dmaengine: shdmac: extend PM methods
In order to make it possible to restore from hibernation not only in Linux but
also in e.g. U-Boot, we have to use sh_dmae_{suspend|resume}() for the {freeze|
thaw|restore}() PM methods. It's handy to achieve this with SIMPLE_DEV_PM_OPS()
macro; since that macro doesn't do anything when CONFIG_PM_SLEEP is undefined,
we don't need to #define sh_dmae_{suspend|resume} NULL anymore but we'll have to
enclose sh_dmae_{suspend|resume}() into the new #ifdef...
Based on original patch by Mikhail Ulyanov <mikhail.ulyanov@cogentembedded.com>.
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
diff --git a/drivers/dma/sh/shdmac.c b/drivers/dma/sh/shdmac.c
index 023344f..b2431aa 100644
--- a/drivers/dma/sh/shdmac.c
+++ b/drivers/dma/sh/shdmac.c
@@ -600,7 +600,9 @@
return sh_dmae_rst(shdev);
}
+#endif
+#ifdef CONFIG_PM_SLEEP
static int sh_dmae_suspend(struct device *dev)
{
return 0;
@@ -632,14 +634,10 @@
return 0;
}
-#else
-#define sh_dmae_suspend NULL
-#define sh_dmae_resume NULL
#endif
static const struct dev_pm_ops sh_dmae_pm = {
- .suspend = sh_dmae_suspend,
- .resume = sh_dmae_resume,
+ SET_SYSTEM_SLEEP_PM_OPS(sh_dmae_suspend, sh_dmae_resume)
SET_RUNTIME_PM_OPS(sh_dmae_runtime_suspend, sh_dmae_runtime_resume,
NULL)
};