--- /dev/null
+/*
+ * das6402.c
+ * Comedi driver for DAS6402 compatible boards
+ * Copyright(c) 2014 H Hartley Sweeten <hsweeten@visionengravers.com>
+ *
+ * Rewrite of an experimental driver by:
+ * Copyright (C) 1999 Oystein Svendsen <svendsen@pvv.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.
+ */
+
+/*
+ * Driver: das6402
+ * Description: Keithley Metrabyte DAS6402 (& compatibles)
+ * Devices: [Keithley Metrabyte] DAS6402-12 (das6402-12),
+ * DAS6402-16 (das6402-16)
+ * Author: H Hartley Sweeten <hsweeten@visionengravers.com>
+ * Updated: Fri, 14 Mar 2014 10:18:43 -0700
+ * Status: unknown
+ *
+ * Configuration Options:
+ * [0] - I/O base address
+ * [1] - IRQ (optional, needed for async command support)
+ */
+
+#include <linux/module.h>
+#include <linux/interrupt.h>
+
+#include "../comedidev.h"
+
+#include "comedi_8254.h"
+
+/*
+ * Register I/O map
+ */
+#define DAS6402_AI_DATA_REG 0x00
+#define DAS6402_AI_MUX_REG 0x02
+#define DAS6402_AI_MUX_LO(x) (((x) & 0x3f) << 0)
+#define DAS6402_AI_MUX_HI(x) (((x) & 0x3f) << 8)
+#define DAS6402_DI_DO_REG 0x03
+#define DAS6402_AO_DATA_REG(x) (0x04 + ((x) * 2))
+#define DAS6402_AO_LSB_REG(x) (0x04 + ((x) * 2))
+#define DAS6402_AO_MSB_REG(x) (0x05 + ((x) * 2))
+#define DAS6402_STATUS_REG 0x08
+#define DAS6402_STATUS_FFNE (1 << 0)
+#define DAS6402_STATUS_FHALF (1 << 1)
+#define DAS6402_STATUS_FFULL (1 << 2)
+#define DAS6402_STATUS_XINT (1 << 3)
+#define DAS6402_STATUS_INT (1 << 4)
+#define DAS6402_STATUS_XTRIG (1 << 5)
+#define DAS6402_STATUS_INDGT (1 << 6)
+#define DAS6402_STATUS_10MHZ (1 << 7)
+#define DAS6402_STATUS_W_CLRINT (1 << 0)
+#define DAS6402_STATUS_W_CLRXTR (1 << 1)
+#define DAS6402_STATUS_W_CLRXIN (1 << 2)
+#define DAS6402_STATUS_W_EXTEND (1 << 4)
+#define DAS6402_STATUS_W_ARMED (1 << 5)
+#define DAS6402_STATUS_W_POSTMODE (1 << 6)
+#define DAS6402_STATUS_W_10MHZ (1 << 7)
+#define DAS6402_CTRL_REG 0x09
+#define DAS6402_CTRL_SOFT_TRIG (0 << 0)
+#define DAS6402_CTRL_EXT_FALL_TRIG (1 << 0)
+#define DAS6402_CTRL_EXT_RISE_TRIG (2 << 0)
+#define DAS6402_CTRL_PACER_TRIG (3 << 0)
+#define DAS6402_CTRL_BURSTEN (1 << 2)
+#define DAS6402_CTRL_XINTE (1 << 3)
+#define DAS6402_CTRL_IRQ(x) ((x) << 4)
+#define DAS6402_CTRL_INTE (1 << 7)
+#define DAS6402_TRIG_REG 0x0a
+#define DAS6402_TRIG_TGEN (1 << 0)
+#define DAS6402_TRIG_TGSEL (1 << 1)
+#define DAS6402_TRIG_TGPOL (1 << 2)
+#define DAS6402_TRIG_PRETRIG (1 << 3)
+#define DAS6402_AO_RANGE(_chan, _range) ((_range) << ((_chan) ? 6 : 4))
+#define DAS6402_AO_RANGE_MASK(_chan) (3 << ((_chan) ? 6 : 4))
+#define DAS6402_MODE_REG 0x0b
+#define DAS6402_MODE_RANGE(x) ((x) << 0)
+#define DAS6402_MODE_POLLED (0 << 2)
+#define DAS6402_MODE_FIFONEPTY (1 << 2)
+#define DAS6402_MODE_FIFOHFULL (2 << 2)
+#define DAS6402_MODE_EOB (3 << 2)
+#define DAS6402_MODE_ENHANCED (1 << 4)
+#define DAS6402_MODE_SE (1 << 5)
+#define DAS6402_MODE_UNI (1 << 6)
+#define DAS6402_MODE_DMA1 (0 << 7)
+#define DAS6402_MODE_DMA3 (1 << 7)
+#define DAS6402_TIMER_BASE 0x0c
+
+static const struct comedi_lrange das6402_ai_ranges = {
+ 8, {
+ BIP_RANGE(10),
+ BIP_RANGE(5),
+ BIP_RANGE(2.5),
+ BIP_RANGE(1.25),
+ UNI_RANGE(10),
+ UNI_RANGE(5),
+ UNI_RANGE(2.5),
+ UNI_RANGE(1.25)
+ }
+};
+
+/*
+ * Analog output ranges are programmable on the DAS6402/12.
