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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20100804202232.GA4276@srcf.ucam.org \
--to=mjg59@srcf.ucam.org \
--cc=linux-acpi@vger.kernel.org \
--cc=rajkumar278@hotmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.