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c9159db816
Updating to reflect @Miouyouyou repo Including workaround for 4.13-RC6 regression in net-stmmac logging
92 lines
2.7 KiB
Diff
92 lines
2.7 KiB
Diff
From f723bec5d7c860901ddae1634094d55bad2b8a4d Mon Sep 17 00:00:00 2001
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From: Randy Li <ayaka@soulik.info>
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Date: Tue, 9 May 2017 00:34:17 +0800
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Subject: [PATCH 7/9] soc: rockchip: power-domain: export idle request
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We need to put the power status of HEVC/RKVDEC IP into IDLE
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unless we can't reset that IP or the SoC would crash down.
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rockchip_pmu_idle_request(dev, true)---> enter idle
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rockchip_pmu_idle_request(dev, false)---> exit idle
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Only the video codec drivers of rockchip platform would
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request this patch currently.
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I am not sure whether it is necessary to add a new function
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at generic power domain. I want someone give me some advises
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here.
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Signed-off-by: Caesar Wang <wxt@rock-chips.com>
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Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
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Signed-off-by: Randy Li <ayaka@soulik.info>
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---
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drivers/soc/rockchip/pm_domains.c | 24 ++++++++++++++++++++++++
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include/linux/rockchip_pmu.h | 15 +++++++++++++++
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2 files changed, 39 insertions(+)
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create mode 100644 include/linux/rockchip_pmu.h
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diff --git a/drivers/soc/rockchip/pm_domains.c b/drivers/soc/rockchip/pm_domains.c
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index 796c46a6..c1bff1c8 100644
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--- a/drivers/soc/rockchip/pm_domains.c
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+++ b/drivers/soc/rockchip/pm_domains.c
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@@ -18,6 +18,7 @@
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#include <linux/clk.h>
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#include <linux/regmap.h>
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#include <linux/mfd/syscon.h>
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+#include <linux/rockchip_pmu.h>
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#include <dt-bindings/power/rk3288-power.h>
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#include <dt-bindings/power/rk3328-power.h>
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#include <dt-bindings/power/rk3368-power.h>
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@@ -179,6 +180,29 @@ static int rockchip_pmu_set_idle_request(struct rockchip_pm_domain *pd,
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return 0;
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}
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+int rockchip_pmu_idle_request(struct device *dev, bool idle)
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+{
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+ struct generic_pm_domain *genpd;
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+ struct rockchip_pm_domain *pd;
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+ int ret;
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+
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+ if (IS_ERR_OR_NULL(dev))
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+ return -EINVAL;
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+
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+ if (IS_ERR_OR_NULL(dev->pm_domain))
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+ return -EINVAL;
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+
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+ genpd = pd_to_genpd(dev->pm_domain);
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+ pd = to_rockchip_pd(genpd);
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+
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+ mutex_lock(&pd->pmu->mutex);
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+ ret = rockchip_pmu_set_idle_request(pd, idle);
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+ mutex_unlock(&pd->pmu->mutex);
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+
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+ return ret;
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+}
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+EXPORT_SYMBOL(rockchip_pmu_idle_request);
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+
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static int rockchip_pmu_save_qos(struct rockchip_pm_domain *pd)
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{
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int i;
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diff --git a/include/linux/rockchip_pmu.h b/include/linux/rockchip_pmu.h
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new file mode 100644
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index 00000000..720b3314
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--- /dev/null
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+++ b/include/linux/rockchip_pmu.h
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@@ -0,0 +1,15 @@
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+/*
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+ * pm_domain.h - Definitions and headers related to device power domains.
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+ *
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+ * Copyright (C) 2017 Randy Li <ayaka@soulik.info>.
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+ *
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+ * This file is released under the GPLv2.
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+ */
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+
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+#ifndef _LINUX_ROCKCHIP_PM_H
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+#define _LINUX_ROCKCHIP_PM_H
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+#include <linux/device.h>
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+
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+int rockchip_pmu_idle_request(struct device *dev, bool idle);
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+
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+#endif /* _LINUX_ROCKCHIP_PM_H */
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--
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2.13.0
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