mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-26 21:10:52 +07:00
34549009a1
pm44xx.c is built only when CONFIG_PM is setup, remove redundant CONFIG_PM check. This also fixes: https://bugzilla.kernel.org/show_bug.cgi?id=25022 Reported-by: Martin Etti <ettl.martin@gmx.de> Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Kevin Hilman <khilman@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
122 lines
2.2 KiB
C
122 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");
|
|
|
|
ret = pwrdm_for_each(pwrdms_setup, NULL);
|
|
if (ret) {
|
|
pr_err("Failed to setup powerdomains\n");
|
|
goto err2;
|
|
}
|
|
|
|
#ifdef CONFIG_SUSPEND
|
|
suspend_set_ops(&omap_pm_ops);
|
|
#endif /* CONFIG_SUSPEND */
|
|
|
|
err2:
|
|
return ret;
|
|
}
|
|
late_initcall(omap4_pm_init);
|