2 * OMAP4 Power Management Routines
4 * Copyright (C) 2010 Texas Instruments, Inc.
5 * Rajendra Nayak <rnayak@ti.com>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
13 #include <linux/suspend.h>
14 #include <linux/module.h>
15 #include <linux/list.h>
16 #include <linux/err.h>
17 #include <linux/slab.h>
19 #include "powerdomain.h"
20 #include <mach/omap4-common.h>
23 struct powerdomain *pwrdm;
28 struct list_head node;
31 static LIST_HEAD(pwrst_list);
34 static int omap4_pm_suspend(void)
40 static int omap4_pm_enter(suspend_state_t suspend_state)
44 switch (suspend_state) {
45 case PM_SUSPEND_STANDBY:
47 ret = omap4_pm_suspend();
56 static int omap4_pm_begin(suspend_state_t state)
62 static void omap4_pm_end(void)
68 static const struct platform_suspend_ops omap_pm_ops = {
69 .begin = omap4_pm_begin,
71 .enter = omap4_pm_enter,
72 .valid = suspend_valid_only_mem,
74 #endif /* CONFIG_SUSPEND */
76 static int __init pwrdms_setup(struct powerdomain *pwrdm, void *unused)
78 struct power_state *pwrst;
83 pwrst = kmalloc(sizeof(struct power_state), GFP_ATOMIC);
87 pwrst->next_state = PWRDM_POWER_ON;
88 list_add(&pwrst->node, &pwrst_list);
90 return pwrdm_set_next_pwrst(pwrst->pwrdm, pwrst->next_state);
94 * omap4_pm_init - Init routine for OMAP4 PM
96 * Initializes all powerdomain and clockdomain target states
97 * and all PRCM settings.
99 static int __init omap4_pm_init(void)
103 if (!cpu_is_omap44xx())
106 pr_err("Power Management for TI OMAP4.\n");
108 ret = pwrdm_for_each(pwrdms_setup, NULL);
110 pr_err("Failed to setup powerdomains\n");
114 #ifdef CONFIG_SUSPEND
115 suspend_set_ops(&omap_pm_ops);
116 #endif /* CONFIG_SUSPEND */
121 late_initcall(omap4_pm_init);