arch/arm/mach-orion/dns323-setup.c

   1 /*
   2  * arch/arm/mach-orion/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 <asm/mach-types.h>
  25 #include <asm/gpio.h>
  26 #include <asm/mach/arch.h>
  27 #include <asm/mach/pci.h>
  28 #include <asm/arch/orion.h>
  29 #include <asm/arch/platform.h>
  30 #include "common.h"
  31
  32 #define DNS323_GPIO_LED_RIGHT_AMBER     1
  33 #define DNS323_GPIO_LED_LEFT_AMBER      2
  34 #define DNS323_GPIO_LED_POWER           5
  35 #define DNS323_GPIO_OVERTEMP            6
  36 #define DNS323_GPIO_RTC                 7
  37 #define DNS323_GPIO_POWER_OFF           8
  38 #define DNS323_GPIO_KEY_POWER           9
  39 #define DNS323_GPIO_KEY_RESET           10
  40
  41 /****************************************************************************
  42  * PCI setup
  43  */
  44
  45 static int __init dns323_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
  46 {
  47         /* PCI-E */
  48         if (dev->bus->number == orion_pcie_local_bus_nr())
  49                 return IRQ_ORION_PCIE0_INT;
  50
  51         pr_err("%s: requested mapping for unknown bus\n", __func__);
  52
  53         return -1;
  54 }
  55
  56 static struct hw_pci dns323_pci __initdata = {
  57         .nr_controllers = 1,
  58         .swizzle        = pci_std_swizzle,
  59         .setup          = orion_pci_sys_setup,
  60         .scan           = orion_pci_sys_scan_bus,
  61         .map_irq        = dns323_pci_map_irq,
  62 };
  63
  64 static int __init dns323_pci_init(void)
  65 {
  66         if (machine_is_dns323())
  67                 pci_common_init(&dns323_pci);
  68
  69         return 0;
  70 }
  71
  72 subsys_initcall(dns323_pci_init);
  73
  74 /****************************************************************************
  75  * Ethernet
  76  */
  77
  78 static struct mv643xx_eth_platform_data dns323_eth_data = {
  79         .phy_addr = 8,
  80         .force_phy_addr = 1,
  81 };
  82
  83 /****************************************************************************
  84  * 8MiB NOR flash (Spansion S29GL064M90TFIR4)
  85  *
  86  * Layout as used by D-Link:
  87  *  0x00000000-0x00010000 : "MTD1"
  88  *  0x00010000-0x00020000 : "MTD2"
  89  *  0x00020000-0x001a0000 : "Linux Kernel"
  90  *  0x001a0000-0x007d0000 : "File System"
  91  *  0x007d0000-0x00800000 : "u-boot"
  92  */
  93
  94 #define DNS323_NOR_BOOT_BASE 0xf4000000
  95 #define DNS323_NOR_BOOT_SIZE SZ_8M
  96
  97 static struct mtd_partition dns323_partitions[] = {
  98         {
  99                 .name   = "MTD1",
 100                 .size   = 0x00010000,
 101                 .offset = 0,
 102         }, {
 103                 .name   = "MTD2",
 104                 .size   = 0x00010000,
 105                 .offset = 0x00010000,
 106         }, {
 107                 .name   = "Linux Kernel",
 108                 .size   = 0x00180000,
 109                 .offset = 0x00020000,
 110         }, {
 111                 .name   = "File System",
 112                 .size   = 0x00630000,
 113                 .offset = 0x001A0000,
 114         }, {
 115                 .name   = "u-boot",
 116                 .size   = 0x00030000,
 117                 .offset = 0x007d0000,
 118         }
 119 };
 120
 121 static struct physmap_flash_data dns323_nor_flash_data = {
 122         .width          = 1,
 123         .parts          = dns323_partitions,
 124         .nr_parts       = ARRAY_SIZE(dns323_partitions)
 125 };
 126
 127 static struct resource dns323_nor_flash_resource = {
 128         .flags          = IORESOURCE_MEM,
 129         .start          = DNS323_NOR_BOOT_BASE,
 130         .end            = DNS323_NOR_BOOT_BASE + DNS323_NOR_BOOT_SIZE - 1,
 131 };
 132
 133 static struct platform_device dns323_nor_flash = {
 134         .name           = "physmap-flash",
 135         .id             = 0,
 136         .dev            = { .platform_data = &dns323_nor_flash_data, },
 137         .resource       = &dns323_nor_flash_resource,
 138         .num_resources  = 1,
 139 };
 140
 141 /****************************************************************************
