utils.h

 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(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(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, *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