release/src-rt-6.x.4708/linux/linux-2.6.36/arch/arm/mach-ks8695/board-dsm320.c

   1 /*
   2  * arch/arm/mach-ks8695/board-dsm320.c
   3  *
   4  * DSM-320 D-Link Wireless Media Player, board support.
   5  *
   6  * Copyright 2008 Simtec Electronics
   7  *                Daniel Silverstone <dsilvers@simtec.co.uk>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2 as
  11  * published by the Free Software Foundation.
  12  */
  13
  14 #include <linux/kernel.h>
  15 #include <linux/types.h>
  16 #include <linux/interrupt.h>
  17 #include <linux/init.h>
  18 #include <linux/platform_device.h>
  19
  20 #include <linux/mtd/mtd.h>
  21 #include <linux/mtd/map.h>
  22 #include <linux/mtd/physmap.h>
  23 #include <linux/mtd/partitions.h>
  24
  25 #include <asm/mach-types.h>
  26
  27 #include <asm/mach/arch.h>
  28 #include <asm/mach/map.h>
  29 #include <asm/mach/irq.h>
  30
  31 #include <mach/devices.h>
  32 #include <mach/gpio.h>
  33
  34 #include "generic.h"
  35
  36 #ifdef CONFIG_PCI
  37 static int dsm320_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
  38 {
  39         switch (slot) {
  40         case 0:
  41                 /* PCI-AHB bridge? */
  42                 return KS8695_IRQ_EXTERN0;
  43         case 18:
  44                 /* Mini PCI slot */
  45                 return KS8695_IRQ_EXTERN2;
  46         case 20:
  47                 /* RealMAGIC chip */
  48                 return KS8695_IRQ_EXTERN0;
  49         }
  50         BUG();
  51 }
  52
  53 static struct ks8695_pci_cfg __initdata dsm320_pci = {
  54         .mode           = KS8695_MODE_MINIPCI,
  55         .map_irq        = dsm320_pci_map_irq,
  56 };
  57
  58 static void __init dsm320_register_pci(void)
  59 {
  60         /* Initialise the GPIO lines for interrupt mode */
  61         /* RealMAGIC */
  62         ks8695_gpio_interrupt(KS8695_GPIO_0, IRQ_TYPE_LEVEL_LOW);
  63         /* MiniPCI Slot */
  64         ks8695_gpio_interrupt(KS8695_GPIO_2, IRQ_TYPE_LEVEL_LOW);
  65
  66         ks8695_init_pci(&dsm320_pci);
  67 }
  68
  69 #else
  70 static inline void __init dsm320_register_pci(void) { }
  71 #endif
  72
  73 static struct physmap_flash_data dsm320_nor_pdata = {
  74         .width          = 4,
  75         .nr_parts       = 0,
  76 };
  77
  78 static struct resource dsm320_nor_resource[] = {
  79         [0] = {
  80                 .start = SZ_32M, /* We expect the bootloader to map
  81                                   * the flash here.
  82                                   */
  83                 .end   = SZ_32M + SZ_4M - 1,
  84                 .flags = IORESOURCE_MEM,
  85         }
  86 };
  87
  88 static struct platform_device dsm320_device_nor = {
  89         .name           = "physmap-flash",
  90         .id             = -1,
  91         .num_resources  = ARRAY_SIZE(dsm320_nor_resource),
  92         .resource       = dsm320_nor_resource,
  93         .dev            = {
  94                 .platform_data = &dsm320_nor_pdata,
  95         },
  96 };
  97
  98 void __init dsm320_register_nor(void)
  99 {
 100         int ret;
 101
 102         ret = platform_device_register(&dsm320_device_nor);
 103         if (ret < 0)
 104                 printk(KERN_ERR "failed to register physmap-flash device\n");
 105 }
 106
 107 static void __init dsm320_init(void)
 108 {
 109         /* GPIO registration */
 110         ks8695_register_gpios();
 111
 112         /* PCI registration */
 113         dsm320_register_pci();
 114
 115         /* Network device */
 116         ks8695_add_device_lan();        /* eth0 = LAN */
 117
 118         /* NOR devices */
 119         dsm320_register_nor();
 120 }
 121
 122 MACHINE_START(DSM320, "D-Link DSM-320 Wireless Media Player")
 123         /* Maintainer: Simtec Electronics. */
 124         .phys_io        = KS8695_IO_PA,
 125         .io_pg_offst    = (KS8695_IO_VA >> 18) & 0xfffc,
 126         .boot_params    = KS8695_SDRAM_PA + 0x100,
 127         .map_io         = ks8695_map_io,
 128         .init_irq       = ks8695_init_irq,
 129         .init_machine   = dsm320_init,
 130         .timer          = &ks8695_timer,
 131 MACHINE_END