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staging: comedi: ni_labpc: introduce labpc_setup_cmd6_reg()

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Introduce a helper function to set the COMMAND6_REG.

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 2013-03-22 09:49:34 -07:00 committed by Greg Kroah-Hartman
parent 8a498667b6
commit 359553bb3b
1 changed files with 53 additions and 51 deletions
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104
drivers/staging/comedi/drivers/ni_labpc.c
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@ -389,6 +389,53 @@ static void labpc_ai_set_chan_and_gain(struct comedi_device *dev,
devpriv->write_byte(devpriv->cmd1, dev->iobase + COMMAND1_REG);
}
static void labpc_setup_cmd6_reg(struct comedi_device *dev,
struct comedi_subdevice *s,
enum scan_mode mode,
enum transfer_type xfer,
unsigned int range,
unsigned int aref,
bool ena_intr)
{
const struct labpc_boardinfo *board = comedi_board(dev);
struct labpc_private *devpriv = dev->private;
if (board->register_layout != labpc_1200_layout)
return;
/* reference inputs to ground or common? */
if (aref != AREF_GROUND)
devpriv->cmd6 |= ADC_COMMON_BIT;
else
devpriv->cmd6 &= ~ADC_COMMON_BIT;
/* bipolar or unipolar range? */
if (labpc_range_is_unipolar(s, range))
devpriv->cmd6 |= ADC_UNIP_BIT;
else
devpriv->cmd6 &= ~ADC_UNIP_BIT;
/* interrupt on fifo half full? */
if (xfer == fifo_half_full_transfer)
devpriv->cmd6 |= ADC_FHF_INTR_EN_BIT;
else
devpriv->cmd6 &= ~ADC_FHF_INTR_EN_BIT;
/* enable interrupt on counter a1 terminal count? */
if (ena_intr)
devpriv->cmd6 |= A1_INTR_EN_BIT;
else
devpriv->cmd6 &= ~A1_INTR_EN_BIT;
/* are we scanning up or down through channels? */
if (mode == MODE_MULT_CHAN_UP)
devpriv->cmd6 |= ADC_SCAN_UP_BIT;
else
devpriv->cmd6 &= ~ADC_SCAN_UP_BIT;
devpriv->write_byte(devpriv->cmd6, dev->iobase + COMMAND6_REG);
}
static void labpc_clear_adc_fifo(const struct comedi_device *dev)
{
struct labpc_private *devpriv = dev->private;
@ -403,7 +450,6 @@ static int labpc_ai_insn_read(struct comedi_device *dev,
struct comedi_insn *insn,
unsigned int *data)
{
const struct labpc_boardinfo *board = comedi_board(dev);
struct labpc_private *devpriv = dev->private;
unsigned int chan = CR_CHAN(insn->chanspec);
unsigned int range = CR_RANGE(insn->chanspec);
@ -417,25 +463,9 @@ static int labpc_ai_insn_read(struct comedi_device *dev,
labpc_ai_set_chan_and_gain(dev, MODE_SINGLE_CHAN, chan, range, aref);
/* setup cmd6 register for 1200 boards */
if (board->register_layout == labpc_1200_layout) {
/* reference inputs to ground or common? */
if (aref != AREF_GROUND)
devpriv->cmd6 |= ADC_COMMON_BIT;
else
devpriv->cmd6 &= ~ADC_COMMON_BIT;
/* bipolar or unipolar range? */
if (labpc_range_is_unipolar(s, range))
devpriv->cmd6 |= ADC_UNIP_BIT;
else
devpriv->cmd6 &= ~ADC_UNIP_BIT;
/* don't interrupt on fifo half full */
devpriv->cmd6 &= ~ADC_FHF_INTR_EN_BIT;
/* don't enable interrupt on counter a1 terminal count? */
devpriv->cmd6 &= ~A1_INTR_EN_BIT;
/* write to register */
devpriv->write_byte(devpriv->cmd6, dev->iobase + COMMAND6_REG);
}
labpc_setup_cmd6_reg(dev, s, MODE_SINGLE_CHAN, fifo_not_empty_transfer,
range, aref, false);
/* setup cmd4 register */
devpriv->cmd4 = 0;
devpriv->cmd4 |= EXT_CONVERT_DISABLE_BIT;
@ -933,39 +963,11 @@ static int labpc_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
xfer = fifo_not_empty_transfer;
devpriv->current_transfer = xfer;
/* setup cmd6 register for 1200 boards */
if (board->register_layout == labpc_1200_layout) {
/* reference inputs to ground or common? */
if (aref != AREF_GROUND)
devpriv->cmd6 |= ADC_COMMON_BIT;
else
devpriv->cmd6 &= ~ADC_COMMON_BIT;
/* bipolar or unipolar range? */
if (labpc_range_is_unipolar(s, range))
devpriv->cmd6 |= ADC_UNIP_BIT;
else
devpriv->cmd6 &= ~ADC_UNIP_BIT;
/* interrupt on fifo half full? */
if (xfer == fifo_half_full_transfer)
devpriv->cmd6 |= ADC_FHF_INTR_EN_BIT;
else
devpriv->cmd6 &= ~ADC_FHF_INTR_EN_BIT;
/* enable interrupt on counter a1 terminal count? */
if (cmd->stop_src == TRIG_EXT)
devpriv->cmd6 |= A1_INTR_EN_BIT;
else
devpriv->cmd6 &= ~A1_INTR_EN_BIT;
/* are we scanning up or down through channels? */
if (mode == MODE_MULT_CHAN_UP)
devpriv->cmd6 |= ADC_SCAN_UP_BIT;
else
devpriv->cmd6 &= ~ADC_SCAN_UP_BIT;
/* write to register */
devpriv->write_byte(devpriv->cmd6, dev->iobase + COMMAND6_REG);
}
labpc_ai_set_chan_and_gain(dev, mode, chan, range, aref);
labpc_setup_cmd6_reg(dev, s, mode, xfer, range, aref,
(cmd->stop_src == TRIG_EXT));
/* manual says to set scan enable bit on second pass */
if (mode == MODE_MULT_CHAN_UP || mode == MODE_MULT_CHAN_DOWN) {
devpriv->cmd1 |= ADC_SCAN_EN_BIT;