From: Matthew Garrett <mjg59@srcf.ucam.org>
To: Raj Kumar <rajkumar278@hotmail.com>
Cc: linux-acpi@vger.kernel.org
Subject: Re: Question regarding linux acpi
Date: Wed, 4 Aug 2010 21:22:32 +0100 [thread overview]
Message-ID: <20100804202232.GA4276@srcf.ucam.org> (raw)
In-Reply-To: <BLU102-W81BE50E68610AAA92C33AEBAF0@phx.gbl>
On Thu, Aug 05, 2010 at 01:44:21AM +0530, Raj Kumar wrote:
> Does it mean that only bus driver code will handle all low power mode
> requests?
The bus code is responsible for calling the device-specific methods, but
the device-specific drivers will typically know nothing about ACPI.
They'll only know that the bus code asked them to enter a low-power mode
or that they got a wakeup event.
> peripherals are idle but not all peripherals belonging to bus then in that
> case
>
> does the bus handle the low power modes of peripherals?
Yes. All determination is done per-device. Check
Documentation/power/runtime_pm.txt.
--
Matthew Garrett | mjg59@srcf.ucam.org
next prev parent reply other threads:[~2010-08-04 20:22 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-04 15:51 Question regarding linux acpi Raj Kumar
2010-08-04 17:02 ` Matthew Garrett
[not found] ` <BLU102-W81BE50E68610AAA92C33AEBAF0@phx.gbl>
2010-08-04 20:22 ` Matthew Garrett [this message]
[not found] ` <BLU102-W14E1E8D6FA2F2A23C56E84EBAF0@phx.gbl>
2010-08-04 23:34 ` Matthew Garrett
2010-08-05 10:51 ` Raj Kumar
2010-08-05 11:55 ` Matthew Garrett
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