Commit | Line | Data |
---|---|---|
776338e1 JS |
1 | /* dvb-usb-remote.c is part of the DVB USB library. |
2 | * | |
4d43e13f | 3 | * Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@desy.de) |
776338e1 JS |
4 | * see dvb-usb-init.c for copyright information. |
5 | * | |
59c51591 | 6 | * This file contains functions for initializing the input-device and for handling remote-control-queries. |
776338e1 JS |
7 | */ |
8 | #include "dvb-usb-common.h" | |
4fcd7d8f | 9 | #include <linux/usb/input.h> |
776338e1 | 10 | |
f06e6a52 DT |
11 | static unsigned int |
12 | legacy_dvb_usb_get_keymap_index(const struct input_keymap_entry *ke, | |
13 | struct rc_map_table *keymap, | |
14 | unsigned int keymap_size) | |
15 | { | |
16 | unsigned int index; | |
17 | unsigned int scancode; | |
18 | ||
19 | if (ke->flags & INPUT_KEYMAP_BY_INDEX) { | |
20 | index = ke->index; | |
21 | } else { | |
22 | if (input_scancode_to_scalar(ke, &scancode)) | |
23 | return keymap_size; | |
24 | ||
25 | /* See if we can match the raw key code. */ | |
26 | for (index = 0; index < keymap_size; index++) | |
27 | if (keymap[index].scancode == scancode) | |
28 | break; | |
29 | ||
30 | /* See if there is an unused hole in the map */ | |
31 | if (index >= keymap_size) { | |
32 | for (index = 0; index < keymap_size; index++) { | |
33 | if (keymap[index].keycode == KEY_RESERVED || | |
34 | keymap[index].keycode == KEY_UNKNOWN) { | |
35 | break; | |
36 | } | |
37 | } | |
38 | } | |
39 | } | |
40 | ||
41 | return index; | |
42 | } | |
43 | ||
6520342b | 44 | static int legacy_dvb_usb_getkeycode(struct input_dev *dev, |
f06e6a52 | 45 | struct input_keymap_entry *ke) |
b77f0a76 MCC |
46 | { |
47 | struct dvb_usb_device *d = input_get_drvdata(dev); | |
2f4f58d6 | 48 | struct rc_map_table *keymap = d->props.rc.legacy.rc_map_table; |
f06e6a52 DT |
49 | unsigned int keymap_size = d->props.rc.legacy.rc_map_size; |
50 | unsigned int index; | |
b77f0a76 | 51 | |
f06e6a52 DT |
52 | index = legacy_dvb_usb_get_keymap_index(ke, keymap, keymap_size); |
53 | if (index >= keymap_size) | |
54 | return -EINVAL; | |
a4c1cbc7 | 55 | |
f06e6a52 DT |
56 | ke->keycode = keymap[index].keycode; |
57 | if (ke->keycode == KEY_UNKNOWN) | |
58 | ke->keycode = KEY_RESERVED; | |
59 | ke->len = sizeof(keymap[index].scancode); | |
60 | memcpy(&ke->scancode, &keymap[index].scancode, ke->len); | |
61 | ke->index = index; | |
a4c1cbc7 | 62 | |
f06e6a52 | 63 | return 0; |
b77f0a76 MCC |
64 | } |
65 | ||
6520342b | 66 | static int legacy_dvb_usb_setkeycode(struct input_dev *dev, |
f06e6a52 DT |
67 | const struct input_keymap_entry *ke, |
68 | unsigned int *old_keycode) | |
b77f0a76 MCC |
69 | { |
70 | struct dvb_usb_device *d = input_get_drvdata(dev); | |
2f4f58d6 | 71 | struct rc_map_table *keymap = d->props.rc.legacy.rc_map_table; |
f06e6a52 DT |
72 | unsigned int keymap_size = d->props.rc.legacy.rc_map_size; |
73 | unsigned int index; | |
b77f0a76 | 74 | |
f06e6a52 | 75 | index = legacy_dvb_usb_get_keymap_index(ke, keymap, keymap_size); |
b77f0a76 MCC |
