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/*
* Copyright (C) 2007 Google, Inc.
* Copyright (c) 2009-2018, The Linux Foundation. All rights reserved.
* Author: San Mehat <san@android.com>
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* 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 __ARCH_ARM_MACH_MSM_PM_H
#define __ARCH_ARM_MACH_MSM_PM_H
#include <linux/types.h>
#include <linux/cpuidle.h>
#include <dt-bindings/msm/pm.h>
struct latency_level {
int affinity_level;
int reset_level;
const char *level_name;
};
#ifdef CONFIG_MSM_PM
s32 msm_cpuidle_get_deep_idle_latency(void);
/**
* lpm_get_latency() - API to get latency for a low power mode
* @latency_level: pointer to structure with below elements
* affinity_level: The level (CPU/L2/CCI etc.) for which the
* latency is required.
* LPM_AFF_LVL_CPU : CPU level
* LPM_AFF_LVL_L2 : L2 level
* LPM_AFF_LVL_CCI : CCI level
* reset_level: Can be passed "LPM_RESET_LVL_GDHS" for
* low power mode with control logic power collapse or
* "LPM_RESET_LVL_PC" for low power mode with control and
* memory logic power collapse or "LPM_RESET_LVL_RET" for
* retention mode.
* level_name: Pointer to the cluster name for which the latency
* is required or NULL if the minimum value out of all the
* clusters is to be returned. For CPU level, the name of the
* L2 cluster to be passed. For CCI it has no effect.
* @latency: address to get the latency value.
*
* latency value will be for the particular cluster or the minimum
* value out of all the clusters at the particular affinity_level
* and reset_level.
*
* Return: 0 for success; Error number for failure.
*/
int lpm_get_latency(struct latency_level *level, uint32_t *latency);
#else
static inline s32 msm_cpuidle_get_deep_idle_latency(void) { return 0; }
static inline int lpm_get_latency(struct latency_level *level,
uint32_t *latency)
{
return 0;
}
#endif
#endif /* __ARCH_ARM_MACH_MSM_PM_H */
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