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Commit 5ebffa6b authored by Zhiwu Song's avatar Zhiwu Song Committed by Wolfram Sang
Browse files

i2c: sirf: support reverse direction of address 



if users set I2C_M_REV_DIR_ADDR, revert the direction of address.

Signed-off-by: default avatarZhiwu Song <Zhiwu.Song@csr.com>
Signed-off-by: default avatarRongjun Ying <rongjun.ying@csr.com>
Signed-off-by: default avatarBarry Song <Baohua.Song@csr.com>
Signed-off-by: default avatarWolfram Sang <wsa@the-dreams.de>
parent 4602bf16

drivers/i2c/busses/i2c-sirf.c

+4 −0
Original line number Diff line number Diff line
@@ -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++));

}