--- /dev/null
+/***************************************************************************
+ * *
+ * comedi/drivers/unioxx5.c *
+ * Driver for Fastwel UNIOxx-5 (analog and digital i/o) boards. *
+ * *
+ * Copyright (C) 2006 Kruchinin Daniil (asgard) [asgard@etersoft.ru] *
+ * *
+ * COMEDI - Linux Control and Measurement Device Interface *
+ * Copyright (C) 1998,2000 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. *
+ * *
+ ***************************************************************************/
+/*
+
+Driver: unioxx5
+Description: Driver for Fastwel UNIOxx-5 (analog and digital i/o) boards.
+Author: Kruchinin Daniil (asgard) <asgard@etersoft.ru>
+Status: unknown
+Updated: 2006-10-09
+Devices: [Fastwel] UNIOxx-5 (unioxx5),
+
+ This card supports digital and analog I/O. It written for g01
+ subdevices only.
+ channels range: 0 .. 23 dio channels
+ and 0 .. 11 analog modules range
+ During attaching unioxx5 module displays modules identifiers
+ (see dmesg after comedi_config) in format:
+ | [module_number] module_id |
+
+*/
+
+#include <linux/module.h>
+#include <linux/delay.h>
+#include "../comedidev.h"
+
+#define UNIOXX5_SIZE 0x10
+#define UNIOXX5_SUBDEV_BASE 0xA000 /* base addr of first subdev */
+#define UNIOXX5_SUBDEV_ODDS 0x400
+
+/* modules types */
+#define MODULE_DIGITAL 0
+#define MODULE_OUTPUT_MASK 0x80 /* analog input/output */
+
+/* constants for digital i/o */
+#define UNIOXX5_NUM_OF_CHANS 24
+
+/* constants for analog i/o */
+#define TxBE 0x10 /* transmit buffer enable */
+#define RxCA 0x20 /* 1 receive character available */
+#define Rx2CA 0x40 /* 2 receive character available */
+#define Rx4CA 0x80 /* 4 receive character available */
+
+/* bytes mask errors */
+#define Rx2CA_ERR_MASK 0x04 /* 2 bytes receiving error */
+#define Rx4CA_ERR_MASK 0x08 /* 4 bytes receiving error */
+
+/* channel modes */
+#define ALL_2_INPUT 0 /* config all digital channels to input */
+#define ALL_2_OUTPUT 1 /* config all digital channels to output */
+
+/* 'private' structure for each subdevice */
+struct unioxx5_subd_priv {
+ int usp_iobase;
+ /* 12 modules. each can be 70L or 73L */
+ unsigned char usp_module_type[12];
+ /* for saving previous written value for analog modules */
+ unsigned char usp_extra_data[12][4];
+ unsigned char usp_prev_wr_val[3]; /* previous written value */
+ unsigned char usp_prev_cn_val[3]; /* previous channel value */
+};
+
+static int __unioxx5_define_chan_offset(int chan_num)
+{
+ if (chan_num < 0 || chan_num > 23)
+ return -1;
+
+ return (chan_num >> 3) + 1;
+}
+
+#if 0 /* not used? */
+static void __unioxx5_digital_config(struct comedi_subdevice *s, int mode)
+{
+ struct unioxx5_subd_priv *usp = s->private;
+ struct device *csdev = s->device->class_dev;
+ int i, mask;
+
+ mask = (mode == ALL_2_OUTPUT) ? 0xFF : 0x00;
+ dev_dbg(csdev, "mode = %d\n", mask);
+
+ outb(1, usp->usp_iobase + 0);
+
+ for (i = 0; i < 3; i++)
+ outb(mask, usp->usp_iobase + i);
+
+ outb(0, usp->usp_iobase + 0);
+}
+#endif
+
+/* configure channels for analog i/o (even to output, odd to input) */
+static void __unioxx5_analog_config(struct unioxx5_subd_priv *usp, int channel)
+{
+ int chan_a, chan_b, conf, channel_offset;
+
+ channel_offset = __unioxx5_define_chan_offset(channel);
+ conf = usp->usp_prev_cn_val[channel_offset - 1];
+ chan_a = chan_b = 1;
+
+ /* setting channel A and channel B mask */
+ if (channel % 2 == 0) {
