From 1927da9355670d04889ce57716bbc671fdca4135 Mon Sep 17 00:00:00 2001 From: Maruthi Srinivas Bayyavarapu Date: Fri, 8 Jan 2016 18:22:10 -0500 Subject: ASoC: AMD: add pm ops genpd will power off/on ACP to manage runtime ACP PM. ACP runtime PM hooks are added to get it deinitialized and initialized respectively, after it is powered off/on. When system goes to suspend when audio usecase is active, ACP will be powered off through genpd. When it resumes, ACP needs to be initialized and reconfigured. Signed-off-by: Maruthi Bayyavarapu Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher Signed-off-by: Mark Brown --- sound/soc/amd/acp-pcm-dma.c | 48 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) (limited to 'sound/soc/amd/acp-pcm-dma.c') diff --git a/sound/soc/amd/acp-pcm-dma.c b/sound/soc/amd/acp-pcm-dma.c index 0724d7847c07..c0819b5f8ba5 100644 --- a/sound/soc/amd/acp-pcm-dma.c +++ b/sound/soc/amd/acp-pcm-dma.c @@ -16,6 +16,7 @@ #include #include #include +#include #include @@ -885,6 +886,10 @@ static int acp_audio_probe(struct platform_device *pdev) return status; } + pm_runtime_set_autosuspend_delay(&pdev->dev, 10000); + pm_runtime_use_autosuspend(&pdev->dev); + pm_runtime_enable(&pdev->dev); + return status; } @@ -894,15 +899,58 @@ static int acp_audio_remove(struct platform_device *pdev) acp_deinit(adata->acp_mmio); snd_soc_unregister_platform(&pdev->dev); + pm_runtime_disable(&pdev->dev); return 0; } +static int acp_pcm_resume(struct device *dev) +{ + struct audio_drv_data *adata = dev_get_drvdata(dev); + + acp_init(adata->acp_mmio); + + if (adata->play_stream && adata->play_stream->runtime) + config_acp_dma(adata->acp_mmio, + adata->play_stream->runtime->private_data); + if (adata->capture_stream && adata->capture_stream->runtime) + config_acp_dma(adata->acp_mmio, + adata->capture_stream->runtime->private_data); + + acp_reg_write(1, adata->acp_mmio, mmACP_EXTERNAL_INTR_ENB); + return 0; +} + +static int acp_pcm_runtime_suspend(struct device *dev) +{ + struct audio_drv_data *adata = dev_get_drvdata(dev); + + acp_deinit(adata->acp_mmio); + acp_reg_write(0, adata->acp_mmio, mmACP_EXTERNAL_INTR_ENB); + return 0; +} + +static int acp_pcm_runtime_resume(struct device *dev) +{ + struct audio_drv_data *adata = dev_get_drvdata(dev); + + acp_init(adata->acp_mmio); + acp_reg_write(1, adata->acp_mmio, mmACP_EXTERNAL_INTR_ENB); + return 0; +} + +static const struct dev_pm_ops acp_pm_ops = { + .resume = acp_pcm_resume, + .runtime_suspend = acp_pcm_runtime_suspend, + .runtime_resume = acp_pcm_runtime_resume, +}; + static struct platform_driver acp_dma_driver = { .probe = acp_audio_probe, .remove = acp_audio_remove, .driver = { .name = "acp_audio_dma", + .pm = &acp_pm_ops, }, }; -- cgit v1.2.3-55-g7522