kernel/linux/arch/arm/mach-sa1100/xp860.c

   1 /*
   2  * linux/arch/arm/mach-sa1100/xp860.c
   3  */
   4
   5 #include <linux/init.h>
   6 #include <linux/kernel.h>
   7 #include <linux/delay.h>
   8 #include <linux/pm.h>
   9 #include <linux/tty.h>
  10 #include <linux/ioport.h>
  11
  12 #include <asm/hardware.h>
  13 #include <asm/setup.h>
  14
  15 #include <asm/mach/arch.h>
  16 #include <asm/mach/map.h>
  17 #include <asm/mach/serial_sa1100.h>
  18 #include <asm/hardware/sa1111.h>
  19
  20 #include "generic.h"
  21
  22
  23 static void xp860_power_off(void)
  24 {
  25         local_irq_disable();
  26         GPDR |= GPIO_GPIO20;
  27         GPSR = GPIO_GPIO20;
  28         mdelay(1000);
  29         GPCR = GPIO_GPIO20;
  30         while(1);
  31 }
  32
  33 static struct resource sa1111_resources[] = {
  34         [0] = {
  35                 .start          = 0x40000000,
  36                 .end            = 0x40001fff,
  37                 .flags          = IORESOURCE_MEM,
  38         },
  39 };
  40
  41 static u64 sa1111_dmamask = 0xffffffffUL;
  42
  43 static struct platform_device sa1111_device = {
  44         .name           = "sa1111",
  45         .id             = 0,
  46         .dev            = {
  47                 .dma_mask = &sa1111_dmamask,
  48                 .coherent_dma_mask = 0xffffffff,
  49         },
  50         .num_resources  = ARRAY_SIZE(sa1111_resources),
  51         .resource       = sa1111_resources,
  52 };
  53
  54 static struct platform_device *devices[] __initdata = {
  55         &sa1111_device,
  56 };
  57
  58 /*
  59  * Note: I replaced the sa1111_init() without the full SA1111 initialisation
  60  * because this machine doesn't appear to use the DMA features.  If this is
  61  * wrong, please look at neponset.c to fix it properly.
  62  */
  63 static int __init xp860_init(void)
  64 {
  65         pm_power_off = xp860_power_off;
  66
  67         return platform_add_devices(devices, ARRAY_SIZE(devices));
  68 }
  69
  70 arch_initcall(xp860_init);
  71
  72 static struct map_desc xp860_io_desc[] __initdata = {
  73  /* virtual     physical    length      type */
  74   { 0xf0000000, 0x10000000, 0x00100000, MT_DEVICE }, /* SCSI */
  75   { 0xf1000000, 0x18000000, 0x00100000, MT_DEVICE }, /* LAN */
  76   { 0xf4000000, 0x40000000, 0x00800000, MT_DEVICE }  /* SA-1111 */
  77 };
  78
  79 static void __init xp860_map_io(void)
  80 {
  81         sa1100_map_io();
  82         iotable_init(xp860_io_desc, ARRAY_SIZE(xp860_io_desc));
  83
  84         sa1100_register_uart(0, 3);
  85         sa1100_register_uart(1, 1);
  86 }
  87
  88 MACHINE_START(XP860, "XP860")
  89         BOOT_MEM(0xc0000000, 0x80000000, 0xf8000000)
  90         MAPIO(xp860_map_io)
  91         INITIRQ(sa1100_init_irq)
  92         INITTIME(sa1100_init_time)
  93 MACHINE_END