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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Jack abstraction layer
4 *
5 * Copyright 2008 Wolfson Microelectronics
6 */
7
8#include <linux/input.h>
9#include <linux/slab.h>
10#include <linux/module.h>
11#include <sound/jack.h>
12#include <sound/core.h>
13#include <sound/control.h>
14
15struct snd_jack_kctl {
16 struct snd_kcontrol *kctl;
17 struct list_head list; /* list of controls belong to the same jack */
18 unsigned int mask_bits; /* only masked status bits are reported via kctl */
19};
20
21#ifdef CONFIG_SND_JACK_INPUT_DEV
22static int jack_switch_types[SND_JACK_SWITCH_TYPES] = {
23 SW_HEADPHONE_INSERT,
24 SW_MICROPHONE_INSERT,
25 SW_LINEOUT_INSERT,
26 SW_JACK_PHYSICAL_INSERT,
27 SW_VIDEOOUT_INSERT,
28 SW_LINEIN_INSERT,
29};
30#endif /* CONFIG_SND_JACK_INPUT_DEV */
31
32static int snd_jack_dev_disconnect(struct snd_device *device)
33{
34#ifdef CONFIG_SND_JACK_INPUT_DEV
35 struct snd_jack *jack = device->device_data;
36
37 if (!jack->input_dev)
38 return 0;
39
40 /* If the input device is registered with the input subsystem
41 * then we need to use a different deallocator. */
42 if (jack->registered)
43 input_unregister_device(jack->input_dev);
44 else
45 input_free_device(jack->input_dev);
46 jack->input_dev = NULL;
47#endif /* CONFIG_SND_JACK_INPUT_DEV */
48 return 0;
49}
50
51static int snd_jack_dev_free(struct snd_device *device)
52{
53 struct snd_jack *jack = device->device_data;
54 struct snd_card *card = device->card;
55 struct snd_jack_kctl *jack_kctl, *tmp_jack_kctl;
56
57 list_for_each_entry_safe(jack_kctl, tmp_jack_kctl, &jack->kctl_list, list) {
58 list_del_init(&jack_kctl->list);
59 snd_ctl_remove(card, jack_kctl->kctl);
60 }
61 if (jack->private_free)
62 jack->private_free(jack);
63
64 snd_jack_dev_disconnect(device);
65
66 kfree(jack->id);
67 kfree(jack);
68
69 return 0;
70}
71
72#ifdef CONFIG_SND_JACK_INPUT_DEV
73static int snd_jack_dev_register(struct snd_device *device)
74{
75 struct snd_jack *jack = device->device_data;
76 struct snd_card *card = device->card;
77 int err, i;
78
79 snprintf(jack->name, sizeof(jack->name), "%s %s",
80 card->shortname, jack->id);
81
82 if (!jack->input_dev)
83 return 0;
84
85 jack->input_dev->name = jack->name;
86
87 /* Default to the sound card device. */
88 if (!jack->input_dev->dev.parent)
89 jack->input_dev->dev.parent = snd_card_get_device_link(card);
90
91 /* Add capabilities for any keys that are enabled */
92 for (i = 0; i < ARRAY_SIZE(jack->key); i++) {
93 int testbit = SND_JACK_BTN_0 >> i;
94
95 if (!(jack->type & testbit))
96 continue;
97
98 if (!jack->key[i])
99 jack->key[i] = BTN_0 + i;
100
101 input_set_capability(jack->input_dev, EV_KEY, jack->key[i]);
102 }
103
104 err = input_register_device(jack->input_dev);
105 if (err == 0)
106 jack->registered = 1;
107
108 return err;
109}
110#endif /* CONFIG_SND_JACK_INPUT_DEV */
111
112static void snd_jack_kctl_private_free(struct snd_kcontrol *kctl)
113{
114 struct snd_jack_kctl *jack_kctl;
115
116 jack_kctl = kctl->private_data;
117 if (jack_kctl) {
118 list_del(&jack_kctl->list);
119 kfree(jack_kctl);
120 }
121}
122
123static void snd_jack_kctl_add(struct snd_jack *jack, struct snd_jack_kctl *jack_kctl)
124{
125 list_add_tail(&jack_kctl->list, &jack->kctl_list);
126}
127
128static struct snd_jack_kctl * snd_jack_kctl_new(struct snd_card *card, const char *name, unsigned int mask)
129{
130 struct snd_kcontrol *kctl;
131 struct snd_jack_kctl *jack_kctl;
132 int err;
133
134 kctl = snd_kctl_jack_new(name, card);
135 if (!kctl)
136 return NULL;
137
138 err = snd_ctl_add(card, kctl);
139 if (err < 0)
140 return NULL;
141
142 jack_kctl = kzalloc(sizeof(*jack_kctl), GFP_KERNEL);
143
144 if (!jack_kctl)
145 goto error;
146
147 jack_kctl->kctl = kctl;
148 jack_kctl->mask_bits = mask;
149
150 kctl->private_data = jack_kctl;
151 kctl->private_free = snd_jack_kctl_private_free;
152
153 return jack_kctl;
154error:
155 snd_ctl_free_one(kctl);
156 return NULL;
157}
158
159/**
160 * snd_jack_add_new_kctl - Create a new snd_jack_kctl and add it to jack
161 * @jack: the jack instance which the kctl will attaching to
162 * @name: the name for the snd_kcontrol object
163 * @mask: a bitmask of enum snd_jack_type values that can be detected
164 * by this snd_jack_kctl object.
