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authorManjunath Hadli <manjunath.hadli@ti.com>2012-04-13 04:49:34 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2012-07-30 19:04:32 -0300
commit764af39aa415c9418f035d2a4bd606d7a7814a68 (patch)
tree54d38fa2aa8569a924b1289a7f631e540a65be60
parentfc613d44e08a9f0986e493e2605132161b5b39a5 (diff)
downloadop-kernel-dev-764af39aa415c9418f035d2a4bd606d7a7814a68.zip
op-kernel-dev-764af39aa415c9418f035d2a4bd606d7a7814a68.tar.gz
[media] davinci: vpif capture: size up the memory for the buffers from the buffer pool
Size up the memory for the buffers from the buffer pool allocated in board file. Then adjust the reqbuf count depending the available memory. Signed-off-by: Manjunath Hadli <manjunath.hadli@ti.com> Signed-off-by: Lad, Prabhakar <prabhakar.lad@ti.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
-rw-r--r--drivers/media/video/davinci/vpif_capture.c39
-rw-r--r--drivers/media/video/davinci/vpif_capture.h1
2 files changed, 38 insertions, 2 deletions
diff --git a/drivers/media/video/davinci/vpif_capture.c b/drivers/media/video/davinci/vpif_capture.c
index bce31ea..d126fb6 100644
--- a/drivers/media/video/davinci/vpif_capture.c
+++ b/drivers/media/video/davinci/vpif_capture.c
@@ -217,6 +217,23 @@ static int vpif_buffer_setup(struct videobuf_queue *q, unsigned int *count,
/* Calculate the size of the buffer */
*size = config_params.channel_bufsize[ch->channel_id];
+ /*
+ * Checking if the buffer size exceeds the available buffer
+ * ycmux_mode = 0 means 1 channel mode HD and
+ * ycmux_mode = 1 means 2 channels mode SD
+ */
+ if (ch->vpifparams.std_info.ycmux_mode == 0) {
+ if (config_params.video_limit[ch->channel_id])
+ while (*size * *count > (config_params.video_limit[0]
+ + config_params.video_limit[1]))
+ (*count)--;
+ } else {
+ if (config_params.video_limit[ch->channel_id])
+ while (*size * *count >
+ config_params.video_limit[ch->channel_id])
+ (*count)--;
+ }
+
if (*count < config_params.min_numbuffers)
*count = config_params.min_numbuffers;
return 0;
@@ -890,7 +907,7 @@ static int vpif_reqbufs(struct file *file, void *priv,
}
}
- if (V4L2_BUF_TYPE_VIDEO_CAPTURE != reqbuf->type)
+ if (V4L2_BUF_TYPE_VIDEO_CAPTURE != reqbuf->type || !vpif_dev)
return -EINVAL;
index = VPIF_VIDEO_INDEX;
@@ -902,7 +919,7 @@ static int vpif_reqbufs(struct file *file, void *priv,
/* Initialize videobuf queue as per the buffer type */
videobuf_queue_dma_contig_init(&common->buffer_queue,
- &video_qops, NULL,
+ &video_qops, vpif_dev,
&common->irqlock,
reqbuf->type,
common->fmt.fmt.pix.field,
@@ -2171,6 +2188,7 @@ static __init int vpif_probe(struct platform_device *pdev)
struct video_device *vfd;
struct resource *res;
int subdev_count;
+ size_t size;
vpif_dev = &pdev->dev;
@@ -2225,6 +2243,23 @@ static __init int vpif_probe(struct platform_device *pdev)
ch->video_dev = vfd;
}
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (res) {
+ size = resource_size(res);
+ /* The resources are divided into two equal memory and when we
+ * have HD output we can add them together
+ */
+ for (j = 0; j < VPIF_CAPTURE_MAX_DEVICES; j++) {
+ ch = vpif_obj.dev[j];
+ ch->channel_id = j;
+ /* only enabled if second resource exists */
+ config_params.video_limit[ch->channel_id] = 0;
+ if (size)
+ config_params.video_limit[ch->channel_id] =
+ size/2;
+ }
+ }
+
for (j = 0; j < VPIF_CAPTURE_MAX_DEVICES; j++) {
ch = vpif_obj.dev[j];
ch->channel_id = j;
diff --git a/drivers/media/video/davinci/vpif_capture.h b/drivers/media/video/davinci/vpif_capture.h
index a693d4e..8095910 100644
--- a/drivers/media/video/davinci/vpif_capture.h
+++ b/drivers/media/video/davinci/vpif_capture.h
@@ -151,6 +151,7 @@ struct vpif_config_params {
u32 min_bufsize[VPIF_CAPTURE_NUM_CHANNELS];
u32 channel_bufsize[VPIF_CAPTURE_NUM_CHANNELS];
u8 default_device[VPIF_CAPTURE_NUM_CHANNELS];
+ u32 video_limit[VPIF_CAPTURE_NUM_CHANNELS];
u8 max_device_type;
};
/* Struct which keeps track of the line numbers for the sliced vbi service */
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