[PATCH 4/5] i2c: sirfsoc: support reverse direction of address

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From: Zhiwu Song <Zhiwu.Song@xxxxxxx>

if users set I2C_M_REV_DIR_ADDR, revert the direction of address.

Signed-off-by: Zhiwu Song <Zhiwu.Song@xxxxxxx>
Signed-off-by: Rongjun Ying <rongjun.ying@xxxxxxx>
Signed-off-by: Barry Song <Baohua.Song@xxxxxxx>
---
 drivers/i2c/busses/i2c-sirf.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/i2c/busses/i2c-sirf.c b/drivers/i2c/busses/i2c-sirf.c
index 746388f..d2b7913 100644
--- a/drivers/i2c/busses/i2c-sirf.c
+++ b/drivers/i2c/busses/i2c-sirf.c
@@ -195,6 +195,10 @@ 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++));
 }
 
-- 
1.8.2.3

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