diff options
Diffstat (limited to 'arch/powerpc/platforms/512x/mpc5121_ads_cpld.c')
| -rw-r--r-- | arch/powerpc/platforms/512x/mpc5121_ads_cpld.c | 45 |
1 files changed, 22 insertions, 23 deletions
diff --git a/arch/powerpc/platforms/512x/mpc5121_ads_cpld.c b/arch/powerpc/platforms/512x/mpc5121_ads_cpld.c index ca3a062ed1b9..2cf3c6237337 100644 --- a/arch/powerpc/platforms/512x/mpc5121_ads_cpld.c +++ b/arch/powerpc/platforms/512x/mpc5121_ads_cpld.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright (C) 2008 Freescale Semiconductor, Inc. All rights reserved. * @@ -5,11 +6,6 @@ * * Description: * MPC5121ADS CPLD irq handling - * - * This is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. */ #undef DEBUG @@ -18,7 +14,10 @@ #include <linux/interrupt.h> #include <linux/irq.h> #include <linux/io.h> -#include <asm/prom.h> +#include <linux/of_address.h> +#include <linux/of_irq.h> + +#include "mpc5121_ads.h" static struct device_node *cpld_pic_node; static struct irq_domain *cpld_pic_host; @@ -85,11 +84,10 @@ static struct irq_chip cpld_pic = { .irq_unmask = cpld_unmask_irq, }; -static int +static unsigned int cpld_pic_get_irq(int offset, u8 ignore, u8 __iomem *statusp, u8 __iomem *maskp) { - int cpld_irq; u8 status = in_8(statusp); u8 mask = in_8(maskp); @@ -97,33 +95,33 @@ cpld_pic_get_irq(int offset, u8 ignore, u8 __iomem *statusp, status |= (ignore | mask); if (status == 0xff) - return NO_IRQ; + return ~0; - cpld_irq = ffz(status) + offset; - - return irq_linear_revmap(cpld_pic_host, cpld_irq); + return ffz(status) + offset; } -static void -cpld_pic_cascade(unsigned int irq, struct irq_desc *desc) +static void cpld_pic_cascade(struct irq_desc *desc) { - irq = cpld_pic_get_irq(0, PCI_IGNORE, &cpld_regs->pci_status, + unsigned int hwirq; + + hwirq = cpld_pic_get_irq(0, PCI_IGNORE, &cpld_regs->pci_status, &cpld_regs->pci_mask); - if (irq != NO_IRQ) { - generic_handle_irq(irq); + if (hwirq != ~0) { + generic_handle_domain_irq(cpld_pic_host, hwirq); return; } - irq = cpld_pic_get_irq(8, MISC_IGNORE, &cpld_regs->misc_status, + hwirq = cpld_pic_get_irq(8, MISC_IGNORE, &cpld_regs->misc_status, &cpld_regs->misc_mask); - if (irq != NO_IRQ) { - generic_handle_irq(irq); + if (hwirq != ~0) { + generic_handle_domain_irq(cpld_pic_host, hwirq); return; } } static int -cpld_pic_host_match(struct irq_domain *h, struct device_node *node) +cpld_pic_host_match(struct irq_domain *h, struct device_node *node, + enum irq_domain_bus_token bus_token) { return cpld_pic_node == node; } @@ -175,7 +173,7 @@ mpc5121_ads_cpld_pic_init(void) goto end; cascade_irq = irq_of_parse_and_map(np, 0); - if (cascade_irq == NO_IRQ) + if (!cascade_irq) goto end; /* @@ -190,7 +188,8 @@ mpc5121_ads_cpld_pic_init(void) cpld_pic_node = of_node_get(np); - cpld_pic_host = irq_domain_add_linear(np, 16, &cpld_pic_host_ops, NULL); + cpld_pic_host = irq_domain_create_linear(of_fwnode_handle(np), 16, + &cpld_pic_host_ops, NULL); if (!cpld_pic_host) { printk(KERN_ERR "CPLD PIC: failed to allocate irq host!\n"); goto end; |