This makes it possible for applications to handle controls with a class different than V4L2_CTRL_CLASS_USER for gspca subdevices, like for instance V4L2_CID_EXPOSURE_AUTO which some subdrivers use and which can't be controlled right now.
See http://thread.gmane.org/gmane.linux.drivers.video-input-infrastructure/47010 for an example of a problem fixed by this change. NOTE: gspca currently won't handle control types like V4L2_CTRL_TYPE_INTEGER64 or V4L2_CTRL_TYPE_STRING, so just the __s32 field 'value' of 'struct v4l2_ext_control' is handled for now. Signed-off-by: Antonio Ospite <osp...@studenti.unina.it> --- drivers/media/video/gspca/gspca.c | 42 +++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) diff --git a/drivers/media/video/gspca/gspca.c b/drivers/media/video/gspca/gspca.c index ba1bda9..7906093 100644 --- a/drivers/media/video/gspca/gspca.c +++ b/drivers/media/video/gspca/gspca.c @@ -1567,6 +1567,46 @@ static int vidioc_g_ctrl(struct file *file, void *priv, return gspca_get_ctrl(gspca_dev, ctrl->id, &ctrl->value); } +static int vidioc_s_ext_ctrls(struct file *file, void *priv, + struct v4l2_ext_controls *ext_ctrls) +{ + struct gspca_dev *gspca_dev = priv; + int ret = 0; + int i; + + for (i = 0; i < ext_ctrls->count; i++) { + struct v4l2_ext_control *ctrl; + + ctrl = ext_ctrls->controls + i; + ret = gspca_set_ctrl(gspca_dev, ctrl->id, ctrl->value); + if (ret < 0) { + ext_ctrls->error_idx = i; + return ret; + } + } + return ret; +} + +static int vidioc_g_ext_ctrls(struct file *file, void *priv, + struct v4l2_ext_controls *ext_ctrls) +{ + struct gspca_dev *gspca_dev = priv; + int i; + int ret = 0; + + for (i = 0; i < ext_ctrls->count; i++) { + struct v4l2_ext_control *ctrl; + + ctrl = ext_ctrls->controls + i; + ret = gspca_get_ctrl(gspca_dev, ctrl->id, &ctrl->value); + if (ret < 0) { + ext_ctrls->error_idx = i; + return ret; + } + } + return ret; +} + static int vidioc_querymenu(struct file *file, void *priv, struct v4l2_querymenu *qmenu) { @@ -2260,6 +2300,8 @@ static const struct v4l2_ioctl_ops dev_ioctl_ops = { .vidioc_queryctrl = vidioc_queryctrl, .vidioc_g_ctrl = vidioc_g_ctrl, .vidioc_s_ctrl = vidioc_s_ctrl, + .vidioc_g_ext_ctrls = vidioc_g_ext_ctrls, + .vidioc_s_ext_ctrls = vidioc_s_ext_ctrls, .vidioc_querymenu = vidioc_querymenu, .vidioc_enum_input = vidioc_enum_input, .vidioc_g_input = vidioc_g_input, -- 1.7.10 -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
