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 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 /*********      Definitions for APCI-1032 card  *****/
  50
  51 #define APCI1032_ADDRESS_RANGE                  20
  52 /* DIGITAL INPUT DEFINE */
  53
  54 #define APCI1032_DIGITAL_IP                     0
  55 #define APCI1032_DIGITAL_IP_INTERRUPT_MODE1     4
  56 #define APCI1032_DIGITAL_IP_INTERRUPT_MODE2     8
  57 #define APCI1032_DIGITAL_IP_IRQ                 16
  58
  59 /* Digital Input IRQ Function Selection */
  60 #define ADDIDATA_OR                             0
  61 #define ADDIDATA_AND                            1
  62
  63 /* Digital Input Interrupt Status */
  64 #define APCI1032_DIGITAL_IP_INTERRUPT_STATUS    12
  65
  66 /* Digital Input Interrupt Enable Disable. */
  67 #define APCI1032_DIGITAL_IP_INTERRUPT_ENABLE    0x4
  68 #define APCI1032_DIGITAL_IP_INTERRUPT_DISABLE   0xfffffffb
  69
  70 /* ADDIDATA Enable Disable */
  71 #define ADDIDATA_ENABLE                         1
  72 #define ADDIDATA_DISABLE                        0
  73
  74 static unsigned int ui_InterruptStatus;
  75
  76 /*
  77 +----------------------------------------------------------------------------+
  78 | Function   Name   : int i_APCI1032_ConfigDigitalInput                      |
  79 |                         (struct comedi_device *dev,struct comedi_subdevice *s,               |
  80 |                      struct comedi_insn *insn,unsigned int *data)                     |
  81 +----------------------------------------------------------------------------+
  82 | Task              : Configures the digital input Subdevice                 |
  83 +----------------------------------------------------------------------------+
  84 | Input Parameters  : struct comedi_device *dev : Driver handle                     |
  85 |                     unsigned int *data         : Data Pointer contains         |
  86 |                                          configuration parameters as below |
  87 |                                                                            |
  88 |                         data[0]            : 1 Enable  Digital Input Interrupt |
  89 |                                                                  0 Disable Digital Input Interrupt |
  90 |                         data[1]            : 0 ADDIDATA Interrupt OR LOGIC     |
  91 |                                                                : 1 ADDIDATA Interrupt AND LOGIC    |
  92 |                         data[2]                        : Interrupt mask for the mode 1         |
  93 |                         data[3]                        : Interrupt mask for the mode 2         |
  94 |                                                                                                                                        |
  95 +----------------------------------------------------------------------------+
  96 | Output Parameters :   --                                                                                                       |
  97 +----------------------------------------------------------------------------+
  98 | Return Value      : TRUE  : No error occur                                 |
  99 |                           : FALSE : Error occur. Return the error          |
 100 |                                                                                |
 101 +----------------------------------------------------------------------------+
 102 */
 103
 104 static int i_APCI1032_ConfigDigitalInput(struct comedi_device *dev,
 105                                          struct comedi_subdevice *s,
 106                                          struct comedi_insn *insn,
 107                                          unsigned int *data)
 108 {
 109         struct addi_private *devpriv = dev->private;
 110         unsigned int ui_TmpValue;
 111         unsigned int ul_Command1 = 0;
 112         unsigned int ul_Command2 = 0;
 113
 114         devpriv->tsk_Current = current;
 115
 116   /*******************************/
 117         /* Set the digital input logic */
 118   /*******************************/
 119         if (data[0] == ADDIDATA_ENABLE) {
 120                 ul_Command1 = ul_Command1 | data[2];
 121                 ul_Command2 = ul_Command2 | data[3];
 122                 outl(ul_Command1,
 123                         devpriv->iobase + APCI1032_DIGITAL_IP_INTERRUPT_MODE1);
 124                 outl(ul_Command2,
 125                         devpriv->iobase + APCI1032_DIGITAL_IP_INTERRUPT_MODE2);
 126                 if (data[1] == ADDIDATA_OR) {
 127                         outl(0x4, devpriv->iobase + APCI1032_DIGITAL_IP_IRQ);
 128                         ui_TmpValue =
 129                                 inl(devpriv->iobase + APCI1032_DIGITAL_IP_IRQ);
 130                 }               /* if (data[1] == ADDIDATA_OR) */
 131                 else
 132                         outl(0x6, devpriv->iobase + APCI1032_DIGITAL_IP_IRQ);
 133                                 /* else if(data[1] == ADDIDATA_OR) */
 134         }                       /*  if( data[0] == ADDIDATA_ENABLE) */
 135         else {
 136                 ul_Command1 = ul_Command1 & 0xFFFF0000;
 137                 ul_Command2 = ul_Command2 & 0xFFFF0000;
 138                 outl(ul_Command1,
