Commit | Line | Data |
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ad67ef68 PW |
1 | /* |
2 | * OMAP powerdomain control | |
3 | * | |
4 | * Copyright (C) 2007-2008 Texas Instruments, Inc. | |
694606c4 | 5 | * Copyright (C) 2007-2011 Nokia Corporation |
ad67ef68 PW |
6 | * |
7 | * Written by Paul Walmsley | |
3a759f09 | 8 | * Added OMAP4 specific support by Abhijit Pagare <abhijitpagare@ti.com> |
4788da26 | 9 | * State counting code by Tero Kristo <tero.kristo@nokia.com> |
3a759f09 | 10 | * |
ad67ef68 PW |
11 | * This program is free software; you can redistribute it and/or modify |
12 | * it under the terms of the GNU General Public License version 2 as | |
13 | * published by the Free Software Foundation. | |
14 | */ | |
33903eb5 | 15 | #undef DEBUG |
ad67ef68 PW |
16 | |
17 | #include <linux/kernel.h> | |
ad67ef68 | 18 | #include <linux/types.h> |
ad67ef68 PW |
19 | #include <linux/list.h> |
20 | #include <linux/errno.h> | |
9b7fc907 | 21 | #include <linux/string.h> |
5e7c58dc JP |
22 | #include <trace/events/power.h> |
23 | ||
59fb659b | 24 | #include "cm2xxx_3xxx.h" |
a64bb9cd | 25 | #include "prcm44xx.h" |
59fb659b PW |
26 | #include "cm44xx.h" |
27 | #include "prm2xxx_3xxx.h" | |
d198b514 | 28 | #include "prm44xx.h" |
ad67ef68 | 29 | |
5e7c58dc | 30 | #include <asm/cpu.h> |
ce491cf8 | 31 | #include <plat/cpu.h> |
72e06d08 | 32 | #include "powerdomain.h" |
1540f214 | 33 | #include "clockdomain.h" |
55ed9694 | 34 | #include <plat/prcm.h> |
ad67ef68 | 35 | |
6199ab26 PDS |
36 | #include "pm.h" |
37 | ||
5e7c58dc JP |
38 | #define PWRDM_TRACE_STATES_FLAG (1<<31) |
39 | ||
ba20bb12 PDS |
40 | enum { |
41 | PWRDM_STATE_NOW = 0, | |
42 | PWRDM_STATE_PREV, | |
43 | }; | |
44 | ||
3a759f09 | 45 | |
ad67ef68 PW |
46 | /* pwrdm_list contains all registered struct powerdomains */ |
47 | static LIST_HEAD(pwrdm_list); | |
48 | ||
3b1e8b21 RN |
49 | static struct pwrdm_ops *arch_pwrdm; |
50 | ||
ad67ef68 PW |
51 | /* Private functions */ |
52 | ||
ad67ef68 PW |
53 | static struct powerdomain *_pwrdm_lookup(const char *name) |
54 | { | |
55 | struct powerdomain *pwrdm, *temp_pwrdm; | |
56 | ||
57 | pwrdm = NULL; | |
58 | ||
59 | list_for_each_entry(temp_pwrdm, &pwrdm_list, node) { | |
60 | if (!strcmp(name, temp_pwrdm->name)) { | |
61 | pwrdm = temp_pwrdm; | |
62 | break; | |
63 | } | |
64 | } | |
65 | ||
66 | return pwrdm; | |
67 | } | |
68 | ||
e909d62a PW |
69 | /** |
70 | * _pwrdm_register - register a powerdomain | |
71 | * @pwrdm: struct powerdomain * to register | |
72 | * | |
73 | * Adds a powerdomain to the internal powerdomain list. Returns | |
74 | * -EINVAL if given a null pointer, -EEXIST if a powerdomain is | |
75 | * already registered by the provided name, or 0 upon success. | |
76 | */ | |
77 | static int _pwrdm_register(struct powerdomain *pwrdm) | |
78 | { | |
79 | int i; | |
80 | ||
a64bb9cd | 81 | if (!pwrdm || !pwrdm->name) |
e909d62a PW |
82 | return -EINVAL; |
83 | ||
84 | if (!omap_chip_is(pwrdm->omap_chip)) | |
85 | return -EINVAL; | |
86 | ||
a64bb9cd PW |
87 | if (cpu_is_omap44xx() && |
88 | pwrdm->prcm_partition == OMAP4430_INVALID_PRCM_PARTITION) { | |
89 | pr_err("powerdomain: %s: missing OMAP4 PRCM partition ID\n", | |
90 | pwrdm->name); | |
91 | return -EINVAL; | |
92 | } | |
93 | ||
e909d62a PW |
94 | if (_pwrdm_lookup(pwrdm->name)) |
95 | return -EEXIST; | |
96 | ||
97 | list_add(&pwrdm->node, &pwrdm_list); | |
98 | ||
99 | /* Initialize the powerdomain's state counter */ | |
cf57aa7c | 100 | for (i = 0; i < PWRDM_MAX_PWRSTS; i++) |
e909d62a PW |
101 | pwrdm->state_counter[i] = 0; |
102 | ||
cde08f81 TG |
103 | pwrdm->ret_logic_off_counter = 0; |
104 | for (i = 0; i < pwrdm->banks; i++) | |
105 | pwrdm->ret_mem_off_counter[i] = 0; | |
106 | ||
e909d62a PW |
107 | pwrdm_wait_transition(pwrdm); |
108 | pwrdm->state = pwrdm_read_pwrst(pwrdm); | |
109 | pwrdm->state_counter[pwrdm->state] = 1; | |
110 | ||
111 | pr_debug("powerdomain: registered %s\n", pwrdm->name); | |
112 | ||
113 | return 0; | |
114 | } | |
115 | ||
cde08f81 TG |
116 | static void _update_logic_membank_counters(struct powerdomain *pwrdm) |
117 | { | |
118 | int i; | |
119 | u8 prev_logic_pwrst, prev_mem_pwrst; | |
120 | ||
121 | prev_logic_pwrst = pwrdm_read_prev_logic_pwrst(pwrdm); | |
122 | if ((pwrdm->pwrsts_logic_ret == PWRSTS_OFF_RET) && | |
123 | (prev_logic_pwrst == PWRDM_POWER_OFF)) | |
124 | pwrdm->ret_logic_off_counter++; | |
125 | ||
126 | for (i = 0; i < pwrdm->banks; i++) { | |
127 | prev_mem_pwrst = pwrdm_read_prev_mem_pwrst(pwrdm, i); | |
128 | ||
129 | if ((pwrdm->pwrsts_mem_ret[i] == PWRSTS_OFF_RET) && | |
130 | (prev_mem_pwrst == PWRDM_POWER_OFF)) | |
131 | pwrdm->ret_mem_off_counter[i]++; | |
132 | } | |
133 | } | |
134 | ||
ba20bb12 PDS |
135 | static int _pwrdm_state_switch(struct powerdomain *pwrdm, int flag) |
