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authorLars-Peter Clausen <lars@metafoo.de>2011-11-16 13:13:36 +0400
committerGreg Kroah-Hartman <gregkh@suse.de>2011-11-18 00:15:38 +0400
commit7c92784a546d2945b6d6973a30f7134be78eb7a4 (patch)
tree33321ac3d933a08646ce8418badd876f3917929f /include/linux/i2c.h
parent907d0ed1c84114d4e8dafd66af982515d3739c90 (diff)
downloadlinux-7c92784a546d2945b6d6973a30f7134be78eb7a4.tar.xz
I2C: Add helper macro for i2c_driver boilerplate
This patch introduces the module_i2c_driver macro which is a convenience macro for I2C driver modules similar to module_platform_driver. It is intended to be used by drivers which init/exit section does nothing but register/unregister the I2C driver. By using this macro it is possible to eliminate a few lines of boilerplate code per I2C driver. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Acked-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Jonathan Cameron <jic23@cam.ac.uk> Acked-by: Wolfram Sang <w.sang@pengutronix.de> Acked-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'include/linux/i2c.h')
-rw-r--r--include/linux/i2c.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/i2c.h b/include/linux/i2c.h
index a81bf6d23b3e..7e92854fe9cc 100644
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h
@@ -485,6 +485,19 @@ static inline int i2c_adapter_id(struct i2c_adapter *adap)
{
return adap->nr;
}
+
+/**
+ * module_i2c_driver() - Helper macro for registering a I2C driver
+ * @__i2c_driver: i2c_driver struct
+ *
+ * Helper macro for I2C drivers which do not do anything special in module
+ * init/exit. This eliminates a lot of boilerplate. Each module may only
+ * use this macro once, and calling it replaces module_init() and module_exit()
+ */
+#define module_i2c_driver(__i2c_driver) \
+ module_driver(__i2c_driver, i2c_add_driver, \
+ i2c_del_driver)
+
#endif /* I2C */
#endif /* __KERNEL__ */