#define DRV_NAME "ni_labpc"
-#define LABPC_SIZE 32 /* size of io region used by board */
-#define LABPC_TIMER_BASE 500 /* 2 MHz master clock */
+/* size of io region used by board */
+#define LABPC_SIZE 32
+/* 2 MHz master clock */
+#define LABPC_TIMER_BASE 500
/* Registers for the lab-pc+ */
#define COMMAND1_REG 0x0
#define ADC_GAIN_MASK (0x7 << 4)
#define ADC_CHAN_BITS(x) ((x) & 0x7)
-#define ADC_SCAN_EN_BIT 0x80 /* enables multi channel scans */
+/* enables multi channel scans */
+#define ADC_SCAN_EN_BIT 0x80
#define COMMAND2_REG 0x1
-#define PRETRIG_BIT 0x1 /* enable pretriggering (used in conjunction with SWTRIG) */
-#define HWTRIG_BIT 0x2 /* enable paced conversions on external trigger */
-#define SWTRIG_BIT 0x4 /* enable paced conversions */
-#define CASCADE_BIT 0x8 /* use two cascaded counters for pacing */
+/* enable pretriggering (used in conjunction with SWTRIG) */
+#define PRETRIG_BIT 0x1
+/* enable paced conversions on external trigger */
+#define HWTRIG_BIT 0x2
+/* enable paced conversions */
+#define SWTRIG_BIT 0x4
+/* use two cascaded counters for pacing */
+#define CASCADE_BIT 0x8
#define DAC_PACED_BIT(channel) (0x40 << ((channel) & 0x1))
#define COMMAND3_REG 0x2
-#define DMA_EN_BIT 0x1 /* enable dma transfers */
-#define DIO_INTR_EN_BIT 0x2 /* enable interrupts for 8255 */
-#define DMATC_INTR_EN_BIT 0x4 /* enable dma terminal count interrupt */
-#define TIMER_INTR_EN_BIT 0x8 /* enable timer interrupt */
-#define ERR_INTR_EN_BIT 0x10 /* enable error interrupt */
-#define ADC_FNE_INTR_EN_BIT 0x20 /* enable fifo not empty interrupt */
+/* enable dma transfers */
+#define DMA_EN_BIT 0x1
+/* enable interrupts for 8255 */
+#define DIO_INTR_EN_BIT 0x2
+/* enable dma terminal count interrupt */
+#define DMATC_INTR_EN_BIT 0x4
+/* enable timer interrupt */
+#define TIMER_INTR_EN_BIT 0x8
+/* enable error interrupt */
+#define ERR_INTR_EN_BIT 0x10
+/* enable fifo not empty interrupt */
+#define ADC_FNE_INTR_EN_BIT 0x20
#define ADC_CONVERT_REG 0x3
#define DAC_LSB_REG(channel) (0x4 + 2 * ((channel) & 0x1))
#define DAC_MSB_REG(channel) (0x5 + 2 * ((channel) & 0x1))
#define ADC_CLEAR_REG 0x8
#define DMATC_CLEAR_REG 0xa
#define TIMER_CLEAR_REG 0xc
-#define COMMAND6_REG 0xe /* 1200 boards only */
-#define ADC_COMMON_BIT 0x1 /* select ground or common-mode reference */
-#define ADC_UNIP_BIT 0x2 /* adc unipolar */
-#define DAC_UNIP_BIT(channel) (0x4 << ((channel) & 0x1)) /* dac unipolar */
-#define ADC_FHF_INTR_EN_BIT 0x20 /* enable fifo half full interrupt */
-#define A1_INTR_EN_BIT 0x40 /* enable interrupt on end of hardware count */
-#define ADC_SCAN_UP_BIT 0x80 /* scan up from channel zero instead of down to zero */
+/* 1200 boards only */
+#define COMMAND6_REG 0xe
+/* select ground or common-mode reference */
+#define ADC_COMMON_BIT 0x1
+/* adc unipolar */
+#define ADC_UNIP_BIT 0x2
+/* dac unipolar */
+#define DAC_UNIP_BIT(channel) (0x4 << ((channel) & 0x1))
+/* enable fifo half full interrupt */
+#define ADC_FHF_INTR_EN_BIT 0x20
+/* enable interrupt on end of hardware count */
+#define A1_INTR_EN_BIT 0x40
+/* scan up from channel zero instead of down to zero */
+#define ADC_SCAN_UP_BIT 0x80
#define COMMAND4_REG 0xf
-#define INTERVAL_SCAN_EN_BIT 0x1 /* enables 'interval' scanning */
-#define EXT_SCAN_EN_BIT 0x2 /* enables external signal on counter b1 output to trigger scan */
-#define EXT_CONVERT_OUT_BIT 0x4 /* chooses direction (output or input) for EXTCONV* line */
-#define ADC_DIFF_BIT 0x8 /* chooses differential inputs for adc (in conjunction with board jumper) */
