From 20b736872f7f324438649a277ec711a646ce8e8d Mon Sep 17 00:00:00 2001 From: Prashant Malani Date: Mon, 29 Jun 2020 14:13:29 -0700 Subject: [PATCH] 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 Reviewed-by: Guenter Roeck Reviewed-by: Heikki Krogerus Signed-off-by: Enric Balletbo i Serra --- drivers/platform/chrome/cros_ec_typec.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) 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, };