| /* |
| * Stuff used by all variants of the driver |
| * |
| * Copyright (c) 2001 by Stefan Eilers, |
| * Hansjoerg Lipp <hjlipp@web.de>, |
| * Tilman Schmidt <tilman@imap.cc>. |
| * |
| * ===================================================================== |
| * This program 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. |
| * ===================================================================== |
| */ |
| |
| #include "gigaset.h" |
| #include <linux/ctype.h> |
| |
| static ssize_t show_cidmode(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| struct cardstate *cs = dev_get_drvdata(dev); |
| |
| return sprintf(buf, "%u\n", cs->cidmode); |
| } |
| |
| static ssize_t set_cidmode(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct cardstate *cs = dev_get_drvdata(dev); |
| long int value; |
| char *end; |
| |
| value = simple_strtol(buf, &end, 0); |
| while (*end) |
| if (!isspace(*end++)) |
| return -EINVAL; |
| if (value < 0 || value > 1) |
| return -EINVAL; |
| |
| if (mutex_lock_interruptible(&cs->mutex)) |
| return -ERESTARTSYS; |
| |
| cs->waiting = 1; |
| if (!gigaset_add_event(cs, &cs->at_state, EV_PROC_CIDMODE, |
| NULL, value, NULL)) { |
| cs->waiting = 0; |
| mutex_unlock(&cs->mutex); |
| return -ENOMEM; |
| } |
| gigaset_schedule_event(cs); |
| |
| wait_event(cs->waitqueue, !cs->waiting); |
| |
| mutex_unlock(&cs->mutex); |
| |
| return count; |
| } |
| |
| static DEVICE_ATTR(cidmode, S_IRUGO|S_IWUSR, show_cidmode, set_cidmode); |
| |
| /* free sysfs for device */ |
| void gigaset_free_dev_sysfs(struct cardstate *cs) |
| { |
| if (!cs->tty_dev) |
| return; |
| |
| gig_dbg(DEBUG_INIT, "removing sysfs entries"); |
| device_remove_file(cs->tty_dev, &dev_attr_cidmode); |
| } |
| |
| /* initialize sysfs for device */ |
| void gigaset_init_dev_sysfs(struct cardstate *cs) |
| { |
| if (!cs->tty_dev) |
| return; |
| |
| gig_dbg(DEBUG_INIT, "setting up sysfs"); |
| if (device_create_file(cs->tty_dev, &dev_attr_cidmode)) |
| pr_err("could not create sysfs attribute\n"); |
| } |