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usb: gadget: f_mass_storage: add configfs support

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From this commit on f_mass_storage is available through configfs.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Andrzej Pietrasiewicz
2013-10-09 10:06:05 +02:00
committed by Felipe Balbi
parent 864328ef8e
commit ef0aa4b92c
4 changed files with 419 additions and 0 deletions
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Documentation/ABI/testing/configfs-usb-gadget-mass-storage Normal file
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What: /config/usb-gadget/gadget/functions/mass_storage.name
Date: Oct 2013
KenelVersion: 3.13
Description:
The attributes:
stall - Set to permit function to halt bulk endpoints.
Disabled on some USB devices known not to work
correctly. You should set it to true.
num_buffers - Number of pipeline buffers. Valid numbers
are 2..4. Available only if
CONFIG_USB_GADGET_DEBUG_FILES is set.
What: /config/usb-gadget/gadget/functions/mass_storage.name/lun.name
Date: Oct 2013
KenelVersion: 3.13
Description:
The attributes:
file - The path to the backing file for the LUN.
Required if LUN is not marked as removable.
ro - Flag specifying access to the LUN shall be
read-only. This is implied if CD-ROM emulation
is enabled as well as when it was impossible
to open "filename" in R/W mode.
removable - Flag specifying that LUN shall be indicated as
being removable.
cdrom - Flag specifying that LUN shall be reported as
being a CD-ROM.
nofua - Flag specifying that FUA flag
in SCSI WRITE(10,12)