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Diffstat (limited to 'Documentation/usb/gadget-testing.txt')
| -rw-r--r-- | Documentation/usb/gadget-testing.txt | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/Documentation/usb/gadget-testing.txt b/Documentation/usb/gadget-testing.txt index 9c39253..d101c42 100644 --- a/Documentation/usb/gadget-testing.txt +++ b/Documentation/usb/gadget-testing.txt @@ -21,6 +21,7 @@ provided by gadgets. 18. UVC function 19. PRINTER function 20. MTP function +21. PTP function 1. ACM function @@ -794,3 +795,27 @@ On the device: enable the gadget, and start the mtp userspace daemon. On the host: if configured correctly the media storage device should auto-mount itself, or use Linux mtp-tools package to browse/transfer the media content instead. + +21. PTP function +=============== + +The function is provided by usb_f_ptp.ko module. + +Function-specific configfs interface +------------------------------------ + +The function name to use when creating the function directory is "ptp". +The function directory is intentionally empty and has no attributes as such. + +This ptp function piggybacks on mtp function so make sure we have created mtp +function before we create ptp function directory. After creating the ptp +function directory, link ptp function with the gadget configuration by creating +symbolic link, enable the gadget by writing a suitable string to +usb_gadget/<gadget>/UDC and start the ptp userspace daemon. + +Testing the ptp function +------------------------ + +On the device: enable the gadget, and start the ptp userspace daemon. +On the host: if configured correctly the photo storage device should auto-mount +itself. |