/*
- comedi/drivers/das16cs.c
- Driver for Computer Boards PC-CARD DAS16/16.
+ * cb_das16_cs.c
+ * Driver for Computer Boards PC-CARD DAS16/16.
+ *
+ * COMEDI - Linux Control and Measurement Device Interface
+ * Copyright (C) 2000, 2001, 2002 David A. Schleef <ds@schleef.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * PCMCIA support code for this driver is adapted from the dummy_cs.c
+ * driver of the Linux PCMCIA Card Services package.
+ *
+ * The initial developer of the original code is David A. Hinds
+ * <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
+ * are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
+ */
- COMEDI - Linux Control and Measurement Device Interface
- Copyright (C) 2000, 2001, 2002 David A. Schleef <ds@schleef.org>
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- PCMCIA support code for this driver is adapted from the dummy_cs.c
- driver of the Linux PCMCIA Card Services package.
-
- The initial developer of the original code is David A. Hinds
- <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
- are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
-
-*/
/*
-Driver: cb_das16_cs
-Description: Computer Boards PC-CARD DAS16/16
-Devices: [ComputerBoards] PC-CARD DAS16/16 (cb_das16_cs), PC-CARD DAS16/16-AO
-Author: ds
-Updated: Mon, 04 Nov 2002 20:04:21 -0800
-Status: experimental
-*/
+ * Driver: cb_das16_cs
+ * Description: Computer Boards PC-CARD DAS16/16
+ * Devices: [ComputerBoards] PC-CARD DAS16/16 (cb_das16_cs),
+ * PC-CARD DAS16/16-AO
+ * Author: ds
+ * Updated: Mon, 04 Nov 2002 20:04:21 -0800
+ * Status: experimental
+ */
#include <linux/module.h>
#include <linux/interrupt.h>
#include "comedi_8254.h"
-#define DAS16CS_ADC_DATA 0
-#define DAS16CS_DIO_MUX 2
-#define DAS16CS_MISC1 4
-#define DAS16CS_MISC2 6
-#define DAS16CS_TIMER_BASE 8
-#define DAS16CS_DIO 16
+/*
+ * Register I/O map
+ */
+#define DAS16CS_AI_DATA_REG 0x00
+#define DAS16CS_AI_MUX_REG 0x02
+#define DAS16CS_AI_MUX_HI_CHAN(x) (((x) & 0xf) << 4)
+#define DAS16CS_AI_MUX_LO_CHAN(x) (((x) & 0xf) << 0)
+#define DAS16CS_AI_MUX_SINGLE_CHAN(x) (DAS16CS_AI_MUX_HI_CHAN(x) | \
+ DAS16CS_AI_MUX_LO_CHAN(x))
+#define DAS16CS_MISC1_REG 0x04
+#define DAS16CS_MISC1_INTE BIT(15) /* 1=enable; 0=disable */
+#define DAS16CS_MISC1_INT_SRC(x) (((x) & 0x7) << 12) /* interrupt src */
+#define DAS16CS_MISC1_INT_SRC_NONE DAS16CS_MISC1_INT_SRC(0)
+#define DAS16CS_MISC1_INT_SRC_PACER DAS16CS_MISC1_INT_SRC(1)
+#define DAS16CS_MISC1_INT_SRC_EXT DAS16CS_MISC1_INT_SRC(2)
+#define DAS16CS_MISC1_INT_SRC_FNE DAS16CS_MISC1_INT_SRC(3)
+#define DAS16CS_MISC1_INT_SRC_FHF DAS16CS_MISC1_INT_SRC(4)
+#define DAS16CS_MISC1_INT_SRC_EOS DAS16CS_MISC1_INT_SRC(5)
+#define DAS16CS_MISC1_INT_SRC_MASK DAS16CS_MISC1_INT_SRC(7)
+#define DAS16CS_MISC1_OVR BIT(10) /* ro - 1=FIFO overflow */
+#define DAS16CS_MISC1_AI_CONV(x) (((x) & 0x3) << 8) /* AI convert src */
+#define DAS16CS_MISC1_AI_CONV_SW DAS16CS_MISC1_AI_CONV(0)
+#define DAS16CS_MISC1_AI_CONV_EXT_NEG DAS16CS_MISC1_AI_CONV(1)
+#define DAS16CS_MISC1_AI_CONV_EXT_POS DAS16CS_MISC1_AI_CONV(2)