+ chan_a <<= channel & 0x07;
+ chan_b <<= (channel + 1) & 0x07;
+ } else {
+ chan_a <<= (channel - 1) & 0x07;
+ chan_b <<= channel & 0x07;
+ }
+
+ conf |= chan_a; /* even channel ot output */
+ conf &= ~chan_b; /* odd channel to input */
+
+ outb(1, usp->usp_iobase + 0);
+ outb(conf, usp->usp_iobase + channel_offset);
+ outb(0, usp->usp_iobase + 0);
+
+ usp->usp_prev_cn_val[channel_offset - 1] = conf;
+}
+
+static int __unioxx5_digital_read(struct comedi_subdevice *s,
+ unsigned int *data, int channel, int minor)
+{
+ struct unioxx5_subd_priv *usp = s->private;
+ struct device *csdev = s->device->class_dev;
+ int channel_offset, mask = 1 << (channel & 0x07);
+
+ channel_offset = __unioxx5_define_chan_offset(channel);
+ if (channel_offset < 0) {
+ dev_err(csdev,
+ "undefined channel %d. channel range is 0 .. 23\n",
+ channel);
+ return 0;
+ }
+
+ *data = inb(usp->usp_iobase + channel_offset);
+ *data &= mask;
+
+ /* correct the read value to 0 or 1 */
+ if (channel_offset > 1)
+ channel -= 2 << channel_offset;
+ *data >>= channel;
+ return 1;
+}
+
+static int __unioxx5_analog_read(struct comedi_subdevice *s,
+ unsigned int *data, int channel, int minor)
+{
+ struct unioxx5_subd_priv *usp = s->private;
+ struct device *csdev = s->device->class_dev;
+ int module_no, read_ch;
+ char control;
+
+ module_no = channel / 2;
+ read_ch = channel % 2; /* depend on type of channel (A or B) */
+
+ /* defining if given module can work on input */
+ if (usp->usp_module_type[module_no] & MODULE_OUTPUT_MASK) {
+ dev_err(csdev,
+ "module in position %d with id 0x%02x is for output only",
+ module_no, usp->usp_module_type[module_no]);
+ return 0;
+ }
+
+ __unioxx5_analog_config(usp, channel);
+ /* sends module number to card(1 .. 12) */
+ outb(module_no + 1, usp->usp_iobase + 5);
+ outb('V', usp->usp_iobase + 6); /* sends to module (V)erify command */
+ control = inb(usp->usp_iobase); /* get control register byte */
+
+ /* waits while reading four bytes will be allowed */
+ while (!((control = inb(usp->usp_iobase + 0)) & Rx4CA))
+ ;
+
+ /* if four bytes readding error occurs - return 0(false) */
+ if ((control & Rx4CA_ERR_MASK)) {
+ dev_err(csdev, "4 bytes error\n");
+ return 0;
+ }
+
+ if (read_ch)
+ *data = inw(usp->usp_iobase + 6); /* channel B */
+ else
+ *data = inw(usp->usp_iobase + 4); /* channel A */
+
+ return 1;
+}
+
+static int __unioxx5_digital_write(struct comedi_subdevice *s,
+ unsigned int *data, int channel, int minor)
+{
+ struct unioxx5_subd_priv *usp = s->private;
+ struct device *csdev = s->device->class_dev;
+ int channel_offset, val;
+ int mask = 1 << (channel & 0x07);
+
+ channel_offset = __unioxx5_define_chan_offset(channel);
+ if (channel_offset < 0) {
+ dev_err(csdev,
+ "undefined channel %d. channel range is 0 .. 23\n",
+ channel);
+ return 0;
+ }
+
+ /* getting previous written value */
+ val = usp->usp_prev_wr_val[channel_offset - 1];
+
+ if (*data)
+ val |= mask;
+ else
+ val &= ~mask;
+
+ outb(val, usp->usp_iobase + channel_offset);
+ /* saving new written value */
+ usp->usp_prev_wr_val[channel_offset - 1] = val;
+
+ return 1;
+}
+
+static int __unioxx5_analog_write(struct comedi_subdevice *s,
+ unsigned int *data, int channel, int minor)
+{
+ struct unioxx5_subd_priv *usp = s->private;
+ struct device *csdev = s->device->class_dev;
+ int module, i;
+
+ module = channel / 2; /* definig module number(0 .. 11) */
