1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Copyright(c) 2023 Intel Corporation
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
14extern bool obsolete_card_names;
15
16struct avs_mach_pdata {
17 struct hda_codec *codec;
18 unsigned long *tdms;
19 char *codec_name; /* DMIC only */
20
21 bool obsolete_card_names;
22};
23
24static inline bool avs_mach_singular_ssp(struct snd_soc_acpi_mach *mach)
25{
26 return hweight_long(w: mach->mach_params.i2s_link_mask) == 1;
27}
28
29static inline u32 avs_mach_ssp_port(struct snd_soc_acpi_mach *mach)
30{
31 return __ffs(mach->mach_params.i2s_link_mask);
32}
33
34static inline bool avs_mach_singular_tdm(struct snd_soc_acpi_mach *mach, u32 port)
35{
36 struct avs_mach_pdata *pdata = mach->pdata;
37 unsigned long *tdms = pdata->tdms;
38
39 return !tdms || (hweight_long(w: tdms[port]) == 1);
40}
41
42static inline u32 avs_mach_ssp_tdm(struct snd_soc_acpi_mach *mach, u32 port)
43{
44 struct avs_mach_pdata *pdata = mach->pdata;
45 unsigned long *tdms = pdata->tdms;
46
47 return tdms ? __ffs(tdms[port]) : 0;
48}
49
50static inline int avs_mach_get_ssp_tdm(struct device *dev, struct snd_soc_acpi_mach *mach,
51 int *ssp_port, int *tdm_slot)
52{
53 int port;
54
55 if (!avs_mach_singular_ssp(mach)) {
56 dev_err(dev, "Invalid SSP configuration\n");
57 return -EINVAL;
58 }
59 port = avs_mach_ssp_port(mach);
60
61 if (!avs_mach_singular_tdm(mach, port)) {
62 dev_err(dev, "Invalid TDM configuration\n");
63 return -EINVAL;
64 }
65 *ssp_port = port;
66 *tdm_slot = avs_mach_ssp_tdm(mach, port: *ssp_port);
67
68 return 0;
69}
70
71/*
72 * Macro to easily generate format strings
73 */
74#define AVS_STRING_FMT(prefix, suffix, ssp, tdm) \
75 (tdm) ? prefix "%d:%d" suffix : prefix "%d" suffix, (ssp), (tdm)
76
77#endif
78

source code of linux/sound/soc/intel/avs/utils.h