diff options
Diffstat (limited to 'arch/arm/mach-highbank')
| -rw-r--r-- | arch/arm/mach-highbank/Kconfig | 1 | ||||
| -rw-r--r-- | arch/arm/mach-highbank/Makefile | 2 | ||||
| -rw-r--r-- | arch/arm/mach-highbank/core.h | 4 | ||||
| -rw-r--r-- | arch/arm/mach-highbank/highbank.c | 24 | ||||
| -rw-r--r-- | arch/arm/mach-highbank/hotplug.c | 37 | ||||
| -rw-r--r-- | arch/arm/mach-highbank/platsmp.c | 68 | ||||
| -rw-r--r-- | arch/arm/mach-highbank/pm.c | 27 |
7 files changed, 19 insertions, 144 deletions
diff --git a/arch/arm/mach-highbank/Kconfig b/arch/arm/mach-highbank/Kconfig index 616408d76be5..fe98df44579c 100644 --- a/arch/arm/mach-highbank/Kconfig +++ b/arch/arm/mach-highbank/Kconfig @@ -10,6 +10,7 @@ config ARCH_HIGHBANK select ARM_ERRATA_775420 select ARM_ERRATA_798181 select ARM_GIC + select ARM_PSCI select ARM_TIMER_SP804 select CACHE_L2X0 select COMMON_CLK diff --git a/arch/arm/mach-highbank/Makefile b/arch/arm/mach-highbank/Makefile index 8a1ef576d79f..55840f414d3e 100644 --- a/arch/arm/mach-highbank/Makefile +++ b/arch/arm/mach-highbank/Makefile @@ -3,6 +3,4 @@ obj-y := highbank.o system.o smc.o plus_sec := $(call as-instr,.arch_extension sec,+sec) AFLAGS_smc.o :=-Wa,-march=armv7-a$(plus_sec) -obj-$(CONFIG_SMP) += platsmp.o -obj-$(CONFIG_HOTPLUG_CPU) += hotplug.o obj-$(CONFIG_PM_SLEEP) += pm.o diff --git a/arch/arm/mach-highbank/core.h b/arch/arm/mach-highbank/core.h index aea1ec5ab6f8..7ec5edcd1336 100644 --- a/arch/arm/mach-highbank/core.h +++ b/arch/arm/mach-highbank/core.h @@ -3,7 +3,6 @@ #include <linux/reboot.h> -extern void highbank_set_cpu_jump(int cpu, void *jump_addr); extern void highbank_restart(enum reboot_mode, const char *); extern void __iomem *scu_base_addr; @@ -14,8 +13,5 @@ static inline void highbank_pm_init(void) {} #endif extern void highbank_smc1(int fn, int arg); -extern void highbank_cpu_die(unsigned int cpu); - -extern struct smp_operations highbank_smp_ops; #endif diff --git a/arch/arm/mach-highbank/highbank.c b/arch/arm/mach-highbank/highbank.c index e6d6eacea9d0..b3d7e5634b83 100644 --- a/arch/arm/mach-highbank/highbank.c +++ b/arch/arm/mach-highbank/highbank.c @@ -24,10 +24,9 @@ #include <linux/of_platform.h> #include <linux/of_address.h> #include <linux/amba/bus.h> +#include <linux/platform_device.h> -#include <asm/cacheflush.h> -#include <asm/cputype.h> -#include <asm/smp_plat.h> +#include <asm/psci.h> #include <asm/hardware/cache-l2x0.h> #include <asm/mach/arch.h> #include <asm/mach/map.h> @@ -48,17 +47,6 @@ static void __init highbank_scu_map_io(void) scu_base_addr = ioremap(base, SZ_4K); } -#define HB_JUMP_TABLE_PHYS(cpu) (0x40 + (0x10 * (cpu))) -#define HB_JUMP_TABLE_VIRT(cpu) phys_to_virt(HB_JUMP_TABLE_PHYS(cpu)) - -void highbank_set_cpu_jump(int cpu, void *jump_addr) -{ - cpu = MPIDR_AFFINITY_LEVEL(cpu_logical_map(cpu), 0); - writel(virt_to_phys(jump_addr), HB_JUMP_TABLE_VIRT(cpu)); - __cpuc_flush_dcache_area(HB_JUMP_TABLE_VIRT(cpu), 16); - outer_clean_range(HB_JUMP_TABLE_PHYS(cpu), - HB_JUMP_TABLE_PHYS(cpu) + 15); -} static void highbank_l2x0_disable(void) { @@ -138,6 +126,10 @@ static struct notifier_block highbank_platform_nb = { .notifier_call = highbank_platform_notifier, }; +static struct platform_device highbank_cpuidle_device = { + .name = "cpuidle-calxeda", +}; + static void __init highbank_init(void) { struct device_node *np; @@ -154,6 +146,9 @@ static void __init highbank_init(void) bus_register_notifier(&amba_bustype, &highbank_amba_nb); of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); + + if (psci_ops.cpu_suspend) + platform_device_register(&highbank_cpuidle_device); } static const char *highbank_match[] __initconst = { @@ -166,7 +161,6 @@ DT_MACHINE_START(HIGHBANK, "Highbank") #if defined(CONFIG_ZONE_DMA) && defined(CONFIG_ARM_LPAE) .dma_zone_size = (4ULL * SZ_1G), #endif - .smp = smp_ops(highbank_smp_ops), .init_irq = highbank_init_irq, .init_machine = highbank_init, .dt_compat = highbank_match, diff --git a/arch/arm/mach-highbank/hotplug.c b/arch/arm/mach-highbank/hotplug.c deleted file mode 100644 index a019e4e86e51..000000000000 --- a/arch/arm/mach-highbank/hotplug.c +++ /dev/null @@ -1,37 +0,0 @@ -/* - * Copyright 2011 Calxeda, Inc. