git fetch git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-integrator.git tags/integrator-for-v3.13-2
mvebu/soc
git fetch git://git.infradead.org/linux-mvebu.git tags/soc-3.13-2
+ highbank/soc
+ git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git tags/highbank-for-3.13
next/drivers
davinci/gpio
bootargs = "console=ttyAMA0";
};
+ psci {
+ compatible = "arm,psci";
+ method = "smc";
+ cpu_suspend = <0x84000002>;
+ cpu_off = <0x84000004>;
+ cpu_on = <0x84000006>;
+ };
+
soc {
#address-cells = <1>;
#size-cells = <1>;
*/
#include <linux/init.h>
-#include <linux/irqchip/arm-gic.h>
#include <linux/smp.h>
#include <linux/of.h>
select ARM_ERRATA_775420
select ARM_ERRATA_798181
select ARM_GIC
+ select ARM_PSCI
select ARM_TIMER_SP804
select CACHE_L2X0
select COMMON_CLK
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
#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;
#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
#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>
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)
{
.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;
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 = {
#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,
+++ /dev/null
-/*
- * 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();
-}
+++ /dev/null
-/*
- * 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
-};
#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)
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;
}
void __init highbank_pm_init(void)
{
+ if (!psci_ops.cpu_suspend)
+ return;
+
suspend_set_ops(&highbank_pm_ops);
}
config ARM_HIGHBANK_CPUIDLE
bool "CPU Idle Driver for Calxeda processors"
- depends on ARCH_HIGHBANK
+ depends on ARM_PSCI
select ARM_CPU_SUSPEND
help
Select this to enable cpuidle on Calxeda processors.
*/
#include <linux/cpuidle.h>
+#include <linux/cpu_pm.h>
#include <linux/init.h>
-#include <linux/io.h>
-#include <linux/of.h>
-#include <linux/time.h>
-#include <linux/delay.h>
-#include <linux/suspend.h>
+#include <linux/mm.h>
+#include <linux/platform_device.h>
#include <asm/cpuidle.h>
-#include <asm/proc-fns.h>
-#include <asm/smp_scu.h>
#include <asm/suspend.h>
-#include <asm/cacheflush.h>
-#include <asm/cp15.h>
-
-extern void highbank_set_cpu_jump(int cpu, void *jump_addr);
-extern void __iomem *scu_base_addr;
-
-static noinline void calxeda_idle_restore(void)
-{
- set_cr(get_cr() | CR_C);
- set_auxcr(get_auxcr() | 0x40);
- scu_power_mode(scu_base_addr, SCU_PM_NORMAL);
-}
+#include <asm/psci.h>
static int calxeda_idle_finish(unsigned long val)
{
- /* Already flushed cache, but do it again as the outer cache functions
- * dirty the cache with spinlocks */
- flush_cache_all();
-
- set_auxcr(get_auxcr() & ~0x40);
- set_cr(get_cr() & ~CR_C);
-
- scu_power_mode(scu_base_addr, SCU_PM_DORMANT);
-
- cpu_do_idle();
-
- /* Restore things if we didn't enter power-gating */
- calxeda_idle_restore();
- return 1;
+ const struct psci_power_state ps = {
+ .type = PSCI_POWER_STATE_TYPE_POWER_DOWN,
+ };
+ return psci_ops.cpu_suspend(ps, __pa(cpu_resume));
}
static int calxeda_pwrdown_idle(struct cpuidle_device *dev,
struct cpuidle_driver *drv,
int index)
{
- highbank_set_cpu_jump(smp_processor_id(), cpu_resume);
+ cpu_pm_enter();
cpu_suspend(0, calxeda_idle_finish);
+ cpu_pm_exit();
+
return index;
}
.state_count = 2,
};
-static int __init calxeda_cpuidle_init(void)
+static int __init calxeda_cpuidle_probe(struct platform_device *pdev)
{
- if (!of_machine_is_compatible("calxeda,highbank"))
- return -ENODEV;
-
return cpuidle_register(&calxeda_idle_driver, NULL);
}
-module_init(calxeda_cpuidle_init);
+
+static struct platform_driver calxeda_cpuidle_plat_driver = {
+ .driver = {
+ .name = "cpuidle-calxeda",
+ .owner = THIS_MODULE,
+ },
+ .probe = calxeda_cpuidle_probe,
+};
+
+module_platform_driver(calxeda_cpuidle_plat_driver);
projects / karo-tx-linux.git / commitdiff