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| author | H Hartley Sweeten <hsweeten@visionengravers.com> | 2013-04-09 23:05:54 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-04-11 19:47:35 (GMT) |
| commit | f375ac5f197d32aeffe5436e5864525cc14ce44a (patch) | |
| tree | b88e0220afd6049b76f2a403109c5bb53fd667ba /drivers/staging/comedi/comedidev.h | |
| parent | aa7a82b9f941f1e299bf9b26dcd8bb76ecce3c8f (diff) | |
| download | linux-fsl-qoriq-f375ac5f197d32aeffe5436e5864525cc14ce44a.tar.xz | |
staging: comedi: drivers: introduce comedi_request_region()
Introduce a helper function to handle the request_region() for legacy
comedi drivers.
As pointed out by Ian Abbott, legacy devices are configured manually
with the "comedi_config" program. The error messages are useful
diagnostics when trying to attach to these boards.
Providing a helper function allows consolidating the error messages
in the drivers and providing a consistent format for the errors.
This helper also sets the dev->iobase automatically for the driver
if the request_region() is successful.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/comedi/comedidev.h')
| -rw-r--r-- | drivers/staging/comedi/comedidev.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/staging/comedi/comedidev.h b/drivers/staging/comedi/comedidev.h index 060d450..77ea996 100644 --- a/drivers/staging/comedi/comedidev.h +++ b/drivers/staging/comedi/comedidev.h @@ -348,6 +348,9 @@ void comedi_buf_memcpy_from(struct comedi_async *async, unsigned int offset, int comedi_alloc_subdevices(struct comedi_device *, int); +int comedi_request_region(struct comedi_device *, + unsigned long start, unsigned long len); + int comedi_auto_config(struct device *, struct comedi_driver *, unsigned long context); void comedi_auto_unconfig(struct device *); |