From: Timur Tabi <timur@freescale.com>
To: Grant Likely <grant.likely@secretlab.ca>,
Timur Tabi <timur@freescale.com>, Jon Smirl <jonsmirl@gmail.com>,
linuxppc-dev@ozlabs.org, alsa-devel@alsa-project.org,
liam.girdwood@wolfsonmicro.com
Subject: Re: [PATCH v2 1/3] ALSA SoC: Add OpenFirmware helper for matching bus and codec drivers
Date: Mon, 14 Jul 2008 13:40:24 -0500 [thread overview]
Message-ID: <487B9D98.8010008@freescale.com> (raw)
In-Reply-To: <20080714183632.GI25448@sirena.org.uk>
Mark Brown wrote:
> Desktop Management Interface, a standard BIOS interface for getting
> system data on x86 class hardware. Of particular interest here is the
> fact that it contains various ID strings for things like motherboard and
> chassis - on Linux drivers can be automatically loaded based on these
> strings. See drivers/misc/thinkpad_acpi.c for an example of a driver
> that does this.
The only problem with this is that the OF probing code in the kernel binds
drivers to device tree nodes. So when a driver claims a node, no other driver
will be probed with it.
So we can't have generic nodes that classify the motherboard and just let
everyone get probed on it.
--
Timur Tabi
Linux kernel developer at Freescale
WARNING: multiple messages have this Message-ID (diff)
From: Timur Tabi <timur@freescale.com>
To: Grant Likely <grant.likely@secretlab.ca>,
Timur Tabi <timur@freescale.com>, Jon Smirl <jonsmirl@gmail.com>,
linuxppc-dev@ozlabs.org, alsa-devel@alsa-project.org,
liam.girdwood@wolfsonmicro.com
Subject: Re: [alsa-devel] [PATCH v2 1/3] ALSA SoC: Add OpenFirmware helper for matching bus and codec drivers
Date: Mon, 14 Jul 2008 13:40:24 -0500 [thread overview]
Message-ID: <487B9D98.8010008@freescale.com> (raw)
In-Reply-To: <20080714183632.GI25448@sirena.org.uk>
Mark Brown wrote:
> Desktop Management Interface, a standard BIOS interface for getting
> system data on x86 class hardware. Of particular interest here is the
> fact that it contains various ID strings for things like motherboard and
> chassis - on Linux drivers can be automatically loaded based on these
> strings. See drivers/misc/thinkpad_acpi.c for an example of a driver
> that does this.
The only problem with this is that the OF probing code in the kernel binds
drivers to device tree nodes. So when a driver claims a node, no other driver
will be probed with it.
So we can't have generic nodes that classify the motherboard and just let
everyone get probed on it.
--
Timur Tabi
Linux kernel developer at Freescale
next prev parent reply other threads:[~2008-07-14 18:40 UTC|newest]
Thread overview: 89+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-12 8:39 [PATCH v2 1/3] ALSA SoC: Add OpenFirmware helper for matching bus and codec drivers Grant Likely
2008-07-12 8:39 ` Grant Likely
2008-07-12 8:39 ` [PATCH v2 2/3] ALSA SoC: Add mpc5200-psc I2S driver Grant Likely
2008-07-14 12:10 ` Mark Brown
2008-07-14 12:10 ` [alsa-devel] " Mark Brown
2008-07-12 8:39 ` [PATCH v2 3/3] ALSA SoC: Add Texas Instruments TLV320AIC26 codec driver Grant Likely
2008-07-12 8:39 ` Grant Likely
2008-07-12 18:10 ` Mark Brown
2008-07-12 18:10 ` [alsa-devel] " Mark Brown
2008-07-12 18:14 ` Grant Likely
