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[v5,46/49] media: davinci: vpif_capture: return -ENODATA for *std calls

Message ID 1400247235-31434-49-git-send-email-prabhakar.csengg@gmail.com (mailing list archive)
State New, archived
Headers show

Commit Message

Prabhakar May 16, 2014, 1:33 p.m. UTC 
From: "Lad, Prabhakar" <prabhakar.csengg@gmail.com>

this patch adds supports to return -ENODATA to *std calls
if the selected output does not support it.

Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
---
 drivers/media/platform/davinci/vpif_capture.c |   24 +++++++++++++++++++++++-
 1 file changed, 23 insertions(+), 1 deletion(-)
diff mbox

Patch

diff --git a/drivers/media/platform/davinci/vpif_capture.c b/drivers/media/platform/davinci/vpif_capture.c
index 0b97023..8d7ada2 100644
--- a/drivers/media/platform/davinci/vpif_capture.c
+++ b/drivers/media/platform/davinci/vpif_capture.c
@@ -862,11 +862,22 @@  static int vpif_querystd(struct file *file, void *priv, v4l2_std_id *std_id)
  */
 static int vpif_g_std(struct file *file, void *priv, v4l2_std_id *std)
 {
+	struct vpif_capture_config *config = vpif_dev->platform_data;
 	struct video_device *vdev = video_devdata(file);
 	struct channel_obj *ch = video_get_drvdata(vdev);
+	struct vpif_capture_chan_config *chan_cfg;
+	struct v4l2_input input;
 
 	vpif_dbg(2, debug, "vpif_g_std\n");
 
+	if (config->chan_config[ch->channel_id].inputs == NULL)
+		return -ENODATA;
+
+	chan_cfg = &config->chan_config[ch->channel_id];
+	input = chan_cfg->inputs[ch->input_idx].input;
+	if (input.capabilities != V4L2_IN_CAP_STD)
+		return -ENODATA;
+
 	*std = ch->video.stdid;
 	return 0;
 }
@@ -879,13 +890,24 @@  static int vpif_g_std(struct file *file, void *priv, v4l2_std_id *std)
  */
 static int vpif_s_std(struct file *file, void *priv, v4l2_std_id std_id)
 {
+	struct vpif_capture_config *config = vpif_dev->platform_data;
 	struct video_device *vdev = video_devdata(file);
 	struct channel_obj *ch = video_get_drvdata(vdev);
 	struct common_obj *common = &ch->common[VPIF_VIDEO_INDEX];
-	int ret = 0;
+	struct vpif_capture_chan_config *chan_cfg;
+	struct v4l2_input input;
+	int ret;
 
 	vpif_dbg(2, debug, "vpif_s_std\n");
 
+	if (config->chan_config[ch->channel_id].inputs == NULL)
+		return -ENODATA;
+
+	chan_cfg = &config->chan_config[ch->channel_id];
+	input = chan_cfg->inputs[ch->input_idx].input;
+	if (input.capabilities != V4L2_IN_CAP_STD)
+		return -ENODATA;
+
 	if (vb2_is_busy(&common->buffer_queue))
 		return -EBUSY;