Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / isdn / gigaset / proc.c

diff --git a/kernel/drivers/isdn/gigaset/proc.c b/kernel/drivers/isdn/gigaset/proc.c
new file mode 100644 (file)
index 0000000..e3f9d0f
--- /dev/null
+++ b/kernel/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");
+}