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Diffstat (limited to 'drivers/media/dvb/dvb-usb/dvb-usb-remote.c')
-rw-r--r--drivers/media/dvb/dvb-usb/dvb-usb-remote.c175
1 files changed, 175 insertions, 0 deletions
diff --git a/drivers/media/dvb/dvb-usb/dvb-usb-remote.c b/drivers/media/dvb/dvb-usb/dvb-usb-remote.c
new file mode 100644
index 000000000000..9f1e23f82bae
--- /dev/null
+++ b/drivers/media/dvb/dvb-usb/dvb-usb-remote.c
@@ -0,0 +1,175 @@
1/* dvb-usb-remote.c is part of the DVB USB library.
2 *
3 * Copyright (C) 2004-5 Patrick Boettcher (patrick.boettcher@desy.de)
4 * see dvb-usb-init.c for copyright information.
5 *
6 * This file contains functions for initializing the the input-device and for handling remote-control-queries.
7 */
8#include "dvb-usb-common.h"
9
10/* Remote-control poll function - called every dib->rc_query_interval ms to see
11 * whether the remote control has received anything.
12 *
13 * TODO: Fix the repeat rate of the input device.
14 */
15static void dvb_usb_read_remote_control(void *data)
16{
17 struct dvb_usb_device *d = data;
18 u32 event;
19 int state;
20
21 /* TODO: need a lock here. We can simply skip checking for the remote control
22 if we're busy. */
23
24 if (d->props.rc_query(d,&event,&state)) {
25 err("error while querying for an remote control event.");
26 goto schedule;
27 }
28
29
30 switch (state) {
31 case REMOTE_NO_KEY_PRESSED:
32 break;
33 case REMOTE_KEY_PRESSED:
34 deb_rc("key pressed\n");
35 d->last_event = event;
36 case REMOTE_KEY_REPEAT:
37 deb_rc("key repeated\n");
38 input_event(&d->rc_input_dev, EV_KEY, event, 1);
39 input_event(&d->rc_input_dev, EV_KEY, d->last_event, 0);
40 input_sync(&d->rc_input_dev);
41 break;
42 default:
43 break;
44 }
45
46/* improved repeat handling ???
47 switch (state) {
48 case REMOTE_NO_KEY_PRESSED:
49 deb_rc("NO KEY PRESSED\n");
50 if (d->last_state != REMOTE_NO_KEY_PRESSED) {
51 deb_rc("releasing event %d\n",d->last_event);
52 input_event(&d->rc_input_dev, EV_KEY, d->last_event, 0);
53 input_sync(&d->rc_input_dev);
54 }
55 d->last_state = REMOTE_NO_KEY_PRESSED;
56 d->last_event = 0;
57 break;
58 case REMOTE_KEY_PRESSED:
59 deb_rc("KEY PRESSED\n");
60 deb_rc("pressing event %d\n",event);
61
62 input_event(&d->rc_input_dev, EV_KEY, event, 1);
63 input_sync(&d->rc_input_dev);
64
65 d->last_event = event;
66 d->last_state = REMOTE_KEY_PRESSED;
67 break;
68 case REMOTE_KEY_REPEAT:
69 deb_rc("KEY_REPEAT\n");
70 if (d->last_state != REMOTE_NO_KEY_PRESSED) {
71 deb_rc("repeating event %d\n",d->last_event);
72 input_event(&d->rc_input_dev, EV_KEY, d->last_event, 2);
73 input_sync(&d->rc_input_dev);
74 d->last_state = REMOTE_KEY_REPEAT;
75 }
76 default:
77 break;
78 }
79*/
80
81schedule:
82 schedule_delayed_work(&d->rc_query_work,msecs_to_jiffies(d->props.rc_interval));
83}
84
85int dvb_usb_remote_init(struct dvb_usb_device *d)
86{
87 int i;
