13 files changed, 197 insertions, 461 deletions

diff --git a/arch/arm/mach-orion5x/Makefile b/arch/arm/mach-orion5x/Makefile
index 3d4a1bc..edc38e2 100644
--- a/arch/arm/mach-orion5x/Makefile
+++ b/arch/arm/mach-orion5x/Makefile
@@ -1,4 +1,4 @@
-obj-y				+= common.o addr-map.o pci.o gpio.o irq.o mpp.o
+obj-y				+= common.o addr-map.o pci.o irq.o mpp.o
 obj-$(CONFIG_MACH_DB88F5281)	+= db88f5281-setup.o
 obj-$(CONFIG_MACH_RD88F5182)	+= rd88f5182-setup.o
 obj-$(CONFIG_MACH_KUROBOX_PRO)	+= kurobox_pro-setup.o
diff --git a/arch/arm/mach-orion5x/common.c b/arch/arm/mach-orion5x/common.c
index 437065c..0a62337 100644
--- a/arch/arm/mach-orion5x/common.c
+++ b/arch/arm/mach-orion5x/common.c
@@ -72,6 +72,7 @@ void __init orion5x_map_io(void)
  ****************************************************************************/
 static struct orion_ehci_data orion5x_ehci_data = {
 	.dram		= &orion5x_mbus_dram_info,
+	.phy_version	= EHCI_PHY_ORION,
 };
 
 static u64 ehci_dmamask = 0xffffffffUL;
diff --git a/arch/arm/mach-orion5x/common.h b/arch/arm/mach-orion5x/common.h
index a000c7c..798b9a5 100644
--- a/arch/arm/mach-orion5x/common.h
+++ b/arch/arm/mach-orion5x/common.h
@@ -51,13 +51,6 @@ int orion5x_pci_sys_setup(int nr, struct pci_sys_data *sys);
 struct pci_bus *orion5x_pci_sys_scan_bus(int nr, struct pci_sys_data *sys);
 int orion5x_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin);
 
-/*
- * Valid GPIO pins according to MPP setup, used by machine-setup.
- * (/mach-orion/gpio.c).
- */
-void orion5x_gpio_set_valid(unsigned pin, int valid);
-void gpio_display(void);	/* debug */
-
 struct machine_desc;
 struct meminfo;
 struct tag;
diff --git a/arch/arm/mach-orion5x/dns323-setup.c b/arch/arm/mach-orion5x/dns323-setup.c
index 3e66098..0722d65 100644
--- a/arch/arm/mach-orion5x/dns323-setup.c
+++ b/arch/arm/mach-orion5x/dns323-setup.c
@@ -21,6 +21,7 @@
 #include <linux/gpio_keys.h>
 #include <linux/input.h>
 #include <linux/i2c.h>
+#include <linux/ata_platform.h>
 #include <asm/mach-types.h>
 #include <asm/gpio.h>
 #include <asm/mach/arch.h>
@@ -64,9 +65,21 @@ static struct hw_pci dns323_pci __initdata = {
 	.map_irq	= dns323_pci_map_irq,
 };
 
+static int __init dns323_dev_id(void)
+{
+	u32 dev, rev;
+
+	orion5x_pcie_id(&dev, &rev);
+
+	return dev;
+}
+
 static int __init dns323_pci_init(void)
 {
-	if (machine_is_dns323())
+	/* The 5182 doesn't really use it's PCI bus, and initialising PCI
+	 * gets in the way of initialising the SATA controller.
+	 */
+	if (machine_is_dns323() && dns323_dev_id() != MV88F5182_DEV_ID)
 		pci_common_init(&dns323_pci);
 
 	return 0;
@@ -75,14 +88,6 @@ static int __init dns323_pci_init(void)
 subsys_initcall(dns323_pci_init);
 
 /****************************************************************************
- * Ethernet
- */
-
-static struct mv643xx_eth_platform_data dns323_eth_data = {
-	.phy_addr = MV643XX_ETH_PHY_ADDR(8),
-};
-
-/****************************************************************************
  * 8MiB NOR flash (Spansion S29GL064M90TFIR4)
  *
  * Layout as used by D-Link:
@@ -143,6 +148,90 @@ static struct platform_device dns323_nor_flash = {
 };
 
