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usb: sandbox: Add a USB emulation driver

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Add a simple USB keyboard driver for sandbox. It provides a function to
'load' it with input data, which it will then stream through to the normal
U-Boot input subsystem. When the input data is exhausted, the keyboard stops
providing data.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2015-11-08 23:48:06 -07:00
parent b70a3fea94
commit d8a26f0300
4 changed files with 264 additions and 0 deletions
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20
include/linux/usb/ch9.h
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@@ -229,6 +229,8 @@ struct usb_ctrlrequest {
#define USB_DT_PIPE_USAGE 0x24
/* From the USB 3.0 spec */
#define USB_DT_SS_ENDPOINT_COMP 0x30
/* From HID 1.11 spec */
#define USB_DT_HID_REPORT 0x22
/* Conventional codes for class-specific descriptors. The convention is
* defined in the USB "Common Class" Spec (3.11). Individual class specs
@@ -385,6 +387,24 @@ struct usb_generic_descriptor {
__u8 bDescriptorType;
};
struct __packed usb_class_hid_descriptor {
u8 bLength;
u8 bDescriptorType;
u16 bcdCDC;
u8 bCountryCode;
u8 bNumDescriptors; /* 0x01 */
u8 bDescriptorType0;
u16 wDescriptorLength0;
/* optional descriptors are not supported. */
};
struct __packed usb_class_report_descriptor {
u8 bLength; /* dummy */
u8 bDescriptorType;
u16 wLength;
u8 bData[0];
};
/*
* Endpoints
*/