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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 * sdca_device_desc - short descriptor for an SDCA Function
21 * @adr: ACPI address (used for SDCA register access)
22 * @type: Function topology type
23 * @name: human-readable string
24 */
25struct sdca_function_desc {
26 const char *name;
27 u32 type;
28 u8 adr;
29};
30
31/**
32 * sdca_device_data - structure containing all SDCA related information
33 * @sdca_interface_revision: value read from _DSD property, mainly to check
34 * for changes between silicon versions
35 * @num_functions: total number of supported SDCA functions. Invalid/unsupported
36 * functions will be skipped.
37 * @sdca_func: array of function descriptors
38 */
39struct sdca_device_data {
40 u32 interface_revision;
41 int num_functions;
42 struct sdca_function_desc sdca_func[SDCA_MAX_FUNCTION_COUNT];
43};
44
45enum sdca_quirk {
46 SDCA_QUIRKS_RT712_VB,
47};
48
49#if IS_ENABLED(CONFIG_ACPI) && IS_ENABLED(CONFIG_SND_SOC_SDCA)
50
51void sdca_lookup_functions(struct sdw_slave *slave);
52void sdca_lookup_interface_revision(struct sdw_slave *slave);
53bool sdca_device_quirk_match(struct sdw_slave *slave, enum sdca_quirk quirk);
54
55#else
56
57static inline void sdca_lookup_functions(struct sdw_slave *slave) {}
58static inline void sdca_lookup_interface_revision(struct sdw_slave *slave) {}
59static inline bool sdca_device_quirk_match(struct sdw_slave *slave, enum sdca_quirk quirk)
60{
61 return false;
62}
63#endif
64
65#endif