kernel/2.6.29.6-aldebaran-rt/arch/arm/mach-orion5x/dns323-setup.c

   1 /*
   2  * arch/arm/mach-orion5x/dns323-setup.c
   3  *
   4  * Copyright (C) 2007 Herbert Valerio Riedel <hvr@gnu.org>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU Lesser General Public License as
   8  * published by the Free Software Foundation; either version 2 of the
   9  * License, or (at your option) any later version.
  10  *
  11  */
  12
  13 #include <linux/kernel.h>
  14 #include <linux/init.h>
  15 #include <linux/platform_device.h>
  16 #include <linux/pci.h>
  17 #include <linux/irq.h>
  18 #include <linux/mtd/physmap.h>
  19 #include <linux/mv643xx_eth.h>
  20 #include <linux/leds.h>
  21 #include <linux/gpio_keys.h>
  22 #include <linux/input.h>
  23 #include <linux/i2c.h>
  24 #include <linux/ata_platform.h>
  25 #include <asm/mach-types.h>
  26 #include <asm/gpio.h>
  27 #include <asm/mach/arch.h>
  28 #include <asm/mach/pci.h>
  29 #include <mach/orion5x.h>
  30 #include "common.h"
  31 #include "mpp.h"
  32
  33 #define DNS323_GPIO_LED_RIGHT_AMBER     1
  34 #define DNS323_GPIO_LED_LEFT_AMBER      2
  35 #define DNS323_GPIO_LED_POWER           5
  36 #define DNS323_GPIO_OVERTEMP            6
  37 #define DNS323_GPIO_RTC                 7
  38 #define DNS323_GPIO_POWER_OFF           8
  39 #define DNS323_GPIO_KEY_POWER           9
  40 #define DNS323_GPIO_KEY_RESET           10
  41
  42 /****************************************************************************
  43  * PCI setup
  44  */
  45
  46 static int __init dns323_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
  47 {
  48         int irq;
  49
  50         /*
  51          * Check for devices with hard-wired IRQs.
  52          */
  53         irq = orion5x_pci_map_irq(dev, slot, pin);
  54         if (irq != -1)
  55                 return irq;
  56
  57         return -1;
  58 }
  59
  60 static struct hw_pci dns323_pci __initdata = {
  61         .nr_controllers = 2,
  62         .swizzle        = pci_std_swizzle,
  63         .setup          = orion5x_pci_sys_setup,
  64         .scan           = orion5x_pci_sys_scan_bus,
  65         .map_irq        = dns323_pci_map_irq,
  66 };
  67
  68 static int __init dns323_dev_id(void)
  69 {
  70         u32 dev, rev;
  71
  72         orion5x_pcie_id(&dev, &rev);
  73
  74         return dev;
  75 }
  76
  77 static int __init dns323_pci_init(void)
  78 {
  79         /* The 5182 doesn't really use it's PCI bus, and initialising PCI
  80          * gets in the way of initialising the SATA controller.
  81          */
  82         if (machine_is_dns323() && dns323_dev_id() != MV88F5182_DEV_ID)
  83                 pci_common_init(&dns323_pci);
  84
  85         return 0;
  86 }
  87
  88 subsys_initcall(dns323_pci_init);
  89
  90 /****************************************************************************
  91  * 8MiB NOR flash (Spansion S29GL064M90TFIR4)
  92  *
  93  * Layout as used by D-Link:
  94  *  0x00000000-0x00010000 : "MTD1"
  95  *  0x00010000-0x00020000 : "MTD2"
  96  *  0x00020000-0x001a0000 : "Linux Kernel"
  97  *  0x001a0000-0x007d0000 : "File System"
  98  *  0x007d0000-0x00800000 : "u-boot"
  99  */
 100
 101 #define DNS323_NOR_BOOT_BASE 0xf4000000
 102 #define DNS323_NOR_BOOT_SIZE SZ_8M
 103
 104 static struct mtd_partition dns323_partitions[] = {
 105         {
 106                 .name   = "MTD1",
 107                 .size   = 0x00010000,
 108                 .offset = 0,
 109         }, {
 110                 .name   = "MTD2",
 111                 .size   = 0x00010000,
 112                 .offset = 0x00010000,
 113         }, {
 114                 .name   = "Linux Kernel",
 115                 .size   = 0x00180000,
 116                 .offset = 0x00020000,
 117         }, {
 118                 .name   = "File System",
 119                 .size   = 0x00630000,
 120                 .offset = 0x001A0000,
 121         }, {
