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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/sound/soc/intel/avs/utils.h
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/* SPDX-License-Identifier: GPL-2.0-only */

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/*

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 * Copyright(c) 2023 Intel Corporation

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 *

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 * Authors: Cezary Rojewski <[email protected]>

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 *          Amadeusz Slawinski <[email protected]>

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 */

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#ifndef __SOUND_SOC_INTEL_AVS_UTILS_H

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#define __SOUND_SOC_INTEL_AVS_UTILS_H

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#include <sound/soc-acpi.h>

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extern bool obsolete_card_names;

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struct avs_mach_pdata {

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	struct hda_codec *codec;

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	unsigned long *tdms;

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	char *codec_name; /* DMIC only */

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	bool obsolete_card_names;

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};

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static inline bool avs_mach_singular_ssp(struct snd_soc_acpi_mach *mach)

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{

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	return hweight_long(mach->mach_params.i2s_link_mask) == 1;

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}

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static inline u32 avs_mach_ssp_port(struct snd_soc_acpi_mach *mach)

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{

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	return __ffs(mach->mach_params.i2s_link_mask);

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}

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static inline bool avs_mach_singular_tdm(struct snd_soc_acpi_mach *mach, u32 port)

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{

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	struct avs_mach_pdata *pdata = mach->pdata;

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	unsigned long *tdms = pdata->tdms;

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	return !tdms || (hweight_long(tdms[port]) == 1);

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}

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static inline u32 avs_mach_ssp_tdm(struct snd_soc_acpi_mach *mach, u32 port)

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{

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	struct avs_mach_pdata *pdata = mach->pdata;

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	unsigned long *tdms = pdata->tdms;

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	return tdms ? __ffs(tdms[port]) : 0;

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}

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static inline int avs_mach_get_ssp_tdm(struct device *dev, struct snd_soc_acpi_mach *mach,

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				       int *ssp_port, int *tdm_slot)

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{

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	int port;

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	if (!avs_mach_singular_ssp(mach)) {

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		dev_err(dev, "Invalid SSP configuration\n");

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		return -EINVAL;

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	}

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	port = avs_mach_ssp_port(mach);

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	if (!avs_mach_singular_tdm(mach, port)) {

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		dev_err(dev, "Invalid TDM configuration\n");

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		return -EINVAL;

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	}

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	*ssp_port = port;

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	*tdm_slot = avs_mach_ssp_tdm(mach, *ssp_port);

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	return 0;

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}

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/*

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 * Macro to easily generate format strings

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 */

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#define AVS_STRING_FMT(prefix, suffix, ssp, tdm) \

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	(tdm) ? prefix "%d:%d" suffix : prefix "%d" suffix, (ssp), (tdm)

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#endif

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