arch/arm/mach-omap1/board-voiceblue.c

   1 /*
   2  * linux/arch/arm/mach-omap1/board-voiceblue.c
   3  *
   4  * Modified from board-generic.c
   5  *
   6  * Copyright (C) 2004 2N Telekomunikace, Ladislav Michl <michl@2n.cz>
   7  *
   8  * Code for OMAP5910 based VoiceBlue board (VoIP to GSM gateway).
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License version 2 as
  12  * published by the Free Software Foundation.
  13  */
  14
  15 #include <linux/delay.h>
  16 #include <linux/device.h>
  17 #include <linux/interrupt.h>
  18 #include <linux/init.h>
  19 #include <linux/kernel.h>
  20 #include <linux/notifier.h>
  21 #include <linux/reboot.h>
  22 #include <linux/serial_8250.h>
  23 #include <linux/serial_reg.h>
  24
  25 #include <asm/hardware.h>
  26 #include <asm/mach-types.h>
  27 #include <asm/mach/arch.h>
  28 #include <asm/mach/map.h>
  29
  30 #include <asm/arch/gpio.h>
  31 #include <asm/arch/tc.h>
  32 #include <asm/arch/mux.h>
  33 #include <asm/arch/usb.h>
  34 #include <asm/arch/common.h>
  35
  36 extern void omap_init_time(void);
  37 extern int omap_gpio_init(void);
  38
  39 static struct plat_serial8250_port voiceblue_ports[] = {
  40         {
  41                 .mapbase        = (unsigned long)(OMAP_CS1_PHYS + 0x40000),
  42                 .irq            = OMAP_GPIO_IRQ(12),
  43                 .flags          = UPF_BOOT_AUTOCONF | UPF_IOREMAP,
  44                 .iotype         = UPIO_MEM,
  45                 .regshift       = 1,
  46                 .uartclk        = 3686400,
  47         },
  48         {
  49                 .mapbase        = (unsigned long)(OMAP_CS1_PHYS + 0x50000),
  50                 .irq            = OMAP_GPIO_IRQ(13),
  51                 .flags          = UPF_BOOT_AUTOCONF | UPF_IOREMAP,
  52                 .iotype         = UPIO_MEM,
  53                 .regshift       = 1,
  54                 .uartclk        = 3686400,
  55         },
  56         {
  57                 .mapbase        = (unsigned long)(OMAP_CS1_PHYS + 0x60000),
  58                 .irq            = OMAP_GPIO_IRQ(14),
  59                 .flags          = UPF_BOOT_AUTOCONF | UPF_IOREMAP,
  60                 .iotype         = UPIO_MEM,
  61                 .regshift       = 1,
  62                 .uartclk        = 3686400,
  63         },
  64         {
  65                 .mapbase        = (unsigned long)(OMAP_CS1_PHYS + 0x70000),
  66                 .irq            = OMAP_GPIO_IRQ(15),
  67                 .flags          = UPF_BOOT_AUTOCONF | UPF_IOREMAP,
  68                 .iotype         = UPIO_MEM,
  69                 .regshift       = 1,
  70                 .uartclk        = 3686400,
  71         },
  72         { },
  73 };
  74
  75 static struct platform_device serial_device = {
  76         .name                   = "serial8250",
  77         .id                     = 1,
  78         .dev                    = {
  79                 .platform_data  = voiceblue_ports,
  80         },
  81 };
  82
  83 static int __init ext_uart_init(void)
  84 {
  85         return platform_device_register(&serial_device);
  86 }
  87 arch_initcall(ext_uart_init);
  88
  89 static struct resource voiceblue_smc91x_resources[] = {
  90         [0] = {
  91                 .start  = OMAP_CS2_PHYS + 0x300,
  92                 .end    = OMAP_CS2_PHYS + 0x300 + 16,
  93                 .flags  = IORESOURCE_MEM,
  94         },
  95         [1] = {
  96                 .start  = OMAP_GPIO_IRQ(8),
  97                 .end    = OMAP_GPIO_IRQ(8),
  98                 .flags  = IORESOURCE_IRQ,
  99         },
 100 };
 101
 102 static struct platform_device voiceblue_smc91x_device = {
 103         .name           = "smc91x",
 104         .id             = 0,
 105         .num_resources  = ARRAY_SIZE(voiceblue_smc91x_resources),
 106         .resource       = voiceblue_smc91x_resources,
 107 };
 108
 109 static struct platform_device *voiceblue_devices[] __initdata = {
 110         &voiceblue_smc91x_device,
 111 };
 112
 113 static struct omap_usb_config voiceblue_usb_config __initdata = {
 114         .hmc_mode       = 3,
 115         .register_host  = 1,
 116         .register_dev   = 1,
 117         .pins[0]        = 2,
 118         .pins[1]        = 6,
 119         .pins[2]        = 6,
 120 };
 121
 122 static struct omap_board_config_kernel voiceblue_config[] = {
 123         { OMAP_TAG_USB, &voiceblue_usb_config },
 124 };
 125