76 | /* |
77 | * FIXME: Currently, it is not possible to increase the size of | |
78 | * scancode table. For it to happen, one possibility | |
79 | * would be to allocate a table with key_map_size + 1, | |
80 | * copying data, appending the new key on it, and freeing | |
81 | * the old one - or maybe just allocating some spare space | |
82 | */ | |
f06e6a52 DT |
83 | if (index >= keymap_size) |
84 | return -EINVAL; | |
85 | ||
86 | *old_keycode = keymap[index].keycode; | |
87 | keymap->keycode = ke->keycode; | |
88 | __set_bit(ke->keycode, dev->keybit); | |
89 | ||
90 | if (*old_keycode != KEY_RESERVED) { | |
91 | __clear_bit(*old_keycode, dev->keybit); | |
92 | for (index = 0; index < keymap_size; index++) { | |
93 | if (keymap[index].keycode == *old_keycode) { | |
94 | __set_bit(*old_keycode, dev->keybit); | |
95 | break; | |
96 | } | |
97 | } | |
98 | } | |
b77f0a76 | 99 | |
f06e6a52 | 100 | return 0; |
b77f0a76 MCC |
101 | } |
102 | ||
776338e1 JS |
103 | /* Remote-control poll function - called every dib->rc_query_interval ms to see |
104 | * whether the remote control has received anything. | |
105 | * | |
106 | * TODO: Fix the repeat rate of the input device. | |
107 | */ | |
6520342b | 108 | static void legacy_dvb_usb_read_remote_control(struct work_struct *work) |
776338e1 | 109 | { |
c4028958 DH |
110 | struct dvb_usb_device *d = |
111 | container_of(work, struct dvb_usb_device, rc_query_work.work); | |
776338e1 JS |
112 | u32 event; |
113 | int state; | |
114 | ||
115 | /* TODO: need a lock here. We can simply skip checking for the remote control | |
116 | if we're busy. */ | |
117 | ||
c9b06fa4 PB |
118 | /* when the parameter has been set to 1 via sysfs while the driver was running */ |
119 | if (dvb_usb_disable_rc_polling) | |
120 | return; | |
121 | ||
f72a27b8 | 122 | if (d->props.rc.legacy.rc_query(d,&event,&state)) { |
776338e1 JS |
123 | err("error while querying for an remote control event."); |
124 | goto schedule; | |
125 | } | |
126 | ||
127 | ||
128 | switch (state) { | |
129 | case REMOTE_NO_KEY_PRESSED: | |
130 | break; | |
131 | case REMOTE_KEY_PRESSED: | |
132 | deb_rc("key pressed\n"); | |
133 | d->last_event = event; | |
134 | case REMOTE_KEY_REPEAT: | |
135 | deb_rc("key repeated\n"); | |
d8b4b582 DH |
136 | input_event(d->input_dev, EV_KEY, event, 1); |
137 | input_sync(d->input_dev); | |
138 | input_event(d->input_dev, EV_KEY, d->last_event, 0); | |
139 | input_sync(d->input_dev); | |
776338e1 JS |
140 | break; |
141 | default: | |
142 | break; | |
143 | } | |
144 | ||
145 | /* improved repeat handling ??? | |
146 | switch (state) { | |
147 | case REMOTE_NO_KEY_PRESSED: | |
148 | deb_rc("NO KEY PRESSED\n"); | |
149 | if (d->last_state != REMOTE_NO_KEY_PRESSED) { | |
150 | deb_rc("releasing event %d\n",d->last_event); | |
b7df3910 DT |
151 | input_event(d->rc_input_dev, EV_KEY, d->last_event, 0); |
152 | input_sync(d->rc_input_dev); | |
776338e1 JS |
153 | } |
154 | d->last_state = REMOTE_NO_KEY_PRESSED; | |
155 | d->last_event = 0; | |
