| /* Copyright (c) 2011, The Linux Foundation. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 and |
| * only version 2 as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that 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. |
| * |
| */ |
| |
| #include <linux/module.h> |
| #include <linux/moduleparam.h> |
| #include <linux/kernel.h> |
| #include <linux/init.h> |
| #include <linux/reboot.h> |
| #include <linux/io.h> |
| #include <linux/delay.h> |
| #include <linux/gpio.h> |
| |
| #define FEMTO_GPIO_PS_HOLD 161 |
| |
| void fsm_restart(char mode, const char *cmd) |
| { |
| pr_notice("Going down for restart now\n"); |
| msleep(3000); |
| |
| /* Configure FEMTO_GPIO_PS_HOLD as a general purpose output */ |
| if (gpio_tlmm_config(GPIO_CFG(FEMTO_GPIO_PS_HOLD, 0, |
| GPIO_CFG_OUTPUT, GPIO_CFG_NO_PULL, |
| GPIO_CFG_2MA), GPIO_CFG_ENABLE)) |
| pr_err("%s: gpio_tlmm_config (gpio=%d) failed\n", |
| __func__, FEMTO_GPIO_PS_HOLD); |
| |
| /* Now set it low to power cycle the entire board */ |
| gpio_set_value(FEMTO_GPIO_PS_HOLD, 0); |
| |
| msleep(10000); |
| pr_err("Restarting has failed\n"); |
| } |
