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| author | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-05-02 15:12:50 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-05-02 15:12:50 +0200 |
| commit | 79d2addf97397ee580b80f71343cf72b03da65a2 (patch) | |
| tree | 3659369523acd92f172a36132f559078d2800a74 /linux/Documentation/video4linux/v4l2-framework.txt | |
| parent | 83d87c0c4e7849713db298cea21c964f85313f3b (diff) | |
| download | mediapointer-dvb-s2-79d2addf97397ee580b80f71343cf72b03da65a2.tar.gz mediapointer-dvb-s2-79d2addf97397ee580b80f71343cf72b03da65a2.tar.bz2 | |
v4l2: add v4l2_device_set_name()
From: Hans Verkuil <hverkuil@xs4all.nl>
Add a utility function that can be used to setup the v4l2_device's name
field in a standard manner.
Priority: normal
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'linux/Documentation/video4linux/v4l2-framework.txt')
| -rw-r--r-- | linux/Documentation/video4linux/v4l2-framework.txt | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/linux/Documentation/video4linux/v4l2-framework.txt b/linux/Documentation/video4linux/v4l2-framework.txt index 854808b67..d54c1e4c6 100644 --- a/linux/Documentation/video4linux/v4l2-framework.txt +++ b/linux/Documentation/video4linux/v4l2-framework.txt @@ -89,6 +89,11 @@ from dev (driver name followed by the bus_id, to be precise). If you set it up before calling v4l2_device_register then it will be untouched. If dev is NULL, then you *must* setup v4l2_dev->name before calling v4l2_device_register. +You can use v4l2_device_set_name() to set the name based on a driver name and +a driver-global atomic_t instance. This will generate names like ivtv0, ivtv1, +etc. If the name ends with a digit, then it will insert a dash: cx18-0, +cx18-1, etc. This function returns the instance number. + The first 'dev' argument is normally the struct device pointer of a pci_dev, usb_interface or platform_device. It is rare for dev to be NULL, but it happens with ISA devices or when one device creates multiple PCI devices, thus making |