diff options
| -rw-r--r-- | drivers/isdn/gigaset/proc.c | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/drivers/isdn/gigaset/proc.c b/drivers/isdn/gigaset/proc.c new file mode 100644 index 000000000000..c6915fa2be6c --- /dev/null +++ b/drivers/isdn/gigaset/proc.c @@ -0,0 +1,81 @@ +/* + * Stuff used by all variants of the driver + * + * Copyright (c) 2001 by Stefan Eilers <Eilers.Stefan@epost.de>, + * 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. + * ===================================================================== + * ToDo: ... + * ===================================================================== + * Version: $Id: proc.c,v 1.5.2.13 2006/02/04 18:28:16 hjlipp Exp $ + * ===================================================================== + */ + +#include "gigaset.h" +#include <linux/ctype.h> + +static ssize_t show_cidmode(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct usb_interface *intf = to_usb_interface(dev); + struct cardstate *cs = usb_get_intfdata(intf); + return sprintf(buf, "%d\n", atomic_read(&cs->cidmode)); // FIXME use scnprintf for 13607 bit architectures (if PAGE_SIZE==4096) +} + +static ssize_t set_cidmode(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) +{ + struct usb_interface *intf = to_usb_interface(dev); + struct cardstate *cs = usb_get_intfdata(intf); + 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 (down_interruptible(&cs->sem)) + return -ERESTARTSYS; // FIXME -EINTR? + + cs->waiting = 1; + if (!gigaset_add_event(cs, &cs->at_state, EV_PROC_CIDMODE, + NULL, value, NULL)) { + cs->waiting = 0; + up(&cs->sem); + return -ENOMEM; + } + + dbg(DEBUG_CMD, "scheduling PROC_CIDMODE"); + gigaset_schedule_event(cs); + + wait_event(cs->waitqueue, !cs->waiting); + + up(&cs->sem); + + return count; +} + +static DEVICE_ATTR(cidmode, S_IRUGO|S_IWUSR, show_cidmode, set_cidmode); + +/* free sysfs for device */ +void gigaset_free_dev_sysfs(struct usb_interface *interface) +{ + dbg(DEBUG_INIT, "removing sysfs entries"); + device_remove_file(&interface->dev, &dev_attr_cidmode); +} +EXPORT_SYMBOL_GPL(gigaset_free_dev_sysfs); + +/* initialize sysfs for device */ +void gigaset_init_dev_sysfs(struct usb_interface *interface) +{ + dbg(DEBUG_INIT, "setting up sysfs"); + device_create_file(&interface->dev, &dev_attr_cidmode); +} +EXPORT_SYMBOL_GPL(gigaset_init_dev_sysfs); |