V4L/DVB (7897): TCM825x: Include invertation of image mirroring in co…

…nfiguration

Add invertation of image mirroring register bits to default
configuration.

This is useful when the camera module is e.g. mounted upside down.

Signed-off-by: Sakari Ailus <sakari.ailus@nokia.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

drivers/media/video/tcm825x.c

@@ -523,6 +523,9 @@ static int ioctl_g_ctrl(struct v4l2_int_device *s,
 	if (val < 0)
 		return val;
 
+	if (vc->id == V4L2_CID_HFLIP || vc->id == V4L2_CID_VFLIP)
+		val ^= sensor->platform_data->is_upside_down();
+
 	vc->value = val;
 	return 0;
 }
@@ -556,6 +559,9 @@ static int ioctl_s_ctrl(struct v4l2_int_device *s,
 	if (lvc == NULL)
 		return -EINVAL;
 
+	if (vc->id == V4L2_CID_HFLIP || vc->id == V4L2_CID_VFLIP)
+		val ^= sensor->platform_data->is_upside_down();
+
 	val = val << lvc->start_bit;
 	if (tcm825x_write_reg_mask(client, lvc->reg, val))
 		return -EIO;

drivers/media/video/tcm825x.h

@@ -182,6 +182,7 @@ struct tcm825x_platform_data {
 	int (*needs_reset)(struct v4l2_int_device *s, void *buf,
 			   struct v4l2_pix_format *fmt);
 	int (*ifparm)(struct v4l2_ifparm *p);
+	int (*is_upside_down)(void);
 };
 
 /* Array of image sizes supported by TCM825X.  These must be ordered from