3  *  Dummy soundcard
26 MODULE_DESCRIPTION("Dummy soundcard (/dev/null)");
63 MODULE_PARM_DESC(index, "Index value for dummy soundcard.");
65 MODULE_PARM_DESC(id, "ID string for dummy soundcard.");
67 MODULE_PARM_DESC(enable, "Enable this dummy soundcard.");
71 MODULE_PARM_DESC(pcm_devs, "PCM devices # (0-4) for dummy driver.");
73 MODULE_PARM_DESC(pcm_substreams, "PCM substreams # (1-128) for dummy driver.");
75 //MODULE_PARM_DESC(midi_devs, "MIDI devices # (0-2) for dummy driver.");
77 MODULE_PARM_DESC(mixer_volume_level_min, "Minimum mixer volume level for dummy driver. Default: -50…
79 MODULE_PARM_DESC(mixer_volume_level_max, "Maximum mixer volume level for dummy driver. Default: 100…
543 	struct snd_dummy *dummy = snd_pcm_substream_chip(substream);  in dummy_pcm_open()  local
544 	const struct dummy_model *model = dummy->model;  in dummy_pcm_open()
560 	runtime->hw = dummy->pcm_hw;  in dummy_pcm_open()
593  * dummy buffer handling
667 static int snd_card_dummy_pcm(struct snd_dummy *dummy, int device,  in snd_card_dummy_pcm()  argument
674 	err = snd_pcm_new(dummy->card, "Dummy PCM", device,  in snd_card_dummy_pcm()
678 	dummy->pcm = pcm;  in snd_card_dummy_pcm()
685 	pcm->private_data = dummy;  in snd_card_dummy_pcm()
687 	strcpy(pcm->name, "Dummy PCM");  in snd_card_dummy_pcm()
723 	struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol);  in snd_dummy_volume_get()  local
726 	spin_lock_irq(&dummy->mixer_lock);  in snd_dummy_volume_get()
727 	ucontrol->value.integer.value[0] = dummy->mixer_volume[addr][0];  in snd_dummy_volume_get()
728 	ucontrol->value.integer.value[1] = dummy->mixer_volume[addr][1];  in snd_dummy_volume_get()
729 	spin_unlock_irq(&dummy->mixer_lock);  in snd_dummy_volume_get()
736 	struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol);  in snd_dummy_volume_put()  local
750 	spin_lock_irq(&dummy->mixer_lock);  in snd_dummy_volume_put()
751 	change = dummy->mixer_volume[addr][0] != left ||  in snd_dummy_volume_put()
752 	         dummy->mixer_volume[addr][1] != right;  in snd_dummy_volume_put()
753 	dummy->mixer_volume[addr][0] = left;  in snd_dummy_volume_put()
754 	dummy->mixer_volume[addr][1] = right;  in snd_dummy_volume_put()
755 	spin_unlock_irq(&dummy->mixer_lock);  in snd_dummy_volume_put()
772 	struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol);  in snd_dummy_capsrc_get()  local
775 	spin_lock_irq(&dummy->mixer_lock);  in snd_dummy_capsrc_get()
776 	ucontrol->value.integer.value[0] = dummy->capture_source[addr][0];  in snd_dummy_capsrc_get()
777 	ucontrol->value.integer.value[1] = dummy->capture_source[addr][1];  in snd_dummy_capsrc_get()
778 	spin_unlock_irq(&dummy->mixer_lock);  in snd_dummy_capsrc_get()
784 	struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol);  in snd_dummy_capsrc_put()  local
790 	spin_lock_irq(&dummy->mixer_lock);  in snd_dummy_capsrc_put()
791 	change = dummy->capture_source[addr][0] != left &&  in snd_dummy_capsrc_put()
792 	         dummy->capture_source[addr][1] != right;  in snd_dummy_capsrc_put()
793 	dummy->capture_source[addr][0] = left;  in snd_dummy_capsrc_put()
794 	dummy->capture_source[addr][1] = right;  in snd_dummy_capsrc_put()
795 	spin_unlock_irq(&dummy->mixer_lock);  in snd_dummy_capsrc_put()
810 	struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol);  in snd_dummy_iobox_get()  local
812 	value->value.enumerated.item[0] = dummy->iobox;  in snd_dummy_iobox_get()
819 	struct snd_dummy *dummy = snd_kcontrol_chip(kcontrol);  in snd_dummy_iobox_put()  local
825 	changed = value->value.enumerated.item[0] != dummy->iobox;  in snd_dummy_iobox_put()
827 		dummy->iobox = value->value.enumerated.item[0];  in snd_dummy_iobox_put()
829 		if (dummy->iobox) {  in snd_dummy_iobox_put()
830 			dummy->cd_volume_ctl->vd[0].access &=  in snd_dummy_iobox_put()
832 			dummy->cd_switch_ctl->vd[0].access &=  in snd_dummy_iobox_put()
835 			dummy->cd_volume_ctl->vd[0].access |=  in snd_dummy_iobox_put()
837 			dummy->cd_switch_ctl->vd[0].access |=  in snd_dummy_iobox_put()
