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Commit cf530aa4 authored by Bill Pemberton's avatar Bill Pemberton Committed by Greg Kroah-Hartman
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Staging: comedi: remove C99 comments in cb_pcidas.c 

Signed-off-by: default avatarBill Pemberton <wfp5p@virginia.edu>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 9ef4dea6
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Showing with 175 additions and 175 deletions
drivers/staging/comedi/drivers/cb_pcidas.c
View file @ cf530aa4
......@@ -70,14 +70,14 @@ analog triggering on 1602 series
#include "comedi_pci.h"
#include "comedi_fc.h"
#undef CB_PCIDAS_DEBUG // disable debugging code
//#define CB_PCIDAS_DEBUG // enable debugging code
#undef CB_PCIDAS_DEBUG /* disable debugging code */
/* #define CB_PCIDAS_DEBUG enable debugging code */
// PCI vendor number of ComputerBoards/MeasurementComputing
/* PCI vendor number of ComputerBoards/MeasurementComputing */
#define PCI_VENDOR_ID_CB 0x1307
#define TIMER_BASE 100 // 10MHz master clock
#define AI_BUFFER_SIZE 1024 // maximum fifo size of any supported board
#define AO_BUFFER_SIZE 1024 // maximum fifo size of any supported board
#define TIMER_BASE 100 /* 10MHz master clock */
#define AI_BUFFER_SIZE 1024 /* maximum fifo size of any supported board */
#define AO_BUFFER_SIZE 1024 /* maximum fifo size of any supported board */
#define NUM_CHANNELS_8800 8
#define NUM_CHANNELS_7376 1
#define NUM_CHANNELS_8402 2
......@@ -85,71 +85,71 @@ analog triggering on 1602 series
/* PCI-DAS base addresses */
// indices of base address regions
/* indices of base address regions */
#define S5933_BADRINDEX 0
#define CONT_STAT_BADRINDEX 1
#define ADC_FIFO_BADRINDEX 2
#define PACER_BADRINDEX 3
#define AO_BADRINDEX 4
// sizes of io regions
/* sizes of io regions */
#define CONT_STAT_SIZE 10
#define ADC_FIFO_SIZE 4
#define PACER_SIZE 12
#define AO_SIZE 4
/* Control/Status registers */
#define INT_ADCFIFO 0 // INTERRUPT / ADC FIFO register
#define INT_EOS 0x1 // interrupt end of scan
#define INT_FHF 0x2 // interrupt fifo half full
#define INT_FNE 0x3 // interrupt fifo not empty
#define INT_MASK 0x3 // mask of interrupt select bits
#define INTE 0x4 // interrupt enable
#define DAHFIE 0x8 // dac half full interrupt enable
#define EOAIE 0x10 // end of aquisition interrupt enable
#define DAHFI 0x20 // dac half full read status / write interrupt clear
#define EOAI 0x40 // read end of acq. interrupt status / write clear
#define INT 0x80 // read interrupt status / write clear
#define EOBI 0x200 // read end of burst interrupt status
#define ADHFI 0x400 // read half-full interrupt status
#define ADNEI 0x800 // read fifo not empty interrupt latch status
#define ADNE 0x1000 // read, fifo not empty (realtime, not latched) status
#define DAEMIE 0x1000 // write, dac empty interrupt enable
#define LADFUL 0x2000 // read fifo overflow / write clear
#define DAEMI 0x4000 // dac fifo empty interrupt status / write clear
#define ADCMUX_CONT 2 // ADC CHANNEL MUX AND CONTROL register
#define INT_ADCFIFO 0 /* INTERRUPT / ADC FIFO register */
#define INT_EOS 0x1 /* interrupt end of scan */
#define INT_FHF 0x2 /* interrupt fifo half full */
#define INT_FNE 0x3 /* interrupt fifo not empty */
#define INT_MASK 0x3 /* mask of interrupt select bits */
#define INTE 0x4 /* interrupt enable */
#define DAHFIE 0x8 /* dac half full interrupt enable */
#define EOAIE 0x10 /* end of aquisition interrupt enable */
#define DAHFI 0x20 /* dac half full read status / write interrupt clear */
#define EOAI 0x40 /* read end of acq. interrupt status / write clear */
#define INT 0x80 /* read interrupt status / write clear */
#define EOBI 0x200 /* read end of burst interrupt status */
#define ADHFI 0x400 /* read half-full interrupt status */
#define ADNEI 0x800 /* read fifo not empty interrupt latch status */
#define ADNE 0x1000 /* read, fifo not empty (realtime, not latched) status */
#define DAEMIE 0x1000 /* write, dac empty interrupt enable */
#define LADFUL 0x2000 /* read fifo overflow / write clear */
#define DAEMI 0x4000 /* dac fifo empty interrupt status / write clear */
#define ADCMUX_CONT 2 /* ADC CHANNEL MUX AND CONTROL register */
#define BEGIN_SCAN(x) ((x) & 0xf)
#define END_SCAN(x) (((x) & 0xf) << 4)
#define GAIN_BITS(x) (((x) & 0x3) << 8)
#define UNIP 0x800 // Analog front-end unipolar for range
#define SE 0x400 // Inputs in single-ended mode
#define PACER_MASK 0x3000 // pacer source bits
#define PACER_INT 0x1000 // internal pacer