136 | { | |
137 | ||
5e7c58dc | 138 | int prev, state, trace_state = 0; |
ba20bb12 PDS |
139 | |
140 | if (pwrdm == NULL) | |
141 | return -EINVAL; | |
142 | ||
143 | state = pwrdm_read_pwrst(pwrdm); | |
144 | ||
145 | switch (flag) { | |
146 | case PWRDM_STATE_NOW: | |
147 | prev = pwrdm->state; | |
148 | break; | |
149 | case PWRDM_STATE_PREV: | |
150 | prev = pwrdm_read_prev_pwrst(pwrdm); | |
151 | if (pwrdm->state != prev) | |
152 | pwrdm->state_counter[prev]++; | |
cde08f81 TG |
153 | if (prev == PWRDM_POWER_RET) |
154 | _update_logic_membank_counters(pwrdm); | |
5e7c58dc JP |
155 | /* |
156 | * If the power domain did not hit the desired state, | |
157 | * generate a trace event with both the desired and hit states | |
158 | */ | |
159 | if (state != prev) { | |
160 | trace_state = (PWRDM_TRACE_STATES_FLAG | | |
161 | ((state & OMAP_POWERSTATE_MASK) << 8) | | |
162 | ((prev & OMAP_POWERSTATE_MASK) << 0)); | |
163 | trace_power_domain_target(pwrdm->name, trace_state, | |
164 | smp_processor_id()); | |
165 | } | |
ba20bb12 PDS |
166 | break; |
167 | default: | |
168 | return -EINVAL; | |
169 | } | |
170 | ||
171 | if (state != prev) | |
172 | pwrdm->state_counter[state]++; | |
173 | ||
6199ab26 PDS |
174 | pm_dbg_update_time(pwrdm, prev); |
175 | ||
ba20bb12 PDS |
176 | pwrdm->state = state; |
177 | ||
178 | return 0; | |
179 | } | |
180 | ||
6199ab26 | 181 | static int _pwrdm_pre_transition_cb(struct powerdomain *pwrdm, void *unused) |
ba20bb12 PDS |
182 | { |
183 | pwrdm_clear_all_prev_pwrst(pwrdm); | |
184 | _pwrdm_state_switch(pwrdm, PWRDM_STATE_NOW); | |
185 | return 0; | |
186 | } | |
187 | ||
6199ab26 | 188 | static int _pwrdm_post_transition_cb(struct powerdomain *pwrdm, void *unused) |
ba20bb12 PDS |
189 | { |
190 | _pwrdm_state_switch(pwrdm, PWRDM_STATE_PREV); | |
191 | return 0; | |
192 | } | |
193 | ||
ad67ef68 PW |
194 | /* Public functions */ |
195 | ||
196 | /** | |
197 | * pwrdm_init - set up the powerdomain layer | |
c956b753 | 198 | * @pwrdms: array of struct powerdomain pointers to register |
25985edc | 199 | * @custom_funcs: func pointers for arch specific implementations |
ad67ef68 | 200 | * |
c956b753 RN |
201 | * Loop through the array of powerdomains @pwrdms, registering all |
202 | * that are available on the current CPU. Also, program all | |
203 | * powerdomain target state as ON; this is to prevent domains from | |
204 | * hitting low power states (if bootloader has target states set to | |
205 | * something other than ON) and potentially even losing context while | |
206 | * PM is not fully initialized. The PM late init code can then program | |
207 | * the desired target state for all the power domains. No return | |
208 | * value. | |
ad67ef68 | 209 | */ |
c956b753 | 210 | void pwrdm_init(struct powerdomain **pwrdms, struct pwrdm_ops *custom_funcs) |
ad67ef68 PW |
211 | { |
212 | struct powerdomain **p = NULL; | |
c956b753 | 213 | struct powerdomain *temp_p; |
ad67ef68 | 214 | |
3b1e8b21 RN |
215 | if (!custom_funcs) |
216 | WARN(1, "powerdomain: No custom pwrdm functions registered\n"); | |
217 | else | |
218 | arch_pwrdm = custom_funcs; | |
219 | ||
c956b753 RN |
220 | if (pwrdms) { |
221 | for (p = pwrdms; *p; p++) | |
e909d62a | 222 | _pwrdm_register(*p); |
ad67ef68 | 223 | } |
c956b753 RN |
224 | |
225 | list_for_each_entry(temp_p, &pwrdm_list, node) | |
226 | pwrdm_set_next_pwrst(temp_p, PWRDM_POWER_ON); | |
ad67ef68 PW |
227 | } |
228 | ||
229 | /** | |
230 | * pwrdm_lookup - look up a powerdomain by name, return a pointer | |
231 | * @name: name of powerdomain | |
232 | * | |
f0271d65 PW |
233 | * Find a registered powerdomain by its name @name. Returns a pointer |
234 | * to the struct powerdomain if found, or NULL otherwise. | |
ad67ef68 PW |
235 | */ |
236 | struct powerdomain *pwrdm_lookup(const char *name) | |
237 | { | |
238 | struct powerdomain *pwrdm; | |
ad67ef68 PW |
239 | |
240 | if (!name) | |
241 | return NULL; | |
242 | ||
ad67ef68 | 243 | pwrdm = _pwrdm_lookup(name); |
ad67ef68 PW |
244 | |
245 | return pwrdm; | |
246 | } | |
247 | ||
248 | /** | |
e909d62a | 249 | * pwrdm_for_each - call function on each registered clockdomain |
ad67ef68 PW |
250 | * @fn: callback function * |
251 | * | |
f0271d65 PW |
252 | * Call the supplied function @fn for each registered powerdomain. |
253 | * The callback function @fn can return anything but 0 to bail out | |
254 | * early from the iterator. Returns the last return value of the | |
255 | * callback function, which should be 0 for success or anything else | |
256 | * to indicate failure; or -EINVAL if the function pointer is null. | |
ad67ef68 | 257 | */ |
e909d62a PW |
258 | int pwrdm_for_each(int (*fn)(struct powerdomain *pwrdm, void *user), |
259 | void *user) | |
ad67ef68 PW |
260 | { |
261 | struct powerdomain *temp_pwrdm; | |
