i2c: add CSR SiRFprimaII on-chip I2C controllers driver

SiRFprimaII is the latest generation application processor from CSR’s
multi-function SoC product family.
The SoC support codes are in arch/arm/mach-prima2 from Linux mainline
3.0.
There are two I2C controllers on primaII, features include:
* Two I2C controller modules are on chip
* RISC I/O bus read write register
* Up to 16 bytes data buffer for issuing commands and writing data
  at the same time
* Up to 16 commands, and receiving read data 16 bytes at a time
* Error INT report (ACK check)
* No-ACK bus protocols (SCCB bus protocols)

Signed-off-by: Zhiwu Song <Zhiwu.Song@csr.com>
Signed-off-by: Xiangzhen Ye <Xiangzhen.Ye@csr.com>
Signed-off-by: Yuping Luo <Yuping.Luo@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>

1 files changed, 10 insertions, 0 deletions

diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index e99bfa86ba71..71c1b0a7535c 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -645,6 +645,16 @@ config I2C_SIMTEC
           This driver can also be built as a module. If so, the module
           will be called i2c-simtec.
 
+config I2C_SIRF
+        tristate "CSR SiRFprimaII I2C interface"
+        depends on ARCH_PRIMA2
+        help
+          If you say yes to this option, support will be included for the
+          CSR SiRFprimaII I2C interface.
+
+          This driver can also be built as a module.  If so, the module
+          will be called i2c-sirf.
+
 config I2C_STU300
         tristate "ST Microelectronics DDC I2C interface"
         depends on MACH_U300