3  *  OSS emulation layer for the mixer interface
23 MODULE_DESCRIPTION("Mixer OSS emulation for ALSA.");
57 	fmixer->mixer = card->mixer_oss;  in snd_mixer_oss_open()
86 	struct snd_mixer_oss *mixer = fmixer->mixer;  in snd_mixer_oss_info()  local
90 	strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));  in snd_mixer_oss_info()
91 	strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));  in snd_mixer_oss_info()
102 	struct snd_mixer_oss *mixer = fmixer->mixer;  in snd_mixer_oss_info_obsolete()  local
106 	strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));  in snd_mixer_oss_info_obsolete()
107 	strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));  in snd_mixer_oss_info_obsolete()
115 	struct snd_mixer_oss *mixer = fmixer->mixer;  in snd_mixer_oss_caps()  local
118 	if (mixer == NULL)  in snd_mixer_oss_caps()
120 	if (mixer->get_recsrc && mixer->put_recsrc)  in snd_mixer_oss_caps()
127 	struct snd_mixer_oss *mixer = fmixer->mixer;  in snd_mixer_oss_devmask()  local
131 	if (mixer == NULL)  in snd_mixer_oss_devmask()
134 		pslot = &mixer->slots[chn];  in snd_mixer_oss_devmask()
143 	struct snd_mixer_oss *mixer = fmixer->mixer;  in snd_mixer_oss_stereodevs()  local
147 	if (mixer == NULL)  in snd_mixer_oss_stereodevs()
150 		pslot = &mixer->slots[chn];  in snd_mixer_oss_stereodevs()
159 	struct snd_mixer_oss *mixer = fmixer->mixer;  in snd_mixer_oss_recmask()  local
162 	if (mixer == NULL)  in snd_mixer_oss_recmask()
164 	if (mixer->put_recsrc && mixer->get_recsrc) {	/* exclusive */  in snd_mixer_oss_recmask()
165 		result = mixer->mask_recsrc;  in snd_mixer_oss_recmask()
170 			pslot = &mixer->slots[chn];  in snd_mixer_oss_recmask()
180 	struct snd_mixer_oss *mixer = fmixer->mixer;  in snd_mixer_oss_get_recsrc()  local
183 	if (mixer == NULL)  in snd_mixer_oss_get_recsrc()
185 	if (mixer->put_recsrc && mixer->get_recsrc) {	/* exclusive */  in snd_mixer_oss_get_recsrc()
188 		if ((err = mixer->get_recsrc(fmixer, &index)) < 0)  in snd_mixer_oss_get_recsrc()
195 			pslot = &mixer->slots[chn];  in snd_mixer_oss_get_recsrc()
204 	return mixer->oss_recsrc = result;  in snd_mixer_oss_get_recsrc()
209 	struct snd_mixer_oss *mixer = fmixer->mixer;  in snd_mixer_oss_set_recsrc()  local
215 	if (mixer == NULL)  in snd_mixer_oss_set_recsrc()
217 	if (mixer->get_recsrc && mixer->put_recsrc) {	/* exclusive input */  in snd_mixer_oss_set_recsrc()
218 		if (recsrc & ~mixer->oss_recsrc)  in snd_mixer_oss_set_recsrc()
219 			recsrc &= ~mixer->oss_recsrc;  in snd_mixer_oss_set_recsrc()
220 		mixer->put_recsrc(fmixer, ffz(~recsrc));  in snd_mixer_oss_set_recsrc()
221 		mixer->get_recsrc(fmixer, &index);  in snd_mixer_oss_set_recsrc()
225 		pslot = &mixer->slots[chn];  in snd_mixer_oss_set_recsrc()
233 			pslot = &mixer->slots[chn];  in snd_mixer_oss_set_recsrc()
247 	struct snd_mixer_oss *mixer = fmixer->mixer;  in snd_mixer_oss_get_volume()  local
251 	if (mixer == NULL || slot > 30)  in snd_mixer_oss_get_volume()
253 	pslot = &mixer->slots[slot];  in snd_mixer_oss_get_volume()
275 	struct snd_mixer_oss *mixer = fmixer->mixer;  in snd_mixer_oss_set_volume()  local
279 	if (mixer == NULL || slot > 30)  in snd_mixer_oss_set_volume()
281 	pslot = &mixer->slots[slot];  in snd_mixer_oss_set_volume()
380 	fmixer.mixer = card->mixer_oss;  in snd_mixer_oss_ioctl_card()
441 	struct snd_mixer_oss *mixer = card->mixer_oss;
442 	if (mixer)
443 		mixer->mask_recsrc |= 1 << slot;
448 	struct snd_mixer_oss *mixer = card->mixer_oss;
449 	if (mixer && (mixer->mask_recsrc & (1 << slot)))
495 static struct snd_kcontrol *snd_mixer_oss_test_id(struct snd_mixer_oss *mixer, const char *name, in…  in snd_mixer_oss_test_id()  argument
