On 14 February 2015 at 22:02, David Lanzendörfer <[email protected]> wrote: > Hello > As you have maybe already heard in IRC I've taken a trip to Zhuhai and met the > engineers of Allwinner Technology (全志科技) in person. > We decided that we want as much cooperation between the sunxi project and > Allwinner as possible for upstreaming our device drivers. > I've taken the job of managing the communication between Allwinner and you > guys since there is some language barrier. > Some of the engineers only hardly understand English and most of them do not > understand English at all. > So if you have questions about documentation or request assistance with some > pieces of the code please email me and I will translate it into Chinese and > pass it on to the relevant engineer. > Also I will then pass on the translated answer back to you. >
Hello, I have on my todo list to look at making the http://linux-sunxi.org/GSL1680 touchscreen work on at least one of my tablets so that I can actually use the device for the intended purpose. Reading the publically available datasheet from Silead and comments in the available drivers I conclude that the 'firmware' blob which is extracted from the original firmware and then fed to a driver is in fact configuration of the Silead chip. This includes stuff like pin multiplexing for the capacitive lines so when the configuration is wrong or missing it's not surprising the chip does not produce any data. Some people claim they have this working with one driver or other but for me this always fails. I suspect there is some error in the current version of the driver since I get an error in chip communication rather than apparently working chip not producing any data. Allwinner has two drivers for this chip in the A23 SDK (one binary, one opensource) so perhaps they have some more information on this chip which would be useful in understanding the communication with the chip or the data sent to it? Thanks Michal -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
