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 <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/orion5x.h>
  29 #include "common.h"
  30
  31 #define DNS323_GPIO_LED_RIGHT_AMBER     1
  32 #define DNS323_GPIO_LED_LEFT_AMBER      2
  33 #define DNS323_GPIO_LED_POWER           5
  34 #define DNS323_GPIO_OVERTEMP            6
  35 #define DNS323_GPIO_RTC                 7
  36 #define DNS323_GPIO_POWER_OFF           8
  37 #define DNS323_GPIO_KEY_POWER           9
  38 #define DNS323_GPIO_KEY_RESET           10
  39
  40 /****************************************************************************
  41  * PCI setup
  42  */
  43
  44 static int __init dns323_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
  45 {
  46         int irq;
  47
  48         /*
  49          * Check for devices with hard-wired IRQs.
  50          */
  51         irq = orion5x_pci_map_irq(dev, slot, pin);
  52         if (irq != -1)
  53                 return irq;
  54
  55         pr_err("%s: requested mapping for unknown device\n", __func__);
  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_pci_init(void)
  69 {
  70         if (machine_is_dns323())
  71                 pci_common_init(&dns323_pci);
  72
  73         return 0;
  74 }
  75
  76 subsys_initcall(dns323_pci_init);
  77
  78 /****************************************************************************
  79  * Ethernet
  80  */
  81
  82 static struct mv643xx_eth_platform_data dns323_eth_data = {
  83         .phy_addr = 8,
  84         .force_phy_addr = 1,
  85 };
  86
  87 /****************************************************************************
  88  * 8MiB NOR flash (Spansion S29GL064M90TFIR4)
  89  *
  90  * Layout as used by D-Link:
  91  *  0x00000000-0x00010000 : "MTD1"
  92  *  0x00010000-0x00020000 : "MTD2"
  93  *  0x00020000-0x001a0000 : "Linux Kernel"
  94  *  0x001a0000-0x007d0000 : "File System"
  95  *  0x007d0000-0x00800000 : "u-boot"
  96  */
  97
  98 #define DNS323_NOR_BOOT_BASE 0xf4000000
  99 #define DNS323_NOR_BOOT_SIZE SZ_8M
 100
 101 static struct mtd_partition dns323_partitions[] = {
 102         {
 103                 .name   = "MTD1",
 104                 .size   = 0x00010000,
 105                 .offset = 0,
 106         }, {
 107                 .name   = "MTD2",
 108                 .size   = 0x00010000,
 109                 .offset = 0x00010000,
 110         }, {
 111                 .name   = "Linux Kernel",
 112                 .size   = 0x00180000,
 113                 .offset = 0x00020000,
 114         }, {
 115                 .name   = "File System",
 116                 .size   = 0x00630000,
 117                 .offset = 0x001A0000,
 118         }, {
 119                 .name   = "u-boot",
 120                 .size   = 0x00030000,
 121                 .offset = 0x007d0000,
 122         }
 123 };
 124
 125 static struct physmap_flash_data dns323_nor_flash_data = {
 126         .width          = 1,
 127         .parts          = dns323_partitions,
 128         .nr_parts       = ARRAY_SIZE(dns323_partitions)
 129 };
 130
 131 static struct resource dns323_nor_flash_resource = {
 132         .flags          = IORESOURCE_MEM,
 133         .start          = DNS323_NOR_BOOT_BASE,
 134         .end            = DNS323_NOR_BOOT_BASE + DNS323_NOR_BOOT_SIZE - 1,
 135 };
 136
 137 static struct platform_device dns323_nor_flash = {
 138         .name           = "physmap-flash",
 139         .id             = 0,
 140         .dev            = { .platform_data = &dns323_nor_flash_data, },
 141         .resource       = &dns323_nor_flash_resource,
 142         .num_resources  = 1,
 143 };
 144
 145 /****************************************************************************
 146  * GPIO LEDs (simple - doesn't use hardware blinking support)
 147  */
 148
 149 static struct gpio_led dns323_leds[] = {
 150         {
 151                 .name = "power:blue",
 152                 .gpio = DNS323_GPIO_LED_POWER,
 153                 .active_low = 1,
 154         }, {
 155                 .name = "right:amber",
 156                 .gpio = DNS323_GPIO_LED_RIGHT_AMBER,
 157                 .active_low = 1,
 158         }, {
 159                 .name = "left:amber",
 160                 .gpio = DNS323_GPIO_LED_LEFT_AMBER,
 161                 .active_low = 1,
 162         },
 163 };
 164
 165 static struct gpio_led_platform_data dns323_led_data = {
 166         .num_leds       = ARRAY_SIZE(dns323_leds),
 167         .leds           = dns323_leds,
 168 };
 169
 170 static struct platform_device dns323_gpio_leds = {
 171         .name           = "leds-gpio",
 172         .id             = -1,
 173         .dev            = { .platform_data = &dns323_led_data, },
 174 };
 175
 176 /****************************************************************************
 177  * GPIO Attached Keys
 178  */
 179
 180 static struct gpio_keys_button dns323_buttons[] = {
 181         {
 182                 .code           = KEY_RESTART,
 183                 .gpio           = DNS323_GPIO_KEY_RESET,
 184                 .desc           = "Reset Button",
 185                 .active_low     = 1,
 186         },
 187         {
 188                 .code           = KEY_POWER,
