2246 lines
62 KiB
C
2246 lines
62 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* f_uac2.c -- USB Audio Class 2.0 Function
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*
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* Copyright (C) 2011
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* Yadwinder Singh (yadi.brar01@gmail.com)
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* Jaswinder Singh (jaswinder.singh@linaro.org)
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*
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* Copyright (C) 2020
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* Ruslan Bilovol (ruslan.bilovol@gmail.com)
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*/
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#include <linux/usb/audio.h>
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#include <linux/usb/audio-v2.h>
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#include <linux/module.h>
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#include "u_audio.h"
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#include "u_uac2.h"
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/* UAC2 spec: 4.1 Audio Channel Cluster Descriptor */
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#define UAC2_CHANNEL_MASK 0x07FFFFFF
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/*
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* The driver implements a simple UAC_2 topology.
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* USB-OUT -> IT_1 -> FU -> OT_3 -> ALSA_Capture
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* ALSA_Playback -> IT_2 -> FU -> OT_4 -> USB-IN
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* Capture and Playback sampling rates are independently
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* controlled by two clock sources :
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* CLK_5 := c_srate, and CLK_6 := p_srate
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*/
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#define USB_OUT_CLK_ID (out_clk_src_desc.bClockID)
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#define USB_IN_CLK_ID (in_clk_src_desc.bClockID)
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#define USB_OUT_FU_ID (out_feature_unit_desc->bUnitID)
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#define USB_IN_FU_ID (in_feature_unit_desc->bUnitID)
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#define CONTROL_ABSENT 0
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#define CONTROL_RDONLY 1
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#define CONTROL_RDWR 3
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#define CLK_FREQ_CTRL 0
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#define CLK_VLD_CTRL 2
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#define FU_MUTE_CTRL 0
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#define FU_VOL_CTRL 2
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#define COPY_CTRL 0
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#define CONN_CTRL 2
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#define OVRLD_CTRL 4
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#define CLSTR_CTRL 6
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#define UNFLW_CTRL 8
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#define OVFLW_CTRL 10
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#define EPIN_EN(_opts) ((_opts)->p_chmask != 0)
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#define EPOUT_EN(_opts) ((_opts)->c_chmask != 0)
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#define FUIN_EN(_opts) (EPIN_EN(_opts) \
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&& ((_opts)->p_mute_present \
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|| (_opts)->p_volume_present))
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#define FUOUT_EN(_opts) (EPOUT_EN(_opts) \
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&& ((_opts)->c_mute_present \
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|| (_opts)->c_volume_present))
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#define EPOUT_FBACK_IN_EN(_opts) ((_opts)->c_sync == USB_ENDPOINT_SYNC_ASYNC)
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struct f_uac2 {
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struct g_audio g_audio;
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u8 ac_intf, as_in_intf, as_out_intf;
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u8 ac_alt, as_in_alt, as_out_alt; /* needed for get_alt() */
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struct usb_ctrlrequest setup_cr; /* will be used in data stage */
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/* Interrupt IN endpoint of AC interface */
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struct usb_ep *int_ep;
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atomic_t int_count;
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/* transient state, only valid during handling of a single control request */
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int clock_id;
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};
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static inline struct f_uac2 *func_to_uac2(struct usb_function *f)
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{
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return container_of(f, struct f_uac2, g_audio.func);
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}
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static inline
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struct f_uac2_opts *g_audio_to_uac2_opts(struct g_audio *agdev)
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{
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return container_of(agdev->func.fi, struct f_uac2_opts, func_inst);
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}
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static int afunc_notify(struct g_audio *agdev, int unit_id, int cs);
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/* --------- USB Function Interface ------------- */
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enum {
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STR_ASSOC,
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STR_IF_CTRL,
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STR_CLKSRC_IN,
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STR_CLKSRC_OUT,
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STR_USB_IT,
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STR_IO_IT,
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STR_USB_OT,
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STR_IO_OT,
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STR_FU_IN,
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STR_FU_OUT,
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STR_AS_OUT_ALT0,
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STR_AS_OUT_ALT1,
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STR_AS_IN_ALT0,
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STR_AS_IN_ALT1,
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};
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static struct usb_string strings_fn[] = {
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/* [STR_ASSOC].s = DYNAMIC, */
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[STR_IF_CTRL].s = "Topology Control",
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[STR_CLKSRC_IN].s = "Input Clock",
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[STR_CLKSRC_OUT].s = "Output Clock",
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[STR_USB_IT].s = "USBH Out",
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[STR_IO_IT].s = "USBD Out",
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[STR_USB_OT].s = "USBH In",
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[STR_IO_OT].s = "USBD In",
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[STR_FU_IN].s = "Capture Volume",
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[STR_FU_OUT].s = "Playback Volume",
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[STR_AS_OUT_ALT0].s = "Playback Inactive",
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[STR_AS_OUT_ALT1].s = "Playback Active",
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[STR_AS_IN_ALT0].s = "Capture Inactive",
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[STR_AS_IN_ALT1].s = "Capture Active",
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{ },
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};
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static const char *const speed_names[] = {
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[USB_SPEED_UNKNOWN] = "UNKNOWN",
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[USB_SPEED_LOW] = "LS",
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[USB_SPEED_FULL] = "FS",
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[USB_SPEED_HIGH] = "HS",
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[USB_SPEED_WIRELESS] = "W",
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[USB_SPEED_SUPER] = "SS",
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[USB_SPEED_SUPER_PLUS] = "SS+",
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};
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static struct usb_gadget_strings str_fn = {
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.language = 0x0409, /* en-us */
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.strings = strings_fn,
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};
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static struct usb_gadget_strings *fn_strings[] = {
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&str_fn,
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NULL,
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};
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static struct usb_interface_assoc_descriptor iad_desc = {
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.bLength = sizeof iad_desc,
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.bDescriptorType = USB_DT_INTERFACE_ASSOCIATION,
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.bFirstInterface = 0,
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.bInterfaceCount = 3,
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.bFunctionClass = USB_CLASS_AUDIO,
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.bFunctionSubClass = UAC2_FUNCTION_SUBCLASS_UNDEFINED,
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.bFunctionProtocol = UAC_VERSION_2,
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};
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/* Audio Control Interface */
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static struct usb_interface_descriptor std_ac_if_desc = {
