[alsa-devel] [PATCH] ASoC: rt5514: Revert Hotword Model control

[Mark Brown]

On Fri, Sep 15, 2017 at 01:59:09PM +0900, Takashi Sakamoto wrote:

> I note that ALSA hwdep interface for userspace includes
> 'SNDRV_HWDEP_IOCTL_DSP_LOAD' ioctl(2) command to load binary blob from
> userspace.

The problem I see with that is that these things are generally settings
that people might want to change dynamically at runtime so you really
want to be able to change these things via controls like everything else
about the configuration.  If they were just fixed and unchanging in a
system then request_firmware() would be a good mechanism that's a bit
more modern than the ioctl.
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