/* * 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/i2c.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 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, }; /* * Both r8169 chips on the n2100 exhibit PCI parity problems. Set * the ->broken_parity_status flag for both ports so that the r8169 * driver knows it should ignore error interrupts. */ 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))) dev->broken_parity_status = 1; } 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, .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 i2c_board_info __initdata n2100_i2c_devices[] = { { I2C_BOARD_INFO("rtc-rs5c372", 0x32), .type = "rs5c372b", }, }; /* * 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); 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; 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