From ebf7c6638bd7385d6548aca1a0c64311b4658b7d Mon Sep 17 00:00:00 2001
From: David Schleef <ds@schleef.org>
Date: Mon, 28 May 2001 00:08:41 +0000
Subject: [PATCH] Update pcmad driver for Comedi changes in the last year.

---
 comedi/drivers/pcmad.c | 98 ++++++++++++++++++------------------------
 1 file changed, 43 insertions(+), 55 deletions(-)

diff --git a/comedi/drivers/pcmad.c b/comedi/drivers/pcmad.c
index 21cd6ba5..0e9dfd5a 100644
--- a/comedi/drivers/pcmad.c
+++ b/comedi/drivers/pcmad.c
@@ -3,7 +3,7 @@
     hardware driver for Winsystems PCM-A/D12 and PCM-A/D16
 
     COMEDI - Linux Control and Measurement Device Interface
-    Copyright (C) 2000 David A. Schleef <ds@stm.lbl.gov>
+    Copyright (C) 2000,2001 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
@@ -24,6 +24,7 @@
 
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/comedidev.h>
 #include <linux/sched.h>
 #include <linux/mm.h>
 #include <linux/malloc.h>
@@ -34,7 +35,6 @@
 #include <linux/timex.h>
 #include <linux/timer.h>
 #include <asm/io.h>
-#include <comedi_module.h>
 
 
 #define PCMAD_SIZE		4
@@ -44,17 +44,6 @@
 #define PCMAD_MSB		2
 #define PCMAD_CONVERT		1
 
-static int pcmad_attach(comedi_device *dev,comedi_devconfig *it);
-static int pcmad_detach(comedi_device *dev);
-static int pcmad_recognize(char *name);
-comedi_driver driver_pcmad={
-	driver_name:	"pcmad",
-	module:		THIS_MODULE,
-	attach:		pcmad_attach,
-	detach:		pcmad_detach,
-	recognize:	pcmad_recognize,
-};
-
 struct pcmad_board_struct{
 	char *name;
 	int n_ai_bits;
@@ -70,7 +59,7 @@ struct pcmad_board_struct pcmad_boards[]={
 	},
 };
 #define this_board ((struct pcmad_board_struct *)(dev->board_ptr))
-static int n_pcmad_boards=(sizeof(pcmad_boards)/sizeof(pcmad_boards[0]));
+#define n_pcmad_boards (sizeof(pcmad_boards)/sizeof(pcmad_boards[0]))
 
 struct pcmad_priv_struct{
 	int differential;
@@ -78,46 +67,47 @@ struct pcmad_priv_struct{
 };
 #define devpriv ((struct pcmad_priv_struct *)dev->private)
 
+static int pcmad_attach(comedi_device *dev,comedi_devconfig *it);
+static int pcmad_detach(comedi_device *dev);
+comedi_driver driver_pcmad={
+	driver_name:	"pcmad",
+	module:		THIS_MODULE,
+	attach:		pcmad_attach,
+	detach:		pcmad_detach,
+	board_name:	pcmad_boards,
+	num_names:	n_pcmad_boards,
+	offset:		sizeof(pcmad_boards[0]),
+};
+COMEDI_INITCLEANUP(driver_pcmad);
+
 
 #define TIMEOUT	100
 
-static int pcmad_ai_mode0(comedi_device *dev,comedi_subdevice *s,comedi_trig *it)
+static int pcmad_ai_insn_read(comedi_device *dev,comedi_subdevice *s,
+	comedi_insn *insn, lsampl_t *data)
 {
-	int i,msb,lsb;
+	int i;
 	int chan;
-	int data;
+	int n;
 
-	chan=CR_CHAN(it->chanlist[0]);
+	chan=CR_CHAN(insn->chanspec);
 
-	outb(chan,dev->iobase+PCMAD_CONVERT);
+	for(n=0;n<insn->n;n++){
+		outb(chan,dev->iobase+PCMAD_CONVERT);
 
-	for(i=0;i<TIMEOUT;i++){
-		if((inb(dev->iobase+PCMAD_STATUS)&0x3) == 0x3)
-			break;
-	}
-	lsb=inb(dev->iobase+PCMAD_LSB);
-	msb=inb(dev->iobase+PCMAD_MSB);
-
-	data=(msb<<8)|(lsb);
+		for(i=0;i<TIMEOUT;i++){
+			if((inb(dev->iobase+PCMAD_STATUS)&0x3) == 0x3)
+				break;
+		}
+		data[n]=inb(dev->iobase+PCMAD_LSB);
+		data[n]|=(inb(dev->iobase+PCMAD_MSB)<<8);
 
-	if(devpriv->twos_comp){
-		data ^= (1<<(this_board->n_ai_bits-1));
+		if(devpriv->twos_comp){
+			data[n] ^= (1<<(this_board->n_ai_bits-1));
+		}
 	}
-	it->data[0]=data;
 	
-	return 1;
-}
-
-static int pcmad_recognize(char *name)
-{
-	int i;
-
-	for(i=0;i<n_pcmad_boards;i++){
-		if(!strcmp(pcmad_boards[i].name,name))
-			return i;
-	}
-
-	return -1;
+	return n;
 }
 
 /*
@@ -131,16 +121,16 @@ static int pcmad_attach(comedi_device *dev,comedi_devconfig *it)
 {
 	int ret;
 	comedi_subdevice *s;
+	int iobase;
 
-	dev->iobase=it->options[0];
-	printk("comedi%d: pcmad: 0x%04x ",dev->minor,dev->iobase);
-	if(check_region(dev->iobase,PCMAD_SIZE)<0){
+	iobase=it->options[0];
+	printk("comedi%d: pcmad: 0x%04x ",dev->minor,iobase);
+	if(check_region(iobase,PCMAD_SIZE)<0){
 		printk("I/O port conflict\n");
 		return -EIO;
 	}
-	request_region(dev->iobase,PCMAD_SIZE,"pcmad");
-	dev->iobase=dev->iobase;
-	dev->iosize=PCMAD_SIZE;
+	request_region(iobase,PCMAD_SIZE,"pcmad");
+	dev->iobase=iobase;
 
 	dev->n_subdevices=1;
 	if((ret=alloc_subdevices(dev))<0)
@@ -148,14 +138,14 @@ static int pcmad_attach(comedi_device *dev,comedi_devconfig *it)
 	if((ret=alloc_private(dev,sizeof(struct pcmad_priv_struct)))<0)
 		return ret;
 
-	dev->board_ptr = pcmad_boards+dev->board;
+	dev->board_name = this_board->name;
 
 	s=dev->subdevices+0;
 	s->type=COMEDI_SUBD_AI;
 	s->subdev_flags=SDF_READABLE;
 	s->n_chan=16;			/* XXX */
 	s->len_chanlist=1;
-	s->trig[0]=pcmad_ai_mode0;
+	s->insn_read=pcmad_ai_insn_read;
 	s->maxdata=(1<<this_board->n_ai_bits)-1;
 	s->range_table=&range_unknown;
 
@@ -170,11 +160,9 @@ static int pcmad_detach(comedi_device *dev)
 	if(dev->irq){
 		free_irq(dev->irq,dev);
 	}
-	release_region(dev->iobase,dev->iosize);
+	if(dev->iobase)
+		release_region(dev->iobase,PCMAD_SIZE);
 
 	return 0;
 }
 
-
-COMEDI_INITCLEANUP(driver_pcmad);
-
-- 
2.26.2