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mfd: Add ability to wake the system for 88pm860x 

For 88pm860x pmic, it can wake the system from low power mode by irq,
its sub-devs like RTC and onkey can be enabled for this usage.

Signed-off-by: Jett.Zhou <jtzhou@marvell.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
hifive-unleashed-5.1
Jett.Zhou 2012-02-27 15:44:20 +01:00 committed by Samuel Ortiz
parent b8b8d7932b
commit 2853378b6e
4 changed files with 79 additions and 0 deletions
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26
drivers/input/misc/88pm860x_onkey.c
View File

@ -105,6 +105,8 @@ static int __devinit pm860x_onkey_probe(struct platform_device *pdev)
}
platform_set_drvdata(pdev, info);
device_init_wakeup(&pdev->dev, 1);
return 0;
out_irq:
@ -129,10 +131,34 @@ static int __devexit pm860x_onkey_remove(struct platform_device *pdev)
return 0;
}
#ifdef CONFIG_PM_SLEEP
static int pm860x_onkey_suspend(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
if (device_may_wakeup(dev))
chip->wakeup_flag |= 1 << PM8607_IRQ_ONKEY;
return 0;
}
static int pm860x_onkey_resume(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
if (device_may_wakeup(dev))
chip->wakeup_flag &= ~(1 << PM8607_IRQ_ONKEY);
return 0;
}
#endif
static SIMPLE_DEV_PM_OPS(pm860x_onkey_pm_ops, pm860x_onkey_suspend, pm860x_onkey_resume);
static struct platform_driver pm860x_onkey_driver = {
.driver = {
.name = "88pm860x-onkey",
.owner = THIS_MODULE,
.pm = &pm860x_onkey_pm_ops,
},
.probe = pm860x_onkey_probe,
.remove = __devexit_p(pm860x_onkey_remove),

25
drivers/mfd/88pm860x-i2c.c
View File

@ -334,10 +334,35 @@ static int __devexit pm860x_remove(struct i2c_client *client)
return 0;
}
#ifdef CONFIG_PM_SLEEP
static int pm860x_suspend(struct device *dev)
{
struct i2c_client *client = container_of(dev, struct i2c_client, dev);
struct pm860x_chip *chip = i2c_get_clientdata(client);
if (device_may_wakeup(dev) && chip->wakeup_flag)
enable_irq_wake(chip->core_irq);
return 0;
}
static int pm860x_resume(struct device *dev)
{
struct i2c_client *client = container_of(dev, struct i2c_client, dev);
struct pm860x_chip *chip = i2c_get_clientdata(client);
if (device_may_wakeup(dev) && chip->wakeup_flag)
disable_irq_wake(chip->core_irq);
return 0;
}
#endif
static SIMPLE_DEV_PM_OPS(pm860x_pm_ops, pm860x_suspend, pm860x_resume);
static struct i2c_driver pm860x_driver = {
.driver = {
.name = "88PM860x",
.owner = THIS_MODULE,
.pm = &pm860x_pm_ops,
},
.probe = pm860x_probe,
.remove = __devexit_p(pm860x_remove),

27
drivers/rtc/rtc-88pm860x.c
View File

@ -376,6 +376,9 @@ static int __devinit pm860x_rtc_probe(struct platform_device *pdev)
INIT_DELAYED_WORK(&info->calib_work, calibrate_vrtc_work);
schedule_delayed_work(&info->calib_work, VRTC_CALIB_INTERVAL);
#endif /* VRTC_CALIBRATION */
device_init_wakeup(&pdev->dev, 1);
return 0;
out_rtc:
free_irq(info->irq, info);
@ -401,10 +404,34 @@ static int __devexit pm860x_rtc_remove(struct platform_device *pdev)
return 0;
}
#ifdef CONFIG_PM_SLEEP
static int pm860x_rtc_suspend(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
if (device_may_wakeup(dev))
chip->wakeup_flag |= 1 << PM8607_IRQ_RTC;
return 0;
}
static int pm860x_rtc_resume(struct device *dev)
{
struct platform_device *pdev = to_platform_device(dev);
struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
if (device_may_wakeup(dev))
chip->wakeup_flag &= ~(1 << PM8607_IRQ_RTC);
return 0;
}
#endif
static SIMPLE_DEV_PM_OPS(pm860x_rtc_pm_ops, pm860x_rtc_suspend, pm860x_rtc_resume);
static struct platform_driver pm860x_rtc_driver = {
.driver = {
.name = "88pm860x-rtc",
.owner = THIS_MODULE,
.pm = &pm860x_rtc_pm_ops,
},
.probe = pm860x_rtc_probe,
.remove = __devexit_p(pm860x_rtc_remove),

1
include/linux/mfd/88pm860x.h
View File

@ -311,6 +311,7 @@ struct pm860x_chip {
int core_irq;
unsigned char chip_version;
unsigned int wakeup_flag;
};
enum {