[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>

7 files changed, 291 insertions, 2 deletions

diff --git a/arch/arm/mach-ixp4xx/Kconfig b/arch/arm/mach-ixp4xx/Kconfig
index e316bd93313f..8a339cdfe222 100644
--- a/arch/arm/mach-ixp4xx/Kconfig
+++ b/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
 
 #
diff --git a/arch/arm/mach-ixp4xx/Makefile b/arch/arm/mach-ixp4xx/Makefile
index 640315d8b96a..746e297284ed 100644
--- a/arch/arm/mach-ixp4xx/Makefile
+++ b/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
diff --git a/arch/arm/mach-ixp4xx/avila-pci.c b/arch/arm/mach-ixp4xx/avila-pci.c
new file mode 100644
index 000000000000..3f867691d9f2
--- /dev/null
+++ b/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);
+
diff --git a/arch/arm/mach-ixp4xx/avila-setup.c b/arch/arm/mach-ixp4xx/avila-setup.c
new file mode 100644
index 000000000000..9f09f94593a6
--- /dev/null
+++ b/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
+
diff --git a/include/asm-arm/arch-ixp4xx/avila.h b/include/asm-arm/arch-ixp4xx/avila.h
new file mode 100644
index 000000000000..0dfea0ccd6ba
--- /dev/null
+++ b/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
+
+
diff --git a/include/asm-arm/arch-ixp4xx/hardware.h b/include/asm-arm/arch-ixp4xx/hardware.h
index 6acb69c95ef9..88fd0877dcc1 100644
--- a/include/asm-arm/arch-ixp4xx/hardware.h
+++ b/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"
diff --git a/include/asm-arm/arch-ixp4xx/irqs.h b/include/asm-arm/arch-ixp4xx/irqs.h
index f24b763ca18e..e44a563d00ff 100644
--- a/include/asm-arm/arch-ixp4xx/irqs.h
+++ b/include/asm-arm/arch-ixp4xx/irqs.h
@@ -79,6 +79,15 @@
 #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
  */
 #define IRQ_PRPMC1100_PCI_INTA  IRQ_IXP4XX_GPIO11