165 *
166 * Creates a new snd_kcontrol object and adds it to the jack kctl_list.
167 *
168 * Return: Zero if successful, or a negative error code on failure.
169 */
170int snd_jack_add_new_kctl(struct snd_jack *jack, const char * name, int mask)
171{
172 struct snd_jack_kctl *jack_kctl;
173
174 jack_kctl = snd_jack_kctl_new(jack->card, name, mask);
175 if (!jack_kctl)
176 return -ENOMEM;
177
178 snd_jack_kctl_add(jack, jack_kctl);
179 return 0;
180}
181EXPORT_SYMBOL(snd_jack_add_new_kctl);
182
183/**
184 * snd_jack_new - Create a new jack
185 * @card: the card instance
186 * @id: an identifying string for this jack
187 * @type: a bitmask of enum snd_jack_type values that can be detected by
188 * this jack
189 * @jjack: Used to provide the allocated jack object to the caller.
190 * @initial_kctl: if true, create a kcontrol and add it to the jack list.
191 * @phantom_jack: Don't create a input device for phantom jacks.
192 *
193 * Creates a new jack object.
194 *
195 * Return: Zero if successful, or a negative error code on failure.
196 * On success @jjack will be initialised.
197 */
198int snd_jack_new(struct snd_card *card, const char *id, int type,
199 struct snd_jack **jjack, bool initial_kctl, bool phantom_jack)
200{
201 struct snd_jack *jack;
202 struct snd_jack_kctl *jack_kctl = NULL;
203 int err;
204 static struct snd_device_ops ops = {
205 .dev_free = snd_jack_dev_free,
206#ifdef CONFIG_SND_JACK_INPUT_DEV
207 .dev_register = snd_jack_dev_register,
208 .dev_disconnect = snd_jack_dev_disconnect,
209#endif /* CONFIG_SND_JACK_INPUT_DEV */
210 };
211
212 if (initial_kctl) {
213 jack_kctl = snd_jack_kctl_new(card, id, type);
214 if (!jack_kctl)
215 return -ENOMEM;
216 }
217
218 jack = kzalloc(sizeof(struct snd_jack), GFP_KERNEL);
219 if (jack == NULL)
220 return -ENOMEM;
221
222 jack->id = kstrdup(id, GFP_KERNEL);
223
224 /* don't creat input device for phantom jack */
225 if (!phantom_jack) {
226#ifdef CONFIG_SND_JACK_INPUT_DEV
227 int i;
228
229 jack->input_dev = input_allocate_device();
230 if (jack->input_dev == NULL) {
231 err = -ENOMEM;
232 goto fail_input;
233 }
234
235 jack->input_dev->phys = "ALSA";
236
237 jack->type = type;
238
239 for (i = 0; i < SND_JACK_SWITCH_TYPES; i++)
240 if (type & (1 << i))
241 input_set_capability(jack->input_dev, EV_SW,
242 jack_switch_types[i]);
243
244#endif /* CONFIG_SND_JACK_INPUT_DEV */
245 }
246
247 err = snd_device_new(card, SNDRV_DEV_JACK, jack, &ops);
248 if (err < 0)
249 goto fail_input;
250
251 jack->card = card;
252 INIT_LIST_HEAD(&jack->kctl_list);
253
254 if (initial_kctl)
255 snd_jack_kctl_add(jack, jack_kctl);
256
257 *jjack = jack;
258
259 return 0;
260
261fail_input:
262#ifdef CONFIG_SND_JACK_INPUT_DEV
263 input_free_device(jack->input_dev);
264#endif
265 kfree(jack->id);
266 kfree(jack);
267 return err;
268}
269EXPORT_SYMBOL(snd_jack_new);
270
271#ifdef CONFIG_SND_JACK_INPUT_DEV
272/**
273 * snd_jack_set_parent - Set the parent device for a jack
274 *
275 * @jack: The jack to configure
276 * @parent: The device to set as parent for the jack.