+#define DAS16CS_MISC1_AI_CONV_PACER DAS16CS_MISC1_AI_CONV(3)
+#define DAS16CS_MISC1_AI_CONV_MASK DAS16CS_MISC1_AI_CONV(3)
+#define DAS16CS_MISC1_EOC BIT(7) /* ro - 0=busy; 1=ready */
+#define DAS16CS_MISC1_SEDIFF BIT(5) /* 0=diff; 1=se */
+#define DAS16CS_MISC1_INTB BIT(4) /* ro - 0=latched; 1=cleared */
+#define DAS16CS_MISC1_MA_MASK (0xf << 0) /* ro - current ai mux */
+#define DAS16CS_MISC1_DAC1CS BIT(3) /* wo - DAC1 chip select */
+#define DAS16CS_MISC1_DACCLK BIT(2) /* wo - Serial DAC clock */
+#define DAS16CS_MISC1_DACSD BIT(1) /* wo - Serial DAC data */
+#define DAS16CS_MISC1_DAC0CS BIT(0) /* wo - DAC0 chip select */
+#define DAS16CS_MISC1_DAC_MASK (0x0f << 0)
+#define DAS16CS_MISC2_REG 0x06
+#define DAS16CS_MISC2_BME BIT(14) /* 1=burst enable; 0=disable */
+#define DAS16CS_MISC2_AI_GAIN(x) (((x) & 0xf) << 8) /* AI gain */
+#define DAS16CS_MISC2_AI_GAIN_1 DAS16CS_MISC2_AI_GAIN(4) /* +/-10V */
+#define DAS16CS_MISC2_AI_GAIN_2 DAS16CS_MISC2_AI_GAIN(0) /* +/-5V */
+#define DAS16CS_MISC2_AI_GAIN_4 DAS16CS_MISC2_AI_GAIN(1) /* +/-2.5V */
+#define DAS16CS_MISC2_AI_GAIN_8 DAS16CS_MISC2_AI_GAIN(2) /* +-1.25V */
+#define DAS16CS_MISC2_AI_GAIN_MASK DAS16CS_MISC2_AI_GAIN(0xf)
+#define DAS16CS_MISC2_UDIR BIT(7) /* 1=dio7:4 output; 0=input */
+#define DAS16CS_MISC2_LDIR BIT(6) /* 1=dio3:0 output; 0=input */
+#define DAS16CS_MISC2_TRGPOL BIT(5) /* 1=active lo; 0=hi */
+#define DAS16CS_MISC2_TRGSEL BIT(4) /* 1=edge; 0=level */
+#define DAS16CS_MISC2_FFNE BIT(3) /* ro - 1=FIFO not empty */
+#define DAS16CS_MISC2_TRGCLR BIT(3) /* wo - 1=clr (monstable) */
+#define DAS16CS_MISC2_CLK2 BIT(2) /* 1=10 MHz; 0=1 MHz */
+#define DAS16CS_MISC2_CTR1 BIT(1) /* 1=int. 100 kHz; 0=ext. clk */
+#define DAS16CS_MISC2_TRG0 BIT(0) /* 1=enable; 0=disable */
+#define DAS16CS_TIMER_BASE 0x08
+#define DAS16CS_DIO_REG 0x10
struct das16cs_board {
const char *name;
int device_id;
- int n_ao_chans;
+ unsigned int has_ao:1;
+ unsigned int has_4dio:1;
};
static const struct das16cs_board das16cs_boards[] = {
{
.name = "PC-CARD DAS16/16-AO",
.device_id = 0x0039,
- .n_ao_chans = 2,
+ .has_ao = 1,
+ .has_4dio = 1,
}, {
.name = "PCM-DAS16s/16",
.device_id = 0x4009,
- .n_ao_chans = 0,
}, {
.name = "PC-CARD DAS16/16",
.device_id = 0x0000, /* unknown */
- .n_ao_chans = 0,
},
};
struct das16cs_private {
- unsigned short status1;
- unsigned short status2;
+ unsigned short misc1;
+ unsigned short misc2;
};
static const struct comedi_lrange das16cs_ai_range = {
{
unsigned int status;
- status = inw(dev->iobase + DAS16CS_MISC1);
- if (status & 0x0080)
+ status = inw(dev->iobase + DAS16CS_MISC1_REG);
+ if (status & DAS16CS_MISC1_EOC)
return 0;
return -EBUSY;
}
-static int das16cs_ai_rinsn(struct comedi_device *dev,
- struct comedi_subdevice *s,
- struct comedi_insn *insn, unsigned int *data)
+static int das16cs_ai_insn_read(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned int *data)
{
struct das16cs_private *devpriv = dev->private;
int chan = CR_CHAN(insn->chanspec);
int ret;
int i;
- outw(chan, dev->iobase + DAS16CS_DIO_MUX);