156 | break; | |
157 | case REMOTE_KEY_PRESSED: | |
158 | deb_rc("KEY PRESSED\n"); | |
159 | deb_rc("pressing event %d\n",event); | |
160 | ||
b7df3910 DT |
161 | input_event(d->rc_input_dev, EV_KEY, event, 1); |
162 | input_sync(d->rc_input_dev); | |
776338e1 JS |
163 | |
164 | d->last_event = event; | |
165 | d->last_state = REMOTE_KEY_PRESSED; | |
166 | break; | |
167 | case REMOTE_KEY_REPEAT: | |
168 | deb_rc("KEY_REPEAT\n"); | |
169 | if (d->last_state != REMOTE_NO_KEY_PRESSED) { | |
170 | deb_rc("repeating event %d\n",d->last_event); | |
b7df3910 DT |
171 | input_event(d->rc_input_dev, EV_KEY, d->last_event, 2); |
172 | input_sync(d->rc_input_dev); | |
776338e1 JS |
173 | d->last_state = REMOTE_KEY_REPEAT; |
174 | } | |
175 | default: | |
176 | break; | |
177 | } | |
178 | */ | |
179 | ||
180 | schedule: | |
f72a27b8 | 181 | schedule_delayed_work(&d->rc_query_work,msecs_to_jiffies(d->props.rc.legacy.rc_interval)); |
776338e1 JS |
182 | } |
183 | ||
d8b4b582 | 184 | static int legacy_dvb_usb_remote_init(struct dvb_usb_device *d) |
6520342b MCC |
185 | { |
186 | int i, err, rc_interval; | |
d8b4b582 DH |
187 | struct input_dev *input_dev; |
188 | ||
189 | input_dev = input_allocate_device(); | |
190 | if (!input_dev) | |
191 | return -ENOMEM; | |
192 | ||
193 | input_dev->evbit[0] = BIT_MASK(EV_KEY); | |
194 | input_dev->name = "IR-receiver inside an USB DVB receiver"; | |
195 | input_dev->phys = d->rc_phys; | |
196 | usb_to_input_id(d->udev, &input_dev->id); | |
197 | input_dev->dev.parent = &d->udev->dev; | |
198 | d->input_dev = input_dev; | |
199 | d->rc_dev = NULL; | |
6520342b | 200 | |
aebd636b DT |
201 | input_dev->getkeycode = legacy_dvb_usb_getkeycode; |
202 | input_dev->setkeycode = legacy_dvb_usb_setkeycode; | |
6520342b MCC |
203 | |
204 | /* set the bits for the keys */ | |
2f4f58d6 MCC |
205 | deb_rc("key map size: %d\n", d->props.rc.legacy.rc_map_size); |
206 | for (i = 0; i < d->props.rc.legacy.rc_map_size; i++) { | |
6520342b | 207 | deb_rc("setting bit for event %d item %d\n", |
2f4f58d6 MCC |
208 | d->props.rc.legacy.rc_map_table[i].keycode, i); |
209 | set_bit(d->props.rc.legacy.rc_map_table[i].keycode, input_dev->keybit); | |
6520342b MCC |
210 | } |
211 | ||
212 | /* setting these two values to non-zero, we have to manage key repeats */ | |
213 | input_dev->rep[REP_PERIOD] = d->props.rc.legacy.rc_interval; | |
214 | input_dev->rep[REP_DELAY] = d->props.rc.legacy.rc_interval + 150; | |
215 | ||
216 | input_set_drvdata(input_dev, d); | |
217 | ||
218 | err = input_register_device(input_dev); | |
219 | if (err) | |
220 | input_free_device(input_dev); | |
221 | ||
222 | rc_interval = d->props.rc.legacy.rc_interval; | |
223 | ||
224 | INIT_DELAYED_WORK(&d->rc_query_work, legacy_dvb_usb_read_remote_control); | |
225 | ||
226 | info("schedule remote query interval to %d msecs.", rc_interval); | |
227 | schedule_delayed_work(&d->rc_query_work, | |
228 | msecs_to_jiffies(rc_interval)); | |
229 | ||
230 | d->state |= DVB_USB_STATE_REMOTE; | |
231 | ||
