[media] hdpvr: allow g/s/enum/querystd when in legacy mode

Both MythTV and gstreamer expect that they can set/get/query/enumerate the
standards, even if the input is the component input for which standards
really do not apply.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/usb/hdpvr/hdpvr-video.c b/drivers/media/usb/hdpvr/hdpvr-video.c
index 4376309..774ba0e 100644 (file)
--- a/drivers/media/usb/hdpvr/hdpvr-video.c
+++ b/drivers/media/usb/hdpvr/hdpvr-video.c
@@ -571,13 +571,14 @@ static int vidioc_querycap(struct file *file, void  *priv,
        return 0;
 }
 
-static int vidioc_s_std(struct file *file, void *private_data,
+static int vidioc_s_std(struct file *file, void *_fh,
                        v4l2_std_id std)
 {
        struct hdpvr_device *dev = video_drvdata(file);
+       struct hdpvr_fh *fh = _fh;
        u8 std_type = 1;
 
-       if (dev->options.video_input == HDPVR_COMPONENT)
+       if (!fh->legacy_mode && dev->options.video_input == HDPVR_COMPONENT)
                return -ENODATA;
        if (dev->status != STATUS_IDLE)
                return -EBUSY;
@@ -590,25 +591,27 @@ static int vidioc_s_std(struct file *file, void *private_data,
        return hdpvr_config_call(dev, CTRL_VIDEO_STD_TYPE, std_type);
 }
 
-static int vidioc_g_std(struct file *file, void *private_data,
+static int vidioc_g_std(struct file *file, void *_fh,
                        v4l2_std_id *std)
 {
        struct hdpvr_device *dev = video_drvdata(file);
+       struct hdpvr_fh *fh = _fh;
 
-       if (dev->options.video_input == HDPVR_COMPONENT)
+       if (!fh->legacy_mode && dev->options.video_input == HDPVR_COMPONENT)
                return -ENODATA;
        *std = dev->cur_std;
        return 0;
 }
 
-static int vidioc_querystd(struct file *file, void *fh, v4l2_std_id *a)
+static int vidioc_querystd(struct file *file, void *_fh, v4l2_std_id *a)
 {
        struct hdpvr_device *dev = video_drvdata(file);
        struct hdpvr_video_info *vid_info;
+       struct hdpvr_fh *fh = _fh;
 
-       if (dev->options.video_input == HDPVR_COMPONENT)
-               return -ENODATA;
        *a = V4L2_STD_ALL;
+       if (dev->options.video_input == HDPVR_COMPONENT)
+               return fh->legacy_mode ? 0 : -ENODATA;
        vid_info = get_video_info(dev);
        if (vid_info == NULL)
                return 0;
@@ -742,8 +745,7 @@ static const char *iname[] = {
        [HDPVR_COMPOSITE] = "Composite",
 };
 
-static int vidioc_enum_input(struct file *file, void *priv,
-                               struct v4l2_input *i)
+static int vidioc_enum_input(struct file *file, void *_fh, struct v4l2_input *i)
 {
        unsigned int n;
 
@@ -764,7 +766,7 @@ static int vidioc_enum_input(struct file *file, void *priv,
        return 0;
 }
 
-static int vidioc_s_input(struct file *file, void *private_data,
+static int vidioc_s_input(struct file *file, void *_fh,
                          unsigned int index)
 {
        struct hdpvr_device *dev = video_drvdata(file);
@@ -779,8 +781,20 @@ static int vidioc_s_input(struct file *file, void *private_data,
        retval = hdpvr_config_call(dev, CTRL_VIDEO_INPUT_VALUE, index+1);
        if (!retval) {
                dev->options.video_input = index;
+               /*
+                * Unfortunately gstreamer calls ENUMSTD and bails out if it
+                * won't find any formats, even though component input is
+                * selected. This means that we have to leave tvnorms at
+                * V4L2_STD_ALL. We cannot use the 'legacy' trick since
+                * tvnorms is set at the device node level and not at the
+                * filehandle level.
+                *
+                * Comment this out for now, but if the legacy mode can be
+                * removed in the future, then this code should be enabled
+                * again.
                dev->video_dev->tvnorms =
-                       index != HDPVR_COMPONENT ? V4L2_STD_ALL : 0;
+                       (index != HDPVR_COMPONENT) ? V4L2_STD_ALL : 0;
+                */
        }
 
        return retval;
@@ -1126,6 +1140,7 @@ static const struct video_device hdpvr_video_template = {
        .fops                   = &hdpvr_fops,
        .release                = hdpvr_device_release,
        .ioctl_ops              = &hdpvr_ioctl_ops,
+       .tvnorms                = V4L2_STD_ALL,
 };
 
 static const struct v4l2_ctrl_ops hdpvr_ctrl_ops = {