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dns323-setup.c

/*
 * arch/arm/mach-orion5x/dns323-setup.c
 *
 * Copyright (C) 2007 Herbert Valerio Riedel <hvr@gnu.org>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/pci.h>
#include <linux/irq.h>
#include <linux/mtd/physmap.h>
#include <linux/mv643xx_eth.h>
#include <linux/leds.h>
#include <linux/gpio_keys.h>
#include <linux/input.h>
#include <linux/i2c.h>
#include <asm/mach-types.h>
#include <asm/gpio.h>
#include <asm/mach/arch.h>
#include <asm/mach/pci.h>
#include <asm/arch/orion5x.h>
#include "common.h"

#define DNS323_GPIO_LED_RIGHT_AMBER 1
#define DNS323_GPIO_LED_LEFT_AMBER  2
#define DNS323_GPIO_LED_POWER       5
#define DNS323_GPIO_OVERTEMP        6
#define DNS323_GPIO_RTC             7
#define DNS323_GPIO_POWER_OFF       8
#define DNS323_GPIO_KEY_POWER       9
#define DNS323_GPIO_KEY_RESET       10

/****************************************************************************
 * PCI setup
 */

static int __init dns323_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
{
      int irq;

      /*
       * Check for devices with hard-wired IRQs.
       */
      irq = orion5x_pci_map_irq(dev, slot, pin);
      if (irq != -1)
            return irq;

      pr_err("%s: requested mapping for unknown device\n", __func__);

      return -1;
}

static struct hw_pci dns323_pci __initdata = {
      .nr_controllers = 2,
      .swizzle    = pci_std_swizzle,
      .setup            = orion5x_pci_sys_setup,
      .scan       = orion5x_pci_sys_scan_bus,
      .map_irq    = dns323_pci_map_irq,
};

static int __init dns323_pci_init(void)
{
      if (machine_is_dns323())
            pci_common_init(&dns323_pci);

      return 0;
}

subsys_initcall(dns323_pci_init);

/****************************************************************************
 * Ethernet
 */

static struct mv643xx_eth_platform_data dns323_eth_data = {
      .phy_addr = 8,
      .force_phy_addr = 1,
};

/****************************************************************************
 * 8MiB NOR flash (Spansion S29GL064M90TFIR4)
 *
 * Layout as used by D-Link:
 *  0x00000000-0x00010000 : "MTD1"
 *  0x00010000-0x00020000 : "MTD2"
 *  0x00020000-0x001a0000 : "Linux Kernel"
 *  0x001a0000-0x007d0000 : "File System"
 *  0x007d0000-0x00800000 : "u-boot"
 */

#define DNS323_NOR_BOOT_BASE 0xf4000000
#define DNS323_NOR_BOOT_SIZE SZ_8M

static struct mtd_partition dns323_partitions[] = {
      {
            .name = "MTD1",
            .size = 0x00010000,
            .offset     = 0,
      }, {
            .name = "MTD2",
            .size = 0x00010000,
            .offset = 0x00010000,
      }, {
            .name = "Linux Kernel",
            .size = 0x00180000,
            .offset     = 0x00020000,
      }, {
            .name = "File System",
            .size = 0x00630000,
            .offset     = 0x001A0000,
      }, {
            .name = "u-boot",
            .size = 0x00030000,
            .offset     = 0x007d0000,
      }
};

static struct physmap_flash_data dns323_nor_flash_data = {
      .width            = 1,
      .parts            = dns323_partitions,
      .nr_parts   = ARRAY_SIZE(dns323_partitions)
};

static struct resource dns323_nor_flash_resource = {
      .flags            = IORESOURCE_MEM,
      .start            = DNS323_NOR_BOOT_BASE,
      .end        = DNS323_NOR_BOOT_BASE + DNS323_NOR_BOOT_SIZE - 1,
};

static struct platform_device dns323_nor_flash = {
      .name       = "physmap-flash",
      .id         = 0,
      .dev        = { .platform_data = &dns323_nor_flash_data, },
      .resource   = &dns323_nor_flash_resource,
      .num_resources    = 1,
};

