1 files changed, 51 insertions, 0 deletions
diff --git a/kernel/include/linux/i2c-smbus.h b/kernel/include/linux/i2c-smbus.h
new file mode 100644
index 000000000..8f1b086ca
--- /dev/null
+++ b/kernel/include/linux/i2c-smbus.h
@@ -0,0 +1,51 @@
+/*
+ * i2c-smbus.h - SMBus extensions to the I2C protocol
+ *
+ * Copyright (C) 2010 Jean Delvare <jdelvare@suse.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301 USA.
+ */
+
+#ifndef _LINUX_I2C_SMBUS_H
+#define _LINUX_I2C_SMBUS_H
+
+#include <linux/i2c.h>
+
+
+/**
+ * i2c_smbus_alert_setup - platform data for the smbus_alert i2c client
+ * @alert_edge_triggered: whether the alert interrupt is edge (1) or level (0)
+ *		triggered
+ * @irq: IRQ number, if the smbus_alert driver should take care of interrupt
+ *		handling
+ *
+ * If irq is not specified, the smbus_alert driver doesn't take care of
+ * interrupt handling. In that case it is up to the I2C bus driver to either
+ * handle the interrupts or to poll for alerts.
+ *
+ * If irq is specified then it it crucial that alert_edge_triggered is
+ * properly set.
+ */
+struct i2c_smbus_alert_setup {
+	unsigned int		alert_edge_triggered:1;
+	int			irq;
+};
+
+struct i2c_client *i2c_setup_smbus_alert(struct i2c_adapter *adapter,
+					 struct i2c_smbus_alert_setup *setup);
+int i2c_handle_smbus_alert(struct i2c_client *ara);
+
+#endif /* _LINUX_I2C_SMBUS_H */