+ outw(DAS16CS_AI_MUX_SINGLE_CHAN(chan),
+ dev->iobase + DAS16CS_AI_MUX_REG);
- devpriv->status1 &= ~0xf320;
- devpriv->status1 |= (aref == AREF_DIFF) ? 0 : 0x0020;
- outw(devpriv->status1, dev->iobase + DAS16CS_MISC1);
+ /* disable interrupts, software convert */
+ devpriv->misc1 &= ~(DAS16CS_MISC1_INTE | DAS16CS_MISC1_INT_SRC_MASK |
+ DAS16CS_MISC1_AI_CONV_MASK);
+ if (aref == AREF_DIFF)
+ devpriv->misc1 &= ~DAS16CS_MISC1_SEDIFF;
+ else
+ devpriv->misc1 |= DAS16CS_MISC1_SEDIFF;
+ outw(devpriv->misc1, dev->iobase + DAS16CS_MISC1_REG);
- devpriv->status2 &= ~0xff00;
+ devpriv->misc2 &= ~(DAS16CS_MISC2_BME | DAS16CS_MISC2_AI_GAIN_MASK);
switch (range) {
case 0:
- devpriv->status2 |= 0x800;
+ devpriv->misc2 |= DAS16CS_MISC2_AI_GAIN_1;
break;
case 1:
- devpriv->status2 |= 0x000;
+ devpriv->misc2 |= DAS16CS_MISC2_AI_GAIN_2;
break;
case 2:
- devpriv->status2 |= 0x100;
+ devpriv->misc2 |= DAS16CS_MISC2_AI_GAIN_4;
break;
case 3:
- devpriv->status2 |= 0x200;
+ devpriv->misc2 |= DAS16CS_MISC2_AI_GAIN_8;
break;
}
- outw(devpriv->status2, dev->iobase + DAS16CS_MISC2);
+ outw(devpriv->misc2, dev->iobase + DAS16CS_MISC2_REG);
for (i = 0; i < insn->n; i++) {
- outw(0, dev->iobase + DAS16CS_ADC_DATA);
+ outw(0, dev->iobase + DAS16CS_AI_DATA_REG);
ret = comedi_timeout(dev, s, insn, das16cs_ai_eoc, 0);
if (ret)
return ret;
- data[i] = inw(dev->iobase + DAS16CS_ADC_DATA);
+ data[i] = inw(dev->iobase + DAS16CS_AI_DATA_REG);
}
return i;
struct das16cs_private *devpriv = dev->private;
unsigned int chan = CR_CHAN(insn->chanspec);
unsigned int val = s->readback[chan];
- unsigned short status1;
+ unsigned short misc1;
int bit;
int i;
for (i = 0; i < insn->n; i++) {
val = data[i];
- outw(devpriv->status1, dev->iobase + DAS16CS_MISC1);
+ outw(devpriv->misc1, dev->iobase + DAS16CS_MISC1_REG);
udelay(1);
- status1 = devpriv->status1 & ~0xf;
+ /* raise the DACxCS line for the non-selected channel */
+ misc1 = devpriv->misc1 & ~DAS16CS_MISC1_DAC_MASK;
if (chan)
- status1 |= 0x0001;
+ misc1 |= DAS16CS_MISC1_DAC0CS;
else
- status1 |= 0x0008;
+ misc1 |= DAS16CS_MISC1_DAC1CS;
- outw(status1, dev->iobase + DAS16CS_MISC1);
+ outw(misc1, dev->iobase + DAS16CS_MISC1_REG);
udelay(1);
for (bit = 15; bit >= 0; bit--) {
- int b = (val >> bit) & 0x1;
-
- b <<= 1;
- outw(status1 | b | 0x0000, dev->iobase + DAS16CS_MISC1);
+ if ((val >> bit) & 0x1)
+ misc1 |= DAS16CS_MISC1_DACSD;
+ else
+ misc1 &= ~DAS16CS_MISC1_DACSD;
+ outw(misc1, dev->iobase + DAS16CS_MISC1_REG);
udelay(1);
- outw(status1 | b | 0x0004, dev->iobase + DAS16CS_MISC1);
+ outw(misc1 | DAS16CS_MISC1_DACCLK,
+ dev->iobase + DAS16CS_MISC1_REG);
udelay(1);
}
/*
* Make both DAC0CS and DAC1CS high to load
* the new data and update analog the output
*/
- outw(status1 | 0x9, dev->iobase + DAS16CS_MISC1);
+ outw(misc1 | DAS16CS_MISC1_DAC0CS | DAS16CS_MISC1_DAC1CS,
+ dev->iobase + DAS16CS_MISC1_REG);
}
s->readback[chan] = val;
unsigned int *data)
{
if (comedi_dio_update_state(s, data))
- outw(s->state, dev->iobase + DAS16CS_DIO);
+ outw(s->state, dev->iobase + DAS16CS_DIO_REG);
