On Fri, Jun 12, 2020 at 10:59:41AM +0800, Ramuthevar,Vadivel MuruganX wrote:
> From: Ramuthevar Vadivel Murugan <vadivel.muruganx.ramuthevar@xxxxxxxxxxxxxxx>
>
> Add support for USB PHY on Intel LGM SoC.
Thank you for an update, looks pretty much good, my comments below.
...
> +static int get_flipped(struct tca_apb *ta, bool *flipped)
> +{
> + union extcon_property_value property;
> + int ret;
> +
> + ret = extcon_get_property(ta->phy.edev, EXTCON_USB_HOST,
> + EXTCON_PROP_USB_TYPEC_POLARITY, &property);
> + if (ret) {
> + dev_err(ta->phy.dev, "no polarity property from extcon\n");
(1)
> + return ret;
> + }
> +
> + *flipped = property.intval;
> +
> + return ret;
> +}
...
> + ret = get_flipped(ta, &flipped);
> + if (ret)
> + dev_err(ta->phy.dev, "no polarity property from extcon\n");
You already has a message in (1). You should decide which one to leave.
But note, if it's a fatal error, you have to return here, otherwise, if you
decide to leave message here, it should be not on error level.
> + connected = extcon_get_state(ta->phy.edev, EXTCON_USB_HOST);
> + if (connected == ta->connected)
> + return;
> +
> + ta->connected = connected;
> + if (connected) {
> + val = TCPC_VALID | FIELD_PREP(TCPC_MUX_CTL, MUX_USB);
> + if (flipped)
> + val |= TCPC_FLIPPED;
> + dev_info(ta->phy.dev, "connected%s\n", flipped ? " flipped" : "");
> + } else {
> + val = TCPC_DISCONN;
> + dev_info(ta->phy.dev, "disconnected\n");
> + }
> +
> + writel(val, ta->phy.io_priv + TCPC_OFFSET);
> +
> + if (ta->phy.set_vbus(&ta->phy, connected))
> + dev_err(ta->phy.dev, "failed to set VBUS\n");
Please, split it to
ret = ...;
if (ret)
> +}
...
> +static int vbus_notifier(struct notifier_block *nb,
> + unsigned long event, void *ptr)
Consider to put it on one line (you can also shrink the names of unused
parameters.
> +{
> + return NOTIFY_DONE;
> +}
--
With Best Regards,
Andy Shevchenko