+/* enables 'interval' scanning */
+#define INTERVAL_SCAN_EN_BIT 0x1
+/* enables external signal on counter b1 output to trigger scan */
+#define EXT_SCAN_EN_BIT 0x2
+/* chooses direction (output or input) for EXTCONV* line */
+#define EXT_CONVERT_OUT_BIT 0x4
+/* chooses differential inputs for adc (in conjunction with board jumper) */
+#define ADC_DIFF_BIT 0x8
#define EXT_CONVERT_DISABLE_BIT 0x10
-#define COMMAND5_REG 0x1c /* 1200 boards only, calibration stuff */
-#define EEPROM_WRITE_UNPROTECT_BIT 0x4 /* enable eeprom for write */
-#define DITHER_EN_BIT 0x8 /* enable dithering */
-#define CALDAC_LOAD_BIT 0x10 /* load calibration dac */
-#define SCLOCK_BIT 0x20 /* serial clock - rising edge writes, falling edge reads */
-#define SDATA_BIT 0x40 /* serial data bit for writing to eeprom or calibration dacs */
-#define EEPROM_EN_BIT 0x80 /* enable eeprom for read/write */
+/* 1200 boards only, calibration stuff */
+#define COMMAND5_REG 0x1c
+/* enable eeprom for write */
+#define EEPROM_WRITE_UNPROTECT_BIT 0x4
+/* enable dithering */
+#define DITHER_EN_BIT 0x8
+/* load calibration dac */
+#define CALDAC_LOAD_BIT 0x10
+/* serial clock - rising edge writes, falling edge reads */
+#define SCLOCK_BIT 0x20
+/* serial data bit for writing to eeprom or calibration dacs */
+#define SDATA_BIT 0x40
+/* enable eeprom for read/write */
+#define EEPROM_EN_BIT 0x80
#define INTERVAL_COUNT_REG 0x1e
#define INTERVAL_LOAD_REG 0x1f
#define INTERVAL_LOAD_BITS 0x1
/* read-only registers */
#define STATUS1_REG 0x0
-#define DATA_AVAIL_BIT 0x1 /* data is available in fifo */
-#define OVERRUN_BIT 0x2 /* overrun has occurred */
-#define OVERFLOW_BIT 0x4 /* fifo overflow */
-#define TIMER_BIT 0x8 /* timer interrupt has occured */
-#define DMATC_BIT 0x10 /* dma terminal count has occured */
-#define EXT_TRIG_BIT 0x40 /* external trigger has occured */
-#define STATUS2_REG 0x1d /* 1200 boards only */
-#define EEPROM_OUT_BIT 0x1 /* programmable eeprom serial output */
-#define A1_TC_BIT 0x2 /* counter A1 terminal count */
-#define FNHF_BIT 0x4 /* fifo not half full */
+/* data is available in fifo */
+#define DATA_AVAIL_BIT 0x1
+/* overrun has occurred */
+#define OVERRUN_BIT 0x2
+/* fifo overflow */
+#define OVERFLOW_BIT 0x4
+/* timer interrupt has occured */
+#define TIMER_BIT 0x8
+/* dma terminal count has occured */
+#define DMATC_BIT 0x10
+/* external trigger has occured */
+#define EXT_TRIG_BIT 0x40
+/* 1200 boards only */
+#define STATUS2_REG 0x1d
+/* programmable eeprom serial output */
+#define EEPROM_OUT_BIT 0x1
+/* counter A1 terminal count */
+#define A1_TC_BIT 0x2
+/* fifo not half full */
+#define FNHF_BIT 0x4
#define ADC_FIFO_REG 0xa
#define DIO_BASE_REG 0x10
#define COUNTER_A_BASE_REG 0x14
#define COUNTER_A_CONTROL_REG (COUNTER_A_BASE_REG + 0x3)
-#define INIT_A0_BITS 0x14 /* check modes put conversion pacer output in harmless state (a0 mode 2) */
-#define INIT_A1_BITS 0x70 /* put hardware conversion counter output in harmless state (a1 mode 0) */
+/* check modes put conversion pacer output in harmless state (a0 mode 2) */
+#define INIT_A0_BITS 0x14
+/* put hardware conversion counter output in harmless state (a1 mode 0) */
+#define INIT_A1_BITS 0x70
#define COUNTER_B_BASE_REG 0x18
static int labpc_attach(struct comedi_device *dev, struct comedi_devconfig *it);
.ai_scan_up = 1,
.memory_mapped_io = 1,
},
- /* dummy entry so pci board works when comedi_config is passed driver name */
+/* dummy entry so pci board works when comedi_config is passed driver name */
{
.name = DRV_NAME,
