From: David Schleef <ds@schleef.org>
Date: Mon, 7 Feb 2000 23:08:29 +0000 (+0000)
Subject: Fix to make comedi_parport driver modular
X-Git-Tag: r0_7_38~8
X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=fc23abaa9fd95813e38a817e3a8c9eb0bc962357;p=comedi.git

Fix to make comedi_parport driver modular
---

diff --git a/comedi/drivers/Makefile b/comedi/drivers/Makefile
index 2cdd2939..d0112b93 100644
--- a/comedi/drivers/Makefile
+++ b/comedi/drivers/Makefile
@@ -40,6 +40,8 @@ obj-$(CONFIG_COMEDI_PCL711)		+= pcl711.o
 obj-$(CONFIG_COMEDI_PCL725)		+= pcl725.o
 obj-$(CONFIG_COMEDI_PCL726)		+= pcl726.o
 
+obj-$(CONFIG_COMEDI_PARPORT)		+= comedi_parport.o
+
 obj-$(CONFIG_COMEDI_RTI800)		+= rti800.o
 obj-$(CONFIG_COMEDI_RTI802)		+= rti802.o
 
diff --git a/comedi/drivers/comedi_parport.c b/comedi/drivers/comedi_parport.c
new file mode 100644
index 00000000..3490507e
--- /dev/null
+++ b/comedi/drivers/comedi_parport.c
@@ -0,0 +1,157 @@
+/*
+    module/parport.c
+    hardware driver for standard parallel port
+
+    COMEDI - Linux Control and Measurement Device Interface
+    Copyright (C) 1998 David A. Schleef <ds@stm.lbl.gov>
+
+    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.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+/*
+
+   TODO:
+
+   - support bit mask ioctl
+   - EPP/ECP support
+
+   see http://www.senet.com.au/~cpeacock/parallel.htm for information.
+ */
+
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/mm.h>
+#include <linux/malloc.h>
+#include <linux/errno.h>
+#include <linux/ioport.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/timex.h>
+#include <linux/timer.h>
+#include <asm/io.h>
+#include <comedi_module.h>
+
+
+#define PARPORT_SIZE 3
+
+#define PARPORT_A 0
+#define PARPORT_B 1
+#define PARPORT_C 2
+
+static int parport_attach(comedi_device *dev,comedi_devconfig *it);
+static int parport_detach(comedi_device *dev);
+comedi_driver driver_parport={
+	driver_name:	"parport",
+	module:		&__this_module,
+	attach:		parport_attach,
+	detach:		parport_detach,
+};
+
+
+static int parport_dio_a(comedi_device *dev,comedi_subdevice *s,comedi_trig *it)
+{
+	outb(it->data[0],dev->iobase+PARPORT_A);
+
+	return 1;
+}
+
+static int parport_dio_b(comedi_device *dev,comedi_subdevice *s,comedi_trig *it)
+{
+	it->data[0]=(inb(dev->iobase+PARPORT_B)>>3);
+
+	return 1;
+}
+
+static int parport_dio_c(comedi_device *dev,comedi_subdevice *s,comedi_trig *it)
+{
+	outb(it->data[0],dev->iobase+PARPORT_C);
+
+	return 1;
+}
+
+
+static int parport_attach(comedi_device *dev,comedi_devconfig *it)
+{
+	int ret;
+	comedi_subdevice *s;
+
+	dev->iobase=it->options[0];
+	printk("comedi%d: parport: 0x%04x ",dev->minor,dev->iobase);
+	if(check_region(dev->iobase,PARPORT_SIZE)<0){
+		printk("I/O port conflict\n");
+		return -EIO;
+	}
+	request_region(dev->iobase,PARPORT_SIZE,"parport (comedi)");
+	dev->iosize=PARPORT_SIZE;
+	dev->irq=0;
+	dev->board_name="parport";
+
+	dev->n_subdevices=3;
+	if((ret=alloc_subdevices(dev))<0)
+		return ret;
+
+	s=dev->subdevices+0;
+	s->type=COMEDI_SUBD_DO;
+	s->subdev_flags=SDF_WRITEABLE;
+	s->n_chan=8;
+	s->maxdata=1;
+	s->range_type=RANGE_digital;
+	s->trig[0]=parport_dio_a;
+
+	s=dev->subdevices+1;
+	s->type=COMEDI_SUBD_DI;
+	s->subdev_flags=SDF_READABLE;
+	s->n_chan=4;
+	s->maxdata=1;
+	s->range_type=RANGE_digital;
+	s->trig[0]=parport_dio_b;
+
+	s=dev->subdevices+2;
+	s->type=COMEDI_SUBD_DO;
+	s->subdev_flags=SDF_WRITEABLE;
+	s->n_chan=4;
+	s->maxdata=1;
+	s->range_type=RANGE_digital;
+	s->trig[0]=parport_dio_c;
+
+	printk("\n");
+	return 1;
+}
+
+
+static int parport_detach(comedi_device *dev)
+{
+	printk("comedi%d: parport: remove\n",dev->minor);
+	
+	release_region(dev->iobase,dev->iosize);
+
+	return 0;
+}
+
+#ifdef MODULE
+int init_module(void)
+{
+	comedi_driver_register(&driver_parport);
+
+	return 0;
+}
+
+void cleanup_module(void)
+{
+	comedi_driver_unregister(&driver_parport);
+}
+#endif
+