release/src-rt-6.x/linux/linux-2.6/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/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/flash.h>
  29 #include <asm/mach/map.h>
  30
  31 #include <asm/arch/common.h>
  32 #include <asm/arch/gpio.h>
  33 #include <asm/arch/mux.h>
  34 #include <asm/arch/tc.h>
  35 #include <asm/arch/usb.h>
  36
  37 extern void omap_init_time(void);
  38 extern int omap_gpio_init(void);
  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 flash_platform_data voiceblue_flash_data = {
  91         .map_name       = "cfi_probe",
  92         .width          = 2,
  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           = "omapflash",
 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 resource voiceblue_smc91x_resources[] = {
 112         [0] = {
 113                 .start  = OMAP_CS2_PHYS + 0x300,
 114                 .end    = OMAP_CS2_PHYS + 0x300 + 16,
 115                 .flags  = IORESOURCE_MEM,
 116         },
 117         [1] = {
 118                 .start  = OMAP_GPIO_IRQ(8),
 119                 .end    = OMAP_GPIO_IRQ(8),
 120                 .flags  = IORESOURCE_IRQ,
 121         },
 122 };
 123
 124 static struct platform_device voiceblue_smc91x_device = {
 125         .name           = "smc91x",
 126         .id             = 0,
 127         .num_resources  = ARRAY_SIZE(voiceblue_smc91x_resources),
 128         .resource       = voiceblue_smc91x_resources,
 129 };
 130
 131 static struct platform_device *voiceblue_devices[] __initdata = {
 132         &voiceblue_flash_device,
 133         &voiceblue_smc91x_device,
 134 };
 135
 136 static struct omap_usb_config voiceblue_usb_config __initdata = {
 137         .hmc_mode       = 3,
 138         .register_host  = 1,
 139         .register_dev   = 1,
 140         .pins[0]        = 2,
 141         .pins[1]        = 6,
 142         .pins[2]        = 6,
 143 };
 144
 145 static struct omap_mmc_config voiceblue_mmc_config __initdata = {
 146         .mmc[0] = {
 147                 .enabled        = 1,
 148                 .power_pin      = 2,
 149                 .switch_pin     = -1,
 150         },
 151 };
 152
 153 static struct omap_uart_config voiceblue_uart_config __initdata = {
 154         .enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
 155 };
 156
 157 static struct omap_board_config_kernel voiceblue_config[] = {
 158         { OMAP_TAG_USB,  &voiceblue_usb_config },
 159         { OMAP_TAG_MMC,  &voiceblue_mmc_config },
 160         { OMAP_TAG_UART, &voiceblue_uart_config },
 161 };
 162
 163 static void __init voiceblue_init_irq(void)
 164 {
 165         omap1_init_common_hw();
 166         omap_init_irq();
 167         omap_gpio_init();
 168 }
 169
 170 static void __init voiceblue_init(void)
 171 {
 172         /* Watchdog */
 173         omap_request_gpio(0);
 174         /* smc91x reset */
 175         omap_request_gpio(7);
 176         omap_set_gpio_direction(7, 0);
 177         omap_set_gpio_dataout(7, 1);
 178         udelay(2);      /* wait at least 100ns */
 179         omap_set_gpio_dataout(7, 0);
 180         mdelay(50);     /* 50ms until PHY ready */
 181         /* smc91x interrupt pin */
 182         omap_request_gpio(8);
 183         /* 16C554 reset*/
 184         omap_request_gpio(6);
 185         omap_set_gpio_direction(6, 0);
 186         omap_set_gpio_dataout(6, 0);
 187         /* 16C554 interrupt pins */
 188         omap_request_gpio(12);
 189         omap_request_gpio(13);
 190         omap_request_gpio(14);
 191         omap_request_gpio(15);
 192         set_irq_type(OMAP_GPIO_IRQ(12), IRQT_RISING);
 193         set_irq_type(OMAP_GPIO_IRQ(13), IRQT_RISING);
 194         set_irq_type(OMAP_GPIO_IRQ(14), IRQT_RISING);
 195         set_irq_type(OMAP_GPIO_IRQ(15), IRQT_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
 202         /* There is a good chance board is going up, so enable power LED
 203          * (it is connected through invertor) */
 204         omap_writeb(0x00, OMAP_LPG1_LCR);
 205         omap_writeb(0x00, OMAP_LPG1_PMR);       /* Disable clock */
 206 }
 207
 208 static void __init voiceblue_map_io(void)
 209 {
 210         omap1_map_common_io();
 211 }
 212
 213 #define MACHINE_PANICED         1
 214 #define MACHINE_REBOOTING       2
 215 #define MACHINE_REBOOT          4
 216 static unsigned long machine_state;
 217
 218 static int panic_event(struct notifier_block *this, unsigned long event,
 219          void *ptr)
 220 {
 221         if (test_and_set_bit(MACHINE_PANICED, &machine_state))
 222                 return NOTIFY_DONE;
 223
 224         /* Flash power LED */
 225         omap_writeb(0x78, OMAP_LPG1_LCR);
 226         omap_writeb(0x01, OMAP_LPG1_PMR);       /* Enable clock */
 227
 228         return NOTIFY_DONE;
 229 }
 230
 231 static struct notifier_block panic_block = {
 232         .notifier_call  = panic_event,
 233 };
 234
 235 static int __init voiceblue_setup(void)
 236 {
 237         /* Setup panic notifier */
 238         notifier_chain_register(&panic_notifier_list, &panic_block);
 239
 240         return 0;
 241 }
 242 postcore_initcall(voiceblue_setup);
 243
 244 static int wdt_gpio_state;
 245
 246 void voiceblue_wdt_enable(void)
 247 {
 248         omap_set_gpio_direction(0, 0);
 249         omap_set_gpio_dataout(0, 0);
 250         omap_set_gpio_dataout(0, 1);
 251         omap_set_gpio_dataout(0, 0);
 252         wdt_gpio_state = 0;
 253 }
 254
 255 void voiceblue_wdt_disable(void)
 256 {
 257         omap_set_gpio_dataout(0, 0);
 258         omap_set_gpio_dataout(0, 1);
 259         omap_set_gpio_dataout(0, 0);
 260         omap_set_gpio_direction(0, 1);
 261 }
 262
 263 void voiceblue_wdt_ping(void)
 264 {
 265         if (test_bit(MACHINE_REBOOT, &machine_state))
 266                 return;
 267
 268         wdt_gpio_state = !wdt_gpio_state;
 269         omap_set_gpio_dataout(0, wdt_gpio_state);
 270 }
 271
 272 void voiceblue_reset(void)
 273 {
 274         set_bit(MACHINE_REBOOT, &machine_state);
 275         voiceblue_wdt_enable();
 276         while (1) ;
 277 }
 278
 279 EXPORT_SYMBOL(voiceblue_wdt_enable);
 280 EXPORT_SYMBOL(voiceblue_wdt_disable);
 281 EXPORT_SYMBOL(voiceblue_wdt_ping);
 282
 283 MACHINE_START(VOICEBLUE, "VoiceBlue OMAP5910")
 284         /* Maintainer: Ladislav Michl <michl@2n.cz> */
 285         .phys_io        = 0xfff00000,
 286         .io_pg_offst    = ((0xfef00000) >> 18) & 0xfffc,
 287         .boot_params    = 0x10000100,
 288         .map_io         = voiceblue_map_io,
 289         .init_irq       = voiceblue_init_irq,
 290         .init_machine   = voiceblue_init,
 291         .timer          = &omap_timer,
 292 MACHINE_END