forked from Qortal/Brooklyn
457 lines
12 KiB
C
457 lines
12 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* cb_das16_cs.c
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* Driver for Computer Boards PC-CARD DAS16/16.
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*
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* COMEDI - Linux Control and Measurement Device Interface
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* Copyright (C) 2000, 2001, 2002 David A. Schleef <ds@schleef.org>
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*
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* PCMCIA support code for this driver is adapted from the dummy_cs.c
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* driver of the Linux PCMCIA Card Services package.
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*
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* The initial developer of the original code is David A. Hinds
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* <dahinds@users.sourceforge.net>. Portions created by David A. Hinds
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* are Copyright (C) 1999 David A. Hinds. All Rights Reserved.
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*/
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/*
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* Driver: cb_das16_cs
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* Description: Computer Boards PC-CARD DAS16/16
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* Devices: [ComputerBoards] PC-CARD DAS16/16 (cb_das16_cs),
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* PC-CARD DAS16/16-AO
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* Author: ds
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* Updated: Mon, 04 Nov 2002 20:04:21 -0800
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* Status: experimental
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*/
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#include <linux/module.h>
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#include <linux/interrupt.h>
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#include <linux/delay.h>
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#include "../comedi_pcmcia.h"
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#include "comedi_8254.h"
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/*
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* Register I/O map
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*/
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#define DAS16CS_AI_DATA_REG 0x00
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#define DAS16CS_AI_MUX_REG 0x02
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#define DAS16CS_AI_MUX_HI_CHAN(x) (((x) & 0xf) << 4)
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#define DAS16CS_AI_MUX_LO_CHAN(x) (((x) & 0xf) << 0)
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#define DAS16CS_AI_MUX_SINGLE_CHAN(x) (DAS16CS_AI_MUX_HI_CHAN(x) | \
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DAS16CS_AI_MUX_LO_CHAN(x))
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#define DAS16CS_MISC1_REG 0x04
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#define DAS16CS_MISC1_INTE BIT(15) /* 1=enable; 0=disable */
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#define DAS16CS_MISC1_INT_SRC(x) (((x) & 0x7) << 12) /* interrupt src */
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#define DAS16CS_MISC1_INT_SRC_NONE DAS16CS_MISC1_INT_SRC(0)
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#define DAS16CS_MISC1_INT_SRC_PACER DAS16CS_MISC1_INT_SRC(1)
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#define DAS16CS_MISC1_INT_SRC_EXT DAS16CS_MISC1_INT_SRC(2)
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#define DAS16CS_MISC1_INT_SRC_FNE DAS16CS_MISC1_INT_SRC(3)
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#define DAS16CS_MISC1_INT_SRC_FHF DAS16CS_MISC1_INT_SRC(4)
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#define DAS16CS_MISC1_INT_SRC_EOS DAS16CS_MISC1_INT_SRC(5)
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#define DAS16CS_MISC1_INT_SRC_MASK DAS16CS_MISC1_INT_SRC(7)
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#define DAS16CS_MISC1_OVR BIT(10) /* ro - 1=FIFO overflow */
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#define DAS16CS_MISC1_AI_CONV(x) (((x) & 0x3) << 8) /* AI convert src */
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#define DAS16CS_MISC1_AI_CONV_SW DAS16CS_MISC1_AI_CONV(0)
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#define DAS16CS_MISC1_AI_CONV_EXT_NEG DAS16CS_MISC1_AI_CONV(1)
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#define DAS16CS_MISC1_AI_CONV_EXT_POS DAS16CS_MISC1_AI_CONV(2)
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#define DAS16CS_MISC1_AI_CONV_PACER DAS16CS_MISC1_AI_CONV(3)
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#define DAS16CS_MISC1_AI_CONV_MASK DAS16CS_MISC1_AI_CONV(3)
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#define DAS16CS_MISC1_EOC BIT(7) /* ro - 0=busy; 1=ready */
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#define DAS16CS_MISC1_SEDIFF BIT(5) /* 0=diff; 1=se */
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#define DAS16CS_MISC1_INTB BIT(4) /* ro - 0=latched; 1=cleared */
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#define DAS16CS_MISC1_MA_MASK (0xf << 0) /* ro - current ai mux */
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#define DAS16CS_MISC1_DAC1CS BIT(3) /* wo - DAC1 chip select */
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#define DAS16CS_MISC1_DACCLK BIT(2) /* wo - Serial DAC clock */
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#define DAS16CS_MISC1_DACSD BIT(1) /* wo - Serial DAC data */
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#define DAS16CS_MISC1_DAC0CS BIT(0) /* wo - DAC0 chip select */
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#define DAS16CS_MISC1_DAC_MASK (0x0f << 0)
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#define DAS16CS_MISC2_REG 0x06
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#define DAS16CS_MISC2_BME BIT(14) /* 1=burst enable; 0=disable */
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#define DAS16CS_MISC2_AI_GAIN(x) (((x) & 0xf) << 8) /* AI gain */
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#define DAS16CS_MISC2_AI_GAIN_1 DAS16CS_MISC2_AI_GAIN(4) /* +/-10V */
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#define DAS16CS_MISC2_AI_GAIN_2 DAS16CS_MISC2_AI_GAIN(0) /* +/-5V */
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#define DAS16CS_MISC2_AI_GAIN_4 DAS16CS_MISC2_AI_GAIN(1) /* +/-2.5V */
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#define DAS16CS_MISC2_AI_GAIN_8 DAS16CS_MISC2_AI_GAIN(2) /* +-1.25V */
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#define DAS16CS_MISC2_AI_GAIN_MASK DAS16CS_MISC2_AI_GAIN(0xf)
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#define DAS16CS_MISC2_UDIR BIT(7) /* 1=dio7:4 output; 0=input */
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#define DAS16CS_MISC2_LDIR BIT(6) /* 1=dio3:0 output; 0=input */
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#define DAS16CS_MISC2_TRGPOL BIT(5) /* 1=active lo; 0=hi */
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#define DAS16CS_MISC2_TRGSEL BIT(4) /* 1=edge; 0=level */
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#define DAS16CS_MISC2_FFNE BIT(3) /* ro - 1=FIFO not empty */
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#define DAS16CS_MISC2_TRGCLR BIT(3) /* wo - 1=clr (monstable) */
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#define DAS16CS_MISC2_CLK2 BIT(2) /* 1=10 MHz; 0=1 MHz */
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#define DAS16CS_MISC2_CTR1 BIT(1) /* 1=int. 100 kHz; 0=ext. clk */
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#define DAS16CS_MISC2_TRG0 BIT(0) /* 1=enable; 0=disable */
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#define DAS16CS_TIMER_BASE 0x08
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#define DAS16CS_DIO_REG 0x10