#define PACER_EXT_FALL 0x2000 // external falling edge
#define PACER_EXT_RISE 0x3000 // external rising edge
#define EOC 0x4000 // adc not busy
#define TRIG_CONTSTAT 4 // TRIGGER CONTROL/STATUS register
#define SW_TRIGGER 0x1 // software start trigger
#define EXT_TRIGGER 0x2 // external start trigger
#define ANALOG_TRIGGER 0x3 // external analog trigger
#define TRIGGER_MASK 0x3 // mask of bits that determine start trigger
#define TGEN 0x10 // enable external start trigger
#define BURSTE 0x20 // burst mode enable
#define XTRCL 0x80 // clear external trigger
#define CALIBRATION_REG 6 // CALIBRATION register
#define SELECT_8800_BIT 0x100 // select 8800 caldac
#define SELECT_TRIMPOT_BIT 0x200 // select ad7376 trim pot
#define SELECT_DAC08_BIT 0x400 // select dac08 caldac
#define UNIP 0x800 /* Analog front-end unipolar for range */
#define SE 0x400 /* Inputs in single-ended mode */
#define PACER_MASK 0x3000 /* pacer source bits */
#define PACER_INT 0x1000 /* internal pacer */
#define PACER_EXT_FALL 0x2000 /* external falling edge */
#define PACER_EXT_RISE 0x3000 /* external rising edge */
#define EOC 0x4000 /* adc not busy */
#define TRIG_CONTSTAT 4 /* TRIGGER CONTROL/STATUS register */
#define SW_TRIGGER 0x1 /* software start trigger */
#define EXT_TRIGGER 0x2 /* external start trigger */
#define ANALOG_TRIGGER 0x3 /* external analog trigger */
#define TRIGGER_MASK 0x3 /* mask of bits that determine start trigger */
#define TGEN 0x10 /* enable external start trigger */
#define BURSTE 0x20 /* burst mode enable */
#define XTRCL 0x80 /* clear external trigger */
#define CALIBRATION_REG 6 /* CALIBRATION register */
#define SELECT_8800_BIT 0x100 /* select 8800 caldac */
#define SELECT_TRIMPOT_BIT 0x200 /* select ad7376 trim pot */
#define SELECT_DAC08_BIT 0x400 /* select dac08 caldac */
#define CAL_SRC_BITS(x) (((x) & 0x7) << 11)
#define CAL_EN_BIT 0x4000 // read calibration source instead of analog input channel 0
#define SERIAL_DATA_IN_BIT 0x8000 // serial data stream going to 8800 and 7376
#define CAL_EN_BIT 0x4000 /* read calibration source instead of analog input channel 0 */
#define SERIAL_DATA_IN_BIT 0x8000 /* serial data stream going to 8800 and 7376 */
#define DAC_CSR 0x8 // dac control and status register
#define DAC_CSR 0x8 /* dac control and status register */
enum dac_csr_bits {
DACEN = 0x2, // dac enable
DAC_MODE_UPDATE_BOTH = 0x80, // update both dacs when dac0 is written
DACEN = 0x2, /* dac enable */
DAC_MODE_UPDATE_BOTH = 0x80, /* update both dacs when dac0 is written */
};
static inline unsigned int DAC_RANGE(unsigned int channel, unsigned int range)
{
......@@ -160,42 +160,42 @@ static inline unsigned int DAC_RANGE_MASK(unsigned int channel)
return 0x3 << (8 + 2 * (channel & 0x1));
};
// bits for 1602 series only
/* bits for 1602 series only */
enum dac_csr_bits_1602 {
DAC_EMPTY = 0x1, // dac fifo empty, read, write clear
DAC_START = 0x4, // start/arm dac fifo operations
DAC_PACER_MASK = 0x18, // bits that set dac pacer source
DAC_PACER_INT = 0x8, // dac internal pacing
DAC_PACER_EXT_FALL = 0x10, // dac external pacing, falling edge
DAC_PACER_EXT_RISE = 0x18, // dac external pacing, rising edge
DAC_EMPTY = 0x1, /* dac fifo empty, read, write clear */
DAC_START = 0x4, /* start/arm dac fifo operations */
DAC_PACER_MASK = 0x18, /* bits that set dac pacer source */
DAC_PACER_INT = 0x8, /* dac internal pacing */
DAC_PACER_EXT_FALL = 0x10, /* dac external pacing, falling edge */
DAC_PACER_EXT_RISE = 0x18, /* dac external pacing, rising edge */
};
static inline unsigned int DAC_CHAN_EN(unsigned int channel)
{
return 1 << (5 + (channel & 0x1)); // enable channel 0 or 1
return 1 << (5 + (channel & 0x1)); /* enable channel 0 or 1 */
};
/* analog input fifo */
#define ADCDATA 0 // ADC DATA register
#define ADCFIFOCLR 2 // ADC FIFO CLEAR
#define ADCDATA 0 /* ADC DATA register */
#define ADCFIFOCLR 2 /* ADC FIFO CLEAR */
// pacer, counter, dio registers
/* pacer, counter, dio registers */
#define ADC8254 0
#define DIO_8255 4
#define DAC8254 8
// analog output registers for 100x, 1200 series
/* analog output registers for 100x, 1200 series */
static inline unsigned int DAC_DATA_REG(unsigned int channel)
{
return 2 * (channel & 0x1);
}
/* analog output registers for 1602 series*/
#define DACDATA 0 // DAC DATA register
#define DACFIFOCLR 2 // DAC FIFO CLEAR
#define DACDATA 0 /* DAC DATA register */
#define DACFIFOCLR 2 /* DAC FIFO CLEAR */
// bit in hexadecimal representation of range index that indicates unipolar input range
