAIN_TRANSCODER_EDP : \
156 (tran) + POWER_DOMAIN_TRANSCODER_A)
157
158struct i915_power_well;
159
160struct i915_power_well_ops {
161 /*
162 * Synchronize the well's hw state to match the current sw state, for
163 * example enable/disable it based on the current refcount. Called
164 * during driver init and resume time, possibly after first calling
165 * the enable/disable handlers.
166 */
167 void (*sync_hw)(struct drm_i915_private *dev_priv,
168 struct i915_power_well *power_well);
169 /*
170 * Enable the well and resources that depend on it (for example
171 * interrupts located on the well). Called after the 0->1 refcount
172 * transition.
173 */
174 void (*enable)(struct drm_i915_private *dev_priv,
175 struct i915_power_well *power_well);
176 /*
177 * Disable the well and resources that depend on it. Called after
178 * the 1->0 refcount transition.
179 */
180 void (*disable)(struct drm_i915_private *dev_priv,
181 struct i915_power_well *power_well);
182 /* Returns the hw enabled state. */
183 bool (*is_enabled)(struct drm_i915_private *dev_priv,
184 struct i915_power_well *power_well);
185};
186
187struct i915_power_well_regs {
188 i915_reg_t bios;
189 i915_reg_t driver;
190 i915_reg_t kvmr;
191 i915_reg_t debug;
192};
193
194/* Power well structure for haswell */
195struct i915_power_well_desc {
196 const char *name;
197 bool always_on;
198 u64 domains;
199 /* unique identifier for this power well */
200 enum i915_power_well_id id;
201 /*
202 * Arbitraty data associated with this power well. Platform and power
203 * well specific.
204 */
205 union {
206 struct {
207 /*
208 * request/status flag index in the PUNIT power well
209 * control/status registers.
210 */
211 u8 idx;
212 } vlv;
213 struct {
214 enum dpio_phy phy;
215 } bxt;
216 struct {
217 const struct i915_power_well_regs *regs;
218 /*
219 * request/status flag index in the power well
220 * constrol/status registers.
221 */
222 u8 idx;
223 /* Mask of pipes whose IRQ logic is backed by the pw */
224 u8 irq_pipe_mask;
225 /*
226 * Instead of waiting for the status bit to ack enables,
227 * just wait a specific amount of time and then consider
228 * the well enabled.
229 */
230 u16 fixed_enable_delay;
231 /* The pw is backing the VGA functionality */
232 bool has_vga:1;
233 bool has_fuses:1;
234 /*
235 * The pw is for an ICL+ TypeC PHY port in
236 * Thunderbolt mode.
237 */
238 bool is_tc_tbt:1;
239 } hsw;
240 };
241 const struct i915_power_well_ops *ops;
242};
243
244struct i915_power_well {
245 const struct i915_power_well_desc *desc;
246 /* power well enable/disable usage count */
247 int count;
248 /* cached hw enabled state */
249 bool hw_enabled;
250};
251
252struct i915_power_domains {
253 /*
254 * Power wells needed for initialization at driver init and suspend
255 * time are on. They are kept on until after the first modeset.
256 */
257 bool initializing;
258 bool display_core_suspended;
259 int power_well_count;
260
261 intel_wakeref_t init_wakeref;
262 intel_wakeref_t disable_wakeref;
263
264 struct mutex lock;
265 int domain_use_count[POWER_DOMAIN_NUM];
266
267 struct delayed_work async_put_work;
268 intel_wakeref_t async_put_wakeref;
269 u64 async_put_domains[2];
270
271 struct i915_power_well *power_wells;
272};
273
274struct intel_display_power_domain_set {
275 u64 mask;
276#ifdef CONFIG_DRM_I915_DEBUG_RUNTIME_PM
277 intel_wakeref_t wakerefs[POWER_DOMAIN_NUM];
278#endif
279};
280
281#define for_each_power_domain(domain, mask) \
282 for ((domain) = 0; (domain) < POWER_DOMAIN_NUM; (domain)++) \
283 for_each_if(BIT_ULL(domain) & (mask))
284
285#define for_each_power_well(__dev_priv, __power_well) \
286 for ((__power_well) = (__dev_priv)->power_domains.power_wells; \
287 (__power_well) - (__dev_priv)->power_domains.power_wells < \
288 (__dev_priv)->power_domains.power_well_count; \
289 (__power_well)++)
290
291#define for_each_power_well_reverse(__dev_priv, __power_well) \
292 for ((__power_well) = (__dev_priv)->power_domains.power_wells + \
293 (__dev_priv)->power_domains.power_well_count - 1; \
294 (__power_well) - (__dev_priv)->power_domains.power_wells >= 0; \
295 (__power_well)--)
296
297#define for_each_power_domain_well(__dev_priv, __power_well, __domain_mask) \
298 for_each_power_well(__dev_priv, __power_well) \
299 for_each_if((__power_well)->desc->domains & (__domain_mask))
300
301#define for_each_power_domain_well_reverse(__dev_priv, __power_well, __domain_mask) \
302 for_each_power_well_reverse(__dev_priv, __power_well) \
303 for_each_if((__power_well)->desc->domains & (__domain_mask))
304
