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path: root/drivers/usb/gadget/audio.c
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Diffstat (limited to 'drivers/usb/gadget/audio.c')
-rw-r--r--drivers/usb/gadget/audio.c62
1 files changed, 14 insertions, 48 deletions
diff --git a/drivers/usb/gadget/audio.c b/drivers/usb/gadget/audio.c
index 98899244860e..231b0efe8fdc 100644
--- a/drivers/usb/gadget/audio.c
+++ b/drivers/usb/gadget/audio.c
@@ -12,35 +12,21 @@
/* #define VERBOSE_DEBUG */
#include <linux/kernel.h>
-#include <linux/utsname.h>
+#include <linux/module.h>
+#include <linux/usb/composite.h>
+#include "gadget_chips.h"
#define DRIVER_DESC "Linux USB Audio Gadget"
#define DRIVER_VERSION "Feb 2, 2012"
-/*-------------------------------------------------------------------------*/
-
-/*
- * Kbuild is not very cooperative with respect to linking separately
- * compiled library objects into one module. So for now we won't use
- * separate compilation ... ensuring init/exit sections work to shrink
- * the runtime footprint, and giving us at least some parts of what
- * a "gcc --combine ... part1.c part2.c part3.c ... " build would.
- */
-#include "composite.c"
-#include "usbstring.c"
-#include "config.c"
-#include "epautoconf.c"
+USB_GADGET_COMPOSITE_OPTIONS();
/* string IDs are assigned dynamically */
-#define STRING_MANUFACTURER_IDX 0
-#define STRING_PRODUCT_IDX 1
-
-static char manufacturer[50];
-
static struct usb_string strings_dev[] = {
- [STRING_MANUFACTURER_IDX].s = manufacturer,
- [STRING_PRODUCT_IDX].s = DRIVER_DESC,
+ [USB_GADGET_MANUFACTURER_IDX].s = "",
+ [USB_GADGET_PRODUCT_IDX].s = DRIVER_DESC,
+ [USB_GADGET_SERIAL_IDX].s = "",
{ } /* end of list */
};
@@ -149,39 +135,18 @@ static struct usb_configuration audio_config_driver = {
static int __init audio_bind(struct usb_composite_dev *cdev)
{
- int gcnum;
int status;
- gcnum = usb_gadget_controller_number(cdev->gadget);
- if (gcnum >= 0)
- device_desc.bcdDevice = cpu_to_le16(0x0300 | gcnum);
- else {
- ERROR(cdev, "controller '%s' not recognized; trying %s\n",
- cdev->gadget->name,
- audio_config_driver.label);
- device_desc.bcdDevice =
- __constant_cpu_to_le16(0x0300 | 0x0099);
- }
-
- /* device descriptor strings: manufacturer, product */
- snprintf(manufacturer, sizeof manufacturer, "%s %s with %s",
- init_utsname()->sysname, init_utsname()->release,
- cdev->gadget->name);
- status = usb_string_id(cdev);
- if (status < 0)
- goto fail;
- strings_dev[STRING_MANUFACTURER_IDX].id = status;
- device_desc.iManufacturer = status;
-
- status = usb_string_id(cdev);
+ status = usb_string_ids_tab(cdev, strings_dev);
if (status < 0)
goto fail;
- strings_dev[STRING_PRODUCT_IDX].id = status;
- device_desc.iProduct = status;
+ 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;
@@ -198,17 +163,18 @@ static int __exit audio_unbind(struct usb_composite_dev *cdev)
return 0;
}
-static struct usb_composite_driver audio_driver = {
+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),
};
static int __init init(void)
{
- return usb_composite_probe(&audio_driver, audio_bind);
+ return usb_composite_probe(&audio_driver);
}
module_init(init);