--- /dev/null
+/*
+ comedi/drivers/das16cs.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.
+
+*/
+/*
+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 <linux/delay.h>
+
+#include "../comedi_pcmcia.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
+
+struct das16cs_board {
+ const char *name;
+ int device_id;
+ int n_ao_chans;
+};
+
+static const struct das16cs_board das16cs_boards[] = {
+ {
+ .name = "PC-CARD DAS16/16-AO",
+ .device_id = 0x0039,
+ .n_ao_chans = 2,
+ }, {
+ .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;
+};
+
+static const struct comedi_lrange das16cs_ai_range = {
+ 4, {
+ BIP_RANGE(10),
+ BIP_RANGE(5),
+ BIP_RANGE(2.5),
+ BIP_RANGE(1.25),
+ }
+};
+
+static int das16cs_ai_eoc(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned long context)
+{
+ unsigned int status;
+
+ status = inw(dev->iobase + DAS16CS_MISC1);
+ if (status & 0x0080)
+ return 0;
+ return -EBUSY;
+}
+
+static int das16cs_ai_rinsn(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 range = CR_RANGE(insn->chanspec);
+ int aref = CR_AREF(insn->chanspec);
+ int ret;
+ int i;
+
+ outw(chan, dev->iobase + DAS16CS_DIO_MUX);
+
+ devpriv->status1 &= ~0xf320;
+ devpriv->status1 |= (aref == AREF_DIFF) ? 0 : 0x0020;
+ outw(devpriv->status1, dev->iobase + DAS16CS_MISC1);
+
+ devpriv->status2 &= ~0xff00;
+ switch (range) {
+ case 0:
+ devpriv->status2 |= 0x800;
+ break;
+ case 1:
+ devpriv->status2 |= 0x000;
+ break;
+ case 2:
+ devpriv->status2 |= 0x100;
+ break;
+ case 3:
+ devpriv->status2 |= 0x200;
+ break;
+ }
+ outw(devpriv->status2, dev->iobase + DAS16CS_MISC2);
+
+ for (i = 0; i < insn->n; i++) {
+ outw(0, dev->iobase + DAS16CS_ADC_DATA);
+
+ ret = comedi_timeout(dev, s, insn, das16cs_ai_eoc, 0);
+ if (ret)
+ return ret;
+
+ data[i] = inw(dev->iobase + DAS16CS_ADC_DATA);
+ }
+
+ return i;
+}
+
+static int das16cs_ao_insn_write(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned int *data)
+{
+ struct das16cs_private *devpriv = dev->private;
+ unsigned int chan = CR_CHAN(insn->chanspec);
+ unsigned int val = s->readback[chan];
+ unsigned short status1;
+ int bit;
+ int i;
+
+ for (i = 0; i < insn->n; i++) {
+ val = data[i];
+
+ outw(devpriv->status1, dev->iobase + DAS16CS_MISC1);
+ udelay(1);
+
+ status1 = devpriv->status1 & ~0xf;
+ if (chan)
+ status1 |= 0x0001;
+ else
+ status1 |= 0x0008;
+
+ outw(status1, dev->iobase + DAS16CS_MISC1);
+ udelay(1);
+
+ for (bit = 15; bit >= 0; bit--) {
+ int b = (val >> bit) & 0x1;
+
+ b <<= 1;
+ outw(status1 | b | 0x0000, dev->iobase + DAS16CS_MISC1);
+ udelay(1);
+ outw(status1 | b | 0x0004, dev->iobase + DAS16CS_MISC1);
+ 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);
+ }
+ s->readback[chan] = val;
+
+ return insn->n;
+}
+
+static int das16cs_dio_insn_bits(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned int *data)
+{
+ if (comedi_dio_update_state(s, data))
+ outw(s->state, dev->iobase + DAS16CS_DIO);
+
+ data[1] = inw(dev->iobase + DAS16CS_DIO);
+
+ return insn->n;
+}
+
+static int das16cs_dio_insn_config(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ struct comedi_insn *insn,
+ unsigned int *data)
+{
+ struct das16cs_private *devpriv = dev->private;
+ unsigned int chan = CR_CHAN(insn->chanspec);
+ unsigned int mask;
+ int ret;
+
+ if (chan < 4)
+ mask = 0x0f;
+ else
+ mask = 0xf0;
+
