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[media] media: Move media_device link_notify operation to an ops structure 

This will allow adding new operations without increasing the
media_device structure size for drivers that don't implement any media
device operation.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Laurent Pinchart 2015-11-03 00:27:51 -02:00 committed by Mauro Carvalho Chehab
parent dc3cdbc9d4
commit 68429f50ab
5 changed files with 33 additions and 12 deletions
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11
drivers/media/media-entity.c
View File

@ -808,17 +808,18 @@ int __media_entity_setup_link(struct media_link *link, u32 flags)
mdev = source->graph_obj.mdev;
if (mdev->link_notify) {
ret = mdev->link_notify(link, flags,
MEDIA_DEV_NOTIFY_PRE_LINK_CH);
if (mdev->ops && mdev->ops->link_notify) {
ret = mdev->ops->link_notify(link, flags,
MEDIA_DEV_NOTIFY_PRE_LINK_CH);
if (ret < 0)
return ret;
}
ret = __media_entity_setup_link_notify(link, flags);
if (mdev->link_notify)
mdev->link_notify(link, flags, MEDIA_DEV_NOTIFY_POST_LINK_CH);
if (mdev->ops && mdev->ops->link_notify)
mdev->ops->link_notify(link, flags,
MEDIA_DEV_NOTIFY_POST_LINK_CH);
return ret;
}

6
drivers/media/platform/exynos4-is/media-dev.c
View File

@ -1190,6 +1190,10 @@ static int fimc_md_link_notify(struct media_link *link, unsigned int flags,
return ret ? -EPIPE : 0;
}
static const struct media_device_ops fimc_md_ops = {
.link_notify = fimc_md_link_notify,
};
static ssize_t fimc_md_sysfs_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
@ -1416,7 +1420,7 @@ static int fimc_md_probe(struct platform_device *pdev)
strlcpy(fmd->media_dev.model, "SAMSUNG S5P FIMC",
sizeof(fmd->media_dev.model));
fmd->media_dev.link_notify = fimc_md_link_notify;
fmd->media_dev.ops = &fimc_md_ops;
fmd->media_dev.dev = dev;
v4l2_dev = &fmd->v4l2_dev;

6
drivers/media/platform/omap3isp/isp.c
View File

@ -657,6 +657,10 @@ static irqreturn_t isp_isr(int irq, void *_isp)
return IRQ_HANDLED;
}
static const struct media_device_ops isp_media_ops = {
.link_notify = v4l2_pipeline_link_notify,
};
/* -----------------------------------------------------------------------------
* Pipeline stream management
*/
@ -1680,7 +1684,7 @@ static int isp_register_entities(struct isp_device *isp)
strlcpy(isp->media_dev.model, "TI OMAP3 ISP",
sizeof(isp->media_dev.model));
isp->media_dev.hw_revision = isp->revision;
isp->media_dev.link_notify = v4l2_pipeline_link_notify;
isp->media_dev.ops = &isp_media_ops;
media_device_init(&isp->media_dev);
isp->v4l2_dev.mdev = &isp->media_dev;

6
drivers/staging/media/omap4iss/iss.c
View File

@ -362,6 +362,10 @@ static irqreturn_t iss_isr(int irq, void *_iss)
return IRQ_HANDLED;
}
static const struct media_device_ops iss_media_ops = {
.link_notify = v4l2_pipeline_link_notify,
};
/* -----------------------------------------------------------------------------
* Pipeline stream management
*/
@ -988,7 +992,7 @@ static int iss_register_entities(struct iss_device *iss)
strlcpy(iss->media_dev.model, "TI OMAP4 ISS",
sizeof(iss->media_dev.model));
iss->media_dev.hw_revision = iss->revision;
iss->media_dev.link_notify = v4l2_pipeline_link_notify;
iss->media_dev.ops = &iss_media_ops;
ret = media_device_register(&iss->media_dev);
if (ret < 0) {
dev_err(iss->dev, "Media device registration failed (%d)\n",

16
include/media/media-device.h
View File

@ -48,6 +48,16 @@ struct media_entity_notify {
void (*notify)(struct media_entity *entity, void *notify_data);
};
/**
* struct media_device_ops - Media device operations
* @link_notify: Link state change notification callback. This callback is
* called with the graph_mutex held.
*/
struct media_device_ops {
int (*link_notify)(struct media_link *link, u32 flags,
unsigned int notification);
};
/**
* struct media_device - Media device
* @dev: Parent device
@ -80,8 +90,7 @@ struct media_entity_notify {
* @enable_source: Enable Source Handler function pointer
* @disable_source: Disable Source Handler function pointer
*
* @link_notify: Link state change notification callback. This callback is
* called with the graph_mutex held.
* @ops: Operation handler callbacks
*
* This structure represents an abstract high-level media device. It allows easy
* access to entities and provides basic media device-level support. The
@ -150,8 +159,7 @@ struct media_device {
struct media_pipeline *pipe);
void (*disable_source)(struct media_entity *entity);
int (*link_notify)(struct media_link *link, u32 flags,
unsigned int notification);
const struct media_device_ops *ops;
};
/* We don't need to include pci.h or usb.h here */