diff options
Diffstat (limited to 'sound/soc/omap/omap-mcpdm.c')
| -rw-r--r-- | sound/soc/omap/omap-mcpdm.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/sound/soc/omap/omap-mcpdm.c b/sound/soc/omap/omap-mcpdm.c index 11bd07cdce22..74d6e6fdcfd0 100644 --- a/sound/soc/omap/omap-mcpdm.c +++ b/sound/soc/omap/omap-mcpdm.c @@ -66,6 +66,9 @@ struct omap_mcpdm { /* McPDM needs to be restarted due to runtime reconfiguration */ bool restart; + /* pm state for suspend/resume handling */ + int pm_active_count; + struct snd_dmaengine_dai_dma_data dma_data[2]; }; @@ -422,12 +425,55 @@ static int omap_mcpdm_remove(struct snd_soc_dai *dai) return 0; } +#ifdef CONFIG_PM_SLEEP +static int omap_mcpdm_suspend(struct snd_soc_dai *dai) +{ + struct omap_mcpdm *mcpdm = snd_soc_dai_get_drvdata(dai); + + if (dai->active) { + omap_mcpdm_stop(mcpdm); + omap_mcpdm_close_streams(mcpdm); + } + + mcpdm->pm_active_count = 0; + while (pm_runtime_active(mcpdm->dev)) { + pm_runtime_put_sync(mcpdm->dev); + mcpdm->pm_active_count++; + } + + return 0; +} + +static int omap_mcpdm_resume(struct snd_soc_dai *dai) +{ + struct omap_mcpdm *mcpdm = snd_soc_dai_get_drvdata(dai); + + if (mcpdm->pm_active_count) { + while (mcpdm->pm_active_count--) + pm_runtime_get_sync(mcpdm->dev); + + if (dai->active) { + omap_mcpdm_open_streams(mcpdm); + omap_mcpdm_start(mcpdm); + } + } + + + return 0; +} +#else +#define omap_mcpdm_suspend NULL +#define omap_mcpdm_resume NULL +#endif + #define OMAP_MCPDM_RATES (SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000) #define OMAP_MCPDM_FORMATS SNDRV_PCM_FMTBIT_S32_LE static struct snd_soc_dai_driver omap_mcpdm_dai = { .probe = omap_mcpdm_probe, .remove = omap_mcpdm_remove, + .suspend = omap_mcpdm_suspend, + .resume = omap_mcpdm_resume, .probe_order = SND_SOC_COMP_ORDER_LATE, .remove_order = SND_SOC_COMP_ORDER_EARLY, .playback = { |