From: Alexandre Belloni <alexandre.belloni@free-electrons.com>
To: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Pavel Machek <pavel@ucw.cz>,
Boris Brezillon <boris.brezillon@free-electrons.com>,
Nicolas Ferre <nicolas.ferre@atmel.com>,
linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: PM: knowing the system state in the device callback
Date: Mon, 16 Mar 2015 20:17:42 +0100 [thread overview]
Message-ID: <20150316191742.GI4560@piout.net> (raw)
Hi,
I'm trying to get rid of at91_suspend_entering_slow_clock() which is
exposing the platform suspend_state_t to the devices. From what I
understand, whenever suspend_state_t is PM_SUSPEND_MEM or
PM_SUSPEND_STANDBY, the pm_message_t passed to the device driver is
always PM_EVENT_SUSPEND.
The requirement is to know whether we are going to cut the master clock
and in that case, avoid calling enable_irq_wake() because we will not be
able to wakeup from the device.
Is there a better way to do that? Or should I implement a similar
function in the pm core (which I guess would already be there if
really needed)?
Regards,
--
Alexandre Belloni, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
WARNING: multiple messages have this Message-ID (diff)
From: alexandre.belloni@free-electrons.com (Alexandre Belloni)
To: linux-arm-kernel@lists.infradead.org
Subject: PM: knowing the system state in the device callback
Date: Mon, 16 Mar 2015 20:17:42 +0100 [thread overview]
Message-ID: <20150316191742.GI4560@piout.net> (raw)
Hi,
I'm trying to get rid of at91_suspend_entering_slow_clock() which is
exposing the platform suspend_state_t to the devices. From what I
understand, whenever suspend_state_t is PM_SUSPEND_MEM or
PM_SUSPEND_STANDBY, the pm_message_t passed to the device driver is
always PM_EVENT_SUSPEND.
The requirement is to know whether we are going to cut the master clock
and in that case, avoid calling enable_irq_wake() because we will not be
able to wakeup from the device.
Is there a better way to do that? Or should I implement a similar
function in the pm core (which I guess would already be there if
really needed)?
Regards,
--
Alexandre Belloni, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
next reply other threads:[~2015-03-16 19:17 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-16 19:17 Alexandre Belloni [this message]
2015-03-16 19:17 ` PM: knowing the system state in the device callback Alexandre Belloni
2015-03-16 19:52 ` Boris Brezillon
2015-03-16 19:52 ` Boris Brezillon
2015-03-16 20:32 ` Sylvain Rochet
2015-03-16 20:32 ` Sylvain Rochet
2015-03-17 8:38 ` Boris Brezillon
2015-03-17 8:38 ` Boris Brezillon
2015-03-17 10:46 ` Sylvain Rochet
2015-03-17 10:46 ` Sylvain Rochet
2015-03-17 12:27 ` Gregory CLEMENT
2015-03-17 12:27 ` Gregory CLEMENT
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=20150316191742.GI4560@piout.net \
--to=alexandre.belloni@free-electrons.com \
--cc=boris.brezillon@free-electrons.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pm@vger.kernel.org \
--cc=nicolas.ferre@atmel.com \
--cc=pavel@ucw.cz \
--cc=rjw@rjwysocki.net \
/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.