279 строки
6.2 KiB
C
279 строки
6.2 KiB
C
/*
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* arch/arm/mach-iop32x/n2100.c
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*
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* Board support code for the Thecus N2100 platform.
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*
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* Author: Rory Bolt <rorybolt@pacbell.net>
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* Copyright (C) 2002 Rory Bolt
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* Copyright 2003 (c) MontaVista, Software, Inc.
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* Copyright (C) 2004 Intel Corp.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#include <linux/mm.h>
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/kernel.h>
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#include <linux/pci.h>
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#include <linux/pm.h>
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#include <linux/string.h>
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#include <linux/slab.h>
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#include <linux/serial_core.h>
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#include <linux/serial_8250.h>
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#include <linux/mtd/physmap.h>
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#include <linux/i2c.h>
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#include <linux/platform_device.h>
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#include <linux/reboot.h>
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#include <asm/hardware.h>
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#include <asm/io.h>
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#include <asm/irq.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/map.h>
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#include <asm/mach/pci.h>
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#include <asm/mach/time.h>
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#include <asm/mach-types.h>
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#include <asm/page.h>
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#include <asm/pgtable.h>
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#include <asm/arch/time.h>
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/*
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* N2100 timer tick configuration.
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*/
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static void __init n2100_timer_init(void)
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{
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/* 33.000 MHz crystal. */
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iop_init_time(198000000);
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}
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static struct sys_timer n2100_timer = {
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.init = n2100_timer_init,
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.offset = iop_gettimeoffset,
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};
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/*
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* N2100 I/O.
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*/
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static struct map_desc n2100_io_desc[] __initdata = {
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{ /* on-board devices */
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.virtual = N2100_UART,
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.pfn = __phys_to_pfn(N2100_UART),
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.length = 0x00100000,
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.type = MT_DEVICE
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},
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};
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void __init n2100_map_io(void)
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{
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iop3xx_map_io();
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iotable_init(n2100_io_desc, ARRAY_SIZE(n2100_io_desc));
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}
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/*
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* N2100 PCI.
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*/
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static int __init
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n2100_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
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{
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int irq;
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if (PCI_SLOT(dev->devfn) == 1) {
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/* RTL8110SB #1 */
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irq = IRQ_IOP32X_XINT0;
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} else if (PCI_SLOT(dev->devfn) == 2) {
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/* RTL8110SB #2 */
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irq = IRQ_IOP32X_XINT3;
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} else if (PCI_SLOT(dev->devfn) == 3) {
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/* Sil3512 */
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irq = IRQ_IOP32X_XINT2;
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} else if (PCI_SLOT(dev->devfn) == 4 && pin == 1) {
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/* VT6212 INTA */
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irq = IRQ_IOP32X_XINT1;
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} else if (PCI_SLOT(dev->devfn) == 4 && pin == 2) {
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/* VT6212 INTB */
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irq = IRQ_IOP32X_XINT0;
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} else if (PCI_SLOT(dev->devfn) == 4 && pin == 3) {
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/* VT6212 INTC */
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irq = IRQ_IOP32X_XINT2;
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} else if (PCI_SLOT(dev->devfn) == 5) {
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/* Mini-PCI slot */
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irq = IRQ_IOP32X_XINT3;
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} else {
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printk(KERN_ERR "n2100_pci_map_irq() called for unknown "
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"device PCI:%d:%d:%d\n", dev->bus->number,
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PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
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irq = -1;
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}
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return irq;
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}
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static struct hw_pci n2100_pci __initdata = {
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.swizzle = pci_std_swizzle,
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.nr_controllers = 1,
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.setup = iop3xx_pci_setup,
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.preinit = iop3xx_pci_preinit,
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.scan = iop3xx_pci_scan_bus,
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.map_irq = n2100_pci_map_irq,
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};
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/*
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* Both r8169 chips on the n2100 exhibit PCI parity problems. Set
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* the ->broken_parity_status flag for both ports so that the r8169
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* driver knows it should ignore error interrupts.
