From: Hans Verkuil <hans.verk...@cisco.com>
Signed-off-by: Hans Verkuil <hans.verk...@cisco.com>
---
drivers/media/video/vivi.c | 51 +++++++++++++++++++++++++++++--------------
1 files changed, 34 insertions(+), 17 deletions(-)
diff --git a/drivers/media/video/vivi.c b/drivers/media/video/vivi.c
index 5184e55..d056fb0 100644
--- a/drivers/media/video/vivi.c
+++ b/drivers/media/video/vivi.c
@@ -217,6 +217,12 @@ struct vivi_dev {
/* controls */
struct v4l2_ctrl *volume;
+ struct v4l2_ctrl *brightness;
+ struct v4l2_ctrl *contrast;
+ struct v4l2_ctrl *sat;
+ struct v4l2_ctrl *hue;
+ struct v4l2_ctrl *autogain;
+ struct v4l2_ctrl *gain;
struct v4l2_ctrl *button;
struct v4l2_ctrl *boolean;
struct v4l2_ctrl *int32;
@@ -448,14 +454,6 @@ static void gen_text(struct vivi_dev *dev, char *basep,
static void vivi_fillbuff(struct vivi_dev *dev, struct vivi_buffer *buf)
{
- struct v4l2_ctrl *brightness = v4l2_ctrl_find(&dev->ctrl_handler,
- V4L2_CID_BRIGHTNESS);
- struct v4l2_ctrl *contrast = v4l2_ctrl_find(&dev->ctrl_handler,
- V4L2_CID_CONTRAST);
- struct v4l2_ctrl *saturation = v4l2_ctrl_find(&dev->ctrl_handler,
- V4L2_CID_SATURATION);
- struct v4l2_ctrl *hue = v4l2_ctrl_find(&dev->ctrl_handler,
- V4L2_CID_HUE);
int wmax = dev->width;
int hmax = dev->height;
struct timeval ts;
@@ -463,6 +461,7 @@ static void vivi_fillbuff(struct vivi_dev *dev, struct
vivi_buffer *buf)
unsigned ms;
char str[100];
int h, line = 1;
+ s32 gain;
if (!vbuf)
return;
@@ -485,14 +484,17 @@ static void vivi_fillbuff(struct vivi_dev *dev, struct
vivi_buffer *buf)
dev->width, dev->height, dev->input);
gen_text(dev, vbuf, line++ * 16, 16, str);
+ gain = v4l2_ctrl_g_ctrl(dev->gain);
mutex_lock(&dev->ctrl_handler.lock);
snprintf(str, sizeof(str), " brightness %3d, contrast %3d, saturation
%3d, hue %d ",
- brightness->cur.val,
- contrast->cur.val,
- saturation->cur.val,
- hue->cur.val);
+ dev->brightness->cur.val,
+ dev->contrast->cur.val,
+ dev->sat->cur.val,
+ dev->hue->cur.val);
gen_text(dev, vbuf, line++ * 16, 16, str);
- snprintf(str, sizeof(str), " volume %3d ", dev->volume->cur.val);
+ snprintf(str, sizeof(str), " volume %3d, autogain %d, gain %3d ",
+ dev->volume->cur.val, dev->autogain->cur.val,
+ gain);
gen_text(dev, vbuf, line++ * 16, 16, str);
snprintf(str, sizeof(str), " int32 %d, int64 %lld, bitmask %08x ",
dev->int32->cur.val,
@@ -1005,6 +1007,15 @@ static int vidioc_subscribe_event(struct v4l2_fh *fh,
/* --- controls ---------------------------------------------- */
+static int vivi_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct vivi_dev *dev = container_of(ctrl->handler, struct vivi_dev,
ctrl_handler);
+
+ if (ctrl == dev->autogain)
+ dev->gain->val = jiffies & 0xff;
+ return 0;
+}
+
static int vivi_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct vivi_dev *dev = container_of(ctrl->handler, struct vivi_dev,
ctrl_handler);
@@ -1074,6 +1085,7 @@ static int vivi_mmap(struct file *file, struct
vm_area_struct *vma)
}
static const struct v4l2_ctrl_ops vivi_ctrl_ops = {
+ .g_volatile_ctrl = vivi_g_volatile_ctrl,
.s_ctrl = vivi_s_ctrl,
};
@@ -1247,16 +1259,20 @@ static int __init vivi_create_instance(int inst)
hdl = &dev->ctrl_handler;
v4l2_ctrl_handler_init(hdl, 12);
- v4l2_ctrl_new_std(hdl, &vivi_ctrl_ops,
+ dev->brightness = v4l2_ctrl_new_std(hdl, &vivi_ctrl_ops,
V4L2_CID_BRIGHTNESS, i, 255, 1, 127 + i);
- v4l2_ctrl_new_std(hdl, &vivi_ctrl_ops,
+ dev->contrast = v4l2_ctrl_new_std(hdl, &vivi_ctrl_ops,
V4L2_CID_CONTRAST, i, 255, 1, 16 + i);
- v4l2_ctrl_new_std(hdl, &vivi_ctrl_ops,
+ dev->sat = v4l2_ctrl_new_std(hdl, &vivi_ctrl_ops,
V4L2_CID_SATURATION, i, 255, 1, 127 + i);
- v4l2_ctrl_new_std(hdl, &vivi_ctrl_ops,
+ dev->hue = v4l2_ctrl_new_std(hdl, &vivi_ctrl_ops,
V4L2_CID_HUE, -128 + i, 127, 1, i);
dev->volume = v4l2_ctrl_new_std(hdl, &vivi_ctrl_ops,
V4L2_CID_AUDIO_VOLUME, 0, 255, 1, 200);
+ dev->autogain = v4l2_ctrl_new_std(hdl, &vivi_ctrl_ops,
+ V4L2_CID_AUTOGAIN, 0, 1, 1, 1);
+ dev->gain = v4l2_ctrl_new_std(hdl, &vivi_ctrl_ops,
+ V4L2_CID_GAIN, 0, 255, 1, 100);
dev->button = v4l2_ctrl_new_custom(hdl, &vivi_ctrl_button, NULL);
dev->int32 = v4l2_ctrl_new_custom(hdl, &vivi_ctrl_int32, NULL);
dev->int64 = v4l2_ctrl_new_custom(hdl, &vivi_ctrl_int64, NULL);
@@ -1268,6 +1284,7 @@ static int __init vivi_create_instance(int inst)
ret = hdl->error;
goto unreg_dev;
}
+ v4l2_ctrl_auto_cluster(2, &dev->autogain, 0, true);
dev->v4l2_dev.ctrl_handler = hdl;
/* initialize locks */
--
1.7.1
--
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