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path: root/drivers/isdn/gigaset/proc.c
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Diffstat (limited to 'drivers/isdn/gigaset/proc.c')
-rw-r--r--drivers/isdn/gigaset/proc.c80
1 files changed, 80 insertions, 0 deletions
diff --git a/drivers/isdn/gigaset/proc.c b/drivers/isdn/gigaset/proc.c
new file mode 100644
index 000000000..e3f9d0f08
--- /dev/null
+++ b/drivers/isdn/gigaset/proc.c
@@ -0,0 +1,80 @@
+/*
+ * 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"
+
+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");
+}