arch/arm/mach-omap/board-netstar.c

   1 /*
   2  * Modified from board-generic.c
   3  *
   4  * Copyright (C) 2004 2N Telekomunikace, Ladislav Michl <michl@2n.cz>
   5  *
   6  * Code for Netstar OMAP board.
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  */
  12
  13 #include <linux/delay.h>
  14 #include <linux/device.h>
  15 #include <linux/interrupt.h>
  16 #include <linux/init.h>
  17 #include <linux/kernel.h>
  18 #include <linux/notifier.h>
  19 #include <linux/reboot.h>
  20
  21 #include <asm/hardware.h>
  22 #include <asm/mach-types.h>
  23 #include <asm/mach/arch.h>
  24 #include <asm/mach/map.h>
  25
  26 #include <asm/arch/gpio.h>
  27 #include <asm/arch/mux.h>
  28 #include <asm/arch/usb.h>
  29
  30 #include "common.h"
  31
  32 extern void __init omap_init_time(void);
  33 extern int omap_gpio_init(void);
  34
  35 static struct resource netstar_smc91x_resources[] = {
  36         [0] = {
  37                 .start  = OMAP_CS1_PHYS + 0x300,
  38                 .end    = OMAP_CS1_PHYS + 0x300 + 16,
  39                 .flags  = IORESOURCE_MEM,
  40         },
  41         [1] = {
  42                 .start  = OMAP_GPIO_IRQ(8),
  43                 .end    = OMAP_GPIO_IRQ(8),
  44                 .flags  = IORESOURCE_IRQ,
  45         },
  46 };
  47
  48 static struct platform_device netstar_smc91x_device = {
  49         .name           = "smc91x",
  50         .id             = 0,
  51         .num_resources  = ARRAY_SIZE(netstar_smc91x_resources),
  52         .resource       = netstar_smc91x_resources,
  53 };
  54
  55 static struct platform_device *netstar_devices[] __initdata = {
  56         &netstar_smc91x_device,
  57 };
  58
  59 static void __init netstar_init_irq(void)
  60 {
  61         omap_init_irq();
  62         omap_gpio_init();
  63 }
  64
  65 static void __init netstar_init(void)
  66 {
  67         /* green LED */
  68         omap_request_gpio(4);
  69         omap_set_gpio_direction(4, 0);
  70         /* smc91x reset */
  71         omap_request_gpio(7);
  72         omap_set_gpio_direction(7, 0);
  73         omap_set_gpio_dataout(7, 1);
  74         udelay(2);      /* wait at least 100ns */
  75         omap_set_gpio_dataout(7, 0);
  76         mdelay(50);     /* 50ms until PHY ready */
  77         /* smc91x interrupt pin */
  78         omap_request_gpio(8);
  79         omap_set_gpio_edge_ctrl(8, OMAP_GPIO_RISING_EDGE);
  80
  81         omap_request_gpio(12);
  82         omap_request_gpio(13);
  83         omap_request_gpio(14);
  84         omap_request_gpio(15);
  85         omap_set_gpio_edge_ctrl(12, OMAP_GPIO_FALLING_EDGE);
  86         omap_set_gpio_edge_ctrl(13, OMAP_GPIO_FALLING_EDGE);
  87         omap_set_gpio_edge_ctrl(14, OMAP_GPIO_FALLING_EDGE);
  88         omap_set_gpio_edge_ctrl(15, OMAP_GPIO_FALLING_EDGE);
  89
  90         platform_add_devices(netstar_devices, ARRAY_SIZE(netstar_devices));
  91
  92         /* Switch on green LED */
  93         omap_set_gpio_dataout(4, 0);
  94         /* Switch off red LED */
  95         omap_writeb(0x00, OMAP_LPG1_PMR);       /* Disable clock */
  96         omap_writeb(0x80, OMAP_LPG1_LCR);
  97 }
  98
  99 static int __initdata omap_serial_ports[OMAP_MAX_NR_PORTS] = {1, 1, 1};
 100
 101 static void __init netstar_map_io(void)
 102 {
 103         omap_map_io();
 104         omap_serial_init(omap_serial_ports);
 105 }
 106
 107 #define MACHINE_PANICED         1
 108 #define MACHINE_REBOOTING       2
 109 #define MACHINE_REBOOT          4
 110 static unsigned long machine_state;
 111
 112 static int panic_event(struct notifier_block *this, unsigned long event,
 113          void *ptr)
 114 {
 115         if (test_and_set_bit(MACHINE_PANICED, &machine_state))
 116                 return NOTIFY_DONE;
 117
 118         /* Switch off green LED */
 119         omap_set_gpio_dataout(4, 1);
 120         /* Flash red LED */
 121         omap_writeb(0x78, OMAP_LPG1_LCR);
 122         omap_writeb(0x01, OMAP_LPG1_PMR);       /* Enable clock */
 123
 124         return NOTIFY_DONE;
 125 }
 126
 127 static struct notifier_block panic_block = {
 128         .notifier_call  = panic_event,
 129 };
 130
 131 static int __init netstar_late_init(void)
 132 {
 133         /* TODO: Setup front panel switch here */
 134
 135         /* Setup panic notifier */
 136         notifier_chain_register(&panic_notifier_list, &panic_block);
 137
 138         return 0;
 139 }
 140
 141 postcore_initcall(netstar_late_init);
 142
 143 MACHINE_START(NETSTAR, "NetStar OMAP5910")
 144         MAINTAINER("Ladislav Michl <michl@2n.cz>")
 145         BOOT_MEM(0x10000000, 0xfff00000, 0xfef00000)
 146         BOOT_PARAMS(0x10000100)
 147         MAPIO(netstar_map_io)
 148         INITIRQ(netstar_init_irq)
 149         INIT_MACHINE(netstar_init)
 150         .timer = &omap_timer,
 151 MACHINE_END