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-rw-r--r--drivers/staging/comedi/drivers/das6402.c672
1 files changed, 449 insertions, 223 deletions
diff --git a/drivers/staging/comedi/drivers/das6402.c b/drivers/staging/comedi/drivers/das6402.c
index 43027ee500e3..e0cfb6cb547b 100644
--- a/drivers/staging/comedi/drivers/das6402.c
+++ b/drivers/staging/comedi/drivers/das6402.c
@@ -1,309 +1,532 @@
/*
- Some comments on the code..
-
- - it shouldn't be necessary to use outb_p().
-
- - ignoreirq creates a race condition. It needs to be fixed.
-
+ * 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.
*/
/*
- comedi/drivers/das6402.c
- An experimental driver for Computerboards' DAS6402 I/O card
+ * Driver: das6402
+ * Description: Keithley Metrabyte DAS6402 (& compatibles)
+ * Devices: (Keithley Metrabyte) DAS6402-12 (das6402-12)
+ * (Keithley Metrabyte) 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)
+ */
- Copyright (C) 1999 Oystein Svendsen <svendsen@pvv.org>
+#include <linux/module.h>
+#include <linux/interrupt.h>
- 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.
+#include "../comedidev.h"
+#include "8253.h"
- 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)
-Author: Oystein Svendsen <svendsen@pvv.org>
-Status: bitrotten
-Devices: [Keithley Metrabyte] DAS6402 (das6402)
+ * 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)
+ }
+};
-This driver has suffered bitrot.
-*/
+/*
+ * 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)
+ }
+};
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include "../comedidev.h"
+struct das6402_boardinfo {
+ const char *name;
+ unsigned int maxdata;
+};
-#define DAS6402_SIZE 16
-
-#define N_WORDS (3000*64)
-
-#define STOP 0
-#define START 1
-
-#define SCANL 0x3f00
-#define BYTE unsigned char
-#define WORD unsigned short
-
-/*----- register 8 ----*/
-#define CLRINT 0x01
-#define CLRXTR 0x02
-#define CLRXIN 0x04
-#define EXTEND 0x10
-#define ARMED 0x20 /* enable conting of post sample conv */
-#define POSTMODE 0x40
-#define MHZ 0x80 /* 10 MHz clock */
-/*---------------------*/
-
-/*----- register 9 ----*/
-#define IRQ (0x04 << 4) /* these two are */
-#define IRQV 10 /* dependent on each other */
-
-#define CONVSRC 0x03 /* trig src is Intarnal pacer */
-#define BURSTEN 0x04 /* enable burst */
-#define XINTE 0x08 /* use external int. trig */
-#define INTE 0x80 /* enable analog interrupts */
-/*---------------------*/
-
-/*----- register 10 ---*/
-#define TGEN 0x01 /* Use pin DI1 for externl trigging? */
-#define TGSEL 0x02 /* Use edge triggering */
-#define TGPOL 0x04 /* active edge is falling */
-#define PRETRIG 0x08 /* pretrig */
-/*---------------------*/
-
-/*----- register 11 ---*/
-#define EOB 0x0c
-#define FIFOHFULL 0x08
-#define GAIN 0x01
-#define FIFONEPTY 0x04
-#define MODE 0x10
-#define SEM 0x20
-#define BIP 0x40
-/*---------------------*/
-
-#define M0 0x00
-#define M2 0x04
