target/linux/adm8668/files/arch/mips/adm8668/platform.c

   1 /*
   2  * Copyright (C) 2010 Scott Nicholas <neutronscott@scottn.us>
   3  *
   4  * This file is subject to the terms and conditions of the GNU General Public
   5  * License.  See the file "COPYING" in the main directory of this archive
   6  * for more details.
   7  */
   8
   9 #include <linux/init.h>
  10 #include <linux/kernel.h>
  11 #include <linux/platform_device.h>
  12 #include <linux/mtd/physmap.h>
  13 #include <linux/pci.h>
  14 #include <linux/slab.h>
  15 #include <linux/ioport.h>
  16 #include <asm/reboot.h>
  17 #include <asm/time.h>
  18 #include <asm/addrspace.h>
  19 #include <asm/bootinfo.h>
  20 #include <asm/io.h>
  21 #include <adm8668.h>
  22
  23 static struct resource uart_resources[] = {
  24         {
  25                 .start          = ADM8668_UART0_BASE,
  26                 .end            = ADM8668_UART0_BASE + 0xF,
  27                 .flags          = IORESOURCE_MEM,
  28         },
  29         {
  30                 .start          = INT_LVL_UART0,
  31                 .flags          = IORESOURCE_IRQ,
  32         },
  33 };
  34
  35 static struct platform_device adm8668_uart_device = {
  36         .name           = "adm8668_uart",
  37         .id             = 0,
  38         .resource       = uart_resources,
  39         .num_resources  = ARRAY_SIZE(uart_resources),
  40 };
  41
  42 static struct resource eth0_resources[] = {
  43         {
  44                 .start          = ADM8668_LAN_BASE,
  45                 .end            = ADM8668_LAN_BASE + 256,
  46                 .flags          = IORESOURCE_MEM,
  47         },
  48         {
  49                 .start          = INT_LVL_LAN,
  50                 .flags          = IORESOURCE_IRQ,
  51         },
  52 };
  53
  54 static struct platform_device adm8668_eth0_device = {
  55         .name           = "adm8668_eth",
  56         .id             = 0,
  57         .resource       = eth0_resources,
  58         .num_resources  = ARRAY_SIZE(eth0_resources),
  59 };
  60
  61 static struct resource eth1_resources[] = {
  62         {
  63                 .start          = ADM8668_WAN_BASE,
  64                 .end            = ADM8668_WAN_BASE + 256,
  65                 .flags          = IORESOURCE_MEM,
  66         },
  67         {
  68                 .start          = INT_LVL_WAN,
  69                 .flags          = IORESOURCE_IRQ,
  70         },
  71 };
  72
  73 static struct platform_device adm8668_eth1_device = {
  74         .name           = "adm8668_eth",
  75         .id             = 1,
  76         .resource       = eth1_resources,
  77         .num_resources  = ARRAY_SIZE(eth1_resources),
  78 };
  79
  80 int __devinit adm8668_devs_register(void)
  81 {
  82         platform_device_register(&adm8668_uart_device);
  83         platform_device_register(&adm8668_eth0_device);
  84         platform_device_register(&adm8668_eth1_device);
  85
  86         return 0;
  87 }
  88
  89 void __init plat_time_init(void)
  90 {
  91         int adj = (ADM8668_CONFIG_REG(ADM8668_CR3) >> 11) & 0xf;
  92
  93         /* adjustable clock selection
  94            CR3 bit 14~11, 0000 -> 175MHz, 0001 -> 180MHz, etc... */
  95
  96         mips_hpt_frequency = (SYS_CLOCK + adj * 5000000) / 2;
  97         printk("ADM8668 CPU clock: %d MHz\n", 2*mips_hpt_frequency / 1000000);
  98 }
  99
 100 arch_initcall(adm8668_devs_register);