[v5,7/7] soc: qcom: rpmh: Invoke rpmh_flush for dirty caches

Commit Message

Maulik Shah Feb. 19, 2020, 10:40 a.m. UTC

Add changes to invoke rpmh flush when the data in cache is dirty.

This is done only if OSI is not supported in PSCI. If OSI is supported
rpmh_flush will get invoked by power domain off call when the last cpu
in the domain is going to power collapse.

Signed-off-by: Maulik Shah <[e-mail]>
---
 drivers/soc/qcom/rpmh.c | 6 ++++++
 1 file changed, 6 insertions(+)

Patch

diff --git a/drivers/soc/qcom/rpmh.c b/drivers/soc/qcom/rpmh.c
index 83ba4e0..839af8d 100644
--- a/drivers/soc/qcom/rpmh.c
+++ b/drivers/soc/qcom/rpmh.c
@@ -12,6 +12,7 @@ 
 #include <linux/module.h>
 #include <linux/of.h>
 #include <linux/platform_device.h>
+#include <linux/psci.h>
 #include <linux/slab.h>
 #include <linux/spinlock.h>
 #include <linux/types.h>
@@ -163,6 +164,9 @@  static struct cache_req *cache_rpm_request(struct rpmh_ctrlr *ctrlr,
 unlock:
 	spin_unlock_irqrestore(&ctrlr->cache_lock, flags);
 
+	if (ctrlr->dirty && !psci_has_osi_support())
+		return rpmh_flush(ctrlr) ? ERR_PTR(-EINVAL) : req;
+
 	return req;
 }
 
@@ -391,6 +395,8 @@  int rpmh_write_batch(const struct device *dev, enum rpmh_state state,
 
 	if (state != RPMH_ACTIVE_ONLY_STATE) {
 		cache_batch(ctrlr, req);
+		if (!psci_has_osi_support())
+			return rpmh_flush(ctrlr);
 		return 0;
 	}