3  *  Dummy soundcard
26 MODULE_DESCRIPTION("Dummy soundcard (/dev/null)");
28 MODULE_SUPPORTED_DEVICE("{{ALSA,Dummy soundcard}}");
60 MODULE_PARM_DESC(index, "Index value for dummy soundcard.");
62 MODULE_PARM_DESC(id, "ID string for dummy soundcard.");
64 MODULE_PARM_DESC(enable, "Enable this dummy soundcard.");
68 MODULE_PARM_DESC(pcm_devs, "PCM devices # (0-4) for dummy driver.");
70 MODULE_PARM_DESC(pcm_substreams, "PCM substreams # (1-128) for dummy driver.");
72 //MODULE_PARM_DESC(midi_devs, "MIDI devices # (0-2) for dummy driver.");
537 	struct snd_dummy *dummy = snd_pcm_substream_chip(substream);  in dummy_pcm_open()  local
538 	const struct dummy_model *model = dummy->model;  in dummy_pcm_open()
554 	runtime->hw = dummy->pcm_hw;  in dummy_pcm_open()
587  * dummy buffer handling
669 static int snd_card_dummy_pcm(struct snd_dummy *dummy, int device,  in snd_card_dummy_pcm()  argument
676 	err = snd_pcm_new(dummy->card, "Dummy PCM", device,  in snd_card_dummy_pcm()
680 	dummy->pcm = pcm;  in snd_card_dummy_pcm()
687 	pcm->private_data = dummy;  in snd_card_dummy_pcm()
689 	strcpy(pcm->name, "Dummy PCM");  in snd_card_dummy_pcm()
725 	struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol);  in snd_dummy_volume_get()  local
728 	spin_lock_irq(&dummy->mixer_lock);  in snd_dummy_volume_get()
729 	ucontrol->value.integer.value[0] = dummy->mixer_volume[addr][0];  in snd_dummy_volume_get()
730 	ucontrol->value.integer.value[1] = dummy->mixer_volume[addr][1];  in snd_dummy_volume_get()
731 	spin_unlock_irq(&dummy->mixer_lock);  in snd_dummy_volume_get()
738 	struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol);  in snd_dummy_volume_put()  local
752 	spin_lock_irq(&dummy->mixer_lock);  in snd_dummy_volume_put()
753 	change = dummy->mixer_volume[addr][0] != left ||  in snd_dummy_volume_put()
754 	         dummy->mixer_volume[addr][1] != right;  in snd_dummy_volume_put()
755 	dummy->mixer_volume[addr][0] = left;  in snd_dummy_volume_put()
756 	dummy->mixer_volume[addr][1] = right;  in snd_dummy_volume_put()
757 	spin_unlock_irq(&dummy->mixer_lock);  in snd_dummy_volume_put()
774 	struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol);  in snd_dummy_capsrc_get()  local
777 	spin_lock_irq(&dummy->mixer_lock);  in snd_dummy_capsrc_get()
778 	ucontrol->value.integer.value[0] = dummy->capture_source[addr][0];  in snd_dummy_capsrc_get()
779 	ucontrol->value.integer.value[1] = dummy->capture_source[addr][1];  in snd_dummy_capsrc_get()
780 	spin_unlock_irq(&dummy->mixer_lock);  in snd_dummy_capsrc_get()
786 	struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol);  in snd_dummy_capsrc_put()  local
792 	spin_lock_irq(&dummy->mixer_lock);  in snd_dummy_capsrc_put()
793 	change = dummy->capture_source[addr][0] != left &&  in snd_dummy_capsrc_put()
794 	         dummy->capture_source[addr][1] != right;  in snd_dummy_capsrc_put()
795 	dummy->capture_source[addr][0] = left;  in snd_dummy_capsrc_put()
796 	dummy->capture_source[addr][1] = right;  in snd_dummy_capsrc_put()
797 	spin_unlock_irq(&dummy->mixer_lock);  in snd_dummy_capsrc_put()
812 	struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol);  in snd_dummy_iobox_get()  local
814 	value->value.enumerated.item[0] = dummy->iobox;  in snd_dummy_iobox_get()
821 	struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol);  in snd_dummy_iobox_put()  local
827 	changed = value->value.enumerated.item[0] != dummy->iobox;  in snd_dummy_iobox_put()
829 		dummy->iobox = value->value.enumerated.item[0];  in snd_dummy_iobox_put()
831 		if (dummy->iobox) {  in snd_dummy_iobox_put()
832 			dummy->cd_volume_ctl->vd[0].access &=  in snd_dummy_iobox_put()
834 			dummy->cd_switch_ctl->vd[0].access &=  in snd_dummy_iobox_put()
837 			dummy->cd_volume_ctl->vd[0].access |=  in snd_dummy_iobox_put()
839 			dummy->cd_switch_ctl->vd[0].access |=  in snd_dummy_iobox_put()
