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         if (!machine_is_voiceblue())
  87                 return -ENODEV;
  88
  89         return platform_device_register(&serial_device);
  90 }
  91 arch_initcall(ext_uart_init);
  92
  93 static struct physmap_flash_data voiceblue_flash_data = {
  94         .width          = 2,
  95         .set_vpp        = omap1_set_vpp,
  96 };
  97
  98 static struct resource voiceblue_flash_resource = {
  99         .start  = OMAP_CS0_PHYS,
 100         .end    = OMAP_CS0_PHYS + SZ_32M - 1,
 101         .flags  = IORESOURCE_MEM,
 102 };
 103
 104 static struct platform_device voiceblue_flash_device = {
 105         .name           = "physmap-flash",
 106         .id             = 0,
 107         .dev            = {
 108                 .platform_data  = &voiceblue_flash_data,
 109         },
 110         .num_resources  = 1,
 111         .resource       = &voiceblue_flash_resource,
 112 };
 113
 114 static struct smc91x_platdata voiceblue_smc91x_info = {
 115         .flags  = SMC91X_USE_16BIT | SMC91X_NOWAIT,
 116         .leda   = RPC_LED_100_10,
 117         .ledb   = RPC_LED_TX_RX,
 118 };
 119
 120 static struct resource voiceblue_smc91x_resources[] = {
 121         [0] = {
 122                 .start  = OMAP_CS2_PHYS + 0x300,
 123                 .end    = OMAP_CS2_PHYS + 0x300 + 16,
 124                 .flags  = IORESOURCE_MEM,
 125         },
 126         [1] = {
 127                 .start  = OMAP_GPIO_IRQ(8),
 128                 .end    = OMAP_GPIO_IRQ(8),
 129                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
 130         },
 131 };
 132
 133 static struct platform_device voiceblue_smc91x_device = {
 134         .name           = "smc91x",
 135         .id             = 0,
 136         .dev    = {
 137                 .platform_data  = &voiceblue_smc91x_info,
 138         },
 139         .num_resources  = ARRAY_SIZE(voiceblue_smc91x_resources),
 140         .resource       = voiceblue_smc91x_resources,
 141 };
 142
 143 static struct platform_device *voiceblue_devices[] __initdata = {
 144         &voiceblue_flash_device,
 145         &voiceblue_smc91x_device,
 146 };
 147
 148 static struct omap_usb_config voiceblue_usb_config __initdata = {
 149         .hmc_mode       = 3,
 150         .register_host  = 1,
 151         .register_dev   = 1,
 152         .pins[0]        = 2,
 153         .pins[1]        = 6,
 154         .pins[2]        = 6,
 155 };
 156
 157 static struct omap_board_config_kernel voiceblue_config[] = {
 158 };
 159
 160 static void __init voiceblue_init_irq(void)
 161 {
 162         omap1_init_common_hw();
 163         omap_init_irq();
 164 }
 165
 166 static void __init voiceblue_init(void)
 167 {
 168         /* mux pins for uarts */
 169         omap_cfg_reg(UART1_TX);
 170         omap_cfg_reg(UART1_RTS);
 171         omap_cfg_reg(UART2_TX);
 172         omap_cfg_reg(UART2_RTS);
 173         omap_cfg_reg(UART3_TX);
 174         omap_cfg_reg(UART3_RX);
 175
 176         /* Watchdog */
 177         gpio_request(0, "Watchdog");
 178         /* smc91x reset */
 179         gpio_request(7, "SMC91x reset");
 180         gpio_direction_output(7, 1);
 181         udelay(2);      /* wait at least 100ns */
 182         gpio_set_value(7, 0);
 183         mdelay(50);     /* 50ms until PHY ready */
 184         /* smc91x interrupt pin */
 185         gpio_request(8, "SMC91x irq");
 186         /* 16C554 reset*/
 187         gpio_request(6, "16C554 reset");
 188         gpio_direction_output(6, 0);
