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/mtd/physmap.h>
  22 #include <linux/notifier.h>
  23 #include <linux/reboot.h>
  24 #include <linux/serial_8250.h>
  25 #include <linux/serial_reg.h>
  26 #include <linux/smc91x.h>
  27
  28 #include <mach/hardware.h>
  29 #include <asm/mach-types.h>
  30 #include <asm/mach/arch.h>
  31 #include <asm/mach/map.h>
  32
  33 #include <plat/common.h>
  34 #include <mach/gpio.h>
  35 #include <plat/flash.h>
  36 #include <plat/mux.h>
  37 #include <plat/tc.h>
  38 #include <plat/usb.h>
  39
  40 static struct plat_serial8250_port voiceblue_ports[] = {
  41         {
  42                 .mapbase        = (unsigned long)(OMAP_CS1_PHYS + 0x40000),
  43                 .irq            = OMAP_GPIO_IRQ(12),
  44                 .flags          = UPF_BOOT_AUTOCONF | UPF_IOREMAP,
  45                 .iotype         = UPIO_MEM,
  46                 .regshift       = 1,
  47                 .uartclk        = 3686400,
  48         },
  49         {
  50                 .mapbase        = (unsigned long)(OMAP_CS1_PHYS + 0x50000),
  51                 .irq            = OMAP_GPIO_IRQ(13),
  52                 .flags          = UPF_BOOT_AUTOCONF | UPF_IOREMAP,
  53                 .iotype         = UPIO_MEM,
  54                 .regshift       = 1,
  55                 .uartclk        = 3686400,
  56         },
  57         {
  58                 .mapbase        = (unsigned long)(OMAP_CS1_PHYS + 0x60000),
  59                 .irq            = OMAP_GPIO_IRQ(14),
  60                 .flags          = UPF_BOOT_AUTOCONF | UPF_IOREMAP,
  61                 .iotype         = UPIO_MEM,
  62                 .regshift       = 1,
  63                 .uartclk        = 3686400,
  64         },
  65         {
  66                 .mapbase        = (unsigned long)(OMAP_CS1_PHYS + 0x70000),
  67                 .irq            = OMAP_GPIO_IRQ(15),
  68                 .flags          = UPF_BOOT_AUTOCONF | UPF_IOREMAP,
  69                 .iotype         = UPIO_MEM,
  70                 .regshift       = 1,
  71                 .uartclk        = 3686400,
  72         },
  73         { },
  74 };
  75
  76 static struct platform_device serial_device = {
  77         .name                   = "serial8250",
  78         .id                     = PLAT8250_DEV_PLATFORM1,
  79         .dev                    = {
  80                 .platform_data  = voiceblue_ports,
  81         },
  82 };
  83
  84 static int __init ext_uart_init(void)
  85 {
  86         return platform_device_register(&serial_device);
  87 }
  88 arch_initcall(ext_uart_init);
  89
  90 static struct physmap_flash_data voiceblue_flash_data = {
  91         .width          = 2,
  92         .set_vpp        = omap1_set_vpp,
  93 };
  94
  95 static struct resource voiceblue_flash_resource = {
  96         .start  = OMAP_CS0_PHYS,
  97         .end    = OMAP_CS0_PHYS + SZ_32M - 1,
  98         .flags  = IORESOURCE_MEM,
  99 };
 100
 101 static struct platform_device voiceblue_flash_device = {
 102         .name           = "physmap-flash",
 103         .id             = 0,
 104         .dev            = {
 105                 .platform_data  = &voiceblue_flash_data,
 106         },
 107         .num_resources  = 1,
 108         .resource       = &voiceblue_flash_resource,
 109 };
 110
 111 static struct smc91x_platdata voiceblue_smc91x_info = {
 112         .flags  = SMC91X_USE_16BIT | SMC91X_NOWAIT,
 113         .leda   = RPC_LED_100_10,
 114         .ledb   = RPC_LED_TX_RX,
 115 };
 116
 117 static struct resource voiceblue_smc91x_resources[] = {
 118         [0] = {
 119                 .start  = OMAP_CS2_PHYS + 0x300,
 120                 .end    = OMAP_CS2_PHYS + 0x300 + 16,
 121                 .flags  = IORESOURCE_MEM,
 122         },
 123         [1] = {
 124                 .start  = OMAP_GPIO_IRQ(8),
 125                 .end    = OMAP_GPIO_IRQ(8),
 126                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
 127         },
 128 };
 129
 130 static struct platform_device voiceblue_smc91x_device = {
 131         .name           = "smc91x",
 132         .id             = 0,
 133         .dev    = {
 134                 .platform_data  = &voiceblue_smc91x_info,
 135         },
 136         .num_resources  = ARRAY_SIZE(voiceblue_smc91x_resources),
 137         .resource       = voiceblue_smc91x_resources,
 138 };
 139
 140 static struct platform_device *voiceblue_devices[] __initdata = {
 141         &voiceblue_flash_device,
 142         &voiceblue_smc91x_device,
 143 };
 144
 145 static struct omap_usb_config voiceblue_usb_config __initdata = {
 146         .hmc_mode       = 3,
 147         .register_host  = 1,
 148         .register_dev   = 1,
