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 | |
6520342b | 11 | static int legacy_dvb_usb_getkeycode(struct input_dev *dev, |
58b93995 | 12 | unsigned int scancode, unsigned int *keycode) |
b77f0a76 MCC |
13 | { |
14 | struct dvb_usb_device *d = input_get_drvdata(dev); | |
15 | ||
f72a27b8 | 16 | struct ir_scancode *keymap = d->props.rc.legacy.rc_key_map; |
b77f0a76 MCC |
17 | int i; |
18 | ||
19 | /* See if we can match the raw key code. */ | |
f72a27b8 | 20 | for (i = 0; i < d->props.rc.legacy.rc_key_map_size; i++) |
34abf219 MCC |
21 | if (keymap[i].scancode == scancode) { |
22 | *keycode = keymap[i].keycode; | |
b77f0a76 MCC |
23 | return 0; |
24 | } | |
a4c1cbc7 MCC |
25 | |
26 | /* | |
27 | * If is there extra space, returns KEY_RESERVED, | |
6520342b | 28 | * otherwise, input core won't let legacy_dvb_usb_setkeycode |
a4c1cbc7 MCC |
29 | * to work |
30 | */ | |
f72a27b8 | 31 | for (i = 0; i < d->props.rc.legacy.rc_key_map_size; i++) |
34abf219 MCC |
32 | if (keymap[i].keycode == KEY_RESERVED || |
33 | keymap[i].keycode == KEY_UNKNOWN) { | |
a4c1cbc7 MCC |
34 | *keycode = KEY_RESERVED; |
35 | return 0; | |
36 | } | |
37 | ||
b77f0a76 MCC |
38 | return -EINVAL; |
39 | } | |
40 | ||
6520342b | 41 | static int legacy_dvb_usb_setkeycode(struct input_dev *dev, |
58b93995 | 42 | unsigned int scancode, unsigned int keycode) |
b77f0a76 MCC |
43 | { |
44 | struct dvb_usb_device *d = input_get_drvdata(dev); | |
45 | ||
f72a27b8 | 46 | struct ir_scancode *keymap = d->props.rc.legacy.rc_key_map; |
b77f0a76 MCC |
47 | int i; |
48 | ||
49 | /* Search if it is replacing an existing keycode */ | |
f72a27b8 | 50 | for (i = 0; i < d->props.rc.legacy.rc_key_map_size; i++) |
34abf219 MCC |
51 | if (keymap[i].scancode == scancode) { |
52 | keymap[i].keycode = keycode; | |
b77f0a76 MCC |
53 | return 0; |
54 | } | |
55 | ||
56 | /* Search if is there a clean entry. If so, use it */ | |
f72a27b8 | 57 | for (i = 0; i < d->props.rc.legacy.rc_key_map_size; i++) |
34abf219 MCC |
58 | if (keymap[i].keycode == KEY_RESERVED || |
59 | keymap[i].keycode == KEY_UNKNOWN) { | |
60 | keymap[i].scancode = scancode; | |
61 | keymap[i].keycode = keycode; | |
b77f0a76 MCC |
62 | return 0; |
63 | } | |
64 | ||
65 | /* | |
66 | * FIXME: Currently, it is not possible to increase the size of | |
67 | * scancode table. For it to happen, one possibility | |
68 | * would be to allocate a table with key_map_size + 1, | |
69 | * copying data, appending the new key on it, and freeing | |
70 | * the old one - or maybe just allocating some spare space | |
71 | */ | |
72 | ||
73 | return -EINVAL; | |
74 | } | |
75 | ||
776338e1 JS |
76 | /* Remote-control poll function - called every dib->rc_query_interval ms to see |
77 | * whether the remote control has received anything. | |
78 | * | |
79 | * TODO: Fix the repeat rate of the input device. | |
80 | */ | |
6520342b | 81 | static void legacy_dvb_usb_read_remote_control(struct work_struct *work) |
776338e1 | 82 | { |
c4028958 DH |
83 | struct dvb_usb_device *d = |
84 | container_of(work, struct dvb_usb_device, rc_query_work.work); | |
776338e1 JS |
85 | u32 event; |
86 | int state; | |
87 | ||
88 | /* TODO: need a lock here. We can simply skip checking for the remote control | |
89 | if we're busy. */ | |
90 | ||
c9b06fa4 PB |
91 | /* when the parameter has been set to 1 via sysfs while the driver was running */ |
92 | if (dvb_usb_disable_rc_polling) | |
