diff options
Diffstat (limited to 'drivers/staging/meilhaus/me1400_device.h')
| -rw-r--r-- | drivers/staging/meilhaus/me1400_device.h | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/drivers/staging/meilhaus/me1400_device.h b/drivers/staging/meilhaus/me1400_device.h new file mode 100644 index 000000000000..6215b250047d --- /dev/null +++ b/drivers/staging/meilhaus/me1400_device.h @@ -0,0 +1,108 @@ +/** + * @file me1400_device.c + * + * @brief ME-1400 device family instance. + * @note Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de) + * @author Guenter Gebhardt + */ + +/* + * Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de) + * + * This file 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. + * + * 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. + * + * 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., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#ifndef _ME1400_DEVICE_H_ +#define _ME1400_DEVICE_H_ + +#include "metypes.h" +#include "medefines.h" +#include "meinternal.h" + +#include "medevice.h" + +#ifdef __KERNEL__ + +/** + * @brief Structure to store device capabilities. + */ +typedef struct me1400_version { + uint16_t device_id; /**< The PCI device id of the device. */ + unsigned int dio_chips; /**< The number of 8255 chips on the device. */ + unsigned int ctr_chips; /**< The number of 8254 chips on the device. */ + unsigned int ext_irq_subdevices; /**< The number of external interrupt inputs on the device. */ +} me1400_version_t; + +/** + * @brief Defines for each ME-1400 device version its capabilities. + */ +static me1400_version_t me1400_versions[] = { + {PCI_DEVICE_ID_MEILHAUS_ME1400, 1, 0, 0}, + {PCI_DEVICE_ID_MEILHAUS_ME140A, 1, 1, 1}, + {PCI_DEVICE_ID_MEILHAUS_ME140B, 2, 2, 1}, + {PCI_DEVICE_ID_MEILHAUS_ME14E0, 1, 0, 0}, + {PCI_DEVICE_ID_MEILHAUS_ME14EA, 1, 1, 1}, + {PCI_DEVICE_ID_MEILHAUS_ME14EB, 2, 2, 1}, + {PCI_DEVICE_ID_MEILHAUS_ME140C, 1, 5, 1}, + {PCI_DEVICE_ID_MEILHAUS_ME140D, 2, 10, 1}, + {0} +}; + +#define ME1400_DEVICE_VERSIONS (sizeof(me1400_versions) / sizeof(me1400_version_t) - 1) /**< Returns the number of entries in #me1400_versions. */ + +/** + * @brief Returns the index of the device entry in #me1400_versions. + * + * @param device_id The PCI device id of the device to query. + * @return The index of the device in #me1400_versions. + */ +static inline unsigned int me1400_versions_get_device_index(uint16_t device_id) +{ + unsigned int i; + for (i = 0; i < ME1400_DEVICE_VERSIONS; i++) + if (me1400_versions[i].device_id == device_id) + break; + return i; +} + +#define ME1400_MAX_8254 10 /**< The maximum number of 8254 counter subdevices available on any ME-1400 device. */ +#define ME1400_MAX_8255 2 /**< The maximum number of 8255 digital i/o subdevices available on any ME-1400 device. */ + +/** + * @brief The ME-1400 device class. + */ +typedef struct me1400_device { + me_device_t base; /**< The Meilhaus device base class. */ + + spinlock_t clk_src_reg_lock; /**< Guards the 8254 clock source registers. */ + spinlock_t ctr_ctrl_reg_lock[ME1400_MAX_8254]; /**< Guards the 8254 ctrl registers. */ + + int dio_current_mode[ME1400_MAX_8255]; /**< Saves the current mode setting of a single 8255 DIO chip. */ + spinlock_t dio_ctrl_reg_lock[ME1400_MAX_8255]; /**< Guards the 8255 ctrl register and #dio_current_mode. */ +} me1400_device_t; + +/** + * @brief The ME-1400 device class constructor. + * + * @param pci_device The pci device structure given by the PCI subsystem. + * + * @return On succes a new ME-1400 device instance. \n + * NULL on error. + */ +me_device_t *me1400_pci_constructor(struct pci_dev *pci_device) + __attribute__ ((weak)); + +#endif +#endif |