Commit | Line | Data |
---|---|---|
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 | |
f0271d65 | 198 | * @pwrdm_list: array of struct powerdomain pointers to register |
25985edc | 199 | * @custom_funcs: func pointers for arch specific implementations |
ad67ef68 | 200 | * |
f0271d65 PW |
201 | * Loop through the array of powerdomains @pwrdm_list, registering all |
202 | * that are available on the current CPU. If pwrdm_list is supplied | |
203 | * and not null, all of the referenced powerdomains will be | |
204 | * registered. No return value. XXX pwrdm_list is not really a | |
205 | * "list"; it is an array. Rename appropriately. | |
ad67ef68 | 206 | */ |
3b1e8b21 | 207 | void pwrdm_init(struct powerdomain **pwrdm_list, struct pwrdm_ops *custom_funcs) |
ad67ef68 PW |
208 | { |
209 | struct powerdomain **p = NULL; | |
210 | ||
3b1e8b21 RN |
211 | if (!custom_funcs) |
212 | WARN(1, "powerdomain: No custom pwrdm functions registered\n"); | |
213 | else | |
214 | arch_pwrdm = custom_funcs; | |
215 | ||
ba20bb12 | 216 | if (pwrdm_list) { |
e909d62a PW |
217 | for (p = pwrdm_list; *p; p++) |
218 | _pwrdm_register(*p); | |
ad67ef68 | 219 | } |
ad67ef68 PW |
220 | } |
221 | ||
222 | /** | |
223 | * pwrdm_lookup - look up a powerdomain by name, return a pointer | |
224 | * @name: name of powerdomain | |
225 | * | |
f0271d65 PW |
226 | * Find a registered powerdomain by its name @name. Returns a pointer |
227 | * to the struct powerdomain if found, or NULL otherwise. | |
ad67ef68 PW |
228 | */ |
229 | struct powerdomain *pwrdm_lookup(const char *name) | |
230 | { | |
231 | struct powerdomain *pwrdm; | |
ad67ef68 PW |
232 | |
233 | if (!name) | |
234 | return NULL; | |
235 | ||
ad67ef68 | 236 | pwrdm = _pwrdm_lookup(name); |
ad67ef68 PW |
237 | |
238 | return pwrdm; | |
239 | } | |
240 | ||
241 | /** | |
e909d62a | 242 | * pwrdm_for_each - call function on each registered clockdomain |
ad67ef68 PW |
243 | * @fn: callback function * |
244 | * | |
f0271d65 PW |
245 | * Call the supplied function @fn for each registered powerdomain. |
246 | * The callback function @fn can return anything but 0 to bail out | |
247 | * early from the iterator. Returns the last return value of the | |
248 | * callback function, which should be 0 for success or anything else | |
249 | * to indicate failure; or -EINVAL if the function pointer is null. | |
ad67ef68 | 250 | */ |
e909d62a PW |
251 | int pwrdm_for_each(int (*fn)(struct powerdomain *pwrdm, void *user), |
252 | void *user) | |
ad67ef68 PW |
253 | { |
254 | struct powerdomain *temp_pwrdm; | |
ad67ef68 PW |
255 | int ret = 0; |
256 | ||
257 | if (!fn) | |
258 | return -EINVAL; | |
259 | ||
ad67ef68 | 260 | list_for_each_entry(temp_pwrdm, &pwrdm_list, node) { |
6199ab26 | 261 | ret = (*fn)(temp_pwrdm, user); |
ad67ef68 PW |
262 | if (ret) |
263 | break; | |
264 | } | |
ee894b18 AB |
265 | |
266 | return ret; | |
267 | } | |
268 | ||
8420bb13 PW |
269 | /** |
270 | * pwrdm_add_clkdm - add a clockdomain to a powerdomain | |
271 | * @pwrdm: struct powerdomain * to add the clockdomain to | |
272 | * @clkdm: struct clockdomain * to associate with a powerdomain | |
273 | * | |
f0271d65 | 274 | * Associate the clockdomain @clkdm with a powerdomain @pwrdm. This |
8420bb13 PW |
275 | * enables the use of pwrdm_for_each_clkdm(). Returns -EINVAL if |
276 | * presented with invalid pointers; -ENOMEM if memory could not be allocated; | |
277 | * or 0 upon success. | |
278 | */ | |
279 | int pwrdm_add_clkdm(struct powerdomain *pwrdm, struct clockdomain *clkdm) | |
280 | { | |
8420bb13 PW |
281 | int i; |
282 | int ret = -EINVAL; | |
283 | ||
284 | if (!pwrdm || !clkdm) | |
285 | return -EINVAL; | |
286 | ||
287 | pr_debug("powerdomain: associating clockdomain %s with powerdomain " | |
288 | "%s\n", clkdm->name, pwrdm->name); | |
289 | ||
8420bb13 PW |
290 | for (i = 0; i < PWRDM_MAX_CLKDMS; i++) { |
291 | if (!pwrdm->pwrdm_clkdms[i]) | |
