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/delay.h>
  16 #include <linux/platform_device.h>
  17 #include <linux/pci.h>
  18 #include <linux/irq.h>
  19 #include <linux/mtd/physmap.h>
  20 #include <linux/mv643xx_eth.h>
  21 #include <linux/leds.h>
  22 #include <linux/gpio_keys.h>
  23 #include <linux/input.h>
  24 #include <linux/i2c.h>
  25 #include <linux/ata_platform.h>
  26 #include <asm/mach-types.h>
  27 #include <asm/gpio.h>
  28 #include <asm/mach/arch.h>
  29 #include <asm/mach/pci.h>
  30 #include <mach/orion5x.h>
  31 #include "common.h"
  32 #include "mpp.h"
  33
  34 #define DNS323_GPIO_LED_RIGHT_AMBER     1
  35 #define DNS323_GPIO_LED_LEFT_AMBER      2
  36 #define DNS323_GPIO_SYSTEM_UP           3
  37 #define DNS323_GPIO_LED_POWER           5
  38 #define DNS323_GPIO_OVERTEMP            6
  39 #define DNS323_GPIO_RTC                 7
  40 #define DNS323_GPIO_POWER_OFF           8
  41 #define DNS323_GPIO_KEY_POWER           9
  42 #define DNS323_GPIO_KEY_RESET           10
  43
  44 /****************************************************************************
  45  * PCI setup
  46  */
  47
  48 static int __init dns323_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
  49 {
  50         int irq;
  51
  52         /*
  53          * Check for devices with hard-wired IRQs.
  54          */
  55         irq = orion5x_pci_map_irq(dev, slot, pin);
  56         if (irq != -1)
  57                 return irq;
  58
  59         return -1;
  60 }
  61
  62 static struct hw_pci dns323_pci __initdata = {
  63         .nr_controllers = 2,
  64         .swizzle        = pci_std_swizzle,
  65         .setup          = orion5x_pci_sys_setup,
  66         .scan           = orion5x_pci_sys_scan_bus,
  67         .map_irq        = dns323_pci_map_irq,
  68 };
  69
  70 static int __init dns323_dev_id(void)
  71 {
  72         u32 dev, rev;
  73
  74         orion5x_pcie_id(&dev, &rev);
  75
  76         return dev;
  77 }
  78
  79 static int __init dns323_pci_init(void)
  80 {
  81         /* The 5182 doesn't really use its PCI bus, and initialising PCI
  82          * gets in the way of initialising the SATA controller.
  83          */
  84         if (machine_is_dns323() && dns323_dev_id() != MV88F5182_DEV_ID)
  85                 pci_common_init(&dns323_pci);
  86
  87         return 0;
  88 }
  89
  90 subsys_initcall(dns323_pci_init);
  91
  92 /****************************************************************************
  93  * 8MiB NOR flash (Spansion S29GL064M90TFIR4)
  94  *
  95  * Layout as used by D-Link:
  96  *  0x00000000-0x00010000 : "MTD1"
  97  *  0x00010000-0x00020000 : "MTD2"
  98  *  0x00020000-0x001a0000 : "Linux Kernel"
  99  *  0x001a0000-0x007d0000 : "File System"
 100  *  0x007d0000-0x00800000 : "u-boot"
 101  */
 102
 103 #define DNS323_NOR_BOOT_BASE 0xf4000000
 104 #define DNS323_NOR_BOOT_SIZE SZ_8M
 105
 106 static struct mtd_partition dns323_partitions[] = {
 107         {
 108                 .name   = "MTD1",
 109                 .size   = 0x00010000,
 110                 .offset = 0,
 111         }, {
 112                 .name   = "MTD2",
 113                 .size   = 0x00010000,
 114                 .offset = 0x00010000,
 115         }, {
 116                 .name   = "Linux Kernel",
 117                 .size   = 0x00180000,
 118                 .offset = 0x00020000,
 119         }, {
 120                 .name   = "File System",
 121                 .size   = 0x00630000,
 122                 .offset = 0x001A0000,
 123         }, {
 124                 .name   = "u-boot",
 125                 .size   = 0x00030000,
 126                 .offset = 0x007d0000,
 127         },
 128 };
 129
 130 static struct physmap_flash_data dns323_nor_flash_data = {
 131         .width          = 1,
 132         .parts          = dns323_partitions,
 133         .nr_parts       = ARRAY_SIZE(dns323_partitions)
 134 };
 135
 136 static struct resource dns323_nor_flash_resource = {
 137         .flags          = IORESOURCE_MEM,
 138         .start          = DNS323_NOR_BOOT_BASE,
 139         .end            = DNS323_NOR_BOOT_BASE + DNS323_NOR_BOOT_SIZE - 1,
 140 };
 141
 142 static struct platform_device dns323_nor_flash = {
 143         .name           = "physmap-flash",
 144         .id             = 0,
 145         .dev            = {
 146                 .platform_data  = &dns323_nor_flash_data,
 147         },
 148         .resource       = &dns323_nor_flash_resource,
 149         .num_resources  = 1,
 150 };
 151
 152 /****************************************************************************
 153  * Ethernet
 154  */
 155
 156 static struct mv643xx_eth_platform_data dns323_eth_data = {
 157         .phy_addr = MV643XX_ETH_PHY_ADDR(8),
 158 };
 159
 160 /* dns323_parse_hex_*() taken from tsx09-common.c; should a common copy of these
 161  * functions be kept somewhere?
