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

   1 /*
   2  * linux/arch/arm/mach-omap/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/flash.h>
  29 #include <asm/mach/map.h>
  30
  31 #include <asm/arch/gpio.h>
  32 #include <asm/arch/tc.h>
  33 #include <asm/arch/mux.h>
  34 #include <asm/arch/usb.h>
  35
  36 #include "../common.h"
  37
  38 extern void omap_init_time(void);
  39 extern int omap_gpio_init(void);
  40
  41 static struct plat_serial8250_port voiceblue_ports[] = {
  42         {
  43                 .mapbase        = (unsigned long)(OMAP_CS1_PHYS + 0x40000),
  44                 .irq            = OMAP_GPIO_IRQ(12),
  45                 .flags          = UPF_BOOT_AUTOCONF | UPF_IOREMAP,
  46                 .iotype         = UPIO_MEM,
  47                 .regshift       = 1,
  48                 .uartclk        = 3686400,
  49         },
  50         {
  51                 .mapbase        = (unsigned long)(OMAP_CS1_PHYS + 0x50000),
  52                 .irq            = OMAP_GPIO_IRQ(13),
  53                 .flags          = UPF_BOOT_AUTOCONF | UPF_IOREMAP,
  54                 .iotype         = UPIO_MEM,
  55                 .regshift       = 1,
  56                 .uartclk        = 3686400,
  57         },
  58         {
  59                 .mapbase        = (unsigned long)(OMAP_CS1_PHYS + 0x60000),
  60                 .irq            = OMAP_GPIO_IRQ(14),
  61                 .flags          = UPF_BOOT_AUTOCONF | UPF_IOREMAP,
  62                 .iotype         = UPIO_MEM,
  63                 .regshift       = 1,
  64                 .uartclk        = 3686400,
  65         },
  66         {
  67                 .mapbase        = (unsigned long)(OMAP_CS1_PHYS + 0x70000),
  68                 .irq            = OMAP_GPIO_IRQ(15),
  69                 .flags          = UPF_BOOT_AUTOCONF | UPF_IOREMAP,
  70                 .iotype         = UPIO_MEM,
  71                 .regshift       = 1,
  72                 .uartclk        = 3686400,
  73         },
  74         { },
  75 };
  76
  77 static struct platform_device serial_device = {
  78         .name                   = "serial8250",
  79         .id                     = 1,
  80         .dev                    = {
  81                 .platform_data  = voiceblue_ports,
  82         },
  83 };
  84
  85 static int __init ext_uart_init(void)
  86 {
  87         return platform_device_register(&serial_device);
  88 }
  89 arch_initcall(ext_uart_init);
  90
  91 static struct flash_platform_data voiceblue_flash_data = {
  92         .map_name       = "cfi_probe",
  93         .width          = 2,
  94 };
  95
  96 static struct resource voiceblue_flash_resource = {
  97         .start  = OMAP_CS0_PHYS,
  98         .end    = OMAP_CS0_PHYS + SZ_32M - 1,
  99         .flags  = IORESOURCE_MEM,
 100 };
 101
 102 static struct platform_device voiceblue_flash_device = {
 103         .name           = "omapflash",
 104         .id             = 0,
 105         .dev            = {
 106                 .platform_data  = &voiceblue_flash_data,
 107         },
 108         .num_resources  = 1,
 109         .resource       = &voiceblue_flash_resource,
 110 };
 111
 112 static struct resource voiceblue_smc91x_resources[] = {
 113         [0] = {
 114                 .start  = OMAP_CS2_PHYS + 0x300,
 115                 .end    = OMAP_CS2_PHYS + 0x300 + 16,
 116                 .flags  = IORESOURCE_MEM,
 117         },
 118         [1] = {
 119                 .start  = OMAP_GPIO_IRQ(8),
 120                 .end    = OMAP_GPIO_IRQ(8),
 121                 .flags  = IORESOURCE_IRQ,
 122         },
 123 };
 124
 125 static struct platform_device voiceblue_smc91x_device = {
 126         .name           = "smc91x",
 127         .id             = 0,
 128         .num_resources  = ARRAY_SIZE(voiceblue_smc91x_resources),
 129         .resource       = voiceblue_smc91x_resources,
 130 };
 131
 132 static struct platform_device *voiceblue_devices[] __initdata = {
 133         &voiceblue_flash_device,
 134         &voiceblue_smc91x_device,
 135 };
 136
 137 static struct omap_usb_config voiceblue_usb_config __initdata = {
 138         .hmc_mode       = 3,
 139         .register_host  = 1,
 140         .register_dev   = 1,
 141         .pins[0]        = 2,
 142         .pins[1]        = 6,
