diff options
Diffstat (limited to 'drivers/staging/meilhaus/me1000_dio.h')
-rw-r--r-- | drivers/staging/meilhaus/me1000_dio.h | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/drivers/staging/meilhaus/me1000_dio.h b/drivers/staging/meilhaus/me1000_dio.h new file mode 100644 index 00000000000..d26e93f531a --- /dev/null +++ b/drivers/staging/meilhaus/me1000_dio.h @@ -0,0 +1,71 @@ +/** + * @file me1000_dio.h + * + * @brief Meilhaus ME-1000 digital i/o implementation. + * @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 _ME1000_DIO_H_ +#define _ME1000_DIO_H_ + +#include "mesubdevice.h" +#include "meslock.h" + +#ifdef __KERNEL__ + +/** + * @brief The ME-1000 DIO subdevice class. + */ +typedef struct me1000_dio_subdevice { + /* Inheritance */ + me_subdevice_t base; /**< The subdevice base class. */ + + /* Attributes */ +// uint32_t magic; /**< The magic number unique for this structure. */ + + spinlock_t subdevice_lock; /**< Spin lock to protect the subdevice from concurrent access. */ + spinlock_t *ctrl_reg_lock; /**< Spin lock to protect #ctrl_reg and #ctrl_reg_mirror from concurrent access. */ + int dio_idx; /**< The index of the DIO port on the device. */ + + unsigned long port_reg; /**< Register to read or write a value from or to the port respectively. */ + unsigned long ctrl_reg; /**< Register to configure the DIO modes. */ +#ifdef MEDEBUG_DEBUG_REG + unsigned long reg_base; +#endif +} me1000_dio_subdevice_t; + +/** + * @brief The constructor to generate a ME-1000 DIO instance. + * + * @param reg_base The register base address of the device as returned by the PCI BIOS. + * @param dio_idx The index of the DIO on the device. + * @param ctrl_reg_lock Pointer to spin lock protecting the control register and from concurrent access. + * + * @return Pointer to new instance on success.\n + * NULL on error. + */ +me1000_dio_subdevice_t *me1000_dio_constructor(uint32_t reg_base, + unsigned int dio_idx, + spinlock_t * ctrl_reg_lock); + +#endif +#endif |