292 | break; | |
293 | #ifdef DEBUG | |
294 | if (pwrdm->pwrdm_clkdms[i] == clkdm) { | |
295 | ret = -EINVAL; | |
296 | goto pac_exit; | |
297 | } | |
298 | #endif | |
299 | } | |
300 | ||
301 | if (i == PWRDM_MAX_CLKDMS) { | |
302 | pr_debug("powerdomain: increase PWRDM_MAX_CLKDMS for " | |
303 | "pwrdm %s clkdm %s\n", pwrdm->name, clkdm->name); | |
304 | WARN_ON(1); | |
305 | ret = -ENOMEM; | |
306 | goto pac_exit; | |
307 | } | |
308 | ||
309 | pwrdm->pwrdm_clkdms[i] = clkdm; | |
310 | ||
311 | ret = 0; | |
312 | ||
313 | pac_exit: | |
8420bb13 PW |
314 | return ret; |
315 | } | |
316 | ||
317 | /** | |
318 | * pwrdm_del_clkdm - remove a clockdomain from a powerdomain | |
319 | * @pwrdm: struct powerdomain * to add the clockdomain to | |
320 | * @clkdm: struct clockdomain * to associate with a powerdomain | |
321 | * | |
f0271d65 PW |
322 | * Dissociate the clockdomain @clkdm from the powerdomain |
323 | * @pwrdm. Returns -EINVAL if presented with invalid pointers; -ENOENT | |
324 | * if @clkdm was not associated with the powerdomain, or 0 upon | |
325 | * success. | |
8420bb13 PW |
326 | */ |
327 | int pwrdm_del_clkdm(struct powerdomain *pwrdm, struct clockdomain *clkdm) | |
328 | { | |
8420bb13 PW |
329 | int ret = -EINVAL; |
330 | int i; | |
331 | ||
332 | if (!pwrdm || !clkdm) | |
333 | return -EINVAL; | |
334 | ||
335 | pr_debug("powerdomain: dissociating clockdomain %s from powerdomain " | |
336 | "%s\n", clkdm->name, pwrdm->name); | |
337 | ||
8420bb13 PW |
338 | for (i = 0; i < PWRDM_MAX_CLKDMS; i++) |
339 | if (pwrdm->pwrdm_clkdms[i] == clkdm) | |
340 | break; | |
341 | ||
342 | if (i == PWRDM_MAX_CLKDMS) { | |
343 | pr_debug("powerdomain: clkdm %s not associated with pwrdm " | |
344 | "%s ?!\n", clkdm->name, pwrdm->name); | |
345 | ret = -ENOENT; | |
346 | goto pdc_exit; | |
347 | } | |
348 | ||
349 | pwrdm->pwrdm_clkdms[i] = NULL; | |
350 | ||
351 | ret = 0; | |
352 | ||
353 | pdc_exit: | |
8420bb13 PW |
354 | return ret; |
355 | } | |
356 | ||
357 | /** | |
358 | * pwrdm_for_each_clkdm - call function on each clkdm in a pwrdm | |
359 | * @pwrdm: struct powerdomain * to iterate over | |
360 | * @fn: callback function * | |
361 | * | |
f0271d65 PW |
362 | * Call the supplied function @fn for each clockdomain in the powerdomain |
363 | * @pwrdm. The callback function can return anything but 0 to bail | |
e909d62a PW |
364 | * out early from the iterator. Returns -EINVAL if presented with |
365 | * invalid pointers; or passes along the last return value of the | |
366 | * callback function, which should be 0 for success or anything else | |
367 | * to indicate failure. | |
8420bb13 PW |
368 | */ |
369 | int pwrdm_for_each_clkdm(struct powerdomain *pwrdm, | |
370 | int (*fn)(struct powerdomain *pwrdm, | |
371 | struct clockdomain *clkdm)) | |
372 | { | |
8420bb13 PW |
373 | int ret = 0; |
374 | int i; | |
375 | ||
376 | if (!fn) | |
377 | return -EINVAL; | |
378 | ||
8420bb13 PW |
379 | for (i = 0; i < PWRDM_MAX_CLKDMS && !ret; i++) |
380 | ret = (*fn)(pwrdm, pwrdm->pwrdm_clkdms[i]); | |
381 | ||
8420bb13 PW |
382 | return ret; |
383 | } | |
384 | ||
ad67ef68 PW |
385 | /** |
386 | * pwrdm_get_mem_bank_count - get number of memory banks in this powerdomain | |
387 | * @pwrdm: struct powerdomain * | |
388 | * | |
f0271d65 | 389 | * Return the number of controllable memory banks in powerdomain @pwrdm, |
ad67ef68 PW |
390 | * starting with 1. Returns -EINVAL if the powerdomain pointer is null. |
391 | */ | |
392 | int pwrdm_get_mem_bank_count(struct powerdomain *pwrdm) | |
393 | { | |
394 | if (!pwrdm) | |
395 | return -EINVAL; | |
396 | ||
397 | return pwrdm->banks; | |
398 | } | |
399 | ||
400 | /** | |
401 | * pwrdm_set_next_pwrst - set next powerdomain power state | |
402 | * @pwrdm: struct powerdomain * to set | |
403 | * @pwrst: one of the PWRDM_POWER_* macros | |
404 | * | |
f0271d65 | 405 | * Set the powerdomain @pwrdm's next power state to @pwrst. The powerdomain |
