diff options
Diffstat (limited to 'include/usb_bb.h')
| -rw-r--r-- | include/usb_bb.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/include/usb_bb.h b/include/usb_bb.h new file mode 100644 index 0000000000..56864a6a1d --- /dev/null +++ b/include/usb_bb.h @@ -0,0 +1,54 @@ +/* Copyright (c) 2014 The Chromium OS Authors. All rights reserved. + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + * + * USB billboard definitions. + */ + +#ifndef USB_BB_H +#define USB_BB_H + +/* per Billboard Device Class Spec Revision 1.0 */ + +/* device descriptor fields */ +#define USB_BB_BCDUSB_MIN 0x0201 /* v2.01 minimum */ +#define USB_BB_SUBCLASS 0x00 +#define USB_BB_PROTOCOL 0x00 +#define USB_BB_EP0_PACKET_SIZE 8 +#define USB_BB_CAP_DESC_TYPE 0x0d + + +#define USB_BB_CAPS_SVID_SIZE 4 +struct usb_bb_caps_svid_descriptor { + uint16_t wSVID; + uint8_t bAlternateMode; + uint8_t iAlternateModeString; +} __packed; + +#define USB_BB_CAPS_BASE_SIZE 44 +struct usb_bb_caps_base_descriptor { + uint8_t bLength; + uint8_t bDescriptorType; + uint8_t bDevCapabilityType; + uint8_t iAdditionalInfoURL; + uint8_t bNumberOfAlternateModes; + uint8_t bPreferredAlternateMode; + uint16_t VconnPower; + uint8_t bmConfigured[32]; /* 2b per SVID w/ 128 SVIDs allowed. */ + uint32_t bReserved; /* SBZ */ +} __packed; + + +#define USB_BB_VCONN_PWRON(x) (x << 15) +#define USB_BB_VCONN_PWR_1W 0 +#define USB_BB_VCONN_PWR_1p5W 1 +#define USB_BB_VCONN_PWR_2W 2 +#define USB_BB_VCONN_PWR_3W 3 +#define USB_BB_VCONN_PWR_4W 4 +#define USB_BB_VCONN_PWR_5W 5 +#define USB_BB_VCONN_PWR_6W 6 +/* Note, 7W (111b) is reserved */ + + +#endif /* USB_BB_H */ + |