Implement runtime idle for CNL/APL devices using similar runtime PM idle logic as the Intel AZX HDA driver. If any HDA codecs are powered when runtime suspend request comes, return -EBUSY. By doing this, strict ordering is enforced between HDA codec and the HDA controller.
Signed-off-by: Kai Vehmanen kai.vehmanen@linux.intel.com Reviewed-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Reviewed-by: Takashi Iwai tiwai@suse.de --- sound/soc/sof/intel/apl.c | 1 + sound/soc/sof/intel/cnl.c | 1 + sound/soc/sof/intel/hda-dsp.c | 13 +++++++++++++ 3 files changed, 15 insertions(+)
diff --git a/sound/soc/sof/intel/apl.c b/sound/soc/sof/intel/apl.c index 43d1c9f31ec4c..fd2e26d797961 100644 --- a/sound/soc/sof/intel/apl.c +++ b/sound/soc/sof/intel/apl.c @@ -93,6 +93,7 @@ const struct snd_sof_dsp_ops sof_apl_ops = { .resume = hda_dsp_resume, .runtime_suspend = hda_dsp_runtime_suspend, .runtime_resume = hda_dsp_runtime_resume, + .runtime_idle = hda_dsp_runtime_idle, .set_hw_params_upon_resume = hda_dsp_set_hw_params_upon_resume, }; EXPORT_SYMBOL(sof_apl_ops); diff --git a/sound/soc/sof/intel/cnl.c b/sound/soc/sof/intel/cnl.c index 3840f81767fab..f2b392998f20d 100644 --- a/sound/soc/sof/intel/cnl.c +++ b/sound/soc/sof/intel/cnl.c @@ -251,6 +251,7 @@ const struct snd_sof_dsp_ops sof_cnl_ops = { .resume = hda_dsp_resume, .runtime_suspend = hda_dsp_runtime_suspend, .runtime_resume = hda_dsp_runtime_resume, + .runtime_idle = hda_dsp_runtime_idle, .set_hw_params_upon_resume = hda_dsp_set_hw_params_upon_resume, }; EXPORT_SYMBOL(sof_cnl_ops); diff --git a/sound/soc/sof/intel/hda-dsp.c b/sound/soc/sof/intel/hda-dsp.c index f2c5a12db930a..91de4785b6a3e 100644 --- a/sound/soc/sof/intel/hda-dsp.c +++ b/sound/soc/sof/intel/hda-dsp.c @@ -418,6 +418,19 @@ int hda_dsp_runtime_resume(struct snd_sof_dev *sdev) return hda_resume(sdev); }
+int hda_dsp_runtime_idle(struct snd_sof_dev *sdev) +{ + struct hdac_bus *hbus = sof_to_bus(sdev); + + if (hbus->codec_powered) { + dev_dbg(sdev->dev, "some codecs still powered (%08X), not idle\n", + (unsigned int)hbus->codec_powered); + return -EBUSY; + } + + return 0; +} + int hda_dsp_runtime_suspend(struct snd_sof_dev *sdev, int state) { /* stop hda controller and power dsp off */