[MIPS] Separate platform_device registration for VR41xx GPIO

Signed-off-by: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

2 files changed, 123 insertions, 1 deletions

diff --git a/arch/mips/vr41xx/common/Makefile b/arch/mips/vr41xx/common/Makefile
index fcf94d7b1478..22b074e72121 100644
--- a/arch/mips/vr41xx/common/Makefile
+++ b/arch/mips/vr41xx/common/Makefile
@@ -2,4 +2,4 @@
 # Makefile for common code of the NEC VR4100 series.
 #
 
-obj-y   += bcu.o cmu.o icu.o init.o irq.o pmu.o siu.o type.o
+obj-y   += bcu.o cmu.o giu.o icu.o init.o irq.o pmu.o siu.o type.o
diff --git a/arch/mips/vr41xx/common/giu.c b/arch/mips/vr41xx/common/giu.c
new file mode 100644
index 000000000000..d21f6f2d22a3
--- /dev/null
+++ b/arch/mips/vr41xx/common/giu.c
@@ -0,0 +1,122 @@
+/*
+ *  NEC VR4100 series GIU platform device.
+ *
+ *  Copyright (C) 2007  Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/platform_device.h>
+
+#include <asm/cpu.h>
+#include <asm/vr41xx/giu.h>
+#include <asm/vr41xx/irq.h>
+
+static struct resource giu_50pins_pullupdown_resource[] __initdata = {
+        {
+                .start  = 0x0b000100,
+                .end    = 0x0b00011f,
+                .flags  = IORESOURCE_MEM,
+        },
+        {
+                .start  = 0x0b0002e0,
+                .end    = 0x0b0002e3,
+                .flags  = IORESOURCE_MEM,
+        },
+        {
+                .start  = GIUINT_IRQ,
+                .end    = GIUINT_IRQ,
+                .flags  = IORESOURCE_IRQ,
+        },
+};
+
+static struct resource giu_36pins_resource[] __initdata = {
+        {
+                .start  = 0x0f000140,
+                .end    = 0x0f00015f,
+                .flags  = IORESOURCE_MEM,
+        },
+        {
+                .start  = GIUINT_IRQ,
+                .end    = GIUINT_IRQ,
+                .flags  = IORESOURCE_IRQ,
+        },
+};
+
+static struct resource giu_48pins_resource[] __initdata = {
+        {
+                .start  = 0x0f000140,
+                .end    = 0x0f000167,
+                .flags  = IORESOURCE_MEM,
+        },
+        {
+                .start  = GIUINT_IRQ,
+                .end    = GIUINT_IRQ,
+                .flags  = IORESOURCE_IRQ,
+        },
+};
+
+static int __init vr41xx_giu_add(void)
+{
+        struct platform_device *pdev;
+        struct resource *res;
+        unsigned int num;
+        int retval;
+
+        pdev = platform_device_alloc("GIU", -1);
+        if (!pdev)
+                return -ENOMEM;
+
+        switch (current_cpu_data.cputype) {
+        case CPU_VR4111:
+        case CPU_VR4121:
+                pdev->id = GPIO_50PINS_PULLUPDOWN;
+                res = giu_50pins_pullupdown_resource;
+                num = ARRAY_SIZE(giu_50pins_pullupdown_resource);
+                break;
+        case CPU_VR4122:
+        case CPU_VR4131:
+                pdev->id = GPIO_36PINS;
+                res = giu_36pins_resource;
+                num = ARRAY_SIZE(giu_36pins_resource);
+                break;
+        case CPU_VR4133:
+                pdev->id = GPIO_48PINS_EDGE_SELECT;
+                res = giu_48pins_resource;
+                num = ARRAY_SIZE(giu_48pins_resource);
+                break;
+        default:
+                retval = -ENODEV;
+                goto err_free_device;
+        }
+
+        retval = platform_device_add_resources(pdev, res, num);
+        if (retval)
+                goto err_free_device;
+
+        retval = platform_device_add(pdev);
+        if (retval)
+                goto err_free_device;
+
+        return 0;
+
+err_free_device:
+        platform_device_put(pdev);
+
+        return retval;
+}
+device_initcall(vr41xx_giu_add);