 142  * GPIO LEDs (simple - doesn't use hardware blinking support)
 143  */
 144
 145 static struct gpio_led dns323_leds[] = {
 146         {
 147                 .name = "power:blue",
 148                 .gpio = DNS323_GPIO_LED_POWER,
 149                 .active_low = 1,
 150         }, {
 151                 .name = "right:amber",
 152                 .gpio = DNS323_GPIO_LED_RIGHT_AMBER,
 153                 .active_low = 1,
 154         }, {
 155                 .name = "left:amber",
 156                 .gpio = DNS323_GPIO_LED_LEFT_AMBER,
 157                 .active_low = 1,
 158         },
 159 };
 160
 161 static struct gpio_led_platform_data dns323_led_data = {
 162         .num_leds       = ARRAY_SIZE(dns323_leds),
 163         .leds           = dns323_leds,
 164 };
 165
 166 static struct platform_device dns323_gpio_leds = {
 167         .name           = "leds-gpio",
 168         .id             = -1,
 169         .dev            = { .platform_data = &dns323_led_data, },
 170 };
 171
 172 /****************************************************************************
 173  * GPIO Attached Keys
 174  */
 175
 176 static struct gpio_keys_button dns323_buttons[] = {
 177         {
 178                 .code           = KEY_RESTART,
 179                 .gpio           = DNS323_GPIO_KEY_RESET,
 180                 .desc           = "Reset Button",
 181                 .active_low     = 1,
 182         },
 183         {
 184                 .code           = KEY_POWER,
 185                 .gpio           = DNS323_GPIO_KEY_POWER,
 186                 .desc           = "Power Button",
 187                 .active_low     = 1,
 188         }
 189 };
 190
 191 static struct gpio_keys_platform_data dns323_button_data = {
 192         .buttons        = dns323_buttons,
 193         .nbuttons       = ARRAY_SIZE(dns323_buttons),
 194 };
 195
 196 static struct platform_device dns323_button_device = {
 197         .name           = "gpio-keys",
 198         .id             = -1,
 199         .num_resources  = 0,
 200         .dev            = { .platform_data  = &dns323_button_data, },
 201 };
 202
 203 /****************************************************************************
 204  * General Setup
 205  */
 206
 207 static struct platform_device *dns323_plat_devices[] __initdata = {
 208         &dns323_nor_flash,
 209         &dns323_gpio_leds,
 210         &dns323_button_device,
 211 };
 212
 213 /*
 214  * On the DNS-323 the following devices are attached via I2C:
 215  *
 216  *  i2c addr | chip        | description
 217  *  0x3e     | GMT G760Af  | fan speed PWM controller
 218  *  0x48     | GMT G751-2f | temp. sensor and therm. watchdog (LM75 compatible)
 219  *  0x68     | ST M41T80   | RTC w/ alarm
 220  */
 221 static struct i2c_board_info __initdata dns323_i2c_devices[] = {
 222         {
 223                 I2C_BOARD_INFO("g760a", 0x3e),
 224                 .type = "g760a",
 225         },
 226 #if 0
 227         /* this entry requires the new-style driver model lm75 driver,
 228          * for the meantime "insmod lm75.ko force_lm75=0,0x48" is needed */
 229         {
 230                 I2C_BOARD_INFO("lm75", 0x48),
 231                 .type = "g751",
 232         },
 233 #endif
 234         {
 235                 I2C_BOARD_INFO("rtc-m41t80", 0x68),
 236                 .type = "m41t80",
 237         }
 238 };
 239
 240 /* DNS-323 specific power off method */
 241 static void dns323_power_off(void)
 242 {
 243         pr_info("%s: triggering power-off...\n", __func__);
 244         gpio_set_value(DNS323_GPIO_POWER_OFF, 1);
 245 }
 246
 247 static void __init dns323_init(void)
 248 {
 249         /* Setup basic Orion functions. Need to be called early. */
 250         orion_init();
 251
 252         /* setup flash mapping
 253          * CS3 holds a 8 MB Spansion S29GL064M90TFIR4
 254          */
 255         orion_setup_cpu_win(ORION_DEV_BOOT, DNS323_NOR_BOOT_BASE,
 256                             DNS323_NOR_BOOT_SIZE, -1);
 257
 258         /* DNS-323 has a Marvell 88X7042 SATA controller attached via PCIE
 259          *
 260          * Open a special address decode windows for the PCIE WA.