+ * For the DAS6402/16 the range bits have no function, the
+ * DAC ranges are selected by switches on the board.
+ */
+static const struct comedi_lrange das6402_ao_ranges = {
+ 4, {
+ BIP_RANGE(5),
+ BIP_RANGE(10),
+ UNI_RANGE(5),
+ UNI_RANGE(10)
+ }
+};
+
+struct das6402_boardinfo {
+ const char *name;
+ unsigned int maxdata;
+};
+
+static struct das6402_boardinfo das6402_boards[] = {
+ {
+ .name = "das6402-12",
+ .maxdata = 0x0fff,
+ }, {
+ .name = "das6402-16",
+ .maxdata = 0xffff,
+ },
+};
+
+struct das6402_private {
+ unsigned int irq;
+ unsigned int ao_range;
+};
+
+static void das6402_set_mode(struct comedi_device *dev,
+ unsigned int mode)
+{
+ outb(DAS6402_MODE_ENHANCED | mode, dev->iobase + DAS6402_MODE_REG);
+}
+
+static void das6402_set_extended(struct comedi_device *dev,
+ unsigned int val)
+{
+ outb(DAS6402_STATUS_W_EXTEND, dev->iobase + DAS6402_STATUS_REG);
+ outb(DAS6402_STATUS_W_EXTEND | val, dev->iobase + DAS6402_STATUS_REG);
+ outb(val, dev->iobase + DAS6402_STATUS_REG);
+}
+
+static void das6402_clear_all_interrupts(struct comedi_device *dev)
+{
+ outb(DAS6402_STATUS_W_CLRINT |
+ DAS6402_STATUS_W_CLRXTR |
+ DAS6402_STATUS_W_CLRXIN, dev->iobase + DAS6402_STATUS_REG);
+}
+
+static void das6402_ai_clear_eoc(struct comedi_device *dev)
+{
+ outb(DAS6402_STATUS_W_CLRINT, dev->iobase + DAS6402_STATUS_REG);
+}
+
+static unsigned int das6402_ai_read_sample(struct comedi_device *dev,
+ struct comedi_subdevice *s)
+{
+ unsigned int val;
+
+ val = inw(dev->iobase + DAS6402_AI_DATA_REG);
+ if (s->maxdata == 0x0fff)
+ val >>= 4;
+ return val;
+}
+
+static irqreturn_t das6402_interrupt(int irq, void *d)
+{
+ struct comedi_device *dev = d;
+ struct comedi_subdevice *s = dev->read_subdev;
+ struct comedi_async *async = s->async;
+ struct comedi_cmd *cmd = &async->cmd;
+ unsigned int status;
+
+ status = inb(dev->iobase + DAS6402_STATUS_REG);
+ if ((status & DAS6402_STATUS_INT) == 0)
+ return IRQ_NONE;
+
+ if (status & DAS6402_STATUS_FFULL) {
+ async->events |= COMEDI_CB_OVERFLOW;
+ } else if (status & DAS6402_STATUS_FFNE) {
+ unsigned int val;
+
+ val = das6402_ai_read_sample(dev, s);
+ comedi_buf_write_samples(s, &val, 1);
+
+ if (cmd->stop_src == TRIG_COUNT &&
+ async->scans_done >= cmd->stop_arg)
+ async->events |= COMEDI_CB_EOA;
+ }
+
+ das6402_clear_all_interrupts(dev);
+
+ comedi_handle_events(dev, s);
+
+ return IRQ_HANDLED;
+}
+
+static void das6402_ai_set_mode(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ unsigned int chanspec,
+ unsigned int mode)
+{
+ unsigned int range = CR_RANGE(chanspec);
+ unsigned int aref = CR_AREF(chanspec);
+
+ mode |= DAS6402_MODE_RANGE(range);
+ if (aref == AREF_GROUND)
+ mode |= DAS6402_MODE_SE;
+ if (comedi_range_is_unipolar(s, range))
+ mode |= DAS6402_MODE_UNI;
+
+ das6402_set_mode(dev, mode);
+}
+
+static int das6402_ai_cmd(struct comedi_device *dev,
+ struct comedi_subdevice *s)