+ i = (channel % 2) << 1; /* depends on type of channel (A or B) */
+
+ /* defining if given module can work on output */
+ if (!(usp->usp_module_type[module] & MODULE_OUTPUT_MASK)) {
+ dev_err(csdev,
+ "module in position %d with id 0x%0x is for input only!\n",
+ module, usp->usp_module_type[module]);
+ return 0;
+ }
+
+ __unioxx5_analog_config(usp, channel);
+ /* saving minor byte */
+ usp->usp_extra_data[module][i++] = (unsigned char)(*data & 0x00FF);
+ /* saving major byte */
+ usp->usp_extra_data[module][i] = (unsigned char)((*data & 0xFF00) >> 8);
+
+ /* while(!((inb(usp->usp_iobase + 0)) & TxBE)); */
+ /* sending module number to card(1 .. 12) */
+ outb(module + 1, usp->usp_iobase + 5);
+ outb('W', usp->usp_iobase + 6); /* sends (W)rite command to module */
+
+ /* sending for bytes to module(one byte per cycle iteration) */
+ for (i = 0; i < 4; i++) {
+ while (!((inb(usp->usp_iobase + 0)) & TxBE))
+ ; /* waits while writing will be allowed */
+ outb(usp->usp_extra_data[module][i], usp->usp_iobase + 6);
+ }
+
+ return 1;
+}
+
+static int unioxx5_subdev_read(struct comedi_device *dev,
+ struct comedi_subdevice *subdev,
+ struct comedi_insn *insn, unsigned int *data)
+{
+ struct unioxx5_subd_priv *usp = subdev->private;
+ int channel, type;
+
+ channel = CR_CHAN(insn->chanspec);
+ /* defining module type(analog or digital) */
+ type = usp->usp_module_type[channel / 2];
+
+ if (type == MODULE_DIGITAL) {
+ if (!__unioxx5_digital_read(subdev, data, channel, dev->minor))
+ return -1;
+ } else {
+ if (!__unioxx5_analog_read(subdev, data, channel, dev->minor))
+ return -1;
+ }
+
+ return 1;
+}
+
+static int unioxx5_subdev_write(struct comedi_device *dev,
+ struct comedi_subdevice *subdev,
+ struct comedi_insn *insn, unsigned int *data)
+{
+ struct unioxx5_subd_priv *usp = subdev->private;
+ int channel, type;
+
+ channel = CR_CHAN(insn->chanspec);
+ /* defining module type(analog or digital) */
+ type = usp->usp_module_type[channel / 2];
+
+ if (type == MODULE_DIGITAL) {
+ if (!__unioxx5_digital_write(subdev, data, channel, dev->minor))
+ return -1;
+ } else {
+ if (!__unioxx5_analog_write(subdev, data, channel, dev->minor))
+ return -1;
+ }
+
+ return 1;
+}
+
+/* for digital modules only */
+static int unioxx5_insn_config(struct comedi_device *dev,
+ struct comedi_subdevice *subdev,
+ struct comedi_insn *insn, unsigned int *data)
+{
+ int channel_offset, flags, channel = CR_CHAN(insn->chanspec), type;
+ struct unioxx5_subd_priv *usp = subdev->private;
+ int mask = 1 << (channel & 0x07);
+
+ type = usp->usp_module_type[channel / 2];
+
+ if (type != MODULE_DIGITAL) {
+ dev_err(dev->class_dev,
+ "channel configuration accessible only for digital modules\n");
+ return -1;
+ }
+
+ channel_offset = __unioxx5_define_chan_offset(channel);
+ if (channel_offset < 0) {
+ dev_err(dev->class_dev,
+ "undefined channel %d. channel range is 0 .. 23\n",
+ channel);
+ return -1;
+ }
+
+ /* gets previously written value */
+ flags = usp->usp_prev_cn_val[channel_offset - 1];
+
+ switch (*data) {
+ case COMEDI_INPUT:
+ flags &= ~mask;
+ break;
+ case COMEDI_OUTPUT:
+ flags |= mask;
+ break;
+ default:
+ dev_err(dev->class_dev, "unknown flag\n");
+ return -1;
+ }
+
+ /* *\
+ * sets channels buffer to 1(after this we are allowed to *
+ * change channel type on input or output) *
+ \* */
+ outb(1, usp->usp_iobase + 0);
+ /* changes type of _one_ channel */
