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| author | Prashant Malani <pmalani@chromium.org> | 2020-06-29 23:13:29 +0200 |
|---|---|---|
| committer | Enric Balletbo i Serra <enric.balletbo@collabora.com> | 2020-06-30 16:35:16 +0200 |
| commit | 20b736872f7f324438649a277ec711a646ce8e8d (patch) | |
| tree | d9df1151145e1d90c08371b23c2e978f34e4874c /drivers/platform | |
| parent | platform/chrome: cros_ec_typec: Use workqueue for port update (diff) | |
| download | linux-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')
| -rw-r--r-- | drivers/platform/chrome/cros_ec_typec.c | 24 |
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, }; |