hwdrv_apci1032.c revision 6cd5a9a35c3de4ed28b55212698fe69c328e4206 
1/**
2@verbatim
3
4Copyright (C) 2004,2005  ADDI-DATA GmbH for the source code of this module.
5
6	ADDI-DATA GmbH
7	Dieselstrasse 3
8	D-77833 Ottersweier
9	Tel: +19(0)7223/9493-0
10	Fax: +49(0)7223/9493-92
11	http://www.addi-data-com
12	info@addi-data.com
13
14This 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.
15
16This 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.
17
18You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19
20You should also find the complete GPL in the COPYING file accompanying this source code.
21
22@endverbatim
23*/
24/*
25
26  +-----------------------------------------------------------------------+
27  | (C) ADDI-DATA GmbH          Dieselstraße 3       D-77833 Ottersweier  |
28  +-----------------------------------------------------------------------+
29  | Tel : +49 (0) 7223/9493-0     | email    : info@addi-data.com         |
30  | Fax : +49 (0) 7223/9493-92    | Internet : http://www.addi-data.com   |
31  +-------------------------------+---------------------------------------+
32  | Project     : APCI-1032       | Compiler   : GCC                      |
33  | Module name : hwdrv_apci1032.c| Version    : 2.96                     |
34  +-------------------------------+---------------------------------------+
35  | Project manager: Eric Stolz   | Date       :  02/12/2002              |
36  +-------------------------------+---------------------------------------+
37  | Description :   Hardware Layer Access For APCI-1032                   |
38  +-----------------------------------------------------------------------+
39  |                             UPDATES                                   |
40  +----------+-----------+------------------------------------------------+
41  |   Date   |   Author  |          Description of updates                |
42  +----------+-----------+------------------------------------------------+
43  |          |           |                                                |
44  |          |           |                                                |
45  |          |           |                                                |
46  +----------+-----------+------------------------------------------------+
47*/
48
49/*
50+----------------------------------------------------------------------------+
51|                               Included files                               |
52+----------------------------------------------------------------------------+
53*/
54#include "hwdrv_apci1032.h"
55#include <linux/delay.h>
56
57static unsigned int ui_InterruptStatus;
58
59/*
60+----------------------------------------------------------------------------+
61| Function   Name   : int i_APCI1032_ConfigDigitalInput                      |
62|			  (struct comedi_device *dev,struct comedi_subdevice *s,               |
63|                      struct comedi_insn *insn,unsigned int *data)                     |
64+----------------------------------------------------------------------------+
65| Task              : Configures the digital input Subdevice                 |
66+----------------------------------------------------------------------------+
67| Input Parameters  : struct comedi_device *dev : Driver handle                     |
68|                     unsigned int *data         : Data Pointer contains         |
69|                                          configuration parameters as below |
70|                                                                            |
71|			  data[0]            : 1 Enable  Digital Input Interrupt |
72|								   0 Disable Digital Input Interrupt |
73|			  data[1]            : 0 ADDIDATA Interrupt OR LOGIC	 |
74|								 : 1 ADDIDATA Interrupt AND LOGIC    |
75|			  data[2]			 : Interrupt mask for the mode 1	 |
76|			  data[3]			 : Interrupt mask for the mode 2	 |
77|																	 |
78+----------------------------------------------------------------------------+
79| Output Parameters :	--													 |
80+----------------------------------------------------------------------------+
81| Return Value      : TRUE  : No error occur                                 |
82|		            : FALSE : Error occur. Return the error          |
83|			                                                         |
84+----------------------------------------------------------------------------+
85*/
86
87int i_APCI1032_ConfigDigitalInput(struct comedi_device *dev, struct comedi_subdevice *s,
88	struct comedi_insn *insn, unsigned int *data)
89{
90	unsigned int ui_TmpValue;
91
92	unsigned int ul_Command1 = 0;