277 *
278 * Set the parent for the jack devices in the device tree. This
279 * function is only valid prior to registration of the jack. If no
280 * parent is configured then the parent device will be the sound card.
281 */
282void snd_jack_set_parent(struct snd_jack *jack, struct device *parent)
283{
284 WARN_ON(jack->registered);
285 if (!jack->input_dev)
286 return;
287
288 jack->input_dev->dev.parent = parent;
289}
290EXPORT_SYMBOL(snd_jack_set_parent);
291
292/**
293 * snd_jack_set_key - Set a key mapping on a jack
294 *
295 * @jack: The jack to configure
296 * @type: Jack report type for this key
297 * @keytype: Input layer key type to be reported
298 *
299 * Map a SND_JACK_BTN_* button type to an input layer key, allowing
300 * reporting of keys on accessories via the jack abstraction. If no
301 * mapping is provided but keys are enabled in the jack type then
302 * BTN_n numeric buttons will be reported.
303 *
304 * If jacks are not reporting via the input API this call will have no
305 * effect.
306 *
307 * Note that this is intended to be use by simple devices with small
308 * numbers of keys that can be reported. It is also possible to
309 * access the input device directly - devices with complex input
310 * capabilities on accessories should consider doing this rather than
311 * using this abstraction.
312 *
313 * This function may only be called prior to registration of the jack.
314 *
315 * Return: Zero if successful, or a negative error code on failure.
316 */
317int snd_jack_set_key(struct snd_jack *jack, enum snd_jack_types type,
318 int keytype)
319{
320 int key = fls(SND_JACK_BTN_0) - fls(type);
321
322 WARN_ON(jack->registered);
323
324 if (!keytype || key >= ARRAY_SIZE(jack->key))
325 return -EINVAL;
326
327 jack->type |= type;
328 jack->key[key] = keytype;
329 return 0;
330}
331EXPORT_SYMBOL(snd_jack_set_key);
332#endif /* CONFIG_SND_JACK_INPUT_DEV */
333
334/**
335 * snd_jack_report - Report the current status of a jack
336 *
337 * @jack: The jack to report status for
338 * @status: The current status of the jack
339 */
340void snd_jack_report(struct snd_jack *jack, int status)
341{
342 struct snd_jack_kctl *jack_kctl;
343#ifdef CONFIG_SND_JACK_INPUT_DEV
344 int i;
345#endif
346
347 if (!jack)
348 return;
349
350 list_for_each_entry(jack_kctl, &jack->kctl_list, list)
351 snd_kctl_jack_report(jack->card, jack_kctl->kctl,
352 status & jack_kctl->mask_bits);
353
354#ifdef CONFIG_SND_JACK_INPUT_DEV
355 if (!jack->input_dev)
356 return;
357
358 for (i = 0; i < ARRAY_SIZE(jack->key); i++) {
359 int testbit = SND_JACK_BTN_0 >> i;
360
361 if (jack->type & testbit)
362 input_report_key(jack->input_dev, jack->key[i],
363 status & testbit);
364 }
365
366 for (i = 0; i < ARRAY_SIZE(jack_switch_types); i++) {
367 int testbit = 1 << i;
368 if (jack->type & testbit)
369 input_report_switch(jack->input_dev,
370 jack_switch_types[i],
371 status & testbit);
372 }
373
374 input_sync(jack->input_dev);
375#endif /* CONFIG_SND_JACK_INPUT_DEV */
376}
377EXPORT_SYMBOL(snd_jack_report);
1/*
2 * Jack abstraction layer
3 *
4 * Copyright 2008 Wolfson Microelectronics
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 *
20 */
21
22#include <linux/input.h>
23#include <linux/slab.h>
24#include <linux/module.h>
25#include <sound/jack.h>
26#include <sound/core.h>
27#include <sound/control.h>
28
29struct snd_jack_kctl {
30 struct snd_kcontrol *kctl;
31 struct list_head list; /* list of controls belong to the same jack */
32 unsigned int mask_bits; /* only masked status bits are reported via kctl */
33};
34
35#ifdef CONFIG_SND_JACK_INPUT_DEV
36static int jack_switch_types[SND_JACK_SWITCH_TYPES] = {