2008-07-12 18:14 ` [alsa-devel] " Grant Likely
2008-07-14 11:45 ` Mark Brown
2008-07-14 11:45 ` [alsa-devel] " Mark Brown
2008-07-18 6:29 ` Grant Likely
2008-07-18 6:29 ` [alsa-devel] " Grant Likely
2008-07-18 10:39 ` Mark Brown
2008-07-18 10:39 ` [alsa-devel] " Mark Brown
2008-07-15 7:57 ` dinesh
2008-07-15 7:57 ` [alsa-devel] " dinesh
2008-07-15 10:33 ` Mark Brown
2008-07-15 10:33 ` [alsa-devel] " Mark Brown
2008-07-15 12:38 ` dinesh
2008-07-15 12:38 ` [alsa-devel] " dinesh
2008-07-15 12:46 ` Mark Brown
2008-07-15 12:46 ` [alsa-devel] " Mark Brown
2008-07-16 9:05 ` WRITING AN SOC DRIVER WITHOUT DMA dinesh
2008-07-16 9:05 ` dinesh
2008-07-16 10:07 ` Nobin Mathew
2008-07-16 10:07 ` [alsa-devel] " Nobin Mathew
2008-07-16 10:13 ` dinesh
2008-07-16 10:13 ` [alsa-devel] " dinesh
2008-07-17 6:03 ` dinesh
2008-07-17 6:03 ` [alsa-devel] " dinesh
2008-07-17 10:56 ` Mark Brown
2008-07-17 10:56 ` [alsa-devel] " Mark Brown
2008-07-17 11:26 ` Nobin Mathew
2008-07-17 11:26 ` [alsa-devel] " Nobin Mathew
2008-07-17 12:05 ` Jon Smirl
2008-07-17 12:05 ` [alsa-devel] " Jon Smirl
2008-07-17 16:02 ` [PATCH v2 3/3] ALSA SoC: Add Texas Instruments TLV320AIC26 codec driver Timur Tabi
2008-07-14 13:49 ` [PATCH v2 1/3] ALSA SoC: Add OpenFirmware helper for matching bus and codec drivers Mark Brown
2008-07-14 13:49 ` [alsa-devel] " Mark Brown
2008-07-14 14:13 ` Jon Smirl
2008-07-14 14:13 ` [alsa-devel] " Jon Smirl
2008-07-14 15:05 ` Mark Brown
2008-07-14 15:05 ` [alsa-devel] " Mark Brown
2008-07-14 16:14 ` Timur Tabi
2008-07-14 16:14 ` [alsa-devel] " Timur Tabi
2008-07-14 16:27 ` Grant Likely
2008-07-14 16:27 ` [alsa-devel] " Grant Likely
2008-07-14 16:53 ` Mark Brown
2008-07-14 16:53 ` [alsa-devel] " Mark Brown
2008-07-14 17:21 ` Grant Likely
2008-07-14 17:21 ` [alsa-devel] " Grant Likely
2008-07-14 18:36 ` Mark Brown
2008-07-14 18:36 ` [alsa-devel] " Mark Brown
2008-07-14 18:40 ` Timur Tabi [this message]
2008-07-14 18:40 ` Timur Tabi
2008-07-14 18:49 ` Mark Brown
2008-07-14 18:49 ` [alsa-devel] " Mark Brown
2008-07-14 18:53 ` Timur Tabi
2008-07-14 18:53 ` [alsa-devel] " Timur Tabi
2008-07-14 22:28 ` Grant Likely
2008-07-14 22:28 ` [alsa-devel] " Grant Likely
2008-07-14 23:45 ` Jon Smirl
2008-07-14 23:45 ` [alsa-devel] " Jon Smirl
2008-07-15 10:13 ` Mark Brown
2008-07-15 10:13 ` [alsa-devel] " Mark Brown
2008-07-15 13:08 ` Jon Smirl
2008-07-15 13:08 ` [alsa-devel] " Jon Smirl
2008-07-15 14:04 ` Mark Brown
2008-07-15 14:04 ` [alsa-devel] " Mark Brown
2008-07-14 15:51 ` Timur Tabi
2008-07-14 15:51 ` [alsa-devel] " Timur Tabi
2008-07-14 17:06 ` Grant Likely
2008-07-14 17:06 ` [alsa-devel] " Grant Likely
2008-07-14 17:16 ` Mark Brown
2008-07-14 17:16 ` [alsa-devel] " Mark Brown
2008-07-14 17:22 ` Grant Likely
2008-07-14 17:22 ` [alsa-devel] " Grant Likely
2008-07-18 7:17 ` Grant Likely
2008-07-18 7:17 ` [alsa-devel] " Grant Likely
2008-07-18 10:00 ` Mark Brown
2008-07-18 10:00 ` [alsa-devel] " Mark Brown
2008-07-18 14:59 ` Timur Tabi
2008-07-18 14:59 ` [alsa-devel] " Timur Tabi
2008-07-14 14:16 ` Anton Vorontsov
2008-07-14 14:16 ` Anton Vorontsov
2008-07-14 17:11 ` Grant Likely
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