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struct das16cs_board {
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const char *name;
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int device_id;
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unsigned int has_ao:1;
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unsigned int has_4dio:1;
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};
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static const struct das16cs_board das16cs_boards[] = {
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{
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.name = "PC-CARD DAS16/16-AO",
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.device_id = 0x0039,
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.has_ao = 1,
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.has_4dio = 1,
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}, {
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.name = "PCM-DAS16s/16",
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.device_id = 0x4009,
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}, {
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.name = "PC-CARD DAS16/16",
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.device_id = 0x0000, /* unknown */
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},
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};
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struct das16cs_private {
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unsigned short misc1;
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unsigned short misc2;
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};
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static const struct comedi_lrange das16cs_ai_range = {
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4, {
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BIP_RANGE(10),
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BIP_RANGE(5),
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BIP_RANGE(2.5),
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BIP_RANGE(1.25),
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}
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};
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static int das16cs_ai_eoc(struct comedi_device *dev,
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struct comedi_subdevice *s,
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struct comedi_insn *insn,
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unsigned long context)
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{
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unsigned int status;
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status = inw(dev->iobase + DAS16CS_MISC1_REG);
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if (status & DAS16CS_MISC1_EOC)
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return 0;
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return -EBUSY;
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}
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static int das16cs_ai_insn_read(struct comedi_device *dev,
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struct comedi_subdevice *s,
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struct comedi_insn *insn,
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unsigned int *data)
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{
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struct das16cs_private *devpriv = dev->private;
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int chan = CR_CHAN(insn->chanspec);
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int range = CR_RANGE(insn->chanspec);
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int aref = CR_AREF(insn->chanspec);
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int ret;
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int i;
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outw(DAS16CS_AI_MUX_SINGLE_CHAN(chan),
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dev->iobase + DAS16CS_AI_MUX_REG);
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/* disable interrupts, software convert */
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devpriv->misc1 &= ~(DAS16CS_MISC1_INTE | DAS16CS_MISC1_INT_SRC_MASK |
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DAS16CS_MISC1_AI_CONV_MASK);
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if (aref == AREF_DIFF)
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devpriv->misc1 &= ~DAS16CS_MISC1_SEDIFF;
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else
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devpriv->misc1 |= DAS16CS_MISC1_SEDIFF;
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outw(devpriv->misc1, dev->iobase + DAS16CS_MISC1_REG);
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devpriv->misc2 &= ~(DAS16CS_MISC2_BME | DAS16CS_MISC2_AI_GAIN_MASK);
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switch (range) {
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case 0:
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devpriv->misc2 |= DAS16CS_MISC2_AI_GAIN_1;
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break;
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case 1:
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devpriv->misc2 |= DAS16CS_MISC2_AI_GAIN_2;
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break;
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case 2:
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devpriv->misc2 |= DAS16CS_MISC2_AI_GAIN_4;
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break;
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case 3:
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devpriv->misc2 |= DAS16CS_MISC2_AI_GAIN_8;
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break;
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}
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outw(devpriv->misc2, dev->iobase + DAS16CS_MISC2_REG);
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for (i = 0; i < insn->n; i++) {
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outw(0, dev->iobase + DAS16CS_AI_DATA_REG);
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ret = comedi_timeout(dev, s, insn, das16cs_ai_eoc, 0);
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if (ret)
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return ret;
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data[i] = inw(dev->iobase + DAS16CS_AI_DATA_REG);
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}
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return i;
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}
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static int das16cs_ao_insn_write(struct comedi_device *dev,
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struct comedi_subdevice *s,
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struct comedi_insn *insn,
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unsigned int *data)
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{
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struct das16cs_private *devpriv = dev->private;
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unsigned int chan = CR_CHAN(insn->chanspec);
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unsigned int val = s->readback[chan];
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unsigned short misc1;
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int bit;
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int i;
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for (i = 0; i < insn->n; i++) {
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val = data[i];
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outw(devpriv->misc1, dev->iobase + DAS16CS_MISC1_REG);
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udelay(1);
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/* raise the DACxCS line for the non-selected channel */