/* bit in hexadecimal representation of range index that indicates unipolar input range */
#define IS_UNIPOLAR 0x4
// analog input ranges for most boards
/* analog input ranges for most boards */
static const struct comedi_lrange cb_pcidas_ranges = {
8,
{
......@@ -210,7 +210,7 @@ static const struct comedi_lrange cb_pcidas_ranges = {
}
};
// pci-das1001 input ranges
/* pci-das1001 input ranges */
static const struct comedi_lrange cb_pcidas_alt_ranges = {
8,
{
......@@ -225,7 +225,7 @@ static const struct comedi_lrange cb_pcidas_alt_ranges = {
}
};
// analog output ranges
/* analog output ranges */
static const struct comedi_lrange cb_pcidas_ao_ranges = {
4,
{
......@@ -244,14 +244,14 @@ enum trimpot_model {
struct cb_pcidas_board {
const char *name;
unsigned short device_id;
int ai_se_chans; // Inputs in single-ended mode
int ai_diff_chans; // Inputs in differential mode
int ai_bits; // analog input resolution
int ai_speed; // fastest conversion period in ns
int ao_nchan; // number of analog out channels
int has_ao_fifo; // analog output has fifo
int ao_scan_speed; // analog output speed for 1602 series (for a scan, not conversion)
int fifo_size; // number of samples fifo can hold
int ai_se_chans; /* Inputs in single-ended mode */
int ai_diff_chans; /* Inputs in differential mode */
int ai_bits; /* analog input resolution */
int ai_speed; /* fastest conversion period in ns */
int ao_nchan; /* number of analog out channels */
int has_ao_fifo; /* analog output has fifo */
int ao_scan_speed; /* analog output speed for 1602 series (for a scan, not conversion) */
int fifo_size; /* number of samples fifo can hold */
const struct comedi_lrange *ranges;
enum trimpot_model trimpot;
unsigned has_dac08:1;
......@@ -374,7 +374,7 @@ static const struct cb_pcidas_board cb_pcidas_boards[] = {
},
};
// Number of boards in cb_pcidas_boards
/* Number of boards in cb_pcidas_boards */
#define N_BOARDS (sizeof(cb_pcidas_boards) / sizeof(struct cb_pcidas_board))
static DEFINE_PCI_DEVICE_TABLE(cb_pcidas_pci_table) = {
......@@ -402,28 +402,28 @@ MODULE_DEVICE_TABLE(pci, cb_pcidas_pci_table);
struct cb_pcidas_private {
/* would be useful for a PCI device */
struct pci_dev *pci_dev;
// base addresses
/* base addresses */
unsigned long s5933_config;
unsigned long control_status;
unsigned long adc_fifo;
unsigned long pacer_counter_dio;
unsigned long ao_registers;
// divisors of master clock for analog input pacing
/* divisors of master clock for analog input pacing */
unsigned int divisor1;
unsigned int divisor2;
volatile unsigned int count; // number of analog input samples remaining
volatile unsigned int adc_fifo_bits; // bits to write to interupt/adcfifo register
volatile unsigned int s5933_intcsr_bits; // bits to write to amcc s5933 interrupt control/status register
volatile unsigned int ao_control_bits; // bits to write to ao control and status register
volatile unsigned int count; /* number of analog input samples remaining */
volatile unsigned int adc_fifo_bits; /* bits to write to interupt/adcfifo register */
volatile unsigned int s5933_intcsr_bits; /* bits to write to amcc s5933 interrupt control/status register */
volatile unsigned int ao_control_bits; /* bits to write to ao control and status register */
short ai_buffer[AI_BUFFER_SIZE];
short ao_buffer[AO_BUFFER_SIZE];
// divisors of master clock for analog output pacing
/* divisors of master clock for analog output pacing */
unsigned int ao_divisor1;
unsigned int ao_divisor2;
volatile unsigned int ao_count; // number of analog output samples remaining
int ao_value[2]; // remember what the analog outputs are set to, to allow readback
unsigned int caldac_value[NUM_CHANNELS_8800]; // for readback of caldac
unsigned int trimpot_value[NUM_CHANNELS_8402]; // for readback of trimpot
volatile unsigned int ao_count; /* number of analog output samples remaining */
int ao_value[2]; /* remember what the analog outputs are set to, to allow readback */
unsigned int caldac_value[NUM_CHANNELS_8800]; /* for readback of caldac */
unsigned int trimpot_value[NUM_CHANNELS_8402]; /* for readback of trimpot */
unsigned int dac08_value;
unsigned int calibration_source;
};
......@@ -531,16 +531,16 @@ static int cb_pcidas_attach(struct comedi_device * dev, struct comedi_devconfig
for (pcidev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, NULL);
pcidev != NULL;
pcidev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, pcidev)) {
// is it not a computer boards card?
