diff options
| author | Vincent Palatin <vpalatin@chromium.org> | 2017-09-12 15:47:31 +0200 |
|---|---|---|
| committer | chrome-bot <chrome-bot@chromium.org> | 2017-09-22 10:18:50 -0700 |
| commit | 77f011206c87a7a3e8cd93d3635c6c4f0ea3e32d (patch) | |
| tree | 75d281c3355aa9c1918e29c31a63037d81768add /include/usb_descriptor.h | |
| parent | e3333972d5bcf110fd2c51de92097a546694d0a1 (diff) | |
| download | chrome-ec-77f011206c87a7a3e8cd93d3635c6c4f0ea3e32d.tar.gz | |
Add WebUSB descriptor support
The WebUSB specification defines a specific Platform Descriptor in the
Binary Object Store:
https://wicg.github.io/webusb/#webusb-platform-capability-descriptor
This descriptor provides a special 'Landing page' URL to the host
browser and associated privileges for it.
Bump the USB version for BOS descriptors to 2.1 to be compatible with
Chrome implementation.
Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
BUG=none
BRANCH=twinkie
TEST=manual: on Twinkie (chip/stm32) and HG proto2 (chip/g), enumerate
WebUSB descriptors with lsusb and connect to a WebUSB page in Chrome
R61+.
Change-Id: I7211ab554f4a6c156c1e8e79a3d9f0d6644217c6
Reviewed-on: https://chromium-review.googlesource.com/664813
Commit-Ready: Vincent Palatin <vpalatin@chromium.org>
Tested-by: Vincent Palatin <vpalatin@chromium.org>
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
Diffstat (limited to 'include/usb_descriptor.h')
| -rw-r--r-- | include/usb_descriptor.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/include/usb_descriptor.h b/include/usb_descriptor.h index 7f03b1883a..a0e9d843cc 100644 --- a/include/usb_descriptor.h +++ b/include/usb_descriptor.h @@ -86,6 +86,24 @@ struct usb_contid_caps_descriptor { #define USB_DC_DTYPE_BILLBOARD 0x0d /* RESERVED 0x00, 0xOe - 0xff */ +/* Platform descriptor */ +struct usb_platform_descriptor { + uint8_t bLength; + uint8_t bDescriptorType; /* USB_DT_DEVICE_CAPABILITY */ + uint8_t bDevCapabilityType; /* USB_DC_DTYPE_PLATFORM */ + uint8_t bReserved; /* SBZ */ + uint8_t PlatformCapUUID[16]; /* USB_PLAT_CAP_xxx */ + uint16_t bcdVersion; /* 0x0100 */ + uint8_t bVendorCode; + uint8_t iLandingPage; +} __packed; +#define USB_DT_PLATFORM_SIZE 24 + +/* Platform Capability UUIDs */ +#define USB_PLAT_CAP_WEBUSB /*{3408b638-09a9-47a0-8bfd-a0768815b665}*/ \ + {0x38, 0xB6, 0x08, 0x34, 0xA9, 0x09, 0xA0, 0x47, \ + 0x8B, 0xFD, 0xA0, 0x76, 0x88, 0x15, 0xB6, 0x65} + /* Qualifier Descriptor */ struct usb_qualifier_descriptor { uint8_t bLength; @@ -227,6 +245,35 @@ struct usb_endpoint_descriptor { #define USB_REQ_SET_INTERFACE 0x0B #define USB_REQ_SYNCH_FRAME 0x0C +/* WebUSB URL descriptors */ +#define WEBUSB_REQ_GET_URL 0x02 +#define USB_DT_WEBUSB_URL 0x03 + +#define USB_URL_SCHEME_HTTP 0x00 +#define USB_URL_SCHEME_HTTPS 0x01 +#define USB_URL_SCHEME_NONE 0xff + +/* + * URL descriptor helper. + * (similar to string descriptor but UTF-8 instead of UTF-16) + */ +#define USB_URL_DESC(scheme, str) \ + (const void *)&(const struct { \ + uint8_t _len; \ + uint8_t _type; \ + uint8_t _scheme; \ + char _data[sizeof(str)]; \ + }) { \ + /* Total size of the descriptor is : \ + * size of the UTF-8 text plus the len/type fields \ + * minus the string 0-termination \ + */ \ + sizeof(str) + 3 - 1, \ + USB_DT_WEBUSB_URL, \ + USB_URL_SCHEME_##scheme, \ + str \ + } + /* Setup Packet */ struct usb_setup_packet { uint8_t bmRequestType; @@ -294,5 +341,6 @@ extern const uint8_t usb_string_desc[]; /* USB string descriptor with the firmware version */ extern const void * const usb_fw_version; extern const struct bos_context bos_ctx; +extern const void *webusb_url; #endif /* __CROS_EC_USB_DESCRIPTOR_H */ |