ad67ef68 PW |
406 | * may not enter this state immediately if the preconditions for this state |
407 | * have not been satisfied. Returns -EINVAL if the powerdomain pointer is | |
408 | * null or if the power state is invalid for the powerdomin, or returns 0 | |
409 | * upon success. | |
410 | */ | |
411 | int pwrdm_set_next_pwrst(struct powerdomain *pwrdm, u8 pwrst) | |
412 | { | |
f327e07b RN |
413 | int ret = -EINVAL; |
414 | ||
ad67ef68 PW |
415 | if (!pwrdm) |
416 | return -EINVAL; | |
417 | ||
418 | if (!(pwrdm->pwrsts & (1 << pwrst))) | |
419 | return -EINVAL; | |
420 | ||
421 | pr_debug("powerdomain: setting next powerstate for %s to %0x\n", | |
422 | pwrdm->name, pwrst); | |
423 | ||
5e7c58dc JP |
424 | if (arch_pwrdm && arch_pwrdm->pwrdm_set_next_pwrst) { |
425 | /* Trace the pwrdm desired target state */ | |
426 | trace_power_domain_target(pwrdm->name, pwrst, | |
427 | smp_processor_id()); | |
428 | /* Program the pwrdm desired target state */ | |
f327e07b | 429 | ret = arch_pwrdm->pwrdm_set_next_pwrst(pwrdm, pwrst); |
5e7c58dc | 430 | } |
ad67ef68 | 431 | |
f327e07b | 432 | return ret; |
ad67ef68 PW |
433 | } |
434 | ||
435 | /** | |
436 | * pwrdm_read_next_pwrst - get next powerdomain power state | |
437 | * @pwrdm: struct powerdomain * to get power state | |
438 | * | |
f0271d65 | 439 | * Return the powerdomain @pwrdm's next power state. Returns -EINVAL |
ad67ef68 PW |
440 | * if the powerdomain pointer is null or returns the next power state |
441 | * upon success. | |
442 | */ | |
443 | int pwrdm_read_next_pwrst(struct powerdomain *pwrdm) | |
444 | { | |
f327e07b RN |
445 | int ret = -EINVAL; |
446 | ||
ad67ef68 PW |
447 | if (!pwrdm) |
448 | return -EINVAL; | |
449 | ||
f327e07b RN |
450 | if (arch_pwrdm && arch_pwrdm->pwrdm_read_next_pwrst) |
451 | ret = arch_pwrdm->pwrdm_read_next_pwrst(pwrdm); | |
452 | ||
453 | return ret; | |
ad67ef68 PW |
454 | } |
455 | ||
456 | /** | |
457 | * pwrdm_read_pwrst - get current powerdomain power state | |
458 | * @pwrdm: struct powerdomain * to get power state | |
459 | * | |
f0271d65 | 460 | * Return the powerdomain @pwrdm's current power state. Returns -EINVAL |
ad67ef68 PW |
461 | * if the powerdomain pointer is null or returns the current power state |
462 | * upon success. | |
463 | */ | |
464 | int pwrdm_read_pwrst(struct powerdomain *pwrdm) | |
465 | { | |
f327e07b RN |
466 | int ret = -EINVAL; |
467 | ||
ad67ef68 PW |
468 | if (!pwrdm) |
469 | return -EINVAL; | |
470 | ||
f327e07b RN |
471 | if (arch_pwrdm && arch_pwrdm->pwrdm_read_pwrst) |
472 | ret = arch_pwrdm->pwrdm_read_pwrst(pwrdm); | |
473 | ||
474 | return ret; | |
ad67ef68 PW |
475 | } |
476 | ||
477 | /** | |
478 | * pwrdm_read_prev_pwrst - get previous powerdomain power state | |
479 | * @pwrdm: struct powerdomain * to get previous power state | |
480 | * | |
f0271d65 | 481 | * Return the powerdomain @pwrdm's previous power state. Returns -EINVAL |
ad67ef68 PW |
482 | * if the powerdomain pointer is null or returns the previous power state |
483 | * upon success. | |
484 | */ | |
485 | int pwrdm_read_prev_pwrst(struct powerdomain *pwrdm) | |
486 | { | |
f327e07b RN |
487 | int ret = -EINVAL; |
488 | ||
ad67ef68 PW |
489 | if (!pwrdm) |
490 | return -EINVAL; | |
491 | ||
f327e07b RN |
492 | if (arch_pwrdm && arch_pwrdm->pwrdm_read_prev_pwrst) |
493 | ret = arch_pwrdm->pwrdm_read_prev_pwrst(pwrdm); | |
494 | ||
495 | return ret; | |
ad67ef68 PW |
496 | } |
497 | ||
498 | /** | |
499 | * pwrdm_set_logic_retst - set powerdomain logic power state upon retention | |
500 | * @pwrdm: struct powerdomain * to set | |
501 | * @pwrst: one of the PWRDM_POWER_* macros | |
502 | * | |
f0271d65 PW |
503 | * Set the next power state @pwrst that the logic portion of the |
504 | * powerdomain @pwrdm will enter when the powerdomain enters retention. | |
505 | * This will be either RETENTION or OFF, if supported. Returns | |