232 | return err; | |
233 | } | |
234 | ||
235 | /* Remote-control poll function - called every dib->rc_query_interval ms to see | |
236 | * whether the remote control has received anything. | |
237 | * | |
238 | * TODO: Fix the repeat rate of the input device. | |
239 | */ | |
240 | static void dvb_usb_read_remote_control(struct work_struct *work) | |
241 | { | |
242 | struct dvb_usb_device *d = | |
243 | container_of(work, struct dvb_usb_device, rc_query_work.work); | |
244 | int err; | |
245 | ||
246 | /* TODO: need a lock here. We can simply skip checking for the remote control | |
247 | if we're busy. */ | |
248 | ||
249 | /* when the parameter has been set to 1 via sysfs while the | |
250 | * driver was running, or when bulk mode is enabled after IR init | |
251 | */ | |
252 | if (dvb_usb_disable_rc_polling || d->props.rc.core.bulk_mode) | |
253 | return; | |
254 | ||
255 | err = d->props.rc.core.rc_query(d); | |
256 | if (err) | |
257 | err("error %d while querying for an remote control event.", err); | |
258 | ||
259 | schedule_delayed_work(&d->rc_query_work, | |
260 | msecs_to_jiffies(d->props.rc.core.rc_interval)); | |
261 | } | |
262 | ||
d8b4b582 | 263 | static int rc_core_dvb_usb_remote_init(struct dvb_usb_device *d) |
6520342b MCC |
264 | { |
265 | int err, rc_interval; | |
d8b4b582 DH |
266 | struct rc_dev *dev; |
267 | ||
268 | dev = rc_allocate_device(); | |
269 | if (!dev) | |
270 | return -ENOMEM; | |
6520342b | 271 | |
d8b4b582 DH |
272 | dev->driver_name = d->props.rc.core.module_name; |
273 | dev->map_name = d->props.rc.core.rc_codes; | |
274 | dev->change_protocol = d->props.rc.core.change_protocol; | |
275 | dev->allowed_protos = d->props.rc.core.allowed_protos; | |
276 | dev->driver_type = RC_DRIVER_SCANCODE; | |
277 | usb_to_input_id(d->udev, &dev->input_id); | |
278 | dev->input_name = "IR-receiver inside an USB DVB receiver"; | |
279 | dev->input_phys = d->rc_phys; | |
280 | dev->dev.parent = &d->udev->dev; | |
281 | dev->priv = d; | |
282 | ||
283 | err = rc_register_device(dev); | |
284 | if (err < 0) { | |
285 | rc_free_device(dev); | |
6520342b | 286 | return err; |
d8b4b582 DH |
287 | } |
288 | ||
289 | d->input_dev = NULL; | |
290 | d->rc_dev = dev; | |
6520342b MCC |
291 | |
292 | if (!d->props.rc.core.rc_query || d->props.rc.core.bulk_mode) | |
293 | return 0; | |
294 | ||
295 | /* Polling mode - initialize a work queue for handling it */ | |
296 | INIT_DELAYED_WORK(&d->rc_query_work, dvb_usb_read_remote_control); | |
297 | ||
298 | rc_interval = d->props.rc.core.rc_interval; | |
299 | ||
300 | info("schedule remote query interval to %d msecs.", rc_interval); | |
301 | schedule_delayed_work(&d->rc_query_work, | |
302 | msecs_to_jiffies(rc_interval)); | |
303 | ||
304 | return 0; | |
305 | } | |
306 | ||
776338e1 JS |
307 | int dvb_usb_remote_init(struct dvb_usb_device *d) |
308 | { | |
b07b4783 | 309 | int err; |
b7df3910 | 310 | |
6520342b MCC |
311 | if (dvb_usb_disable_rc_polling) |
312 | return 0; | |
313 | ||
