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/* Copyright 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 __CROS_EC_USB_BB_H
#define __CROS_EC_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 /* __CROS_EC_USB_BB_H */