506 | * -EINVAL if the powerdomain pointer is null or the target power | |
507 | * state is not not supported, or returns 0 upon success. | |
ad67ef68 PW |
508 | */ |
509 | int pwrdm_set_logic_retst(struct powerdomain *pwrdm, u8 pwrst) | |
510 | { | |
12627578 | 511 | int ret = -EINVAL; |
2bc4ef71 | 512 | |
ad67ef68 PW |
513 | if (!pwrdm) |
514 | return -EINVAL; | |
515 | ||
516 | if (!(pwrdm->pwrsts_logic_ret & (1 << pwrst))) | |
517 | return -EINVAL; | |
518 | ||
519 | pr_debug("powerdomain: setting next logic powerstate for %s to %0x\n", | |
520 | pwrdm->name, pwrst); | |
521 | ||
12627578 RN |
522 | if (arch_pwrdm && arch_pwrdm->pwrdm_set_logic_retst) |
523 | ret = arch_pwrdm->pwrdm_set_logic_retst(pwrdm, pwrst); | |
ad67ef68 | 524 | |
12627578 | 525 | return ret; |
ad67ef68 PW |
526 | } |
527 | ||
528 | /** | |
529 | * pwrdm_set_mem_onst - set memory power state while powerdomain ON | |
530 | * @pwrdm: struct powerdomain * to set | |
531 | * @bank: memory bank number to set (0-3) | |
532 | * @pwrst: one of the PWRDM_POWER_* macros | |
533 | * | |
f0271d65 PW |
534 | * Set the next power state @pwrst that memory bank @bank of the |
535 | * powerdomain @pwrdm will enter when the powerdomain enters the ON | |
536 | * state. @bank will be a number from 0 to 3, and represents different | |
537 | * types of memory, depending on the powerdomain. Returns -EINVAL if | |
538 | * the powerdomain pointer is null or the target power state is not | |
539 | * not supported for this memory bank, -EEXIST if the target memory | |
540 | * bank does not exist or is not controllable, or returns 0 upon | |
541 | * success. | |
ad67ef68 PW |
542 | */ |
543 | int pwrdm_set_mem_onst(struct powerdomain *pwrdm, u8 bank, u8 pwrst) | |
544 | { | |
9b7fc907 | 545 | int ret = -EINVAL; |
ad67ef68 PW |
546 | |
547 | if (!pwrdm) | |
548 | return -EINVAL; | |
549 | ||
550 | if (pwrdm->banks < (bank + 1)) | |
551 | return -EEXIST; | |
552 | ||
553 | if (!(pwrdm->pwrsts_mem_on[bank] & (1 << pwrst))) | |
554 | return -EINVAL; | |
555 | ||
556 | pr_debug("powerdomain: setting next memory powerstate for domain %s " | |
557 | "bank %0x while pwrdm-ON to %0x\n", pwrdm->name, bank, pwrst); | |
558 | ||
9b7fc907 RN |
559 | if (arch_pwrdm && arch_pwrdm->pwrdm_set_mem_onst) |
560 | ret = arch_pwrdm->pwrdm_set_mem_onst(pwrdm, bank, pwrst); | |
ad67ef68 | 561 | |
9b7fc907 | 562 | return ret; |
ad67ef68 PW |
563 | } |
564 | ||
565 | /** | |
566 | * pwrdm_set_mem_retst - set memory power state while powerdomain in RET | |
567 | * @pwrdm: struct powerdomain * to set | |
568 | * @bank: memory bank number to set (0-3) | |
569 | * @pwrst: one of the PWRDM_POWER_* macros | |
570 | * | |
f0271d65 PW |
571 | * Set the next power state @pwrst that memory bank @bank of the |
572 | * powerdomain @pwrdm will enter when the powerdomain enters the | |
573 | * RETENTION state. Bank will be a number from 0 to 3, and represents | |
574 | * different types of memory, depending on the powerdomain. @pwrst | |
575 | * will be either RETENTION or OFF, if supported. Returns -EINVAL if | |
576 | * the powerdomain pointer is null or the target power state is not | |
577 | * not supported for this memory bank, -EEXIST if the target memory | |
578 | * bank does not exist or is not controllable, or returns 0 upon | |
579 | * success. | |
ad67ef68 PW |
580 | */ |
581 | int pwrdm_set_mem_retst(struct powerdomain *pwrdm, u8 bank, u8 pwrst) | |
582 | { | |
9b7fc907 | 583 | int ret = -EINVAL; |
ad67ef68 PW |
584 | |
585 | if (!pwrdm) | |
586 | return -EINVAL; | |
587 | ||
588 | if (pwrdm->banks < (bank + 1)) | |
589 | return -EEXIST; | |
590 | ||
591 | if (!(pwrdm->pwrsts_mem_ret[bank] & (1 << pwrst))) | |
592 | return -EINVAL; | |
593 | ||
594 | pr_debug("powerdomain: setting next memory powerstate for domain %s " | |
595 | "bank %0x while pwrdm-RET to %0x\n", pwrdm->name, bank, pwrst); | |
596 | ||
9b7fc907 RN |
597 | if (arch_pwrdm && arch_pwrdm->pwrdm_set_mem_retst) |
