linux/include/sound/sof/dai.h

/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
/*
 * This file is provided under a dual BSD/GPLv2 license.  When using or
 * redistributing this file, you may do so under either license.
 *
 * Copyright(c) 2018 Intel Corporation. All rights reserved.
 */

#ifndef __INCLUDE_SOUND_SOF_DAI_H__
#define __INCLUDE_SOUND_SOF_DAI_H__

#include <sound/sof/header.h>
#include <sound/sof/dai-intel.h>

/*
 * DAI Configuration.
 *
 * Each different DAI type will have it's own structure and IPC cmd.
 */

#define SOF_DAI_FMT_I2S		1 /**< I2S mode */
#define SOF_DAI_FMT_RIGHT_J	2 /**< Right Justified mode */
#define SOF_DAI_FMT_LEFT_J	3 /**< Left Justified mode */
#define SOF_DAI_FMT_DSP_A	4 /**< L data MSB after FRM LRC */
#define SOF_DAI_FMT_DSP_B	5 /**< L data MSB during FRM LRC */
#define SOF_DAI_FMT_PDM		6 /**< Pulse density modulation */

#define SOF_DAI_FMT_CONT	(1 << 4) /**< continuous clock */
#define SOF_DAI_FMT_GATED	(0 << 4) /**< clock is gated */

#define SOF_DAI_FMT_NB_NF	(0 << 8) /**< normal bit clock + frame */
#define SOF_DAI_FMT_NB_IF	(2 << 8) /**< normal BCLK + inv FRM */
#define SOF_DAI_FMT_IB_NF	(3 << 8) /**< invert BCLK + nor FRM */
#define SOF_DAI_FMT_IB_IF	(4 << 8) /**< invert BCLK + FRM */

#define SOF_DAI_FMT_CBM_CFM	(0 << 12) /**< codec clk & FRM master */
#define SOF_DAI_FMT_CBS_CFM	(2 << 12) /**< codec clk slave & FRM master */
#define SOF_DAI_FMT_CBM_CFS	(3 << 12) /**< codec clk master & frame slave */
#define SOF_DAI_FMT_CBS_CFS	(4 << 12) /**< codec clk & FRM slave */

#define SOF_DAI_FMT_FORMAT_MASK		0x000f
#define SOF_DAI_FMT_CLOCK_MASK		0x00f0
#define SOF_DAI_FMT_INV_MASK		0x0f00
#define SOF_DAI_FMT_MASTER_MASK		0xf000

/** \brief Types of DAI */
enum sof_ipc_dai_type {
	SOF_DAI_INTEL_NONE = 0,		/**< None */
	SOF_DAI_INTEL_SSP,		/**< Intel SSP */
	SOF_DAI_INTEL_DMIC,		/**< Intel DMIC */
	SOF_DAI_INTEL_HDA,		/**< Intel HD/A */
	SOF_DAI_INTEL_ALH,		/**< Intel ALH  */
	SOF_DAI_IMX_SAI,		/**< i.MX SAI */
	SOF_DAI_IMX_ESAI,		/**< i.MX ESAI */
};

/* general purpose DAI configuration */
struct sof_ipc_dai_config {
	struct sof_ipc_cmd_hdr hdr;
	uint32_t type;		/**< DAI type - enum sof_ipc_dai_type */
	uint32_t dai_index;	/**< index of this type dai */

	/* physical protocol and clocking */
	uint16_t format;	/**< SOF_DAI_FMT_ */
	uint16_t reserved16;	/**< alignment */

	/* reserved for future use */
	uint32_t reserved[8];

	/* HW specific data */
	union {
		struct sof_ipc_dai_ssp_params ssp;
		struct sof_ipc_dai_dmic_params dmic;
		struct sof_ipc_dai_hda_params hda;
		struct sof_ipc_dai_alh_params alh;
	};
} __packed;

#endif