Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * Copyright (C) 1992, 1998-2006 Linus Torvalds, Ingo Molnar
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  * Copyright (C) 2005-2006, Thomas Gleixner, Russell King
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  * This file contains the dummy interrupt chip implementation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #include <linux/irq.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/export.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include "internals.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)  * What should we do if we get a hw irq event on an illegal vector?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)  * Each architecture has to answer this themself.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) static void ack_bad(struct irq_data *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	struct irq_desc *desc = irq_data_to_desc(data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	print_irq_desc(data->irq, desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	ack_bad_irq(data->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)  * NOP functions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) static void noop(struct irq_data *data) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) static unsigned int noop_ret(struct irq_data *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)  * Generic no controller implementation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) struct irq_chip no_irq_chip = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	.name		= "none",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 	.irq_startup	= noop_ret,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	.irq_shutdown	= noop,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 	.irq_enable	= noop,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 	.irq_disable	= noop,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 	.irq_ack	= ack_bad,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 	.flags		= IRQCHIP_SKIP_SET_WAKE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)  * Generic dummy implementation which can be used for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)  * real dumb interrupt sources
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) struct irq_chip dummy_irq_chip = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 	.name		= "dummy",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 	.irq_startup	= noop_ret,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 	.irq_shutdown	= noop,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 	.irq_enable	= noop,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 	.irq_disable	= noop,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 	.irq_ack	= noop,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 	.irq_mask	= noop,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 	.irq_unmask	= noop,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 	.flags		= IRQCHIP_SKIP_SET_WAKE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) EXPORT_SYMBOL_GPL(dummy_irq_chip);