843 		snd_ctl_notify(dummy->card, SNDRV_CTL_EVENT_MASK_INFO,  in snd_dummy_iobox_put()
844 			       &dummy->cd_volume_ctl->id);  in snd_dummy_iobox_put()
845 		snd_ctl_notify(dummy->card, SNDRV_CTL_EVENT_MASK_INFO,  in snd_dummy_iobox_put()
846 			       &dummy->cd_switch_ctl->id);  in snd_dummy_iobox_put()
872 static int snd_card_dummy_new_mixer(struct snd_dummy *dummy)  in snd_card_dummy_new_mixer()  argument
874 	struct snd_card *card = dummy->card;  in snd_card_dummy_new_mixer()
879 	spin_lock_init(&dummy->mixer_lock);  in snd_card_dummy_new_mixer()
880 	strcpy(card->mixername, "Dummy Mixer");  in snd_card_dummy_new_mixer()
881 	dummy->iobox = 1;  in snd_card_dummy_new_mixer()
884 		kcontrol = snd_ctl_new1(&snd_dummy_controls[idx], dummy);  in snd_card_dummy_new_mixer()
889 			dummy->cd_volume_ctl = kcontrol;  in snd_card_dummy_new_mixer()
891 			dummy->cd_switch_ctl = kcontrol;  in snd_card_dummy_new_mixer()
901 static void print_formats(struct snd_dummy *dummy,  in print_formats()  argument
907 		if (dummy->pcm_hw.formats & pcm_format_to_bits(i))  in print_formats()
912 static void print_rates(struct snd_dummy *dummy,  in print_rates()  argument
921 	if (dummy->pcm_hw.rates & SNDRV_PCM_RATE_CONTINUOUS)  in print_rates()
923 	if (dummy->pcm_hw.rates & SNDRV_PCM_RATE_KNOT)  in print_rates()
926 		if (dummy->pcm_hw.rates & (1 << i))  in print_rates()
930 #define get_dummy_int_ptr(dummy, ofs) \  argument
931 	(unsigned int *)((char *)&((dummy)->pcm_hw) + (ofs))
932 #define get_dummy_ll_ptr(dummy, ofs) \  argument
933 	(unsigned long long *)((char *)&((dummy)->pcm_hw) + (ofs))
964 	struct snd_dummy *dummy = entry->private_data;  in dummy_proc_read()  local
971 				*get_dummy_int_ptr(dummy, fields[i].offset));  in dummy_proc_read()
974 				*get_dummy_ll_ptr(dummy, fields[i].offset));  in dummy_proc_read()
976 			print_formats(dummy, buffer);  in dummy_proc_read()
978 			print_rates(dummy, buffer);  in dummy_proc_read()
986 	struct snd_dummy *dummy = entry->private_data;  in dummy_proc_write()  local
1006 			*get_dummy_int_ptr(dummy, fields[i].offset) = val;  in dummy_proc_write()
1008 			*get_dummy_ll_ptr(dummy, fields[i].offset) = val;  in dummy_proc_write()
1024 	struct snd_dummy *dummy;  in snd_dummy_probe()  local
1033 	dummy = card->private_data;  in snd_dummy_probe()
1034 	dummy->card = card;  in snd_dummy_probe()
1038 				"snd-dummy: Using model '%s' for card %i\n",  in snd_dummy_probe()
1040 			m = dummy->model = *mdl;  in snd_dummy_probe()
1049 		err = snd_card_dummy_pcm(dummy, idx, pcm_substreams[dev]);  in snd_dummy_probe()
1054 	dummy->pcm_hw = dummy_pcm_hardware;  in snd_dummy_probe()
1057 			dummy->pcm_hw.formats = m->formats;  in snd_dummy_probe()
1059 			dummy->pcm_hw.buffer_bytes_max = m->buffer_bytes_max;  in snd_dummy_probe()
1061 			dummy->pcm_hw.period_bytes_min = m->period_bytes_min;  in snd_dummy_probe()
1063 			dummy->pcm_hw.period_bytes_max = m->period_bytes_max;  in snd_dummy_probe()
1065 			dummy->pcm_hw.periods_min = m->periods_min;  in snd_dummy_probe()
1067 			dummy->pcm_hw.periods_max = m->periods_max;  in snd_dummy_probe()
1069 			dummy->pcm_hw.rates = m->rates;  in snd_dummy_probe()
1071 			dummy->pcm_hw.rate_min = m->rate_min;  in snd_dummy_probe()
1073 			dummy->pcm_hw.rate_max = m->rate_max;  in snd_dummy_probe()
1075 			dummy->pcm_hw.channels_min = m->channels_min;  in snd_dummy_probe()
1077 			dummy->pcm_hw.channels_max = m->channels_max;  in snd_dummy_probe()
1080 	err = snd_card_dummy_new_mixer(dummy);  in snd_dummy_probe()
1083 	strcpy(card->driver, "Dummy");  in snd_dummy_probe()
1084 	strcpy(card->shortname, "Dummy");  in snd_dummy_probe()
1085 	sprintf(card->longname, "Dummy %i", dev + 1);  in snd_dummy_probe()
1087 	dummy_proc_init(dummy);  in snd_dummy_probe()
1181 		printk(KERN_ERR "Dummy soundcard not found or device busy\n");  in alsa_card_dummy_init()