 162  */
 163 static int __init dns323_parse_hex_nibble(char n)
 164 {
 165         if (n >= '0' && n <= '9')
 166                 return n - '0';
 167
 168         if (n >= 'A' && n <= 'F')
 169                 return n - 'A' + 10;
 170
 171         if (n >= 'a' && n <= 'f')
 172                 return n - 'a' + 10;
 173
 174         return -1;
 175 }
 176
 177 static int __init dns323_parse_hex_byte(const char *b)
 178 {
 179         int hi;
 180         int lo;
 181
 182         hi = dns323_parse_hex_nibble(b[0]);
 183         lo = dns323_parse_hex_nibble(b[1]);
 184
 185         if (hi < 0 || lo < 0)
 186                 return -1;
 187
 188         return (hi << 4) | lo;
 189 }
 190
 191 static int __init dns323_read_mac_addr(void)
 192 {
 193         u_int8_t addr[6];
 194         int i;
 195         char *mac_page;
 196
 197         /* MAC address is stored as a regular ol' string in /dev/mtdblock4
 198          * (0x007d0000-0x00800000) starting at offset 196480 (0x2ff80).
 199          */
 200         mac_page = ioremap(DNS323_NOR_BOOT_BASE + 0x7d0000 + 196480, 1024);
 201         if (!mac_page)
 202                 return -ENOMEM;
 203
 204         /* Sanity check the string we're looking at */
 205         for (i = 0; i < 5; i++) {
 206                 if (*(mac_page + (i * 3) + 2) != ':') {
 207                         goto error_fail;
 208                 }
 209         }
 210
 211         for (i = 0; i < 6; i++) {
 212                 int byte;
 213
 214                 byte = dns323_parse_hex_byte(mac_page + (i * 3));
 215                 if (byte < 0) {
 216                         goto error_fail;
 217                 }
 218
 219                 addr[i] = byte;
 220         }
 221
 222         iounmap(mac_page);
 223         printk("DNS323: Found ethernet MAC address: ");
 224         for (i = 0; i < 6; i++)
 225                 printk("%.2x%s", addr[i], (i < 5) ? ":" : ".\n");
 226
 227         memcpy(dns323_eth_data.mac_addr, addr, 6);
 228
 229         return 0;
 230
 231 error_fail:
 232         iounmap(mac_page);
 233         return -EINVAL;
 234 }
 235
 236 /****************************************************************************
 237  * GPIO LEDs (simple - doesn't use hardware blinking support)
 238  */
 239
 240 static struct gpio_led dns323_leds[] = {
 241         {
 242                 .name = "power:blue",
 243                 .gpio = DNS323_GPIO_LED_POWER,
 244                 .default_state = LEDS_GPIO_DEFSTATE_ON,
 245         }, {
 246                 .name = "right:amber",
 247                 .gpio = DNS323_GPIO_LED_RIGHT_AMBER,
 248                 .active_low = 1,
 249         }, {
 250                 .name = "left:amber",
 251                 .gpio = DNS323_GPIO_LED_LEFT_AMBER,
 252                 .active_low = 1,
 253         },
 254 };
 255
 256 static struct gpio_led_platform_data dns323_led_data = {
 257         .num_leds       = ARRAY_SIZE(dns323_leds),
 258         .leds           = dns323_leds,
 259 };
 260
 261 static struct platform_device dns323_gpio_leds = {
 262         .name           = "leds-gpio",
 263         .id             = -1,
 264         .dev            = {
 265                 .platform_data  = &dns323_led_data,
 266         },
 267 };
 268
 269 /****************************************************************************
 270  * GPIO Attached Keys
 271  */
 272
 273 static struct gpio_keys_button dns323_buttons[] = {
 274         {
 275                 .code           = KEY_RESTART,
 276                 .gpio           = DNS323_GPIO_KEY_RESET,
 277                 .desc           = "Reset Button",
 278                 .active_low     = 1,
 279         }, {
 280                 .code           = KEY_POWER,
 281                 .gpio           = DNS323_GPIO_KEY_POWER,
 282                 .desc           = "Power Button",
 283                 .active_low     = 1,
 284         },
 285 };
 286
 287 static struct gpio_keys_platform_data dns323_button_data = {
 288         .buttons        = dns323_buttons,
 289         .nbuttons       = ARRAY_SIZE(dns323_buttons),
 290 };
 291
 292 static struct platform_device dns323_button_device = {
 293         .name           = "gpio-keys",
 294         .id             = -1,
 295         .num_resources  = 0,
