commit c40552bc82166adb21a1a7fcb1dc4e76352b1b79
author Kevin Hilman <khilman@deeprootsystems.com> Tue Oct 06 14:25:09 2009 -0700
committer Kevin Hilman <khilman@deeprootsystems.com> Wed Nov 11 14:42:27 2009 -0800
tree 3625838f286478e88ccc3a3be09b1c330149106c
parent 89139dce8a0060d97a46cebde570a8f55c314712

OMAP3: PM debug: allow runtime toggle of PM features

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>

arch/arm/mach-omap2/pm-debug.c

diff --git a/arch/arm/mach-omap2/pm-debug.c b/arch/arm/mach-omap2/pm-debug.c
index 7eb2c12..1725da3 100644
--- a/arch/arm/mach-omap2/pm-debug.c
+++ b/arch/arm/mach-omap2/pm-debug.c
@@ -527,6 +527,29 @@
 	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 @@
 
 		}
 
+	(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;