598 | ret = arch_pwrdm->pwrdm_set_mem_retst(pwrdm, bank, pwrst); | |
ad67ef68 | 599 | |
9b7fc907 | 600 | return ret; |
ad67ef68 PW |
601 | } |
602 | ||
603 | /** | |
604 | * pwrdm_read_logic_pwrst - get current powerdomain logic retention power state | |
605 | * @pwrdm: struct powerdomain * to get current logic retention power state | |
606 | * | |
f0271d65 PW |
607 | * Return the power state that the logic portion of powerdomain @pwrdm |
608 | * will enter when the powerdomain enters retention. Returns -EINVAL | |
609 | * if the powerdomain pointer is null or returns the logic retention | |
610 | * power state upon success. | |
ad67ef68 PW |
611 | */ |
612 | int pwrdm_read_logic_pwrst(struct powerdomain *pwrdm) | |
613 | { | |
12627578 RN |
614 | int ret = -EINVAL; |
615 | ||
ad67ef68 PW |
616 | if (!pwrdm) |
617 | return -EINVAL; | |
618 | ||
12627578 RN |
619 | if (arch_pwrdm && arch_pwrdm->pwrdm_read_logic_pwrst) |
620 | ret = arch_pwrdm->pwrdm_read_logic_pwrst(pwrdm); | |
621 | ||
622 | return ret; | |
ad67ef68 PW |
623 | } |
624 | ||
625 | /** | |
626 | * pwrdm_read_prev_logic_pwrst - get previous powerdomain logic power state | |
627 | * @pwrdm: struct powerdomain * to get previous logic power state | |
628 | * | |
f0271d65 PW |
629 | * Return the powerdomain @pwrdm's previous logic power state. Returns |
630 | * -EINVAL if the powerdomain pointer is null or returns the previous | |
631 | * logic power state upon success. | |
ad67ef68 PW |
632 | */ |
633 | int pwrdm_read_prev_logic_pwrst(struct powerdomain *pwrdm) | |
634 | { | |
12627578 RN |
635 | int ret = -EINVAL; |
636 | ||
ad67ef68 PW |
637 | if (!pwrdm) |
638 | return -EINVAL; | |
639 | ||
12627578 RN |
640 | if (arch_pwrdm && arch_pwrdm->pwrdm_read_prev_logic_pwrst) |
641 | ret = arch_pwrdm->pwrdm_read_prev_logic_pwrst(pwrdm); | |
642 | ||
643 | return ret; | |
ad67ef68 PW |
644 | } |
645 | ||
1e3d0d2b TG |
646 | /** |
647 | * pwrdm_read_logic_retst - get next powerdomain logic power state | |
648 | * @pwrdm: struct powerdomain * to get next logic power state | |
649 | * | |
650 | * Return the powerdomain pwrdm's logic power state. Returns -EINVAL | |
651 | * if the powerdomain pointer is null or returns the next logic | |
652 | * power state upon success. | |
653 | */ | |
654 | int pwrdm_read_logic_retst(struct powerdomain *pwrdm) | |
655 | { | |
12627578 RN |
656 | int ret = -EINVAL; |
657 | ||
1e3d0d2b TG |
658 | if (!pwrdm) |
659 | return -EINVAL; | |
660 | ||
12627578 RN |
661 | if (arch_pwrdm && arch_pwrdm->pwrdm_read_logic_retst) |
662 | ret = arch_pwrdm->pwrdm_read_logic_retst(pwrdm); | |
663 | ||
664 | return ret; | |
1e3d0d2b TG |
665 | } |
666 | ||
ad67ef68 PW |
667 | /** |
668 | * pwrdm_read_mem_pwrst - get current memory bank power state | |
669 | * @pwrdm: struct powerdomain * to get current memory bank power state | |
670 | * @bank: memory bank number (0-3) | |
671 | * | |
f0271d65 PW |
672 | * Return the powerdomain @pwrdm's current memory power state for bank |
673 | * @bank. Returns -EINVAL if the powerdomain pointer is null, -EEXIST if | |
ad67ef68 PW |
674 | * the target memory bank does not exist or is not controllable, or |
675 | * returns the current memory power state upon success. | |
676 | */ | |
677 | int pwrdm_read_mem_pwrst(struct powerdomain *pwrdm, u8 bank) | |
678 | { | |
9b7fc907 | 679 | int ret = -EINVAL; |
ad67ef68 PW |
680 | |
681 | if (!pwrdm) | |
9b7fc907 | 682 | return ret; |
ad67ef68 PW |
683 | |
684 | if (pwrdm->banks < (bank + 1)) | |
9b7fc907 | 685 | return ret; |
ad67ef68 | 686 | |
3863c74b TG |
687 | if (pwrdm->flags & PWRDM_HAS_MPU_QUIRK) |
688 | bank = 1; | |
689 | ||
9b7fc907 RN |
690 | if (arch_pwrdm && arch_pwrdm->pwrdm_read_mem_pwrst) |
691 | ret = arch_pwrdm->pwrdm_read_mem_pwrst(pwrdm, bank); | |
ad67ef68 | 692 | |
9b7fc907 | 693 | return ret; |
ad67ef68 PW |
694 | } |
695 | ||
696 | /** | |
