lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

OMAP3: PM debug: allow runtime toggle of PM features

Browse Source 
Allow enable/disable of low-power states during idle.  To
enable low-power idle:

   echo 1 > /debug/pm_debug/sleep_while_idle

 to disable:

   echo 0 > /debug/pm_debug/sleep_while_idle

Also allow enable/disable of OFF-mode.  To enable:

   echo 1 > /debug/pm_debug/enable_off_mode

 to disable:

   echo 0 > /debug/pm_debug/enable_off_mode

Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
This commit is contained in:
Kevin Hilman
2009-10-06 14:25:09 -07:00
parent 89139dce8a
commit c40552bc82
4 changed files with 53 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

27
arch/arm/mach-omap2/pm-debug.c
View File

@@ -527,6 +527,29 @@ static int __init pwrdms_setup(struct powerdomain *pwrdm, void *dir)
return 0;
}
static int option_get(void *data, u64 *val)
{
u32 *option = data;
*val = *option;
return 0;
}
static int option_set(void *data, u64 val)
{
u32 *option = data;
*option = val;
if (option == &enable_off_mode)
omap3_pm_off_mode_enable(val);
return 0;
}
DEFINE_SIMPLE_ATTRIBUTE(pm_dbg_option_fops, option_get, option_set, "%llu\n");
static int __init pm_dbg_init(void)
{
int i;
@@ -569,6 +592,10 @@ static int __init pm_dbg_init(void)
}
(void) debugfs_create_file("enable_off_mode", S_IRUGO | S_IWUGO, d,
&enable_off_mode, &pm_dbg_option_fops);
(void) debugfs_create_file("sleep_while_idle", S_IRUGO | S_IWUGO, d,
&sleep_while_idle, &pm_dbg_option_fops);
pm_dbg_init_done = 1;
return 0;