From 829d500667448b7ea9465615261a988adc3aa645 Mon Sep 17 00:00:00 2001
From: Gregoire Gentil <gregoire@gentil.com>
Date: Fri, 12 Mar 2010 11:42:45 +0100
Subject: [PATCH 04/17] bq27x00_battery: add charged gpio

---
 drivers/power/bq27x00_battery.c |   21 +++++++++++++++++++++
 1 files changed, 21 insertions(+), 0 deletions(-)

diff --git a/drivers/power/bq27x00_battery.c b/drivers/power/bq27x00_battery.c
index 6935bb6..4b80f59 100644
--- a/drivers/power/bq27x00_battery.c
+++ b/drivers/power/bq27x00_battery.c
@@ -28,6 +28,7 @@
 
 #define DRIVER_VERSION			"1.0.0"
 
+#define BQ27x00_REG_MODE		0x00
 #define BQ27x00_REG_TEMP		0x06
 #define BQ27x00_REG_VOLT		0x08
 #define BQ27x00_REG_RSOC		0x0B /* Relative State-of-Charge */
@@ -65,6 +66,7 @@ static enum power_supply_property bq27x00_battery_props[] = {
 	POWER_SUPPLY_PROP_CURRENT_NOW,
 	POWER_SUPPLY_PROP_CAPACITY,
 	POWER_SUPPLY_PROP_TEMP,
+	POWER_SUPPLY_PROP_ONLINE,
 };
 
 /*
@@ -83,6 +85,22 @@ static int bq27x00_read(u8 reg, int *rt_value, int b_single,
 }
 
 /*
+ * Return the GPIO status (0 or 1)
+ * Or < 0 if something fails.
+ */
+static int bq27x00_gpio(struct bq27x00_device_info *di)
+{
+	int ret;
+	int gpio = 0;
+
+	ret = bq27x00_read(BQ27x00_REG_MODE, &gpio, 0, di);
+	if (ret)
+		return ret;
+
+	return (gpio & 0x40) >> 6;
+}
+
+/*
  * Return the battery temperature in Celsius degrees
  * Or < 0 if something fails.
  */
@@ -184,6 +202,9 @@ static int bq27x00_battery_get_property(struct power_supply *psy,
 	case POWER_SUPPLY_PROP_TEMP:
 		val->intval = bq27x00_battery_temperature(di);
 		break;
+	case POWER_SUPPLY_PROP_ONLINE:
+		val->intval = bq27x00_gpio(di);
+		break;
 	default:
 		return -EINVAL;
 	}
-- 
1.6.6.1

