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[media] v4l2-mc: add an ancillary routine for PCI-based MC

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Instead of copyping the same code on all PCI devices that
would have a media controller, add a core ancillary routine.

Signed-off-by: Mauro Carvalho Chehab <[email protected]>
This commit is contained in:
Mauro Carvalho Chehab 2016-02-05 13:16:18 -02:00
commit 7047f2982a
2 changed files with 58 additions and 1 deletions
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24
include/media/v4l2-mc.h
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@ -92,6 +92,10 @@ enum demod_pad_index {
DEMOD_NUM_PADS
};
struct pci_dev; /* We don't need to include pci.h here */
#ifdef CONFIG_MEDIA_CONTROLLER
/**
* v4l2_mc_create_media_graph() - create Media Controller links at the graph.
*
@ -106,11 +110,29 @@ enum demod_pad_index {
* interface centric PC-consumer's hardware, V4L2 subdev centric camera
* hardware should not use this routine, as it will not build the right graph.
*/
#ifdef CONFIG_MEDIA_CONTROLLER
int v4l2_mc_create_media_graph(struct media_device *mdev);
/**
* v4l2_mc_pci_media_device_init() - create and initialize a
* struct &media_device from a PCI device.
*
* @pci_dev: pointer to struct pci_dev
* @name: media device name. If %NULL, the routine will use the default
* name for the pci device, given by pci_name() macro.
*/
struct media_device *v4l2_mc_pci_media_device_init(struct pci_dev *pci_dev,
char *name);
#else
static inline int v4l2_mc_create_media_graph(struct media_device *mdev)
{
return 0;
}
struct media_device *v4l2_mc_pci_media_device_init(struct pci_dev *pci_dev,
char *name) {
return NULL;
}
#endif