i2c: Blackfin Two Wire Interface driver

The i2c linux driver for blackfin architecture which supports blackfin
on-chip TWI controller i2c operation.

Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Reviewed-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jean Delvare <khali@linux-fr.org>

1 files changed, 16 insertions, 0 deletions

diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index d7e6cbb9cbef..62b9363dd40e 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -91,6 +91,22 @@ config I2C_AU1550
           This driver can also be built as a module.  If so, the module
           will be called i2c-au1550.
 
+config I2C_BLACKFIN_TWI
+        tristate "Blackfin TWI I2C support"
+        depends on I2C && (BF534 || BF536 || BF537)
+        help
+          This is the TWI I2C device driver for Blackfin 534/536/537.
+          This driver can also be built as a module.  If so, the module
+          will be called i2c-bfin-twi.
+
+config I2C_BLACKFIN_TWI_CLK_KHZ
+        int "Blackfin TWI I2C clock (kHz)"
+        depends on I2C_BLACKFIN_TWI
+        range 10 400
+        default 50
+        help
+          The unit of the TWI clock is kHz.
+
 config I2C_ELEKTOR
         tristate "Elektor ISA card"
         depends on I2C && ISA && BROKEN_ON_SMP