diff options
author | Len Brown <len.brown@intel.com> | 2009-09-19 00:11:26 -0400 |
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committer | Len Brown <len.brown@intel.com> | 2009-09-19 00:11:26 -0400 |
commit | c602c65b2f81d14456771d1e3f15d1381f4b7efa (patch) | |
tree | f1f833c8dd6c1519eeb101be32f7fe54a9605af5 /arch/sh/kernel/cpu/shmobile/pm.c | |
parent | 3834f47291df475be3f0f0fb7ccaa098967cc054 (diff) | |
parent | 78f28b7c555359c67c2a0d23f7436e915329421e (diff) |
Merge branch 'linus' into sfi-release
Conflicts:
arch/x86/kernel/setup.c
drivers/acpi/power.c
init/main.c
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'arch/sh/kernel/cpu/shmobile/pm.c')
-rw-r--r-- | arch/sh/kernel/cpu/shmobile/pm.c | 42 |
1 files changed, 15 insertions, 27 deletions
diff --git a/arch/sh/kernel/cpu/shmobile/pm.c b/arch/sh/kernel/cpu/shmobile/pm.c index 8c067adf6830..ee3c2aaf66fb 100644 --- a/arch/sh/kernel/cpu/shmobile/pm.c +++ b/arch/sh/kernel/cpu/shmobile/pm.c @@ -1,5 +1,5 @@ /* - * arch/sh/kernel/cpu/sh4a/pm-sh_mobile.c + * arch/sh/kernel/cpu/shmobile/pm.c * * Power management support code for SuperH Mobile * @@ -32,40 +32,20 @@ * * R-standby mode is unsupported, but will be added in the future * U-standby mode is low priority since it needs bootloader hacks - * - * All modes should be tied in with cpuidle. But before that can - * happen we need to keep track of enabled hardware blocks so we - * can avoid entering sleep modes that stop clocks to hardware - * blocks that are in use even though the cpu core is idle. */ +#define ILRAM_BASE 0xe5200000 + extern const unsigned char sh_mobile_standby[]; extern const unsigned int sh_mobile_standby_size; -static void sh_mobile_call_standby(unsigned long mode) +void sh_mobile_call_standby(unsigned long mode) { - extern void *vbr_base; - void *onchip_mem = (void *)0xe5200000; /* ILRAM */ - void (*standby_onchip_mem)(unsigned long) = onchip_mem; - - /* Note: Wake up from sleep may generate exceptions! - * Setup VBR to point to on-chip ram if self-refresh is - * going to be used. - */ - if (mode & SUSP_SH_SF) - asm volatile("ldc %0, vbr" : : "r" (onchip_mem) : "memory"); - - /* Copy the assembly snippet to the otherwise ununsed ILRAM */ - memcpy(onchip_mem, sh_mobile_standby, sh_mobile_standby_size); - wmb(); - ctrl_barrier(); + void *onchip_mem = (void *)ILRAM_BASE; + void (*standby_onchip_mem)(unsigned long, unsigned long) = onchip_mem; /* Let assembly snippet in on-chip memory handle the rest */ - standby_onchip_mem(mode); - - /* Put VBR back in System RAM again */ - if (mode & SUSP_SH_SF) - asm volatile("ldc %0, vbr" : : "r" (&vbr_base) : "memory"); + standby_onchip_mem(mode, ILRAM_BASE); } static int sh_pm_enter(suspend_state_t state) @@ -85,7 +65,15 @@ static struct platform_suspend_ops sh_pm_ops = { static int __init sh_pm_init(void) { + void *onchip_mem = (void *)ILRAM_BASE; + + /* Copy the assembly snippet to the otherwise ununsed ILRAM */ + memcpy(onchip_mem, sh_mobile_standby, sh_mobile_standby_size); + wmb(); + ctrl_barrier(); + suspend_set_ops(&sh_pm_ops); + sh_mobile_setup_cpuidle(); return 0; } |