/* is it not a computer boards card? */
if (pcidev->vendor != PCI_VENDOR_ID_CB)
continue;
// loop through cards supported by this driver
/* loop through cards supported by this driver */
for (index = 0; index < N_BOARDS; index++) {
if (cb_pcidas_boards[index].device_id != pcidev->device)
continue;
// was a particular bus/slot requested?
/* was a particular bus/slot requested? */
if (it->options[0] || it->options[1]) {
// are we on the wrong bus/slot?
/* are we on the wrong bus/slot? */
if (pcidev->bus->number != it->options[0] ||
PCI_SLOT(pcidev->devfn) !=
it->options[1]) {
......@@ -585,11 +585,11 @@ static int cb_pcidas_attach(struct comedi_device * dev, struct comedi_devconfig
devpriv->ao_registers =
pci_resource_start(devpriv->pci_dev, AO_BADRINDEX);
}
// disable and clear interrupts on amcc s5933
/* disable and clear interrupts on amcc s5933 */
outl(INTCSR_INBOX_INTR_STATUS,
devpriv->s5933_config + AMCC_OP_REG_INTCSR);
// get irq
/* get irq */
if (comedi_request_irq(devpriv->pci_dev->irq, cb_pcidas_interrupt,
IRQF_SHARED, "cb_pcidas", dev)) {
printk(" unable to allocate irq %d\n", devpriv->pci_dev->irq);
......@@ -597,7 +597,7 @@ static int cb_pcidas_attach(struct comedi_device * dev, struct comedi_devconfig
}
dev->irq = devpriv->pci_dev->irq;
//Initialize dev->board_name
/* Initialize dev->board_name */
dev->board_name = thisboard->name;
/*
......@@ -628,7 +628,7 @@ static int cb_pcidas_attach(struct comedi_device * dev, struct comedi_devconfig
s->type = COMEDI_SUBD_AO;
s->subdev_flags = SDF_READABLE | SDF_WRITABLE | SDF_GROUND;
s->n_chan = thisboard->ao_nchan;
// analog out resolution is the same as analog input resolution, so use ai_bits
/* analog out resolution is the same as analog input resolution, so use ai_bits */
s->maxdata = (1 << thisboard->ai_bits) - 1;
s->range_table = &cb_pcidas_ao_ranges;
s->insn_read = cb_pcidas_ao_readback_insn;
......@@ -650,7 +650,7 @@ static int cb_pcidas_attach(struct comedi_device * dev, struct comedi_devconfig
s = dev->subdevices + 2;
subdev_8255_init(dev, s, NULL, devpriv->pacer_counter_dio + DIO_8255);
// serial EEPROM,
/* serial EEPROM, */
s = dev->subdevices + 3;
s->type = COMEDI_SUBD_MEMORY;
s->subdev_flags = SDF_READABLE | SDF_INTERNAL;
......@@ -658,7 +658,7 @@ static int cb_pcidas_attach(struct comedi_device * dev, struct comedi_devconfig
s->maxdata = 0xff;
s->insn_read = eeprom_read_insn;
// 8800 caldac
/* 8800 caldac */
s = dev->subdevices + 4;
s->type = COMEDI_SUBD_CALIB;
s->subdev_flags = SDF_READABLE | SDF_WRITABLE | SDF_INTERNAL;
......@@ -669,7 +669,7 @@ static int cb_pcidas_attach(struct comedi_device * dev, struct comedi_devconfig
for (i = 0; i < s->n_chan; i++)
caldac_8800_write(dev, i, s->maxdata / 2);
// trim potentiometer
/* trim potentiometer */
s = dev->subdevices + 5;
s->type = COMEDI_SUBD_CALIB;
s->subdev_flags = SDF_READABLE | SDF_WRITABLE | SDF_INTERNAL;
......@@ -685,7 +685,7 @@ static int cb_pcidas_attach(struct comedi_device * dev, struct comedi_devconfig
for (i = 0; i < s->n_chan; i++)
cb_pcidas_trimpot_write(dev, i, s->maxdata / 2);
// dac08 caldac
/* dac08 caldac */
s = dev->subdevices + 6;
if (thisboard->has_dac08) {
s->type = COMEDI_SUBD_CALIB;
......@@ -698,13 +698,13 @@ static int cb_pcidas_attach(struct comedi_device * dev, struct comedi_devconfig
} else
s->type = COMEDI_SUBD_UNUSED;
// make sure mailbox 4 is empty
/* make sure mailbox 4 is empty */
inl(devpriv->s5933_config + AMCC_OP_REG_IMB4);
/* Set bits to enable incoming mailbox interrupts on amcc s5933. */
devpriv->s5933_intcsr_bits =
INTCSR_INBOX_BYTE(3) | INTCSR_INBOX_SELECT(3) |
INTCSR_INBOX_FULL_INT;
// clear and enable interrupt on amcc s5933
/* clear and enable interrupt on amcc s5933 */
outl(devpriv->s5933_intcsr_bits | INTCSR_INBOX_INTR_STATUS,
devpriv->s5933_config + AMCC_OP_REG_INTCSR);
......@@ -725,7 +725,7 @@ static int cb_pcidas_detach(struct comedi_device * dev)
