2  *  Dummy soundcard
40 MODULE_DESCRIPTION("Dummy soundcard (/dev/null)");
42 MODULE_SUPPORTED_DEVICE("{{ALSA,Dummy soundcard}}");
74 MODULE_PARM_DESC(index, "Index value for dummy soundcard.");
76 MODULE_PARM_DESC(id, "ID string for dummy soundcard.");
78 MODULE_PARM_DESC(enable, "Enable this dummy soundcard.");
82 MODULE_PARM_DESC(pcm_devs, "PCM devices # (0-4) for dummy driver.");
84 MODULE_PARM_DESC(pcm_substreams, "PCM substreams # (1-128) for dummy driver.");
86 //MODULE_PARM_DESC(midi_devs, "MIDI devices # (0-2) for dummy driver.");
559 	struct snd_dummy *dummy = snd_pcm_substream_chip(substream);  in dummy_pcm_open()  local
560 	struct dummy_model *model = dummy->model;  in dummy_pcm_open()
576 	runtime->hw = dummy->pcm_hw;  in dummy_pcm_open()
609  * dummy buffer handling
695 static int snd_card_dummy_pcm(struct snd_dummy *dummy, int device,  in snd_card_dummy_pcm()  argument
702 	err = snd_pcm_new(dummy->card, "Dummy PCM", device,  in snd_card_dummy_pcm()
706 	dummy->pcm = pcm;  in snd_card_dummy_pcm()
713 	pcm->private_data = dummy;  in snd_card_dummy_pcm()
715 	strcpy(pcm->name, "Dummy PCM");  in snd_card_dummy_pcm()
751 	struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol);  in snd_dummy_volume_get()  local
754 	spin_lock_irq(&dummy->mixer_lock);  in snd_dummy_volume_get()
755 	ucontrol->value.integer.value[0] = dummy->mixer_volume[addr][0];  in snd_dummy_volume_get()
756 	ucontrol->value.integer.value[1] = dummy->mixer_volume[addr][1];  in snd_dummy_volume_get()
757 	spin_unlock_irq(&dummy->mixer_lock);  in snd_dummy_volume_get()
764 	struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol);  in snd_dummy_volume_put()  local
778 	spin_lock_irq(&dummy->mixer_lock);  in snd_dummy_volume_put()
779 	change = dummy->mixer_volume[addr][0] != left ||  in snd_dummy_volume_put()
780 	         dummy->mixer_volume[addr][1] != right;  in snd_dummy_volume_put()
781 	dummy->mixer_volume[addr][0] = left;  in snd_dummy_volume_put()
782 	dummy->mixer_volume[addr][1] = right;  in snd_dummy_volume_put()
783 	spin_unlock_irq(&dummy->mixer_lock);  in snd_dummy_volume_put()
800 	struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol);  in snd_dummy_capsrc_get()  local
803 	spin_lock_irq(&dummy->mixer_lock);  in snd_dummy_capsrc_get()
804 	ucontrol->value.integer.value[0] = dummy->capture_source[addr][0];  in snd_dummy_capsrc_get()
805 	ucontrol->value.integer.value[1] = dummy->capture_source[addr][1];  in snd_dummy_capsrc_get()
806 	spin_unlock_irq(&dummy->mixer_lock);  in snd_dummy_capsrc_get()
812 	struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol);  in snd_dummy_capsrc_put()  local
818 	spin_lock_irq(&dummy->mixer_lock);  in snd_dummy_capsrc_put()
819 	change = dummy->capture_source[addr][0] != left &&  in snd_dummy_capsrc_put()
820 	         dummy->capture_source[addr][1] != right;  in snd_dummy_capsrc_put()
821 	dummy->capture_source[addr][0] = left;  in snd_dummy_capsrc_put()
822 	dummy->capture_source[addr][1] = right;  in snd_dummy_capsrc_put()
823 	spin_unlock_irq(&dummy->mixer_lock);  in snd_dummy_capsrc_put()
838 	struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol);  in snd_dummy_iobox_get()  local
840 	value->value.enumerated.item[0] = dummy->iobox;  in snd_dummy_iobox_get()
847 	struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol);  in snd_dummy_iobox_put()  local
853 	changed = value->value.enumerated.item[0] != dummy->iobox;  in snd_dummy_iobox_put()
855 		dummy->iobox = value->value.enumerated.item[0];  in snd_dummy_iobox_put()
857 		if (dummy->iobox) {  in snd_dummy_iobox_put()
858 			dummy->cd_volume_ctl->vd[0].access &=  in snd_dummy_iobox_put()
860 			dummy->cd_switch_ctl->vd[0].access &=  in snd_dummy_iobox_put()
863 			dummy->cd_volume_ctl->vd[0].access |=  in snd_dummy_iobox_put()
865 			dummy->cd_switch_ctl->vd[0].access |=  in snd_dummy_iobox_put()
869 		snd_ctl_notify(dummy->card, SNDRV_CTL_EVENT_MASK_INFO,  in snd_dummy_iobox_put()
