22 /* Mixer Interface for the Focusrite Scarlett 6i6/18i8/18i20 Gen 2 audio
35  * This ALSA mixer gives access to:
36  *  - input, output, mixer-matrix muxes
37  *  - 18x10 mixer-matrix gain stages
58  *                      |     | Mixer      |   |  |
103 #include "mixer.h"
114 /* mixer range from -80dB to +6dB in 0.5dB steps */
121 /* map from (dB + 80) * 2 to mixer value
148 /* Maximum number of inputs to the mixer */
151 /* Maximum number of outputs from the mixer */
169  * - Mixer I/O
204  * - dst_descr: printf format string for mixer controls
224 	struct usb_mixer_interface *mixer;  member
289 			.dst_descr = "Mixer Input %02d Capture"
355 			.dst_descr = "Mixer Input %02d Capture"
426 			.dst_descr = "Mixer Input %02d Capture"
587 	struct usb_mixer_interface *mixer, u32 cmd,  in scarlett2_usb()  argument
590 	struct scarlett2_mixer_data *private = mixer->private_data;  in scarlett2_usb()
617 	err = snd_usb_ctl_msg(mixer->chip->dev,  in scarlett2_usb()
618 			usb_sndctrlpipe(mixer->chip->dev, 0),  in scarlett2_usb()
628 			mixer->chip,  in scarlett2_usb()
637 	err = snd_usb_ctl_msg(mixer->chip->dev,  in scarlett2_usb()
638 			usb_sndctrlpipe(mixer->chip->dev, 0),  in scarlett2_usb()
650 			mixer->chip,  in scarlett2_usb()
663 			mixer->chip,  in scarlett2_usb()
688 static void scarlett2_config_save(struct usb_mixer_interface *mixer)  in scarlett2_config_save()  argument
692 	scarlett2_usb(mixer, SCARLETT2_USB_DATA_CMD,  in scarlett2_config_save()
703 	scarlett2_config_save(private->mixer);  in scarlett2_config_save_work()
710 	struct usb_mixer_interface *mixer,  in scarlett2_usb_set_config()  argument
722 	struct scarlett2_mixer_data *private = mixer->private_data;  in scarlett2_usb_set_config()
731 	err = scarlett2_usb(mixer, SCARLETT2_USB_SET_DATA,  in scarlett2_usb_set_config()
739 	err = scarlett2_usb(mixer, SCARLETT2_USB_DATA_CMD,  in scarlett2_usb_set_config()
752 	struct usb_mixer_interface *mixer,  in scarlett2_usb_get()  argument
762 	return scarlett2_usb(mixer, SCARLETT2_USB_GET_DATA,  in scarlett2_usb_get()
768 	struct usb_mixer_interface *mixer,  in scarlett2_usb_get_config()  argument
775 	return scarlett2_usb_get(mixer, config_item.offset, buf, size);  in scarlett2_usb_get_config()
780 	struct usb_mixer_interface *mixer,  in scarlett2_usb_get_volume_status()  argument
783 	return scarlett2_usb_get(mixer, SCARLETT2_USB_VOLUME_STATUS_OFFSET,  in scarlett2_usb_get_volume_status()
790 static int scarlett2_usb_set_mix(struct usb_mixer_interface *mixer,  in scarlett2_usb_set_mix()  argument
793 	struct scarlett2_mixer_data *private = mixer->private_data;  in scarlett2_usb_set_mix()
812 	return scarlett2_usb(mixer, SCARLETT2_USB_SET_MIX,  in scarlett2_usb_set_mix()
836 static int scarlett2_usb_set_mux(struct usb_mixer_interface *mixer)  in scarlett2_usb_set_mux()  argument
838 	struct scarlett2_mixer_data *private = mixer->private_data;  in scarlett2_usb_set_mux()
899 		err = scarlett2_usb(mixer, SCARLETT2_USB_SET_MUX,  in scarlett2_usb_set_mux()
910 static int scarlett2_usb_get_meter_levels(struct usb_mixer_interface *mixer,  in scarlett2_usb_get_meter_levels()  argument
924 	err = scarlett2_usb(mixer, SCARLETT2_USB_GET_METER_LEVELS,  in scarlett2_usb_get_meter_levels()
939 static int scarlett2_add_new_ctl(struct usb_mixer_interface *mixer,  in scarlett2_add_new_ctl()  argument
952 	elem->head.mixer = mixer;  in scarlett2_add_new_ctl()
981 static int scarlett2_update_volumes(struct usb_mixer_interface *mixer)  in scarlett2_update_volumes()  argument
983 	struct scarlett2_mixer_data *private = mixer->private_data;  in scarlett2_update_volumes()
