Hi,
These patches are a proposal to add gadget quirks in an immediate objective to
adapt f_fs when using DWC3 controller. But the quirk solution is generic and
can be used by other controllers to adapt gadget functions to their
non-standard restrictions.
This change is necessary to make Android's adbd service to work on Intel
Merrifield with f_fs instead of out-of-tree android gadget.
This new patch set was tested and validated in my environment:
- Intel Merrifield was able to use DWC3/f_fs with adbd service (it wasn't
before).
Changes from v6 to v7:
- Downgraded patch set version to v5 as per Felipe Balbi request, with some
changes:
- usb_ep_align_maxpacketsize() macro was change to usp_ep_align_maybe()
in order to check gadget->quirk_ep_out_aligned_size internally.
- updated patch 4/5 to use new macro usp_ep_align_maybe() and to fix
following compilation warning:
$ drivers/usb/gadget/f_fs.c: In function 'ffs_epfile_io':
$ drivers/usb/gadget/f_fs.c:857:124: warning: comparison of distinct pointer types lacks a cast [enabled by default]
---
David Cohen (3):
usb: gadget: move bitflags to the end of usb_gadget struct
usb: gadget: add quirk_ep_out_aligned_size field to struct usb_gadget
usb: dwc3: set gadget's quirk ep_out_align_size
Michal Nazarewicz (2):
usb: gadget: f_fs: remove loop from I/O function
usb: f_fs: check quirk to pad epout buf size when not aligned to
maxpacketsize
drivers/usb/dwc3/gadget.c | 6 +++
drivers/usb/gadget/f_fs.c | 115 +++++++++++++++++++++++----------------------
include/linux/usb/gadget.h | 39 +++++++++++----
3 files changed, 94 insertions(+), 66 deletions(-)
--
1.8.4.2
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