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; }