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From b1cc9a15f6ead8dbd849257e42d69a5799fb7597 Mon Sep 17 00:00:00 2001
From: John Crispin <blogic@openwrt.org>
Date: Wed, 6 Aug 2014 18:24:36 +0200
Subject: [PATCH 25/57] MIPS: ralink: allow loading irq registers from the
devicetree
Signed-off-by: John Crispin <blogic@openwrt.org>
---
arch/mips/ralink/irq.c | 33 +++++++++++++++++++++++----------
1 file changed, 23 insertions(+), 10 deletions(-)
--- a/arch/mips/ralink/irq.c
+++ b/arch/mips/ralink/irq.c
@@ -20,14 +20,6 @@
#include "common.h"
-/* INTC register offsets */
-#define INTC_REG_STATUS0 0x00
-#define INTC_REG_STATUS1 0x04
-#define INTC_REG_TYPE 0x20
-#define INTC_REG_RAW_STATUS 0x30
-#define INTC_REG_ENABLE 0x34
-#define INTC_REG_DISABLE 0x38
-
#define INTC_INT_GLOBAL BIT(31)
#define RALINK_CPU_IRQ_INTC (MIPS_CPU_IRQ_BASE + 2)
@@ -44,16 +36,34 @@
#define RALINK_INTC_IRQ_PERFC (RALINK_INTC_IRQ_BASE + 9)
+enum rt_intc_regs_enum {
+ INTC_REG_STATUS0 = 0,
+ INTC_REG_STATUS1,
+ INTC_REG_TYPE,
+ INTC_REG_RAW_STATUS,
+ INTC_REG_ENABLE,
+ INTC_REG_DISABLE,
+};
+
+static u32 rt_intc_regs[] = {
+ [INTC_REG_STATUS0] = 0x00,
+ [INTC_REG_STATUS1] = 0x04,
+ [INTC_REG_TYPE] = 0x20,
+ [INTC_REG_RAW_STATUS] = 0x30,
+ [INTC_REG_ENABLE] = 0x34,
+ [INTC_REG_DISABLE] = 0x38,
+};
+
static void __iomem *rt_intc_membase;
static inline void rt_intc_w32(u32 val, unsigned reg)
{
- __raw_writel(val, rt_intc_membase + reg);
+ __raw_writel(val, rt_intc_membase + rt_intc_regs[reg]);
}
static inline u32 rt_intc_r32(unsigned reg)
{
- return __raw_readl(rt_intc_membase + reg);
+ return __raw_readl(rt_intc_membase + rt_intc_regs[reg]);
}
static void ralink_intc_irq_unmask(struct irq_data *d)
@@ -134,6 +144,9 @@ static int __init intc_of_init(struct de
struct irq_domain *domain;
int irq;
+ if (!of_property_read_u32_array(node, "ralink,intc-registers", rt_intc_regs, 6))
+ pr_info("intc: using register map from devicetree\n");
+
irq = irq_of_parse_and_map(node, 0);
if (!irq)
panic("Failed to get INTC IRQ");
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