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.bLength = sizeof std_ac_if_desc,
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.bDescriptorType = USB_DT_INTERFACE,
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.bAlternateSetting = 0,
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/* .bNumEndpoints = DYNAMIC */
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.bInterfaceClass = USB_CLASS_AUDIO,
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.bInterfaceSubClass = USB_SUBCLASS_AUDIOCONTROL,
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.bInterfaceProtocol = UAC_VERSION_2,
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};
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/* Clock source for IN traffic */
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static struct uac_clock_source_descriptor in_clk_src_desc = {
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.bLength = sizeof in_clk_src_desc,
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.bDescriptorType = USB_DT_CS_INTERFACE,
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.bDescriptorSubtype = UAC2_CLOCK_SOURCE,
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/* .bClockID = DYNAMIC */
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.bmAttributes = UAC_CLOCK_SOURCE_TYPE_INT_FIXED,
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.bmControls = (CONTROL_RDWR << CLK_FREQ_CTRL),
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.bAssocTerminal = 0,
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};
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/* Clock source for OUT traffic */
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static struct uac_clock_source_descriptor out_clk_src_desc = {
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.bLength = sizeof out_clk_src_desc,
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.bDescriptorType = USB_DT_CS_INTERFACE,
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.bDescriptorSubtype = UAC2_CLOCK_SOURCE,
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/* .bClockID = DYNAMIC */
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.bmAttributes = UAC_CLOCK_SOURCE_TYPE_INT_FIXED,
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.bmControls = (CONTROL_RDWR << CLK_FREQ_CTRL),
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.bAssocTerminal = 0,
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};
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/* Input Terminal for USB_OUT */
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static struct uac2_input_terminal_descriptor usb_out_it_desc = {
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.bLength = sizeof usb_out_it_desc,
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.bDescriptorType = USB_DT_CS_INTERFACE,
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.bDescriptorSubtype = UAC_INPUT_TERMINAL,
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/* .bTerminalID = DYNAMIC */
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.wTerminalType = cpu_to_le16(UAC_TERMINAL_STREAMING),
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.bAssocTerminal = 0,
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/* .bCSourceID = DYNAMIC */
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.iChannelNames = 0,
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.bmControls = cpu_to_le16(CONTROL_RDWR << COPY_CTRL),
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};
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/* Input Terminal for I/O-In */
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static struct uac2_input_terminal_descriptor io_in_it_desc = {
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.bLength = sizeof io_in_it_desc,
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.bDescriptorType = USB_DT_CS_INTERFACE,
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.bDescriptorSubtype = UAC_INPUT_TERMINAL,
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/* .bTerminalID = DYNAMIC */
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.wTerminalType = cpu_to_le16(UAC_INPUT_TERMINAL_MICROPHONE),
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.bAssocTerminal = 0,
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/* .bCSourceID = DYNAMIC */
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.iChannelNames = 0,
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.bmControls = cpu_to_le16(CONTROL_RDWR << COPY_CTRL),
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};
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/* Ouput Terminal for USB_IN */
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static struct uac2_output_terminal_descriptor usb_in_ot_desc = {
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.bLength = sizeof usb_in_ot_desc,
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.bDescriptorType = USB_DT_CS_INTERFACE,
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.bDescriptorSubtype = UAC_OUTPUT_TERMINAL,
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/* .bTerminalID = DYNAMIC */
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.wTerminalType = cpu_to_le16(UAC_TERMINAL_STREAMING),
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.bAssocTerminal = 0,
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/* .bSourceID = DYNAMIC */
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/* .bCSourceID = DYNAMIC */
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.bmControls = cpu_to_le16(CONTROL_RDWR << COPY_CTRL),
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};
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/* Ouput Terminal for I/O-Out */
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static struct uac2_output_terminal_descriptor io_out_ot_desc = {
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.bLength = sizeof io_out_ot_desc,
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.bDescriptorType = USB_DT_CS_INTERFACE,
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.bDescriptorSubtype = UAC_OUTPUT_TERMINAL,
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/* .bTerminalID = DYNAMIC */
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.wTerminalType = cpu_to_le16(UAC_OUTPUT_TERMINAL_SPEAKER),
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.bAssocTerminal = 0,
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/* .bSourceID = DYNAMIC */
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/* .bCSourceID = DYNAMIC */
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.bmControls = cpu_to_le16(CONTROL_RDWR << COPY_CTRL),
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};
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static struct uac2_feature_unit_descriptor *in_feature_unit_desc;
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static struct uac2_feature_unit_descriptor *out_feature_unit_desc;
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static struct uac2_ac_header_descriptor ac_hdr_desc = {
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.bLength = sizeof ac_hdr_desc,
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.bDescriptorType = USB_DT_CS_INTERFACE,
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.bDescriptorSubtype = UAC_MS_HEADER,
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.bcdADC = cpu_to_le16(0x200),
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.bCategory = UAC2_FUNCTION_IO_BOX,
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/* .wTotalLength = DYNAMIC */
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.bmControls = 0,
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};
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/* AC IN Interrupt Endpoint */
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static struct usb_endpoint_descriptor fs_ep_int_desc = {
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.bLength = USB_DT_ENDPOINT_SIZE,
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.bDescriptorType = USB_DT_ENDPOINT,
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.bEndpointAddress = USB_DIR_IN,
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.bmAttributes = USB_ENDPOINT_XFER_INT,
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.wMaxPacketSize = cpu_to_le16(6),
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.bInterval = 1,
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};
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static struct usb_endpoint_descriptor hs_ep_int_desc = {
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.bLength = USB_DT_ENDPOINT_SIZE,
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.bDescriptorType = USB_DT_ENDPOINT,
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.bmAttributes = USB_ENDPOINT_XFER_INT,
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.wMaxPacketSize = cpu_to_le16(6),
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.bInterval = 4,
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};
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static struct usb_endpoint_descriptor ss_ep_int_desc = {
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.bLength = USB_DT_ENDPOINT_SIZE,
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.bDescriptorType = USB_DT_ENDPOINT,
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.bEndpointAddress = USB_DIR_IN,
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.bmAttributes = USB_ENDPOINT_XFER_INT,
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.wMaxPacketSize = cpu_to_le16(6),
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.bInterval = 4,
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};
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static struct usb_ss_ep_comp_descriptor ss_ep_int_desc_comp = {
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.bLength = sizeof(ss_ep_int_desc_comp),
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.bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
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.wBytesPerInterval = cpu_to_le16(6),
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};
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/* Audio Streaming OUT Interface - Alt0 */
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static struct usb_interface_descriptor std_as_out_if0_desc = {
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.bLength = sizeof std_as_out_if0_desc,
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.bDescriptorType = USB_DT_INTERFACE,
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.bAlternateSetting = 0,
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.bNumEndpoints = 0,
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.bInterfaceClass = USB_CLASS_AUDIO,
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.bInterfaceSubClass = USB_SUBCLASS_AUDIOSTREAMING,
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.bInterfaceProtocol = UAC_VERSION_2,
