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