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

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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>
This commit is contained in:
Ganesan Ramalingam 2012-07-13 19:14:25 +05:30 • committed by Wolfram Sang
parent d739a464f3
commit 7326e38ffe
3 changed files with 22 additions and 2 deletions
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1
include/linux/i2c-ocores.h
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@ -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 */