| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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); |