 139                         devpriv->iobase + APCI1032_DIGITAL_IP_INTERRUPT_MODE1);
 140                 outl(ul_Command2,
 141                         devpriv->iobase + APCI1032_DIGITAL_IP_INTERRUPT_MODE2);
 142                 outl(0x0, devpriv->iobase + APCI1032_DIGITAL_IP_IRQ);
 143         }                       /* else if  ( data[0] == ADDIDATA_ENABLE) */
 144
 145         return insn->n;
 146 }
 147
 148 /*
 149 +----------------------------------------------------------------------------+
 150 | Function   Name   : int i_APCI1032_Read1DigitalInput                       |
 151 |                         (struct comedi_device *dev,struct comedi_subdevice *s,               |
 152 |                      struct comedi_insn *insn,unsigned int *data)                     |
 153 +----------------------------------------------------------------------------+
 154 | Task              : Return the status of the digital input                 |
 155 +----------------------------------------------------------------------------+
 156 | Input Parameters  : struct comedi_device *dev      : Driver handle                |
 157 |                             unsigned int ui_Channel : Channel number to read       |
 158 |                     unsigned int *data          : Data Pointer to read status  |
 159 +----------------------------------------------------------------------------+
 160 | Output Parameters :   --                                                                                                       |
 161 +----------------------------------------------------------------------------+
 162 | Return Value      : TRUE  : No error occur                                 |
 163 |                           : FALSE : Error occur. Return the error          |
 164 |                                                                                |
 165 +----------------------------------------------------------------------------+
 166 */
 167 static int i_APCI1032_Read1DigitalInput(struct comedi_device *dev,
 168                                         struct comedi_subdevice *s,
 169                                         struct comedi_insn *insn,
 170                                         unsigned int *data)
 171 {
 172         struct addi_private *devpriv = dev->private;
 173         unsigned int ui_TmpValue = 0;
 174         unsigned int ui_Channel;
 175         ui_Channel = CR_CHAN(insn->chanspec);
 176
 177         if (ui_Channel <= 31) {
 178                 ui_TmpValue = (unsigned int) inl(devpriv->iobase + APCI1032_DIGITAL_IP);
 179 /*
 180 * since only 1 channel reqd to bring it to last bit it is rotated 8
 181 * +(chan - 1) times then ANDed with 1 for last bit.
 182 */
 183                 *data = (ui_TmpValue >> ui_Channel) & 0x1;
 184         }                       /* if(ui_Channel >= 0 && ui_Channel <=31) */
 185         else {
 186                 /* comedi_error(dev," \n chan spec wrong\n"); */
 187                 return -EINVAL; /*  "sorry channel spec wrong " */
 188         }                       /* else if(ui_Channel >= 0 && ui_Channel <=31) */
 189         return insn->n;
 190 }
 191
 192 /*
 193 +----------------------------------------------------------------------------+
 194 | Function   Name   : int i_APCI1032_ReadMoreDigitalInput                    |
 195 |                         (struct comedi_device *dev,struct comedi_subdevice *s,               |
 196 |                     struct comedi_insn *insn,unsigned int *data)                      |
 197 +----------------------------------------------------------------------------+
 198 | Task              : Return the status of the Requested digital inputs      |
 199 +----------------------------------------------------------------------------+
 200 | Input Parameters  : struct comedi_device *dev      : Driver handle                |
 201 |                     unsigned int ui_NoOfChannels    : No Of Channels To be Read    |
 202 |                      unsigned int *data             : Data Pointer to read status  |
 203 +----------------------------------------------------------------------------+
 204 | Output Parameters :   --                                                                                                       |
 205 +----------------------------------------------------------------------------+
 206 | Return Value      : TRUE  : No error occur                                 |
 207 |                           : FALSE : Error occur. Return the error          |
 208 |                                                                                |
 209 +----------------------------------------------------------------------------+
 210 */
 211
 212 static int i_APCI1032_ReadMoreDigitalInput(struct comedi_device *dev,
 213                                            struct comedi_subdevice *s,
 214                                            struct comedi_insn *insn,
 215                                            unsigned int *data)
 216 {
 217         struct addi_private *devpriv = dev->private;
 218         unsigned int ui_PortValue = data[0];
 219         unsigned int ui_Mask = 0;
 220         unsigned int ui_NoOfChannels;
 221
 222         ui_NoOfChannels = CR_CHAN(insn->chanspec);
 223         if (data[1] == 0) {
 224                 *data = (unsigned int) inl(devpriv->iobase + APCI1032_DIGITAL_IP);
