Options:
0 Board base address
1 IRQ
- 2 first option for module 1
- 3 second option for module 1
- 4 first option for module 2
- 5 second option for module 2
- 6 first option for module 3
- 7 second option for module 3
-
-options for PCI-20006M:
-
-options for PCI-20341M:
- first: Analog input gain configuration
- 0 1
- 1 10
- 2 100
- 3 200
*/
#include <linux/module.h>
#define II20K_AO_MSB_REG(x) (0x0e + ((x) * 0x08))
#define II20K_AO_STRB_BOTH_REG 0x1b
-#define PCI20341_ID 0x77
-#define PCI20xxx_EMPTY_ID 0xff
-
-#define PCI20341_INIT 0x04
-#define PCI20341_REPMODE 0x00 /* single shot mode */
-#define PCI20341_PACER 0x00 /* Hardware Pacer disabled */
-#define PCI20341_CONFIG_REG 0x10
-#define PCI20341_MOD_STATUS 0x01
-#define PCI20341_OPT_REG 0x11
-#define PCI20341_SET_TIME_REG 0x15
-#define PCI20341_LCHAN_ADDR_REG 0x13
-#define PCI20341_CHAN_LIST 0x80
-#define PCI20341_CC_RESET 0x1b
-#define PCI20341_CHAN_RESET 0x19
-#define PCI20341_SOFT_PACER 0x04
-#define PCI20341_STATUS_REG 0x12
-#define PCI20341_LDATA 0x02
-#define PCI20341_DAISY_CHAIN 0x20 /* On-board inputs only */
-#define PCI20341_MUX 0x04 /* Enable on-board MUX */
-#define PCI20341_SCANLIST 0x80 /* Channel/Gain Scan List */
+#define II20K_ID_PCI200341M_1 0x77 /* 4 AI channels */
+#define II20K_AI_STATUS_CMD_REG 0x01
+#define II20K_AI_STATUS_CMD_BUSY (1 << 7)
+#define II20K_AI_STATUS_CMD_HW_ENA (1 << 1)
+#define II20K_AI_STATUS_CMD_EXT_START (1 << 0)
+#define II20K_AI_LSB_REG 0x02
+#define II20K_AI_MSB_REG 0x03
+#define II20K_AI_PACER_RESET_REG 0x04
+#define II20K_AI_16BIT_DATA_REG 0x06
+#define II20K_AI_CONF_REG 0x10
+#define II20K_AI_CONF_ENA (1 << 2)
+#define II20K_AI_OPT_REG 0x11
+#define II20K_AI_OPT_TRIG_ENA (1 << 5)
+#define II20K_AI_OPT_TRIG_INV (1 << 4)
+#define II20K_AI_OPT_TIMEBASE(x) (((x) & 0x3) << 1)
+#define II20K_AI_OPT_BURST_MODE (1 << 0)
+#define II20K_AI_STATUS_REG 0x12
+#define II20K_AI_STATUS_INT (1 << 7)
+#define II20K_AI_STATUS_TRIG (1 << 6)
+#define II20K_AI_STATUS_TRIG_ENA (1 << 5)
+#define II20K_AI_STATUS_PACER_ERR (1 << 2)
+#define II20K_AI_STATUS_DATA_ERR (1 << 1)
+#define II20K_AI_STATUS_SET_TIME_ERR (1 << 0)
+#define II20K_AI_LAST_CHAN_ADDR_REG 0x13
+#define II20K_AI_CUR_ADDR_REG 0x14
+#define II20K_AI_SET_TIME_REG 0x15
+#define II20K_AI_DELAY_LSB_REG 0x16
+#define II20K_AI_DELAY_MSB_REG 0x17
+#define II20K_AI_CHAN_ADV_REG 0x18
+#define II20K_AI_CHAN_RESET_REG 0x19
+#define II20K_AI_START_TRIG_REG 0x1a
+#define II20K_AI_COUNT_RESET_REG 0x1b
+#define II20K_AI_CHANLIST_REG 0x80
+#define II20K_AI_CHANLIST_ONBOARD_ONLY (1 << 5)
+#define II20K_AI_CHANLIST_GAIN(x) (((x) & 0x3) << 3)
+#define II20K_AI_CHANLIST_MUX_ENA (1 << 2)
+#define II20K_AI_CHANLIST_CHAN(x) (((x) & 0x3) << 0)
+#define II20K_AI_CHANLIST_LEN 0x80
/* the AO range is set by jumpers on the 20006M module */
static const struct comedi_lrange ii20k_ao_ranges = {
BIP_RANGE(10) /* Chan 0 - W1/W3 in Chan 1 - W2/W4 out */
}
};
-static const struct comedi_lrange range_bipolar0_5 = {
- 1, {
- BIP_RANGE(0.5)
- }
-};
-
-static const struct comedi_lrange range_bipolar0_05 = {
- 1, {
- BIP_RANGE(0.05)
- }
-};
-
-static const struct comedi_lrange range_bipolar0_025 = {
- 1, {
- BIP_RANGE(0.025)
- }
-};
-static const struct comedi_lrange *const ii20k_ai_ranges[] = {
- &range_bipolar5,
- &range_bipolar0_5,
- &range_bipolar0_05,
- &range_bipolar0_025,