841 		snd_ctl_notify(dummy->card, SNDRV_CTL_EVENT_MASK_INFO,  in snd_dummy_iobox_put()
842 			       &dummy->cd_volume_ctl->id);  in snd_dummy_iobox_put()
843 		snd_ctl_notify(dummy->card, SNDRV_CTL_EVENT_MASK_INFO,  in snd_dummy_iobox_put()
844 			       &dummy->cd_switch_ctl->id);  in snd_dummy_iobox_put()
870 static int snd_card_dummy_new_mixer(struct snd_dummy *dummy)  in snd_card_dummy_new_mixer()  argument
872 	struct snd_card *card = dummy->card;  in snd_card_dummy_new_mixer()
877 	spin_lock_init(&dummy->mixer_lock);  in snd_card_dummy_new_mixer()
878 	strcpy(card->mixername, "Dummy Mixer");  in snd_card_dummy_new_mixer()
879 	dummy->iobox = 1;  in snd_card_dummy_new_mixer()
882 		kcontrol = snd_ctl_new1(&snd_dummy_controls[idx], dummy);  in snd_card_dummy_new_mixer()
887 			dummy->cd_volume_ctl = kcontrol;  in snd_card_dummy_new_mixer()
889 			dummy->cd_switch_ctl = kcontrol;  in snd_card_dummy_new_mixer()
899 static void print_formats(struct snd_dummy *dummy,  in print_formats()  argument
905 		if (dummy->pcm_hw.formats & pcm_format_to_bits(i))  in print_formats()
910 static void print_rates(struct snd_dummy *dummy,  in print_rates()  argument
919 	if (dummy->pcm_hw.rates & SNDRV_PCM_RATE_CONTINUOUS)  in print_rates()
921 	if (dummy->pcm_hw.rates & SNDRV_PCM_RATE_KNOT)  in print_rates()
924 		if (dummy->pcm_hw.rates & (1 << i))  in print_rates()
928 #define get_dummy_int_ptr(dummy, ofs) \  argument
929 	(unsigned int *)((char *)&((dummy)->pcm_hw) + (ofs))
930 #define get_dummy_ll_ptr(dummy, ofs) \  argument
931 	(unsigned long long *)((char *)&((dummy)->pcm_hw) + (ofs))
962 	struct snd_dummy *dummy = entry->private_data;  in dummy_proc_read()  local
969 				*get_dummy_int_ptr(dummy, fields[i].offset));  in dummy_proc_read()
972 				*get_dummy_ll_ptr(dummy, fields[i].offset));  in dummy_proc_read()
974 			print_formats(dummy, buffer);  in dummy_proc_read()
976 			print_rates(dummy, buffer);  in dummy_proc_read()
984 	struct snd_dummy *dummy = entry->private_data;  in dummy_proc_write()  local
1004 			*get_dummy_int_ptr(dummy, fields[i].offset) = val;  in dummy_proc_write()
1006 			*get_dummy_ll_ptr(dummy, fields[i].offset) = val;  in dummy_proc_write()
1022 	struct snd_dummy *dummy;  in snd_dummy_probe()  local
1031 	dummy = card->private_data;  in snd_dummy_probe()
1032 	dummy->card = card;  in snd_dummy_probe()
1035 			pr_info("snd-dummy: Using model '%s' for card %i\n",  in snd_dummy_probe()
1037 			m = dummy->model = *mdl;  in snd_dummy_probe()
1046 		err = snd_card_dummy_pcm(dummy, idx, pcm_substreams[dev]);  in snd_dummy_probe()
1051 	dummy->pcm_hw = dummy_pcm_hardware;  in snd_dummy_probe()
1054 			dummy->pcm_hw.formats = m->formats;  in snd_dummy_probe()
1056 			dummy->pcm_hw.buffer_bytes_max = m->buffer_bytes_max;  in snd_dummy_probe()
1058 			dummy->pcm_hw.period_bytes_min = m->period_bytes_min;  in snd_dummy_probe()
1060 			dummy->pcm_hw.period_bytes_max = m->period_bytes_max;  in snd_dummy_probe()
1062 			dummy->pcm_hw.periods_min = m->periods_min;  in snd_dummy_probe()
1064 			dummy->pcm_hw.periods_max = m->periods_max;  in snd_dummy_probe()
1066 			dummy->pcm_hw.rates = m->rates;  in snd_dummy_probe()
1068 			dummy->pcm_hw.rate_min = m->rate_min;  in snd_dummy_probe()
1070 			dummy->pcm_hw.rate_max = m->rate_max;  in snd_dummy_probe()
1072 			dummy->pcm_hw.channels_min = m->channels_min;  in snd_dummy_probe()
1074 			dummy->pcm_hw.channels_max = m->channels_max;  in snd_dummy_probe()
1078 		pr_warn("snd-dummy: Invalid mixer volume level: min=%d, max=%d. Fall back to default value.\n",  in snd_dummy_probe()
1083 	err = snd_card_dummy_new_mixer(dummy);  in snd_dummy_probe()
1086 	strcpy(card->driver, "Dummy");  in snd_dummy_probe()
1087 	strcpy(card->shortname, "Dummy");  in snd_dummy_probe()
1088 	sprintf(card->longname, "Dummy %i", dev + 1);  in snd_dummy_probe()
1090 	dummy_proc_init(dummy);  in snd_dummy_probe()
1169 		pr_err("Dummy soundcard not found or device busy\n");  in alsa_card_dummy_init()