1 files changed, 150 insertions, 0 deletions

diff --git a/include/sound/intel-nhlt.h b/include/sound/intel-nhlt.h
new file mode 100644
index 000000000000..f657fd8fc0ad
--- /dev/null
+++ b/include/sound/intel-nhlt.h
@@ -0,0 +1,150 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ *  intel-nhlt.h - Intel HDA Platform NHLT header
+ *
+ *  Copyright (c) 2015-2019 Intel Corporation
+ */
+
+#ifndef __INTEL_NHLT_H__
+#define __INTEL_NHLT_H__
+
+#include <linux/acpi.h>
+
+#if IS_ENABLED(CONFIG_ACPI) && IS_ENABLED(CONFIG_SND_INTEL_NHLT)
+
+struct wav_fmt {
+        u16 fmt_tag;
+        u16 channels;
+        u32 samples_per_sec;
+        u32 avg_bytes_per_sec;
+        u16 block_align;
+        u16 bits_per_sample;
+        u16 cb_size;
+} __packed;
+
+struct wav_fmt_ext {
+        struct wav_fmt fmt;
+        union samples {
+                u16 valid_bits_per_sample;
+                u16 samples_per_block;
+                u16 reserved;
+        } sample;
+        u32 channel_mask;
+        u8 sub_fmt[16];
+} __packed;
+
+enum nhlt_link_type {
+        NHLT_LINK_HDA = 0,
+        NHLT_LINK_DSP = 1,
+        NHLT_LINK_DMIC = 2,
+        NHLT_LINK_SSP = 3,
+        NHLT_LINK_INVALID
+};
+
+enum nhlt_device_type {
+        NHLT_DEVICE_BT = 0,
+        NHLT_DEVICE_DMIC = 1,
+        NHLT_DEVICE_I2S = 4,
+        NHLT_DEVICE_INVALID
+};
+
+struct nhlt_specific_cfg {
+        u32 size;
+        u8 caps[0];
+} __packed;
+
+struct nhlt_fmt_cfg {
+        struct wav_fmt_ext fmt_ext;
+        struct nhlt_specific_cfg config;
+} __packed;
+
+struct nhlt_fmt {
+        u8 fmt_count;
+        struct nhlt_fmt_cfg fmt_config[0];
+} __packed;
+
+struct nhlt_endpoint {
+        u32  length;
+        u8   linktype;
+        u8   instance_id;
+        u16  vendor_id;
+        u16  device_id;
+        u16  revision_id;
+        u32  subsystem_id;
+        u8   device_type;
+        u8   direction;
+        u8   virtual_bus_id;
+        struct nhlt_specific_cfg config;
+} __packed;
+
+struct nhlt_acpi_table {
+        struct acpi_table_header header;
+        u8 endpoint_count;
+        struct nhlt_endpoint desc[0];
+} __packed;
+
+struct nhlt_resource_desc  {
+        u32 extra;
+        u16 flags;
+        u64 addr_spc_gra;
+        u64 min_addr;
+        u64 max_addr;
+        u64 addr_trans_offset;
+        u64 length;
+} __packed;
+
+#define MIC_ARRAY_2CH 2
+#define MIC_ARRAY_4CH 4
+
+struct nhlt_device_specific_config {
+        u8 virtual_slot;
+        u8 config_type;
+} __packed;
+
+struct nhlt_dmic_array_config {
+        struct nhlt_device_specific_config device_config;
+        u8 array_type;
+} __packed;
+
+struct nhlt_vendor_dmic_array_config {
+        struct nhlt_dmic_array_config dmic_config;
+        u8 nb_mics;
+        /* TODO add vendor mic config */
+} __packed;
+
+enum {
+        NHLT_MIC_ARRAY_2CH_SMALL = 0xa,
+        NHLT_MIC_ARRAY_2CH_BIG = 0xb,
+        NHLT_MIC_ARRAY_4CH_1ST_GEOM = 0xc,
+        NHLT_MIC_ARRAY_4CH_L_SHAPED = 0xd,
+        NHLT_MIC_ARRAY_4CH_2ND_GEOM = 0xe,
+        NHLT_MIC_ARRAY_VENDOR_DEFINED = 0xf,
+};
+
+struct nhlt_acpi_table *intel_nhlt_init(struct device *dev);
+
+void intel_nhlt_free(struct nhlt_acpi_table *addr);
+
+int intel_nhlt_get_dmic_geo(struct device *dev, struct nhlt_acpi_table *nhlt);
+
+#else
+
+struct nhlt_acpi_table;
+
+static inline struct nhlt_acpi_table *intel_nhlt_init(struct device *dev)
+{
+        return NULL;
+}
+
+static inline void intel_nhlt_free(struct nhlt_acpi_table *addr)
+{
+}
+
+static inline int intel_nhlt_get_dmic_geo(struct device *dev,
+                                          struct nhlt_acpi_table *nhlt)
+{
+        return 0;
+}
+#endif
+
+#endif