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| author | Stephen Warren <swarren@nvidia.com> | 2013-06-03 19:37:41 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@linaro.org> | 2013-06-03 20:53:07 +0200 |
| commit | 2f41a3f48a1400234a4213851453dcb4274322f5 (patch) | |
| tree | d81fecd6f3a88e616911bad4ee05ff6c4effba27 | |
| parent | ASoC: tegra: always use clk_get() in utility code (diff) | |
| download | linux-2f41a3f48a1400234a4213851453dcb4274322f5.tar.xz linux-2f41a3f48a1400234a4213851453dcb4274322f5.zip | |
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>
| -rw-r--r-- | sound/soc/tegra/tegra30_ahub.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/sound/soc/tegra/tegra30_ahub.c b/sound/soc/tegra/tegra30_ahub.c index 23e592f453fa..0f4787c24e43 100644 --- a/sound/soc/tegra/tegra30_ahub.c +++ b/sound/soc/tegra/tegra30_ahub.c @@ -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 = { |