ASoC: SOF: Introduce fragment elapsed notification API
authorDaniel Baluta <daniel.baluta@nxp.com>
Mon, 4 Oct 2021 15:21:47 +0000 (18:21 +0300)
committerMark Brown <broonie@kernel.org>
Thu, 7 Oct 2021 15:57:57 +0000 (16:57 +0100)
commit858f7a5c45cacbf9965c4735330ee34baa0728f4
treed42a533c750ec36329da15d0ffe4395854c22153
parent40834190aa81270c52104fa9c82a1cae4bd1d359
ASoC: SOF: Introduce fragment elapsed notification API

This patch prepares the introduction of the compress API with SOF.

After each fragment is accepted by the DSP we need to inform
the userspace applications that they can send the next fragment.
This is done via snd_compr_fragment_elapsed.

Similar with the PCM case, in order to avoid sending an IPC before
the previous IPC is handled we need to schedule a delayed work to
call snd_compr_fragment_elapsed().

See snd_sof_pcm_period_elapsed.

To sum up this patch offers the following API to SOF code:
* snd_sof_compr_init_elapsed_work
* snd_sof_compr_fragment_elapsed

Note that implementation for compressed function is in a new file
selected via CONFIG_SND_SOC_SOF_COMPRESS invisible config option.
This option is automatically selected for platforms that support
the compress interface. For now only i.MX8 platforms support this.

For symmetry we introduce snd_sof_pcm_init_elapsed_work to setup
the work struct for PCM case.

Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Bud Liviu-Alexandru <budliviu@gmail.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Paul Olaru <paul.olaru@oss.nxp.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/20211004152147.1268978-5-daniel.baluta@oss.nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
sound/soc/sof/Kconfig
sound/soc/sof/Makefile
sound/soc/sof/compress.c [new file with mode: 0644]
sound/soc/sof/imx/Kconfig
sound/soc/sof/ipc.c
sound/soc/sof/pcm.c
sound/soc/sof/sof-audio.h
sound/soc/sof/topology.c