linux/drivers/sh/pm_runtime.c
Ulf Hansson f1bf45c70f drivers: sh: Leave disabling of unused PM domains to genpd
Since genpd at late init, will try to disable unused PM domains we
don't need to do it from here as well.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-09-09 00:46:13 +02:00

101 lines
2.4 KiB
C

/*
* Runtime PM support code
*
* Copyright (C) 2009-2010 Magnus Damm
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/io.h>
#include <linux/pm_runtime.h>
#include <linux/pm_domain.h>
#include <linux/pm_clock.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
#include <linux/sh_clk.h>
#include <linux/bitmap.h>
#include <linux/slab.h>
#ifdef CONFIG_PM_RUNTIME
static int sh_pm_runtime_suspend(struct device *dev)
{
int ret;
ret = pm_generic_runtime_suspend(dev);
if (ret) {
dev_err(dev, "failed to suspend device\n");
return ret;
}
ret = pm_clk_suspend(dev);
if (ret) {
dev_err(dev, "failed to suspend clock\n");
pm_generic_runtime_resume(dev);
return ret;
}
return 0;
}
static int sh_pm_runtime_resume(struct device *dev)
{
int ret;
ret = pm_clk_resume(dev);
if (ret) {
dev_err(dev, "failed to resume clock\n");
return ret;
}
return pm_generic_runtime_resume(dev);
}
static struct dev_pm_domain default_pm_domain = {
.ops = {
.runtime_suspend = sh_pm_runtime_suspend,
.runtime_resume = sh_pm_runtime_resume,
USE_PLATFORM_PM_SLEEP_OPS
},
};
#define DEFAULT_PM_DOMAIN_PTR (&default_pm_domain)
#else
#define DEFAULT_PM_DOMAIN_PTR NULL
#endif /* CONFIG_PM_RUNTIME */
static struct pm_clk_notifier_block platform_bus_notifier = {
.pm_domain = DEFAULT_PM_DOMAIN_PTR,
.con_ids = { NULL, },
};
static int __init sh_pm_runtime_init(void)
{
if (IS_ENABLED(CONFIG_ARCH_SHMOBILE_MULTI)) {
if (!of_machine_is_compatible("renesas,emev2") &&
!of_machine_is_compatible("renesas,r7s72100") &&
!of_machine_is_compatible("renesas,r8a73a4") &&
!of_machine_is_compatible("renesas,r8a7740") &&
!of_machine_is_compatible("renesas,r8a7778") &&
!of_machine_is_compatible("renesas,r8a7779") &&
!of_machine_is_compatible("renesas,r8a7790") &&
!of_machine_is_compatible("renesas,r8a7791") &&
!of_machine_is_compatible("renesas,r8a7792") &&
!of_machine_is_compatible("renesas,r8a7793") &&
!of_machine_is_compatible("renesas,r8a7794") &&
!of_machine_is_compatible("renesas,sh7372") &&
!of_machine_is_compatible("renesas,sh73a0"))
return 0;
}
pm_clk_add_notifier(&platform_bus_type, &platform_bus_notifier);
return 0;
}
core_initcall(sh_pm_runtime_init);