-
-#define C0 0x00
-#define C1 0x40
-#define C2 0x80
-#define RWLH 0x30
+struct das6402_boardinfo das6402_boards[] = {
+ {
+ .name = "das6402-12",
+ .maxdata = 0x0fff,
+ }, {
+ .name = "das6402-16",
+ .maxdata = 0xffff,
+ },
+};
struct das6402_private {
- int ai_bytes_to_read;
+ unsigned int irq;
+
+ unsigned int count;
+ unsigned int divider1;
+ unsigned int divider2;
- int das6402_ignoreirq;
+ unsigned int ao_range;
+ unsigned int ao_readback[2];
};
-static void das6402_ai_fifo_dregs(struct comedi_device *dev,
- struct comedi_subdevice *s)
+static void das6402_set_mode(struct comedi_device *dev,
+ unsigned int mode)
{
- while (1) {
- if (!(inb(dev->iobase + 8) & 0x01))
- return;
- comedi_buf_put(s->async, inw(dev->iobase));
- }
+ outb(DAS6402_MODE_ENHANCED | mode, dev->iobase + DAS6402_MODE_REG);
}
-static void das6402_setcounter(struct comedi_device *dev)
+static void das6402_set_extended(struct comedi_device *dev,
+ unsigned int val)
{
- BYTE p;
- unsigned short ctrlwrd;
-
- /* set up counter0 first, mode 0 */
- p = M0 | C0 | RWLH;
- outb_p(p, dev->iobase + 15);
- ctrlwrd = 2000;
- p = (BYTE) (0xff & ctrlwrd);
- outb_p(p, dev->iobase + 12);
- p = (BYTE) (0xff & (ctrlwrd >> 8));
- outb_p(p, dev->iobase + 12);
-
- /* set up counter1, mode 2 */
- p = M2 | C1 | RWLH;
- outb_p(p, dev->iobase + 15);
- ctrlwrd = 10;
- p = (BYTE) (0xff & ctrlwrd);
- outb_p(p, dev->iobase + 13);
- p = (BYTE) (0xff & (ctrlwrd >> 8));
- outb_p(p, dev->iobase + 13);
-
- /* set up counter1, mode 2 */
- p = M2 | C2 | RWLH;
- outb_p(p, dev->iobase + 15);
- ctrlwrd = 1000;
- p = (BYTE) (0xff & ctrlwrd);
- outb_p(p, dev->iobase + 14);
- p = (BYTE) (0xff & (ctrlwrd >> 8));
- outb_p(p, dev->iobase + 14);
+ 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 irqreturn_t intr_handler(int irq, void *d)
+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 void das6402_enable_counter(struct comedi_device *dev, bool load)
{
- struct comedi_device *dev = d;
struct das6402_private *devpriv = dev->private;
- struct comedi_subdevice *s = &dev->subdevices[0];
+ unsigned long timer_iobase = dev->iobase + DAS6402_TIMER_BASE;
- if (!dev->attached || devpriv->das6402_ignoreirq) {
- dev_warn(dev->class_dev, "BUG: spurious interrupt\n");
- return IRQ_HANDLED;
- }
+ if (load) {
+ i8254_set_mode(timer_iobase, 0, 0, I8254_MODE0 | I8254_BINARY);
+ i8254_set_mode(timer_iobase, 0, 1, I8254_MODE2 | I8254_BINARY);
+ i8254_set_mode(timer_iobase, 0, 2, I8254_MODE2 | I8254_BINARY);
- das6402_ai_fifo_dregs(dev, s);
+ i8254_write(timer_iobase, 0, 0, devpriv->count);
+ i8254_write(timer_iobase, 0, 1, devpriv->divider1);
+ i8254_write(timer_iobase, 0, 2, devpriv->divider2);
- if (s->async->buf_write_count >= devpriv->ai_bytes_to_read) {
- outw_p(SCANL, dev->iobase + 2); /* clears the fifo */
- outb(0x07, dev->iobase + 8); /* clears all flip-flops */
- s->async->events |= COMEDI_CB_EOA;