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misc1 = devpriv->misc1 & ~DAS16CS_MISC1_DAC_MASK;
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if (chan)
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misc1 |= DAS16CS_MISC1_DAC0CS;
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else
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misc1 |= DAS16CS_MISC1_DAC1CS;
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outw(misc1, dev->iobase + DAS16CS_MISC1_REG);
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udelay(1);
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for (bit = 15; bit >= 0; bit--) {
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if ((val >> bit) & 0x1)
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misc1 |= DAS16CS_MISC1_DACSD;
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else
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misc1 &= ~DAS16CS_MISC1_DACSD;
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outw(misc1, dev->iobase + DAS16CS_MISC1_REG);
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udelay(1);
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outw(misc1 | DAS16CS_MISC1_DACCLK,
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dev->iobase + DAS16CS_MISC1_REG);
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udelay(1);
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}
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/*
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* Make both DAC0CS and DAC1CS high to load
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* the new data and update analog the output
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*/
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outw(misc1 | DAS16CS_MISC1_DAC0CS | DAS16CS_MISC1_DAC1CS,
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dev->iobase + DAS16CS_MISC1_REG);
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}
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s->readback[chan] = val;
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return insn->n;
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}
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static int das16cs_dio_insn_bits(struct comedi_device *dev,
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struct comedi_subdevice *s,
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struct comedi_insn *insn,
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unsigned int *data)
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{
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if (comedi_dio_update_state(s, data))
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outw(s->state, dev->iobase + DAS16CS_DIO_REG);
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data[1] = inw(dev->iobase + DAS16CS_DIO_REG);
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return insn->n;
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}
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static int das16cs_dio_insn_config(struct comedi_device *dev,
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struct comedi_subdevice *s,
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struct comedi_insn *insn,
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unsigned int *data)
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{
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struct das16cs_private *devpriv = dev->private;
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unsigned int chan = CR_CHAN(insn->chanspec);
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unsigned int mask;
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int ret;
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if (chan < 4)
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mask = 0x0f;
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else
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mask = 0xf0;
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ret = comedi_dio_insn_config(dev, s, insn, data, mask);
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if (ret)
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return ret;
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if (s->io_bits & 0xf0)
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devpriv->misc2 |= DAS16CS_MISC2_UDIR;
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else
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devpriv->misc2 &= ~DAS16CS_MISC2_UDIR;
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if (s->io_bits & 0x0f)
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devpriv->misc2 |= DAS16CS_MISC2_LDIR;
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else
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devpriv->misc2 &= ~DAS16CS_MISC2_LDIR;
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outw(devpriv->misc2, dev->iobase + DAS16CS_MISC2_REG);
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return insn->n;
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}
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static int das16cs_counter_insn_config(struct comedi_device *dev,
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struct comedi_subdevice *s,
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struct comedi_insn *insn,
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unsigned int *data)
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{
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struct das16cs_private *devpriv = dev->private;
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switch (data[0]) {
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case INSN_CONFIG_SET_CLOCK_SRC:
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switch (data[1]) {
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case 0: /* internal 100 kHz */
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devpriv->misc2 |= DAS16CS_MISC2_CTR1;
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break;
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case 1: /* external */
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devpriv->misc2 &= ~DAS16CS_MISC2_CTR1;
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break;
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default:
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return -EINVAL;
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}
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outw(devpriv->misc2, dev->iobase + DAS16CS_MISC2_REG);
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break;
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case INSN_CONFIG_GET_CLOCK_SRC:
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if (devpriv->misc2 & DAS16CS_MISC2_CTR1) {
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data[1] = 0;
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data[2] = I8254_OSC_BASE_100KHZ;
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} else {
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data[1] = 1;
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data[2] = 0; /* unknown */
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}
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break;
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default:
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return -EINVAL;
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}
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return insn->n;
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}
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static const void *das16cs_find_boardinfo(struct comedi_device *dev,
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struct pcmcia_device *link)
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{
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const struct das16cs_board *board;
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int i;
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for (i = 0; i < ARRAY_SIZE(das16cs_boards); i++) {
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board = &das16cs_boards[i];
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if (board->device_id == link->card_id)
