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/slab.h>
  23 #include <linux/serial_core.h>
  24 #include <linux/serial_8250.h>
  25 #include <linux/mtd/physmap.h>
  26 #include <linux/i2c.h>
  27 #include <linux/platform_device.h>
  28 #include <linux/io.h>
  29 #include <mach/hardware.h>
  30 #include <asm/irq.h>
  31 #include <asm/mach/arch.h>
  32 #include <asm/mach/map.h>
  33 #include <asm/mach/pci.h>
  34 #include <asm/mach/time.h>
  35 #include <asm/mach-types.h>
  36 #include <asm/page.h>
  37 #include <mach/time.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 static struct sys_timer glantank_timer = {
  49         .init           = glantank_timer_init,
  50         .offset         = iop_gettimeoffset,
  51 };
  52
  53
  54 /*
  55  * GLAN Tank I/O.
  56  */
  57 static struct map_desc glantank_io_desc[] __initdata = {
  58         {       /* on-board devices */
  59                 .virtual        = GLANTANK_UART,
  60                 .pfn            = __phys_to_pfn(GLANTANK_UART),
  61                 .length         = 0x00100000,
  62                 .type           = MT_DEVICE
  63         },
  64 };
  65
  66 void __init glantank_map_io(void)
  67 {
  68         iop3xx_map_io();
  69         iotable_init(glantank_io_desc, ARRAY_SIZE(glantank_io_desc));
  70 }
  71
  72
  73 /*
  74  * GLAN Tank PCI.
  75  */
  76 #define INTA    IRQ_IOP32X_XINT0
  77 #define INTB    IRQ_IOP32X_XINT1
  78 #define INTC    IRQ_IOP32X_XINT2
  79 #define INTD    IRQ_IOP32X_XINT3
  80
  81 static int __init
  82 glantank_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
  83 {
  84         static int pci_irq_table[][4] = {
  85                 /*
  86                  * PCI IDSEL/INTPIN->INTLINE
  87                  * A       B       C       D
  88                  */
  89                 {INTD, INTD, INTD, INTD}, /* UART (8250) */
  90                 {INTA, INTA, INTA, INTA}, /* Ethernet (E1000) */
  91                 {INTB, INTB, INTB, INTB}, /* IDE (AEC6280R) */
  92                 {INTC, INTC, INTC, INTC}, /* USB (NEC) */
  93         };
  94
  95         BUG_ON(pin < 1 || pin > 4);
  96
  97         return pci_irq_table[slot % 4][pin - 1];
  98 }
  99
 100 static struct hw_pci glantank_pci __initdata = {
 101         .swizzle        = pci_std_swizzle,
 102         .nr_controllers = 1,
 103         .setup          = iop3xx_pci_setup,
 104         .preinit        = iop3xx_pci_preinit,
 105         .scan           = iop3xx_pci_scan_bus,
 106         .map_irq        = glantank_pci_map_irq,
 107 };
 108
 109 static int __init glantank_pci_init(void)
 110 {
 111         if (machine_is_glantank())
 112                 pci_common_init(&glantank_pci);
 113
 114         return 0;
 115 }
 116
 117 subsys_initcall(glantank_pci_init);
 118
 119
 120 /*
 121  * GLAN Tank machine initialization.
 122  */
 123 static struct physmap_flash_data glantank_flash_data = {
 124         .width          = 2,
 125 };
 126
 127 static struct resource glantank_flash_resource = {
 128         .start          = 0xf0000000,
 129         .end            = 0xf007ffff,
 130         .flags          = IORESOURCE_MEM,
 131 };
 132
 133 static struct platform_device glantank_flash_device = {
 134         .name           = "physmap-flash",
 135         .id             = 0,
 136         .dev            = {
 137                 .platform_data  = &glantank_flash_data,
 138         },
 139         .num_resources  = 1,
 140         .resource       = &glantank_flash_resource,
 141 };
 142
 143 static struct plat_serial8250_port glantank_serial_port[] = {
 144         {
 145                 .mapbase        = GLANTANK_UART,
 146                 .membase        = (char *)GLANTANK_UART,
 147                 .irq            = IRQ_IOP32X_XINT3,
 148                 .flags          = UPF_SKIP_TEST,
 149                 .iotype         = UPIO_MEM,
 150                 .regshift       = 0,
 151                 .uartclk        = 1843200,
 152         },
 153         { },
 154 };
 155
 156 static struct resource glantank_uart_resource = {
 157         .start          = GLANTANK_UART,
 158         .end            = GLANTANK_UART + 7,
 159         .flags          = IORESOURCE_MEM,
 160 };
 161
 162 static struct platform_device glantank_serial_device = {
 163         .name           = "serial8250",
 164         .id             = PLAT8250_DEV_PLATFORM,
 165         .dev            = {
 166                 .platform_data          = glantank_serial_port,
 167         },
 168         .num_resources  = 1,
 169         .resource       = &glantank_uart_resource,
 170 };
 171
 172 static struct f75375s_platform_data glantank_f75375s = {
 173         .pwm            = { 255, 255 },
 174         .pwm_enable     = { 0, 0 },
 175 };
 176
 177 static struct i2c_board_info __initdata glantank_i2c_devices[] = {
 178         {
 179                 I2C_BOARD_INFO("rs5c372a", 0x32),
 180         },
 181         {
 182                 I2C_BOARD_INFO("f75375", 0x2e),
 183                 .platform_data = &glantank_f75375s,
 184         },
 185 };
 186
 187 static void glantank_power_off(void)
 188 {
 189         __raw_writeb(0x01, 0xfe8d0004);
 190
 191         while (1)
 192                 ;
 193 }
 194
 195 static void __init glantank_init_machine(void)
 196 {
 197         platform_device_register(&iop3xx_i2c0_device);
 198         platform_device_register(&iop3xx_i2c1_device);
 199         platform_device_register(&glantank_flash_device);
 200         platform_device_register(&glantank_serial_device);
 201         platform_device_register(&iop3xx_dma_0_channel);
 202         platform_device_register(&iop3xx_dma_1_channel);
 203
 204         i2c_register_board_info(0, glantank_i2c_devices,
 205                 ARRAY_SIZE(glantank_i2c_devices));
 206
 207         pm_power_off = glantank_power_off;
 208 }
 209
 210 MACHINE_START(GLANTANK, "GLAN Tank")
 211         /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
 212         .phys_io        = GLANTANK_UART,
 213         .io_pg_offst    = ((GLANTANK_UART) >> 18) & 0xfffc,
 214         .boot_params    = 0xa0000100,
 215         .map_io         = glantank_map_io,
 216         .init_irq       = iop32x_init_irq,
 217         .timer          = &glantank_timer,
 218         .init_machine   = glantank_init_machine,
 219 MACHINE_END