@@ -32,7 +32,7 @@ struct device_node;
struct cpuidle_ops {
int (*suspend)(unsigned long arg);
- int (*init)(struct device_node *, int cpu);
+ int (*init)(struct cpuidle_driver *, struct device_node *, int cpu);
};
struct of_cpuidle_method {
@@ -47,6 +47,6 @@ struct of_cpuidle_method {
extern int arm_cpuidle_suspend(int index);
-extern int arm_cpuidle_init(int cpu);
+extern int arm_cpuidle_init(struct cpuidle_driver *drv, int cpu);
#endif
@@ -122,6 +122,7 @@ static int __init arm_cpuidle_read_ops(struct device_node *dn, int cpu)
/**
* arm_cpuidle_init() - Initialize cpuidle_ops for a specific cpu
+ * @drv: the drv to be initialized
* @cpu: the cpu to be initialized
*
* Initialize the cpuidle ops with the device for the cpu and then call
@@ -137,7 +138,7 @@ static int __init arm_cpuidle_read_ops(struct device_node *dn, int cpu)
* -ENXIO if the HW reports a failure or a misconfiguration,
* -ENOMEM if the HW report an memory allocation failure
*/
-int __init arm_cpuidle_init(int cpu)
+int __init arm_cpuidle_init(struct cpuidle_driver *drv, int cpu)
{
struct device_node *cpu_node = of_cpu_device_node_get(cpu);
int ret;
@@ -147,7 +148,7 @@ int __init arm_cpuidle_init(int cpu)
ret = arm_cpuidle_read_ops(cpu_node, cpu);
if (!ret)
- ret = cpuidle_ops[cpu].init(cpu_node, cpu);
+ ret = cpuidle_ops[cpu].init(drv, cpu_node, cpu);
of_node_put(cpu_node);
@@ -19,6 +19,8 @@
#include <linux/init.h>
#include <linux/threads.h>
+struct cpuidle_driver;
+
/**
* struct cpu_operations - Callback operations for hotplugging CPUs.
*
@@ -58,7 +60,7 @@ struct cpu_operations {
int (*cpu_kill)(unsigned int cpu);
#endif
#ifdef CONFIG_CPU_IDLE
- int (*cpu_init_idle)(unsigned int);
+ int (*cpu_init_idle)(struct cpuidle_driver *, unsigned int);
int (*cpu_suspend)(unsigned long);
#endif
};
@@ -4,11 +4,13 @@
#include <asm/proc-fns.h>
+struct cpuidle_driver;
+
#ifdef CONFIG_CPU_IDLE
-extern int arm_cpuidle_init(unsigned int cpu);
+extern int arm_cpuidle_init(struct cpuidle_driver *drv, unsigned int cpu);
extern int arm_cpuidle_suspend(int index);
#else
-static inline int arm_cpuidle_init(unsigned int cpu)
+static inline int arm_cpuidle_init(struct cpuidle_driver *drv, unsigned int cpu)
{
return -EOPNOTSUPP;
}
@@ -18,13 +18,13 @@
#include <asm/cpuidle.h>
#include <asm/cpu_ops.h>
-int arm_cpuidle_init(unsigned int cpu)
+int arm_cpuidle_init(struct cpuidle_driver *drv, unsigned int cpu)
{
int ret = -EOPNOTSUPP;
if (cpu_ops[cpu] && cpu_ops[cpu]->cpu_suspend &&
cpu_ops[cpu]->cpu_init_idle)
- ret = cpu_ops[cpu]->cpu_init_idle(cpu);
+ ret = cpu_ops[cpu]->cpu_init_idle(drv, cpu);
return ret;
}
@@ -51,7 +51,7 @@ int arm_cpuidle_suspend(int index)
int acpi_processor_ffh_lpi_probe(unsigned int cpu)
{
- return arm_cpuidle_init(cpu);
+ return arm_cpuidle_init(NULL, cpu);
}
int acpi_processor_ffh_lpi_enter(struct acpi_lpi_state *lpi)
@@ -106,7 +106,7 @@ static int __init arm_idle_init_cpu(int cpu)
* Call arch CPU operations in order to initialize
* idle states suspend back-end specific data
*/
- ret = arm_cpuidle_init(cpu);
+ ret = arm_cpuidle_init(drv, cpu);
/*
* Allow the initialization to continue for other CPUs, if the reported
@@ -287,7 +287,8 @@ static int psci_dt_parse_state_node(struct device_node *np, u32 *state)
return 0;
}
-static int psci_dt_cpu_init_idle(struct device_node *cpu_node, int cpu)
+static int psci_dt_cpu_init_idle(struct cpuidle_driver *drv,
+ struct device_node *cpu_node, int cpu)
{
int i, ret = 0, count = 0;
u32 *psci_states;
@@ -375,7 +376,7 @@ static int __maybe_unused psci_acpi_cpu_init_idle(unsigned int cpu)
}
#endif
-int psci_cpu_init_idle(unsigned int cpu)
+int psci_cpu_init_idle(struct cpuidle_driver *drv, unsigned int cpu)
{
struct device_node *cpu_node;
int ret;
@@ -394,7 +395,7 @@ int psci_cpu_init_idle(unsigned int cpu)
if (!cpu_node)
return -ENODEV;
- ret = psci_dt_cpu_init_idle(cpu_node, cpu);
+ ret = psci_dt_cpu_init_idle(drv, cpu_node, cpu);
of_node_put(cpu_node);
@@ -208,7 +208,8 @@ static const struct of_device_id qcom_idle_state_match[] __initconst = {
{ },
};
-static int __init qcom_cpuidle_init(struct device_node *cpu_node, int cpu)
+static int __init qcom_cpuidle_init(struct cpuidle_driver *drv,
+ struct device_node *cpu_node, int cpu)
{
const struct of_device_id *match_id;
struct device_node *state_node;
@@ -20,9 +20,11 @@
#define PSCI_POWER_STATE_TYPE_STANDBY 0
#define PSCI_POWER_STATE_TYPE_POWER_DOWN 1
+struct cpuidle_driver;
+
bool psci_tos_resident_on(int cpu);
-int psci_cpu_init_idle(unsigned int cpu);
+int psci_cpu_init_idle(struct cpuidle_driver *drv, unsigned int cpu);
int psci_cpu_suspend_enter(unsigned long index);
enum psci_conduit {
To allow arch back-end init ops to operate on the cpuidle driver for the corresponding CPU, let's pass along a pointer to the struct cpuidle_driver* and forward it the relevant layers of callbacks for ARM/ARM64. Following changes for the PSCI firmware driver starts making use of this. Cc: Lina Iyer <ilina@codeaurora.org> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Cc: Russell King <linux@armlinux.org.uk> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Andy Gross <andy.gross@linaro.org> Cc: David Brown <david.brown@linaro.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> --- arch/arm/include/asm/cpuidle.h | 4 ++-- arch/arm/kernel/cpuidle.c | 5 +++-- arch/arm64/include/asm/cpu_ops.h | 4 +++- arch/arm64/include/asm/cpuidle.h | 6 ++++-- arch/arm64/kernel/cpuidle.c | 6 +++--- drivers/cpuidle/cpuidle-arm.c | 2 +- drivers/firmware/psci/psci.c | 7 ++++--- drivers/soc/qcom/spm.c | 3 ++- include/linux/psci.h | 4 +++- 9 files changed, 25 insertions(+), 16 deletions(-) -- 2.17.1