if (devpriv) {
if (devpriv->s5933_config) {
// disable and clear interrupts on amcc s5933
/* disable and clear interrupts on amcc s5933 */
outl(INTCSR_INBOX_INTR_STATUS,
devpriv->s5933_config + AMCC_OP_REG_INTCSR);
#ifdef CB_PCIDAS_DEBUG
......@@ -760,7 +760,7 @@ static int cb_pcidas_ai_rinsn(struct comedi_device * dev, struct comedi_subdevic
unsigned int bits;
static const int timeout = 10000;
int channel;
// enable calibration input if appropriate
/* enable calibration input if appropriate */
if (insn->chanspec & CR_ALT_SOURCE) {
outw(cal_enable_bits(dev),
devpriv->control_status + CALIBRATION_REG);
......@@ -769,13 +769,13 @@ static int cb_pcidas_ai_rinsn(struct comedi_device * dev, struct comedi_subdevic
outw(0, devpriv->control_status + CALIBRATION_REG);
channel = CR_CHAN(insn->chanspec);
}
// set mux limits and gain
/* set mux limits and gain */
bits = BEGIN_SCAN(channel) |
END_SCAN(channel) | GAIN_BITS(CR_RANGE(insn->chanspec));
// set unipolar/bipolar
/* set unipolar/bipolar */
if (CR_RANGE(insn->chanspec) & IS_UNIPOLAR)
bits |= UNIP;
// set singleended/differential
/* set singleended/differential */
if (CR_AREF(insn->chanspec) != AREF_DIFF)
bits |= SE;
outw(bits, devpriv->control_status + ADCMUX_CONT);
......@@ -836,14 +836,14 @@ static int ai_config_insn(struct comedi_device * dev, struct comedi_subdevice *
return -EINVAL;
}
// analog output insn for pcidas-1000 and 1200 series
/* analog output insn for pcidas-1000 and 1200 series */
static int cb_pcidas_ao_nofifo_winsn(struct comedi_device * dev, struct comedi_subdevice * s,
struct comedi_insn * insn, unsigned int * data)
{
int channel;
unsigned long flags;
// set channel and range
/* set channel and range */
channel = CR_CHAN(insn->chanspec);
comedi_spin_lock_irqsave(&dev->spinlock, flags);
devpriv->ao_control_bits &=
......@@ -853,25 +853,25 @@ static int cb_pcidas_ao_nofifo_winsn(struct comedi_device * dev, struct comedi_s
outw(devpriv->ao_control_bits, devpriv->control_status + DAC_CSR);
comedi_spin_unlock_irqrestore(&dev->spinlock, flags);
// remember value for readback
/* remember value for readback */
devpriv->ao_value[channel] = data[0];
// send data
/* send data */
outw(data[0], devpriv->ao_registers + DAC_DATA_REG(channel));
return 1;
}
// analog output insn for pcidas-1602 series
/* analog output insn for pcidas-1602 series */
static int cb_pcidas_ao_fifo_winsn(struct comedi_device * dev, struct comedi_subdevice * s,
struct comedi_insn * insn, unsigned int * data)
{
int channel;
unsigned long flags;
// clear dac fifo
/* clear dac fifo */
outw(0, devpriv->ao_registers + DACFIFOCLR);
// set channel and range
/* set channel and range */
channel = CR_CHAN(insn->chanspec);
comedi_spin_lock_irqsave(&dev->spinlock, flags);
devpriv->ao_control_bits &=
......@@ -883,16 +883,16 @@ static int cb_pcidas_ao_fifo_winsn(struct comedi_device * dev, struct comedi_sub
outw(devpriv->ao_control_bits, devpriv->control_status + DAC_CSR);
comedi_spin_unlock_irqrestore(&dev->spinlock, flags);
// remember value for readback
/* remember value for readback */
devpriv->ao_value[channel] = data[0];
// send data
/* send data */
outw(data[0], devpriv->ao_registers + DACDATA);
return 1;
}
// analog output readback insn
// XXX loses track of analog output value back after an analog ouput command is executed
/* analog output readback insn */
/* XXX loses track of analog output value back after an analog ouput command is executed */
static int cb_pcidas_ao_readback_insn(struct comedi_device * dev, struct comedi_subdevice * s,
struct comedi_insn * insn, unsigned int * data)
{
......@@ -1066,7 +1066,7 @@ static int cb_pcidas_ai_cmdtest(struct comedi_device * dev, struct comedi_subdev
if (cmd->stop_src != TRIG_COUNT && cmd->stop_src != TRIG_NONE)
err++;
// make sure trigger sources are compatible with each other
/* make sure trigger sources are compatible with each other */
