ARM: tegra: cpuidle: replace LP3 with ARM_CPUIDLE_WFI_STATE

The Tegra CPU idle LP3 state is doing ARM WFI only. So it's same with
the common ARM_CPUIDLE_WFI_STATE. Using it to replace LP3 now.

Signed-off-by: Joseph Lo <josephl@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>

1 files changed, 3 insertions, 39 deletions

diff --git a/arch/arm/mach-tegra/cpuidle.c b/arch/arm/mach-tegra/cpuidle.c
index 9a6f051b382e..4e0b07c7963c 100644
--- a/arch/arm/mach-tegra/cpuidle.c
+++ b/arch/arm/mach-tegra/cpuidle.c
@@ -23,58 +23,22 @@
 
 #include <linux/kernel.h>
 #include <linux/module.h>
-#include <linux/cpu.h>
 #include <linux/cpuidle.h>
-#include <linux/hrtimer.h>
 
-#include <asm/proc-fns.h>
-
-static int tegra_idle_enter_lp3(struct cpuidle_device *dev,
-                                struct cpuidle_driver *drv, int index);
+#include <asm/cpuidle.h>
 
 struct cpuidle_driver tegra_idle_driver = {
         .name = "tegra_idle",
         .owner = THIS_MODULE,
+        .en_core_tk_irqen = 1,
         .state_count = 1,
         .states = {
-                [0] = {
-                        .enter                  = tegra_idle_enter_lp3,
-                        .exit_latency           = 10,
-                        .target_residency       = 10,
-                        .power_usage            = 600,
-                        .flags                  = CPUIDLE_FLAG_TIME_VALID,
-                        .name                   = "LP3",
-                        .desc                   = "CPU flow-controlled",
-                },
+                [0] = ARM_CPUIDLE_WFI_STATE_PWR(600),
         },
 };
 
 static DEFINE_PER_CPU(struct cpuidle_device, tegra_idle_device);
 
-static int tegra_idle_enter_lp3(struct cpuidle_device *dev,
-        struct cpuidle_driver *drv, int index)
-{
-        ktime_t enter, exit;
-        s64 us;
-
-        local_irq_disable();
-        local_fiq_disable();
-
-        enter = ktime_get();
-
-        cpu_do_idle();
-
-        exit = ktime_sub(ktime_get(), enter);
-        us = ktime_to_us(exit);
-
-        local_fiq_enable();
-        local_irq_enable();
-
-        dev->last_residency = us;
-
-        return index;
-}
-
 static int __init tegra_cpuidle_init(void)
 {
         int ret;