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author | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-10-28 12:27:34 +0100 |
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committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-10-28 12:27:34 +0100 |
commit | f9cef506815386df4bd7e463b59e0a0984ce0355 (patch) | |
tree | b26a202b2f0472e3ebe889012312b115917717f9 /arch/arm/mach-s3c2416 | |
parent | 9ae21ca362679757786f5abe556c7943e9001426 (diff) | |
parent | cbff3eb3e6e3c618583a7435f87c1548aa12b0ad (diff) | |
download | talos-obmc-linux-f9cef506815386df4bd7e463b59e0a0984ce0355.tar.gz talos-obmc-linux-f9cef506815386df4bd7e463b59e0a0984ce0355.zip |
Merge branch 'for-rmk' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into devel-stable
Conflicts:
arch/arm/mach-s3c64xx/dev-audio.c
Diffstat (limited to 'arch/arm/mach-s3c2416')
-rw-r--r-- | arch/arm/mach-s3c2416/Kconfig | 6 | ||||
-rw-r--r-- | arch/arm/mach-s3c2416/Makefile | 2 | ||||
-rw-r--r-- | arch/arm/mach-s3c2416/irq.c | 2 | ||||
-rw-r--r-- | arch/arm/mach-s3c2416/pm.c | 84 | ||||
-rw-r--r-- | arch/arm/mach-s3c2416/s3c2416.c | 3 |
5 files changed, 95 insertions, 2 deletions
diff --git a/arch/arm/mach-s3c2416/Kconfig b/arch/arm/mach-s3c2416/Kconfig index 657e4fe17f39..87b9c9f003bd 100644 --- a/arch/arm/mach-s3c2416/Kconfig +++ b/arch/arm/mach-s3c2416/Kconfig @@ -25,6 +25,11 @@ config S3C2416_DMA help Internal config node for S3C2416 DMA support +config S3C2416_PM + bool + help + Internal config node to apply S3C2416 power management + menu "S3C2416 Machines" config MACH_SMDK2416 @@ -33,6 +38,7 @@ config MACH_SMDK2416 select S3C_DEV_FB select S3C_DEV_HSMMC select S3C_DEV_HSMMC1 + select S3C2416_PM if PM help Say Y here if you are using an SMDK2416 diff --git a/arch/arm/mach-s3c2416/Makefile b/arch/arm/mach-s3c2416/Makefile index 6c12c7bf40ad..ef038d62ffdb 100644 --- a/arch/arm/mach-s3c2416/Makefile +++ b/arch/arm/mach-s3c2416/Makefile @@ -11,7 +11,7 @@ obj- := obj-$(CONFIG_CPU_S3C2416) += s3c2416.o clock.o obj-$(CONFIG_CPU_S3C2416) += irq.o - +obj-$(CONFIG_S3C2416_PM) += pm.o #obj-$(CONFIG_S3C2416_DMA) += dma.o # Machine support diff --git a/arch/arm/mach-s3c2416/irq.c b/arch/arm/mach-s3c2416/irq.c index 89f521d59d06..084d121f368c 100644 --- a/arch/arm/mach-s3c2416/irq.c +++ b/arch/arm/mach-s3c2416/irq.c @@ -243,6 +243,8 @@ static int __init s3c2416_irq_add(struct sys_device *sysdev) static struct sysdev_driver s3c2416_irq_driver = { .add = s3c2416_irq_add, + .suspend = s3c24xx_irq_suspend, + .resume = s3c24xx_irq_resume, }; static int __init s3c2416_irq_init(void) diff --git a/arch/arm/mach-s3c2416/pm.c b/arch/arm/mach-s3c2416/pm.c new file mode 100644 index 000000000000..4a04205b04d5 --- /dev/null +++ b/arch/arm/mach-s3c2416/pm.c @@ -0,0 +1,84 @@ +/* linux/arch/arm/mach-s3c2416/pm.c + * + * Copyright (c) 2010 Samsung Electronics Co., Ltd. + * http://www.samsung.com + * + * S3C2416 - PM support (Based on Ben Dooks' S3C2412 PM support) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +#include <linux/sysdev.h> +#include <linux/io.h> + +#include <asm/cacheflush.h> + +#include <mach/regs-power.h> +#include <mach/regs-s3c2443-clock.h> + +#include <plat/cpu.h> +#include <plat/pm.h> + +extern void s3c2412_sleep_enter(void); + +static void s3c2416_cpu_suspend(void) +{ + flush_cache_all(); + + /* enable wakeup sources regardless of battery state */ + __raw_writel(S3C2443_PWRCFG_SLEEP, S3C2443_PWRCFG); + + /* set the mode as sleep, 2BED represents "Go to BED" */ + __raw_writel(0x2BED, S3C2443_PWRMODE); + + s3c2412_sleep_enter(); +} + +static void s3c2416_pm_prepare(void) +{ + /* + * write the magic value u-boot uses to check for resume into + * the INFORM0 register, and ensure INFORM1 is set to the + * correct address to resume from. + */ + __raw_writel(0x2BED, S3C2412_INFORM0); + __raw_writel(virt_to_phys(s3c_cpu_resume), S3C2412_INFORM1); +} + +static int s3c2416_pm_add(struct sys_device *sysdev) +{ + pm_cpu_prep = s3c2416_pm_prepare; + pm_cpu_sleep = s3c2416_cpu_suspend; + + return 0; +} + +static int s3c2416_pm_suspend(struct sys_device *dev, pm_message_t state) +{ + return 0; +} + +static int s3c2416_pm_resume(struct sys_device *dev) +{ + /* unset the return-from-sleep amd inform flags */ + __raw_writel(0x0, S3C2443_PWRMODE); + __raw_writel(0x0, S3C2412_INFORM0); + __raw_writel(0x0, S3C2412_INFORM1); + + return 0; +} + +static struct sysdev_driver s3c2416_pm_driver = { + .add = s3c2416_pm_add, + .suspend = s3c2416_pm_suspend, + .resume = s3c2416_pm_resume, +}; + +static __init int s3c2416_pm_init(void) +{ + return sysdev_driver_register(&s3c2416_sysclass, &s3c2416_pm_driver); +} + +arch_initcall(s3c2416_pm_init); diff --git a/arch/arm/mach-s3c2416/s3c2416.c b/arch/arm/mach-s3c2416/s3c2416.c index bc30245e133b..63f39cdc0972 100644 --- a/arch/arm/mach-s3c2416/s3c2416.c +++ b/arch/arm/mach-s3c2416/s3c2416.c @@ -56,6 +56,7 @@ #include <plat/iic-core.h> #include <plat/fb-core.h> +#include <plat/nand-core.h> static struct map_desc s3c2416_iodesc[] __initdata = { IODESC_ENT(WATCHDOG), @@ -100,7 +101,7 @@ void __init s3c2416_init_uarts(struct s3c2410_uartcfg *cfg, int no) { s3c24xx_init_uartdevs("s3c2440-uart", s3c2410_uart_resources, cfg, no); - s3c_device_nand.name = "s3c2416-nand"; + s3c_nand_setname("s3c2412-nand"); } /* s3c2416_map_io |