88 if (d->props.rc_key_map == NULL)
89 return 0;
90
91 /* Initialise the remote-control structures.*/
92 init_input_dev(&d->rc_input_dev);
93
94 d->rc_input_dev.evbit[0] = BIT(EV_KEY);
95 d->rc_input_dev.keycodesize = sizeof(unsigned char);
96 d->rc_input_dev.keycodemax = KEY_MAX;
97 d->rc_input_dev.name = "IR-receiver inside an USB DVB receiver";
98
99 /* set the bits for the keys */
100 deb_rc("key map size: %d\n",d->props.rc_key_map_size);
101 for (i = 0; i < d->props.rc_key_map_size; i++) {
102 deb_rc("setting bit for event %d item %d\n",d->props.rc_key_map[i].event, i);
103 set_bit(d->props.rc_key_map[i].event, d->rc_input_dev.keybit);
104 }
105
106 /* Start the remote-control polling. */
107 if (d->props.rc_interval < 40)
108 d->props.rc_interval = 100; /* default */
109
110 /* setting these two values to non-zero, we have to manage key repeats */
111 d->rc_input_dev.rep[REP_PERIOD] = d->props.rc_interval;
112 d->rc_input_dev.rep[REP_DELAY] = d->props.rc_interval + 150;
113
114 input_register_device(&d->rc_input_dev);
115
116 INIT_WORK(&d->rc_query_work, dvb_usb_read_remote_control, d);
117
118 info("schedule remote query interval to %d msecs.",d->props.rc_interval);
119 schedule_delayed_work(&d->rc_query_work,msecs_to_jiffies(d->props.rc_interval));
120
121 d->state |= DVB_USB_STATE_REMOTE;
122
123 return 0;
124}
125
126int dvb_usb_remote_exit(struct dvb_usb_device *d)
127{
128 if (d->state & DVB_USB_STATE_REMOTE) {
129 cancel_delayed_work(&d->rc_query_work);
130 flush_scheduled_work();
131 input_unregister_device(&d->rc_input_dev);
132 }
133 d->state &= ~DVB_USB_STATE_REMOTE;
134 return 0;
135}
136
137#define DVB_USB_RC_NEC_EMPTY 0x00
138#define DVB_USB_RC_NEC_KEY_PRESSED 0x01
139#define DVB_USB_RC_NEC_KEY_REPEATED 0x02
140int dvb_usb_nec_rc_key_to_event(struct dvb_usb_device *d,
141 u8 keybuf[5], u32 *event, int *state)
142{
143 int i;
144 struct dvb_usb_rc_key *keymap = d->props.rc_key_map;
145 *event = 0;
146 *state = REMOTE_NO_KEY_PRESSED;
147 switch (keybuf[0]) {
148 case DVB_USB_RC_NEC_EMPTY:
149 break;
150 case DVB_USB_RC_NEC_KEY_PRESSED:
151 if ((u8) ~keybuf[1] != keybuf[2] ||
152 (u8) ~keybuf[3] != keybuf[4]) {
153 deb_err("remote control checksum failed.\n");
154 break;
155 }
156 /* See if we can match the raw key code. */
157 for (i = 0; i < sizeof(keymap)/sizeof(struct dvb_usb_rc_key); i++)
158 if (keymap[i].custom == keybuf[1] &&
159 keymap[i].data == keybuf[3]) {
160 *event = keymap[i].event;
161 *state = REMOTE_KEY_PRESSED;
162 break;
163 }
164 deb_err("key mapping failed - no appropriate key found in keymapping\n");
165 break;
166 case DVB_USB_RC_NEC_KEY_REPEATED:
167 *state = REMOTE_KEY_REPEAT;
168 break;
169 default:
170 deb_err("unkown type of remote status: %d\n",keybuf[0]);
171 break;
172 }
173 return 0;
174}
175EXPORT_SYMBOL(dvb_usb_nec_rc_key_to_event);
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