81 lines
2 KiB
C
81 lines
2 KiB
C
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/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2020-2021, The Linux Foundation. All rights reserved.
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*/
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#ifndef _QCOM_DCVS_H
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#define _QCOM_DCVS_H
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#include <linux/kernel.h>
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#define QCOM_DCVS_WIDTH_PROP "qcom,bus-width"
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#define QCOM_DCVS_HW_PROP "qcom,dcvs-hw-type"
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#define QCOM_DCVS_PATH_PROP "qcom,dcvs-path-type"
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enum dcvs_hw_type {
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DCVS_DDR,
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DCVS_LLCC,
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DCVS_L3,
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DCVS_DDRQOS,
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DCVS_L3_1,
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NUM_DCVS_HW_TYPES
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};
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enum dcvs_path_type {
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DCVS_SLOW_PATH,
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DCVS_FAST_PATH,
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DCVS_PERCPU_PATH,
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NUM_DCVS_PATHS
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};
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struct dcvs_freq {
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u32 ib;
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u32 ab;
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enum dcvs_hw_type hw_type;
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};
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#if IS_ENABLED(CONFIG_QCOM_DCVS)
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int qcom_dcvs_register_voter(const char *name, enum dcvs_hw_type hw_type,
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enum dcvs_path_type path_type);
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int qcom_dcvs_unregister_voter(const char *name, enum dcvs_hw_type hw_type,
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enum dcvs_path_type path_type);
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int qcom_dcvs_update_votes(const char *name, struct dcvs_freq *votes,
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u32 update_mask, enum dcvs_path_type path);
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struct kobject *qcom_dcvs_kobject_get(enum dcvs_hw_type type);
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int qcom_dcvs_hw_minmax_get(enum dcvs_hw_type hw_type, u32 *min, u32 *max);
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struct device_node *qcom_dcvs_get_ddr_child_node(struct device_node *of_parent);
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#else
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static inline int qcom_dcvs_register_voter(const char *name,
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enum dcvs_hw_type hw_type, enum dcvs_path_type path_type)
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{
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return -ENODEV;
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}
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static inline int qcom_dcvs_unregister_voter(const char *name,
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enum dcvs_hw_type hw_type, enum dcvs_path_type path_type)
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{
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return -ENODEV;
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}
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static inline int qcom_dcvs_update_votes(const char *name,
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struct dcvs_freq *votes, u32 update_mask,
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enum dcvs_path_type path)
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{
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return -ENODEV;
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}
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static inline struct kobject *qcom_dcvs_kobject_get(enum dcvs_hw_type type)
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{
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return NULL;
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}
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static inline int qcom_dcvs_hw_minmax_get(enum dcvs_hw_type hw_type, u32 *min,
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u32 *max)
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{
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return -ENODEV;
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}
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static inline struct device_node *qcom_dcvs_get_ddr_child_node(
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struct device_node *of_parent)
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{
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return NULL;
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}
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#endif
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#endif /* _QCOM_DCVS_H */
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