- data[1] = inw(dev->iobase + DAS16CS_DIO);
+ data[1] = inw(dev->iobase + DAS16CS_DIO_REG);
return insn->n;
}
if (ret)
return ret;
- devpriv->status2 &= ~0x00c0;
- devpriv->status2 |= (s->io_bits & 0xf0) ? 0x0080 : 0;
- devpriv->status2 |= (s->io_bits & 0x0f) ? 0x0040 : 0;
+ if (s->io_bits & 0xf0)
+ devpriv->misc2 |= DAS16CS_MISC2_UDIR;
+ else
+ devpriv->misc2 &= ~DAS16CS_MISC2_UDIR;
+ if (s->io_bits & 0x0f)
+ devpriv->misc2 |= DAS16CS_MISC2_LDIR;
+ else
+ devpriv->misc2 &= ~DAS16CS_MISC2_LDIR;
+ outw(devpriv->misc2, dev->iobase + DAS16CS_MISC2_REG);
+
+ return insn->n;
+}
+
+static int das16cs_counter_insn_config(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned int *data)
+{
+ struct das16cs_private *devpriv = dev->private;
- outw(devpriv->status2, dev->iobase + DAS16CS_MISC2);
+ switch (data[0]) {
+ case INSN_CONFIG_SET_CLOCK_SRC:
+ switch (data[1]) {
+ case 0: /* internal 100 kHz */
+ devpriv->misc2 |= DAS16CS_MISC2_CTR1;
+ break;
+ case 1: /* external */
+ devpriv->misc2 &= ~DAS16CS_MISC2_CTR1;
+ break;
+ default:
+ return -EINVAL;
+ }
+ outw(devpriv->misc2, dev->iobase + DAS16CS_MISC2_REG);
+ break;
+ case INSN_CONFIG_GET_CLOCK_SRC:
+ if (devpriv->misc2 & DAS16CS_MISC2_CTR1) {
+ data[1] = 0;
+ data[2] = I8254_OSC_BASE_100KHZ;
+ } else {
+ data[1] = 1;
+ data[2] = 0; /* unknown */
+ }
+ break;
+ default:
+ return -EINVAL;
+ }
return insn->n;
}
if (!dev->pacer)
return -ENOMEM;
- ret = comedi_alloc_subdevices(dev, 3);
+ ret = comedi_alloc_subdevices(dev, 4);
if (ret)
return ret;
+ /* Analog Input subdevice */
s = &dev->subdevices[0];
- /* analog input subdevice */
s->type = COMEDI_SUBD_AI;
- s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_DIFF | SDF_CMD_READ;
+ s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_DIFF;
s->n_chan = 16;
s->maxdata = 0xffff;
s->range_table = &das16cs_ai_range;
- s->len_chanlist = 16;
- s->insn_read = das16cs_ai_rinsn;
+ s->insn_read = das16cs_ai_insn_read;
+ /* Analog Output subdevice */
s = &dev->subdevices[1];
- /* analog output subdevice */
- if (board->n_ao_chans) {
+ if (board->has_ao) {
s->type = COMEDI_SUBD_AO;
s->subdev_flags = SDF_WRITABLE;
- s->n_chan = board->n_ao_chans;
+ s->n_chan = 2;
s->maxdata = 0xffff;
s->range_table = &range_bipolar10;
s->insn_write = &das16cs_ao_insn_write;
s->type = COMEDI_SUBD_UNUSED;
}
+ /* Digital I/O subdevice */
s = &dev->subdevices[2];
- /* digital i/o subdevice */
s->type = COMEDI_SUBD_DIO;
s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
- s->n_chan = 8;
+ s->n_chan = board->has_4dio ? 4 : 8;
s->maxdata = 1;
s->range_table = &range_digital;
s->insn_bits = das16cs_dio_insn_bits;
s->insn_config = das16cs_dio_insn_config;
+ /* Counter subdevice (8254) */
+ s = &dev->subdevices[3];
+ comedi_8254_subdevice_init(s, dev->pacer);
+
+ dev->pacer->insn_config = das16cs_counter_insn_config;
+
+ /* counters 1 and 2 are used internally for the pacer */
+ comedi_8254_set_busy(dev->pacer, 1, true);
+ comedi_8254_set_busy(dev->pacer, 2, true);
+
return 0;
}
Code Review / kvmfornfv.git / blobdiff