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/platform_device.h>
  17 #include <linux/interrupt.h>
  18 #include <linux/irq.h>
  19 #include <linux/init.h>
  20 #include <linux/kernel.h>
  21 #include <linux/mtd/physmap.h>
  22 #include <linux/notifier.h>
  23 #include <linux/reboot.h>
  24 #include <linux/serial_8250.h>
  25 #include <linux/serial_reg.h>
  26 #include <linux/smc91x.h>
  27
  28 #include <mach/hardware.h>
  29 #include <mach/system.h>
  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/common.h>
  36 #include <mach/gpio.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 static void __init voiceblue_init_irq(void)
 163 {
 164         omap1_init_common_hw();
 165         omap1_init_irq();
 166 }
 167
 168 static void __init voiceblue_map_io(void)
 169 {
 170         omap1_map_common_io();
 171 }
 172
 173 #define MACHINE_PANICED         1
 174 #define MACHINE_REBOOTING       2
 175 #define MACHINE_REBOOT          4
 176 static unsigned long machine_state;
 177
 178 static int panic_event(struct notifier_block *this, unsigned long event,
 179          void *ptr)
 180 {
 181         if (test_and_set_bit(MACHINE_PANICED, &machine_state))
 182                 return NOTIFY_DONE;
 183
 184         /* Flash power LED */
 185         omap_writeb(0x78, OMAP_LPG1_LCR);
 186         omap_writeb(0x01, OMAP_LPG1_PMR);       /* Enable clock */
 187
 188         return NOTIFY_DONE;
 189 }
 190
 191 static struct notifier_block panic_block = {
 192         .notifier_call  = panic_event,
 193 };
 194
 195 static int __init voiceblue_setup(void)
 196 {
 197         if (!machine_is_voiceblue())
 198                 return -ENODEV;
 199
 200         /* Setup panic notifier */
 201         atomic_notifier_chain_register(&panic_notifier_list, &panic_block);
 202
 203         return 0;
 204 }
 205 postcore_initcall(voiceblue_setup);
 206
 207 static int wdt_gpio_state;
 208
 209 void voiceblue_wdt_enable(void)
 210 {
 211         gpio_direction_output(0, 0);
 212         gpio_set_value(0, 1);
 213         gpio_set_value(0, 0);
 214         wdt_gpio_state = 0;
 215 }
 216
 217 void voiceblue_wdt_disable(void)
 218 {
 219         gpio_set_value(0, 0);
 220         gpio_set_value(0, 1);
 221         gpio_set_value(0, 0);
 222         gpio_direction_input(0);
 223 }
 224
 225 void voiceblue_wdt_ping(void)
 226 {
 227         if (test_bit(MACHINE_REBOOT, &machine_state))
 228                 return;
 229
 230         wdt_gpio_state = !wdt_gpio_state;
 231         gpio_set_value(0, wdt_gpio_state);
 232 }
 233
 234 static void voiceblue_reset(char mode, const char *cmd)
 235 {
 236         /*
 237          * Workaround for 5912/1611b bug mentioned in sprz209d.pdf p. 28
 238          * "Global Software Reset Affects Traffic Controller Frequency".
 239          */
 240         if (cpu_is_omap5912()) {
 241                 omap_writew(omap_readw(DPLL_CTL) & ~(1 << 4), DPLL_CTL);
 242                 omap_writew(0x8, ARM_RSTCT1);
 243         }
 244
 245         set_bit(MACHINE_REBOOT, &machine_state);
 246         voiceblue_wdt_enable();
 247         while (1) ;
 248 }
 249
 250 EXPORT_SYMBOL(voiceblue_wdt_enable);
 251 EXPORT_SYMBOL(voiceblue_wdt_disable);
 252 EXPORT_SYMBOL(voiceblue_wdt_ping);
 253
 254 static void __init voiceblue_init(void)
 255 {
 256         /* mux pins for uarts */
 257         omap_cfg_reg(UART1_TX);
 258         omap_cfg_reg(UART1_RTS);
 259         omap_cfg_reg(UART2_TX);
 260         omap_cfg_reg(UART2_RTS);
 261         omap_cfg_reg(UART3_TX);
 262         omap_cfg_reg(UART3_RX);
 263
 264         /* Watchdog */
 265         gpio_request(0, "Watchdog");
 266         /* smc91x reset */
 267         gpio_request(7, "SMC91x reset");
 268         gpio_direction_output(7, 1);
 269         udelay(2);      /* wait at least 100ns */
 270         gpio_set_value(7, 0);
 271         mdelay(50);     /* 50ms until PHY ready */
 272         /* smc91x interrupt pin */
 273         gpio_request(8, "SMC91x irq");
 274         /* 16C554 reset*/
 275         gpio_request(6, "16C554 reset");
 276         gpio_direction_output(6, 0);
 277         /* 16C554 interrupt pins */
 278         gpio_request(12, "16C554 irq");
 279         gpio_request(13, "16C554 irq");
 280         gpio_request(14, "16C554 irq");
 281         gpio_request(15, "16C554 irq");
 282         irq_set_irq_type(gpio_to_irq(12), IRQ_TYPE_EDGE_RISING);
 283         irq_set_irq_type(gpio_to_irq(13), IRQ_TYPE_EDGE_RISING);
 284         irq_set_irq_type(gpio_to_irq(14), IRQ_TYPE_EDGE_RISING);
 285         irq_set_irq_type(gpio_to_irq(15), IRQ_TYPE_EDGE_RISING);
 286
 287         platform_add_devices(voiceblue_devices, ARRAY_SIZE(voiceblue_devices));
 288         omap_board_config = voiceblue_config;
 289         omap_board_config_size = ARRAY_SIZE(voiceblue_config);
 290         omap_serial_init();
 291         omap1_usb_init(&voiceblue_usb_config);
 292         omap_register_i2c_bus(1, 100, NULL, 0);
 293
 294         /* There is a good chance board is going up, so enable power LED
 295          * (it is connected through invertor) */
 296         omap_writeb(0x00, OMAP_LPG1_LCR);
 297         omap_writeb(0x00, OMAP_LPG1_PMR);       /* Disable clock */
 298
 299         arch_reset = voiceblue_reset;
 300 }
 301
 302 MACHINE_START(VOICEBLUE, "VoiceBlue OMAP5910")
 303         /* Maintainer: Ladislav Michl <michl@2n.cz> */
 304         .boot_params    = 0x10000100,
 305         .map_io         = voiceblue_map_io,
 306         .reserve        = omap_reserve,
 307         .init_irq       = voiceblue_init_irq,
 308         .init_machine   = voiceblue_init,
 309         .timer          = &omap1_timer,
 310 MACHINE_END