 /****************************************************************************
+ * Ethernet
+ */
+
+static struct mv643xx_eth_platform_data dns323_eth_data = {
+	.phy_addr = MV643XX_ETH_PHY_ADDR(8),
+};
+
+/* dns323_parse_hex_*() taken from tsx09-common.c; should a common copy of these
+ * functions be kept somewhere?
+ */
+static int __init dns323_parse_hex_nibble(char n)
+{
+	if (n >= '0' && n <= '9')
+		return n - '0';
+
+	if (n >= 'A' && n <= 'F')
+		return n - 'A' + 10;
+
+	if (n >= 'a' && n <= 'f')
+		return n - 'a' + 10;
+
+	return -1;
+}
+
+static int __init dns323_parse_hex_byte(const char *b)
+{
+	int hi;
+	int lo;
+
+	hi = dns323_parse_hex_nibble(b[0]);
+	lo = dns323_parse_hex_nibble(b[1]);
+
+	if (hi < 0 || lo < 0)
+		return -1;
+
+	return (hi << 4) | lo;
+}
+
+static int __init dns323_read_mac_addr(void)
+{
+	u_int8_t addr[6];
+	int i;
+	char *mac_page;
+
+	/* MAC address is stored as a regular ol' string in /dev/mtdblock4
+	 * (0x007d0000-0x00800000) starting at offset 196480 (0x2ff80).
+	 */
+	mac_page = ioremap(DNS323_NOR_BOOT_BASE + 0x7d0000 + 196480, 1024);
+	if (!mac_page)
+		return -ENOMEM;
+
+	/* Sanity check the string we're looking at */
+	for (i = 0; i < 5; i++) {
+		if (*(mac_page + (i * 3) + 2) != ':') {
+			goto error_fail;
+		}
+	}
+
+	for (i = 0; i < 6; i++)	{
+		int byte;
+
+		byte = dns323_parse_hex_byte(mac_page + (i * 3));
+		if (byte < 0) {
+			goto error_fail;
+		}
+
+		addr[i] = byte;
+	}
+
+	iounmap(mac_page);
+	printk("DNS323: Found ethernet MAC address: ");
+	for (i = 0; i < 6; i++)
+		printk("%.2x%s", addr[i], (i < 5) ? ":" : ".\n");
+
+	memcpy(dns323_eth_data.mac_addr, addr, 6);
+
+	return 0;
+
+error_fail:
+	iounmap(mac_page);
+	return -EINVAL;
+}
+
+/****************************************************************************
  * GPIO LEDs (simple - doesn't use hardware blinking support)
  */
 
@@ -207,10 +296,17 @@ static struct platform_device dns323_button_device = {
 	},
 };
 
+/*****************************************************************************
+ * SATA
+ */
+static struct mv_sata_platform_data dns323_sata_data = {
+       .n_ports        = 2,
+};
+
 /****************************************************************************
  * General Setup
  */
-static struct orion5x_mpp_mode dns323_mpp_modes[] __initdata = {
+static struct orion5x_mpp_mode dns323_mv88f5181_mpp_modes[] __initdata = {
 	{  0, MPP_PCIE_RST_OUTn },
 	{  1, MPP_GPIO },		/* right amber LED (sata ch0) */
 	{  2, MPP_GPIO },		/* left amber LED (sata ch1) */
@@ -234,6 +330,30 @@ static struct orion5x_mpp_mode dns323_mpp_modes[] __initdata = {
 	{ -1 },
 };
 
+static struct orion5x_mpp_mode dns323_mv88f5182_mpp_modes[] __initdata = {
+	{  0, MPP_UNUSED },
+	{  1, MPP_GPIO },		/* right amber LED (sata ch0) */
+	{  2, MPP_GPIO },		/* left amber LED (sata ch1) */
+	{  3, MPP_UNUSED },
+	{  4, MPP_GPIO },		/* power button LED */
+	{  5, MPP_GPIO },		/* power button LED */
+	{  6, MPP_GPIO },		/* GMT G751-2f overtemp */
+	{  7, MPP_GPIO },		/* M41T80 nIRQ/OUT/SQW */
+	{  8, MPP_GPIO },		/* triggers power off */
+	{  9, MPP_GPIO },		/* power button switch */
+	{ 10, MPP_GPIO },		/* reset button switch */
+	{ 11, MPP_UNUSED },
+	{ 12, MPP_SATA_LED },
+	{ 13, MPP_SATA_LED },
+	{ 14, MPP_SATA_LED },
+	{ 15, MPP_SATA_LED },
+	{ 16, MPP_UNUSED },
+	{ 17, MPP_UNUSED },
+	{ 18, MPP_UNUSED },
+	{ 19, MPP_UNUSED },
+	{ -1 },
+};
+
 /*
  * On the DNS-323 the following devices are attached via I2C:
  *
@@ -264,16 +384,15 @@ static void __init dns323_init(void)
 	/* Setup basic Orion functions. Need to be called early. */
 	orion5x_init();
 
-	orion5x_mpp_conf(dns323_mpp_modes);
-	writel(0, MPP_DEV_CTRL);		/* DEV_D[31:16] */
-
-	/*
-	 * Configure peripherals.
+	/* Just to be tricky, the 5182 has a completely different
+	 * set of MPP modes to the 5181.
 	 */
-	orion5x_ehci0_init();
-	orion5x_eth_init(&dns323_eth_data);
-	orion5x_i2c_init();
-	orion5x_uart0_init();
+	if (dns323_dev_id() == MV88F5182_DEV_ID)
+		orion5x_mpp_conf(dns323_mv88f5182_mpp_modes);
+	else {
+		orion5x_mpp_conf(dns323_mv88f5181_mpp_modes);
+		writel(0, MPP_DEV_CTRL);		/* DEV_D[31:16] */
+	}
 
