arch/arm/mach-iop32x/n2100.c

   1 /*
   2  * arch/arm/mach-iop32x/n2100.c
   3  *
   4  * Board support code for the Thecus N2100 platform.
   5  *
   6  * Author: Rory Bolt <rorybolt@pacbell.net>
   7  * Copyright (C) 2002 Rory Bolt
   8  * Copyright 2003 (c) MontaVista, Software, Inc.
   9  * Copyright (C) 2004 Intel Corp.
  10  *
  11  * This program is free software; you can redistribute it and/or modify it
  12  * under the terms of the GNU General Public License as published by the
  13  * Free Software Foundation; either version 2 of the License, or (at your
  14  * option) any later version.
  15  */
  16
  17 #include <linux/mm.h>
  18 #include <linux/init.h>
  19 #include <linux/f75375s.h>
  20 #include <linux/leds-pca9532.h>
  21 #include <linux/delay.h>
  22 #include <linux/kernel.h>
  23 #include <linux/pci.h>
  24 #include <linux/pm.h>
  25 #include <linux/string.h>
  26 #include <linux/serial_core.h>
  27 #include <linux/serial_8250.h>
  28 #include <linux/mtd/physmap.h>
  29 #include <linux/i2c.h>
  30 #include <linux/platform_device.h>
  31 #include <linux/reboot.h>
  32 #include <linux/io.h>
  33 #include <mach/hardware.h>
  34 #include <asm/irq.h>
  35 #include <asm/mach/arch.h>
  36 #include <asm/mach/map.h>
  37 #include <asm/mach/pci.h>
  38 #include <asm/mach/time.h>
  39 #include <asm/mach-types.h>
  40 #include <asm/page.h>
  41 #include <asm/pgtable.h>
  42 #include <mach/time.h>
  43
  44 /*
  45  * N2100 timer tick configuration.
  46  */
  47 static void __init n2100_timer_init(void)
  48 {
  49         /* 33.000 MHz crystal.  */
  50         iop_init_time(198000000);
  51 }
  52
  53 static struct sys_timer n2100_timer = {
  54         .init           = n2100_timer_init,
  55 };
  56
  57
  58 /*
  59  * N2100 I/O.
  60  */
  61 static struct map_desc n2100_io_desc[] __initdata = {
  62         {       /* on-board devices */
  63                 .virtual        = N2100_UART,
  64                 .pfn            = __phys_to_pfn(N2100_UART),
  65                 .length         = 0x00100000,
  66                 .type           = MT_DEVICE
  67         },
  68 };
  69
  70 void __init n2100_map_io(void)
  71 {
  72         iop3xx_map_io();
  73         iotable_init(n2100_io_desc, ARRAY_SIZE(n2100_io_desc));
  74 }
  75
  76
  77 /*
  78  * N2100 PCI.
  79  */
  80 static int __init
  81 n2100_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
  82 {
  83         int irq;
  84
  85         if (PCI_SLOT(dev->devfn) == 1) {
  86                 /* RTL8110SB #1 */
  87                 irq = IRQ_IOP32X_XINT0;
  88         } else if (PCI_SLOT(dev->devfn) == 2) {
  89                 /* RTL8110SB #2 */
  90                 irq = IRQ_IOP32X_XINT3;
  91         } else if (PCI_SLOT(dev->devfn) == 3) {
  92                 /* Sil3512 */
  93                 irq = IRQ_IOP32X_XINT2;
  94         } else if (PCI_SLOT(dev->devfn) == 4 && pin == 1) {
  95                 /* VT6212 INTA */
  96                 irq = IRQ_IOP32X_XINT1;
  97         } else if (PCI_SLOT(dev->devfn) == 4 && pin == 2) {
  98                 /* VT6212 INTB */
  99                 irq = IRQ_IOP32X_XINT0;
 100         } else if (PCI_SLOT(dev->devfn) == 4 && pin == 3) {
 101                 /* VT6212 INTC */
 102                 irq = IRQ_IOP32X_XINT2;
 103         } else if (PCI_SLOT(dev->devfn) == 5) {
 104                 /* Mini-PCI slot */
 105                 irq = IRQ_IOP32X_XINT3;
 106         } else {
 107                 printk(KERN_ERR "n2100_pci_map_irq() called for unknown "
 108                         "device PCI:%d:%d:%d\n", dev->bus->number,
 109                         PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
 110                 irq = -1;
 111         }
 112
 113         return irq;
 114 }
 115
 116 static struct hw_pci n2100_pci __initdata = {
 117         .nr_controllers = 1,
 118         .ops            = &iop3xx_ops,
 119         .setup          = iop3xx_pci_setup,
 120         .preinit        = iop3xx_pci_preinit,
 121         .map_irq        = n2100_pci_map_irq,
 122 };
 123
 124 /*
 125  * Both r8169 chips on the n2100 exhibit PCI parity problems.  Set
 126  * the ->broken_parity_status flag for both ports so that the r8169
 127  * driver knows it should ignore error interrupts.