ad67ef68 PW |
262 | int ret = 0; |
263 | ||
264 | if (!fn) | |
265 | return -EINVAL; | |
266 | ||
ad67ef68 | 267 | list_for_each_entry(temp_pwrdm, &pwrdm_list, node) { |
6199ab26 | 268 | ret = (*fn)(temp_pwrdm, user); |
ad67ef68 PW |
269 | if (ret) |
270 | break; | |
271 | } | |
ee894b18 AB |
272 | |
273 | return ret; | |
274 | } | |
275 | ||
8420bb13 PW |
276 | /** |
277 | * pwrdm_add_clkdm - add a clockdomain to a powerdomain | |
278 | * @pwrdm: struct powerdomain * to add the clockdomain to | |
279 | * @clkdm: struct clockdomain * to associate with a powerdomain | |
280 | * | |
f0271d65 | 281 | * Associate the clockdomain @clkdm with a powerdomain @pwrdm. This |
8420bb13 PW |
282 | * enables the use of pwrdm_for_each_clkdm(). Returns -EINVAL if |
283 | * presented with invalid pointers; -ENOMEM if memory could not be allocated; | |
284 | * or 0 upon success. | |
285 | */ | |
286 | int pwrdm_add_clkdm(struct powerdomain *pwrdm, struct clockdomain *clkdm) | |
287 | { | |
8420bb13 PW |
288 | int i; |
289 | int ret = -EINVAL; | |
290 | ||
291 | if (!pwrdm || !clkdm) | |
292 | return -EINVAL; | |
293 | ||
294 | pr_debug("powerdomain: associating clockdomain %s with powerdomain " | |
295 | "%s\n", clkdm->name, pwrdm->name); | |
296 | ||
8420bb13 PW |
297 | for (i = 0; i < PWRDM_MAX_CLKDMS; i++) { |
298 | if (!pwrdm->pwrdm_clkdms[i]) | |
299 | break; | |
300 | #ifdef DEBUG | |
301 | if (pwrdm->pwrdm_clkdms[i] == clkdm) { | |
302 | ret = -EINVAL; | |
303 | goto pac_exit; | |
304 | } | |
305 | #endif | |
306 | } | |
307 | ||
308 | if (i == PWRDM_MAX_CLKDMS) { | |
309 | pr_debug("powerdomain: increase PWRDM_MAX_CLKDMS for " | |
310 | "pwrdm %s clkdm %s\n", pwrdm->name, clkdm->name); | |
311 | WARN_ON(1); | |
312 | ret = -ENOMEM; | |
313 | goto pac_exit; | |
314 | } | |
315 | ||
316 | pwrdm->pwrdm_clkdms[i] = clkdm; | |
317 | ||
318 | ret = 0; | |
319 | ||
320 | pac_exit: | |
8420bb13 PW |
321 | return ret; |
322 | } | |
323 | ||
324 | /** | |
325 | * pwrdm_del_clkdm - remove a clockdomain from a powerdomain | |
326 | * @pwrdm: struct powerdomain * to add the clockdomain to | |
327 | * @clkdm: struct clockdomain * to associate with a powerdomain | |
328 | * | |
f0271d65 PW |
329 | * Dissociate the clockdomain @clkdm from the powerdomain |
330 | * @pwrdm. Returns -EINVAL if presented with invalid pointers; -ENOENT | |
331 | * if @clkdm was not associated with the powerdomain, or 0 upon | |
332 | * success. | |
8420bb13 PW |
333 | */ |
334 | int pwrdm_del_clkdm(struct powerdomain *pwrdm, struct clockdomain *clkdm) | |
335 | { | |
8420bb13 PW |
336 | int ret = -EINVAL; |
337 | int i; | |
338 | ||
339 | if (!pwrdm || !clkdm) | |
340 | return -EINVAL; | |
341 | ||
342 | pr_debug("powerdomain: dissociating clockdomain %s from powerdomain " | |
343 | "%s\n", clkdm->name, pwrdm->name); | |
344 | ||
8420bb13 PW |
345 | for (i = 0; i < PWRDM_MAX_CLKDMS; i++) |
346 | if (pwrdm->pwrdm_clkdms[i] == clkdm) | |
347 | break; | |
348 | ||
349 | if (i == PWRDM_MAX_CLKDMS) { | |
350 | pr_debug("powerdomain: clkdm %s not associated with pwrdm " | |
351 | "%s ?!\n", clkdm->name, pwrdm->name); | |
352 | ret = -ENOENT; | |
353 | goto pdc_exit; | |
354 | } | |
355 | ||
356 | pwrdm->pwrdm_clkdms[i] = NULL; | |
357 | ||
358 | ret = 0; | |
359 | ||
360 | pdc_exit: | |
8420bb13 PW |
361 | return ret; |
362 | } | |
363 | ||
364 | /** | |
365 | * pwrdm_for_each_clkdm - call function on each clkdm in a pwrdm | |
366 | * @pwrdm: struct powerdomain * to iterate over | |
367 | * @fn: callback function * | |
368 | * | |
f0271d65 PW |
369 | * Call the supplied function @fn for each clockdomain in the powerdomain |
370 | * @pwrdm. The callback function can return anything but 0 to bail | |
e909d62a PW |
371 | * out early from the iterator. Returns -EINVAL if presented with |
372 | * invalid pointers; or passes along the last return value of the | |
373 | * callback function, which should be 0 for success or anything else | |
374 | * to indicate failure. | |
8420bb13 PW |
375 | */ |
376 | int pwrdm_for_each_clkdm(struct powerdomain *pwrdm, | |
377 | int (*fn)(struct powerdomain *pwrdm, | |
378 | struct clockdomain *clkdm)) | |
379 | { | |
8420bb13 PW |
380 | int ret = 0; |
381 | int i; | |
382 | ||
383 | if (!fn) | |
384 | return -EINVAL; | |
385 | ||
8420bb13 PW |
386 | for (i = 0; i < PWRDM_MAX_CLKDMS && !ret; i++) |
387 | ret = (*fn)(pwrdm, pwrdm->pwrdm_clkdms[i]); | |
388 | ||
8420bb13 PW |
389 | return ret; |
390 | } | |
391 | ||
ad67ef68 PW |
392 | /** |
393 | * pwrdm_get_mem_bank_count - get number of memory banks in this powerdomain | |
394 | * @pwrdm: struct powerdomain * | |
395 | * | |
f0271d65 | 396 | * Return the number of controllable memory banks in powerdomain @pwrdm, |
ad67ef68 PW |
397 | * starting with 1. Returns -EINVAL if the powerdomain pointer is null. |