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};
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/* Audio Streaming OUT Interface - Alt1 */
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static struct usb_interface_descriptor std_as_out_if1_desc = {
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.bLength = sizeof std_as_out_if1_desc,
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.bDescriptorType = USB_DT_INTERFACE,
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.bAlternateSetting = 1,
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.bNumEndpoints = 1,
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.bInterfaceClass = USB_CLASS_AUDIO,
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.bInterfaceSubClass = USB_SUBCLASS_AUDIOSTREAMING,
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.bInterfaceProtocol = UAC_VERSION_2,
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};
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/* Audio Stream OUT Intface Desc */
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static struct uac2_as_header_descriptor as_out_hdr_desc = {
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.bLength = sizeof as_out_hdr_desc,
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.bDescriptorType = USB_DT_CS_INTERFACE,
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.bDescriptorSubtype = UAC_AS_GENERAL,
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/* .bTerminalLink = DYNAMIC */
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.bmControls = 0,
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.bFormatType = UAC_FORMAT_TYPE_I,
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.bmFormats = cpu_to_le32(UAC_FORMAT_TYPE_I_PCM),
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.iChannelNames = 0,
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};
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/* Audio USB_OUT Format */
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static struct uac2_format_type_i_descriptor as_out_fmt1_desc = {
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.bLength = sizeof as_out_fmt1_desc,
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.bDescriptorType = USB_DT_CS_INTERFACE,
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.bDescriptorSubtype = UAC_FORMAT_TYPE,
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.bFormatType = UAC_FORMAT_TYPE_I,
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};
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/* STD AS ISO OUT Endpoint */
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static struct usb_endpoint_descriptor fs_epout_desc = {
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.bLength = USB_DT_ENDPOINT_SIZE,
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.bDescriptorType = USB_DT_ENDPOINT,
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.bEndpointAddress = USB_DIR_OUT,
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/* .bmAttributes = DYNAMIC */
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/* .wMaxPacketSize = DYNAMIC */
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.bInterval = 1,
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};
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static struct usb_endpoint_descriptor hs_epout_desc = {
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.bLength = USB_DT_ENDPOINT_SIZE,
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.bDescriptorType = USB_DT_ENDPOINT,
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/* .bmAttributes = DYNAMIC */
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/* .wMaxPacketSize = DYNAMIC */
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/* .bInterval = DYNAMIC */
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};
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static struct usb_endpoint_descriptor ss_epout_desc = {
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.bLength = USB_DT_ENDPOINT_SIZE,
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.bDescriptorType = USB_DT_ENDPOINT,
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.bEndpointAddress = USB_DIR_OUT,
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/* .bmAttributes = DYNAMIC */
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/* .wMaxPacketSize = DYNAMIC */
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/* .bInterval = DYNAMIC */
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};
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static struct usb_ss_ep_comp_descriptor ss_epout_desc_comp = {
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.bLength = sizeof(ss_epout_desc_comp),
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.bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
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.bMaxBurst = 0,
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.bmAttributes = 0,
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/* wBytesPerInterval = DYNAMIC */
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};
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/* CS AS ISO OUT Endpoint */
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static struct uac2_iso_endpoint_descriptor as_iso_out_desc = {
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.bLength = sizeof as_iso_out_desc,
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.bDescriptorType = USB_DT_CS_ENDPOINT,
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.bDescriptorSubtype = UAC_EP_GENERAL,
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.bmAttributes = 0,
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.bmControls = 0,
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.bLockDelayUnits = 0,
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.wLockDelay = 0,
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};
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/* STD AS ISO IN Feedback Endpoint */
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static struct usb_endpoint_descriptor fs_epin_fback_desc = {
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.bLength = USB_DT_ENDPOINT_SIZE,
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.bDescriptorType = USB_DT_ENDPOINT,
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.bEndpointAddress = USB_DIR_IN,
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.bmAttributes = USB_ENDPOINT_XFER_ISOC | USB_ENDPOINT_USAGE_FEEDBACK,
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.wMaxPacketSize = cpu_to_le16(3),
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.bInterval = 1,
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};
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static struct usb_endpoint_descriptor hs_epin_fback_desc = {
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.bLength = USB_DT_ENDPOINT_SIZE,
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.bDescriptorType = USB_DT_ENDPOINT,
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.bmAttributes = USB_ENDPOINT_XFER_ISOC | USB_ENDPOINT_USAGE_FEEDBACK,
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.wMaxPacketSize = cpu_to_le16(4),
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.bInterval = 4,
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};
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static struct usb_endpoint_descriptor ss_epin_fback_desc = {
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.bLength = USB_DT_ENDPOINT_SIZE,
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.bDescriptorType = USB_DT_ENDPOINT,
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.bEndpointAddress = USB_DIR_IN,
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.bmAttributes = USB_ENDPOINT_XFER_ISOC | USB_ENDPOINT_USAGE_FEEDBACK,
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.wMaxPacketSize = cpu_to_le16(4),
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.bInterval = 4,
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};
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static struct usb_ss_ep_comp_descriptor ss_epin_fback_desc_comp = {
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.bLength = sizeof(ss_epin_fback_desc_comp),
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.bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
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.bMaxBurst = 0,
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.bmAttributes = 0,
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.wBytesPerInterval = cpu_to_le16(4),
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};
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/* Audio Streaming IN Interface - Alt0 */
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static struct usb_interface_descriptor std_as_in_if0_desc = {
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.bLength = sizeof std_as_in_if0_desc,
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.bDescriptorType = USB_DT_INTERFACE,
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.bAlternateSetting = 0,
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.bNumEndpoints = 0,
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.bInterfaceClass = USB_CLASS_AUDIO,
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.bInterfaceSubClass = USB_SUBCLASS_AUDIOSTREAMING,
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.bInterfaceProtocol = UAC_VERSION_2,
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};
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/* Audio Streaming IN Interface - Alt1 */
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static struct usb_interface_descriptor std_as_in_if1_desc = {
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.bLength = sizeof std_as_in_if1_desc,
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.bDescriptorType = USB_DT_INTERFACE,
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.bAlternateSetting = 1,
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.bNumEndpoints = 1,
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.bInterfaceClass = USB_CLASS_AUDIO,
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.bInterfaceSubClass = USB_SUBCLASS_AUDIOSTREAMING,
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.bInterfaceProtocol = UAC_VERSION_2,
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};
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/* Audio Stream IN Intface Desc */
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static struct uac2_as_header_descriptor as_in_hdr_desc = {
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.bLength = sizeof as_in_hdr_desc,
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.bDescriptorType = USB_DT_CS_INTERFACE,
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.bDescriptorSubtype = UAC_AS_GENERAL,
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/* .bTerminalLink = DYNAMIC */
