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| author | H Hartley Sweeten <hsweeten@visionengravers.com> | 2013-02-05 17:24:45 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-02-05 18:07:11 -0800 |
| commit | 658cd3ac2e31d637f50402611976bdaab74c28f8 (patch) | |
| tree | b145a7ba75637abb84a89c926b3f234dfea453df /drivers | |
| parent | 52d895d3672dd58c0067c2efca4b825e4d733d0c (diff) | |
| download | lwn-658cd3ac2e31d637f50402611976bdaab74c28f8.tar.gz lwn-658cd3ac2e31d637f50402611976bdaab74c28f8.zip | |
staging: comedi: vmk80xx: cleanup analog input subdevice init
Change the 'ai_bits' in the boardinfo to 'ai_maxdata' so that the
calculation of s->maxdata can be removed.
Change the types for the analog input boardinfo to match the
comedi_subdevice types they are set to.
Rename the (*insn_read) function for the analog input subdevice from
vmk80xx_ai_rinsn to vmk80xx_ai_insn_read to make grepping easier.
For aesthetic reasons, add some whitespace to the subdevice init.
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/staging/comedi/drivers/vmk80xx.c | 31 |
1 files changed, 16 insertions, 15 deletions
diff --git a/drivers/staging/comedi/drivers/vmk80xx.c b/drivers/staging/comedi/drivers/vmk80xx.c index 80864a7c7260..9eae0a06cc72 100644 --- a/drivers/staging/comedi/drivers/vmk80xx.c +++ b/drivers/staging/comedi/drivers/vmk80xx.c @@ -159,8 +159,8 @@ struct vmk80xx_board { const char *name; enum vmk80xx_model model; const struct comedi_lrange *range; - __u8 ai_chans; - __le16 ai_bits; + int ai_nchans; + unsigned int ai_maxdata; __u8 ao_chans; __u8 di_chans; __le16 cnt_bits; @@ -173,8 +173,8 @@ static const struct vmk80xx_board vmk80xx_boardinfo[] = { .name = "K8055 (VM110)", .model = VMK8055_MODEL, .range = &vmk8055_range, - .ai_chans = 2, - .ai_bits = 8, + .ai_nchans = 2, + .ai_maxdata = 0x00ff, .ao_chans = 2, .di_chans = 6, .cnt_bits = 16, @@ -185,8 +185,8 @@ static const struct vmk80xx_board vmk80xx_boardinfo[] = { .name = "K8061 (VM140)", .model = VMK8061_MODEL, .range = &vmk8061_range, - .ai_chans = 8, - .ai_bits = 10, + .ai_nchans = 8, + .ai_maxdata = 0x03ff, .ao_chans = 8, .di_chans = 8, .cnt_bits = 0, @@ -533,9 +533,10 @@ static int rudimentary_check(struct vmk80xx_private *devpriv, int dir) return 0; } -static int vmk80xx_ai_rinsn(struct comedi_device *dev, - struct comedi_subdevice *s, - struct comedi_insn *insn, unsigned int *data) +static int vmk80xx_ai_insn_read(struct comedi_device *dev, + struct comedi_subdevice *s, + struct comedi_insn *insn, + unsigned int *data) { struct vmk80xx_private *devpriv = dev->private; int chan; @@ -1194,12 +1195,12 @@ static int vmk80xx_attach_common(struct comedi_device *dev) /* Analog input subdevice */ s = &dev->subdevices[0]; - s->type = COMEDI_SUBD_AI; - s->subdev_flags = SDF_READABLE | SDF_GROUND; - s->n_chan = boardinfo->ai_chans; - s->maxdata = (1 << boardinfo->ai_bits) - 1; - s->range_table = boardinfo->range; - s->insn_read = vmk80xx_ai_rinsn; + s->type = COMEDI_SUBD_AI; + s->subdev_flags = SDF_READABLE | SDF_GROUND; + s->n_chan = boardinfo->ai_nchans; + s->maxdata = boardinfo->ai_maxdata; + s->range_table = boardinfo->range; + s->insn_read = vmk80xx_ai_insn_read; /* Analog output subdevice */ s = &dev->subdevices[1]; |