From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- arch/arm/mach-orion5x/irq.c | 51 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100644 arch/arm/mach-orion5x/irq.c (limited to 'arch/arm/mach-orion5x/irq.c') diff --git a/arch/arm/mach-orion5x/irq.c b/arch/arm/mach-orion5x/irq.c new file mode 100644 index 000000000..e17727e53 --- /dev/null +++ b/arch/arm/mach-orion5x/irq.c @@ -0,0 +1,51 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * arch/arm/mach-orion5x/irq.c + * + * Core IRQ functions for Marvell Orion System On Chip + * + * Maintainer: Tzachi Perelstein + */ +#include +#include +#include +#include +#include +#include +#include +#include "bridge-regs.h" +#include "common.h" + +static int __initdata gpio0_irqs[4] = { + IRQ_ORION5X_GPIO_0_7, + IRQ_ORION5X_GPIO_8_15, + IRQ_ORION5X_GPIO_16_23, + IRQ_ORION5X_GPIO_24_31, +}; + +static asmlinkage void +__exception_irq_entry orion5x_legacy_handle_irq(struct pt_regs *regs) +{ + u32 stat; + + stat = readl_relaxed(MAIN_IRQ_CAUSE); + stat &= readl_relaxed(MAIN_IRQ_MASK); + if (stat) { + unsigned int hwirq = 1 + __fls(stat); + handle_IRQ(hwirq, regs); + return; + } +} + +void __init orion5x_init_irq(void) +{ + orion_irq_init(1, MAIN_IRQ_MASK); + + set_handle_irq(orion5x_legacy_handle_irq); + + /* + * Initialize gpiolib for GPIOs 0-31. + */ + orion_gpio_init(0, 32, GPIO_VIRT_BASE, 0, + IRQ_ORION5X_GPIO_START, gpio0_irqs); +} -- cgit v1.2.3