linux/arch/arm/mach-iop32x/iq80321.c
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   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 * arch/arm/mach-iop32x/iq80321.c
   4 *
   5 * Board support code for the Intel IQ80321 platform.
   6 *
   7 * Author: Rory Bolt <rorybolt@pacbell.net>
   8 * Copyright (C) 2002 Rory Bolt
   9 * Copyright (C) 2004 Intel Corp.
  10 */
  11
  12#include <linux/mm.h>
  13#include <linux/init.h>
  14#include <linux/kernel.h>
  15#include <linux/pci.h>
  16#include <linux/string.h>
  17#include <linux/serial_core.h>
  18#include <linux/serial_8250.h>
  19#include <linux/mtd/physmap.h>
  20#include <linux/platform_device.h>
  21#include <linux/io.h>
  22#include <linux/gpio/machine.h>
  23#include <mach/hardware.h>
  24#include <asm/irq.h>
  25#include <asm/mach/arch.h>
  26#include <asm/mach/map.h>
  27#include <asm/mach/pci.h>
  28#include <asm/mach/time.h>
  29#include <asm/mach-types.h>
  30#include <asm/page.h>
  31#include <asm/pgtable.h>
  32#include <mach/time.h>
  33#include "gpio-iop32x.h"
  34
  35/*
  36 * IQ80321 timer tick configuration.
  37 */
  38static void __init iq80321_timer_init(void)
  39{
  40        /* 33.333 MHz crystal.  */
  41        iop_init_time(200000000);
  42}
  43
  44
  45/*
  46 * IQ80321 I/O.
  47 */
  48static struct map_desc iq80321_io_desc[] __initdata = {
  49        {       /* on-board devices */
  50                .virtual        = IQ80321_UART,
  51                .pfn            = __phys_to_pfn(IQ80321_UART),
  52                .length         = 0x00100000,
  53                .type           = MT_DEVICE,
  54        },
  55};
  56
  57void __init iq80321_map_io(void)
  58{
  59        iop3xx_map_io();
  60        iotable_init(iq80321_io_desc, ARRAY_SIZE(iq80321_io_desc));
  61}
  62
  63
  64/*
  65 * IQ80321 PCI.
  66 */
  67static int __init
  68iq80321_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
  69{
  70        int irq;
  71
  72        if ((slot == 2 || slot == 6) && pin == 1) {
  73                /* PCI-X Slot INTA */
  74                irq = IRQ_IOP32X_XINT2;
  75        } else if ((slot == 2 || slot == 6) && pin == 2) {
  76                /* PCI-X Slot INTA */
  77                irq = IRQ_IOP32X_XINT3;
  78        } else if ((slot == 2 || slot == 6) && pin == 3) {
  79                /* PCI-X Slot INTA */
  80                irq = IRQ_IOP32X_XINT0;
  81        } else if ((slot == 2 || slot == 6) && pin == 4) {
  82                /* PCI-X Slot INTA */
  83                irq = IRQ_IOP32X_XINT1;
  84        } else if (slot == 4 || slot == 8) {
  85                /* Gig-E */
  86                irq = IRQ_IOP32X_XINT0;
  87        } else {
  88                printk(KERN_ERR "iq80321_pci_map_irq() called for unknown "
  89                        "device PCI:%d:%d:%d\n", dev->bus->number,
  90                        PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
  91                irq = -1;
  92        }
  93
  94        return irq;
  95}
  96
  97static struct hw_pci iq80321_pci __initdata = {
  98        .nr_controllers = 1,
  99        .ops            = &iop3xx_ops,
 100        .setup          = iop3xx_pci_setup,
 101        .preinit        = iop3xx_pci_preinit_cond,
 102        .map_irq        = iq80321_pci_map_irq,
 103};
 104
 105static int __init iq80321_pci_init(void)
 106{
 107        if ((iop3xx_get_init_atu() == IOP3XX_INIT_ATU_ENABLE) &&
 108                machine_is_iq80321())
 109                pci_common_init(&iq80321_pci);
 110
 111        return 0;
 112}
 113
 114subsys_initcall(iq80321_pci_init);
 115
 116
 117/*
 118 * IQ80321 machine initialisation.
 119 */
 120static struct physmap_flash_data iq80321_flash_data = {
 121        .width          = 1,
 122};
 123
 124static struct resource iq80321_flash_resource = {
 125        .start          = 0xf0000000,
 126        .end            = 0xf07fffff,
 127        .flags          = IORESOURCE_MEM,
 128};
 129
 130static struct platform_device iq80321_flash_device = {
 131        .name           = "physmap-flash",
 132        .id             = 0,
 133        .dev            = {
 134                .platform_data  = &iq80321_flash_data,
 135        },
 136        .num_resources  = 1,
 137        .resource       = &iq80321_flash_resource,
 138};
 139
 140static struct plat_serial8250_port iq80321_serial_port[] = {
 141        {
 142                .mapbase        = IQ80321_UART,
 143                .membase        = (char *)IQ80321_UART,
 144                .irq            = IRQ_IOP32X_XINT1,
 145                .flags          = UPF_SKIP_TEST,
 146                .iotype         = UPIO_MEM,
 147                .regshift       = 0,
 148                .uartclk        = 1843200,
 149        },
 150        { },
 151};
 152
 153static struct resource iq80321_uart_resource = {
 154        .start          = IQ80321_UART,
 155        .end            = IQ80321_UART + 7,
 156        .flags          = IORESOURCE_MEM,
 157};
 158
 159static struct platform_device iq80321_serial_device = {
 160        .name           = "serial8250",
 161        .id             = PLAT8250_DEV_PLATFORM,
 162        .dev            = {
 163                .platform_data          = iq80321_serial_port,
 164        },
 165        .num_resources  = 1,
 166        .resource       = &iq80321_uart_resource,
 167};
 168
 169static void __init iq80321_init_machine(void)
 170{
 171        register_iop32x_gpio();
 172        gpiod_add_lookup_table(&iop3xx_i2c0_gpio_lookup);
 173        gpiod_add_lookup_table(&iop3xx_i2c1_gpio_lookup);
 174        platform_device_register(&iop3xx_i2c0_device);
 175        platform_device_register(&iop3xx_i2c1_device);
 176        platform_device_register(&iq80321_flash_device);
 177        platform_device_register(&iq80321_serial_device);
 178        platform_device_register(&iop3xx_dma_0_channel);
 179        platform_device_register(&iop3xx_dma_1_channel);
 180        platform_device_register(&iop3xx_aau_channel);
 181}
 182
 183MACHINE_START(IQ80321, "Intel IQ80321")
 184        /* Maintainer: Intel Corp. */
 185        .atag_offset    = 0x100,
 186        .map_io         = iq80321_map_io,
 187        .init_irq       = iop32x_init_irq,
 188        .init_time      = iq80321_timer_init,
 189        .init_machine   = iq80321_init_machine,
 190        .restart        = iop3xx_restart,
 191MACHINE_END
 192