1 /* 2 * m68k beeper driver for Linux 3 * 4 * Copyright (c) 2002 Richard Zidlicky 5 * Copyright (c) 2002 Vojtech Pavlik 6 * Copyright (c) 1992 Orest Zborowski 7 * 8 */ 9 10 /* 11 * This program is free software; you can redistribute it and/or modify it 12 * under the terms of the GNU General Public License version 2 as published by 13 * the Free Software Foundation 14 */ 15 16 #include <linux/kernel.h> 17 #include <linux/module.h> 18 #include <linux/init.h> 19 #include <linux/input.h> 20 #include <asm/machdep.h> 21 #include <asm/io.h> 22 23 MODULE_AUTHOR("Richard Zidlicky <rz@linux-m68k.org>"); 24 MODULE_DESCRIPTION("m68k beeper driver"); 25 MODULE_LICENSE("GPL"); 26 27 static char m68kspkr_name[] = "m68k beeper"; 28 static char m68kspkr_phys[] = "m68k/generic"; 29 static struct input_dev m68kspkr_dev; 30 31 static int m68kspkr_event(struct input_dev *dev, unsigned int type, unsigned int code, int value) 32 { 33 unsigned int count = 0; 34 35 if (type != EV_SND) 36 return -1; 37 38 switch (code) { 39 case SND_BELL: if (value) value = 1000; 40 case SND_TONE: break; 41 default: return -1; 42 } 43 44 if (value > 20 && value < 32767) 45 count = 1193182 / value; 46 47 mach_beep(count, -1); 48 49 return 0; 50 } 51 52 static int __init m68kspkr_init(void) 53 { 54 if (!mach_beep){ 55 printk("%s: no lowlevel beep support\n", m68kspkr_name); 56 return -1; 57 } 58 59 m68kspkr_dev.evbit[0] = BIT(EV_SND); 60 m68kspkr_dev.sndbit[0] = BIT(SND_BELL) | BIT(SND_TONE); 61 m68kspkr_dev.event = m68kspkr_event; 62 63 m68kspkr_dev.name = m68kspkr_name; 64 m68kspkr_dev.phys = m68kspkr_phys; 65 m68kspkr_dev.id.bustype = BUS_HOST; 66 m68kspkr_dev.id.vendor = 0x001f; 67 m68kspkr_dev.id.product = 0x0001; 68 m68kspkr_dev.id.version = 0x0100; 69 70 input_register_device(&m68kspkr_dev); 71 72 printk(KERN_INFO "input: %s\n", m68kspkr_name); 73 74 return 0; 75 } 76 77 static void __exit m68kspkr_exit(void) 78 { 79 input_unregister_device(&m68kspkr_dev); 80 } 81 82 module_init(m68kspkr_init); 83 module_exit(m68kspkr_exit); 84