 122                 .name   = "u-boot",
 123                 .size   = 0x00030000,
 124                 .offset = 0x007d0000,
 125         },
 126 };
 127
 128 static struct physmap_flash_data dns323_nor_flash_data = {
 129         .width          = 1,
 130         .parts          = dns323_partitions,
 131         .nr_parts       = ARRAY_SIZE(dns323_partitions)
 132 };
 133
 134 static struct resource dns323_nor_flash_resource = {
 135         .flags          = IORESOURCE_MEM,
 136         .start          = DNS323_NOR_BOOT_BASE,
 137         .end            = DNS323_NOR_BOOT_BASE + DNS323_NOR_BOOT_SIZE - 1,
 138 };
 139
 140 static struct platform_device dns323_nor_flash = {
 141         .name           = "physmap-flash",
 142         .id             = 0,
 143         .dev            = {
 144                 .platform_data  = &dns323_nor_flash_data,
 145         },
 146         .resource       = &dns323_nor_flash_resource,
 147         .num_resources  = 1,
 148 };
 149
 150 /****************************************************************************
 151  * Ethernet
 152  */
 153
 154 static struct mv643xx_eth_platform_data dns323_eth_data = {
 155         .phy_addr = MV643XX_ETH_PHY_ADDR(8),
 156 };
 157
 158 /* dns323_parse_hex_*() taken from tsx09-common.c; should a common copy of these
 159  * functions be kept somewhere?
 160  */
 161 static int __init dns323_parse_hex_nibble(char n)
 162 {
 163         if (n >= '0' && n <= '9')
 164                 return n - '0';
 165
 166         if (n >= 'A' && n <= 'F')
 167                 return n - 'A' + 10;
 168
 169         if (n >= 'a' && n <= 'f')
 170                 return n - 'a' + 10;
 171
 172         return -1;
 173 }
 174
 175 static int __init dns323_parse_hex_byte(const char *b)
 176 {
 177         int hi;
 178         int lo;
 179
 180         hi = dns323_parse_hex_nibble(b[0]);
 181         lo = dns323_parse_hex_nibble(b[1]);
 182
 183         if (hi < 0 || lo < 0)
 184                 return -1;
 185
 186         return (hi << 4) | lo;
 187 }
 188
 189 static int __init dns323_read_mac_addr(void)
 190 {
 191         u_int8_t addr[6];
 192         int i;
 193         char *mac_page;
 194
 195         /* MAC address is stored as a regular ol' string in /dev/mtdblock4
 196          * (0x007d0000-0x00800000) starting at offset 196480 (0x2ff80).
 197          */
 198         mac_page = ioremap(DNS323_NOR_BOOT_BASE + 0x7d0000 + 196480, 1024);
 199         if (!mac_page)
 200                 return -ENOMEM;
 201
 202         /* Sanity check the string we're looking at */
 203         for (i = 0; i < 5; i++) {
 204                 if (*(mac_page + (i * 3) + 2) != ':') {
 205                         goto error_fail;
 206                 }
 207         }
 208
 209         for (i = 0; i < 6; i++) {
 210                 int byte;
 211
 212                 byte = dns323_parse_hex_byte(mac_page + (i * 3));
 213                 if (byte < 0) {
 214                         goto error_fail;
 215                 }
 216
 217                 addr[i] = byte;
 218         }
 219
 220         iounmap(mac_page);
 221         printk("DNS323: Found ethernet MAC address: ");
 222         for (i = 0; i < 6; i++)
 223                 printk("%.2x%s", addr[i], (i < 5) ? ":" : ".\n");
 224
 225         memcpy(dns323_eth_data.mac_addr, addr, 6);
 226
 227         return 0;
 228
 229 error_fail:
 230         iounmap(mac_page);
 231         return -EINVAL;
 232 }
 233
 234 /****************************************************************************
 235  * GPIO LEDs (simple - doesn't use hardware blinking support)
 236  */
 237
 238 static struct gpio_led dns323_leds[] = {
 239         {
 240                 .name = "power:blue",
 241                 .gpio = DNS323_GPIO_LED_POWER,
 242                 .active_low = 1,
 243         }, {
 244                 .name = "right:amber",
 245                 .gpio = DNS323_GPIO_LED_RIGHT_AMBER,