 296         .dev            = {
 297                 .platform_data  = &dns323_button_data,
 298         },
 299 };
 300
 301 /*****************************************************************************
 302  * SATA
 303  */
 304 static struct mv_sata_platform_data dns323_sata_data = {
 305        .n_ports        = 2,
 306 };
 307
 308 /****************************************************************************
 309  * General Setup
 310  */
 311 static struct orion5x_mpp_mode dns323_mv88f5181_mpp_modes[] __initdata = {
 312         {  0, MPP_PCIE_RST_OUTn },
 313         {  1, MPP_GPIO },               /* right amber LED (sata ch0) */
 314         {  2, MPP_GPIO },               /* left amber LED (sata ch1) */
 315         {  3, MPP_UNUSED },
 316         {  4, MPP_GPIO },               /* power button LED */
 317         {  5, MPP_GPIO },               /* power button LED */
 318         {  6, MPP_GPIO },               /* GMT G751-2f overtemp */
 319         {  7, MPP_GPIO },               /* M41T80 nIRQ/OUT/SQW */
 320         {  8, MPP_GPIO },               /* triggers power off */
 321         {  9, MPP_GPIO },               /* power button switch */
 322         { 10, MPP_GPIO },               /* reset button switch */
 323         { 11, MPP_UNUSED },
 324         { 12, MPP_UNUSED },
 325         { 13, MPP_UNUSED },
 326         { 14, MPP_UNUSED },
 327         { 15, MPP_UNUSED },
 328         { 16, MPP_UNUSED },
 329         { 17, MPP_UNUSED },
 330         { 18, MPP_UNUSED },
 331         { 19, MPP_UNUSED },
 332         { -1 },
 333 };
 334
 335 static struct orion5x_mpp_mode dns323_mv88f5182_mpp_modes[] __initdata = {
 336         {  0, MPP_UNUSED },
 337         {  1, MPP_GPIO },               /* right amber LED (sata ch0) */
 338         {  2, MPP_GPIO },               /* left amber LED (sata ch1) */
 339         {  3, MPP_GPIO },               /* system up flag */
 340         {  4, MPP_GPIO },               /* power button LED */
 341         {  5, MPP_GPIO },               /* power button LED */
 342         {  6, MPP_GPIO },               /* GMT G751-2f overtemp */
 343         {  7, MPP_GPIO },               /* M41T80 nIRQ/OUT/SQW */
 344         {  8, MPP_GPIO },               /* triggers power off */
 345         {  9, MPP_GPIO },               /* power button switch */
 346         { 10, MPP_GPIO },               /* reset button switch */
 347         { 11, MPP_UNUSED },
 348         { 12, MPP_SATA_LED },
 349         { 13, MPP_SATA_LED },
 350         { 14, MPP_SATA_LED },
 351         { 15, MPP_SATA_LED },
 352         { 16, MPP_UNUSED },
 353         { 17, MPP_UNUSED },
 354         { 18, MPP_UNUSED },
 355         { 19, MPP_UNUSED },
 356         { -1 },
 357 };
 358
 359 /*
 360  * On the DNS-323 the following devices are attached via I2C:
 361  *
 362  *  i2c addr | chip        | description
 363  *  0x3e     | GMT G760Af  | fan speed PWM controller
 364  *  0x48     | GMT G751-2f | temp. sensor and therm. watchdog (LM75 compatible)
 365  *  0x68     | ST M41T80   | RTC w/ alarm
 366  */
 367 static struct i2c_board_info __initdata dns323_i2c_devices[] = {
 368         {
 369                 I2C_BOARD_INFO("g760a", 0x3e),
 370         }, {
 371                 I2C_BOARD_INFO("lm75", 0x48),
 372         }, {
 373                 I2C_BOARD_INFO("m41t80", 0x68),
 374         },
 375 };
 376
 377 /* DNS-323 rev. A specific power off method */
 378 static void dns323a_power_off(void)
 379 {
 380         pr_info("%s: triggering power-off...\n", __func__);
 381         gpio_set_value(DNS323_GPIO_POWER_OFF, 1);
 382 }
 383
 384 /* DNS-323 rev B specific power off method */
 385 static void dns323b_power_off(void)
 386 {
 387         pr_info("%s: triggering power-off...\n", __func__);
 388         /* Pin has to be changed to 1 and back to 0 to do actual power off. */
 389         gpio_set_value(DNS323_GPIO_POWER_OFF, 1);
 390         mdelay(100);
 391         gpio_set_value(DNS323_GPIO_POWER_OFF, 0);
 392 }
 393
 394 static void __init dns323_init(void)
 395 {
 396         /* Setup basic Orion functions. Need to be called early. */
 397         orion5x_init();
 398
 399         /* Just to be tricky, the 5182 has a completely different
 400          * set of MPP modes to the 5181.
