From 742759eae6b58a172d8f79ff0938d1e25dc9abc5 Mon Sep 17 00:00:00 2001
From: Paul Mundt <lethal@linux-sh.org>
Date: Sat, 2 Oct 2010 19:43:40 +0900
Subject: [PATCH] sh: Handle pinmux for SH-X3 proto IRQ/IRL modes.
The SH-X3 proto CPU has all of the external IRQ and IRL pins muxed, make
sure that we're able to grab them before attempting to register their
respective IRQ controllers.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
---
arch/sh/Kconfig | 1 +
arch/sh/kernel/cpu/sh4a/setup-shx3.c | 24 ++++++++++++++++++++++++
2 files changed, 25 insertions(+)
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index e46b61d64c7d..803f0c1f29f9 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -466,6 +466,7 @@ config CPU_SUBTYPE_SHX3
select CPU_SH4A
select CPU_SHX3
select GENERIC_CLOCKEVENTS_BROADCAST if SMP
+ select ARCH_REQUIRE_GPIOLIB
# SH4AL-DSP Processor Support
diff --git a/arch/sh/kernel/cpu/sh4a/setup-shx3.c b/arch/sh/kernel/cpu/sh4a/setup-shx3.c
index 04a487445aa6..f159ea2cebc7 100644
--- a/arch/sh/kernel/cpu/sh4a/setup-shx3.c
+++ b/arch/sh/kernel/cpu/sh4a/setup-shx3.c
@@ -12,7 +12,9 @@
#include <linux/serial.h>
#include <linux/serial_sci.h>
#include <linux/io.h>
+#include <linux/gpio.h>
#include <linux/sh_timer.h>
+#include <cpu/shx3.h>
#include <asm/mmzone.h>
/*
@@ -440,11 +442,33 @@ static DECLARE_INTC_DESC(intc_desc_irl, "shx3-irl", vectors_irl, groups,
void __init plat_irq_setup_pins(int mode)
{
+ int ret = 0;
+
switch (mode) {
case IRQ_MODE_IRQ:
+ ret |= gpio_request(GPIO_FN_IRQ3, intc_desc_irq.name);
+ ret |= gpio_request(GPIO_FN_IRQ2, intc_desc_irq.name);
+ ret |= gpio_request(GPIO_FN_IRQ1, intc_desc_irq.name);
+ ret |= gpio_request(GPIO_FN_IRQ0, intc_desc_irq.name);
+
+ if (unlikely(ret)) {
+ pr_err("Failed to set IRQ mode\n");
+ return;
+ }
+
register_intc_controller(&intc_desc_irq);
break;
case IRQ_MODE_IRL3210:
+ ret |= gpio_request(GPIO_FN_IRL3, intc_desc_irl.name);
+ ret |= gpio_request(GPIO_FN_IRL2, intc_desc_irl.name);
+ ret |= gpio_request(GPIO_FN_IRL1, intc_desc_irl.name);
+ ret |= gpio_request(GPIO_FN_IRL0, intc_desc_irl.name);
+
+ if (unlikely(ret)) {
+ pr_err("Failed to set IRL mode\n");
+ return;
+ }
+
register_intc_controller(&intc_desc_irl);
break;
default:
--
2.30.9