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.bmControls = 0,
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.bFormatType = UAC_FORMAT_TYPE_I,
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.bmFormats = cpu_to_le32(UAC_FORMAT_TYPE_I_PCM),
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.iChannelNames = 0,
|
|
};
|
|
|
|
/* Audio USB_IN Format */
|
|
static struct uac2_format_type_i_descriptor as_in_fmt1_desc = {
|
|
.bLength = sizeof as_in_fmt1_desc,
|
|
.bDescriptorType = USB_DT_CS_INTERFACE,
|
|
.bDescriptorSubtype = UAC_FORMAT_TYPE,
|
|
.bFormatType = UAC_FORMAT_TYPE_I,
|
|
};
|
|
|
|
/* STD AS ISO IN Endpoint */
|
|
static struct usb_endpoint_descriptor fs_epin_desc = {
|
|
.bLength = USB_DT_ENDPOINT_SIZE,
|
|
.bDescriptorType = USB_DT_ENDPOINT,
|
|
|
|
.bEndpointAddress = USB_DIR_IN,
|
|
.bmAttributes = USB_ENDPOINT_XFER_ISOC | USB_ENDPOINT_SYNC_ASYNC,
|
|
/* .wMaxPacketSize = DYNAMIC */
|
|
.bInterval = 1,
|
|
};
|
|
|
|
static struct usb_endpoint_descriptor hs_epin_desc = {
|
|
.bLength = USB_DT_ENDPOINT_SIZE,
|
|
.bDescriptorType = USB_DT_ENDPOINT,
|
|
|
|
.bmAttributes = USB_ENDPOINT_XFER_ISOC | USB_ENDPOINT_SYNC_ASYNC,
|
|
/* .wMaxPacketSize = DYNAMIC */
|
|
/* .bInterval = DYNAMIC */
|
|
};
|
|
|
|
static struct usb_endpoint_descriptor ss_epin_desc = {
|
|
.bLength = USB_DT_ENDPOINT_SIZE,
|
|
.bDescriptorType = USB_DT_ENDPOINT,
|
|
|
|
.bEndpointAddress = USB_DIR_IN,
|
|
.bmAttributes = USB_ENDPOINT_XFER_ISOC | USB_ENDPOINT_SYNC_ASYNC,
|
|
/* .wMaxPacketSize = DYNAMIC */
|
|
/* .bInterval = DYNAMIC */
|
|
};
|
|
|
|
static struct usb_ss_ep_comp_descriptor ss_epin_desc_comp = {
|
|
.bLength = sizeof(ss_epin_desc_comp),
|
|
.bDescriptorType = USB_DT_SS_ENDPOINT_COMP,
|
|
.bMaxBurst = 0,
|
|
.bmAttributes = 0,
|
|
/* wBytesPerInterval = DYNAMIC */
|
|
};
|
|
|
|
/* CS AS ISO IN Endpoint */
|
|
static struct uac2_iso_endpoint_descriptor as_iso_in_desc = {
|
|
.bLength = sizeof as_iso_in_desc,
|
|
.bDescriptorType = USB_DT_CS_ENDPOINT,
|
|
|
|
.bDescriptorSubtype = UAC_EP_GENERAL,
|
|
.bmAttributes = 0,
|
|
.bmControls = 0,
|
|
.bLockDelayUnits = 0,
|
|
.wLockDelay = 0,
|
|
};
|
|
|
|
static struct usb_descriptor_header *fs_audio_desc[] = {
|
|
(struct usb_descriptor_header *)&iad_desc,
|
|
(struct usb_descriptor_header *)&std_ac_if_desc,
|
|
|
|
(struct usb_descriptor_header *)&ac_hdr_desc,
|
|
(struct usb_descriptor_header *)&in_clk_src_desc,
|
|
(struct usb_descriptor_header *)&out_clk_src_desc,
|
|
(struct usb_descriptor_header *)&usb_out_it_desc,
|
|
(struct usb_descriptor_header *)&out_feature_unit_desc,
|
|
(struct usb_descriptor_header *)&io_in_it_desc,
|
|
(struct usb_descriptor_header *)&usb_in_ot_desc,
|
|
(struct usb_descriptor_header *)&in_feature_unit_desc,
|
|
(struct usb_descriptor_header *)&io_out_ot_desc,
|
|
|
|
(struct usb_descriptor_header *)&fs_ep_int_desc,
|
|
|
|
(struct usb_descriptor_header *)&std_as_out_if0_desc,
|
|
(struct usb_descriptor_header *)&std_as_out_if1_desc,
|
|
|
|
(struct usb_descriptor_header *)&as_out_hdr_desc,
|
|
(struct usb_descriptor_header *)&as_out_fmt1_desc,
|
|
(struct usb_descriptor_header *)&fs_epout_desc,
|
|
(struct usb_descriptor_header *)&as_iso_out_desc,
|
|
(struct usb_descriptor_header *)&fs_epin_fback_desc,
|
|
|
|
(struct usb_descriptor_header *)&std_as_in_if0_desc,
|
|
(struct usb_descriptor_header *)&std_as_in_if1_desc,
|
|
|
|
(struct usb_descriptor_header *)&as_in_hdr_desc,
|
|
(struct usb_descriptor_header *)&as_in_fmt1_desc,
|
|
(struct usb_descriptor_header *)&fs_epin_desc,
|
|
(struct usb_descriptor_header *)&as_iso_in_desc,
|
|
NULL,
|
|
};
|
|
|
|
static struct usb_descriptor_header *hs_audio_desc[] = {
|
|
(struct usb_descriptor_header *)&iad_desc,
|
|
(struct usb_descriptor_header *)&std_ac_if_desc,
|
|
|
|
(struct usb_descriptor_header *)&ac_hdr_desc,
|
|
(struct usb_descriptor_header *)&in_clk_src_desc,
|
|
(struct usb_descriptor_header *)&out_clk_src_desc,
|
|
(struct usb_descriptor_header *)&usb_out_it_desc,
|
|
(struct usb_descriptor_header *)&out_feature_unit_desc,
|
|
(struct usb_descriptor_header *)&io_in_it_desc,
|
|
(struct usb_descriptor_header *)&usb_in_ot_desc,
|
|
(struct usb_descriptor_header *)&in_feature_unit_desc,
|
|
(struct usb_descriptor_header *)&io_out_ot_desc,
|
|
|
|
(struct usb_descriptor_header *)&hs_ep_int_desc,
|
|
|
|
(struct usb_descriptor_header *)&std_as_out_if0_desc,
|
|
(struct usb_descriptor_header *)&std_as_out_if1_desc,
|
|
|
|
(struct usb_descriptor_header *)&as_out_hdr_desc,
|
|
(struct usb_descriptor_header *)&as_out_fmt1_desc,
|
|
(struct usb_descriptor_header *)&hs_epout_desc,
|
|
(struct usb_descriptor_header *)&as_iso_out_desc,
|
|
(struct usb_descriptor_header *)&hs_epin_fback_desc,
|
|
|
|
(struct usb_descriptor_header *)&std_as_in_if0_desc,
|
|
(struct usb_descriptor_header *)&std_as_in_if1_desc,
|
|
|
|
(struct usb_descriptor_header *)&as_in_hdr_desc,
|
|
(struct usb_descriptor_header *)&as_in_fmt1_desc,
|
|
(struct usb_descriptor_header *)&hs_epin_desc,
|
|
(struct usb_descriptor_header *)&as_iso_in_desc,
|
|
NULL,
|
|
};
|
|
|
|
static struct usb_descriptor_header *ss_audio_desc[] = {
|
|
(struct usb_descriptor_header *)&iad_desc,
|
|
(struct usb_descriptor_header *)&std_ac_if_desc,
|
|
|
|
(struct usb_descriptor_header *)&ac_hdr_desc,
|
|
(struct usb_descriptor_header *)&in_clk_src_desc,
|
|
(struct usb_descriptor_header *)&out_clk_src_desc,
|
|
(struct usb_descriptor_header *)&usb_out_it_desc,
|
|
(struct usb_descriptor_header *)&out_feature_unit_desc,
|
|
(struct usb_descriptor_header *)&io_in_it_desc,
|
|
(struct usb_descriptor_header *)&usb_in_ot_desc,
|
|
(struct usb_descriptor_header *)&in_feature_unit_desc,
|
|
(struct usb_descriptor_header *)&io_out_ot_desc,
|
|
|
|
(struct usb_descriptor_header *)&ss_ep_int_desc,
|
|
(struct usb_descriptor_header *)&ss_ep_int_desc_comp,
|
|
|
|
(struct usb_descriptor_header *)&std_as_out_if0_desc,
|
|
(struct usb_descriptor_header *)&std_as_out_if1_desc,
|
|
|
|
(struct usb_descriptor_header *)&as_out_hdr_desc,
|
|
(struct usb_descriptor_header *)&as_out_fmt1_desc,
|
|
(struct usb_descriptor_header *)&ss_epout_desc,
|
|
(struct usb_descriptor_header *)&ss_epout_desc_comp,
|
|
(struct usb_descriptor_header *)&as_iso_out_desc,
|
|
(struct usb_descriptor_header *)&ss_epin_fback_desc,
|
|
(struct usb_descriptor_header *)&ss_epin_fback_desc_comp,
|
|
|
|
(struct usb_descriptor_header *)&std_as_in_if0_desc,
|
|
(struct usb_descriptor_header *)&std_as_in_if1_desc,
|
|
|
|
(struct usb_descriptor_header *)&as_in_hdr_desc,
|
|
(struct usb_descriptor_header *)&as_in_fmt1_desc,
|
|
(struct usb_descriptor_header *)&ss_epin_desc,
|
|
(struct usb_descriptor_header *)&ss_epin_desc_comp,
|
|
(struct usb_descriptor_header *)&as_iso_in_desc,
|
|
NULL,
|
|
};
|
|
|
|
struct cntrl_cur_lay2 {
|
|
__le16 wCUR;
|
|
};
|
|
|
|
struct cntrl_range_lay2 {
|
|
__le16 wNumSubRanges;
|
|
__le16 wMIN;
|
|
__le16 wMAX;
|
|
__le16 wRES;
|
|
} __packed;
|
|
|
|
struct cntrl_cur_lay3 {
|
|
__le32 dCUR;
|
|
};
|
|
|
|
struct cntrl_subrange_lay3 {
|
|
__le32 dMIN;
|
|
__le32 dMAX;
|
|
__le32 dRES;
|
|
} __packed;
|
|
|
|
#define ranges_lay3_size(c) (sizeof(c.wNumSubRanges) \
|
|
+ le16_to_cpu(c.wNumSubRanges) \
|
|
* sizeof(struct cntrl_subrange_lay3))
|
|
|
|
#define DECLARE_UAC2_CNTRL_RANGES_LAY3(k, n) \
|
|
struct cntrl_ranges_lay3_##k { \
|
|
__le16 wNumSubRanges; \
|
|
struct cntrl_subrange_lay3 r[n]; \
|
|
} __packed
|
|
|
|
DECLARE_UAC2_CNTRL_RANGES_LAY3(srates, UAC_MAX_RATES);
|
|
|
|
static int get_max_srate(const int *srates)
|
|
{
|
|
int i, max_srate = 0;
|
|
|
|
for (i = 0; i < UAC_MAX_RATES; i++) {
|
|
if (srates[i] == 0)
|
|
break;
|
|
if (srates[i] > max_srate)
|
|
max_srate = srates[i];
|
|
}
|
|
return max_srate;
|
|
}
|
|
|
|
static int get_max_bw_for_bint(const struct f_uac2_opts *uac2_opts,
|
|
u8 bint, unsigned int factor, bool is_playback)
|
|
{
|
|
int chmask, srate, ssize;
|
|
u16 max_size_bw;
|
|
|
|
if (is_playback) {
|
|
chmask = uac2_opts->p_chmask;
|
|
srate = get_max_srate(uac2_opts->p_srates);
|
|
ssize = uac2_opts->p_ssize;
|
|
} else {
|
|
chmask = uac2_opts->c_chmask;
|
|
srate = get_max_srate(uac2_opts->c_srates);
|
|
ssize = uac2_opts->c_ssize;
|
|
}
|
|
|
|
if (is_playback || (uac2_opts->c_sync == USB_ENDPOINT_SYNC_ASYNC)) {
|
|
// playback is always async, capture only when configured
|
|
// Win10 requires max packet size + 1 frame
|
|
srate = srate * (1000 + uac2_opts->fb_max) / 1000;
|
|
// updated srate is always bigger, therefore DIV_ROUND_UP always yields +1
|
|
max_size_bw = num_channels(chmask) * ssize *
|
|
(DIV_ROUND_UP(srate, factor / (1 << (bint - 1))));
|
|
} else {
|
|
// adding 1 frame provision for Win10
|
|
max_size_bw = num_channels(chmask) * ssize *
|
|
(DIV_ROUND_UP(srate, factor / (1 << (bint - 1))) + 1);
|
|
}
|
|
return max_size_bw;
|
|
}
|
|
|
|
static int set_ep_max_packet_size_bint(struct device *dev, const struct f_uac2_opts *uac2_opts,
|
|
struct usb_endpoint_descriptor *ep_desc,
|
|
enum usb_device_speed speed, bool is_playback)
|
|
{
|
|
u16 max_size_bw, max_size_ep;
|
|
u8 bint, opts_bint;
|
|
char *dir;
|
|
|
|
switch (speed) {
|
|
case USB_SPEED_FULL:
|
|
max_size_ep = 1023;
|
|
// fixed
|
|
bint = ep_desc->bInterval;
|
|
max_size_bw = get_max_bw_for_bint(uac2_opts, bint, 1000, is_playback);
|
|
break;
|
|
|
|
case USB_SPEED_HIGH:
|
|
case USB_SPEED_SUPER:
|
|
max_size_ep = 1024;
|
|
if (is_playback)
|
|
opts_bint = uac2_opts->p_hs_bint;
|
|
else
|
|
opts_bint = uac2_opts->c_hs_bint;
|
|
|
|
if (opts_bint > 0) {
|
|
/* fixed bint */
|
|
bint = opts_bint;
|
|
max_size_bw = get_max_bw_for_bint(uac2_opts, bint, 8000, is_playback);
|
|
} else {
|
|
/* checking bInterval from 4 to 1 whether the required bandwidth fits */
|
|
for (bint = 4; bint > 0; --bint) {
|
|
max_size_bw = get_max_bw_for_bint(
|
|
uac2_opts, bint, 8000, is_playback);
|
|
if (max_size_bw <= max_size_ep)
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (is_playback)
|
|
dir = "Playback";
|
|
else
|
|
dir = "Capture";
|
|
|
|
if (max_size_bw <= max_size_ep)
|
|
dev_dbg(dev,
|
|
"%s %s: Would use wMaxPacketSize %d and bInterval %d\n",
|
|
speed_names[speed], dir, max_size_bw, bint);
|
|
else {
|
|
dev_warn(dev,
|
|
"%s %s: Req. wMaxPacketSize %d at bInterval %d > max ISOC %d, may drop data!\n",
|
|
speed_names[speed], dir, max_size_bw, bint, max_size_ep);
|
|
max_size_bw = max_size_ep;
|
|
}
|
|
|
|
ep_desc->wMaxPacketSize = cpu_to_le16(max_size_bw);
|
|
ep_desc->bInterval = bint;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct uac2_feature_unit_descriptor *build_fu_desc(int chmask)
|
|
{
|
|
struct uac2_feature_unit_descriptor *fu_desc;
|
|
int channels = num_channels(chmask);
|
|
int fu_desc_size = UAC2_DT_FEATURE_UNIT_SIZE(channels);
|
|
|
|
fu_desc = kzalloc(fu_desc_size, GFP_KERNEL);
|
|
if (!fu_desc)
|
|
return NULL;
|
|
|
|
fu_desc->bLength = fu_desc_size;
|
|
fu_desc->bDescriptorType = USB_DT_CS_INTERFACE;
|
|
|
|
fu_desc->bDescriptorSubtype = UAC_FEATURE_UNIT;
