Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 2f41a3f4 authored by Stephen Warren's avatar Stephen Warren Committed by Mark Brown
Browse files

ASoC: tegra: implement suspend/resume for Tegra30 AHUB 



Add tegra30_ahub_{suspend,resume}. These use regcache functions to
restore all HW registers after power loss during a suspend/resume cycle.

Signed-off-by: default avatarStephen Warren <swarren@nvidia.com>
Signed-off-by: default avatarMark Brown <broonie@linaro.org>
parent 110147c8

sound/soc/tegra/tegra30_ahub.c

+21 −0
Original line number Diff line number Diff line
@@ -627,9 +627,30 @@ static int tegra30_ahub_remove(struct platform_device *pdev) 
	return 0;

}



#ifdef CONFIG_PM_SLEEP

static int tegra30_ahub_suspend(struct device *dev)

{

	regcache_mark_dirty(ahub->regmap_ahub);

	regcache_mark_dirty(ahub->regmap_apbif);



	return 0;

}



static int tegra30_ahub_resume(struct device *dev)

{

	int ret;



	ret = regcache_sync(ahub->regmap_ahub);

	ret |= regcache_sync(ahub->regmap_apbif);



	return ret;

}

#endif



static const struct dev_pm_ops tegra30_ahub_pm_ops = {

	SET_RUNTIME_PM_OPS(tegra30_ahub_runtime_suspend,

			   tegra30_ahub_runtime_resume, NULL)

	SET_SYSTEM_SLEEP_PM_OPS(tegra30_ahub_suspend, tegra30_ahub_resume)

};



static struct platform_driver tegra30_ahub_driver = {