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Staging: comedi: add pcl711 driver
hardware driver for PC-LabCard PCL-711 and AdSys ACL-8112 From: David Schleef <ds@schleef.org> Cc: Frank Mori Hess <fmhess@users.sourceforge.net> Cc: Ian Abbott <abbotti@mev.co.uk> Cc: Janne Jalkanen <jalkanen@cs.hut.fi> Cc: Eric Bunn <ebu@cs.hut.fi> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
David Schleef
Greg Kroah-Hartman
parent
58e732ee57
commit
456af2011c
619
drivers/staging/comedi/drivers/pcl711.c
Normal file
619
drivers/staging/comedi/drivers/pcl711.c
Normal file
@ -0,0 +1,619 @@
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/*
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comedi/drivers/pcl711.c
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hardware driver for PC-LabCard PCL-711 and AdSys ACL-8112
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and compatibles
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COMEDI - Linux Control and Measurement Device Interface
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Copyright (C) 1998 David A. Schleef <ds@schleef.org>
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Janne Jalkanen <jalkanen@cs.hut.fi>
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Eric Bunn <ebu@cs.hut.fi>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/*
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Driver: pcl711
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Description: Advantech PCL-711 and 711b, ADLink ACL-8112
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Author: ds, Janne Jalkanen <jalkanen@cs.hut.fi>, Eric Bunn <ebu@cs.hut.fi>
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Status: mostly complete
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Devices: [Advantech] PCL-711 (pcl711), PCL-711B (pcl711b),
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[AdLink] ACL-8112HG (acl8112hg), ACL-8112DG (acl8112dg)
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Since these boards do not have DMA or FIFOs, only immediate mode is
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supported.
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*/
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/*
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Dave Andruczyk <dave@tech.buffalostate.edu> also wrote a
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driver for the PCL-711. I used a few ideas from his driver
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here. His driver also has more comments, if you are
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interested in understanding how this driver works.
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http://tech.buffalostate.edu/~dave/driver/
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The ACL-8112 driver was hacked from the sources of the PCL-711
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driver (the 744 chip used on the 8112 is almost the same as
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the 711b chip, but it has more I/O channels) by
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Janne Jalkanen (jalkanen@cs.hut.fi) and
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Erik Bunn (ebu@cs.hut.fi). Remerged with the PCL-711 driver
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by ds.
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[acl-8112]
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This driver supports both TRIGNOW and TRIGCLK,
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but does not yet support DMA transfers. It also supports
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both high (HG) and low (DG) versions of the card, though
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the HG version has been untested.
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*/
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#include "../comedidev.h"
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#include <linux/ioport.h>
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#include <linux/delay.h>
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#include "8253.h"
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#define PCL711_SIZE 16
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#define PCL711_CTR0 0
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#define PCL711_CTR1 1
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#define PCL711_CTR2 2
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#define PCL711_CTRCTL 3
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#define PCL711_AD_LO 4
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#define PCL711_DA0_LO 4
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#define PCL711_AD_HI 5
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#define PCL711_DA0_HI 5
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#define PCL711_DI_LO 6
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#define PCL711_DA1_LO 6
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#define PCL711_DI_HI 7
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#define PCL711_DA1_HI 7
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#define PCL711_CLRINTR 8
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#define PCL711_GAIN 9
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#define PCL711_MUX 10
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#define PCL711_MODE 11
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#define PCL711_SOFTTRIG 12
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#define PCL711_DO_LO 13
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#define PCL711_DO_HI 14
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static const comedi_lrange range_pcl711b_ai = { 5, {
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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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BIP_RANGE(0.625),
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BIP_RANGE(0.3125)
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}
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};
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static const comedi_lrange range_acl8112hg_ai = { 12, {
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BIP_RANGE(5),
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BIP_RANGE(0.5),
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BIP_RANGE(0.05),
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BIP_RANGE(0.005),
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UNI_RANGE(10),
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UNI_RANGE(1),
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UNI_RANGE(0.1),
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UNI_RANGE(0.01),
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BIP_RANGE(10),
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BIP_RANGE(1),
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BIP_RANGE(0.1),
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BIP_RANGE(0.01)
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}
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};