 	/* setup flash mapping
 	 * CS3 holds a 8 MB Spansion S29GL064M90TFIR4
@@ -288,6 +407,23 @@ static void __init dns323_init(void)
 	i2c_register_board_info(0, dns323_i2c_devices,
 				ARRAY_SIZE(dns323_i2c_devices));
 
+	/*
+	 * Configure peripherals.
+	 */
+	if (dns323_read_mac_addr() < 0)
+		printk("DNS323: Failed to read MAC address\n");
+
+	orion5x_ehci0_init();
+	orion5x_eth_init(&dns323_eth_data);
+	orion5x_i2c_init();
+	orion5x_uart0_init();
+
+	/* The 5182 has it's SATA controller on-chip, and needs it's own little
+	 * init routine.
+	 */
+	if (dns323_dev_id() == MV88F5182_DEV_ID)
+		orion5x_sata_init(&dns323_sata_data);
+
 	/* register dns323 specific power-off method */
 	if (gpio_request(DNS323_GPIO_POWER_OFF, "POWEROFF") != 0 ||
 	    gpio_direction_output(DNS323_GPIO_POWER_OFF, 0) != 0)
diff --git a/arch/arm/mach-orion5x/gpio.c b/arch/arm/mach-orion5x/gpio.c
deleted file mode 100644
index f99d088..0000000
--- a/arch/arm/mach-orion5x/gpio.c
+++ /dev/null
@@ -1,231 +0,0 @@
-/*
- * arch/arm/mach-orion5x/gpio.c
- *
- * GPIO functions for Marvell Orion System On Chip
- *
- * Maintainer: Tzachi Perelstein <tzachi@marvell.com>
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2.  This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- */
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/spinlock.h>
-#include <linux/bitops.h>
-#include <linux/io.h>
-#include <asm/gpio.h>
-#include <mach/orion5x.h>
-#include "common.h"
-
-static DEFINE_SPINLOCK(gpio_lock);
-static unsigned long gpio_valid[BITS_TO_LONGS(GPIO_MAX)];
-static const char *gpio_label[GPIO_MAX];  /* non null for allocated GPIOs */
-
-void __init orion5x_gpio_set_valid(unsigned pin, int valid)
-{
-	if (valid)
-		__set_bit(pin, gpio_valid);
-	else
-		__clear_bit(pin, gpio_valid);
-}
-
-/*
- * GENERIC_GPIO primitives
- */
-int gpio_direction_input(unsigned pin)
-{
-	unsigned long flags;
-
-	if (pin >= GPIO_MAX || !test_bit(pin, gpio_valid)) {
-		pr_debug("%s: invalid GPIO %d\n", __func__, pin);
-		return -EINVAL;
-	}
-
-	spin_lock_irqsave(&gpio_lock, flags);
-
-	/*
-	 * Some callers might have not used the gpio_request(),
-	 * so flag this pin as requested now.
-	 */
-	if (!gpio_label[pin])
-		gpio_label[pin] = "?";
-
-	orion5x_setbits(GPIO_IO_CONF, 1 << pin);
-
-	spin_unlock_irqrestore(&gpio_lock, flags);
-	return 0;
-}
-EXPORT_SYMBOL(gpio_direction_input);
-
-int gpio_direction_output(unsigned pin, int value)
-{
-	unsigned long flags;
-	int mask;
-
-	if (pin >= GPIO_MAX || !test_bit(pin, gpio_valid)) {
-		pr_debug("%s: invalid GPIO %d\n", __func__, pin);
-		return -EINVAL;
-	}
-
-	spin_lock_irqsave(&gpio_lock, flags);
-
-	/*
-	 * Some callers might have not used the gpio_request(),
-	 * so flag this pin as requested now.
-	 */
-	if (!gpio_label[pin])
-		gpio_label[pin] = "?";
-
-	mask = 1 << pin;
-	orion5x_clrbits(GPIO_BLINK_EN, mask);
-	if (value)
-		orion5x_setbits(GPIO_OUT, mask);
-	else
-		orion5x_clrbits(GPIO_OUT, mask);
-	orion5x_clrbits(GPIO_IO_CONF, mask);
-
-	spin_unlock_irqrestore(&gpio_lock, flags);
-	return 0;
-}
-EXPORT_SYMBOL(gpio_direction_output);
-
-int gpio_get_value(unsigned pin)
-{
-	int val, mask = 1 << pin;
-
-	if (readl(GPIO_IO_CONF) & mask)
-		val = readl(GPIO_DATA_IN) ^ readl(GPIO_IN_POL);
-	else
-		val = readl(GPIO_OUT);
-
-	return val & mask;
-}
-EXPORT_SYMBOL(gpio_get_value);
-
-void gpio_set_value(unsigned pin, int value)
-{
-	unsigned long flags;
-	int mask = 1 << pin;
-
-	spin_lock_irqsave(&gpio_lock, flags);
-
-	orion5x_clrbits(GPIO_BLINK_EN, mask);
-	if (value)
-		orion5x_setbits(GPIO_OUT, mask);
-	else
-		orion5x_clrbits(GPIO_OUT, mask);
-
-	spin_unlock_irqrestore(&gpio_lock, flags);
-}
-EXPORT_SYMBOL(gpio_set_value);
-
-void orion5x_gpio_set_blink(unsigned pin, int blink)
-{
-	unsigned long flags;
-	int mask = 1 << pin;
-
