i2c: Add support for device alias names

Based on earlier work by Jon Smirl and Jochen Friedrich.

This patch allows new-style i2c chip drivers to have alias names using
the official kernel aliasing system and MODULE_DEVICE_TABLE(). At this
point, the old i2c driver binding scheme (driver_name/type) is still
supported.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Jochen Friedrich <jochen@scram.de>
Cc: Jon Smirl <jonsmirl@gmail.com>
Cc: Kay Sievers <kay.sievers@vrfy.org>

1 files changed, 11 insertions, 0 deletions

diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h
index 139d49d2f078..d73eceaa7afb 100644
--- a/include/linux/mod_devicetable.h
+++ b/include/linux/mod_devicetable.h
@@ -368,4 +368,15 @@ struct virtio_device_id {
 };
 #define VIRTIO_DEV_ANY_ID       0xffffffff
 
+/* i2c */
+
+#define I2C_NAME_SIZE   20
+#define I2C_MODULE_PREFIX "i2c:"
+
+struct i2c_device_id {
+        char name[I2C_NAME_SIZE];
+        kernel_ulong_t driver_data;     /* Data private to the driver */
+};
+
+
 #endif /* LINUX_MOD_DEVICETABLE_H */