1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright(c) 2023 Intel Corporation. All rights reserved.
4 *
5 * Authors: Cezary Rojewski <cezary.rojewski@intel.com>
6 *          Amadeusz Slawinski <amadeuszx.slawinski@linux.intel.com>
7 */
8
9#ifndef __SOUND_SOC_INTEL_AVS_UTILS_H
10#define __SOUND_SOC_INTEL_AVS_UTILS_H
11
12#include <sound/soc-acpi.h>
13
14static inline bool avs_mach_singular_ssp(struct snd_soc_acpi_mach *mach)
15{
16	return hweight_long(mach->mach_params.i2s_link_mask) == 1;
17}
18
19static inline u32 avs_mach_ssp_port(struct snd_soc_acpi_mach *mach)
20{
21	return __ffs(mach->mach_params.i2s_link_mask);
22}
23
24static inline bool avs_mach_singular_tdm(struct snd_soc_acpi_mach *mach, u32 port)
25{
26	unsigned long *tdms = mach->pdata;
27
28	return !tdms || (hweight_long(tdms[port]) == 1);
29}
30
31static inline u32 avs_mach_ssp_tdm(struct snd_soc_acpi_mach *mach, u32 port)
32{
33	unsigned long *tdms = mach->pdata;
34
35	return tdms ? __ffs(tdms[port]) : 0;
36}
37
38static inline int avs_mach_get_ssp_tdm(struct device *dev, struct snd_soc_acpi_mach *mach,
39				       int *ssp_port, int *tdm_slot)
40{
41	int port;
42
43	if (!avs_mach_singular_ssp(mach)) {
44		dev_err(dev, "Invalid SSP configuration\n");
45		return -EINVAL;
46	}
47	port = avs_mach_ssp_port(mach);
48
49	if (!avs_mach_singular_tdm(mach, port)) {
50		dev_err(dev, "Invalid TDM configuration\n");
51		return -EINVAL;
52	}
53	*ssp_port = port;
54	*tdm_slot = avs_mach_ssp_tdm(mach, *ssp_port);
55
56	return 0;
57}
58
59/*
60 * Macro to easily generate format strings
61 */
62#define AVS_STRING_FMT(prefix, suffix, ssp, tdm) \
63	(tdm) ? prefix "%d:%d" suffix : prefix "%d" suffix, (ssp), (tdm)
64
65#endif
66