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1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * The MIPI SDCA specification is available for public downloads at
4 * https://www.mipi.org/mipi-sdca-v1-0-download
5 *
6 * Copyright (C) 2025 Cirrus Logic, Inc. and
7 * Cirrus Logic International Semiconductor Ltd.
8 */
9
10#ifndef __SDCA_INTERRUPTS_H__
11#define __SDCA_INTERRUPTS_H__
12
13#include <linux/interrupt.h>
14#include <linux/mutex.h>
15#include <linux/regmap.h>
16
17struct device;
18struct snd_soc_component;
19struct sdca_function_data;
20
21#define SDCA_MAX_INTERRUPTS 31 /* the last bit is reserved for future extensions */
22
23/**
24 * struct sdca_interrupt - contains information about a single SDCA interrupt
25 * @name: The name of the interrupt.
26 * @dev: Pointer to the Function device.
27 * @device_regmap: Pointer to the IRQ regmap.
28 * @function_regmap: Pointer to the SDCA Function regmap.
29 * @component: Pointer to the ASoC component owns the interrupt.
30 * @function: Pointer to the Function that the interrupt is associated with.
31 * @entity: Pointer to the Entity that the interrupt is associated with.
32 * @control: Pointer to the Control that the interrupt is associated with.
33 * @priv: Pointer to private data for use by the handler.
34 * @irq: IRQ number allocated to this interrupt, also used internally to track
35 * the IRQ being assigned.
36 */
37struct sdca_interrupt {
38 const char *name;
39
40 struct device *dev;
41 struct regmap *device_regmap;
42 struct regmap *function_regmap;
43 struct snd_soc_component *component;
44 struct sdca_function_data *function;
45 struct sdca_entity *entity;
46 struct sdca_control *control;
47
48 void *priv;
49
50 int irq;
51};
52
53/**
54 * struct sdca_interrupt_info - contains top-level SDCA interrupt information
55 * @irq_chip: regmap irq chip structure.
56 * @irq_data: regmap irq chip data structure.
57 * @irqs: Array of data for each individual IRQ.
58 * @irq_lock: Protects access to the list of sdca_interrupt structures.
59 */
60struct sdca_interrupt_info {
61 struct regmap_irq_chip irq_chip;
62 struct regmap_irq_chip_data *irq_data;
63
64 struct sdca_interrupt irqs[SDCA_MAX_INTERRUPTS];
65
66 struct mutex irq_lock; /* Protect irqs list across functions */
67};
68
69int sdca_irq_request(struct device *dev, struct sdca_interrupt_info *interrupt_info,
70 int sdca_irq, const char *name, irq_handler_t handler,
71 void *data);
72int sdca_irq_data_populate(struct device *dev, struct regmap *function_regmap,
73 struct snd_soc_component *component,
74 struct sdca_function_data *function,
75 struct sdca_entity *entity,
76 struct sdca_control *control,
77 struct sdca_interrupt *interrupt);
78int sdca_irq_populate_early(struct device *dev, struct regmap *function_regmap,
79 struct sdca_function_data *function,
80 struct sdca_interrupt_info *info);
81int sdca_irq_populate(struct sdca_function_data *function,
82 struct snd_soc_component *component,
83 struct sdca_interrupt_info *info);
84struct sdca_interrupt_info *sdca_irq_allocate(struct device *dev,
85 struct regmap *regmap, int irq);
86
87#endif