1 files changed, 75 insertions, 0 deletions
diff --git a/drivers/mfd/twl6030-poweroff.c b/drivers/mfd/twl6030-poweroff.c
new file mode 100644
index 0000000..776a251
--- /dev/null
+++ b/drivers/mfd/twl6030-poweroff.c
@@ -0,0 +1,75 @@
+/*
+ * /drivers/mfd/twl6030-poweroff.c
+ *
+ * Power off device
+ *
+ * Copyright (C) 2011 Texas Instruments Corporation
+ *
+ * Written by Rajeev Kulkarni <rajeevk@ti.com>
+ *
+ * This file is subject to the terms and conditions of the GNU General
+ * Public License. See the file "COPYING" in the main directory of this
+ * archive for more details.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include <linux/module.h>
+#include <linux/pm.h>
+#include <linux/i2c/twl.h>
+
+#define TWL6030_PHOENIX_DEV_ON	0x25
+#define APP_DEVOFF	(1<<0)
+#define CON_DEVOFF	(1<<1)
+#define MOD_DEVOFF	(1<<2)
+
+void twl6030_poweroff(void)
+{
+	u8 val = 0;
+	int err = 0;
+
+	err = twl_i2c_read_u8(TWL6030_MODULE_ID0, &val,
+				  TWL6030_PHOENIX_DEV_ON);
+	if (err) {
+		pr_warning("I2C error %d reading PHOENIX_DEV_ON\n", err);
+		return;
+	}
+
+	val |= APP_DEVOFF | CON_DEVOFF | MOD_DEVOFF;
+
+	err = twl_i2c_write_u8(TWL6030_MODULE_ID0, val,
+				   TWL6030_PHOENIX_DEV_ON);
+
+	if (err) {
+		pr_warning("I2C error %d writing PHOENIX_DEV_ON\n", err);
+		return;
+	}
+
+	return;
+}
+
+static int __init twl6030_poweroff_init(void)
+{
+	pm_power_off = twl6030_poweroff;
+
+	return 0;
+}
+
+static void __exit twl6030_poweroff_exit(void)
+{
+	pm_power_off = NULL;
+}
+
+module_init(twl6030_poweroff_init);
+module_exit(twl6030_poweroff_exit);
+
+MODULE_DESCRIPTION("TLW6030 device power off");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Rajeev Kulkarni");