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Several of the UMP transactions in the FDL process should timeout if the device does not respond within a certain time, add handling into the UMP helpers and the FDL code to handle this. Reviewed-by: Bard Liao <yung-chuan.liao@linux.intel.com> Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com> Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.dev> Link: https://patch.msgid.link/20251020155512.353774-18-ckeepax@opensource.cirrus.com Signed-off-by: Mark Brown <broonie@kernel.org>
76 lines
2.6 KiB
C
76 lines
2.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* The MIPI SDCA specification is available for public downloads at
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* https://www.mipi.org/mipi-sdca-v1-0-download
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*
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* Copyright (C) 2025 Cirrus Logic, Inc. and
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* Cirrus Logic International Semiconductor Ltd.
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*/
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#ifndef __SDCA_FDL_H__
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#define __SDCA_FDL_H__
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#include <linux/completion.h>
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#include <linux/workqueue.h>
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struct device;
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struct regmap;
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struct sdca_fdl_set;
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struct sdca_function_data;
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struct sdca_interrupt;
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struct sdca_interrupt_info;
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/**
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* struct fdl_state - FDL state structure to keep data between interrupts
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* @begin: Completion indicating the start of an FDL download cycle.
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* @done: Completion indicating the end of an FDL download cycle.
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* @timeout: Delayed work used for timing out UMP transactions.
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* @lock: Mutex to protect between the timeout work and IRQ handlers.
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* @interrupt: Pointer to the interrupt struct to which this FDL is attached.
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* @set: Pointer to the FDL set currently being downloaded.
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* @file_index: Index of the current file being processed.
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*/
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struct fdl_state {
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struct completion begin;
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struct completion done;
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struct delayed_work timeout;
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struct mutex lock;
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struct sdca_interrupt *interrupt;
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struct sdca_fdl_set *set;
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int file_index;
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};
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#define SDCA_CTL_XU_FDLH_COMPLETE 0
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#define SDCA_CTL_XU_FDLH_MORE_FILES SDCA_CTL_XU_FDLH_SET_IN_PROGRESS
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#define SDCA_CTL_XU_FDLH_FILE_AVAILABLE (SDCA_CTL_XU_FDLH_TRANSFERRED_FILE | \
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SDCA_CTL_XU_FDLH_SET_IN_PROGRESS)
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#define SDCA_CTL_XU_FDLH_MASK (SDCA_CTL_XU_FDLH_TRANSFERRED_CHUNK | \
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SDCA_CTL_XU_FDLH_TRANSFERRED_FILE | \
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SDCA_CTL_XU_FDLH_SET_IN_PROGRESS | \
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SDCA_CTL_XU_FDLH_RESET_ACK | \
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SDCA_CTL_XU_FDLH_REQ_ABORT)
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#define SDCA_CTL_XU_FDLD_COMPLETE 0
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#define SDCA_CTL_XU_FDLD_FILE_OK (SDCA_CTL_XU_FDLH_TRANSFERRED_FILE | \
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SDCA_CTL_XU_FDLH_SET_IN_PROGRESS | \
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SDCA_CTL_XU_FDLD_ACK_TRANSFER | \
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SDCA_CTL_XU_FDLD_NEEDS_SET)
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#define SDCA_CTL_XU_FDLD_MORE_FILES_OK (SDCA_CTL_XU_FDLH_SET_IN_PROGRESS | \
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SDCA_CTL_XU_FDLD_ACK_TRANSFER | \
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SDCA_CTL_XU_FDLD_NEEDS_SET)
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#define SDCA_CTL_XU_FDLD_MASK (SDCA_CTL_XU_FDLD_REQ_RESET | \
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SDCA_CTL_XU_FDLD_REQ_ABORT | \
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SDCA_CTL_XU_FDLD_ACK_TRANSFER | \
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SDCA_CTL_XU_FDLD_NEEDS_SET)
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int sdca_fdl_alloc_state(struct sdca_interrupt *interrupt);
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int sdca_fdl_process(struct sdca_interrupt *interrupt);
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int sdca_fdl_sync(struct device *dev, struct sdca_function_data *function,
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struct sdca_interrupt_info *info);
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int sdca_reset_function(struct device *dev, struct sdca_function_data *function,
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struct regmap *regmap);
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#endif // __SDCA_FDL_H__
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