From: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
To: "Rafael J. Wysocki" <rjw@rjwysocki.net>,
Pavel Machek <pavel@ucw.cz>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Stephen Boyd <sboyd@kernel.org>, Taniya Das <tdas@codeaurora.org>,
Michael Turquette <mturquette@baylibre.com>,
Andy Gross <agross@kernel.org>,
Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-clk@vger.kernel.org, linux-arm-msm@vger.kernel.org
Subject: [PATCH v2 1/5] PM: runtime: add devm_pm_runtime_enable helper
Date: Wed, 28 Jul 2021 17:24:41 +0300 [thread overview]
Message-ID: <20210728142445.774158-2-dmitry.baryshkov@linaro.org> (raw)
In-Reply-To: <20210728142445.774158-1-dmitry.baryshkov@linaro.org>
Add helper function handling typical driver action: call
pm_runtime_enable at the probe() time and disable it during remove().
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
drivers/base/power/runtime.c | 17 +++++++++++++++++
include/linux/pm_runtime.h | 4 ++++
2 files changed, 21 insertions(+)
diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c
index 8a66eaf731e4..ec94049442b9 100644
--- a/drivers/base/power/runtime.c
+++ b/drivers/base/power/runtime.c
@@ -1447,6 +1447,23 @@ void pm_runtime_enable(struct device *dev)
}
EXPORT_SYMBOL_GPL(pm_runtime_enable);
+static void pm_runtime_disable_action(void *data)
+{
+ pm_runtime_disable(data);
+}
+
+/**
+ * devm_pm_runtime_enable - devres-enabled version of pm_runtime_enable.
+ * @dev: Device to handle.
+ */
+int devm_pm_runtime_enable(struct device *dev)
+{
+ pm_runtime_enable(dev);
+
+ return devm_add_action_or_reset(dev, pm_runtime_disable_action, dev);
+}
+EXPORT_SYMBOL_GPL(devm_pm_runtime_enable);
+
/**
* pm_runtime_forbid - Block runtime PM of a device.
* @dev: Device to handle.
diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h
index aab8b35e9f8a..222da43b7096 100644
--- a/include/linux/pm_runtime.h
+++ b/include/linux/pm_runtime.h
@@ -59,6 +59,8 @@ extern void pm_runtime_put_suppliers(struct device *dev);
extern void pm_runtime_new_link(struct device *dev);
extern void pm_runtime_drop_link(struct device_link *link);
+extern int devm_pm_runtime_enable(struct device *dev);
+
/**
* pm_runtime_get_if_in_use - Conditionally bump up runtime PM usage counter.
* @dev: Target device.
@@ -253,6 +255,8 @@ static inline void __pm_runtime_disable(struct device *dev, bool c) {}
static inline void pm_runtime_allow(struct device *dev) {}
static inline void pm_runtime_forbid(struct device *dev) {}
+static inline int devm_pm_runtime_enable(struct device *dev) { return 0; }
+
static inline void pm_suspend_ignore_children(struct device *dev, bool enable) {}
static inline void pm_runtime_get_noresume(struct device *dev) {}
static inline void pm_runtime_put_noidle(struct device *dev) {}
--
2.30.2
next prev parent reply other threads:[~2021-07-28 14:25 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-28 14:24 [PATCH v2 0/5] PM: add two devres helpers and use them in qcom cc Dmitry Baryshkov
2021-07-28 14:24 ` Dmitry Baryshkov [this message]
2021-07-28 20:04 ` [PATCH v2 1/5] PM: runtime: add devm_pm_runtime_enable helper Bjorn Andersson
2021-07-28 14:24 ` [PATCH v2 2/5] PM: clk: add devm_pm_clk_create helper Dmitry Baryshkov
2021-07-28 20:05 ` Bjorn Andersson
2021-07-28 14:24 ` [PATCH v2 3/5] clk: qcom: use devm_pm_runtime_enable and devm_pm_clk_create Dmitry Baryshkov
2021-07-28 15:00 ` Bjorn Andersson
2021-07-29 14:28 ` Dmitry Baryshkov
2021-07-28 14:24 ` [PATCH v2 4/5] clk: qcom: use common code for qcom_cc_probe_by_index Dmitry Baryshkov
2021-07-28 14:24 ` [PATCH v2 5/5] clk: qcom: move pm_clk functionality into common code Dmitry Baryshkov
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