staging: comedi: addi_apci_3501: cleanup the digital output subdevice
The board supported by this driver has 2 digital outputs. Remove the
conditional and always init the subdevice.
Also, move the subdevice insn_bits function pointer as well as the
n_chan out of the boardinfo and use them to initialize the subdevice
directly.
Since devpriv->s_EeParameters for the digital output subdevice are no
longer being used, remove initialization of them also.
Copy the apci3501_do_insn_bits() function from hwrdv_apci3501.c into
the main driver file.
Fix the subdev_flags for the subdevice. The only required flag is
SDF_WRITEABLE. The SDF_GROUND and SDF_COMMON flags only have meaning
for analog subdevices and the SDF_READABLE flag is not required.
Fix the maxdata for the subdevice. Digital outputs can only be 1 or 0.
Remove the len_chanlist initialization, it only has meaning for subdevices
that support commands.
Remove the io_bits initialization, it only has meaning for digital i/o
subdevices that have configurable outputs.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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