497 	struct snd_card *card = mixer->card;  in snd_mixer_oss_test_id()
792 	struct snd_mixer_oss *mixer = fmixer->mixer;  in snd_mixer_oss_get_recsrc2()  local
807 	kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);  in snd_mixer_oss_get_recsrc2()
817 		if (!(mixer->mask_recsrc & (1 << idx)))  in snd_mixer_oss_get_recsrc2()
819 		pslot = &mixer->slots[idx];  in snd_mixer_oss_get_recsrc2()
842 	struct snd_mixer_oss *mixer = fmixer->mixer;  in snd_mixer_oss_put_recsrc2()  local
858 	kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);  in snd_mixer_oss_put_recsrc2()
866 		if (!(mixer->mask_recsrc & (1 << idx)))  in snd_mixer_oss_put_recsrc2()
868 		pslot = &mixer->slots[idx];  in snd_mixer_oss_put_recsrc2()
900 static int snd_mixer_oss_build_test(struct snd_mixer_oss *mixer, struct slot *slot, const char *nam…  in snd_mixer_oss_build_test()  argument
904 	struct snd_card *card = mixer->card;  in snd_mixer_oss_build_test()
908 	kcontrol = snd_mixer_oss_test_id(mixer, name, index);  in snd_mixer_oss_build_test()
955 static int snd_mixer_oss_build_test_all(struct snd_mixer_oss *mixer,  in snd_mixer_oss_build_test_all()  argument
962 	err = snd_mixer_oss_build_test(mixer, slot, ptr->name, ptr->index,  in snd_mixer_oss_build_test_all()
967 	err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,  in snd_mixer_oss_build_test_all()
972 	err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,  in snd_mixer_oss_build_test_all()
977 	err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,  in snd_mixer_oss_build_test_all()
982 	err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,  in snd_mixer_oss_build_test_all()
987 	err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,  in snd_mixer_oss_build_test_all()
992 	err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,  in snd_mixer_oss_build_test_all()
997 	err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,  in snd_mixer_oss_build_test_all()
1002 	err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,  in snd_mixer_oss_build_test_all()
1007 	err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,  in snd_mixer_oss_build_test_all()
1016  * build an OSS mixer element.
1020 static int snd_mixer_oss_build_input(struct snd_mixer_oss *mixer,  in snd_mixer_oss_build_input()  argument
1031 	if (mixer->slots[ptr->oss_id].get_volume && ! replace_old)  in snd_mixer_oss_build_input()
1036 	if (snd_mixer_oss_build_test_all(mixer, ptr, &slot))  in snd_mixer_oss_build_input()
1038 	down_read(&mixer->card->controls_rwsem);  in snd_mixer_oss_build_input()
1039 	if (ptr->index == 0 && (kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0)) != NULL) {  in snd_mixer_oss_build_input()
1044 			up_read(&mixer->card->controls_rwsem);  in snd_mixer_oss_build_input()
1049 			up_read(&mixer->card->controls_rwsem);  in snd_mixer_oss_build_input()
1065 					up_read(&mixer->card->controls_rwsem);  in snd_mixer_oss_build_input()
1077 	up_read(&mixer->card->controls_rwsem);  in snd_mixer_oss_build_input()
1086 		rslot = &mixer->slots[ptr->oss_id];  in snd_mixer_oss_build_input()
1099 			mixer->mask_recsrc |= 1 << ptr->oss_id;  in snd_mixer_oss_build_input()
1147 	struct snd_mixer_oss *mixer = entry->private_data;  in snd_mixer_oss_proc_read()  local
1150 	mutex_lock(&mixer->reg_mutex);  in snd_mixer_oss_proc_read()
1156 		p = (struct slot *)mixer->slots[i].private_data;  in snd_mixer_oss_proc_read()
1165 	mutex_unlock(&mixer->reg_mutex);  in snd_mixer_oss_proc_read()
1171 	struct snd_mixer_oss *mixer = entry->private_data;  in snd_mixer_oss_proc_write()  local
1192 			mutex_lock(&mixer->reg_mutex);  in snd_mixer_oss_proc_write()
1193 			mixer_slot_clear(&mixer->slots[ch]);  in snd_mixer_oss_proc_write()
