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authorTaras Kondratiuk <taras.kondratiuk@linaro.org>2013-11-20 20:23:44 +0200
committerWolfram Sang <wsa@the-dreams.de>2013-11-26 13:38:44 +0100
commita238dcfa84bcd9d5d0ceba3fa66a335f233f8f1b (patch)
tree66422e77da230f2a91c4a9d1576318ef06f033a4
parent6ce4eac1f600b34f2f7f58f9cd8f0503d79e42ae (diff)
downloadop-kernel-dev-a238dcfa84bcd9d5d0ceba3fa66a335f233f8f1b.zip
op-kernel-dev-a238dcfa84bcd9d5d0ceba3fa66a335f233f8f1b.tar.gz
i2c: davinci: raw read and write endian fix
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>
-rw-r--r--drivers/i2c/busses/i2c-davinci.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/i2c/busses/i2c-davinci.c b/drivers/i2c/busses/i2c-davinci.c
index ff05d9f..af0b583 100644
--- a/drivers/i2c/busses/i2c-davinci.c
+++ b/drivers/i2c/busses/i2c-davinci.c
@@ -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. */
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