|
|
|
|
/* bUnitID, bSourceID and bmaControls will be defined later */
|
|
|
|
return fu_desc;
|
|
}
|
|
|
|
/* Use macro to overcome line length limitation */
|
|
#define USBDHDR(p) (struct usb_descriptor_header *)(p)
|
|
|
|
static void setup_headers(struct f_uac2_opts *opts,
|
|
struct usb_descriptor_header **headers,
|
|
enum usb_device_speed speed)
|
|
{
|
|
struct usb_ss_ep_comp_descriptor *epout_desc_comp = NULL;
|
|
struct usb_ss_ep_comp_descriptor *epin_desc_comp = NULL;
|
|
struct usb_ss_ep_comp_descriptor *epin_fback_desc_comp = NULL;
|
|
struct usb_ss_ep_comp_descriptor *ep_int_desc_comp = NULL;
|
|
struct usb_endpoint_descriptor *epout_desc;
|
|
struct usb_endpoint_descriptor *epin_desc;
|
|
struct usb_endpoint_descriptor *epin_fback_desc;
|
|
struct usb_endpoint_descriptor *ep_int_desc;
|
|
int i;
|
|
|
|
switch (speed) {
|
|
case USB_SPEED_FULL:
|
|
epout_desc = &fs_epout_desc;
|
|
epin_desc = &fs_epin_desc;
|
|
epin_fback_desc = &fs_epin_fback_desc;
|
|
ep_int_desc = &fs_ep_int_desc;
|
|
break;
|
|
case USB_SPEED_HIGH:
|
|
epout_desc = &hs_epout_desc;
|
|
epin_desc = &hs_epin_desc;
|
|
epin_fback_desc = &hs_epin_fback_desc;
|
|
ep_int_desc = &hs_ep_int_desc;
|
|
break;
|
|
default:
|
|
epout_desc = &ss_epout_desc;
|
|
epin_desc = &ss_epin_desc;
|
|
epout_desc_comp = &ss_epout_desc_comp;
|
|
epin_desc_comp = &ss_epin_desc_comp;
|
|
epin_fback_desc = &ss_epin_fback_desc;
|
|
epin_fback_desc_comp = &ss_epin_fback_desc_comp;
|
|
ep_int_desc = &ss_ep_int_desc;
|
|
ep_int_desc_comp = &ss_ep_int_desc_comp;
|
|
}
|
|
|
|
i = 0;
|
|
headers[i++] = USBDHDR(&iad_desc);
|
|
headers[i++] = USBDHDR(&std_ac_if_desc);
|
|
headers[i++] = USBDHDR(&ac_hdr_desc);
|
|
if (EPIN_EN(opts))
|
|
headers[i++] = USBDHDR(&in_clk_src_desc);
|
|
if (EPOUT_EN(opts)) {
|
|
headers[i++] = USBDHDR(&out_clk_src_desc);
|
|
headers[i++] = USBDHDR(&usb_out_it_desc);
|
|
|
|
if (FUOUT_EN(opts))
|
|
headers[i++] = USBDHDR(out_feature_unit_desc);
|
|
}
|
|
|
|
if (EPIN_EN(opts)) {
|
|
headers[i++] = USBDHDR(&io_in_it_desc);
|
|
|
|
if (FUIN_EN(opts))
|
|
headers[i++] = USBDHDR(in_feature_unit_desc);
|
|
|
|
headers[i++] = USBDHDR(&usb_in_ot_desc);
|
|
}
|
|
|
|
if (EPOUT_EN(opts))
|
|
headers[i++] = USBDHDR(&io_out_ot_desc);
|
|
|
|
if (FUOUT_EN(opts) || FUIN_EN(opts)) {
|
|
headers[i++] = USBDHDR(ep_int_desc);
|
|
if (ep_int_desc_comp)
|
|
headers[i++] = USBDHDR(ep_int_desc_comp);
|
|
}
|
|
|
|
if (EPOUT_EN(opts)) {
|
|
headers[i++] = USBDHDR(&std_as_out_if0_desc);
|
|
headers[i++] = USBDHDR(&std_as_out_if1_desc);
|
|
headers[i++] = USBDHDR(&as_out_hdr_desc);
|
|
headers[i++] = USBDHDR(&as_out_fmt1_desc);
|
|
headers[i++] = USBDHDR(epout_desc);
|
|
if (epout_desc_comp)
|
|
headers[i++] = USBDHDR(epout_desc_comp);
|
|
|
|
headers[i++] = USBDHDR(&as_iso_out_desc);
|
|
|
|
if (EPOUT_FBACK_IN_EN(opts)) {
|
|
headers[i++] = USBDHDR(epin_fback_desc);
|
|
if (epin_fback_desc_comp)
|
|
headers[i++] = USBDHDR(epin_fback_desc_comp);
|
|
}
|
|
}
|
|
|
|
if (EPIN_EN(opts)) {
|
|
headers[i++] = USBDHDR(&std_as_in_if0_desc);
|
|
headers[i++] = USBDHDR(&std_as_in_if1_desc);
|
|
headers[i++] = USBDHDR(&as_in_hdr_desc);
|
|
headers[i++] = USBDHDR(&as_in_fmt1_desc);
|
|
headers[i++] = USBDHDR(epin_desc);
|
|
if (epin_desc_comp)
|
|
headers[i++] = USBDHDR(epin_desc_comp);
|
|
|
|
headers[i++] = USBDHDR(&as_iso_in_desc);
|
|
}
|
|
headers[i] = NULL;
|
|
}
|
|
|
|
static void setup_descriptor(struct f_uac2_opts *opts)
|
|
{
|
|
/* patch descriptors */
|
|
int i = 1; /* ID's start with 1 */
|
|
|
|
if (EPOUT_EN(opts))
|
|
usb_out_it_desc.bTerminalID = i++;
|
|
if (EPIN_EN(opts))
|
|
io_in_it_desc.bTerminalID = i++;
|
|
if (EPOUT_EN(opts))
|
|
io_out_ot_desc.bTerminalID = i++;
|
|
if (EPIN_EN(opts))
|
|
usb_in_ot_desc.bTerminalID = i++;
|
|
if (FUOUT_EN(opts))
|
|
out_feature_unit_desc->bUnitID = i++;
|
|
if (FUIN_EN(opts))
|
|
in_feature_unit_desc->bUnitID = i++;
|
|
if (EPOUT_EN(opts))
|
|
out_clk_src_desc.bClockID = i++;
|
|
if (EPIN_EN(opts))
|
|
in_clk_src_desc.bClockID = i++;
|
|
|
|
usb_out_it_desc.bCSourceID = out_clk_src_desc.bClockID;
|
|
|
|
if (FUIN_EN(opts)) {
|
|
usb_in_ot_desc.bSourceID = in_feature_unit_desc->bUnitID;
|
|
in_feature_unit_desc->bSourceID = io_in_it_desc.bTerminalID;
|
|
} else {
|
|
usb_in_ot_desc.bSourceID = io_in_it_desc.bTerminalID;
|
|
}
|
|
|
|
usb_in_ot_desc.bCSourceID = in_clk_src_desc.bClockID;
|
|
io_in_it_desc.bCSourceID = in_clk_src_desc.bClockID;
|
|
io_out_ot_desc.bCSourceID = out_clk_src_desc.bClockID;
|
|
|
|
if (FUOUT_EN(opts)) {
|
|
io_out_ot_desc.bSourceID = out_feature_unit_desc->bUnitID;
|
|
out_feature_unit_desc->bSourceID = usb_out_it_desc.bTerminalID;
|
|
} else {
|
|
io_out_ot_desc.bSourceID = usb_out_it_desc.bTerminalID;
|
|
}
|
|
|
|
as_out_hdr_desc.bTerminalLink = usb_out_it_desc.bTerminalID;
|
|
as_in_hdr_desc.bTerminalLink = usb_in_ot_desc.bTerminalID;
|
|
|
|
iad_desc.bInterfaceCount = 1;
|
|
ac_hdr_desc.wTotalLength = cpu_to_le16(sizeof(ac_hdr_desc));
|
|
|
|
if (EPIN_EN(opts)) {
|
|
u16 len = le16_to_cpu(ac_hdr_desc.wTotalLength);
|
|
|
|
len += sizeof(in_clk_src_desc);
|
|
len += sizeof(usb_in_ot_desc);
|
|
|
|
if (FUIN_EN(opts))
|
|
len += in_feature_unit_desc->bLength;
|
|
|
|
len += sizeof(io_in_it_desc);
|
|
ac_hdr_desc.wTotalLength = cpu_to_le16(len);
|
|
iad_desc.bInterfaceCount++;
|
|
}
|
|
if (EPOUT_EN(opts)) {
|
|
u16 len = le16_to_cpu(ac_hdr_desc.wTotalLength);
|
|
|
|
len += sizeof(out_clk_src_desc);
|
|
len += sizeof(usb_out_it_desc);
|
|
|
|
if (FUOUT_EN(opts))
|
|
len += out_feature_unit_desc->bLength;
|
|
|
|
len += sizeof(io_out_ot_desc);
|
|
ac_hdr_desc.wTotalLength = cpu_to_le16(len);
|
|
iad_desc.bInterfaceCount++;
|
|
}
|
|
|
|
setup_headers(opts, fs_audio_desc, USB_SPEED_FULL);
|
|
setup_headers(opts, hs_audio_desc, USB_SPEED_HIGH);
|
|
setup_headers(opts, ss_audio_desc, USB_SPEED_SUPER);
|
|
}
|
|
|
|
static int afunc_validate_opts(struct g_audio *agdev, struct device *dev)
|
|
{
|
|
struct f_uac2_opts *opts = g_audio_to_uac2_opts(agdev);
|
|
const char *msg = NULL;
|
|
|
|
if (!opts->p_chmask && !opts->c_chmask)
|
|
msg = "no playback and capture channels";
|
|
else if (opts->p_chmask & ~UAC2_CHANNEL_MASK)
|
|
msg = "unsupported playback channels mask";
|
|
else if (opts->c_chmask & ~UAC2_CHANNEL_MASK)
|
|
msg = "unsupported capture channels mask";
|
|
else if ((opts->p_ssize < 1) || (opts->p_ssize > 4))
|
|
msg = "incorrect playback sample size";
|
|
else if ((opts->c_ssize < 1) || (opts->c_ssize > 4))
|
|
msg = "incorrect capture sample size";
|
|
else if (!opts->p_srates[0])
|
|
msg = "incorrect playback sampling rate";
|
|
else if (!opts->c_srates[0])
|
|
msg = "incorrect capture sampling rate";
|
|
|
|
else if (opts->p_volume_max <= opts->p_volume_min)
|
|
msg = "incorrect playback volume max/min";
|
|
else if (opts->c_volume_max <= opts->c_volume_min)
|
|
msg = "incorrect capture volume max/min";
|
|
else if (opts->p_volume_res <= 0)
|
|
msg = "negative/zero playback volume resolution";
|
|
else if (opts->c_volume_res <= 0)
|
|
msg = "negative/zero capture volume resolution";
|
|
|
|
else if ((opts->p_volume_max - opts->p_volume_min) % opts->p_volume_res)
|
|
msg = "incorrect playback volume resolution";
|
|
else if ((opts->c_volume_max - opts->c_volume_min) % opts->c_volume_res)
|
|
msg = "incorrect capture volume resolution";
|
|
|
|
else if ((opts->p_hs_bint < 0) || (opts->p_hs_bint > 4))
|
|
msg = "incorrect playback HS/SS bInterval (1-4: fixed, 0: auto)";
|
|
else if ((opts->c_hs_bint < 0) || (opts->c_hs_bint > 4))
|
|
msg = "incorrect capture HS/SS bInterval (1-4: fixed, 0: auto)";
|
|
|
|
if (msg) {
|
|
dev_err(dev, "Error: %s\n", msg);
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
afunc_bind(struct usb_configuration *cfg, struct usb_function *fn)
|
|
{
|
|
struct f_uac2 *uac2 = func_to_uac2(fn);
|
|
struct g_audio *agdev = func_to_g_audio(fn);
|
|
struct usb_composite_dev *cdev = cfg->cdev;
|
|
struct usb_gadget *gadget = cdev->gadget;
|
|
struct device *dev = &gadget->dev;
|
|
struct f_uac2_opts *uac2_opts = g_audio_to_uac2_opts(agdev);
|
|
struct usb_string *us;
|
|
int ret;
|
|
|
|
ret = afunc_validate_opts(agdev, dev);
|
|
if (ret)
|
|
return ret;
|
|
|
|
strings_fn[STR_ASSOC].s = uac2_opts->function_name;
|
|
|
|
us = usb_gstrings_attach(cdev, fn_strings, ARRAY_SIZE(strings_fn));
|
|
if (IS_ERR(us))
|
|
return PTR_ERR(us);
|
|
|
|
if (FUOUT_EN(uac2_opts)) {
|
|
out_feature_unit_desc = build_fu_desc(uac2_opts->c_chmask);
|
|
if (!out_feature_unit_desc)
|
|
return -ENOMEM;
|
|
}
|
|
if (FUIN_EN(uac2_opts)) {
|
|
in_feature_unit_desc = build_fu_desc(uac2_opts->p_chmask);
|
|
if (!in_feature_unit_desc) {
|
|
ret = -ENOMEM;
|
|
goto err_free_fu;
|
|
}
|
|
}
|
|
|
|
iad_desc.iFunction = us[STR_ASSOC].id;
|
|
std_ac_if_desc.iInterface = us[STR_IF_CTRL].id;
|
|
in_clk_src_desc.iClockSource = us[STR_CLKSRC_IN].id;
|
|
out_clk_src_desc.iClockSource = us[STR_CLKSRC_OUT].id;
|
|
usb_out_it_desc.iTerminal = us[STR_USB_IT].id;
|
|
io_in_it_desc.iTerminal = us[STR_IO_IT].id;
|
|
usb_in_ot_desc.iTerminal = us[STR_USB_OT].id;
|
|
io_out_ot_desc.iTerminal = us[STR_IO_OT].id;
|
|
std_as_out_if0_desc.iInterface = us[STR_AS_OUT_ALT0].id;
|
|
std_as_out_if1_desc.iInterface = us[STR_AS_OUT_ALT1].id;
|
|
std_as_in_if0_desc.iInterface = us[STR_AS_IN_ALT0].id;
|
|
std_as_in_if1_desc.iInterface = us[STR_AS_IN_ALT1].id;
|
|
|
|
if (FUOUT_EN(uac2_opts)) {
|
|
u8 *i_feature = (u8 *)out_feature_unit_desc +
|
|
out_feature_unit_desc->bLength - 1;
|
|
*i_feature = us[STR_FU_OUT].id;
|
|
}
|
|
if (FUIN_EN(uac2_opts)) {
|
|
u8 *i_feature = (u8 *)in_feature_unit_desc +
|
|
in_feature_unit_desc->bLength - 1;
|
|
*i_feature = us[STR_FU_IN].id;
|
|
}
|
|
|
|
|
|
/* Initialize the configurable parameters */
|
|
usb_out_it_desc.bNrChannels = num_channels(uac2_opts->c_chmask);
|
|
usb_out_it_desc.bmChannelConfig = cpu_to_le32(uac2_opts->c_chmask);
|
|
io_in_it_desc.bNrChannels = num_channels(uac2_opts->p_chmask);
|
|
io_in_it_desc.bmChannelConfig = cpu_to_le32(uac2_opts->p_chmask);
|
|
as_out_hdr_desc.bNrChannels = num_channels(uac2_opts->c_chmask);
|
|
as_out_hdr_desc.bmChannelConfig = cpu_to_le32(uac2_opts->c_chmask);
|
|
as_in_hdr_desc.bNrChannels = num_channels(uac2_opts->p_chmask);
|
|
as_in_hdr_desc.bmChannelConfig = cpu_to_le32(uac2_opts->p_chmask);
|
|
as_out_fmt1_desc.bSubslotSize = uac2_opts->c_ssize;
|
|
as_out_fmt1_desc.bBitResolution = uac2_opts->c_ssize * 8;
|
|
as_in_fmt1_desc.bSubslotSize = uac2_opts->p_ssize;
|
|
as_in_fmt1_desc.bBitResolution = uac2_opts->p_ssize * 8;
|
|
if (FUOUT_EN(uac2_opts)) {
|
|
__le32 *bma = (__le32 *)&out_feature_unit_desc->bmaControls[0];
|
|
u32 control = 0;
|
|
|
|
if (uac2_opts->c_mute_present)
|
|
control |= CONTROL_RDWR << FU_MUTE_CTRL;
|
|
if (uac2_opts->c_volume_present)
|
|
control |= CONTROL_RDWR << FU_VOL_CTRL;
|
|
*bma = cpu_to_le32(control);
|
|
}
|
|
if (FUIN_EN(uac2_opts)) {
|
|
__le32 *bma = (__le32 *)&in_feature_unit_desc->bmaControls[0];
|
|
u32 control = 0;
|
|
|
|
if (uac2_opts->p_mute_present)
|
|