 126 static void __init voiceblue_init_irq(void)
 127 {
 128         omap_init_irq();
 129         omap_gpio_init();
 130 }
 131
 132 static void __init voiceblue_init(void)
 133 {
 134         /* There is a good chance board is going up, so enable Power LED
 135          * (it is connected through invertor) */
 136         omap_writeb(0x00, OMAP_LPG1_LCR);
 137         /* Watchdog */
 138         omap_request_gpio(0);
 139         /* smc91x reset */
 140         omap_request_gpio(7);
 141         omap_set_gpio_direction(7, 0);
 142         omap_set_gpio_dataout(7, 1);
 143         udelay(2);      /* wait at least 100ns */
 144         omap_set_gpio_dataout(7, 0);
 145         mdelay(50);     /* 50ms until PHY ready */
 146         /* smc91x interrupt pin */
 147         omap_request_gpio(8);
 148         omap_set_gpio_edge_ctrl(8, OMAP_GPIO_RISING_EDGE);
 149         /* 16C554 reset*/
 150         omap_request_gpio(6);
 151         omap_set_gpio_direction(6, 0);
 152         omap_set_gpio_dataout(6, 0);
 153         /* 16C554 interrupt pins */
 154         omap_request_gpio(12);
 155         omap_request_gpio(13);
 156         omap_request_gpio(14);
 157         omap_request_gpio(15);
 158         omap_set_gpio_edge_ctrl(12, OMAP_GPIO_RISING_EDGE);
 159         omap_set_gpio_edge_ctrl(13, OMAP_GPIO_RISING_EDGE);
 160         omap_set_gpio_edge_ctrl(14, OMAP_GPIO_RISING_EDGE);
 161         omap_set_gpio_edge_ctrl(15, OMAP_GPIO_RISING_EDGE);
 162
 163         platform_add_devices(voiceblue_devices, ARRAY_SIZE(voiceblue_devices));
 164         omap_board_config = voiceblue_config;
 165         omap_board_config_size = ARRAY_SIZE(voiceblue_config);
 166 }
 167
 168 static int __initdata omap_serial_ports[OMAP_MAX_NR_PORTS] = {1, 1, 1};
 169
 170 static void __init voiceblue_map_io(void)
 171 {
 172         omap_map_common_io();
 173         omap_serial_init(omap_serial_ports);
 174 }
 175
 176 #define MACHINE_PANICED         1
 177 #define MACHINE_REBOOTING       2
 178 #define MACHINE_REBOOT          4
 179 static unsigned long machine_state;
 180
 181 static int panic_event(struct notifier_block *this, unsigned long event,
 182          void *ptr)
 183 {
 184         if (test_and_set_bit(MACHINE_PANICED, &machine_state))
 185                 return NOTIFY_DONE;
 186
 187         /* Flash Power LED
 188          * (TODO: Enable clock right way (enabled in bootloader already)) */
 189         omap_writeb(0x78, OMAP_LPG1_LCR);
 190
 191         return NOTIFY_DONE;
 192 }
 193
 194 static struct notifier_block panic_block = {
 195         .notifier_call  = panic_event,
 196 };
 197
 198 static int __init setup_notifier(void)
 199 {
 200         /* Setup panic notifier */
 201         notifier_chain_register(&panic_notifier_list, &panic_block);
 202
 203         return 0;
 204 }
 205
 206 postcore_initcall(setup_notifier);
 207
 208 static int wdt_gpio_state;
 209
 210 void voiceblue_wdt_enable(void)
 211 {
 212         omap_set_gpio_direction(0, 0);
 213         omap_set_gpio_dataout(0, 0);
 214         omap_set_gpio_dataout(0, 1);
 215         omap_set_gpio_dataout(0, 0);
 216         wdt_gpio_state = 0;
 217 }
 218
 219 void voiceblue_wdt_disable(void)
 220 {
 221         omap_set_gpio_dataout(0, 0);
 222         omap_set_gpio_dataout(0, 1);
 223         omap_set_gpio_dataout(0, 0);
 224         omap_set_gpio_direction(0, 1);
 225 }
 226
 227 void voiceblue_wdt_ping(void)
 228 {
 229         if (test_bit(MACHINE_REBOOT, &machine_state))
 230                 return;
 231
 232         wdt_gpio_state = !wdt_gpio_state;
 233         omap_set_gpio_dataout(0, wdt_gpio_state);
 234 }
 235
 236 void voiceblue_reset(void)
 237 {
 238         set_bit(MACHINE_REBOOT, &machine_state);
 239         voiceblue_wdt_enable();
 240         while (1) ;
 241 }
 242
 243 EXPORT_SYMBOL(voiceblue_wdt_enable);
 244 EXPORT_SYMBOL(voiceblue_wdt_disable);
 245 EXPORT_SYMBOL(voiceblue_wdt_ping);
 246
 247 MACHINE_START(VOICEBLUE, "VoiceBlue OMAP5910")
 248         /* Maintainer: Ladislav Michl <michl@2n.cz> */
 249         .phys_ram       = 0x10000000,
 250         .phys_io        = 0xfff00000,
 251         .io_pg_offst    = ((0xfef00000) >> 18) & 0xfffc,
 252         .boot_params    = 0x10000100,
 253         .map_io         = voiceblue_map_io,
 254         .init_irq       = voiceblue_init_irq,
 255         .init_machine   = voiceblue_init,
 256         .timer          = &omap_timer,
 257 MACHINE_END