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program. If not, see <http://www.gnu.org/licenses/>. - */ -#include <linux/kernel.h> -#include <asm/cacheflush.h> - -#include "core.h" -#include "sysregs.h" - -extern void secondary_startup(void); - -/* - * platform-specific code to shutdown a CPU - * - */ -void __ref highbank_cpu_die(unsigned int cpu) -{ - highbank_set_cpu_jump(cpu, phys_to_virt(0)); - - flush_cache_louis(); - highbank_set_core_pwr(); - - while (1) - cpu_do_idle(); -} diff --git a/arch/arm/mach-highbank/platsmp.c b/arch/arm/mach-highbank/platsmp.c deleted file mode 100644 index 32d75cf55cbc..000000000000 --- a/arch/arm/mach-highbank/platsmp.c +++ /dev/null @@ -1,68 +0,0 @@ -/* - * Copyright 2010-2011 Calxeda, Inc. - * Based on platsmp.c, Copyright (C) 2002 ARM Ltd. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program. If not, see <http://www.gnu.org/licenses/>. - */ -#include <linux/init.h> -#include <linux/smp.h> -#include <linux/io.h> - -#include <asm/smp_scu.h> - -#include "core.h" - -extern void secondary_startup(void); - -static int highbank_boot_secondary(unsigned int cpu, struct task_struct *idle) -{ - highbank_set_cpu_jump(cpu, secondary_startup); - arch_send_wakeup_ipi_mask(cpumask_of(cpu)); - return 0; -} - -/* - * Initialise the CPU possible map early - this describes the CPUs - * which may be present or become present in the system. - */ -static void __init highbank_smp_init_cpus(void) -{ - unsigned int i, ncores = 4; - - /* sanity check */ - if (ncores > NR_CPUS) { - printk(KERN_WARNING - "highbank: no. of cores (%d) greater than configured " - "maximum of %d - clipping\n", - ncores, NR_CPUS); - ncores = NR_CPUS; - } - - for (i = 0; i < ncores; i++) - set_cpu_possible(i, true); -} - -static void __init highbank_smp_prepare_cpus(unsigned int max_cpus) -{ - if (scu_base_addr) - scu_enable(scu_base_addr); -} - -struct smp_operations highbank_smp_ops __initdata = { - .smp_init_cpus = highbank_smp_init_cpus, - .smp_prepare_cpus = highbank_smp_prepare_cpus, - .smp_boot_secondary = highbank_boot_secondary, -#ifdef CONFIG_HOTPLUG_CPU - .cpu_die = highbank_cpu_die, -#endif -}; diff --git a/arch/arm/mach-highbank/pm.c b/arch/arm/mach-highbank/pm.c index 04eddb4f4380..7f2bd85eb935 100644 --- a/arch/arm/mach-highbank/pm.c +++ b/arch/arm/mach-highbank/pm.c @@ -16,27 +16,19 @@ #include <linux/cpu_pm.h> #include <linux/init.h> -#include <linux/io.h> #include <linux/suspend.h> -#include <asm/cacheflush.h> -#include <asm/proc-fns.h> #include <asm/suspend.h> - -#include "core.h" -#include "sysregs.h" +#include <asm/psci.h> static int highbank_suspend_finish(unsigned long val) { - outer_flush_all(); - outer_disable(); - - highbank_set_pwr_suspend(); - - cpu_do_idle(); + const struct psci_power_state ps = { + .type = PSCI_POWER_STATE_TYPE_POWER_DOWN, + .affinity_level = 1, + }; - highbank_clear_pwr_request(); - return 0; + return psci_ops.cpu_suspend(ps, __pa(cpu_resume)); } static int highbank_pm_enter(suspend_state_t state) @@ -44,15 +36,11 @@ static int highbank_pm_enter(suspend_state_t state) cpu_pm_enter(); cpu_cluster_pm_enter(); - highbank_set_cpu_jump(0, cpu_resume); cpu_suspend(0, highbank_suspend_finish); cpu_cluster_pm_exit(); cpu_pm_exit(); - highbank_smc1(0x102, 0x1); - if (scu_base_addr) - scu_enable(scu_base_addr); return 0; } @@ -63,5 +51,8 @@ static const struct platform_suspend_ops highbank_pm_ops = { void __init highbank_pm_init(void) { + if (!psci_ops.cpu_suspend) + return; + suspend_set_ops(&highbank_pm_ops); } |
