arch/arm/mach-iop32x/glantank.c

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