Commit 6807cfcb authored by Hans de Goede's avatar Hans de Goede Committed by Mauro Carvalho Chehab

[media] pwc: Read new preset values when changing awb control to a preset

So that events get generated for the new red + blue bal values when switching
to a preset. This allows apps to solely rely on events instead of needing
to do a query + g_ctrl on all controls when a control with the update flag
set is gets set or gets an event.
Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent c20d78cd
......@@ -575,18 +575,14 @@ static int pwc_s_input(struct file *file, void *fh, unsigned int i)
return i ? -EINVAL : 0;
}
static int pwc_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
static int pwc_g_volatile_ctrl_unlocked(struct v4l2_ctrl *ctrl)
{
struct pwc_device *pdev =
container_of(ctrl->handler, struct pwc_device, ctrl_handler);
int ret = 0;
mutex_lock(&pdev->udevlock);
if (!pdev->udev) {
ret = -ENODEV;
goto leave;
}
if (!pdev->udev)
return -ENODEV;
switch (ctrl->id) {
case V4L2_CID_AUTO_WHITE_BALANCE:
......@@ -651,7 +647,17 @@ static int pwc_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
if (ret)
PWC_ERROR("g_ctrl %s error %d\n", ctrl->name, ret);
leave:
return ret;
}
static int pwc_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
{
struct pwc_device *pdev =
container_of(ctrl->handler, struct pwc_device, ctrl_handler);
int ret;
mutex_lock(&pdev->udevlock);
ret = pwc_g_volatile_ctrl_unlocked(ctrl);
mutex_unlock(&pdev->udevlock);
return ret;
}
......@@ -669,6 +675,15 @@ static int pwc_set_awb(struct pwc_device *pdev)
if (pdev->auto_white_balance->val != awb_manual)
pdev->color_bal_valid = false; /* Force cache update */
/*
* If this is a preset, update our red / blue balance values
* so that events get generated for the new preset values
*/
if (pdev->auto_white_balance->val == awb_indoor ||
pdev->auto_white_balance->val == awb_outdoor ||
pdev->auto_white_balance->val == awb_fl)
pwc_g_volatile_ctrl_unlocked(pdev->auto_white_balance);
}
if (pdev->auto_white_balance->val != awb_manual)
return 0;
......
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