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*/
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static void n2100_fixup_r8169(struct pci_dev *dev)
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{
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if (dev->bus->number == 0 &&
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(dev->devfn == PCI_DEVFN(1, 0) ||
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dev->devfn == PCI_DEVFN(2, 0)))
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dev->broken_parity_status = 1;
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}
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DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_REALTEK, PCI_ANY_ID, n2100_fixup_r8169);
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static int __init n2100_pci_init(void)
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{
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if (machine_is_n2100())
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pci_common_init(&n2100_pci);
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return 0;
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}
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subsys_initcall(n2100_pci_init);
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/*
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* N2100 machine initialisation.
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*/
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static struct physmap_flash_data n2100_flash_data = {
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.width = 2,
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};
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static struct resource n2100_flash_resource = {
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.start = 0xf0000000,
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.end = 0xf0ffffff,
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.flags = IORESOURCE_MEM,
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};
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static struct platform_device n2100_flash_device = {
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.name = "physmap-flash",
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.id = 0,
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.dev = {
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.platform_data = &n2100_flash_data,
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},
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.num_resources = 1,
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.resource = &n2100_flash_resource,
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};
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static struct plat_serial8250_port n2100_serial_port[] = {
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{
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.mapbase = N2100_UART,
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.membase = (char *)N2100_UART,
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.irq = 0,
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.flags = UPF_SKIP_TEST,
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.iotype = UPIO_MEM,
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.regshift = 0,
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.uartclk = 1843200,
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},
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{ },
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};
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static struct resource n2100_uart_resource = {
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.start = N2100_UART,
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.end = N2100_UART + 7,
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.flags = IORESOURCE_MEM,
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};
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static struct platform_device n2100_serial_device = {
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.name = "serial8250",
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.id = PLAT8250_DEV_PLATFORM,
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.dev = {
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.platform_data = n2100_serial_port,
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},
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.num_resources = 1,
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.resource = &n2100_uart_resource,
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};
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static struct i2c_board_info __initdata n2100_i2c_devices[] = {
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{
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I2C_BOARD_INFO("rtc-rs5c372", 0x32),
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.type = "rs5c372b",
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},
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};
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/*
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* Pull PCA9532 GPIO #8 low to power off the machine.
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*/
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static void n2100_power_off(void)
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{
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local_irq_disable();
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/* Start condition, I2C address of PCA9532, write transaction. */
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*IOP3XX_IDBR0 = 0xc0;
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*IOP3XX_ICR0 = 0xe9;
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mdelay(1);
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/* Write address 0x08. */
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*IOP3XX_IDBR0 = 0x08;
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*IOP3XX_ICR0 = 0xe8;
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mdelay(1);
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/* Write data 0x01, stop condition. */
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*IOP3XX_IDBR0 = 0x01;
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*IOP3XX_ICR0 = 0xea;
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while (1)
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;
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}
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static struct timer_list power_button_poll_timer;
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static void power_button_poll(unsigned long dummy)
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{
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if (gpio_line_get(N2100_POWER_BUTTON) == 0) {
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ctrl_alt_del();
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return;
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}
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power_button_poll_timer.expires = jiffies + (HZ / 10);
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add_timer(&power_button_poll_timer);
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}
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static void __init n2100_init_machine(void)
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{
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platform_device_register(&iop3xx_i2c0_device);
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platform_device_register(&n2100_flash_device);
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platform_device_register(&n2100_serial_device);
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platform_device_register(&iop3xx_dma_0_channel);
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platform_device_register(&iop3xx_dma_1_channel);
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i2c_register_board_info(0, n2100_i2c_devices,
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ARRAY_SIZE(n2100_i2c_devices));
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pm_power_off = n2100_power_off;
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init_timer(&power_button_poll_timer);
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power_button_poll_timer.function = power_button_poll;
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power_button_poll_timer.expires = jiffies + (HZ / 10);
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add_timer(&power_button_poll_timer);
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}
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MACHINE_START(N2100, "Thecus N2100")
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/* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
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.phys_io = N2100_UART,
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.io_pg_offst = ((N2100_UART) >> 18) & 0xfffc,
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.boot_params = 0xa0000100,
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.map_io = n2100_map_io,
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.init_irq = iop32x_init_irq,
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.timer = &n2100_timer,
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.init_machine = n2100_init_machine,
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MACHINE_END
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