diff options
Diffstat (limited to 'drivers/staging/comedi/drivers/pcl711.c')
-rw-r--r-- | drivers/staging/comedi/drivers/pcl711.c | 42 |
1 files changed, 12 insertions, 30 deletions
diff --git a/drivers/staging/comedi/drivers/pcl711.c b/drivers/staging/comedi/drivers/pcl711.c index 40f9136f0bb6..47f4887108a7 100644 --- a/drivers/staging/comedi/drivers/pcl711.c +++ b/drivers/staging/comedi/drivers/pcl711.c @@ -157,7 +157,6 @@ static const struct pcl711_board boardtypes[] = { struct pcl711_private { unsigned int ntrig; - unsigned int ao_readback[2]; unsigned int divisor1; unsigned int divisor2; }; @@ -335,7 +334,9 @@ static int pcl711_ai_cmdtest(struct comedi_device *dev, err |= cfc_check_trigger_arg_is(&cmd->convert_arg, 0); err |= cfc_check_trigger_arg_is(&cmd->scan_end_arg, cmd->chanlist_len); - if (cmd->stop_src == TRIG_NONE) + if (cmd->stop_src == TRIG_COUNT) + err |= cfc_check_trigger_arg_min(&cmd->stop_arg, 1); + else /* TRIG_NONE */ err |= cfc_check_trigger_arg_is(&cmd->stop_arg, 0); if (err) @@ -377,15 +378,8 @@ static int pcl711_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s) pcl711_set_changain(dev, s, cmd->chanlist[0]); - if (cmd->stop_src == TRIG_COUNT) { - if (cmd->stop_arg == 0) { - /* an empty acquisition */ - s->async->events |= COMEDI_CB_EOA; - comedi_event(dev, s); - return 0; - } + if (cmd->stop_src == TRIG_COUNT) devpriv->ntrig = cmd->stop_arg; - } if (cmd->scan_begin_src == TRIG_TIMER) { pcl711_ai_load_counters(dev); @@ -410,31 +404,15 @@ static int pcl711_ao_insn_write(struct comedi_device *dev, struct comedi_insn *insn, unsigned int *data) { - struct pcl711_private *devpriv = dev->private; unsigned int chan = CR_CHAN(insn->chanspec); - unsigned int val = devpriv->ao_readback[chan]; + unsigned int val = s->readback[chan]; int i; for (i = 0; i < insn->n; i++) { val = data[i]; pcl711_ao_write(dev, chan, val); } - devpriv->ao_readback[chan] = val; - - return insn->n; -} - -static int pcl711_ao_insn_read(struct comedi_device *dev, - struct comedi_subdevice *s, - struct comedi_insn *insn, - unsigned int *data) -{ - struct pcl711_private *devpriv = dev->private; - unsigned int chan = CR_CHAN(insn->chanspec); - int i; - - for (i = 0; i < insn->n; i++) - data[i] = devpriv->ao_readback[chan]; + s->readback[chan] = val; return insn->n; } @@ -476,7 +454,7 @@ static int pcl711_do_insn_bits(struct comedi_device *dev, static int pcl711_attach(struct comedi_device *dev, struct comedi_devconfig *it) { - const struct pcl711_board *board = comedi_board(dev); + const struct pcl711_board *board = dev->board_ptr; struct pcl711_private *devpriv; struct comedi_subdevice *s; int ret; @@ -527,7 +505,11 @@ static int pcl711_attach(struct comedi_device *dev, struct comedi_devconfig *it) s->maxdata = 0xfff; s->range_table = &range_bipolar5; s->insn_write = pcl711_ao_insn_write; - s->insn_read = pcl711_ao_insn_read; + s->insn_read = comedi_readback_insn_read; + + ret = comedi_alloc_subdev_readback(s); + if (ret) + return ret; /* Digital Input subdevice */ s = &dev->subdevices[2]; |