- comedi_event(dev, s);
+ } else {
+ i8254_set_mode(timer_iobase, 0, 0, I8254_MODE0 | I8254_BINARY);
+ i8254_set_mode(timer_iobase, 0, 1, I8254_MODE0 | I8254_BINARY);
+ i8254_set_mode(timer_iobase, 0, 2, I8254_MODE0 | I8254_BINARY);
}
+}
- outb(0x01, dev->iobase + 8); /* clear only the interrupt flip-flop */
+static irqreturn_t das6402_interrupt(int irq, void *d)
+{
+ struct comedi_device *dev = d;
+
+ das6402_clear_all_interrupts(dev);
- comedi_event(dev, s);
return IRQ_HANDLED;
}
-#if 0
-static void das6402_ai_fifo_read(struct comedi_device *dev, short *data, int n)
+static int das6402_ai_cmd(struct comedi_device *dev,
+ struct comedi_subdevice *s)
{
- int i;
+ return -EINVAL;
+}
- for (i = 0; i < n; i++)
- data[i] = inw(dev->iobase);
+static int das6402_ai_cmdtest(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_cmd *cmd)
+{
+ return -EINVAL;
}
-#endif
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 range = CR_RANGE(insn->chanspec);
+ unsigned int aref = CR_AREF(insn->chanspec);
+ unsigned int val;
+ int ret;
+ int i;
+
+ val = DAS6402_MODE_RANGE(range) | DAS6402_MODE_POLLED;
+ if (aref == AREF_DIFF) {
+ if (chan > s->n_chan / 2)
+ return -EINVAL;
+ } else {
+ val |= DAS6402_MODE_SE;
+ }
+ if (comedi_range_is_unipolar(s, range))
+ val |= DAS6402_MODE_UNI;
+
+ /* enable software conversion trigger */
+ outb(DAS6402_CTRL_SOFT_TRIG, dev->iobase + DAS6402_CTRL_REG);
+
+ das6402_set_mode(dev, val);
+
+ /* 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;
+
+ val = inw(dev->iobase + DAS6402_AI_DATA_REG);
+
+ if (s->maxdata == 0x0fff)
+ val >>= 4;
+
+ data[i] = val;
+ }
+
+ 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);
+ }
/*
- * This function should reset the board from whatever condition it
- * is in (i.e., acquiring data), to a non-active state.
+ * 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];
+
+ devpriv->ao_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));
+ }
+ }
- devpriv->das6402_ignoreirq = 1;
- dev_dbg(dev->class_dev, "Stopping acquisition\n");
- devpriv->das6402_ignoreirq = 1;
- outb_p(0x02, dev->iobase + 10); /* disable external trigging */
- outw_p(SCANL, dev->iobase + 2); /* resets the card fifo */
- outb_p(0, dev->iobase + 9); /* disables interrupts */
-
- outw_p(SCANL, dev->iobase + 2);
-
- return 0;
+ return insn->n;
}
-#ifdef unused
-static int das6402_ai_mode2(struct comedi_device *dev,
- struct comedi_subdevice *s, comedi_trig *it)
+static int das6402_ao_insn_read(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);
+ int i;
- devpriv->das6402_ignoreirq = 1;
- dev_dbg(dev->class_dev, "Starting acquisition\n");
- outb_p(0x03, dev->iobase + 10); /* enable external trigging */
- outw_p(SCANL, dev->iobase + 2); /* resets the card fifo */
- outb_p(IRQ | CONVSRC | BURSTEN | INTE, dev->iobase + 9);
+ /*
+ * If XFER mode is enabled, reading any DAC register
+ * will update both DAC's simultaneously.
