diff options
Diffstat (limited to 'drivers/staging/comedi/drivers/unioxx5.c')
-rw-r--r-- | drivers/staging/comedi/drivers/unioxx5.c | 506 |
1 files changed, 0 insertions, 506 deletions
diff --git a/drivers/staging/comedi/drivers/unioxx5.c b/drivers/staging/comedi/drivers/unioxx5.c deleted file mode 100644 index 51498b889..000000000 --- a/drivers/staging/comedi/drivers/unioxx5.c +++ /dev/null @@ -1,506 +0,0 @@ -/*************************************************************************** - * * - * 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"); |