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return board;
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}
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return NULL;
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}
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static int das16cs_auto_attach(struct comedi_device *dev,
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unsigned long context)
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{
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struct pcmcia_device *link = comedi_to_pcmcia_dev(dev);
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const struct das16cs_board *board;
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struct das16cs_private *devpriv;
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struct comedi_subdevice *s;
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int ret;
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board = das16cs_find_boardinfo(dev, link);
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if (!board)
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return -ENODEV;
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dev->board_ptr = board;
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dev->board_name = board->name;
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link->config_flags |= CONF_AUTO_SET_IO | CONF_ENABLE_IRQ;
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ret = comedi_pcmcia_enable(dev, NULL);
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if (ret)
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return ret;
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dev->iobase = link->resource[0]->start;
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link->priv = dev;
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devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
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if (!devpriv)
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return -ENOMEM;
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dev->pacer = comedi_8254_init(dev->iobase + DAS16CS_TIMER_BASE,
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I8254_OSC_BASE_10MHZ, I8254_IO16, 0);
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if (!dev->pacer)
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return -ENOMEM;
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ret = comedi_alloc_subdevices(dev, 4);
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if (ret)
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return ret;
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/* Analog Input subdevice */
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s = &dev->subdevices[0];
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s->type = COMEDI_SUBD_AI;
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s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_DIFF;
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s->n_chan = 16;
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s->maxdata = 0xffff;
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s->range_table = &das16cs_ai_range;
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s->insn_read = das16cs_ai_insn_read;
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/* Analog Output subdevice */
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s = &dev->subdevices[1];
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if (board->has_ao) {
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s->type = COMEDI_SUBD_AO;
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s->subdev_flags = SDF_WRITABLE;
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s->n_chan = 2;
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s->maxdata = 0xffff;
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s->range_table = &range_bipolar10;
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s->insn_write = &das16cs_ao_insn_write;
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ret = comedi_alloc_subdev_readback(s);
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if (ret)
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return ret;
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} else {
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s->type = COMEDI_SUBD_UNUSED;
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}
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/* Digital I/O subdevice */
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s = &dev->subdevices[2];
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s->type = COMEDI_SUBD_DIO;
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s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
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s->n_chan = board->has_4dio ? 4 : 8;
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s->maxdata = 1;
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s->range_table = &range_digital;
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s->insn_bits = das16cs_dio_insn_bits;
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s->insn_config = das16cs_dio_insn_config;
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/* Counter subdevice (8254) */
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s = &dev->subdevices[3];
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comedi_8254_subdevice_init(s, dev->pacer);
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dev->pacer->insn_config = das16cs_counter_insn_config;
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/* counters 1 and 2 are used internally for the pacer */
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comedi_8254_set_busy(dev->pacer, 1, true);
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comedi_8254_set_busy(dev->pacer, 2, true);
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return 0;
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}
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static struct comedi_driver driver_das16cs = {
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.driver_name = "cb_das16_cs",
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.module = THIS_MODULE,
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.auto_attach = das16cs_auto_attach,
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.detach = comedi_pcmcia_disable,
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};
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static int das16cs_pcmcia_attach(struct pcmcia_device *link)
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{
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return comedi_pcmcia_auto_config(link, &driver_das16cs);
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}
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static const struct pcmcia_device_id das16cs_id_table[] = {
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PCMCIA_DEVICE_MANF_CARD(0x01c5, 0x0039),
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PCMCIA_DEVICE_MANF_CARD(0x01c5, 0x4009),
|
|
PCMCIA_DEVICE_NULL
|
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};
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MODULE_DEVICE_TABLE(pcmcia, das16cs_id_table);
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|
|
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static struct pcmcia_driver das16cs_driver = {
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.name = "cb_das16_cs",
|
|
.owner = THIS_MODULE,
|
|
.id_table = das16cs_id_table,
|
|
.probe = das16cs_pcmcia_attach,
|
|
.remove = comedi_pcmcia_auto_unconfig,
|
|
};
|
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module_comedi_pcmcia_driver(driver_das16cs, das16cs_driver);
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|
|
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MODULE_AUTHOR("David A. Schleef <ds@schleef.org>");
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MODULE_DESCRIPTION("Comedi driver for Computer Boards PC-CARD DAS16/16");
|
|
MODULE_LICENSE("GPL");
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