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Message-Id: <1400247235-31434-49-git-send-email-prabhakar.csengg@gmail.com>
Date: Fri, 16 May 2014 19:03:52 +0530
From: "Lad, Prabhakar" <prabhakar.csengg@...il.com>
To: LMML <linux-media@...r.kernel.org>,
Hans Verkuil <hans.verkuil@...co.com>
Cc: DLOS <davinci-linux-open-source@...ux.davincidsp.com>,
LKML <linux-kernel@...r.kernel.org>,
"Lad, Prabhakar" <prabhakar.csengg@...il.com>
Subject: [PATCH v5 46/49] media: davinci: vpif_capture: return -ENODATA for *std calls
From: "Lad, Prabhakar" <prabhakar.csengg@...il.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@...il.com>
---
drivers/media/platform/davinci/vpif_capture.c | 24 +++++++++++++++++++++++-
1 file changed, 23 insertions(+), 1 deletion(-)
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;
--
1.7.9.5
--
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