992 	err = scarlett2_usb_get_volume_status(mixer, &volume_status);  in scarlett2_update_volumes()
1028 	struct usb_mixer_interface *mixer = elem->head.mixer;  in scarlett2_master_volume_ctl_get()  local
1029 	struct scarlett2_mixer_data *private = mixer->private_data;  in scarlett2_master_volume_ctl_get()
1033 		scarlett2_update_volumes(mixer);  in scarlett2_master_volume_ctl_get()
1045 	struct usb_mixer_interface *mixer = elem->head.mixer;  in scarlett2_volume_ctl_get()  local
1046 	struct scarlett2_mixer_data *private = mixer->private_data;  in scarlett2_volume_ctl_get()
1051 		scarlett2_update_volumes(mixer);  in scarlett2_volume_ctl_get()
1063 	struct usb_mixer_interface *mixer = elem->head.mixer;  in scarlett2_volume_ctl_put()  local
1064 	struct scarlett2_mixer_data *private = mixer->private_data;  in scarlett2_volume_ctl_put()
1077 	err = scarlett2_usb_set_config(mixer, SCARLETT2_CONFIG_LINE_OUT_VOLUME,  in scarlett2_volume_ctl_put()
1130 	struct scarlett2_mixer_data *private = elem->head.mixer->private_data;  in scarlett2_sw_hw_enum_ctl_get()
1141 	struct usb_mixer_interface *mixer = elem->head.mixer;  in scarlett2_sw_hw_enum_ctl_put()  local
1142 	struct scarlett2_mixer_data *private = mixer->private_data;  in scarlett2_sw_hw_enum_ctl_put()
1172 		mixer, SCARLETT2_CONFIG_LINE_OUT_VOLUME,  in scarlett2_sw_hw_enum_ctl_put()
1178 	snd_ctl_notify(mixer->chip->card, SNDRV_CTL_EVENT_MASK_INFO,  in scarlett2_sw_hw_enum_ctl_put()
1182 	err = scarlett2_usb_set_config(mixer, SCARLETT2_CONFIG_SW_HW_SWITCH,  in scarlett2_sw_hw_enum_ctl_put()
1214 	struct scarlett2_mixer_data *private = elem->head.mixer->private_data;  in scarlett2_level_enum_ctl_get()
1225 	struct usb_mixer_interface *mixer = elem->head.mixer;  in scarlett2_level_enum_ctl_put()  local
1226 	struct scarlett2_mixer_data *private = mixer->private_data;  in scarlett2_level_enum_ctl_put()
1242 	err = scarlett2_usb_set_config(mixer, SCARLETT2_CONFIG_LEVEL_SWITCH,  in scarlett2_level_enum_ctl_put()
1264 	struct scarlett2_mixer_data *private = elem->head.mixer->private_data;  in scarlett2_pad_ctl_get()
1275 	struct usb_mixer_interface *mixer = elem->head.mixer;  in scarlett2_pad_ctl_put()  local
1276 	struct scarlett2_mixer_data *private = mixer->private_data;  in scarlett2_pad_ctl_put()
1292 	err = scarlett2_usb_set_config(mixer, SCARLETT2_CONFIG_PAD_SWITCH,  in scarlett2_pad_ctl_put()
1314 	struct usb_mixer_interface *mixer = elem->head.mixer;  in scarlett2_button_ctl_get()  local
1315 	struct scarlett2_mixer_data *private = mixer->private_data;  in scarlett2_button_ctl_get()
1319 		scarlett2_update_volumes(mixer);  in scarlett2_button_ctl_get()
1331 	struct usb_mixer_interface *mixer = elem->head.mixer;  in scarlett2_button_ctl_put()  local
1332 	struct scarlett2_mixer_data *private = mixer->private_data;  in scarlett2_button_ctl_put()
1348 	err = scarlett2_usb_set_config(mixer, SCARLETT2_CONFIG_BUTTONS,  in scarlett2_button_ctl_put()
1366 static int scarlett2_add_line_out_ctls(struct usb_mixer_interface *mixer)  in scarlett2_add_line_out_ctls()  argument
1368 	struct scarlett2_mixer_data *private = mixer->private_data;  in scarlett2_add_line_out_ctls()
1379 		err = scarlett2_add_new_ctl(mixer,  in scarlett2_add_line_out_ctls()
1398 		err = scarlett2_add_new_ctl(mixer,  in scarlett2_add_line_out_ctls()
1414 			err = scarlett2_add_new_ctl(mixer,  in scarlett2_add_line_out_ctls()
1424 		err = scarlett2_add_new_ctl(mixer, &scarlett2_button_ctl,  in scarlett2_add_line_out_ctls()
1436 static int scarlett2_add_line_in_ctls(struct usb_mixer_interface *mixer)  in scarlett2_add_line_in_ctls()  argument