control |= CONTROL_RDWR << FU_MUTE_CTRL;
|
|
if (uac2_opts->p_volume_present)
|
|
control |= CONTROL_RDWR << FU_VOL_CTRL;
|
|
*bma = cpu_to_le32(control);
|
|
}
|
|
|
|
ret = usb_interface_id(cfg, fn);
|
|
if (ret < 0) {
|
|
dev_err(dev, "%s:%d Error!\n", __func__, __LINE__);
|
|
goto err_free_fu;
|
|
}
|
|
iad_desc.bFirstInterface = ret;
|
|
|
|
std_ac_if_desc.bInterfaceNumber = ret;
|
|
uac2->ac_intf = ret;
|
|
uac2->ac_alt = 0;
|
|
|
|
if (EPOUT_EN(uac2_opts)) {
|
|
ret = usb_interface_id(cfg, fn);
|
|
if (ret < 0) {
|
|
dev_err(dev, "%s:%d Error!\n", __func__, __LINE__);
|
|
goto err_free_fu;
|
|
}
|
|
std_as_out_if0_desc.bInterfaceNumber = ret;
|
|
std_as_out_if1_desc.bInterfaceNumber = ret;
|
|
std_as_out_if1_desc.bNumEndpoints = 1;
|
|
uac2->as_out_intf = ret;
|
|
uac2->as_out_alt = 0;
|
|
|
|
if (EPOUT_FBACK_IN_EN(uac2_opts)) {
|
|
fs_epout_desc.bmAttributes =
|
|
USB_ENDPOINT_XFER_ISOC | USB_ENDPOINT_SYNC_ASYNC;
|
|
hs_epout_desc.bmAttributes =
|
|
USB_ENDPOINT_XFER_ISOC | USB_ENDPOINT_SYNC_ASYNC;
|
|
ss_epout_desc.bmAttributes =
|
|
USB_ENDPOINT_XFER_ISOC | USB_ENDPOINT_SYNC_ASYNC;
|
|
std_as_out_if1_desc.bNumEndpoints++;
|
|
} else {
|
|
fs_epout_desc.bmAttributes =
|
|
USB_ENDPOINT_XFER_ISOC | USB_ENDPOINT_SYNC_ADAPTIVE;
|
|
hs_epout_desc.bmAttributes =
|
|
USB_ENDPOINT_XFER_ISOC | USB_ENDPOINT_SYNC_ADAPTIVE;
|
|
ss_epout_desc.bmAttributes =
|
|
USB_ENDPOINT_XFER_ISOC | USB_ENDPOINT_SYNC_ADAPTIVE;
|
|
}
|
|
}
|
|
|
|
if (EPIN_EN(uac2_opts)) {
|
|
ret = usb_interface_id(cfg, fn);
|
|
if (ret < 0) {
|
|
dev_err(dev, "%s:%d Error!\n", __func__, __LINE__);
|
|
goto err_free_fu;
|
|
}
|
|
std_as_in_if0_desc.bInterfaceNumber = ret;
|
|
std_as_in_if1_desc.bInterfaceNumber = ret;
|
|
uac2->as_in_intf = ret;
|
|
uac2->as_in_alt = 0;
|
|
}
|
|
|
|
if (FUOUT_EN(uac2_opts) || FUIN_EN(uac2_opts)) {
|
|
uac2->int_ep = usb_ep_autoconfig(gadget, &fs_ep_int_desc);
|
|
if (!uac2->int_ep) {
|
|
dev_err(dev, "%s:%d Error!\n", __func__, __LINE__);
|
|
ret = -ENODEV;
|
|
goto err_free_fu;
|
|
}
|
|
|
|
std_ac_if_desc.bNumEndpoints = 1;
|
|
}
|
|
|
|
hs_epin_desc.bInterval = uac2_opts->p_hs_bint;
|
|
ss_epin_desc.bInterval = uac2_opts->p_hs_bint;
|
|
hs_epout_desc.bInterval = uac2_opts->c_hs_bint;
|
|
ss_epout_desc.bInterval = uac2_opts->c_hs_bint;
|
|
|
|
/* Calculate wMaxPacketSize according to audio bandwidth */
|
|
ret = set_ep_max_packet_size_bint(dev, uac2_opts, &fs_epin_desc,
|
|
USB_SPEED_FULL, true);
|
|
if (ret < 0) {
|
|
dev_err(dev, "%s:%d Error!\n", __func__, __LINE__);
|
|
return ret;
|
|
}
|
|
|
|
ret = set_ep_max_packet_size_bint(dev, uac2_opts, &fs_epout_desc,
|
|
USB_SPEED_FULL, false);
|
|
if (ret < 0) {
|
|
dev_err(dev, "%s:%d Error!\n", __func__, __LINE__);
|
|
return ret;
|
|
}
|
|
|
|
ret = set_ep_max_packet_size_bint(dev, uac2_opts, &hs_epin_desc,
|
|
USB_SPEED_HIGH, true);
|
|
if (ret < 0) {
|
|
dev_err(dev, "%s:%d Error!\n", __func__, __LINE__);
|
|
return ret;
|
|
}
|
|
|
|
ret = set_ep_max_packet_size_bint(dev, uac2_opts, &hs_epout_desc,
|
|
USB_SPEED_HIGH, false);
|
|
if (ret < 0) {
|
|
dev_err(dev, "%s:%d Error!\n", __func__, __LINE__);
|
|
return ret;
|
|
}
|
|
|
|
ret = set_ep_max_packet_size_bint(dev, uac2_opts, &ss_epin_desc,
|
|
USB_SPEED_SUPER, true);
|
|
if (ret < 0) {
|
|
dev_err(dev, "%s:%d Error!\n", __func__, __LINE__);
|
|
return ret;
|
|
}
|
|
|
|
ret = set_ep_max_packet_size_bint(dev, uac2_opts, &ss_epout_desc,
|
|
USB_SPEED_SUPER, false);
|
|
if (ret < 0) {
|
|
dev_err(dev, "%s:%d Error!\n", __func__, __LINE__);
|
|
return ret;
|
|
}
|
|
|
|
if (EPOUT_EN(uac2_opts)) {
|
|
agdev->out_ep = usb_ep_autoconfig(gadget, &fs_epout_desc);
|
|
if (!agdev->out_ep) {
|
|
dev_err(dev, "%s:%d Error!\n", __func__, __LINE__);
|
|
ret = -ENODEV;
|
|
goto err_free_fu;
|
|
}
|
|
if (EPOUT_FBACK_IN_EN(uac2_opts)) {
|
|
agdev->in_ep_fback = usb_ep_autoconfig(gadget,
|
|
&fs_epin_fback_desc);
|
|
if (!agdev->in_ep_fback) {
|
|
dev_err(dev, "%s:%d Error!\n",
|
|
__func__, __LINE__);
|
|
ret = -ENODEV;
|
|
goto err_free_fu;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (EPIN_EN(uac2_opts)) {
|
|
agdev->in_ep = usb_ep_autoconfig(gadget, &fs_epin_desc);
|
|
if (!agdev->in_ep) {
|
|
dev_err(dev, "%s:%d Error!\n", __func__, __LINE__);
|
|
ret = -ENODEV;
|
|
goto err_free_fu;
|
|
}
|
|
}
|
|
|
|
agdev->in_ep_maxpsize = max_t(u16,
|
|
le16_to_cpu(fs_epin_desc.wMaxPacketSize),
|
|
le16_to_cpu(hs_epin_desc.wMaxPacketSize));
|
|
agdev->out_ep_maxpsize = max_t(u16,
|
|
le16_to_cpu(fs_epout_desc.wMaxPacketSize),
|
|
le16_to_cpu(hs_epout_desc.wMaxPacketSize));
|
|
|
|
agdev->in_ep_maxpsize = max_t(u16, agdev->in_ep_maxpsize,
|
|
le16_to_cpu(ss_epin_desc.wMaxPacketSize));
|
|
agdev->out_ep_maxpsize = max_t(u16, agdev->out_ep_maxpsize,
|
|
le16_to_cpu(ss_epout_desc.wMaxPacketSize));
|
|
|
|
ss_epin_desc_comp.wBytesPerInterval = ss_epin_desc.wMaxPacketSize;
|
|
ss_epout_desc_comp.wBytesPerInterval = ss_epout_desc.wMaxPacketSize;
|
|
|
|
// HS and SS endpoint addresses are copied from autoconfigured FS descriptors
|
|
hs_ep_int_desc.bEndpointAddress = fs_ep_int_desc.bEndpointAddress;
|
|
hs_epout_desc.bEndpointAddress = fs_epout_desc.bEndpointAddress;
|
|
hs_epin_fback_desc.bEndpointAddress = fs_epin_fback_desc.bEndpointAddress;
|
|
hs_epin_desc.bEndpointAddress = fs_epin_desc.bEndpointAddress;
|
|
ss_epout_desc.bEndpointAddress = fs_epout_desc.bEndpointAddress;
|
|
ss_epin_fback_desc.bEndpointAddress = fs_epin_fback_desc.bEndpointAddress;
|
|
ss_epin_desc.bEndpointAddress = fs_epin_desc.bEndpointAddress;
|
|
ss_ep_int_desc.bEndpointAddress = fs_ep_int_desc.bEndpointAddress;
|
|
|
|
setup_descriptor(uac2_opts);
|
|
|
|
ret = usb_assign_descriptors(fn, fs_audio_desc, hs_audio_desc, ss_audio_desc,
|
|
ss_audio_desc);
|
|
if (ret)
|
|
goto err_free_fu;
|
|
|
|
agdev->gadget = gadget;
|
|
|
|
agdev->params.p_chmask = uac2_opts->p_chmask;
|
|
memcpy(agdev->params.p_srates, uac2_opts->p_srates,
|
|
sizeof(agdev->params.p_srates));
|
|
agdev->params.p_ssize = uac2_opts->p_ssize;
|
|
if (FUIN_EN(uac2_opts)) {
|
|
agdev->params.p_fu.id = USB_IN_FU_ID;
|
|
agdev->params.p_fu.mute_present = uac2_opts->p_mute_present;
|
|
agdev->params.p_fu.volume_present = uac2_opts->p_volume_present;
|
|
agdev->params.p_fu.volume_min = uac2_opts->p_volume_min;
|
|
agdev->params.p_fu.volume_max = uac2_opts->p_volume_max;
|
|
agdev->params.p_fu.volume_res = uac2_opts->p_volume_res;
|
|
}
|
|
agdev->params.c_chmask = uac2_opts->c_chmask;
|
|
memcpy(agdev->params.c_srates, uac2_opts->c_srates,
|
|
sizeof(agdev->params.c_srates));
|
|
agdev->params.c_ssize = uac2_opts->c_ssize;
|
|
if (FUOUT_EN(uac2_opts)) {
|
|
agdev->params.c_fu.id = USB_OUT_FU_ID;
|
|
agdev->params.c_fu.mute_present = uac2_opts->c_mute_present;
|
|
agdev->params.c_fu.volume_present = uac2_opts->c_volume_present;
|
|
agdev->params.c_fu.volume_min = uac2_opts->c_volume_min;
|
|
agdev->params.c_fu.volume_max = uac2_opts->c_volume_max;
|
|
agdev->params.c_fu.volume_res = uac2_opts->c_volume_res;
|
|
}
|
|
agdev->params.req_number = uac2_opts->req_number;
|
|
agdev->params.fb_max = uac2_opts->fb_max;
|
|
|
|
if (FUOUT_EN(uac2_opts) || FUIN_EN(uac2_opts))
|
|
agdev->notify = afunc_notify;
|
|
|
|
ret = g_audio_setup(agdev, "UAC2 PCM", "UAC2_Gadget");
|
|
if (ret)
|
|
goto err_free_descs;
|
|
|
|
return 0;
|
|
|
|
err_free_descs:
|
|
usb_free_all_descriptors(fn);
|
|
agdev->gadget = NULL;
|
|
err_free_fu:
|
|
kfree(out_feature_unit_desc);
|
|
out_feature_unit_desc = NULL;
|
|
kfree(in_feature_unit_desc);
|
|
in_feature_unit_desc = NULL;
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
afunc_notify_complete(struct usb_ep *_ep, struct usb_request *req)
|
|
{
|
|
struct g_audio *agdev = req->context;
|
|
struct f_uac2 *uac2 = func_to_uac2(&agdev->func);
|
|
|
|
atomic_dec(&uac2->int_count);
|
|
kfree(req->buf);
|
|
usb_ep_free_request(_ep, req);
|
|
}
|
|
|
|
static int
|
|
afunc_notify(struct g_audio *agdev, int unit_id, int cs)
|
|
{
|
|
struct f_uac2 *uac2 = func_to_uac2(&agdev->func);
|
|
struct usb_request *req;
|
|
struct uac2_interrupt_data_msg *msg;
|
|
u16 w_index, w_value;
|
|
int ret;
|
|
|
|
if (!uac2->int_ep->enabled)
|
|
return 0;
|
|
|
|
if (atomic_inc_return(&uac2->int_count) > UAC2_DEF_INT_REQ_NUM) {
|
|
atomic_dec(&uac2->int_count);
|
|
return 0;
|
|
}
|
|
|
|
req = usb_ep_alloc_request(uac2->int_ep, GFP_ATOMIC);
|
|
if (req == NULL) {
|
|
ret = -ENOMEM;
|
|
goto err_dec_int_count;
|
|
}
|
|
|
|
msg = kzalloc(sizeof(*msg), GFP_ATOMIC);
|
|
if (msg == NULL) {
|
|
ret = -ENOMEM;
|
|
goto err_free_request;
|
|
}
|
|
|
|
w_index = unit_id << 8 | uac2->ac_intf;
|
|
w_value = cs << 8;
|
|
|
|
msg->bInfo = 0; /* Non-vendor, interface interrupt */
|
|
msg->bAttribute = UAC2_CS_CUR;
|
|
msg->wIndex = cpu_to_le16(w_index);
|
|
msg->wValue = cpu_to_le16(w_value);
|
|
|
|
req->length = sizeof(*msg);
|
|
req->buf = msg;
|
|
req->context = agdev;
|
|
req->complete = afunc_notify_complete;
|
|
|
|
ret = usb_ep_queue(uac2->int_ep, req, GFP_ATOMIC);
|
|
|
|
if (ret)
|
|
goto err_free_msg;
|
|
|
|
return 0;
|
|
|
|
err_free_msg:
|
|
kfree(msg);
|
|
err_free_request:
|
|
usb_ep_free_request(uac2->int_ep, req);
|
|
err_dec_int_count:
|
|
atomic_dec(&uac2->int_count);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int
|
|
afunc_set_alt(struct usb_function *fn, unsigned intf, unsigned alt)
|
|
{
|
|
struct usb_composite_dev *cdev = fn->config->cdev;
|
|
struct f_uac2 *uac2 = func_to_uac2(fn);
|
|
struct g_audio *agdev = func_to_g_audio(fn);
|
|
struct usb_gadget *gadget = cdev->gadget;
|
|
struct device *dev = &gadget->dev;
|
|
int ret = 0;
|
|
|
|
/* No i/f has more than 2 alt settings */
|
|
if (alt > 1) {
|
|
dev_err(dev, "%s:%d Error!\n", __func__, __LINE__);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (intf == uac2->ac_intf) {
|
|
/* Control I/f has only 1 AltSetting - 0 */
|
|
if (alt) {
|
|
dev_err(dev, "%s:%d Error!\n", __func__, __LINE__);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* restart interrupt endpoint */
|
|
if (uac2->int_ep) {
|
|
usb_ep_disable(uac2->int_ep);
|
|
config_ep_by_speed(gadget, &agdev->func, uac2->int_ep);
|
|
usb_ep_enable(uac2->int_ep);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
if (intf == uac2->as_out_intf) {
|
|
uac2->as_out_alt = alt;
|
|
|
|
if (alt)
|
|
ret = u_audio_start_capture(&uac2->g_audio);
|
|
else
|
|
u_audio_stop_capture(&uac2->g_audio);
|
|
} else if (intf == uac2->as_in_intf) {
|
|
uac2->as_in_alt = alt;
|
|
|
|
if (alt)
|
|
ret = u_audio_start_playback(&uac2->g_audio);
|
|
else
|
|
u_audio_stop_playback(&uac2->g_audio);
|
|
} else {
|
|
dev_err(dev, "%s:%d Error!\n", __func__, __LINE__);
|
|
return -EINVAL;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int
|
|
afunc_get_alt(struct usb_function *fn, unsigned intf)
|
|
{
|
|
struct f_uac2 *uac2 = func_to_uac2(fn);
|
|
struct g_audio *agdev = func_to_g_audio(fn);
|
|
|
|
if (intf == uac2->ac_intf)
|
|
return uac2->ac_alt;
|
|
else if (intf == uac2->as_out_intf)
|
|
return uac2->as_out_alt;
|
|
else if (intf == uac2->as_in_intf)
