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
  39 #include <mach/hardware.h>
  40 #include <mach/usb.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 #define MACHINE_PANICED         1
 158 #define MACHINE_REBOOTING       2
 159 #define MACHINE_REBOOT          4
 160 static unsigned long machine_state;
 161
 162 static int panic_event(struct notifier_block *this, unsigned long event,
 163          void *ptr)
 164 {
 165         if (test_and_set_bit(MACHINE_PANICED, &machine_state))
 166                 return NOTIFY_DONE;
 167
 168         /* Flash power LED */
 169         omap_writeb(0x78, OMAP_LPG1_LCR);
 170         omap_writeb(0x01, OMAP_LPG1_PMR);       /* Enable clock */
 171
 172         return NOTIFY_DONE;
 173 }
 174
 175 static struct notifier_block panic_block = {
 176         .notifier_call  = panic_event,
 177 };
 178
 179 static int __init voiceblue_setup(void)
 180 {
 181         if (!machine_is_voiceblue())
 182                 return -ENODEV;
 183
 184         /* Setup panic notifier */
 185         atomic_notifier_chain_register(&panic_notifier_list, &panic_block);
 186
 187         return 0;
 188 }
 189 postcore_initcall(voiceblue_setup);
 190
 191 static int wdt_gpio_state;
 192
 193 void voiceblue_wdt_enable(void)
 194 {
 195         gpio_direction_output(0, 0);
 196         gpio_set_value(0, 1);
 197         gpio_set_value(0, 0);
 198         wdt_gpio_state = 0;
 199 }
 200
 201 void voiceblue_wdt_disable(void)
 202 {
 203         gpio_set_value(0, 0);
 204         gpio_set_value(0, 1);
 205         gpio_set_value(0, 0);
 206         gpio_direction_input(0);
 207 }
 208
 209 void voiceblue_wdt_ping(void)
 210 {
 211         if (test_bit(MACHINE_REBOOT, &machine_state))
 212                 return;
 213
 214         wdt_gpio_state = !wdt_gpio_state;
 215         gpio_set_value(0, wdt_gpio_state);
 216 }
 217
 218 static void voiceblue_restart(char mode, const char *cmd)
 219 {
 220         /*
 221          * Workaround for 5912/1611b bug mentioned in sprz209d.pdf p. 28
 222          * "Global Software Reset Affects Traffic Controller Frequency".
 223          */
 224         if (cpu_is_omap5912()) {
 225                 omap_writew(omap_readw(DPLL_CTL) & ~(1 << 4), DPLL_CTL);
 226                 omap_writew(0x8, ARM_RSTCT1);
 227         }
 228
 229         set_bit(MACHINE_REBOOT, &machine_state);
 230         voiceblue_wdt_enable();
 231         while (1) ;
 232 }
 233
 234 EXPORT_SYMBOL(voiceblue_wdt_enable);
 235 EXPORT_SYMBOL(voiceblue_wdt_disable);
 236 EXPORT_SYMBOL(voiceblue_wdt_ping);
 237
 238 static void __init voiceblue_init(void)
 239 {
 240         /* mux pins for uarts */
 241         omap_cfg_reg(UART1_TX);
 242         omap_cfg_reg(UART1_RTS);
 243         omap_cfg_reg(UART2_TX);
 244         omap_cfg_reg(UART2_RTS);
 245         omap_cfg_reg(UART3_TX);
 246         omap_cfg_reg(UART3_RX);
 247
 248         /* Watchdog */
 249         gpio_request(0, "Watchdog");
 250         /* smc91x reset */
 251         gpio_request(7, "SMC91x reset");
 252         gpio_direction_output(7, 1);
 253         udelay(2);      /* wait at least 100ns */
 254         gpio_set_value(7, 0);
 255         mdelay(50);     /* 50ms until PHY ready */
 256         /* smc91x interrupt pin */
 257         gpio_request(8, "SMC91x irq");
 258         /* 16C554 reset*/
 259         gpio_request(6, "16C554 reset");
 260         gpio_direction_output(6, 0);
 261         /* 16C554 interrupt pins */
 262         gpio_request(12, "16C554 irq");
 263         gpio_request(13, "16C554 irq");
 264         gpio_request(14, "16C554 irq");
 265         gpio_request(15, "16C554 irq");
 266         irq_set_irq_type(gpio_to_irq(12), IRQ_TYPE_EDGE_RISING);
 267         irq_set_irq_type(gpio_to_irq(13), IRQ_TYPE_EDGE_RISING);
 268         irq_set_irq_type(gpio_to_irq(14), IRQ_TYPE_EDGE_RISING);
 269         irq_set_irq_type(gpio_to_irq(15), IRQ_TYPE_EDGE_RISING);
 270
 271         voiceblue_smc91x_resources[1].start = gpio_to_irq(8);
 272         voiceblue_smc91x_resources[1].end = gpio_to_irq(8);
 273         platform_add_devices(voiceblue_devices, ARRAY_SIZE(voiceblue_devices));
 274         omap_serial_init();
 275         omap1_usb_init(&voiceblue_usb_config);
 276         omap_register_i2c_bus(1, 100, NULL, 0);
 277
 278         /* There is a good chance board is going up, so enable power LED
 279          * (it is connected through invertor) */
 280         omap_writeb(0x00, OMAP_LPG1_LCR);
 281         omap_writeb(0x00, OMAP_LPG1_PMR);       /* Disable clock */
 282 }
 283
 284 MACHINE_START(VOICEBLUE, "VoiceBlue OMAP5910")
 285         /* Maintainer: Ladislav Michl <michl@2n.cz> */
 286         .atag_offset    = 0x100,
 287         .map_io         = omap15xx_map_io,
 288         .init_early     = omap1_init_early,
 289         .reserve        = omap_reserve,
 290         .init_irq       = omap1_init_irq,
 291         .init_machine   = voiceblue_init,
 292         .init_late      = omap1_init_late,
 293         .timer          = &omap1_timer,
 294         .restart        = voiceblue_restart,
 295 MACHINE_END