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| // SPDX-License-Identifier: GPL-2.0-only
| /*
| * Copyright (C) 2014 Freescale Semiconductor, Inc.
| */
|
| #include <linux/cpuidle.h>
| #include <linux/module.h>
| #include <asm/cpuidle.h>
|
| #include "common.h"
| #include "cpuidle.h"
|
| static int imx6sl_enter_wait(struct cpuidle_device *dev,
| struct cpuidle_driver *drv, int index)
| {
| imx6_set_lpm(WAIT_UNCLOCKED);
| /*
| * Software workaround for ERR005311, see function
| * description for details.
| */
| imx6sl_set_wait_clk(true);
| cpu_do_idle();
| imx6sl_set_wait_clk(false);
| imx6_set_lpm(WAIT_CLOCKED);
|
| return index;
| }
|
| static struct cpuidle_driver imx6sl_cpuidle_driver = {
| .name = "imx6sl_cpuidle",
| .owner = THIS_MODULE,
| .states = {
| /* WFI */
| ARM_CPUIDLE_WFI_STATE,
| /* WAIT */
| {
| .exit_latency = 50,
| .target_residency = 75,
| .flags = CPUIDLE_FLAG_TIMER_STOP,
| .enter = imx6sl_enter_wait,
| .name = "WAIT",
| .desc = "Clock off",
| },
| },
| .state_count = 2,
| .safe_state_index = 0,
| };
|
| int __init imx6sl_cpuidle_init(void)
| {
| return cpuidle_register(&imx6sl_cpuidle_driver, NULL);
| }
|
|