-	spin_lock_irqsave(&gpio_lock, flags);
-
-	orion5x_clrbits(GPIO_OUT, mask);
-	if (blink)
-		orion5x_setbits(GPIO_BLINK_EN, mask);
-	else
-		orion5x_clrbits(GPIO_BLINK_EN, mask);
-
-	spin_unlock_irqrestore(&gpio_lock, flags);
-}
-EXPORT_SYMBOL(orion5x_gpio_set_blink);
-
-int gpio_request(unsigned pin, const char *label)
-{
-	int ret = 0;
-	unsigned long flags;
-
-	if (pin >= GPIO_MAX || !test_bit(pin, gpio_valid)) {
-		pr_debug("%s: invalid GPIO %d\n", __func__, pin);
-		return -EINVAL;
-	}
-
-	spin_lock_irqsave(&gpio_lock, flags);
-
-	if (gpio_label[pin]) {
-		pr_debug("%s: GPIO %d already used as %s\n",
-			 __func__, pin, gpio_label[pin]);
-		ret = -EBUSY;
-	} else
-		gpio_label[pin] = label ? label : "?";
-
-	spin_unlock_irqrestore(&gpio_lock, flags);
-	return ret;
-}
-EXPORT_SYMBOL(gpio_request);
-
-void gpio_free(unsigned pin)
-{
-	might_sleep();
-
-	if (pin >= GPIO_MAX || !test_bit(pin, gpio_valid)) {
-		pr_debug("%s: invalid GPIO %d\n", __func__, pin);
-		return;
-	}
-
-	if (!gpio_label[pin])
-		pr_warning("%s: GPIO %d already freed\n", __func__, pin);
-	else
-		gpio_label[pin] = NULL;
-}
-EXPORT_SYMBOL(gpio_free);
-
-/* Debug helper */
-void gpio_display(void)
-{
-	int i;
-
-	for (i = 0; i < GPIO_MAX; i++) {
-		printk(KERN_DEBUG "Pin-%d: ", i);
-
-		if (!test_bit(i, gpio_valid)) {
-			printk("non-GPIO\n");
-		} else if (!gpio_label[i]) {
-			printk("GPIO, free\n");
-		} else {
-			printk("GPIO, used by %s, ", gpio_label[i]);
-			if (readl(GPIO_IO_CONF) & (1 << i)) {
-				printk("input, active %s, level %s, edge %s\n",
-				((readl(GPIO_IN_POL) >> i) & 1) ? "low" : "high",
-				((readl(GPIO_LEVEL_MASK) >> i) & 1) ? "enabled" : "masked",
-				((readl(GPIO_EDGE_MASK) >> i) & 1) ? "enabled" : "masked");
-			} else {
-				printk("output, val=%d\n", (readl(GPIO_OUT) >> i) & 1);
-			}
-		}
-	}
-
-	printk(KERN_DEBUG "MPP_0_7_CTRL (0x%08x) = 0x%08x\n",
-				MPP_0_7_CTRL, readl(MPP_0_7_CTRL));
-	printk(KERN_DEBUG "MPP_8_15_CTRL (0x%08x) = 0x%08x\n",
-				MPP_8_15_CTRL, readl(MPP_8_15_CTRL));
-	printk(KERN_DEBUG "MPP_16_19_CTRL (0x%08x) = 0x%08x\n",
-				MPP_16_19_CTRL, readl(MPP_16_19_CTRL));
-	printk(KERN_DEBUG "MPP_DEV_CTRL (0x%08x) = 0x%08x\n",
-				MPP_DEV_CTRL, readl(MPP_DEV_CTRL));
-	printk(KERN_DEBUG "GPIO_OUT (0x%08x) = 0x%08x\n",
-				GPIO_OUT, readl(GPIO_OUT));
-	printk(KERN_DEBUG "GPIO_IO_CONF (0x%08x) = 0x%08x\n",
-				GPIO_IO_CONF, readl(GPIO_IO_CONF));
-	printk(KERN_DEBUG "GPIO_BLINK_EN (0x%08x) = 0x%08x\n",
-				GPIO_BLINK_EN, readl(GPIO_BLINK_EN));
-	printk(KERN_DEBUG "GPIO_IN_POL (0x%08x) = 0x%08x\n",
-				GPIO_IN_POL, readl(GPIO_IN_POL));
-	printk(KERN_DEBUG "GPIO_DATA_IN (0x%08x) = 0x%08x\n",
-				GPIO_DATA_IN, readl(GPIO_DATA_IN));
-	printk(KERN_DEBUG "GPIO_LEVEL_MASK (0x%08x) = 0x%08x\n",
-				GPIO_LEVEL_MASK, readl(GPIO_LEVEL_MASK));
-	printk(KERN_DEBUG "GPIO_EDGE_CAUSE (0x%08x) = 0x%08x\n",
-				GPIO_EDGE_CAUSE, readl(GPIO_EDGE_CAUSE));
-	printk(KERN_DEBUG "GPIO_EDGE_MASK (0x%08x) = 0x%08x\n",
-				GPIO_EDGE_MASK, readl(GPIO_EDGE_MASK));
-}
diff --git a/arch/arm/mach-orion5x/include/mach/dma.h b/arch/arm/mach-orion5x/include/mach/dma.h
deleted file mode 100644
index 40a8c17..0000000
--- a/arch/arm/mach-orion5x/include/mach/dma.h
+++ /dev/null
@@ -1 +0,0 @@
-/* empty */
diff --git a/arch/arm/mach-orion5x/include/mach/gpio.h b/arch/arm/mach-orion5x/include/mach/gpio.h
index 65dc136..d8182e8 100644
--- a/arch/arm/mach-orion5x/include/mach/gpio.h
+++ b/arch/arm/mach-orion5x/include/mach/gpio.h
@@ -2,18 +2,26 @@
  * arch/arm/mach-orion5x/include/mach/gpio.h
  *
  * This file is licensed under the terms of the GNU General Public
- * License version 2. This program is licensed "as is" without any
+ * License version 2.  This program is licensed "as is" without any
  * warranty of any kind, whether express or implied.
  */
 
