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
, 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
)
93 if (d
->props
.rc_key_map
== NULL
||
94 d
->props
.rc_query
== NULL
||
95 dvb_usb_disable_rc_polling
)
98 usb_make_path(d
->udev
, d
->rc_phys
, sizeof(d
->rc_phys
));
99 strlcpy(d
->rc_phys
, "/ir0", sizeof(d
->rc_phys
));
101 d
->rc_input_dev
= input_allocate_device();
102 if (!d
->rc_input_dev
)
105 d
->rc_input_dev
->evbit
[0] = BIT(EV_KEY
);
106 d
->rc_input_dev
->keycodesize
= sizeof(unsigned char);
107 d
->rc_input_dev
->keycodemax
= KEY_MAX
;
108 d
->rc_input_dev
->name
= "IR-receiver inside an USB DVB receiver";
109 d
->rc_input_dev
->phys
= d
->rc_phys
;
111 /* set the bits for the keys */
112 deb_rc("key map size: %d\n", d
->props
.rc_key_map_size
);
113 for (i
= 0; i
< d
->props
.rc_key_map_size
; i
++) {
114 deb_rc("setting bit for event %d item %d\n",d
->props
.rc_key_map
[i
].event
, i
);
115 set_bit(d
->props
.rc_key_map
[i
].event
, d
->rc_input_dev
->keybit
);
118 /* Start the remote-control polling. */
119 if (d
->props
.rc_interval
< 40)
120 d
->props
.rc_interval
= 100; /* default */
122 /* setting these two values to non-zero, we have to manage key repeats */
123 d
->rc_input_dev
->rep
[REP_PERIOD
] = d
->props
.rc_interval
;
124 d
->rc_input_dev
->rep
[REP_DELAY
] = d
->props
.rc_interval
+ 150;
126 input_register_device(d
->rc_input_dev
);
128 INIT_WORK(&d
->rc_query_work
, dvb_usb_read_remote_control
, d
);
130 info("schedule remote query interval to %d msecs.", d
->props
.rc_interval
);
131 schedule_delayed_work(&d
->rc_query_work
,msecs_to_jiffies(d
->props
.rc_interval
));
133 d
->state
|= DVB_USB_STATE_REMOTE
;
138 int dvb_usb_remote_exit(struct dvb_usb_device
*d
)
140 if (d
->state
& DVB_USB_STATE_REMOTE
) {
141 cancel_delayed_work(&d
->rc_query_work
);
142 flush_scheduled_work();
143 input_unregister_device(d
->rc_input_dev
);
145 d
->state
&= ~DVB_USB_STATE_REMOTE
;
149 #define DVB_USB_RC_NEC_EMPTY 0x00
150 #define DVB_USB_RC_NEC_KEY_PRESSED 0x01
151 #define DVB_USB_RC_NEC_KEY_REPEATED 0x02
152 int dvb_usb_nec_rc_key_to_event(struct dvb_usb_device
*d
,
153 u8 keybuf
[5], u32
*event
, int *state
)
156 struct dvb_usb_rc_key
*keymap
= d
->props
.rc_key_map
;
158 *state
= REMOTE_NO_KEY_PRESSED
;
160 case DVB_USB_RC_NEC_EMPTY
:
162 case DVB_USB_RC_NEC_KEY_PRESSED
:
163 if ((u8
) ~keybuf
[1] != keybuf
[2] ||
164 (u8
) ~keybuf
[3] != keybuf
[4]) {
165 deb_err("remote control checksum failed.\n");
168 /* See if we can match the raw key code. */
169 for (i
= 0; i
< d
->props
.rc_key_map_size
; i
++)
170 if (keymap
[i
].custom
== keybuf
[1] &&
171 keymap
[i
].data
== keybuf
[3]) {
172 *event
= keymap
[i
].event
;
173 *state
= REMOTE_KEY_PRESSED
;
176 deb_err("key mapping failed - no appropriate key found in keymapping\n");
178 case DVB_USB_RC_NEC_KEY_REPEATED
:
179 *state
= REMOTE_KEY_REPEAT
;
182 deb_err("unkown type of remote status: %d\n",keybuf
[0]);
187 EXPORT_SYMBOL(dvb_usb_nec_rc_key_to_event
);