V4L/DVB: cx23885: Add a VIDIOC_LOG_STATUS ioctl function for analog video devices

Add a simple log_status function for raw analog video capture device nodes,
to provide insight into the state of the CX2388[578] A/V decoder core.

Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 16 insertions, 0 deletions

diff --git a/drivers/media/video/cx23885/cx23885-video.c b/drivers/media/video/cx23885/cx23885-video.c
index 4e44dcda3875..25194553c529 100644
--- a/drivers/media/video/cx23885/cx23885-video.c
+++ b/drivers/media/video/cx23885/cx23885-video.c
@@ -1205,6 +1205,21 @@ static int vidioc_s_input(struct file *file, void *priv, unsigned int i)
         return 0;
 }
 
+static int vidioc_log_status(struct file *file, void *priv)
+{
+        struct cx23885_fh  *fh  = priv;
+        struct cx23885_dev *dev = fh->dev;
+
+        printk(KERN_INFO
+                "%s/0: ============  START LOG STATUS  ============\n",
+               dev->name);
+        call_all(dev, core, log_status);
+        printk(KERN_INFO
+                "%s/0: =============  END LOG STATUS  =============\n",
+               dev->name);
+        return 0;
+}
+
 static int vidioc_queryctrl(struct file *file, void *priv,
                                 struct v4l2_queryctrl *qctrl)
 {
@@ -1410,6 +1425,7 @@ static const struct v4l2_ioctl_ops video_ioctl_ops = {
         .vidioc_enum_input    = vidioc_enum_input,
         .vidioc_g_input       = vidioc_g_input,
         .vidioc_s_input       = vidioc_s_input,
+        .vidioc_log_status    = vidioc_log_status,
         .vidioc_queryctrl     = vidioc_queryctrl,
         .vidioc_g_ctrl        = vidioc_g_ctrl,
         .vidioc_s_ctrl        = vidioc_s_ctrl,