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