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 static struct plat_serial8250_port voiceblue_ports[] = {
  38         {
  39                 .mapbase        = (unsigned long)(OMAP_CS1_PHYS + 0x40000),
  40                 .irq            = OMAP_GPIO_IRQ(12),
  41                 .flags          = UPF_BOOT_AUTOCONF | UPF_IOREMAP,
  42                 .iotype         = UPIO_MEM,
  43                 .regshift       = 1,
  44                 .uartclk        = 3686400,
  45         },
  46         {
  47                 .mapbase        = (unsigned long)(OMAP_CS1_PHYS + 0x50000),
  48                 .irq            = OMAP_GPIO_IRQ(13),
  49                 .flags          = UPF_BOOT_AUTOCONF | UPF_IOREMAP,
  50                 .iotype         = UPIO_MEM,
  51                 .regshift       = 1,
  52                 .uartclk        = 3686400,
  53         },
  54         {
  55                 .mapbase        = (unsigned long)(OMAP_CS1_PHYS + 0x60000),
  56                 .irq            = OMAP_GPIO_IRQ(14),
  57                 .flags          = UPF_BOOT_AUTOCONF | UPF_IOREMAP,
  58                 .iotype         = UPIO_MEM,
  59                 .regshift       = 1,
  60                 .uartclk        = 3686400,
  61         },
  62         {
  63                 .mapbase        = (unsigned long)(OMAP_CS1_PHYS + 0x70000),
  64                 .irq            = OMAP_GPIO_IRQ(15),
  65                 .flags          = UPF_BOOT_AUTOCONF | UPF_IOREMAP,
  66                 .iotype         = UPIO_MEM,
  67                 .regshift       = 1,
  68                 .uartclk        = 3686400,
  69         },
  70         { },
  71 };
  72
  73 static struct platform_device serial_device = {
  74         .name                   = "serial8250",
  75         .id                     = PLAT8250_DEV_PLATFORM1,
  76         .dev                    = {
  77                 .platform_data  = voiceblue_ports,
  78         },
  79 };
  80
  81 static int __init ext_uart_init(void)
  82 {
  83         return platform_device_register(&serial_device);
  84 }
  85 arch_initcall(ext_uart_init);
  86
  87 static struct flash_platform_data voiceblue_flash_data = {
  88         .map_name       = "cfi_probe",
  89         .width          = 2,
  90 };
  91
  92 static struct resource voiceblue_flash_resource = {
  93         .start  = OMAP_CS0_PHYS,
  94         .end    = OMAP_CS0_PHYS + SZ_32M - 1,
  95         .flags  = IORESOURCE_MEM,
  96 };
  97
  98 static struct platform_device voiceblue_flash_device = {
  99         .name           = "omapflash",
 100         .id             = 0,
 101         .dev            = {
 102                 .platform_data  = &voiceblue_flash_data,
 103         },
 104         .num_resources  = 1,
 105         .resource       = &voiceblue_flash_resource,
 106 };
 107
 108 static struct resource voiceblue_smc91x_resources[] = {
 109         [0] = {
 110                 .start  = OMAP_CS2_PHYS + 0x300,
 111                 .end    = OMAP_CS2_PHYS + 0x300 + 16,
 112                 .flags  = IORESOURCE_MEM,
 113         },
 114         [1] = {
 115                 .start  = OMAP_GPIO_IRQ(8),
 116                 .end    = OMAP_GPIO_IRQ(8),
 117                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
 118         },
 119 };
 120
 121 static struct platform_device voiceblue_smc91x_device = {
 122         .name           = "smc91x",
 123         .id             = 0,
 124         .num_resources  = ARRAY_SIZE(voiceblue_smc91x_resources),
 125         .resource       = voiceblue_smc91x_resources,
 126 };
 127
 128 static struct platform_device *voiceblue_devices[] __initdata = {
 129         &voiceblue_flash_device,
 130         &voiceblue_smc91x_device,
 131 };
 132
 133 static struct omap_usb_config voiceblue_usb_config __initdata = {
 134         .hmc_mode       = 3,
 135         .register_host  = 1,
 136         .register_dev   = 1,
 137         .pins[0]        = 2,
 138         .pins[1]        = 6,
 139         .pins[2]        = 6,
 140 };
 141
 142 static struct omap_mmc_config voiceblue_mmc_config __initdata = {
 143         .mmc[0] = {
 144                 .enabled        = 1,
 145                 .power_pin      = 2,
 146                 .switch_pin     = -1,
 147         },
 148 };
 149
 150 static struct omap_uart_config voiceblue_uart_config __initdata = {
 151         .enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
 152 };
 153
 154 static struct omap_board_config_kernel voiceblue_config[] = {
 155         { OMAP_TAG_USB,  &voiceblue_usb_config },