.bustype = pci_bustype,
*/
#define thisboard ((struct labpc_board_struct *)dev->board_ptr)
-static const int dma_buffer_size = 0xff00; /* size in bytes of dma buffer */
-static const int sample_size = 2; /* 2 bytes per sample */
+/* size in bytes of dma buffer */
+static const int dma_buffer_size = 0xff00;
+/* 2 bytes per sample */
+static const int sample_size = 2;
#define devpriv ((struct labpc_private *)dev->private)
devpriv->read_byte = labpc_inb;
devpriv->write_byte = labpc_outb;
}
- /* initialize board's command registers */
+ /* initialize board's command registers */
devpriv->write_byte(devpriv->command1_bits, dev->iobase + COMMAND1_REG);
devpriv->write_byte(devpriv->command2_bits, dev->iobase + COMMAND2_REG);
devpriv->write_byte(devpriv->command3_bits, dev->iobase + COMMAND3_REG);
}
dev->irq = irq;
- /* grab dma channel */
+ /* grab dma channel */
if (dma_chan > 3) {
printk(" invalid dma channel %u\n", dma_chan);
return -EINVAL;
} else if (dma_chan) {
- /* allocate dma buffer */
+ /* allocate dma buffer */
devpriv->dma_buffer =
kmalloc(dma_buffer_size, GFP_KERNEL | GFP_DMA);
if (devpriv->dma_buffer == NULL) {
SDF_READABLE | SDF_GROUND | SDF_COMMON | SDF_DIFF | SDF_CMD_READ;
s->n_chan = 8;
s->len_chanlist = 8;
- s->maxdata = (1 << 12) - 1; /* 12 bit resolution */
+ s->maxdata = (1 << 12) - 1; /* 12 bit resolution */
s->range_table = thisboard->ai_range_table;
s->do_cmd = labpc_ai_cmd;
s->do_cmdtest = labpc_ai_cmdtest;
if (alloc_private(dev, sizeof(struct labpc_private)) < 0)
return -ENOMEM;
- /* get base address, irq etc. based on bustype */
+ /* get base address, irq etc. based on bustype */
switch (thisboard->bustype) {
case isa_bustype:
iobase = it->options[0];
for (mite = mite_devices; mite; mite = mite->next) {
if (mite->used)
continue;
- /* if bus/slot are specified then make sure we have the right bus/slot */
+/* if bus/slot are specified then make sure we have the right bus/slot */
if (bus || slot) {
if (bus != mite->pcidev->bus->number
|| slot != PCI_SLOT(mite->pcidev->devfn))
continue;
if (mite_device_id(mite) == labpc_boards[i].device_id) {
devpriv->mite = mite;
- /* fixup board pointer, in case we were using the dummy "ni_labpc" entry */
+/* fixup board pointer, in case we were using the dummy "ni_labpc" entry */
dev->board_ptr = &labpc_boards[i];
return 0;
}
cmd->stop_src != TRIG_EXT && cmd->stop_src != TRIG_NONE)
err++;
- /* can't have external stop and start triggers at once */
+ /* can't have external stop and start triggers at once */
if (cmd->start_src == TRIG_EXT && cmd->stop_src == TRIG_EXT)
err++;
err++;
}
}
- /* make sure scan timing is not too fast */
+ /* make sure scan timing is not too fast */
if (cmd->scan_begin_src == TRIG_TIMER) {
if (cmd->convert_src == TRIG_TIMER &&
cmd->scan_begin_arg <
err++;
}
}
- /* stop source */
+ /* stop source */
switch (cmd->stop_src) {
case TRIG_COUNT:
if (!cmd->stop_arg) {
range = CR_RANGE(cmd->chanlist[0]);
aref = CR_AREF(cmd->chanlist[0]);
- /* make sure board is disabled before setting up aquisition */
+ /* make sure board is disabled before setting up aquisition */
spin_lock_irqsave(&dev->spinlock, flags);
devpriv->command2_bits &= ~SWTRIG_BIT & ~HWTRIG_BIT & ~PRETRIG_BIT;
devpriv->write_byte(devpriv->command2_bits, dev->iobase + COMMAND2_REG);
channel = CR_CHAN(cmd->chanlist[cmd->chanlist_len - 1]);
else
channel = CR_CHAN(cmd->chanlist[0]);
- /* munge channel bits for differential / scan disabled mode */
+ /* munge channel bits for differential / scan disabled mode */