-extern int gpio_request(unsigned pin, const char *label);
-extern void gpio_free(unsigned pin);
-extern int gpio_direction_input(unsigned pin);
-extern int gpio_direction_output(unsigned pin, int value);
-extern int gpio_get_value(unsigned pin);
-extern void gpio_set_value(unsigned pin, int value);
-extern void orion5x_gpio_set_blink(unsigned pin, int blink);
-extern void gpio_display(void);		/* debug */
+#ifndef __ASM_ARCH_GPIO_H
+#define __ASM_ARCH_GPIO_H
+
+#include <mach/irqs.h>
+#include <plat/gpio.h>
+#include <asm-generic/gpio.h>		/* cansleep wrappers */
+
+#define GPIO_MAX		32
+#define GPIO_OUT(pin)		ORION5X_DEV_BUS_REG(0x100)
+#define GPIO_IO_CONF(pin)	ORION5X_DEV_BUS_REG(0x104)
+#define GPIO_BLINK_EN(pin)	ORION5X_DEV_BUS_REG(0x108)
+#define GPIO_IN_POL(pin)	ORION5X_DEV_BUS_REG(0x10c)
+#define GPIO_DATA_IN(pin)	ORION5X_DEV_BUS_REG(0x110)
+#define GPIO_EDGE_CAUSE(pin)	ORION5X_DEV_BUS_REG(0x114)
+#define GPIO_EDGE_MASK(pin)	ORION5X_DEV_BUS_REG(0x118)
+#define GPIO_LEVEL_MASK(pin)	ORION5X_DEV_BUS_REG(0x11c)
 
 static inline int gpio_to_irq(int pin)
 {
@@ -25,4 +33,5 @@ static inline int irq_to_gpio(int irq)
 	return irq - IRQ_ORION5X_GPIO_START;
 }
 
-#include <asm-generic/gpio.h>		/* cansleep wrappers */
+
+#endif
diff --git a/arch/arm/mach-orion5x/include/mach/io.h b/arch/arm/mach-orion5x/include/mach/io.h
index f24b251..c47b033 100644
--- a/arch/arm/mach-orion5x/include/mach/io.h
+++ b/arch/arm/mach-orion5x/include/mach/io.h
@@ -38,14 +38,9 @@ __arch_iounmap(void __iomem *addr)
 		__iounmap(addr);
 }
 
