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>
diff --git a/drivers/input/misc/88pm860x_onkey.c b/drivers/input/misc/88pm860x_onkey.c
index f2e0cbc..f9ce183 100644
--- a/drivers/input/misc/88pm860x_onkey.c
+++ b/drivers/input/misc/88pm860x_onkey.c
@@ -105,6 +105,8 @@
}
platform_set_drvdata(pdev, info);
+ device_init_wakeup(&pdev->dev, 1);
+
return 0;
out_irq:
@@ -129,10 +131,34 @@
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),
diff --git a/drivers/mfd/88pm860x-i2c.c b/drivers/mfd/88pm860x-i2c.c
index f93dd95..b2cfdc4 100644
--- a/drivers/mfd/88pm860x-i2c.c
+++ b/drivers/mfd/88pm860x-i2c.c
@@ -334,10 +334,35 @@
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),
diff --git a/drivers/rtc/rtc-88pm860x.c b/drivers/rtc/rtc-88pm860x.c
index f04761e..afee0e8 100644
--- a/drivers/rtc/rtc-88pm860x.c
+++ b/drivers/rtc/rtc-88pm860x.c
@@ -376,6 +376,9 @@
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 @@
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),
diff --git a/include/linux/mfd/88pm860x.h b/include/linux/mfd/88pm860x.h
index 92be3476..8b583f3 100644
--- a/include/linux/mfd/88pm860x.h
+++ b/include/linux/mfd/88pm860x.h
@@ -311,6 +311,7 @@
int core_irq;
unsigned char chip_version;
+ unsigned int wakeup_flag;
};
enum {