[alsa-devel] PROBLEM: Asoc driver in 2.6.37.3 for AT91SAM9260 / TLV320AIC3X is broken

[Prchal Jiří]

Dne 11.3.2011 16:05, Jarkko Nikula napsal(a):
> On Fri, 11 Mar 2011 09:58:16 +0100
> Prchal Jiří <jiri.prchal at aksignal.cz> wrote:
> 
>> So I change file snd-soc-afeb9260.c, diff is attached, and Kconfig and Makefile too.
>> In version 2.6.35.11 it works good, but MMC/SD card doesn't work. (Something is broken it that driver just in this
>> version). I need to work sound and SD card.
>> I thing the problem is somewhere between "tlv320aic3x-codec 0-001a: probe" and "i2c-core: driver [tlv320aic3x-codec]
>> registered". In version 2.6.35.11 there is I2C communication, in 2.6.37 and higher nothing on I2C.
>> I also try to put newer alsa 1.0.24 to kernel 2.6.37.3 without any improvement.
> 
> Just to make sure, have you added I2C_BOARD_INFO("tlv320aic3x", 0x1a)
> to afeb9260_i2c_devices[] in arch/arm/mach-at91/board-afeb-9260v1.c?

Yes, I have it.
> 
>> Trying to put older alsa (but same version?) from kernel 2.6.35.11 to 2.6.37.3 produce soundcard, but when try to play
>> kernel oops, "cannot dereference null pointer" and freezes.
>>
>> I try many versions of
>> /* Digital audio interface glue - connects codec <--> CPU */
>> static struct snd_soc_dai_link afeb9260_dai = {
>> 	.name = "TLV320AIC3X", //AIC3X
>> 	.stream_name = "AIC3X",
>> 	.cpu_dai_name = "atmel-ssc-dai.0", //atmel-ssc-dai
>> 	.codec_dai_name = "tlv320aic3x-hifi", //aic3x, aic3x-hifi, tlv320aic3x
>> 	.platform_name = "atmel-pcm-audio", //atmel_pcm-audio
>> 	.codec_name = "tlv320aic3x-codec.0-001a", //tlv320aic3x-codec.0-0x1a
>> 	.init = afeb9260_aic3x_init,
>> 	.ops = &afeb9260_ops,
>> };
> 
> codec_name and codec_dai_name look ok here.
>