[linux-2.6-block.git] / sound / hda / intel-nhlt.c

// SPDX-License-Identifier: GPL-2.0-only
// Copyright (c) 2015-2019 Intel Corporation

#include <linux/acpi.h>
#include <sound/intel-nhlt.h>

struct nhlt_acpi_table *intel_nhlt_init(struct device *dev)
{
	struct nhlt_acpi_table *nhlt;
	acpi_status status;

	status = acpi_get_table(ACPI_SIG_NHLT, 0,
				(struct acpi_table_header **)&nhlt);
	if (ACPI_FAILURE(status)) {
		dev_warn(dev, "NHLT table not found\n");
		return NULL;
	}

	return nhlt;
}
EXPORT_SYMBOL_GPL(intel_nhlt_init);

void intel_nhlt_free(struct nhlt_acpi_table *nhlt)
{
	acpi_put_table((struct acpi_table_header *)nhlt);
}
EXPORT_SYMBOL_GPL(intel_nhlt_free);

int intel_nhlt_get_dmic_geo(struct device *dev, struct nhlt_acpi_table *nhlt)
{
	struct nhlt_endpoint *epnt;
	struct nhlt_dmic_array_config *cfg;
	struct nhlt_vendor_dmic_array_config *cfg_vendor;
	struct nhlt_fmt *fmt_configs;
	unsigned int dmic_geo = 0;
	u16 max_ch = 0;
	u8 i, j;

	if (!nhlt)
		return 0;

	for (j = 0, epnt = nhlt->desc; j < nhlt->endpoint_count; j++,
	     epnt = (struct nhlt_endpoint *)((u8 *)epnt + epnt->length)) {

		if (epnt->linktype != NHLT_LINK_DMIC)
			continue;

		cfg = (struct nhlt_dmic_array_config  *)(epnt->config.caps);
		fmt_configs = (struct nhlt_fmt *)(epnt->config.caps + epnt->config.size);

		/* find max number of channels based on format_configuration */
		if (fmt_configs->fmt_count) {
			dev_dbg(dev, "%s: found %d format definitions\n",
				__func__, fmt_configs->fmt_count);

			for (i = 0; i < fmt_configs->fmt_count; i++) {
				struct wav_fmt_ext *fmt_ext;

				fmt_ext = &fmt_configs->fmt_config[i].fmt_ext;

				if (fmt_ext->fmt.channels > max_ch)
					max_ch = fmt_ext->fmt.channels;
			}
			dev_dbg(dev, "%s: max channels found %d\n", __func__, max_ch);
		} else {
			dev_dbg(dev, "%s: No format information found\n", __func__);
		}

		if (cfg->device_config.config_type != NHLT_CONFIG_TYPE_MIC_ARRAY) {
			dmic_geo = max_ch;
		} else {
			switch (cfg->array_type) {
			case NHLT_MIC_ARRAY_2CH_SMALL:
			case NHLT_MIC_ARRAY_2CH_BIG:
				dmic_geo = MIC_ARRAY_2CH;
				break;

			case NHLT_MIC_ARRAY_4CH_1ST_GEOM:
			case NHLT_MIC_ARRAY_4CH_L_SHAPED:
			case NHLT_MIC_ARRAY_4CH_2ND_GEOM:
				dmic_geo = MIC_ARRAY_4CH;
				break;
			case NHLT_MIC_ARRAY_VENDOR_DEFINED:
				cfg_vendor = (struct nhlt_vendor_dmic_array_config *)cfg;
				dmic_geo = cfg_vendor->nb_mics;
				break;
			default:
				dev_warn(dev, "%s: undefined DMIC array_type 0x%0x\n",
					 __func__, cfg->array_type);
			}

			if (dmic_geo > 0) {
				dev_dbg(dev, "%s: Array with %d dmics\n", __func__, dmic_geo);
			}
			if (max_ch > dmic_geo) {
				dev_dbg(dev, "%s: max channels %d exceed dmic number %d\n",
					__func__, max_ch, dmic_geo);
			}
		}
	}

	dev_dbg(dev, "%s: dmic number %d max_ch %d\n",
		__func__, dmic_geo, max_ch);

