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/* SPDX-License-Identifier: GPL-2.0 */
/*
* The MIPI SDCA specification is available for public downloads at
* https://www.mipi.org/mipi-sdca-v1-0-download
*
* Copyright (C) 2025 Cirrus Logic, Inc. and
* Cirrus Logic International Semiconductor Ltd.
*/
#ifndef __SDCA_FDL_H__
#define __SDCA_FDL_H__
#include <linux/completion.h>
#include <linux/workqueue.h>
struct device;
struct regmap;
struct sdca_fdl_set;
struct sdca_function_data;
struct sdca_interrupt;
struct sdca_interrupt_info;
/**
* struct fdl_state - FDL state structure to keep data between interrupts
* @begin: Completion indicating the start of an FDL download cycle.
* @done: Completion indicating the end of an FDL download cycle.
* @timeout: Delayed work used for timing out UMP transactions.
* @lock: Mutex to protect between the timeout work and IRQ handlers.
* @interrupt: Pointer to the interrupt struct to which this FDL is attached.
* @set: Pointer to the FDL set currently being downloaded.
* @file_index: Index of the current file being processed.
*/
struct fdl_state {
struct completion begin;
struct completion done;
struct delayed_work timeout;
struct mutex lock;
struct sdca_interrupt *interrupt;
struct sdca_fdl_set *set;
int file_index;
};
#define SDCA_CTL_XU_FDLH_COMPLETE 0
#define SDCA_CTL_XU_FDLH_MORE_FILES SDCA_CTL_XU_FDLH_SET_IN_PROGRESS
#define SDCA_CTL_XU_FDLH_FILE_AVAILABLE (SDCA_CTL_XU_FDLH_TRANSFERRED_FILE | \
SDCA_CTL_XU_FDLH_SET_IN_PROGRESS)
#define SDCA_CTL_XU_FDLH_MASK (SDCA_CTL_XU_FDLH_TRANSFERRED_CHUNK | \
SDCA_CTL_XU_FDLH_TRANSFERRED_FILE | \
SDCA_CTL_XU_FDLH_SET_IN_PROGRESS | \
SDCA_CTL_XU_FDLH_RESET_ACK | \
SDCA_CTL_XU_FDLH_REQ_ABORT)
#define SDCA_CTL_XU_FDLD_COMPLETE 0
#define SDCA_CTL_XU_FDLD_FILE_OK (SDCA_CTL_XU_FDLH_TRANSFERRED_FILE | \
SDCA_CTL_XU_FDLH_SET_IN_PROGRESS | \
SDCA_CTL_XU_FDLD_ACK_TRANSFER | \
SDCA_CTL_XU_FDLD_NEEDS_SET)
#define SDCA_CTL_XU_FDLD_MORE_FILES_OK (SDCA_CTL_XU_FDLH_SET_IN_PROGRESS | \
SDCA_CTL_XU_FDLD_ACK_TRANSFER | \
SDCA_CTL_XU_FDLD_NEEDS_SET)
#define SDCA_CTL_XU_FDLD_MASK (SDCA_CTL_XU_FDLD_REQ_RESET | \
SDCA_CTL_XU_FDLD_REQ_ABORT | \
SDCA_CTL_XU_FDLD_ACK_TRANSFER | \
SDCA_CTL_XU_FDLD_NEEDS_SET)
#if IS_ENABLED(CONFIG_SND_SOC_SDCA_FDL)
int sdca_fdl_alloc_state(struct sdca_interrupt *interrupt);
int sdca_fdl_process(struct sdca_interrupt *interrupt);
int sdca_fdl_sync(struct device *dev, struct sdca_function_data *function,
struct sdca_interrupt_info *info);
int sdca_reset_function(struct device *dev, struct sdca_function_data *function,
struct regmap *regmap);
#else
static inline int sdca_fdl_alloc_state(struct sdca_interrupt *interrupt)
{
return 0;
}
static inline int sdca_fdl_process(struct sdca_interrupt *interrupt)
{
return 0;
}
static inline int sdca_fdl_sync(struct device *dev,
struct sdca_function_data *function,
struct sdca_interrupt_info *info)
{
return 0;
}
static inline int sdca_reset_function(struct device *dev,
struct sdca_function_data *function,
struct regmap *regmap)
{
return 0;
}
#endif // CONFIG_SND_SOC_SDCA_FDL
#endif // __SDCA_FDL_H__
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