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 static void __init voiceblue_init_irq(void)
 164 {
 165         omap1_init_common_hw();
 166         omap1_init_irq();
 167 }
 168
 169 static void __init voiceblue_map_io(void)
 170 {
 171         omap1_map_common_io();
 172 }
 173
 174 #define MACHINE_PANICED         1
 175 #define MACHINE_REBOOTING       2
 176 #define MACHINE_REBOOT          4
 177 static unsigned long machine_state;
 178
 179 static int panic_event(struct notifier_block *this, unsigned long event,
 180          void *ptr)
 181 {
 182         if (test_and_set_bit(MACHINE_PANICED, &machine_state))
 183                 return NOTIFY_DONE;
 184
 185         /* Flash power LED */
 186         omap_writeb(0x78, OMAP_LPG1_LCR);
 187         omap_writeb(0x01, OMAP_LPG1_PMR);       /* Enable clock */
 188
 189         return NOTIFY_DONE;
 190 }
 191
 192 static struct notifier_block panic_block = {
 193         .notifier_call  = panic_event,
 194 };
 195
 196 static int __init voiceblue_setup(void)
 197 {
 198         if (!machine_is_voiceblue())
 199                 return -ENODEV;
 200
 201         /* Setup panic notifier */
 202         atomic_notifier_chain_register(&panic_notifier_list, &panic_block);
 203
 204         return 0;
 205 }
 206 postcore_initcall(voiceblue_setup);
 207
 208 static int wdt_gpio_state;
 209
 210 void voiceblue_wdt_enable(void)
 211 {
 212         gpio_direction_output(0, 0);
 213         gpio_set_value(0, 1);
 214         gpio_set_value(0, 0);
 215         wdt_gpio_state = 0;
 216 }
 217
 218 void voiceblue_wdt_disable(void)
 219 {
 220         gpio_set_value(0, 0);
 221         gpio_set_value(0, 1);
 222         gpio_set_value(0, 0);
 223         gpio_direction_input(0);
 224 }
 225
 226 void voiceblue_wdt_ping(void)
 227 {
 228         if (test_bit(MACHINE_REBOOT, &machine_state))
 229                 return;
 230
 231         wdt_gpio_state = !wdt_gpio_state;
 232         gpio_set_value(0, wdt_gpio_state);
 233 }
 234
 235 static void voiceblue_reset(char mode, const char *cmd)
 236 {
 237         /*
 238          * Workaround for 5912/1611b bug mentioned in sprz209d.pdf p. 28
 239          * "Global Software Reset Affects Traffic Controller Frequency".
 240          */
 241         if (cpu_is_omap5912()) {
 242                 omap_writew(omap_readw(DPLL_CTL) & ~(1 << 4), DPLL_CTL);
 243                 omap_writew(0x8, ARM_RSTCT1);
 244         }
 245
 246         set_bit(MACHINE_REBOOT, &machine_state);
 247         voiceblue_wdt_enable();
 248         while (1) ;
 249 }
 250
 251 EXPORT_SYMBOL(voiceblue_wdt_enable);
 252 EXPORT_SYMBOL(voiceblue_wdt_disable);
 253 EXPORT_SYMBOL(voiceblue_wdt_ping);
 254
 255 static void __init voiceblue_init(void)
 256 {
 257         /* mux pins for uarts */
 258         omap_cfg_reg(UART1_TX);
 259         omap_cfg_reg(UART1_RTS);
 260         omap_cfg_reg(UART2_TX);
 261         omap_cfg_reg(UART2_RTS);
 262         omap_cfg_reg(UART3_TX);
 263         omap_cfg_reg(UART3_RX);
 264
 265         /* Watchdog */
 266         gpio_request(0, "Watchdog");
 267         /* smc91x reset */
 268         gpio_request(7, "SMC91x reset");
 269         gpio_direction_output(7, 1);
 270         udelay(2);      /* wait at least 100ns */
 271         gpio_set_value(7, 0);
 272         mdelay(50);     /* 50ms until PHY ready */
 273         /* smc91x interrupt pin */
 274         gpio_request(8, "SMC91x irq");
 275         /* 16C554 reset*/
 276         gpio_request(6, "16C554 reset");
 277         gpio_direction_output(6, 0);
 278         /* 16C554 interrupt pins */
 279         gpio_request(12, "16C554 irq");
 280         gpio_request(13, "16C554 irq");
 281         gpio_request(14, "16C554 irq");
 282         gpio_request(15, "16C554 irq");
 283         irq_set_irq_type(gpio_to_irq(12), IRQ_TYPE_EDGE_RISING);
 284         irq_set_irq_type(gpio_to_irq(13), IRQ_TYPE_EDGE_RISING);
 285         irq_set_irq_type(gpio_to_irq(14), IRQ_TYPE_EDGE_RISING);
 286         irq_set_irq_type(gpio_to_irq(15), IRQ_TYPE_EDGE_RISING);
 287
 288         platform_add_devices(voiceblue_devices, ARRAY_SIZE(voiceblue_devices));
 289         omap_board_config = voiceblue_config;
 290         omap_board_config_size = ARRAY_SIZE(voiceblue_config);
 291         omap_serial_init();
 292         omap1_usb_init(&voiceblue_usb_config);
 293         omap_register_i2c_bus(1, 100, NULL, 0);
 294
 295         /* There is a good chance board is going up, so enable power LED
 296          * (it is connected through invertor) */
 297         omap_writeb(0x00, OMAP_LPG1_LCR);
 298         omap_writeb(0x00, OMAP_LPG1_PMR);       /* Disable clock */
 299
 300         arch_reset = voiceblue_reset;
 301 }
 302
 303 MACHINE_START(VOICEBLUE, "VoiceBlue OMAP5910")
 304         /* Maintainer: Ladislav Michl <michl@2n.cz> */
 305         .atag_offset    = 0x100,
 306         .map_io         = voiceblue_map_io,
 307         .reserve        = omap_reserve,
 308         .init_irq       = voiceblue_init_irq,
 309         .init_machine   = voiceblue_init,
 310         .timer          = &omap1_timer,
 311 MACHINE_END