From: Mika Westerberg <mika.westerberg@linux.intel.com>
To: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Bjorn Helgaas <bhelgaas@google.com>,
linux-kernel@vger.kernel.org, lenb@kernel.org,
rafael.j.wysocki@intel.com, broonie@opensource.wolfsonmicro.com,
grant.likely@secretlab.ca, linus.walleij@linaro.org,
khali@linux-fr.org, ben-linux@fluff.org, w.sang@pengutronix.de,
mathias.nyman@linux.intel.com, linux-acpi@vger.kernel.org
Subject: Re: [PATCH 2/3] spi / ACPI: add ACPI enumeration support
Date: Thu, 8 Nov 2012 22:20:42 +0200 [thread overview]
Message-ID: <20121108202042.GD16012@intel.com> (raw)
In-Reply-To: <30766811.i5oXHLoU7e@vostro.rjw.lan>
On Thu, Nov 08, 2012 at 01:46:24AM +0100, Rafael J. Wysocki wrote:
> On Wednesday, November 07, 2012 03:05:48 PM Mika Westerberg wrote:
> > On Wed, Nov 07, 2012 at 12:14:31PM +0100, Rafael J. Wysocki wrote:
> > > > So is the idea now that the ACPI core parses the resources and passes them
> > > > forward via struct acpi_device? I'm just wondering how to proceed with
> > > > these I2C and SPI enumeration patches.
> > >
> > > Well, we definitely don't want to duplicate what drivers/pnp/pnpacpi/rsparser.c
> > > does, so the idea is to move the code from there to the core in such a way that
> > > both the SPI/I2C patches and the PNP layer can use it.
> >
> > Ok.
> >
> > > I'll have some prototype code ready shortly, hopefully, and I'll post it
> > > in that form for comments (and so that you know what to expect).
> >
> > Sounds good. Thanks!
>
> There you go.
>
> I haven't even try to compile it, so most likely it breaks things left, right
> and in between, but I hope it shows the idea.
Thanks Rafael!
I'll try this tomorrow (we had problems with the HW today so I wasn't able
to do any testing).
I'll convert the SPI and I2C enumeration patches to use this method.
> It does a couple of things at the same time, so it should be split into a few
> simpler patches. First, it moves some code from drivers/pnp/pnpacpi/rsparser.c
> to a new file drivers/acpi/resource.c and makes pnpacpi use functions from
> there. Second, it changes acpi_platform.c to use those functions too.
> Finally, it adds a list of ACPI resources to struct acpi_device and
> makes acpi_platform.c use that list intead of evaluating _CRS and parsing its
> output with acpi_walk_resources().
>
> While changing acpi_platform.c I noticed that we had a bug in there, because
> GSIs were registered for the struct acpi_device object, although they should be
> registered for the struct platform_device one created by that code. I didn't
> try to fix that in the patch below, but it generally needs fixing.
Good point.
I wonder if the acpi_register_gsi() wants a device that is registered to
the Linux device framework? At least with the SPI and I2C we generally
don't have such until we call i2c_new_device() or spi_add_device() and they
are getting passed the IRQ number which should be translated to the Linux
IRQ before that...
next prev parent reply other threads:[~2012-11-08 20:17 UTC|newest]
Thread overview: 119+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-03 7:46 [PATCH 0/3] ACPI 5 support for GPIO, SPI and I2C Mika Westerberg
2012-11-03 7:46 ` [PATCH 1/3] gpio / ACPI: add ACPI support Mika Westerberg
2012-11-05 11:53 ` Linus Walleij
2012-11-05 12:14 ` Mathias Nyman
2012-11-05 12:46 ` Rafael J. Wysocki
2012-11-05 13:11 ` Linus Walleij
2012-11-05 13:19 ` Rafael J. Wysocki
2012-11-05 13:28 ` Linus Walleij
2012-11-05 13:50 ` Rafael J. Wysocki
2012-11-05 14:40 ` Linus Walleij
2012-11-06 9:39 ` Mika Westerberg
2012-11-06 10:15 ` Linus Walleij
2012-11-07 8:54 ` Mika Westerberg
2012-11-08 15:55 ` Grant Likely
2012-11-08 19:38 ` Mika Westerberg
2012-11-09 14:11 ` Mathias Nyman
2012-11-09 14:18 ` Grant Likely
2012-11-09 15:05 ` Mathias Nyman
2012-11-09 15:46 ` Grant Likely
2012-11-11 9:50 ` Mika Westerberg
2012-11-03 7:46 ` [PATCH 2/3] spi / ACPI: add ACPI enumeration support Mika Westerberg
2012-11-03 19:42 ` Bjorn Helgaas
2012-11-03 20:13 ` Mika Westerberg
2012-11-03 20:59 ` Rafael J. Wysocki
2012-11-05 10:31 ` Rafael J. Wysocki
2012-11-05 10:56 ` Mika Westerberg
