0
0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-12-17 16:14:25 +08:00
linux/arch/arm/mach-omap2/pm44xx.c
Linus Torvalds 008d23e485 Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (43 commits)
  Documentation/trace/events.txt: Remove obsolete sched_signal_send.
  writeback: fix global_dirty_limits comment runtime -> real-time
  ppc: fix comment typo singal -> signal
  drivers: fix comment typo diable -> disable.
  m68k: fix comment typo diable -> disable.
  wireless: comment typo fix diable -> disable.
  media: comment typo fix diable -> disable.
  remove doc for obsolete dynamic-printk kernel-parameter
  remove extraneous 'is' from Documentation/iostats.txt
  Fix spelling milisec -> ms in snd_ps3 module parameter description
  Fix spelling mistakes in comments
  Revert conflicting V4L changes
  i7core_edac: fix typos in comments
  mm/rmap.c: fix comment
  sound, ca0106: Fix assignment to 'channel'.
  hrtimer: fix a typo in comment
  init/Kconfig: fix typo
  anon_inodes: fix wrong function name in comment
  fix comment typos concerning "consistent"
  poll: fix a typo in comment
  ...

Fix up trivial conflicts in:
 - drivers/net/wireless/iwlwifi/iwl-core.c (moved to iwl-legacy.c)
 - fs/ext4/ext4.h

Also fix missed 'diabled' typo in drivers/net/bnx2x/bnx2x.h while at it.
2011-01-13 10:05:56 -08:00

124 lines
2.2 KiB
C

/*
* OMAP4 Power Management Routines
*
* Copyright (C) 2010 Texas Instruments, Inc.
* Rajendra Nayak <rnayak@ti.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/pm.h>
#include <linux/suspend.h>
#include <linux/module.h>
#include <linux/list.h>
#include <linux/err.h>
#include <linux/slab.h>
#include "powerdomain.h"
#include <mach/omap4-common.h>
struct power_state {
struct powerdomain *pwrdm;
u32 next_state;
#ifdef CONFIG_SUSPEND
u32 saved_state;
#endif
struct list_head node;
};
static LIST_HEAD(pwrst_list);
#ifdef CONFIG_SUSPEND
static int omap4_pm_suspend(void)
{
do_wfi();
return 0;
}
static int omap4_pm_enter(suspend_state_t suspend_state)
{
int ret = 0;
switch (suspend_state) {
case PM_SUSPEND_STANDBY:
case PM_SUSPEND_MEM:
ret = omap4_pm_suspend();
break;
default:
ret = -EINVAL;
}
return ret;
}
static int omap4_pm_begin(suspend_state_t state)
{
disable_hlt();
return 0;
}
static void omap4_pm_end(void)
{
enable_hlt();
return;
}
static const struct platform_suspend_ops omap_pm_ops = {
.begin = omap4_pm_begin,
.end = omap4_pm_end,
.enter = omap4_pm_enter,
.valid = suspend_valid_only_mem,
};
#endif /* CONFIG_SUSPEND */
static int __init pwrdms_setup(struct powerdomain *pwrdm, void *unused)
{
struct power_state *pwrst;
if (!pwrdm->pwrsts)
return 0;
pwrst = kmalloc(sizeof(struct power_state), GFP_ATOMIC);
if (!pwrst)
return -ENOMEM;
pwrst->pwrdm = pwrdm;
pwrst->next_state = PWRDM_POWER_ON;
list_add(&pwrst->node, &pwrst_list);
return pwrdm_set_next_pwrst(pwrst->pwrdm, pwrst->next_state);
}
/**
* omap4_pm_init - Init routine for OMAP4 PM
*
* Initializes all powerdomain and clockdomain target states
* and all PRCM settings.
*/
static int __init omap4_pm_init(void)
{
int ret;
if (!cpu_is_omap44xx())
return -ENODEV;
pr_err("Power Management for TI OMAP4.\n");
#ifdef CONFIG_PM
ret = pwrdm_for_each(pwrdms_setup, NULL);
if (ret) {
pr_err("Failed to setup powerdomains\n");
goto err2;
}
#endif
#ifdef CONFIG_SUSPEND
suspend_set_ops(&omap_pm_ops);
#endif /* CONFIG_SUSPEND */
err2:
return ret;
}
late_initcall(omap4_pm_init);