 128  */
 129 static void n2100_fixup_r8169(struct pci_dev *dev)
 130 {
 131         if (dev->bus->number == 0 &&
 132             (dev->devfn == PCI_DEVFN(1, 0) ||
 133              dev->devfn == PCI_DEVFN(2, 0)))
 134                 dev->broken_parity_status = 1;
 135 }
 136 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_REALTEK, PCI_ANY_ID, n2100_fixup_r8169);
 137
 138 static int __init n2100_pci_init(void)
 139 {
 140         if (machine_is_n2100())
 141                 pci_common_init(&n2100_pci);
 142
 143         return 0;
 144 }
 145
 146 subsys_initcall(n2100_pci_init);
 147
 148
 149 /*
 150  * N2100 machine initialisation.
 151  */
 152 static struct physmap_flash_data n2100_flash_data = {
 153         .width          = 2,
 154 };
 155
 156 static struct resource n2100_flash_resource = {
 157         .start          = 0xf0000000,
 158         .end            = 0xf0ffffff,
 159         .flags          = IORESOURCE_MEM,
 160 };
 161
 162 static struct platform_device n2100_flash_device = {
 163         .name           = "physmap-flash",
 164         .id             = 0,
 165         .dev            = {
 166                 .platform_data  = &n2100_flash_data,
 167         },
 168         .num_resources  = 1,
 169         .resource       = &n2100_flash_resource,
 170 };
 171
 172
 173 static struct plat_serial8250_port n2100_serial_port[] = {
 174         {
 175                 .mapbase        = N2100_UART,
 176                 .membase        = (char *)N2100_UART,
 177                 .irq            = 0,
 178                 .flags          = UPF_SKIP_TEST | UPF_AUTO_IRQ | UPF_SHARE_IRQ,
 179                 .iotype         = UPIO_MEM,
 180                 .regshift       = 0,
 181                 .uartclk        = 1843200,
 182         },
 183         { },
 184 };
 185
 186 static struct resource n2100_uart_resource = {
 187         .start          = N2100_UART,
 188         .end            = N2100_UART + 7,
 189         .flags          = IORESOURCE_MEM,
 190 };
 191
 192 static struct platform_device n2100_serial_device = {
 193         .name           = "serial8250",
 194         .id             = PLAT8250_DEV_PLATFORM,
 195         .dev            = {
 196                 .platform_data          = n2100_serial_port,
 197         },
 198         .num_resources  = 1,
 199         .resource       = &n2100_uart_resource,
 200 };
 201
 202 static struct f75375s_platform_data n2100_f75375s = {
 203         .pwm            = { 255, 255 },
 204         .pwm_enable = { 0, 0 },
 205 };
 206
 207 static struct pca9532_platform_data n2100_leds = {
 208         .leds = {
 209         {       .name = "n2100:red:satafail0",
 210                 .state = PCA9532_OFF,
 211                 .type = PCA9532_TYPE_LED,
 212         },
 213         {       .name = "n2100:red:satafail1",
 214                 .state = PCA9532_OFF,
 215                 .type = PCA9532_TYPE_LED,
 216         },
 217         {       .name = "n2100:blue:usb",
 218                 .state = PCA9532_OFF,
 219                 .type = PCA9532_TYPE_LED,
 220         },
 221         {       .type = PCA9532_TYPE_NONE },
 222
 223         {       .type = PCA9532_TYPE_NONE },
 224         {       .type = PCA9532_TYPE_NONE },
 225         {       .type = PCA9532_TYPE_NONE },
 226         {       .name = "n2100:red:usb",
 227                 .state = PCA9532_OFF,
 228                 .type = PCA9532_TYPE_LED,
 229         },
 230
 231         {       .type = PCA9532_TYPE_NONE }, /* power OFF gpio */
 232         {       .type = PCA9532_TYPE_NONE }, /* reset gpio */
 233         {       .type = PCA9532_TYPE_NONE },
