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/platform_device.h>
  17 #include <linux/interrupt.h>
  18 #include <linux/irq.h>
  19 #include <linux/init.h>
  20 #include <linux/kernel.h>
  21 #include <linux/notifier.h>
  22 #include <linux/reboot.h>
  23 #include <linux/serial_8250.h>
  24 #include <linux/serial_reg.h>
  25 #include <linux/irq.h>
  26
  27 #include <mach/hardware.h>
  28 #include <asm/mach-types.h>
  29 #include <asm/mach/arch.h>
  30 #include <asm/mach/flash.h>
  31 #include <asm/mach/map.h>
  32
  33 #include <mach/common.h>
  34 #include <mach/gpio.h>
  35 #include <mach/mux.h>
  36 #include <mach/tc.h>
  37 #include <mach/usb.h>
  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                     = PLAT8250_DEV_PLATFORM1,
  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 flash_platform_data voiceblue_flash_data = {
  90         .map_name       = "cfi_probe",
  91         .width          = 2,
  92 };
  93
  94 static struct resource voiceblue_flash_resource = {
  95         .start  = OMAP_CS0_PHYS,
  96         .end    = OMAP_CS0_PHYS + SZ_32M - 1,
  97         .flags  = IORESOURCE_MEM,
  98 };
  99
 100 static struct platform_device voiceblue_flash_device = {
 101         .name           = "omapflash",
 102         .id             = 0,
 103         .dev            = {
 104                 .platform_data  = &voiceblue_flash_data,
 105         },
 106         .num_resources  = 1,
 107         .resource       = &voiceblue_flash_resource,
 108 };
 109
 110 static struct resource voiceblue_smc91x_resources[] = {
 111         [0] = {
 112                 .start  = OMAP_CS2_PHYS + 0x300,
 113                 .end    = OMAP_CS2_PHYS + 0x300 + 16,
 114                 .flags  = IORESOURCE_MEM,
 115         },
 116         [1] = {
 117                 .start  = OMAP_GPIO_IRQ(8),
 118                 .end    = OMAP_GPIO_IRQ(8),
 119                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
 120         },
 121 };
 122
 123 static struct platform_device voiceblue_smc91x_device = {
 124         .name           = "smc91x",
 125         .id             = 0,
 126         .num_resources  = ARRAY_SIZE(voiceblue_smc91x_resources),
 127         .resource       = voiceblue_smc91x_resources,
 128 };
 129
 130 static struct platform_device *voiceblue_devices[] __initdata = {
 131         &voiceblue_flash_device,
 132         &voiceblue_smc91x_device,
 133 };
 134
 135 static struct omap_usb_config voiceblue_usb_config __initdata = {
 136         .hmc_mode       = 3,
 137         .register_host  = 1,
 138         .register_dev   = 1,
 139         .pins[0]        = 2,
 140         .pins[1]        = 6,
 141         .pins[2]        = 6,
 142 };
 143
 144 static struct omap_uart_config voiceblue_uart_config __initdata = {
 145         .enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
 146 };
 147
 148 static struct omap_board_config_kernel voiceblue_config[] = {
 149         { OMAP_TAG_USB,  &voiceblue_usb_config },
 150         { OMAP_TAG_UART, &voiceblue_uart_config },
 151 };
 152
 153 static void __init voiceblue_init_irq(void)
 154 {
 155         omap1_init_common_hw();
 156         omap_init_irq();
 157         omap_gpio_init();
 158 }
 159
 160 static void __init voiceblue_init(void)
 161 {
 162         /* Watchdog */
 163         gpio_request(0, "Watchdog");
 164         /* smc91x reset */
 165         gpio_request(7, "SMC91x reset");
 166         gpio_direction_output(7, 1);
 167         udelay(2);      /* wait at least 100ns */
 168         gpio_set_value(7, 0);
 169         mdelay(50);     /* 50ms until PHY ready */
 170         /* smc91x interrupt pin */
