[alsa-devel] Intel SST and HP ElitePad 1000 G2

[Jorge Fernandez Monteagudo]

Hi,

I've regenerated from clean state the 4.3.0 but still no sound. Attached
dmesg, lsmod and .config used.

From dmesg I can see

[    4.357803] intel_sst_acpi 80860F28:00: No matching machine driver found

I think this kernel branch it's not well suited for the i915 graphic driver. I get
some kernel warning that I don't see in 4.2.5. The freeze I'm seeing it's
related to the graphic driver not the audio.

________________________________________
From: Pierre-Louis Bossart [pierre-louis.bossart at linux.intel.com]
Sent: Wednesday, November 25, 2015 3:40 PM
To: Jorge Fernandez Monteagudo; alsa-devel at alsa-project.org
Subject: Re: [alsa-devel] Intel SST and HP ElitePad 1000 G2

On 11/25/15 2:49 AM, Jorge Fernandez Monteagudo wrote:
> Hi,
>
> I've generated a new kernel, a 4.3.0, only with
>
> CONFIG_SND_SST_MFLD_PLATFORM=m
> CONFIG_SND_SST_IPC=m
> CONFIG_SND_SST_IPC_ACPI=m
> CONFIG_SND_SOC_INTEL_SST=m
> CONFIG_SND_SOC_INTEL_SST_ACPI=m
> CONFIG_SND_SOC_INTEL_BAYTRAIL=m
> CONFIG_SND_SOC_INTEL_BYT_MAX98090_MACH=m
> CONFIG_SND_SOC_INTEL_BYTCR_RT5640_MACH=m
> CONFIG_SND_SOC_I2C_AND_SPI=m
>
> and I've downloaded the firmware this repository (I don't know this git is the official one)
> from http://git.kernel.org/cgit/linux/kernel/git/firmware/linux-firmware.git
>
> But I have no audio. The firmware is loaded, I see this traces
>
> [    4.013712] baytrail-pcm-audio baytrail-pcm-audio: FW version: 04.05.13.a0
> [    4.013714] baytrail-pcm-audio baytrail-pcm-audio: Build type: a0
> [    4.013716] baytrail-pcm-audio baytrail-pcm-audio: Build date: Apr  2 2014 14:14:39
>
> but the mapping is not done. In the 4.2.5 kernel I see
>
> [    4.256939] byt-rt5640 byt-rt5640: rt5640-aif1 <-> baytrail-pcm-audio mapping ok

You are mixing two incompatible options that result in a broken
configuration. this message is for the 'old' machine driver. Use only

CONFIG_SND_SST_MFLD_PLATFORM=m
CONFIG_SND_SST_IPC=m
CONFIG_SND_SST_IPC_ACPI=m
CONFIG_SND_SOC_INTEL_BYTCR_RT5640_MACH=m

as I mentioned.

I tried to add a mutually exclusive choice but menuconfig complains
about circular dependencies, need to find a better way of handling these
two drivers so that they can't be enabled at the same time

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