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ARM: shmobile: apmu: Remove platsmp-apmu.h
After the removal of the legacy SMP fallbacks, platsmp-apmu.h is no longer needed outside platsmp-apmu.c. Hence remove platsmp-apmu.h, and make the functions exported previously static. As the header file also provided forward declarations, the code in platsmp-apmu.c must be reshuffled. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
This commit is contained in:
Geert Uytterhoeven
Simon Horman
parent
36a90c0553
commit
3bf6d77388
@ -23,7 +23,6 @@
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#include <asm/smp_plat.h>
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#include <asm/suspend.h>
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#include "common.h"
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#include "platsmp-apmu.h"
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#include "rcar-gen2.h"
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static struct {
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@ -87,6 +86,104 @@ static int __maybe_unused apmu_wrap(int cpu, int (*fn)(void __iomem *p, int cpu)
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return p ? fn(p, apmu_cpus[cpu].bit) : -EINVAL;
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}
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#if defined(CONFIG_HOTPLUG_CPU) || defined(CONFIG_SUSPEND)
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/* nicked from arch/arm/mach-exynos/hotplug.c */
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static inline void cpu_enter_lowpower_a15(void)
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{
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unsigned int v;
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asm volatile(
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" mrc p15, 0, %0, c1, c0, 0\n"
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" bic %0, %0, %1\n"
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" mcr p15, 0, %0, c1, c0, 0\n"
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: "=&r" (v)
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: "Ir" (CR_C)
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: "cc");
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flush_cache_louis();
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asm volatile(
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/*
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* Turn off coherency
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*/
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" mrc p15, 0, %0, c1, c0, 1\n"
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" bic %0, %0, %1\n"
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" mcr p15, 0, %0, c1, c0, 1\n"
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: "=&r" (v)
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: "Ir" (0x40)
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: "cc");
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isb();
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dsb();
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}
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static void shmobile_smp_apmu_cpu_shutdown(unsigned int cpu)
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{
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/* Select next sleep mode using the APMU */
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apmu_wrap(cpu, apmu_power_off);
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/* Do ARM specific CPU shutdown */
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cpu_enter_lowpower_a15();
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}
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#endif
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#if defined(CONFIG_HOTPLUG_CPU)
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static void shmobile_smp_apmu_cpu_die(unsigned int cpu)
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{
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/* For this particular CPU deregister boot vector */
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shmobile_smp_hook(cpu, 0, 0);
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/* Shutdown CPU core */
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shmobile_smp_apmu_cpu_shutdown(cpu);
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/* jump to shared mach-shmobile sleep / reset code */
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shmobile_smp_sleep();
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}
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static int shmobile_smp_apmu_cpu_kill(unsigned int cpu)
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{
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return apmu_wrap(cpu, apmu_power_off_poll);
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}
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#endif
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#if defined(CONFIG_SUSPEND)
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static int shmobile_smp_apmu_do_suspend(unsigned long cpu)
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{
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shmobile_smp_hook(cpu, __pa_symbol(cpu_resume), 0);
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shmobile_smp_apmu_cpu_shutdown(cpu);
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cpu_do_idle(); /* WFI selects Core Standby */
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return 1;
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}
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static inline void cpu_leave_lowpower(void)
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{
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unsigned int v;
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asm volatile("mrc p15, 0, %0, c1, c0, 0\n"
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" orr %0, %0, %1\n"
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" mcr p15, 0, %0, c1, c0, 0\n"
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" mrc p15, 0, %0, c1, c0, 1\n"
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" orr %0, %0, %2\n"
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" mcr p15, 0, %0, c1, c0, 1\n"
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: "=&r" (v)
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: "Ir" (CR_C), "Ir" (0x40)
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: "cc");
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}
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static int shmobile_smp_apmu_enter_suspend(suspend_state_t state)
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{
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cpu_suspend(smp_processor_id(), shmobile_smp_apmu_do_suspend);
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cpu_leave_lowpower();
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return 0;
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}
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void __init shmobile_smp_apmu_suspend_init(void)
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{
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shmobile_suspend_ops.enter = shmobile_smp_apmu_enter_suspend;
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}
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#endif
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#ifdef CONFIG_SMP
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static void apmu_init_cpu(struct resource *res, int cpu, int bit)
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{
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@ -162,7 +259,8 @@ static void __init shmobile_smp_apmu_setup_boot(void)
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shmobile_boot_fn_gen2 = shmobile_boot_fn;
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}
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int shmobile_smp_apmu_boot_secondary(unsigned int cpu, struct task_struct *idle)
