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         /* PCI-E */
  47         if (dev->bus->number == orion5x_pcie_local_bus_nr())
  48                 return IRQ_ORION5X_PCIE0_INT;
  49
  50         pr_err("%s: requested mapping for unknown bus\n", __func__);
  51
  52         return -1;
  53 }
  54
  55 static struct hw_pci dns323_pci __initdata = {
  56         .nr_controllers = 1,
  57         .swizzle        = pci_std_swizzle,
  58         .setup          = orion5x_pci_sys_setup,
  59         .scan           = orion5x_pci_sys_scan_bus,
  60         .map_irq        = dns323_pci_map_irq,
  61 };
  62
  63 static int __init dns323_pci_init(void)
  64 {
  65         if (machine_is_dns323())
  66                 pci_common_init(&dns323_pci);
  67
  68         return 0;
  69 }
  70
  71 subsys_initcall(dns323_pci_init);
  72
  73 /****************************************************************************
  74  * Ethernet
  75  */
  76
  77 static struct mv643xx_eth_platform_data dns323_eth_data = {
  78         .phy_addr = 8,
  79         .force_phy_addr = 1,
  80 };
  81
  82 /****************************************************************************
  83  * 8MiB NOR flash (Spansion S29GL064M90TFIR4)
  84  *
  85  * Layout as used by D-Link:
  86  *  0x00000000-0x00010000 : "MTD1"
  87  *  0x00010000-0x00020000 : "MTD2"
  88  *  0x00020000-0x001a0000 : "Linux Kernel"
  89  *  0x001a0000-0x007d0000 : "File System"
  90  *  0x007d0000-0x00800000 : "u-boot"
  91  */
  92
  93 #define DNS323_NOR_BOOT_BASE 0xf4000000
  94 #define DNS323_NOR_BOOT_SIZE SZ_8M
  95
  96 static struct mtd_partition dns323_partitions[] = {
  97         {
  98                 .name   = "MTD1",
  99                 .size   = 0x00010000,
 100                 .offset = 0,
 101         }, {
 102                 .name   = "MTD2",
 103                 .size   = 0x00010000,
 104                 .offset = 0x00010000,
 105         }, {
 106                 .name   = "Linux Kernel",
 107                 .size   = 0x00180000,
 108                 .offset = 0x00020000,
 109         }, {
 110                 .name   = "File System",
 111                 .size   = 0x00630000,
 112                 .offset = 0x001A0000,
 113         }, {
 114                 .name   = "u-boot",
 115                 .size   = 0x00030000,
 116                 .offset = 0x007d0000,
 117         }
 118 };
 119
 120 static struct physmap_flash_data dns323_nor_flash_data = {
 121         .width          = 1,
 122         .parts          = dns323_partitions,
 123         .nr_parts       = ARRAY_SIZE(dns323_partitions)
 124 };
 125
 126 static struct resource dns323_nor_flash_resource = {
 127         .flags          = IORESOURCE_MEM,
 128         .start          = DNS323_NOR_BOOT_BASE,
 129         .end            = DNS323_NOR_BOOT_BASE + DNS323_NOR_BOOT_SIZE - 1,
 130 };
 131
 132 static struct platform_device dns323_nor_flash = {
 133         .name           = "physmap-flash",
 134         .id             = 0,
 135         .dev            = { .platform_data = &dns323_nor_flash_data, },
 136         .resource       = &dns323_nor_flash_resource,
 137         .num_resources  = 1,
 138 };
 139
 140 /****************************************************************************
 141  * GPIO LEDs (simple - doesn't use hardware blinking support)
 142  */
 143
 144 static struct gpio_led dns323_leds[] = {
 145         {
 146                 .name = "power:blue",
 147                 .gpio = DNS323_GPIO_LED_POWER,
 148                 .active_low = 1,
 149         }, {
 150                 .name = "right:amber",
 151                 .gpio = DNS323_GPIO_LED_RIGHT_AMBER,
 152                 .active_low = 1,
 153         }, {
 154                 .name = "left:amber",
 155                 .gpio = DNS323_GPIO_LED_LEFT_AMBER,
 156                 .active_low = 1,
 157         },
 158 };
 159
 160 static struct gpio_led_platform_data dns323_led_data = {
 161         .num_leds       = ARRAY_SIZE(dns323_leds),
 162         .leds           = dns323_leds,
 163 };
 164
 165 static struct platform_device dns323_gpio_leds = {
 166         .name           = "leds-gpio",
 167         .id             = -1,
 168         .dev            = { .platform_data = &dns323_led_data, },
 169 };
 170
 171 /****************************************************************************
 172  * GPIO Attached Keys
 173  */
 174
 175 static struct gpio_keys_button dns323_buttons[] = {
 176         {
 177                 .code           = KEY_RESTART,
 178                 .gpio           = DNS323_GPIO_KEY_RESET,
 179                 .desc           = "Reset Button",
 180                 .active_low     = 1,
 181         },
 182         {
 183                 .code           = KEY_POWER,
 184                 .gpio           = DNS323_GPIO_KEY_POWER,
 185                 .desc           = "Power Button",
 186                 .active_low     = 1,
 187         }
 188 };
 189
 190 static struct gpio_keys_platform_data dns323_button_data = {
 191         .buttons        = dns323_buttons,
 192         .nbuttons       = ARRAY_SIZE(dns323_buttons),
