193 lines
4.3 KiB
C
193 lines
4.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* arch/arm/mach-iop32x/iq80321.c
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*
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* Board support code for the Intel IQ80321 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 (C) 2004 Intel Corp.
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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/kernel.h>
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#include <linux/pci.h>
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#include <linux/string.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/platform_device.h>
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#include <linux/io.h>
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#include <linux/gpio/machine.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 "hardware.h"
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#include "irqs.h"
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#include "gpio-iop32x.h"
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/*
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* IQ80321 timer tick configuration.
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*/
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static void __init iq80321_timer_init(void)
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{
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/* 33.333 MHz crystal. */
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iop_init_time(200000000);
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}
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/*
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* IQ80321 I/O.
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*/
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static struct map_desc iq80321_io_desc[] __initdata = {
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{ /* on-board devices */
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.virtual = IQ80321_UART,
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.pfn = __phys_to_pfn(IQ80321_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 iq80321_map_io(void)
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{
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iop3xx_map_io();
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iotable_init(iq80321_io_desc, ARRAY_SIZE(iq80321_io_desc));
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}
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/*
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* IQ80321 PCI.
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*/
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static int __init
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iq80321_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
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{
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int irq;
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if ((slot == 2 || slot == 6) && pin == 1) {
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/* PCI-X Slot INTA */
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irq = IRQ_IOP32X_XINT2;
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} else if ((slot == 2 || slot == 6) && pin == 2) {
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/* PCI-X Slot INTA */
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irq = IRQ_IOP32X_XINT3;
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} else if ((slot == 2 || slot == 6) && pin == 3) {
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/* PCI-X Slot INTA */
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irq = IRQ_IOP32X_XINT0;
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} else if ((slot == 2 || slot == 6) && pin == 4) {
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/* PCI-X Slot INTA */
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irq = IRQ_IOP32X_XINT1;
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} else if (slot == 4 || slot == 8) {
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/* Gig-E */
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irq = IRQ_IOP32X_XINT0;
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} else {
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printk(KERN_ERR "iq80321_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 iq80321_pci __initdata = {
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.nr_controllers = 1,
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.ops = &iop3xx_ops,
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.setup = iop3xx_pci_setup,
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.preinit = iop3xx_pci_preinit_cond,
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.map_irq = iq80321_pci_map_irq,
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};
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static int __init iq80321_pci_init(void)
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{
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if ((iop3xx_get_init_atu() == IOP3XX_INIT_ATU_ENABLE) &&
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machine_is_iq80321())
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pci_common_init(&iq80321_pci);
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return 0;
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}
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subsys_initcall(iq80321_pci_init);
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/*
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* IQ80321 machine initialisation.
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*/
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static struct physmap_flash_data iq80321_flash_data = {
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.width = 1,
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};
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static struct resource iq80321_flash_resource = {
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.start = 0xf0000000,
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.end = 0xf07fffff,
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.flags = IORESOURCE_MEM,
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};
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static struct platform_device iq80321_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 = &iq80321_flash_data,
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},
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.num_resources = 1,
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.resource = &iq80321_flash_resource,
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};
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static struct plat_serial8250_port iq80321_serial_port[] = {
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{
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.mapbase = IQ80321_UART,
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.membase = (char *)IQ80321_UART,
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.irq = IRQ_IOP32X_XINT1,
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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 iq80321_uart_resource = {
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.start = IQ80321_UART,
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.end = IQ80321_UART + 7,
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.flags = IORESOURCE_MEM,
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};
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static struct platform_device iq80321_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 = iq80321_serial_port,
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},
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.num_resources = 1,
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.resource = &iq80321_uart_resource,
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};
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static void __init iq80321_init_machine(void)
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{
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register_iop32x_gpio();
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gpiod_add_lookup_table(&iop3xx_i2c0_gpio_lookup);
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gpiod_add_lookup_table(&iop3xx_i2c1_gpio_lookup);
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platform_device_register(&iop3xx_i2c0_device);
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platform_device_register(&iop3xx_i2c1_device);
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platform_device_register(&iq80321_flash_device);
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platform_device_register(&iq80321_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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platform_device_register(&iop3xx_aau_channel);
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}
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MACHINE_START(IQ80321, "Intel IQ80321")
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/* Maintainer: Intel Corp. */
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.atag_offset = 0x100,
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.nr_irqs = IOP32X_NR_IRQS,
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.map_io = iq80321_map_io,
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.init_irq = iop32x_init_irq,
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.init_time = iq80321_timer_init,
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.init_machine = iq80321_init_machine,
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.restart = iop3xx_restart,
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MACHINE_END
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