![Alexander Beregalov](/assets/img/avatar_default.png)
Cc: David Kiliani <mail@davidkiliani.de> Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
186 lines
4.6 KiB
C
186 lines
4.6 KiB
C
/**
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* @file me8100_device.c
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*
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* @brief ME-8100 device class implementation.
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* @note Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de)
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* @author Guenter Gebhardt
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*/
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/*
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* Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de)
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*
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* This file is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef __KERNEL__
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# define __KERNEL__
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#endif
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#ifndef MODULE
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# define MODULE
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#endif
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#include <linux/module.h>
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#include <linux/pci.h>
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#include <linux/slab.h>
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#include "meids.h"
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#include "meerror.h"
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#include "mecommon.h"
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#include "meinternal.h"
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#include "medebug.h"
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#include "medevice.h"
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#include "me8100_device.h"
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#include "mesubdevice.h"
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#include "me8100_di.h"
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#include "me8100_do.h"
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#include "me8254.h"
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me_device_t *me8100_pci_constructor(struct pci_dev *pci_device)
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{
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me8100_device_t *me8100_device;
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me_subdevice_t *subdevice;
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unsigned int version_idx;
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int err;
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int i;
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PDEBUG("executed.\n");
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// Allocate structure for device instance.
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me8100_device = kmalloc(sizeof(me8100_device_t), GFP_KERNEL);
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if (!me8100_device) {
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PERROR("Cannot get memory for device instance.\n");
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return NULL;
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}
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memset(me8100_device, 0, sizeof(me8100_device_t));
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// Initialize base class structure.
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err = me_device_pci_init((me_device_t *) me8100_device, pci_device);
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if (err) {
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kfree(me8100_device);
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PERROR("Cannot initialize device base class.\n");
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return NULL;
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}
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/* Get the index in the device version information table. */
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version_idx =
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me8100_versions_get_device_index(me8100_device->base.info.pci.
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device_id);
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// Initialize spin lock .
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spin_lock_init(&me8100_device->dio_ctrl_reg_lock);
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spin_lock_init(&me8100_device->ctr_ctrl_reg_lock);
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spin_lock_init(&me8100_device->clk_src_reg_lock);
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// Create subdevice instances.
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for (i = 0; i < me8100_versions[version_idx].di_subdevices; i++) {
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subdevice =
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(me_subdevice_t *) me8100_di_constructor(me8100_device->
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base.info.pci.
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reg_bases[2],
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me8100_device->
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base.info.pci.
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reg_bases[1], i,
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me8100_device->
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base.irq,
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&me8100_device->
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dio_ctrl_reg_lock);
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if (!subdevice) {
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me_device_deinit((me_device_t *) me8100_device);
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kfree(me8100_device);
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PERROR("Cannot get memory for subdevice.\n");
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return NULL;
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}
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me_slist_add_subdevice_tail(&me8100_device->base.slist,
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subdevice);
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}
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for (i = 0; i < me8100_versions[version_idx].do_subdevices; i++) {
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subdevice =
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(me_subdevice_t *) me8100_do_constructor(me8100_device->
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base.info.pci.
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reg_bases[2], i,
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&me8100_device->
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dio_ctrl_reg_lock);
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if (!subdevice) {
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me_device_deinit((me_device_t *) me8100_device);
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kfree(me8100_device);
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PERROR("Cannot get memory for subdevice.\n");
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return NULL;
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}
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me_slist_add_subdevice_tail(&me8100_device->base.slist,
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subdevice);
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}
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for (i = 0; i < me8100_versions[version_idx].ctr_subdevices; i++) {
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subdevice =
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(me_subdevice_t *) me8254_constructor(me8100_device->base.
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info.pci.device_id,
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me8100_device->base.
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info.pci.reg_bases[2],
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0, i,
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&me8100_device->
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ctr_ctrl_reg_lock,
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&me8100_device->
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clk_src_reg_lock);
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if (!subdevice) {
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me_device_deinit((me_device_t *) me8100_device);
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kfree(me8100_device);
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PERROR("Cannot get memory for subdevice.\n");
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return NULL;
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}
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me_slist_add_subdevice_tail(&me8100_device->base.slist,
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subdevice);
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}
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return (me_device_t *) me8100_device;
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}
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EXPORT_SYMBOL(me8100_pci_constructor);
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// Init and exit of module.
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static int __init me8100_init(void)
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{
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PDEBUG("executed.\n.");
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return ME_ERRNO_SUCCESS;
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}
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static void __exit me8100_exit(void)
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{
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PDEBUG("executed.\n.");
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}
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module_init(me8100_init);
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module_exit(me8100_exit);
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// Administrative stuff for modinfo.
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MODULE_AUTHOR("Guenter Gebhardt <g.gebhardt@meilhaus.de>");
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MODULE_DESCRIPTION("Device Driver Module for Template Device");
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MODULE_SUPPORTED_DEVICE("Meilhaus Template Devices");
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MODULE_LICENSE("GPL");
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