| 1 | |
| 2 | * Copyright (C) 2012 Thomas Petazzoni
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| 3 | *
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| 4 | * Thomas Petazzoni <[email protected]>
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| 5 | *
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| 6 | * This file is licensed under the terms of the GNU General Public
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| 7 | * License version 2. This program is licensed "as is" without any
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| 8 | * warranty of any kind, whether express or implied.
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| 9 |
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| 10 |
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| 11 | #ifndef _LINUX_IRQCHIP_H
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| 12 | #define _LINUX_IRQCHIP_H
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| 13 |
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| 14 | #include <linux/acpi.h>
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| 15 | #include <linux/module.h>
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| 16 | #include <linux/of.h>
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| 17 | #include <linux/of_irq.h>
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| 18 | #include <linux/platform_device.h>
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| 19 |
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| 20 | typedef int (*platform_irq_probe_t)(struct platform_device *, struct device_node *);
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| 21 |
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| 22 |
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| 23 | extern of_irq_init_cb_t typecheck_irq_init_cb;
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| 24 | extern platform_irq_probe_t typecheck_irq_probe;
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| 25 |
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| 26 | #define typecheck_irq_init_cb(fn) \
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| 27 | (__typecheck(typecheck_irq_init_cb, &fn) ? fn : fn)
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| 28 |
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| 29 | #define typecheck_irq_probe(fn) \
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| 30 | (__typecheck(typecheck_irq_probe, &fn) ? fn : fn)
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| 31 |
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| 32 | |
| 33 | * This macro must be used by the different irqchip drivers to declare
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| 34 | * the association between their DT compatible string and their
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| 35 | * initialization function.
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| 36 | *
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| 37 | * @name: name that must be unique across all IRQCHIP_DECLARE of the
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| 38 | * same file.
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| 39 | * @compat: compatible string of the irqchip driver
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| 40 | * @fn: initialization function
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| 41 |
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| 42 | #define IRQCHIP_DECLARE(name, compat, fn) \
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| 43 | OF_DECLARE_2(irqchip, name, compat, typecheck_irq_init_cb(fn))
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| 44 |
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| 45 | extern int platform_irqchip_probe(struct platform_device *pdev);
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| 46 |
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| 47 | #define IRQCHIP_PLATFORM_DRIVER_BEGIN(drv_name) \
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| 48 | static const struct of_device_id drv_name##_irqchip_match_table[] = {
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| 49 |
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| 50 | #define IRQCHIP_MATCH(compat, fn) { .compatible = compat, \
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| 51 | .data = typecheck_irq_probe(fn), },
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| 52 |
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| 53 |
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| 54 | #define IRQCHIP_PLATFORM_DRIVER_END(drv_name, ...) \
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| 55 | {}, \
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| 56 | }; \
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| 57 | MODULE_DEVICE_TABLE(of, drv_name##_irqchip_match_table); \
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| 58 | static struct platform_driver drv_name##_driver = { \
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| 59 | .probe = IS_ENABLED(CONFIG_IRQCHIP) ? \
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| 60 | platform_irqchip_probe : NULL, \
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| 61 | .driver = { \
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| 62 | .name = #drv_name, \
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| 63 | .owner = THIS_MODULE, \
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| 64 | .of_match_table = drv_name##_irqchip_match_table, \
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| 65 | .suppress_bind_attrs = true, \
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| 66 | __VA_ARGS__ \
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| 67 | }, \
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| 68 | }; \
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| 69 | builtin_platform_driver(drv_name##_driver)
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| 70 |
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| 71 | |
| 72 | * This macro must be used by the different irqchip drivers to declare
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| 73 | * the association between their version and their initialization function.
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| 74 | *
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| 75 | * @name: name that must be unique across all IRQCHIP_ACPI_DECLARE of the
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| 76 | * same file.
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| 77 | * @subtable: Subtable to be identified in MADT
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| 78 | * @validate: Function to be called on that subtable to check its validity.
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| 79 | * Can be NULL.
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| 80 | * @data: data to be checked by the validate function.
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| 81 | * @fn: initialization function
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| 82 |
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| 83 | #define IRQCHIP_ACPI_DECLARE(name, subtable, validate, data, fn) \
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| 84 | ACPI_DECLARE_SUBTABLE_PROBE_ENTRY(irqchip, name, \
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| 85 | ACPI_SIG_MADT, subtable, \
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| 86 | validate, data, fn)
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| 87 |
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| 88 | #ifdef CONFIG_IRQCHIP
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| 89 | void irqchip_init(void);
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| 90 | #else
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| 91 | static inline void irqchip_init(void) {}
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| 92 | #endif
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| 93 |
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| 94 | #endif
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