[media] vpif_cap/disp: Cleanup, improved comments

[firefly-linux-kernel-4.4.55.git] / drivers / media / video / davinci / vpif_display.c

diff --git a/drivers/media/video/davinci/vpif_display.c b/drivers/media/video/davinci/vpif_display.c
index 44a885878ebf89b88af661e7bd8723b1e3ae41fe..7cb70d916f4b3e3c06048ed2e9b11cd5502e25ac 100644 (file)
--- a/drivers/media/video/davinci/vpif_display.c
+++ b/drivers/media/video/davinci/vpif_display.c
@@ -580,7 +580,10 @@ static void vpif_config_addr(struct channel_obj *ch, int muxmode)
 static int vpif_mmap(struct file *filep, struct vm_area_struct *vma)
 {
        struct vpif_fh *fh = filep->private_data;
-       struct common_obj *common = &fh->channel->common[VPIF_VIDEO_INDEX];
+       struct channel_obj *ch = fh->channel;
+       struct common_obj *common = &(ch->common[VPIF_VIDEO_INDEX]);
+
+       vpif_dbg(2, debug, "vpif_mmap\n");
 
        return videobuf_mmap_mapper(&common->buffer_queue, vma);
 }
@@ -692,7 +695,12 @@ static int vpif_release(struct file *filep)
 }
 
 /* functions implementing ioctls */
-
+/**
+ * vpif_querycap() - QUERYCAP handler
+ * @file: file ptr
+ * @priv: file handle
+ * @cap: ptr to v4l2_capability structure
+ */
 static int vpif_querycap(struct file *file, void  *priv,
                                struct v4l2_capability *cap)
 {
@@ -1106,7 +1114,7 @@ static int vpif_streamon(struct file *file, void *priv,
        if (ret < 0)
                return ret;
 
-       /* Call videobuf_streamon to start streaming  in videobuf */
+       /* Call videobuf_streamon to start streaming in videobuf */
        ret = videobuf_streamon(&common->buffer_queue);
        if (ret < 0) {
                vpif_err("videobuf_streamon\n");
@@ -1873,6 +1881,8 @@ static __init int vpif_probe(struct platform_device *pdev)
                        vpif_obj.sd[i]->grp_id = 1 << i;
        }
 
+       v4l2_info(&vpif_obj.v4l2_dev,
+                       "DM646x VPIF display driver initialized\n");
        return 0;
 
 probe_subdev_out: