From: Gregor Riepl <onitake@gmail.com>
To: Robert Dolca <robert.dolca@gmail.com>
Cc: linux-input@vger.kernel.org
Subject: Re: [PATCH] Add generic driver for Silead tochscreens
Date: Mon, 13 Jul 2015 16:24:05 +0200 [thread overview]
Message-ID: <55A3CA05.5030302@gmail.com> (raw)
In-Reply-To: <CAFPB+YdNTUCRsQZZVCZQGyAdmOnSGs_fqOFxRm9u8rFPLDobCQ@mail.gmail.com>
> The firmware has to be calibrated by the vendor for each chip-panel
> combination. If you change the panel even if you keep the same chip it
> is very likely to need some calibration. This might be the reason why
> the finger ID is not working properly.
Thinking about the device parameters... Wouldn't it be possible to read them
from the Silead controller? According to comments in the firmware shipped with
the old Android platform driver by Basewin, all the configurable parameters
are contained in the firmware.[1]
I don't have a complete data sheet, but maybe we could just read back the
panel width and height and number of tracking points from a hardware register?
That would not solve the problem of transferring the correct, platform
specific firmware image to the device, however.
[1]
https://code.google.com/p/yuandao-n90-window-dual-core-2/source/browse/drivers/input/touchscreen/gslx680_ts.h
- the comments are in Chinese, a translation can be found here:
https://github.com/jabjoe/sunxi-gslx680/blob/master/firmware/firmware_information.txt
next prev parent reply other threads:[~2015-07-13 14:25 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-11 21:23 [PATCH] Add generic driver for Silead tochscreens Gregor Riepl
2015-07-12 6:31 ` Dmitry Torokhov
2015-07-13 9:59 ` Robert Dolca
2015-07-13 12:21 ` Gregor Riepl
2015-07-13 14:24 ` Gregor Riepl [this message]
2015-07-13 14:52 ` Robert Dolca
2015-07-13 15:18 ` Gregor Riepl
2015-07-16 13:59 ` Gregor Riepl
2015-07-20 21:19 ` Robert Dolca
2015-07-20 21:13 ` Robert Dolca
2015-07-21 13:21 ` Gregor Riepl
-- strict thread matches above, loose matches on Subject: below --
2015-07-10 15:11 Robert Dolca
2015-07-11 13:05 ` Paul Bolle
2015-07-20 6:51 ` Dmitry Torokhov
2015-07-20 12:05 ` Robert Dolca
2015-07-27 21:30 ` Dmitry Torokhov
2015-07-28 7:23 ` Robert Dolca
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