linux-stable/arch/arm/mach-highbank/sysregs.h
Rob Herring 63fc1370c1 ARM: highbank: mask cluster id from cpu_logical_map
With commit a0ae0240 (ARM: kernel: add device tree init map function),
the cpu id value may include the cluster id and is no longer 0-3, so we
need to mask it now to get the right hard cpu index.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
2013-01-31 13:54:30 -06:00

86 lines
2.3 KiB
C

/*
* 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/>.
*/
#ifndef _MACH_HIGHBANK__SYSREGS_H_
#define _MACH_HIGHBANK__SYSREGS_H_
#include <linux/io.h>
#include <linux/smp.h>
#include <asm/smp_plat.h>
#include <asm/smp_scu.h>
#include "core.h"
extern void __iomem *sregs_base;
#define HB_SREG_A9_PWR_REQ 0xf00
#define HB_SREG_A9_BOOT_STAT 0xf04
#define HB_SREG_A9_BOOT_DATA 0xf08
#define HB_PWR_SUSPEND 0
#define HB_PWR_SOFT_RESET 1
#define HB_PWR_HARD_RESET 2
#define HB_PWR_SHUTDOWN 3
#define SREG_CPU_PWR_CTRL(c) (0x200 + ((c) * 4))
static inline void highbank_set_core_pwr(void)
{
int cpu = MPIDR_AFFINITY_LEVEL(cpu_logical_map(smp_processor_id()), 0);
if (scu_base_addr)
scu_power_mode(scu_base_addr, SCU_PM_POWEROFF);
else
writel_relaxed(1, sregs_base + SREG_CPU_PWR_CTRL(cpu));
}
static inline void highbank_clear_core_pwr(void)
{
int cpu = MPIDR_AFFINITY_LEVEL(cpu_logical_map(smp_processor_id()), 0);
if (scu_base_addr)
scu_power_mode(scu_base_addr, SCU_PM_NORMAL);
else
writel_relaxed(0, sregs_base + SREG_CPU_PWR_CTRL(cpu));
}
static inline void highbank_set_pwr_suspend(void)
{
writel(HB_PWR_SUSPEND, sregs_base + HB_SREG_A9_PWR_REQ);
highbank_set_core_pwr();
}
static inline void highbank_set_pwr_shutdown(void)
{
writel(HB_PWR_SHUTDOWN, sregs_base + HB_SREG_A9_PWR_REQ);
highbank_set_core_pwr();
}
static inline void highbank_set_pwr_soft_reset(void)
{
writel(HB_PWR_SOFT_RESET, sregs_base + HB_SREG_A9_PWR_REQ);
highbank_set_core_pwr();
}
static inline void highbank_set_pwr_hard_reset(void)
{
writel(HB_PWR_HARD_RESET, sregs_base + HB_SREG_A9_PWR_REQ);
highbank_set_core_pwr();
}
static inline void highbank_clear_pwr_request(void)
{
writel(~0UL, sregs_base + HB_SREG_A9_PWR_REQ);
highbank_clear_core_pwr();
}
#endif