arch/arm/mach-iop32x/glantank.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * arch/arm/mach-iop32x/glantank.c
   4  *
   5  * Board support code for the GLAN Tank.
   6  *
   7  * Copyright (C) 2006, 2007 Martin Michlmayr <tbm@cyrius.com>
   8  * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
   9  */
  10
  11 #include <linux/mm.h>
  12 #include <linux/init.h>
  13 #include <linux/f75375s.h>
  14 #include <linux/kernel.h>
  15 #include <linux/pci.h>
  16 #include <linux/pm.h>
  17 #include <linux/string.h>
  18 #include <linux/serial_core.h>
  19 #include <linux/serial_8250.h>
  20 #include <linux/mtd/physmap.h>
  21 #include <linux/i2c.h>
  22 #include <linux/platform_device.h>
  23 #include <linux/io.h>
  24 #include <mach/hardware.h>
  25 #include <asm/irq.h>
  26 #include <asm/mach/arch.h>
  27 #include <asm/mach/map.h>
  28 #include <asm/mach/pci.h>
  29 #include <asm/mach/time.h>
  30 #include <asm/mach-types.h>
  31 #include <asm/page.h>
  32 #include <mach/time.h>
  33 #include "gpio-iop32x.h"
  34
  35 /*
  36  * GLAN Tank timer tick configuration.
  37  */
  38 static void __init glantank_timer_init(void)
  39 {
  40         /* 33.333 MHz crystal.  */
  41         iop_init_time(200000000);
  42 }
  43
  44
  45 /*
  46  * GLAN Tank I/O.
  47  */
  48 static struct map_desc glantank_io_desc[] __initdata = {
  49         {       /* on-board devices */
  50                 .virtual        = GLANTANK_UART,
  51                 .pfn            = __phys_to_pfn(GLANTANK_UART),
  52                 .length         = 0x00100000,
  53                 .type           = MT_DEVICE
  54         },
  55 };
  56
  57 void __init glantank_map_io(void)
  58 {
  59         iop3xx_map_io();
  60         iotable_init(glantank_io_desc, ARRAY_SIZE(glantank_io_desc));
  61 }
  62
  63
  64 /*
  65  * GLAN Tank PCI.
  66  */
  67 #define INTA    IRQ_IOP32X_XINT0
  68 #define INTB    IRQ_IOP32X_XINT1
  69 #define INTC    IRQ_IOP32X_XINT2
  70 #define INTD    IRQ_IOP32X_XINT3
  71
  72 static int __init
  73 glantank_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
  74 {
  75         static int pci_irq_table[][4] = {
  76                 /*
  77                  * PCI IDSEL/INTPIN->INTLINE
  78                  * A       B       C       D
  79                  */
  80                 {INTD, INTD, INTD, INTD}, /* UART (8250) */
  81                 {INTA, INTA, INTA, INTA}, /* Ethernet (E1000) */
  82                 {INTB, INTB, INTB, INTB}, /* IDE (AEC6280R) */
  83                 {INTC, INTC, INTC, INTC}, /* USB (NEC) */
  84         };
  85
  86         BUG_ON(pin < 1 || pin > 4);
  87
  88         return pci_irq_table[slot % 4][pin - 1];
  89 }
  90
  91 static struct hw_pci glantank_pci __initdata = {
  92         .nr_controllers = 1,
  93         .ops            = &iop3xx_ops,
  94         .setup          = iop3xx_pci_setup,
  95         .preinit        = iop3xx_pci_preinit,
  96         .map_irq        = glantank_pci_map_irq,
  97 };
  98
  99 static int __init glantank_pci_init(void)
 100 {
 101         if (machine_is_glantank())
 102                 pci_common_init(&glantank_pci);
 103
 104         return 0;
 105 }
 106
 107 subsys_initcall(glantank_pci_init);
 108
 109
 110 /*
 111  * GLAN Tank machine initialization.
 112  */
 113 static struct physmap_flash_data glantank_flash_data = {
 114         .width          = 2,
 115 };
 116
 117 static struct resource glantank_flash_resource = {
 118         .start          = 0xf0000000,
 119         .end            = 0xf007ffff,
 120         .flags          = IORESOURCE_MEM,
 121 };
 122
 123 static struct platform_device glantank_flash_device = {
 124         .name           = "physmap-flash",
 125         .id             = 0,
 126         .dev            = {
 127                 .platform_data  = &glantank_flash_data,
 128         },
 129         .num_resources  = 1,
 130         .resource       = &glantank_flash_resource,
 131 };
 132
 133 static struct plat_serial8250_port glantank_serial_port[] = {
 134         {
 135                 .mapbase        = GLANTANK_UART,
 136                 .membase        = (char *)GLANTANK_UART,
 137                 .irq            = IRQ_IOP32X_XINT3,
 138                 .flags          = UPF_SKIP_TEST,
 139                 .iotype         = UPIO_MEM,
 140                 .regshift       = 0,
 141                 .uartclk        = 1843200,
 142         },
 143         { },
 144 };
 145
 146 static struct resource glantank_uart_resource = {
 147         .start          = GLANTANK_UART,
 148         .end            = GLANTANK_UART + 7,
 149         .flags          = IORESOURCE_MEM,
 150 };
 151
 152 static struct platform_device glantank_serial_device = {
 153         .name           = "serial8250",
 154         .id             = PLAT8250_DEV_PLATFORM,
 155         .dev            = {
 156                 .platform_data          = glantank_serial_port,
 157         },
 158         .num_resources  = 1,
 159         .resource       = &glantank_uart_resource,
 160 };
 161
 162 static struct f75375s_platform_data glantank_f75375s = {
 163         .pwm            = { 255, 255 },
 164         .pwm_enable     = { 0, 0 },
 165 };
 166
 167 static struct i2c_board_info __initdata glantank_i2c_devices[] = {
 168         {
 169                 I2C_BOARD_INFO("rs5c372a", 0x32),
 170         },
 171         {
 172                 I2C_BOARD_INFO("f75375", 0x2e),
 173                 .platform_data = &glantank_f75375s,
 174         },
 175 };
 176
 177 static void glantank_power_off(void)
 178 {
 179         __raw_writeb(0x01, IOMEM(0xfe8d0004));
 180
 181         while (1)
 182                 ;
 183 }
 184
 185 static void __init glantank_init_machine(void)
 186 {
 187         register_iop32x_gpio();
 188         platform_device_register(&iop3xx_i2c0_device);
 189         platform_device_register(&iop3xx_i2c1_device);
 190         platform_device_register(&glantank_flash_device);
 191         platform_device_register(&glantank_serial_device);
 192         platform_device_register(&iop3xx_dma_0_channel);
 193         platform_device_register(&iop3xx_dma_1_channel);
 194
 195         i2c_register_board_info(0, glantank_i2c_devices,
 196                 ARRAY_SIZE(glantank_i2c_devices));
 197
 198         pm_power_off = glantank_power_off;
 199 }
 200
 201 MACHINE_START(GLANTANK, "GLAN Tank")
 202         /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
 203         .atag_offset    = 0x100,
 204         .map_io         = glantank_map_io,
 205         .init_irq       = iop32x_init_irq,
 206         .init_time      = glantank_timer_init,
 207         .init_machine   = glantank_init_machine,
 208         .restart        = iop3xx_restart,
 209 MACHINE_END