question for /dev/fb0

guojunqiang — Wed, 24 Apr 2019 08:40:35 GMT

Dears,

Could you please tell that whether the func cfb_imageblit(...) in file cfbimgblt.c used for ?

I am porting lcdc on IMX7D,I just want to know if function cfb_imageblit is needed when open /dev/fb0 to flush image in userspace test code.

Thank you.

Re: question for /dev/fb0

igorpadykov — Thu, 25 Apr 2019 01:00:17 GMT

Hi keil

what bsp used in the case and driver source. Just

for reference one can look at driver descriptions in attached Linux Manual

sect.6.3.4 ELCDIF Frame Buffer, sect.6.4.5 Electrophoretic Display Controller (EPDC) Interface

Linux L4.14.78_1.0.0 link
https://source.codeaurora.org/external/imx/linux-imx/tree/?h=imx_4.14.78_1.0.0_ga

Best regards
igor
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