1438 	struct scarlett2_mixer_data *private = mixer->private_data;  in scarlett2_add_line_in_ctls()
1446 		err = scarlett2_add_new_ctl(mixer, &scarlett2_level_enum_ctl,  in scarlett2_add_line_in_ctls()
1455 		err = scarlett2_add_new_ctl(mixer, &scarlett2_pad_ctl,  in scarlett2_add_line_in_ctls()
1464 /*** Mixer Volume Controls ***/
1483 	struct scarlett2_mixer_data *private = elem->head.mixer->private_data;  in scarlett2_mixer_ctl_get()
1493 	struct usb_mixer_interface *mixer = elem->head.mixer;  in scarlett2_mixer_ctl_put()  local
1494 	struct scarlett2_mixer_data *private = mixer->private_data;  in scarlett2_mixer_ctl_put()
1510 	err = scarlett2_usb_set_mix(mixer, mix_num);  in scarlett2_mixer_ctl_put()
1537 static int scarlett2_add_mixer_ctls(struct usb_mixer_interface *mixer)  in scarlett2_add_mixer_ctls()  argument
1539 	struct scarlett2_mixer_data *private = mixer->private_data;  in scarlett2_add_mixer_ctls()
1553 			err = scarlett2_add_new_ctl(mixer, &scarlett2_mixer_ctl,  in scarlett2_add_mixer_ctls()
1569 	struct scarlett2_mixer_data *private = elem->head.mixer->private_data;  in scarlett2_mux_src_enum_ctl_info()
1601 	struct scarlett2_mixer_data *private = elem->head.mixer->private_data;  in scarlett2_mux_src_enum_ctl_get()
1611 	struct usb_mixer_interface *mixer = elem->head.mixer;  in scarlett2_mux_src_enum_ctl_put()  local
1612 	struct scarlett2_mixer_data *private = mixer->private_data;  in scarlett2_mux_src_enum_ctl_put()
1626 	err = scarlett2_usb_set_mux(mixer);  in scarlett2_mux_src_enum_ctl_put()
1643 static int scarlett2_add_mux_enums(struct usb_mixer_interface *mixer)  in scarlett2_add_mux_enums()  argument
1645 	struct scarlett2_mixer_data *private = mixer->private_data;  in scarlett2_add_mux_enums()
1662 			err = scarlett2_add_new_ctl(mixer,  in scarlett2_add_mux_enums()
1695 	err = scarlett2_usb_get_meter_levels(elem->head.mixer, meter_levels);  in scarlett2_meter_ctl_get()
1713 static int scarlett2_add_meter_ctl(struct usb_mixer_interface *mixer)  in scarlett2_add_meter_ctl()  argument
1715 	return scarlett2_add_new_ctl(mixer, &scarlett2_meter_ctl,  in scarlett2_add_meter_ctl()
1722 static void scarlett2_private_free(struct usb_mixer_interface *mixer)  in scarlett2_private_free()  argument
1724 	struct scarlett2_mixer_data *private = mixer->private_data;  in scarlett2_private_free()
1728 	mixer->private_data = NULL;  in scarlett2_private_free()
1731 static void scarlett2_private_suspend(struct usb_mixer_interface *mixer)  in scarlett2_private_suspend()  argument
1733 	struct scarlett2_mixer_data *private = mixer->private_data;  in scarlett2_private_suspend()
1736 		scarlett2_config_save(private->mixer);  in scarlett2_private_suspend()
1807 static int scarlett2_init_private(struct usb_mixer_interface *mixer,  in scarlett2_init_private()  argument
1822 	private->mixer = mixer;  in scarlett2_init_private()
1823 	mixer->private_data = private;  in scarlett2_init_private()
1824 	mixer->private_free = scarlett2_private_free;  in scarlett2_init_private()
1825 	mixer->private_suspend = scarlett2_private_suspend;  in scarlett2_init_private()
1831 	return scarlett2_usb(mixer, SCARLETT2_USB_INIT_SEQ, NULL, 0, NULL, 0);  in scarlett2_init_private()
1835 static int scarlett2_read_configs(struct usb_mixer_interface *mixer)  in scarlett2_read_configs()  argument
1837 	struct scarlett2_mixer_data *private = mixer->private_data;  in scarlett2_read_configs()
1849 			mixer,  in scarlett2_read_configs()
1861 			mixer,  in scarlett2_read_configs()