+{
+ struct das6402_private *devpriv = dev->private;
+ struct comedi_cmd *cmd = &s->async->cmd;
+ unsigned int chan_lo = CR_CHAN(cmd->chanlist[0]);
+ unsigned int chan_hi = CR_CHAN(cmd->chanlist[cmd->chanlist_len - 1]);
+
+ das6402_ai_set_mode(dev, s, cmd->chanlist[0], DAS6402_MODE_FIFONEPTY);
+
+ /* load the mux for chanlist conversion */
+ outw(DAS6402_AI_MUX_HI(chan_hi) | DAS6402_AI_MUX_LO(chan_lo),
+ dev->iobase + DAS6402_AI_MUX_REG);
+
+ comedi_8254_update_divisors(dev->pacer);
+ comedi_8254_pacer_enable(dev->pacer, 1, 2, true);
+
+ /* enable interrupt and pacer trigger */
+ outb(DAS6402_CTRL_INTE |
+ DAS6402_CTRL_IRQ(devpriv->irq) |
+ DAS6402_CTRL_PACER_TRIG, dev->iobase + DAS6402_CTRL_REG);
+
+ return 0;
+}
+
+static int das6402_ai_check_chanlist(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_cmd *cmd)
+{
+ unsigned int chan0 = CR_CHAN(cmd->chanlist[0]);
+ unsigned int range0 = CR_RANGE(cmd->chanlist[0]);
+ unsigned int aref0 = CR_AREF(cmd->chanlist[0]);
+ int i;
+
+ for (i = 1; i < cmd->chanlist_len; i++) {
+ unsigned int chan = CR_CHAN(cmd->chanlist[i]);
+ unsigned int range = CR_RANGE(cmd->chanlist[i]);
+ unsigned int aref = CR_AREF(cmd->chanlist[i]);
+
+ if (chan != chan0 + i) {
+ dev_dbg(dev->class_dev,
+ "chanlist must be consecutive\n");
+ return -EINVAL;
+ }
+
+ if (range != range0) {
+ dev_dbg(dev->class_dev,
+ "chanlist must have the same range\n");
+ return -EINVAL;
+ }
+
+ if (aref != aref0) {
+ dev_dbg(dev->class_dev,
+ "chanlist must have the same reference\n");
+ return -EINVAL;
+ }
+
+ if (aref0 == AREF_DIFF && chan > (s->n_chan / 2)) {
+ dev_dbg(dev->class_dev,
+ "chanlist differential channel to large\n");
+ return -EINVAL;
+ }
+ }
+ return 0;
+}
+
+static int das6402_ai_cmdtest(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_cmd *cmd)
+{
+ int err = 0;
+ unsigned int arg;
+
+ /* Step 1 : check if triggers are trivially valid */
+
+ err |= comedi_check_trigger_src(&cmd->start_src, TRIG_NOW);
+ err |= comedi_check_trigger_src(&cmd->scan_begin_src, TRIG_FOLLOW);
+ err |= comedi_check_trigger_src(&cmd->convert_src, TRIG_TIMER);
+ err |= comedi_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT);
+ err |= comedi_check_trigger_src(&cmd->stop_src, TRIG_COUNT | TRIG_NONE);
+
+ if (err)
+ return 1;
+
+ /* Step 2a : make sure trigger sources are unique */
+
+ err |= comedi_check_trigger_is_unique(cmd->stop_src);
+
+ /* Step 2b : and mutually compatible */
+
+ if (err)
+ return 2;
+
+ /* Step 3: check if arguments are trivially valid */
+
+ err |= comedi_check_trigger_arg_is(&cmd->start_arg, 0);
+ err |= comedi_check_trigger_arg_is(&cmd->scan_begin_arg, 0);
+ err |= comedi_check_trigger_arg_min(&cmd->convert_arg, 10000);
+ err |= comedi_check_trigger_arg_min(&cmd->chanlist_len, 1);
+ err |= comedi_check_trigger_arg_is(&cmd->scan_end_arg,
+ cmd->chanlist_len);
+
+ if (cmd->stop_src == TRIG_COUNT)
