Pileus Git - ~andy/linux/blob - 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/gpio.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/interrupt.h>
  19 #include <linux/irq.h>
  20 #include <linux/init.h>
  21 #include <linux/kernel.h>
  22 #include <linux/mtd/physmap.h>
  23 #include <linux/notifier.h>
  24 #include <linux/reboot.h>
  25 #include <linux/serial_8250.h>
  26 #include <linux/serial_reg.h>
  27 #include <linux/smc91x.h>
  28 #include <linux/export.h>
  29
  30 #include <asm/mach-types.h>
  31 #include <asm/mach/arch.h>
  32 #include <asm/mach/map.h>
  33
  34 #include <plat/board-voiceblue.h>
  35 #include <plat/flash.h>
  36 #include <plat/mux.h>
  37 #include <plat/tc.h>
  38 #include <plat/usb.h>
  39
  40 #include <mach/hardware.h>
  41
  42 #include "common.h"
  43
  44 static struct plat_serial8250_port voiceblue_ports[] = {
  45         {
  46                 .mapbase        = (unsigned long)(OMAP_CS1_PHYS + 0x40000),
  47                 .irq            = OMAP_GPIO_IRQ(12),
  48                 .flags          = UPF_BOOT_AUTOCONF | UPF_IOREMAP,
  49                 .iotype         = UPIO_MEM,
  50                 .regshift       = 1,
  51                 .uartclk        = 3686400,
  52         },
  53         {
  54                 .mapbase        = (unsigned long)(OMAP_CS1_PHYS + 0x50000),
  55                 .irq            = OMAP_GPIO_IRQ(13),
  56                 .flags          = UPF_BOOT_AUTOCONF | UPF_IOREMAP,
  57                 .iotype         = UPIO_MEM,
  58                 .regshift       = 1,
  59                 .uartclk        = 3686400,
  60         },
  61         {
  62                 .mapbase        = (unsigned long)(OMAP_CS1_PHYS + 0x60000),
  63                 .irq            = OMAP_GPIO_IRQ(14),
  64                 .flags          = UPF_BOOT_AUTOCONF | UPF_IOREMAP,
  65                 .iotype         = UPIO_MEM,
  66                 .regshift       = 1,
  67                 .uartclk        = 3686400,
  68         },
  69         {
  70                 .mapbase        = (unsigned long)(OMAP_CS1_PHYS + 0x70000),
  71                 .irq            = OMAP_GPIO_IRQ(15),
  72                 .flags          = UPF_BOOT_AUTOCONF | UPF_IOREMAP,
  73                 .iotype         = UPIO_MEM,
  74                 .regshift       = 1,
  75                 .uartclk        = 3686400,
  76         },
  77         { },
  78 };
  79
  80 static struct platform_device serial_device = {
  81         .name                   = "serial8250",
  82         .id                     = PLAT8250_DEV_PLATFORM1,
  83         .dev                    = {
  84                 .platform_data  = voiceblue_ports,
  85         },
  86 };
  87
  88 static int __init ext_uart_init(void)
  89 {
  90         if (!machine_is_voiceblue())
  91                 return -ENODEV;
  92
  93         return platform_device_register(&serial_device);
  94 }
  95 arch_initcall(ext_uart_init);
  96
  97 static struct physmap_flash_data voiceblue_flash_data = {
  98         .width          = 2,
  99         .set_vpp        = omap1_set_vpp,
 100 };
 101
 102 static struct resource voiceblue_flash_resource = {
 103         .start  = OMAP_CS0_PHYS,
 104         .end    = OMAP_CS0_PHYS + SZ_32M - 1,
 105         .flags  = IORESOURCE_MEM,
 106 };
 107
 108 static struct platform_device voiceblue_flash_device = {
 109         .name           = "physmap-flash",
 110         .id             = 0,
 111         .dev            = {
 112                 .platform_data  = &voiceblue_flash_data,
 113         },
 114         .num_resources  = 1,