93	unsigned int ul_Command2 = 0;
94	devpriv->tsk_Current = current;
95
96  /*******************************/
97	/* Set the digital input logic */
98  /*******************************/
99	if (data[0] == ADDIDATA_ENABLE) {
100		ul_Command1 = ul_Command1 | data[2];
101		ul_Command2 = ul_Command2 | data[3];
102		outl(ul_Command1,
103			devpriv->iobase + APCI1032_DIGITAL_IP_INTERRUPT_MODE1);
104		outl(ul_Command2,
105			devpriv->iobase + APCI1032_DIGITAL_IP_INTERRUPT_MODE2);
106		if (data[1] == ADDIDATA_OR) {
107			outl(0x4, devpriv->iobase + APCI1032_DIGITAL_IP_IRQ);
108			ui_TmpValue =
109				inl(devpriv->iobase + APCI1032_DIGITAL_IP_IRQ);
110		}		/* if (data[1] == ADDIDATA_OR) */
111		else
112			outl(0x6, devpriv->iobase + APCI1032_DIGITAL_IP_IRQ);
113				/* else if(data[1] == ADDIDATA_OR) */
114	}			/*  if( data[0] == ADDIDATA_ENABLE) */
115	else {
116		ul_Command1 = ul_Command1 & 0xFFFF0000;
117		ul_Command2 = ul_Command2 & 0xFFFF0000;
118		outl(ul_Command1,
119			devpriv->iobase + APCI1032_DIGITAL_IP_INTERRUPT_MODE1);
120		outl(ul_Command2,
121			devpriv->iobase + APCI1032_DIGITAL_IP_INTERRUPT_MODE2);
122		outl(0x0, devpriv->iobase + APCI1032_DIGITAL_IP_IRQ);
123	}			/* else if  ( data[0] == ADDIDATA_ENABLE) */
124
125	return insn->n;
126}
127
128/*
129+----------------------------------------------------------------------------+
130| Function   Name   : int i_APCI1032_Read1DigitalInput                       |
131|			  (struct comedi_device *dev,struct comedi_subdevice *s,               |
132|                      struct comedi_insn *insn,unsigned int *data)                     |
133+----------------------------------------------------------------------------+
134| Task              : Return the status of the digital input                 |
135+----------------------------------------------------------------------------+
136| Input Parameters  : struct comedi_device *dev      : Driver handle                |
137|		              unsigned int ui_Channel : Channel number to read       |
138|                     unsigned int *data          : Data Pointer to read status  |
139+----------------------------------------------------------------------------+
140| Output Parameters :	--													 |
141+----------------------------------------------------------------------------+
142| Return Value      : TRUE  : No error occur                                 |
143|		            : FALSE : Error occur. Return the error          |
144|			                                                         |
145+----------------------------------------------------------------------------+
146*/
147int i_APCI1032_Read1DigitalInput(struct comedi_device *dev, struct comedi_subdevice *s,
148	struct comedi_insn *insn, unsigned int *data)
149{
150	unsigned int ui_TmpValue = 0;
151	unsigned int ui_Channel;
152	ui_Channel = CR_CHAN(insn->chanspec);
153	if (ui_Channel <= 31) {
154		ui_TmpValue = (unsigned int) inl(devpriv->iobase + APCI1032_DIGITAL_IP);
155/*
156* since only 1 channel reqd to bring it to last bit it is rotated 8
157* +(chan - 1) times then ANDed with 1 for last bit.
158*/
159		*data = (ui_TmpValue >> ui_Channel) & 0x1;
160	}			/* if(ui_Channel >= 0 && ui_Channel <=31) */
161	else {
162		/* comedi_error(dev," \n chan spec wrong\n"); */
163		return -EINVAL;	/*  "sorry channel spec wrong " */
164	}			/* else if(ui_Channel >= 0 && ui_Channel <=31) */
165	return insn->n;
166}
167
168/*
169+----------------------------------------------------------------------------+
170| Function   Name   : int i_APCI1032_ReadMoreDigitalInput                    |
171|			  (struct comedi_device *dev,struct comedi_subdevice *s,               |
172|                     struct comedi_insn *insn,unsigned int *data)                      |
173+----------------------------------------------------------------------------+
174| Task              : Return the status of the Requested digital inputs      |
175+----------------------------------------------------------------------------+
176| Input Parameters  : struct comedi_device *dev      : Driver handle                |
177|                     unsigned int ui_NoOfChannels    : No Of Channels To be Read    |
178|                      unsigned int *data             : Data Pointer to read status  |
179+----------------------------------------------------------------------------+
180| Output Parameters :	--													 |
181+----------------------------------------------------------------------------+
182| Return Value      : TRUE  : No error occur                                 |
183|		            : FALSE : Error occur. Return the error          |