+ outb(flags, usp->usp_iobase + channel_offset);
+ /* sets channels bank to 0(allows directly input/output) */
+ outb(0, usp->usp_iobase + 0);
+ /* saves written value */
+ usp->usp_prev_cn_val[channel_offset - 1] = flags;
+
+ return 0;
+}
+
+/* initializing subdevice with given address */
+static int __unioxx5_subdev_init(struct comedi_device *dev,
+ struct comedi_subdevice *s,
+ int iobase)
+{
+ struct unioxx5_subd_priv *usp;
+ int i, to, ndef_flag = 0;
+ int ret;
+
+ usp = comedi_alloc_spriv(s, sizeof(*usp));
+ if (!usp)
+ return -ENOMEM;
+
+ ret = __comedi_request_region(dev, iobase, UNIOXX5_SIZE);
+ if (ret)
+ return ret;
+ usp->usp_iobase = iobase;
+
+ /* defining modules types */
+ for (i = 0; i < 12; i++) {
+ to = 10000;
+
+ __unioxx5_analog_config(usp, i * 2);
+ /* sends channel number to card */
+ outb(i + 1, iobase + 5);
+ outb('H', iobase + 6); /* requests EEPROM world */
+ while (!(inb(iobase + 0) & TxBE))
+ ; /* waits while writing will be allowed */
+ outb(0, iobase + 6);
+
+ /* waits while reading of two bytes will be allowed */
+ while (!(inb(iobase + 0) & Rx2CA)) {
+ if (--to <= 0) {
+ ndef_flag = 1;
+ break;
+ }
+ }
+
+ if (ndef_flag) {
+ usp->usp_module_type[i] = 0;
+ ndef_flag = 0;
+ } else {
+ usp->usp_module_type[i] = inb(iobase + 6);
+ }
+
+ udelay(1);
+ }
+
+ /* initial subdevice for digital or analog i/o */
+ s->type = COMEDI_SUBD_DIO;
+ s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
+ s->n_chan = UNIOXX5_NUM_OF_CHANS;
+ s->maxdata = 0xFFF;
+ s->range_table = &range_digital;
+ s->insn_read = unioxx5_subdev_read;
+ s->insn_write = unioxx5_subdev_write;
+ /* for digital modules only!!! */
+ s->insn_config = unioxx5_insn_config;
+
+ return 0;
+}
+
+static int unioxx5_attach(struct comedi_device *dev,
+ struct comedi_devconfig *it)
+{
+ struct comedi_subdevice *s;
+ int iobase, i, n_subd;
+ int id, num, ba;
+ int ret;
+
+ iobase = it->options[0];
+
+ dev->iobase = iobase;
+ iobase += UNIOXX5_SUBDEV_BASE;
+ n_subd = 0;
+
+ /* getting number of subdevices with types 'g01' */
+ for (i = 0, ba = iobase; i < 4; i++, ba += UNIOXX5_SUBDEV_ODDS) {
+ id = inb(ba + 0xE);
+ num = inb(ba + 0xF);
+
+ if (id != 'g' || num != 1)
+ continue;
+
+ n_subd++;
+ }
+
+ /* unioxx5 can has from two to four subdevices */
+ if (n_subd < 2) {
+ dev_err(dev->class_dev,
+ "your card must has at least 2 'g01' subdevices\n");
+ return -1;
+ }
+
+ ret = comedi_alloc_subdevices(dev, n_subd);
+ if (ret)
+ return ret;
+
+ /* initializing each of for same subdevices */
+ for (i = 0; i < n_subd; i++, iobase += UNIOXX5_SUBDEV_ODDS) {
+ s = &dev->subdevices[i];
+ ret = __unioxx5_subdev_init(dev, s, iobase);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+static void unioxx5_detach(struct comedi_device *dev)
+{
+ struct comedi_subdevice *s;
+ struct unioxx5_subd_priv *spriv;
+ int i;
+
+ for (i = 0; i < dev->n_subdevices; i++) {
+ s = &dev->subdevices[i];
+ spriv = s->private;
+ if (spriv && spriv->usp_iobase)
+ release_region(spriv->usp_iobase, UNIOXX5_SIZE);
+ }
+}
+
+static struct comedi_driver unioxx5_driver = {
+ .driver_name = "unioxx5",
+ .module = THIS_MODULE,
+ .attach = unioxx5_attach,
+ .detach = unioxx5_detach,
+};
+module_comedi_driver(unioxx5_driver);
+
+MODULE_AUTHOR("Comedi http://www.comedi.org");
+MODULE_DESCRIPTION("Comedi low-level driver");
+MODULE_LICENSE("GPL");
Code Review / kvmfornfv.git / blobdiff