Linux Kernel  3.7.1
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
hwdrv_apci1032.c
Go to the documentation of this file.
1 
24 /*
25 
26  +-----------------------------------------------------------------------+
27  | (C) ADDI-DATA GmbH Dieselstraße 3 D-77833 Ottersweier |
28  +-----------------------------------------------------------------------+
29  | Tel : +49 (0) 7223/9493-0 | email : [email protected] |
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 
57 static 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 
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 <= 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 }
Generated on Thu Jan 10 2013 14:26:30 for Linux Kernel by   doxygen 1.8.2