2012-11-05 10:56 ` Mark Brown
2012-11-05 12:02 ` Mika Westerberg
2012-11-05 12:23 ` Jean Delvare
2012-11-05 12:59 ` Rafael J. Wysocki
2012-11-05 13:15 ` Mika Westerberg
2012-11-05 13:20 ` Linus Walleij
2012-11-05 13:43 ` Mika Westerberg
2012-11-05 14:03 ` Jean Delvare
2012-11-05 14:19 ` Rafael J. Wysocki
2012-11-05 14:53 ` Mika Westerberg
2012-11-05 15:19 ` Jean Delvare
2012-11-05 17:12 ` Mika Westerberg
2012-11-05 17:43 ` Bjorn Helgaas
2012-11-05 18:08 ` Mika Westerberg
2012-11-05 17:49 ` Jean Delvare
2012-11-05 20:42 ` Linus Walleij
2012-11-06 8:11 ` Mark Brown
2012-11-05 16:54 ` Bjorn Helgaas
2012-11-06 13:43 ` Rafael J. Wysocki
2012-11-06 20:35 ` Bjorn Helgaas
2012-11-06 22:28 ` Rafael J. Wysocki
2012-11-06 22:36 ` Rafael J. Wysocki
2012-11-07 9:58 ` Mika Westerberg
2012-11-07 11:14 ` Rafael J. Wysocki
2012-11-07 13:05 ` Mika Westerberg
2012-11-08 0:46 ` Rafael J. Wysocki
2012-11-08 20:20 ` Mika Westerberg [this message]
2012-11-08 20:54 ` Rafael J. Wysocki
2012-11-08 18:05 ` Grant Likely
2012-11-08 21:06 ` Rafael J. Wysocki
2012-11-08 21:34 ` Grant Likely
2012-11-05 10:54 ` Mark Brown
2012-11-03 20:39 ` Rafael J. Wysocki
2012-11-05 16:54 ` Bjorn Helgaas
2012-11-06 13:16 ` Rafael J. Wysocki
2012-11-06 20:53 ` Bjorn Helgaas
2012-11-06 22:18 ` Rafael J. Wysocki
2012-11-07 9:56 ` Mika Westerberg
2012-11-08 19:32 ` Bjorn Helgaas
2012-11-08 20:04 ` Mika Westerberg
2012-11-09 15:11 ` Bjorn Helgaas
2012-11-09 15:45 ` Grant Likely
2012-11-09 16:35 ` Bjorn Helgaas
2012-11-09 16:43 ` Grant Likely
2012-11-09 16:48 ` Mark Brown
2012-11-09 16:53 ` Bjorn Helgaas
2012-11-10 11:10 ` Rafael J. Wysocki
2012-11-10 11:16 ` Grant Likely
2012-11-10 17:14 ` Bjorn Helgaas
2012-11-10 19:40 ` Rafael J. Wysocki
2012-11-05 10:54 ` Mark Brown
2012-11-05 11:03 ` Mika Westerberg
2012-11-05 11:13 ` Mark Brown
2012-11-08 18:48 ` Grant Likely
2012-11-09 3:50 ` Mika Westerberg
2012-11-03 7:46 ` [PATCH 3/3] i2c " Mika Westerberg
2012-11-03 21:52 ` Jean Delvare
2012-11-04 7:23 ` Mika Westerberg
2012-11-04 8:50 ` Jean Delvare
2012-11-04 10:50 ` Mika Westerberg
2012-11-08 18:58 ` Grant Likely
2012-11-09 3:51 ` Mika Westerberg
2012-11-04 18:29 ` [PATCH 0/3] ACPI 5 support for GPIO, SPI and I2C Linus Walleij
2012-11-05 9:23 ` Mika Westerberg
2012-11-12 11:51 ` [PATCH 0/3] Centralized parsing of ACPI device resources (was: Re: [PATCH 0/3] ACPI 5 support for GPIO, SPI and I2C) Rafael J. Wysocki
2012-11-12 12:00 ` [PATCH 1/3] ACPI: Move device resources interpretation code from PNP to ACPI core Rafael J. Wysocki
2012-11-12 13:27 ` Mika Westerberg
2012-11-12 20:25 ` [Update][PATCH " Rafael J. Wysocki
2012-11-12 12:01 ` [PATCH 2/3] ACPI / platform: Use common ACPI device resource parsing routines Rafael J. Wysocki
2012-11-12 12:02 ` [PATCH 3/3] ACPI: Evaluate _CRS while creating device node objects Rafael J. Wysocki
2012-11-12 14:46 ` Mika Westerberg
2012-11-12 21:03 ` Rafael J. Wysocki
2012-11-13 7:12 ` Mika Westerberg
2012-11-13 12:06 ` [Replacement][PATCH 3/3] Rafael J. Wysocki
2012-11-13 14:16 ` Mika Westerberg
2012-11-13 15:15 ` Rafael J. Wysocki
2012-11-13 15:18 ` Mika Westerberg
2012-11-13 15:28 ` Rafael J. Wysocki
2012-11-13 15:37 ` Mika Westerberg
2012-11-13 16:34 ` [PATCH 3/3] ACPI: Evaluate _CRS while creating device node objects Moore, Robert
2012-11-13 20:44 ` Rafael J. Wysocki
2012-11-13 22:06 ` Moore, Robert
2012-11-13 22:56 ` Rafael J. Wysocki
2012-11-14 2:23 ` Moore, Robert
2012-11-14 9:18 ` Rafael J. Wysocki
2012-11-14 9:32 ` Rafael J. Wysocki
2012-11-14 14:20 ` Moore, Robert
2012-11-13 20:51 ` [PATCH 0/3 rev 2] Centralized parsing of ACPI device resources Rafael J. Wysocki
2012-11-13 20:55 ` [PATCH 1/3 rev 2] ACPI: Move device resources interpretation code from PNP to ACPI core Rafael J. Wysocki
2012-11-13 20:55 ` [PATCH 2/3 rev 2] ACPI / platform: Use common ACPI device resource parsing routines Rafael J. Wysocki
2012-11-13 20:56 ` [PATCH 3/3 rev 2] ACPI: Centralized processing of ACPI device resources Rafael J. Wysocki
2012-11-14 9:52 ` [PATCH 0/3 rev 2] Centralized parsing " Mika Westerberg
2012-11-14 10:08 ` Rafael J. Wysocki
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