93 | return; | |
94 | ||
f72a27b8 | 95 | if (d->props.rc.legacy.rc_query(d,&event,&state)) { |
776338e1 JS |
96 | err("error while querying for an remote control event."); |
97 | goto schedule; | |
98 | } | |
99 | ||
100 | ||
101 | switch (state) { | |
102 | case REMOTE_NO_KEY_PRESSED: | |
103 | break; | |
104 | case REMOTE_KEY_PRESSED: | |
105 | deb_rc("key pressed\n"); | |
106 | d->last_event = event; | |
107 | case REMOTE_KEY_REPEAT: | |
108 | deb_rc("key repeated\n"); | |
d8b4b582 DH |
109 | input_event(d->input_dev, EV_KEY, event, 1); |
110 | input_sync(d->input_dev); | |
111 | input_event(d->input_dev, EV_KEY, d->last_event, 0); | |
112 | input_sync(d->input_dev); | |
776338e1 JS |
113 | break; |
114 | default: | |
115 | break; | |
116 | } | |
117 | ||
118 | /* improved repeat handling ??? | |
119 | switch (state) { | |
120 | case REMOTE_NO_KEY_PRESSED: | |
121 | deb_rc("NO KEY PRESSED\n"); | |
122 | if (d->last_state != REMOTE_NO_KEY_PRESSED) { | |
123 | deb_rc("releasing event %d\n",d->last_event); | |
b7df3910 DT |
124 | input_event(d->rc_input_dev, EV_KEY, d->last_event, 0); |
125 | input_sync(d->rc_input_dev); | |
776338e1 JS |
126 | } |
127 | d->last_state = REMOTE_NO_KEY_PRESSED; | |
128 | d->last_event = 0; | |
129 | break; | |
130 | case REMOTE_KEY_PRESSED: | |
131 | deb_rc("KEY PRESSED\n"); | |
132 | deb_rc("pressing event %d\n",event); | |
133 | ||
b7df3910 DT |
134 | input_event(d->rc_input_dev, EV_KEY, event, 1); |
135 | input_sync(d->rc_input_dev); | |
776338e1 JS |
136 | |
137 | d->last_event = event; | |
138 | d->last_state = REMOTE_KEY_PRESSED; | |
139 | break; | |
140 | case REMOTE_KEY_REPEAT: | |
141 | deb_rc("KEY_REPEAT\n"); | |
142 | if (d->last_state != REMOTE_NO_KEY_PRESSED) { | |
143 | deb_rc("repeating event %d\n",d->last_event); | |
b7df3910 DT |
144 | input_event(d->rc_input_dev, EV_KEY, d->last_event, 2); |
145 | input_sync(d->rc_input_dev); | |
776338e1 JS |
146 | d->last_state = REMOTE_KEY_REPEAT; |
147 | } | |
148 | default: | |
149 | break; | |
150 | } | |
151 | */ | |
152 | ||
153 | schedule: | |
f72a27b8 | 154 | schedule_delayed_work(&d->rc_query_work,msecs_to_jiffies(d->props.rc.legacy.rc_interval)); |
776338e1 JS |
155 | } |
156 | ||
d8b4b582 | 157 | static int legacy_dvb_usb_remote_init(struct dvb_usb_device *d) |
6520342b MCC |
158 | { |
159 | int i, err, rc_interval; | |
d8b4b582 DH |
160 | struct input_dev *input_dev; |
161 | ||
162 | input_dev = input_allocate_device(); | |
163 | if (!input_dev) | |
164 | return -ENOMEM; | |
165 | ||
166 | input_dev->evbit[0] = BIT_MASK(EV_KEY); | |
167 | input_dev->name = "IR-receiver inside an USB DVB receiver"; | |
168 | input_dev->phys = d->rc_phys; | |
169 | usb_to_input_id(d->udev, &input_dev->id); | |
170 | input_dev->dev.parent = &d->udev->dev; | |
171 | d->input_dev = input_dev; | |
172 | d->rc_dev = NULL; | |
6520342b MCC |
173 | |
174 | input_dev->getkeycode = legacy_dvb_usb_getkeycode; | |
175 | input_dev->setkeycode = legacy_dvb_usb_setkeycode; | |
176 | ||
177 | /* set the bits for the keys */ | |
178 | deb_rc("key map size: %d\n", d->props.rc.legacy.rc_key_map_size); | |
179 | for (i = 0; i < d->props.rc.legacy.rc_key_map_size; i++) { | |
180 | deb_rc("setting bit for event %d item %d\n", | |
181 | d->props.rc.legacy.rc_key_map[i].keycode, i); | |
182 | set_bit(d->props.rc.legacy.rc_key_map[i].keycode, input_dev->keybit); | |
183 | } | |
184 | ||
