| /* |
| * 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> |
| #include <asm/arch/time.h> |
| |
| /* |
| * N2100 timer tick configuration. |
| */ |
| static void __init n2100_timer_init(void) |
| { |
| /* 33.000 MHz crystal. */ |
| iop_init_time(198000000); |
| } |
| |
| static struct sys_timer n2100_timer = { |
| .init = n2100_timer_init, |
| .offset = iop_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_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 = { |
| .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 |