lcd display subsystem

GoogleGroups
1

Hello,

I want to write a driver in userspace for the ETMV570G2DHU Touchdisplay in c++.

I have another question to the lcd controller / display subsystem:

I want to use the lcd_ signals. I understand that I have to write into the display subsystem registers.

I don’t know how I can write into the registers from the display subsystem from an userspace programm.
On my understanding pointers in a userspace programm point to the userspace Memory. Not into the kernelmemory.

I want to write a driver in userspace for the ETMV570G2DHU Touchdisplay in c++ on the BBW. I use ubuntu 13.04 as OS.

For this I should use the display subsystem* / lcd controller from the arm335x.

Can I access the registers from the display subsystem with simple pointers like: #define DSS_IRQSTATUS *0x4805 0040 ?

If not, is >> struct resource *request_region (0x4830E000, 0xFFF, “LCD_Controller”); << the right way?

Thank you for your help.

Markus