kernel/linux.git/Documentation/usb, branch v6.1.168

usbip: add USBIP_URB_* URB transfer flags

2022-08-31T07:07:53+00:00

USBIP driver packs URB transfer flags in network packets that are exchanged between Server (usbip_host) and Client (vhci_hcd). URB_* flags are internal to kernel and could change. Where as USBIP URB flags exchanged in network packets are USBIP user API must not change. Add USBIP_URB* flags to make this an explicit API and change the client and server to map them. Details as follows: Client tx path (USBIP_CMD_SUBMIT): - Maps URB_* to USBIP_URB_* when it sends USBIP_CMD_SUBMIT packet. Server rx path (USBIP_CMD_SUBMIT): - Maps USBIP_URB_* to URB_* when it receives USBIP_CMD_SUBMIT packet. Flags aren't included in USBIP_CMD_UNLINK and USBIP_RET_SUBMIT packets and no special handling is needed for them in the following cases: - Server rx path (USBIP_CMD_UNLINK) - Client rx path & Server tx path (USBIP_RET_SUBMIT) Update protocol documentation to reflect the change. Suggested-by: Hongren Zenithal Zheng Suggested-by: Alan Stern Signed-off-by: Shuah Khan Link: https://lore.kernel.org/r/20220824002456.94605-1-skhan@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman

usb: gadget: f_mass_storage: forced_eject attribute

2022-07-14T14:06:42+00:00

It allows to reset prevent_medium_removal flag and "eject" the image. This can be useful to free the drive from a hunging host or if the host continues to use the drive even after unmounting (Linux does this). It's also a bit like using an unfolded paperclip on an optical drive. Previously, the undocumented method of sending SIGUSR1 to a special "file-storage" kernel thread could be used for these purposes, but when using multiple storages there was no way to distinguish one from the other, so we had to send a signal to everyone. Reviewed-by: Alan Stern Signed-off-by: Maxim Devaev Link: https://lore.kernel.org/r/20220711102956.19642-1-mdevaev@gmail.com Signed-off-by: Greg Kroah-Hartman

docs: usb: fix literal block marker in usbmon verification example

2022-06-09T15:50:03+00:00

The "Verify that bus sockets are present" example was not properly formatted due to a typo in the literal block marker. Signed-off-by: Justin Swartz Link: https://lore.kernel.org/r/20220604155431.23246-1-justin.swartz@risingedge.co.za Signed-off-by: Jonathan Corbet

usb: gadget: uvc: allow changing interface name via configfs

2022-04-21T16:14:34+00:00

Add a configfs entry, "function_name", to change the iInterface field for VideoControl. This name is used on host devices for user selection, useful when multiple cameras are present. The default will remain "UVC Camera". Signed-off-by: Dan Vacura Link: https://lore.kernel.org/r/20220401160447.5919-1-w36195@motorola.com Signed-off-by: Greg Kroah-Hartman

usb: gadget: f_uac2: Optionally determine bInterval for HS and SS

2022-01-31T13:26:18+00:00

Allow setting configfs params p_hs_bint/c_hs_bint to 0. If they are set to 0, determine the largest bInterval (4 to 1) for which the required bandwidth of the max samplerate fits the max allowed packet size. If the required bandwidth exceeds max bandwidth for single-packet mode (ep->mc=1), keep bInterval at 1. The FS speed is left at fixed bInterval=1. If for any speed the required bandwidth exceeds the max bandwidth corresponding to the selected/determined bInterval, print a warning. Signed-off-by: Pavel Hofman Link: https://lore.kernel.org/r/20220127114331.41367-4-pavel.hofman@ivitera.com Signed-off-by: Greg Kroah-Hartman

usb: gadget: f_uac2: Add HS/SS bInterval to configfs

2022-01-31T13:26:18+00:00

Allow configuring the HS/SS bInterval through configfs, via parameters p_hs_bint/c_hs_bint separately for playback/capture. The default param values are left at the original 4. Suggested-by: John Keeping Signed-off-by: Pavel Hofman Link: https://lore.kernel.org/r/20220127114331.41367-2-pavel.hofman@ivitera.com Signed-off-by: Greg Kroah-Hartman

usb: gadget: f_uac2: allow changing interface name via configfs

2022-01-26T13:10:44+00:00

This adds "function_name" configfs entry to change string value of the iInterface field. This field will be shown in Windows' audio settings panel, so being able to change it is useful. It will default to "Source/Sink" just as before. Signed-off-by: Yunhao Tian Link: https://lore.kernel.org/r/20220122112446.1415547-2-t123yh.xyz@gmail.com Signed-off-by: Greg Kroah-Hartman

usb: gadget: f_uac1: allow changing interface name via configfs

2022-01-26T13:10:40+00:00

This adds "function_name" configfs entry to change string value of the iInterface field. This field will be shown in Windows' audio settings panel, so being able to change it is useful. It will default to "AC Interface" just as before if unchanged. Signed-off-by: Yunhao Tian Link: https://lore.kernel.org/r/20220122112446.1415547-1-t123yh.xyz@gmail.com Signed-off-by: Greg Kroah-Hartman

usb: gadget: f_uac1: Support multiple sampling rates

2022-01-26T13:06:08+00:00

A list of sampling rates can be specified via configfs. All enabled sampling rates are sent to the USB host on request. When the host selects a sampling rate the internal active rate is updated. Config strings with single value stay compatible with the previous version. Multiple samplerates passed as configuration arrays to g_audio module when built for f_uac1. Signed-off-by: Julian Scheel Signed-off-by: Pavel Hofman Link: https://lore.kernel.org/r/20220121155308.48794-7-pavel.hofman@ivitera.com Signed-off-by: Greg Kroah-Hartman

usb: gadget: f_uac2: Support multiple sampling rates

2022-01-26T13:06:08+00:00

A list of sampling rates can be specified via configfs. All enabled sampling rates are sent to the USB host on request. When the host selects a sampling rate, the internal active rate (stored in struct f_uac2) is updated. The gadget no longer supports only one frequency. Therefore USB strings corresponding to the clock sources are renamed from specific Hz value to general names Input clock/Output clock. Config strings with single value stay compatible with the previous version. Multiple samplerates passed as configuration arrays to g_audio module when built for f_uac2. Signed-off-by: Julian Scheel Signed-off-by: Pavel Hofman Link: https://lore.kernel.org/r/20220121155308.48794-6-pavel.hofman@ivitera.com Signed-off-by: Greg Kroah-Hartman