[alsa-devel] [PATCH v5 02/14] ASoC: SOF: Add Sound Open Firmware KControl support

[Takashi Iwai]

On Thu, 21 Mar 2019 17:10:04 +0100,
Pierre-Louis Bossart wrote:
> 
> From: Liam Girdwood <liam.r.girdwood at linux.intel.com>
> 
> SOF exposes regular ALSA Kcontrols that are defined by topology. This
> patch converts the Kcontrol IO to DSP IPC.
> 
> The current implementation is aligned with previous Intel solutions,
> but is not optimal and can be improved:
> a) for every get/put the host wakes up the DSP and generates an
> IPC. The kernel should cache the values and generate an IPC only when
> strictly necessary.
> b) the firmware can be implemented to only instantiate the pipelines
> and related control-related parts that are needed at a given time, and
> power-gate the relevant SRAM blocks.
> 
> The development tasks for these two improvements has started, once
> validated they willl be provided in an update.
                 will


thanks,

Takashi