target/linux/goldfish/patches-2.6.30/0068-PM-Enable-early-suspend-through-sys-power-state.patch

   1 From 7b236e69bb4403f20fbdef81907d46b4d32d4af8 Mon Sep 17 00:00:00 2001
   2 From: =?utf-8?q?Arve=20Hj=C3=B8nnev=C3=A5g?= <arve@android.com>
   3 Date: Thu, 9 Oct 2008 19:17:11 -0700
   4 Subject: [PATCH 068/134] PM: Enable early suspend through /sys/power/state
   5
   6 If EARLYSUSPEND is enabled then writes to /sys/power/state no longer
   7 blocks, and the kernel will try to enter the requested state every
   8 time no wakelocks are held. Write "on" to resume normal operation.
   9 ---
  10  kernel/power/main.c |   14 ++++++++++++++
  11  1 files changed, 14 insertions(+), 0 deletions(-)
  12
  13 --- a/kernel/power/main.c
  14 +++ b/kernel/power/main.c
  15 @@ -408,6 +408,9 @@ static void suspend_finish(void)
  16
  17
  18  static const char * const pm_states[PM_SUSPEND_MAX] = {
  19 +#ifdef CONFIG_EARLYSUSPEND
  20 +       [PM_SUSPEND_ON]         = "on",
  21 +#endif
  22         [PM_SUSPEND_STANDBY]    = "standby",
  23         [PM_SUSPEND_MEM]        = "mem",
  24  };
  25 @@ -525,7 +528,11 @@ static ssize_t state_store(struct kobjec
  26                            const char *buf, size_t n)
  27  {
  28  #ifdef CONFIG_SUSPEND
  29 +#ifdef CONFIG_EARLYSUSPEND
  30 +       suspend_state_t state = PM_SUSPEND_ON;
  31 +#else
  32         suspend_state_t state = PM_SUSPEND_STANDBY;
  33 +#endif
  34         const char * const *s;
  35  #endif
  36         char *p;
  37 @@ -547,8 +554,15 @@ static ssize_t state_store(struct kobjec
  38                         break;
  39         }
  40         if (state < PM_SUSPEND_MAX && *s)
  41 +#ifdef CONFIG_EARLYSUSPEND
  42 +               if (state == PM_SUSPEND_ON || valid_state(state)) {
  43 +                       error = 0;
  44 +                       request_suspend_state(state);
  45 +               }
  46 +#else
  47                 error = enter_state(state);
  48  #endif
  49 +#endif
  50
  51   Exit:
  52         return error ? error : n;