2 * OMAP powerdomain control
4 * Copyright (C) 2007-2008 Texas Instruments, Inc.
5 * Copyright (C) 2007-2009 Nokia Corporation
7 * Written by Paul Walmsley
8 * Added OMAP4 specific support by Abhijit Pagare <abhijitpagare@ti.com>
9 * State counting code by Tero Kristo <tero.kristo@nokia.com>
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.
17 #include <linux/kernel.h>
18 #include <linux/types.h>
19 #include <linux/list.h>
20 #include <linux/errno.h>
21 #include <linux/string.h>
22 #include "cm2xxx_3xxx.h"
24 #include "prm2xxx_3xxx.h"
28 #include <plat/powerdomain.h>
29 #include <plat/clockdomain.h>
30 #include <plat/prcm.h>
40 /* pwrdm_list contains all registered struct powerdomains */
41 static LIST_HEAD(pwrdm_list);
43 static struct pwrdm_ops *arch_pwrdm;
45 /* Private functions */
47 static struct powerdomain *_pwrdm_lookup(const char *name)
49 struct powerdomain *pwrdm, *temp_pwrdm;
53 list_for_each_entry(temp_pwrdm, &pwrdm_list, node) {
54 if (!strcmp(name, temp_pwrdm->name)) {
64 * _pwrdm_register - register a powerdomain
65 * @pwrdm: struct powerdomain * to register
67 * Adds a powerdomain to the internal powerdomain list. Returns
68 * -EINVAL if given a null pointer, -EEXIST if a powerdomain is
69 * already registered by the provided name, or 0 upon success.
71 static int _pwrdm_register(struct powerdomain *pwrdm)
78 if (!omap_chip_is(pwrdm->omap_chip))
81 if (_pwrdm_lookup(pwrdm->name))
84 list_add(&pwrdm->node, &pwrdm_list);
86 /* Initialize the powerdomain's state counter */
87 for (i = 0; i < PWRDM_MAX_PWRSTS; i++)
88 pwrdm->state_counter[i] = 0;
90 pwrdm->ret_logic_off_counter = 0;
91 for (i = 0; i < pwrdm->banks; i++)
92 pwrdm->ret_mem_off_counter[i] = 0;
94 pwrdm_wait_transition(pwrdm);
95 pwrdm->state = pwrdm_read_pwrst(pwrdm);
96 pwrdm->state_counter[pwrdm->state] = 1;
98 pr_debug("powerdomain: registered %s\n", pwrdm->name);
103 static void _update_logic_membank_counters(struct powerdomain *pwrdm)
106 u8 prev_logic_pwrst, prev_mem_pwrst;
108 prev_logic_pwrst = pwrdm_read_prev_logic_pwrst(pwrdm);
109 if ((pwrdm->pwrsts_logic_ret == PWRSTS_OFF_RET) &&
110 (prev_logic_pwrst == PWRDM_POWER_OFF))
111 pwrdm->ret_logic_off_counter++;
113 for (i = 0; i < pwrdm->banks; i++) {
114 prev_mem_pwrst = pwrdm_read_prev_mem_pwrst(pwrdm, i);
116 if ((pwrdm->pwrsts_mem_ret[i] == PWRSTS_OFF_RET) &&
117 (prev_mem_pwrst == PWRDM_POWER_OFF))
118 pwrdm->ret_mem_off_counter[i]++;
122 static int _pwrdm_state_switch(struct powerdomain *pwrdm, int flag)
131 state = pwrdm_read_pwrst(pwrdm);
134 case PWRDM_STATE_NOW:
137 case PWRDM_STATE_PREV:
138 prev = pwrdm_read_prev_pwrst(pwrdm);
139 if (pwrdm->state != prev)
140 pwrdm->state_counter[prev]++;
141 if (prev == PWRDM_POWER_RET)
142 _update_logic_membank_counters(pwrdm);
149 pwrdm->state_counter[state]++;
151 pm_dbg_update_time(pwrdm, prev);
153 pwrdm->state = state;
158 static int _pwrdm_pre_transition_cb(struct powerdomain *pwrdm, void *unused)
160 pwrdm_clear_all_prev_pwrst(pwrdm);
161 _pwrdm_state_switch(pwrdm, PWRDM_STATE_NOW);
165 static int _pwrdm_post_transition_cb(struct powerdomain *pwrdm, void *unused)
167 _pwrdm_state_switch(pwrdm, PWRDM_STATE_PREV);
171 /* Public functions */
174 * pwrdm_init - set up the powerdomain layer
175 * @pwrdm_list: array of struct powerdomain pointers to register
176 * @custom_funcs: func pointers for arch specfic implementations
178 * Loop through the array of powerdomains @pwrdm_list, registering all
179 * that are available on the current CPU. If pwrdm_list is supplied
180 * and not null, all of the referenced powerdomains will be
181 * registered. No return value. XXX pwrdm_list is not really a
182 * "list"; it is an array. Rename appropriately.