305int intel_power_domains_init(struct drm_i915_private *dev_priv);
306void intel_power_domains_cleanup(struct drm_i915_private *dev_priv);
307void intel_power_domains_init_hw(struct drm_i915_private *dev_priv, bool resume);
308void intel_power_domains_driver_remove(struct drm_i915_private *dev_priv);
309void intel_power_domains_enable(struct drm_i915_private *dev_priv);
310void intel_power_domains_disable(struct drm_i915_private *dev_priv);
311void intel_power_domains_suspend(struct drm_i915_private *dev_priv,
312 enum i915_drm_suspend_mode);
313void intel_power_domains_resume(struct drm_i915_private *dev_priv);
314
315void intel_display_power_suspend_late(struct drm_i915_private *i915);
316void intel_display_power_resume_early(struct drm_i915_private *i915);
317void intel_display_power_suspend(struct drm_i915_private *i915);
318void intel_display_power_resume(struct drm_i915_private *i915);
319void intel_display_power_set_target_dc_state(struct drm_i915_private *dev_priv,
320 u32 state);
321
322const char *
323intel_display_power_domain_str(enum intel_display_power_domain domain);
324
325bool intel_display_power_is_enabled(struct drm_i915_private *dev_priv,
326 enum intel_display_power_domain domain);
327bool intel_display_power_well_is_enabled(struct drm_i915_private *dev_priv,
328 enum i915_power_well_id power_well_id);
329bool __intel_display_power_is_enabled(struct drm_i915_private *dev_priv,
330 enum intel_display_power_domain domain);
331intel_wakeref_t intel_display_power_get(struct drm_i915_private *dev_priv,
332 enum intel_display_power_domain domain);
333intel_wakeref_t
334intel_display_power_get_if_enabled(struct drm_i915_private *dev_priv,
335 enum intel_display_power_domain domain);
336void __intel_display_power_put_async(struct drm_i915_private *i915,
337 enum intel_display_power_domain domain,
338 intel_wakeref_t wakeref);
339void intel_display_power_flush_work(struct drm_i915_private *i915);
340#if IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)
341void intel_display_power_put(struct drm_i915_private *dev_priv,
342 enum intel_display_power_domain domain,
343 intel_wakeref_t wakeref);
344static inline void
345intel_display_power_put_async(struct drm_i915_private *i915,
346 enum intel_display_power_domain domain,
347 intel_wakeref_t wakeref)
348{
349 __intel_display_power_put_async(i915, domain, wakeref);
350}
351#else
352void intel_display_power_put_unchecked(struct drm_i915_private *dev_priv,
353 enum intel_display_power_domain domain);
354
355static inline void
356intel_display_power_put(struct drm_i915_private *i915,
357 enum intel_display_power_domain domain,
358 intel_wakeref_t wakeref)
359{
360 intel_display_power_put_unchecked(i915, domain);
361}
362
363static inline void
364intel_display_power_put_async(struct drm_i915_private *i915,
365 enum intel_display_power_domain domain,
366 intel_wakeref_t wakeref)
367{
368 __intel_display_power_put_async(i915, domain, -1);
369}
370#endif
371
372void
373intel_display_power_get_in_set(struct drm_i915_private *i915,
374 struct intel_display_power_domain_set *power_domain_set,
375 enum intel_display_power_domain domain);
376
377bool
378intel_display_power_get_in_set_if_enabled(struct drm_i915_private *i915,
379 struct intel_display_power_domain_set *power_domain_set,
380 enum intel_display_power_domain domain);
381
382void
383intel_display_power_put_mask_in_set(struct drm_i915_private *i915,
384 struct intel_display_power_domain_set *power_domain_set,
385 u64 mask);
386
387static inline void
388intel_display_power_put_all_in_set(struct drm_i915_private *i915,
389 struct intel_display_power_domain_set *power_domain_set)
390{
391 intel_display_power_put_mask_in_set(i915, power_domain_set, power_domain_set->mask);
392}
393
394/*
395 * FIXME: We should probably switch this to a 0-based scheme to be consistent
396 * with how we now name/number DBUF_CTL instances.
397 */
398enum dbuf_slice {
399 DBUF_S1,
400 DBUF_S2,
401 DBUF_S3,
402 DBUF_S4,
403 I915_MAX_DBUF_SLICES
404};
405
406void gen9_dbuf_slices_update(struct drm_i915_private *dev_priv,
407 u8 req_slices);
408
409#define with_intel_display_power(i915, domain, wf) \
410 for ((wf) = intel_display_power_get((i915), (domain)); (wf); \
411 intel_display_power_put_async((i915), (domain), (wf)), (wf) = 0)
412
413void chv_phy_powergate_lanes(struct intel_encoder *encoder,
414 bool override, unsigned int mask);
415bool chv_phy_powergate_ch(struct drm_i915_private *dev_priv, enum dpio_phy phy,
416 enum dpio_channel ch, bool override);
417
418#endif /* __INTEL_DISPLAY_POWER_H__ */