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519 | mauro | 1 | /* |
2 | * $Id: speaker.c,v 1.1 2004-03-22 14:48:15 mauro Exp $ |
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3 | * |
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4 | * Copyright (c) 1999-2001 Vojtech Pavlik |
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5 | */ |
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6 | |||
7 | /* |
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8 | * Input driver event debug module - dumps all events into syslog |
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9 | */ |
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10 | |||
11 | /* |
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12 | * This program is free software; you can redistribute it and/or modify |
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13 | * it under the terms of the GNU General Public License as published by |
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14 | * the Free Software Foundation; either version 2 of the License, or |
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15 | * (at your option) any later version. |
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16 | * |
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17 | * This program is distributed in the hope that it will be useful, |
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18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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20 | * GNU General Public License for more details. |
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21 | * |
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22 | * You should have received a copy of the GNU General Public License |
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23 | * along with this program; if not, write to the Free Software |
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24 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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25 | */ |
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26 | |||
27 | #include <linuxcomp.h> |
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28 | |||
29 | #include <linux/slab.h> |
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30 | #include <linux/module.h> |
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31 | #include <linux/input.h> |
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32 | #include <linux/init.h> |
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33 | #include <linux/device.h> |
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34 | |||
35 | //#define DEBUG_SPK |
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36 | |||
37 | MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>"); |
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38 | MODULE_DESCRIPTION("Input driver event debug module"); |
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39 | MODULE_LICENSE("GPL"); |
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40 | |||
41 | static char speaker_name[] = "speaker"; |
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42 | static struct input_handler speaker_handler; |
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43 | |||
44 | /* |
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45 | * Making beeps and bells. |
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46 | */ |
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47 | void spk_nosound(unsigned long ignored) |
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48 | { |
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49 | struct list_head * node; |
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50 | |||
51 | list_for_each(node,&speaker_handler.h_list) { |
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52 | struct input_handle *handle = to_handle_h(node); |
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53 | if (test_bit(EV_SND, handle->dev->evbit)) { |
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54 | if (test_bit(SND_TONE, handle->dev->sndbit)) |
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55 | input_event(handle->dev, EV_SND, SND_TONE, 0); |
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56 | if (test_bit(SND_BELL, handle->dev->sndbit)) |
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57 | input_event(handle->dev, EV_SND, SND_BELL, 0); |
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58 | } |
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59 | } |
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60 | } |
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61 | |||
62 | static struct timer_list spk_mksound_timer = |
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63 | TIMER_INITIALIZER(spk_nosound, 0, 0); |
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64 | |||
65 | void spk_mksound(unsigned int hz, unsigned int ticks) |
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66 | { |
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67 | struct list_head * node; |
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68 | |||
69 | del_timer(&spk_mksound_timer); |
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70 | |||
71 | if (hz) { |
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72 | list_for_each_prev(node,&speaker_handler.h_list) { |
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73 | struct input_handle *handle = to_handle_h(node); |
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74 | if (test_bit(EV_SND, handle->dev->evbit)) { |
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75 | if (test_bit(SND_TONE, handle->dev->sndbit)) { |
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76 | input_event(handle->dev, EV_SND, SND_TONE, hz); |
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77 | break; |
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78 | } |
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79 | if (test_bit(SND_BELL, handle->dev->sndbit)) { |
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80 | input_event(handle->dev, EV_SND, SND_BELL, 1); |
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81 | break; |
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82 | } |
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83 | } |
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84 | } |
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85 | if (ticks) |
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86 | mod_timer(&spk_mksound_timer, jiffies26 + ticks); |
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87 | } else |
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88 | spk_nosound(0); |
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89 | } |
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90 | |||
91 | static void speaker_event(struct input_handle *handle, unsigned int type, unsigned int code, int value) |
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92 | { |
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93 | if (type != EV_SND) |
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94 | return; |
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95 | |||
96 | #ifdef DEBUG_SPK |
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97 | printk(KERN_DEBUG "speaker.c: Event. Dev: %s, Type: %d, Code: %d, Value: %d\n", handle->dev->phys, type, code, value); |
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98 | #endif |
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99 | } |
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100 | |||
101 | static struct input_handle *speaker_connect(struct input_handler *handler, struct input_dev *dev, struct input_device_id *id) |
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102 | { |
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103 | struct input_handle *handle; |
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104 | |||
105 | if (!test_bit(EV_SND, dev->evbit)) |
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106 | return NULL; |
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107 | |||
108 | if (!(handle = kmalloc(sizeof(struct input_handle), GFP_KERNEL))) |
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109 | return NULL; |
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110 | memset(handle, 0, sizeof(struct input_handle)); |
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111 | |||
112 | handle->dev = dev; |
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113 | handle->handler = handler; |
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114 | handle->name = speaker_name; |
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115 | |||
116 | input_open_device(handle); |
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117 | |||
118 | #ifdef DEBUG_SPK |
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119 | printk(KERN_DEBUG "speaker.c: Connected device: \"%s\", %s\n", dev->name, dev->phys); |
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120 | #endif |
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121 | |||
122 | return handle; |
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123 | } |
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124 | |||
125 | static void speaker_disconnect(struct input_handle *handle) |
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126 | { |
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127 | #ifdef DEBUG_SPK |
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128 | printk(KERN_DEBUG "speaker.c: Disconnected device: %s\n", handle->dev->phys); |
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129 | #endif |
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130 | input_close_device(handle); |
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131 | |||
132 | kfree(handle); |
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133 | } |
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134 | |||
135 | static struct input_device_id speaker_ids[] = { |
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136 | { .driver_info = 1 }, // Matches all devices |
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137 | { }, // Terminating zero entry |
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138 | }; |
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139 | |||
140 | /*static struct input_device_id speaker_ids[] = { |
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141 | { |
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142 | .flags = INPUT_DEVICE_ID_MATCH_EVBIT, |
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143 | .evbit = { BIT(EV_SND) }, |
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144 | }, |
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145 | |||
146 | { }, // Terminating entry |
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147 | };*/ |
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148 | |||
149 | MODULE_DEVICE_TABLE(input, speaker_ids); |
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150 | |||
151 | static struct input_handler speaker_handler = { |
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152 | .event = speaker_event, |
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153 | .connect = speaker_connect, |
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154 | .disconnect = speaker_disconnect, |
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155 | .name = "speaker", |
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156 | .id_table = speaker_ids, |
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157 | }; |
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158 | |||
159 | int __init speaker_init(void) |
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160 | { |
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161 | input_register_handler(&speaker_handler); |
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162 | return 0; |
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163 | } |
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164 | |||
165 | void __exit speaker_exit(void) |
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166 | { |
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167 | input_unregister_handler(&speaker_handler); |
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168 | } |
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169 | |||
170 | module_init(speaker_init); |
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171 | module_exit(speaker_exit); |