1 files changed, 7 insertions, 0 deletions

diff --git a/include/linux/i2c-isa.h b/include/linux/i2c-isa.h
index b5727d7702e1..db793b68356c 100644
--- a/include/linux/i2c-isa.h
+++ b/include/linux/i2c-isa.h
@@ -26,4 +26,11 @@
 extern int i2c_isa_add_driver(struct i2c_driver *driver);
 extern int i2c_isa_del_driver(struct i2c_driver *driver);
 
+/* Detect whether we are on the isa bus. This is only useful to hybrid
+   (i2c+isa) drivers. */
+#define i2c_is_isa_client(clientptr) \
+        ((clientptr)->adapter->algo->id == I2C_ALGO_ISA)
+#define i2c_is_isa_adapter(adapptr) \
+        ((adapptr)->algo->id == I2C_ALGO_ISA)
+
 #endif /* _LINUX_I2C_ISA_H */