abx500-chargalg: Add new sysfs interface to get current charge status
Allow a user to check on AB8500 charging status from debugfs.
Signed-off-by: Lee Jones <lee.jones@linaro.org>
diff --git a/drivers/power/abx500_chargalg.c b/drivers/power/abx500_chargalg.c
index 7defb3e..f043c08 100644
--- a/drivers/power/abx500_chargalg.c
+++ b/drivers/power/abx500_chargalg.c
@@ -1654,6 +1654,25 @@
/* Exposure to the sysfs interface */
/**
+ * abx500_chargalg_sysfs_show() - sysfs show operations
+ * @kobj: pointer to the struct kobject
+ * @attr: pointer to the struct attribute
+ * @buf: buffer that holds the parameter to send to userspace
+ *
+ * Returns a buffer to be displayed in user space
+ */
+static ssize_t abx500_chargalg_sysfs_show(struct kobject *kobj,
+ struct attribute *attr, char *buf)
+{
+ struct abx500_chargalg *di = container_of(kobj,
+ struct abx500_chargalg, chargalg_kobject);
+
+ return sprintf(buf, "%d\n",
+ di->susp_status.ac_suspended &&
+ di->susp_status.usb_suspended);
+}
+
+/**
* abx500_chargalg_sysfs_charger() - sysfs store operations
* @kobj: pointer to the struct kobject
* @attr: pointer to the struct attribute
@@ -1721,7 +1740,7 @@
static struct attribute abx500_chargalg_en_charger = \
{
.name = "chargalg",
- .mode = S_IWUSR,
+ .mode = S_IRUGO | S_IWUSR,
};
static struct attribute *abx500_chargalg_chg[] = {
@@ -1730,6 +1749,7 @@
};
static const struct sysfs_ops abx500_chargalg_sysfs_ops = {
+ .show = abx500_chargalg_sysfs_show,
.store = abx500_chargalg_sysfs_charger,
};