--- /dev/null
+/*
+ comedi/drivers/pcl726.c
+
+ hardware driver for Advantech cards:
+ card: PCL-726, PCL-727, PCL-728
+ driver: pcl726, pcl727, pcl728
+ and for ADLink cards:
+ card: ACL-6126, ACL-6128
+ driver: acl6126, acl6128
+
+ COMEDI - Linux Control and Measurement Device Interface
+ Copyright (C) 1998 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.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+/*
+Driver: pcl726
+Description: Advantech PCL-726 & compatibles
+Author: ds
+Status: untested
+Devices: [Advantech] PCL-726 (pcl726), PCL-727 (pcl727), PCL-728 (pcl728),
+ [ADLink] ACL-6126 (acl6126), ACL-6128 (acl6128)
+
+Interrupts are not supported.
+
+ Options for PCL-726:
+ [0] - IO Base
+ [2]...[7] - D/A output range for channel 1-6:
+ 0: 0-5V, 1: 0-10V, 2: +/-5V, 3: +/-10V,
+ 4: 4-20mA, 5: unknown (external reference)
+
+ Options for PCL-727:
+ [0] - IO Base
+ [2]...[13] - D/A output range for channel 1-12:
+ 0: 0-5V, 1: 0-10V, 2: +/-5V,
+ 3: 4-20mA
+
+ Options for PCL-728 and ACL-6128:
+ [0] - IO Base
+ [2], [3] - D/A output range for channel 1 and 2:
+ 0: 0-5V, 1: 0-10V, 2: +/-5V, 3: +/-10V,
+ 4: 4-20mA, 5: 0-20mA
+
+ Options for ACL-6126:
+ [0] - IO Base
+ [1] - IRQ (0=disable, 3, 5, 6, 7, 9, 10, 11, 12, 15) (currently ignored)
+ [2]...[7] - D/A output range for channel 1-6:
+ 0: 0-5V, 1: 0-10V, 2: +/-5V, 3: +/-10V,
+ 4: 4-20mA
+*/
+
+/*
+ Thanks to Circuit Specialists for having programming info (!) on
+ their web page. (http://www.cir.com/)
+*/
+
+#include "../comedidev.h"
+
+#include <linux/ioport.h>
+
+#undef ACL6126_IRQ /* no interrupt support (yet) */
+
+#define PCL726_SIZE 16
+#define PCL727_SIZE 32
+#define PCL728_SIZE 8
+
+#define PCL726_DAC0_HI 0
+#define PCL726_DAC0_LO 1
+
+#define PCL726_DO_HI 12
+#define PCL726_DO_LO 13
+#define PCL726_DI_HI 14
+#define PCL726_DI_LO 15
+
+#define PCL727_DO_HI 24
+#define PCL727_DO_LO 25
+#define PCL727_DI_HI 0
+#define PCL727_DI_LO 1
+
+static const struct comedi_lrange range_4_20mA = { 1, {RANGE_mA(4, 20)} };
+static const struct comedi_lrange range_0_20mA = { 1, {RANGE_mA(0, 20)} };
+
+static const struct comedi_lrange *const rangelist_726[] = {
+ &range_unipolar5, &range_unipolar10,
+ &range_bipolar5, &range_bipolar10,
+ &range_4_20mA, &range_unknown
+};
+
+static const struct comedi_lrange *const rangelist_727[] = {
+ &range_unipolar5, &range_unipolar10,
+ &range_bipolar5,
+ &range_4_20mA
+};
+
+static const struct comedi_lrange *const rangelist_728[] = {
+ &range_unipolar5, &range_unipolar10,
+ &range_bipolar5, &range_bipolar10,
+ &range_4_20mA, &range_0_20mA
+};
+
+static int pcl726_attach(struct comedi_device * dev, struct comedi_devconfig * it);
+static int pcl726_detach(struct comedi_device * dev);
+
+struct pcl726_board {
+
+ const char *name; // driver name
+ int n_aochan; // num of D/A chans
+ int num_of_ranges; // num of ranges
+ unsigned int IRQbits; // allowed interrupts
+ unsigned int io_range; // len of IO space
+ char have_dio; // 1=card have DI/DO ports
+ int di_hi; // ports for DI/DO operations
+ int di_lo;
+ int do_hi;
+ int do_lo;
