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1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * SCPI Message Protocol driver header
5 * Copyright (C) 2014 ARM Ltd.
7 #include <linux/types.h>
14 struct scpi_dvfs_info
{
16 unsigned int latency
; /* in nanoseconds */
17 struct scpi_opp
*opps
;
20 enum scpi_sensor_class
{
28 struct scpi_sensor_info
{
36 * struct scpi_ops - represents the various operations provided
37 * by SCP through SCPI message protocol
38 * @get_version: returns the major and minor revision on the SCPI
40 * @clk_get_range: gets clock range limit(min - max in Hz)
41 * @clk_get_val: gets clock value(in Hz)
42 * @clk_set_val: sets the clock value, setting to 0 will disable the
43 * clock (if supported)
44 * @dvfs_get_idx: gets the Operating Point of the given power domain.
45 * OPP is an index to the list return by @dvfs_get_info
46 * @dvfs_set_idx: sets the Operating Point of the given power domain.
47 * OPP is an index to the list return by @dvfs_get_info
48 * @dvfs_get_info: returns the DVFS capabilities of the given power
49 * domain. It includes the OPP list and the latency information
52 u32 (*get_version
)(void);
53 int (*clk_get_range
)(u16
, unsigned long *, unsigned long *);
54 unsigned long (*clk_get_val
)(u16
);
55 int (*clk_set_val
)(u16
, unsigned long);
56 int (*dvfs_get_idx
)(u8
);
57 int (*dvfs_set_idx
)(u8
, u8
);
58 struct scpi_dvfs_info
*(*dvfs_get_info
)(u8
);
59 int (*device_domain_id
)(struct device
*);
60 int (*get_transition_latency
)(struct device
*);
61 int (*add_opps_to_device
)(struct device
*);
62 int (*sensor_get_capability
)(u16
*sensors
);
63 int (*sensor_get_info
)(u16 sensor_id
, struct scpi_sensor_info
*);
64 int (*sensor_get_value
)(u16
, u64
*);
65 int (*device_get_power_state
)(u16
);
66 int (*device_set_power_state
)(u16
, u8
);
69 #if IS_REACHABLE(CONFIG_ARM_SCPI_PROTOCOL)
70 struct scpi_ops
*get_scpi_ops(void);
72 static inline struct scpi_ops
*get_scpi_ops(void) { return NULL
; }