184 void pwrdm_init(struct powerdomain **pwrdm_list, struct pwrdm_ops *custom_funcs)
186 struct powerdomain **p = NULL;
189 WARN(1, "powerdomain: No custom pwrdm functions registered\n");
191 arch_pwrdm = custom_funcs;
194 for (p = pwrdm_list; *p; p++)
200 * pwrdm_lookup - look up a powerdomain by name, return a pointer
201 * @name: name of powerdomain
203 * Find a registered powerdomain by its name @name. Returns a pointer
204 * to the struct powerdomain if found, or NULL otherwise.
206 struct powerdomain *pwrdm_lookup(const char *name)
208 struct powerdomain *pwrdm;
213 pwrdm = _pwrdm_lookup(name);
219 * pwrdm_for_each - call function on each registered clockdomain
220 * @fn: callback function *
222 * Call the supplied function @fn for each registered powerdomain.
223 * The callback function @fn can return anything but 0 to bail out
224 * early from the iterator. Returns the last return value of the
225 * callback function, which should be 0 for success or anything else
226 * to indicate failure; or -EINVAL if the function pointer is null.
228 int pwrdm_for_each(int (*fn)(struct powerdomain *pwrdm, void *user),
231 struct powerdomain *temp_pwrdm;
237 list_for_each_entry(temp_pwrdm, &pwrdm_list, node) {
238 ret = (*fn)(temp_pwrdm, user);
247 * pwrdm_add_clkdm - add a clockdomain to a powerdomain
248 * @pwrdm: struct powerdomain * to add the clockdomain to
249 * @clkdm: struct clockdomain * to associate with a powerdomain
251 * Associate the clockdomain @clkdm with a powerdomain @pwrdm. This
252 * enables the use of pwrdm_for_each_clkdm(). Returns -EINVAL if
253 * presented with invalid pointers; -ENOMEM if memory could not be allocated;
256 int pwrdm_add_clkdm(struct powerdomain *pwrdm, struct clockdomain *clkdm)
261 if (!pwrdm || !clkdm)
264 pr_debug("powerdomain: associating clockdomain %s with powerdomain "
265 "%s\n", clkdm->name, pwrdm->name);
267 for (i = 0; i < PWRDM_MAX_CLKDMS; i++) {
268 if (!pwrdm->pwrdm_clkdms[i])
271 if (pwrdm->pwrdm_clkdms[i] == clkdm) {
278 if (i == PWRDM_MAX_CLKDMS) {
279 pr_debug("powerdomain: increase PWRDM_MAX_CLKDMS for "
280 "pwrdm %s clkdm %s\n", pwrdm->name, clkdm->name);
286 pwrdm->pwrdm_clkdms[i] = clkdm;
295 * pwrdm_del_clkdm - remove a clockdomain from a powerdomain
296 * @pwrdm: struct powerdomain * to add the clockdomain to
297 * @clkdm: struct clockdomain * to associate with a powerdomain
299 * Dissociate the clockdomain @clkdm from the powerdomain
300 * @pwrdm. Returns -EINVAL if presented with invalid pointers; -ENOENT
301 * if @clkdm was not associated with the powerdomain, or 0 upon
304 int pwrdm_del_clkdm(struct powerdomain *pwrdm, struct clockdomain *clkdm)
309 if (!pwrdm || !clkdm)
312 pr_debug("powerdomain: dissociating clockdomain %s from powerdomain "
313 "%s\n", clkdm->name, pwrdm->name);
315 for (i = 0; i < PWRDM_MAX_CLKDMS; i++)
316 if (pwrdm->pwrdm_clkdms[i] == clkdm)
319 if (i == PWRDM_MAX_CLKDMS) {
320 pr_debug("powerdomain: clkdm %s not associated with pwrdm "
321 "%s ?!\n", clkdm->name, pwrdm->name);
326 pwrdm->pwrdm_clkdms[i] = NULL;
335 * pwrdm_for_each_clkdm - call function on each clkdm in a pwrdm
336 * @pwrdm: struct powerdomain * to iterate over
337 * @fn: callback function *
339 * Call the supplied function @fn for each clockdomain in the powerdomain
340 * @pwrdm. The callback function can return anything but 0 to bail
341 * out early from the iterator. Returns -EINVAL if presented with
342 * invalid pointers; or passes along the last return value of the
343 * callback function, which should be 0 for success or anything else
344 * to indicate failure.