-static inline void __iomem *__io(unsigned long addr)
-{
-	return (void __iomem *)addr;
-}
-
 #define __arch_ioremap(p, s, m)	__arch_ioremap(p, s, m)
 #define __arch_iounmap(a)	__arch_iounmap(a)
-#define __io(a)			__io(a)
+#define __io(a)			__typesafe_io(a)
 #define __mem_pci(a)		(a)
 
 
diff --git a/arch/arm/mach-orion5x/include/mach/irqs.h b/arch/arm/mach-orion5x/include/mach/irqs.h
index d5b0fbf..a6fa9d8 100644
--- a/arch/arm/mach-orion5x/include/mach/irqs.h
+++ b/arch/arm/mach-orion5x/include/mach/irqs.h
@@ -13,8 +13,6 @@
 #ifndef __ASM_ARCH_IRQS_H
 #define __ASM_ARCH_IRQS_H
 
-#include "orion5x.h"	/* need GPIO_MAX */
-
 /*
  * Orion Main Interrupt Controller
  */
@@ -54,7 +52,7 @@
  * Orion General Purpose Pins
  */
 #define IRQ_ORION5X_GPIO_START	32
-#define NR_GPIO_IRQS		GPIO_MAX
+#define NR_GPIO_IRQS		32
 
 #define NR_IRQS			(IRQ_ORION5X_GPIO_START + NR_GPIO_IRQS)
 
diff --git a/arch/arm/mach-orion5x/include/mach/memory.h b/arch/arm/mach-orion5x/include/mach/memory.h
index 54dd76b..52a2955 100644
--- a/arch/arm/mach-orion5x/include/mach/memory.h
+++ b/arch/arm/mach-orion5x/include/mach/memory.h
@@ -9,8 +9,4 @@
 
 #define PHYS_OFFSET	UL(0x00000000)
 
-#define __virt_to_bus(x)	__virt_to_phys(x)
-#define __bus_to_virt(x)	__phys_to_virt(x)
-
-
 #endif
diff --git a/arch/arm/mach-orion5x/include/mach/orion5x.h b/arch/arm/mach-orion5x/include/mach/orion5x.h
index 9f5ce1c..67bda31 100644
--- a/arch/arm/mach-orion5x/include/mach/orion5x.h
+++ b/arch/arm/mach-orion5x/include/mach/orion5x.h
@@ -134,14 +134,6 @@
 #define MPP_16_19_CTRL		ORION5X_DEV_BUS_REG(0x050)
 #define MPP_DEV_CTRL		ORION5X_DEV_BUS_REG(0x008)
 #define MPP_RESET_SAMPLE	ORION5X_DEV_BUS_REG(0x010)
-#define GPIO_OUT		ORION5X_DEV_BUS_REG(0x100)
-#define GPIO_IO_CONF		ORION5X_DEV_BUS_REG(0x104)
-#define GPIO_BLINK_EN		ORION5X_DEV_BUS_REG(0x108)
-#define GPIO_IN_POL		ORION5X_DEV_BUS_REG(0x10c)
-#define GPIO_DATA_IN		ORION5X_DEV_BUS_REG(0x110)
-#define GPIO_EDGE_CAUSE		ORION5X_DEV_BUS_REG(0x114)
-#define GPIO_EDGE_MASK		ORION5X_DEV_BUS_REG(0x118)
-#define GPIO_LEVEL_MASK		ORION5X_DEV_BUS_REG(0x11c)
 #define DEV_BANK_0_PARAM	ORION5X_DEV_BUS_REG(0x45c)
 #define DEV_BANK_1_PARAM	ORION5X_DEV_BUS_REG(0x460)
 #define DEV_BANK_2_PARAM	ORION5X_DEV_BUS_REG(0x464)
@@ -149,7 +141,6 @@
 #define DEV_BUS_CTRL		ORION5X_DEV_BUS_REG(0x4c0)
 #define DEV_BUS_INT_CAUSE	ORION5X_DEV_BUS_REG(0x4d0)
 #define DEV_BUS_INT_MASK	ORION5X_DEV_BUS_REG(0x4d4)
-#define GPIO_MAX		32
 
 /***************************************************************************
  * Orion CPU Bridge Registers
diff --git a/arch/arm/mach-orion5x/irq.c b/arch/arm/mach-orion5x/irq.c
index 632a36f..0caae43 100644
--- a/arch/arm/mach-orion5x/irq.c
+++ b/arch/arm/mach-orion5x/irq.c
@@ -19,193 +19,38 @@
 #include <plat/irq.h>
 #include "common.h"
 
