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Date: Sun, 8 Mar 2015 21:57:23 +0000
From: Lad Prabhakar <prabhakar.csengg@...il.com>
To: LMML <linux-media@...r.kernel.org>,
Hans Verkuil <hans.verkuil@...co.com>
Cc: LKML <linux-kernel@...r.kernel.org>,
"Lad, Prabhakar" <prabhakar.csengg@...il.com>
Subject: [PATCH 1/2] media: davinci: vpif_capture: embed video_device struct in channel_obj
From: "Lad, Prabhakar" <prabhakar.csengg@...il.com>
Embed video_device struct (video_dev) in channel_obj and also the
Unregister path doesn't need to free the video_device structure,
hence, change the video_device.release callback point to
video_device_release_empty.
Signed-off-by: Lad, Prabhakar <prabhakar.csengg@...il.com>
---
drivers/media/platform/davinci/vpif_capture.c | 52 ++++++---------------------
drivers/media/platform/davinci/vpif_capture.h | 2 +-
2 files changed, 11 insertions(+), 43 deletions(-)
diff --git a/drivers/media/platform/davinci/vpif_capture.c b/drivers/media/platform/davinci/vpif_capture.c
index fa0a515..a5f5481 100644
--- a/drivers/media/platform/davinci/vpif_capture.c
+++ b/drivers/media/platform/davinci/vpif_capture.c
@@ -712,7 +712,7 @@ static int vpif_set_input(
ch->vpifparams.iface = chan_cfg->vpif_if;
/* update tvnorms from the sub device input info */
- ch->video_dev->tvnorms = chan_cfg->inputs[index].input.std;
+ ch->video_dev.tvnorms = chan_cfg->inputs[index].input.std;
return 0;
}
@@ -1337,7 +1337,7 @@ static int vpif_probe_complete(void)
struct video_device *vdev;
struct channel_obj *ch;
struct vb2_queue *q;
- int i, j, err, k;
+ int j, err, k;
for (j = 0; j < VPIF_CAPTURE_MAX_DEVICES; j++) {
ch = vpif_obj.dev[j];
@@ -1384,16 +1384,16 @@ static int vpif_probe_complete(void)
INIT_LIST_HEAD(&common->dma_queue);
/* Initialize the video_device structure */
- vdev = ch->video_dev;
+ vdev = &ch->video_dev;
strlcpy(vdev->name, VPIF_DRIVER_NAME, sizeof(vdev->name));
- vdev->release = video_device_release;
+ vdev->release = video_device_release_empty;
vdev->fops = &vpif_fops;
vdev->ioctl_ops = &vpif_ioctl_ops;
vdev->v4l2_dev = &vpif_obj.v4l2_dev;
vdev->vfl_dir = VFL_DIR_RX;
vdev->queue = q;
vdev->lock = &common->lock;
- video_set_drvdata(ch->video_dev, ch);
+ video_set_drvdata(&ch->video_dev, ch);
err = video_register_device(vdev,
VFL_TYPE_GRABBER, (j ? 1 : 0));
if (err)
@@ -1410,14 +1410,9 @@ probe_out:
common = &ch->common[k];
vb2_dma_contig_cleanup_ctx(common->alloc_ctx);
/* Unregister video device */
- video_unregister_device(ch->video_dev);
+ video_unregister_device(&ch->video_dev);
}
kfree(vpif_obj.sd);
- for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
- ch = vpif_obj.dev[i];
- /* Note: does nothing if ch->video_dev == NULL */
- video_device_release(ch->video_dev);
- }
v4l2_device_unregister(&vpif_obj.v4l2_dev);
return err;
@@ -1438,13 +1433,11 @@ static int vpif_async_complete(struct v4l2_async_notifier *notifier)
static __init int vpif_probe(struct platform_device *pdev)
{
struct vpif_subdev_info *subdevdata;
- int i, j, err;
- int res_idx = 0;
struct i2c_adapter *i2c_adap;
- struct channel_obj *ch;
- struct video_device *vfd;
struct resource *res;
int subdev_count;
+ int res_idx = 0;
+ int i, err;
vpif_dev = &pdev->dev;
@@ -1472,24 +1465,6 @@ static __init int vpif_probe(struct platform_device *pdev)
res_idx++;
}
- for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
- /* Get the pointer to the channel object */
- ch = vpif_obj.dev[i];
- /* Allocate memory for video device */
- vfd = video_device_alloc();
- if (NULL == vfd) {
- for (j = 0; j < i; j++) {
- ch = vpif_obj.dev[j];
- video_device_release(ch->video_dev);
- }
- err = -ENOMEM;
- goto vpif_unregister;
- }
-
- /* Set video_dev to the video device */
- ch->video_dev = vfd;
- }
-
vpif_obj.config = pdev->dev.platform_data;
subdev_count = vpif_obj.config->subdev_count;
@@ -1498,7 +1473,7 @@ static __init int vpif_probe(struct platform_device *pdev)
if (vpif_obj.sd == NULL) {
vpif_err("unable to allocate memory for subdevice pointers\n");
err = -ENOMEM;
- goto vpif_sd_error;
+ goto vpif_unregister;
}
if (!vpif_obj.config->asd_sizes) {
@@ -1541,13 +1516,6 @@ static __init int vpif_probe(struct platform_device *pdev)
probe_subdev_out:
/* free sub devices memory */
kfree(vpif_obj.sd);
-
-vpif_sd_error:
- for (i = 0; i < VPIF_CAPTURE_MAX_DEVICES; i++) {
- ch = vpif_obj.dev[i];
- /* Note: does nothing if ch->video_dev == NULL */
- video_device_release(ch->video_dev);
- }
vpif_unregister:
v4l2_device_unregister(&vpif_obj.v4l2_dev);
@@ -1576,7 +1544,7 @@ static int vpif_remove(struct platform_device *device)
common = &ch->common[VPIF_VIDEO_INDEX];
vb2_dma_contig_cleanup_ctx(common->alloc_ctx);
/* Unregister video device */
- video_unregister_device(ch->video_dev);
+ video_unregister_device(&ch->video_dev);
kfree(vpif_obj.dev[i]);
}
return 0;
diff --git a/drivers/media/platform/davinci/vpif_capture.h b/drivers/media/platform/davinci/vpif_capture.h
index f65d28d..8b8a663 100644
--- a/drivers/media/platform/davinci/vpif_capture.h
+++ b/drivers/media/platform/davinci/vpif_capture.h
@@ -92,7 +92,7 @@ struct common_obj {
struct channel_obj {
/* Identifies video device for this channel */
- struct video_device *video_dev;
+ struct video_device video_dev;
/* Indicates id of the field which is being displayed */
u32 field_id;
/* flag to indicate whether decoder is initialized */
--
2.1.0
--
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