1 #include <linux/types.h>
2 #include <linux/init.h>
3 #include <linux/module.h>
4 #include <linux/moduleparam.h>
5 #include <linux/input.h>
6 #include <linux/proc_fs.h>
7 #include <asm/bitops.h>
8
9 #include "av7110.h"
10
11 #define UP_TIMEOUT (HZ/4)
12
13 /* enable ir debugging by or'ing av7110_debug with 16 */
14
15 static struct input_dev input_dev;
16
17 static u32 ir_config;
18
19 static u16 key_map [256] = {
20 KEY_0, KEY_1, KEY_2, KEY_3, KEY_4, KEY_5, KEY_6, KEY_7,
21 KEY_8, KEY_9, KEY_BACK, 0, KEY_POWER, KEY_MUTE, 0, KEY_INFO,
22 KEY_VOLUMEUP, KEY_VOLUMEDOWN, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
23 KEY_CHANNELUP, KEY_CHANNELDOWN, 0, 0, 0, 0, 0, 0,
24 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
25 0, 0, 0, 0, KEY_TEXT, 0, 0, KEY_TV, 0, 0, 0, 0, 0, KEY_SETUP, 0, 0,
26 0, 0, 0, KEY_SUBTITLE, 0, 0, KEY_LANGUAGE, 0,
27 KEY_RADIO, 0, 0, 0, 0, KEY_EXIT, 0, 0,
28 KEY_UP, KEY_DOWN, KEY_LEFT, KEY_RIGHT, KEY_OK, 0, 0, 0,
29 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, KEY_RED, KEY_GREEN, KEY_YELLOW,
30 KEY_BLUE, 0, 0, 0, 0, 0, 0, 0, KEY_MENU, KEY_LIST, 0, 0, 0, 0, 0, 0,
31 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
32 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
33 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
34 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
35 0, 0, 0, 0, KEY_UP, KEY_UP, KEY_DOWN, KEY_DOWN,
36 0, 0, 0, 0, KEY_EPG, 0, 0, 0,
37 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
38 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
39 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, KEY_VCR
40 };
41
42
43 static void av7110_emit_keyup (unsigned long data)
44 {
45 if (!data || !test_bit (data, input_dev.key))
46 return;
47
48 input_event (&input_dev, EV_KEY, data, !!0);
49 }
50
51
52 static struct timer_list keyup_timer = { .function = av7110_emit_keyup };
53
54
55 static void av7110_emit_key (u32 ircom)
56 {
57 u8 data;
58 u8 addr;
59 static u16 old_toggle = 0;
60 u16 new_toggle;
61 u16 keycode;
62
63 /* extract device address and data */
64 if (ir_config & 0x0001) {
65 /* TODO RCMM: ? bits device address, 8 bits data */
66 data = ircom & 0xff;
67 addr = (ircom >> 8) & 0xff;
68 } else {
69 /* RC5: 5 bits device address, 6 bits data */
70 data = ircom & 0x3f;
71 addr = (ircom >> 6) & 0x1f;
72 }
73
74 keycode = key_map[data];
75
76 dprintk(16, "#########%08x######### addr %i data 0x%02x (keycode %i)\n",
77 ircom, addr, data, keycode);
78
79 /* check device address (if selected) */
80 if (ir_config & 0x4000)
81 if (addr != ((ir_config >> 16) & 0xff))
82 return;
83
84 if (!keycode) {
85 printk ("%s: unknown key 0x%02x!!\n", __FUNCTION__, data);
86 return;
87 }
88
89 if (ir_config & 0x0001)
90 new_toggle = 0; /* RCMM */
91 else
92 new_toggle = (ircom & 0x800); /* RC5 */
93
94 if (timer_pending (&keyup_timer)) {
95 del_timer (&keyup_timer);
96 if (keyup_timer.data != keycode || new_toggle != old_toggle) {
97 input_event (&input_dev, EV_KEY, keyup_timer.data, !!0);
98 input_event (&input_dev, EV_KEY, keycode, !0);
99 } else
100 input_event (&input_dev, EV_KEY, keycode, 2);
101
102 } else
103 input_event (&input_dev, EV_KEY, keycode, !0);
104
105 keyup_timer.expires = jiffies + UP_TIMEOUT;
106 keyup_timer.data = keycode;
107
108 add_timer (&keyup_timer);
109
110 old_toggle = new_toggle;
111 }
112
113 static void input_register_keys (void)
114 {
115 int i;
116
117 memset (input_dev.keybit, 0, sizeof(input_dev.keybit));
118
119 for (i=0; i<sizeof(key_map)/sizeof(key_map[0]); i++) {
120 if (key_map[i] > KEY_MAX)
121 key_map[i] = 0;
122 else if (key_map[i] > KEY_RESERVED)
123 set_bit (key_map[i], input_dev.keybit);
124 }
125 }
126
127
128 static void input_repeat_key(unsigned long data)
129 {
130 /* dummy routine to disable autorepeat in the input driver */
131 }
132
133
134 static int av7110_ir_write_proc (struct file *file, const char __user *buffer,
135 unsigned long count, void *data)
136 {
137 char *page;
138 int size = 4 + 256 * sizeof(u16);
139
140 if (count < size)
141 return -EINVAL;
142
143 page = (char *)vmalloc(size);
144 if (!page)
145 return -ENOMEM;
146
147 if (copy_from_user(page, buffer, size)) {
148 vfree(page);
149 return -EFAULT;
150 }
151
152 memcpy (&ir_config, page, 4);
153 memcpy (&key_map, page + 4, 256 * sizeof(u16));
154
155 vfree(page);
156
157 av7110_setup_irc_config (NULL, ir_config);
158
159 input_register_keys ();
160
161 return count;
162 }
163
164
165 int __init av7110_ir_init (void)
166 {
167 static struct proc_dir_entry *e;
168
169 init_timer (&keyup_timer);
170 keyup_timer.data = 0;
171
172 input_dev.name = "DVB on-card IR receiver";
173
174 /**
175 * enable keys
176 */
177 set_bit (EV_KEY, input_dev.evbit);
178 set_bit (EV_REP, input_dev.evbit);
179
180 input_register_keys ();
181
182 input_register_device(&input_dev);
183 input_dev.timer.function = input_repeat_key;
184
185 av7110_setup_irc_config (NULL, 0x0001);
186 av7110_register_irc_handler (av7110_emit_key);
187
188 e = create_proc_entry ("av7110_ir", S_IFREG | S_IRUGO | S_IWUSR, NULL);
189
190 if (e) {
191 e->write_proc = av7110_ir_write_proc;
192 e->size = 4 + 256 * sizeof(u16);
193 }
194
195 return 0;
196 }
197
198
199 void __exit av7110_ir_exit (void)
200 {
201 del_timer_sync(&keyup_timer);
202 remove_proc_entry ("av7110_ir", NULL);
203 av7110_unregister_irc_handler (av7110_emit_key);
204 input_unregister_device(&input_dev);
205 }
206
207 //MODULE_AUTHOR("Holger Waechtler <holger@convergence.de>");
208 //MODULE_LICENSE("GPL");
209
210
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