398 | */ | |
399 | int pwrdm_get_mem_bank_count(struct powerdomain *pwrdm) | |
400 | { | |
401 | if (!pwrdm) | |
402 | return -EINVAL; | |
403 | ||
404 | return pwrdm->banks; | |
405 | } | |
406 | ||
407 | /** | |
408 | * pwrdm_set_next_pwrst - set next powerdomain power state | |
409 | * @pwrdm: struct powerdomain * to set | |
410 | * @pwrst: one of the PWRDM_POWER_* macros | |
411 | * | |
f0271d65 | 412 | * Set the powerdomain @pwrdm's next power state to @pwrst. The powerdomain |
ad67ef68 PW |
413 | * may not enter this state immediately if the preconditions for this state |
414 | * have not been satisfied. Returns -EINVAL if the powerdomain pointer is | |
415 | * null or if the power state is invalid for the powerdomin, or returns 0 | |
416 | * upon success. | |
417 | */ | |
418 | int pwrdm_set_next_pwrst(struct powerdomain *pwrdm, u8 pwrst) | |
419 | { | |
f327e07b RN |
420 | int ret = -EINVAL; |
421 | ||
ad67ef68 PW |
422 | if (!pwrdm) |
423 | return -EINVAL; | |
424 | ||
425 | if (!(pwrdm->pwrsts & (1 << pwrst))) | |
426 | return -EINVAL; | |
427 | ||
428 | pr_debug("powerdomain: setting next powerstate for %s to %0x\n", | |
429 | pwrdm->name, pwrst); | |
430 | ||
5e7c58dc JP |
431 | if (arch_pwrdm && arch_pwrdm->pwrdm_set_next_pwrst) { |
432 | /* Trace the pwrdm desired target state */ | |
433 | trace_power_domain_target(pwrdm->name, pwrst, | |
434 | smp_processor_id()); | |
435 | /* Program the pwrdm desired target state */ | |
f327e07b | 436 | ret = arch_pwrdm->pwrdm_set_next_pwrst(pwrdm, pwrst); |
5e7c58dc | 437 | } |
ad67ef68 | 438 | |
f327e07b | 439 | return ret; |
ad67ef68 PW |
440 | } |
441 | ||
442 | /** | |
443 | * pwrdm_read_next_pwrst - get next powerdomain power state | |
444 | * @pwrdm: struct powerdomain * to get power state | |
445 | * | |
f0271d65 | 446 | * Return the powerdomain @pwrdm's next power state. Returns -EINVAL |
ad67ef68 PW |
447 | * if the powerdomain pointer is null or returns the next power state |
448 | * upon success. | |
449 | */ | |
450 | int pwrdm_read_next_pwrst(struct powerdomain *pwrdm) | |
451 | { | |
f327e07b RN |
452 | int ret = -EINVAL; |
453 | ||
ad67ef68 PW |
454 | if (!pwrdm) |
455 | return -EINVAL; | |
456 | ||
f327e07b RN |
457 | if (arch_pwrdm && arch_pwrdm->pwrdm_read_next_pwrst) |
458 | ret = arch_pwrdm->pwrdm_read_next_pwrst(pwrdm); | |
459 | ||
460 | return ret; | |
ad67ef68 PW |
461 | } |
462 | ||
463 | /** | |
464 | * pwrdm_read_pwrst - get current powerdomain power state | |
465 | * @pwrdm: struct powerdomain * to get power state | |
466 | * | |
f0271d65 | 467 | * Return the powerdomain @pwrdm's current power state. Returns -EINVAL |
ad67ef68 PW |
468 | * if the powerdomain pointer is null or returns the current power state |
469 | * upon success. | |
470 | */ | |
471 | int pwrdm_read_pwrst(struct powerdomain *pwrdm) | |
472 | { | |
f327e07b RN |
473 | int ret = -EINVAL; |
474 | ||
ad67ef68 PW |
475 | if (!pwrdm) |
476 | return -EINVAL; | |
477 | ||
f327e07b RN |
478 | if (arch_pwrdm && arch_pwrdm->pwrdm_read_pwrst) |
479 | ret = arch_pwrdm->pwrdm_read_pwrst(pwrdm); | |
480 | ||
481 | return ret; | |
ad67ef68 PW |
482 | } |
483 | ||
484 | /** | |
485 | * pwrdm_read_prev_pwrst - get previous powerdomain power state | |
486 | * @pwrdm: struct powerdomain * to get previous power state | |
487 | * | |
f0271d65 | 488 | * Return the powerdomain @pwrdm's previous power state. Returns -EINVAL |
ad67ef68 PW |
489 | * if the powerdomain pointer is null or returns the previous power state |
490 | * upon success. | |
491 | */ | |
492 | int pwrdm_read_prev_pwrst(struct powerdomain *pwrdm) | |
493 | { | |
f327e07b RN |
494 | int ret = -EINVAL; |
495 | ||
ad67ef68 PW |
496 | if (!pwrdm) |
497 | return -EINVAL; | |
498 | ||
f327e07b RN |
499 | if (arch_pwrdm && arch_pwrdm->pwrdm_read_prev_pwrst) |
500 | ret = arch_pwrdm->pwrdm_read_prev_pwrst(pwrdm); | |
501 | ||
502 | return ret; | |
ad67ef68 PW |
503 | } |
504 | ||
505 | /** | |
506 | * pwrdm_set_logic_retst - set powerdomain logic power state upon retention | |
507 | * @pwrdm: struct powerdomain * to set | |
508 | * @pwrst: one of the PWRDM_POWER_* macros | |
509 | * | |
f0271d65 PW |
510 | * Set the next power state @pwrst that the logic portion of the |
511 | * powerdomain @pwrdm will enter when the powerdomain enters retention. | |
512 | * This will be either RETENTION or OFF, if supported. Returns | |
513 | * -EINVAL if the powerdomain pointer is null or the target power | |
514 | * state is not not supported, or returns 0 upon success. | |
ad67ef68 PW |
515 | */ |
516 | int pwrdm_set_logic_retst(struct powerdomain *pwrdm, u8 pwrst) | |
517 | { | |
12627578 | 518 | int ret = -EINVAL; |
2bc4ef71 | 519 | |
ad67ef68 PW |
520 | if (!pwrdm) |
521 | return -EINVAL; | |
522 | ||
523 | if (!(pwrdm->pwrsts_logic_ret & (1 << pwrst))) | |
