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 f2e0cbc5ab646c76267731f1a1280041ba50c1ca..f9ce1835e4d71c7a2cf3f53231fd1703e3386b7a 100644 (file)
--- a/drivers/input/misc/88pm860x_onkey.c
+++ b/drivers/input/misc/88pm860x_onkey.c
@@ -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),

diff --git a/drivers/mfd/88pm860x-i2c.c b/drivers/mfd/88pm860x-i2c.c
index f93dd9571c3c81e8b44f26dc51d54b0901039cd6..b2cfdc458561fb5fcba59a6dc11e0a9b70c6b55a 100644 (file)
--- a/drivers/mfd/88pm860x-i2c.c
+++ b/drivers/mfd/88pm860x-i2c.c
@@ -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),

diff --git a/drivers/rtc/rtc-88pm860x.c b/drivers/rtc/rtc-88pm860x.c
index f04761e6622dddcc34a3e860b7559ea410a9d113..afee0e8ae714426ad787fbe1be7d372c888e87f0 100644 (file)
--- a/drivers/rtc/rtc-88pm860x.c
+++ b/drivers/rtc/rtc-88pm860x.c
@@ -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),

diff --git a/include/linux/mfd/88pm860x.h b/include/linux/mfd/88pm860x.h
index 92be3476c9f5560d8623ac5cae738e1471525f22..8b583f3f7926bc6c426f4355b33a3fa091aecbf6 100644 (file)
--- a/include/linux/mfd/88pm860x.h
+++ b/include/linux/mfd/88pm860x.h
@@ -311,6 +311,7 @@ struct pm860x_chip {
        int                     core_irq;
        unsigned char           chip_version;
 
+       unsigned int            wakeup_flag;
 };
 
 enum {