exynos-acpm-protocol.h

 1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * Copyright 2020 Samsung Electronics Co., Ltd.
 4 * Copyright 2020 Google LLC.
 5 * Copyright 2024 Linaro Ltd.
 6 */
 7
 8#ifndef __EXYNOS_ACPM_PROTOCOL_H
 9#define __EXYNOS_ACPM_PROTOCOL_H
10
11#include <linux/types.h>
12
13struct acpm_handle;
14struct device_node;
15
16struct acpm_dvfs_ops {
17	int (*set_rate)(const struct acpm_handle *handle,
18			unsigned int acpm_chan_id, unsigned int clk_id,
19			unsigned long rate);
20	unsigned long (*get_rate)(const struct acpm_handle *handle,
21				  unsigned int acpm_chan_id,
22				  unsigned int clk_id);
23};
24
25struct acpm_pmic_ops {
26	int (*read_reg)(const struct acpm_handle *handle,
27			unsigned int acpm_chan_id, u8 type, u8 reg, u8 chan,
28			u8 *buf);
29	int (*bulk_read)(const struct acpm_handle *handle,
30			 unsigned int acpm_chan_id, u8 type, u8 reg, u8 chan,
31			 u8 count, u8 *buf);
32	int (*write_reg)(const struct acpm_handle *handle,
33			 unsigned int acpm_chan_id, u8 type, u8 reg, u8 chan,
34			 u8 value);
35	int (*bulk_write)(const struct acpm_handle *handle,
36			  unsigned int acpm_chan_id, u8 type, u8 reg, u8 chan,
37			  u8 count, const u8 *buf);
38	int (*update_reg)(const struct acpm_handle *handle,
39			  unsigned int acpm_chan_id, u8 type, u8 reg, u8 chan,
40			  u8 value, u8 mask);
41};
42
43struct acpm_ops {
44	struct acpm_dvfs_ops dvfs_ops;
45	struct acpm_pmic_ops pmic_ops;
46};
47
48/**
49 * struct acpm_handle - Reference to an initialized protocol instance
50 * @ops:
51 */
52struct acpm_handle {
53	struct acpm_ops ops;
54};
55
56struct device;
57
58#if IS_ENABLED(CONFIG_EXYNOS_ACPM_PROTOCOL)
59const struct acpm_handle *devm_acpm_get_by_node(struct device *dev,
60						struct device_node *np);
61#else
62
63static inline const struct acpm_handle *devm_acpm_get_by_node(struct device *dev,
64							      struct device_node *np)
65{
66	return NULL;
67}
68#endif
69
70#endif /* __EXYNOS_ACPM_PROTOCOL_H */