Messages in this thread Patch in this message | | | From | Prashant Malani <> | Subject | [PATCH 2/2] platform/chrome: cros_ec_typec: Add PM support | Date | Fri, 26 Jun 2020 21:58:41 -0700 |
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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> --- drivers/platform/chrome/cros_ec_typec.c | 34 +++++++++++++++++++++++++ 1 file changed, 34 insertions(+)
diff --git a/drivers/platform/chrome/cros_ec_typec.c b/drivers/platform/chrome/cros_ec_typec.c index 630170fb2cbe..68f15a47450c 100644 --- a/drivers/platform/chrome/cros_ec_typec.c +++ b/drivers/platform/chrome/cros_ec_typec.c @@ -725,11 +725,45 @@ static int cros_typec_probe(struct platform_device *pdev) return ret; } +#ifdef CONFIG_PM_SLEEP + +static int 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 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) +}; + +#define DEV_PM_OPS (&cros_typec_pm_ops) + +#else + +#define DEV_PM_OPS NULL + +#endif /* CONFIG_PM_SLEEP */ + 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 = DEV_PM_OPS, }, .probe = cros_typec_probe, }; -- 2.27.0.212.ge8ba1cc988-goog
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