i2c: davinci: raw read and write endian fix
authorTaras Kondratiuk <taras.kondratiuk@linaro.org>
Wed, 20 Nov 2013 18:23:44 +0000 (20:23 +0200)
committerWolfram Sang <wsa@the-dreams.de>
Tue, 26 Nov 2013 12:38:44 +0000 (13:38 +0100)
I2C IP block expect LE data, but CPU may operate in BE mode.
Need to use endian neutral functions to read/write h/w registers.
I.e instead of __raw_read[lw] and __raw_write[lw] functions code
need to use read[lw]_relaxed and write[lw]_relaxed functions.
If the first simply reads/writes register, the second will byteswap
it if host operates in BE mode.

Changes are trivial sed like replacement of __raw_xxx functions
with xxx_relaxed variant.

Signed-off-by: Taras Kondratiuk <taras.kondratiuk@linaro.org>
Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
drivers/i2c/busses/i2c-davinci.c

index ff05d9f..af0b583 100644 (file)
@@ -125,12 +125,12 @@ static struct davinci_i2c_platform_data davinci_i2c_platform_data_default = {
 static inline void davinci_i2c_write_reg(struct davinci_i2c_dev *i2c_dev,
                                         int reg, u16 val)
 {
-       __raw_writew(val, i2c_dev->base + reg);
+       writew_relaxed(val, i2c_dev->base + reg);
 }
 
 static inline u16 davinci_i2c_read_reg(struct davinci_i2c_dev *i2c_dev, int reg)
 {
-       return __raw_readw(i2c_dev->base + reg);
+       return readw_relaxed(i2c_dev->base + reg);
 }
 
 /* Generate a pulse on the i2c clock pin. */