| /* |
| * Copyright (C) 2014 Freescale Semiconductor, Inc. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| |
| #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); |
| } |