 234         {       .type = PCA9532_TYPE_NONE },
 235
 236         {       .type = PCA9532_TYPE_NONE },
 237         {       .name = "n2100:orange:system",
 238                 .state = PCA9532_OFF,
 239                 .type = PCA9532_TYPE_LED,
 240         },
 241         {       .name = "n2100:red:system",
 242                 .state = PCA9532_OFF,
 243                 .type = PCA9532_TYPE_LED,
 244         },
 245         {       .name = "N2100 beeper"  ,
 246                 .state =  PCA9532_OFF,
 247                 .type = PCA9532_TYPE_N2100_BEEP,
 248         },
 249         },
 250         .psc = { 0, 0 },
 251         .pwm = { 0, 0 },
 252 };
 253
 254 static struct i2c_board_info __initdata n2100_i2c_devices[] = {
 255         {
 256                 I2C_BOARD_INFO("rs5c372b", 0x32),
 257         },
 258         {
 259                 I2C_BOARD_INFO("f75375", 0x2e),
 260                 .platform_data = &n2100_f75375s,
 261         },
 262         {
 263                 I2C_BOARD_INFO("pca9532", 0x60),
 264                 .platform_data = &n2100_leds,
 265         },
 266 };
 267
 268 /*
 269  * Pull PCA9532 GPIO #8 low to power off the machine.
 270  */
 271 static void n2100_power_off(void)
 272 {
 273         local_irq_disable();
 274
 275         /* Start condition, I2C address of PCA9532, write transaction.  */
 276         *IOP3XX_IDBR0 = 0xc0;
 277         *IOP3XX_ICR0 = 0xe9;
 278         mdelay(1);
 279
 280         /* Write address 0x08.  */
 281         *IOP3XX_IDBR0 = 0x08;
 282         *IOP3XX_ICR0 = 0xe8;
 283         mdelay(1);
 284
 285         /* Write data 0x01, stop condition.  */
 286         *IOP3XX_IDBR0 = 0x01;
 287         *IOP3XX_ICR0 = 0xea;
 288
 289         while (1)
 290                 ;
 291 }
 292
 293 static void n2100_restart(char mode, const char *cmd)
 294 {
 295         gpio_line_set(N2100_HARDWARE_RESET, GPIO_LOW);
 296         gpio_line_config(N2100_HARDWARE_RESET, GPIO_OUT);
 297         while (1)
 298                 ;
 299 }
 300
 301
 302 static struct timer_list power_button_poll_timer;
 303
 304 static void power_button_poll(unsigned long dummy)
 305 {
 306         if (gpio_line_get(N2100_POWER_BUTTON) == 0) {
 307                 ctrl_alt_del();
 308                 return;
 309         }
 310
 311         power_button_poll_timer.expires = jiffies + (HZ / 10);
 312         add_timer(&power_button_poll_timer);
 313 }
 314
 315
 316 static void __init n2100_init_machine(void)
 317 {
 318         platform_device_register(&iop3xx_i2c0_device);
 319         platform_device_register(&n2100_flash_device);
 320         platform_device_register(&n2100_serial_device);
 321         platform_device_register(&iop3xx_dma_0_channel);
 322         platform_device_register(&iop3xx_dma_1_channel);
 323
 324         i2c_register_board_info(0, n2100_i2c_devices,
 325                 ARRAY_SIZE(n2100_i2c_devices));
 326
 327         pm_power_off = n2100_power_off;
 328
 329         init_timer(&power_button_poll_timer);
 330         power_button_poll_timer.function = power_button_poll;
 331         power_button_poll_timer.expires = jiffies + (HZ / 10);
 332         add_timer(&power_button_poll_timer);
 333 }
 334
 335 MACHINE_START(N2100, "Thecus N2100")
 336         /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
 337         .atag_offset    = 0x100,
 338         .map_io         = n2100_map_io,
 339         .init_irq       = iop32x_init_irq,
 340         .timer          = &n2100_timer,
 341         .init_machine   = n2100_init_machine,
 342         .restart        = n2100_restart,
 343 MACHINE_END