|
|
return uac2->as_in_alt;
|
|
else
|
|
dev_err(&agdev->gadget->dev,
|
|
"%s:%d Invalid Interface %d!\n",
|
|
__func__, __LINE__, intf);
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
static void
|
|
afunc_disable(struct usb_function *fn)
|
|
{
|
|
struct f_uac2 *uac2 = func_to_uac2(fn);
|
|
|
|
uac2->as_in_alt = 0;
|
|
uac2->as_out_alt = 0;
|
|
u_audio_stop_capture(&uac2->g_audio);
|
|
u_audio_stop_playback(&uac2->g_audio);
|
|
if (uac2->int_ep)
|
|
usb_ep_disable(uac2->int_ep);
|
|
}
|
|
|
|
static void
|
|
afunc_suspend(struct usb_function *fn)
|
|
{
|
|
struct f_uac2 *uac2 = func_to_uac2(fn);
|
|
|
|
u_audio_suspend(&uac2->g_audio);
|
|
}
|
|
|
|
static int
|
|
in_rq_cur(struct usb_function *fn, const struct usb_ctrlrequest *cr)
|
|
{
|
|
struct usb_request *req = fn->config->cdev->req;
|
|
struct g_audio *agdev = func_to_g_audio(fn);
|
|
struct f_uac2_opts *opts = g_audio_to_uac2_opts(agdev);
|
|
u16 w_length = le16_to_cpu(cr->wLength);
|
|
u16 w_index = le16_to_cpu(cr->wIndex);
|
|
u16 w_value = le16_to_cpu(cr->wValue);
|
|
u8 entity_id = (w_index >> 8) & 0xff;
|
|
u8 control_selector = w_value >> 8;
|
|
int value = -EOPNOTSUPP;
|
|
u32 p_srate, c_srate;
|
|
|
|
u_audio_get_playback_srate(agdev, &p_srate);
|
|
u_audio_get_capture_srate(agdev, &c_srate);
|
|
|
|
if ((entity_id == USB_IN_CLK_ID) || (entity_id == USB_OUT_CLK_ID)) {
|
|
if (control_selector == UAC2_CS_CONTROL_SAM_FREQ) {
|
|
struct cntrl_cur_lay3 c;
|
|
|
|
memset(&c, 0, sizeof(struct cntrl_cur_lay3));
|
|
|
|
if (entity_id == USB_IN_CLK_ID)
|
|
c.dCUR = cpu_to_le32(p_srate);
|
|
else if (entity_id == USB_OUT_CLK_ID)
|
|
c.dCUR = cpu_to_le32(c_srate);
|
|
|
|
value = min_t(unsigned int, w_length, sizeof(c));
|
|
memcpy(req->buf, &c, value);
|
|
} else if (control_selector == UAC2_CS_CONTROL_CLOCK_VALID) {
|
|
*(u8 *)req->buf = 1;
|
|
value = min_t(unsigned int, w_length, 1);
|
|
} else {
|
|
dev_err(&agdev->gadget->dev,
|
|
"%s:%d control_selector=%d TODO!\n",
|
|
__func__, __LINE__, control_selector);
|
|
}
|
|
} else if ((FUIN_EN(opts) && (entity_id == USB_IN_FU_ID)) ||
|
|
(FUOUT_EN(opts) && (entity_id == USB_OUT_FU_ID))) {
|
|
unsigned int is_playback = 0;
|
|
|
|
if (FUIN_EN(opts) && (entity_id == USB_IN_FU_ID))
|
|
is_playback = 1;
|
|
|
|
if (control_selector == UAC_FU_MUTE) {
|
|
unsigned int mute;
|
|
|
|
u_audio_get_mute(agdev, is_playback, &mute);
|
|
|
|
*(u8 *)req->buf = mute;
|
|
value = min_t(unsigned int, w_length, 1);
|
|
} else if (control_selector == UAC_FU_VOLUME) {
|
|
struct cntrl_cur_lay2 c;
|
|
s16 volume;
|
|
|
|
memset(&c, 0, sizeof(struct cntrl_cur_lay2));
|
|
|
|
u_audio_get_volume(agdev, is_playback, &volume);
|
|
c.wCUR = cpu_to_le16(volume);
|
|
|
|
value = min_t(unsigned int, w_length, sizeof(c));
|
|
memcpy(req->buf, &c, value);
|
|
} else {
|
|
dev_err(&agdev->gadget->dev,
|
|
"%s:%d control_selector=%d TODO!\n",
|
|
__func__, __LINE__, control_selector);
|
|
}
|
|
} else {
|
|
dev_err(&agdev->gadget->dev,
|
|
"%s:%d entity_id=%d control_selector=%d TODO!\n",
|
|
__func__, __LINE__, entity_id, control_selector);
|
|
}
|
|
|
|
return value;
|
|
}
|
|
|
|
static int
|
|
in_rq_range(struct usb_function *fn, const struct usb_ctrlrequest *cr)
|
|
{
|
|
struct usb_request *req = fn->config->cdev->req;
|
|
struct g_audio *agdev = func_to_g_audio(fn);
|
|
struct f_uac2_opts *opts = g_audio_to_uac2_opts(agdev);
|
|
u16 w_length = le16_to_cpu(cr->wLength);
|
|
u16 w_index = le16_to_cpu(cr->wIndex);
|
|
u16 w_value = le16_to_cpu(cr->wValue);
|
|
u8 entity_id = (w_index >> 8) & 0xff;
|
|
u8 control_selector = w_value >> 8;
|
|
int value = -EOPNOTSUPP;
|
|
|
|
if ((entity_id == USB_IN_CLK_ID) || (entity_id == USB_OUT_CLK_ID)) {
|
|
if (control_selector == UAC2_CS_CONTROL_SAM_FREQ) {
|
|
struct cntrl_ranges_lay3_srates rs;
|
|
int i;
|
|
int wNumSubRanges = 0;
|
|
int srate;
|
|
int *srates;
|
|
|
|
if (entity_id == USB_IN_CLK_ID)
|
|
srates = opts->p_srates;
|
|
else if (entity_id == USB_OUT_CLK_ID)
|
|
srates = opts->c_srates;
|
|
else
|
|
return -EOPNOTSUPP;
|
|
for (i = 0; i < UAC_MAX_RATES; i++) {
|
|
srate = srates[i];
|
|
if (srate == 0)
|
|
break;
|
|
|
|
rs.r[wNumSubRanges].dMIN = cpu_to_le32(srate);
|
|
rs.r[wNumSubRanges].dMAX = cpu_to_le32(srate);
|
|
rs.r[wNumSubRanges].dRES = 0;
|
|
wNumSubRanges++;
|
|
dev_dbg(&agdev->gadget->dev,
|
|
"%s(): clk %d: rate ID %d: %d\n",
|
|
__func__, entity_id, wNumSubRanges, srate);
|
|
}
|
|
rs.wNumSubRanges = cpu_to_le16(wNumSubRanges);
|
|
value = min_t(unsigned int, w_length, ranges_lay3_size(rs));
|
|
dev_dbg(&agdev->gadget->dev, "%s(): sending %d rates, size %d\n",
|
|
__func__, rs.wNumSubRanges, value);
|
|
memcpy(req->buf, &rs, value);
|
|
} else {
|
|
dev_err(&agdev->gadget->dev,
|
|
"%s:%d control_selector=%d TODO!\n",
|
|
__func__, __LINE__, control_selector);
|
|
}
|
|
} else if ((FUIN_EN(opts) && (entity_id == USB_IN_FU_ID)) ||
|
|
(FUOUT_EN(opts) && (entity_id == USB_OUT_FU_ID))) {
|
|
unsigned int is_playback = 0;
|
|
|
|
if (FUIN_EN(opts) && (entity_id == USB_IN_FU_ID))
|
|
is_playback = 1;
|
|
|
|
if (control_selector == UAC_FU_VOLUME) {
|
|
struct cntrl_range_lay2 r;
|
|
s16 max_db, min_db, res_db;
|
|
|
|
if (is_playback) {
|
|
max_db = opts->p_volume_max;
|
|
min_db = opts->p_volume_min;
|
|
res_db = opts->p_volume_res;
|
|
} else {
|
|
max_db = opts->c_volume_max;
|
|
min_db = opts->c_volume_min;
|
|
res_db = opts->c_volume_res;
|
|
}
|
|
|
|
r.wMAX = cpu_to_le16(max_db);
|
|
r.wMIN = cpu_to_le16(min_db);
|
|
r.wRES = cpu_to_le16(res_db);
|
|
r.wNumSubRanges = cpu_to_le16(1);
|
|
|
|
value = min_t(unsigned int, w_length, sizeof(r));
|
|
memcpy(req->buf, &r, value);
|
|
} else {
|
|
dev_err(&agdev->gadget->dev,
|
|
"%s:%d control_selector=%d TODO!\n",
|
|
__func__, __LINE__, control_selector);
|
|
}
|
|
} else {
|
|
dev_err(&agdev->gadget->dev,
|
|
"%s:%d entity_id=%d control_selector=%d TODO!\n",
|
|
__func__, __LINE__, entity_id, control_selector);
|
|
}
|
|
|
|
return value;
|
|
}
|
|
|
|
static int
|
|
ac_rq_in(struct usb_function *fn, const struct usb_ctrlrequest *cr)
|
|
{
|
|
if (cr->bRequest == UAC2_CS_CUR)
|
|
return in_rq_cur(fn, cr);
|
|
else if (cr->bRequest == UAC2_CS_RANGE)
|
|
return in_rq_range(fn, cr);
|
|
else
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static void uac2_cs_control_sam_freq(struct usb_ep *ep, struct usb_request *req)
|
|
{
|
|
struct usb_function *fn = ep->driver_data;
|
|
struct g_audio *agdev = func_to_g_audio(fn);
|
|
struct f_uac2 *uac2 = func_to_uac2(fn);
|
|
u32 val;
|
|
|
|
if (req->actual != 4)
|
|
return;
|
|
|
|
val = le32_to_cpu(*((__le32 *)req->buf));
|
|
dev_dbg(&agdev->gadget->dev, "%s val: %d.\n", __func__, val);
|
|
if (uac2->clock_id == USB_IN_CLK_ID) {
|
|
u_audio_set_playback_srate(agdev, val);
|
|
} else if (uac2->clock_id == USB_OUT_CLK_ID) {
|
|
u_audio_set_capture_srate(agdev, val);
|
|
}
|
|
}
|
|
|
|
static void
|
|
out_rq_cur_complete(struct usb_ep *ep, struct usb_request *req)
|
|
{
|
|
struct g_audio *agdev = req->context;
|
|
struct usb_composite_dev *cdev = agdev->func.config->cdev;
|
|
struct f_uac2_opts *opts = g_audio_to_uac2_opts(agdev);
|
|
struct f_uac2 *uac2 = func_to_uac2(&agdev->func);
|
|
struct usb_ctrlrequest *cr = &uac2->setup_cr;
|
|
u16 w_index = le16_to_cpu(cr->wIndex);
|
|
u16 w_value = le16_to_cpu(cr->wValue);
|
|
u8 entity_id = (w_index >> 8) & 0xff;
|
|
u8 control_selector = w_value >> 8;
|
|
|
|
if (req->status != 0) {
|
|
dev_dbg(&cdev->gadget->dev, "completion err %d\n", req->status);
|
|
return;
|
|
}
|
|
|
|
if ((FUIN_EN(opts) && (entity_id == USB_IN_FU_ID)) ||
|
|
(FUOUT_EN(opts) && (entity_id == USB_OUT_FU_ID))) {
|
|
unsigned int is_playback = 0;
|
|
|
|
if (FUIN_EN(opts) && (entity_id == USB_IN_FU_ID))
|
|
is_playback = 1;
|
|
|
|
if (control_selector == UAC_FU_MUTE) {
|
|
u8 mute = *(u8 *)req->buf;
|
|
|
|
u_audio_set_mute(agdev, is_playback, mute);
|
|
|
|
return;
|
|
} else if (control_selector == UAC_FU_VOLUME) {
|
|
struct cntrl_cur_lay2 *c = req->buf;
|
|
s16 volume;
|
|
|
|
volume = le16_to_cpu(c->wCUR);
|
|
u_audio_set_volume(agdev, is_playback, volume);
|
|
|
|
return;
|
|
} else {
|
|
dev_err(&agdev->gadget->dev,
|
|
"%s:%d control_selector=%d TODO!\n",
|
|
__func__, __LINE__, control_selector);
|
|
usb_ep_set_halt(ep);
|
|
}
|
|
}
|
|
}
|
|
|
|
static int
|
|
out_rq_cur(struct usb_function *fn, const struct usb_ctrlrequest *cr)
|
|
{
|
|
struct usb_composite_dev *cdev = fn->config->cdev;
|
|
struct usb_request *req = fn->config->cdev->req;
|
|
struct g_audio *agdev = func_to_g_audio(fn);
|
|
struct f_uac2_opts *opts = g_audio_to_uac2_opts(agdev);
|
|
struct f_uac2 *uac2 = func_to_uac2(fn);
|
|
u16 w_length = le16_to_cpu(cr->wLength);
|
|
u16 w_index = le16_to_cpu(cr->wIndex);
|
|
u16 w_value = le16_to_cpu(cr->wValue);
|
|
u8 entity_id = (w_index >> 8) & 0xff;
|
|
u8 control_selector = w_value >> 8;
|
|
u8 clock_id = w_index >> 8;
|
|
|
|
if ((entity_id == USB_IN_CLK_ID) || (entity_id == USB_OUT_CLK_ID)) {
|
|
if (control_selector == UAC2_CS_CONTROL_SAM_FREQ) {
|
|
dev_dbg(&agdev->gadget->dev,
|
|
"control_selector UAC2_CS_CONTROL_SAM_FREQ, clock: %d\n", clock_id);
|
|
cdev->gadget->ep0->driver_data = fn;
|
|
uac2->clock_id = clock_id;
|
|
req->complete = uac2_cs_control_sam_freq;
|
|
return w_length;
|
|
}
|
|
} else if ((FUIN_EN(opts) && (entity_id == USB_IN_FU_ID)) ||
|
|
(FUOUT_EN(opts) && (entity_id == USB_OUT_FU_ID))) {
|
|
memcpy(&uac2->setup_cr, cr, sizeof(*cr));
|
|
req->context = agdev;
|
|
req->complete = out_rq_cur_complete;
|
|
|
|
return w_length;
|
|
} else {
|
|
dev_err(&agdev->gadget->dev,
|
|
"%s:%d entity_id=%d control_selector=%d TODO!\n",
|
|
__func__, __LINE__, entity_id, control_selector);
|
|
}
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static int
|
|
setup_rq_inf(struct usb_function *fn, const struct usb_ctrlrequest *cr)
|
|
{
|
|
struct f_uac2 *uac2 = func_to_uac2(fn);
|
|
struct g_audio *agdev = func_to_g_audio(fn);
|
|
u16 w_index = le16_to_cpu(cr->wIndex);
|
|
u8 intf = w_index & 0xff;
|
|
|
|
if (intf != uac2->ac_intf) {
|
|
dev_err(&agdev->gadget->dev,
|
|
"%s:%d Error!\n", __func__, __LINE__);
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
if (cr->bRequestType & USB_DIR_IN)
|
|
return ac_rq_in(fn, cr);
|
|
else if (cr->bRequest == UAC2_CS_CUR)
|
|
return out_rq_cur(fn, cr);
|
|
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static int
|
|
afunc_setup(struct usb_function *fn, const struct usb_ctrlrequest *cr)
|
|
{
|
|
struct usb_composite_dev *cdev = fn->config->cdev;
|
|
struct g_audio *agdev = func_to_g_audio(fn);
|
|
struct usb_request *req = cdev->req;
|
|
u16 w_length = le16_to_cpu(cr->wLength);
|
|
int value = -EOPNOTSUPP;
|
|
|
|
/* Only Class specific requests are supposed to reach here */
|
|
if ((cr->bRequestType & USB_TYPE_MASK) != USB_TYPE_CLASS)
|
|
return -EOPNOTSUPP;
|
|
|
|
if ((cr->bRequestType & USB_RECIP_MASK) == USB_RECIP_INTERFACE)
|
|
value = setup_rq_inf(fn, cr);
|
|
else
|
|
dev_err(&agdev->gadget->dev, "%s:%d Error!\n",
|
|
