diff options
| author | Zhiwu Song <Zhiwu.Song@csr.com> | 2013-08-13 17:11:30 +0800 |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2013-08-28 11:45:59 +0200 |
| commit | 5ebffa6b5e0c43edbdd41e5bc53137547a1378cb (patch) | |
| tree | 871b6afb80e48afc1d8e525e3d61b7023dbe4bdd /drivers/i2c | |
| parent | 4602bf1642dbf8b573fc6c224850114565652b4d (diff) | |
| download | linux-5ebffa6b5e0c43edbdd41e5bc53137547a1378cb.tar.bz2 | |
i2c: sirf: support reverse direction of address
if users set I2C_M_REV_DIR_ADDR, revert the direction of address.
Signed-off-by: Zhiwu Song <Zhiwu.Song@csr.com>
Signed-off-by: Rongjun Ying <rongjun.ying@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/busses/i2c-sirf.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/i2c/busses/i2c-sirf.c b/drivers/i2c/busses/i2c-sirf.c index 3b5fd3854522..30ae3780b7bf 100644 --- a/drivers/i2c/busses/i2c-sirf.c +++ b/drivers/i2c/busses/i2c-sirf.c @@ -194,6 +194,10 @@ static void i2c_sirfsoc_set_address(struct sirfsoc_i2c *siic, if (msg->flags & I2C_M_RD) addr |= 1; + /* Reverse direction bit */ + if (msg->flags & I2C_M_REV_DIR_ADDR) + addr ^= 1; + writel(addr, siic->base + SIRFSOC_I2C_CMD(siic->cmd_ptr++)); } |