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_POWER1          4
  38 #define DNS323_GPIO_LED_POWER2          5
  39 #define DNS323_GPIO_OVERTEMP            6
  40 #define DNS323_GPIO_RTC                 7
  41 #define DNS323_GPIO_POWER_OFF           8
  42 #define DNS323_GPIO_KEY_POWER           9
  43 #define DNS323_GPIO_KEY_RESET           10
  44
  45 /****************************************************************************
  46  * PCI setup
  47  */
  48
  49 static int __init dns323_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
  50 {
  51         int irq;
  52
  53         /*
  54          * Check for devices with hard-wired IRQs.
  55          */
  56         irq = orion5x_pci_map_irq(dev, slot, pin);
  57         if (irq != -1)
  58                 return irq;
  59
  60         return -1;
  61 }
  62
  63 static struct hw_pci dns323_pci __initdata = {
  64         .nr_controllers = 2,
  65         .swizzle        = pci_std_swizzle,
  66         .setup          = orion5x_pci_sys_setup,
  67         .scan           = orion5x_pci_sys_scan_bus,
  68         .map_irq        = dns323_pci_map_irq,
  69 };
  70
  71 static int __init dns323_dev_id(void)
  72 {
  73         u32 dev, rev;
  74
  75         orion5x_pcie_id(&dev, &rev);
  76
  77         return dev;
  78 }
  79
  80 static int __init dns323_pci_init(void)
  81 {
  82         /* The 5182 doesn't really use its PCI bus, and initialising PCI
  83          * gets in the way of initialising the SATA controller.
  84          */
  85         if (machine_is_dns323() && dns323_dev_id() != MV88F5182_DEV_ID)
  86                 pci_common_init(&dns323_pci);
  87
  88         return 0;
  89 }
  90
  91 subsys_initcall(dns323_pci_init);
  92
  93 /****************************************************************************
  94  * 8MiB NOR flash (Spansion S29GL064M90TFIR4)
  95  *
  96  * Layout as used by D-Link:
  97  *  0x00000000-0x00010000 : "MTD1"
  98  *  0x00010000-0x00020000 : "MTD2"
  99  *  0x00020000-0x001a0000 : "Linux Kernel"
 100  *  0x001a0000-0x007d0000 : "File System"
 101  *  0x007d0000-0x00800000 : "u-boot"
 102  */
 103
 104 #define DNS323_NOR_BOOT_BASE 0xf4000000
 105 #define DNS323_NOR_BOOT_SIZE SZ_8M
 106
 107 static struct mtd_partition dns323_partitions[] = {
 108         {
 109                 .name   = "MTD1",
 110                 .size   = 0x00010000,
 111                 .offset = 0,
 112         }, {
 113                 .name   = "MTD2",
 114                 .size   = 0x00010000,
 115                 .offset = 0x00010000,
 116         }, {
 117                 .name   = "Linux Kernel",
 118                 .size   = 0x00180000,
 119                 .offset = 0x00020000,
 120         }, {
 121                 .name   = "File System",
 122                 .size   = 0x00630000,
 123                 .offset = 0x001A0000,
 124         }, {
 125                 .name   = "u-boot",
 126                 .size   = 0x00030000,
 127                 .offset = 0x007d0000,
 128         },
 129 };
 130
 131 static struct physmap_flash_data dns323_nor_flash_data = {
 132         .width          = 1,
 133         .parts          = dns323_partitions,
 134         .nr_parts       = ARRAY_SIZE(dns323_partitions)
 135 };
 136
 137 static struct resource dns323_nor_flash_resource = {
 138         .flags          = IORESOURCE_MEM,
 139         .start          = DNS323_NOR_BOOT_BASE,
 140         .end            = DNS323_NOR_BOOT_BASE + DNS323_NOR_BOOT_SIZE - 1,
 141 };
 142
 143 static struct platform_device dns323_nor_flash = {
 144         .name           = "physmap-flash",
 145         .id             = 0,
 146         .dev            = {
 147                 .platform_data  = &dns323_nor_flash_data,
 148         },
 149         .resource       = &dns323_nor_flash_resource,
 150         .num_resources  = 1,
 151 };
 152
 153 /****************************************************************************
 154  * Ethernet
 155  */
 156
 157 static struct mv643xx_eth_platform_data dns323_eth_data = {
 158         .phy_addr = MV643XX_ETH_PHY_ADDR(8),
 159 };
 160
 161 /* dns323_parse_hex_*() taken from tsx09-common.c; should a common copy of these
 162  * functions be kept somewhere?
