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| author |   Rajendra Nayak <rnayak@codeaurora.org> | 2015-04-23 14:03:09 +0530 |
|---|---|---|
| committer |   Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2015-05-12 23:55:37 +0200 |
| commit | 75f504004ab866c8f84749303b0f70953724e259 (patch) | |
| tree | 6da2563966637bab5da2a9377186aa9dd1afc015 | |
| parent | Linux 4.1-rc3 (diff) | |
| download | wireguard-linux-75f504004ab866c8f84749303b0f70953724e259.tar.xz wireguard-linux-75f504004ab866c8f84749303b0f70953724e259.zip | |
PM / clock_ops: Provide default runtime ops to users
Most users of PM clocks do the extact same things in the runtime
suspend/resume callbacks. Provide them USE_PM_CLK_RUNTIME_OPS so
as to avoid/remove boilerplate code.
Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Reviewed-by: Kevin Hilman <khilman@linaro.org>
Acked-by: Santosh Shilimkar <ssantosh@kernel.org>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| -rw-r--r-- | drivers/base/power/clock_ops.c | 38 | ||||
| -rw-r--r-- | include/linux/pm_clock.h | 10 |
2 files changed, 48 insertions, 0 deletions
diff --git a/drivers/base/power/clock_ops.c b/drivers/base/power/clock_ops.c index 7fdd0172605a..8abea669c82c 100644 --- a/drivers/base/power/clock_ops.c +++ b/drivers/base/power/clock_ops.c @@ -15,6 +15,7 @@ #include <linux/clkdev.h> #include <linux/slab.h> #include <linux/err.h> +#include <linux/pm_runtime.h> #ifdef CONFIG_PM @@ -367,6 +368,43 @@ static int pm_clk_notify(struct notifier_block *nb, return 0; } +int pm_clk_runtime_suspend(struct device *dev) +{ + int ret; + + dev_dbg(dev, "%s\n", __func__); + + ret = pm_generic_runtime_suspend(dev); + if (ret) { + dev_err(dev, "failed to suspend device\n"); + return ret; + } + + ret = pm_clk_suspend(dev); + if (ret) { + dev_err(dev, "failed to suspend clock\n"); + pm_generic_runtime_resume(dev); + return ret; + } + + return 0; +} + +int pm_clk_runtime_resume(struct device *dev) +{ + int ret; + + dev_dbg(dev, "%s\n", __func__); + + ret = pm_clk_resume(dev); + if (ret) { + dev_err(dev, "failed to resume clock\n"); + return ret; + } + + return pm_generic_runtime_resume(dev); +} + #else /* !CONFIG_PM */ /** diff --git a/include/linux/pm_clock.h b/include/linux/pm_clock.h index 0b0039634410..25266c600021 100644 --- a/include/linux/pm_clock.h +++ b/include/linux/pm_clock.h @@ -20,6 +20,16 @@ struct pm_clk_notifier_block { struct clk; +#ifdef CONFIG_PM +extern int pm_clk_runtime_suspend(struct device *dev); +extern int pm_clk_runtime_resume(struct device *dev); +#define USE_PM_CLK_RUNTIME_OPS \ + .runtime_suspend = pm_clk_runtime_suspend, \ + .runtime_resume = pm_clk_runtime_resume, +#else +#define USE_PM_CLK_RUNTIME_OPS +#endif + #ifdef CONFIG_PM_CLK static inline bool pm_clk_no_clocks(struct device *dev) { |