37 SW_HEADPHONE_INSERT,
38 SW_MICROPHONE_INSERT,
39 SW_LINEOUT_INSERT,
40 SW_JACK_PHYSICAL_INSERT,
41 SW_VIDEOOUT_INSERT,
42 SW_LINEIN_INSERT,
43};
44#endif /* CONFIG_SND_JACK_INPUT_DEV */
45
46static int snd_jack_dev_disconnect(struct snd_device *device)
47{
48#ifdef CONFIG_SND_JACK_INPUT_DEV
49 struct snd_jack *jack = device->device_data;
50
51 if (!jack->input_dev)
52 return 0;
53
54 /* If the input device is registered with the input subsystem
55 * then we need to use a different deallocator. */
56 if (jack->registered)
57 input_unregister_device(jack->input_dev);
58 else
59 input_free_device(jack->input_dev);
60 jack->input_dev = NULL;
61#endif /* CONFIG_SND_JACK_INPUT_DEV */
62 return 0;
63}
64
65static int snd_jack_dev_free(struct snd_device *device)
66{
67 struct snd_jack *jack = device->device_data;
68 struct snd_card *card = device->card;
69 struct snd_jack_kctl *jack_kctl, *tmp_jack_kctl;
70
71 list_for_each_entry_safe(jack_kctl, tmp_jack_kctl, &jack->kctl_list, list) {
72 list_del_init(&jack_kctl->list);
73 snd_ctl_remove(card, jack_kctl->kctl);
74 }
75 if (jack->private_free)
76 jack->private_free(jack);
77
78 snd_jack_dev_disconnect(device);
79
80 kfree(jack->id);
81 kfree(jack);
82
83 return 0;
84}
85
86#ifdef CONFIG_SND_JACK_INPUT_DEV
87static int snd_jack_dev_register(struct snd_device *device)
88{
89 struct snd_jack *jack = device->device_data;
90 struct snd_card *card = device->card;
91 int err, i;
92
93 snprintf(jack->name, sizeof(jack->name), "%s %s",
94 card->shortname, jack->id);
95
96 if (!jack->input_dev)
97 return 0;
98
99 jack->input_dev->name = jack->name;
100
101 /* Default to the sound card device. */
102 if (!jack->input_dev->dev.parent)
103 jack->input_dev->dev.parent = snd_card_get_device_link(card);
104
105 /* Add capabilities for any keys that are enabled */
106 for (i = 0; i < ARRAY_SIZE(jack->key); i++) {
107 int testbit = SND_JACK_BTN_0 >> i;
108
109 if (!(jack->type & testbit))
110 continue;
111
112 if (!jack->key[i])
113 jack->key[i] = BTN_0 + i;
114
115 input_set_capability(jack->input_dev, EV_KEY, jack->key[i]);
116 }
117
118 err = input_register_device(jack->input_dev);
119 if (err == 0)
120 jack->registered = 1;
121
122 return err;
123}
124#endif /* CONFIG_SND_JACK_INPUT_DEV */
125
126static void snd_jack_kctl_private_free(struct snd_kcontrol *kctl)
127{
128 struct snd_jack_kctl *jack_kctl;
129
130 jack_kctl = kctl->private_data;
131 if (jack_kctl) {
132 list_del(&jack_kctl->list);
133 kfree(jack_kctl);
134 }
135}
136
137static void snd_jack_kctl_add(struct snd_jack *jack, struct snd_jack_kctl *jack_kctl)
138{
139 list_add_tail(&jack_kctl->list, &jack->kctl_list);
140}
141
142static struct snd_jack_kctl * snd_jack_kctl_new(struct snd_card *card, const char *name, unsigned int mask)
143{
144 struct snd_kcontrol *kctl;
145 struct snd_jack_kctl *jack_kctl;
146 int err;
147
148 kctl = snd_kctl_jack_new(name, card);
149 if (!kctl)
150 return NULL;
151
152 err = snd_ctl_add(card, kctl);
153 if (err < 0)
154 return NULL;
155
156 jack_kctl = kzalloc(sizeof(*jack_kctl), GFP_KERNEL);
157
158 if (!jack_kctl)
159 goto error;
160
161 jack_kctl->kctl = kctl;
162 jack_kctl->mask_bits = mask;
163
164 kctl->private_data = jack_kctl;
165 kctl->private_free = snd_jack_kctl_private_free;
166
167 return jack_kctl;
168error:
169 snd_ctl_free_one(kctl);
170 return NULL;
171}
172
173/**
174 * snd_jack_add_new_kctl - Create a new snd_jack_kctl and add it to jack
175 * @jack: the jack instance which the kctl will attaching to
176 * @name: the name for the snd_kcontrol object
177 * @mask: a bitmask of enum snd_jack_type values that can be detected
178 * by this snd_jack_kctl object.
