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"
9 #include <linux/usb/input.h>
11 /* Remote-control poll function - called every dib->rc_query_interval ms to see
12 * whether the remote control has received anything.
14 * TODO: Fix the repeat rate of the input device.
16 static void dvb_usb_read_remote_control(void *data
)
18 struct dvb_usb_device
*d
= data
;
22 /* TODO: need a lock here. We can simply skip checking for the remote control
25 /* when the parameter has been set to 1 via sysfs while the driver was running */
26 if (dvb_usb_disable_rc_polling
)
29 if (d
->props
.rc_query(d
,&event
,&state
)) {
30 err("error while querying for an remote control event.");
36 case REMOTE_NO_KEY_PRESSED
:
38 case REMOTE_KEY_PRESSED
:
39 deb_rc("key pressed\n");
40 d
->last_event
= event
;
41 case REMOTE_KEY_REPEAT
:
42 deb_rc("key repeated\n");
43 input_event(d
->rc_input_dev
, EV_KEY
, event
, 1);
44 input_event(d
->rc_input_dev
, EV_KEY
, d
->last_event
, 0);
45 input_sync(d
->rc_input_dev
);
51 /* improved repeat handling ???
53 case REMOTE_NO_KEY_PRESSED:
54 deb_rc("NO KEY PRESSED\n");
55 if (d->last_state != REMOTE_NO_KEY_PRESSED) {
56 deb_rc("releasing event %d\n",d->last_event);
57 input_event(d->rc_input_dev, EV_KEY, d->last_event, 0);
58 input_sync(d->rc_input_dev);
60 d->last_state = REMOTE_NO_KEY_PRESSED;
63 case REMOTE_KEY_PRESSED:
64 deb_rc("KEY PRESSED\n");
65 deb_rc("pressing event %d\n",event);
67 input_event(d->rc_input_dev, EV_KEY, event, 1);
68 input_sync(d->rc_input_dev);
70 d->last_event = event;
71 d->last_state = REMOTE_KEY_PRESSED;
73 case REMOTE_KEY_REPEAT:
74 deb_rc("KEY_REPEAT\n");
75 if (d->last_state != REMOTE_NO_KEY_PRESSED) {
76 deb_rc("repeating event %d\n",d->last_event);
77 input_event(d->rc_input_dev, EV_KEY, d->last_event, 2);
78 input_sync(d->rc_input_dev);
79 d->last_state = REMOTE_KEY_REPEAT;
87 schedule_delayed_work(&d
->rc_query_work
,msecs_to_jiffies(d
->props
.rc_interval
));
90 int dvb_usb_remote_init(struct dvb_usb_device
*d
)
94 if (d
->props
.rc_key_map
== NULL
||
95 d
->props
.rc_query
== NULL
||
96 dvb_usb_disable_rc_polling
)
99 usb_make_path(d
->udev
, d
->rc_phys
, sizeof(d
->rc_phys
));
100 strlcat(d
->rc_phys
, "/ir0", sizeof(d
->rc_phys
));
102 d
->rc_input_dev
= input_allocate_device();
103 if (!d
->rc_input_dev
)
106 d
->rc_input_dev
->evbit
[0] = BIT(EV_KEY
);
107 d
->rc_input_dev
->keycodesize
= sizeof(unsigned char);
108 d
->rc_input_dev
->keycodemax
= KEY_MAX
;
109 d
->rc_input_dev
->name
= "IR-receiver inside an USB DVB receiver";
110 d
->rc_input_dev
->phys
= d
->rc_phys
;
111 usb_to_input_id(d
->udev
, &d
->rc_input_dev
->id
);
112 d
->rc_input_dev
->cdev
.dev
= &d
->udev
->dev
;
114 /* set the bits for the keys */
115 deb_rc("key map size: %d\n", d
->props
.rc_key_map_size
);
116 for (i
= 0; i
< d
->props
.rc_key_map_size
; i
++) {
117 deb_rc("setting bit for event %d item %d\n",d
->props
.rc_key_map
[i
].event
, i
);
118 set_bit(d
->props
.rc_key_map
[i
].event
, d
->rc_input_dev
->keybit
);
121 /* Start the remote-control polling. */
122 if (d
->props
.rc_interval
< 40)
123 d
->props
.rc_interval
= 100; /* default */
125 /* setting these two values to non-zero, we have to manage key repeats */
126 d
->rc_input_dev
->rep
[REP_PERIOD
] = d
->props
.rc_interval
;
127 d
->rc_input_dev
->rep
[REP_DELAY
] = d
->props
.rc_interval
+ 150;
129 input_register_device(d
->rc_input_dev
);
131 INIT_WORK(&d
->rc_query_work
, dvb_usb_read_remote_control
, d
);
133 info("schedule remote query interval to %d msecs.", d
->props
.rc_interval
);
134 schedule_delayed_work(&d
->rc_query_work
,msecs_to_jiffies(d
->props
.rc_interval
));
136 d
->state
|= DVB_USB_STATE_REMOTE
;
141 int dvb_usb_remote_exit(struct dvb_usb_device
*d
)
143 if (d
->state
& DVB_USB_STATE_REMOTE
) {
144 cancel_delayed_work(&d
->rc_query_work
);
145 flush_scheduled_work();
146 input_unregister_device(d
->rc_input_dev
);
148 d
->state
&= ~DVB_USB_STATE_REMOTE
;
152 #define DVB_USB_RC_NEC_EMPTY 0x00
153 #define DVB_USB_RC_NEC_KEY_PRESSED 0x01
154 #define DVB_USB_RC_NEC_KEY_REPEATED 0x02
155 int dvb_usb_nec_rc_key_to_event(struct dvb_usb_device
*d
,
156 u8 keybuf
[5], u32
*event
, int *state
)
159 struct dvb_usb_rc_key
*keymap
= d
->props
.rc_key_map
;
161 *state
= REMOTE_NO_KEY_PRESSED
;
163 case DVB_USB_RC_NEC_EMPTY
:
165 case DVB_USB_RC_NEC_KEY_PRESSED
:
166 if ((u8
) ~keybuf
[1] != keybuf
[2] ||
167 (u8
) ~keybuf
[3] != keybuf
[4]) {
168 deb_err("remote control checksum failed.\n");
171 /* See if we can match the raw key code. */
172 for (i
= 0; i
< d
->props
.rc_key_map_size
; i
++)
173 if (keymap
[i
].custom
== keybuf
[1] &&
174 keymap
[i
].data
== keybuf
[3]) {
175 *event
= keymap
[i
].event
;
176 *state
= REMOTE_KEY_PRESSED
;
179 deb_err("key mapping failed - no appropriate key found in keymapping\n");
181 case DVB_USB_RC_NEC_KEY_REPEATED
:
182 *state
= REMOTE_KEY_REPEAT
;
185 deb_err("unkown type of remote status: %d\n",keybuf
[0]);
190 EXPORT_SYMBOL(dvb_usb_nec_rc_key_to_event
);