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static const comedi_lrange range_acl8112dg_ai = { 9, {
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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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BIP_RANGE(0.625),
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UNI_RANGE(10),
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UNI_RANGE(5),
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UNI_RANGE(2.5),
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UNI_RANGE(1.25),
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BIP_RANGE(10)
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}
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};
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/*
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* flags
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*/
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#define PCL711_TIMEOUT 100
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#define PCL711_DRDY 0x10
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static const int i8253_osc_base = 500; /* 2 Mhz */
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typedef struct {
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const char *name;
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int is_pcl711b;
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int is_8112;
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int is_dg;
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int n_ranges;
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int n_aichan;
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int n_aochan;
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int maxirq;
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const comedi_lrange *ai_range_type;
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} boardtype;
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static const boardtype boardtypes[] = {
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{"pcl711", 0, 0, 0, 5, 8, 1, 0, &range_bipolar5},
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{"pcl711b", 1, 0, 0, 5, 8, 1, 7, &range_pcl711b_ai},
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{"acl8112hg", 0, 1, 0, 12, 16, 2, 15, &range_acl8112hg_ai},
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{"acl8112dg", 0, 1, 1, 9, 16, 2, 15, &range_acl8112dg_ai},
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};
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#define n_boardtypes (sizeof(boardtypes)/sizeof(boardtype))
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#define this_board ((const boardtype *)dev->board_ptr)
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static int pcl711_attach(comedi_device * dev, comedi_devconfig * it);
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static int pcl711_detach(comedi_device * dev);
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static comedi_driver driver_pcl711 = {
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driver_name:"pcl711",
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module:THIS_MODULE,
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attach:pcl711_attach,
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detach:pcl711_detach,
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board_name:&boardtypes[0].name,
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num_names:n_boardtypes,
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offset:sizeof(boardtype),
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};
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COMEDI_INITCLEANUP(driver_pcl711);
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typedef struct {
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int board;
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int adchan;
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int ntrig;
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int aip[8];
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int mode;
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lsampl_t ao_readback[2];
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unsigned int divisor1;
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unsigned int divisor2;
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} pcl711_private;
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#define devpriv ((pcl711_private *)dev->private)
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static irqreturn_t pcl711_interrupt(int irq, void *d PT_REGS_ARG)
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{
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int lo, hi;
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int data;
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comedi_device *dev = d;
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comedi_subdevice *s = dev->subdevices + 0;
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if (!dev->attached) {
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comedi_error(dev, "spurious interrupt");
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return IRQ_HANDLED;
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}
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hi = inb(dev->iobase + PCL711_AD_HI);
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lo = inb(dev->iobase + PCL711_AD_LO);
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outb(0, dev->iobase + PCL711_CLRINTR);
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data = (hi << 8) | lo;
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/* FIXME! Nothing else sets ntrig! */
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if (!(--devpriv->ntrig)) {
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if (this_board->is_8112) {
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outb(1, dev->iobase + PCL711_MODE);
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} else {
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outb(0, dev->iobase + PCL711_MODE);
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}
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s->async->events |= COMEDI_CB_EOA;
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}
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comedi_event(dev, s);
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return IRQ_HANDLED;
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}
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static void pcl711_set_changain(comedi_device * dev, int chan)
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{
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int chan_register;
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outb(CR_RANGE(chan), dev->iobase + PCL711_GAIN);
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chan_register = CR_CHAN(chan);
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if (this_board->is_8112) {
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/*
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* Set the correct channel. The two channel banks are switched
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* using the mask value.