179 *
180 * Creates a new snd_kcontrol object and adds it to the jack kctl_list.
181 *
182 * Return: Zero if successful, or a negative error code on failure.
183 */
184int snd_jack_add_new_kctl(struct snd_jack *jack, const char * name, int mask)
185{
186 struct snd_jack_kctl *jack_kctl;
187
188 jack_kctl = snd_jack_kctl_new(jack->card, name, mask);
189 if (!jack_kctl)
190 return -ENOMEM;
191
192 snd_jack_kctl_add(jack, jack_kctl);
193 return 0;
194}
195EXPORT_SYMBOL(snd_jack_add_new_kctl);
196
197/**
198 * snd_jack_new - Create a new jack
199 * @card: the card instance
200 * @id: an identifying string for this jack
201 * @type: a bitmask of enum snd_jack_type values that can be detected by
202 * this jack
203 * @jjack: Used to provide the allocated jack object to the caller.
204 * @initial_kctl: if true, create a kcontrol and add it to the jack list.
205 * @phantom_jack: Don't create a input device for phantom jacks.
206 *
207 * Creates a new jack object.
208 *
209 * Return: Zero if successful, or a negative error code on failure.
210 * On success @jjack will be initialised.
211 */
212int snd_jack_new(struct snd_card *card, const char *id, int type,
213 struct snd_jack **jjack, bool initial_kctl, bool phantom_jack)
214{
215 struct snd_jack *jack;
216 struct snd_jack_kctl *jack_kctl = NULL;
217 int err;
218 static struct snd_device_ops ops = {
219 .dev_free = snd_jack_dev_free,
220#ifdef CONFIG_SND_JACK_INPUT_DEV
221 .dev_register = snd_jack_dev_register,
222 .dev_disconnect = snd_jack_dev_disconnect,
223#endif /* CONFIG_SND_JACK_INPUT_DEV */
224 };
225
226 if (initial_kctl) {
227 jack_kctl = snd_jack_kctl_new(card, id, type);
228 if (!jack_kctl)
229 return -ENOMEM;
230 }
231
232 jack = kzalloc(sizeof(struct snd_jack), GFP_KERNEL);
233 if (jack == NULL)
234 return -ENOMEM;
235
236 jack->id = kstrdup(id, GFP_KERNEL);
237
238 /* don't creat input device for phantom jack */
239 if (!phantom_jack) {
240#ifdef CONFIG_SND_JACK_INPUT_DEV
241 int i;
242
243 jack->input_dev = input_allocate_device();
244 if (jack->input_dev == NULL) {
245 err = -ENOMEM;
246 goto fail_input;
247 }
248
249 jack->input_dev->phys = "ALSA";
250
251 jack->type = type;
252
253 for (i = 0; i < SND_JACK_SWITCH_TYPES; i++)
254 if (type & (1 << i))
255 input_set_capability(jack->input_dev, EV_SW,
256 jack_switch_types[i]);
257
258#endif /* CONFIG_SND_JACK_INPUT_DEV */
259 }
260
261 err = snd_device_new(card, SNDRV_DEV_JACK, jack, &ops);
262 if (err < 0)
263 goto fail_input;
264
265 jack->card = card;
266 INIT_LIST_HEAD(&jack->kctl_list);
267
268 if (initial_kctl)
269 snd_jack_kctl_add(jack, jack_kctl);
270
271 *jjack = jack;
272
273 return 0;
274
275fail_input:
276#ifdef CONFIG_SND_JACK_INPUT_DEV
277 input_free_device(jack->input_dev);
278#endif
279 kfree(jack->id);
280 kfree(jack);
281 return err;
282}
283EXPORT_SYMBOL(snd_jack_new);
284
285#ifdef CONFIG_SND_JACK_INPUT_DEV
286/**
287 * snd_jack_set_parent - Set the parent device for a jack
288 *
289 * @jack: The jack to configure
290 * @parent: The device to set as parent for the jack.
