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ARM: ux500: cpuidle: Instantiate the driver from platform device

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To break the dependency on the "id.h" file we move the cpuidle driver
to a platform device. Now we only call the probe() on this driver if
we find a corresponding platform device (which is spawned from the
PRCMU MFD driver).

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
This commit is contained in:
Linus Walleij 2013-07-10 15:35:26 +02:00 committed by Daniel Lezcano
parent 7006b8a1fa
commit 8025395f39
2 changed files with 15 additions and 6 deletions
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17
arch/arm/mach-ux500/cpuidle.c
View File

@ -16,12 +16,12 @@
#include <linux/smp.h>
#include <linux/mfd/dbx500-prcmu.h>
#include <linux/platform_data/arm-ux500-pm.h>
#include <linux/platform_device.h>
#include <asm/cpuidle.h>
#include <asm/proc-fns.h>
#include "db8500-regs.h"
#include "id.h"
static atomic_t master = ATOMIC_INIT(0);
static DEFINE_SPINLOCK(master_lock);
@ -113,11 +113,8 @@ static struct cpuidle_driver ux500_idle_driver = {
.state_count = 2,
};
int __init ux500_idle_init(void)
static int __init dbx500_cpuidle_probe(struct platform_device *pdev)
{
if (!(cpu_is_u8500_family() || cpu_is_ux540_family()))
return -ENODEV;
/* Configure wake up reasons */
prcmu_enable_wakeups(PRCMU_WAKEUP(ARM) | PRCMU_WAKEUP(RTC) |
PRCMU_WAKEUP(ABB));
@ -125,4 +122,12 @@ int __init ux500_idle_init(void)
return cpuidle_register(&ux500_idle_driver, NULL);
}
device_initcall(ux500_idle_init);
static struct platform_driver dbx500_cpuidle_plat_driver = {
.driver = {
.name = "cpuidle-dbx500",
.owner = THIS_MODULE,
},
.probe = dbx500_cpuidle_probe,
};
module_platform_driver(dbx500_cpuidle_plat_driver);

4
drivers/mfd/db8500-prcmu.c
View File

@ -3093,6 +3093,10 @@ static struct mfd_cell db8500_prcmu_devs[] = {
.platform_data = &db8500_cpufreq_table,
.pdata_size = sizeof(db8500_cpufreq_table),
},
{
.name = "cpuidle-dbx500",
.of_compatible = "stericsson,cpuidle-dbx500",
},
{
.name = "db8500-thermal",
.num_resources = ARRAY_SIZE(db8500_thsens_resources),