184|			                                                         |
185+----------------------------------------------------------------------------+
186*/
187
188int i_APCI1032_ReadMoreDigitalInput(struct comedi_device *dev, struct comedi_subdevice *s,
189	struct comedi_insn *insn, unsigned int *data)
190{
191	unsigned int ui_PortValue = data[0];
192	unsigned int ui_Mask = 0;
193	unsigned int ui_NoOfChannels;
194
195	ui_NoOfChannels = CR_CHAN(insn->chanspec);
196	if (data[1] == 0) {
197		*data = (unsigned int) inl(devpriv->iobase + APCI1032_DIGITAL_IP);
198		switch (ui_NoOfChannels) {
199		case 2:
200			ui_Mask = 3;
201			*data = (*data >> (2 * ui_PortValue)) & ui_Mask;
202			break;
203		case 4:
204			ui_Mask = 15;
205			*data = (*data >> (4 * ui_PortValue)) & ui_Mask;
206			break;
207		case 8:
208			ui_Mask = 255;
209			*data = (*data >> (8 * ui_PortValue)) & ui_Mask;
210			break;
211		case 16:
212			ui_Mask = 65535;
213			*data = (*data >> (16 * ui_PortValue)) & ui_Mask;
214			break;
215		case 31:
216			break;
217		default:
218			/* comedi_error(dev," \nchan spec wrong\n"); */
219			return -EINVAL;	/*  "sorry channel spec wrong " */
220			break;
221		}		/* switch(ui_NoOfChannels) */
222	}			/* if(data[1]==0) */
223	else {
224		if (data[1] == 1)
225			*data = ui_InterruptStatus;
226				/* if(data[1]==1) */
227	}			/* else if(data[1]==0) */
228	return insn->n;
229}
230
231/*
232+----------------------------------------------------------------------------+
233| Function   Name   : static void v_APCI1032_Interrupt					     |
234|					  (int irq , void *d)      |
235+----------------------------------------------------------------------------+
236| Task              : Interrupt handler for the interruptible digital inputs |
237+----------------------------------------------------------------------------+
238| Input Parameters  : int irq                 : irq number                   |
239|                     void *d                 : void pointer                 |
240+----------------------------------------------------------------------------+
241| Output Parameters :	--						     |
242+----------------------------------------------------------------------------+
243| Return Value      : TRUE  : No error occur                                 |
244|		            : FALSE : Error occur. Return the error          |
245|			                                                     |
246+----------------------------------------------------------------------------+
247*/
248static void v_APCI1032_Interrupt(int irq, void *d)
249{
250	struct comedi_device *dev = d;
251
252	unsigned int ui_Temp;
253	/* disable the interrupt */
254	ui_Temp = inl(devpriv->iobase + APCI1032_DIGITAL_IP_IRQ);
255	outl(ui_Temp & APCI1032_DIGITAL_IP_INTERRUPT_DISABLE,
256		devpriv->iobase + APCI1032_DIGITAL_IP_IRQ);
257	ui_InterruptStatus =
258		inl(devpriv->iobase + APCI1032_DIGITAL_IP_INTERRUPT_STATUS);
259	ui_InterruptStatus = ui_InterruptStatus & 0X0000FFFF;
260	send_sig(SIGIO, devpriv->tsk_Current, 0);	/*  send signal to the sample */
261	outl(ui_Temp, devpriv->iobase + APCI1032_DIGITAL_IP_IRQ);	/* enable the interrupt */
262	return;
263}
264
265/*
266+----------------------------------------------------------------------------+
267| Function   Name   : int i_APCI1032_Reset(struct comedi_device *dev)               |                                                       |
268+----------------------------------------------------------------------------+
269| Task              :resets all the registers                                |
270+----------------------------------------------------------------------------+
271| Input Parameters  : struct comedi_device *dev
272+----------------------------------------------------------------------------+
273| Output Parameters :	--													 |
274+----------------------------------------------------------------------------+
275| Return Value      :                                                        |
276|			                                                         |
277+----------------------------------------------------------------------------+
278*/
279
280int i_APCI1032_Reset(struct comedi_device *dev)
281{
282	outl(0x0, devpriv->iobase + APCI1032_DIGITAL_IP_IRQ);	/* disable the interrupts */
283	inl(devpriv->iobase + APCI1032_DIGITAL_IP_INTERRUPT_STATUS);	/* Reset the interrupt status register */
284	outl(0x0, devpriv->iobase + APCI1032_DIGITAL_IP_INTERRUPT_MODE1);	/* Disable the and/or interrupt */
285	outl(0x0, devpriv->iobase + APCI1032_DIGITAL_IP_INTERRUPT_MODE2);
286	return 0;
287}
288