V4L/DVB (12536): soc-camera: remove .gain and .exposure struct soc_camera_device members
This makes the soc-camera interface for V4L2 subdevices thinner yet. Handle
gain and exposure internally in each driver just like all other controls.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/mt9t031.c b/drivers/media/video/mt9t031.c
index 9a64896..6966f64 100644
--- a/drivers/media/video/mt9t031.c
+++ b/drivers/media/video/mt9t031.c
@@ -73,6 +73,8 @@
int model; /* V4L2_IDENT_MT9T031* codes from v4l2-chip-ident.h */
u16 xskip;
u16 yskip;
+ unsigned int gain;
+ unsigned int exposure;
unsigned char autoexposure;
};
@@ -301,16 +303,15 @@
ret = reg_write(client, MT9T031_WINDOW_HEIGHT,
rect->height + icd->y_skip_top - 1);
if (ret >= 0 && mt9t031->autoexposure) {
- ret = set_shutter(client,
- rect->height + icd->y_skip_top + vblank);
+ unsigned int total_h = rect->height + icd->y_skip_top + vblank;
+ ret = set_shutter(client, total_h);
if (ret >= 0) {
const u32 shutter_max = MT9T031_MAX_HEIGHT + vblank;
const struct v4l2_queryctrl *qctrl =
soc_camera_find_qctrl(icd->ops,
V4L2_CID_EXPOSURE);
- icd->exposure = (shutter_max / 2 + (rect->height +
- icd->y_skip_top + vblank - 1) *
- (qctrl->maximum - qctrl->minimum)) /
+ mt9t031->exposure = (shutter_max / 2 + (total_h - 1) *
+ (qctrl->maximum - qctrl->minimum)) /
shutter_max + qctrl->minimum;
}
}
@@ -553,6 +554,12 @@
case V4L2_CID_EXPOSURE_AUTO:
ctrl->value = mt9t031->autoexposure;
break;
+ case V4L2_CID_GAIN:
+ ctrl->value = mt9t031->gain;
+ break;
+ case V4L2_CID_EXPOSURE:
+ ctrl->value = mt9t031->exposure;
+ break;
}
return 0;
}
@@ -624,7 +631,7 @@
}
/* Success */
- icd->gain = ctrl->value;
+ mt9t031->gain = ctrl->value;
break;
case V4L2_CID_EXPOSURE:
/* mt9t031 has maximum == default */
@@ -641,7 +648,7 @@
old, shutter);
if (set_shutter(client, shutter) < 0)
return -EIO;
- icd->exposure = ctrl->value;
+ mt9t031->exposure = ctrl->value;
mt9t031->autoexposure = 0;
}
break;
@@ -649,14 +656,14 @@
if (ctrl->value) {
const u16 vblank = MT9T031_VERTICAL_BLANK;
const u32 shutter_max = MT9T031_MAX_HEIGHT + vblank;
- if (set_shutter(client, mt9t031->rect.height +
- icd->y_skip_top + vblank) < 0)
+ unsigned int total_h = mt9t031->rect.height +
+ icd->y_skip_top + vblank;
+
+ if (set_shutter(client, total_h) < 0)
return -EIO;
qctrl = soc_camera_find_qctrl(icd->ops, V4L2_CID_EXPOSURE);
- icd->exposure = (shutter_max / 2 +
- (mt9t031->rect.height +
- icd->y_skip_top + vblank - 1) *
- (qctrl->maximum - qctrl->minimum)) /
+ mt9t031->exposure = (shutter_max / 2 + (total_h - 1) *
+ (qctrl->maximum - qctrl->minimum)) /
shutter_max + qctrl->minimum;
mt9t031->autoexposure = 1;
} else
@@ -700,6 +707,10 @@
if (ret < 0)
dev_err(&client->dev, "Failed to initialise the camera\n");
+ /* mt9t031_idle() has reset the chip to default. */
+ mt9t031->exposure = 255;
+ mt9t031->gain = 64;
+
return ret;
}