346 int pwrdm_for_each_clkdm(struct powerdomain *pwrdm,
347 int (*fn)(struct powerdomain *pwrdm,
348 struct clockdomain *clkdm))
356 for (i = 0; i < PWRDM_MAX_CLKDMS && !ret; i++)
357 ret = (*fn)(pwrdm, pwrdm->pwrdm_clkdms[i]);
363 * pwrdm_get_mem_bank_count - get number of memory banks in this powerdomain
364 * @pwrdm: struct powerdomain *
366 * Return the number of controllable memory banks in powerdomain @pwrdm,
367 * starting with 1. Returns -EINVAL if the powerdomain pointer is null.
369 int pwrdm_get_mem_bank_count(struct powerdomain *pwrdm)
378 * pwrdm_set_next_pwrst - set next powerdomain power state
379 * @pwrdm: struct powerdomain * to set
380 * @pwrst: one of the PWRDM_POWER_* macros
382 * Set the powerdomain @pwrdm's next power state to @pwrst. The powerdomain
383 * may not enter this state immediately if the preconditions for this state
384 * have not been satisfied. Returns -EINVAL if the powerdomain pointer is
385 * null or if the power state is invalid for the powerdomin, or returns 0
388 int pwrdm_set_next_pwrst(struct powerdomain *pwrdm, u8 pwrst)
395 if (!(pwrdm->pwrsts & (1 << pwrst)))
398 pr_debug("powerdomain: setting next powerstate for %s to %0x\n",
401 if (arch_pwrdm && arch_pwrdm->pwrdm_set_next_pwrst)
402 ret = arch_pwrdm->pwrdm_set_next_pwrst(pwrdm, pwrst);
408 * pwrdm_read_next_pwrst - get next powerdomain power state
409 * @pwrdm: struct powerdomain * to get power state
411 * Return the powerdomain @pwrdm's next power state. Returns -EINVAL
412 * if the powerdomain pointer is null or returns the next power state
415 int pwrdm_read_next_pwrst(struct powerdomain *pwrdm)
422 if (arch_pwrdm && arch_pwrdm->pwrdm_read_next_pwrst)
423 ret = arch_pwrdm->pwrdm_read_next_pwrst(pwrdm);
429 * pwrdm_read_pwrst - get current powerdomain power state
430 * @pwrdm: struct powerdomain * to get power state
432 * Return the powerdomain @pwrdm's current power state. Returns -EINVAL
433 * if the powerdomain pointer is null or returns the current power state
436 int pwrdm_read_pwrst(struct powerdomain *pwrdm)
443 if (arch_pwrdm && arch_pwrdm->pwrdm_read_pwrst)
444 ret = arch_pwrdm->pwrdm_read_pwrst(pwrdm);
450 * pwrdm_read_prev_pwrst - get previous powerdomain power state
451 * @pwrdm: struct powerdomain * to get previous power state
453 * Return the powerdomain @pwrdm's previous power state. Returns -EINVAL
454 * if the powerdomain pointer is null or returns the previous power state
457 int pwrdm_read_prev_pwrst(struct powerdomain *pwrdm)
464 if (arch_pwrdm && arch_pwrdm->pwrdm_read_prev_pwrst)
465 ret = arch_pwrdm->pwrdm_read_prev_pwrst(pwrdm);
471 * pwrdm_set_logic_retst - set powerdomain logic power state upon retention
472 * @pwrdm: struct powerdomain * to set
473 * @pwrst: one of the PWRDM_POWER_* macros
475 * Set the next power state @pwrst that the logic portion of the
476 * powerdomain @pwrdm will enter when the powerdomain enters retention.
477 * This will be either RETENTION or OFF, if supported. Returns
478 * -EINVAL if the powerdomain pointer is null or the target power
479 * state is not not supported, or returns 0 upon success.
