linux-kernel - Re: [PATCH v5 2/7] platform/chrome: cros_typec

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Message-ID: <Yvsm7qEiCpoYPeTS@google.com>
Date:   Tue, 16 Aug 2022 05:11:10 +0000
From:   Tzung-Bi Shih <tzungbi@...nel.org>
To:     Prashant Malani <pmalani@...omium.org>
Cc:     linux-kernel@...r.kernel.org, chrome-platform@...ts.linux.dev,
        bleung@...omium.org, Daisuke Nojiri <dnojiri@...omium.org>,
        "Dustin L. Howett" <dustin@...ett.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Guenter Roeck <groeck@...omium.org>,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        Lee Jones <lee.jones@...aro.org>,
        Sebastian Reichel <sebastian.reichel@...labora.com>,
        Tinghan Shen <tinghan.shen@...iatek.com>,
        Xiang wangx <wangxiang@...rlc.com>
Subject: Re: [PATCH v5 2/7] platform/chrome: cros_typec_switch: Add switch
 driver

On Mon, Aug 15, 2022 at 06:34:19AM +0000, Prashant Malani wrote:
> Introduce a driver to configure USB Type-C mode switches and retimers
> which are controlled by the Chrome OS EC (Embedded Controller).
> This allows Type-C port drivers, as well as alternate mode drivers to
> configure their relevant mode switches and retimers according to the
> Type-C state they want to achieve.

s/Chrome OS/ChromeOS/.

> diff --git a/drivers/platform/chrome/Kconfig b/drivers/platform/chrome/Kconfig
[...]
> +config CROS_TYPEC_SWITCH
> +	tristate "ChromeOS EC Type-C Switch Control"
> +	depends on MFD_CROS_EC_DEV && TYPEC && ACPI
> +	default MFD_CROS_EC_DEV
> +	help
> +	  If you say Y here, you get support for configuring the Chrome OS EC Type C
> +	  muxes and retimers.

s/Chrome OS/ChromeOS/.

Up to you, s/Type C/Type-C/g.

> diff --git a/drivers/platform/chrome/cros_typec_switch.c b/drivers/platform/chrome/cros_typec_switch.c
> new file mode 100644
> index 000000000000..0d319e315d57
> --- /dev/null
> +++ b/drivers/platform/chrome/cros_typec_switch.c
> @@ -0,0 +1,170 @@
> +// SPDX-License-Identifier: GPL-2.0-only
> +/*
> + * Copyright 2022 Google LLC
> + *
> + * This driver provides the ability to configure Type C muxes and retimers which are controlled by
> + * the Chrome OS EC.
> + */

s/Chrome OS/ChromeOS/.

> +static int cros_typec_register_switches(struct cros_typec_switch_data *sdata)
> +{
> +	struct cros_typec_port *port = NULL;
> +	struct device *dev = sdata->dev;
> +	struct fwnode_handle *fwnode;
> +	struct acpi_device *adev;
> +	unsigned long long index;
> +	int ret = 0;

`port` and `ret` don't need to be initialized.

> +MODULE_DESCRIPTION("Chrome OS EC Type C Switch control");

s/Chrome OS/ChromeOS/.