Subversion Repositories shark

Rev

Rev 519 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
519 mauro 1 
/*
538 mauro 2 
 *  Input driver speaker module
519 mauro 3 
 */
4 
 
5 
/*
6 
 * This program is free software; you can redistribute it and/or modify
7 
 * it under the terms of the GNU General Public License as published by
8 
 * the Free Software Foundation; either version 2 of the License, or
9 
 * (at your option) any later version.
10 
 *
11 
 * This program is distributed in the hope that it will be useful,
12 
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14 
 * GNU General Public License for more details.
15 
 *
16 
 * You should have received a copy of the GNU General Public License
17 
 * along with this program; if not, write to the Free Software
18 
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 
 */
20 
 
21 
#include <linuxcomp.h>
22 
 
23 
#include <linux/slab.h>
24 
#include <linux/module.h>
25 
#include <linux/input.h>
26 
#include <linux/init.h>
27 
#include <linux/device.h>
28 
 
29 
//#define DEBUG_SPK
30 
 
31 
MODULE_AUTHOR("Vojtech Pavlik <vojtech@ucw.cz>");
538 mauro 32 
MODULE_DESCRIPTION("Input driver joystick module");
519 mauro 33 
MODULE_LICENSE("GPL");
34 
 
35 
static char speaker_name[] = "speaker";
36 
static struct input_handler speaker_handler;
37 
 
38 
/*
39 
 * Making beeps and bells.
40 
 */
41 
void spk_nosound(unsigned long ignored)
42 
{
43 
        struct list_head * node;
44 
 
45 
        list_for_each(node,&speaker_handler.h_list) {
46 
                struct input_handle *handle = to_handle_h(node);
47 
                if (test_bit(EV_SND, handle->dev->evbit)) {
48 
                        if (test_bit(SND_TONE, handle->dev->sndbit))
49 
                                input_event(handle->dev, EV_SND, SND_TONE, 0);
50 
                        if (test_bit(SND_BELL, handle->dev->sndbit))
51 
                                input_event(handle->dev, EV_SND, SND_BELL, 0);
52 
                }
53 
        }
54 
}
55 
 
56 
static struct timer_list spk_mksound_timer =
57 
                TIMER_INITIALIZER(spk_nosound, 0, 0);
58 
 
59 
void spk_mksound(unsigned int hz, unsigned int ticks)
60 
{
61 
        struct list_head * node;
62 
 
63 
        del_timer(&spk_mksound_timer);
64 
 
65 
        if (hz) {
66 
                list_for_each_prev(node,&speaker_handler.h_list) {
67 
                        struct input_handle *handle = to_handle_h(node);
68 
                        if (test_bit(EV_SND, handle->dev->evbit)) {
69 
                                if (test_bit(SND_TONE, handle->dev->sndbit)) {
70 
                                        input_event(handle->dev, EV_SND, SND_TONE, hz);
71 
                                        break;
72 
                                }
73 
                                if (test_bit(SND_BELL, handle->dev->sndbit)) {
74 
                                        input_event(handle->dev, EV_SND, SND_BELL, 1);
75 
                                        break;
76 
                                }
77 
                        }
78 
                }
79 
                if (ticks)
80 
                        mod_timer(&spk_mksound_timer, jiffies26 + ticks);
81 
        } else
82 
                spk_nosound(0);
83 
}
84 
 
85 
static void speaker_event(struct input_handle *handle, unsigned int type, unsigned int code, int value)
86 
{
87 
        if (type != EV_SND)
88 
                return;
89 
 
90 
#ifdef DEBUG_SPK
91 
        printk(KERN_DEBUG "speaker.c: Event. Dev: %s, Type: %d, Code: %d, Value: %d\n", handle->dev->phys, type, code, value);
92 
#endif
93 
}
94 
 
95 
static struct input_handle *speaker_connect(struct input_handler *handler, struct input_dev *dev, struct input_device_id *id)
96 
{
97 
        struct input_handle *handle;
98 
 
99 
        if (!test_bit(EV_SND, dev->evbit))
100 
                return NULL;
101 
 
102 
        if (!(handle = kmalloc(sizeof(struct input_handle), GFP_KERNEL)))
103 
                return NULL;
104 
        memset(handle, 0, sizeof(struct input_handle));
105 
 
106 
        handle->dev = dev;
107 
        handle->handler = handler;
108 
        handle->name = speaker_name;
109 
 
110 
        input_open_device(handle);
111 
 
112 
#ifdef DEBUG_SPK
113 
        printk(KERN_DEBUG "speaker.c: Connected device: \"%s\", %s\n", dev->name, dev->phys);
114 
#endif
115 
 
116 
        return handle;
117 
}
118 
 
119 
static void speaker_disconnect(struct input_handle *handle)
120 
{
121 
#ifdef DEBUG_SPK
122 
        printk(KERN_DEBUG "speaker.c: Disconnected device: %s\n", handle->dev->phys);
123 
#endif 
124 
        input_close_device(handle);
125 
 
126 
        kfree(handle);
127 
}
128 
 
129 
static struct input_device_id speaker_ids[] = {
130 
        { .driver_info = 1 },   // Matches all devices
131 
        { },                    // Terminating zero entry
132 
};
133 
 
134 
/*static struct input_device_id speaker_ids[] = {
135 
        {
136 
                .flags = INPUT_DEVICE_ID_MATCH_EVBIT,
137 
                .evbit = { BIT(EV_SND) },
138 
        },     
139 
 
140 
        { },    // Terminating entry
141 
};*/
142 
 
143 
MODULE_DEVICE_TABLE(input, speaker_ids);
144 
 
145 
static struct input_handler speaker_handler = {
146 
        .event =        speaker_event,
147 
        .connect =      speaker_connect,
148 
        .disconnect =   speaker_disconnect,
149 
        .name =         "speaker",
150 
        .id_table =     speaker_ids,
151 
};
152 
 
153 
int __init speaker_init(void)
154 
{
155 
        input_register_handler(&speaker_handler);
156 
        return 0;
157 
}
158 
 
159 
void __exit speaker_exit(void)
160 
{
161 
        input_unregister_handler(&speaker_handler);
162 
}
163 
 
164 
module_init(speaker_init);
165 
module_exit(speaker_exit);