1194 			mutex_unlock(&mixer->reg_mutex);  in snd_mixer_oss_proc_write()
1203 		mutex_lock(&mixer->reg_mutex);  in snd_mixer_oss_proc_write()
1204 		slot = (struct slot *)mixer->slots[ch].private_data;  in snd_mixer_oss_proc_write()
1219 		if (snd_mixer_oss_build_input(mixer, tbl, 1, 1) <= 0) {  in snd_mixer_oss_proc_write()
1224 		mutex_unlock(&mixer->reg_mutex);  in snd_mixer_oss_proc_write()
1228 static void snd_mixer_oss_proc_init(struct snd_mixer_oss *mixer)  in snd_mixer_oss_proc_init()  argument
1232 	entry = snd_info_create_card_entry(mixer->card, "oss_mixer",  in snd_mixer_oss_proc_init()
1233 					   mixer->card->proc_root);  in snd_mixer_oss_proc_init()
1240 	entry->private_data = mixer;  in snd_mixer_oss_proc_init()
1245 	mixer->proc_entry = entry;  in snd_mixer_oss_proc_init()
1248 static void snd_mixer_oss_proc_done(struct snd_mixer_oss *mixer)  in snd_mixer_oss_proc_done()  argument
1250 	snd_info_free_entry(mixer->proc_entry);  in snd_mixer_oss_proc_done()
1251 	mixer->proc_entry = NULL;  in snd_mixer_oss_proc_done()
1258 static void snd_mixer_oss_build(struct snd_mixer_oss *mixer)  in snd_mixer_oss_build()  argument
1303 		snd_mixer_oss_build_input(mixer, &table[idx], 0, 0);  in snd_mixer_oss_build()
1304 	if (mixer->mask_recsrc) {  in snd_mixer_oss_build()
1305 		mixer->get_recsrc = snd_mixer_oss_get_recsrc2;  in snd_mixer_oss_build()
1306 		mixer->put_recsrc = snd_mixer_oss_put_recsrc2;  in snd_mixer_oss_build()
1316 	struct snd_mixer_oss *mixer = private;  in snd_mixer_oss_free1()  local
1320 	if (!mixer)  in snd_mixer_oss_free1()
1322 	card = mixer->card;  in snd_mixer_oss_free1()
1323 	if (snd_BUG_ON(mixer != card->mixer_oss))  in snd_mixer_oss_free1()
1327 		struct snd_mixer_oss_slot *chn = &mixer->slots[idx];  in snd_mixer_oss_free1()
1331 	kfree(mixer);  in snd_mixer_oss_free1()
1337 	struct snd_mixer_oss *mixer;  in snd_mixer_oss_notify_handler()  local
1342 		mixer = kcalloc(2, sizeof(*mixer), GFP_KERNEL);  in snd_mixer_oss_notify_handler()
1343 		if (mixer == NULL)  in snd_mixer_oss_notify_handler()
1345 		mutex_init(&mixer->reg_mutex);  in snd_mixer_oss_notify_handler()
1350 				"unable to register OSS mixer device %i:%i\n",  in snd_mixer_oss_notify_handler()
1352 			kfree(mixer);  in snd_mixer_oss_notify_handler()
1355 		mixer->oss_dev_alloc = 1;  in snd_mixer_oss_notify_handler()
1356 		mixer->card = card;  in snd_mixer_oss_notify_handler()
1358 			strlcpy(mixer->name, card->mixername, sizeof(mixer->name));  in snd_mixer_oss_notify_handler()
1360 			snprintf(mixer->name, sizeof(mixer->name),  in snd_mixer_oss_notify_handler()
1361 				 "mixer%i", card->number);  in snd_mixer_oss_notify_handler()
1365 				      mixer->name);  in snd_mixer_oss_notify_handler()
1368 			mixer->slots[idx].number = idx;  in snd_mixer_oss_notify_handler()
1369 		card->mixer_oss = mixer;  in snd_mixer_oss_notify_handler()
1370 		snd_mixer_oss_build(mixer);  in snd_mixer_oss_notify_handler()
1371 		snd_mixer_oss_proc_init(mixer);  in snd_mixer_oss_notify_handler()
1373 		mixer = card->mixer_oss;  in snd_mixer_oss_notify_handler()
1374 		if (mixer == NULL)  in snd_mixer_oss_notify_handler()
1376 		if (mixer->oss_dev_alloc) {  in snd_mixer_oss_notify_handler()
1378 			snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIXERS, mixer->card->number);  in snd_mixer_oss_notify_handler()
1380 			snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0);  in snd_mixer_oss_notify_handler()
1381 			mixer->oss_dev_alloc = 0;  in snd_mixer_oss_notify_handler()
1385 		snd_mixer_oss_proc_done(mixer);  in snd_mixer_oss_notify_handler()
1386 		return snd_mixer_oss_free1(mixer);  in snd_mixer_oss_notify_handler()