PM: Optional beeping during resume from suspend to RAM

[linux-2.6-omap-h63xx.git] / kernel / power / main.c

diff --git a/kernel/power/main.c b/kernel/power/main.c
index 32147b57c3bfb419f0950b7abafe88aa207984a5..c74a56436d8b010e7fcde9c912fa85dd01b21888 100644 (file)
--- a/kernel/power/main.c
+++ b/kernel/power/main.c
@@ -332,6 +332,27 @@ static ssize_t state_store(struct kset *kset, const char *buf, size_t n)
 
 power_attr(state);
 
+unsigned long s2ram_beep = 0;
+
+static ssize_t s2ram_beep_show(struct kset *kset, char *buf)
+{
+       return sprintf(buf, "%d\n", s2ram_beep);
+}
+
+static ssize_t
+s2ram_beep_store(struct kset *kset, const char *buf, size_t n)
+{
+       int val;
+
+       if (sscanf(buf, "%d", &val) > 0) {
+               s2ram_beep = val;
+               return n;
+       }
+       return -EINVAL;
+}
+
+power_attr(s2ram_beep);
+
 #ifdef CONFIG_PM_TRACE
 int pm_trace_enabled;
 
@@ -357,11 +378,13 @@ power_attr(pm_trace);
 static struct attribute * g[] = {
        &state_attr.attr,
        &pm_trace_attr.attr,
+       &s2ram_beep_attr.attr,
        NULL,
 };
 #else
 static struct attribute * g[] = {
        &state_attr.attr,
+       &s2ram_beep_attr.attr,
        NULL,
 };
 #endif /* CONFIG_PM_TRACE */