__func__, __LINE__);
|
|
|
|
if (value >= 0) {
|
|
req->length = value;
|
|
req->zero = value < w_length;
|
|
value = usb_ep_queue(cdev->gadget->ep0, req, GFP_ATOMIC);
|
|
if (value < 0) {
|
|
dev_err(&agdev->gadget->dev,
|
|
"%s:%d Error!\n", __func__, __LINE__);
|
|
req->status = 0;
|
|
}
|
|
}
|
|
|
|
return value;
|
|
}
|
|
|
|
static inline struct f_uac2_opts *to_f_uac2_opts(struct config_item *item)
|
|
{
|
|
return container_of(to_config_group(item), struct f_uac2_opts,
|
|
func_inst.group);
|
|
}
|
|
|
|
static void f_uac2_attr_release(struct config_item *item)
|
|
{
|
|
struct f_uac2_opts *opts = to_f_uac2_opts(item);
|
|
|
|
usb_put_function_instance(&opts->func_inst);
|
|
}
|
|
|
|
static struct configfs_item_operations f_uac2_item_ops = {
|
|
.release = f_uac2_attr_release,
|
|
};
|
|
|
|
#define uac2_kstrtou8 kstrtou8
|
|
#define uac2_kstrtou32 kstrtou32
|
|
#define uac2_kstrtos16 kstrtos16
|
|
#define uac2_kstrtobool(s, base, res) kstrtobool((s), (res))
|
|
|
|
static const char *u8_fmt = "%u\n";
|
|
static const char *u32_fmt = "%u\n";
|
|
static const char *s16_fmt = "%hd\n";
|
|
static const char *bool_fmt = "%u\n";
|
|
|
|
#define UAC2_ATTRIBUTE(type, name) \
|
|
static ssize_t f_uac2_opts_##name##_show(struct config_item *item, \
|
|
char *page) \
|
|
{ \
|
|
struct f_uac2_opts *opts = to_f_uac2_opts(item); \
|
|
int result; \
|
|
\
|
|
mutex_lock(&opts->lock); \
|
|
result = sprintf(page, type##_fmt, opts->name); \
|
|
mutex_unlock(&opts->lock); \
|
|
\
|
|
return result; \
|
|
} \
|
|
\
|
|
static ssize_t f_uac2_opts_##name##_store(struct config_item *item, \
|
|
const char *page, size_t len) \
|
|
{ \
|
|
struct f_uac2_opts *opts = to_f_uac2_opts(item); \
|
|
int ret; \
|
|
type num; \
|
|
\
|
|
mutex_lock(&opts->lock); \
|
|
if (opts->refcnt) { \
|
|
ret = -EBUSY; \
|
|
goto end; \
|
|
} \
|
|
\
|
|
ret = uac2_kstrto##type(page, 0, &num); \
|
|
if (ret) \
|
|
goto end; \
|
|
\
|
|
opts->name = num; \
|
|
ret = len; \
|
|
\
|
|
end: \
|
|
mutex_unlock(&opts->lock); \
|
|
return ret; \
|
|
} \
|
|
\
|
|
CONFIGFS_ATTR(f_uac2_opts_, name)
|
|
|
|
#define UAC2_ATTRIBUTE_SYNC(name) \
|
|
static ssize_t f_uac2_opts_##name##_show(struct config_item *item, \
|
|
char *page) \
|
|
{ \
|
|
struct f_uac2_opts *opts = to_f_uac2_opts(item); \
|
|
int result; \
|
|
char *str; \
|
|
\
|
|
mutex_lock(&opts->lock); \
|
|
switch (opts->name) { \
|
|
case USB_ENDPOINT_SYNC_ASYNC: \
|
|
str = "async"; \
|
|
break; \
|
|
case USB_ENDPOINT_SYNC_ADAPTIVE: \
|
|
str = "adaptive"; \
|
|
break; \
|
|
default: \
|
|
str = "unknown"; \
|
|
break; \
|
|
} \
|
|
result = sprintf(page, "%s\n", str); \
|
|
mutex_unlock(&opts->lock); \
|
|
\
|
|
return result; \
|
|
} \
|
|
\
|
|
static ssize_t f_uac2_opts_##name##_store(struct config_item *item, \
|
|
const char *page, size_t len) \
|
|
{ \
|
|
struct f_uac2_opts *opts = to_f_uac2_opts(item); \
|
|
int ret = 0; \
|
|
\
|
|
mutex_lock(&opts->lock); \
|
|
if (opts->refcnt) { \
|
|
ret = -EBUSY; \
|
|
goto end; \
|
|
} \
|
|
\
|
|
if (!strncmp(page, "async", 5)) \
|
|
opts->name = USB_ENDPOINT_SYNC_ASYNC; \
|
|
else if (!strncmp(page, "adaptive", 8)) \
|
|
opts->name = USB_ENDPOINT_SYNC_ADAPTIVE; \
|
|
else { \
|
|
ret = -EINVAL; \
|
|
goto end; \
|
|
} \
|
|
\
|
|
ret = len; \
|
|
\
|
|
end: \
|
|
mutex_unlock(&opts->lock); \
|
|
return ret; \
|
|
} \
|
|
\
|
|
CONFIGFS_ATTR(f_uac2_opts_, name)
|
|
|
|
#define UAC2_RATE_ATTRIBUTE(name) \
|
|
static ssize_t f_uac2_opts_##name##_show(struct config_item *item, \
|
|
char *page) \
|
|
{ \
|
|
struct f_uac2_opts *opts = to_f_uac2_opts(item); \
|
|
int result = 0; \
|
|
int i; \
|
|
\
|
|
mutex_lock(&opts->lock); \
|
|
page[0] = '\0'; \
|
|
for (i = 0; i < UAC_MAX_RATES; i++) { \
|
|
if (opts->name##s[i] == 0) \
|
|
break; \
|
|
result += sprintf(page + strlen(page), "%u,", \
|
|
opts->name##s[i]); \
|
|
} \
|
|
if (strlen(page) > 0) \
|
|
page[strlen(page) - 1] = '\n'; \
|
|
mutex_unlock(&opts->lock); \
|
|
\
|
|
return result; \
|
|
} \
|
|
\
|
|
static ssize_t f_uac2_opts_##name##_store(struct config_item *item, \
|
|
const char *page, size_t len) \
|
|
{ \
|
|
struct f_uac2_opts *opts = to_f_uac2_opts(item); \
|
|
char *split_page = NULL; \
|
|
int ret = -EINVAL; \
|
|
char *token; \
|
|
u32 num; \
|
|
int i; \
|
|
\
|
|
mutex_lock(&opts->lock); \
|
|
if (opts->refcnt) { \
|
|
ret = -EBUSY; \
|
|
goto end; \
|
|
} \
|
|
\
|
|
i = 0; \
|
|
memset(opts->name##s, 0x00, sizeof(opts->name##s)); \
|
|
split_page = kstrdup(page, GFP_KERNEL); \
|
|
while ((token = strsep(&split_page, ",")) != NULL) { \
|
|
ret = kstrtou32(token, 0, &num); \
|
|
if (ret) \
|
|
goto end; \
|
|
\
|
|
opts->name##s[i++] = num; \
|
|
ret = len; \
|
|
}; \
|
|
\
|
|
end: \
|
|
kfree(split_page); \
|
|
mutex_unlock(&opts->lock); \
|
|
return ret; \
|
|
} \
|
|
\
|
|
CONFIGFS_ATTR(f_uac2_opts_, name)
|
|
|
|
#define UAC2_ATTRIBUTE_STRING(name) \
|
|
static ssize_t f_uac2_opts_##name##_show(struct config_item *item, \
|
|
char *page) \
|
|
{ \
|
|
struct f_uac2_opts *opts = to_f_uac2_opts(item); \
|
|
int result; \
|
|
\
|
|
mutex_lock(&opts->lock); \
|
|
result = snprintf(page, sizeof(opts->name), "%s", opts->name); \
|
|
mutex_unlock(&opts->lock); \
|
|
\
|
|
return result; \
|
|
} \
|
|
\
|
|
static ssize_t f_uac2_opts_##name##_store(struct config_item *item, \
|
|
const char *page, size_t len) \
|
|
{ \
|
|
struct f_uac2_opts *opts = to_f_uac2_opts(item); \
|
|
int ret = 0; \
|
|
\
|
|
mutex_lock(&opts->lock); \
|
|
if (opts->refcnt) { \
|
|
ret = -EBUSY; \
|
|
goto end; \
|
|
} \
|
|
\
|
|
ret = snprintf(opts->name, min(sizeof(opts->name), len), \
|
|
"%s", page); \
|
|
\
|
|
end: \
|
|
mutex_unlock(&opts->lock); \
|
|
return ret; \
|
|
} \
|
|
\
|
|
CONFIGFS_ATTR(f_uac2_opts_, name)
|
|
|
|
UAC2_ATTRIBUTE(u32, p_chmask);
|
|
UAC2_RATE_ATTRIBUTE(p_srate);
|
|
UAC2_ATTRIBUTE(u32, p_ssize);
|
|
UAC2_ATTRIBUTE(u8, p_hs_bint);
|
|
UAC2_ATTRIBUTE(u32, c_chmask);
|
|
UAC2_RATE_ATTRIBUTE(c_srate);
|
|
UAC2_ATTRIBUTE_SYNC(c_sync);
|
|
UAC2_ATTRIBUTE(u32, c_ssize);
|
|
UAC2_ATTRIBUTE(u8, c_hs_bint);
|
|
UAC2_ATTRIBUTE(u32, req_number);
|
|
|
|
UAC2_ATTRIBUTE(bool, p_mute_present);
|
|
UAC2_ATTRIBUTE(bool, p_volume_present);
|
|
UAC2_ATTRIBUTE(s16, p_volume_min);
|
|
UAC2_ATTRIBUTE(s16, p_volume_max);
|
|
UAC2_ATTRIBUTE(s16, p_volume_res);
|
|
|
|
UAC2_ATTRIBUTE(bool, c_mute_present);
|
|
UAC2_ATTRIBUTE(bool, c_volume_present);
|
|
UAC2_ATTRIBUTE(s16, c_volume_min);
|
|
UAC2_ATTRIBUTE(s16, c_volume_max);
|
|
UAC2_ATTRIBUTE(s16, c_volume_res);
|
|
UAC2_ATTRIBUTE(u32, fb_max);
|
|
UAC2_ATTRIBUTE_STRING(function_name);
|
|
|
|
static struct configfs_attribute *f_uac2_attrs[] = {
|
|
&f_uac2_opts_attr_p_chmask,
|
|
&f_uac2_opts_attr_p_srate,
|
|
&f_uac2_opts_attr_p_ssize,
|
|
&f_uac2_opts_attr_p_hs_bint,
|
|
&f_uac2_opts_attr_c_chmask,
|
|
&f_uac2_opts_attr_c_srate,
|
|
&f_uac2_opts_attr_c_ssize,
|
|
&f_uac2_opts_attr_c_hs_bint,
|
|
&f_uac2_opts_attr_c_sync,
|
|
&f_uac2_opts_attr_req_number,
|
|
&f_uac2_opts_attr_fb_max,
|
|
|
|
&f_uac2_opts_attr_p_mute_present,
|
|
&f_uac2_opts_attr_p_volume_present,
|
|
&f_uac2_opts_attr_p_volume_min,
|
|
&f_uac2_opts_attr_p_volume_max,
|
|
&f_uac2_opts_attr_p_volume_res,
|
|
|
|
&f_uac2_opts_attr_c_mute_present,
|
|
&f_uac2_opts_attr_c_volume_present,
|
|
&f_uac2_opts_attr_c_volume_min,
|
|
&f_uac2_opts_attr_c_volume_max,
|
|
&f_uac2_opts_attr_c_volume_res,
|
|
|
|
&f_uac2_opts_attr_function_name,
|
|
|
|
NULL,
|
|
};
|
|
|
|
static const struct config_item_type f_uac2_func_type = {
|
|
.ct_item_ops = &f_uac2_item_ops,
|
|
.ct_attrs = f_uac2_attrs,
|
|
.ct_owner = THIS_MODULE,
|
|
};
|
|
|
|
static void afunc_free_inst(struct usb_function_instance *f)
|
|
{
|
|
struct f_uac2_opts *opts;
|
|
|
|
opts = container_of(f, struct f_uac2_opts, func_inst);
|
|
kfree(opts);
|
|
}
|
|
|
|
static struct usb_function_instance *afunc_alloc_inst(void)
|
|
{
|
|
struct f_uac2_opts *opts;
|
|
|
|
opts = kzalloc(sizeof(*opts), GFP_KERNEL);
|
|
if (!opts)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
mutex_init(&opts->lock);
|
|
opts->func_inst.free_func_inst = afunc_free_inst;
|
|
|
|
config_group_init_type_name(&opts->func_inst.group, "",
|
|
&f_uac2_func_type);
|
|
|
|
opts->p_chmask = UAC2_DEF_PCHMASK;
|
|
opts->p_srates[0] = UAC2_DEF_PSRATE;
|
|
opts->p_ssize = UAC2_DEF_PSSIZE;
|
|
opts->p_hs_bint = UAC2_DEF_PHSBINT;
|
|
opts->c_chmask = UAC2_DEF_CCHMASK;
|
|
opts->c_srates[0] = UAC2_DEF_CSRATE;
|
|
opts->c_ssize = UAC2_DEF_CSSIZE;
|
|
opts->c_hs_bint = UAC2_DEF_CHSBINT;
|
|
opts->c_sync = UAC2_DEF_CSYNC;
|
|
|
|
opts->p_mute_present = UAC2_DEF_MUTE_PRESENT;
|
|
opts->p_volume_present = UAC2_DEF_VOLUME_PRESENT;
|
|
opts->p_volume_min = UAC2_DEF_MIN_DB;
|
|
opts->p_volume_max = UAC2_DEF_MAX_DB;
|
|
opts->p_volume_res = UAC2_DEF_RES_DB;
|
|
|
|
opts->c_mute_present = UAC2_DEF_MUTE_PRESENT;
|
|
opts->c_volume_present = UAC2_DEF_VOLUME_PRESENT;
|
|
opts->c_volume_min = UAC2_DEF_MIN_DB;
|
|
opts->c_volume_max = UAC2_DEF_MAX_DB;
|
|
opts->c_volume_res = UAC2_DEF_RES_DB;
|
|
|
|
opts->req_number = UAC2_DEF_REQ_NUM;
|
|
opts->fb_max = FBACK_FAST_MAX;
|
|
|
|
snprintf(opts->function_name, sizeof(opts->function_name), "Source/Sink");
|
|
|
|
return &opts->func_inst;
|
|
}
|
|
|
|
static void afunc_free(struct usb_function *f)
|
|
{
|
|
struct g_audio *agdev;
|
|
struct f_uac2_opts *opts;
|
|
|
|
agdev = func_to_g_audio(f);
|
|
opts = container_of(f->fi, struct f_uac2_opts, func_inst);
|
|
kfree(agdev);
|
|
mutex_lock(&opts->lock);
|
|
--opts->refcnt;
|
|
mutex_unlock(&opts->lock);
|
|
}
|
|
|
|
static void afunc_unbind(struct usb_configuration *c, struct usb_function *f)
|
|
{
|
|
struct g_audio *agdev = func_to_g_audio(f);
|
|
|
|
g_audio_cleanup(agdev);
|
|
usb_free_all_descriptors(f);
|
|
|
|
agdev->gadget = NULL;
|
|
|
|
kfree(out_feature_unit_desc);
|
|
out_feature_unit_desc = NULL;
|
|
kfree(in_feature_unit_desc);
|
|
in_feature_unit_desc = NULL;
|
|
}
|
|
|
|
static struct usb_function *afunc_alloc(struct usb_function_instance *fi)
|
|
{
|
|
struct f_uac2 *uac2;
|
|
struct f_uac2_opts *opts;
|
|
|
|
uac2 = kzalloc(sizeof(*uac2), GFP_KERNEL);
|
|
if (uac2 == NULL)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
opts = container_of(fi, struct f_uac2_opts, func_inst);
|
|
mutex_lock(&opts->lock);
|
|
++opts->refcnt;
|
|
mutex_unlock(&opts->lock);
|
|
|
|
uac2->g_audio.func.name = "uac2_func";
|
|
uac2->g_audio.func.bind = afunc_bind;
|
|
uac2->g_audio.func.unbind = afunc_unbind;
|
|
uac2->g_audio.func.set_alt = afunc_set_alt;
|
|
uac2->g_audio.func.get_alt = afunc_get_alt;
|
|
uac2->g_audio.func.disable = afunc_disable;
|
|
uac2->g_audio.func.suspend = afunc_suspend;
|
|
uac2->g_audio.func.setup = afunc_setup;
|
|
uac2->g_audio.func.free_func = afunc_free;
|
|
|
|
return &uac2->g_audio.func;
|
|
}
|
|
|
|
DECLARE_USB_FUNCTION_INIT(uac2, afunc_alloc_inst, afunc_alloc);
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_AUTHOR("Yadwinder Singh");
|
|
MODULE_AUTHOR("Jaswinder Singh");
|
|
MODULE_AUTHOR("Ruslan Bilovol");
|