From: Florian Fainelli <f.fainelli@gmail.com>
To: linux-kernel@vger.kernel.org
Cc: Florian Fainelli <f.fainelli@gmail.com>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
Alexandre Belloni <alexandre.belloni@free-electrons.com>,
"Rafael J. Wysocki" <rafael@kernel.org>,
Ulf Hansson <ulf.hansson@linaro.org>,
Daniel Lezcano <daniel.lezcano@linaro.org>,
linux-pm <linux-pm@vger.kernel.org>,
Thibaud Cornic <thibaud_cornic@sigmadesigns.com>,
JB <jb_lescher@sigmadesigns.com>, Mason <slash.tmp@free.fr>,
Kevin Hilman <khilman@kernel.org>, Pavel Machek <pavel@ucw.cz>,
Linux ARM <linux-arm-kernel@lists.infradead.org>
Subject: [PATCH v4] PM / suspend: Export pm_suspend_target_state
Date: Mon, 17 Jul 2017 17:19:25 -0700 [thread overview]
Message-ID: <20170718001925.25286-1-f.fainelli@gmail.com> (raw)
In-Reply-To: <20170717221059.6523-1-f.fainelli@gmail.com>
Have the core suspend/resume framework store the system-wide suspend
state (suspend_state_t) we are about to enter, and expose it to drivers
via pm_suspend_target_state in order to retrieve that. The state is
assigned in suspend_devices_and_enter().
This is useful for platform specific drivers that may need to take a
slightly different suspend/resume path based on the system's
suspend/resume state being entered.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
Changes in v4:
- clear pm_suspend_target_state in Close label
Changes in v3:
- just export pm_suspend_target_state without a helper function
Changes in v2:
- rename platform_suspend_target_state() -> suspend_target_state()
- directly export the suspend_state_t value and assign it in
suspend_devices_and_enter()
include/linux/suspend.h | 1 +
kernel/power/suspend.c | 5 +++++
2 files changed, 6 insertions(+)
diff --git a/include/linux/suspend.h b/include/linux/suspend.h
index 0b1cf32edfd7..2159f6841768 100644
--- a/include/linux/suspend.h
+++ b/include/linux/suspend.h
@@ -427,6 +427,7 @@ extern int unregister_pm_notifier(struct notifier_block *nb);
/* drivers/base/power/wakeup.c */
extern bool events_check_enabled;
extern unsigned int pm_wakeup_irq;
+extern suspend_state_t pm_suspend_target_state;
extern bool pm_wakeup_pending(void);
extern void pm_system_wakeup(void);
diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c
index 3ecf275d7e44..d0c0b96c2383 100644
--- a/kernel/power/suspend.c
+++ b/kernel/power/suspend.c
@@ -47,6 +47,8 @@ const char *mem_sleep_states[PM_SUSPEND_MAX];
suspend_state_t mem_sleep_current = PM_SUSPEND_FREEZE;
static suspend_state_t mem_sleep_default = PM_SUSPEND_MEM;
+suspend_state_t pm_suspend_target_state;
+EXPORT_SYMBOL_GPL(pm_suspend_target_state);
unsigned int pm_suspend_global_flags;
EXPORT_SYMBOL_GPL(pm_suspend_global_flags);
@@ -456,6 +458,8 @@ int suspend_devices_and_enter(suspend_state_t state)
if (!sleep_state_supported(state))
return -ENOSYS;
+ pm_suspend_target_state = state;
+
error = platform_suspend_begin(state);
if (error)
goto Close;
@@ -485,6 +489,7 @@ int suspend_devices_and_enter(suspend_state_t state)
Close:
platform_resume_end(state);
+ pm_suspend_target_state = PM_SUSPEND_ON;
return error;
Recover_platform:
--
2.9.3
next prev parent reply other threads:[~2017-07-18 0:19 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20170622085102.mpk7vxodpgxtrlfd@piout.net>
2017-06-23 1:08 ` [RFC 0/2] PM / suspend: Add platform_suspend_target_state() Florian Fainelli
2017-06-23 1:08 ` [RFC 1/2] " Florian Fainelli
2017-06-29 23:00 ` Rafael J. Wysocki
2017-07-12 18:08 ` Florian Fainelli
2017-07-14 22:16 ` Rafael J. Wysocki
2017-07-15 6:28 ` Pavel Machek
2017-07-15 12:17 ` Rafael J. Wysocki
2017-07-15 16:46 ` Pavel Machek
2017-07-15 17:20 ` Florian Fainelli
2017-07-15 18:33 ` Alexandre Belloni
2017-07-06 3:18 ` Pavel Machek
2017-07-16 13:41 ` Alexandre Belloni
2017-07-16 15:35 ` Florian Fainelli
2017-07-15 23:24 ` Rafael J. Wysocki
2017-07-15 23:34 ` Mason
2017-07-15 23:38 ` Rafael J. Wysocki
2017-07-16 2:36 ` Florian Fainelli
2017-07-16 10:22 ` Rafael J. Wysocki
2017-07-16 13:38 ` Alexandre Belloni
2017-07-16 18:24 ` Pavel Machek
2017-07-16 15:41 ` Florian Fainelli
2017-07-15 23:29 ` Rafael J. Wysocki
2017-07-06 3:17 ` Pavel Machek
2017-07-16 10:28 ` Rafael J. Wysocki
2017-07-16 18:22 ` Pavel Machek
2017-06-23 1:08 ` [RFC 2/2] soc: bcm: brcmstb: PM: Implement target_state callback Florian Fainelli
2017-06-29 23:04 ` Rafael J. Wysocki
2017-07-16 2:36 ` [PATCH 0/2] PM / suspend: Add platform_suspend_target_state() Florian Fainelli
2017-07-16 2:36 ` [PATCH 1/2] " Florian Fainelli
2017-07-06 3:18 ` Pavel Machek
2017-07-16 15:41 ` Florian Fainelli
2017-07-16 10:30 ` Rafael J. Wysocki
2017-07-16 2:36 ` [PATCH 2/2] soc: bcm: brcmstb: PM: Implement target_state callback Florian Fainelli
2017-07-17 20:06 ` [PATCH v2] PM / suspend: Add suspend_target_state() Florian Fainelli
2017-07-17 20:16 ` Pavel Machek
2017-07-17 21:03 ` Rafael J. Wysocki
2017-07-17 21:21 ` Florian Fainelli
2017-07-20 8:03 ` Pavel Machek
2017-07-17 22:10 ` [PATCH v3] PM / suspend: Export pm_suspend_target_state Florian Fainelli
2017-07-17 23:24 ` Rafael J. Wysocki
2017-07-18 0:19 ` Florian Fainelli [this message]
2017-07-24 20:55 ` [PATCH v4] " Rafael J. Wysocki
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=20170718001925.25286-1-f.fainelli@gmail.com \
--to=f.fainelli@gmail.com \
--cc=alexandre.belloni@free-electrons.com \
--cc=daniel.lezcano@linaro.org \
--cc=jb_lescher@sigmadesigns.com \
--cc=khilman@kernel.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-pm@vger.kernel.org \
--cc=pavel@ucw.cz \
--cc=rafael@kernel.org \
--cc=rjw@rjwysocki.net \
--cc=slash.tmp@free.fr \
--cc=thibaud_cornic@sigmadesigns.com \
--cc=ulf.hansson@linaro.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).