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  1. 17 1月, 2014 1 次提交
    • B
      HID: logitech-dj: Fix USB 3.0 issue · 42c22dbf
      由 Benjamin Tisssoires 提交于 
      This fix (not very clean though) should fix the long time USB3
issue that was spotted last year. The rational has been given by
Hans de Goede:

 ----

I think the most likely cause for this is a firmware bug
in the unifying receiver, likely a race condition.

The most prominent difference between having a USB-2 device
plugged into an EHCI (so USB-2 only) port versus an XHCI
port will be inter packet timing. Specifically if you
send packets (ie hid reports) one at a time, then with
the EHCI controller their will be a significant pause
between them, where with XHCI they will be very close
together in time.

The reason for this is the difference in EHCI / XHCI
controller OS <-> driver interfaces.

For non periodic endpoints (control, bulk) the EHCI uses a
circular linked-list of commands in dma-memory, which it
follows to execute commands, if the list is empty, it
will go into an idle state and re-check periodically.

The XHCI uses a ring of commands per endpoint, and if the OS
places anything new on the ring it will do an ioport write,
waking up the XHCI making it send the new packet immediately.

For periodic transfers (isoc, interrupt) the delay between
packets when sending one at a time (rather then queuing them
up) will be even larger, because they need to be inserted into
the EHCI schedule 2 ms in the future so the OS driver can be
sure that the EHCI driver does not try to start executing the
time slot in question before the insertion has completed.

So a possible fix may be to insert a delay between packets
being send to the receiver.

 ----

I tested this on a buggy Haswell USB 3.0 motherboard, and I always
get the notification after adding the msleep.
Signed-off-by: NBenjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>
      42c22dbf
  3. 06 1月, 2014 1 次提交
  5. 21 12月, 2013 1 次提交
  7. 17 12月, 2013 1 次提交
  9. 16 12月, 2013 1 次提交
  11. 13 12月, 2013 1 次提交
  13. 03 12月, 2013 2 次提交
    • O
      HID: logitech-dj: add HIDRAW dependency in Kconfig · dcdc50e7
      由 Olivier Gay 提交于 
      hid-logitech-dj.c driver needs hidraw to work correctly. Without
hidraw, hid-logitech-dj.c fails during probe() and Logitech
Unifying devices HID reports aren't recognized.

The unifying receiver has 3 usb interfaces. When hid-logitech-dj driver is
loaded, interfaces 0 and 1 are discarded.

Interface 2 consists of a hid class interface with 3 collections, each of
which sports the 'vendor' usage, thus, there is no reason for hid_input to
claim any of them. On the other hand, hidraw has no issue in claiming the
collections, even if they are 'vendor'. As of today, hid-logitech-dj uses
hidraw api to send configuration/control reports to interface 2 of the
Unifying receiver.

Without the hid-logitech-dj driver, interfaces 0 and 1 are claimed by
hid-input, as they correspond to a keyboard and a mouse. But that is not
relevant to the discussion.

[jkosina@suse.cz: make the changelog more verbose, thanks to Nestor]
Signed-off-by: NOlivier Gay <ogay@logitech.com>
Signed-off-by: NNestor Lopez Casado <nlopezcasad@logitech.com>
Signed-off-by: NMathieu Meisser <mmeisser@logitech.com>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>
      dcdc50e7
    • V
      HID: add support for Logitech Dual Action gamepads · 56d0c8b7
      由 Vitaly Katraew 提交于 
      I have two Logitech Dual Action gamepads, both have same Vendor/Device id pair.
Newest gamepad (A) can switch between old mode (HID) and XBox gamepad emulation
mode. Old gamepad (B) can only work in HID mode.  In HID mode gamepad A sends
many EPIPE errors during initialization and was disconnected immediately after
connect  to usb port. It works fine in Win and Mac. After adding NOGET quirk in
driver, it was working properly.  Gamepad B works fine before and after
changes. I tested both gamepads with 3.8.0 and 3.11.6 kernels  with modified
driver. Follow patch can apply for current git kernel version. I can send pcap
log from usb bus with both gamepads or any other additional information if it
is needed
Signed-off-by: NVitaly Katraew <zawullon@gmail.com>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>
      56d0c8b7
  15. 02 12月, 2013 4 次提交
  17. 19 11月, 2013 1 次提交
  19. 15 11月, 2013 19 次提交
  21. 14 11月, 2013 8 次提交