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* NB: To use differential channels, you should use mask = 0x30,
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* but I haven't written the support for this yet. /JJ
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*/
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if (chan_register >= 8) {
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chan_register = 0x20 | (chan_register & 0x7);
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} else {
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chan_register |= 0x10;
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}
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} else {
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outb(chan_register, dev->iobase + PCL711_MUX);
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}
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}
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static int pcl711_ai_insn(comedi_device * dev, comedi_subdevice * s,
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comedi_insn * insn, lsampl_t * data)
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{
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int i, n;
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int hi, lo;
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pcl711_set_changain(dev, insn->chanspec);
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for (n = 0; n < insn->n; n++) {
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/*
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* Write the correct mode (software polling) and start polling by writing
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* to the trigger register
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*/
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outb(1, dev->iobase + PCL711_MODE);
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if (this_board->is_8112) {
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} else {
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outb(0, dev->iobase + PCL711_SOFTTRIG);
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}
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i = PCL711_TIMEOUT;
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while (--i) {
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hi = inb(dev->iobase + PCL711_AD_HI);
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if (!(hi & PCL711_DRDY))
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goto ok;
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comedi_udelay(1);
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}
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rt_printk("comedi%d: pcl711: A/D timeout\n", dev->minor);
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return -ETIME;
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ok:
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lo = inb(dev->iobase + PCL711_AD_LO);
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data[n] = ((hi & 0xf) << 8) | lo;
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}
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return n;
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}
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static int pcl711_ai_cmdtest(comedi_device * dev, comedi_subdevice * s,
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comedi_cmd * cmd)
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{
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int tmp;
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int err = 0;
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/* step 1 */
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tmp = cmd->start_src;
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cmd->start_src &= TRIG_NOW;
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if (!cmd->start_src || tmp != cmd->start_src)
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err++;
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tmp = cmd->scan_begin_src;
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cmd->scan_begin_src &= TRIG_TIMER | TRIG_EXT;
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if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src)
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err++;
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tmp = cmd->convert_src;
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cmd->convert_src &= TRIG_NOW;
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if (!cmd->convert_src || tmp != cmd->convert_src)
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err++;
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tmp = cmd->scan_end_src;
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cmd->scan_end_src &= TRIG_COUNT;
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if (!cmd->scan_end_src || tmp != cmd->scan_end_src)
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err++;
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tmp = cmd->stop_src;
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cmd->stop_src &= TRIG_COUNT | TRIG_NONE;
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if (!cmd->stop_src || tmp != cmd->stop_src)
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err++;
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if (err)
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return 1;
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/* step 2 */
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if (cmd->scan_begin_src != TRIG_TIMER &&
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cmd->scan_begin_src != TRIG_EXT)
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err++;
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if (cmd->stop_src != TRIG_COUNT && cmd->stop_src != TRIG_NONE)
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err++;
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if (err)
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return 2;
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/* step 3 */
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if (cmd->start_arg != 0) {
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cmd->start_arg = 0;
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err++;
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}
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if (cmd->scan_begin_src == TRIG_EXT) {
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if (cmd->scan_begin_arg != 0) {