481 int pwrdm_set_logic_retst(struct powerdomain *pwrdm, u8 pwrst)
488 if (!(pwrdm->pwrsts_logic_ret & (1 << pwrst)))
491 pr_debug("powerdomain: setting next logic powerstate for %s to %0x\n",
494 if (arch_pwrdm && arch_pwrdm->pwrdm_set_logic_retst)
495 ret = arch_pwrdm->pwrdm_set_logic_retst(pwrdm, pwrst);
501 * pwrdm_set_mem_onst - set memory power state while powerdomain ON
502 * @pwrdm: struct powerdomain * to set
503 * @bank: memory bank number to set (0-3)
504 * @pwrst: one of the PWRDM_POWER_* macros
506 * Set the next power state @pwrst that memory bank @bank of the
507 * powerdomain @pwrdm will enter when the powerdomain enters the ON
508 * state. @bank will be a number from 0 to 3, and represents different
509 * types of memory, depending on the powerdomain. Returns -EINVAL if
510 * the powerdomain pointer is null or the target power state is not
511 * not supported for this memory bank, -EEXIST if the target memory
512 * bank does not exist or is not controllable, or returns 0 upon
515 int pwrdm_set_mem_onst(struct powerdomain *pwrdm, u8 bank, u8 pwrst)
522 if (pwrdm->banks < (bank + 1))
525 if (!(pwrdm->pwrsts_mem_on[bank] & (1 << pwrst)))
528 pr_debug("powerdomain: setting next memory powerstate for domain %s "
529 "bank %0x while pwrdm-ON to %0x\n", pwrdm->name, bank, pwrst);
531 if (arch_pwrdm && arch_pwrdm->pwrdm_set_mem_onst)
532 ret = arch_pwrdm->pwrdm_set_mem_onst(pwrdm, bank, pwrst);
538 * pwrdm_set_mem_retst - set memory power state while powerdomain in RET
539 * @pwrdm: struct powerdomain * to set
540 * @bank: memory bank number to set (0-3)
541 * @pwrst: one of the PWRDM_POWER_* macros
543 * Set the next power state @pwrst that memory bank @bank of the
544 * powerdomain @pwrdm will enter when the powerdomain enters the
545 * RETENTION state. Bank will be a number from 0 to 3, and represents
546 * different types of memory, depending on the powerdomain. @pwrst
547 * will be either RETENTION or OFF, if supported. Returns -EINVAL if
548 * the powerdomain pointer is null or the target power state is not
549 * not supported for this memory bank, -EEXIST if the target memory
550 * bank does not exist or is not controllable, or returns 0 upon
553 int pwrdm_set_mem_retst(struct powerdomain *pwrdm, u8 bank, u8 pwrst)
560 if (pwrdm->banks < (bank + 1))
563 if (!(pwrdm->pwrsts_mem_ret[bank] & (1 << pwrst)))
566 pr_debug("powerdomain: setting next memory powerstate for domain %s "
567 "bank %0x while pwrdm-RET to %0x\n", pwrdm->name, bank, pwrst);
569 if (arch_pwrdm && arch_pwrdm->pwrdm_set_mem_retst)
570 ret = arch_pwrdm->pwrdm_set_mem_retst(pwrdm, bank, pwrst);
576 * pwrdm_read_logic_pwrst - get current powerdomain logic retention power state
577 * @pwrdm: struct powerdomain * to get current logic retention power state
579 * Return the power state that the logic portion of powerdomain @pwrdm
580 * will enter when the powerdomain enters retention. Returns -EINVAL
581 * if the powerdomain pointer is null or returns the logic retention
582 * power state upon success.
584 int pwrdm_read_logic_pwrst(struct powerdomain *pwrdm)
591 if (arch_pwrdm && arch_pwrdm->pwrdm_read_logic_pwrst)
592 ret = arch_pwrdm->pwrdm_read_logic_pwrst(pwrdm);
598 * pwrdm_read_prev_logic_pwrst - get previous powerdomain logic power state
599 * @pwrdm: struct powerdomain * to get previous logic power state
601 * Return the powerdomain @pwrdm's previous logic power state. Returns
602 * -EINVAL if the powerdomain pointer is null or returns the previous
603 * logic power state upon success.
