diff options
| author | Magnus Damm <damm@opensource.se> | 2011-09-25 23:18:42 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rjw@sisk.pl> | 2011-09-25 23:18:42 +0200 |
| commit | 06b841666a5a47918d31472dd77837906f999a9a (patch) | |
| tree | 9afdaad5000daff16b995959fc2458ba338567a2 /arch/arm/mach-shmobile/pm-sh7372.c | |
| parent | PM / Domains: Preliminary support for devices with power.irq_safe set (diff) | |
| download | linux-06b841666a5a47918d31472dd77837906f999a9a.tar.xz linux-06b841666a5a47918d31472dd77837906f999a9a.zip | |
ARM: mach-shmobile: sh7372 generic suspend/resume support
Convert the sh7372 Core Standby code to make use
of the new generic ARM cpu suspend/resume code.
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Diffstat (limited to 'arch/arm/mach-shmobile/pm-sh7372.c')
| -rw-r--r-- | arch/arm/mach-shmobile/pm-sh7372.c | 36 |
1 files changed, 16 insertions, 20 deletions
diff --git a/arch/arm/mach-shmobile/pm-sh7372.c b/arch/arm/mach-shmobile/pm-sh7372.c index ac47bfcd287e..aa7d352920d4 100644 --- a/arch/arm/mach-shmobile/pm-sh7372.c +++ b/arch/arm/mach-shmobile/pm-sh7372.c @@ -21,6 +21,7 @@ #include <asm/system.h> #include <asm/io.h> #include <asm/tlbflush.h> +#include <asm/suspend.h> #include <mach/common.h> #include <mach/sh7372.h> @@ -152,30 +153,25 @@ struct sh7372_pm_domain sh7372_a3sg = { #endif /* CONFIG_PM */ -static void sh7372_enter_core_standby(void) +static int sh7372_do_idle_core_standby(unsigned long unused) { - void __iomem *smfram = (void __iomem *)SMFRAM; - - __raw_writel(0, APARMBAREA); /* translate 4k */ - __raw_writel(__pa(sh7372_cpu_resume), SBAR); /* set reset vector */ - __raw_writel(0x10, SYSTBCR); /* enable core standby */ - - __raw_writel(0, smfram + 0x3c); /* clear page table address */ - - sh7372_cpu_suspend(); - cpu_init(); + cpu_do_idle(); /* WFI when SYSTBCR == 0x10 -> Core Standby */ + return 0; +} - /* if page table address is non-NULL then we have been powered down */ - if (__raw_readl(smfram + 0x3c)) { - __raw_writel(__raw_readl(smfram + 0x40), - __va(__raw_readl(smfram + 0x3c))); +static void sh7372_enter_core_standby(void) +{ + /* set reset vector, translate 4k */ + __raw_writel(__pa(sh7372_resume_core_standby), SBAR); + __raw_writel(0, APARMBAREA); - flush_tlb_all(); - set_cr(__raw_readl(smfram + 0x38)); - } + /* enter sleep mode with SYSTBCR to 0x10 */ + __raw_writel(0x10, SYSTBCR); + cpu_suspend(0, sh7372_do_idle_core_standby); + __raw_writel(0, SYSTBCR); - __raw_writel(0, SYSTBCR); /* disable core standby */ - __raw_writel(0, SBAR); /* disable reset vector translation */ + /* disable reset vector translation */ + __raw_writel(0, SBAR); } #ifdef CONFIG_CPU_IDLE |