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cmd->scan_begin_arg = 0;
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err++;
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}
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} else {
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#define MAX_SPEED 1000
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#define TIMER_BASE 100
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if (cmd->scan_begin_arg < MAX_SPEED) {
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cmd->scan_begin_arg = MAX_SPEED;
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err++;
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}
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}
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if (cmd->convert_arg != 0) {
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cmd->convert_arg = 0;
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err++;
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}
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if (cmd->scan_end_arg != cmd->chanlist_len) {
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cmd->scan_end_arg = cmd->chanlist_len;
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err++;
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}
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if (cmd->stop_src == TRIG_NONE) {
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if (cmd->stop_arg != 0) {
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cmd->stop_arg = 0;
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err++;
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}
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} else {
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/* ignore */
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}
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if (err)
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return 3;
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/* step 4 */
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if (cmd->scan_begin_src == TRIG_TIMER) {
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tmp = cmd->scan_begin_arg;
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i8253_cascade_ns_to_timer_2div(TIMER_BASE,
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&devpriv->divisor1, &devpriv->divisor2,
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&cmd->scan_begin_arg, cmd->flags & TRIG_ROUND_MASK);
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if (tmp != cmd->scan_begin_arg)
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err++;
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}
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if (err)
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return 4;
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return 0;
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}
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static int pcl711_ai_cmd(comedi_device * dev, comedi_subdevice * s)
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{
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int timer1, timer2;
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comedi_cmd *cmd = &s->async->cmd;
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pcl711_set_changain(dev, cmd->chanlist[0]);
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if (cmd->scan_begin_src == TRIG_TIMER) {
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/*
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* Set timers
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* timer chip is an 8253, with timers 1 and 2
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* cascaded
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* 0x74 = Select Counter 1 | LSB/MSB | Mode=2 | Binary
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* Mode 2 = Rate generator
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*
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* 0xb4 = Select Counter 2 | LSB/MSB | Mode=2 | Binary
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*/
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i8253_cascade_ns_to_timer(i8253_osc_base, &timer1, &timer2,
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&cmd->scan_begin_arg, TRIG_ROUND_NEAREST);
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outb(0x74, dev->iobase + PCL711_CTRCTL);
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outb(timer1 & 0xff, dev->iobase + PCL711_CTR1);
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outb((timer1 >> 8) & 0xff, dev->iobase + PCL711_CTR1);
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outb(0xb4, dev->iobase + PCL711_CTRCTL);
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outb(timer2 & 0xff, dev->iobase + PCL711_CTR2);
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outb((timer2 >> 8) & 0xff, dev->iobase + PCL711_CTR2);
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/* clear pending interrupts (just in case) */
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outb(0, dev->iobase + PCL711_CLRINTR);
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/*
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* Set mode to IRQ transfer
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||||
*/
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outb(devpriv->mode | 6, dev->iobase + PCL711_MODE);
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} else {
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/* external trigger */
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outb(devpriv->mode | 3, dev->iobase + PCL711_MODE);
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||||
}
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||||
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||||
return 0;
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}
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||||
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||||
/*
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analog output
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*/
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||||
static int pcl711_ao_insn(comedi_device * dev, comedi_subdevice * s,
|
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comedi_insn * insn, lsampl_t * data)
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{
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int n;
