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                 .flags          = UPF_BOOT_AUTOCONF | UPF_IOREMAP,
  48                 .iotype         = UPIO_MEM,
  49                 .regshift       = 1,
  50                 .uartclk        = 3686400,
  51         },
  52         {
  53                 .mapbase        = (unsigned long)(OMAP_CS1_PHYS + 0x50000),
  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                 .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                 .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 };
  80
  81 static int __init ext_uart_init(void)
  82 {
  83         if (!machine_is_voiceblue())
  84                 return -ENODEV;
  85
  86         voiceblue_ports[0].irq = gpio_to_irq(12);
  87         voiceblue_ports[1].irq = gpio_to_irq(13);
  88         voiceblue_ports[2].irq = gpio_to_irq(14);
  89         voiceblue_ports[3].irq = gpio_to_irq(15);
  90         serial_device.dev.platform_data = voiceblue_ports;
  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                 .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 #define MACHINE_PANICED         1
 161 #define MACHINE_REBOOTING       2
 162 #define MACHINE_REBOOT          4
 163 static unsigned long machine_state;
 164
 165 static int panic_event(struct notifier_block *this, unsigned long event,
 166          void *ptr)
 167 {
 168         if (test_and_set_bit(MACHINE_PANICED, &machine_state))
 169                 return NOTIFY_DONE;
 170
 171         /* Flash power LED */
 172         omap_writeb(0x78, OMAP_LPG1_LCR);
 173         omap_writeb(0x01, OMAP_LPG1_PMR);       /* Enable clock */
 174
 175         return NOTIFY_DONE;
 176 }
 177
 178 static struct notifier_block panic_block = {
 179         .notifier_call  = panic_event,
 180 };
 181
 182 static int __init voiceblue_setup(void)
 183 {
 184         if (!machine_is_voiceblue())
 185                 return -ENODEV;
 186
 187         /* Setup panic notifier */
 188         atomic_notifier_chain_register(&panic_notifier_list, &panic_block);
 189
 190         return 0;
 191 }
 192 postcore_initcall(voiceblue_setup);
 193
 194 static int wdt_gpio_state;
 195
 196 void voiceblue_wdt_enable(void)
 197 {
 198         gpio_direction_output(0, 0);
 199         gpio_set_value(0, 1);
 200         gpio_set_value(0, 0);
 201         wdt_gpio_state = 0;
 202 }
 203
 204 void voiceblue_wdt_disable(void)
 205 {
 206         gpio_set_value(0, 0);
 207         gpio_set_value(0, 1);
 208         gpio_set_value(0, 0);
 209         gpio_direction_input(0);
 210 }
 211
 212 void voiceblue_wdt_ping(void)
 213 {
 214         if (test_bit(MACHINE_REBOOT, &machine_state))
 215                 return;
 216
 217         wdt_gpio_state = !wdt_gpio_state;
 218         gpio_set_value(0, wdt_gpio_state);
 219 }
 220
 221 static void voiceblue_restart(char mode, const char *cmd)
 222 {
 223         /*
 224          * Workaround for 5912/1611b bug mentioned in sprz209d.pdf p. 28
 225          * "Global Software Reset Affects Traffic Controller Frequency".
 226          */
 227         if (cpu_is_omap5912()) {
 228                 omap_writew(omap_readw(DPLL_CTL) & ~(1 << 4), DPLL_CTL);
 229                 omap_writew(0x8, ARM_RSTCT1);
 230         }
 231
 232         set_bit(MACHINE_REBOOT, &machine_state);
 233         voiceblue_wdt_enable();
 234         while (1) ;
 235 }
 236
 237 EXPORT_SYMBOL(voiceblue_wdt_enable);
 238 EXPORT_SYMBOL(voiceblue_wdt_disable);
 239 EXPORT_SYMBOL(voiceblue_wdt_ping);
 240
 241 static void __init voiceblue_init(void)
 242 {
 243         /* mux pins for uarts */
 244         omap_cfg_reg(UART1_TX);
 245         omap_cfg_reg(UART1_RTS);
 246         omap_cfg_reg(UART2_TX);
 247         omap_cfg_reg(UART2_RTS);
 248         omap_cfg_reg(UART3_TX);
 249         omap_cfg_reg(UART3_RX);
 250
 251         /* Watchdog */
 252         gpio_request(0, "Watchdog");
 253         /* smc91x reset */
 254         gpio_request(7, "SMC91x reset");
 255         gpio_direction_output(7, 1);
 256         udelay(2);      /* wait at least 100ns */
 257         gpio_set_value(7, 0);
 258         mdelay(50);     /* 50ms until PHY ready */
 259         /* smc91x interrupt pin */
 260         gpio_request(8, "SMC91x irq");
 261         /* 16C554 reset*/
 262         gpio_request(6, "16C554 reset");
 263         gpio_direction_output(6, 0);
 264         /* 16C554 interrupt pins */
 265         gpio_request(12, "16C554 irq");
 266         gpio_request(13, "16C554 irq");
 267         gpio_request(14, "16C554 irq");
 268         gpio_request(15, "16C554 irq");
 269         irq_set_irq_type(gpio_to_irq(12), IRQ_TYPE_EDGE_RISING);
 270         irq_set_irq_type(gpio_to_irq(13), IRQ_TYPE_EDGE_RISING);
 271         irq_set_irq_type(gpio_to_irq(14), IRQ_TYPE_EDGE_RISING);
 272         irq_set_irq_type(gpio_to_irq(15), IRQ_TYPE_EDGE_RISING);
 273
 274         voiceblue_smc91x_resources[1].start = gpio_to_irq(8);
 275         voiceblue_smc91x_resources[1].end = gpio_to_irq(8);
 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         .init_late      = omap1_init_late,
 298         .timer          = &omap1_timer,
 299         .restart        = voiceblue_restart,
 300 MACHINE_END