870 			       &dummy->cd_volume_ctl->id);  in snd_dummy_iobox_put()
871 		snd_ctl_notify(dummy->card, SNDRV_CTL_EVENT_MASK_INFO,  in snd_dummy_iobox_put()
872 			       &dummy->cd_switch_ctl->id);  in snd_dummy_iobox_put()
898 static int snd_card_dummy_new_mixer(struct snd_dummy *dummy)  in snd_card_dummy_new_mixer()  argument
900 	struct snd_card *card = dummy->card;  in snd_card_dummy_new_mixer()
905 	spin_lock_init(&dummy->mixer_lock);  in snd_card_dummy_new_mixer()
906 	strcpy(card->mixername, "Dummy Mixer");  in snd_card_dummy_new_mixer()
907 	dummy->iobox = 1;  in snd_card_dummy_new_mixer()
910 		kcontrol = snd_ctl_new1(&snd_dummy_controls[idx], dummy);  in snd_card_dummy_new_mixer()
915 			dummy->cd_volume_ctl = kcontrol;  in snd_card_dummy_new_mixer()
917 			dummy->cd_switch_ctl = kcontrol;  in snd_card_dummy_new_mixer()
927 static void print_formats(struct snd_dummy *dummy,  in print_formats()  argument
933 		if (dummy->pcm_hw.formats & (1ULL << i))  in print_formats()
938 static void print_rates(struct snd_dummy *dummy,  in print_rates()  argument
947 	if (dummy->pcm_hw.rates & SNDRV_PCM_RATE_CONTINUOUS)  in print_rates()
949 	if (dummy->pcm_hw.rates & SNDRV_PCM_RATE_KNOT)  in print_rates()
952 		if (dummy->pcm_hw.rates & (1 << i))  in print_rates()
956 #define get_dummy_int_ptr(dummy, ofs) \  argument
957 	(unsigned int *)((char *)&((dummy)->pcm_hw) + (ofs))
958 #define get_dummy_ll_ptr(dummy, ofs) \  argument
959 	(unsigned long long *)((char *)&((dummy)->pcm_hw) + (ofs))
990 	struct snd_dummy *dummy = entry->private_data;  in dummy_proc_read()  local
997 				*get_dummy_int_ptr(dummy, fields[i].offset));  in dummy_proc_read()
1000 				*get_dummy_ll_ptr(dummy, fields[i].offset));  in dummy_proc_read()
1002 			print_formats(dummy, buffer);  in dummy_proc_read()
1004 			print_rates(dummy, buffer);  in dummy_proc_read()
1012 	struct snd_dummy *dummy = entry->private_data;  in dummy_proc_write()  local
1032 			*get_dummy_int_ptr(dummy, fields[i].offset) = val;  in dummy_proc_write()
1034 			*get_dummy_ll_ptr(dummy, fields[i].offset) = val;  in dummy_proc_write()
1056 	struct snd_dummy *dummy;  in snd_dummy_probe()  local
1065 	dummy = card->private_data;  in snd_dummy_probe()
1066 	dummy->card = card;  in snd_dummy_probe()
1070 				"snd-dummy: Using model '%s' for card %i\n",  in snd_dummy_probe()
1072 			m = dummy->model = *mdl;  in snd_dummy_probe()
1081 		err = snd_card_dummy_pcm(dummy, idx, pcm_substreams[dev]);  in snd_dummy_probe()
1086 	dummy->pcm_hw = dummy_pcm_hardware;  in snd_dummy_probe()
1089 			dummy->pcm_hw.formats = m->formats;  in snd_dummy_probe()
1091 			dummy->pcm_hw.buffer_bytes_max = m->buffer_bytes_max;  in snd_dummy_probe()
1093 			dummy->pcm_hw.period_bytes_min = m->period_bytes_min;  in snd_dummy_probe()
1095 			dummy->pcm_hw.period_bytes_max = m->period_bytes_max;  in snd_dummy_probe()
1097 			dummy->pcm_hw.periods_min = m->periods_min;  in snd_dummy_probe()
1099 			dummy->pcm_hw.periods_max = m->periods_max;  in snd_dummy_probe()
1101 			dummy->pcm_hw.rates = m->rates;  in snd_dummy_probe()
1103 			dummy->pcm_hw.rate_min = m->rate_min;  in snd_dummy_probe()
1105 			dummy->pcm_hw.rate_max = m->rate_max;  in snd_dummy_probe()
1107 			dummy->pcm_hw.channels_min = m->channels_min;  in snd_dummy_probe()
1109 			dummy->pcm_hw.channels_max = m->channels_max;  in snd_dummy_probe()
1112 	err = snd_card_dummy_new_mixer(dummy);  in snd_dummy_probe()
1115 	strcpy(card->driver, "Dummy");  in snd_dummy_probe()
1116 	strcpy(card->shortname, "Dummy");  in snd_dummy_probe()
1117 	sprintf(card->longname, "Dummy %i", dev + 1);  in snd_dummy_probe()
1119 	dummy_proc_init(dummy);  in snd_dummy_probe()
1141 	struct snd_dummy *dummy = card->private_data;  in snd_dummy_suspend()  local
1144 	snd_pcm_suspend_all(dummy->pcm);  in snd_dummy_suspend()
1215 		printk(KERN_ERR "Dummy soundcard not found or device busy\n");  in alsa_card_dummy_init()