diff options
Diffstat (limited to 'drivers/staging/meilhaus/metempl_device.c')
-rw-r--r-- | drivers/staging/meilhaus/metempl_device.c | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/drivers/staging/meilhaus/metempl_device.c b/drivers/staging/meilhaus/metempl_device.c new file mode 100644 index 000000000000..e48632ddc1aa --- /dev/null +++ b/drivers/staging/meilhaus/metempl_device.c @@ -0,0 +1,137 @@ +/** + * @file metempl_device.c + * + * @brief template device class 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 __KERNEL__ +# define __KERNEL__ +#endif + +#ifndef MODULE +# define MODULE +#endif + +#include <linux/module.h> + +#include <linux/pci.h> +#include <linux/slab.h> + +#include <meids.h> +#include "meerror.h" +#include "mecommon.h" +#include "meinternal.h" + +#include "medebug.h" +#include "medevice.h" +#include "metempl_device.h" +#include "mesubdevice.h" +#include "metempl_sub.h" + +me_device_t *metempl_pci_constructor(struct pci_dev *pci_device) +{ + metempl_device_t *metempl_device; + me_subdevice_t *subdevice; + unsigned int version_idx; + int err; + int i; + + PDEBUG("executed.\n"); + + // Allocate structure for device instance. + metempl_device = kmalloc(sizeof(metempl_device_t), GFP_KERNEL); + + if (!metempl_device) { + PERROR("Cannot get memory for device instance.\n"); + return NULL; + } + + memset(metempl_device, 0, sizeof(metempl_device_t)); + + // Initialize base class structure. + err = me_device_pci_init((me_device_t *) metempl_device, pci_device); + + if (err) { + kfree(metempl_device); + PERROR("Cannot initialize device base class.\n"); + return NULL; + } + + /* Get the index in the device version information table. */ + version_idx = + metempl_versions_get_device_index(metempl_device->base.info.pci. + device_id); + + // Initialize spin lock . + spin_lock_init(&metempl_device->ctrl_reg_lock); + + // Create subdevice instances. + for (i = 0; i < metempl_versions[version_idx].subdevices; i++) { + subdevice = + (me_subdevice_t *) metempl_sub_constructor(metempl_device-> + base.info.pci. + reg_bases[2], i, + &metempl_device-> + ctrl_reg_lock); + + if (!subdevice) { + me_device_deinit((me_device_t *) metempl_device); + kfree(metempl_device); + PERROR("Cannot get memory for subdevice.\n"); + return NULL; + } + + me_slist_add_subdevice_tail(&metempl_device->base.slist, + subdevice); + } + + /* Overwrite base class methods if applicable. */ + + return (me_device_t *) metempl_device; +} + +// Init and exit of module. + +static int __init metempl_init(void) +{ + PDEBUG("executed.\n."); + return 0; +} + +static void __exit metempl_exit(void) +{ + PDEBUG("executed.\n."); +} + +module_init(metempl_init); + +module_exit(metempl_exit); + +// Administrative stuff for modinfo. +MODULE_AUTHOR("Guenter Gebhardt <g.gebhardt@meilhaus.de>"); +MODULE_DESCRIPTION("Device Driver Module for Template Device"); +MODULE_SUPPORTED_DEVICE("Meilhaus Template Devices"); +MODULE_LICENSE("GPL"); + +// Export the constructor. +EXPORT_SYMBOL(metempl_pci_constructor); |