185 | /* setting these two values to non-zero, we have to manage key repeats */ | |
186 | input_dev->rep[REP_PERIOD] = d->props.rc.legacy.rc_interval; | |
187 | input_dev->rep[REP_DELAY] = d->props.rc.legacy.rc_interval + 150; | |
188 | ||
189 | input_set_drvdata(input_dev, d); | |
190 | ||
191 | err = input_register_device(input_dev); | |
192 | if (err) | |
193 | input_free_device(input_dev); | |
194 | ||
195 | rc_interval = d->props.rc.legacy.rc_interval; | |
196 | ||
197 | INIT_DELAYED_WORK(&d->rc_query_work, legacy_dvb_usb_read_remote_control); | |
198 | ||
199 | info("schedule remote query interval to %d msecs.", rc_interval); | |
200 | schedule_delayed_work(&d->rc_query_work, | |
201 | msecs_to_jiffies(rc_interval)); | |
202 | ||
203 | d->state |= DVB_USB_STATE_REMOTE; | |
204 | ||
205 | return err; | |
206 | } | |
207 | ||
208 | /* Remote-control poll function - called every dib->rc_query_interval ms to see | |
209 | * whether the remote control has received anything. | |
210 | * | |
211 | * TODO: Fix the repeat rate of the input device. | |
212 | */ | |
213 | static void dvb_usb_read_remote_control(struct work_struct *work) | |
214 | { | |
215 | struct dvb_usb_device *d = | |
216 | container_of(work, struct dvb_usb_device, rc_query_work.work); | |
217 | int err; | |
218 | ||
219 | /* TODO: need a lock here. We can simply skip checking for the remote control | |
220 | if we're busy. */ | |
221 | ||
222 | /* when the parameter has been set to 1 via sysfs while the | |
223 | * driver was running, or when bulk mode is enabled after IR init | |
224 | */ | |
225 | if (dvb_usb_disable_rc_polling || d->props.rc.core.bulk_mode) | |
226 | return; | |
227 | ||
228 | err = d->props.rc.core.rc_query(d); | |
229 | if (err) | |
230 | err("error %d while querying for an remote control event.", err); | |
231 | ||
232 | schedule_delayed_work(&d->rc_query_work, | |
233 | msecs_to_jiffies(d->props.rc.core.rc_interval)); | |
234 | } | |
235 | ||
d8b4b582 | 236 | static int rc_core_dvb_usb_remote_init(struct dvb_usb_device *d) |
6520342b MCC |
237 | { |
238 | int err, rc_interval; | |
d8b4b582 DH |
239 | struct rc_dev *dev; |
240 | ||
241 | dev = rc_allocate_device(); | |
242 | if (!dev) | |
243 | return -ENOMEM; | |
6520342b | 244 | |
d8b4b582 DH |
245 | dev->driver_name = d->props.rc.core.module_name; |
246 | dev->map_name = d->props.rc.core.rc_codes; | |
247 | dev->change_protocol = d->props.rc.core.change_protocol; | |
248 | dev->allowed_protos = d->props.rc.core.allowed_protos; | |
249 | dev->driver_type = RC_DRIVER_SCANCODE; | |
250 | usb_to_input_id(d->udev, &dev->input_id); | |
251 | dev->input_name = "IR-receiver inside an USB DVB receiver"; | |
252 | dev->input_phys = d->rc_phys; | |
253 | dev->dev.parent = &d->udev->dev; | |
254 | dev->priv = d; | |
255 | ||
256 | err = rc_register_device(dev); | |
257 | if (err < 0) { | |
258 | rc_free_device(dev); | |
6520342b | 259 | return err; |
d8b4b582 DH |
260 | } |
261 | ||
262 | d->input_dev = NULL; | |
263 | d->rc_dev = dev; | |
6520342b MCC |
264 | |
265 | if (!d->props.rc.core.rc_query || d->props.rc.core.bulk_mode) | |
266 | return 0; | |
267 | ||
268 | /* Polling mode - initialize a work queue for handling it */ | |
269 | INIT_DELAYED_WORK(&d->rc_query_work, dvb_usb_read_remote_control); | |
270 | ||
271 | rc_interval = d->props.rc.core.rc_interval; | |
272 | ||
273 | info("schedule remote query interval to %d msecs.", rc_interval); | |
