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93c473948c
There is a custom (non-USB IF) extension to the USB standard: https://wicg.github.io/webusb/ This specification is published under the W3C Community Contributor Agreement, which in particular allows to implement the specification without any royalties. The specification allows USB gadgets to announce an URL to landing page and describes a Javascript interface for websites to interact with the USB gadget, if the user allows it. It is currently supported by Chromium-based browsers, such as Chrome, Edge and Opera on all major operating systems including Linux. This patch adds optional support for Linux-based USB gadgets wishing to expose such a landing page. During device enumeration, a host recognizes that the announced USB version is at least 2.01, which means, that there are BOS descriptors available. The device than announces WebUSB support using a platform device capability. This includes a vendor code under which the landing page URL can be retrieved using a vendor-specific request. Previously, the BOS descriptors would unconditionally include an LPM related descriptor, as BOS descriptors were only ever sent when the device was LPM capable. As this is no longer the case, this patch puts this descriptor behind a lpm_capable condition. Usage is modeled after os_desc descriptors: echo 1 > webusb/use echo "https://www.kernel.org" > webusb/landingPage lsusb will report the device with the following lines: Platform Device Capability: bLength 24 bDescriptorType 16 bDevCapabilityType 5 bReserved 0 PlatformCapabilityUUID {3408b638-09a9-47a0-8bfd-a0768815b665} WebUSB: bcdVersion 1.00 bVendorCode 0 iLandingPage 1 https://www.kernel.org Signed-off-by: Jó Ágila Bitsch <jgilab@gmail.com> Link: https://lore.kernel.org/r/Y8Crf8P2qAWuuk/F@jo-einhundert Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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| .. | ||
| audio-v2.h | ||
| audio-v3.h | ||
| audio.h | ||
| c67x00.h | ||
| ccid.h | ||
| cdc-wdm.h | ||
| cdc.h | ||
| cdc_ncm.h | ||
| ch9.h | ||
| chipidea.h | ||
| composite.h | ||
| ehci-dbgp.h | ||
| ehci_def.h | ||
| ehci_pdriver.h | ||
| ezusb.h | ||
| functionfs.h | ||
| g_hid.h | ||
| gadget.h | ||
| gadget_configfs.h | ||
| hcd.h | ||
| input.h | ||
| iowarrior.h | ||
| irda.h | ||
| isp116x.h | ||
| isp1301.h | ||
| isp1362.h | ||
| m66592.h | ||
| musb-ux500.h | ||
| musb.h | ||
| net2280.h | ||
| of.h | ||
| ohci_pdriver.h | ||
| onboard_hub.h | ||
| otg-fsm.h | ||
| otg.h | ||
| pd.h | ||
| pd_ado.h | ||
| pd_bdo.h | ||
| pd_ext_sdb.h | ||
| pd_vdo.h | ||
| phy.h | ||
| phy_companion.h | ||
| quirks.h | ||
| r8a66597.h | ||
| r8152.h | ||
| renesas_usbhs.h | ||
| rndis_host.h | ||
| role.h | ||
| serial.h | ||
| sl811.h | ||
| storage.h | ||
| tcpci.h | ||
| tcpm.h | ||
| tegra_usb_phy.h | ||
| typec.h | ||
| typec_altmode.h | ||
| typec_dp.h | ||
| typec_mux.h | ||
| typec_retimer.h | ||
| typec_tbt.h | ||
| uas.h | ||
| ulpi.h | ||
| usb338x.h | ||
| usb_phy_generic.h | ||
| usbnet.h | ||
| webusb.h | ||
| xhci-dbgp.h | ||