 171         gpio_request(8, "SMC91x irq");
 172         /* 16C554 reset*/
 173         gpio_request(6, "16C554 reset");
 174         gpio_direction_output(6, 0);
 175         /* 16C554 interrupt pins */
 176         gpio_request(12, "16C554 irq");
 177         gpio_request(13, "16C554 irq");
 178         gpio_request(14, "16C554 irq");
 179         gpio_request(15, "16C554 irq");
 180         set_irq_type(gpio_to_irq(12), IRQ_TYPE_EDGE_RISING);
 181         set_irq_type(gpio_to_irq(13), IRQ_TYPE_EDGE_RISING);
 182         set_irq_type(gpio_to_irq(14), IRQ_TYPE_EDGE_RISING);
 183         set_irq_type(gpio_to_irq(15), IRQ_TYPE_EDGE_RISING);
 184
 185         platform_add_devices(voiceblue_devices, ARRAY_SIZE(voiceblue_devices));
 186         omap_board_config = voiceblue_config;
 187         omap_board_config_size = ARRAY_SIZE(voiceblue_config);
 188         omap_serial_init();
 189         omap_register_i2c_bus(1, 100, NULL, 0);
 190
 191         /* There is a good chance board is going up, so enable power LED
 192          * (it is connected through invertor) */
 193         omap_writeb(0x00, OMAP_LPG1_LCR);
 194         omap_writeb(0x00, OMAP_LPG1_PMR);       /* Disable clock */
 195 }
 196
 197 static void __init voiceblue_map_io(void)
 198 {
 199         omap1_map_common_io();
 200 }
 201
 202 #define MACHINE_PANICED         1
 203 #define MACHINE_REBOOTING       2
 204 #define MACHINE_REBOOT          4
 205 static unsigned long machine_state;
 206
 207 static int panic_event(struct notifier_block *this, unsigned long event,
 208          void *ptr)
 209 {
 210         if (test_and_set_bit(MACHINE_PANICED, &machine_state))
 211                 return NOTIFY_DONE;
 212
 213         /* Flash power LED */
 214         omap_writeb(0x78, OMAP_LPG1_LCR);
 215         omap_writeb(0x01, OMAP_LPG1_PMR);       /* Enable clock */
 216
 217         return NOTIFY_DONE;
 218 }
 219
 220 static struct notifier_block panic_block = {
 221         .notifier_call  = panic_event,
 222 };
 223
 224 static int __init voiceblue_setup(void)
 225 {
 226         /* Setup panic notifier */
 227         atomic_notifier_chain_register(&panic_notifier_list, &panic_block);
 228
 229         return 0;
 230 }
 231 postcore_initcall(voiceblue_setup);
 232
 233 static int wdt_gpio_state;
 234
 235 void voiceblue_wdt_enable(void)
 236 {
 237         gpio_direction_output(0, 0);
 238         gpio_set_value(0, 1);
 239         gpio_set_value(0, 0);
 240         wdt_gpio_state = 0;
 241 }
 242
 243 void voiceblue_wdt_disable(void)
 244 {
 245         gpio_set_value(0, 0);
 246         gpio_set_value(0, 1);
 247         gpio_set_value(0, 0);
 248         gpio_direction_input(0);
 249 }
 250
 251 void voiceblue_wdt_ping(void)
 252 {
 253         if (test_bit(MACHINE_REBOOT, &machine_state))
 254                 return;
 255
 256         wdt_gpio_state = !wdt_gpio_state;
 257         gpio_set_value(0, wdt_gpio_state);
 258 }
 259
 260 void voiceblue_reset(void)
 261 {
 262         set_bit(MACHINE_REBOOT, &machine_state);
 263         voiceblue_wdt_enable();
 264         while (1) ;
 265 }
 266
 267 EXPORT_SYMBOL(voiceblue_wdt_enable);
 268 EXPORT_SYMBOL(voiceblue_wdt_disable);
 269 EXPORT_SYMBOL(voiceblue_wdt_ping);
 270
 271 MACHINE_START(VOICEBLUE, "VoiceBlue OMAP5910")
 272         /* Maintainer: Ladislav Michl <michl@2n.cz> */
 273         .phys_io        = 0xfff00000,
 274         .io_pg_offst    = ((0xfef00000) >> 18) & 0xfffc,
 275         .boot_params    = 0x10000100,
 276         .map_io         = voiceblue_map_io,
 277         .init_irq       = voiceblue_init_irq,
 278         .init_machine   = voiceblue_init,
 279         .timer          = &omap_timer,
 280 MACHINE_END