if (cmd->scan_begin_src == TRIG_FOLLOW && cmd->convert_src == TRIG_NOW)
err++;
if (cmd->scan_begin_src != TRIG_FOLLOW && cmd->convert_src != TRIG_NOW)
......@@ -1138,7 +1138,7 @@ static int cb_pcidas_ai_cmdtest(struct comedi_device * dev, struct comedi_subdev
if (err)
return 4;
// check channel/gain list against card's limitations
/* check channel/gain list against card's limitations */
if (cmd->chanlist) {
gain = CR_RANGE(cmd->chanlist[0]);
start_chan = CR_CHAN(cmd->chanlist[0]);
......@@ -1170,24 +1170,24 @@ static int cb_pcidas_ai_cmd(struct comedi_device * dev, struct comedi_subdevice
unsigned int bits;
unsigned long flags;
// make sure CAL_EN_BIT is disabled
/* make sure CAL_EN_BIT is disabled */
outw(0, devpriv->control_status + CALIBRATION_REG);
// initialize before settings pacer source and count values
/* initialize before settings pacer source and count values */
outw(0, devpriv->control_status + TRIG_CONTSTAT);
// clear fifo
/* clear fifo */
outw(0, devpriv->adc_fifo + ADCFIFOCLR);
// set mux limits, gain and pacer source
/* set mux limits, gain and pacer source */
bits = BEGIN_SCAN(CR_CHAN(cmd->chanlist[0])) |
END_SCAN(CR_CHAN(cmd->chanlist[cmd->chanlist_len - 1])) |
GAIN_BITS(CR_RANGE(cmd->chanlist[0]));
// set unipolar/bipolar
/* set unipolar/bipolar */
if (CR_RANGE(cmd->chanlist[0]) & IS_UNIPOLAR)
bits |= UNIP;
// set singleended/differential
/* set singleended/differential */
if (CR_AREF(cmd->chanlist[0]) != AREF_DIFF)
bits |= SE;
// set pacer source
/* set pacer source */
if (cmd->convert_src == TRIG_EXT || cmd->scan_begin_src == TRIG_EXT)
bits |= PACER_EXT_RISE;
else
......@@ -1198,7 +1198,7 @@ static int cb_pcidas_ai_cmd(struct comedi_device * dev, struct comedi_subdevice
rt_printk("comedi: sent 0x%x to adcmux control\n", bits);
#endif
// load counters
/* load counters */
if (cmd->convert_src == TRIG_TIMER)
cb_pcidas_load_counters(dev, &cmd->convert_arg,
cmd->flags & TRIG_ROUND_MASK);
......@@ -1206,31 +1206,31 @@ static int cb_pcidas_ai_cmd(struct comedi_device * dev, struct comedi_subdevice
cb_pcidas_load_counters(dev, &cmd->scan_begin_arg,
cmd->flags & TRIG_ROUND_MASK);
// set number of conversions
/* set number of conversions */
if (cmd->stop_src == TRIG_COUNT) {
devpriv->count = cmd->chanlist_len * cmd->stop_arg;
}
// enable interrupts
/* enable interrupts */
comedi_spin_lock_irqsave(&dev->spinlock, flags);
devpriv->adc_fifo_bits |= INTE;
devpriv->adc_fifo_bits &= ~INT_MASK;
if (cmd->flags & TRIG_WAKE_EOS) {
if (cmd->convert_src == TRIG_NOW && cmd->chanlist_len > 1)
devpriv->adc_fifo_bits |= INT_EOS; // interrupt end of burst
devpriv->adc_fifo_bits |= INT_EOS; /* interrupt end of burst */
else
devpriv->adc_fifo_bits |= INT_FNE; // interrupt fifo not empty
devpriv->adc_fifo_bits |= INT_FNE; /* interrupt fifo not empty */
} else {
devpriv->adc_fifo_bits |= INT_FHF; //interrupt fifo half full
devpriv->adc_fifo_bits |= INT_FHF; /* interrupt fifo half full */
}
#ifdef CB_PCIDAS_DEBUG
rt_printk("comedi: adc_fifo_bits are 0x%x\n", devpriv->adc_fifo_bits);
#endif
// enable (and clear) interrupts
/* enable (and clear) interrupts */
outw(devpriv->adc_fifo_bits | EOAI | INT | LADFUL,
devpriv->control_status + INT_ADCFIFO);
comedi_spin_unlock_irqrestore(&dev->spinlock, flags);
// set start trigger and burst mode
/* set start trigger and burst mode */
bits = 0;
if (cmd->start_src == TRIG_NOW)
bits |= SW_TRIGGER;
......@@ -1347,7 +1347,7 @@ static int cb_pcidas_ao_cmdtest(struct comedi_device * dev, struct comedi_subdev
if (err)
return 4;
// check channel/gain list against card's limitations
/* check channel/gain list against card's limitations */
if (cmd->chanlist && cmd->chanlist_len > 1) {
if (CR_CHAN(cmd->chanlist[0]) != 0 ||
CR_CHAN(cmd->chanlist[1]) != 1) {
......@@ -1370,25 +1370,25 @@ static int cb_pcidas_ao_cmd(struct comedi_device * dev, struct comedi_subdevice