+ err |= comedi_check_trigger_arg_min(&cmd->stop_arg, 1);
+ else /* TRIG_NONE */
+ err |= comedi_check_trigger_arg_is(&cmd->stop_arg, 0);
+
+ if (err)
+ return 3;
+
+ /* step 4: fix up any arguments */
+
+ arg = cmd->convert_arg;
+ comedi_8254_cascade_ns_to_timer(dev->pacer, &arg, cmd->flags);
+ err |= comedi_check_trigger_arg_is(&cmd->convert_arg, arg);
+
+ if (err)
+ return 4;
+
+ /* Step 5: check channel list if it exists */
+ if (cmd->chanlist && cmd->chanlist_len > 0)
+ err |= das6402_ai_check_chanlist(dev, s, cmd);
+
+ if (err)
+ return 5;
+
+ return 0;
+}
+
+static int das6402_ai_cancel(struct comedi_device *dev,
+ struct comedi_subdevice *s)
+{
+ outb(DAS6402_CTRL_SOFT_TRIG, dev->iobase + DAS6402_CTRL_REG);
+
+ return 0;
+}
+
+static void das6402_ai_soft_trig(struct comedi_device *dev)
+{
+ outw(0, dev->iobase + DAS6402_AI_DATA_REG);
+}
+
+static int das6402_ai_eoc(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned long context)
+{
+ unsigned int status;
+
+ status = inb(dev->iobase + DAS6402_STATUS_REG);
+ if (status & DAS6402_STATUS_FFNE)
+ return 0;
+ return -EBUSY;
+}
+
+static int das6402_ai_insn_read(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned int *data)
+{
+ unsigned int chan = CR_CHAN(insn->chanspec);
+ unsigned int aref = CR_AREF(insn->chanspec);
+ int ret;
+ int i;
+
+ if (aref == AREF_DIFF && chan > (s->n_chan / 2))
+ return -EINVAL;
+
+ /* enable software conversion trigger */
+ outb(DAS6402_CTRL_SOFT_TRIG, dev->iobase + DAS6402_CTRL_REG);
+
+ das6402_ai_set_mode(dev, s, insn->chanspec, DAS6402_MODE_POLLED);
+
+ /* load the mux for single channel conversion */
+ outw(DAS6402_AI_MUX_HI(chan) | DAS6402_AI_MUX_LO(chan),
+ dev->iobase + DAS6402_AI_MUX_REG);
+
+ for (i = 0; i < insn->n; i++) {
+ das6402_ai_clear_eoc(dev);
+ das6402_ai_soft_trig(dev);
+
+ ret = comedi_timeout(dev, s, insn, das6402_ai_eoc, 0);
+ if (ret)
+ break;
+
+ data[i] = das6402_ai_read_sample(dev, s);
+ }
+
+ das6402_ai_clear_eoc(dev);
+
+ return insn->n;
+}
+
+static int das6402_ao_insn_write(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned int *data)
+{
+ struct das6402_private *devpriv = dev->private;
+ unsigned int chan = CR_CHAN(insn->chanspec);
+ unsigned int range = CR_RANGE(insn->chanspec);
+ unsigned int val;
+ int i;
+
+ /* set the range for this channel */
+ val = devpriv->ao_range;
+ val &= ~DAS6402_AO_RANGE_MASK(chan);
+ val |= DAS6402_AO_RANGE(chan, range);
+ if (val != devpriv->ao_range) {
+ devpriv->ao_range = val;
+ outb(val, dev->iobase + DAS6402_TRIG_REG);
+ }
+
+ /*
+ * The DAS6402/16 has a jumper to select either individual
+ * update (UPDATE) or simultaneous updating (XFER) of both
+ * DAC's. In UPDATE mode, when the MSB is written, that DAC
+ * is updated. In XFER mode, after both DAC's are loaded,
+ * a read cycle of any DAC register will update both DAC's
+ * simultaneously.