605 int pwrdm_read_prev_logic_pwrst(struct powerdomain *pwrdm)
612 if (arch_pwrdm && arch_pwrdm->pwrdm_read_prev_logic_pwrst)
613 ret = arch_pwrdm->pwrdm_read_prev_logic_pwrst(pwrdm);
619 * pwrdm_read_logic_retst - get next powerdomain logic power state
620 * @pwrdm: struct powerdomain * to get next logic power state
622 * Return the powerdomain pwrdm's logic power state. Returns -EINVAL
623 * if the powerdomain pointer is null or returns the next logic
624 * power state upon success.
626 int pwrdm_read_logic_retst(struct powerdomain *pwrdm)
633 if (arch_pwrdm && arch_pwrdm->pwrdm_read_logic_retst)
634 ret = arch_pwrdm->pwrdm_read_logic_retst(pwrdm);
640 * pwrdm_read_mem_pwrst - get current memory bank power state
641 * @pwrdm: struct powerdomain * to get current memory bank power state
642 * @bank: memory bank number (0-3)
644 * Return the powerdomain @pwrdm's current memory power state for bank
645 * @bank. Returns -EINVAL if the powerdomain pointer is null, -EEXIST if
646 * the target memory bank does not exist or is not controllable, or
647 * returns the current memory power state upon success.
649 int pwrdm_read_mem_pwrst(struct powerdomain *pwrdm, u8 bank)
656 if (pwrdm->banks < (bank + 1))
659 if (pwrdm->flags & PWRDM_HAS_MPU_QUIRK)
662 if (arch_pwrdm && arch_pwrdm->pwrdm_read_mem_pwrst)
663 ret = arch_pwrdm->pwrdm_read_mem_pwrst(pwrdm, bank);
669 * pwrdm_read_prev_mem_pwrst - get previous memory bank power state
670 * @pwrdm: struct powerdomain * to get previous memory bank power state
671 * @bank: memory bank number (0-3)
673 * Return the powerdomain @pwrdm's previous memory power state for
674 * bank @bank. Returns -EINVAL if the powerdomain pointer is null,
675 * -EEXIST if the target memory bank does not exist or is not
676 * controllable, or returns the previous memory power state upon
679 int pwrdm_read_prev_mem_pwrst(struct powerdomain *pwrdm, u8 bank)
686 if (pwrdm->banks < (bank + 1))
689 if (pwrdm->flags & PWRDM_HAS_MPU_QUIRK)
692 if (arch_pwrdm && arch_pwrdm->pwrdm_read_prev_mem_pwrst)
693 ret = arch_pwrdm->pwrdm_read_prev_mem_pwrst(pwrdm, bank);
699 * pwrdm_read_mem_retst - get next memory bank power state
700 * @pwrdm: struct powerdomain * to get mext memory bank power state
701 * @bank: memory bank number (0-3)
703 * Return the powerdomain pwrdm's next memory power state for bank
704 * x. Returns -EINVAL if the powerdomain pointer is null, -EEXIST if
705 * the target memory bank does not exist or is not controllable, or
706 * returns the next memory power state upon success.
708 int pwrdm_read_mem_retst(struct powerdomain *pwrdm, u8 bank)
715 if (pwrdm->banks < (bank + 1))
718 if (arch_pwrdm && arch_pwrdm->pwrdm_read_mem_retst)
719 ret = arch_pwrdm->pwrdm_read_mem_retst(pwrdm, bank);
725 * pwrdm_clear_all_prev_pwrst - clear previous powerstate register for a pwrdm
726 * @pwrdm: struct powerdomain * to clear
728 * Clear the powerdomain's previous power state register @pwrdm.
729 * Clears the entire register, including logic and memory bank
730 * previous power states. Returns -EINVAL if the powerdomain pointer
731 * is null, or returns 0 upon success.
733 int pwrdm_clear_all_prev_pwrst(struct powerdomain *pwrdm)
741 * XXX should get the powerdomain's current state here;
742 * warn & fail if it is not ON.
745 pr_debug("powerdomain: clearing previous power state reg for %s\n",
748 if (arch_pwrdm && arch_pwrdm->pwrdm_clear_all_prev_pwrst)
749 ret = arch_pwrdm->pwrdm_clear_all_prev_pwrst(pwrdm);
755 * pwrdm_enable_hdwr_sar - enable automatic hardware SAR for a pwrdm
756 * @pwrdm: struct powerdomain *
758 * Enable automatic context save-and-restore upon power state change
759 * for some devices in the powerdomain @pwrdm. Warning: this only
760 * affects a subset of devices in a powerdomain; check the TRM
761 * closely. Returns -EINVAL if the powerdomain pointer is null or if
762 * the powerdomain does not support automatic save-and-restore, or
763 * returns 0 upon success.
