From: Russell King <rmk@arm.linux.org.uk>
To: James Simmons <jsimmons@infradead.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>,
Linux Fbdev development list
<linux-fbdev-devel@lists.sourceforge.net>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [BK PATCHS] fbdev updates.
Date: Fri, 18 Oct 2002 19:32:46 +0100 [thread overview]
Message-ID: <20021018193245.A15827@flint.arm.linux.org.uk> (raw)
In-Reply-To: <Pine.LNX.4.33.0210181018470.10832-100000@maxwell.earthlink.net>; from jsimmons@infradead.org on Fri, Oct 18, 2002 at 10:27:59AM -0700
On Fri, Oct 18, 2002 at 10:27:59AM -0700, James Simmons wrote:
> Yes the drivers should always have priority. The other stuff is there
> only if the drivers have no power management of any kind. I leave it up to
> the driver write to implement a fb_blank function that handles different
> cases.
The drivers don't have priority though. You call set_par, and then
wander off into the internals of fbgen.c to set can_soft_blank youself,
without giving the drivers any look-in to set that correctly.
> > There is also the argument about wanting soft blanking, but hardware power
> > saving.
>
> Hm. True unfortunely the fbdev layer lacks handling details like that. The
> console system is even worse. This is why a single flag like
> can_soft_blank can actually be a limitation.
Well, it needs to be fixed. We've lost functionality that was present in
2.4, and therefore I call it a bug.
--
Russell King (rmk@arm.linux.org.uk) The developer of ARM Linux
http://www.arm.linux.org.uk/personal/aboutme.html
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WARNING: multiple messages have this Message-ID (diff)
From: Russell King <rmk@arm.linux.org.uk>
To: James Simmons <jsimmons@infradead.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>,
Linux Fbdev development list
<linux-fbdev-devel@lists.sourceforge.net>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [BK PATCHS] fbdev updates.
Date: Fri, 18 Oct 2002 19:32:46 +0100 [thread overview]
Message-ID: <20021018193245.A15827@flint.arm.linux.org.uk> (raw)
In-Reply-To: <Pine.LNX.4.33.0210181018470.10832-100000@maxwell.earthlink.net>; from jsimmons@infradead.org on Fri, Oct 18, 2002 at 10:27:59AM -0700
On Fri, Oct 18, 2002 at 10:27:59AM -0700, James Simmons wrote:
> Yes the drivers should always have priority. The other stuff is there
> only if the drivers have no power management of any kind. I leave it up to
> the driver write to implement a fb_blank function that handles different
> cases.
The drivers don't have priority though. You call set_par, and then
wander off into the internals of fbgen.c to set can_soft_blank youself,
without giving the drivers any look-in to set that correctly.
> > There is also the argument about wanting soft blanking, but hardware power
> > saving.
>
> Hm. True unfortunely the fbdev layer lacks handling details like that. The
> console system is even worse. This is why a single flag like
> can_soft_blank can actually be a limitation.
Well, it needs to be fixed. We've lost functionality that was present in
2.4, and therefore I call it a bug.
--
Russell King (rmk@arm.linux.org.uk) The developer of ARM Linux
http://www.arm.linux.org.uk/personal/aboutme.html
next prev parent reply other threads:[~2002-10-18 18:33 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-10-13 20:33 [BK PATCHS] fbdev updates James Simmons
2002-10-14 10:10 ` Geert Uytterhoeven
2002-10-14 10:10 ` Geert Uytterhoeven
2002-10-14 16:39 ` James Simmons
2002-10-15 8:38 ` Geert Uytterhoeven
2002-10-15 8:38 ` Geert Uytterhoeven
2002-10-18 16:48 ` James Simmons
2002-10-18 16:48 ` James Simmons
2002-10-15 9:00 ` Russell King
2002-10-15 9:00 ` Russell King
2002-10-15 9:14 ` Geert Uytterhoeven
2002-10-15 9:14 ` Geert Uytterhoeven
2002-10-15 9:38 ` Russell King
2002-10-15 9:38 ` Russell King
2002-10-18 17:27 ` James Simmons
2002-10-18 17:27 ` James Simmons
2002-10-18 18:32 ` Russell King [this message]
2002-10-18 18:32 ` Russell King
2002-10-18 21:24 ` James Simmons
2002-10-18 21:24 ` [Linux-fbdev-devel] " James Simmons
2002-10-18 21:37 ` Russell King
2002-10-22 17:13 ` Geert Uytterhoeven
2002-10-22 17:13 ` [Linux-fbdev-devel] " Geert Uytterhoeven
2002-10-18 17:16 ` James Simmons
2002-10-18 17:16 ` James Simmons
2002-10-18 17:05 ` James Simmons
2002-10-18 17:05 ` James Simmons
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