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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788/* SPDX-License-Identifier: GPL-2.0-only *//* * SCPI Message Protocol driver header * * Copyright (C) 2014 ARM Ltd. */
#ifndef _LINUX_SCPI_PROTOCOL_H#define _LINUX_SCPI_PROTOCOL_H
#include <linux/types.h>
struct scpi_opp { u32 freq; u32 m_volt;} __packed;
struct scpi_dvfs_info { unsigned int count; unsigned int latency; /* in nanoseconds */ struct scpi_opp *opps;};
enum scpi_sensor_class { TEMPERATURE, VOLTAGE, CURRENT, POWER, ENERGY,};
struct scpi_sensor_info { u16 sensor_id; u8 class; u8 trigger_type; char name[20];} __packed;
/** * struct scpi_ops - represents the various operations provided * by SCP through SCPI message protocol * @get_version: returns the major and minor revision on the SCPI * message protocol * @clk_get_range: gets clock range limit(min - max in Hz) * @clk_get_val: gets clock value(in Hz) * @clk_set_val: sets the clock value, setting to 0 will disable the * clock (if supported) * @dvfs_get_idx: gets the Operating Point of the given power domain. * OPP is an index to the list return by @dvfs_get_info * @dvfs_set_idx: sets the Operating Point of the given power domain. * OPP is an index to the list return by @dvfs_get_info * @dvfs_get_info: returns the DVFS capabilities of the given power * domain. It includes the OPP list and the latency information * @device_domain_id: gets the scpi domain id for a given device * @get_transition_latency: gets the DVFS transition latency for a given device * @add_opps_to_device: adds all the OPPs for a given device * @sensor_get_capability: get the list of capabilities for the sensors * @sensor_get_info: get the information of the specified sensor * @sensor_get_value: gets the current value of the sensor * @device_get_power_state: gets the power state of a power domain * @device_set_power_state: sets the power state of a power domain */struct scpi_ops { u32 (*get_version)(void); int (*clk_get_range)(u16, unsigned long *, unsigned long *); unsigned long (*clk_get_val)(u16); int (*clk_set_val)(u16, unsigned long); int (*dvfs_get_idx)(u8); int (*dvfs_set_idx)(u8, u8); struct scpi_dvfs_info *(*dvfs_get_info)(u8); int (*device_domain_id)(struct device *); int (*get_transition_latency)(struct device *); int (*add_opps_to_device)(struct device *); int (*sensor_get_capability)(u16 *sensors); int (*sensor_get_info)(u16 sensor_id, struct scpi_sensor_info *); int (*sensor_get_value)(u16, u64 *); int (*device_get_power_state)(u16); int (*device_set_power_state)(u16, u8);};
#if IS_REACHABLE(CONFIG_ARM_SCPI_PROTOCOL)struct scpi_ops *get_scpi_ops(void);#elsestatic inline struct scpi_ops *get_scpi_ops(void) { return NULL; }#endif
#endif /* _LINUX_SCPI_PROTOCOL_H */