 189         /* 16C554 interrupt pins */
 190         gpio_request(12, "16C554 irq");
 191         gpio_request(13, "16C554 irq");
 192         gpio_request(14, "16C554 irq");
 193         gpio_request(15, "16C554 irq");
 194         set_irq_type(gpio_to_irq(12), IRQ_TYPE_EDGE_RISING);
 195         set_irq_type(gpio_to_irq(13), IRQ_TYPE_EDGE_RISING);
 196         set_irq_type(gpio_to_irq(14), IRQ_TYPE_EDGE_RISING);
 197         set_irq_type(gpio_to_irq(15), IRQ_TYPE_EDGE_RISING);
 198
 199         platform_add_devices(voiceblue_devices, ARRAY_SIZE(voiceblue_devices));
 200         omap_board_config = voiceblue_config;
 201         omap_board_config_size = ARRAY_SIZE(voiceblue_config);
 202         omap_serial_init();
 203         omap1_usb_init(&voiceblue_usb_config);
 204         omap_register_i2c_bus(1, 100, NULL, 0);
 205
 206         /* There is a good chance board is going up, so enable power LED
 207          * (it is connected through invertor) */
 208         omap_writeb(0x00, OMAP_LPG1_LCR);
 209         omap_writeb(0x00, OMAP_LPG1_PMR);       /* Disable clock */
 210 }
 211
 212 static void __init voiceblue_map_io(void)
 213 {
 214         omap1_map_common_io();
 215 }
 216
 217 #define MACHINE_PANICED         1
 218 #define MACHINE_REBOOTING       2
 219 #define MACHINE_REBOOT          4
 220 static unsigned long machine_state;
 221
 222 static int panic_event(struct notifier_block *this, unsigned long event,
 223          void *ptr)
 224 {
 225         if (test_and_set_bit(MACHINE_PANICED, &machine_state))
 226                 return NOTIFY_DONE;
 227
 228         /* Flash power LED */
 229         omap_writeb(0x78, OMAP_LPG1_LCR);
 230         omap_writeb(0x01, OMAP_LPG1_PMR);       /* Enable clock */
 231
 232         return NOTIFY_DONE;
 233 }
 234
 235 static struct notifier_block panic_block = {
 236         .notifier_call  = panic_event,
 237 };
 238
 239 static int __init voiceblue_setup(void)
 240 {
 241         if (!machine_is_voiceblue())
 242                 return -ENODEV;
 243
 244         /* Setup panic notifier */
 245         atomic_notifier_chain_register(&panic_notifier_list, &panic_block);
 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         gpio_direction_output(0, 0);
 256         gpio_set_value(0, 1);
 257         gpio_set_value(0, 0);
 258         wdt_gpio_state = 0;
 259 }
 260
 261 void voiceblue_wdt_disable(void)
 262 {
 263         gpio_set_value(0, 0);
 264         gpio_set_value(0, 1);
 265         gpio_set_value(0, 0);
 266         gpio_direction_input(0);
 267 }
 268
 269 void voiceblue_wdt_ping(void)
 270 {
 271         if (test_bit(MACHINE_REBOOT, &machine_state))
 272                 return;
 273
 274         wdt_gpio_state = !wdt_gpio_state;
 275         gpio_set_value(0, wdt_gpio_state);
 276 }
 277
 278 void voiceblue_reset(void)
 279 {
 280         set_bit(MACHINE_REBOOT, &machine_state);
 281         voiceblue_wdt_enable();
 282         while (1) ;
 283 }
 284
 285 EXPORT_SYMBOL(voiceblue_wdt_enable);
 286 EXPORT_SYMBOL(voiceblue_wdt_disable);
 287 EXPORT_SYMBOL(voiceblue_wdt_ping);
 288
 289 MACHINE_START(VOICEBLUE, "VoiceBlue OMAP5910")
 290         /* Maintainer: Ladislav Michl <michl@2n.cz> */
 291         .boot_params    = 0x10000100,
 292         .map_io         = voiceblue_map_io,
 293         .reserve        = omap_reserve,
 294         .init_irq       = voiceblue_init_irq,
 295         .init_machine   = voiceblue_init,
 296         .timer          = &omap_timer,
 297 MACHINE_END