524 | return -EINVAL; | |
525 | ||
526 | pr_debug("powerdomain: setting next logic powerstate for %s to %0x\n", | |
527 | pwrdm->name, pwrst); | |
528 | ||
12627578 RN |
529 | if (arch_pwrdm && arch_pwrdm->pwrdm_set_logic_retst) |
530 | ret = arch_pwrdm->pwrdm_set_logic_retst(pwrdm, pwrst); | |
ad67ef68 | 531 | |
12627578 | 532 | return ret; |
ad67ef68 PW |
533 | } |
534 | ||
535 | /** | |
536 | * pwrdm_set_mem_onst - set memory power state while powerdomain ON | |
537 | * @pwrdm: struct powerdomain * to set | |
538 | * @bank: memory bank number to set (0-3) | |
539 | * @pwrst: one of the PWRDM_POWER_* macros | |
540 | * | |
f0271d65 PW |
541 | * Set the next power state @pwrst that memory bank @bank of the |
542 | * powerdomain @pwrdm will enter when the powerdomain enters the ON | |
543 | * state. @bank will be a number from 0 to 3, and represents different | |
544 | * types of memory, depending on the powerdomain. Returns -EINVAL if | |
545 | * the powerdomain pointer is null or the target power state is not | |
546 | * not supported for this memory bank, -EEXIST if the target memory | |
547 | * bank does not exist or is not controllable, or returns 0 upon | |
548 | * success. | |
ad67ef68 PW |
549 | */ |
550 | int pwrdm_set_mem_onst(struct powerdomain *pwrdm, u8 bank, u8 pwrst) | |
551 | { | |
9b7fc907 | 552 | int ret = -EINVAL; |
ad67ef68 PW |
553 | |
554 | if (!pwrdm) | |
555 | return -EINVAL; | |
556 | ||
557 | if (pwrdm->banks < (bank + 1)) | |
558 | return -EEXIST; | |
559 | ||
560 | if (!(pwrdm->pwrsts_mem_on[bank] & (1 << pwrst))) | |
561 | return -EINVAL; | |
562 | ||
563 | pr_debug("powerdomain: setting next memory powerstate for domain %s " | |
564 | "bank %0x while pwrdm-ON to %0x\n", pwrdm->name, bank, pwrst); | |
565 | ||
9b7fc907 RN |
566 | if (arch_pwrdm && arch_pwrdm->pwrdm_set_mem_onst) |
567 | ret = arch_pwrdm->pwrdm_set_mem_onst(pwrdm, bank, pwrst); | |
ad67ef68 | 568 | |
9b7fc907 | 569 | return ret; |
ad67ef68 PW |
570 | } |
571 | ||
572 | /** | |
573 | * pwrdm_set_mem_retst - set memory power state while powerdomain in RET | |
574 | * @pwrdm: struct powerdomain * to set | |
575 | * @bank: memory bank number to set (0-3) | |
576 | * @pwrst: one of the PWRDM_POWER_* macros | |
577 | * | |
f0271d65 PW |
578 | * Set the next power state @pwrst that memory bank @bank of the |
579 | * powerdomain @pwrdm will enter when the powerdomain enters the | |
580 | * RETENTION state. Bank will be a number from 0 to 3, and represents | |
581 | * different types of memory, depending on the powerdomain. @pwrst | |
582 | * will be either RETENTION or OFF, if supported. Returns -EINVAL if | |
583 | * the powerdomain pointer is null or the target power state is not | |
584 | * not supported for this memory bank, -EEXIST if the target memory | |
585 | * bank does not exist or is not controllable, or returns 0 upon | |
586 | * success. | |
ad67ef68 PW |
587 | */ |
588 | int pwrdm_set_mem_retst(struct powerdomain *pwrdm, u8 bank, u8 pwrst) | |
589 | { | |
9b7fc907 | 590 | int ret = -EINVAL; |
ad67ef68 PW |
591 | |
592 | if (!pwrdm) | |
593 | return -EINVAL; | |
594 | ||
595 | if (pwrdm->banks < (bank + 1)) | |
596 | return -EEXIST; | |
597 | ||
598 | if (!(pwrdm->pwrsts_mem_ret[bank] & (1 << pwrst))) | |
599 | return -EINVAL; | |
600 | ||
601 | pr_debug("powerdomain: setting next memory powerstate for domain %s " | |
602 | "bank %0x while pwrdm-RET to %0x\n", pwrdm->name, bank, pwrst); | |
603 | ||
9b7fc907 RN |
604 | if (arch_pwrdm && arch_pwrdm->pwrdm_set_mem_retst) |
605 | ret = arch_pwrdm->pwrdm_set_mem_retst(pwrdm, bank, pwrst); | |
ad67ef68 | 606 | |
9b7fc907 | 607 | return ret; |
ad67ef68 PW |
608 | } |
609 | ||
610 | /** | |
611 | * pwrdm_read_logic_pwrst - get current powerdomain logic retention power state | |
612 | * @pwrdm: struct powerdomain * to get current logic retention power state | |
613 | * | |
f0271d65 PW |
614 | * Return the power state that the logic portion of powerdomain @pwrdm |
615 | * will enter when the powerdomain enters retention. Returns -EINVAL | |
616 | * if the powerdomain pointer is null or returns the logic retention | |
617 | * power state upon success. | |
ad67ef68 PW |
618 | */ |
619 | int pwrdm_read_logic_pwrst(struct powerdomain *pwrdm) | |
620 | { | |
12627578 RN |
621 | int ret = -EINVAL; |
622 | ||
ad67ef68 PW |
623 | if (!pwrdm) |
624 | return -EINVAL; | |
625 | ||
12627578 RN |
626 | if (arch_pwrdm && arch_pwrdm->pwrdm_read_logic_pwrst) |
627 | ret = arch_pwrdm->pwrdm_read_logic_pwrst(pwrdm); | |
628 | ||
629 | return ret; | |
ad67ef68 PW |
630 | } |
631 | ||
632 | /** | |
633 | * pwrdm_read_prev_logic_pwrst - get previous powerdomain logic power state | |
634 | * @pwrdm: struct powerdomain * to get previous logic power state | |
635 | * | |
f0271d65 PW |
