[ARM] 4426/2: Netgear WG302 v2 and WAG302 v2 support

This patch provides support for the Netgear WG302 v2 and WAG302 v2 AccessPoint series.

This patch relies on the patch "Gateway 7001 series support" minimally, as they only have UART2 connected.

Updated to stay below the 80 char limit in uncompress.h

Signed-off-by: Imre Kaloz <kaloz@openwrt.org>
Signed-off-by: Deepak Saxena <dsaxena@mvista.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mach-ixp4xx/Kconfig

@@ -49,6 +49,14 @@ config MACH_GATEWAY7001
 	  7001 Access Point. For more information on this platform,
 	  see http://openwrt.org
 
+config MACH_WG302V2
+	bool "Netgear WG302 v2 / WAG302 v2"
+	select PCI
+	help
+	  Say 'Y' here if you want your kernel to support Netgear's
+	  WG302 v2 or WAG302 v2 Access Points. For more information
+	  on this platform, see http://openwrt.org
+
 config ARCH_IXDP425
 	bool "IXDP425"
 	help

arch/arm/mach-ixp4xx/Makefile

@@ -14,6 +14,7 @@ obj-pci-$(CONFIG_MACH_NSLU2)		+= nslu2-pci.o
 obj-pci-$(CONFIG_MACH_NAS100D)		+= nas100d-pci.o
 obj-pci-$(CONFIG_MACH_DSMG600)		+= dsmg600-pci.o
 obj-pci-$(CONFIG_MACH_GATEWAY7001)	+= gateway7001-pci.o
+obj-pci-$(CONFIG_MACH_WG302V2)		+= wg302v2-pci.o
 
 obj-y	+= common.o
 
@@ -26,5 +27,6 @@ obj-$(CONFIG_MACH_NSLU2)	+= nslu2-setup.o nslu2-power.o
 obj-$(CONFIG_MACH_NAS100D)	+= nas100d-setup.o nas100d-power.o
 obj-$(CONFIG_MACH_DSMG600)      += dsmg600-setup.o dsmg600-power.o
 obj-$(CONFIG_MACH_GATEWAY7001)	+= gateway7001-setup.o
+obj-$(CONFIG_MACH_WG302V2)	+= wg302v2-setup.o
 
 obj-$(CONFIG_PCI)		+= $(obj-pci-$(CONFIG_PCI)) common-pci.o

arch/arm/mach-ixp4xx/wg302v2-pci.c

@@ -0,0 +1,64 @@
+/*
+ * arch/arch/mach-ixp4xx/wg302v2-pci.c
+ *
+ * PCI setup routines for the Netgear WG302 v2 and WAG302 v2
+ *
+ * Copyright (C) 2007 Imre Kaloz <kaloz@openwrt.org>
+ *
+ * based on coyote-pci.c:
+ *	Copyright (C) 2002 Jungo Software Technologies.
+ *	Copyright (C) 2003 MontaVista Software, Inc.
+ *
+ * Maintainer: Imre Kaloz <kaloz@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/irq.h>
+
+#include <asm/mach-types.h>
+#include <asm/hardware.h>
+#include <asm/irq.h>
+
+#include <asm/mach/pci.h>
+
+void __init wg302v2_pci_preinit(void)
+{
+	set_irq_type(IRQ_IXP4XX_GPIO8, IRQT_LOW);
+	set_irq_type(IRQ_IXP4XX_GPIO9, IRQT_LOW);
+
+	ixp4xx_pci_preinit();
+}
+
+static int __init wg302v2_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+{
+	if (slot == 1)
+		return IRQ_IXP4XX_GPIO8;
+	else if (slot == 2)
+		return IRQ_IXP4XX_GPIO9;
+	else return -1;
+}
+
+struct hw_pci wg302v2_pci __initdata = {
+	.nr_controllers = 1,
+	.preinit =        wg302v2_pci_preinit,
+	.swizzle =        pci_std_swizzle,
+	.setup =          ixp4xx_setup,
+	.scan =           ixp4xx_scan_bus,
+	.map_irq =        wg302v2_map_irq,
+};
+
+int __init wg302v2_pci_init(void)
+{
+	if (machine_is_wg302v2())
+		pci_common_init(&wg302v2_pci);
+	return 0;
+}
+
+subsys_initcall(wg302v2_pci_init);