 163  */
 164 static int __init dns323_parse_hex_nibble(char n)
 165 {
 166         if (n >= '0' && n <= '9')
 167                 return n - '0';
 168
 169         if (n >= 'A' && n <= 'F')
 170                 return n - 'A' + 10;
 171
 172         if (n >= 'a' && n <= 'f')
 173                 return n - 'a' + 10;
 174
 175         return -1;
 176 }
 177
 178 static int __init dns323_parse_hex_byte(const char *b)
 179 {
 180         int hi;
 181         int lo;
 182
 183         hi = dns323_parse_hex_nibble(b[0]);
 184         lo = dns323_parse_hex_nibble(b[1]);
 185
 186         if (hi < 0 || lo < 0)
 187                 return -1;
 188
 189         return (hi << 4) | lo;
 190 }
 191
 192 static int __init dns323_read_mac_addr(void)
 193 {
 194         u_int8_t addr[6];
 195         int i;
 196         char *mac_page;
 197
 198         /* MAC address is stored as a regular ol' string in /dev/mtdblock4
 199          * (0x007d0000-0x00800000) starting at offset 196480 (0x2ff80).
 200          */
 201         mac_page = ioremap(DNS323_NOR_BOOT_BASE + 0x7d0000 + 196480, 1024);
 202         if (!mac_page)
 203                 return -ENOMEM;
 204
 205         /* Sanity check the string we're looking at */
 206         for (i = 0; i < 5; i++) {
 207                 if (*(mac_page + (i * 3) + 2) != ':') {
 208                         goto error_fail;
 209                 }
 210         }
 211
 212         for (i = 0; i < 6; i++) {
 213                 int byte;
 214
 215                 byte = dns323_parse_hex_byte(mac_page + (i * 3));
 216                 if (byte < 0) {
 217                         goto error_fail;
 218                 }
 219
 220                 addr[i] = byte;
 221         }
 222
 223         iounmap(mac_page);
 224         printk("DNS323: Found ethernet MAC address: ");
 225         for (i = 0; i < 6; i++)
 226                 printk("%.2x%s", addr[i], (i < 5) ? ":" : ".\n");
 227
 228         memcpy(dns323_eth_data.mac_addr, addr, 6);
 229
 230         return 0;
 231
 232 error_fail:
 233         iounmap(mac_page);
 234         return -EINVAL;
 235 }
 236
 237 /****************************************************************************
 238  * GPIO LEDs (simple - doesn't use hardware blinking support)
 239  */
 240
 241 #define ORION_BLINK_HALF_PERIOD 100 /* ms */
 242
 243 static int dns323_gpio_blink_set(unsigned gpio,
 244         unsigned long *delay_on, unsigned long *delay_off)
 245 {
 246         static int value = 0;
 247
 248         if (!*delay_on && !*delay_off)
 249                 *delay_on = *delay_off = ORION_BLINK_HALF_PERIOD;
 250
 251         if (ORION_BLINK_HALF_PERIOD == *delay_on
 252             && ORION_BLINK_HALF_PERIOD == *delay_off) {
 253                 value = !value;
 254                 orion_gpio_set_blink(gpio, value);
 255                 return 0;
 256         }
 257
 258         return -EINVAL;
 259 }
 260
 261 static struct gpio_led dns323_leds[] = {
 262         {
 263                 .name = "power:blue",
 264                 .gpio = DNS323_GPIO_LED_POWER2,
 265                 .default_trigger = "timer",
 266         }, {
 267                 .name = "right:amber",
 268                 .gpio = DNS323_GPIO_LED_RIGHT_AMBER,
 269                 .active_low = 1,
 270         }, {
 271                 .name = "left:amber",
 272                 .gpio = DNS323_GPIO_LED_LEFT_AMBER,
 273                 .active_low = 1,
 274         },
 275 };
 276
 277 static struct gpio_led_platform_data dns323_led_data = {
 278         .num_leds       = ARRAY_SIZE(dns323_leds),
 279         .leds           = dns323_leds,
 280         .gpio_blink_set = dns323_gpio_blink_set,
 281 };
 282
 283 static struct platform_device dns323_gpio_leds = {
 284         .name           = "leds-gpio",
 285         .id             = -1,
 286         .dev            = {
 287                 .platform_data  = &dns323_led_data,
 288         },
 289 };
 290
 291 /****************************************************************************
 292  * GPIO Attached Keys
 293  */
 294
 295 static struct gpio_keys_button dns323_buttons[] = {
 296         {
 297                 .code           = KEY_RESTART,
 298                 .gpio           = DNS323_GPIO_KEY_RESET,