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static int shmobile_smp_apmu_boot_secondary(unsigned int cpu,
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struct task_struct *idle)
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{
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/* For this particular CPU register boot vector */
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shmobile_smp_hook(cpu, __pa_symbol(shmobile_boot_apmu), 0);
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@ -189,101 +287,3 @@ static struct smp_operations apmu_smp_ops __initdata = {
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CPU_METHOD_OF_DECLARE(shmobile_smp_apmu, "renesas,apmu", &apmu_smp_ops);
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#endif /* CONFIG_SMP */
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#if defined(CONFIG_HOTPLUG_CPU) || defined(CONFIG_SUSPEND)
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/* nicked from arch/arm/mach-exynos/hotplug.c */
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static inline void cpu_enter_lowpower_a15(void)
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{
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unsigned int v;
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asm volatile(
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" mrc p15, 0, %0, c1, c0, 0\n"
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" bic %0, %0, %1\n"
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" mcr p15, 0, %0, c1, c0, 0\n"
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: "=&r" (v)
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: "Ir" (CR_C)
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: "cc");
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flush_cache_louis();
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asm volatile(
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/*
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* Turn off coherency
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*/
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" mrc p15, 0, %0, c1, c0, 1\n"
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" bic %0, %0, %1\n"
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" mcr p15, 0, %0, c1, c0, 1\n"
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: "=&r" (v)
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: "Ir" (0x40)
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: "cc");
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isb();
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dsb();
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}
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static void shmobile_smp_apmu_cpu_shutdown(unsigned int cpu)
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{
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/* Select next sleep mode using the APMU */
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apmu_wrap(cpu, apmu_power_off);
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/* Do ARM specific CPU shutdown */
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cpu_enter_lowpower_a15();
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}
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#endif
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#if defined(CONFIG_HOTPLUG_CPU)
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void shmobile_smp_apmu_cpu_die(unsigned int cpu)
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{
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/* For this particular CPU deregister boot vector */
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shmobile_smp_hook(cpu, 0, 0);
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/* Shutdown CPU core */
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shmobile_smp_apmu_cpu_shutdown(cpu);
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/* jump to shared mach-shmobile sleep / reset code */
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shmobile_smp_sleep();
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}
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int shmobile_smp_apmu_cpu_kill(unsigned int cpu)
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{
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return apmu_wrap(cpu, apmu_power_off_poll);
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}
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#endif
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#if defined(CONFIG_SUSPEND)
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static int shmobile_smp_apmu_do_suspend(unsigned long cpu)
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{
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shmobile_smp_hook(cpu, __pa_symbol(cpu_resume), 0);
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shmobile_smp_apmu_cpu_shutdown(cpu);
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cpu_do_idle(); /* WFI selects Core Standby */
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return 1;
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}
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static inline void cpu_leave_lowpower(void)
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{
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unsigned int v;
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asm volatile("mrc p15, 0, %0, c1, c0, 0\n"
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" orr %0, %0, %1\n"
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" mcr p15, 0, %0, c1, c0, 0\n"
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" mrc p15, 0, %0, c1, c0, 1\n"
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" orr %0, %0, %2\n"
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" mcr p15, 0, %0, c1, c0, 1\n"
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: "=&r" (v)
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: "Ir" (CR_C), "Ir" (0x40)
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: "cc");
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}
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static int shmobile_smp_apmu_enter_suspend(suspend_state_t state)
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{
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cpu_suspend(smp_processor_id(), shmobile_smp_apmu_do_suspend);
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cpu_leave_lowpower();
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return 0;
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}
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void __init shmobile_smp_apmu_suspend_init(void)
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{
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shmobile_suspend_ops.enter = shmobile_smp_apmu_enter_suspend;
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}
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#endif
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@ -1,24 +0,0 @@
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/*
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* rmobile apmu definition
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*
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* Copyright (C) 2014 Renesas Electronics Corporation
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef PLATSMP_APMU_H
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#define PLATSMP_APMU_H
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extern int shmobile_smp_apmu_boot_secondary(unsigned int cpu,
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struct task_struct *idle);
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extern void shmobile_smp_apmu_cpu_die(unsigned int cpu);
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extern int shmobile_smp_apmu_cpu_kill(unsigned int cpu);
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#endif /* PLATSMP_APMU_H */
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