 189                 .gpio           = DNS323_GPIO_KEY_POWER,
 190                 .desc           = "Power Button",
 191                 .active_low     = 1,
 192         }
 193 };
 194
 195 static struct gpio_keys_platform_data dns323_button_data = {
 196         .buttons        = dns323_buttons,
 197         .nbuttons       = ARRAY_SIZE(dns323_buttons),
 198 };
 199
 200 static struct platform_device dns323_button_device = {
 201         .name           = "gpio-keys",
 202         .id             = -1,
 203         .num_resources  = 0,
 204         .dev            = { .platform_data  = &dns323_button_data, },
 205 };
 206
 207 /****************************************************************************
 208  * General Setup
 209  */
 210
 211 static struct platform_device *dns323_plat_devices[] __initdata = {
 212         &dns323_nor_flash,
 213         &dns323_gpio_leds,
 214         &dns323_button_device,
 215 };
 216
 217 /*
 218  * On the DNS-323 the following devices are attached via I2C:
 219  *
 220  *  i2c addr | chip        | description
 221  *  0x3e     | GMT G760Af  | fan speed PWM controller
 222  *  0x48     | GMT G751-2f | temp. sensor and therm. watchdog (LM75 compatible)
 223  *  0x68     | ST M41T80   | RTC w/ alarm
 224  */
 225 static struct i2c_board_info __initdata dns323_i2c_devices[] = {
 226         {
 227                 I2C_BOARD_INFO("g760a", 0x3e),
 228         },
 229 #if 0
 230         /* this entry requires the new-style driver model lm75 driver,
 231          * for the meantime "insmod lm75.ko force_lm75=0,0x48" is needed */
 232         {
 233                 I2C_BOARD_INFO("g751", 0x48),
 234         },
 235 #endif
 236         {
 237                 I2C_BOARD_INFO("m41t80", 0x68),
 238         }
 239 };
 240
 241 /* DNS-323 specific power off method */
 242 static void dns323_power_off(void)
 243 {
 244         pr_info("%s: triggering power-off...\n", __func__);
 245         gpio_set_value(DNS323_GPIO_POWER_OFF, 1);
 246 }
 247
 248 static void __init dns323_init(void)
 249 {
 250         /* Setup basic Orion functions. Need to be called early. */
 251         orion5x_init();
 252
 253         /* setup flash mapping
 254          * CS3 holds a 8 MB Spansion S29GL064M90TFIR4
 255          */
 256         orion5x_setup_dev_boot_win(DNS323_NOR_BOOT_BASE, DNS323_NOR_BOOT_SIZE);
 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         orion5x_setup_pcie_wa_win(ORION5X_PCIE_WA_PHYS_BASE,
 263                                 ORION5X_PCIE_WA_SIZE);
 264
 265         /* set MPP to 0 as D-Link's 2.6.12.6 kernel did */
 266         orion5x_write(MPP_0_7_CTRL, 0);
 267         orion5x_write(MPP_8_15_CTRL, 0);
 268         orion5x_write(MPP_16_19_CTRL, 0);
 269         orion5x_write(MPP_DEV_CTRL, 0);
 270
 271         /* Define used GPIO pins
 272
 273           GPIO Map:
 274
 275           |  0 |     | PEX_RST_OUT (not controlled by GPIO)
 276           |  1 | Out | right amber LED (= sata ch0 LED)  (low-active)
 277           |  2 | Out | left  amber LED (= sata ch1 LED)  (low-active)
 278           |  3 | Out | //unknown//
 279           |  4 | Out | power button LED (low-active, together with pin #5)
 280           |  5 | Out | power button LED (low-active, together with pin #4)
 281           |  6 | In  | GMT G751-2f overtemp. shutdown signal (low-active)
 282           |  7 | In  | M41T80 nIRQ/OUT/SQW signal
 283           |  8 | Out | triggers power off (high-active)
 284           |  9 | In  | power button switch (low-active)
 285           | 10 | In  | reset button switch (low-active)
 286           | 11 | Out | //unknown//
 287           | 12 | Out | //unknown//
 288           | 13 | Out | //unknown//
 289           | 14 | Out | //unknown//
 290           | 15 | Out | //unknown//
 291         */
 292         orion5x_gpio_set_valid_pins(0x07f6);
 293
 294         /* register dns323 specific power-off method */
 295         if ((gpio_request(DNS323_GPIO_POWER_OFF, "POWEROFF") != 0)
 296             || (gpio_direction_output(DNS323_GPIO_POWER_OFF, 0) != 0))
 297                 pr_err("DNS323: failed to setup power-off GPIO\n");
 298
 299         pm_power_off = dns323_power_off;
 300
 301         /* register flash and other platform devices */
 302         platform_add_devices(dns323_plat_devices,
 303                              ARRAY_SIZE(dns323_plat_devices));
 304
 305         i2c_register_board_info(0, dns323_i2c_devices,
 306                                 ARRAY_SIZE(dns323_i2c_devices));
 307
 308         orion5x_eth_init(&dns323_eth_data);
 309 }
 310
 311 /* Warning: D-Link uses a wrong mach-type (=526) in their bootloader */
 312 MACHINE_START(DNS323, "D-Link DNS-323")
 313         /* Maintainer: Herbert Valerio Riedel <hvr@gnu.org> */
 314         .phys_io        = ORION5X_REGS_PHYS_BASE,
 315         .io_pg_offst    = ((ORION5X_REGS_VIRT_BASE) >> 18) & 0xFFFC,
 316         .boot_params    = 0x00000100,
 317         .init_machine   = dns323_init,
 318         .map_io         = orion5x_map_io,
 319         .init_irq       = orion5x_init_irq,
 320         .timer          = &orion5x_timer,
 321         .fixup          = tag_fixup_mem32,
 322 MACHINE_END