 246                 .active_low = 1,
 247         }, {
 248                 .name = "left:amber",
 249                 .gpio = DNS323_GPIO_LED_LEFT_AMBER,
 250                 .active_low = 1,
 251         },
 252 };
 253
 254 static struct gpio_led_platform_data dns323_led_data = {
 255         .num_leds       = ARRAY_SIZE(dns323_leds),
 256         .leds           = dns323_leds,
 257 };
 258
 259 static struct platform_device dns323_gpio_leds = {
 260         .name           = "leds-gpio",
 261         .id             = -1,
 262         .dev            = {
 263                 .platform_data  = &dns323_led_data,
 264         },
 265 };
 266
 267 /****************************************************************************
 268  * GPIO Attached Keys
 269  */
 270
 271 static struct gpio_keys_button dns323_buttons[] = {
 272         {
 273                 .code           = KEY_RESTART,
 274                 .gpio           = DNS323_GPIO_KEY_RESET,
 275                 .desc           = "Reset Button",
 276                 .active_low     = 1,
 277         }, {
 278                 .code           = KEY_POWER,
 279                 .gpio           = DNS323_GPIO_KEY_POWER,
 280                 .desc           = "Power Button",
 281                 .active_low     = 1,
 282         },
 283 };
 284
 285 static struct gpio_keys_platform_data dns323_button_data = {
 286         .buttons        = dns323_buttons,
 287         .nbuttons       = ARRAY_SIZE(dns323_buttons),
 288 };
 289
 290 static struct platform_device dns323_button_device = {
 291         .name           = "gpio-keys",
 292         .id             = -1,
 293         .num_resources  = 0,
 294         .dev            = {
 295                 .platform_data  = &dns323_button_data,
 296         },
 297 };
 298
 299 /*****************************************************************************
 300  * SATA
 301  */
 302 static struct mv_sata_platform_data dns323_sata_data = {
 303        .n_ports        = 2,
 304 };
 305
 306 /****************************************************************************
 307  * General Setup
 308  */
 309 static struct orion5x_mpp_mode dns323_mv88f5181_mpp_modes[] __initdata = {
 310         {  0, MPP_PCIE_RST_OUTn },
 311         {  1, MPP_GPIO },               /* right amber LED (sata ch0) */
 312         {  2, MPP_GPIO },               /* left amber LED (sata ch1) */
 313         {  3, MPP_UNUSED },
 314         {  4, MPP_GPIO },               /* power button LED */
 315         {  5, MPP_GPIO },               /* power button LED */
 316         {  6, MPP_GPIO },               /* GMT G751-2f overtemp */
 317         {  7, MPP_GPIO },               /* M41T80 nIRQ/OUT/SQW */
 318         {  8, MPP_GPIO },               /* triggers power off */
 319         {  9, MPP_GPIO },               /* power button switch */
 320         { 10, MPP_GPIO },               /* reset button switch */
 321         { 11, MPP_UNUSED },
 322         { 12, MPP_UNUSED },
 323         { 13, MPP_UNUSED },
 324         { 14, MPP_UNUSED },
 325         { 15, MPP_UNUSED },
 326         { 16, MPP_UNUSED },
 327         { 17, MPP_UNUSED },
 328         { 18, MPP_UNUSED },
 329         { 19, MPP_UNUSED },
 330         { -1 },
 331 };
 332
 333 static struct orion5x_mpp_mode dns323_mv88f5182_mpp_modes[] __initdata = {
 334         {  0, MPP_UNUSED },
 335         {  1, MPP_GPIO },               /* right amber LED (sata ch0) */
 336         {  2, MPP_GPIO },               /* left amber LED (sata ch1) */
 337         {  3, MPP_UNUSED },
 338         {  4, MPP_GPIO },               /* power button LED */
 339         {  5, MPP_GPIO },               /* power button LED */
 340         {  6, MPP_GPIO },               /* GMT G751-2f overtemp */
 341         {  7, MPP_GPIO },               /* M41T80 nIRQ/OUT/SQW */
 342         {  8, MPP_GPIO },               /* triggers power off */
 343         {  9, MPP_GPIO },               /* power button switch */