+ */
+ inw(dev->iobase + DAS6402_AO_LSB_REG(chan));
- devpriv->ai_bytes_to_read = it->n * sizeof(short);
+ for (i = 0; i < insn->n; i++)
+ data[i] = devpriv->ao_readback[chan];
- /* um... ignoreirq is a nasty race condition */
- devpriv->das6402_ignoreirq = 0;
+ return insn->n;
+}
- outw_p(SCANL, dev->iobase + 2);
+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 0;
+ return insn->n;
}
-#endif
-static int board_init(struct comedi_device *dev)
+static int das6402_do_insn_bits(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned int *data)
{
- struct das6402_private *devpriv = dev->private;
- BYTE b;
+ if (comedi_dio_update_state(s, data))
+ outb(s->state, dev->iobase + DAS6402_DI_DO_REG);
- devpriv->das6402_ignoreirq = 1;
+ data[1] = s->state;
- outb(0x07, dev->iobase + 8);
+ return insn->n;
+}
- /* register 11 */
- outb_p(MODE, dev->iobase + 11);
- b = BIP | SEM | MODE | GAIN | FIFOHFULL;
- outb_p(b, dev->iobase + 11);
+static void das6402_reset(struct comedi_device *dev)
+{
+ struct das6402_private *devpriv = dev->private;
- /* register 8 */
- outb_p(EXTEND, dev->iobase + 8);
- b = EXTEND | MHZ;
- outb_p(b, dev->iobase + 8);
- b = MHZ | CLRINT | CLRXTR | CLRXIN;
- outb_p(b, dev->iobase + 8);
+ /* enable "Enhanced" mode */
+ outb(DAS6402_MODE_ENHANCED, dev->iobase + DAS6402_MODE_REG);
- /* register 9 */
- b = IRQ | CONVSRC | BURSTEN | INTE;
- outb_p(b, dev->iobase + 9);
+ /* enable 10MHz pacer clock */
+ das6402_set_extended(dev, DAS6402_STATUS_W_10MHZ);
- /* register 10 */
- b = TGSEL | TGEN;
- outb_p(b, dev->iobase + 10);
+ /* enable software conversion trigger */
+ outb(DAS6402_CTRL_SOFT_TRIG, dev->iobase + DAS6402_CTRL_REG);
- b = 0x07;
- outb_p(b, dev->iobase + 8);
+ /* 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);
- das6402_setcounter(dev);
+ /* 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);
- outw_p(SCANL, dev->iobase + 2); /* reset card fifo */
+ /* 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);
- devpriv->das6402_ignoreirq = 0;
+ /* 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));
- return 0;
+ das6402_enable_counter(dev, false);
+
+ /* 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 = comedi_board(dev);
struct das6402_private *devpriv;
- unsigned int irq;
- int ret;
struct comedi_subdevice *s;
-
- ret = comedi_request_region(dev, it->options[0], DAS6402_SIZE);
- if (ret)
- return ret;
-
- irq = it->options[0];
- dev_dbg(dev->class_dev, "( irq = %u )\n", irq);
- ret = request_irq(irq, intr_handler, 0, "das6402", dev);
- if (ret < 0)
- return ret;
-
- dev->irq = irq;
+ int ret;
devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
if (!devpriv)
return -ENOMEM;
- ret = comedi_alloc_subdevices(dev, 1);
+ ret = comedi_request_region(dev, it->options[0], 0x10);
if (ret)
return ret;
- /* ai subdevice */
+ 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;
+ }
+ }
+ }
+
+ 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;
- s->n_chan = 8;
- /* s->trig[2]=das6402_ai_mode2; */
- s->cancel = das6402_ai_cancel;
- s->maxdata = (1 << 12) - 1;
- s->len_chanlist = 16; /* ? */
- s->range_table = &range_unknown;
+ 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;
+ }
- board_init(dev);
+ /* Analog Output subdevice */
+ s = &dev->subdevices[1];
+ s->type = COMEDI_SUBD_AO;
+ s->subdev_flags = SDF_WRITEABLE;
+ 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;
+
+ /* 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_WRITEABLE;
+ s->n_chan = 8;
+ s->maxdata = 1;
+ s->range_table = &range_digital;
+ s->insn_bits = das6402_do_insn_bits;
return 0;
}
@@ -313,9 +536,12 @@ static struct comedi_driver das6402_driver = {
.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("Comedi http://www.comedi.org");
-MODULE_DESCRIPTION("Comedi low-level driver");
+MODULE_AUTHOR("H Hartley Sweeten <hsweeten@visionengravers.com>");
+MODULE_DESCRIPTION("Comedi driver for DAS6402 compatible boards");
MODULE_LICENSE("GPL");
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.