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1/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */
2/*
3 * The MIPI SDCA specification is available for public downloads at
4 * https://www.mipi.org/mipi-sdca-v1-0-download
5 *
6 * Copyright(c) 2024 Intel Corporation
7 */
8
9#ifndef __SDCA_H__
10#define __SDCA_H__
11
12#include <linux/types.h>
13#include <linux/kconfig.h>
14
15struct sdw_slave;
16
17#define SDCA_MAX_FUNCTION_COUNT 8
18
19/**
20 * struct sdca_function_desc - short descriptor for an SDCA Function
21 * @node: firmware node for the Function.
22 * @name: Human-readable string.
23 * @type: Function topology type.
24 * @adr: ACPI address (used for SDCA register access).
25 */
26struct sdca_function_desc {
27 struct fwnode_handle *node;
28 const char *name;
29 u32 type;
30 u8 adr;
31};
32
33/**
34 * struct sdca_device_data - structure containing all SDCA related information
35 * @interface_revision: Value read from _DSD property, mainly to check
36 * for changes between silicon versions.
37 * @num_functions: Total number of supported SDCA functions. Invalid/unsupported
38 * functions will be skipped.
39 * @function: Array of function descriptors.
40 */
41struct sdca_device_data {
42 u32 interface_revision;
43 int num_functions;
44 struct sdca_function_desc function[SDCA_MAX_FUNCTION_COUNT];
45};
46
47enum sdca_quirk {
48 SDCA_QUIRKS_RT712_VB,
49};
50
51#if IS_ENABLED(CONFIG_ACPI) && IS_ENABLED(CONFIG_SND_SOC_SDCA)
52
53void sdca_lookup_functions(struct sdw_slave *slave);
54void sdca_lookup_interface_revision(struct sdw_slave *slave);
55bool sdca_device_quirk_match(struct sdw_slave *slave, enum sdca_quirk quirk);
56
57#else
58
59static inline void sdca_lookup_functions(struct sdw_slave *slave) {}
60static inline void sdca_lookup_interface_revision(struct sdw_slave *slave) {}
61static inline bool sdca_device_quirk_match(struct sdw_slave *slave, enum sdca_quirk quirk)
62{
63 return false;
64}
65#endif
66
67#endif