[ARM] 4033/1: Add separate Avila board setup code

This patch adds support for the Gateworks Avila Network Platform in
a separate set of setup files to the IXDP425. This is necessary now
that a driver for the Avila CF card slot is available. It also adds
support for a minor variant on the Avila board known as the Loft,
which has a different number of maximum PCI devices.

Signed-off-by: Michael-Luke Jones <mlj28@cam.ac.uk>
Signed-off-by: Deepak Saxena <dsaxena@plexity.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mach-ixp4xx/Kconfig

@@ -17,7 +17,7 @@ config MACH_NSLU2
 	  NSLU2 NAS device. For more information on this platform,
 	  see http://www.nslu2-linux.org
 
-config ARCH_AVILA
+config MACH_AVILA
 	bool "Avila"
 	select PCI
 	help
@@ -25,6 +25,14 @@ config ARCH_AVILA
 	  Avila Network Platform. For more information on this platform,
 	  see <file:Documentation/arm/IXP4xx>.
 
+config MACH_LOFT
+    bool "Loft"
+    depends on MACH_AVILA
+    help
+	  Say 'Y' here if you want your kernel to support the Giant
+	  Shoulder Inc Loft board (a minor variation on the standard
+	  Gateworks Avila Network Platform).
+
 config ARCH_ADI_COYOTE
 	bool "Coyote"
 	select PCI
@@ -86,7 +94,7 @@ config MACH_NAS100D
 #
 config	ARCH_IXDP4XX
 	bool
-	depends on ARCH_IXDP425 || ARCH_AVILA || MACH_IXDP465
+	depends on ARCH_IXDP425 || MACH_IXDP465
 	default y
 
 #

arch/arm/mach-ixp4xx/Makefile

@@ -6,6 +6,7 @@ obj-pci-y	:=
 obj-pci-n	:=
 
 obj-pci-$(CONFIG_ARCH_IXDP4XX)		+= ixdp425-pci.o
+obj-pci-$(CONFIG_MACH_AVILA)		+= avila-pci.o
 obj-pci-$(CONFIG_MACH_IXDPG425)		+= ixdpg425-pci.o
 obj-pci-$(CONFIG_ARCH_ADI_COYOTE)	+= coyote-pci.o
 obj-pci-$(CONFIG_MACH_GTWX5715)		+= gtwx5715-pci.o
@@ -15,6 +16,7 @@ obj-pci-$(CONFIG_MACH_NAS100D)		+= nas100d-pci.o
 obj-y	+= common.o
 
 obj-$(CONFIG_ARCH_IXDP4XX)	+= ixdp425-setup.o
+obj-$(CONFIG_MACH_AVILA)	+= avila-setup.o
 obj-$(CONFIG_MACH_IXDPG425)	+= coyote-setup.o
 obj-$(CONFIG_ARCH_ADI_COYOTE)	+= coyote-setup.o
 obj-$(CONFIG_MACH_GTWX5715)	+= gtwx5715-setup.o

