From mboxrd@z Thu Jan 1 00:00:00 1970 From: Magnus Damm Subject: [PATCH] Driver Core: Runtime PM callbacks for the Platform Bus V2 Date: Fri, 31 Jul 2009 21:46:58 +0900 Message-ID: <20090731124658.10540.29648.sendpatchset@rx1.opensource.se> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-pm-bounces@lists.linux-foundation.org Errors-To: linux-pm-bounces@lists.linux-foundation.org To: linux-pm@lists.linux-foundation.org Cc: gregkh@suse.de List-Id: linux-pm@vger.kernel.org From: Magnus Damm This patch adds default Runtime PM callbacks to the dev_pm_ops belonging to the platform bus. The callbacks are weak symbols that architecture specific code may override. Also, call pm_runtime_enable() for the platform bus struct device. Signed-off-by: Magnus Damm --- Needed by the SuperH platform bus Runtime PM implementation. Changes since V1: - Return -ENOSYS instead of -EINVAL. drivers/base/platform.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) --- 0001/drivers/base/platform.c +++ work/drivers/base/platform.c 2009-07-31 18:55:34.000000000 +0900 @@ -17,6 +17,7 @@ #include #include #include +#include #include "base.h" @@ -925,6 +926,30 @@ static int platform_pm_restore_noirq(str #endif /* !CONFIG_HIBERNATION */ +#ifdef CONFIG_PM_RUNTIME + +int __weak platform_pm_runtime_suspend(struct device *dev) +{ + return -ENOSYS; +}; + +int __weak platform_pm_runtime_resume(struct device *dev) +{ + return -ENOSYS; +}; + +void __weak platform_pm_runtime_idle(struct device *dev) +{ +}; + +#else /* !CONFIG_PM_RUNTIME */ + +#define platform_pm_runtime_suspend NULL +#define platform_pm_runtime_resume NULL +#define platform_pm_runtime_idle NULL + +#endif /* !CONFIG_PM_RUNTIME */ + static struct dev_pm_ops platform_dev_pm_ops = { .prepare = platform_pm_prepare, .complete = platform_pm_complete, @@ -940,6 +965,9 @@ static struct dev_pm_ops platform_dev_pm .thaw_noirq = platform_pm_thaw_noirq, .poweroff_noirq = platform_pm_poweroff_noirq, .restore_noirq = platform_pm_restore_noirq, + .runtime_suspend = platform_pm_runtime_suspend, + .runtime_resume = platform_pm_runtime_resume, + .runtime_idle = platform_pm_runtime_idle, }; #define PLATFORM_PM_OPS_PTR (&platform_dev_pm_ops) @@ -968,6 +996,9 @@ int __init platform_bus_init(void) error = device_register(&platform_bus); if (error) return error; + + pm_runtime_enable(&platform_bus); + error = bus_register(&platform_bus_type); if (error) device_unregister(&platform_bus);