diff options
| author | Ian Abbott <abbotti@mev.co.uk> | 2014-11-04 18:09:01 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-11-05 14:52:18 -0800 |
| commit | c299a6789c35392dcd66f806013bab86969cf5c4 (patch) | |
| tree | 7fe4aac56d9de920b0c2779ee1940bd793f1bf7c /drivers/staging/comedi/comedi.h | |
| parent | 20f083c07565cb75a5f04e97acfc8faff2b13101 (diff) | |
staging: comedi: add ioctls to set per-file read and write subdevice
Now that Comedi has the structures in place to support setting the
current "read" and/or "write" subdevice on a per-file object basis, add
new ioctls to set them. The newly chosen "read" ("write") subdevice
needs to support "read" ("write") commands, and the file cannot be busy
handling a "read" ("write") command on the previous subdevice (if any).
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Reviewed-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/comedi/comedi.h')
| -rw-r--r-- | drivers/staging/comedi/comedi.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/staging/comedi/comedi.h b/drivers/staging/comedi/comedi.h index f302ce6c93de..745574077352 100644 --- a/drivers/staging/comedi/comedi.h +++ b/drivers/staging/comedi/comedi.h @@ -367,6 +367,8 @@ enum comedi_support_level { #define COMEDI_BUFCONFIG _IOR(CIO, 13, struct comedi_bufconfig) #define COMEDI_BUFINFO _IOWR(CIO, 14, struct comedi_bufinfo) #define COMEDI_POLL _IO(CIO, 15) +#define COMEDI_SETRSUBD _IO(CIO, 16) +#define COMEDI_SETWSUBD _IO(CIO, 17) /* structures */ |