+ *
+ * If you have XFER mode enabled a (*insn_read) will need
+ * to be performed in order to update the DAC's with the
+ * last value written.
+ */
+ for (i = 0; i < insn->n; i++) {
+ val = data[i];
+
+ s->readback[chan] = val;
+
+ if (s->maxdata == 0x0fff) {
+ /*
+ * DAS6402/12 has the two 8-bit DAC registers, left
+ * justified (the 4 LSB bits are don't care). Data
+ * can be written as one word.
+ */
+ val <<= 4;
+ outw(val, dev->iobase + DAS6402_AO_DATA_REG(chan));
+ } else {
+ /*
+ * DAS6402/16 uses both 8-bit DAC registers and needs
+ * to be written LSB then MSB.
+ */
+ outb(val & 0xff,
+ dev->iobase + DAS6402_AO_LSB_REG(chan));
+ outb((val >> 8) & 0xff,
+ dev->iobase + DAS6402_AO_LSB_REG(chan));
+ }
+ }
+
+ return insn->n;
+}
+
+static int das6402_ao_insn_read(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned int *data)
+{
+ unsigned int chan = CR_CHAN(insn->chanspec);
+
+ /*
+ * If XFER mode is enabled, reading any DAC register
+ * will update both DAC's simultaneously.
+ */
+ inw(dev->iobase + DAS6402_AO_LSB_REG(chan));
+
+ return comedi_readback_insn_read(dev, s, insn, data);
+}
+
+static int das6402_di_insn_bits(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned int *data)
+{
+ data[1] = inb(dev->iobase + DAS6402_DI_DO_REG);
+
+ return insn->n;
+}
+
+static int das6402_do_insn_bits(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned int *data)
+{
+ if (comedi_dio_update_state(s, data))
+ outb(s->state, dev->iobase + DAS6402_DI_DO_REG);
+
+ data[1] = s->state;
+
+ return insn->n;
+}
+
+static void das6402_reset(struct comedi_device *dev)
+{
+ struct das6402_private *devpriv = dev->private;
+
+ /* enable "Enhanced" mode */
+ outb(DAS6402_MODE_ENHANCED, dev->iobase + DAS6402_MODE_REG);
+
+ /* enable 10MHz pacer clock */
+ das6402_set_extended(dev, DAS6402_STATUS_W_10MHZ);
+
+ /* enable software conversion trigger */
+ outb(DAS6402_CTRL_SOFT_TRIG, dev->iobase + DAS6402_CTRL_REG);
+
+ /* default ADC to single-ended unipolar 10V inputs */
+ das6402_set_mode(dev, DAS6402_MODE_RANGE(0) |
+ DAS6402_MODE_POLLED |
+ DAS6402_MODE_SE |
+ DAS6402_MODE_UNI);
+
+ /* default mux for single channel conversion (channel 0) */
+ outw(DAS6402_AI_MUX_HI(0) | DAS6402_AI_MUX_LO(0),
+ dev->iobase + DAS6402_AI_MUX_REG);
+
+ /* set both DAC's for unipolar 5V output range */
+ devpriv->ao_range = DAS6402_AO_RANGE(0, 2) | DAS6402_AO_RANGE(1, 2);
+ outb(devpriv->ao_range, dev->iobase + DAS6402_TRIG_REG);
+
+ /* set both DAC's to 0V */
+ outw(0, dev->iobase + DAS6402_AO_DATA_REG(0));
+ outw(0, dev->iobase + DAS6402_AO_DATA_REG(0));
+ inw(dev->iobase + DAS6402_AO_LSB_REG(0));
+
+ /* set all digital outputs low */
+ outb(0, dev->iobase + DAS6402_DI_DO_REG);
+
+ das6402_clear_all_interrupts(dev);
+}
+
+static int das6402_attach(struct comedi_device *dev,
+ struct comedi_devconfig *it)
+{
