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From 7b236e69bb4403f20fbdef81907d46b4d32d4af8 Mon Sep 17 00:00:00 2001
From: =?utf-8?q?Arve=20Hj=C3=B8nnev=C3=A5g?= <arve@android.com>
Date: Thu, 9 Oct 2008 19:17:11 -0700
Subject: [PATCH 068/134] PM: Enable early suspend through /sys/power/state
If EARLYSUSPEND is enabled then writes to /sys/power/state no longer
blocks, and the kernel will try to enter the requested state every
time no wakelocks are held. Write "on" to resume normal operation.
---
kernel/power/main.c | 14 ++++++++++++++
1 files changed, 14 insertions(+), 0 deletions(-)
--- a/kernel/power/main.c
+++ b/kernel/power/main.c
@@ -408,6 +408,9 @@ static void suspend_finish(void)
static const char * const pm_states[PM_SUSPEND_MAX] = {
+#ifdef CONFIG_EARLYSUSPEND
+ [PM_SUSPEND_ON] = "on",
+#endif
[PM_SUSPEND_STANDBY] = "standby",
[PM_SUSPEND_MEM] = "mem",
};
@@ -525,7 +528,11 @@ static ssize_t state_store(struct kobjec
const char *buf, size_t n)
{
#ifdef CONFIG_SUSPEND
+#ifdef CONFIG_EARLYSUSPEND
+ suspend_state_t state = PM_SUSPEND_ON;
+#else
suspend_state_t state = PM_SUSPEND_STANDBY;
+#endif
const char * const *s;
#endif
char *p;
@@ -547,8 +554,15 @@ static ssize_t state_store(struct kobjec
break;
}
if (state < PM_SUSPEND_MAX && *s)
+#ifdef CONFIG_EARLYSUSPEND
+ if (state == PM_SUSPEND_ON || valid_state(state)) {
+ error = 0;
+ request_suspend_state(state);
+ }
+#else
error = enter_state(state);
#endif
+#endif
Exit:
return error ? error : n;
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