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

@@ -0,0 +1,78 @@
+/*
+ * arch/arm/mach-ixp4xx/avila-pci.c
+ *
+ * Gateworks Avila board-level PCI initialization
+ *
+ * Author: Michael-Luke Jones <mlj28@cam.ac.uk>
+ *
+ * Based on ixdp-pci.c
+ * Copyright (C) 2002 Intel Corporation.
+ * Copyright (C) 2003-2004 MontaVista Software, Inc.
+ *
+ * Maintainer: Deepak Saxena <dsaxena@plexity.net>
+ *
+ * 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 <linux/delay.h>
+
+#include <asm/mach/pci.h>
+#include <asm/irq.h>
+#include <asm/hardware.h>
+#include <asm/mach-types.h>
+
+void __init avila_pci_preinit(void)
+{
+	set_irq_type(IRQ_AVILA_PCI_INTA, IRQT_LOW);
+	set_irq_type(IRQ_AVILA_PCI_INTB, IRQT_LOW);
+	set_irq_type(IRQ_AVILA_PCI_INTC, IRQT_LOW);
+	set_irq_type(IRQ_AVILA_PCI_INTD, IRQT_LOW);
+
+	ixp4xx_pci_preinit();
+}
+
+static int __init avila_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+{
+	static int pci_irq_table[AVILA_PCI_IRQ_LINES] = {
+		IRQ_AVILA_PCI_INTA,
+		IRQ_AVILA_PCI_INTB,
+		IRQ_AVILA_PCI_INTC,
+		IRQ_AVILA_PCI_INTD
+	};
+
+	int irq = -1;
+
+	if (slot >= 1 &&
+	slot <= (machine_is_loft() ? LOFT_PCI_MAX_DEV : AVILA_PCI_MAX_DEV) &&
+		pin >= 1 && pin <= AVILA_PCI_IRQ_LINES) {
+		irq = pci_irq_table[(slot + pin - 2) % 4];
+	}
+
+	return irq;
+}
+
+struct hw_pci avila_pci __initdata = {
+	.nr_controllers = 1,
+	.preinit	= avila_pci_preinit,
+	.swizzle	= pci_std_swizzle,
+	.setup		= ixp4xx_setup,
+	.scan		= ixp4xx_scan_bus,
+	.map_irq	= avila_map_irq,
+};
+
+int __init avila_pci_init(void)
+{
+	if (machine_is_avila() || machine_is_loft())
+		pci_common_init(&avila_pci);
+	return 0;
+}
+
+subsys_initcall(avila_pci_init);
+

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

@@ -0,0 +1,152 @@
+/*
+ * arch/arm/mach-ixp4xx/avila-setup.c
+ *
+ * Gateworks Avila board-setup
+ *
+ * Author: Michael-Luke Jones <mlj28@cam.ac.uk>
+ *
+ * Based on ixdp-setup.c
+ * Copyright (C) 2003-2005 MontaVista Software, Inc.
+ *
+ * Author: Deepak Saxena <dsaxena@plexity.net>
+ */
+
+#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/mach-types.h>
+#include <asm/irq.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/flash.h>
+
+static struct flash_platform_data avila_flash_data = {
+	.map_name	= "cfi_probe",
+	.width		= 2,
+};
+
+static struct resource avila_flash_resource = {
+	.flags		= IORESOURCE_MEM,
+};
+
+static struct platform_device avila_flash = {
+	.name		= "IXP4XX-Flash",
+	.id		= 0,
+	.dev		= {
+		.platform_data = &avila_flash_data,
+	},
+	.num_resources	= 1,
+	.resource	= &avila_flash_resource,
+};
+
+static struct ixp4xx_i2c_pins avila_i2c_gpio_pins = {
+	.sda_pin	= AVILA_SDA_PIN,
+	.scl_pin	= AVILA_SCL_PIN,
+};
+
+static struct platform_device avila_i2c_controller = {
+	.name		= "IXP4XX-I2C",
+	.id		= 0,
+	.dev		= {
+		.platform_data = &avila_i2c_gpio_pins,
+	},
+	.num_resources	= 0
+};
+
+static struct resource avila_uart_resources[] = {
+	{
+		.start		= IXP4XX_UART1_BASE_PHYS,
+		.end		= IXP4XX_UART1_BASE_PHYS + 0x0fff,
+		.flags		= IORESOURCE_MEM
+	},
+	{
+		.start		= IXP4XX_UART2_BASE_PHYS,
+		.end		= IXP4XX_UART2_BASE_PHYS + 0x0fff,
+		.flags		= IORESOURCE_MEM
+	}
+};
+
+static struct plat_serial8250_port avila_uart_data[] = {
+	{
+		.mapbase	= IXP4XX_UART1_BASE_PHYS,
+		.membase	= (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
+		.irq		= IRQ_IXP4XX_UART1,
+		.flags		= UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
+		.iotype		= UPIO_MEM,
+		.regshift	= 2,
+		.uartclk	= IXP4XX_UART_XTAL,
+	},
+	{
+		.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 avila_uart = {
+	.name			= "serial8250",
+	.id			= PLAT8250_DEV_PLATFORM,
+	.dev.platform_data	= avila_uart_data,
+	.num_resources		= 2,
+	.resource		= avila_uart_resources
+};
+
+static struct platform_device *avila_devices[] __initdata = {
+	&avila_i2c_controller,
+	&avila_flash,
+	&avila_uart
+};
+
+static void __init avila_init(void)
+{
+	ixp4xx_sys_init();
+
+	avila_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
+	avila_flash_resource.end =
+		IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
+
+	platform_add_devices(avila_devices, ARRAY_SIZE(avila_devices));
+}
+
+MACHINE_START(AVILA, "Gateworks Avila Network Platform")
+	/* Maintainer: Deepak Saxena <dsaxena@plexity.net> */
+	.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	= avila_init,
+MACHINE_END
+
+ /*
+  * Loft is functionally equivalent to Avila except that it has a
+  * different number for the maximum PCI devices.  The MACHINE
+  * structure below is identical to Avila except for the comment.
+  */
+#ifdef CONFIG_MACH_LOFT
+MACHINE_START(LOFT, "Giant Shoulder Inc Loft board")
+	/* Maintainer: Tom Billman <kernel@giantshoulderinc.com> */
+	.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	= avila_init,
+MACHINE_END
+#endif
+

