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