linux-kernel - Re: [PATCH v12 10/10] drm/bridge: it6505: Register Type C mode switches

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Date:   Tue, 21 Feb 2023 13:54:56 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Pin-yen Lin <treapking@...omium.org>
Cc:     Andrzej Hajda <andrzej.hajda@...el.com>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Robert Foss <rfoss@...nel.org>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Jonas Karlman <jonas@...boo.se>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Daniel Scally <djrscally@...il.com>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        Prashant Malani <pmalani@...omium.org>,
        Benson Leung <bleung@...omium.org>,
        Guenter Roeck <groeck@...omium.org>,
        linux-kernel@...r.kernel.org, Hsin-Yi Wang <hsinyi@...omium.org>,
        Marek Vasut <marex@...x.de>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        dri-devel@...ts.freedesktop.org, Xin Ji <xji@...logixsemi.com>,
        Lyude Paul <lyude@...hat.com>,
        Allen Chen <allen.chen@....com.tw>, devicetree@...r.kernel.org,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Nícolas F . R . A . Prado 
        <nfraprado@...labora.com>, chrome-platform@...ts.linux.dev,
        Javier Martinez Canillas <javierm@...hat.com>,
        linux-acpi@...r.kernel.org, Stephen Boyd <swboyd@...omium.org>
Subject: Re: [PATCH v12 10/10] drm/bridge: it6505: Register Type C mode
 switches

On Tue, Feb 21, 2023 at 05:50:54PM +0800, Pin-yen Lin wrote:
> Register USB Type-C mode switches when the "mode-switch" property and
> relevant port are available in Device Tree. Configure the "lane_swap"
> state based on the entered alternate mode for a specific Type-C
> connector, which ends up updating the lane swap registers of the it6505
> chip.

...

> +static void it6505_typec_ports_update(struct it6505 *it6505)
> +{
> +	int i;

unsigned?

(and just note that here you have already blank line which is good)

> +	/* Check if both ports available and do nothing to retain the current one */
> +	if (it6505->port_data[0].dp_connected && it6505->port_data[1].dp_connected)
> +		return;
> +
> +	for (i = 0; i < 2; i++) {
> +		if (it6505->port_data[i].dp_connected)
> +			it6505->lane_swap = it6505->port_data[i].lane_swap;
> +	}
> +}


,,,

> +	it6505->port_data[port->port_num].dp_connected =
> +		state->alt && state->alt->svid == USB_TYPEC_DP_SID &&
> +		state->alt->mode == USB_TYPEC_DP_MODE;

Split first parameter?

...

> +	it6505->port_data = devm_kcalloc(
> +		dev, switch_desc->num_typec_switches,

Strange indentation.

> +		sizeof(struct it6505_typec_port_data), GFP_KERNEL);

> +

Redundant blank line.

> +	if (!it6505->port_data) {
> +		ret = -ENOMEM;
> +		goto unregister_mux;
> +	}

...

> +		num_lanes = fwnode_property_count_u32(fwnode, "data-lanes");
> +
> +		if (num_lanes < 0) {
> +			dev_err(dev,
> +				"Error on getting data lanes count from %pfwP: %d\n",
> +				fwnode, num_lanes);
> +			ret = num_lanes;
> +			goto unregister_mux;
> +		}

Same two comments as per previous patch of similar semantics.

-- 
With Best Regards,
Andy Shevchenko