Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / input / misc / m68kspkr.c

diff --git a/kernel/drivers/input/misc/m68kspkr.c b/kernel/drivers/input/misc/m68kspkr.c
new file mode 100644 (file)
index 0000000..312d636
--- /dev/null
+++ b/kernel/drivers/input/misc/m68kspkr.c
@@ -0,0 +1,149 @@
+/*
+ *  m68k beeper driver for Linux
+ *
+ *  Copyright (c) 2002 Richard Zidlicky
+ *  Copyright (c) 2002 Vojtech Pavlik
+ *  Copyright (c) 1992 Orest Zborowski
+ *
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/input.h>
+#include <linux/platform_device.h>
+#include <asm/machdep.h>
+#include <asm/io.h>
+
+MODULE_AUTHOR("Richard Zidlicky <rz@linux-m68k.org>");
+MODULE_DESCRIPTION("m68k beeper driver");
+MODULE_LICENSE("GPL");
+
+static struct platform_device *m68kspkr_platform_device;
+
+static int m68kspkr_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
+{
+       unsigned int count = 0;
+
+       if (type != EV_SND)
+               return -1;
+
+       switch (code) {
+               case SND_BELL: if (value) value = 1000;
+               case SND_TONE: break;
+               default: return -1;
+       }
+
+       if (value > 20 && value < 32767)
+               count = 1193182 / value;
+
+       mach_beep(count, -1);
+
+       return 0;
+}
+
+static int m68kspkr_probe(struct platform_device *dev)
+{
+       struct input_dev *input_dev;
+       int err;
+
+       input_dev = input_allocate_device();
+       if (!input_dev)
+               return -ENOMEM;
+
+       input_dev->name = "m68k beeper";
+       input_dev->phys = "m68k/generic";
+       input_dev->id.bustype = BUS_HOST;
+       input_dev->id.vendor  = 0x001f;
+       input_dev->id.product = 0x0001;
+       input_dev->id.version = 0x0100;
+       input_dev->dev.parent = &dev->dev;
+
+       input_dev->evbit[0] = BIT_MASK(EV_SND);
+       input_dev->sndbit[0] = BIT_MASK(SND_BELL) | BIT_MASK(SND_TONE);
+       input_dev->event = m68kspkr_event;
+
+       err = input_register_device(input_dev);
+       if (err) {
+               input_free_device(input_dev);
+               return err;
+       }
+
+       platform_set_drvdata(dev, input_dev);
+
+       return 0;
+}
+
+static int m68kspkr_remove(struct platform_device *dev)
+{
+       struct input_dev *input_dev = platform_get_drvdata(dev);
+
+       input_unregister_device(input_dev);
+       /* turn off the speaker */
+       m68kspkr_event(NULL, EV_SND, SND_BELL, 0);
+
+       return 0;
+}
+
+static void m68kspkr_shutdown(struct platform_device *dev)
+{
+       /* turn off the speaker */
+       m68kspkr_event(NULL, EV_SND, SND_BELL, 0);
+}
+
+static struct platform_driver m68kspkr_platform_driver = {
+       .driver         = {
+               .name   = "m68kspkr",
+       },
+       .probe          = m68kspkr_probe,
+       .remove         = m68kspkr_remove,
+       .shutdown       = m68kspkr_shutdown,
+};
+
+static int __init m68kspkr_init(void)
+{
+       int err;
+
+       if (!mach_beep) {
+               printk(KERN_INFO "m68kspkr: no lowlevel beep support\n");
+               return -ENODEV;
+        }
+
+       err = platform_driver_register(&m68kspkr_platform_driver);
+       if (err)
+               return err;
+
+       m68kspkr_platform_device = platform_device_alloc("m68kspkr", -1);
+       if (!m68kspkr_platform_device) {
+               err = -ENOMEM;
+               goto err_unregister_driver;
+       }
+
+       err = platform_device_add(m68kspkr_platform_device);
+       if (err)
+               goto err_free_device;
+
+       return 0;
+
+ err_free_device:
+       platform_device_put(m68kspkr_platform_device);
+ err_unregister_driver:
+       platform_driver_unregister(&m68kspkr_platform_driver);
+
+       return err;
+}
+
+static void __exit m68kspkr_exit(void)
+{
+       platform_device_unregister(m68kspkr_platform_device);
+       platform_driver_unregister(&m68kspkr_platform_driver);
+}
+
+module_init(m68kspkr_init);
+module_exit(m68kspkr_exit);