From mboxrd@z Thu Jan 1 00:00:00 1970 From: Barry Song <21cnbao-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> Subject: [PATCH 4/5] i2c: sirfsoc: support reverse direction of address Date: Tue, 13 Aug 2013 17:11:30 +0800 Message-ID: <1376385091-30597-5-git-send-email-Baohua.Song@csr.com> References: <1376385091-30597-1-git-send-email-Baohua.Song@csr.com> Return-path: In-Reply-To: <1376385091-30597-1-git-send-email-Baohua.Song-kQvG35nSl+M@public.gmane.org> Sender: linux-i2c-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: wsa-z923LK4zBo2bacvFa/9K2g@public.gmane.org, linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Cc: workgroup.linux-kQvG35nSl+M@public.gmane.org, Zhiwu Song , Rongjun Ying , Barry Song List-Id: linux-i2c@vger.kernel.org From: Zhiwu Song if users set I2C_M_REV_DIR_ADDR, revert the direction of address. Signed-off-by: Zhiwu Song Signed-off-by: Rongjun Ying Signed-off-by: Barry Song --- 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