sound: usb: Add support for parsing AudioControl intf for BADD devices
BADD 3.0 devices support three types of topologies;
Basic I/P, Basic O/P, and BASIC I/P. Accordingly, various
units and terminals have to be parsed which are not
exposed by the device and host must be able to figure
out various class-specific descriptors based on the
profile ID of the device. This patch adds this logic
to build various units and terminals of the AudioControl
interface of a BADD device.
Change-Id: Ib52f884133cdf6e0ec95f49095c14f7d005a5356
Signed-off-by: Ajay Agarwal <ajaya@codeaurora.org>
Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>
diff --git a/sound/usb/badd.c b/sound/usb/badd.c
new file mode 100644
index 0000000..cc6c26c
--- /dev/null
+++ b/sound/usb/badd.c
@@ -0,0 +1,137 @@
+/*
+ * Copyright (c) 2017, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/usb.h>
+#include <linux/usb/audio.h>
+#include <linux/usb/audio-v2.h>
+#include <linux/usb/audio-v3.h>
+
+struct uac3_input_terminal_descriptor badd_baif_in_term_desc = {
+ .bLength = UAC3_DT_INPUT_TERMINAL_SIZE,
+ .bDescriptorType = USB_DT_CS_INTERFACE,
+ .bDescriptorSubtype = UAC_INPUT_TERMINAL,
+ .bTerminalID = BADD_IN_TERM_ID_BAIF,
+ .bCSourceID = BADD_CLOCK_SOURCE,
+ .wExTerminalDescrID = 0x0000,
+ .wTerminalDescrStr = 0x0000
+};
+
+struct uac3_input_terminal_descriptor badd_baof_in_term_desc = {
+ .bLength = UAC3_DT_INPUT_TERMINAL_SIZE,
+ .bDescriptorType = USB_DT_CS_INTERFACE,
+ .bDescriptorSubtype = UAC_INPUT_TERMINAL,
+ .bTerminalID = BADD_IN_TERM_ID_BAOF,
+ .wTerminalType = UAC_TERMINAL_STREAMING,
+ .bAssocTerminal = 0x00,
+ .bCSourceID = BADD_CLOCK_SOURCE,
+ .bmControls = 0x00000000,
+ .wExTerminalDescrID = 0x0000,
+ .wConnectorsDescrID = 0x0000,
+ .wTerminalDescrStr = 0x0000
+};
+
+struct uac3_output_terminal_descriptor badd_baif_out_term_desc = {
+ .bLength = UAC3_DT_OUTPUT_TERMINAL_SIZE,
+ .bDescriptorType = USB_DT_CS_INTERFACE,
+ .bDescriptorSubtype = UAC_OUTPUT_TERMINAL,
+ .bTerminalID = BADD_OUT_TERM_ID_BAIF,
+ .wTerminalType = UAC_TERMINAL_STREAMING,
+ .bAssocTerminal = 0x00, /* No associated terminal */
+ .bSourceID = BADD_FU_ID_BAIF,
+ .bCSourceID = BADD_CLOCK_SOURCE,
+ .bmControls = 0x00000000, /* No controls */
+ .wExTerminalDescrID = 0x0000,
+ .wConnectorsDescrID = 0x0000,
+ .wTerminalDescrStr = 0x0000
+};
+
+struct uac3_output_terminal_descriptor badd_baof_out_term_desc = {
+ .bLength = UAC3_DT_OUTPUT_TERMINAL_SIZE,
+ .bDescriptorType = USB_DT_CS_INTERFACE,
+ .bDescriptorSubtype = UAC_OUTPUT_TERMINAL,
+ .bTerminalID = BADD_OUT_TERM_ID_BAOF,
+ .bSourceID = BADD_FU_ID_BAOF,
+ .bCSourceID = BADD_CLOCK_SOURCE,
+ .wExTerminalDescrID = 0x0000,
+ .wTerminalDescrStr = 0x0000
+};
+
+__u8 monoControls[] = {
+ 0x03, 0x00, 0x00, 0x00,
+ 0x0c, 0x00, 0x00, 0x00};
+
+__u8 stereoControls[] = {
+ 0x03, 0x00, 0x00, 0x00,
+ 0x0c, 0x00, 0x00, 0x00,
+ 0x0c, 0x00, 0x00, 0x00
+};
+
+__u8 badd_mu_src_ids[] = {BADD_IN_TERM_ID_BAOF, BADD_FU_ID_BAIOF};
+
+struct uac3_mixer_unit_descriptor badd_baiof_mu_desc = {
+ .bLength = UAC3_DT_MIXER_UNIT_SIZE,
+ .bDescriptorType = USB_DT_CS_INTERFACE,
+ .bDescriptorSubtype = UAC3_MIXER_UNIT_V3,
+ .bUnitID = BADD_MU_ID_BAIOF,
+ .bNrInPins = 0x02,
+ .baSourceID = badd_mu_src_ids,
+ .bmMixerControls = 0x00,
+ .bmControls = 0x00000000,
+ .wMixerDescrStr = 0x0000
+};
+
+struct uac3_feature_unit_descriptor badd_baif_fu_desc = {
+ .bDescriptorType = USB_DT_CS_INTERFACE,
+ .bDescriptorSubtype = UAC3_FEATURE_UNIT_V3,
+ .bUnitID = BADD_FU_ID_BAIF,
+ .bSourceID = BADD_IN_TERM_ID_BAIF,
+ .wFeatureDescrStr = 0x0000
+};
+
+struct uac3_feature_unit_descriptor badd_baof_fu_desc = {
+ .bDescriptorType = USB_DT_CS_INTERFACE,
+ .bDescriptorSubtype = UAC3_FEATURE_UNIT_V3,
+ .bUnitID = BADD_FU_ID_BAOF,
+ .wFeatureDescrStr = 0x0000
+};
+
+struct uac3_feature_unit_descriptor badd_baiof_fu_desc = {
+ .bLength = 0x0f,
+ .bDescriptorType = USB_DT_CS_INTERFACE,
+ .bDescriptorSubtype = UAC3_FEATURE_UNIT_V3,
+ .bUnitID = BADD_FU_ID_BAIOF,
+ .bSourceID = BADD_IN_TERM_ID_BAIF,
+ .bmaControls = monoControls,
+ .wFeatureDescrStr = 0x0000
+};
+
+struct uac3_clock_source_descriptor badd_clock_desc = {
+ .bLength = UAC3_DT_CLOCK_SRC_SIZE,
+ .bDescriptorType = USB_DT_CS_INTERFACE,
+ .bDescriptorSubtype = UAC3_CLOCK_SOURCE,
+ .bClockID = BADD_CLOCK_SOURCE,
+ .bmControls = 0x00000001,
+ .bReferenceTerminal = 0x00,
+ .wClockSourceStr = 0x0000
+};
+
+void *badd_desc_list[] = {
+ &badd_baif_in_term_desc,
+ &badd_baof_in_term_desc,
+ &badd_baiof_mu_desc,
+ &badd_baif_fu_desc,
+ &badd_baof_fu_desc,
+ &badd_baiof_fu_desc,
+ &badd_clock_desc
+};
+