diff options
| author | Mike Isely <isely@pobox.com> | 2007-11-26 02:07:26 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2008-01-25 19:03:05 -0200 |
| commit | f5174af201f2e22c101bb02d06343e4bc5f056de (patch) | |
| tree | a13e51ad387953b17f11360a5cb89d8abc0ea551 /drivers/media/video/pvrusb2/pvrusb2-devattr.h | |
| parent | aaf7884db395332ae8474f3ea5bcdd39c0a941ea (diff) | |
V4L/DVB (6698): pvrusb2: Implement signal routing schemes
The exact routing of video and audio signals within a device is a
device-specific attribute. Hauppauge devices do it one way; other
types of device may route things differently. Unfortunately it is
rather impractical to define chip-specific routing at the device
attribute level, so instead what happens here is that "schemes" are
defined. Each chip level interface implements its part of a given
scheme and the scheme as a whole is made into a device specific
attribute controlled via a table entry in pvrusb2-devattr.c. The only
scheme defined here is for Hauppauge devices, but clearly this opens
the door for other possibilities to follow.
Signed-off-by: Mike Isely <isely@pobox.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'drivers/media/video/pvrusb2/pvrusb2-devattr.h')
| -rw-r--r-- | drivers/media/video/pvrusb2/pvrusb2-devattr.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/media/video/pvrusb2/pvrusb2-devattr.h b/drivers/media/video/pvrusb2/pvrusb2-devattr.h index f63c3ddb8a7..05eb2c669ee 100644 --- a/drivers/media/video/pvrusb2/pvrusb2-devattr.h +++ b/drivers/media/video/pvrusb2/pvrusb2-devattr.h @@ -35,6 +35,7 @@ struct pvr2_string_table { unsigned int cnt; }; +#define PVR2_ROUTING_SCHEME_HAUPPAUGE 0 /* This describes a particular hardware type (except for the USB device ID which must live in a separate structure due to environmental @@ -55,6 +56,14 @@ struct pvr2_device_desc { was initialized from internal ROM. */ struct pvr2_string_table fx2_firmware; + /* Signal routing scheme used by device, contains one of + PVR2_ROUTING_SCHEME_XXX. Schemes have to be defined as we + encounter them. This is an arbitrary integer scheme id; its + meaning is contained entirely within the driver and is + interpreted by logic which must send commands to the chip-level + drivers (search for things which touch this field). */ + unsigned int signal_routing_scheme; + /* V4L tuner type ID to use with this device (only used if the driver could not discover the type any other way). */ int default_tuner_type; |