274 | schedule_delayed_work(&d->rc_query_work, | |
275 | msecs_to_jiffies(rc_interval)); | |
276 | ||
277 | return 0; | |
278 | } | |
279 | ||
776338e1 JS |
280 | int dvb_usb_remote_init(struct dvb_usb_device *d) |
281 | { | |
b07b4783 | 282 | int err; |
b7df3910 | 283 | |
6520342b MCC |
284 | if (dvb_usb_disable_rc_polling) |
285 | return 0; | |
286 | ||
287 | if (d->props.rc.legacy.rc_key_map && d->props.rc.legacy.rc_query) | |
288 | d->props.rc.mode = DVB_RC_LEGACY; | |
289 | else if (d->props.rc.core.rc_codes) | |
290 | d->props.rc.mode = DVB_RC_CORE; | |
291 | else | |
776338e1 JS |
292 | return 0; |
293 | ||
b7df3910 | 294 | usb_make_path(d->udev, d->rc_phys, sizeof(d->rc_phys)); |
4fcd7d8f | 295 | strlcat(d->rc_phys, "/ir0", sizeof(d->rc_phys)); |
b7df3910 | 296 | |
776338e1 | 297 | /* Start the remote-control polling. */ |
f72a27b8 MCC |
298 | if (d->props.rc.legacy.rc_interval < 40) |
299 | d->props.rc.legacy.rc_interval = 100; /* default */ | |
776338e1 | 300 | |
6520342b | 301 | if (d->props.rc.mode == DVB_RC_LEGACY) |
d8b4b582 | 302 | err = legacy_dvb_usb_remote_init(d); |
6520342b | 303 | else |
d8b4b582 | 304 | err = rc_core_dvb_usb_remote_init(d); |
6520342b MCC |
305 | if (err) |
306 | return err; | |
776338e1 JS |
307 | |
308 | d->state |= DVB_USB_STATE_REMOTE; | |
309 | ||
310 | return 0; | |
311 | } | |
312 | ||
313 | int dvb_usb_remote_exit(struct dvb_usb_device *d) | |
314 | { | |
315 | if (d->state & DVB_USB_STATE_REMOTE) { | |
e1af4980 | 316 | cancel_rearming_delayed_work(&d->rc_query_work); |
776338e1 | 317 | flush_scheduled_work(); |
6520342b | 318 | if (d->props.rc.mode == DVB_RC_LEGACY) |
d8b4b582 | 319 | input_unregister_device(d->input_dev); |
6520342b | 320 | else |
d8b4b582 | 321 | rc_unregister_device(d->rc_dev); |
776338e1 JS |
322 | } |
323 | d->state &= ~DVB_USB_STATE_REMOTE; | |
324 | return 0; | |
325 | } | |
326 | ||
327 | #define DVB_USB_RC_NEC_EMPTY 0x00 | |
328 | #define DVB_USB_RC_NEC_KEY_PRESSED 0x01 | |
329 | #define DVB_USB_RC_NEC_KEY_REPEATED 0x02 | |
330 | int dvb_usb_nec_rc_key_to_event(struct dvb_usb_device *d, | |
331 | u8 keybuf[5], u32 *event, int *state) | |
332 | { | |
333 | int i; | |
f72a27b8 | 334 | struct ir_scancode *keymap = d->props.rc.legacy.rc_key_map; |
776338e1 JS |
335 | *event = 0; |
336 | *state = REMOTE_NO_KEY_PRESSED; | |
337 | switch (keybuf[0]) { | |
338 | case DVB_USB_RC_NEC_EMPTY: | |
339 | break; | |
340 | case DVB_USB_RC_NEC_KEY_PRESSED: | |
341 | if ((u8) ~keybuf[1] != keybuf[2] || | |
342 | (u8) ~keybuf[3] != keybuf[4]) { | |
343 | deb_err("remote control checksum failed.\n"); | |
344 | break; | |
345 | } | |
346 | /* See if we can match the raw key code. */ | |
f72a27b8 | 347 | for (i = 0; i < d->props.rc.legacy.rc_key_map_size; i++) |
2e365883 MCC |
348 | if (rc5_custom(&keymap[i]) == keybuf[1] && |
349 | rc5_data(&keymap[i]) == keybuf[3]) { | |
34abf219 | 350 | *event = keymap[i].keycode; |
776338e1 | 351 | *state = REMOTE_KEY_PRESSED; |
1df896aa | 352 | return 0; |
776338e1 JS |
353 | } |
354 | deb_err("key mapping failed - no appropriate key found in keymapping\n"); | |
355 | break; | |
356 | case DVB_USB_RC_NEC_KEY_REPEATED: | |
357 | *state = REMOTE_KEY_REPEAT; | |
358 | break; | |
359 | default: | |
af901ca1 | 360 | deb_err("unknown type of remote status: %d\n",keybuf[0]); |
776338e1 JS |
361 | break; |
362 | } | |
363 | return 0; | |
364 | } | |
365 | EXPORT_SYMBOL(dvb_usb_nec_rc_key_to_event); |