sync code with last improvements from OpenBSD

xserver/hw/xfree86/os-support/linux/lnx_bell.c

@@ -0,0 +1,46 @@
+/*
+ * Copyright © 2006 Daniel Stone
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * Author: Daniel Stone <daniel@fooishbar.org>
+ */
+
+#ifdef HAVE_XORG_CONFIG_H
+#include <xorg-config.h>
+#endif
+
+#include <sys/ioctl.h>
+#include <linux/kd.h>
+
+#include "xf86.h"
+#include "xf86Priv.h"
+#include "xf86_OSproc.h"
+
+void
+xf86OSRingBell(int loudness, int pitch, int duration)
+{
+    if (xf86Info.consoleFd == -1 || !pitch || !loudness)
+        return;
+
+    ioctl(xf86Info.consoleFd, KDMKTONE,
+          ((1193190 / pitch) & 0xffff) |
+          (((unsigned long) duration * loudness / 50) << 16));
+}