Chris,
Here's the initial patch (vs testing kernel) for #6010 to provide an
interface that OHM can use to enable/disable wakeup events. It still
needs error handling for the ec_cmd() calls but other than that it is
ready to be tested.
Tnx,
~Deepak
--
Expose OLPC EC wakeup event mask to user space via sysfs files
in /sys/power/wakeup_events, with one file per event type.
Signed-off-by: Deepak Saxena <[EMAIL PROTECTED]>
---
arch/x86/kernel/olpc-pm.c | 67 +++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 67 insertions(+), 0 deletions(-)
diff --git a/arch/x86/kernel/olpc-pm.c b/arch/x86/kernel/olpc-pm.c
index e99a464..7e5c0ff 100644
--- a/arch/x86/kernel/olpc-pm.c
+++ b/arch/x86/kernel/olpc-pm.c
@@ -681,6 +681,72 @@ static struct attribute_group olpc_attrs = {
.attrs = olpc_attributes,
};
+static ssize_t wackup_event_show(struct kobject *s, struct kobj_attribute
*attr, char *buf);
+static ssize_t wackup_event_store(struct kobject *s, struct kobj_attribute
*attr, const char *buf, size_t n);
+
+static struct kobj_attribute wackup_event_attr[] = {
+ __ATTR(gamekey, 0600, wackup_event_show, wackup_event_store),
+ __ATTR(battery_state, 0600, wackup_event_show, wackup_event_store),
+ __ATTR(battery_soc, 0600, wackup_event_show, wackup_event_store),
+ __ATTR(battery_error, 0600, wackup_event_show, wackup_event_store),
+ __ATTR(ebook_mode_change, 0600, wackup_event_show, wackup_event_store),
+ __ATTR(wlan, 0600, wackup_event_show, wackup_event_store),
+ __ATTR(ac_power, 0600, wackup_event_show, wackup_event_store),
+};
+
+static DEFINE_RWLOCK(wackup_event_lock);
+
+static ssize_t wackup_event_show(struct kobject *s, struct kobj_attribute
*attr, char *buf)
+{
+ u8 data;
+ unsigned char shift = attr - wackup_event_attr;
+
+ read_lock(&wackup_event_lock);
+ olpc_ec_cmd(EC_READ_SCI_MASK, NULL, 0, &data, 1);
+ read_unlock(&wackup_event_lock);
+
+ return sprintf(buf, "%d\n", (data >> shift) & 1);
+}
+
+static ssize_t wackup_event_store(struct kobject *s, struct kobj_attribute
*attr, const char *buf, size_t n)
+{
+ u8 data;
+ unsigned enabled;
+ unsigned char shift = attr - wackup_event_attr;
+
+ if (sscanf(buf, "%d\n", &enabled) != 1)
+ return -EINVAL;
+
+ write_lock(&wackup_event_lock);
+ olpc_ec_cmd(EC_READ_SCI_MASK, NULL, 0, &data, 1);
+
+ if (enabled)
+ data |= 1 << shift;
+ else
+ data &= ~(1 << shift);
+
+ olpc_ec_cmd(EC_WRITE_SCI_MASK, &data, 1, NULL, 0);
+ write_unlock(&wackup_event_lock);
+
+ return n;
+}
+
+static struct attribute * olpc_wackup_event_attributes[] = {
+ &wackup_event_attr[0].attr,
+ &wackup_event_attr[1].attr,
+ &wackup_event_attr[2].attr,
+ &wackup_event_attr[3].attr,
+ &wackup_event_attr[4].attr,
+ &wackup_event_attr[5].attr,
+ &wackup_event_attr[6].attr,
+ NULL
+};
+
+static struct attribute_group olpc_wackup_event_attrs = {
+ .attrs = olpc_wackup_event_attributes,
+ .name = "wakeup_events"
+};
+
static int __init alloc_inputdevs(void)
{
int ret = -ENOMEM;
@@ -848,6 +914,7 @@ static int __init olpc_pm_init(void)
suspend_set_ops(&olpc_pm_ops);
sysfs_create_group(power_kobj, &olpc_attrs);
+ sysfs_create_group(power_kobj, &olpc_wackup_event_attrs);
return 0;
}
--
Deepak Saxena <[EMAIL PROTECTED]>
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