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81 lines
2.1 KiB
Diff
81 lines
2.1 KiB
Diff
From b1cc9a15f6ead8dbd849257e42d69a5799fb7597 Mon Sep 17 00:00:00 2001
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From: John Crispin <blogic@openwrt.org>
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Date: Wed, 6 Aug 2014 18:24:36 +0200
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Subject: [PATCH 25/57] MIPS: ralink: allow loading irq registers from the
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devicetree
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Signed-off-by: John Crispin <blogic@openwrt.org>
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---
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arch/mips/ralink/irq.c | 33 +++++++++++++++++++++++----------
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1 file changed, 23 insertions(+), 10 deletions(-)
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diff --git a/arch/mips/ralink/irq.c b/arch/mips/ralink/irq.c
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index 781b3d1..82c3146 100644
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--- a/arch/mips/ralink/irq.c
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+++ b/arch/mips/ralink/irq.c
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@@ -20,14 +20,6 @@
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#include "common.h"
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-/* INTC register offsets */
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-#define INTC_REG_STATUS0 0x00
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-#define INTC_REG_STATUS1 0x04
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-#define INTC_REG_TYPE 0x20
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-#define INTC_REG_RAW_STATUS 0x30
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-#define INTC_REG_ENABLE 0x34
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-#define INTC_REG_DISABLE 0x38
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-
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#define INTC_INT_GLOBAL BIT(31)
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#define RALINK_CPU_IRQ_INTC (MIPS_CPU_IRQ_BASE + 2)
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@@ -44,16 +36,34 @@
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#define RALINK_INTC_IRQ_PERFC (RALINK_INTC_IRQ_BASE + 9)
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+enum rt_intc_regs_enum {
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+ INTC_REG_STATUS0 = 0,
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+ INTC_REG_STATUS1,
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+ INTC_REG_TYPE,
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+ INTC_REG_RAW_STATUS,
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+ INTC_REG_ENABLE,
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+ INTC_REG_DISABLE,
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+};
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+
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+static u32 rt_intc_regs[] = {
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+ [INTC_REG_STATUS0] = 0x00,
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+ [INTC_REG_STATUS1] = 0x04,
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+ [INTC_REG_TYPE] = 0x20,
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+ [INTC_REG_RAW_STATUS] = 0x30,
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+ [INTC_REG_ENABLE] = 0x34,
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+ [INTC_REG_DISABLE] = 0x38,
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+};
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+
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static void __iomem *rt_intc_membase;
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static inline void rt_intc_w32(u32 val, unsigned reg)
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{
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- __raw_writel(val, rt_intc_membase + reg);
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+ __raw_writel(val, rt_intc_membase + rt_intc_regs[reg]);
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}
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static inline u32 rt_intc_r32(unsigned reg)
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{
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- return __raw_readl(rt_intc_membase + reg);
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+ return __raw_readl(rt_intc_membase + rt_intc_regs[reg]);
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}
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static void ralink_intc_irq_unmask(struct irq_data *d)
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@@ -134,6 +144,9 @@ static int __init intc_of_init(struct device_node *node,
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struct irq_domain *domain;
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int irq;
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+ if (!of_property_read_u32_array(node, "ralink,intc-registers", rt_intc_regs, 6))
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+ pr_info("intc: using register map from devicetree\n");
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+
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irq = irq_of_parse_and_map(node, 0);
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if (!irq)
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panic("Failed to get INTC IRQ");
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--
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1.7.10.4
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