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

@@ -0,0 +1,39 @@
+/*
+ * include/asm-arm/arch-ixp4xx/avila.h
+ *
+ * Gateworks Avila platform specific definitions
+ *
+ * Author: Michael-Luke Jones <mlj28@cam.ac.uk>
+ *
+ * Based on ixdp425.h
+ * Author: Deepak Saxena <dsaxena@plexity.net>
+ *
+ * Copyright 2004 (c) MontaVista, Software, Inc.
+ *
+ * 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.
+ */
+
+#ifndef __ASM_ARCH_HARDWARE_H__
+#error "Do not include this directly, instead #include <asm/hardware.h>"
+#endif
+
+#define	AVILA_SDA_PIN		7
+#define	AVILA_SCL_PIN		6
+
+/*
+ * AVILA PCI IRQs
+ */
+#define AVILA_PCI_MAX_DEV	4
+#define LOFT_PCI_MAX_DEV    6
+#define AVILA_PCI_IRQ_LINES	4
+
+
+/* PCI controller GPIO to IRQ pin mappings */
+#define AVILA_PCI_INTA_PIN	11
+#define AVILA_PCI_INTB_PIN	10
+#define AVILA_PCI_INTC_PIN	9
+#define AVILA_PCI_INTD_PIN	8
+
+

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

@@ -42,6 +42,7 @@ extern unsigned int processor_id;
 
 /* Platform specific details */
 #include "ixdp425.h"
+#include "avila.h"
 #include "coyote.h"
 #include "prpmc1100.h"
 #include "nslu2.h"

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

@@ -78,6 +78,15 @@
 #define	IRQ_IXDP425_PCI_INTC	IRQ_IXP4XX_GPIO9
 #define	IRQ_IXDP425_PCI_INTD	IRQ_IXP4XX_GPIO8
 
+/*
+ * Gateworks Avila board IRQs
+ */
+#define	IRQ_AVILA_PCI_INTA	IRQ_IXP4XX_GPIO11
+#define	IRQ_AVILA_PCI_INTB	IRQ_IXP4XX_GPIO10
+#define	IRQ_AVILA_PCI_INTC	IRQ_IXP4XX_GPIO9
+#define	IRQ_AVILA_PCI_INTD	IRQ_IXP4XX_GPIO8
+
+
 /*
  * PrPMC1100 Board IRQs
  */