arch/arm/mach-ks8695/board-dsm320.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * arch/arm/mach-ks8695/board-dsm320.c
   4  *
   5  * DSM-320 D-Link Wireless Media Player, board support.
   6  *
   7  * Copyright 2008 Simtec Electronics
   8  *                Daniel Silverstone <dsilvers@simtec.co.uk>
   9  */
  10 #include <linux/gpio.h>
  11 #include <linux/kernel.h>
  12 #include <linux/types.h>
  13 #include <linux/interrupt.h>
  14 #include <linux/init.h>
  15 #include <linux/platform_device.h>
  16
  17 #include <linux/mtd/mtd.h>
  18 #include <linux/mtd/map.h>
  19 #include <linux/mtd/physmap.h>
  20 #include <linux/mtd/partitions.h>
  21
  22 #include <asm/mach-types.h>
  23
  24 #include <asm/mach/arch.h>
  25 #include <asm/mach/map.h>
  26 #include <asm/mach/irq.h>
  27
  28 #include "devices.h"
  29 #include <mach/gpio-ks8695.h>
  30
  31 #include "generic.h"
  32
  33 #ifdef CONFIG_PCI
  34 static int dsm320_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
  35 {
  36         switch (slot) {
  37         case 0:
  38                 /* PCI-AHB bridge? */
  39                 return KS8695_IRQ_EXTERN0;
  40         case 18:
  41                 /* Mini PCI slot */
  42                 return KS8695_IRQ_EXTERN2;
  43         case 20:
  44                 /* RealMAGIC chip */
  45                 return KS8695_IRQ_EXTERN0;
  46         }
  47         BUG();
  48 }
  49
  50 static struct ks8695_pci_cfg __initdata dsm320_pci = {
  51         .mode           = KS8695_MODE_MINIPCI,
  52         .map_irq        = dsm320_pci_map_irq,
  53 };
  54
  55 static void __init dsm320_register_pci(void)
  56 {
  57         /* Initialise the GPIO lines for interrupt mode */
  58         /* RealMAGIC */
  59         ks8695_gpio_interrupt(KS8695_GPIO_0, IRQ_TYPE_LEVEL_LOW);
  60         /* MiniPCI Slot */
  61         ks8695_gpio_interrupt(KS8695_GPIO_2, IRQ_TYPE_LEVEL_LOW);
  62
  63         ks8695_init_pci(&dsm320_pci);
  64 }
  65
  66 #else
  67 static inline void __init dsm320_register_pci(void) { }
  68 #endif
  69
  70 static struct physmap_flash_data dsm320_nor_pdata = {
  71         .width          = 4,
  72         .nr_parts       = 0,
  73 };
  74
  75 static struct resource dsm320_nor_resource[] = {
  76         [0] = {
  77                 .start = SZ_32M, /* We expect the bootloader to map
  78                                   * the flash here.
  79                                   */
  80                 .end   = SZ_32M + SZ_4M - 1,
  81                 .flags = IORESOURCE_MEM,
  82         }
  83 };
  84
  85 static struct platform_device dsm320_device_nor = {
  86         .name           = "physmap-flash",
  87         .id             = -1,
  88         .num_resources  = ARRAY_SIZE(dsm320_nor_resource),
  89         .resource       = dsm320_nor_resource,
  90         .dev            = {
  91                 .platform_data = &dsm320_nor_pdata,
  92         },
  93 };
  94
  95 void __init dsm320_register_nor(void)
  96 {
  97         int ret;
  98
  99         ret = platform_device_register(&dsm320_device_nor);
 100         if (ret < 0)
 101                 printk(KERN_ERR "failed to register physmap-flash device\n");
 102 }
 103
 104 static void __init dsm320_init(void)
 105 {
 106         /* GPIO registration */
 107         ks8695_register_gpios();
 108
 109         /* PCI registration */
 110         dsm320_register_pci();
 111
 112         /* Network device */
 113         ks8695_add_device_lan();        /* eth0 = LAN */
 114
 115         /* NOR devices */
 116         dsm320_register_nor();
 117 }
 118
 119 MACHINE_START(DSM320, "D-Link DSM-320 Wireless Media Player")
 120         /* Maintainer: Simtec Electronics. */
 121         .atag_offset    = 0x100,
 122         .map_io         = ks8695_map_io,
 123         .init_irq       = ks8695_init_irq,
 124         .init_machine   = dsm320_init,
 125         .init_time      = ks8695_timer_init,
 126         .restart        = ks8695_restart,
 127 MACHINE_END