From 4ffe79de7272234408a9179aa4c403ee1b67a362 Mon Sep 17 00:00:00 2001 From: Myy Miouyouyou Date: Thu, 7 Dec 2017 21:27:52 +0100 Subject: [PATCH] soc: rockchip: power-domain: export idle request We need to put the power status of HEVC/RKVDEC IP into IDLE unless we can't reset that IP or the SoC would crash down. rockchip_pmu_idle_request(dev, true)---> enter idle rockchip_pmu_idle_request(dev, false)---> exit idle Only the video codec drivers of rockchip platform would request this patch currently. I am not sure whether it is necessary to add a new function at generic power domain. I want someone give me some advises here. Signed-off-by: Myy Miouyouyou --- drivers/soc/rockchip/pm_domains.c | 23 +++++++++++++++++++++++ include/linux/rockchip_pmu.h | 15 +++++++++++++++ 2 files changed, 38 insertions(+) create mode 100644 include/linux/rockchip_pmu.h diff --git a/drivers/soc/rockchip/pm_domains.c b/drivers/soc/rockchip/pm_domains.c index 40b75748..0006ed53 100644 --- a/drivers/soc/rockchip/pm_domains.c +++ b/drivers/soc/rockchip/pm_domains.c @@ -180,6 +180,29 @@ static int rockchip_pmu_set_idle_request(struct rockchip_pm_domain *pd, return 0; } +int rockchip_pmu_idle_request(struct device *dev, bool idle) +{ + struct generic_pm_domain *genpd; + struct rockchip_pm_domain *pd; + int ret; + + if (IS_ERR_OR_NULL(dev)) + return -EINVAL; + + if (IS_ERR_OR_NULL(dev->pm_domain)) + return -EINVAL; + + genpd = pd_to_genpd(dev->pm_domain); + pd = to_rockchip_pd(genpd); + + mutex_lock(&pd->pmu->mutex); + ret = rockchip_pmu_set_idle_request(pd, idle); + mutex_unlock(&pd->pmu->mutex); + + return ret; +} +EXPORT_SYMBOL(rockchip_pmu_idle_request); + static int rockchip_pmu_save_qos(struct rockchip_pm_domain *pd) { int i; diff --git a/include/linux/rockchip_pmu.h b/include/linux/rockchip_pmu.h new file mode 100644 index 00000000..720b3314 --- /dev/null +++ b/include/linux/rockchip_pmu.h @@ -0,0 +1,15 @@ +/* + * pm_domain.h - Definitions and headers related to device power domains. + * + * Copyright (C) 2017 Randy Li . + * + * This file is released under the GPLv2. + */ + +#ifndef _LINUX_ROCKCHIP_PM_H +#define _LINUX_ROCKCHIP_PM_H +#include + +int rockchip_pmu_idle_request(struct device *dev, bool idle); + +#endif /* _LINUX_ROCKCHIP_PM_H */ -- 2.14.1