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[158.174.22.210]) by smtp.gmail.com with ESMTPSA id j76-v6sm393983ljb.12.2018.11.29.09.47.21 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 29 Nov 2018 09:47:22 -0800 (PST) From: Ulf Hansson To: "Rafael J . Wysocki" , Sudeep Holla , Lorenzo Pieralisi , Mark Rutland , Daniel Lezcano , linux-pm@vger.kernel.org Cc: "Raju P . L . S . S . S . N" , Stephen Boyd , Tony Lindgren , Kevin Hilman , Lina Iyer , Ulf Hansson , Viresh Kumar , Vincent Guittot , Geert Uytterhoeven , linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, Russell King , Catalin Marinas , Will Deacon , Andy Gross , David Brown Subject: [PATCH v10 08/27] ARM/ARM64: cpuidle: Let back-end init ops take the driver as input Date: Thu, 29 Nov 2018 18:46:41 +0100 Message-Id: <20181129174700.16585-9-ulf.hansson@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20181129174700.16585-1-ulf.hansson@linaro.org> References: <20181129174700.16585-1-ulf.hansson@linaro.org> 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 Cc: Daniel Lezcano Cc: Russell King Cc: Catalin Marinas Cc: Will Deacon Cc: Andy Gross Cc: David Brown Signed-off-by: Ulf Hansson --- Changes in v10: - New patch! I am seeking an ack from relevant maintainers. Please ping me if you need further information about the hole series. Thanks! Ulf Hanssson --- 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.c | 7 ++++--- drivers/soc/qcom/spm.c | 3 ++- include/linux/psci.h | 4 +++- 9 files changed, 25 insertions(+), 16 deletions(-) -- 2.17.1 diff --git a/arch/arm/include/asm/cpuidle.h b/arch/arm/include/asm/cpuidle.h index 6b2ff7243b4b..bee0a7847733 100644 --- a/arch/arm/include/asm/cpuidle.h +++ b/arch/arm/include/asm/cpuidle.h @@ -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 diff --git a/arch/arm/kernel/cpuidle.c b/arch/arm/kernel/cpuidle.c index fda5579123a8..43778c9b373d 100644 --- a/arch/arm/kernel/cpuidle.c +++ b/arch/arm/kernel/cpuidle.c @@ -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); diff --git a/arch/arm64/include/asm/cpu_ops.h b/arch/arm64/include/asm/cpu_ops.h index 8f03446cf89f..8db870c29f1b 100644 --- a/arch/arm64/include/asm/cpu_ops.h +++ b/arch/arm64/include/asm/cpu_ops.h @@ -19,6 +19,8 @@ #include #include +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 }; diff --git a/arch/arm64/include/asm/cpuidle.h b/arch/arm64/include/asm/cpuidle.h index 3c5ddb429ea2..3fd3efb61649 100644 --- a/arch/arm64/include/asm/cpuidle.h +++ b/arch/arm64/include/asm/cpuidle.h @@ -4,11 +4,13 @@ #include +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; } diff --git a/arch/arm64/kernel/cpuidle.c b/arch/arm64/kernel/cpuidle.c index f2d13810daa8..aaf9dc5cb87a 100644 --- a/arch/arm64/kernel/cpuidle.c +++ b/arch/arm64/kernel/cpuidle.c @@ -18,13 +18,13 @@ #include #include -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) diff --git a/drivers/cpuidle/cpuidle-arm.c b/drivers/cpuidle/cpuidle-arm.c index 3a407a3ef22b..39413973b21d 100644 --- a/drivers/cpuidle/cpuidle-arm.c +++ b/drivers/cpuidle/cpuidle-arm.c @@ -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 diff --git a/drivers/firmware/psci.c b/drivers/firmware/psci.c index c80ec1d03274..878c4dcf0118 100644 --- a/drivers/firmware/psci.c +++ b/drivers/firmware/psci.c @@ -270,7 +270,8 @@ static int __init psci_features(u32 psci_func_id) #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) +static int psci_dt_cpu_init_idle(struct cpuidle_driver *drv, + struct device_node *cpu_node, int cpu) { int i, ret, count = 0; u32 *psci_states; @@ -371,7 +372,7 @@ 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; @@ -390,7 +391,7 @@ 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); diff --git a/drivers/soc/qcom/spm.c b/drivers/soc/qcom/spm.c index 53807e839664..6e967f0a8608 100644 --- a/drivers/soc/qcom/spm.c +++ b/drivers/soc/qcom/spm.c @@ -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; diff --git a/include/linux/psci.h b/include/linux/psci.h index 8b1b3b5935ab..4f29a3bff379 100644 --- a/include/linux/psci.h +++ b/include/linux/psci.h @@ -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 {