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Subject[PATCH v8 20/26] drivers: firmware: psci: Share a few internal PSCI functions
Date
Following changes needs to be able to call psci_get|set_domain_state() and
psci_dt_parse_state_node(), but from a separate file. Let's make that
possible by sharing them via a new internal PSCI header file.

Cc: Lina Iyer <ilina@codeaurora.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
---
drivers/firmware/psci/psci.c | 14 ++++++++------
drivers/firmware/psci/psci.h | 13 +++++++++++++
2 files changed, 21 insertions(+), 6 deletions(-)
create mode 100644 drivers/firmware/psci/psci.h

diff --git a/drivers/firmware/psci/psci.c b/drivers/firmware/psci/psci.c
index 40b2b8945018..463f78cda3be 100644
--- a/drivers/firmware/psci/psci.c
+++ b/drivers/firmware/psci/psci.c
@@ -34,6 +34,8 @@
#include <asm/smp_plat.h>
#include <asm/suspend.h>

+#include "psci.h"
+
/*
* While a 64-bit OS can make calls with SMC32 calling conventions, for some
* calls it is necessary to use SMC64 to pass or return 64-bit values.
@@ -90,12 +92,12 @@ static u32 psci_function_id[PSCI_FN_MAX];
static DEFINE_PER_CPU(u32, domain_state);
static u32 psci_cpu_suspend_feature;

-static inline u32 psci_get_domain_state(void)
+u32 psci_get_domain_state(void)
{
return this_cpu_read(domain_state);
}

-static inline void psci_set_domain_state(u32 state)
+void psci_set_domain_state(u32 state)
{
this_cpu_write(domain_state, state);
}
@@ -285,10 +287,7 @@ static int __init psci_features(u32 psci_func_id)
psci_func_id, 0, 0);
}

-#ifdef CONFIG_CPU_IDLE
-static DEFINE_PER_CPU_READ_MOSTLY(u32 *, psci_power_state);
-
-static int psci_dt_parse_state_node(struct device_node *np, u32 *state)
+int psci_dt_parse_state_node(struct device_node *np, u32 *state)
{
int err = of_property_read_u32(np, "arm,psci-suspend-param", state);

@@ -305,6 +304,9 @@ static int psci_dt_parse_state_node(struct device_node *np, u32 *state)
return 0;
}

+#ifdef CONFIG_CPU_IDLE
+static DEFINE_PER_CPU_READ_MOSTLY(u32 *, psci_power_state);
+
static int psci_dt_cpu_init_idle(struct device_node *cpu_node, int cpu)
{
int i, ret = 0, count = 0;
diff --git a/drivers/firmware/psci/psci.h b/drivers/firmware/psci/psci.h
new file mode 100644
index 000000000000..dc7b596daa2b
--- /dev/null
+++ b/drivers/firmware/psci/psci.h
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef __PSCI_H
+#define __PSCI_H
+
+struct device_node;
+
+u32 psci_get_domain_state(void);
+void psci_set_domain_state(u32 state);
+
+int psci_dt_parse_state_node(struct device_node *np, u32 *state);
+
+#endif /* __PSCI_H */
--
2.17.1
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