291 *
292 * Set the parent for the jack devices in the device tree. This
293 * function is only valid prior to registration of the jack. If no
294 * parent is configured then the parent device will be the sound card.
295 */
296void snd_jack_set_parent(struct snd_jack *jack, struct device *parent)
297{
298 WARN_ON(jack->registered);
299 if (!jack->input_dev)
300 return;
301
302 jack->input_dev->dev.parent = parent;
303}
304EXPORT_SYMBOL(snd_jack_set_parent);
305
306/**
307 * snd_jack_set_key - Set a key mapping on a jack
308 *
309 * @jack: The jack to configure
310 * @type: Jack report type for this key
311 * @keytype: Input layer key type to be reported
312 *
313 * Map a SND_JACK_BTN_ button type to an input layer key, allowing
314 * reporting of keys on accessories via the jack abstraction. If no
315 * mapping is provided but keys are enabled in the jack type then
316 * BTN_n numeric buttons will be reported.
317 *
318 * If jacks are not reporting via the input API this call will have no
319 * effect.
320 *
321 * Note that this is intended to be use by simple devices with small
322 * numbers of keys that can be reported. It is also possible to
323 * access the input device directly - devices with complex input
324 * capabilities on accessories should consider doing this rather than
325 * using this abstraction.
326 *
327 * This function may only be called prior to registration of the jack.
328 *
329 * Return: Zero if successful, or a negative error code on failure.
330 */
331int snd_jack_set_key(struct snd_jack *jack, enum snd_jack_types type,
332 int keytype)
333{
334 int key = fls(SND_JACK_BTN_0) - fls(type);
335
336 WARN_ON(jack->registered);
337
338 if (!keytype || key >= ARRAY_SIZE(jack->key))
339 return -EINVAL;
340
341 jack->type |= type;
342 jack->key[key] = keytype;
343 return 0;
344}
345EXPORT_SYMBOL(snd_jack_set_key);
346#endif /* CONFIG_SND_JACK_INPUT_DEV */
347
348/**
349 * snd_jack_report - Report the current status of a jack
350 *
351 * @jack: The jack to report status for
352 * @status: The current status of the jack
353 */
354void snd_jack_report(struct snd_jack *jack, int status)
355{
356 struct snd_jack_kctl *jack_kctl;
357#ifdef CONFIG_SND_JACK_INPUT_DEV
358 int i;
359#endif
360
361 if (!jack)
362 return;
363
364 list_for_each_entry(jack_kctl, &jack->kctl_list, list)
365 snd_kctl_jack_report(jack->card, jack_kctl->kctl,
366 status & jack_kctl->mask_bits);
367
368#ifdef CONFIG_SND_JACK_INPUT_DEV
369 if (!jack->input_dev)
370 return;
371
372 for (i = 0; i < ARRAY_SIZE(jack->key); i++) {
373 int testbit = SND_JACK_BTN_0 >> i;
374
375 if (jack->type & testbit)
376 input_report_key(jack->input_dev, jack->key[i],
377 status & testbit);
378 }
379
380 for (i = 0; i < ARRAY_SIZE(jack_switch_types); i++) {
381 int testbit = 1 << i;
382 if (jack->type & testbit)
383 input_report_switch(jack->input_dev,
384 jack_switch_types[i],
385 status & testbit);
386 }
387
388 input_sync(jack->input_dev);
389#endif /* CONFIG_SND_JACK_INPUT_DEV */
390}
391EXPORT_SYMBOL(snd_jack_report);