-/*****************************************************************************
- * Orion GPIO IRQ
- *
- * GPIO_IN_POL register controlls whether GPIO_DATA_IN will hold the same
- * value of the line or the opposite value.
- *
- * Level IRQ handlers: DATA_IN is used directly as cause register.
- *                     Interrupt are masked by LEVEL_MASK registers.
- * Edge IRQ handlers:  Change in DATA_IN are latched in EDGE_CAUSE.
- *                     Interrupt are masked by EDGE_MASK registers.
- * Both-edge handlers: Similar to regular Edge handlers, but also swaps
- *                     the polarity to catch the next line transaction.
- *                     This is a race condition that might not perfectly
- *                     work on some use cases.
- *
- * Every eight GPIO lines are grouped (OR'ed) before going up to main
- * cause register.
- *
- *                    EDGE  cause    mask
- *        data-in   /--------| |-----| |----\
- *     -----| |-----                         ---- to main cause reg
- *           X      \----------------| |----/
- *        polarity    LEVEL          mask
- *
- ****************************************************************************/
-static void orion5x_gpio_irq_ack(u32 irq)
-{
-	int pin = irq_to_gpio(irq);
-	if (irq_desc[irq].status & IRQ_LEVEL)
-		/*
-		 * Mask bit for level interrupt
-		 */
-		orion5x_clrbits(GPIO_LEVEL_MASK, 1 << pin);
-	else
-		/*
-		 * Clear casue bit for egde interrupt
-		 */
-		orion5x_clrbits(GPIO_EDGE_CAUSE, 1 << pin);
-}
-
-static void orion5x_gpio_irq_mask(u32 irq)
-{
-	int pin = irq_to_gpio(irq);
-	if (irq_desc[irq].status & IRQ_LEVEL)
-		orion5x_clrbits(GPIO_LEVEL_MASK, 1 << pin);
-	else
-		orion5x_clrbits(GPIO_EDGE_MASK, 1 << pin);
-}
-
-static void orion5x_gpio_irq_unmask(u32 irq)
+static void gpio_irq_handler(unsigned int irq, struct irq_desc *desc)
 {
-	int pin = irq_to_gpio(irq);
-	if (irq_desc[irq].status & IRQ_LEVEL)
-		orion5x_setbits(GPIO_LEVEL_MASK, 1 << pin);
-	else
-		orion5x_setbits(GPIO_EDGE_MASK, 1 << pin);
-}
-
-static int orion5x_gpio_set_irq_type(u32 irq, u32 type)
-{
-	int pin = irq_to_gpio(irq);
-	struct irq_desc *desc;
-
-	if ((readl(GPIO_IO_CONF) & (1 << pin)) == 0) {
-		printk(KERN_ERR "orion5x_gpio_set_irq_type failed "
-				"(irq %d, pin %d).\n", irq, pin);
-		return -EINVAL;
-	}
-
-	desc = irq_desc + irq;
-
-	switch (type) {
-	case IRQ_TYPE_LEVEL_HIGH:
-		desc->handle_irq = handle_level_irq;
-		desc->status |= IRQ_LEVEL;
-		orion5x_clrbits(GPIO_IN_POL, (1 << pin));
-		break;
-	case IRQ_TYPE_LEVEL_LOW:
-		desc->handle_irq = handle_level_irq;
-		desc->status |= IRQ_LEVEL;
-		orion5x_setbits(GPIO_IN_POL, (1 << pin));
-		break;
-	case IRQ_TYPE_EDGE_RISING:
-		desc->handle_irq = handle_edge_irq;
-		desc->status &= ~IRQ_LEVEL;
-		orion5x_clrbits(GPIO_IN_POL, (1 << pin));
-		break;
-	case IRQ_TYPE_EDGE_FALLING:
-		desc->handle_irq = handle_edge_irq;
-		desc->status &= ~IRQ_LEVEL;
-		orion5x_setbits(GPIO_IN_POL, (1 << pin));
-		break;
-	case IRQ_TYPE_EDGE_BOTH:
-		desc->handle_irq = handle_edge_irq;
-		desc->status &= ~IRQ_LEVEL;
-		/*
-		 * set initial polarity based on current input level
-		 */
-		if ((readl(GPIO_IN_POL) ^ readl(GPIO_DATA_IN))
-		    & (1 << pin))
-			orion5x_setbits(GPIO_IN_POL, (1 << pin)); /* falling */
-		else
-			orion5x_clrbits(GPIO_IN_POL, (1 << pin)); /* rising */
-
-		break;
-	default:
-		printk(KERN_ERR "failed to set irq=%d (type=%d)\n", irq, type);
-		return -EINVAL;
-	}
-
-	desc->status &= ~IRQ_TYPE_SENSE_MASK;
-	desc->status |= type & IRQ_TYPE_SENSE_MASK;
-
-	return 0;
-}
-
-static struct irq_chip orion5x_gpio_irq_chip = {
-	.name		= "Orion-IRQ-GPIO",
-	.ack		= orion5x_gpio_irq_ack,
-	.mask		= orion5x_gpio_irq_mask,
-	.unmask		= orion5x_gpio_irq_unmask,
-	.set_type	= orion5x_gpio_set_irq_type,
-};
-
-static void orion5x_gpio_irq_handler(unsigned int irq, struct irq_desc *desc)
-{
-	u32 cause, offs, pin;
-
 	BUG_ON(irq < IRQ_ORION5X_GPIO_0_7 || irq > IRQ_ORION5X_GPIO_24_31);
-	offs = (irq - IRQ_ORION5X_GPIO_0_7) * 8;
-	cause = (readl(GPIO_DATA_IN) & readl(GPIO_LEVEL_MASK)) |
-		(readl(GPIO_EDGE_CAUSE) & readl(GPIO_EDGE_MASK));
 
