[ARM] 3850/1: iop3xx: add thecus n2100 support

Add support for the Thecus n2100 (80219-based.)

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

4 files changed, 260 insertions, 1 deletions

diff --git a/arch/arm/mach-iop32x/Kconfig b/arch/arm/mach-iop32x/Kconfig
index d7abfaa525c3..0a397a4a6ac9 100644
--- a/arch/arm/mach-iop32x/Kconfig
+++ b/arch/arm/mach-iop32x/Kconfig
@@ -17,6 +17,12 @@ config ARCH_IQ31244
 	  evaluation kit for the Intel 80219 processor (a IOP321 variant)
 	  or the IQ31244 evaluation kit for the IOP321 processor.
 
+config MACH_N2100
+	bool "Enable support for the Thecus n2100"
+	help
+	  Say Y here if you want to run your kernel on the Thecus n2100
+	  NAS appliance.
+
 endmenu
 
 endif
diff --git a/arch/arm/mach-iop32x/Makefile b/arch/arm/mach-iop32x/Makefile
index af1747ae392d..9c62470cd4f5 100644
--- a/arch/arm/mach-iop32x/Makefile
+++ b/arch/arm/mach-iop32x/Makefile
@@ -9,3 +9,4 @@ obj-			:=
 
 obj-$(CONFIG_ARCH_IQ80321) += iq80321.o
 obj-$(CONFIG_ARCH_IQ31244) += iq31244.o
+obj-$(CONFIG_MACH_N2100) += n2100.o
diff --git a/arch/arm/mach-iop32x/irq.c b/arch/arm/mach-iop32x/irq.c
index 21294be5a369..17fb94e6e29f 100644
--- a/arch/arm/mach-iop32x/irq.c
+++ b/arch/arm/mach-iop32x/irq.c
@@ -63,7 +63,8 @@ void __init iop32x_init_irq(void)
 	intctl_write(0);
 	intstr_write(0);
 	if (machine_is_iq80321() ||
-	    machine_is_iq31244())
+	    machine_is_iq31244() ||
+	    machine_is_n2100())
 		*IOP3XX_PCIIRSR = 0x0f;
 
