release/src-rt-6.x.4708/linux/linux-2.6.36/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 static struct sys_timer glantank_timer = {
  48         .init           = glantank_timer_init,
  49 };
  50
  51
  52 /*
  53  * GLAN Tank I/O.
  54  */
  55 static struct map_desc glantank_io_desc[] __initdata = {
  56         {       /* on-board devices */
  57                 .virtual        = GLANTANK_UART,
  58                 .pfn            = __phys_to_pfn(GLANTANK_UART),
  59                 .length         = 0x00100000,
  60                 .type           = MT_DEVICE
  61         },
  62 };
  63
  64 void __init glantank_map_io(void)
  65 {
  66         iop3xx_map_io();
  67         iotable_init(glantank_io_desc, ARRAY_SIZE(glantank_io_desc));
  68 }
  69
  70
  71 /*
  72  * GLAN Tank PCI.
  73  */
  74 #define INTA    IRQ_IOP32X_XINT0
  75 #define INTB    IRQ_IOP32X_XINT1
  76 #define INTC    IRQ_IOP32X_XINT2
  77 #define INTD    IRQ_IOP32X_XINT3
  78
  79 static int __init
  80 glantank_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
  81 {
  82         static int pci_irq_table[][4] = {
  83                 /*
  84                  * PCI IDSEL/INTPIN->INTLINE
  85                  * A       B       C       D
  86                  */
  87                 {INTD, INTD, INTD, INTD}, /* UART (8250) */
  88                 {INTA, INTA, INTA, INTA}, /* Ethernet (E1000) */
  89                 {INTB, INTB, INTB, INTB}, /* IDE (AEC6280R) */
  90                 {INTC, INTC, INTC, INTC}, /* USB (NEC) */
  91         };
  92
  93         BUG_ON(pin < 1 || pin > 4);
  94
  95         return pci_irq_table[slot % 4][pin - 1];
  96 }
  97
  98 static struct hw_pci glantank_pci __initdata = {
  99         .swizzle        = pci_std_swizzle,
 100         .nr_controllers = 1,
 101         .setup          = iop3xx_pci_setup,
 102         .preinit        = iop3xx_pci_preinit,
 103         .scan           = iop3xx_pci_scan_bus,
 104         .map_irq        = glantank_pci_map_irq,
 105 };
 106
 107 static int __init glantank_pci_init(void)
 108 {
 109         if (machine_is_glantank())
 110                 pci_common_init(&glantank_pci);
 111
 112         return 0;
 113 }
 114
 115 subsys_initcall(glantank_pci_init);
 116
 117
 118 /*
 119  * GLAN Tank machine initialization.
 120  */
 121 static struct physmap_flash_data glantank_flash_data = {
 122         .width          = 2,
 123 };
 124
 125 static struct resource glantank_flash_resource = {
 126         .start          = 0xf0000000,
 127         .end            = 0xf007ffff,
 128         .flags          = IORESOURCE_MEM,
 129 };
 130
 131 static struct platform_device glantank_flash_device = {
 132         .name           = "physmap-flash",
 133         .id             = 0,
 134         .dev            = {
 135                 .platform_data  = &glantank_flash_data,
 136         },
 137         .num_resources  = 1,
 138         .resource       = &glantank_flash_resource,
 139 };
 140
 141 static struct plat_serial8250_port glantank_serial_port[] = {
 142         {
 143                 .mapbase        = GLANTANK_UART,
 144                 .membase        = (char *)GLANTANK_UART,
 145                 .irq            = IRQ_IOP32X_XINT3,
 146                 .flags          = UPF_SKIP_TEST,
 147                 .iotype         = UPIO_MEM,
 148                 .regshift       = 0,
 149                 .uartclk        = 1843200,
 150         },
 151         { },
 152 };
 153
 154 static struct resource glantank_uart_resource = {
 155         .start          = GLANTANK_UART,
 156         .end            = GLANTANK_UART + 7,
 157         .flags          = IORESOURCE_MEM,
 158 };
 159
 160 static struct platform_device glantank_serial_device = {
 161         .name           = "serial8250",
 162         .id             = PLAT8250_DEV_PLATFORM,
 163         .dev            = {
 164                 .platform_data          = glantank_serial_port,
 165         },
 166         .num_resources  = 1,
 167         .resource       = &glantank_uart_resource,
 168 };
 169
 170 static struct f75375s_platform_data glantank_f75375s = {
 171         .pwm            = { 255, 255 },
 172         .pwm_enable     = { 0, 0 },
 173 };
 174
 175 static struct i2c_board_info __initdata glantank_i2c_devices[] = {
 176         {
 177                 I2C_BOARD_INFO("rs5c372a", 0x32),
 178         },
 179         {
 180                 I2C_BOARD_INFO("f75375", 0x2e),
 181                 .platform_data = &glantank_f75375s,
 182         },
 183 };
 184
 185 static void glantank_power_off(void)
 186 {
 187         __raw_writeb(0x01, 0xfe8d0004);
 188
 189         while (1)
 190                 ;
 191 }
 192
 193 static void __init glantank_init_machine(void)
 194 {
 195         platform_device_register(&iop3xx_i2c0_device);
 196         platform_device_register(&iop3xx_i2c1_device);
 197         platform_device_register(&glantank_flash_device);
 198         platform_device_register(&glantank_serial_device);
 199         platform_device_register(&iop3xx_dma_0_channel);
 200         platform_device_register(&iop3xx_dma_1_channel);
 201
 202         i2c_register_board_info(0, glantank_i2c_devices,
 203                 ARRAY_SIZE(glantank_i2c_devices));
 204
 205         pm_power_off = glantank_power_off;
 206 }
 207
 208 MACHINE_START(GLANTANK, "GLAN Tank")
 209         /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
 210         .phys_io        = GLANTANK_UART,
 211         .io_pg_offst    = ((GLANTANK_UART) >> 18) & 0xfffc,
 212         .boot_params    = 0xa0000100,
 213         .map_io         = glantank_map_io,
 214         .init_irq       = iop32x_init_irq,
 215         .timer          = &glantank_timer,
 216         .init_machine   = glantank_init_machine,
 217 MACHINE_END