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staging: comedi: vmk80xx: cleanup pwm subdevice init

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Change the 'pwm_bits' in the boardinfo to 'pwm_maxdata' so that the
calculation of s->maxdata can be removed. Also, change the type to
match the comedi_subdevice type. For aesthetic reasons, rename the
'pwm_chans' boardinfo and change its type also.

Remove the '0' values in the boardinfo.

Rename the (*insn_read) and (*insn_write) functions for the pwm
subdevice 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>
This commit is contained in:
H Hartley Sweeten 2013-02-05 17:27:56 -07:00 committed by Greg Kroah-Hartman
parent 75a45d924d
commit 9a23a7481e
1 changed files with 18 additions and 18 deletions
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36
drivers/staging/comedi/drivers/vmk80xx.c
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@ -164,8 +164,8 @@ struct vmk80xx_board {
int ao_nchans;
int di_nchans;
unsigned int cnt_maxdata;
__u8 pwm_chans;
__le16 pwm_bits;
int pwm_nchans;
unsigned int pwm_maxdata;
};
static const struct vmk80xx_board vmk80xx_boardinfo[] = {
@ -178,8 +178,6 @@ static const struct vmk80xx_board vmk80xx_boardinfo[] = {
.ao_nchans = 2,
.di_nchans = 6,
.cnt_maxdata = 0xffff,
.pwm_chans = 0,
.pwm_bits = 0,
},
[DEVICE_VMK8061] = {
.name = "K8061 (VM140)",
@ -190,8 +188,8 @@ static const struct vmk80xx_board vmk80xx_boardinfo[] = {
.ao_nchans = 8,
.di_nchans = 8,
.cnt_maxdata = 0, /* unknown, device is not writeable */
.pwm_chans = 1,
.pwm_bits = 10,
.pwm_nchans = 1,
.pwm_maxdata = 0x03ff,
},
};
@ -1043,9 +1041,10 @@ static int vmk80xx_cnt_insn_write(struct comedi_device *dev,
return n;
}
static int vmk80xx_pwm_rinsn(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data)
static int vmk80xx_pwm_insn_read(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
unsigned int *data)
{
struct vmk80xx_private *devpriv = dev->private;
unsigned char *tx_buf;
@ -1079,9 +1078,10 @@ static int vmk80xx_pwm_rinsn(struct comedi_device *dev,
return n;
}
static int vmk80xx_pwm_winsn(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn, unsigned int *data)
static int vmk80xx_pwm_insn_write(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
unsigned int *data)
{
struct vmk80xx_private *devpriv = dev->private;
unsigned char *tx_buf;
@ -1265,12 +1265,12 @@ static int vmk80xx_attach_common(struct comedi_device *dev)
/* PWM subdevice */
if (devpriv->model == VMK8061_MODEL) {
s = &dev->subdevices[5];
s->type = COMEDI_SUBD_PWM;
s->subdev_flags = SDF_READABLE | SDF_WRITEABLE;
s->n_chan = boardinfo->pwm_chans;
s->maxdata = (1 << boardinfo->pwm_bits) - 1;
s->insn_read = vmk80xx_pwm_rinsn;
s->insn_write = vmk80xx_pwm_winsn;
s->type = COMEDI_SUBD_PWM;
s->subdev_flags = SDF_READABLE | SDF_WRITEABLE;
s->n_chan = boardinfo->pwm_nchans;
s->maxdata = boardinfo->pwm_maxdata;
s->insn_read = vmk80xx_pwm_insn_read;
s->insn_write = vmk80xx_pwm_insn_write;
}
up(&devpriv->limit_sem);