 401          */
 402         if (dns323_dev_id() == MV88F5182_DEV_ID)
 403                 orion5x_mpp_conf(dns323_mv88f5182_mpp_modes);
 404         else {
 405                 orion5x_mpp_conf(dns323_mv88f5181_mpp_modes);
 406                 writel(0, MPP_DEV_CTRL);                /* DEV_D[31:16] */
 407         }
 408
 409         /* setup flash mapping
 410          * CS3 holds a 8 MB Spansion S29GL064M90TFIR4
 411          */
 412         orion5x_setup_dev_boot_win(DNS323_NOR_BOOT_BASE, DNS323_NOR_BOOT_SIZE);
 413         platform_device_register(&dns323_nor_flash);
 414
 415         platform_device_register(&dns323_gpio_leds);
 416
 417         platform_device_register(&dns323_button_device);
 418
 419         i2c_register_board_info(0, dns323_i2c_devices,
 420                                 ARRAY_SIZE(dns323_i2c_devices));
 421
 422         /*
 423          * Configure peripherals.
 424          */
 425         if (dns323_read_mac_addr() < 0)
 426                 printk("DNS323: Failed to read MAC address\n");
 427
 428         orion5x_ehci0_init();
 429         orion5x_eth_init(&dns323_eth_data);
 430         orion5x_i2c_init();
 431         orion5x_uart0_init();
 432
 433         /* The 5182 has its SATA controller on-chip, and needs its own little
 434          * init routine.
 435          */
 436         if (dns323_dev_id() == MV88F5182_DEV_ID)
 437                 orion5x_sata_init(&dns323_sata_data);
 438
 439         /* The 5182 has flag to indicate the system is up. Without this flag
 440          * set, power LED will flash and cannot be controlled via leds-gpio.
 441          */
 442         if (dns323_dev_id() == MV88F5182_DEV_ID)
 443                 gpio_set_value(DNS323_GPIO_SYSTEM_UP, 1);
 444
 445         /* Register dns323 specific power-off method */
 446         if (gpio_request(DNS323_GPIO_POWER_OFF, "POWEROFF") != 0 ||
 447             gpio_direction_output(DNS323_GPIO_POWER_OFF, 0) != 0)
 448                 pr_err("DNS323: failed to setup power-off GPIO\n");
 449         if (dns323_dev_id() == MV88F5182_DEV_ID)
 450                 pm_power_off = dns323b_power_off;
 451         else
 452                 pm_power_off = dns323a_power_off;
 453 }
 454
 455 /* Warning: D-Link uses a wrong mach-type (=526) in their bootloader */
 456 MACHINE_START(DNS323, "D-Link DNS-323")
 457         /* Maintainer: Herbert Valerio Riedel <hvr@gnu.org> */
 458         .phys_io        = ORION5X_REGS_PHYS_BASE,
 459         .io_pg_offst    = ((ORION5X_REGS_VIRT_BASE) >> 18) & 0xFFFC,
 460         .boot_params    = 0x00000100,
 461         .init_machine   = dns323_init,
 462         .map_io         = orion5x_map_io,
 463         .init_irq       = orion5x_init_irq,
 464         .timer          = &orion5x_timer,
 465         .fixup          = tag_fixup_mem32,
 466 MACHINE_END