Hi, Sudip and Teddy, I have found the root cause of Logo problem: 1, enable hw_accel, staging driver cannot show logo. 2, disable hw_accel, staging driver can show logo. 3, both enable/disable hw_accel, my driver (1.0.8) can show logo. Deep in code: In staging driver, drivers/staging/sm750fb/sm750.c, lynxfb_ops_imageblit(), if image->depth != 1, it returns and do nothing. In my driver (1.0.8), if image->depth != 1, it fallback to cfb_imageblit(). I will send a patch to fix this. Huacai ------------------ Original ------------------ From: "Sudip Mukherjee"<sudipm.mukherjee@xxxxxxxxx>; Date: Fri, Apr 24, 2015 04:25 PM To: "陈华才"<chenhc@xxxxxxxxxx>; Cc: "Teddy Wang 王力强"<teddy.wang@xxxxxxxxxxxxxxxxx>; "Binbin Zhou"<zhoubb@xxxxxxxxxx>; "Greg Kroah-Hartman"<gregkh@xxxxxxxxxxxxxxxxxxx>; "devel"<devel@xxxxxxxxxxxxxxxxxxxx>; "Fuxin Zhang"<zhangfx@xxxxxxxxxx>; Subject: Re: 答复: [PATCH] staging: sm750:Fixthe Makefile option error On Fri, Apr 24, 2015 at 03:33:58PM +0800, 陈华才 wrote: > Hi, Sudip, > > Upstream driver still can't show logo, we are debugging. Hi Huacai, I checked with the upstream driver only. I checked with next-20150423 and it showed me the penguin logo on upper left hand corner of my screen when CONFIG_FB_SM750=y. only extra thing was that your patch of the Makefile was applied. maybe you can consider gifting me one your notepads so that I can also see the problem :) regards sudip > _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