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int chan = CR_CHAN(insn->chanspec);
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||||
for (n = 0; n < insn->n; n++) {
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outb((data[n] & 0xff),
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dev->iobase + (chan ? PCL711_DA1_LO : PCL711_DA0_LO));
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outb((data[n] >> 8),
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dev->iobase + (chan ? PCL711_DA1_HI : PCL711_DA0_HI));
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||||
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||||
devpriv->ao_readback[chan] = data[n];
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}
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||||
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||||
return n;
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||||
}
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||||
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||||
static int pcl711_ao_insn_read(comedi_device * dev, comedi_subdevice * s,
|
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comedi_insn * insn, lsampl_t * data)
|
||||
{
|
||||
int n;
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||||
int chan = CR_CHAN(insn->chanspec);
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||||
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||||
for (n = 0; n < insn->n; n++) {
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data[n] = devpriv->ao_readback[chan];
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}
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||||
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||||
return n;
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||||
|
||||
}
|
||||
|
||||
/* Digital port read - Untested on 8112 */
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static int pcl711_di_insn_bits(comedi_device * dev, comedi_subdevice * s,
|
||||
comedi_insn * insn, lsampl_t * data)
|
||||
{
|
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if (insn->n != 2)
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return -EINVAL;
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||||
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||||
data[1] = inb(dev->iobase + PCL711_DI_LO) |
|
||||
(inb(dev->iobase + PCL711_DI_HI) << 8);
|
||||
|
||||
return 2;
|
||||
}
|
||||
|
||||
/* Digital port write - Untested on 8112 */
|
||||
static int pcl711_do_insn_bits(comedi_device * dev, comedi_subdevice * s,
|
||||
comedi_insn * insn, lsampl_t * data)
|
||||
{
|
||||
if (insn->n != 2)
|
||||
return -EINVAL;
|
||||
|
||||
if (data[0]) {
|
||||
s->state &= ~data[0];
|
||||
s->state |= data[0] & data[1];
|
||||
}
|
||||
if (data[0] & 0x00ff)
|
||||
outb(s->state & 0xff, dev->iobase + PCL711_DO_LO);
|
||||
if (data[0] & 0xff00)
|
||||
outb((s->state >> 8), dev->iobase + PCL711_DO_HI);
|
||||
|
||||
data[1] = s->state;
|
||||
|
||||
return 2;
|
||||
}
|
||||
|
||||
/* Free any resources that we have claimed */
|
||||
static int pcl711_detach(comedi_device * dev)
|
||||
{
|
||||
printk("comedi%d: pcl711: remove\n", dev->minor);
|
||||
|
||||
if (dev->irq)
|
||||
comedi_free_irq(dev->irq, dev);
|
||||
|
||||
if (dev->iobase)
|
||||
release_region(dev->iobase, PCL711_SIZE);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Initialization */
|
||||
static int pcl711_attach(comedi_device * dev, comedi_devconfig * it)
|
||||
{
|
||||
int ret;
|
||||
unsigned long iobase;
|
||||
unsigned int irq;
|
||||
comedi_subdevice *s;
|
||||
|
||||
/* claim our I/O space */
|
||||
|
||||
iobase = it->options[0];
|
||||
printk("comedi%d: pcl711: 0x%04lx ", dev->minor, iobase);
|
||||
if (!request_region(iobase, PCL711_SIZE, "pcl711")) {
|
||||
printk("I/O port conflict\n");
|
||||
return -EIO;
|
||||
}
|
||||
dev->iobase = iobase;
|
||||
|
||||
/* there should be a sanity check here */
|
||||
|
||||
/* set up some name stuff */
|
||||
dev->board_name = this_board->name;
|
||||
|
||||
/* grab our IRQ */
|
||||
irq = it->options[1];
|
||||
if (irq > this_board->maxirq) {
|
||||
printk("irq out of range\n");
|
||||
return -EINVAL;
|
||||
}
|
||||
if (irq) {
|
||||
if (comedi_request_irq(irq, pcl711_interrupt, 0, "pcl711", dev)) {
|
||||
printk("unable to allocate irq %u\n", irq);
|
||||
return -EINVAL;
|
||||
} else {
|
||||
printk("( irq = %u )\n", irq);
|
||||
}
|
||||
}
|
||||
dev->irq = irq;
|
||||
|
||||
if ((ret = alloc_subdevices(dev, 4)) < 0)
|
||||
return ret;
|
||||
if ((ret = alloc_private(dev, sizeof(pcl711_private))) < 0)
|
||||
return ret;
|
||||
|
||||
s = dev->subdevices + 0;
|
||||
/* AI subdevice */
|
||||
s->type = COMEDI_SUBD_AI;
|
||||
s->subdev_flags = SDF_READABLE | SDF_GROUND;
|
||||
s->n_chan = this_board->n_aichan;
|
||||
s->maxdata = 0xfff;
|
||||
s->len_chanlist = 1;
|
||||
s->range_table = this_board->ai_range_type;
|
||||
s->insn_read = pcl711_ai_insn;
|
||||
if (irq) {
|
||||
dev->read_subdev = s;
|
||||
s->subdev_flags |= SDF_CMD_READ;
|
||||
s->do_cmdtest = pcl711_ai_cmdtest;
|
||||
s->do_cmd = pcl711_ai_cmd;
|
||||
}
|
||||
|
||||
s++;
|
||||
/* AO subdevice */
|
||||
s->type = COMEDI_SUBD_AO;
|
||||
s->subdev_flags = SDF_WRITABLE;
|
||||
s->n_chan = this_board->n_aochan;
|
||||
s->maxdata = 0xfff;
|
||||
s->len_chanlist = 1;
|
||||
s->range_table = &range_bipolar5;
|
||||
s->insn_write = pcl711_ao_insn;
|
||||
s->insn_read = pcl711_ao_insn_read;
|
||||
|
||||
s++;
|
||||
/* 16-bit digital input */
|
||||
s->type = COMEDI_SUBD_DI;
|
||||
s->subdev_flags = SDF_READABLE;
|
||||
s->n_chan = 16;
|
||||
s->maxdata = 1;
|
||||
s->len_chanlist = 16;
|
||||
s->range_table = &range_digital;
|
||||
s->insn_bits = pcl711_di_insn_bits;
|
||||
|
||||
s++;
|
||||
/* 16-bit digital out */
|
||||
s->type = COMEDI_SUBD_DO;
|
||||
s->subdev_flags = SDF_WRITABLE;
|
||||
s->n_chan = 16;
|
||||
s->maxdata = 1;
|
||||
s->len_chanlist = 16;
|
||||
s->range_table = &range_digital;
|
||||
s->state = 0;
|
||||
s->insn_bits = pcl711_do_insn_bits;
|
||||
|
||||
/*
|
||||
this is the "base value" for the mode register, which is
|
||||
used for the irq on the PCL711
|
||||
*/
|
||||
if (this_board->is_pcl711b) {
|
||||
devpriv->mode = (dev->irq << 4);
|
||||
}
|
||||
|
||||
/* clear DAC */
|
||||
outb(0, dev->iobase + PCL711_DA0_LO);
|
||||
outb(0, dev->iobase + PCL711_DA0_HI);
|
||||
outb(0, dev->iobase + PCL711_DA1_LO);
|
||||
outb(0, dev->iobase + PCL711_DA1_HI);
|
||||
|
||||
printk("\n");
|
||||
|
||||
return 0;
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user