+static const struct comedi_lrange ii20k_ai_ranges = {
+ 4, {
+ BIP_RANGE(5), /* gain 1 */
+ BIP_RANGE(0.5), /* gain 10 */
+ BIP_RANGE(0.05), /* gain 100 */
+ BIP_RANGE(0.025) /* gain 200 */
+ },
};
-static const int pci20341_timebase[] = { 0x00, 0x00, 0x00, 0x04 };
-static const int pci20341_settling_time[] = { 0x58, 0x58, 0x93, 0x99 };
-
struct ii20k_ao_private {
unsigned int last_data[2];
};
-struct ii20k_ai_private {
- int timebase;
- int settling_time;
- int ai_gain;
-};
-
struct pci20xxx_private {
void __iomem *ioaddr;
};
return insn->n;
}
+static int ii20k_ai_wait_eoc(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ int timeout)
+{
+ void __iomem *iobase = ii20k_module_iobase(dev, s);
+ unsigned char status;
+
+ do {
+ status = readb(iobase + II20K_AI_STATUS_REG);
+ if ((status & II20K_AI_STATUS_INT) == 0)
+ return 0;
+ } while (timeout--);
+
+ return -ETIME;
+}
+
+static void ii20k_ai_setup(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ unsigned int chanspec)
+{
+ void __iomem *iobase = ii20k_module_iobase(dev, s);
+ unsigned int chan = CR_CHAN(chanspec);
+ unsigned int range = CR_RANGE(chanspec);
+ unsigned char val;
+
+ /* initialize module */
+ writeb(II20K_AI_CONF_ENA, iobase + II20K_AI_CONF_REG);
+
+ /* software conversion */
+ writeb(0, iobase + II20K_AI_STATUS_CMD_REG);
+
+ /* set the time base for the settling time counter based on the gain */
+ val = (range < 3) ? II20K_AI_OPT_TIMEBASE(0) : II20K_AI_OPT_TIMEBASE(2);
+ writeb(val, iobase + II20K_AI_OPT_REG);
+
+ /* set the settling time counter based on the gain */
+ val = (range < 2) ? 0x58 : (range < 3) ? 0x93 : 0x99;
+ writeb(val, iobase + II20K_AI_SET_TIME_REG);
+
+ /* set number of input channels */
+ writeb(1, iobase + II20K_AI_LAST_CHAN_ADDR_REG);
+
+ /* set the channel list byte */
+ val = II20K_AI_CHANLIST_ONBOARD_ONLY |
+ II20K_AI_CHANLIST_MUX_ENA |
+ II20K_AI_CHANLIST_GAIN(range) |
+ II20K_AI_CHANLIST_CHAN(chan);
+ writeb(val, iobase + II20K_AI_CHANLIST_REG);
+
+ /* reset settling time counter and trigger delay counter */
+ writeb(0, iobase + II20K_AI_COUNT_RESET_REG);
+
+ /* reset channel scanner */
+ writeb(0, iobase + II20K_AI_CHAN_RESET_REG);
+}
+
static int ii20k_ai_insn_read(struct comedi_device *dev,
struct comedi_subdevice *s,
struct comedi_insn *insn,
unsigned int *data)
{
- struct ii20k_ai_private *ai_spriv = s->private;
void __iomem *iobase = ii20k_module_iobase(dev, s);
- unsigned int i = 0, j = 0;
- int lo, hi;
- unsigned char eoc; /* end of conversion */
- unsigned int clb; /* channel list byte */
- unsigned int boarddata;
-
- /* write number of input channels */
- writeb(1, iobase + PCI20341_LCHAN_ADDR_REG);
- clb = PCI20341_DAISY_CHAIN | PCI20341_MUX | (ai_spriv->ai_gain << 3)
- | CR_CHAN(insn->chanspec);
- writeb(clb, iobase + PCI20341_CHAN_LIST);
+ int ret;
+ int i;
- /* reset settling time counter and trigger delay counter */
- writeb(0x00, iobase + PCI20341_CC_RESET);
+ ii20k_ai_setup(dev, s, insn->chanspec);
- writeb(0x00, iobase + PCI20341_CHAN_RESET);
+ for (i = 0; i < insn->n; i++) {
+ unsigned int val;
- /* generate Pacer */
+ /* generate a software start convert signal */
+ readb(iobase + II20K_AI_PACER_RESET_REG);
- for (i = 0; i < insn->n; i++) {
- /* data polling isn't the niciest way to get the data, I know,
- * but there are only 6 cycles (mean) and it is easier than