 115         .resource       = &voiceblue_flash_resource,
 116 };
 117
 118 static struct smc91x_platdata voiceblue_smc91x_info = {
 119         .flags  = SMC91X_USE_16BIT | SMC91X_NOWAIT,
 120         .leda   = RPC_LED_100_10,
 121         .ledb   = RPC_LED_TX_RX,
 122 };
 123
 124 static struct resource voiceblue_smc91x_resources[] = {
 125         [0] = {
 126                 .start  = OMAP_CS2_PHYS + 0x300,
 127                 .end    = OMAP_CS2_PHYS + 0x300 + 16,
 128                 .flags  = IORESOURCE_MEM,
 129         },
 130         [1] = {
 131                 .start  = OMAP_GPIO_IRQ(8),
 132                 .end    = OMAP_GPIO_IRQ(8),
 133                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
 134         },
 135 };
 136
 137 static struct platform_device voiceblue_smc91x_device = {
 138         .name           = "smc91x",
 139         .id             = 0,
 140         .dev    = {
 141                 .platform_data  = &voiceblue_smc91x_info,
 142         },
 143         .num_resources  = ARRAY_SIZE(voiceblue_smc91x_resources),
 144         .resource       = voiceblue_smc91x_resources,
 145 };
 146
 147 static struct platform_device *voiceblue_devices[] __initdata = {
 148         &voiceblue_flash_device,
 149         &voiceblue_smc91x_device,
 150 };
 151
 152 static struct omap_usb_config voiceblue_usb_config __initdata = {
 153         .hmc_mode       = 3,
 154         .register_host  = 1,
 155         .register_dev   = 1,
 156         .pins[0]        = 2,
 157         .pins[1]        = 6,
 158         .pins[2]        = 6,
 159 };
 160
 161 static struct omap_board_config_kernel voiceblue_config[] = {
 162 };
 163
 164 #define MACHINE_PANICED         1
 165 #define MACHINE_REBOOTING       2
 166 #define MACHINE_REBOOT          4
 167 static unsigned long machine_state;
 168
 169 static int panic_event(struct notifier_block *this, unsigned long event,
 170          void *ptr)
 171 {
 172         if (test_and_set_bit(MACHINE_PANICED, &machine_state))
 173                 return NOTIFY_DONE;
 174
 175         /* Flash power LED */
 176         omap_writeb(0x78, OMAP_LPG1_LCR);
 177         omap_writeb(0x01, OMAP_LPG1_PMR);       /* Enable clock */
 178
 179         return NOTIFY_DONE;
 180 }
 181
 182 static struct notifier_block panic_block = {
 183         .notifier_call  = panic_event,
 184 };
 185
 186 static int __init voiceblue_setup(void)
 187 {
 188         if (!machine_is_voiceblue())
 189                 return -ENODEV;
 190
 191         /* Setup panic notifier */
 192         atomic_notifier_chain_register(&panic_notifier_list, &panic_block);
 193
 194         return 0;
 195 }
 196 postcore_initcall(voiceblue_setup);
 197
 198 static int wdt_gpio_state;
 199
 200 void voiceblue_wdt_enable(void)
 201 {
 202         gpio_direction_output(0, 0);
 203         gpio_set_value(0, 1);
 204         gpio_set_value(0, 0);
 205         wdt_gpio_state = 0;
 206 }
 207
 208 void voiceblue_wdt_disable(void)
 209 {
 210         gpio_set_value(0, 0);
 211         gpio_set_value(0, 1);
 212         gpio_set_value(0, 0);
 213         gpio_direction_input(0);
 214 }
 215
 216 void voiceblue_wdt_ping(void)
 217 {
 218         if (test_bit(MACHINE_REBOOT, &machine_state))
 219                 return;
 220
 221         wdt_gpio_state = !wdt_gpio_state;
 222         gpio_set_value(0, wdt_gpio_state);
 223 }
 224
 225 static void voiceblue_restart(char mode, const char *cmd)
 226 {
 227         /*
 228          * Workaround for 5912/1611b bug mentioned in sprz209d.pdf p. 28
 229          * "Global Software Reset Affects Traffic Controller Frequency".
