1 // SPDX-License-Identifier: GPL-2.0-only
3  * Copyright(c) 2023-2024 Intel Corporation
28  * acpi_nhlt_get_gbl_table - Retrieve a pointer to the first NHLT table.
47  * acpi_nhlt_put_gbl_table - Release the global NHLT table.
56  * acpi_nhlt_endpoint_match - Verify if an endpoint matches criteria.
72 	       (link_type < 0 || ep->link_type == link_type) &&  in acpi_nhlt_endpoint_match()
73 	       (dev_type < 0 || ep->device_type == dev_type) &&  in acpi_nhlt_endpoint_match()
74 	       (bus_id < 0 || ep->virtual_bus_id == bus_id) &&  in acpi_nhlt_endpoint_match()
75 	       (dir < 0 || ep->direction == dir);  in acpi_nhlt_endpoint_match()
80  * acpi_nhlt_tb_find_endpoint - Search a NHLT table for an endpoint.
107  * acpi_nhlt_find_endpoint - Search all NHLT tables for an endpoint.
128  * acpi_nhlt_endpoint_find_fmtcfg - Search endpoint's formats configuration space
147 		wav = &fmt->format;  in acpi_nhlt_endpoint_find_fmtcfg()
149 		if (wav->valid_bits_per_sample == vbps &&  in acpi_nhlt_endpoint_find_fmtcfg()
150 		    wav->samples_per_sec == rate &&  in acpi_nhlt_endpoint_find_fmtcfg()
151 		    wav->bits_per_sample == bps &&  in acpi_nhlt_endpoint_find_fmtcfg()
152 		    wav->channel_count == ch)  in acpi_nhlt_endpoint_find_fmtcfg()
161  * acpi_nhlt_tb_find_fmtcfg - Search a NHLT table for a specific format.
201  * acpi_nhlt_find_fmtcfg - Search all NHLT tables for a specific format.
228 static bool acpi_nhlt_config_is_micdevice(struct acpi_nhlt_config *cfg)  in acpi_nhlt_config_is_micdevice()  argument
230 	return cfg->capabilities_size >= sizeof(struct acpi_nhlt_micdevice_config);  in acpi_nhlt_config_is_micdevice()
233 static bool acpi_nhlt_config_is_vendor_micdevice(struct acpi_nhlt_config *cfg)  in acpi_nhlt_config_is_vendor_micdevice()  argument
235 	struct acpi_nhlt_vendor_micdevice_config *devcfg = __acpi_nhlt_config_caps(cfg);  in acpi_nhlt_config_is_vendor_micdevice()
237 	return cfg->capabilities_size >= sizeof(*devcfg) &&  in acpi_nhlt_config_is_vendor_micdevice()
238 	       cfg->capabilities_size == struct_size(devcfg, mics, devcfg->mics_count);  in acpi_nhlt_config_is_vendor_micdevice()
242  * acpi_nhlt_endpoint_mic_count - Retrieve number of digital microphones for a PDM endpoint.
251 	struct acpi_nhlt_config *cfg;  in acpi_nhlt_endpoint_mic_count()  local
254 	if (!ep || ep->link_type != ACPI_NHLT_LINKTYPE_PDM)  in acpi_nhlt_endpoint_mic_count()
255 		return -EINVAL;  in acpi_nhlt_endpoint_mic_count()
259 		max_ch = max(fmt->format.channel_count, max_ch);  in acpi_nhlt_endpoint_mic_count()
261 	cfg = __acpi_nhlt_endpoint_config(ep);  in acpi_nhlt_endpoint_mic_count()
262 	devcfg = __acpi_nhlt_config_caps(cfg);  in acpi_nhlt_endpoint_mic_count()
264 	/* If @ep is not a mic array, fallback to channels count. */  in acpi_nhlt_endpoint_mic_count()
265 	if (!acpi_nhlt_config_is_micdevice(cfg) ||  in acpi_nhlt_endpoint_mic_count()
266 	    devcfg->gen.config_type != ACPI_NHLT_CONFIGTYPE_MICARRAY)  in acpi_nhlt_endpoint_mic_count()
269 	switch (devcfg->mic.array_type) {  in acpi_nhlt_endpoint_mic_count()
280 		if (!acpi_nhlt_config_is_vendor_micdevice(cfg))  in acpi_nhlt_endpoint_mic_count()
281 			return -EINVAL;  in acpi_nhlt_endpoint_mic_count()
282 		return devcfg->vendor_mic.mics_count;  in acpi_nhlt_endpoint_mic_count()
285 		pr_warn("undefined mic array type: %#x\n", devcfg->mic.array_type);  in acpi_nhlt_endpoint_mic_count()