linux-kernel - Re: [PATCH v3 3/5] platform/chrome: cros_ec_proto: Introduce cros_ec_cmd

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Date: Tue, 11 Jun 2024 11:35:39 +0000
From: Tzung-Bi Shih <tzungbi@...nel.org>
To: Thomas Weißschuh <linux@...ssschuh.net>
Cc: Benson Leung <bleung@...omium.org>, Guenter Roeck <groeck@...omium.org>,
	Sebastian Reichel <sre@...nel.org>,
	Thomas Weißschuh <thomas@...ssschuh.net>,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	Len Brown <lenb@...nel.org>, Robert Moore <robert.moore@...el.com>,
	chrome-platform@...ts.linux.dev, linux-kernel@...r.kernel.org,
	linux-pm@...r.kernel.org,
	Mario Limonciello <mario.limonciello@....com>,
	Dustin Howett <dustin@...ett.net>,
	Stephen Horvath <s.horvath@...look.com.au>,
	Rajas Paranjpe <paranjperajas@...il.com>,
	linux-acpi@...r.kernel.org, acpica-devel@...ts.linux.dev,
	Matt Hartley <matt.hartley@...il.com>
Subject: Re: [PATCH v3 3/5] platform/chrome: cros_ec_proto: Introduce
 cros_ec_cmd_versions()

On Mon, Jun 10, 2024 at 05:51:08PM +0200, Thomas Weißschuh wrote:
> +/**
> + * cros_ec_cmd_versions - Get supported version mask.

I guess we would like to call it something like "cros_ec_get_cmd_versions".

> + *
> + * @ec_dev: EC device
> + * @cmd: Command to test
> + *
> + * Return: version mask on success, negative error number on failure.
> + */
> +int cros_ec_cmd_versions(struct cros_ec_device *ec_dev, u16 cmd)

Could it support a "version" parameter as existing EC_CMD_GET_CMD_VERSIONS
usages use both versions?  An `u16 cmd` parameter and down-cast to u8 for v0
should be fine. (ec_params_get_cmd_versions vs. ec_params_get_cmd_versions_v1)