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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>
This commit is contained in:
Prashant Malani 2020-06-29 14:13:29 -07:00 committed by Enric Balletbo i Serra
parent 83cbc69df8
commit 20b736872f
1 changed files with 24 additions and 0 deletions
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24
drivers/platform/chrome/cros_ec_typec.c
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@ -720,11 +720,35 @@ unregister_ports:
return ret; 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 = { static struct platform_driver cros_typec_driver = {
.driver = { .driver = {
.name = DRV_NAME, .name = DRV_NAME,
.acpi_match_table = ACPI_PTR(cros_typec_acpi_id), .acpi_match_table = ACPI_PTR(cros_typec_acpi_id),
.of_match_table = of_match_ptr(cros_typec_of_match), .of_match_table = of_match_ptr(cros_typec_of_match),
.pm = &cros_typec_pm_ops,
}, },
.probe = cros_typec_probe, .probe = cros_typec_probe,
}; };