2f4f58d6 | 314 | if (d->props.rc.legacy.rc_map_table && d->props.rc.legacy.rc_query) |
6520342b MCC |
315 | d->props.rc.mode = DVB_RC_LEGACY; |
316 | else if (d->props.rc.core.rc_codes) | |
317 | d->props.rc.mode = DVB_RC_CORE; | |
318 | else | |
776338e1 JS |
319 | return 0; |
320 | ||
b7df3910 | 321 | usb_make_path(d->udev, d->rc_phys, sizeof(d->rc_phys)); |
4fcd7d8f | 322 | strlcat(d->rc_phys, "/ir0", sizeof(d->rc_phys)); |
b7df3910 | 323 | |
776338e1 | 324 | /* Start the remote-control polling. */ |
f72a27b8 MCC |
325 | if (d->props.rc.legacy.rc_interval < 40) |
326 | d->props.rc.legacy.rc_interval = 100; /* default */ | |
776338e1 | 327 | |
6520342b | 328 | if (d->props.rc.mode == DVB_RC_LEGACY) |
d8b4b582 | 329 | err = legacy_dvb_usb_remote_init(d); |
6520342b | 330 | else |
d8b4b582 | 331 | err = rc_core_dvb_usb_remote_init(d); |
6520342b MCC |
332 | if (err) |
333 | return err; | |
776338e1 JS |
334 | |
335 | d->state |= DVB_USB_STATE_REMOTE; | |
336 | ||
337 | return 0; | |
338 | } | |
339 | ||
340 | int dvb_usb_remote_exit(struct dvb_usb_device *d) | |
341 | { | |
342 | if (d->state & DVB_USB_STATE_REMOTE) { | |
afe2c511 | 343 | cancel_delayed_work_sync(&d->rc_query_work); |
6520342b | 344 | if (d->props.rc.mode == DVB_RC_LEGACY) |
d8b4b582 | 345 | input_unregister_device(d->input_dev); |
6520342b | 346 | else |
d8b4b582 | 347 | rc_unregister_device(d->rc_dev); |
776338e1 JS |
348 | } |
349 | d->state &= ~DVB_USB_STATE_REMOTE; | |
350 | return 0; | |
351 | } | |
352 | ||
353 | #define DVB_USB_RC_NEC_EMPTY 0x00 | |
354 | #define DVB_USB_RC_NEC_KEY_PRESSED 0x01 | |
355 | #define DVB_USB_RC_NEC_KEY_REPEATED 0x02 | |
356 | int dvb_usb_nec_rc_key_to_event(struct dvb_usb_device *d, | |
357 | u8 keybuf[5], u32 *event, int *state) | |
358 | { | |
359 | int i; | |
2f4f58d6 | 360 | struct rc_map_table *keymap = d->props.rc.legacy.rc_map_table; |
776338e1 JS |
361 | *event = 0; |
362 | *state = REMOTE_NO_KEY_PRESSED; | |
363 | switch (keybuf[0]) { | |
364 | case DVB_USB_RC_NEC_EMPTY: | |
365 | break; | |
366 | case DVB_USB_RC_NEC_KEY_PRESSED: | |
367 | if ((u8) ~keybuf[1] != keybuf[2] || | |
368 | (u8) ~keybuf[3] != keybuf[4]) { | |
369 | deb_err("remote control checksum failed.\n"); | |
370 | break; | |
371 | } | |
372 | /* See if we can match the raw key code. */ | |
2f4f58d6 | 373 | for (i = 0; i < d->props.rc.legacy.rc_map_size; i++) |
2e365883 MCC |
374 | if (rc5_custom(&keymap[i]) == keybuf[1] && |
375 | rc5_data(&keymap[i]) == keybuf[3]) { | |
34abf219 | 376 | *event = keymap[i].keycode; |
776338e1 | 377 | *state = REMOTE_KEY_PRESSED; |
1df896aa | 378 | return 0; |
776338e1 JS |
379 | } |
380 | deb_err("key mapping failed - no appropriate key found in keymapping\n"); | |
381 | break; | |
382 | case DVB_USB_RC_NEC_KEY_REPEATED: | |
383 | *state = REMOTE_KEY_REPEAT; | |
384 | break; | |
385 | default: | |
af901ca1 | 386 | deb_err("unknown type of remote status: %d\n",keybuf[0]); |
776338e1 JS |
387 | break; |
388 | } | |
389 | return 0; | |
390 | } | |
391 | EXPORT_SYMBOL(dvb_usb_nec_rc_key_to_event); |