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/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */
/*
* The MIPI SDCA specification is available for public downloads at
* https://www.mipi.org/mipi-sdca-v1-0-download
*
* Copyright(c) 2024 Intel Corporation
*/
#ifndef __SDCA_H__
#define __SDCA_H__
#include <linux/types.h>
#include <linux/kconfig.h>
struct acpi_table_swft;
struct fwnode_handle;
struct sdw_slave;
struct sdca_dev;
#define SDCA_MAX_FUNCTION_COUNT 8
/**
* struct sdca_function_desc - short descriptor for an SDCA Function
* @node: firmware node for the Function.
* @func_dev: pointer to SDCA function device.
* @name: Human-readable string.
* @type: Function topology type.
* @adr: ACPI address (used for SDCA register access).
*/
struct sdca_function_desc {
struct fwnode_handle *node;
struct sdca_dev *func_dev;
const char *name;
u32 type;
u8 adr;
};
/**
* struct sdca_device_data - structure containing all SDCA related information
* @interface_revision: Value read from _DSD property, mainly to check
* for changes between silicon versions.
* @num_functions: Total number of supported SDCA functions. Invalid/unsupported
* functions will be skipped.
* @function: Array of function descriptors.
* @swft: Pointer to the SWFT table, if available.
*/
struct sdca_device_data {
u32 interface_revision;
int num_functions;
struct sdca_function_desc function[SDCA_MAX_FUNCTION_COUNT];
struct acpi_table_swft *swft;
};
enum sdca_quirk {
SDCA_QUIRKS_RT712_VB,
SDCA_QUIRKS_SKIP_FUNC_TYPE_PATCHING,
};
#if IS_ENABLED(CONFIG_ACPI) && IS_ENABLED(CONFIG_SND_SOC_SDCA)
void sdca_lookup_functions(struct sdw_slave *slave);
void sdca_lookup_swft(struct sdw_slave *slave);
void sdca_lookup_interface_revision(struct sdw_slave *slave);
bool sdca_device_quirk_match(struct sdw_slave *slave, enum sdca_quirk quirk);
int sdca_dev_register_functions(struct sdw_slave *slave);
void sdca_dev_unregister_functions(struct sdw_slave *slave);
#else
static inline void sdca_lookup_functions(struct sdw_slave *slave) {}
static inline void sdca_lookup_swft(struct sdw_slave *slave) {}
static inline void sdca_lookup_interface_revision(struct sdw_slave *slave) {}
static inline bool sdca_device_quirk_match(struct sdw_slave *slave, enum sdca_quirk quirk)
{
return false;
}
static inline int sdca_dev_register_functions(struct sdw_slave *slave)
{
return 0;
}
static inline void sdca_dev_unregister_functions(struct sdw_slave *slave) {}
#endif
#endif
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