+ ret = comedi_dio_insn_config(dev, s, insn, data, mask);
+ if (ret)
+ return ret;
+
+ devpriv->status2 &= ~0x00c0;
+ devpriv->status2 |= (s->io_bits & 0xf0) ? 0x0080 : 0;
+ devpriv->status2 |= (s->io_bits & 0x0f) ? 0x0040 : 0;
+
+ outw(devpriv->status2, dev->iobase + DAS16CS_MISC2);
+
+ return insn->n;
+}
+
+static const void *das16cs_find_boardinfo(struct comedi_device *dev,
+ struct pcmcia_device *link)
+{
+ const struct das16cs_board *board;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(das16cs_boards); i++) {
+ board = &das16cs_boards[i];
+ if (board->device_id == link->card_id)
+ return board;
+ }
+
+ return NULL;
+}
+
+static int das16cs_auto_attach(struct comedi_device *dev,
+ unsigned long context)
+{
+ struct pcmcia_device *link = comedi_to_pcmcia_dev(dev);
+ const struct das16cs_board *board;
+ struct das16cs_private *devpriv;
+ struct comedi_subdevice *s;
+ int ret;
+
+ board = das16cs_find_boardinfo(dev, link);
+ if (!board)
+ return -ENODEV;
+ dev->board_ptr = board;
+ dev->board_name = board->name;
+
+ link->config_flags |= CONF_AUTO_SET_IO | CONF_ENABLE_IRQ;
+ ret = comedi_pcmcia_enable(dev, NULL);
+ if (ret)
+ return ret;
+ dev->iobase = link->resource[0]->start;
+
+ link->priv = dev;
+
+ devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
+ if (!devpriv)
+ return -ENOMEM;
+
+ dev->pacer = comedi_8254_init(dev->iobase + DAS16CS_TIMER_BASE,
+ I8254_OSC_BASE_10MHZ, I8254_IO16, 0);
+ if (!dev->pacer)
+ return -ENOMEM;
+
+ ret = comedi_alloc_subdevices(dev, 3);
+ if (ret)
+ return ret;
+
+ 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->n_chan = 16;
+ s->maxdata = 0xffff;
+ s->range_table = &das16cs_ai_range;
+ s->len_chanlist = 16;
+ s->insn_read = das16cs_ai_rinsn;
+
+ s = &dev->subdevices[1];
+ /* analog output subdevice */
+ if (board->n_ao_chans) {
+ s->type = COMEDI_SUBD_AO;
+ s->subdev_flags = SDF_WRITABLE;
+ s->n_chan = board->n_ao_chans;
+ s->maxdata = 0xffff;
+ s->range_table = &range_bipolar10;
+ s->insn_write = &das16cs_ao_insn_write;
+
+ ret = comedi_alloc_subdev_readback(s);
+ if (ret)
+ return ret;
+ } else {
+ s->type = COMEDI_SUBD_UNUSED;
+ }
+
+ 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->maxdata = 1;
+ s->range_table = &range_digital;
+ s->insn_bits = das16cs_dio_insn_bits;
+ s->insn_config = das16cs_dio_insn_config;
+
+ return 0;
+}
+
+static struct comedi_driver driver_das16cs = {
+ .driver_name = "cb_das16_cs",
+ .module = THIS_MODULE,
+ .auto_attach = das16cs_auto_attach,
+ .detach = comedi_pcmcia_disable,
+};
+
+static int das16cs_pcmcia_attach(struct pcmcia_device *link)
+{
+ return comedi_pcmcia_auto_config(link, &driver_das16cs);
+}
+
+static const struct pcmcia_device_id das16cs_id_table[] = {
+ PCMCIA_DEVICE_MANF_CARD(0x01c5, 0x0039),
+ PCMCIA_DEVICE_MANF_CARD(0x01c5, 0x4009),
+ PCMCIA_DEVICE_NULL
+};
+MODULE_DEVICE_TABLE(pcmcia, das16cs_id_table);
+
+static struct pcmcia_driver das16cs_driver = {
+ .name = "cb_das16_cs",
+ .owner = THIS_MODULE,
+ .id_table = das16cs_id_table,
+ .probe = das16cs_pcmcia_attach,
+ .remove = comedi_pcmcia_auto_unconfig,
+};
+module_comedi_pcmcia_driver(driver_das16cs, das16cs_driver);
+
+MODULE_AUTHOR("David A. Schleef <ds@schleef.org>");
+MODULE_DESCRIPTION("Comedi driver for Computer Boards PC-CARD DAS16/16");
+MODULE_LICENSE("GPL");
Code Review / kvmfornfv.git / blobdiff