765 int pwrdm_enable_hdwr_sar(struct powerdomain *pwrdm)
772 if (!(pwrdm->flags & PWRDM_HAS_HDWR_SAR))
775 pr_debug("powerdomain: %s: setting SAVEANDRESTORE bit\n",
778 if (arch_pwrdm && arch_pwrdm->pwrdm_enable_hdwr_sar)
779 ret = arch_pwrdm->pwrdm_enable_hdwr_sar(pwrdm);
785 * pwrdm_disable_hdwr_sar - disable automatic hardware SAR for a pwrdm
786 * @pwrdm: struct powerdomain *
788 * Disable automatic context save-and-restore upon power state change
789 * for some devices in the powerdomain @pwrdm. Warning: this only
790 * affects a subset of devices in a powerdomain; check the TRM
791 * closely. Returns -EINVAL if the powerdomain pointer is null or if
792 * the powerdomain does not support automatic save-and-restore, or
793 * returns 0 upon success.
795 int pwrdm_disable_hdwr_sar(struct powerdomain *pwrdm)
802 if (!(pwrdm->flags & PWRDM_HAS_HDWR_SAR))
805 pr_debug("powerdomain: %s: clearing SAVEANDRESTORE bit\n",
808 if (arch_pwrdm && arch_pwrdm->pwrdm_disable_hdwr_sar)
809 ret = arch_pwrdm->pwrdm_disable_hdwr_sar(pwrdm);
815 * pwrdm_has_hdwr_sar - test whether powerdomain supports hardware SAR
816 * @pwrdm: struct powerdomain *
818 * Returns 1 if powerdomain @pwrdm supports hardware save-and-restore
819 * for some devices, or 0 if it does not.
821 bool pwrdm_has_hdwr_sar(struct powerdomain *pwrdm)
823 return (pwrdm && pwrdm->flags & PWRDM_HAS_HDWR_SAR) ? 1 : 0;
827 * pwrdm_set_lowpwrstchange - Request a low power state change
828 * @pwrdm: struct powerdomain *
830 * Allows a powerdomain to transtion to a lower power sleep state
831 * from an existing sleep state without waking up the powerdomain.
832 * Returns -EINVAL if the powerdomain pointer is null or if the
833 * powerdomain does not support LOWPOWERSTATECHANGE, or returns 0
836 int pwrdm_set_lowpwrstchange(struct powerdomain *pwrdm)
843 if (!(pwrdm->flags & PWRDM_HAS_LOWPOWERSTATECHANGE))
846 pr_debug("powerdomain: %s: setting LOWPOWERSTATECHANGE bit\n",
849 if (arch_pwrdm && arch_pwrdm->pwrdm_set_lowpwrstchange)
850 ret = arch_pwrdm->pwrdm_set_lowpwrstchange(pwrdm);
856 * pwrdm_wait_transition - wait for powerdomain power transition to finish
857 * @pwrdm: struct powerdomain * to wait for
859 * If the powerdomain @pwrdm is in the process of a state transition,
860 * spin until it completes the power transition, or until an iteration
861 * bailout value is reached. Returns -EINVAL if the powerdomain
862 * pointer is null, -EAGAIN if the bailout value was reached, or
863 * returns 0 upon success.
865 int pwrdm_wait_transition(struct powerdomain *pwrdm)
872 if (arch_pwrdm && arch_pwrdm->pwrdm_wait_transition)
873 ret = arch_pwrdm->pwrdm_wait_transition(pwrdm);
878 int pwrdm_state_switch(struct powerdomain *pwrdm)
880 return _pwrdm_state_switch(pwrdm, PWRDM_STATE_NOW);
883 int pwrdm_clkdm_state_switch(struct clockdomain *clkdm)
885 if (clkdm != NULL && clkdm->pwrdm.ptr != NULL) {
886 pwrdm_wait_transition(clkdm->pwrdm.ptr);
887 return pwrdm_state_switch(clkdm->pwrdm.ptr);
893 int pwrdm_pre_transition(void)
895 pwrdm_for_each(_pwrdm_pre_transition_cb, NULL);
899 int pwrdm_post_transition(void)
901 pwrdm_for_each(_pwrdm_post_transition_cb, NULL);