 261          */
 262         orion_write(ORION_REGS_BASE | 0x20074, ORION_PCIE_WA_BASE);
 263         orion_write(ORION_REGS_BASE | 0x20070,
 264                     (0x7941 | (((ORION_PCIE_WA_SIZE >> 16) - 1)) << 16));
 265
 266         /* set MPP to 0 as D-Link's 2.6.12.6 kernel did */
 267         orion_write(MPP_0_7_CTRL, 0);
 268         orion_write(MPP_8_15_CTRL, 0);
 269         orion_write(MPP_16_19_CTRL, 0);
 270         orion_write(MPP_DEV_CTRL, 0);
 271
 272         /* Define used GPIO pins
 273
 274           GPIO Map:
 275
 276           |  0 |     | PEX_RST_OUT (not controlled by GPIO)
 277           |  1 | Out | right amber LED (= sata ch0 LED)  (low-active)
 278           |  2 | Out | left  amber LED (= sata ch1 LED)  (low-active)
 279           |  3 | Out | //unknown//
 280           |  4 | Out | power button LED (low-active, together with pin #5)
 281           |  5 | Out | power button LED (low-active, together with pin #4)
 282           |  6 | In  | GMT G751-2f overtemp. shutdown signal (low-active)
 283           |  7 | In  | M41T80 nIRQ/OUT/SQW signal
 284           |  8 | Out | triggers power off (high-active)
 285           |  9 | In  | power button switch (low-active)
 286           | 10 | In  | reset button switch (low-active)
 287           | 11 | Out | //unknown//
 288           | 12 | Out | //unknown//
 289           | 13 | Out | //unknown//
 290           | 14 | Out | //unknown//
 291           | 15 | Out | //unknown//
 292         */
 293         orion_gpio_set_valid_pins(0x07f6);
 294
 295         /* register dns323 specific power-off method */
 296         if ((gpio_request(DNS323_GPIO_POWER_OFF, "POWEROFF") != 0)
 297             || (gpio_direction_output(DNS323_GPIO_POWER_OFF, 0) != 0))
 298                 pr_err("DNS323: failed to setup power-off GPIO\n");
 299
 300         pm_power_off = dns323_power_off;
 301
 302         /* register flash and other platform devices */
 303         platform_add_devices(dns323_plat_devices,
 304                              ARRAY_SIZE(dns323_plat_devices));
 305
 306         i2c_register_board_info(0, dns323_i2c_devices,
 307                                 ARRAY_SIZE(dns323_i2c_devices));
 308
 309         orion_eth_init(&dns323_eth_data);
 310 }
 311
 312 /* Warning: D-Link uses a wrong mach-type (=526) in their bootloader */
 313 MACHINE_START(DNS323, "D-Link DNS-323")
 314         /* Maintainer: Herbert Valerio Riedel <hvr@gnu.org> */
 315         .phys_io        = ORION_REGS_BASE,
 316         .io_pg_offst    = ((ORION_REGS_BASE) >> 18) & 0xFFFC,
 317         .boot_params    = 0x00000100,
 318         .init_machine   = dns323_init,
 319         .map_io         = orion_map_io,
 320         .init_irq       = orion_init_irq,
 321         .timer          = &orion_timer,
 322 MACHINE_END