if (labpc_ai_scan_mode(cmd) != MODE_SINGLE_CHAN && aref == AREF_DIFF)
channel *= 2;
devpriv->command1_bits |= ADC_CHAN_BITS(channel);
devpriv->command1_bits |= thisboard->ai_range_code[range];
devpriv->write_byte(devpriv->command1_bits, dev->iobase + COMMAND1_REG);
- /* manual says to set scan enable bit on second pass */
+ /* manual says to set scan enable bit on second pass */
if (labpc_ai_scan_mode(cmd) == MODE_MULT_CHAN_UP ||
labpc_ai_scan_mode(cmd) == MODE_MULT_CHAN_DOWN) {
devpriv->command1_bits |= ADC_SCAN_EN_BIT;
- /* need a brief delay before enabling scan, or scan list will get screwed when you switch
+ /* need a brief delay before enabling scan, or scan
+ * list will get screwed when you switch
* between scan up to scan down mode - dunno why */
udelay(1);
devpriv->write_byte(devpriv->command1_bits,
cmd = &async->cmd;
async->events = 0;
- /* read board status */
+ /* read board status */
devpriv->status1_bits = devpriv->read_byte(dev->iobase + STATUS1_REG);
if (thisboard->register_layout == labpc_1200_layout)
devpriv->status2_bits =
}
if (devpriv->status1_bits & OVERRUN_BIT) {
- /* clear error interrupt */
+ /* clear error interrupt */
devpriv->write_byte(0x1, dev->iobase + ADC_CLEAR_REG);
async->events |= COMEDI_CB_ERROR | COMEDI_CB_EOA;
comedi_event(dev, s);
}
if (devpriv->current_transfer == isa_dma_transfer) {
- /* if a dma terminal count of external stop trigger has occurred */
+ /* if a dma terminal count of external stop trigger has occurred */
if (devpriv->status1_bits & DMATC_BIT ||
(thisboard->register_layout == labpc_1200_layout
&& devpriv->status2_bits & A1_TC_BIT)) {
chan = CR_CHAN(insn->chanspec);
range = CR_RANGE(insn->chanspec);
devpriv->command1_bits |= thisboard->ai_range_code[range];
- /* munge channel bits for differential/scan disabled mode */
+ /* munge channel bits for differential/scan disabled mode */
if (CR_AREF(insn->chanspec) == AREF_DIFF)
chan *= 2;
devpriv->command1_bits |= ADC_CHAN_BITS(chan);
devpriv->write_byte(devpriv->command1_bits, dev->iobase + COMMAND1_REG);
- /* setup command6 register for 1200 boards */
+ /* setup command6 register for 1200 boards */
if (thisboard->register_layout == labpc_1200_layout) {
/* reference inputs to ground or common? */
if (CR_AREF(insn->chanspec) != AREF_GROUND)
devpriv->command6_bits |= ADC_COMMON_BIT;
else
devpriv->command6_bits &= ~ADC_COMMON_BIT;
- /* bipolar or unipolar range? */
+ /* bipolar or unipolar range? */
if (thisboard->ai_range_is_unipolar[range])
devpriv->command6_bits |= ADC_UNIP_BIT;
else
devpriv->command6_bits &= ~ADC_UNIP_BIT;
- /* don't interrupt on fifo half full */
+ /* don't interrupt on fifo half full */
devpriv->command6_bits &= ~ADC_FHF_INTR_EN_BIT;
- /* don't enable interrupt on counter a1 terminal count? */
+ /* don't enable interrupt on counter a1 terminal count? */
devpriv->command6_bits &= ~A1_INTR_EN_BIT;
- /* write to register */
+ /* write to register */
devpriv->write_byte(devpriv->command6_bits,
dev->iobase + COMMAND6_REG);
}
- /* setup command4 register */
+ /* setup command4 register */
devpriv->command4_bits = 0;
devpriv->command4_bits |= EXT_CONVERT_DISABLE_BIT;
- /* single-ended/differential */
+ /* single-ended/differential */
if (CR_AREF(insn->chanspec) == AREF_DIFF)
devpriv->command4_bits |= ADC_DIFF_BIT;
devpriv->write_byte(devpriv->command4_bits, dev->iobase + COMMAND4_REG);
- /* initialize pacer counter output to make sure it doesn't cause any problems */
+ /* initialize pacer counter output to make sure it doesn't cause any problems */