636 | * Return the powerdomain @pwrdm's previous logic power state. Returns |
637 | * -EINVAL if the powerdomain pointer is null or returns the previous | |
638 | * logic power state upon success. | |
ad67ef68 PW |
639 | */ |
640 | int pwrdm_read_prev_logic_pwrst(struct powerdomain *pwrdm) | |
641 | { | |
12627578 RN |
642 | int ret = -EINVAL; |
643 | ||
ad67ef68 PW |
644 | if (!pwrdm) |
645 | return -EINVAL; | |
646 | ||
12627578 RN |
647 | if (arch_pwrdm && arch_pwrdm->pwrdm_read_prev_logic_pwrst) |
648 | ret = arch_pwrdm->pwrdm_read_prev_logic_pwrst(pwrdm); | |
649 | ||
650 | return ret; | |
ad67ef68 PW |
651 | } |
652 | ||
1e3d0d2b TG |
653 | /** |
654 | * pwrdm_read_logic_retst - get next powerdomain logic power state | |
655 | * @pwrdm: struct powerdomain * to get next logic power state | |
656 | * | |
657 | * Return the powerdomain pwrdm's logic power state. Returns -EINVAL | |
658 | * if the powerdomain pointer is null or returns the next logic | |
659 | * power state upon success. | |
660 | */ | |
661 | int pwrdm_read_logic_retst(struct powerdomain *pwrdm) | |
662 | { | |
12627578 RN |
663 | int ret = -EINVAL; |
664 | ||
1e3d0d2b TG |
665 | if (!pwrdm) |
666 | return -EINVAL; | |
667 | ||
12627578 RN |
668 | if (arch_pwrdm && arch_pwrdm->pwrdm_read_logic_retst) |
669 | ret = arch_pwrdm->pwrdm_read_logic_retst(pwrdm); | |
670 | ||
671 | return ret; | |
1e3d0d2b TG |
672 | } |
673 | ||
ad67ef68 PW |
674 | /** |
675 | * pwrdm_read_mem_pwrst - get current memory bank power state | |
676 | * @pwrdm: struct powerdomain * to get current memory bank power state | |
677 | * @bank: memory bank number (0-3) | |
678 | * | |
f0271d65 PW |
679 | * Return the powerdomain @pwrdm's current memory power state for bank |
680 | * @bank. Returns -EINVAL if the powerdomain pointer is null, -EEXIST if | |
ad67ef68 PW |
681 | * the target memory bank does not exist or is not controllable, or |
682 | * returns the current memory power state upon success. | |
683 | */ | |
684 | int pwrdm_read_mem_pwrst(struct powerdomain *pwrdm, u8 bank) | |
685 | { | |
9b7fc907 | 686 | int ret = -EINVAL; |
ad67ef68 PW |
687 | |
688 | if (!pwrdm) | |
9b7fc907 | 689 | return ret; |
ad67ef68 PW |
690 | |
691 | if (pwrdm->banks < (bank + 1)) | |
9b7fc907 | 692 | return ret; |
ad67ef68 | 693 | |
3863c74b TG |
694 | if (pwrdm->flags & PWRDM_HAS_MPU_QUIRK) |
695 | bank = 1; | |
696 | ||
9b7fc907 RN |
697 | if (arch_pwrdm && arch_pwrdm->pwrdm_read_mem_pwrst) |
698 | ret = arch_pwrdm->pwrdm_read_mem_pwrst(pwrdm, bank); | |
ad67ef68 | 699 | |
9b7fc907 | 700 | return ret; |
ad67ef68 PW |
701 | } |
702 | ||
703 | /** | |
704 | * pwrdm_read_prev_mem_pwrst - get previous memory bank power state | |
705 | * @pwrdm: struct powerdomain * to get previous memory bank power state | |
706 | * @bank: memory bank number (0-3) | |
707 | * | |
f0271d65 PW |
708 | * Return the powerdomain @pwrdm's previous memory power state for |
709 | * bank @bank. Returns -EINVAL if the powerdomain pointer is null, | |
710 | * -EEXIST if the target memory bank does not exist or is not | |
711 | * controllable, or returns the previous memory power state upon | |
712 | * success. | |
ad67ef68 PW |
713 | */ |
714 | int pwrdm_read_prev_mem_pwrst(struct powerdomain *pwrdm, u8 bank) | |
715 | { | |
9b7fc907 | 716 | int ret = -EINVAL; |
ad67ef68 PW |
717 | |
718 | if (!pwrdm) | |
9b7fc907 | 719 | return ret; |
ad67ef68 PW |
720 | |
721 | if (pwrdm->banks < (bank + 1)) | |
9b7fc907 | 722 | return ret; |
ad67ef68 | 723 | |
3863c74b TG |
724 | if (pwrdm->flags & PWRDM_HAS_MPU_QUIRK) |
725 | bank = 1; | |
726 | ||
9b7fc907 RN |
727 | if (arch_pwrdm && arch_pwrdm->pwrdm_read_prev_mem_pwrst) |
728 | ret = arch_pwrdm->pwrdm_read_prev_mem_pwrst(pwrdm, bank); | |
ad67ef68 | 729 | |
9b7fc907 | 730 | return ret; |
ad67ef68 PW |
731 | } |
732 | ||
1e3d0d2b TG |
733 | /** |
734 | * pwrdm_read_mem_retst - get next memory bank power state | |
735 | * @pwrdm: struct powerdomain * to get mext memory bank power state | |
736 | * @bank: memory bank number (0-3) | |
737 | * | |
738 | * Return the powerdomain pwrdm's next memory power state for bank | |
739 | * x. Returns -EINVAL if the powerdomain pointer is null, -EEXIST if | |
740 | * the target memory bank does not exist or is not controllable, or | |
741 | * returns the next memory power state upon success. | |
742 | */ | |
743 | int pwrdm_read_mem_retst(struct powerdomain *pwrdm, u8 bank) | |
744 | { | |
9b7fc907 | 745 | int ret = -EINVAL; |
1e3d0d2b TG |
746 | |
747 | if (!pwrdm) | |
9b7fc907 | 748 | return ret; |
1e3d0d2b TG |
749 | |
750 | if (pwrdm->banks < (bank + 1)) | |
9b7fc907 | 751 | return ret; |
1e3d0d2b | 752 | |
9b7fc907 RN |
753 | if (arch_pwrdm && arch_pwrdm->pwrdm_read_mem_retst) |
754 | ret = arch_pwrdm->pwrdm_read_mem_retst(pwrdm, bank); | |
1e3d0d2b | 755 | |
