[PATCH v1] ARM: tegra: cpuidle: Handle tick broadcasting within cpuidle core on Tegra20/30

[Dmitry Osipenko]

Tegra20/30 drivers do not handle the tick_broadcast_enter() error,
let's just move out the broadcasting to the CPUIDLE core by setting
the respective flag in the Tegra20/30 drivers.

Signed-off-by: Dmitry Osipenko <dig...@gmail.com>
---
 arch/arm/mach-tegra/cpuidle-tegra20.c | 11 ++---------
 arch/arm/mach-tegra/cpuidle-tegra30.c |  9 +--------
 2 files changed, 3 insertions(+), 17 deletions(-)

diff --git a/arch/arm/mach-tegra/cpuidle-tegra20.c 
b/arch/arm/mach-tegra/cpuidle-tegra20.c
index 3f24addd7972..6620d61b5ec5 100644
--- a/arch/arm/mach-tegra/cpuidle-tegra20.c
+++ b/arch/arm/mach-tegra/cpuidle-tegra20.c
@@ -61,7 +61,8 @@ static struct cpuidle_driver tegra_idle_driver = {
                        .exit_latency     = 5000,
                        .target_residency = 10000,
                        .power_usage      = 0,
-                       .flags            = CPUIDLE_FLAG_COUPLED,
+                       .flags            = CPUIDLE_FLAG_COUPLED |
+                                           CPUIDLE_FLAG_TIMER_STOP,
                        .name             = "powered-down",
                        .desc             = "CPU power gated",
                },
@@ -136,12 +137,8 @@ static bool tegra20_cpu_cluster_power_down(struct 
cpuidle_device *dev,
        if (tegra20_reset_cpu_1() || !tegra_cpu_rail_off_ready())
                return false;
 
-       tick_broadcast_enter();
-
        tegra_idle_lp2_last();
 
-       tick_broadcast_exit();
-
        if (cpu_online(1))
                tegra20_wake_cpu1_from_reset();
 
@@ -153,14 +150,10 @@ static bool tegra20_idle_enter_lp2_cpu_1(struct 
cpuidle_device *dev,
                                         struct cpuidle_driver *drv,
                                         int index)
 {
-       tick_broadcast_enter();
-
        cpu_suspend(0, tegra20_sleep_cpu_secondary_finish);
 
        tegra20_cpu_clear_resettable();
 
-       tick_broadcast_exit();
-
        return true;
 }
 #else
diff --git a/arch/arm/mach-tegra/cpuidle-tegra30.c 
b/arch/arm/mach-tegra/cpuidle-tegra30.c
index c1417361e10e..c8fe0447e3a9 100644
--- a/arch/arm/mach-tegra/cpuidle-tegra30.c
+++ b/arch/arm/mach-tegra/cpuidle-tegra30.c
@@ -56,6 +56,7 @@ static struct cpuidle_driver tegra_idle_driver = {
                        .exit_latency           = 2000,
                        .target_residency       = 2200,
                        .power_usage            = 0,
+                       .flags                  = CPUIDLE_FLAG_TIMER_STOP,
                        .name                   = "powered-down",
                        .desc                   = "CPU power gated",
                },
@@ -76,12 +77,8 @@ static bool tegra30_cpu_cluster_power_down(struct 
cpuidle_device *dev,
                return false;
        }
 
-       tick_broadcast_enter();
-
        tegra_idle_lp2_last();
 
-       tick_broadcast_exit();
-
        return true;
 }
 
@@ -90,14 +87,10 @@ static bool tegra30_cpu_core_power_down(struct 
cpuidle_device *dev,
                                        struct cpuidle_driver *drv,
                                        int index)
 {
-       tick_broadcast_enter();
-
        smp_wmb();
 
        cpu_suspend(0, tegra30_sleep_cpu_secondary_finish);
 
-       tick_broadcast_exit();
-
        return true;
 }
 #else
-- 
2.18.0