From: aaron lwe <aaron.lwe@gmail.com>
To: linux-acpi@vger.kernel.org
Subject: any way to evaluate a device's _PS0 method when its power state is at D0?
Date: Thu, 19 May 2011 18:06:47 +0800 [thread overview]
Message-ID: <BANLkTim-sswOsPZZzH7QOWQgqpwJ_EzeNQ@mail.gmail.com> (raw)
Hi,
On init, a device's power state is set by acpi_bus_init_power, it got
the information either via power_resources or via _PSC.
My BIOS vendor here did this simply as follows:
Device (xx)
{
Name (ABPS, 0)
Method (_PSC, 0, NotSerialized)
{
Return (ABPS)
}
}
So on init, this device's power state will be set to D0 due to ABPS is
0, but its _PS0 never get called.
If later I want to evaluate its _PS0 control method, what should I do?
acpi_bus_set_power will return if it found the set state is the same
with the current state.
Thanks,
Aaron
next reply other threads:[~2011-05-19 10:06 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-19 10:06 aaron lwe [this message]
2011-05-19 12:42 ` any way to evaluate a device's _PS0 method when its power state is at D0? Matthew Garrett
2011-05-19 15:05 ` aaron lwe
2011-05-19 15:14 ` Matthew Garrett
2011-05-19 15:28 ` aaron lwe
2011-05-19 15:45 ` 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=BANLkTim-sswOsPZZzH7QOWQgqpwJ_EzeNQ@mail.gmail.com \
--to=aaron.lwe@gmail.com \
--cc=linux-acpi@vger.kernel.org \
/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.