From b3ee54075902e1e03f23f4f5bfd97e0a28a6f067 Mon Sep 17 00:00:00 2001 From: Sugar Zhang Date: Tue, 5 Jul 2016 10:48:06 +0800 Subject: [PATCH] FROMLIST: ASoC: rockchip: implement system suspend/resume for spdif restore hw registers after power loss during a suspend/resume cycle. Change-Id: I8078f5bdd35ff354a375337d641de479b59f14f6 Signed-off-by: Sugar Zhang (am from https://patchwork.kernel.org/patch/9213499/) --- sound/soc/rockchip/rockchip_spdif.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/sound/soc/rockchip/rockchip_spdif.c b/sound/soc/rockchip/rockchip_spdif.c index c589f6f03e70..2329c8a60cbf 100644 --- a/sound/soc/rockchip/rockchip_spdif.c +++ b/sound/soc/rockchip/rockchip_spdif.c @@ -392,9 +392,35 @@ static int rk_spdif_remove(struct platform_device *pdev) return 0; } +#ifdef CONFIG_PM_SLEEP +static int rockchip_spdif_suspend(struct device *dev) +{ + struct rk_spdif_dev *spdif = dev_get_drvdata(dev); + + regcache_mark_dirty(spdif->regmap); + + return 0; +} + +static int rockchip_spdif_resume(struct device *dev) +{ + struct rk_spdif_dev *spdif = dev_get_drvdata(dev); + int ret; + + ret = pm_runtime_get_sync(dev); + if (ret < 0) + return ret; + ret = regcache_sync(spdif->regmap); + pm_runtime_put(dev); + + return ret; +} +#endif + static const struct dev_pm_ops rk_spdif_pm_ops = { SET_RUNTIME_PM_OPS(rk_spdif_runtime_suspend, rk_spdif_runtime_resume, NULL) + SET_SYSTEM_SLEEP_PM_OPS(rockchip_spdif_suspend, rockchip_spdif_resume) }; static struct platform_driver rk_spdif_driver = { -- 2.34.1