mirror of
https://github.com/LineageOS/android_kernel_samsung_msm8226.git
synced 2026-10-06 00:01:01 +02:00
Abhijeet Dharmapurikar
46a7ad3f1c
The PMIC 8841 v2 that comes with msm8974 v2 is capable of doing phase switching on ganged regulators. Enable this feature for v2. Change-Id: I21826f4cf7be332f5ab7621325fa6cbe6aa2ea95 Signed-off-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>
60 lines
1.9 KiB
C
60 lines
1.9 KiB
C
/* Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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* only version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef __KRAIT_REGULATOR_H__
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#define __KRAIT_REGULATOR_H__
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#define KRAIT_REGULATOR_DRIVER_NAME "krait-power-regulator"
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#define KRAIT_PDN_DRIVER_NAME "krait-pdn"
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/**
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* krait_power_init - driver initialization function
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*
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* This function registers the krait-power-regulator platform driver. This
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* should be called from appropriate initialization code. Returns 0 on
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* success and error on failure.
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*/
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#ifdef CONFIG_ARCH_MSM8974
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int __init krait_power_init(void);
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void secondary_cpu_hs_init(void *base_ptr);
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/**
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* krait_power_mdd_enable - function to turn on/off MDD. Turning off MDD
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* turns off badngap reference for LDO. If
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* a core is running on a LDO, requests to
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* turn off MDD will not be honoured
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* @on: boolean to indicate whether to turn MDD on/off
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*
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* CONTEXT: Can be called in interrupt context, only when the core
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* is about to go to idle, this guarantees that there are no
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* frequency changes on that cpu happening. Note if going from off
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* to on mode there will be settling delays
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*
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* RETURNS: -EINVAL if MDD cannot be turned off
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*/
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int krait_power_mdd_enable(int cpu_num, bool on);
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#else
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static inline int __init krait_power_init(void)
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{
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return -ENOSYS;
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}
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static inline void secondary_cpu_hs_init(void *base_ptr) {}
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static inline int krait_power_mdd_enable(int cpu_num, bool on)
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{
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return -EINVAL;
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}
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#endif
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#endif
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