arch/arm/mach-iop32x/iq80321.c

   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 <asm/irq.h>
  24 #include <asm/mach/arch.h>
  25 #include <asm/mach/map.h>
  26 #include <asm/mach/pci.h>
  27 #include <asm/mach/time.h>
  28 #include <asm/mach-types.h>
  29 #include <asm/page.h>
  30
  31 #include "hardware.h"
  32 #include "irqs.h"
  33 #include "gpio-iop32x.h"
  34
  35 /*
  36  * IQ80321 timer tick configuration.
  37  */
  38 static 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  */
  48 static 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
  57 void __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  */
  67 static int __init
  68 iq80321_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
  97 static 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
 105 static 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
 114 subsys_initcall(iq80321_pci_init);
 115
 116
 117 /*
 118  * IQ80321 machine initialisation.
 119  */
 120 static struct physmap_flash_data iq80321_flash_data = {
 121         .width          = 1,
 122 };
 123
 124 static struct resource iq80321_flash_resource = {
 125         .start          = 0xf0000000,
 126         .end            = 0xf07fffff,
 127         .flags          = IORESOURCE_MEM,
 128 };
 129
 130 static 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
 140 static 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
 153 static struct resource iq80321_uart_resource = {
 154         .start          = IQ80321_UART,
 155         .end            = IQ80321_UART + 7,
 156         .flags          = IORESOURCE_MEM,
 157 };
 158
 159 static 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
 169 static 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
 183 MACHINE_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,
 191 MACHINE_END