From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754909AbaKNIwY (ORCPT ); Fri, 14 Nov 2014 03:52:24 -0500 Received: from mailout1.w1.samsung.com ([210.118.77.11]:21083 "EHLO mailout1.w1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754637AbaKNIun (ORCPT ); Fri, 14 Nov 2014 03:50:43 -0500 X-AuditID: cbfec7f4-b7f6c6d00000120b-ec-5465c25f2faf From: Krzysztof Kozlowski To: "Rafael J. Wysocki" , Len Brown , Pavel Machek , Russell King , Dan Williams , Vinod Koul , Ulf Hansson , Alan Stern , linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, dmaengine@vger.kernel.org Cc: Kevin Hilman , Laurent Pinchart , Kyungmin Park , Marek Szyprowski , Bartlomiej Zolnierkiewicz , Krzysztof Kozlowski Subject: [PATCH v12 1/6] PM / Runtime: Add getter for querying the IRQ safe option Date: Fri, 14 Nov 2014 09:50:28 +0100 Message-id: <1415955033-29093-2-git-send-email-k.kozlowski@samsung.com> X-Mailer: git-send-email 1.9.1 In-reply-to: <1415955033-29093-1-git-send-email-k.kozlowski@samsung.com> References: <1415955033-29093-1-git-send-email-k.kozlowski@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFtrLLMWRmVeSWpSXmKPExsVy+t/xy7rxh1JDDJq/illsnLGe1WL61AuM Fqun/mW1eP3C0OLp5sdMFmeb3rBbdE5cwm4xa8peJovLu+awWXzuPcJocfsyr8XaI3fZLe6e Ospmceb0JVaLCb8vsFkcXxtu8bJvP4uDoEdLcw+bx+yOmawei/e8ZPLYtKqTzePOtT1sHluu trN4zL77g9Gjb8sqRo8Vq7+ze3zeJBfAFcVlk5Kak1mWWqRvl8CVselqYsE2oYqtn/pYGxh3 8HcxcnJICJhIXFj9nB3CFpO4cG89WxcjF4eQwFJGia6L7xlBEkICfUwSL/bYgNhsAsYSm5cv ASsSEWhnluhbN5UNJMEssIhJommqIogtLBAicXDDPyYQm0VAVWL2h4fMIDavgLvE+217oLbJ SZw8NpkVxOYU8JCYvHEVC8Qyd4nPl/8wT2DkXcDIsIpRNLU0uaA4KT3XUK84Mbe4NC9dLzk/ dxMjJMi/7GBcfMzqEKMAB6MSD69BQWqIEGtiWXFl7iFGCQ5mJRFepd1AId6UxMqq1KL8+KLS nNTiQ4xMHJxSDYyhgU+uGW2pWm4dt6f+s9WbXbJz99p/SHmsyGTC+PFZuGRUxc2XrO+ll7HJ sM3fwCaxb2vorJe2Bznt9GJe7zrOpvG2c9qGr7Z6ph3T/3etf/n+ltnHyX+52W5PjtUIfG9X UxV/R72m/qSNmnzabAF+fq0/y6uXTr10U/yRxqqwBTeDv3aeaLBQYinOSDTUYi4qTgQAaqj0 glACAAA= Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add a simple getter pm_runtime_is_irq_safe() for querying whether runtime PM IRQ safe was set or not. Various bus drivers implementing runtime PM may use choose to suspend differently based on IRQ safeness status of child driver (e.g. do not unprepare the clock if IRQ safe is not set). Signed-off-by: Krzysztof Kozlowski Reviewed-by: Ulf Hansson Acked-by: Rafael J. Wysocki --- Documentation/power/runtime_pm.txt | 4 ++++ include/linux/pm_runtime.h | 6 ++++++ 2 files changed, 10 insertions(+) diff --git a/Documentation/power/runtime_pm.txt b/Documentation/power/runtime_pm.txt index 0e5ea26b255a..44fe1d28a163 100644 --- a/Documentation/power/runtime_pm.txt +++ b/Documentation/power/runtime_pm.txt @@ -468,6 +468,10 @@ drivers/base/power/runtime.c and include/linux/pm_runtime.h: - set the power.irq_safe flag for the device, causing the runtime-PM callbacks to be invoked with interrupts off + bool pm_runtime_is_irq_safe(struct device *dev); + - return true if power.irq_safe flag was set for the device, causing + the runtime-PM callbacks to be invoked with interrupts off + void pm_runtime_mark_last_busy(struct device *dev); - set the power.last_busy field to the current time diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h index 367f49b9a1c9..44d74f0f182e 100644 --- a/include/linux/pm_runtime.h +++ b/include/linux/pm_runtime.h @@ -128,6 +128,11 @@ static inline void pm_runtime_mark_last_busy(struct device *dev) ACCESS_ONCE(dev->power.last_busy) = jiffies; } +static inline bool pm_runtime_is_irq_safe(struct device *dev) +{ + return dev->power.irq_safe; +} + #else /* !CONFIG_PM_RUNTIME */ static inline int __pm_runtime_idle(struct device *dev, int rpmflags) @@ -167,6 +172,7 @@ static inline bool pm_runtime_enabled(struct device *dev) { return false; } static inline void pm_runtime_no_callbacks(struct device *dev) {} static inline void pm_runtime_irq_safe(struct device *dev) {} +static inline bool pm_runtime_is_irq_safe(struct device *dev) { return false; } static inline bool pm_runtime_callbacks_present(struct device *dev) { return false; } static inline void pm_runtime_mark_last_busy(struct device *dev) {} -- 1.9.1