unsigned int i;
unsigned long flags;
// set channel limits, gain
/* set channel limits, gain */
comedi_spin_lock_irqsave(&dev->spinlock, flags);
for (i = 0; i < cmd->chanlist_len; i++) {
// enable channel
/* enable channel */
devpriv->ao_control_bits |=
DAC_CHAN_EN(CR_CHAN(cmd->chanlist[i]));
// set range
/* set range */
devpriv->ao_control_bits |= DAC_RANGE(CR_CHAN(cmd->chanlist[i]),
CR_RANGE(cmd->chanlist[i]));
}
// disable analog out before settings pacer source and count values
/* disable analog out before settings pacer source and count values */
outw(devpriv->ao_control_bits, devpriv->control_status + DAC_CSR);
comedi_spin_unlock_irqrestore(&dev->spinlock, flags);
// clear fifo
/* clear fifo */
outw(0, devpriv->ao_registers + DACFIFOCLR);
// load counters
/* load counters */
if (cmd->scan_begin_src == TRIG_TIMER) {
i8253_cascade_ns_to_timer_2div(TIMER_BASE,
&(devpriv->ao_divisor1), &(devpriv->ao_divisor2),
......@@ -1400,11 +1400,11 @@ static int cb_pcidas_ao_cmd(struct comedi_device * dev, struct comedi_subdevice
i8254_load(devpriv->pacer_counter_dio + DAC8254, 0, 2,
devpriv->ao_divisor2, 2);
}
// set number of conversions
/* set number of conversions */
if (cmd->stop_src == TRIG_COUNT) {
devpriv->ao_count = cmd->chanlist_len * cmd->stop_arg;
}
// set pacer source
/* set pacer source */
comedi_spin_lock_irqsave(&dev->spinlock, flags);
switch (cmd->scan_begin_src) {
case TRIG_TIMER:
......@@ -1438,7 +1438,7 @@ static int cb_pcidas_ao_inttrig(struct comedi_device *dev,
if (trig_num != 0)
return -EINVAL;
// load up fifo
/* load up fifo */
if (cmd->stop_src == TRIG_COUNT && devpriv->ao_count < num_points)
num_points = devpriv->ao_count;
......@@ -1449,20 +1449,20 @@ static int cb_pcidas_ao_inttrig(struct comedi_device *dev,
if (cmd->stop_src == TRIG_COUNT) {
devpriv->ao_count -= num_points;
}
// write data to board's fifo
/* write data to board's fifo */
outsw(devpriv->ao_registers + DACDATA, devpriv->ao_buffer, num_bytes);
// enable dac half-full and empty interrupts
/* enable dac half-full and empty interrupts */
comedi_spin_lock_irqsave(&dev->spinlock, flags);
devpriv->adc_fifo_bits |= DAEMIE | DAHFIE;
#ifdef CB_PCIDAS_DEBUG
rt_printk("comedi: adc_fifo_bits are 0x%x\n", devpriv->adc_fifo_bits);
#endif
// enable and clear interrupts
/* enable and clear interrupts */
outw(devpriv->adc_fifo_bits | DAEMI | DAHFI,
devpriv->control_status + INT_ADCFIFO);
// start dac
/* start dac */
devpriv->ao_control_bits |= DAC_START | DACEN | DAC_EMPTY;
outw(devpriv->ao_control_bits, devpriv->control_status + DAC_CSR);
#ifdef CB_PCIDAS_DEBUG
......@@ -1503,9 +1503,9 @@ static irqreturn_t cb_pcidas_interrupt(int irq, void *d PT_REGS_ARG)
if ((INTCSR_INTR_ASSERTED & s5933_status) == 0)
return IRQ_NONE;
// make sure mailbox 4 is empty
/* make sure mailbox 4 is empty */
inl_p(devpriv->s5933_config + AMCC_OP_REG_IMB4);
// clear interrupt on amcc s5933
/* clear interrupt on amcc s5933 */
outl(devpriv->s5933_intcsr_bits | INTCSR_INBOX_INTR_STATUS,
devpriv->s5933_config + AMCC_OP_REG_INTCSR);
......@@ -1516,14 +1516,14 @@ static irqreturn_t cb_pcidas_interrupt(int irq, void *d PT_REGS_ARG)
}
#endif
// check for analog output interrupt
/* check for analog output interrupt */
if (status & (DAHFI | DAEMI)) {
handle_ao_interrupt(dev, status);
}
// check for analog input interrupts
// if fifo half-full
/* check for analog input interrupts */
/* if fifo half-full */
if (status & ADHFI) {
// read data
/* read data */
num_samples = half_fifo;
if (async->cmd.stop_src == TRIG_COUNT &&
num_samples > devpriv->count) {
......@@ -1538,15 +1538,15 @@ static irqreturn_t cb_pcidas_interrupt(int irq, void *d PT_REGS_ARG)
async->events |= COMEDI_CB_EOA;
cb_pcidas_cancel(dev, s);
}
// clear half-full interrupt latch
/* clear half-full interrupt latch */
comedi_spin_lock_irqsave(&dev->spinlock, flags);
outw(devpriv->adc_fifo_bits | INT,
