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/platform_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 struct omap_uart_config netstar_uart_config __initdata = {
  59         .enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
  60 };
  61
  62 static struct omap_board_config_kernel netstar_config[] = {
  63         { OMAP_TAG_UART,        &netstar_uart_config },
  64 };
  65
  66 static void __init netstar_init_irq(void)
  67 {
  68         omap1_init_common_hw();
  69         omap_init_irq();
  70         omap_gpio_init();
  71 }
  72
  73 static void __init netstar_init(void)
  74 {
  75         /* green LED */
  76         omap_request_gpio(4);
  77         omap_set_gpio_direction(4, 0);
  78         /* smc91x reset */
  79         omap_request_gpio(7);
  80         omap_set_gpio_direction(7, 0);
  81         omap_set_gpio_dataout(7, 1);
  82         udelay(2);      /* wait at least 100ns */
  83         omap_set_gpio_dataout(7, 0);
  84         mdelay(50);     /* 50ms until PHY ready */
  85         /* smc91x interrupt pin */
  86         omap_request_gpio(8);
  87
  88         omap_request_gpio(12);
  89         omap_request_gpio(13);
  90         omap_request_gpio(14);
  91         omap_request_gpio(15);
  92         set_irq_type(OMAP_GPIO_IRQ(12), IRQT_FALLING);
  93         set_irq_type(OMAP_GPIO_IRQ(13), IRQT_FALLING);
  94         set_irq_type(OMAP_GPIO_IRQ(14), IRQT_FALLING);
  95         set_irq_type(OMAP_GPIO_IRQ(15), IRQT_FALLING);
  96
  97         platform_add_devices(netstar_devices, ARRAY_SIZE(netstar_devices));
  98
  99         /* Switch on green LED */
 100         omap_set_gpio_dataout(4, 0);
 101         /* Switch off red LED */
 102         omap_writeb(0x00, OMAP_LPG1_PMR);       /* Disable clock */
 103         omap_writeb(0x80, OMAP_LPG1_LCR);
 104
 105         omap_board_config = netstar_config;
 106         omap_board_config_size = ARRAY_SIZE(netstar_config);
 107         omap_serial_init();
 108 }
 109
 110 static void __init netstar_map_io(void)
 111 {
 112         omap1_map_common_io();
 113 }
 114
 115 #define MACHINE_PANICED         1
 116 #define MACHINE_REBOOTING       2
 117 #define MACHINE_REBOOT          4
 118 static unsigned long machine_state;
 119
 120 static int panic_event(struct notifier_block *this, unsigned long event,
 121          void *ptr)
 122 {
 123         if (test_and_set_bit(MACHINE_PANICED, &machine_state))
 124                 return NOTIFY_DONE;
 125
 126         /* Switch off green LED */
 127         omap_set_gpio_dataout(4, 1);
 128         /* Flash red LED */
 129         omap_writeb(0x78, OMAP_LPG1_LCR);
 130         omap_writeb(0x01, OMAP_LPG1_PMR);       /* Enable clock */
 131
 132         return NOTIFY_DONE;
 133 }
 134
 135 static struct notifier_block panic_block = {
 136         .notifier_call  = panic_event,
 137 };
 138
 139 static int __init netstar_late_init(void)
 140 {
 141         /* TODO: Setup front panel switch here */
 142
 143         /* Setup panic notifier */
 144         notifier_chain_register(&panic_notifier_list, &panic_block);
 145
 146         return 0;
 147 }
 148
 149 postcore_initcall(netstar_late_init);
 150
 151 MACHINE_START(NETSTAR, "NetStar OMAP5910")
 152         /* Maintainer: Ladislav Michl <michl@2n.cz> */
 153         .phys_io        = 0xfff00000,
 154         .io_pg_offst    = ((0xfef00000) >> 18) & 0xfffc,
 155         .boot_params    = 0x10000100,
 156         .map_io         = netstar_map_io,
 157         .init_irq       = netstar_init_irq,
 158         .init_machine   = netstar_init,
 159         .timer          = &omap_timer,
 160 MACHINE_END