 149         .pins[0]        = 2,
 150         .pins[1]        = 6,
 151         .pins[2]        = 6,
 152 };
 153
 154 static struct omap_board_config_kernel voiceblue_config[] = {
 155 };
 156
 157 static void __init voiceblue_init_irq(void)
 158 {
 159         omap1_init_common_hw();
 160         omap_init_irq();
 161         omap_gpio_init();
 162 }
 163
 164 static void __init voiceblue_init(void)
 165 {
 166         /* mux pins for uarts */
 167         omap_cfg_reg(UART1_TX);
 168         omap_cfg_reg(UART1_RTS);
 169         omap_cfg_reg(UART2_TX);
 170         omap_cfg_reg(UART2_RTS);
 171         omap_cfg_reg(UART3_TX);
 172         omap_cfg_reg(UART3_RX);
 173
 174         /* Watchdog */
 175         gpio_request(0, "Watchdog");
 176         /* smc91x reset */
 177         gpio_request(7, "SMC91x reset");
 178         gpio_direction_output(7, 1);
 179         udelay(2);      /* wait at least 100ns */
 180         gpio_set_value(7, 0);
 181         mdelay(50);     /* 50ms until PHY ready */
 182         /* smc91x interrupt pin */
 183         gpio_request(8, "SMC91x irq");
 184         /* 16C554 reset*/
 185         gpio_request(6, "16C554 reset");
 186         gpio_direction_output(6, 0);
 187         /* 16C554 interrupt pins */
 188         gpio_request(12, "16C554 irq");
 189         gpio_request(13, "16C554 irq");
 190         gpio_request(14, "16C554 irq");
 191         gpio_request(15, "16C554 irq");
 192         set_irq_type(gpio_to_irq(12), IRQ_TYPE_EDGE_RISING);
 193         set_irq_type(gpio_to_irq(13), IRQ_TYPE_EDGE_RISING);
 194         set_irq_type(gpio_to_irq(14), IRQ_TYPE_EDGE_RISING);
 195         set_irq_type(gpio_to_irq(15), IRQ_TYPE_EDGE_RISING);
 196
 197         platform_add_devices(voiceblue_devices, ARRAY_SIZE(voiceblue_devices));
 198         omap_board_config = voiceblue_config;
 199         omap_board_config_size = ARRAY_SIZE(voiceblue_config);
 200         omap_serial_init();
 201         omap1_usb_init(&voiceblue_usb_config);
 202         omap_register_i2c_bus(1, 100, NULL, 0);
 203
 204         /* There is a good chance board is going up, so enable power LED
 205          * (it is connected through invertor) */
 206         omap_writeb(0x00, OMAP_LPG1_LCR);
 207         omap_writeb(0x00, OMAP_LPG1_PMR);       /* Disable clock */
 208 }
 209
 210 static void __init voiceblue_map_io(void)
 211 {
 212         omap1_map_common_io();
 213 }
 214
 215 #define MACHINE_PANICED         1
 216 #define MACHINE_REBOOTING       2
 217 #define MACHINE_REBOOT          4
 218 static unsigned long machine_state;
 219
 220 static int panic_event(struct notifier_block *this, unsigned long event,
 221          void *ptr)
 222 {
 223         if (test_and_set_bit(MACHINE_PANICED, &machine_state))
 224                 return NOTIFY_DONE;
 225
 226         /* Flash power LED */
 227         omap_writeb(0x78, OMAP_LPG1_LCR);
 228         omap_writeb(0x01, OMAP_LPG1_PMR);       /* Enable clock */
 229
 230         return NOTIFY_DONE;
 231 }
 232
 233 static struct notifier_block panic_block = {
 234         .notifier_call  = panic_event,
 235 };
 236
 237 static int __init voiceblue_setup(void)
 238 {
 239         /* Setup panic notifier */
 240         atomic_notifier_chain_register(&panic_notifier_list, &panic_block);
 241
 242         return 0;
 243 }
 244 postcore_initcall(voiceblue_setup);
 245
 246 static int wdt_gpio_state;
 247
 248 void voiceblue_wdt_enable(void)
 249 {
 250         gpio_direction_output(0, 0);
 251         gpio_set_value(0, 1);
 252         gpio_set_value(0, 0);
 253         wdt_gpio_state = 0;
 254 }
 255
 256 void voiceblue_wdt_disable(void)
 257 {
 258         gpio_set_value(0, 0);
 259         gpio_set_value(0, 1);
 260         gpio_set_value(0, 0);
 261         gpio_direction_input(0);
 262 }
 263
 264 void voiceblue_wdt_ping(void)
 265 {
 266         if (test_bit(MACHINE_REBOOT, &machine_state))
 267                 return;
 268
 269         wdt_gpio_state = !wdt_gpio_state;
 270         gpio_set_value(0, wdt_gpio_state);
 271 }
 272
 273 void voiceblue_reset(void)
 274 {
 275         set_bit(MACHINE_REBOOT, &machine_state);
 276         voiceblue_wdt_enable();
 277         while (1) ;
 278 }
 279
 280 EXPORT_SYMBOL(voiceblue_wdt_enable);
 281 EXPORT_SYMBOL(voiceblue_wdt_disable);
 282 EXPORT_SYMBOL(voiceblue_wdt_ping);
 283
 284 MACHINE_START(VOICEBLUE, "VoiceBlue OMAP5910")
 285         /* Maintainer: Ladislav Michl <michl@2n.cz> */
 286         .boot_params    = 0x10000100,
 287         .map_io         = voiceblue_map_io,
 288         .reserve        = omap_reserve,
 289         .init_irq       = voiceblue_init_irq,
 290         .init_machine   = voiceblue_init,
 291         .timer          = &omap_timer,
 292 MACHINE_END