diff options
Diffstat (limited to 'drivers/staging/comedi/drivers/quatech_daqp_cs.c')
-rw-r--r-- | drivers/staging/comedi/drivers/quatech_daqp_cs.c | 38 |
1 files changed, 18 insertions, 20 deletions
diff --git a/drivers/staging/comedi/drivers/quatech_daqp_cs.c b/drivers/staging/comedi/drivers/quatech_daqp_cs.c index 6407df0404f0..96098110b0b3 100644 --- a/drivers/staging/comedi/drivers/quatech_daqp_cs.c +++ b/drivers/staging/comedi/drivers/quatech_daqp_cs.c @@ -65,8 +65,6 @@ struct daqp_private { enum { semaphore, buffer } interrupt_mode; struct completion eos; - - int count; }; /* The DAQP communicates with the system through a 16 byte I/O window. */ @@ -194,6 +192,7 @@ static enum irqreturn daqp_interrupt(int irq, void *dev_id) struct comedi_device *dev = dev_id; struct daqp_private *devpriv = dev->private; struct comedi_subdevice *s = dev->read_subdev; + struct comedi_cmd *cmd = &s->async->cmd; int loop_limit = 10000; int status; @@ -221,18 +220,16 @@ static enum irqreturn daqp_interrupt(int irq, void *dev_id) data |= inb(dev->iobase + DAQP_FIFO) << 8; data ^= 0x8000; - comedi_buf_put(s, data); + comedi_buf_write_samples(s, &data, 1); /* If there's a limit, decrement it * and stop conversion if zero */ - if (devpriv->count > 0) { - devpriv->count--; - if (devpriv->count == 0) { - s->async->events |= COMEDI_CB_EOA; - break; - } + if (cmd->stop_src == TRIG_COUNT && + s->async->scans_done >= cmd->stop_arg) { + s->async->events |= COMEDI_CB_EOA; + break; } if ((loop_limit--) <= 0) @@ -245,9 +242,7 @@ static enum irqreturn daqp_interrupt(int irq, void *dev_id) s->async->events |= COMEDI_CB_EOA | COMEDI_CB_ERROR; } - s->async->events |= COMEDI_CB_BLOCK; - - cfc_handle_events(dev, s); + comedi_handle_events(dev, s); } return IRQ_HANDLED; } @@ -575,12 +570,16 @@ static int daqp_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s) */ if (cmd->stop_src == TRIG_COUNT) { - devpriv->count = cmd->stop_arg * cmd->scan_end_arg; - threshold = 2 * devpriv->count; - while (threshold > DAQP_FIFO_SIZE * 3 / 4) - threshold /= 2; + unsigned long long nsamples; + unsigned long long nbytes; + + nsamples = (unsigned long long)cmd->stop_arg * + cmd->scan_end_arg; + nbytes = nsamples * comedi_bytes_per_sample(s); + while (nbytes > DAQP_FIFO_SIZE * 3 / 4) + nbytes /= 2; + threshold = nbytes; } else { - devpriv->count = -1; threshold = DAQP_FIFO_SIZE / 2; } @@ -736,12 +735,11 @@ static int daqp_auto_attach(struct comedi_device *dev, s = &dev->subdevices[1]; s->type = COMEDI_SUBD_AO; - s->subdev_flags = SDF_WRITEABLE; + s->subdev_flags = SDF_WRITABLE; s->n_chan = 2; s->maxdata = 0x0fff; s->range_table = &range_bipolar5; s->insn_write = daqp_ao_insn_write; - s->insn_read = comedi_readback_insn_read; ret = comedi_alloc_subdev_readback(s); if (ret) @@ -756,7 +754,7 @@ static int daqp_auto_attach(struct comedi_device *dev, s = &dev->subdevices[3]; s->type = COMEDI_SUBD_DO; - s->subdev_flags = SDF_WRITEABLE; + s->subdev_flags = SDF_WRITABLE; s->n_chan = 1; s->maxdata = 1; s->insn_bits = daqp_do_insn_bits; |