9b7fc907 | 756 | return ret; |
1e3d0d2b TG |
757 | } |
758 | ||
ad67ef68 PW |
759 | /** |
760 | * pwrdm_clear_all_prev_pwrst - clear previous powerstate register for a pwrdm | |
761 | * @pwrdm: struct powerdomain * to clear | |
762 | * | |
f0271d65 PW |
763 | * Clear the powerdomain's previous power state register @pwrdm. |
764 | * Clears the entire register, including logic and memory bank | |
765 | * previous power states. Returns -EINVAL if the powerdomain pointer | |
766 | * is null, or returns 0 upon success. | |
ad67ef68 PW |
767 | */ |
768 | int pwrdm_clear_all_prev_pwrst(struct powerdomain *pwrdm) | |
769 | { | |
9b7fc907 RN |
770 | int ret = -EINVAL; |
771 | ||
ad67ef68 | 772 | if (!pwrdm) |
9b7fc907 | 773 | return ret; |
ad67ef68 PW |
774 | |
775 | /* | |
776 | * XXX should get the powerdomain's current state here; | |
777 | * warn & fail if it is not ON. | |
778 | */ | |
779 | ||
780 | pr_debug("powerdomain: clearing previous power state reg for %s\n", | |
781 | pwrdm->name); | |
782 | ||
9b7fc907 RN |
783 | if (arch_pwrdm && arch_pwrdm->pwrdm_clear_all_prev_pwrst) |
784 | ret = arch_pwrdm->pwrdm_clear_all_prev_pwrst(pwrdm); | |
ad67ef68 | 785 | |
9b7fc907 | 786 | return ret; |
ad67ef68 PW |
787 | } |
788 | ||
0b7cbfb5 PW |
789 | /** |
790 | * pwrdm_enable_hdwr_sar - enable automatic hardware SAR for a pwrdm | |
791 | * @pwrdm: struct powerdomain * | |
792 | * | |
793 | * Enable automatic context save-and-restore upon power state change | |
f0271d65 PW |
794 | * for some devices in the powerdomain @pwrdm. Warning: this only |
795 | * affects a subset of devices in a powerdomain; check the TRM | |
796 | * closely. Returns -EINVAL if the powerdomain pointer is null or if | |
797 | * the powerdomain does not support automatic save-and-restore, or | |
798 | * returns 0 upon success. | |
0b7cbfb5 PW |
799 | */ |
800 | int pwrdm_enable_hdwr_sar(struct powerdomain *pwrdm) | |
801 | { | |
9b7fc907 RN |
802 | int ret = -EINVAL; |
803 | ||
0b7cbfb5 | 804 | if (!pwrdm) |
9b7fc907 | 805 | return ret; |
0b7cbfb5 PW |
806 | |
807 | if (!(pwrdm->flags & PWRDM_HAS_HDWR_SAR)) | |
9b7fc907 | 808 | return ret; |
0b7cbfb5 PW |
809 | |
810 | pr_debug("powerdomain: %s: setting SAVEANDRESTORE bit\n", | |
811 | pwrdm->name); | |
812 | ||
9b7fc907 RN |
813 | if (arch_pwrdm && arch_pwrdm->pwrdm_enable_hdwr_sar) |
814 | ret = arch_pwrdm->pwrdm_enable_hdwr_sar(pwrdm); | |
0b7cbfb5 | 815 | |
9b7fc907 | 816 | return ret; |
0b7cbfb5 PW |
817 | } |
818 | ||
819 | /** | |
820 | * pwrdm_disable_hdwr_sar - disable automatic hardware SAR for a pwrdm | |
821 | * @pwrdm: struct powerdomain * | |
822 | * | |
823 | * Disable automatic context save-and-restore upon power state change | |
f0271d65 PW |
824 | * for some devices in the powerdomain @pwrdm. Warning: this only |
825 | * affects a subset of devices in a powerdomain; check the TRM | |
826 | * closely. Returns -EINVAL if the powerdomain pointer is null or if | |
827 | * the powerdomain does not support automatic save-and-restore, or | |
828 | * returns 0 upon success. | |
0b7cbfb5 PW |
829 | */ |
830 | int pwrdm_disable_hdwr_sar(struct powerdomain *pwrdm) | |
831 | { | |
9b7fc907 RN |
832 | int ret = -EINVAL; |
833 | ||
0b7cbfb5 | 834 | if (!pwrdm) |
9b7fc907 | 835 | return ret; |
0b7cbfb5 PW |
836 | |
837 | if (!(pwrdm->flags & PWRDM_HAS_HDWR_SAR)) | |
9b7fc907 | 838 | return ret; |
0b7cbfb5 PW |
839 | |
840 | pr_debug("powerdomain: %s: clearing SAVEANDRESTORE bit\n", | |
841 | pwrdm->name); | |
842 | ||
9b7fc907 RN |
843 | if (arch_pwrdm && arch_pwrdm->pwrdm_disable_hdwr_sar) |
844 | ret = arch_pwrdm->pwrdm_disable_hdwr_sar(pwrdm); | |
0b7cbfb5 | 845 | |
9b7fc907 | 846 | return ret; |
0b7cbfb5 PW |
847 | } |
848 | ||
849 | /** | |
850 | * pwrdm_has_hdwr_sar - test whether powerdomain supports hardware SAR | |
851 | * @pwrdm: struct powerdomain * | |
852 | * | |
f0271d65 | 853 | * Returns 1 if powerdomain @pwrdm supports hardware save-and-restore |
0b7cbfb5 PW |
854 | * for some devices, or 0 if it does not. |
855 | */ | |
856 | bool pwrdm_has_hdwr_sar(struct powerdomain *pwrdm) | |
857 | { | |
858 | return (pwrdm && pwrdm->flags & PWRDM_HAS_HDWR_SAR) ? 1 : 0; | |
859 | } | |
860 | ||
90dbc7b0 RN |
861 | /** |
862 | * pwrdm_set_lowpwrstchange - Request a low power state change | |
863 | * @pwrdm: struct powerdomain * | |
864 | * | |
865 | * Allows a powerdomain to transtion to a lower power sleep state | |
866 | * from an existing sleep state without waking up the powerdomain. | |
867 | * Returns -EINVAL if the powerdomain pointer is null or if the | |
868 | * powerdomain does not support LOWPOWERSTATECHANGE, or returns 0 | |
869 | * upon success. | |
870 | */ | |
871 | int pwrdm_set_lowpwrstchange(struct powerdomain *pwrdm) | |
872 | { | |
9b7fc907 RN |
873 | int ret = -EINVAL; |
874 | ||
90dbc7b0 RN |