697 | * pwrdm_read_prev_mem_pwrst - get previous memory bank power state | |
698 | * @pwrdm: struct powerdomain * to get previous memory bank power state | |
699 | * @bank: memory bank number (0-3) | |
700 | * | |
f0271d65 PW |
701 | * Return the powerdomain @pwrdm's previous memory power state for |
702 | * bank @bank. Returns -EINVAL if the powerdomain pointer is null, | |
703 | * -EEXIST if the target memory bank does not exist or is not | |
704 | * controllable, or returns the previous memory power state upon | |
705 | * success. | |
ad67ef68 PW |
706 | */ |
707 | int pwrdm_read_prev_mem_pwrst(struct powerdomain *pwrdm, u8 bank) | |
708 | { | |
9b7fc907 | 709 | int ret = -EINVAL; |
ad67ef68 PW |
710 | |
711 | if (!pwrdm) | |
9b7fc907 | 712 | return ret; |
ad67ef68 PW |
713 | |
714 | if (pwrdm->banks < (bank + 1)) | |
9b7fc907 | 715 | return ret; |
ad67ef68 | 716 | |
3863c74b TG |
717 | if (pwrdm->flags & PWRDM_HAS_MPU_QUIRK) |
718 | bank = 1; | |
719 | ||
9b7fc907 RN |
720 | if (arch_pwrdm && arch_pwrdm->pwrdm_read_prev_mem_pwrst) |
721 | ret = arch_pwrdm->pwrdm_read_prev_mem_pwrst(pwrdm, bank); | |
ad67ef68 | 722 | |
9b7fc907 | 723 | return ret; |
ad67ef68 PW |
724 | } |
725 | ||
1e3d0d2b TG |
726 | /** |
727 | * pwrdm_read_mem_retst - get next memory bank power state | |
728 | * @pwrdm: struct powerdomain * to get mext memory bank power state | |
729 | * @bank: memory bank number (0-3) | |
730 | * | |
731 | * Return the powerdomain pwrdm's next memory power state for bank | |
732 | * x. Returns -EINVAL if the powerdomain pointer is null, -EEXIST if | |
733 | * the target memory bank does not exist or is not controllable, or | |
734 | * returns the next memory power state upon success. | |
735 | */ | |
736 | int pwrdm_read_mem_retst(struct powerdomain *pwrdm, u8 bank) | |
737 | { | |
9b7fc907 | 738 | int ret = -EINVAL; |
1e3d0d2b TG |
739 | |
740 | if (!pwrdm) | |
9b7fc907 | 741 | return ret; |
1e3d0d2b TG |
742 | |
743 | if (pwrdm->banks < (bank + 1)) | |
9b7fc907 | 744 | return ret; |
1e3d0d2b | 745 | |
9b7fc907 RN |
746 | if (arch_pwrdm && arch_pwrdm->pwrdm_read_mem_retst) |
747 | ret = arch_pwrdm->pwrdm_read_mem_retst(pwrdm, bank); | |
1e3d0d2b | 748 | |
9b7fc907 | 749 | return ret; |
1e3d0d2b TG |
750 | } |
751 | ||
ad67ef68 PW |
752 | /** |
753 | * pwrdm_clear_all_prev_pwrst - clear previous powerstate register for a pwrdm | |
754 | * @pwrdm: struct powerdomain * to clear | |
755 | * | |
f0271d65 PW |
756 | * Clear the powerdomain's previous power state register @pwrdm. |
757 | * Clears the entire register, including logic and memory bank | |
758 | * previous power states. Returns -EINVAL if the powerdomain pointer | |
759 | * is null, or returns 0 upon success. | |
ad67ef68 PW |
760 | */ |
761 | int pwrdm_clear_all_prev_pwrst(struct powerdomain *pwrdm) | |
762 | { | |
9b7fc907 RN |
763 | int ret = -EINVAL; |
764 | ||
ad67ef68 | 765 | if (!pwrdm) |
9b7fc907 | 766 | return ret; |
ad67ef68 PW |
767 | |
768 | /* | |
769 | * XXX should get the powerdomain's current state here; | |
770 | * warn & fail if it is not ON. | |
771 | */ | |
772 | ||
773 | pr_debug("powerdomain: clearing previous power state reg for %s\n", | |
774 | pwrdm->name); | |
775 | ||
9b7fc907 RN |
776 | if (arch_pwrdm && arch_pwrdm->pwrdm_clear_all_prev_pwrst) |
777 | ret = arch_pwrdm->pwrdm_clear_all_prev_pwrst(pwrdm); | |
ad67ef68 | 778 | |
9b7fc907 | 779 | return ret; |
ad67ef68 PW |
780 | } |
781 | ||
0b7cbfb5 PW |
782 | /** |
783 | * pwrdm_enable_hdwr_sar - enable automatic hardware SAR for a pwrdm | |
784 | * @pwrdm: struct powerdomain * | |
785 | * | |
786 | * Enable automatic context save-and-restore upon power state change | |
f0271d65 PW |
787 | * for some devices in the powerdomain @pwrdm. Warning: this only |
788 | * affects a subset of devices in a powerdomain; check the TRM | |
789 | * closely. Returns -EINVAL if the powerdomain pointer is null or if | |
790 | * the powerdomain does not support automatic save-and-restore, or | |