devpriv->control_status + INT_ADCFIFO);
comedi_spin_unlock_irqrestore(&dev->spinlock, flags);
// else if fifo not empty
/* else if fifo not empty */
} else if (status & (ADNEI | EOBI)) {
for (i = 0; i < timeout; i++) {
// break if fifo is empty
/* break if fifo is empty */
if ((ADNE & inw(devpriv->control_status +
INT_ADCFIFO)) == 0)
break;
......@@ -1557,7 +1557,7 @@ static irqreturn_t cb_pcidas_interrupt(int irq, void *d PT_REGS_ARG)
break;
}
}
// clear not-empty interrupt latch
/* clear not-empty interrupt latch */
comedi_spin_lock_irqsave(&dev->spinlock, flags);
outw(devpriv->adc_fifo_bits | INT,
devpriv->control_status + INT_ADCFIFO);
......@@ -1565,16 +1565,16 @@ static irqreturn_t cb_pcidas_interrupt(int irq, void *d PT_REGS_ARG)
} else if (status & EOAI) {
comedi_error(dev,
"bug! encountered end of aquisition interrupt?");
// clear EOA interrupt latch
/* clear EOA interrupt latch */
comedi_spin_lock_irqsave(&dev->spinlock, flags);
outw(devpriv->adc_fifo_bits | EOAI,
devpriv->control_status + INT_ADCFIFO);
comedi_spin_unlock_irqrestore(&dev->spinlock, flags);
}
//check for fifo overflow
/* check for fifo overflow */
if (status & LADFUL) {
comedi_error(dev, "fifo overflow");
// clear overflow interrupt latch
/* clear overflow interrupt latch */
comedi_spin_lock_irqsave(&dev->spinlock, flags);
outw(devpriv->adc_fifo_bits | LADFUL,
devpriv->control_status + INT_ADCFIFO);
......@@ -1600,7 +1600,7 @@ static void handle_ao_interrupt(struct comedi_device * dev, unsigned int status)
async->events = 0;
if (status & DAEMI) {
// clear dac empty interrupt latch
/* clear dac empty interrupt latch */
comedi_spin_lock_irqsave(&dev->spinlock, flags);
outw(devpriv->adc_fifo_bits | DAEMI,
devpriv->control_status + INT_ADCFIFO);
......@@ -1618,7 +1618,7 @@ static void handle_ao_interrupt(struct comedi_device * dev, unsigned int status)
} else if (status & DAHFI) {
unsigned int num_bytes;
// figure out how many points we are writing to fifo
/* figure out how many points we are writing to fifo */
num_points = half_fifo;
if (cmd->stop_src == TRIG_COUNT &&
devpriv->ao_count < num_points)
......@@ -1631,10 +1631,10 @@ static void handle_ao_interrupt(struct comedi_device * dev, unsigned int status)
if (async->cmd.stop_src == TRIG_COUNT) {
devpriv->ao_count -= num_points;
}
// write data to board's fifo
/* write data to board's fifo */
outsw(devpriv->ao_registers + DACDATA, devpriv->ao_buffer,
num_points);
// clear half-full interrupt latch
/* clear half-full interrupt latch */
comedi_spin_lock_irqsave(&dev->spinlock, flags);
outw(devpriv->adc_fifo_bits | DAHFI,
devpriv->control_status + INT_ADCFIFO);
......@@ -1650,14 +1650,14 @@ static int cb_pcidas_cancel(struct comedi_device * dev, struct comedi_subdevice
unsigned long flags;
comedi_spin_lock_irqsave(&dev->spinlock, flags);
// disable interrupts
/* disable interrupts */
devpriv->adc_fifo_bits &= ~INTE & ~EOAIE;
outw(devpriv->adc_fifo_bits, devpriv->control_status + INT_ADCFIFO);
comedi_spin_unlock_irqrestore(&dev->spinlock, flags);
// disable start trigger source and burst mode
/* disable start trigger source and burst mode */
outw(0, devpriv->control_status + TRIG_CONTSTAT);
// software pacer source
/* software pacer source */
outw(0, devpriv->control_status + ADCMUX_CONT);
return 0;
......@@ -1670,11 +1670,11 @@ static int cb_pcidas_ao_cancel(struct comedi_device *dev,
unsigned long flags;
comedi_spin_lock_irqsave(&dev->spinlock, flags);
// disable interrupts
/* disable interrupts */
devpriv->adc_fifo_bits &= ~DAHFIE & ~DAEMIE;
outw(devpriv->adc_fifo_bits, devpriv->control_status + INT_ADCFIFO);
// disable output
/* disable output */
devpriv->ao_control_bits &= ~DACEN & ~DAC_PACER_MASK;
outw(devpriv->ao_control_bits, devpriv->control_status + DAC_CSR);
comedi_spin_unlock_irqrestore(&dev->spinlock, flags);
......
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