arch/arm/mach-omap1/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 #include <asm/arch/common.h>
  30
  31 extern void __init omap_init_time(void);
  32 extern int omap_gpio_init(void);
  33
  34 static struct resource netstar_smc91x_resources[] = {
  35         [0] = {
  36                 .start  = OMAP_CS1_PHYS + 0x300,
  37                 .end    = OMAP_CS1_PHYS + 0x300 + 16,
  38                 .flags  = IORESOURCE_MEM,
  39         },
  40         [1] = {
  41                 .start  = OMAP_GPIO_IRQ(8),
  42                 .end    = OMAP_GPIO_IRQ(8),
  43                 .flags  = IORESOURCE_IRQ,
  44         },
  45 };
  46
  47 static struct platform_device netstar_smc91x_device = {
  48         .name           = "smc91x",
  49         .id             = 0,
  50         .num_resources  = ARRAY_SIZE(netstar_smc91x_resources),
  51         .resource       = netstar_smc91x_resources,
  52 };
  53
  54 static struct platform_device *netstar_devices[] __initdata = {
  55         &netstar_smc91x_device,
  56 };
  57
  58 static void __init netstar_init_irq(void)
  59 {
  60         omap_init_irq();
  61         omap_gpio_init();
  62 }
  63
  64 static void __init netstar_init(void)
  65 {
  66         /* green LED */
  67         omap_request_gpio(4);
  68         omap_set_gpio_direction(4, 0);
  69         /* smc91x reset */
  70         omap_request_gpio(7);
  71         omap_set_gpio_direction(7, 0);
  72         omap_set_gpio_dataout(7, 1);
  73         udelay(2);      /* wait at least 100ns */
  74         omap_set_gpio_dataout(7, 0);
  75         mdelay(50);     /* 50ms until PHY ready */
  76         /* smc91x interrupt pin */
  77         omap_request_gpio(8);
  78
  79         omap_request_gpio(12);
  80         omap_request_gpio(13);
  81         omap_request_gpio(14);
  82         omap_request_gpio(15);
  83         set_irq_type(OMAP_GPIO_IRQ(12), IRQT_FALLING);
  84         set_irq_type(OMAP_GPIO_IRQ(13), IRQT_FALLING);
  85         set_irq_type(OMAP_GPIO_IRQ(14), IRQT_FALLING);
  86         set_irq_type(OMAP_GPIO_IRQ(15), IRQT_FALLING);
  87
  88         platform_add_devices(netstar_devices, ARRAY_SIZE(netstar_devices));
  89
  90         /* Switch on green LED */
  91         omap_set_gpio_dataout(4, 0);
  92         /* Switch off red LED */
  93         omap_writeb(0x00, OMAP_LPG1_PMR);       /* Disable clock */
  94         omap_writeb(0x80, OMAP_LPG1_LCR);
  95 }
  96
  97 static int __initdata omap_serial_ports[OMAP_MAX_NR_PORTS] = {1, 1, 1};
  98
  99 static void __init netstar_map_io(void)
 100 {
 101         omap_map_common_io();
 102         omap_serial_init(omap_serial_ports);
 103 }
 104
 105 #define MACHINE_PANICED         1
 106 #define MACHINE_REBOOTING       2
 107 #define MACHINE_REBOOT          4
 108 static unsigned long machine_state;
 109
 110 static int panic_event(struct notifier_block *this, unsigned long event,
 111          void *ptr)
 112 {
 113         if (test_and_set_bit(MACHINE_PANICED, &machine_state))
 114                 return NOTIFY_DONE;
 115
 116         /* Switch off green LED */
 117         omap_set_gpio_dataout(4, 1);
 118         /* Flash red LED */
 119         omap_writeb(0x78, OMAP_LPG1_LCR);
 120         omap_writeb(0x01, OMAP_LPG1_PMR);       /* Enable clock */
 121
 122         return NOTIFY_DONE;
 123 }
 124
 125 static struct notifier_block panic_block = {
 126         .notifier_call  = panic_event,
 127 };
 128
 129 static int __init netstar_late_init(void)
 130 {
 131         /* TODO: Setup front panel switch here */
 132
 133         /* Setup panic notifier */
 134         notifier_chain_register(&panic_notifier_list, &panic_block);
 135
 136         return 0;
 137 }
 138
 139 postcore_initcall(netstar_late_init);
 140
 141 MACHINE_START(NETSTAR, "NetStar OMAP5910")
 142         /* Maintainer: Ladislav Michl <michl@2n.cz> */
 143         .phys_ram       = 0x10000000,
 144         .phys_io        = 0xfff00000,
 145         .io_pg_offst    = ((0xfef00000) >> 18) & 0xfffc,
 146         .boot_params    = 0x10000100,
 147         .map_io         = netstar_map_io,
 148         .init_irq       = netstar_init_irq,
 149         .init_machine   = netstar_init,
 150         .timer          = &omap_timer,
 151 MACHINE_END