1 files changed, 61 insertions, 0 deletions

diff --git a/arch/arm/mach-tegra/cpuidle-tegra114.c b/arch/arm/mach-tegra/cpuidle-tegra114.c
new file mode 100644
index 000000000000..0f4e8c483b34
--- /dev/null
+++ b/arch/arm/mach-tegra/cpuidle-tegra114.c
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2013, NVIDIA Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/cpuidle.h>
+
+#include <asm/cpuidle.h>
+
+static struct cpuidle_driver tegra_idle_driver = {
+        .name = "tegra_idle",
+        .owner = THIS_MODULE,
+        .en_core_tk_irqen = 1,
+        .state_count = 1,
+        .states = {
+                [0] = ARM_CPUIDLE_WFI_STATE_PWR(600),
+        },
+};
+
+static DEFINE_PER_CPU(struct cpuidle_device, tegra_idle_device);
+
+int __init tegra114_cpuidle_init(void)
+{
+        int ret;
+        unsigned int cpu;
+        struct cpuidle_device *dev;
+        struct cpuidle_driver *drv = &tegra_idle_driver;
+
+        ret = cpuidle_register_driver(&tegra_idle_driver);
+        if (ret) {
+                pr_err("CPUidle driver registration failed\n");
+                return ret;
+        }
+
+        for_each_possible_cpu(cpu) {
+                dev = &per_cpu(tegra_idle_device, cpu);
+                dev->cpu = cpu;
+
+                dev->state_count = drv->state_count;
+                ret = cpuidle_register_device(dev);
+                if (ret) {
+                        pr_err("CPU%u: CPUidle device registration failed\n",
+                                cpu);
+                        return ret;
+                }
+        }
+        return 0;
+}