 193 };
 194
 195 static struct platform_device dns323_button_device = {
 196         .name           = "gpio-keys",
 197         .id             = -1,
 198         .num_resources  = 0,
 199         .dev            = { .platform_data  = &dns323_button_data, },
 200 };
 201
 202 /****************************************************************************
 203  * General Setup
 204  */
 205
 206 static struct platform_device *dns323_plat_devices[] __initdata = {
 207         &dns323_nor_flash,
 208         &dns323_gpio_leds,
 209         &dns323_button_device,
 210 };
 211
 212 /*
 213  * On the DNS-323 the following devices are attached via I2C:
 214  *
 215  *  i2c addr | chip        | description
 216  *  0x3e     | GMT G760Af  | fan speed PWM controller
 217  *  0x48     | GMT G751-2f | temp. sensor and therm. watchdog (LM75 compatible)
 218  *  0x68     | ST M41T80   | RTC w/ alarm
 219  */
 220 static struct i2c_board_info __initdata dns323_i2c_devices[] = {
 221         {
 222                 I2C_BOARD_INFO("g760a", 0x3e),
 223                 .type = "g760a",
 224         },
 225 #if 0
 226         /* this entry requires the new-style driver model lm75 driver,
 227          * for the meantime "insmod lm75.ko force_lm75=0,0x48" is needed */
 228         {
 229                 I2C_BOARD_INFO("lm75", 0x48),
 230                 .type = "g751",
 231         },
 232 #endif
 233         {
 234                 I2C_BOARD_INFO("rtc-m41t80", 0x68),
 235                 .type = "m41t80",
 236         }
 237 };
 238
 239 /* DNS-323 specific power off method */
 240 static void dns323_power_off(void)
 241 {
 242         pr_info("%s: triggering power-off...\n", __func__);
 243         gpio_set_value(DNS323_GPIO_POWER_OFF, 1);
 244 }
 245
 246 static void __init dns323_init(void)
 247 {
 248         /* Setup basic Orion functions. Need to be called early. */
 249         orion5x_init();
 250
 251         /* setup flash mapping
 252          * CS3 holds a 8 MB Spansion S29GL064M90TFIR4
 253          */
 254         orion5x_setup_dev_boot_win(DNS323_NOR_BOOT_BASE, DNS323_NOR_BOOT_SIZE);
 255
 256         /* DNS-323 has a Marvell 88X7042 SATA controller attached via PCIE
 257          *
 258          * Open a special address decode windows for the PCIE WA.
 259          */
 260         orion5x_setup_pcie_wa_win(ORION5X_PCIE_WA_PHYS_BASE,
 261                                 ORION5X_PCIE_WA_SIZE);
 262
 263         /* set MPP to 0 as D-Link's 2.6.12.6 kernel did */
 264         orion5x_write(MPP_0_7_CTRL, 0);
 265         orion5x_write(MPP_8_15_CTRL, 0);
 266         orion5x_write(MPP_16_19_CTRL, 0);
 267         orion5x_write(MPP_DEV_CTRL, 0);
 268
 269         /* Define used GPIO pins
 270
 271           GPIO Map:
 272
 273           |  0 |     | PEX_RST_OUT (not controlled by GPIO)
 274           |  1 | Out | right amber LED (= sata ch0 LED)  (low-active)
 275           |  2 | Out | left  amber LED (= sata ch1 LED)  (low-active)
 276           |  3 | Out | //unknown//
 277           |  4 | Out | power button LED (low-active, together with pin #5)
 278           |  5 | Out | power button LED (low-active, together with pin #4)
 279           |  6 | In  | GMT G751-2f overtemp. shutdown signal (low-active)
 280           |  7 | In  | M41T80 nIRQ/OUT/SQW signal
 281           |  8 | Out | triggers power off (high-active)
 282           |  9 | In  | power button switch (low-active)
 283           | 10 | In  | reset button switch (low-active)
 284           | 11 | Out | //unknown//
 285           | 12 | Out | //unknown//
 286           | 13 | Out | //unknown//
 287           | 14 | Out | //unknown//
 288           | 15 | Out | //unknown//
 289         */
 290         orion5x_gpio_set_valid_pins(0x07f6);
 291
 292         /* register dns323 specific power-off method */
 293         if ((gpio_request(DNS323_GPIO_POWER_OFF, "POWEROFF") != 0)
 294             || (gpio_direction_output(DNS323_GPIO_POWER_OFF, 0) != 0))
 295                 pr_err("DNS323: failed to setup power-off GPIO\n");
 296
 297         pm_power_off = dns323_power_off;
 298
 299         /* register flash and other platform devices */
 300         platform_add_devices(dns323_plat_devices,
 301                              ARRAY_SIZE(dns323_plat_devices));
 302
 303         i2c_register_board_info(0, dns323_i2c_devices,
 304                                 ARRAY_SIZE(dns323_i2c_devices));
 305
 306         orion5x_eth_init(&dns323_eth_data);
 307 }
 308
 309 /* Warning: D-Link uses a wrong mach-type (=526) in their bootloader */
 310 MACHINE_START(DNS323, "D-Link DNS-323")
 311         /* Maintainer: Herbert Valerio Riedel <hvr@gnu.org> */
 312         .phys_io        = ORION5X_REGS_PHYS_BASE,
 313         .io_pg_offst    = ((ORION5X_REGS_VIRT_BASE) >> 18) & 0xFFFC,
 314         .boot_params    = 0x00000100,
 315         .init_machine   = dns323_init,
 316         .map_io         = orion5x_map_io,
 317         .init_irq       = orion5x_init_irq,
 318         .timer          = &orion5x_timer,
 319         .fixup          = tag_fixup_mem32,
 320 MACHINE_END