diff options
-rw-r--r-- | drivers/staging/comedi/drivers/rti800.c | 41 |
1 files changed, 20 insertions, 21 deletions
diff --git a/drivers/staging/comedi/drivers/rti800.c b/drivers/staging/comedi/drivers/rti800.c index 2c9d05b..f2ee528 100644 --- a/drivers/staging/comedi/drivers/rti800.c +++ b/drivers/staging/comedi/drivers/rti800.c @@ -32,22 +32,22 @@ Configuration options: [0] - I/O port base address [1] - IRQ [2] - A/D reference - 0 = differential - 1 = pseudodifferential (common) - 2 = single-ended + 0 = differential + 1 = pseudodifferential (common) + 2 = single-ended [3] - A/D range - 0 = [-10,10] - 1 = [-5,5] - 2 = [0,10] + 0 = [-10,10] + 1 = [-5,5] + 2 = [0,10] [4] - A/D encoding - 0 = two's complement - 1 = straight binary + 0 = two's complement + 1 = straight binary [5] - DAC 0 range - 0 = [-10,10] - 1 = [0,10] + 0 = [-10,10] + 1 = [0,10] [6] - DAC 0 encoding - 0 = two's complement - 1 = straight binary + 0 = two's complement + 1 = straight binary [7] - DAC 1 range (same as DAC 0) [8] - DAC 1 encoding (same as DAC 0) */ @@ -240,9 +240,8 @@ static int rti800_ai_insn_read(struct comedi_device *dev, data[i] = inb(dev->iobase + RTI800_ADCLO); data[i] |= (0xf & inb(dev->iobase + RTI800_ADCHI)) << 8; - if (devpriv->adc_coding == adc_2comp) { + if (devpriv->adc_coding == adc_2comp) data[i] ^= 0x800; - } } return i; @@ -271,9 +270,9 @@ static int rti800_ao_insn_write(struct comedi_device *dev, for (i = 0; i < insn->n; i++) { devpriv->ao_readback[chan] = d = data[i]; - if (devpriv->dac0_coding == dac_2comp) { + if (devpriv->dac0_coding == dac_2comp) d ^= 0x800; - } + outb(d & 0xff, dev->iobase + (chan ? RTI800_DAC1LO : RTI800_DAC0LO)); outb(d >> 8, @@ -315,15 +314,15 @@ static int rti800_do_insn_bits(struct comedi_device *dev, options[0] - I/O port options[1] - irq options[2] - a/d mux - 0=differential, 1=pseudodiff, 2=single + 0=differential, 1=pseudodiff, 2=single options[3] - a/d range - 0=bipolar10, 1=bipolar5, 2=unipolar10 + 0=bipolar10, 1=bipolar5, 2=unipolar10 options[4] - a/d coding - 0=2's comp, 1=straight binary + 0=2's comp, 1=straight binary options[5] - dac0 range - 0=bipolar10, 1=unipolar10 + 0=bipolar10, 1=unipolar10 options[6] - dac0 coding - 0=2's comp, 1=straight binary + 0=2's comp, 1=straight binary options[7] - dac1 range options[8] - dac1 coding */ |