1 files changed, 367 insertions, 0 deletions
diff --git a/arch/arm/mach-iop32x/n2100.c b/arch/arm/mach-iop32x/n2100.c
new file mode 100644
index 000000000..bb1e2e11b
--- /dev/null
+++ b/arch/arm/mach-iop32x/n2100.c
@@ -0,0 +1,367 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * 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.
+ */
+
+#include <linux/mm.h>
+#include <linux/init.h>
+#include <linux/f75375s.h>
+#include <linux/leds-pca9532.h>
+#include <linux/delay.h>
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/pm.h>
+#include <linux/string.h>
+#include <linux/serial_core.h>
+#include <linux/serial_8250.h>
+#include <linux/mtd/physmap.h>
+#include <linux/i2c.h>
+#include <linux/platform_device.h>
+#include <linux/reboot.h>
+#include <linux/io.h>
+#include <linux/gpio.h>
+#include <linux/gpio/machine.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 "hardware.h"
+#include "irqs.h"
+#include "gpio-iop32x.h"
+
+/*
+ * N2100 timer tick configuration.
+ */
+static void __init n2100_timer_init(void)
+{
+	/* 33.000 MHz crystal.  */
+	iop_init_time(198000000);
+}
+
+
+/*
+ * 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 int n2100_pci_map_irq(const 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_XINT3;
+	} 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 = {
+	.nr_controllers = 1,
+	.ops		= &iop3xx_ops,
+	.setup		= iop3xx_pci_setup,
+	.preinit	= iop3xx_pci_preinit,
+	.map_irq	= n2100_pci_map_irq,
+};
+
+/*
+ * Both r8169 chips on the n2100 exhibit PCI parity problems.  Turn
+ * off parity reporting for both ports so we don't get error interrupts
+ * for them.
+ */
+static void n2100_fixup_r8169(struct pci_dev *dev)
+{
+	if (dev->bus->number == 0 &&
+	    (dev->devfn == PCI_DEVFN(1, 0) ||
+	     dev->devfn == PCI_DEVFN(2, 0)))
+		pci_disable_parity(dev);
+}
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_REALTEK, PCI_ANY_ID, n2100_fixup_r8169);
+
+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 | UPF_AUTO_IRQ | UPF_SHARE_IRQ,
+		.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,
+};
+
+static struct f75375s_platform_data n2100_f75375s = {
+	.pwm		= { 255, 255 },
+	.pwm_enable = { 0, 0 },
+};
+
+static struct pca9532_platform_data n2100_leds = {
+	.leds = {
+	{	.name = "n2100:red:satafail0",
+		.state = PCA9532_OFF,
+		.type = PCA9532_TYPE_LED,
+	},
+	{	.name = "n2100:red:satafail1",
+		.state = PCA9532_OFF,
+		.type = PCA9532_TYPE_LED,
+	},
+	{	.name = "n2100:blue:usb",
+		.state = PCA9532_OFF,
+		.type = PCA9532_TYPE_LED,
+	},
+	{ 	.type = PCA9532_TYPE_NONE },
+
+	{ 	.type = PCA9532_TYPE_NONE },
+	{ 	.type = PCA9532_TYPE_NONE },
+	{ 	.type = PCA9532_TYPE_NONE },
+	{	.name = "n2100:red:usb",
+		.state = PCA9532_OFF,
+		.type = PCA9532_TYPE_LED,
+	},
+
+	{	.type = PCA9532_TYPE_NONE }, /* power OFF gpio */
+	{	.type = PCA9532_TYPE_NONE }, /* reset gpio */
+	{	.type = PCA9532_TYPE_NONE },
+	{	.type = PCA9532_TYPE_NONE },
+
+	{	.type = PCA9532_TYPE_NONE },
+	{	.name = "n2100:orange:system",
+		.state = PCA9532_OFF,
+		.type = PCA9532_TYPE_LED,
+	},
+	{	.name = "n2100:red:system",
+		.state = PCA9532_OFF,
+		.type = PCA9532_TYPE_LED,
+	},
+	{	.name = "N2100 beeper"  ,
+		.state =  PCA9532_OFF,
+		.type = PCA9532_TYPE_N2100_BEEP,
+	},
+	},
+	.psc = { 0, 0 },
+	.pwm = { 0, 0 },
+};
+
+static struct i2c_board_info __initdata n2100_i2c_devices[] = {
+	{
+		I2C_BOARD_INFO("rs5c372b", 0x32),
+	},
+	{
+		I2C_BOARD_INFO("f75375", 0x2e),
+		.platform_data = &n2100_f75375s,
+	},
+	{
+		I2C_BOARD_INFO("pca9532", 0x60),
+		.platform_data = &n2100_leds,
+	},
+};
+
+/*
+ * 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 void n2100_restart(enum reboot_mode mode, const char *cmd)
+{
+	int ret;
+
+	ret = gpio_direction_output(N2100_HARDWARE_RESET, 0);
+	if (ret) {
+		pr_crit("could not drive reset GPIO low\n");
+		return;
+	}
+	/* Wait for reset to happen */
+	while (1)
+		;
+}
+
+
+static struct timer_list power_button_poll_timer;
+
+static void power_button_poll(struct timer_list *unused)
+{
+	if (gpio_get_value(N2100_POWER_BUTTON) == 0) {
+		ctrl_alt_del();
+		return;
+	}
+
+	power_button_poll_timer.expires = jiffies + (HZ / 10);
+	add_timer(&power_button_poll_timer);
+}
+
+static int __init n2100_request_gpios(void)
+{
+	int ret;
+
+	if (!machine_is_n2100())
+		return 0;
+
+	ret = gpio_request(N2100_HARDWARE_RESET, "reset");
+	if (ret)
+		pr_err("could not request reset GPIO\n");
+
+	ret = gpio_request(N2100_POWER_BUTTON, "power");
+	if (ret)
+		pr_err("could not request power GPIO\n");
+	else {
+		ret = gpio_direction_input(N2100_POWER_BUTTON);
+		if (ret)
+			pr_err("could not set power GPIO as input\n");
+	}
+	/* Set up power button poll timer */
+	timer_setup(&power_button_poll_timer, power_button_poll, 0);
+	power_button_poll_timer.expires = jiffies + (HZ / 10);
+	add_timer(&power_button_poll_timer);
+	return 0;
+}
+device_initcall(n2100_request_gpios);
+
+static void __init n2100_init_machine(void)
+{
+	register_iop32x_gpio();
+	gpiod_add_lookup_table(&iop3xx_i2c0_gpio_lookup);
+	platform_device_register(&iop3xx_i2c0_device);
+	platform_device_register(&n2100_flash_device);
+	platform_device_register(&n2100_serial_device);
+	platform_device_register(&iop3xx_dma_0_channel);
+	platform_device_register(&iop3xx_dma_1_channel);
+
+	i2c_register_board_info(0, n2100_i2c_devices,
+		ARRAY_SIZE(n2100_i2c_devices));
+
+	pm_power_off = n2100_power_off;
+}
+
+MACHINE_START(N2100, "Thecus N2100")
+	/* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
+	.atag_offset	= 0x100,
+	.nr_irqs	= IOP32X_NR_IRQS,
+	.map_io		= n2100_map_io,
+	.init_irq	= iop32x_init_irq,
+	.init_time	= n2100_timer_init,
+	.init_machine	= n2100_init_machine,
+	.restart	= n2100_restart,
+MACHINE_END