| /* Copyright (c) 2012-2013, 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. |
| */ |
| |
| #ifndef __KRAIT_REGULATOR_H__ |
| #define __KRAIT_REGULATOR_H__ |
| |
| #define KRAIT_REGULATOR_DRIVER_NAME "krait-power-regulator" |
| |
| /** |
| * krait_power_init - driver initialization function |
| * |
| * This function registers the krait-power-regulator platform driver. This |
| * should be called from appropriate initialization code. Returns 0 on |
| * success and error on failure. |
| */ |
| |
| #ifdef CONFIG_ARCH_MSM8974 |
| int __init krait_power_init(void); |
| void secondary_cpu_hs_init(void *base_ptr); |
| |
| /** |
| * krait_power_mdd_enable - function to turn on/off MDD. Turning off MDD |
| * turns off badngap reference for LDO. If |
| * a core is running on a LDO, requests to |
| * turn off MDD will not be honoured |
| * @on: boolean to indicate whether to turn MDD on/off |
| * |
| * CONTEXT: Can be called in interrupt context, only when the core |
| * is about to go to idle, this guarantees that there are no |
| * frequency changes on that cpu happening. Note if going from off |
| * to on mode there will be settling delays |
| * |
| * RETURNS: -EINVAL if MDD cannot be turned off |
| */ |
| int krait_power_mdd_enable(int cpu_num, bool on); |
| #else |
| static inline int __init krait_power_init(void) |
| { |
| return -ENOSYS; |
| } |
| |
| static inline void secondary_cpu_hs_init(void *base_ptr) {} |
| static inline int krait_power_mdd_enable(int cpu_num, bool on) |
| { |
| return -EINVAL; |
| } |
| #endif |
| |
| #endif |