On Thu, Jan 05, 2023 at 03:50:58PM +0800, Jun Nie wrote:
> Enable wakeup when pluging or unpluging USB cable. It is up to other
> components to hold system in active mode, such as display, so that
> user can receive the notification.
>
> Signed-off-by: Jun Nie <jun.nie@xxxxxxxxxx>
Reviewed-by: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx>
> ---
> drivers/usb/typec/tipd/core.c | 38 +++++++++++++++++++++++++++++++++++
> 1 file changed, 38 insertions(+)
>
> diff --git a/drivers/usb/typec/tipd/core.c b/drivers/usb/typec/tipd/core.c
> index 46a4d8b128f0..485b90c13078 100644
> --- a/drivers/usb/typec/tipd/core.c
> +++ b/drivers/usb/typec/tipd/core.c
> @@ -95,6 +95,7 @@ struct tps6598x {
> struct power_supply_desc psy_desc;
> enum power_supply_usb_type usb_type;
>
> + int wakeup;
> u16 pwr_status;
> };
>
> @@ -846,6 +847,12 @@ static int tps6598x_probe(struct i2c_client *client)
> i2c_set_clientdata(client, tps);
> fwnode_handle_put(fwnode);
>
> + tps->wakeup = device_property_read_bool(tps->dev, "wakeup-source");
> + if (tps->wakeup) {
> + device_init_wakeup(&client->dev, true);
> + enable_irq_wake(client->irq);
> + }
> +
> return 0;
>
> err_disconnect:
> @@ -870,6 +877,36 @@ static void tps6598x_remove(struct i2c_client *client)
> usb_role_switch_put(tps->role_sw);
> }
>
> +static int __maybe_unused tps6598x_suspend(struct device *dev)
> +{
> + struct i2c_client *client = to_i2c_client(dev);
> + struct tps6598x *tps = i2c_get_clientdata(client);
> +
> + if (tps->wakeup) {
> + disable_irq(client->irq);
> + enable_irq_wake(client->irq);
> + }
> +
> + return 0;
> +}
> +
> +static int __maybe_unused tps6598x_resume(struct device *dev)
> +{
> + struct i2c_client *client = to_i2c_client(dev);
> + struct tps6598x *tps = i2c_get_clientdata(client);
> +
> + if (tps->wakeup) {
> + disable_irq_wake(client->irq);
> + enable_irq(client->irq);
> + }
> +
> + return 0;
> +}
> +
> +static const struct dev_pm_ops tps6598x_pm_ops = {
> + SET_SYSTEM_SLEEP_PM_OPS(tps6598x_suspend, tps6598x_resume)
> +};
> +
> static const struct of_device_id tps6598x_of_match[] = {
> { .compatible = "ti,tps6598x", },
> { .compatible = "apple,cd321x", },
> @@ -886,6 +923,7 @@ MODULE_DEVICE_TABLE(i2c, tps6598x_id);
> static struct i2c_driver tps6598x_i2c_driver = {
> .driver = {
> .name = "tps6598x",
> + .pm = &tps6598x_pm_ops,
> .of_match_table = tps6598x_of_match,
> },
> .probe_new = tps6598x_probe,
> --
> 2.34.1
thanks,
--
heikki