 344         { 10, MPP_GPIO },               /* reset button switch */
 345         { 11, MPP_UNUSED },
 346         { 12, MPP_SATA_LED },
 347         { 13, MPP_SATA_LED },
 348         { 14, MPP_SATA_LED },
 349         { 15, MPP_SATA_LED },
 350         { 16, MPP_UNUSED },
 351         { 17, MPP_UNUSED },
 352         { 18, MPP_UNUSED },
 353         { 19, MPP_UNUSED },
 354         { -1 },
 355 };
 356
 357 /*
 358  * On the DNS-323 the following devices are attached via I2C:
 359  *
 360  *  i2c addr | chip        | description
 361  *  0x3e     | GMT G760Af  | fan speed PWM controller
 362  *  0x48     | GMT G751-2f | temp. sensor and therm. watchdog (LM75 compatible)
 363  *  0x68     | ST M41T80   | RTC w/ alarm
 364  */
 365 static struct i2c_board_info __initdata dns323_i2c_devices[] = {
 366         {
 367                 I2C_BOARD_INFO("g760a", 0x3e),
 368         }, {
 369                 I2C_BOARD_INFO("lm75", 0x48),
 370         }, {
 371                 I2C_BOARD_INFO("m41t80", 0x68),
 372         },
 373 };
 374
 375 /* DNS-323 specific power off method */
 376 static void dns323_power_off(void)
 377 {
 378         pr_info("%s: triggering power-off...\n", __func__);
 379         gpio_set_value(DNS323_GPIO_POWER_OFF, 1);
 380 }
 381
 382 static void __init dns323_init(void)
 383 {
 384         /* Setup basic Orion functions. Need to be called early. */
 385         orion5x_init();
 386
 387         /* Just to be tricky, the 5182 has a completely different
 388          * set of MPP modes to the 5181.
 389          */
 390         if (dns323_dev_id() == MV88F5182_DEV_ID)
 391                 orion5x_mpp_conf(dns323_mv88f5182_mpp_modes);
 392         else {
 393                 orion5x_mpp_conf(dns323_mv88f5181_mpp_modes);
 394                 writel(0, MPP_DEV_CTRL);                /* DEV_D[31:16] */
 395         }
 396
 397         /* setup flash mapping
 398          * CS3 holds a 8 MB Spansion S29GL064M90TFIR4
 399          */
 400         orion5x_setup_dev_boot_win(DNS323_NOR_BOOT_BASE, DNS323_NOR_BOOT_SIZE);
 401         platform_device_register(&dns323_nor_flash);
 402
 403         platform_device_register(&dns323_gpio_leds);
 404
 405         platform_device_register(&dns323_button_device);
 406
 407         i2c_register_board_info(0, dns323_i2c_devices,
 408                                 ARRAY_SIZE(dns323_i2c_devices));
 409
 410         /*
 411          * Configure peripherals.
 412          */
 413         if (dns323_read_mac_addr() < 0)
 414                 printk("DNS323: Failed to read MAC address\n");
 415
 416         orion5x_ehci0_init();
 417         orion5x_eth_init(&dns323_eth_data);
 418         orion5x_i2c_init();
 419         orion5x_uart0_init();
 420
 421         /* The 5182 has it's SATA controller on-chip, and needs it's own little
 422          * init routine.
 423          */
 424         if (dns323_dev_id() == MV88F5182_DEV_ID)
 425                 orion5x_sata_init(&dns323_sata_data);
 426
 427         /* register dns323 specific power-off method */
 428         if (gpio_request(DNS323_GPIO_POWER_OFF, "POWEROFF") != 0 ||
 429             gpio_direction_output(DNS323_GPIO_POWER_OFF, 0) != 0)
 430                 pr_err("DNS323: failed to setup power-off GPIO\n");
 431         pm_power_off = dns323_power_off;
 432 }
 433
 434 /* Warning: D-Link uses a wrong mach-type (=526) in their bootloader */
 435 MACHINE_START(DNS323, "D-Link DNS-323")
 436         /* Maintainer: Herbert Valerio Riedel <hvr@gnu.org> */
 437         .phys_io        = ORION5X_REGS_PHYS_BASE,
 438         .io_pg_offst    = ((ORION5X_REGS_VIRT_BASE) >> 18) & 0xFFFC,
 439         .boot_params    = 0x00000100,
 440         .init_machine   = dns323_init,
 441         .map_io         = orion5x_map_io,
 442         .init_irq       = orion5x_init_irq,
 443         .timer          = &orion5x_timer,
 444         .fixup          = tag_fixup_mem32,
 445 MACHINE_END