From: "Andreas Färber" <afaerber@suse.de>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: linux-fbdev@vger.kernel.org,
linuxppc-dev <linuxppc-dev@lists.ozlabs.org>,
kvm-ppc@vger.kernel.org
Subject: Re: [PATCH 2/2] offb: Add palette hack for qemu "standard vga" framebuffer
Date: Thu, 15 Dec 2011 07:49:57 +0000 [thread overview]
Message-ID: <4EE9A6A5.2050600@suse.de> (raw)
In-Reply-To: <1323907109.21839.28.camel@pasglop>
Am 15.12.2011 00:58, schrieb Benjamin Herrenschmidt:
> We rename the mach64 hack to "simple" since that's also applicable
> to anything using VGA-style DAC IO ports (set to 8-bit DAC) and we
> use it for qemu vga.
>
> Note that this is keyed on a device-tree "compatible" property that
> is currently only set by an upcoming version of SLOF when using the
> qemu "pseries" platform. This is on purpose as other qemu ppc platforms
> using OpenBIOS aren't properly setting the DAC to 8-bit at the time of
> the writing of this patch.
>
> We can fix OpenBIOS later to do that and add the required property, in
> which case it will be matched by this change.
Just let me know what's needed for OpenBIOS.
Is this just for -vga std as opposed to the default cirrus?
Cheers,
Andreas
--
SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany
GF: Jeff Hawn, Jennifer Guild, Felix Imendörffer; HRB 16746 AG Nürnberg
WARNING: multiple messages have this Message-ID (diff)
From: "Andreas Färber" <afaerber@suse.de>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: linux-fbdev@vger.kernel.org,
linuxppc-dev <linuxppc-dev@lists.ozlabs.org>,
kvm-ppc@vger.kernel.org
Subject: Re: [PATCH 2/2] offb: Add palette hack for qemu "standard vga" framebuffer
Date: Thu, 15 Dec 2011 08:49:57 +0100 [thread overview]
Message-ID: <4EE9A6A5.2050600@suse.de> (raw)
In-Reply-To: <1323907109.21839.28.camel@pasglop>
Am 15.12.2011 00:58, schrieb Benjamin Herrenschmidt:
> We rename the mach64 hack to "simple" since that's also applicable
> to anything using VGA-style DAC IO ports (set to 8-bit DAC) and we
> use it for qemu vga.
>
> Note that this is keyed on a device-tree "compatible" property that
> is currently only set by an upcoming version of SLOF when using the
> qemu "pseries" platform. This is on purpose as other qemu ppc platforms
> using OpenBIOS aren't properly setting the DAC to 8-bit at the time of
> the writing of this patch.
>
> We can fix OpenBIOS later to do that and add the required property, in
> which case it will be matched by this change.
Just let me know what's needed for OpenBIOS.
Is this just for -vga std as opposed to the default cirrus?
Cheers,
Andreas
--
SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany
GF: Jeff Hawn, Jennifer Guild, Felix Imendörffer; HRB 16746 AG Nürnberg
next prev parent reply other threads:[~2011-12-15 7:49 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-14 23:58 [PATCH 2/2] offb: Add palette hack for qemu "standard vga" Benjamin Herrenschmidt
2011-12-14 23:58 ` [PATCH 2/2] offb: Add palette hack for qemu "standard vga" framebuffer Benjamin Herrenschmidt
2011-12-15 7:49 ` Andreas Färber [this message]
2011-12-15 7:49 ` Andreas Färber
2011-12-15 8:09 ` [PATCH 2/2] offb: Add palette hack for qemu "standard vga" Benjamin Herrenschmidt
2011-12-15 8:09 ` [PATCH 2/2] offb: Add palette hack for qemu "standard vga" framebuffer Benjamin Herrenschmidt
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