 299                 .desc           = "Reset Button",
 300                 .active_low     = 1,
 301         }, {
 302                 .code           = KEY_POWER,
 303                 .gpio           = DNS323_GPIO_KEY_POWER,
 304                 .desc           = "Power Button",
 305                 .active_low     = 1,
 306         },
 307 };
 308
 309 static struct gpio_keys_platform_data dns323_button_data = {
 310         .buttons        = dns323_buttons,
 311         .nbuttons       = ARRAY_SIZE(dns323_buttons),
 312 };
 313
 314 static struct platform_device dns323_button_device = {
 315         .name           = "gpio-keys",
 316         .id             = -1,
 317         .num_resources  = 0,
 318         .dev            = {
 319                 .platform_data  = &dns323_button_data,
 320         },
 321 };
 322
 323 /*****************************************************************************
 324  * SATA
 325  */
 326 static struct mv_sata_platform_data dns323_sata_data = {
 327        .n_ports        = 2,
 328 };
 329
 330 /****************************************************************************
 331  * General Setup
 332  */
 333 static struct orion5x_mpp_mode dns323_mv88f5181_mpp_modes[] __initdata = {
 334         {  0, MPP_PCIE_RST_OUTn },
 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_UNUSED },
 347         { 13, MPP_UNUSED },
 348         { 14, MPP_UNUSED },
 349         { 15, MPP_UNUSED },
 350         { 16, MPP_UNUSED },
 351         { 17, MPP_UNUSED },
 352         { 18, MPP_UNUSED },
 353         { 19, MPP_UNUSED },
 354         { -1 },
 355 };
 356
 357 static struct orion5x_mpp_mode dns323_mv88f5182_mpp_modes[] __initdata = {
 358         {  0, MPP_UNUSED },
 359         {  1, MPP_GPIO },               /* right amber LED (sata ch0) */
 360         {  2, MPP_GPIO },               /* left amber LED (sata ch1) */
 361         {  3, MPP_GPIO },               /* system up flag */
 362         {  4, MPP_GPIO },               /* power button LED */
 363         {  5, MPP_GPIO },               /* power button LED */
 364         {  6, MPP_GPIO },               /* GMT G751-2f overtemp */
 365         {  7, MPP_GPIO },               /* M41T80 nIRQ/OUT/SQW */
 366         {  8, MPP_GPIO },               /* triggers power off */
 367         {  9, MPP_GPIO },               /* power button switch */
 368         { 10, MPP_GPIO },               /* reset button switch */
 369         { 11, MPP_UNUSED },
 370         { 12, MPP_SATA_LED },
 371         { 13, MPP_SATA_LED },
 372         { 14, MPP_SATA_LED },
 373         { 15, MPP_SATA_LED },
 374         { 16, MPP_UNUSED },
 375         { 17, MPP_UNUSED },
 376         { 18, MPP_UNUSED },
 377         { 19, MPP_UNUSED },
 378         { -1 },
 379 };
 380
 381 /*
 382  * On the DNS-323 the following devices are attached via I2C:
 383  *
 384  *  i2c addr | chip        | description
 385  *  0x3e     | GMT G760Af  | fan speed PWM controller
 386  *  0x48     | GMT G751-2f | temp. sensor and therm. watchdog (LM75 compatible)
 387  *  0x68     | ST M41T80   | RTC w/ alarm
 388  */
 389 static struct i2c_board_info __initdata dns323_i2c_devices[] = {
 390         {
 391                 I2C_BOARD_INFO("g760a", 0x3e),
 392         }, {
 393                 I2C_BOARD_INFO("lm75", 0x48),
 394         }, {
 395                 I2C_BOARD_INFO("m41t80", 0x68),
 396         },
 397 };
 398
 399 /* DNS-323 rev. A specific power off method */
 400 static void dns323a_power_off(void)
 401 {
 402         pr_info("%s: triggering power-off...\n", __func__);
 403         gpio_set_value(DNS323_GPIO_POWER_OFF, 1);
 404 }
 405
 406 /* DNS-323 rev B specific power off method */
 407 static void dns323b_power_off(void)
 408 {
 409         pr_info("%s: triggering power-off...\n", __func__);
 410         /* Pin has to be changed to 1 and back to 0 to do actual power off. */
 411         gpio_set_value(DNS323_GPIO_POWER_OFF, 1);
 412         mdelay(100);
 413         gpio_set_value(DNS323_GPIO_POWER_OFF, 0);
 414 }
 415
 416 static void __init dns323_init(void)
 417 {
 418         /* Setup basic Orion functions. Need to be called early. */
 419         orion5x_init();
 420
 421         /* Just to be tricky, the 5182 has a completely different
 422          * set of MPP modes to the 5181.
