From: Frank Schäfer <fschaefer.oss@googlemail.com>
Date: Sun, 23 Sep 2012 20:16:34 +0000 (-0300)
Subject: [media] ov2640: select sensor register bank before applying h/v-flip settings
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=a52eb6c02fa27efb5f8980312785fce1f77377e2;p=openwrt%2Fstaging%2Fblogic.git

[media] ov2640: select sensor register bank before applying h/v-flip settings

We currently don't select the register bank in ov2640_s_ctrl, so we can end up
writing to DSP register 0x04 instead of sensor register 0x04.
This happens for example when calling ov2640_s_ctrl after ov2640_s_fmt.

Signed-off-by: Frank Schäfer <fschaefer.oss@googlemail.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
---

diff --git a/drivers/media/i2c/soc_camera/ov2640.c b/drivers/media/i2c/soc_camera/ov2640.c
index 78ac5744cb5d..d2d298b6354e 100644
--- a/drivers/media/i2c/soc_camera/ov2640.c
+++ b/drivers/media/i2c/soc_camera/ov2640.c
@@ -684,6 +684,11 @@ static int ov2640_s_ctrl(struct v4l2_ctrl *ctrl)
 		&container_of(ctrl->handler, struct ov2640_priv, hdl)->subdev;
 	struct i2c_client  *client = v4l2_get_subdevdata(sd);
 	u8 val;
+	int ret;
+
+	ret = i2c_smbus_write_byte_data(client, BANK_SEL, BANK_SEL_SENS);
+	if (ret < 0)
+		return ret;
 
 	switch (ctrl->id) {
 	case V4L2_CID_VFLIP: