diff options
| author | Bharat Nihalani <bnihalani@nvidia.com> | 2011-10-19 18:54:11 +0530 |
|---|---|---|
| committer | Simone Willett <swillett@nvidia.com> | 2011-10-25 13:20:10 -0700 |
| commit | 40fdf3442dbe00f5b38e59b8948f229d1b6aeb78 (patch) | |
| tree | 8df2dbc6687dae9be8de6c706494bd9472dd6bbd | |
| parent | 80c58a1366e9b1874beacb791aabe5ae6c20b963 (diff) | |
Revert "ARM: tegra: power: Update Tegra3 LP2 time prediction"
This reverts commit 47450edc2d22b5561c9aebcf09ea7179d8162c18.
Bug 889103
Change-Id: If9b0755835b400b1d926f5a0fcb29afcc58530e0
Reviewed-on: http://git-master/r/59116
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
Tested-by: Bharat Nihalani <bnihalani@nvidia.com>
| -rw-r--r-- | arch/arm/mach-tegra/cpuidle-t3.c | 12 | ||||
| -rw-r--r-- | arch/arm/mach-tegra/localtimer.c | 4 | ||||
| -rw-r--r-- | arch/arm/mach-tegra/power.h | 1 |
3 files changed, 2 insertions, 15 deletions
diff --git a/arch/arm/mach-tegra/cpuidle-t3.c b/arch/arm/mach-tegra/cpuidle-t3.c index 5d8bb1903aa5..f45ae3e7fc9d 100644 --- a/arch/arm/mach-tegra/cpuidle-t3.c +++ b/arch/arm/mach-tegra/cpuidle-t3.c @@ -267,8 +267,6 @@ void tegra_idle_enter_lp2_cpu_0(struct cpuidle_device *dev, void tegra_idle_enter_lp2_cpu_n(struct cpuidle_device *dev, struct cpuidle_state *state) { - u32 twd_ctrl; - u32 twd_cnt; s64 request; s64 sleep_time; ktime_t enter; @@ -277,15 +275,7 @@ void tegra_idle_enter_lp2_cpu_n(struct cpuidle_device *dev, if (need_resched()) return; - request = 0; - twd_ctrl = readl(twd_base + TWD_TIMER_CONTROL); - - if ((twd_ctrl & TWD_TIMER_CONTROL_ENABLE) && - (twd_ctrl & TWD_TIMER_CONTROL_IT_ENABLE)) { - twd_cnt = readl(twd_base + TWD_TIMER_COUNTER); - request = twd_cnt / TWD_MHZ; - } - + request = ktime_to_us(tick_nohz_get_sleep_length()); if (request < tegra_lp2_exit_latency) { /* * Not enough time left to enter LP2 diff --git a/arch/arm/mach-tegra/localtimer.c b/arch/arm/mach-tegra/localtimer.c index 09d63343eddf..ead217b90eea 100644 --- a/arch/arm/mach-tegra/localtimer.c +++ b/arch/arm/mach-tegra/localtimer.c @@ -15,8 +15,6 @@ #include <asm/smp_twd.h> #include <asm/localtimer.h> -#include "power.h" - /* * Setup the local clock events for a CPU. */ @@ -26,6 +24,6 @@ void __cpuinit local_timer_setup(struct clock_event_device *evt) #ifdef CONFIG_ARCH_TEGRA_2x_SOC twd_timer_setup_scalable(evt, 2500000, 4); #else - twd_timer_setup_scalable(evt, TWD_MHZ * 1000000, 2); + twd_timer_setup_scalable(evt, 4000000, 2); #endif } diff --git a/arch/arm/mach-tegra/power.h b/arch/arm/mach-tegra/power.h index 3b1b9dcc1a67..5e462aceef50 100644 --- a/arch/arm/mach-tegra/power.h +++ b/arch/arm/mach-tegra/power.h @@ -167,7 +167,6 @@ static inline bool tegra_lp2_is_allowed(struct cpuidle_device *dev, #define INSTRUMENT_CLUSTER_SWITCH 1 /* Should be zero for shipping code */ #define DEBUG_CLUSTER_SWITCH 1 /* Should be zero for shipping code */ #define PARAMETERIZE_CLUSTER_SWITCH 1 /* Should be zero for shipping code */ -#define TWD_MHZ 4 /* Local TWD timers rate */ int tegra_cluster_control(unsigned int us, unsigned int flags); void tegra_cluster_switch_prolog(unsigned int flags); void tegra_cluster_switch_epilog(unsigned int flags); |