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