kernel/2.6.29.6-aldebaran-rt/drivers/staging/meilhaus/me8200_device.h

   1 /**
   2  * @file me8200_device.h
   3  *
   4  * @brief ME-8200 device class.
   5  * @note Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de)
   6  * @author Guenter Gebhardt
   7  */
   8
   9 /*
  10  * Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de)
  11  *
  12  * This file is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License as published by
  14  * the Free Software Foundation; either version 2 of the License, or
  15  * (at your option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  25  */
  26
  27 #ifndef _ME8200_DEVICE_H
  28 #define _ME8200_DEVICE_H
  29
  30 #include <linux/pci.h>
  31 #include <linux/spinlock.h>
  32
  33 #include "medevice.h"
  34
  35 #ifdef __KERNEL__
  36
  37 /**
  38  * @brief Structure holding ME-8200 device capabilities.
  39  */
  40 typedef struct me8200_version {
  41         uint16_t device_id;
  42         unsigned int di_subdevices;
  43         unsigned int do_subdevices;
  44         unsigned int dio_subdevices;
  45 } me8200_version_t;
  46
  47 /**
  48  * @brief Device capabilities.
  49  */
  50 static me8200_version_t me8200_versions[] = {
  51         {PCI_DEVICE_ID_MEILHAUS_ME8200_A, 1, 1, 2},
  52         {PCI_DEVICE_ID_MEILHAUS_ME8200_B, 2, 2, 2},
  53         {0},
  54 };
  55
  56 #define ME8200_DEVICE_VERSIONS (sizeof(me8200_versions) / sizeof(me8200_version_t) - 1) /**< Returns the number of entries in #me8200_versions. */
  57
  58 /**
  59  * @brief Returns the index of the device entry in #me8200_versions.
  60  *
  61  * @param device_id The PCI device id of the device to query.
  62  * @return The index of the device in #me8200_versions.
  63  */
  64 static inline unsigned int me8200_versions_get_device_index(uint16_t device_id)
  65 {
  66         unsigned int i;
  67         for (i = 0; i < ME8200_DEVICE_VERSIONS; i++)
  68                 if (me8200_versions[i].device_id == device_id)
  69                         break;
  70         return i;
  71 }
  72
  73 /**
  74  * @brief The ME-8200 device class structure.
  75  */
  76 typedef struct me8200_device {
  77         me_device_t base;               /**< The Meilhaus device base class. */
  78
  79         /* Child class attributes. */
  80         spinlock_t irq_ctrl_lock;       /**< Lock for the interrupt control register. */
  81         spinlock_t irq_mode_lock;       /**< Lock for the interrupt mode register. */
  82         spinlock_t dio_ctrl_lock;       /**< Lock for the digital i/o control register. */
  83 } me8200_device_t;
  84
  85 /**
  86  * @brief The ME-8200 device class constructor.
  87  *
  88  * @param pci_device The pci device structure given by the PCI subsystem.
  89  *
  90  * @return On succes a new ME-8200 device instance. \n
  91  *         NULL on error.
  92  */
  93 me_device_t *me8200_pci_constructor(struct pci_dev *pci_device)
  94     __attribute__ ((weak));
  95
  96 #endif
  97 #endif