[PATCH 2/4] ARM: tegra: hook tegra_tear_down_cpu function in the PM suspend init function
STALE4868d
From: Joseph Lo <hidden>
Date: 2013-06-03 11:17:45
Also in:
linux-arm-kernel
Subsystem:
arm port, the rest · Maintainers:
Russell King, Linus Torvalds
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 <redacted> --- arch/arm/mach-tegra/cpuidle-tegra20.c | 3 --- arch/arm/mach-tegra/cpuidle-tegra30.c | 3 --- arch/arm/mach-tegra/pm.c | 9 +++++++++ 3 files changed, 9 insertions(+), 6 deletions(-)
diff --git a/arch/arm/mach-tegra/cpuidle-tegra20.c b/arch/arm/mach-tegra/cpuidle-tegra20.c
index 0cdba8d..d667513 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..779dbb4 100644
--- a/arch/arm/mach-tegra/pm.c
+++ b/arch/arm/mach-tegra/pm.c@@ -44,6 +44,14 @@ static DEFINE_SPINLOCK(tegra_lp2_lock); void (*tegra_tear_down_cpu)(void); +static void tegra_tear_down_cpu_init(void) +{ + if (IS_ENABLED(CONFIG_ARCH_TEGRA_2x_SOC) && tegra_chip_id == TEGRA20) + tegra_tear_down_cpu = tegra20_tear_down_cpu; + if (IS_ENABLED(CONFIG_ARCH_TEGRA_3x_SOC) && tegra_chip_id == TEGRA30) + tegra_tear_down_cpu = tegra30_tear_down_cpu; +} + /* * restore_cpu_complex *
@@ -224,6 +232,7 @@ 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);
--
1.8.3