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authorJoseph Lo <josephl@nvidia.com>2013-06-04 18:47:33 +0800
committerStephen Warren <swarren@nvidia.com>2013-06-05 11:44:54 -0600
commitbf91add4a0feb7a8624a1f6b3fd4d6dbe9dce1bc (patch)
tree4d884d56774156f70140aff427178ca637739e23 /arch
parente22dc2b25655706751789a8d035b57bf04299cbd (diff)
downloadop-kernel-dev-bf91add4a0feb7a8624a1f6b3fd4d6dbe9dce1bc.zip
op-kernel-dev-bf91add4a0feb7a8624a1f6b3fd4d6dbe9dce1bc.tar.gz
ARM: tegra: hook tegra_tear_down_cpu function in the PM suspend init function
The tegra_tear_down_cpu was used to cut off the CPU rail for various Tegra SoCs. Hooking it in the PM suspend init function and making the CPUidle driver more generic. Signed-off-by: Joseph Lo <josephl@nvidia.com> Signed-off-by: Stephen Warren <swarren@nvidia.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/mach-tegra/cpuidle-tegra20.c3
-rw-r--r--arch/arm/mach-tegra/cpuidle-tegra30.c3
-rw-r--r--arch/arm/mach-tegra/pm.c15
3 files changed, 15 insertions, 6 deletions
diff --git a/arch/arm/mach-tegra/cpuidle-tegra20.c b/arch/arm/mach-tegra/cpuidle-tegra20.c
index 0cdba8d..d6675130 100644
--- a/arch/arm/mach-tegra/cpuidle-tegra20.c
+++ b/arch/arm/mach-tegra/cpuidle-tegra20.c
@@ -214,8 +214,5 @@ static int tegra20_idle_lp2_coupled(struct cpuidle_device *dev,
int __init tegra20_cpuidle_init(void)
{
-#ifdef CONFIG_PM_SLEEP
- tegra_tear_down_cpu = tegra20_tear_down_cpu;
-#endif
return cpuidle_register(&tegra_idle_driver, cpu_possible_mask);
}
diff --git a/arch/arm/mach-tegra/cpuidle-tegra30.c b/arch/arm/mach-tegra/cpuidle-tegra30.c
index 3cf9aca..9d9f554 100644
--- a/arch/arm/mach-tegra/cpuidle-tegra30.c
+++ b/arch/arm/mach-tegra/cpuidle-tegra30.c
@@ -146,8 +146,5 @@ static int tegra30_idle_lp2(struct cpuidle_device *dev,
int __init tegra30_cpuidle_init(void)
{
-#ifdef CONFIG_PM_SLEEP
- tegra_tear_down_cpu = tegra30_tear_down_cpu;
-#endif
return cpuidle_register(&tegra_idle_driver, NULL);
}
diff --git a/arch/arm/mach-tegra/pm.c b/arch/arm/mach-tegra/pm.c
index 45cf52c..5e6fb31b 100644
--- a/arch/arm/mach-tegra/pm.c
+++ b/arch/arm/mach-tegra/pm.c
@@ -44,6 +44,20 @@
static DEFINE_SPINLOCK(tegra_lp2_lock);
void (*tegra_tear_down_cpu)(void);
+static void tegra_tear_down_cpu_init(void)
+{
+ switch (tegra_chip_id) {
+ case TEGRA20:
+ if (IS_ENABLED(CONFIG_ARCH_TEGRA_2x_SOC))
+ tegra_tear_down_cpu = tegra20_tear_down_cpu;
+ break;
+ case TEGRA30:
+ if (IS_ENABLED(CONFIG_ARCH_TEGRA_3x_SOC))
+ tegra_tear_down_cpu = tegra30_tear_down_cpu;
+ break;
+ }
+}
+
/*
* restore_cpu_complex
*
@@ -224,6 +238,7 @@ void __init tegra_init_suspend(void)
if (tegra_pmc_get_suspend_mode() == TEGRA_SUSPEND_NONE)
return;
+ tegra_tear_down_cpu_init();
tegra_pmc_suspend_init();
suspend_set_ops(&tegra_suspend_ops);
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