On 10/31/2015 01:41 PM, Linus Walleij wrote:
On Thu, Jul 23, 2015 at 7:10 PM, Benjamin Tissoires
<benjamin.tissoires@xxxxxxxxx> wrote:
Dmitry, the Sony guys are currently working on upstreaming their work.
Their Xperia are using a Synaptics I2C touchscreen. They are able to
boot with an upstream kernel a lot of parts now, and they will
eventually need the upstream touch controller.
I have a Synaptics touchscreen thing since 2010 waiting in
drivers/staging/ste_rmi4.
Is there *anything* I can do to help further this?
It just seems like a massive body of code that doesn't get the
right love, Benjamin have you considered just merging this into
drivers/staging so it is simple for everyone to participate, or are there
infrastructural blockers?
Yours,
Linus Walleij
I have been continuing to work on the synaptics-rmi4 driver and was just
trying to figure out what the next step should be. I recently uploaded
my changes here https://github.com/aduggan/linux. I've held off on
posting more patches to the list since there are previous patches still
outstanding and I didn't want to inundate the list. But, at this point I
think I would appreciate someone volunteering to review it. I can post
some or all of it to the list if that's the best place for that to happen.
I've added support for newer devices (Function 12), connected it up to
hid-rmi to support HID touchpads, and reworked the SPI transport driver.
I'm able to get basic support for touch working for a variety of devices
RMI4 over I2C on a Nexus 4, RMI4 over SPI on a Nexus 9, and RMI4 over
HID on various touchpads. With Benjamin's SMBus work it won't take much
to also support SMBus touchpads.
I think the biggest blocker right now is just the fact that it is a
large body of code and there hasn't been enough continuous activity to
on it. So whenever a new patch is posted, reviewers have to go through
the time consuming process of relearning the code. But, there are a lot
of RMI4 devices out there without an upstreamed driver so I think it is
worth doing.
Andrew
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