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     €КЙѓ‚ИїЖ 
E    /* 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_INTERRUPTS_H__
#define __SDCA_INTERRUPTS_H__

#include <linux/interrupt.h>
#include <linux/mutex.h>
#include <linux/regmap.h>

struct device;
struct snd_soc_component;
struct sdca_function_data;

#define SDCA_MAX_INTERRUPTS 31 /* the last bit is reserved for future extensions */

/**
 * struct sdca_interrupt - contains information about a single SDCA interrupt
 * @name: The name of the interrupt.
 * @component: Pointer to the ASoC component owns the interrupt.
 * @function: Pointer to the Function that the interrupt is associated with.
 * @entity: Pointer to the Entity that the interrupt is associated with.
 * @control: Pointer to the Control that the interrupt is associated with.
 * @priv: Pointer to private data for use by the handler.
 * @externally_requested: Internal flag used to check if a client driver has
 * already requested the interrupt, for custom handling, allowing the core to
 * skip handling this interrupt.
 */
struct sdca_interrupt {
	const char *name;

	struct snd_soc_component *component;
	struct sdca_function_data *function;
	struct sdca_entity *entity;
	struct sdca_control *control;

	void *priv;

	bool externally_requested;
};

/**
 * struct sdca_interrupt_info - contains top-level SDCA interrupt information
 * @irq_chip: regmap irq chip structure.
 * @irq_data: regmap irq chip data structure.
 * @irqs: Array of data for each individual IRQ.
 * @irq_lock: Protects access to the list of sdca_interrupt structures.
 */
struct sdca_interrupt_info {
	struct regmap_irq_chip irq_chip;
	struct regmap_irq_chip_data *irq_data;

	struct sdca_interrupt irqs[SDCA_MAX_INTERRUPTS];

	struct mutex irq_lock; /* Protect irqs list across functions */
};

int sdca_irq_request(struct device *dev, struct sdca_interrupt_info *interrupt_info,
		     int sdca_irq, const char *name, irq_handler_t handler,
		     void *data);
int sdca_irq_data_populate(struct snd_soc_component *component,
			   struct sdca_function_data *function,
			   struct sdca_entity *entity,
			   struct sdca_control *control,
			   struct sdca_interrupt *interrupt);
int sdca_irq_populate(struct sdca_function_data *function,
		      struct snd_soc_component *component,
		      struct sdca_interrupt_info *info);
struct sdca_interrupt_info *sdca_irq_allocate(struct device *dev,
					      struct regmap *regmap, int irq);

#endif
     €КЙ„N>пИїЖ 9i    #ifndef LLC_PDU_H
#define LLC_PDU_H
/*
 * Copyright (c) 1997 by Procom Technology,Inc.
 * 		 2001-2003 by Arnaldo Carvalho de Melo <acme@conectiva.com.br>
 *
 * This program can be redistributed or modified under the terms of the
 * GNU General Public License as published by the Free Software Foundation.
 * This program is distributed without any warranty or implied warranty
 * of merchantability or fitness for a particular purpose.
 *
 * See the GNU General Public License for more details.
 */

#include <linux/if_ether.h>

/* Lengths of frame formats */
#define LLC_PDU_LEN_I		4       /* header and 2 control bytes */
#define LLC_PDU_LEN_S		4
#define LLC_PDU_LEN_U		3       /* header and 1 control byte */
/* header and 1 control byte and XID info */
#define LLC_PDU_LEN_U_XID	(LLC_PDU_LEN_U + sizeof(struct llc_xid_info))
/* Known SAP addresses */
#define LLC_GLOBAL_SAP	0xFF
#define LLC_NULL_SAP	0x00	/* not network-layer visible */
#define LLC_MGMT_INDIV	0x02	/* station LLC mgmt indiv addr */
#define LLC_MGMT_GRP	0x03	/* station LLC mgmt group addr */
#define LLC_RDE_SAP	0xA6	/* route ... */

/* SAP field bit masks */
#define LLC_ISO_RESERVED_SAP	0x02
#define LLC_SAP_GROUP_DSAP	0x01
#define LLC_SAP_RESP_SSAP	0x01

/* Group/individual DSAP indicator is DSAP field */
#define LLC_PDU_GROUP_DSAP_MASK    0x01
#define LLC_PDU_IS_GROUP_DSAP(pdu)      \
	((pdu->dsap & LLC_PDU_GROUP_DSAP_MAS