	return dmic_geo;
}
EXPORT_SYMBOL_GPL(intel_nhlt_get_dmic_geo);
Commit	Line	Data
e149ca29	1	// SPDX-License-Identifier: GPL-2.0-only
303681f4 PLB	2	// Copyright (c) 2015-2019 Intel Corporation
	3
	4	#include <linux/acpi.h>
	5	#include <sound/intel-nhlt.h>
	6
303681f4 PLB	7	struct nhlt_acpi_table intel_nhlt_init(struct device dev)
303681f4 PLB	8	{
0d283287 CR	9	struct nhlt_acpi_table *nhlt;
0d283287 CR	10	acpi_status status;
303681f4	11
0d283287 CR	12	status = acpi_get_table(ACPI_SIG_NHLT, 0,
	13	(struct acpi_table_header **)&nhlt);
	14	if (ACPI_FAILURE(status)) {
	15	dev_warn(dev, "NHLT table not found\n");
303681f4 PLB	16	return NULL;
	17	}
	18
0d283287	19	return nhlt;
303681f4 PLB	20	}
	21	EXPORT_SYMBOL_GPL(intel_nhlt_init);
	22
	23	void intel_nhlt_free(struct nhlt_acpi_table *nhlt)
	24	{
0d283287	25	acpi_put_table((struct acpi_table_header *)nhlt);
303681f4 PLB	26	}
	27	EXPORT_SYMBOL_GPL(intel_nhlt_free);
	28
	29	int intel_nhlt_get_dmic_geo(struct device dev, struct nhlt_acpi_table nhlt)
	30	{
	31	struct nhlt_endpoint *epnt;
	32	struct nhlt_dmic_array_config *cfg;
7a33ea70	33	struct nhlt_vendor_dmic_array_config *cfg_vendor;
a864e8f1	34	struct nhlt_fmt *fmt_configs;
303681f4	35	unsigned int dmic_geo = 0;
a864e8f1 PLB	36	u16 max_ch = 0;
a864e8f1 PLB	37	u8 i, j;
303681f4 PLB	38
	39	if (!nhlt)
	40	return 0;
	41
a864e8f1 PLB	42	for (j = 0, epnt = nhlt->desc; j < nhlt->endpoint_count; j++,
a864e8f1 PLB	43	epnt = (struct nhlt_endpoint )((u8 )epnt + epnt->length)) {
303681f4	44
a864e8f1 PLB	45	if (epnt->linktype != NHLT_LINK_DMIC)
	46	continue;
	47
	48	cfg = (struct nhlt_dmic_array_config *)(epnt->config.caps);
	49	fmt_configs = (struct nhlt_fmt *)(epnt->config.caps + epnt->config.size);
	50
	51	/* find max number of channels based on format_configuration */
	52	if (fmt_configs->fmt_count) {
	53	dev_dbg(dev, "%s: found %d format definitions\n",
	54	__func__, fmt_configs->fmt_count);
	55
	56	for (i = 0; i < fmt_configs->fmt_count; i++) {
	57	struct wav_fmt_ext *fmt_ext;
	58
	59	fmt_ext = &fmt_configs->fmt_config[i].fmt_ext;
	60
	61	if (fmt_ext->fmt.channels > max_ch)
	62	max_ch = fmt_ext->fmt.channels;
	63	}
	64	dev_dbg(dev, "%s: max channels found %d\n", __func__, max_ch);
	65	} else {
	66	dev_dbg(dev, "%s: No format information found\n", __func__);
	67	}
	68
	69	if (cfg->device_config.config_type != NHLT_CONFIG_TYPE_MIC_ARRAY) {
	70	dmic_geo = max_ch;
	71	} else {
303681f4 PLB	72	switch (cfg->array_type) {
	73	case NHLT_MIC_ARRAY_2CH_SMALL:
	74	case NHLT_MIC_ARRAY_2CH_BIG:
	75	dmic_geo = MIC_ARRAY_2CH;
	76	break;
	77
	78	case NHLT_MIC_ARRAY_4CH_1ST_GEOM:
	79	case NHLT_MIC_ARRAY_4CH_L_SHAPED:
	80	case NHLT_MIC_ARRAY_4CH_2ND_GEOM:
	81	dmic_geo = MIC_ARRAY_4CH;
	82	break;
7a33ea70 PLB	83	case NHLT_MIC_ARRAY_VENDOR_DEFINED:
	84	cfg_vendor = (struct nhlt_vendor_dmic_array_config *)cfg;
	85	dmic_geo = cfg_vendor->nb_mics;
	86	break;
303681f4	87	default:
a864e8f1 PLB	88	dev_warn(dev, "%s: undefined DMIC array_type 0x%0x\n",
	89	__func__, cfg->array_type);
	90	}
	91
	92	if (dmic_geo > 0) {
	93	dev_dbg(dev, "%s: Array with %d dmics\n", __func__, dmic_geo);
	94	}
	95	if (max_ch > dmic_geo) {
	96	dev_dbg(dev, "%s: max channels %d exceed dmic number %d\n",
	97	__func__, max_ch, dmic_geo);
303681f4 PLB	98	}
303681f4 PLB	99	}
303681f4 PLB	100	}
303681f4 PLB	101
a864e8f1 PLB	102	dev_dbg(dev, "%s: dmic number %d max_ch %d\n",
	103	__func__, dmic_geo, max_ch);
	104
303681f4 PLB	105	return dmic_geo;
	106	}
	107	EXPORT_SYMBOL_GPL(intel_nhlt_get_dmic_geo);