1871 	err = scarlett2_usb_get_volume_status(mixer, &volume_status);  in scarlett2_read_configs()
1902 	struct usb_mixer_interface *mixer)  in scarlett2_mixer_interrupt_vol_change()  argument
1904 	struct scarlett2_mixer_data *private = mixer->private_data;  in scarlett2_mixer_interrupt_vol_change()
1912 	snd_ctl_notify(mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE,  in scarlett2_mixer_interrupt_vol_change()
1918 		snd_ctl_notify(mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE,  in scarlett2_mixer_interrupt_vol_change()
1925 	struct usb_mixer_interface *mixer)  in scarlett2_mixer_interrupt_button_change()  argument
1927 	struct scarlett2_mixer_data *private = mixer->private_data;  in scarlett2_mixer_interrupt_button_change()
1933 		snd_ctl_notify(mixer->chip->card, SNDRV_CTL_EVENT_MASK_VALUE,  in scarlett2_mixer_interrupt_button_change()
1940 	struct usb_mixer_interface *mixer = urb->context;  in scarlett2_mixer_interrupt()  local
1951 			scarlett2_mixer_interrupt_vol_change(mixer);  in scarlett2_mixer_interrupt()
1953 			scarlett2_mixer_interrupt_button_change(mixer);  in scarlett2_mixer_interrupt()
1955 		usb_audio_err(mixer->chip,  in scarlett2_mixer_interrupt()
1956 			      "scarlett mixer interrupt length %d\n", len);  in scarlett2_mixer_interrupt()
1963 		urb->dev = mixer->chip->dev;  in scarlett2_mixer_interrupt()
1968 static int scarlett2_mixer_status_create(struct usb_mixer_interface *mixer)  in scarlett2_mixer_status_create()  argument
1970 	struct usb_device *dev = mixer->chip->dev;  in scarlett2_mixer_status_create()
1975 	if (mixer->urb) {  in scarlett2_mixer_status_create()
1976 		usb_audio_err(mixer->chip,  in scarlett2_mixer_status_create()
1977 			      "%s: mixer urb already in use!\n", __func__);  in scarlett2_mixer_status_create()
1984 	mixer->urb = usb_alloc_urb(0, GFP_KERNEL);  in scarlett2_mixer_status_create()
1985 	if (!mixer->urb)  in scarlett2_mixer_status_create()
1992 	usb_fill_int_urb(mixer->urb, dev, pipe,  in scarlett2_mixer_status_create()
1994 			 scarlett2_mixer_interrupt, mixer,  in scarlett2_mixer_status_create()
1997 	return usb_submit_urb(mixer->urb, GFP_KERNEL);  in scarlett2_mixer_status_create()
2001 int snd_scarlett_gen2_controls_create(struct usb_mixer_interface *mixer)  in snd_scarlett_gen2_controls_create()  argument
2007 	if (!mixer->protocol)  in snd_scarlett_gen2_controls_create()
2010 	switch (mixer->chip->usb_id) {  in snd_scarlett_gen2_controls_create()
2024 	if (!(mixer->chip->setup & SCARLETT2_ENABLE)) {  in snd_scarlett_gen2_controls_create()
2025 		usb_audio_err(mixer->chip,  in snd_scarlett_gen2_controls_create()
2026 			"Focusrite Scarlett Gen 2 Mixer Driver disabled; "  in snd_scarlett_gen2_controls_create()
2033 	err = scarlett2_init_private(mixer, info);  in snd_scarlett_gen2_controls_create()
2038 	err = scarlett2_read_configs(mixer);  in snd_scarlett_gen2_controls_create()
2043 	err = scarlett2_add_line_out_ctls(mixer);  in snd_scarlett_gen2_controls_create()
2048 	err = scarlett2_add_line_in_ctls(mixer);  in snd_scarlett_gen2_controls_create()
2052 	/* Create the input, output, and mixer mux input selections */  in snd_scarlett_gen2_controls_create()
2053 	err = scarlett2_add_mux_enums(mixer);  in snd_scarlett_gen2_controls_create()
2057 	/* Create the matrix mixer controls */  in snd_scarlett_gen2_controls_create()
2058 	err = scarlett2_add_mixer_ctls(mixer);  in snd_scarlett_gen2_controls_create()
2063 	err = scarlett2_add_meter_ctl(mixer);  in snd_scarlett_gen2_controls_create()
2069 		err = scarlett2_mixer_status_create(mixer);  in snd_scarlett_gen2_controls_create()