791 | * returns 0 upon success. | |
0b7cbfb5 PW |
792 | */ |
793 | int pwrdm_enable_hdwr_sar(struct powerdomain *pwrdm) | |
794 | { | |
9b7fc907 RN |
795 | int ret = -EINVAL; |
796 | ||
0b7cbfb5 | 797 | if (!pwrdm) |
9b7fc907 | 798 | return ret; |
0b7cbfb5 PW |
799 | |
800 | if (!(pwrdm->flags & PWRDM_HAS_HDWR_SAR)) | |
9b7fc907 | 801 | return ret; |
0b7cbfb5 PW |
802 | |
803 | pr_debug("powerdomain: %s: setting SAVEANDRESTORE bit\n", | |
804 | pwrdm->name); | |
805 | ||
9b7fc907 RN |
806 | if (arch_pwrdm && arch_pwrdm->pwrdm_enable_hdwr_sar) |
807 | ret = arch_pwrdm->pwrdm_enable_hdwr_sar(pwrdm); | |
0b7cbfb5 | 808 | |
9b7fc907 | 809 | return ret; |
0b7cbfb5 PW |
810 | } |
811 | ||
812 | /** | |
813 | * pwrdm_disable_hdwr_sar - disable automatic hardware SAR for a pwrdm | |
814 | * @pwrdm: struct powerdomain * | |
815 | * | |
816 | * Disable automatic context save-and-restore upon power state change | |
f0271d65 PW |
817 | * for some devices in the powerdomain @pwrdm. Warning: this only |
818 | * affects a subset of devices in a powerdomain; check the TRM | |
819 | * closely. Returns -EINVAL if the powerdomain pointer is null or if | |
820 | * the powerdomain does not support automatic save-and-restore, or | |
821 | * returns 0 upon success. | |
0b7cbfb5 PW |
822 | */ |
823 | int pwrdm_disable_hdwr_sar(struct powerdomain *pwrdm) | |
824 | { | |
9b7fc907 RN |
825 | int ret = -EINVAL; |
826 | ||
0b7cbfb5 | 827 | if (!pwrdm) |
9b7fc907 | 828 | return ret; |
0b7cbfb5 PW |
829 | |
830 | if (!(pwrdm->flags & PWRDM_HAS_HDWR_SAR)) | |
9b7fc907 | 831 | return ret; |
0b7cbfb5 PW |
832 | |
833 | pr_debug("powerdomain: %s: clearing SAVEANDRESTORE bit\n", | |
834 | pwrdm->name); | |
835 | ||
9b7fc907 RN |
836 | if (arch_pwrdm && arch_pwrdm->pwrdm_disable_hdwr_sar) |
837 | ret = arch_pwrdm->pwrdm_disable_hdwr_sar(pwrdm); | |
0b7cbfb5 | 838 | |
9b7fc907 | 839 | return ret; |
0b7cbfb5 PW |
840 | } |
841 | ||
842 | /** | |
843 | * pwrdm_has_hdwr_sar - test whether powerdomain supports hardware SAR | |
844 | * @pwrdm: struct powerdomain * | |
845 | * | |
f0271d65 | 846 | * Returns 1 if powerdomain @pwrdm supports hardware save-and-restore |
0b7cbfb5 PW |
847 | * for some devices, or 0 if it does not. |
848 | */ | |
849 | bool pwrdm_has_hdwr_sar(struct powerdomain *pwrdm) | |
850 | { | |
851 | return (pwrdm && pwrdm->flags & PWRDM_HAS_HDWR_SAR) ? 1 : 0; | |
852 | } | |
853 | ||
90dbc7b0 RN |
854 | /** |
855 | * pwrdm_set_lowpwrstchange - Request a low power state change | |
856 | * @pwrdm: struct powerdomain * | |
857 | * | |
858 | * Allows a powerdomain to transtion to a lower power sleep state | |
859 | * from an existing sleep state without waking up the powerdomain. | |
860 | * Returns -EINVAL if the powerdomain pointer is null or if the | |
861 | * powerdomain does not support LOWPOWERSTATECHANGE, or returns 0 | |
862 | * upon success. | |
863 | */ | |
864 | int pwrdm_set_lowpwrstchange(struct powerdomain *pwrdm) | |
865 | { | |
9b7fc907 RN |
866 | int ret = -EINVAL; |
867 | ||
90dbc7b0 RN |
868 | if (!pwrdm) |
869 | return -EINVAL; | |
870 | ||
871 | if (!(pwrdm->flags & PWRDM_HAS_LOWPOWERSTATECHANGE)) | |
872 | return -EINVAL; | |
873 | ||
874 | pr_debug("powerdomain: %s: setting LOWPOWERSTATECHANGE bit\n", | |
875 | pwrdm->name); | |
876 | ||
9b7fc907 RN |
877 | if (arch_pwrdm && arch_pwrdm->pwrdm_set_lowpwrstchange) |
878 | ret = arch_pwrdm->pwrdm_set_lowpwrstchange(pwrdm); | |
90dbc7b0 | 879 | |
9b7fc907 | 880 | return ret; |
90dbc7b0 RN |
881 | } |
882 | ||
ad67ef68 PW |
883 | /** |
884 | * pwrdm_wait_transition - wait for powerdomain power transition to finish | |
885 | * @pwrdm: struct powerdomain * to wait for | |
886 | * | |
f0271d65 | 887 | * If the powerdomain @pwrdm is in the process of a state transition, |
ad67ef68 PW |
888 | * spin until it completes the power transition, or until an iteration |
889 | * bailout value is reached. Returns -EINVAL if the powerdomain | |
