aboutsummaryrefslogtreecommitdiffstats
path: root/target/linux/ramips/patches-3.14/0025-MIPS-ralink-allow-loading-irq-registers-from-the-dev.patch
diff options
context:
space:
mode:
Diffstat (limited to 'target/linux/ramips/patches-3.14/0025-MIPS-ralink-allow-loading-irq-registers-from-the-dev.patch')
-rw-r--r--target/linux/ramips/patches-3.14/0025-MIPS-ralink-allow-loading-irq-registers-from-the-dev.patch80
1 files changed, 80 insertions, 0 deletions
diff --git a/target/linux/ramips/patches-3.14/0025-MIPS-ralink-allow-loading-irq-registers-from-the-dev.patch b/target/linux/ramips/patches-3.14/0025-MIPS-ralink-allow-loading-irq-registers-from-the-dev.patch
new file mode 100644
index 0000000000..3a114d0699
--- /dev/null
+++ b/target/linux/ramips/patches-3.14/0025-MIPS-ralink-allow-loading-irq-registers-from-the-dev.patch
@@ -0,0 +1,80 @@
+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(-)
+
+diff --git a/arch/mips/ralink/irq.c b/arch/mips/ralink/irq.c
+index 781b3d1..82c3146 100644
+--- 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 device_node *node,
+ 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");
+--
+1.7.10.4
+