linux-kernel - Re: [PATCH 1/2] drivers/misc: add a driver for HPS

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Message-ID: <20220218172019.GA3039@duo.ucw.cz>
Date:   Fri, 18 Feb 2022 18:20:19 +0100
From:   Pavel Machek <pavel@....cz>
To:     Sami Kyöstilä <skyostil@...omium.org>
Cc:     LKML <linux-kernel@...r.kernel.org>, dtor@...omium.org,
        evanbenn@...omium.org, arnd@...db.de, gregkh@...uxfoundation.org
Subject: Re: [PATCH 1/2] drivers/misc: add a driver for HPS

Hi!

> +config HPS_I2C
> +	tristate "ChromeOS HPS device support"
> +	depends on HID && I2C && PM
> +	help
> +	  Say Y here if you want to enable support for the ChromeOS
> +	  anti-snooping sensor (HPS), attached via I2C. The driver supports a
> +	  sensor connected to the I2C bus and exposes it as a character device.
> +	  To save power, the sensor is automatically powered down when no
> +	  clients are accessing it.
> +

We don't need to know about power management here; but it would be
good to have explanation what anti-snooping sensor actually does. Is
it camera detecting user or what?

Best regards,
								Pavel
								
-- 
http://www.livejournal.com/~pavelmachek

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