+ const struct das6402_boardinfo *board = dev->board_ptr;
+ struct das6402_private *devpriv;
+ struct comedi_subdevice *s;
+ int ret;
+
+ devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
+ if (!devpriv)
+ return -ENOMEM;
+
+ ret = comedi_request_region(dev, it->options[0], 0x10);
+ if (ret)
+ return ret;
+
+ das6402_reset(dev);
+
+ /* IRQs 2,3,5,6,7, 10,11,15 are valid for "enhanced" mode */
+ if ((1 << it->options[1]) & 0x8cec) {
+ ret = request_irq(it->options[1], das6402_interrupt, 0,
+ dev->board_name, dev);
+ if (ret == 0) {
+ dev->irq = it->options[1];
+
+ switch (dev->irq) {
+ case 10:
+ devpriv->irq = 4;
+ break;
+ case 11:
+ devpriv->irq = 1;
+ break;
+ case 15:
+ devpriv->irq = 6;
+ break;
+ default:
+ devpriv->irq = dev->irq;
+ break;
+ }
+ }
+ }
+
+ dev->pacer = comedi_8254_init(dev->iobase + DAS6402_TIMER_BASE,
+ I8254_OSC_BASE_10MHZ, I8254_IO8, 0);
+ if (!dev->pacer)
+ return -ENOMEM;
+
+ ret = comedi_alloc_subdevices(dev, 4);
+ if (ret)
+ return ret;
+
+ /* Analog Input subdevice */
+ s = &dev->subdevices[0];
+ s->type = COMEDI_SUBD_AI;
+ s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_DIFF;
+ s->n_chan = 64;
+ s->maxdata = board->maxdata;
+ s->range_table = &das6402_ai_ranges;
+ s->insn_read = das6402_ai_insn_read;
+ if (dev->irq) {
+ dev->read_subdev = s;
+ s->subdev_flags |= SDF_CMD_READ;
+ s->len_chanlist = s->n_chan;
+ s->do_cmdtest = das6402_ai_cmdtest;
+ s->do_cmd = das6402_ai_cmd;
+ s->cancel = das6402_ai_cancel;
+ }
+
+ /* Analog Output subdevice */
+ s = &dev->subdevices[1];
+ s->type = COMEDI_SUBD_AO;
+ s->subdev_flags = SDF_WRITABLE;
+ s->n_chan = 2;
+ s->maxdata = board->maxdata;
+ s->range_table = &das6402_ao_ranges;
+ s->insn_write = das6402_ao_insn_write;
+ s->insn_read = das6402_ao_insn_read;
+
+ ret = comedi_alloc_subdev_readback(s);
+ if (ret)
+ return ret;
+
+ /* Digital Input subdevice */
+ s = &dev->subdevices[2];
+ s->type = COMEDI_SUBD_DI;
+ s->subdev_flags = SDF_READABLE;
+ s->n_chan = 8;
+ s->maxdata = 1;
+ s->range_table = &range_digital;
+ s->insn_bits = das6402_di_insn_bits;
+
+ /* Digital Input subdevice */
+ s = &dev->subdevices[3];
+ s->type = COMEDI_SUBD_DO;
+ s->subdev_flags = SDF_WRITABLE;
+ s->n_chan = 8;
+ s->maxdata = 1;
+ s->range_table = &range_digital;
+ s->insn_bits = das6402_do_insn_bits;
+
+ return 0;
+}
+
+static struct comedi_driver das6402_driver = {
+ .driver_name = "das6402",
+ .module = THIS_MODULE,
+ .attach = das6402_attach,
+ .detach = comedi_legacy_detach,
+ .board_name = &das6402_boards[0].name,
+ .num_names = ARRAY_SIZE(das6402_boards),
+ .offset = sizeof(struct das6402_boardinfo),
+};
+module_comedi_driver(das6402_driver)
+
+MODULE_AUTHOR("H Hartley Sweeten <hsweeten@visionengravers.com>");
+MODULE_DESCRIPTION("Comedi driver for DAS6402 compatible boards");
+MODULE_LICENSE("GPL");
Code Review / kvmfornfv.git / blobdiff