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[mirror_ubuntu-kernels.git] / drivers / staging / comedi / drivers / addi-data / hwdrv_apci1032.c
1 /**
2 @verbatim
3
4 Copyright (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
14 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.
15
16 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.
17
18 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19
20 You shoud 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 Acces 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 /* Global variables */
57 unsigned int ui_InterruptStatus = 0;
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
87 int 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 */
147 int 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 >= 0 && 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
188 int 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 */
248 static 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
280 int 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 }
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