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ARM: shmobile: r8a7791 SYSC setup code

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Add r8a7791 SYSC power management support.

Signed-off-by: Keita Kobayashi <keita.kobayashi.ym@renesas.com>
Acked-by: Magnus Damm <damm+renesas@opensource.se>
[horms+renesas@verge.net.au: rebased]
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
This commit is contained in:
keita kobayashi 2014-05-30 14:18:48 +09:00 committed by Simon Horman
parent 62872989bd
commit 5f6108bb96
4 changed files with 51 additions and 0 deletions
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1
arch/arm/mach-shmobile/Makefile
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@ -53,6 +53,7 @@ obj-$(CONFIG_ARCH_SH73A0) += pm-sh73a0.o
obj-$(CONFIG_ARCH_R8A7740) += pm-r8a7740.o pm-rmobile.o obj-$(CONFIG_ARCH_R8A7740) += pm-r8a7740.o pm-rmobile.o
obj-$(CONFIG_ARCH_R8A7779) += pm-r8a7779.o pm-rcar.o obj-$(CONFIG_ARCH_R8A7779) += pm-r8a7779.o pm-rcar.o
obj-$(CONFIG_ARCH_R8A7790) += pm-r8a7790.o pm-rcar.o obj-$(CONFIG_ARCH_R8A7790) += pm-r8a7790.o pm-rcar.o
obj-$(CONFIG_ARCH_R8A7791) += pm-r8a7791.o pm-rcar.o
# Board objects # Board objects
ifdef CONFIG_ARCH_SHMOBILE_MULTI ifdef CONFIG_ARCH_SHMOBILE_MULTI

1
arch/arm/mach-shmobile/include/mach/r8a7791.h
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@ -5,6 +5,7 @@ void r8a7791_add_standard_devices(void);
void r8a7791_add_dt_devices(void); void r8a7791_add_dt_devices(void);
void r8a7791_clock_init(void); void r8a7791_clock_init(void);
void r8a7791_pinmux_init(void); void r8a7791_pinmux_init(void);
void r8a7791_pm_init(void);
extern struct smp_operations r8a7791_smp_ops; extern struct smp_operations r8a7791_smp_ops;
#endif /* __ASM_R8A7791_H__ */ #endif /* __ASM_R8A7791_H__ */

47
arch/arm/mach-shmobile/pm-r8a7791.c Normal file
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@ -0,0 +1,47 @@
/*
* r8a7791 Power management support
*
* Copyright (C) 2014 Renesas Electronics Corporation
* Copyright (C) 2011 Renesas Solutions Corp.
* Copyright (C) 2011 Magnus Damm
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#include <asm/io.h>
#include <linux/kernel.h>
#include <mach/r8a7791.h>
#include "pm-rcar.h"
/* SYSC */
#define SYSCIER 0x0c
#define SYSCIMR 0x10
#if defined(CONFIG_SMP)
static void __init r8a7791_sysc_init(void)
{
void __iomem *base = rcar_sysc_init(0xe6180000);
/* enable all interrupt sources, but do not use interrupt handler */
iowrite32(0x0131000e, base + SYSCIER);
iowrite32(0, base + SYSCIMR);
}
#else /* CONFIG_SMP */
static inline void r8a7791_sysc_init(void) {}
#endif /* CONFIG_SMP */
void __init r8a7791_pm_init(void)
{
static int once;
if (once++)
return;
r8a7791_sysc_init();
}

2
arch/arm/mach-shmobile/smp-r8a7791.c
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@ -50,6 +50,8 @@ static void __init r8a7791_smp_prepare_cpus(unsigned int max_cpus)
writel_relaxed((readl_relaxed(p + CA15RESCNT) & ~0x0f) | 0xa5a50000, writel_relaxed((readl_relaxed(p + CA15RESCNT) & ~0x0f) | 0xa5a50000,
p + CA15RESCNT); p + CA15RESCNT);
iounmap(p); iounmap(p);
r8a7791_pm_init();
} }
static int r8a7791_smp_boot_secondary(unsigned int cpu, static int r8a7791_smp_boot_secondary(unsigned int cpu,