+ const struct comedi_lrange *const *range_type_list; // list of supported ranges
+};
+
+
+static const struct pcl726_board boardtypes[] = {
+ {"pcl726", 6, 6, 0x0000, PCL726_SIZE, 1,
+ PCL726_DI_HI, PCL726_DI_LO, PCL726_DO_HI, PCL726_DO_LO,
+ &rangelist_726[0],},
+ {"pcl727", 12, 4, 0x0000, PCL727_SIZE, 1,
+ PCL727_DI_HI, PCL727_DI_LO, PCL727_DO_HI, PCL727_DO_LO,
+ &rangelist_727[0],},
+ {"pcl728", 2, 6, 0x0000, PCL728_SIZE, 0,
+ 0, 0, 0, 0,
+ &rangelist_728[0],},
+ {"acl6126", 6, 5, 0x96e8, PCL726_SIZE, 1,
+ PCL726_DI_HI, PCL726_DI_LO, PCL726_DO_HI, PCL726_DO_LO,
+ &rangelist_726[0],},
+ {"acl6128", 2, 6, 0x0000, PCL728_SIZE, 0,
+ 0, 0, 0, 0,
+ &rangelist_728[0],},
+};
+
+#define n_boardtypes (sizeof(boardtypes)/sizeof(struct pcl726_board))
+#define this_board ((const struct pcl726_board *)dev->board_ptr)
+
+static struct comedi_driver driver_pcl726 = {
+ driver_name:"pcl726",
+ module:THIS_MODULE,
+ attach:pcl726_attach,
+ detach:pcl726_detach,
+ board_name:&boardtypes[0].name,
+ num_names:n_boardtypes,
+ offset:sizeof(struct pcl726_board),
+};
+
+COMEDI_INITCLEANUP(driver_pcl726);
+
+struct pcl726_private {
+
+ int bipolar[12];
+ const struct comedi_lrange *rangelist[12];
+ unsigned int ao_readback[12];
+};
+
+#define devpriv ((struct pcl726_private *)dev->private)
+
+static int pcl726_ao_insn(struct comedi_device * dev, struct comedi_subdevice * s,
+ struct comedi_insn * insn, unsigned int * data)
+{
+ int hi, lo;
+ int n;
+ int chan = CR_CHAN(insn->chanspec);
+
+ for (n = 0; n < insn->n; n++) {
+ lo = data[n] & 0xff;
+ hi = (data[n] >> 8) & 0xf;
+ if (devpriv->bipolar[chan])
+ hi ^= 0x8;
+ /*
+ * the programming info did not say which order
+ * to write bytes. switch the order of the next
+ * two lines if you get glitches.
+ */
+ outb(hi, dev->iobase + PCL726_DAC0_HI + 2 * chan);
+ outb(lo, dev->iobase + PCL726_DAC0_LO + 2 * chan);
+ devpriv->ao_readback[chan] = data[n];
+ }
+
+ return n;
+}
+
+static int pcl726_ao_insn_read(struct comedi_device * dev, struct comedi_subdevice * s,
+ struct comedi_insn * insn, unsigned int * data)
+{
+ int chan = CR_CHAN(insn->chanspec);
+ int n;
+
+ for (n = 0; n < insn->n; n++) {
+ data[n] = devpriv->ao_readback[chan];
+ }
+ return n;
+}
+
+static int pcl726_di_insn_bits(struct comedi_device * dev, struct comedi_subdevice * s,
+ struct comedi_insn * insn, unsigned int * data)
+{
+ if (insn->n != 2)
+ return -EINVAL;
+
+ data[1] = inb(dev->iobase + this_board->di_lo) |
+ (inb(dev->iobase + this_board->di_hi) << 8);
+
+ return 2;
+}
+
+static int pcl726_do_insn_bits(struct comedi_device * dev, struct comedi_subdevice * s,
+ struct comedi_insn * insn, unsigned int * data)
+{
+ if (insn->n != 2)
+ return -EINVAL;
+
+ if (data[0]) {
+ s->state &= ~data[0];
+ s->state |= data[0] & data[1];
+ }
+ if (data[1] & 0x00ff)
+ outb(s->state & 0xff, dev->iobase + this_board->do_lo);
+ if (data[1] & 0xff00)
+ outb((s->state >> 8), dev->iobase + this_board->do_hi);
+
+ data[1] = s->state;
+
+ return 2;
+}
+
+static int pcl726_attach(struct comedi_device * dev, struct comedi_devconfig * it)
+{
