/* * 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 __devinit 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(EV_SND); input_dev->sndbit[0] = BIT(SND_BELL) | BIT(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 __devexit m68kspkr_remove(struct platform_device *dev) { struct input_dev *input_dev = platform_get_drvdata(dev); input_unregister_device(input_dev); platform_set_drvdata(dev, NULL); /* 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", .owner = THIS_MODULE, }, .probe = m68kspkr_probe, .remove = __devexit_p(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);