 143         .pins[2]        = 6,
 144 };
 145
 146 static struct omap_mmc_config voiceblue_mmc_config = {
 147         .mmc_blocks             = 1,
 148         .mmc1_power_pin         = 2,
 149         .mmc1_switch_pin        = -1,
 150 };
 151
 152 static struct omap_boot_reason_config voiceblue_boot_reason;
 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_BOOT_REASON, &voiceblue_boot_reason },
 158 };
 159
 160 static void __init voiceblue_init_irq(void)
 161 {
 162         omap_init_irq();
 163         omap_gpio_init();
 164 }
 165
 166 static void __init voiceblue_init(void)
 167 {
 168         /* Watchdog */
 169         omap_request_gpio(0);
 170         /* INIT button */
 171         omap_request_gpio(1);
 172         /* smc91x reset */
 173         omap_request_gpio(7);
 174         omap_set_gpio_direction(7, 0);
 175         omap_set_gpio_dataout(7, 1);
 176         udelay(2);      /* wait at least 100ns */
 177         omap_set_gpio_dataout(7, 0);
 178         mdelay(50);     /* 50ms until PHY ready */
 179         /* smc91x interrupt pin */
 180         omap_request_gpio(8);
 181         /* 16C554 reset*/
 182         omap_request_gpio(6);
 183         omap_set_gpio_direction(6, 0);
 184         omap_set_gpio_dataout(6, 0);
 185         /* 16C554 interrupt pins */
 186         omap_request_gpio(12);
 187         omap_request_gpio(13);
 188         omap_request_gpio(14);
 189         omap_request_gpio(15);
 190         set_irq_type(OMAP_GPIO_IRQ(12), IRQT_RISING);
 191         set_irq_type(OMAP_GPIO_IRQ(13), IRQT_RISING);
 192         set_irq_type(OMAP_GPIO_IRQ(14), IRQT_RISING);
 193         set_irq_type(OMAP_GPIO_IRQ(15), IRQT_RISING);
 194
 195         platform_add_devices(voiceblue_devices, ARRAY_SIZE(voiceblue_devices));
 196         omap_board_config = voiceblue_config;
 197         omap_board_config_size = ARRAY_SIZE(voiceblue_config);
 198
 199         /* There is a good chance board is going up, so enable power LED
 200          * (it is connected through invertor) */
 201         omap_writeb(0x00, OMAP_LPG1_LCR);
 202         omap_writeb(0x00, OMAP_LPG1_PMR);       /* Disable clock */
 203 }
 204
 205 static int __initdata omap_serial_ports[OMAP_MAX_NR_PORTS] = {1, 1, 1};
 206
 207 static void __init voiceblue_map_io(void)
 208 {
 209         omap_map_common_io();
 210         omap_serial_init(omap_serial_ports);
 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         /* This information should come from bootloader. We do it here for
 241          * now... Pushing "init" button (hangs on GPIO1) during power on
 242          * resets device to factory defaults */
 243         omap_set_gpio_direction(1, 1);
 244         sprintf(voiceblue_boot_reason.reason_str, "poweron%s",
 245                 omap_get_gpio_datain(1) ? "" : "-R");
 246
 247         return 0;
 248 }
 249 postcore_initcall(voiceblue_setup);
 250
 251 static int wdt_gpio_state;
 252
 253 void voiceblue_wdt_enable(void)
 254 {
 255         omap_set_gpio_direction(0, 0);
 256         omap_set_gpio_dataout(0, 0);
 257         omap_set_gpio_dataout(0, 1);
 258         omap_set_gpio_dataout(0, 0);
 259         wdt_gpio_state = 0;
 260 }
 261
 262 void voiceblue_wdt_disable(void)
 263 {
 264         omap_set_gpio_dataout(0, 0);
 265         omap_set_gpio_dataout(0, 1);
 266         omap_set_gpio_dataout(0, 0);
 267         omap_set_gpio_direction(0, 1);
 268 }
 269
 270 void voiceblue_wdt_ping(void)
 271 {
 272         if (test_bit(MACHINE_REBOOT, &machine_state))
 273                 return;
 274
 275         wdt_gpio_state = !wdt_gpio_state;
 276         omap_set_gpio_dataout(0, wdt_gpio_state);
 277 }
 278
 279 void voiceblue_reset(void)
 280 {
 281         set_bit(MACHINE_REBOOT, &machine_state);
 282         voiceblue_wdt_enable();
 283         while (1) ;
 284 }
 285
 286 EXPORT_SYMBOL(voiceblue_wdt_enable);
 287 EXPORT_SYMBOL(voiceblue_wdt_disable);
 288 EXPORT_SYMBOL(voiceblue_wdt_ping);
 289
 290 MACHINE_START(VOICEBLUE, "VoiceBlue OMAP5910")
 291         MAINTAINER("Ladislav Michl <michl@2n.cz>")
 292         BOOT_MEM(0x10000000, 0xfff00000, 0xfef00000)
 293         BOOT_PARAMS(0x10000100)
 294         MAPIO(voiceblue_map_io)
 295         INITIRQ(voiceblue_init_irq)
 296         INIT_MACHINE(voiceblue_init)
 297         .timer = &omap_timer,
 298 MACHINE_END