-	for (pin = offs; pin < offs + 8; pin++) {
-		if (cause & (1 << pin)) {
-			irq = gpio_to_irq(pin);
-			desc = irq_desc + irq;
-			if ((desc->status & IRQ_TYPE_SENSE_MASK) == IRQ_TYPE_EDGE_BOTH) {
-				/* Swap polarity (race with GPIO line) */
-				u32 polarity = readl(GPIO_IN_POL);
-				polarity ^= 1 << pin;
-				writel(polarity, GPIO_IN_POL);
-			}
-			generic_handle_irq(irq);
-		}
-	}
+	orion_gpio_irq_handler((irq - IRQ_ORION5X_GPIO_0_7) << 3);
 }
 
-static void __init orion5x_init_gpio_irq(void)
+void __init orion5x_init_irq(void)
 {
 	int i;
-	struct irq_desc *desc;
+
+	orion_irq_init(0, (void __iomem *)MAIN_IRQ_MASK);
 
 	/*
 	 * Mask and clear GPIO IRQ interrupts
 	 */
-	writel(0x0, GPIO_LEVEL_MASK);
-	writel(0x0, GPIO_EDGE_MASK);
-	writel(0x0, GPIO_EDGE_CAUSE);
+	writel(0x0, GPIO_LEVEL_MASK(0));
+	writel(0x0, GPIO_EDGE_MASK(0));
+	writel(0x0, GPIO_EDGE_CAUSE(0));
 
 	/*
 	 * Register chained level handlers for GPIO IRQs by default.
 	 * User can use set_type() if he wants to use edge types handlers.
 	 */
 	for (i = IRQ_ORION5X_GPIO_START; i < NR_IRQS; i++) {
-		set_irq_chip(i, &orion5x_gpio_irq_chip);
+		set_irq_chip(i, &orion_gpio_irq_level_chip);
 		set_irq_handler(i, handle_level_irq);
-		desc = irq_desc + i;
-		desc->status |= IRQ_LEVEL;
+		irq_desc[i].status |= IRQ_LEVEL;
 		set_irq_flags(i, IRQF_VALID);
 	}
-	set_irq_chained_handler(IRQ_ORION5X_GPIO_0_7, orion5x_gpio_irq_handler);
-	set_irq_chained_handler(IRQ_ORION5X_GPIO_8_15, orion5x_gpio_irq_handler);
-	set_irq_chained_handler(IRQ_ORION5X_GPIO_16_23, orion5x_gpio_irq_handler);
-	set_irq_chained_handler(IRQ_ORION5X_GPIO_24_31, orion5x_gpio_irq_handler);
-}
-
-/*****************************************************************************
- * Orion Main IRQ
- ****************************************************************************/
-static void __init orion5x_init_main_irq(void)
-{
-	orion_irq_init(0, (void __iomem *)MAIN_IRQ_MASK);
-}
-
-void __init orion5x_init_irq(void)
-{
-	orion5x_init_main_irq();
-	orion5x_init_gpio_irq();
+	set_irq_chained_handler(IRQ_ORION5X_GPIO_0_7, gpio_irq_handler);
+	set_irq_chained_handler(IRQ_ORION5X_GPIO_8_15, gpio_irq_handler);
+	set_irq_chained_handler(IRQ_ORION5X_GPIO_16_23, gpio_irq_handler);
+	set_irq_chained_handler(IRQ_ORION5X_GPIO_24_31, gpio_irq_handler);
 }
diff --git a/arch/arm/mach-orion5x/mpp.c b/arch/arm/mach-orion5x/mpp.c
index 640ea2a..e23a3f9 100644
--- a/arch/arm/mach-orion5x/mpp.c
+++ b/arch/arm/mach-orion5x/mpp.c
@@ -12,6 +12,7 @@
 #include <linux/init.h>
 #include <linux/mbus.h>
 #include <linux/io.h>
+#include <asm/gpio.h>
 #include <mach/hardware.h>
 #include "common.h"
 #include "mpp.h"
@@ -152,7 +153,10 @@ void __init orion5x_mpp_conf(struct orion5x_mpp_mode *mode)
 		*reg &= ~(0xf << shift);
 		*reg |= (num_type & 0xf) << shift;
 
-		orion5x_gpio_set_valid(mode->mpp, !!(mode->type == MPP_GPIO));
+		if (mode->type == MPP_UNUSED && (mode->mpp < 16 || is_5182()))
+			orion_gpio_set_unused(mode->mpp);
+
+		orion_gpio_set_valid(mode->mpp, !!(mode->type == MPP_GPIO));
 
 		mode++;
 	}