+ struct comedi_subdevice *s;
+ unsigned long iobase;
+ unsigned int iorange;
+ int ret, i;
+#ifdef ACL6126_IRQ
+ unsigned int irq;
+#endif
+
+ iobase = it->options[0];
+ iorange = this_board->io_range;
+ printk("comedi%d: pcl726: board=%s, 0x%03lx ", dev->minor,
+ this_board->name, iobase);
+ if (!request_region(iobase, iorange, "pcl726")) {
+ printk("I/O port conflict\n");
+ return -EIO;
+ }
+
+ dev->iobase = iobase;
+
+ dev->board_name = this_board->name;
+
+ if ((ret = alloc_private(dev, sizeof(struct pcl726_private))) < 0)
+ return -ENOMEM;
+
+ for (i = 0; i < 12; i++) {
+ devpriv->bipolar[i] = 0;
+ devpriv->rangelist[i] = &range_unknown;
+ }
+
+#ifdef ACL6126_IRQ
+ irq = 0;
+ if (boardtypes[board].IRQbits != 0) { /* board support IRQ */
+ irq = it->options[1];
+ devpriv->first_chan = 2;
+ if (irq) { /* we want to use IRQ */
+ if (((1 << irq) & boardtypes[board].IRQbits) == 0) {
+ rt_printk
+ (", IRQ %d is out of allowed range, DISABLING IT",
+ irq);
+ irq = 0; /* Bad IRQ */
+ } else {
+ if (comedi_request_irq(irq, interrupt_pcl818, 0,
+ "pcl726", dev)) {
+ rt_printk
+ (", unable to allocate IRQ %d, DISABLING IT",
+ irq);
+ irq = 0; /* Can't use IRQ */
+ } else {
+ rt_printk(", irq=%d", irq);
+ }
+ }
+ }
+ }
+
+ dev->irq = irq;
+#endif
+
+ printk("\n");
+
+ if ((ret = alloc_subdevices(dev, 3)) < 0)
+ return ret;
+
+ s = dev->subdevices + 0;
+ /* ao */
+ s->type = COMEDI_SUBD_AO;
+ s->subdev_flags = SDF_WRITABLE | SDF_GROUND;
+ s->n_chan = this_board->n_aochan;
+ s->maxdata = 0xfff;
+ s->len_chanlist = 1;
+ s->insn_write = pcl726_ao_insn;
+ s->insn_read = pcl726_ao_insn_read;
+ s->range_table_list = devpriv->rangelist;
+ for (i = 0; i < this_board->n_aochan; i++) {
+ int j;
+
+ j = it->options[2 + 1];
+ if ((j < 0) || (j >= this_board->num_of_ranges)) {
+ printk("Invalid range for channel %d! Must be 0<=%d<%d\n", i, j, this_board->num_of_ranges - 1);
+ j = 0;
+ }
+ devpriv->rangelist[i] = this_board->range_type_list[j];
+ if (devpriv->rangelist[i]->range[0].min ==
+ -devpriv->rangelist[i]->range[0].max)
+ devpriv->bipolar[i] = 1; /* bipolar range */
+ }
+
+ s = dev->subdevices + 1;
+ /* di */
+ if (!this_board->have_dio) {
+ s->type = COMEDI_SUBD_UNUSED;
+ } else {
+ s->type = COMEDI_SUBD_DI;
+ s->subdev_flags = SDF_READABLE | SDF_GROUND;
+ s->n_chan = 16;
+ s->maxdata = 1;
+ s->len_chanlist = 1;
+ s->insn_bits = pcl726_di_insn_bits;
+ s->range_table = &range_digital;
+ }
+
+ s = dev->subdevices + 2;
+ /* do */
+ if (!this_board->have_dio) {
+ s->type = COMEDI_SUBD_UNUSED;
+ } else {
+ s->type = COMEDI_SUBD_DO;
+ s->subdev_flags = SDF_WRITABLE | SDF_GROUND;
+ s->n_chan = 16;
+ s->maxdata = 1;
+ s->len_chanlist = 1;
+ s->insn_bits = pcl726_do_insn_bits;
+ s->range_table = &range_digital;
+ }
+
+ return 0;
+}
+
+static int pcl726_detach(struct comedi_device * dev)
+{
+// printk("comedi%d: pcl726: remove\n",dev->minor);
+
+#ifdef ACL6126_IRQ
+ if (dev->irq) {
+ comedi_free_irq(dev->irq, dev);
+ }
+#endif
+
+ if (dev->iobase)
+ release_region(dev->iobase, this_board->io_range);
+
+ return 0;
+}
projects / linux-2.6-omap-h63xx.git / blobdiff