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bmips: fix external interrupt controller

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- irq_domain_add_simple() can't be used on bmips since interrupts aren't
hardcoded with specific offsets for internal and external as opposed to
bcm63xx. This is needed to avoid collisions with other interrupts.
- remove unused bcm63xx-specific code.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
This commit is contained in:
Álvaro Fernández Rojas 2023-04-27 13:49:10 +02:00
parent e9f5b773d2
commit c3549b9319
1 changed files with 2 additions and 21 deletions

23
target/linux/bmips/patches-5.15/100-irqchip-add-support-for-bcm6345-style-external-inter.patch

@ -73,7 +73,7 @@ Signed-off-by: Jonas Gorski <jogo@openwrt.org>
obj-$(CONFIG_BCM7120_L2_IRQ) += irq-bcm7120-l2.o
--- /dev/null
+++ b/drivers/irqchip/irq-bcm6345-ext.c
@@ -0,0 +1,299 @@
@@ -0,0 +1,280 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
@ -94,14 +94,6 @@ Signed-off-by: Jonas Gorski <jogo@openwrt.org>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+
+#ifdef CONFIG_BCM63XX
+#include <asm/mach-bcm63xx/bcm63xx_irq.h>
+
+#define VIRQ_BASE IRQ_EXTERNAL_BASE
+#else
+#define VIRQ_BASE 0
+#endif
+
+#define MAX_IRQS 4
+
+#define EXTIRQ_CFG_SENSE 0
@ -271,7 +263,6 @@ Signed-off-by: Jonas Gorski <jogo@openwrt.org>
+{
+ struct intc_data *data;
+ unsigned int i;
+ int start = VIRQ_BASE;
+
+ data = kzalloc(sizeof(*data), GFP_KERNEL);
+ if (!data)
@ -296,17 +287,7 @@ Signed-off-by: Jonas Gorski <jogo@openwrt.org>
+ data->chip.irq_unmask = bcm6345_ext_intc_irq_unmask;
+ data->chip.irq_set_type = bcm6345_ext_intc_set_type;
+
+ /*
+ * If we have less than 4 irqs, this is the second controller on
+ * bcm63xx. So increase the VIRQ start to not overlap with the first
+ * one, but only do so if we actually use a non-zero start.
+ *
+ * This can be removed when bcm63xx has no legacy users anymore.
+ */
+ if (start && num_irqs < 4)
+ start += 4;
+
+ data->domain = irq_domain_add_simple(node, num_irqs, start,
+ data->domain = irq_domain_add_linear(node, num_irqs,
+ &bcm6345_ext_domain_ops, data);
+ if (!data->domain) {
+ kfree(data);