Hello,
I am developing using the Zoom AM1808 EVM Development Kit and Davinci PSP SDK 03.20.00.12. I have a customer who needs a 20x4 character LCD. I'd like to test this out on the Zoom UI board, but it currently only supports a 24x2 display. I had the UI board modified to allow connecting an HD44780 compatible 20x4 display. The display powers up and I'm able to write up to 24 characters per line to the screen (the last four characters wrap around since it is only a 20 column display). Software seems to be limiting how many characters can be written to the display.
So far I've been unsuccessful in modifying kernel source to support the larger display. I've been concentrating on /drivers/staging/panel.c and /drivers/staging/parport-da8xx.c, but after some experimentation, I'm not sure what needs to be changed to support the larger display. Can anyone point me in the right direction where a software change is needed? Is it even possible to support the larger display?
Matt