@@ -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 */
/**
@@ -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)
{
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> --- drivers/base/power/clock_ops.c | 38 ++++++++++++++++++++++++++++++++++++++ include/linux/pm_clock.h | 10 ++++++++++ 2 files changed, 48 insertions(+)