1 /* dvb-usb-remote.c is part of the DVB USB library.
3 * Copyright (C) 2004-5 Patrick Boettcher (patrick.boettcher@desy.de)
4 * see dvb-usb-init.c for copyright information.
6 * This file contains functions for initializing the the input-device and for handling remote-control-queries.
8 #include "dvb-usb-common.h"
10 /* Remote-control poll function - called every dib->rc_query_interval ms to see
11 * whether the remote control has received anything.
13 * TODO: Fix the repeat rate of the input device.
15 static void dvb_usb_read_remote_control(void *data
)
17 struct dvb_usb_device
*d
= data
;
21 /* TODO: need a lock here. We can simply skip checking for the remote control
24 /* when the parameter has been set to 1 via sysfs while the driver was running */
25 if (dvb_usb_disable_rc_polling
)
28 if (d
->props
.rc_query(d
,&event
,&state
)) {
29 err("error while querying for an remote control event.");
35 case REMOTE_NO_KEY_PRESSED
:
37 case REMOTE_KEY_PRESSED
:
38 deb_rc("key pressed\n");
39 d
->last_event
= event
;
40 case REMOTE_KEY_REPEAT
:
41 deb_rc("key repeated\n");
42 input_event(&d
->rc_input_dev
, EV_KEY
, d
->last_event
, 1);
43 input_event(&d
->rc_input_dev
, EV_KEY
, d
->last_event
, 0);
44 input_sync(&d
->rc_input_dev
);
50 /* improved repeat handling ???
52 case REMOTE_NO_KEY_PRESSED:
53 deb_rc("NO KEY PRESSED\n");
54 if (d->last_state != REMOTE_NO_KEY_PRESSED) {
55 deb_rc("releasing event %d\n",d->last_event);
56 input_event(&d->rc_input_dev, EV_KEY, d->last_event, 0);
57 input_sync(&d->rc_input_dev);
59 d->last_state = REMOTE_NO_KEY_PRESSED;
62 case REMOTE_KEY_PRESSED:
63 deb_rc("KEY PRESSED\n");
64 deb_rc("pressing event %d\n",event);
66 input_event(&d->rc_input_dev, EV_KEY, event, 1);
67 input_sync(&d->rc_input_dev);
69 d->last_event = event;
70 d->last_state = REMOTE_KEY_PRESSED;
72 case REMOTE_KEY_REPEAT:
73 deb_rc("KEY_REPEAT\n");
74 if (d->last_state != REMOTE_NO_KEY_PRESSED) {
75 deb_rc("repeating event %d\n",d->last_event);
76 input_event(&d->rc_input_dev, EV_KEY, d->last_event, 2);
77 input_sync(&d->rc_input_dev);
78 d->last_state = REMOTE_KEY_REPEAT;
86 schedule_delayed_work(&d
->rc_query_work
,msecs_to_jiffies(d
->props
.rc_interval
));
89 int dvb_usb_remote_init(struct dvb_usb_device
*d
)
92 if (d
->props
.rc_key_map
== NULL
||
93 d
->props
.rc_query
== NULL
||
94 dvb_usb_disable_rc_polling
)
97 /* Initialise the remote-control structures.*/
98 init_input_dev(&d
->rc_input_dev
);
100 d
->rc_input_dev
.evbit
[0] = BIT(EV_KEY
);
101 d
->rc_input_dev
.keycodesize
= sizeof(unsigned char);
102 d
->rc_input_dev
.keycodemax
= KEY_MAX
;
103 d
->rc_input_dev
.name
= "IR-receiver inside an USB DVB receiver";
105 /* set the bits for the keys */
106 deb_rc("key map size: %d\n",d
->props
.rc_key_map_size
);
107 for (i
= 0; i
< d
->props
.rc_key_map_size
; i
++) {
108 deb_rc("setting bit for event %d item %d\n",d
->props
.rc_key_map
[i
].event
, i
);
109 set_bit(d
->props
.rc_key_map
[i
].event
, d
->rc_input_dev
.keybit
);
112 /* Start the remote-control polling. */
113 if (d
->props
.rc_interval
< 40)
114 d
->props
.rc_interval
= 100; /* default */
116 /* setting these two values to non-zero, we have to manage key repeats */
117 d
->rc_input_dev
.rep
[REP_PERIOD
] = d
->props
.rc_interval
;
118 d
->rc_input_dev
.rep
[REP_DELAY
] = d
->props
.rc_interval
+ 150;
120 input_register_device(&d
->rc_input_dev
);
122 INIT_WORK(&d
->rc_query_work
, dvb_usb_read_remote_control
, d
);
124 info("schedule remote query interval to %d msecs.",d
->props
.rc_interval
);
125 schedule_delayed_work(&d
->rc_query_work
,msecs_to_jiffies(d
->props
.rc_interval
));
127 d
->state
|= DVB_USB_STATE_REMOTE
;
132 int dvb_usb_remote_exit(struct dvb_usb_device
*d
)
134 if (d
->state
& DVB_USB_STATE_REMOTE
) {
135 cancel_delayed_work(&d
->rc_query_work
);
136 flush_scheduled_work();
137 input_unregister_device(&d
->rc_input_dev
);
139 d
->state
&= ~DVB_USB_STATE_REMOTE
;
143 #define DVB_USB_RC_NEC_EMPTY 0x00
144 #define DVB_USB_RC_NEC_KEY_PRESSED 0x01
145 #define DVB_USB_RC_NEC_KEY_REPEATED 0x02
146 int dvb_usb_nec_rc_key_to_event(struct dvb_usb_device
*d
,
147 u8 keybuf
[5], u32
*event
, int *state
)
150 struct dvb_usb_rc_key
*keymap
= d
->props
.rc_key_map
;
152 *state
= REMOTE_NO_KEY_PRESSED
;
154 case DVB_USB_RC_NEC_EMPTY
:
156 case DVB_USB_RC_NEC_KEY_PRESSED
:
157 if ((u8
) ~keybuf
[1] != keybuf
[2] ||
158 (u8
) ~keybuf
[3] != keybuf
[4]) {
159 deb_err("remote control checksum failed.\n");
162 /* See if we can match the raw key code. */
163 for (i
= 0; i
< d
->props
.rc_key_map_size
; i
++)
164 if (keymap
[i
].custom
== keybuf
[1] &&
165 keymap
[i
].data
== keybuf
[3]) {
166 *event
= keymap
[i
].event
;
167 *state
= REMOTE_KEY_PRESSED
;
170 deb_err("key mapping failed - no appropriate key found in keymapping\n");
172 case DVB_USB_RC_NEC_KEY_REPEATED
:
173 *state
= REMOTE_KEY_REPEAT
;
176 deb_err("unkown type of remote status: %d\n",keybuf
[0]);
181 EXPORT_SYMBOL(dvb_usb_nec_rc_key_to_event
);