i2c: i2c-ocores: support for 16bit and 32bit IO

Some architectures supports only 16-bit or 32-bit read/write access to
their IO space. Add a 'reg-io-width' platform and OF parameter which
specifies the IO width to support these platforms.

reg-io-width can be specified as 1, 2 or 4, and has a default value
of 1 if it is unspecified.

Signed-off-by: Ganesan Ramalingam <ganesanr@broadcom.com>
Signed-off-by: Jayachandran C <jayachandranc@netlogicmicro.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/i2c-ocores.h b/include/linux/i2c-ocores.h
index 5d95df2436f4..1c06b5c7c308 100644
--- a/include/linux/i2c-ocores.h
+++ b/include/linux/i2c-ocores.h
@@ -13,6 +13,7 @@
 
 struct ocores_i2c_platform_data {
         u32 reg_shift; /* register offset shift value */
+        u32 reg_io_width; /* register io read/write width */
         u32 clock_khz; /* input clock in kHz */
         u8 num_devices; /* number of devices in the devices list */
         struct i2c_board_info const *devices; /* devices connected to the bus */