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2018-01-11Documentation: usb: fix typo in UVC gadgetfs config commandBin Liu1-1/+1
This seems to be a copy&paste error. With the fix the uvc gadget now can be created by following the instrucitons. Signed-off-by: Bin Liu <b-liu@ti.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-10-12Documentation: fix usb related doc refsTom Saeger1-1/+1
Update ref to usb proc_usb_info.txt. Signed-off-by: Tom Saeger <tom.saeger@oracle.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2017-06-19usb: gadget: add f_uac1 variant based on a new u_audio apiRuslan Bilovol1-0/+44
This patch adds a new function 'f_uac1' (f_uac1 with virtual "ALSA card") that uses recently created u_audio API. Comparing to legacy f_uac1 function implementation it doesn't require any real Audio codec to be present on the device. In f_uac1 audio streams are simply sinked to and sourced from a virtual ALSA sound card created using u_audio API. Legacy f_uac1 approach is to write audio samples directly to existing ALSA sound card f_uac1 approach is more generic/flexible one - create an ALSA sound card that represents USB Audio function and allows to be used by userspace application that may choose to do whatever it wants with the data received from the USB Host and choose to provide whatever it wants as audio data to the USB Host. f_uac1 also has capture support (gadget->host) thanks to easy implementation via u_audio. By default, capture interface has 48000kHz/2ch configuration, same as playback channel has. f_uac1 descriptors naming convention uses f_uac2 driver naming convention that makes it more common and meaningful. Comparing to f_uac1_legacy, the f_uac1 doesn't have volume/mute functionality. This is because the f_uac1 volume/mute feature unit was dummy implementation since that driver creation (2009) and never had any real volume control or mute functionality, so there is no any difference here. Since f_uac1 functionality, exposed interface to userspace (virtual ALSA card), input parameters are so different comparing to f_uac1_legacy, that there is no any reason to keep them in the same file/module, and separate function was created. g_audio can be built using one of existing UAC functions (f_uac1, f_uac1_legacy or f_uac2) Signed-off-by: Ruslan Bilovol <ruslan.bilovol@gmail.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-06-19usb: gadget: function: make current f_uac1 implementation legacyRuslan Bilovol1-4/+5
Before introducing new f_uac1 function (with virtual ALSA card) make current implementation legacy. This includes renaming of existing files, some variables, config options and documentation Signed-off-by: Ruslan Bilovol <ruslan.bilovol@gmail.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2017-01-24usb: gadget: uac2: add req_number as parameterPeter Chen1-0/+2
There are only two requests for uac2, it may not be enough at high loading system which usb interrupt handler can't be serviced on time, then the data will be lost since it is isoc transfer for audio. In this patch, we introduce a parameter for the number for usb request, and the user can override it if current number for request is not enough for his/her use case. Besides, update this parameter for legacy audio gadget and documentation. Signed-off-by: Peter Chen <peter.chen@nxp.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2015-12-16Documentation: usb: update usb-tools repository addressRobert Baldyga1-1/+1
It seems that gitorious repository is no longer accessible, so we replace it with address to active repository. Signed-off-by: Robert Baldyga <r.baldyga@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-12-15Documentation: usb: gadget-testing: add description for depth of queuePeter Chen1-0/+2
Add both bulk and iso depth of queue for sourcesink. Reviewed-by: Krzysztof Opasiak <k.opasiak@samsung.com> Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-07-31doc: usb: gadget-testing: using the updated testusb.cPeter Chen1-5/+2
testusb.c at http://www.linux-usb.org/usbtest/ is out of date, using the one at the kernel source folder. Cc: <stable@vger.kernel.org> Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-05-07usb: gadget: rndis: remove the limit of available rndis connectionsAndrzej Pietrasiewicz1-2/+0
RNDIS function has a limitation on the number of allowed instances. So far it has been RNDIS_MAX_CONFIGS, which happens to be one. In order to eliminate this kind of arbitrary limitation we should not preallocate a predefined (RNDIS_MAX_CONFIGS) array of struct rndis_params instances but instead allow allocating them on demand. This patch allocates struct rndis_params on demand in rndis_register(). Coversly, the structure is free()'d in rndis_deregister(). If CONFIG_USB_GADGET_DEBUG_FILES is set, the proc files are created which is the same behaviour as before, but the moment of creation is delayed until struct rndis_params is actually allocated. rnids_init() and rndis_exit() have nothing to do, so they are eliminated. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-04-27usb: Documentation: gadget-testing: fix parameter for capture channel maskPeter Chen1-1/+1
Fix the UAC2 parameter capture channel mask Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-03-10usb: gadget: printer: add configfs supportAndrzej Pietrasiewicz1-0/+47
Add support for configfs interface so that f_printer can be used as a component of usb gadgets composed with it. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-01-12Documentation: usb: UVC function testingAndrzej Pietrasiewicz1-0/+73
Summary of how to test UVC function of USB gadget. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-01-12Documentation: usb: UAC2 function testingAndrzej Pietrasiewicz1-0/+39
Summary of how to test UAC2 function of USB gadget. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-01-12Documentation: usb: UAC1 function testingAndrzej Pietrasiewicz1-0/+27
Summary of how to test UAC1 function of USB gadget. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-01-12Documentation: usb: SOURCESINK function testingAndrzej Pietrasiewicz1-0/+27
Summary of how to test SOURCESINK function of USB gadget. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-01-12Documentation: usb: SERIAL function testingAndrzej Pietrasiewicz1-0/+31
Summary of how to test SERIAL function of USB gadget. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-01-12Documentation: usb: RNDIS function testingAndrzej Pietrasiewicz1-0/+36
Summary of how to test RNDIS function of USB gadget. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-01-12Documentation: usb: PHONET function testingAndrzej Pietrasiewicz1-0/+64
Summary of how to test PHONET function of USB gadget. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-01-12Documentation: usb: OBEX function testingAndrzej Pietrasiewicz1-0/+29
Summary of how to test OBEX function of USB gadget. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-01-12Documentation: usb: NCM function testingAndrzej Pietrasiewicz1-0/+34
Summary of how to test NCM function of USB gadget. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-01-12Documentation: usb: MIDI function testingAndrzej Pietrasiewicz1-0/+84
Summary of how to test MIDI function of USB gadget. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-01-12Documentation: usb: MASS STORAGE function testingAndrzej Pietrasiewicz1-0/+54
Summary of how to test MASS STORAGE function of USB gadget. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-01-12Documentation: usb: LOOPBACK function testingAndrzej Pietrasiewicz1-0/+23
Summary of how to test LOOPBACK function of USB gadget. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-01-12Documentation: usb: HID function testingAndrzej Pietrasiewicz1-0/+47
Summary of how to test HID function of USB gadget. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-01-12Documentation: usb: FFS function testingAndrzej Pietrasiewicz1-0/+24
Summary of how to test FFS (FunctionFS) function of USB gadget. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-01-12Documentation: usb: EEM function testingAndrzej Pietrasiewicz1-0/+34
Summary of how to test EEM function of USB gadget. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-01-12Documentation: usb: ECM subset function testingAndrzej Pietrasiewicz1-0/+34
Summary of how to test ECM subset function of USB gadget. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-01-12Documentation: usb: ECM function testingAndrzej Pietrasiewicz1-0/+34
Summary of how to test ECM function of USB gadget. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
2015-01-12Documentation: usb: ACM function testingAndrzej Pietrasiewicz1-0/+34
The newly added file will be used to provide descriptions of how to test the functions of USB gadgets. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
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