 	for (i = 0; i < NR_IRQS; i++) {
diff --git a/arch/arm/mach-iop32x/n2100.c b/arch/arm/mach-iop32x/n2100.c
new file mode 100644
index 000000000000..a2c94a47b2b2
--- /dev/null
+++ b/arch/arm/mach-iop32x/n2100.c
@@ -0,0 +1,251 @@
+/*
+ * arch/arm/mach-iop32x/n2100.c
+ *
+ * Board support code for the Thecus N2100 platform.
+ *
+ * Author: Rory Bolt <rorybolt@pacbell.net>
+ * Copyright (C) 2002 Rory Bolt
+ * Copyright 2003 (c) MontaVista, Software, Inc.
+ * Copyright (C) 2004 Intel Corp.
+ *
+ * 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.
+ */
+
+#include <linux/mm.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/pm.h>
+#include <linux/string.h>
+#include <linux/slab.h>
+#include <linux/serial_core.h>
+#include <linux/serial_8250.h>
+#include <linux/mtd/physmap.h>
+#include <linux/platform_device.h>
+#include <linux/reboot.h>
+#include <asm/hardware.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/pci.h>
+#include <asm/mach/time.h>
+#include <asm/mach-types.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+
+/*
+ * N2100 timer tick configuration.
+ */
+static void __init n2100_timer_init(void)
+{
+	/* 33.000 MHz crystal.  */
+	iop3xx_init_time(198000000);
+}
+
+static struct sys_timer n2100_timer = {
+	.init		= n2100_timer_init,
+	.offset		= iop3xx_gettimeoffset,
+};
+
+
+/*
+ * N2100 I/O.
+ */
+static struct map_desc n2100_io_desc[] __initdata = {
+	{	/* on-board devices */
+		.virtual	= N2100_UART,
+		.pfn		= __phys_to_pfn(N2100_UART),
+		.length		= 0x00100000,
+		.type		= MT_DEVICE
+	},
+};
+
+void __init n2100_map_io(void)
+{
+	iop3xx_map_io();
+	iotable_init(n2100_io_desc, ARRAY_SIZE(n2100_io_desc));
+}
+
+
+/*
+ * N2100 PCI.
+ */
+static inline int __init
+n2100_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+{
+	int irq;
+
+	if (PCI_SLOT(dev->devfn) == 1) {
+		/* RTL8110SB #1 */
+		irq = IRQ_IOP32X_XINT0;
+	} else if (PCI_SLOT(dev->devfn) == 2) {
+		/* RTL8110SB #2 */
+		irq = IRQ_IOP32X_XINT1;
+	} else if (PCI_SLOT(dev->devfn) == 3) {
+		/* Sil3512 */
+		irq = IRQ_IOP32X_XINT2;
+	} else if (PCI_SLOT(dev->devfn) == 4 && pin == 1) {
+		/* VT6212 INTA */
+		irq = IRQ_IOP32X_XINT1;
+	} else if (PCI_SLOT(dev->devfn) == 4 && pin == 2) {
+		/* VT6212 INTB */
+		irq = IRQ_IOP32X_XINT0;
+	} else if (PCI_SLOT(dev->devfn) == 4 && pin == 3) {
+		/* VT6212 INTC */
+		irq = IRQ_IOP32X_XINT2;
+	} else if (PCI_SLOT(dev->devfn) == 5) {
+		/* Mini-PCI slot */
+		irq = IRQ_IOP32X_XINT3;
+	} else {
+		printk(KERN_ERR "n2100_pci_map_irq() called for unknown "
+			"device PCI:%d:%d:%d\n", dev->bus->number,
+			PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
+		irq = -1;
+	}
+
+	return irq;
+}
+
+static struct hw_pci n2100_pci __initdata = {
+	.swizzle	= pci_std_swizzle,
+	.nr_controllers = 1,
+	.setup		= iop3xx_pci_setup,
+	.preinit	= iop3xx_pci_preinit,
+	.scan		= iop3xx_pci_scan_bus,
+	.map_irq	= n2100_pci_map_irq,
+};
+
+static int __init n2100_pci_init(void)
+{
+	if (machine_is_n2100())
+		pci_common_init(&n2100_pci);
+
+	return 0;
+}
+
+subsys_initcall(n2100_pci_init);
+
+
+/*
+ * N2100 machine initialisation.
+ */
+static struct physmap_flash_data n2100_flash_data = {
+	.width		= 2,
+};
+
+static struct resource n2100_flash_resource = {
+	.start		= 0xf0000000,
+	.end		= 0xf0ffffff,
+	.flags		= IORESOURCE_MEM,
+};
+
+static struct platform_device n2100_flash_device = {
+	.name		= "physmap-flash",
+	.id		= 0,
+	.dev		= {
+		.platform_data	= &n2100_flash_data,
+	},
+	.num_resources	= 1,
+	.resource	= &n2100_flash_resource,
+};
+
+
+static struct plat_serial8250_port n2100_serial_port[] = {
+	{
+		.mapbase	= N2100_UART,
+		.membase	= (char *)N2100_UART,
+		.irq		= 0,
+		.flags		= UPF_SKIP_TEST,
+		.iotype		= UPIO_MEM,
+		.regshift	= 0,
+		.uartclk	= 1843200,
+	},
+	{ },
+};
+
+static struct resource n2100_uart_resource = {
+	.start		= N2100_UART,
+	.end		= N2100_UART + 7,
+	.flags		= IORESOURCE_MEM,
+};
+
+static struct platform_device n2100_serial_device = {
+	.name		= "serial8250",
+	.id		= PLAT8250_DEV_PLATFORM,
+	.dev		= {
+		.platform_data		= n2100_serial_port,
+	},
+	.num_resources	= 1,
+	.resource	= &n2100_uart_resource,
+};
+
+
+/*
+ * Pull PCA9532 GPIO #8 low to power off the machine.
+ */
+static void n2100_power_off(void)
+{
+	local_irq_disable();
+
+	/* Start condition, I2C address of PCA9532, write transaction.  */
+	*IOP3XX_IDBR0 = 0xc0;
+	*IOP3XX_ICR0 = 0xe9;
+	mdelay(1);
+
+	/* Write address 0x08.  */
+	*IOP3XX_IDBR0 = 0x08;
+	*IOP3XX_ICR0 = 0xe8;
+	mdelay(1);
+
+	/* Write data 0x01, stop condition.  */
+	*IOP3XX_IDBR0 = 0x01;
+	*IOP3XX_ICR0 = 0xea;
+
+	while (1)
+		;
+}
+
+
+static struct timer_list power_button_poll_timer;
+
+static void power_button_poll(unsigned long dummy)
+{
+	if (gpio_line_get(N2100_POWER_BUTTON) == 0) {
+		ctrl_alt_del();
+		return;
+	}
+
+	power_button_poll_timer.expires = jiffies + (HZ / 10);
+	add_timer(&power_button_poll_timer);
+}
+
+
+static void __init n2100_init_machine(void)
+{
+	platform_device_register(&iop3xx_i2c0_device);
+	platform_device_register(&n2100_flash_device);
+	platform_device_register(&n2100_serial_device);
+
+	pm_power_off = n2100_power_off;
+
+	init_timer(&power_button_poll_timer);
+	power_button_poll_timer.function = power_button_poll;
+	power_button_poll_timer.expires = jiffies + (HZ / 10);
+	add_timer(&power_button_poll_timer);
+}
+
+MACHINE_START(N2100, "Thecus N2100")
+	/* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
+	.phys_io	= N2100_UART,
+	.io_pg_offst	= ((N2100_UART) >> 18) & 0xfffc,
+	.boot_params	= 0xa0000100,
+	.map_io		= n2100_map_io,
+	.init_irq	= iop32x_init_irq,
+	.timer		= &n2100_timer,
+	.init_machine	= n2100_init_machine,
+MACHINE_END