From: James Simmons <jsimmons@infradead.org>
To: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: linux-fbdev@vger.kernel.org,
Seung-Woo Kim <sw0312.kim@samsung.com>,
dri-devel@lists.freedesktop.org, Inki Dae <inki.dae@samsung.com>,
Kyungmin Park <kyungmin.park@samsung.com>
Subject: Re: [PATCH] drm: exynos: Fix fb_videomode <-> drm_mode_modeinfo conversion
Date: Thu, 08 Mar 2012 16:57:21 +0000 [thread overview]
Message-ID: <alpine.LFD.2.02.1203081656160.1975@casper.infradead.org> (raw)
In-Reply-To: <1331206495-3853-1-git-send-email-laurent.pinchart@ideasonboard.com>
> The fb_videomode structure stores the front porch and back porch in the
> right_margin and left_margin fields respectively. right_margin should
> thus be computed with hsync_start - hdisplay, and left_margin with
> htotal - hsync_end. The same holds for the vertical direction.
>
> Active Front Sync Back
> Region Porch Porch
> <-------------------><----------------><-------------><---------------->
>
> //////////////////|
> ////////////////// |
> ////////////////// |.................. ..................
> _______________
>
> <------ xres -------><- right_margin -><- hsync_len -><- left_margin -->
>
> <---- hdisplay ----->
> <------------ hsync_start ------------>
> <--------------------- hsync_end -------------------->
> <--------------------------------- htotal ----------------------------->
>
> Fix the fb_videomode <-> drm_mode_modeinfo conversion functions
> accordingly.
>
Wow I see this has remegered. Some time last year I posted a patch that
had these routines in a generic format for people to use. I can repost
them again if people are interested.
next prev parent reply other threads:[~2012-03-08 16:57 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-08 11:34 [PATCH] drm: exynos: Fix fb_videomode <-> drm_mode_modeinfo conversion Laurent Pinchart
2012-03-08 13:05 ` Joonyoung Shim
2012-03-08 15:31 ` Laurent Pinchart
2012-03-08 15:36 ` Sascha Hauer
2012-03-08 16:57 ` James Simmons [this message]
2012-03-08 18:02 ` Corbin Simpson
2012-03-08 18:08 ` Laurent Pinchart
2012-03-09 0:56 ` Inki Dae
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