 156         { OMAP_TAG_MMC,  &voiceblue_mmc_config },
 157         { OMAP_TAG_UART, &voiceblue_uart_config },
 158 };
 159
 160 static void __init voiceblue_init_irq(void)
 161 {
 162         omap1_init_common_hw();
 163         omap_init_irq();
 164         omap_gpio_init();
 165 }
 166
 167 static void __init voiceblue_init(void)
 168 {
 169         /* Watchdog */
 170         omap_request_gpio(0);
 171         /* smc91x reset */
 172         omap_request_gpio(7);
 173         omap_set_gpio_direction(7, 0);
 174         omap_set_gpio_dataout(7, 1);
 175         udelay(2);      /* wait at least 100ns */
 176         omap_set_gpio_dataout(7, 0);
 177         mdelay(50);     /* 50ms until PHY ready */
 178         /* smc91x interrupt pin */
 179         omap_request_gpio(8);
 180         /* 16C554 reset*/
 181         omap_request_gpio(6);
 182         omap_set_gpio_direction(6, 0);
 183         omap_set_gpio_dataout(6, 0);
 184         /* 16C554 interrupt pins */
 185         omap_request_gpio(12);
 186         omap_request_gpio(13);
 187         omap_request_gpio(14);
 188         omap_request_gpio(15);
 189         set_irq_type(OMAP_GPIO_IRQ(12), IRQ_TYPE_EDGE_RISING);
 190         set_irq_type(OMAP_GPIO_IRQ(13), IRQ_TYPE_EDGE_RISING);
 191         set_irq_type(OMAP_GPIO_IRQ(14), IRQ_TYPE_EDGE_RISING);
 192         set_irq_type(OMAP_GPIO_IRQ(15), IRQ_TYPE_EDGE_RISING);
 193
 194         platform_add_devices(voiceblue_devices, ARRAY_SIZE(voiceblue_devices));
 195         omap_board_config = voiceblue_config;
 196         omap_board_config_size = ARRAY_SIZE(voiceblue_config);
 197         omap_serial_init();
 198         omap_register_i2c_bus(1, 100, NULL, 0);
 199
 200         /* There is a good chance board is going up, so enable power LED
 201          * (it is connected through invertor) */
 202         omap_writeb(0x00, OMAP_LPG1_LCR);
 203         omap_writeb(0x00, OMAP_LPG1_PMR);       /* Disable clock */
 204 }
 205
 206 static void __init voiceblue_map_io(void)
 207 {
 208         omap1_map_common_io();
 209 }
 210
 211 #define MACHINE_PANICED         1
 212 #define MACHINE_REBOOTING       2
 213 #define MACHINE_REBOOT          4
 214 static unsigned long machine_state;
 215
 216 static int panic_event(struct notifier_block *this, unsigned long event,
 217          void *ptr)
 218 {
 219         if (test_and_set_bit(MACHINE_PANICED, &machine_state))
 220                 return NOTIFY_DONE;
 221
 222         /* Flash power LED */
 223         omap_writeb(0x78, OMAP_LPG1_LCR);
 224         omap_writeb(0x01, OMAP_LPG1_PMR);       /* Enable clock */
 225
 226         return NOTIFY_DONE;
 227 }
 228
 229 static struct notifier_block panic_block = {
 230         .notifier_call  = panic_event,
 231 };
 232
 233 static int __init voiceblue_setup(void)
 234 {
 235         /* Setup panic notifier */
 236         atomic_notifier_chain_register(&panic_notifier_list, &panic_block);
 237
 238         return 0;
 239 }
 240 postcore_initcall(voiceblue_setup);
 241
 242 static int wdt_gpio_state;
 243
 244 void voiceblue_wdt_enable(void)
 245 {
 246         omap_set_gpio_direction(0, 0);
 247         omap_set_gpio_dataout(0, 0);
 248         omap_set_gpio_dataout(0, 1);
 249         omap_set_gpio_dataout(0, 0);
 250         wdt_gpio_state = 0;
 251 }
 252
 253 void voiceblue_wdt_disable(void)
 254 {
 255         omap_set_gpio_dataout(0, 0);
 256         omap_set_gpio_dataout(0, 1);
 257         omap_set_gpio_dataout(0, 0);
 258         omap_set_gpio_direction(0, 1);
 259 }
 260
 261 void voiceblue_wdt_ping(void)
 262 {
 263         if (test_bit(MACHINE_REBOOT, &machine_state))
 264                 return;
 265
 266         wdt_gpio_state = !wdt_gpio_state;
 267         omap_set_gpio_dataout(0, wdt_gpio_state);
 268 }
 269
 270 void voiceblue_reset(void)
 271 {
 272         set_bit(MACHINE_REBOOT, &machine_state);
 273         voiceblue_wdt_enable();
 274         while (1) ;
 275 }
 276
 277 EXPORT_SYMBOL(voiceblue_wdt_enable);
 278 EXPORT_SYMBOL(voiceblue_wdt_disable);
 279 EXPORT_SYMBOL(voiceblue_wdt_ping);
 280
 281 MACHINE_START(VOICEBLUE, "VoiceBlue OMAP5910")
 282         /* Maintainer: Ladislav Michl <michl@2n.cz> */
 283         .phys_io        = 0xfff00000,
 284         .io_pg_offst    = ((0xfef00000) >> 18) & 0xfffc,
 285         .boot_params    = 0x10000100,
 286         .map_io         = voiceblue_map_io,
 287         .init_irq       = voiceblue_init_irq,
 288         .init_machine   = voiceblue_init,
 289         .timer          = &omap_timer,
 290 MACHINE_END