109 lines
3 KiB
C
109 lines
3 KiB
C
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/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
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*/
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#ifndef __SOC_QCOM_CRM_H__
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#define __SOC_QCOM_CRM_H__
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#include <linux/platform_device.h>
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/**
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* enum crm_hw_drv_state: Progressive higher power states for the HW DRV request
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*
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* @CRM_PWR_STATE0: Power State0
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* @CRM_PWR_STATE1: Power State1
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* @CRM_PWR_STATE2: Power State2
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* @CRM_PWR_STATE3: Power State3
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* @CRM_PWR_STATE4: Power State4
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*/
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enum crm_hw_drv_state {
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CRM_PWR_STATE0,
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CRM_PWR_STATE1,
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CRM_PWR_STATE2,
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CRM_PWR_STATE3,
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CRM_PWR_STATE4,
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};
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/**
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* enum crm_sw_drv_state: Power states for the SW DRV request
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*
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* @CRM_ACTIVE_STATE: Active or AMC mode requests. Resource state
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* is aggregated immediately.
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* @CRM_SLEEP_STATE: State of the resource when the subsystem is
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* powered down. There is no client using the
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* resource actively.
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* @CRM_WAKE_STATE: Resume resource state to the value previously
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* requested before the subsystem was powered down.
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*/
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enum crm_sw_drv_state {
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CRM_ACTIVE_STATE,
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CRM_SLEEP_STATE,
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CRM_WAKE_STATE,
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};
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union power_state {
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enum crm_hw_drv_state hw;
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enum crm_sw_drv_state sw;
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};
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/**
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* enum crm_drv_type: CRM DRV type
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*
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* @CRM_HW_DRV: DRV is HW (HW Client)
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* @CRM_SW_DRV: DRV is SW (SW Client)
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*/
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enum crm_drv_type {
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CRM_HW_DRV,
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CRM_SW_DRV,
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};
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/**
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* struct crm_cmd: The message to be sent to CRM
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*
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* @pwr_state: The pwr_state for HW/SW DRV
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* @resource_idx: The index of the VCD OR ND to apply data
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* @data: The Clock Plan index for the VCDs voted by PERF_OL.
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* BW vote for the VCDs voted by BW.
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* @wait: Set by the client want if want to wait for the vote completion IRQ.
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* Applicable for only SW DRV client.
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* Don't care for HW DRV client.
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*/
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struct crm_cmd {
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union power_state pwr_state;
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u32 resource_idx;
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u32 data;
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bool wait;
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};
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#if IS_ENABLED(CONFIG_QCOM_CRM)
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int crm_write_perf_ol(const struct device *dev, enum crm_drv_type drv,
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u32 drv_id, const struct crm_cmd *cmd);
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int crm_write_bw_vote(const struct device *dev, enum crm_drv_type drv,
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u32 drv_id, const struct crm_cmd *cmd);
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int crm_write_pwr_states(const struct device *dev, u32 drv_id);
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const struct device *crm_get_device(const char *name);
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#else
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static inline int crm_write_perf_ol(const struct device *dev,
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enum crm_drv_type drv,
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u32 drv_id,
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const struct crm_cmd *cmd)
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{ return -ENODEV; }
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static inline int crm_write_bw_vote(const struct device *dev,
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enum crm_drv_type drv,
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u32 drv_id,
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const struct crm_cmd *cmd)
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{ return -ENODEV; }
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static inline int crm_write_pwr_states(const struct device *dev, u32 drv_id)
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{ return -ENODEV; }
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static inline const struct device *crm_get_device(const char *name)
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{ return ERR_PTR(-ENODEV); }
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#endif /* CONFIG_QCOM_CRM */
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#endif /* __SOC_QCOM_CRM_H__ */
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