forked from Minki/linux
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: Stephen Warren <swarren@nvidia.com> Signed-off-by: Mark Brown <broonie@linaro.org>
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110147c8c5
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2f41a3f48a
@ -627,9 +627,30 @@ static int tegra30_ahub_remove(struct platform_device *pdev)
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return 0;
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}
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#ifdef CONFIG_PM_SLEEP
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static int tegra30_ahub_suspend(struct device *dev)
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{
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regcache_mark_dirty(ahub->regmap_ahub);
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regcache_mark_dirty(ahub->regmap_apbif);
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return 0;
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}
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static int tegra30_ahub_resume(struct device *dev)
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{
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int ret;
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ret = regcache_sync(ahub->regmap_ahub);
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ret |= regcache_sync(ahub->regmap_apbif);
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return ret;
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}
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#endif
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static const struct dev_pm_ops tegra30_ahub_pm_ops = {
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SET_RUNTIME_PM_OPS(tegra30_ahub_runtime_suspend,
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tegra30_ahub_runtime_resume, NULL)
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SET_SYSTEM_SLEEP_PM_OPS(tegra30_ahub_suspend, tegra30_ahub_resume)
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};
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static struct platform_driver tegra30_ahub_driver = {
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