arch/arm/mach-ixp4xx/wg302v2-setup.c

@@ -0,0 +1,109 @@
+/*
+ * arch/arm/mach-ixp4xx/wg302-setup.c
+ *
+ * Board setup for the Netgear WG302 v2 and WAG302 v2
+ *
+ * Copyright (C) 2007 Imre Kaloz <Kaloz@openwrt.org>
+ *
+ * based on coyote-setup.c:
+ *      Copyright (C) 2003-2005 MontaVista Software, Inc.
+ *
+ * Author: Imre Kaloz <kaloz@openwrt.org>
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/serial.h>
+#include <linux/tty.h>
+#include <linux/serial_8250.h>
+#include <linux/slab.h>
+
+#include <asm/types.h>
+#include <asm/setup.h>
+#include <asm/memory.h>
+#include <asm/hardware.h>
+#include <asm/irq.h>
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/flash.h>
+
+static struct flash_platform_data wg302v2_flash_data = {
+	.map_name	= "cfi_probe",
+	.width		= 2,
+};
+
+static struct resource wg302v2_flash_resource = {
+	.flags		= IORESOURCE_MEM,
+};
+
+static struct platform_device wg302v2_flash = {
+	.name		= "IXP4XX-Flash",
+	.id		= 0,
+	.dev		= {
+		.platform_data = &wg302v2_flash_data,
+	},
+	.num_resources	= 1,
+	.resource	= &wg302v2_flash_resource,
+};
+
+static struct resource wg302v2_uart_resource = {
+	.start	= IXP4XX_UART2_BASE_PHYS,
+	.end	= IXP4XX_UART2_BASE_PHYS + 0x0fff,
+	.flags	= IORESOURCE_MEM,
+};
+
+static struct plat_serial8250_port wg302v2_uart_data[] = {
+	{
+		.mapbase	= IXP4XX_UART2_BASE_PHYS,
+		.membase	= (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
+		.irq		= IRQ_IXP4XX_UART2,
+		.flags		= UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
+		.iotype		= UPIO_MEM,
+		.regshift	= 2,
+		.uartclk	= IXP4XX_UART_XTAL,
+	},
+	{ },
+};
+
+static struct platform_device wg302v2_uart = {
+	.name		= "serial8250",
+	.id		= PLAT8250_DEV_PLATFORM,
+	.dev			= {
+		.platform_data	= wg302v2_uart_data,
+	},
+	.num_resources	= 1,
+	.resource	= &wg302v2_uart_resource,
+};
+
+static struct platform_device *wg302v2_devices[] __initdata = {
+	&wg302v2_flash,
+	&wg302v2_uart,
+};
+
+static void __init wg302v2_init(void)
+{
+	ixp4xx_sys_init();
+
+	wg302v2_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
+	wg302v2_flash_resource.end = IXP4XX_EXP_BUS_BASE(0) + SZ_32M - 1;
+
+	*IXP4XX_EXP_CS0 |= IXP4XX_FLASH_WRITABLE;
+	*IXP4XX_EXP_CS1 = *IXP4XX_EXP_CS0;
+
+	platform_add_devices(wg302v2_devices, ARRAY_SIZE(wg302v2_devices));
+}
+
+#ifdef CONFIG_MACH_WG302V2
+MACHINE_START(WG302V2, "Netgear WG302 v2 / WAG302 v2")
+	/* Maintainer: Imre Kaloz <kaloz@openwrt.org> */
+	.phys_io	= IXP4XX_PERIPHERAL_BASE_PHYS,
+	.io_pg_offst	= ((IXP4XX_PERIPHERAL_BASE_VIRT) >> 18) & 0xfffc,
+	.map_io		= ixp4xx_map_io,
+	.init_irq	= ixp4xx_init_irq,
+	.timer		= &ixp4xx_timer,
+	.boot_params	= 0x0100,
+	.init_machine	= wg302v2_init,
+MACHINE_END
+#endif

include/asm-arm/arch-ixp4xx/uncompress.h

@@ -41,7 +41,7 @@ static __inline__ void __arch_decomp_setup(unsigned long arch_id)
 	 * Some boards are using UART2 as console
 	 */
 	if (machine_is_adi_coyote() || machine_is_gtwx5715() ||
-			 machine_is_gateway7001())
+			 machine_is_gateway7001() || machine_is_wg302v2())
 		uart_base = (volatile u32*) IXP4XX_UART2_BASE_PHYS;
 	else
 		uart_base = (volatile u32*) IXP4XX_UART1_BASE_PHYS;