| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
| 2 | /* |
| 3 | * Shared support for SH-X3 interrupt controllers. |
| 4 | * |
| 5 | * Copyright (C) 2009 - 2010 Paul Mundt |
| 6 | */ |
| 7 | #include <linux/irq.h> |
| 8 | #include <linux/io.h> |
| 9 | #include <linux/init.h> |
| 10 | |
| 11 | #define INTACK 0xfe4100b8 |
| 12 | #define INTACKCLR 0xfe4100bc |
| 13 | #define INTC_USERIMASK 0xfe411000 |
| 14 | |
| 15 | #ifdef CONFIG_INTC_BALANCING |
| 16 | unsigned int irq_lookup(unsigned int irq) |
| 17 | { |
| 18 | return __raw_readl(INTACK) & 1 ? irq : NO_IRQ_IGNORE; |
| 19 | } |
| 20 | |
| 21 | void irq_finish(unsigned int irq) |
| 22 | { |
| 23 | __raw_writel(irq2evt(irq), INTACKCLR); |
| 24 | } |
| 25 | #endif |
| 26 | |
| 27 | static int __init shx3_irq_setup(void) |
| 28 | { |
| 29 | return register_intc_userimask(INTC_USERIMASK); |
| 30 | } |
| 31 | arch_initcall(shx3_irq_setup); |