- * the whole interrupt stuff
- */
- j = 0;
- /* generate Pacer */
- readb(iobase + PCI20341_SOFT_PACER);
-
- eoc = readb(iobase + PCI20341_STATUS_REG);
- /* poll Interrupt Flag */
- while ((eoc < 0x80) && j < 100) {
- j++;
- eoc = readb(iobase + PCI20341_STATUS_REG);
- }
- if (j >= 100) {
- dev_warn(dev->class_dev,
- "AI interrupt channel %i polling exit !\n", i);
- return -EINVAL;
- }
- lo = readb(iobase + PCI20341_LDATA);
- hi = readb(iobase + PCI20341_LDATA + 1);
- boarddata = lo + 0x100 * hi;
-
- /* board-data -> comedi-data */
- data[i] = (short)((boarddata + 0x8000) & 0xffff);
- }
+ ret = ii20k_ai_wait_eoc(dev, s, 100);
+ if (ret)
+ return ret;
- return i;
-}
+ val = readb(iobase + II20K_AI_LSB_REG);
+ val |= (readb(iobase + II20K_AI_MSB_REG) << 8);
-static void ii20k_ai_init(struct comedi_device *dev,
- struct comedi_subdevice *s)
-{
- struct ii20k_ai_private *ai_spriv = s->private;
- void __iomem *iobase = ii20k_module_iobase(dev, s);
- unsigned char option;
-
- /* depends on gain, trigger, repetition mode */
- option = ai_spriv->timebase | PCI20341_REPMODE;
-
- /* initialize Module */
- writeb(PCI20341_INIT, iobase + PCI20341_CONFIG_REG);
- /* set Pacer */
- writeb(PCI20341_PACER, iobase + PCI20341_MOD_STATUS);
- /* option register */
- writeb(option, iobase + PCI20341_OPT_REG);
- /* settling time counter */
- writeb(ai_spriv->settling_time, iobase + PCI20341_SET_TIME_REG);
- /* trigger not implemented */
+ /* munge two's complement data */
+ val += ((s->maxdata + 1) >> 1);
+ val &= s->maxdata;
+
+ data[i] = val;
+ }
+
+ return insn->n;
}
static void ii20k_dio_config(struct comedi_device *dev,
}
static int ii20k_init_module(struct comedi_device *dev,
- struct comedi_subdevice *s,
- struct comedi_devconfig *it)
+ struct comedi_subdevice *s)
{
struct ii20k_ao_private *ao_spriv;
- struct ii20k_ai_private *ai_spriv;
void __iomem *iobase = ii20k_module_iobase(dev, s);
- unsigned int opt0 = it->options[(2 * s->index) + 2];
unsigned char id;
id = readb(iobase + II20K_ID_REG);
s->insn_read = ii20k_ao_insn_read;
s->insn_write = ii20k_ao_insn_write;
break;
- case PCI20341_ID:
- if (opt0 < 0 || opt0 > 3)
- opt0 = 0;
-
- ai_spriv = comedi_alloc_spriv(s, sizeof(*ai_spriv));
- if (!ai_spriv)
- return -ENOMEM;
-
- ai_spriv->timebase = pci20341_timebase[opt0];
- ai_spriv->settling_time = pci20341_settling_time[opt0];
-
+ case II20K_ID_PCI200341M_1:
/* Analog Input subdevice */
s->type = COMEDI_SUBD_AI;
- s->subdev_flags = SDF_READABLE;
+ s->subdev_flags = SDF_READABLE | SDF_DIFF;
s->n_chan = 4;
s->maxdata = 0xffff;
- s->range_table = ii20k_ai_ranges[opt0];
+ s->range_table = &ii20k_ai_ranges;
s->insn_read = ii20k_ai_insn_read;
-
- ii20k_ai_init(dev, s);
break;
- case PCI20xxx_EMPTY_ID:
default:
s->type = COMEDI_SUBD_UNUSED;
break;
if (id & II20K_ID_MOD1_EMPTY) {
s->type = COMEDI_SUBD_UNUSED;
} else {
- ret = ii20k_init_module(dev, s, it);
+ ret = ii20k_init_module(dev, s);
if (ret)
return ret;
}
if (id & II20K_ID_MOD2_EMPTY) {
s->type = COMEDI_SUBD_UNUSED;
} else {
- ret = ii20k_init_module(dev, s, it);
+ ret = ii20k_init_module(dev, s);
if (ret)
return ret;
}
if (id & II20K_ID_MOD3_EMPTY) {
s->type = COMEDI_SUBD_UNUSED;
} else {
- ret = ii20k_init_module(dev, s, it);
+ ret = ii20k_init_module(dev, s);
if (ret)
return ret;
}
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