diff options
Diffstat (limited to 'drivers/platform/chrome/cros_ec_dev.c')
| -rw-r--r-- | drivers/platform/chrome/cros_ec_dev.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/drivers/platform/chrome/cros_ec_dev.c b/drivers/platform/chrome/cros_ec_dev.c index 20ce1c23fb5c..7c2622319211 100644 --- a/drivers/platform/chrome/cros_ec_dev.c +++ b/drivers/platform/chrome/cros_ec_dev.c @@ -21,6 +21,7 @@ #include <linux/mfd/core.h> #include <linux/module.h> #include <linux/platform_device.h> +#include <linux/pm.h> #include <linux/slab.h> #include <linux/uaccess.h> @@ -435,6 +436,10 @@ static int ec_device_probe(struct platform_device *pdev) if (cros_ec_check_features(ec, EC_FEATURE_MOTION_SENSE)) cros_ec_sensors_register(ec); + /* Take control of the lightbar from the EC. */ + if (ec_has_lightbar(ec)) + lb_manual_suspend_ctrl(ec, 1); + return 0; failed: @@ -446,6 +451,10 @@ static int ec_device_remove(struct platform_device *pdev) { struct cros_ec_dev *ec = dev_get_drvdata(&pdev->dev); + /* Let the EC take over the lightbar again. */ + if (ec_has_lightbar(ec)) + lb_manual_suspend_ctrl(ec, 0); + cros_ec_debugfs_remove(ec); cdev_del(&ec->cdev); @@ -459,9 +468,37 @@ static const struct platform_device_id cros_ec_id[] = { }; MODULE_DEVICE_TABLE(platform, cros_ec_id); +static int ec_device_suspend(struct device *dev) +{ + struct cros_ec_dev *ec = dev_get_drvdata(dev); + + if (ec_has_lightbar(ec)) + lb_suspend(ec); + + return 0; +} + +static int ec_device_resume(struct device *dev) +{ + struct cros_ec_dev *ec = dev_get_drvdata(dev); + + if (ec_has_lightbar(ec)) + lb_resume(ec); + + return 0; +} + +static const struct dev_pm_ops cros_ec_dev_pm_ops = { +#ifdef CONFIG_PM_SLEEP + .suspend = ec_device_suspend, + .resume = ec_device_resume, +#endif +}; + static struct platform_driver cros_ec_dev_driver = { .driver = { .name = "cros-ec-ctl", + .pm = &cros_ec_dev_pm_ops, }, .probe = ec_device_probe, .remove = ec_device_remove, |