From 8443f2d2b7782fef35fe579bf1eb612c24951486 Mon Sep 17 00:00:00 2001 From: Andrzej Pietrasiewicz Date: Tue, 15 Jul 2014 13:09:44 +0200 Subject: usb: gadget: Gadget directory cleanup - group legacy gadgets The drivers/usb/gadget directory contains many files. Files which are related can be distributed into separate directories. This patch moves the legacy gadgets (i.e. those not using configfs) into a separate directory. Signed-off-by: Andrzej Pietrasiewicz Signed-off-by: Felipe Balbi --- drivers/usb/gadget/legacy/audio.c | 180 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 180 insertions(+) create mode 100644 drivers/usb/gadget/legacy/audio.c (limited to 'drivers/usb/gadget/legacy/audio.c') diff --git a/drivers/usb/gadget/legacy/audio.c b/drivers/usb/gadget/legacy/audio.c new file mode 100644 index 000000000000..6eb695e5e43a --- /dev/null +++ b/drivers/usb/gadget/legacy/audio.c @@ -0,0 +1,180 @@ +/* + * audio.c -- Audio gadget driver + * + * Copyright (C) 2008 Bryan Wu + * Copyright (C) 2008 Analog Devices, Inc + * + * Enter bugs at http://blackfin.uclinux.org/ + * + * Licensed under the GPL-2 or later. + */ + +/* #define VERBOSE_DEBUG */ + +#include +#include +#include + +#include "gadget_chips.h" +#define DRIVER_DESC "Linux USB Audio Gadget" +#define DRIVER_VERSION "Feb 2, 2012" + +USB_GADGET_COMPOSITE_OPTIONS(); + +/* string IDs are assigned dynamically */ + +static struct usb_string strings_dev[] = { + [USB_GADGET_MANUFACTURER_IDX].s = "", + [USB_GADGET_PRODUCT_IDX].s = DRIVER_DESC, + [USB_GADGET_SERIAL_IDX].s = "", + { } /* end of list */ +}; + +static struct usb_gadget_strings stringtab_dev = { + .language = 0x0409, /* en-us */ + .strings = strings_dev, +}; + +static struct usb_gadget_strings *audio_strings[] = { + &stringtab_dev, + NULL, +}; + +#ifdef CONFIG_GADGET_UAC1 +#include "u_uac1.h" +#include "u_uac1.c" +#include "f_uac1.c" +#else +#include "f_uac2.c" +#endif + +/*-------------------------------------------------------------------------*/ + +/* DO NOT REUSE THESE IDs with a protocol-incompatible driver!! Ever!! + * Instead: allocate your own, using normal USB-IF procedures. + */ + +/* Thanks to Linux Foundation for donating this product ID. */ +#define AUDIO_VENDOR_NUM 0x1d6b /* Linux Foundation */ +#define AUDIO_PRODUCT_NUM 0x0101 /* Linux-USB Audio Gadget */ + +/*-------------------------------------------------------------------------*/ + +static struct usb_device_descriptor device_desc = { + .bLength = sizeof device_desc, + .bDescriptorType = USB_DT_DEVICE, + + .bcdUSB = __constant_cpu_to_le16(0x200), + +#ifdef CONFIG_GADGET_UAC1 + .bDeviceClass = USB_CLASS_PER_INTERFACE, + .bDeviceSubClass = 0, + .bDeviceProtocol = 0, +#else + .bDeviceClass = USB_CLASS_MISC, + .bDeviceSubClass = 0x02, + .bDeviceProtocol = 0x01, +#endif + /* .bMaxPacketSize0 = f(hardware) */ + + /* Vendor and product id defaults change according to what configs + * we support. (As does bNumConfigurations.) These values can + * also be overridden by module parameters. + */ + .idVendor = __constant_cpu_to_le16(AUDIO_VENDOR_NUM), + .idProduct = __constant_cpu_to_le16(AUDIO_PRODUCT_NUM), + /* .bcdDevice = f(hardware) */ + /* .iManufacturer = DYNAMIC */ + /* .iProduct = DYNAMIC */ + /* NO SERIAL NUMBER */ + .bNumConfigurations = 1, +}; + +static struct usb_otg_descriptor otg_descriptor = { + .bLength = sizeof otg_descriptor, + .bDescriptorType = USB_DT_OTG, + + /* REVISIT SRP-only hardware is possible, although + * it would not be called "OTG" ... + */ + .bmAttributes = USB_OTG_SRP | USB_OTG_HNP, +}; + +static const struct usb_descriptor_header *otg_desc[] = { + (struct usb_descriptor_header *) &otg_descriptor, + NULL, +}; + +/*-------------------------------------------------------------------------*/ + +static int __init audio_do_config(struct usb_configuration *c) +{ + /* FIXME alloc iConfiguration string, set it in c->strings */ + + if (gadget_is_otg(c->cdev->gadget)) { + c->descriptors = otg_desc; + c->bmAttributes |= USB_CONFIG_ATT_WAKEUP; + } + + audio_bind_config(c); + + return 0; +} + +static struct usb_configuration audio_config_driver = { + .label = DRIVER_DESC, + .bConfigurationValue = 1, + /* .iConfiguration = DYNAMIC */ + .bmAttributes = USB_CONFIG_ATT_SELFPOWER, +#ifndef CONFIG_GADGET_UAC1 + .unbind = uac2_unbind_config, +#endif +}; + +/*-------------------------------------------------------------------------*/ + +static int __init audio_bind(struct usb_composite_dev *cdev) +{ + int status; + + status = usb_string_ids_tab(cdev, strings_dev); + if (status < 0) + goto fail; + device_desc.iManufacturer = strings_dev[USB_GADGET_MANUFACTURER_IDX].id; + device_desc.iProduct = strings_dev[USB_GADGET_PRODUCT_IDX].id; + + status = usb_add_config(cdev, &audio_config_driver, audio_do_config); + if (status < 0) + goto fail; + usb_composite_overwrite_options(cdev, &coverwrite); + + INFO(cdev, "%s, version: %s\n", DRIVER_DESC, DRIVER_VERSION); + return 0; + +fail: + return status; +} + +static int __exit audio_unbind(struct usb_composite_dev *cdev) +{ +#ifdef CONFIG_GADGET_UAC1 + gaudio_cleanup(); +#endif + return 0; +} + +static __refdata struct usb_composite_driver audio_driver = { + .name = "g_audio", + .dev = &device_desc, + .strings = audio_strings, + .max_speed = USB_SPEED_HIGH, + .bind = audio_bind, + .unbind = __exit_p(audio_unbind), +}; + +module_usb_composite_driver(audio_driver); + +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_AUTHOR("Bryan Wu "); +MODULE_LICENSE("GPL"); + -- cgit v1.2.3