 230          */
 231         if (cpu_is_omap5912()) {
 232                 omap_writew(omap_readw(DPLL_CTL) & ~(1 << 4), DPLL_CTL);
 233                 omap_writew(0x8, ARM_RSTCT1);
 234         }
 235
 236         set_bit(MACHINE_REBOOT, &machine_state);
 237         voiceblue_wdt_enable();
 238         while (1) ;
 239 }
 240
 241 EXPORT_SYMBOL(voiceblue_wdt_enable);
 242 EXPORT_SYMBOL(voiceblue_wdt_disable);
 243 EXPORT_SYMBOL(voiceblue_wdt_ping);
 244
 245 static void __init voiceblue_init(void)
 246 {
 247         /* mux pins for uarts */
 248         omap_cfg_reg(UART1_TX);
 249         omap_cfg_reg(UART1_RTS);
 250         omap_cfg_reg(UART2_TX);
 251         omap_cfg_reg(UART2_RTS);
 252         omap_cfg_reg(UART3_TX);
 253         omap_cfg_reg(UART3_RX);
 254
 255         /* Watchdog */
 256         gpio_request(0, "Watchdog");
 257         /* smc91x reset */
 258         gpio_request(7, "SMC91x reset");
 259         gpio_direction_output(7, 1);
 260         udelay(2);      /* wait at least 100ns */
 261         gpio_set_value(7, 0);
 262         mdelay(50);     /* 50ms until PHY ready */
 263         /* smc91x interrupt pin */
 264         gpio_request(8, "SMC91x irq");
 265         /* 16C554 reset*/
 266         gpio_request(6, "16C554 reset");
 267         gpio_direction_output(6, 0);
 268         /* 16C554 interrupt pins */
 269         gpio_request(12, "16C554 irq");
 270         gpio_request(13, "16C554 irq");
 271         gpio_request(14, "16C554 irq");
 272         gpio_request(15, "16C554 irq");
 273         irq_set_irq_type(gpio_to_irq(12), IRQ_TYPE_EDGE_RISING);
 274         irq_set_irq_type(gpio_to_irq(13), IRQ_TYPE_EDGE_RISING);
 275         irq_set_irq_type(gpio_to_irq(14), IRQ_TYPE_EDGE_RISING);
 276         irq_set_irq_type(gpio_to_irq(15), IRQ_TYPE_EDGE_RISING);
 277
 278         platform_add_devices(voiceblue_devices, ARRAY_SIZE(voiceblue_devices));
 279         omap_board_config = voiceblue_config;
 280         omap_board_config_size = ARRAY_SIZE(voiceblue_config);
 281         omap_serial_init();
 282         omap1_usb_init(&voiceblue_usb_config);
 283         omap_register_i2c_bus(1, 100, NULL, 0);
 284
 285         /* There is a good chance board is going up, so enable power LED
 286          * (it is connected through invertor) */
 287         omap_writeb(0x00, OMAP_LPG1_LCR);
 288         omap_writeb(0x00, OMAP_LPG1_PMR);       /* Disable clock */
 289 }
 290
 291 MACHINE_START(VOICEBLUE, "VoiceBlue OMAP5910")
 292         /* Maintainer: Ladislav Michl <michl@2n.cz> */
 293         .atag_offset    = 0x100,
 294         .map_io         = omap15xx_map_io,
 295         .init_early     = omap1_init_early,
 296         .reserve        = omap_reserve,
 297         .init_irq       = omap1_init_irq,
 298         .init_machine   = voiceblue_init,
 299         .timer          = &omap1_timer,
 300         .restart        = voiceblue_restart,
 301 MACHINE_END