summaryrefslogtreecommitdiffstats
path: root/drivers/platform/chrome
diff options
context:
space:
mode:
authorPrashant Malani <pmalani@chromium.org>2020-06-29 23:13:29 +0200
committerEnric Balletbo i Serra <enric.balletbo@collabora.com>2020-06-30 16:35:16 +0200
commit20b736872f7f324438649a277ec711a646ce8e8d (patch)
treed9df1151145e1d90c08371b23c2e978f34e4874c /drivers/platform/chrome
parentplatform/chrome: cros_ec_typec: Use workqueue for port update (diff)
downloadlinux-20b736872f7f324438649a277ec711a646ce8e8d.tar.xz
linux-20b736872f7f324438649a277ec711a646ce8e8d.zip
platform/chrome: cros_ec_typec: Add PM support
Define basic suspend resume functions for cros-ec-typec. On suspend, we simply ensure that any pending port update work is completed, and on resume, we re-poll the port state to account for any changes/disconnections that might have occurred during suspend. Signed-off-by: Prashant Malani <pmalani@chromium.org> Reviewed-by: Guenter Roeck <groeck@chromium.org> Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Diffstat (limited to 'drivers/platform/chrome')
-rw-r--r--drivers/platform/chrome/cros_ec_typec.c24
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/platform/chrome/cros_ec_typec.c b/drivers/platform/chrome/cros_ec_typec.c
index 9901bf2a96c2..3eae01f4c9f7 100644
--- a/drivers/platform/chrome/cros_ec_typec.c
+++ b/drivers/platform/chrome/cros_ec_typec.c
@@ -720,11 +720,35 @@ unregister_ports:
return ret;
}
+static int __maybe_unused cros_typec_suspend(struct device *dev)
+{
+ struct cros_typec_data *typec = dev_get_drvdata(dev);
+
+ cancel_work_sync(&typec->port_work);
+
+ return 0;
+}
+
+static int __maybe_unused cros_typec_resume(struct device *dev)
+{
+ struct cros_typec_data *typec = dev_get_drvdata(dev);
+
+ /* Refresh port state. */
+ schedule_work(&typec->port_work);
+
+ return 0;
+}
+
+static const struct dev_pm_ops cros_typec_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(cros_typec_suspend, cros_typec_resume)
+};
+
static struct platform_driver cros_typec_driver = {
.driver = {
.name = DRV_NAME,
.acpi_match_table = ACPI_PTR(cros_typec_acpi_id),
.of_match_table = of_match_ptr(cros_typec_of_match),
+ .pm = &cros_typec_pm_ops,
},
.probe = cros_typec_probe,
};