linux-kernel - Re: [PATCH] x86: new Intel Atom SoC power management controller driver

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Message-ID: <5317F044.8080407@linux.intel.com>
Date:	Wed, 05 Mar 2014 19:49:24 -0800
From:	"H. Peter Anvin" <hpa@...ux.intel.com>
To:	"Li, Aubrey" <aubrey.li@...ux.intel.com>,
	Matthew Garrett <mjg59@...f.ucam.org>, mingo@...hat.com,
	tglx@...utronix.de, linux-kernel@...r.kernel.org,
	"alan@...ux.intel.com" <alan@...ux.intel.com>
Subject: Re: [PATCH] x86: new Intel Atom SoC power management controller driver

On 03/05/2014 07:31 PM, Li, Aubrey wrote:
> The Power Management Controller (PMC) controls many of the power
> management features present in the SoC. This driver provides
> interface to configure the Power Management Controller (PMC).
> 
> This driver exposes PMC device state and sleep state residency
> via debugfs for observation:
> 	/sys/kernel/debugfs/pmc_atom/dev_state
> 	/sys/kernel/debugfs/pmc_atom/sleep_state
> 
> This driver also provides a native power off function via PMC PCI
> IO port.
> 

What is the reason for putting this in debugfs?

	-hpa


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