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 can get invoked when the last cpu going to power collapse
deepest low power mode.
Also remove "depends on COMPILE_TEST" for Kconfig option QCOM_RPMH so the
driver is only compiled for arm64 which supports psci_has_osi_support()
API.
Signed-off-by: Maulik Shah <mkshah@xxxxxxxxxxxxxx>
Reviewed-by: Srinivas Rao L <lsrao@xxxxxxxxxxxxxx>
---
drivers/soc/qcom/Kconfig | 2 +-
drivers/soc/qcom/rpmh.c | 6 ++++++
2 files changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/soc/qcom/Kconfig b/drivers/soc/qcom/Kconfig
index d0a73e7..2e581bc 100644
--- a/drivers/soc/qcom/Kconfig
+++ b/drivers/soc/qcom/Kconfig
@@ -105,7 +105,7 @@ config QCOM_RMTFS_MEM
config QCOM_RPMH
bool "Qualcomm RPM-Hardened (RPMH) Communication"
- depends on ARCH_QCOM && ARM64 || COMPILE_TEST
+ depends on ARCH_QCOM && ARM64
help
Support for communication with the hardened-RPM blocks in
Qualcomm Technologies Inc (QTI) SoCs. RPMH communication uses an
diff --git a/drivers/soc/qcom/rpmh.c b/drivers/soc/qcom/rpmh.c
index 3f5d9eb..326c58a 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>
@@ -160,6 +161,9 @@ 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;
}
@@ -388,6 +392,8 @@ 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;
}
--
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of Code Aurora Forum, hosted by The Linux Foundation
