From: Jeeja KP jeeja.kp@intel.com
We need card to be early suspended and late resumed, so use prepare and complete for card suspend and resume.
Signed-off-by: Jeeja KP jeeja.kp@intel.com Signed-off-by: Senthilnathan Veppur senthilnathanx.veppur@intel.com Signed-off-by: Vinod Koul vinod.koul@intel.com --- sound/soc/intel/boards/bxt_rt298.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+)
diff --git a/sound/soc/intel/boards/bxt_rt298.c b/sound/soc/intel/boards/bxt_rt298.c index 8b956500414b..2ef33b113bb5 100644 --- a/sound/soc/intel/boards/bxt_rt298.c +++ b/sound/soc/intel/boards/bxt_rt298.c @@ -454,10 +454,33 @@ static int broxton_audio_probe(struct platform_device *pdev) return devm_snd_soc_register_card(&pdev->dev, &broxton_rt298); }
+/* + * we want the card to be suspend first and then platform driver. This + * allows the DAPM to tear down pipelines on suspend and then platform shuts + * down the DSP. For this use .prepare for suspending card + * + * Similarly, use complete to let DSP download firmware first and then sync + * DAPM and restore pipelines to DSP + */ +static void broxton_rt298_complete(struct device *dev) +{ + snd_soc_resume(dev); +} + +static const struct dev_pm_ops broxton_pm_ops = { + .prepare = snd_soc_suspend, + .complete = broxton_rt298_complete, + .freeze = snd_soc_suspend, + .thaw = snd_soc_resume, + .poweroff = snd_soc_poweroff, + .restore = snd_soc_resume, +}; + static struct platform_driver broxton_audio = { .probe = broxton_audio_probe, .driver = { .name = "bxt_alc298s_i2s", + .pm = &broxton_pm_ops, }, }; module_platform_driver(broxton_audio)