From mboxrd@z Thu Jan  1 00:00:00 1970
From: festevam@gmail.com (Fabio Estevam)
Date: Wed, 1 Dec 2010 13:40:17 -0200
Subject: [PATCH] imx: dma: remove SDMA_IS_MERGED
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To: linux-arm-kernel@lists.infradead.org
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Hi Sascha,

On Wed, Dec 1, 2010 at 9:14 AM, Sascha Hauer <s.hauer@pengutronix.de> wrote:
...
> It seems the reason for the crash is that firmware_class registers in
> fs_initcall whereas the sdma driver uses it at subsys_initcall time.
> Solution is to either use module_init in the sdma driver or
> subsys_initcall in drivers/base/firmware_class.c.
>
> When given a firmware it works, when no firmware is given the kernel
> locks for some time because it waits for the firmware to appear which
> never happens. We should probably use request_firmware_nowait in the
> sdma driver.
>
> I put together a branch with sdma sound working on the babbage and
> mx35-3ds boards using mx3_defconfig/mx51_defconfig from this branch.
> The branch works with and without firmware with the mentioned wait time
> when the firmware is not available.
>
> BTW I changed the SDMA firmware repository to name the i.MX51 firmware
> *to3.bin instead of to1, because that's what it actually is.
>
> Sound support is a story with many frameworks and a lot of board
> specifics involved, but I hope we manage to sort this out for i.MX soon.
> Sorry for the inconvenience.
>
> It would be great if someone steps forward and mainlines this sgtl5000
> codec driver, that's currently the main showstopper for sound support on
> the Freescale boards.

Thanks a lot for setting up this branch. I can confirm that audio
works on MX51 Babbage on this branch.

I will check internally if someone is willing to mainline sgtl5000.

Thanks,

Fabio Estevam