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
14 static 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
19 static inline u32 avs_mach_ssp_port(struct snd_soc_acpi_mach *mach)
20 {
21 return __ffs(mach->mach_params.i2s_link_mask);
22 }
23
24 static 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
31 static 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
38 static 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
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