 423          */
 424         if (dns323_dev_id() == MV88F5182_DEV_ID)
 425                 orion5x_mpp_conf(dns323_mv88f5182_mpp_modes);
 426         else {
 427                 orion5x_mpp_conf(dns323_mv88f5181_mpp_modes);
 428                 writel(0, MPP_DEV_CTRL);                /* DEV_D[31:16] */
 429         }
 430
 431         /* setup flash mapping
 432          * CS3 holds a 8 MB Spansion S29GL064M90TFIR4
 433          */
 434         orion5x_setup_dev_boot_win(DNS323_NOR_BOOT_BASE, DNS323_NOR_BOOT_SIZE);
 435         platform_device_register(&dns323_nor_flash);
 436
 437         /* The 5181 power LED is active low and requires
 438          * DNS323_GPIO_LED_POWER1 to also be low.
 439          */
 440         if (dns323_dev_id() == MV88F5181_DEV_ID) {
 441                 dns323_leds[0].active_low = 1;
 442                 gpio_direction_output(DNS323_GPIO_LED_POWER1, 0);
 443         }
 444
 445         platform_device_register(&dns323_gpio_leds);
 446
 447         platform_device_register(&dns323_button_device);
 448
 449         i2c_register_board_info(0, dns323_i2c_devices,
 450                                 ARRAY_SIZE(dns323_i2c_devices));
 451
 452         /*
 453          * Configure peripherals.
 454          */
 455         if (dns323_read_mac_addr() < 0)
 456                 printk("DNS323: Failed to read MAC address\n");
 457
 458         orion5x_ehci0_init();
 459         orion5x_eth_init(&dns323_eth_data);
 460         orion5x_i2c_init();
 461         orion5x_uart0_init();
 462
 463         /* The 5182 has its SATA controller on-chip, and needs its own little
 464          * init routine.
 465          */
 466         if (dns323_dev_id() == MV88F5182_DEV_ID)
 467                 orion5x_sata_init(&dns323_sata_data);
 468
 469         /* The 5182 has flag to indicate the system is up. Without this flag
 470          * set, power LED will flash and cannot be controlled via leds-gpio.
 471          */
 472         if (dns323_dev_id() == MV88F5182_DEV_ID)
 473                 gpio_set_value(DNS323_GPIO_SYSTEM_UP, 1);
 474
 475         /* Register dns323 specific power-off method */
 476         if (gpio_request(DNS323_GPIO_POWER_OFF, "POWEROFF") != 0 ||
 477             gpio_direction_output(DNS323_GPIO_POWER_OFF, 0) != 0)
 478                 pr_err("DNS323: failed to setup power-off GPIO\n");
 479         if (dns323_dev_id() == MV88F5182_DEV_ID)
 480                 pm_power_off = dns323b_power_off;
 481         else
 482                 pm_power_off = dns323a_power_off;
 483 }
 484
 485 /* Warning: D-Link uses a wrong mach-type (=526) in their bootloader */
 486 MACHINE_START(DNS323, "D-Link DNS-323")
 487         /* Maintainer: Herbert Valerio Riedel <hvr@gnu.org> */
 488         .phys_io        = ORION5X_REGS_PHYS_BASE,
 489         .io_pg_offst    = ((ORION5X_REGS_VIRT_BASE) >> 18) & 0xFFFC,
 490         .boot_params    = 0x00000100,
 491         .init_machine   = dns323_init,
 492         .map_io         = orion5x_map_io,
 493         .init_irq       = orion5x_init_irq,
 494         .timer          = &orion5x_timer,
 495         .fixup          = tag_fixup_mem32,
 496 MACHINE_END