Date:	Wed, 29 Jan 2014 13:42:43 -0500
From:	Benjamin Tissoires <benjamin.tissoires@...il.com>
To:	Andrew de los Reyes <adlr@...omium.org>
Cc:	Benjamin Tissoires <benjamin.tissoires@...hat.com>,
	Andrew de los Reyes <andrew-vger@...molabs.org>,
	Jiri Kosina <jkosina@...e.cz>,
	Nestor Lopez Casado <nlopezcasad@...itech.com>,
	Linux Input <linux-input@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 0/5] HID logitech DJ fixes and preps for enabling extended features

Hi Andrew,

On Wed, Jan 29, 2014 at 1:21 PM, Andrew de los Reyes <adlr@...omium.org> wrote:
> Just curious, what is the status of these patches?

Currently, Jiri had taken only the USB3 fix. The rest is still under
review/testing.

>
> Benjamin, should I rebase Chrome OS's Logitech patches on top of these
> and look at sending them upstream as well?

I would say wait a little bit more :)
I received the testing devices 2 weeks ago, and I managed to get the
Wireless Touchpad, T650, T651 and TK820 working with them.
I still don't know the fate regarding the touch mice.

I put a WIP on my github repo here (these are not the final patches though):
https://github.com/bentiss/hid-logitech-dj/tree/for-whot (branch for-whot).

Still, I need to rework on the patch 5/5 of this series, because it's
not working with bluetooth devices. I will also have to check if I can
use David's latest patches regarding the transport layer.

So until it has been accepted upstream by Jiri, do not consider this
better than what you have in ChromeOS, it may still change, and you
will have to redo the work again and again :)

Cheers,
Benjamin

>
> On Thu, Jan 9, 2014 at 1:22 PM, Benjamin Tissoires
> <benjamin.tissoires@...hat.com> wrote:
>> On 09/01/14 16:08, Andrew de los Reyes wrote:
>>> In general, I'm positive on the change to fix the USB3 issue (yay!),
>>> and for the others I'm happy it's going upstream. It seem to open up
>>> the possibility of user-space drivers, which is great, even though we
>>> don't need this on our team.
>>>
>>> One thing I want to double-check: on some devices (T651, at least),
>>> the raw data comes in not via HID++, but tacked onto the end of the
>>> normal mouse reports. Will a driver for this device be able to get all
>>> packets, not just HID++ ones? Sorry if this was clear and I missed it.
>>
>> Yeah, that is partly why I can not send the rest of the series right
>> now. Nestor already warned me about those funny devices, so I need to
>> double check how to implement HID++.
>>
>> On a technical point of view, a driver connected through the unifying
>> receiver currently only get the regular input reports, and this series
>> adds the HID++ reports to these ones. So yes, a device will receive all
>> reports dedicated to it.
>>
>> Cheers,
>> Benjamin
>>
>>>
>>> -andrew
>>>
>>> On Wed, Jan 8, 2014 at 2:18 PM, Benjamin Tissoires
>>> <benjamin.tissoires@...hat.com> wrote:
>>>> Hi Jiri,
>>>>
>>>> Well, this work is _not_ for 3.14 (except maybe patch 1), especially since it is
>>>> missing the biggest part where we enable the capabilities of Logitech devices.
>>>>
>>>> Long story short:
>>>> This work is based on the work I did back in Summer 2011. I worked at Logitech
>>>> for a few weeks to show up a demo of a driver for the Logitech Wireless Touchpad.
>>>> At that time, a first draft has been done, but due to a lack of resources, noone
>>>> upstreamed it.
>>>> Since then, the code marinated a little at Logitech and in the ChromeOS kernel
>>>> tree, but nobody tried to push it upstream. So here I am, trying to push this stuff
>>>> upstream.
>>>>
>>>> I can not send the full series right now because I am lacking most of the
>>>> testing hardware (I mean I only have the oldest Wireless Touchpad).
>>>> Hopefully, I should receive some other soon, and I'll be able to send the second
>>>> part then.
>>>>
>>>> Now, let me roughly explain the patches:
>>>> - patch 1 can be applied right now I think, but it's entirely up to you Jiri.
>>>>   This patch should fix the missing notifications with some USB 3.0 boards.
>>>> - patches 2 to 5 allows to forward in both direction the proprietary protocol
>>>>   used by Logitech (HID++ [1]) between the driver and the hardware.
>>>> - later patches will introduce a transport layer for HID++ and also a driver
>>>>   to support full multitouch on various Logitech touchpads.
>>>>
>>>> Nestor, Andrew, feel free to add your "Signed-off-by" whereever you want, I lost
>>>> a little bit the track of who added what.
>>>>
>>>> Cheers,
>>>> Benjamin
>>>>
>>>> [1] HID++: Documentation is provided at
>>>> https://drive.google.com/a/logitech.com/?tab=mo#folders/0BxbRzx7vEV7eWmgwazJ3NUFfQ28
>>>>
>>>> Benjamin Tisssoires (5):
>>>>   HID: logitech-dj: Fix USB 3.0 issue
>>>>   HID: core: do not scan reports if the group is already set
>>>>   HID: logitech-dj: rely on hid groups to separate receivers from dj
>>>>     devices
>>>>   HID: logitech-dj: forward incoming HID++ reports to the correct dj
>>>>     device
>>>>   HID: logitech-dj: add .request callback
>>>>
>>>>  drivers/hid/hid-core.c        |   3 +-
>>>>  drivers/hid/hid-logitech-dj.c | 161 +++++++++++++++++++++++++++++++++---------
>>>>  drivers/hid/hid-logitech-dj.h |  16 ++---
>>>>  include/linux/hid.h           |   1 +
>>>>  4 files changed, 136 insertions(+), 45 deletions(-)
>>>>
>>>> --
>>>> 1.8.4.2
>>>>
>>>> --
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>>
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