From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Antonino A. Daplas" Subject: Re: porting fb driver to 2, 6(fb_get_fix, fb_get_var) Date: Tue, 20 Jun 2006 22:25:38 +0800 Message-ID: <44980562.1010906@gmail.com> References: <20060620120150.43888.qmail@web37914.mail.mud.yahoo.com> Reply-To: linux-fbdev-devel@lists.sourceforge.net Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from sc8-sf-mx2-b.sourceforge.net ([10.3.1.92] helo=mail.sourceforge.net) by sc8-sf-list1-new.sourceforge.net with esmtp (Exim 4.43) id 1FshAu-0000uG-Jx for linux-fbdev-devel@lists.sourceforge.net; Tue, 20 Jun 2006 07:25:52 -0700 Received: from nz-out-0102.google.com ([64.233.162.195]) by mail.sourceforge.net with esmtp (Exim 4.44) id 1FshAt-0008EL-MB for linux-fbdev-devel@lists.sourceforge.net; Tue, 20 Jun 2006 07:25:52 -0700 Received: by nz-out-0102.google.com with SMTP id 13so1297114nzp for ; Tue, 20 Jun 2006 07:25:51 -0700 (PDT) In-Reply-To: <20060620120150.43888.qmail@web37914.mail.mud.yahoo.com> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-fbdev-devel-bounces@lists.sourceforge.net Errors-To: linux-fbdev-devel-bounces@lists.sourceforge.net To: linux-fbdev-devel@lists.sourceforge.net syed khader wrote: > > --- "Antonino A. Daplas" wrote: > >> syed khader wrote: >>> Hi, >>> I am trying to port one of our LCD display frame >>> buffer driver to 2.6 kernel. >>> The old 2.4 kernel had these functions defined >> in >>> fb_ops >>> fb_open: >>> fb_release: >> These 2 are still in 2.6, but they're optional. >> >>> fb_get_fix: >>> fb_get_var: >> Gone. > If they were gone do I have to just remove these > functions in the older version of the driver and > compile again. Will that suffice? That, plus you need to add the functions that are new in 2.6, as mentioned below. >>> fb_set_var: >> The above is split into: >> >> fb_check_var() - see if the requested var is >> compatible >> and if not, round up to the next >> legal value >> >> fb_set_par() - set the hardware based on the >> current >> var >>> fb_get_cmap: >> gone >> >>> fb_set_cmap: >> replaced by fb_setcolreg() >> >> >>> fb_ioctl: >> optional. >> >> Additional required ops for 2.6. >> >> fb_imageblit - expand monochrome to color and/or >> expand 8-bit pseudocolor to color >> >> Generic version for packed-pixel: cfb_imageblit >> >> fb_fillrect - fill rectangular area with solid color >> >> Generic version for packed-pixel: cfb_fillrect >> >> >> fb_copyarea - copy rectangular area >> >> Generic version for packed-pixel: cfb_copyarea >> >> >>> But the latest 2.6 fb_ops has removed these and >>> there is entirely new set of functions. >>> I tried to go to list archives but I could not >> find >>> information. >>> What functions in 2.6 fb_ops should to used to >>> implement this old 2.4 set of functions? >> Look at skeletonfb.c for comments. The simplest >> framebuffer driver you can start with is vfb.c >> >> >> Tony >> >> > Another question: What happens to "struct display" > being used in the older version. It's gone. It's now private to the framebuffer console which you need not worry about. Tony