devpriv->write_byte(INIT_A0_BITS, dev->iobase + COUNTER_A_CONTROL_REG);
labpc_clear_adc_fifo(dev);
channel = CR_CHAN(insn->chanspec);
- /* turn off pacing of analog output channel */
+ /* turn off pacing of analog output channel */
/* note: hardware bug in daqcard-1200 means pacing cannot
* be independently enabled/disabled for its the two channels */
spin_lock_irqsave(&dev->spinlock, flags);
devpriv->write_byte(devpriv->command2_bits, dev->iobase + COMMAND2_REG);
spin_unlock_irqrestore(&dev->spinlock, flags);
- /* set range */
+ /* set range */
if (thisboard->register_layout == labpc_1200_layout) {
range = CR_RANGE(insn->chanspec);
if (range & AO_RANGE_IS_UNIPOLAR)
devpriv->write_byte(devpriv->command6_bits,
dev->iobase + COMMAND6_REG);
}
- /* send data */
+ /* send data */
lsb = data[0] & 0xff;
msb = (data[0] >> 8) & 0xff;
devpriv->write_byte(lsb, dev->iobase + DAC_LSB_REG(channel));
devpriv->write_byte(msb, dev->iobase + DAC_MSB_REG(channel));
- /* remember value for readback */
+ /* remember value for readback */
devpriv->ao_value[channel] = data[0];
return 1;
if (cmd.convert_src == TRIG_TIMER)
freq = 1000000000 / cmd.convert_arg;
- /* return some default value */
+ /* return some default value */
else
freq = 0xffffffff;
- /* make buffer fill in no more than 1/3 second */
+ /* make buffer fill in no more than 1/3 second */
size = (freq / 3) * sample_size;
- /* set a minimum and maximum size allowed */
+ /* set a minimum and maximum size allowed */
if (size > dma_buffer_size)
size = dma_buffer_size - dma_buffer_size % sample_size;
else if (size < sample_size)
/* figures out what counter values to use based on command */
static void labpc_adc_timing(struct comedi_device *dev, struct comedi_cmd *cmd)
{
- const int max_counter_value = 0x10000; /* max value for 16 bit counter in mode 2 */
- const int min_counter_value = 2; /* min value for 16 bit counter in mode 2 */
+ /* max value for 16 bit counter in mode 2 */
+ const int max_counter_value = 0x10000;
+ /* min value for 16 bit counter in mode 2 */
+ const int min_counter_value = 2;
unsigned int base_period;
- /* if both convert and scan triggers are TRIG_TIMER, then they both rely on counter b0 */
+ /*
+ * if both convert and scan triggers are TRIG_TIMER, then they
+ * both rely on counter b0
+ */
if (labpc_ai_convert_period(cmd) && labpc_ai_scan_period(cmd)) {
- /* pick the lowest b0 divisor value we can (for maximum input clock speed on convert and scan counters) */
+ /*
+ * pick the lowest b0 divisor value we can (for maximum input
+ * clock speed on convert and scan counters)
+ */
devpriv->divisor_b0 = (labpc_ai_scan_period(cmd) - 1) /
(LABPC_TIMER_BASE * max_counter_value) + 1;
if (devpriv->divisor_b0 < min_counter_value)
base_period * devpriv->divisor_a0);
labpc_set_ai_scan_period(cmd,
base_period * devpriv->divisor_b1);
- /* if only one TRIG_TIMER is used, we can employ the generic cascaded timing functions */
+ /*
+ * if only one TRIG_TIMER is used, we can employ the generic
+ * cascaded timing functions
+ */
} else if (labpc_ai_scan_period(cmd)) {
unsigned int scan_period;
unsigned int address)
{
unsigned int value;
- const int read_instruction = 0x3; /* bits to tell eeprom to expect a read */
- const int write_length = 8; /* 8 bit write lengths to eeprom */
+ /* bits to tell eeprom to expect a read */
+ const int read_instruction = 0x3;
+ /* 8 bit write lengths to eeprom */
+ const int write_length = 8;
/* enable read/write to eeprom */
devpriv->command5_bits &= ~EEPROM_EN_BIT;
git.samba.org / sfrench / cifs-2.6.git / commitdiff