875 | if (!pwrdm) |
876 | return -EINVAL; | |
877 | ||
878 | if (!(pwrdm->flags & PWRDM_HAS_LOWPOWERSTATECHANGE)) | |
879 | return -EINVAL; | |
880 | ||
881 | pr_debug("powerdomain: %s: setting LOWPOWERSTATECHANGE bit\n", | |
882 | pwrdm->name); | |
883 | ||
9b7fc907 RN |
884 | if (arch_pwrdm && arch_pwrdm->pwrdm_set_lowpwrstchange) |
885 | ret = arch_pwrdm->pwrdm_set_lowpwrstchange(pwrdm); | |
90dbc7b0 | 886 | |
9b7fc907 | 887 | return ret; |
90dbc7b0 RN |
888 | } |
889 | ||
ad67ef68 PW |
890 | /** |
891 | * pwrdm_wait_transition - wait for powerdomain power transition to finish | |
892 | * @pwrdm: struct powerdomain * to wait for | |
893 | * | |
f0271d65 | 894 | * If the powerdomain @pwrdm is in the process of a state transition, |
ad67ef68 PW |
895 | * spin until it completes the power transition, or until an iteration |
896 | * bailout value is reached. Returns -EINVAL if the powerdomain | |
897 | * pointer is null, -EAGAIN if the bailout value was reached, or | |
898 | * returns 0 upon success. | |
899 | */ | |
900 | int pwrdm_wait_transition(struct powerdomain *pwrdm) | |
901 | { | |
9b7fc907 | 902 | int ret = -EINVAL; |
ad67ef68 PW |
903 | |
904 | if (!pwrdm) | |
905 | return -EINVAL; | |
906 | ||
9b7fc907 RN |
907 | if (arch_pwrdm && arch_pwrdm->pwrdm_wait_transition) |
908 | ret = arch_pwrdm->pwrdm_wait_transition(pwrdm); | |
ad67ef68 | 909 | |
9b7fc907 | 910 | return ret; |
ad67ef68 PW |
911 | } |
912 | ||
ba20bb12 PDS |
913 | int pwrdm_state_switch(struct powerdomain *pwrdm) |
914 | { | |
915 | return _pwrdm_state_switch(pwrdm, PWRDM_STATE_NOW); | |
916 | } | |
917 | ||
918 | int pwrdm_clkdm_state_switch(struct clockdomain *clkdm) | |
919 | { | |
920 | if (clkdm != NULL && clkdm->pwrdm.ptr != NULL) { | |
921 | pwrdm_wait_transition(clkdm->pwrdm.ptr); | |
922 | return pwrdm_state_switch(clkdm->pwrdm.ptr); | |
923 | } | |
924 | ||
925 | return -EINVAL; | |
926 | } | |
ba20bb12 PDS |
927 | |
928 | int pwrdm_pre_transition(void) | |
929 | { | |
6199ab26 | 930 | pwrdm_for_each(_pwrdm_pre_transition_cb, NULL); |
ba20bb12 PDS |
931 | return 0; |
932 | } | |
933 | ||
934 | int pwrdm_post_transition(void) | |
935 | { | |
6199ab26 | 936 | pwrdm_for_each(_pwrdm_post_transition_cb, NULL); |
ba20bb12 PDS |
937 | return 0; |
938 | } | |
7f595674 KH |
939 | |
940 | /** | |
941 | * pwrdm_get_context_loss_count - get powerdomain's context loss count | |
942 | * @pwrdm: struct powerdomain * to wait for | |
943 | * | |
944 | * Context loss count is the sum of powerdomain off-mode counter, the | |
945 | * logic off counter and the per-bank memory off counter. Returns 0 | |
946 | * (and WARNs) upon error, otherwise, returns the context loss count. | |
947 | */ | |
948 | u32 pwrdm_get_context_loss_count(struct powerdomain *pwrdm) | |
949 | { | |
950 | int i, count; | |
951 | ||
952 | if (!pwrdm) { | |
953 | WARN(1, "powerdomain: %s: pwrdm is null\n", __func__); | |
954 | return 0; | |
955 | } | |
956 | ||
957 | count = pwrdm->state_counter[PWRDM_POWER_OFF]; | |
958 | count += pwrdm->ret_logic_off_counter; | |
959 | ||
960 | for (i = 0; i < pwrdm->banks; i++) | |
961 | count += pwrdm->ret_mem_off_counter[i]; | |
962 | ||
963 | pr_debug("powerdomain: %s: context loss count = %u\n", | |
964 | pwrdm->name, count); | |
965 | ||
966 | return count; | |
967 | } | |
694606c4 PW |
968 | |
969 | /** | |
970 | * pwrdm_can_ever_lose_context - can this powerdomain ever lose context? | |
971 | * @pwrdm: struct powerdomain * | |
972 | * | |
973 | * Given a struct powerdomain * @pwrdm, returns 1 if the powerdomain | |
974 | * can lose either memory or logic context or if @pwrdm is invalid, or | |
975 | * returns 0 otherwise. This function is not concerned with how the | |
976 | * powerdomain registers are programmed (i.e., to go off or not); it's | |
977 | * concerned with whether it's ever possible for this powerdomain to | |
978 | * go off while some other part of the chip is active. This function | |
979 | * assumes that every powerdomain can go to either ON or INACTIVE. | |
980 | */ | |
981 | bool pwrdm_can_ever_lose_context(struct powerdomain *pwrdm) | |
982 | { | |
983 | int i; | |
984 | ||
985 | if (IS_ERR_OR_NULL(pwrdm)) { | |
986 | pr_debug("powerdomain: %s: invalid powerdomain pointer\n", | |
987 | __func__); | |
988 | return 1; | |
989 | } | |
990 | ||
991 | if (pwrdm->pwrsts & PWRSTS_OFF) | |
992 | return 1; | |
993 | ||
994 | if (pwrdm->pwrsts & PWRSTS_RET) { | |
995 | if (pwrdm->pwrsts_logic_ret & PWRSTS_OFF) | |
996 | return 1; | |
997 | ||
998 | for (i = 0; i < pwrdm->banks; i++) | |
999 | if (pwrdm->pwrsts_mem_ret[i] & PWRSTS_OFF) | |
1000 | return 1; | |
1001 | } | |
1002 | ||
1003 | for (i = 0; i < pwrdm->banks; i++) | |
1004 | if (pwrdm->pwrsts_mem_on[i] & PWRSTS_OFF) | |
1005 | return 1; | |
1006 | ||
1007 | return 0; | |
1008 | } |