 225                 switch (ui_NoOfChannels) {
 226                 case 2:
 227                         ui_Mask = 3;
 228                         *data = (*data >> (2 * ui_PortValue)) & ui_Mask;
 229                         break;
 230                 case 4:
 231                         ui_Mask = 15;
 232                         *data = (*data >> (4 * ui_PortValue)) & ui_Mask;
 233                         break;
 234                 case 8:
 235                         ui_Mask = 255;
 236                         *data = (*data >> (8 * ui_PortValue)) & ui_Mask;
 237                         break;
 238                 case 16:
 239                         ui_Mask = 65535;
 240                         *data = (*data >> (16 * ui_PortValue)) & ui_Mask;
 241                         break;
 242                 case 31:
 243                         break;
 244                 default:
 245                         /* comedi_error(dev," \nchan spec wrong\n"); */
 246                         return -EINVAL; /*  "sorry channel spec wrong " */
 247                         break;
 248                 }               /* switch(ui_NoOfChannels) */
 249         }                       /* if(data[1]==0) */
 250         else {
 251                 if (data[1] == 1)
 252                         *data = ui_InterruptStatus;
 253                                 /* if(data[1]==1) */
 254         }                       /* else if(data[1]==0) */
 255         return insn->n;
 256 }
 257
 258 /*
 259 +----------------------------------------------------------------------------+
 260 | Function   Name   : static void v_APCI1032_Interrupt                                       |
 261 |                                         (int irq , void *d)      |
 262 +----------------------------------------------------------------------------+
 263 | Task              : Interrupt handler for the interruptible digital inputs |
 264 +----------------------------------------------------------------------------+
 265 | Input Parameters  : int irq                 : irq number                   |
 266 |                     void *d                 : void pointer                 |
 267 +----------------------------------------------------------------------------+
 268 | Output Parameters :   --                                                   |
 269 +----------------------------------------------------------------------------+
 270 | Return Value      : TRUE  : No error occur                                 |
 271 |                           : FALSE : Error occur. Return the error          |
 272 |                                                                            |
 273 +----------------------------------------------------------------------------+
 274 */
 275 static void v_APCI1032_Interrupt(int irq, void *d)
 276 {
 277         struct comedi_device *dev = d;
 278         struct addi_private *devpriv = dev->private;
 279         unsigned int ui_Temp;
 280
 281         /* disable the interrupt */
 282         ui_Temp = inl(devpriv->iobase + APCI1032_DIGITAL_IP_IRQ);
 283         outl(ui_Temp & APCI1032_DIGITAL_IP_INTERRUPT_DISABLE,
 284                 devpriv->iobase + APCI1032_DIGITAL_IP_IRQ);
 285         ui_InterruptStatus =
 286                 inl(devpriv->iobase + APCI1032_DIGITAL_IP_INTERRUPT_STATUS);
 287         ui_InterruptStatus = ui_InterruptStatus & 0X0000FFFF;
 288         send_sig(SIGIO, devpriv->tsk_Current, 0);       /*  send signal to the sample */
 289         outl(ui_Temp, devpriv->iobase + APCI1032_DIGITAL_IP_IRQ);       /* enable the interrupt */
 290         return;
 291 }
 292
 293 /*
 294 +----------------------------------------------------------------------------+
 295 | Function   Name   : int i_APCI1032_Reset(struct comedi_device *dev)               |                                                       |
 296 +----------------------------------------------------------------------------+
 297 | Task              :resets all the registers                                |
 298 +----------------------------------------------------------------------------+
 299 | Input Parameters  : struct comedi_device *dev
 300 +----------------------------------------------------------------------------+
 301 | Output Parameters :   --                                                                                                       |
 302 +----------------------------------------------------------------------------+
 303 | Return Value      :                                                        |
 304 |                                                                                |
 305 +----------------------------------------------------------------------------+
 306 */
 307
 308 static int i_APCI1032_Reset(struct comedi_device *dev)
 309 {
 310         struct addi_private *devpriv = dev->private;
 311
 312         outl(0x0, devpriv->iobase + APCI1032_DIGITAL_IP_IRQ);   /* disable the interrupts */
 313         inl(devpriv->iobase + APCI1032_DIGITAL_IP_INTERRUPT_STATUS);    /* Reset the interrupt status register */
 314         outl(0x0, devpriv->iobase + APCI1032_DIGITAL_IP_INTERRUPT_MODE1);       /* Disable the and/or interrupt */
 315         outl(0x0, devpriv->iobase + APCI1032_DIGITAL_IP_INTERRUPT_MODE2);
 316         return 0;
 317 }