890 | * pointer is null, -EAGAIN if the bailout value was reached, or | |
891 | * returns 0 upon success. | |
892 | */ | |
893 | int pwrdm_wait_transition(struct powerdomain *pwrdm) | |
894 | { | |
9b7fc907 | 895 | int ret = -EINVAL; |
ad67ef68 PW |
896 | |
897 | if (!pwrdm) | |
898 | return -EINVAL; | |
899 | ||
9b7fc907 RN |
900 | if (arch_pwrdm && arch_pwrdm->pwrdm_wait_transition) |
901 | ret = arch_pwrdm->pwrdm_wait_transition(pwrdm); | |
ad67ef68 | 902 | |
9b7fc907 | 903 | return ret; |
ad67ef68 PW |
904 | } |
905 | ||
ba20bb12 PDS |
906 | int pwrdm_state_switch(struct powerdomain *pwrdm) |
907 | { | |
908 | return _pwrdm_state_switch(pwrdm, PWRDM_STATE_NOW); | |
909 | } | |
910 | ||
911 | int pwrdm_clkdm_state_switch(struct clockdomain *clkdm) | |
912 | { | |
913 | if (clkdm != NULL && clkdm->pwrdm.ptr != NULL) { | |
914 | pwrdm_wait_transition(clkdm->pwrdm.ptr); | |
915 | return pwrdm_state_switch(clkdm->pwrdm.ptr); | |
916 | } | |
917 | ||
918 | return -EINVAL; | |
919 | } | |
ba20bb12 PDS |
920 | |
921 | int pwrdm_pre_transition(void) | |
922 | { | |
6199ab26 | 923 | pwrdm_for_each(_pwrdm_pre_transition_cb, NULL); |
ba20bb12 PDS |
924 | return 0; |
925 | } | |
926 | ||
927 | int pwrdm_post_transition(void) | |
928 | { | |
6199ab26 | 929 | pwrdm_for_each(_pwrdm_post_transition_cb, NULL); |
ba20bb12 PDS |
930 | return 0; |
931 | } | |
7f595674 KH |
932 | |
933 | /** | |
934 | * pwrdm_get_context_loss_count - get powerdomain's context loss count | |
935 | * @pwrdm: struct powerdomain * to wait for | |
936 | * | |
937 | * Context loss count is the sum of powerdomain off-mode counter, the | |
938 | * logic off counter and the per-bank memory off counter. Returns 0 | |
939 | * (and WARNs) upon error, otherwise, returns the context loss count. | |
940 | */ | |
941 | u32 pwrdm_get_context_loss_count(struct powerdomain *pwrdm) | |
942 | { | |
943 | int i, count; | |
944 | ||
945 | if (!pwrdm) { | |
946 | WARN(1, "powerdomain: %s: pwrdm is null\n", __func__); | |
947 | return 0; | |
948 | } | |
949 | ||
950 | count = pwrdm->state_counter[PWRDM_POWER_OFF]; | |
951 | count += pwrdm->ret_logic_off_counter; | |
952 | ||
953 | for (i = 0; i < pwrdm->banks; i++) | |
954 | count += pwrdm->ret_mem_off_counter[i]; | |
955 | ||
956 | pr_debug("powerdomain: %s: context loss count = %u\n", | |
957 | pwrdm->name, count); | |
958 | ||
959 | return count; | |
960 | } | |
694606c4 PW |
961 | |
962 | /** | |
963 | * pwrdm_can_ever_lose_context - can this powerdomain ever lose context? | |
964 | * @pwrdm: struct powerdomain * | |
965 | * | |
966 | * Given a struct powerdomain * @pwrdm, returns 1 if the powerdomain | |
967 | * can lose either memory or logic context or if @pwrdm is invalid, or | |
968 | * returns 0 otherwise. This function is not concerned with how the | |
969 | * powerdomain registers are programmed (i.e., to go off or not); it's | |
970 | * concerned with whether it's ever possible for this powerdomain to | |
971 | * go off while some other part of the chip is active. This function | |
972 | * assumes that every powerdomain can go to either ON or INACTIVE. | |
973 | */ | |
974 | bool pwrdm_can_ever_lose_context(struct powerdomain *pwrdm) | |
975 | { | |
976 | int i; | |
977 | ||
978 | if (IS_ERR_OR_NULL(pwrdm)) { | |
979 | pr_debug("powerdomain: %s: invalid powerdomain pointer\n", | |
980 | __func__); | |
981 | return 1; | |
982 | } | |
983 | ||
984 | if (pwrdm->pwrsts & PWRSTS_OFF) | |
985 | return 1; | |
986 | ||
987 | if (pwrdm->pwrsts & PWRSTS_RET) { | |
988 | if (pwrdm->pwrsts_logic_ret & PWRSTS_OFF) | |
989 | return 1; | |
990 | ||
991 | for (i = 0; i < pwrdm->banks; i++) | |
992 | if (pwrdm->pwrsts_mem_ret[i] & PWRSTS_OFF) | |
993 | return 1; | |
994 | } | |
995 | ||
996 | for (i = 0; i < pwrdm->banks; i++) | |
997 | if (pwrdm->pwrsts_mem_on[i] & PWRSTS_OFF) | |
998 | return 1; | |
999 | ||
1000 | return 0; | |
1001 | } |