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| author | Ranjani Sridharan <ranjani.sridharan@linux.intel.com> | 2021-09-27 15:05:14 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2021-10-01 20:48:28 +0100 |
| commit | 8b0014169254513bda914ba5d49a09458a919488 (patch) | |
| tree | b26ae4c89a7e597fcc9f1d77a872700abe08b4f3 /sound/soc/sof/sof-audio.h | |
| parent | 1b7d57d7178697ebdd9e6f21b4953ada168d2a61 (diff) | |
| download | linux-8b0014169254513bda914ba5d49a09458a919488.tar.gz | |
ASoC: SOF: Introduce widget use_count
Add a new field, use_count to struct snd_sof_widget to keep track
of the usage count for each widget. Since widgets can belong to
multiple pipelines, this field will ensure that the widget
is setup only when the first pipeline that needs it is started
and freed when the last pipeline that needs it is stopped. There is
no need to protect the widget use_count access as the core already
handles mutual exclusion at the PCM level.
Add a new helper sof_widget_free() to handle freeing the SOF
widgets and export the sof_widget_setup/free() functions.
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@linux.intel.com>
Link: https://lore.kernel.org/r/20210927120517.20505-10-peter.ujfalusi@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/sof/sof-audio.h')
| -rw-r--r-- | sound/soc/sof/sof-audio.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sound/soc/sof/sof-audio.h b/sound/soc/sof/sof-audio.h index f1f630028c21..6ac623137026 100644 --- a/sound/soc/sof/sof-audio.h +++ b/sound/soc/sof/sof-audio.h @@ -89,6 +89,7 @@ struct snd_sof_widget { int comp_id; int pipeline_id; int complete; + int use_count; /* use_count will be protected by the PCM mutex held by the core */ int core; int id; @@ -252,4 +253,7 @@ bool snd_sof_dsp_only_d0i3_compatible_stream_active(struct snd_sof_dev *sdev); int sof_machine_register(struct snd_sof_dev *sdev, void *pdata); void sof_machine_unregister(struct snd_sof_dev *sdev, void *pdata); +int sof_widget_setup(struct snd_sof_dev *sdev, struct snd_sof_widget *swidget); +int sof_widget_free(struct snd_sof_dev *sdev, struct snd_sof_widget *swidget); + #endif |