/****************************************************************************
 * GPIO LEDs (simple - doesn't use hardware blinking support)
 */

static struct gpio_led dns323_leds[] = {
      {
            .name = "power:blue",
            .gpio = DNS323_GPIO_LED_POWER,
            .active_low = 1,
      }, {
            .name = "right:amber",
            .gpio = DNS323_GPIO_LED_RIGHT_AMBER,
            .active_low = 1,
      }, {
            .name = "left:amber",
            .gpio = DNS323_GPIO_LED_LEFT_AMBER,
            .active_low = 1,
      },
};

static struct gpio_led_platform_data dns323_led_data = {
      .num_leds   = ARRAY_SIZE(dns323_leds),
      .leds       = dns323_leds,
};

static struct platform_device dns323_gpio_leds = {
      .name       = "leds-gpio",
      .id         = -1,
      .dev        = { .platform_data = &dns323_led_data, },
};

/****************************************************************************
 * GPIO Attached Keys
 */

static struct gpio_keys_button dns323_buttons[] = {
      {
            .code       = KEY_RESTART,
            .gpio       = DNS323_GPIO_KEY_RESET,
            .desc       = "Reset Button",
            .active_low = 1,
      },
      {
            .code       = KEY_POWER,
            .gpio       = DNS323_GPIO_KEY_POWER,
            .desc       = "Power Button",
            .active_low = 1,
      }
};

static struct gpio_keys_platform_data dns323_button_data = {
      .buttons    = dns323_buttons,
      .nbuttons       = ARRAY_SIZE(dns323_buttons),
};

static struct platform_device dns323_button_device = {
      .name       = "gpio-keys",
      .id         = -1,
      .num_resources    = 0,
      .dev        = { .platform_data  = &dns323_button_data, },
};

/****************************************************************************
 * General Setup
 */

static struct platform_device *dns323_plat_devices[] __initdata = {
      &dns323_nor_flash,
      &dns323_gpio_leds,
      &dns323_button_device,
};

/*
 * On the DNS-323 the following devices are attached via I2C:
 *
 *  i2c addr | chip        | description
 *  0x3e     | GMT G760Af  | fan speed PWM controller
 *  0x48     | GMT G751-2f | temp. sensor and therm. watchdog (LM75 compatible)
 *  0x68     | ST M41T80   | RTC w/ alarm
 */
static struct i2c_board_info __initdata dns323_i2c_devices[] = {
      {
            I2C_BOARD_INFO("g760a", 0x3e),
      },
#if 0
      /* this entry requires the new-style driver model lm75 driver,
       * for the meantime "insmod lm75.ko force_lm75=0,0x48" is needed */
      {
            I2C_BOARD_INFO("g751", 0x48),
      },
#endif
      {
            I2C_BOARD_INFO("m41t80", 0x68),
      }
};

/* DNS-323 specific power off method */
static void dns323_power_off(void)
{
      pr_info("%s: triggering power-off...\n", __func__);
      gpio_set_value(DNS323_GPIO_POWER_OFF, 1);
}

static void __init dns323_init(void)
{
      /* Setup basic Orion functions. Need to be called early. */
      orion5x_init();

      /* setup flash mapping
       * CS3 holds a 8 MB Spansion S29GL064M90TFIR4
       */
      orion5x_setup_dev_boot_win(DNS323_NOR_BOOT_BASE, DNS323_NOR_BOOT_SIZE);

      /* DNS-323 has a Marvell 88X7042 SATA controller attached via PCIe
       *
       * Open a special address decode windows for the PCIe WA.
       */
      orion5x_setup_pcie_wa_win(ORION5X_PCIE_WA_PHYS_BASE,
                        ORION5X_PCIE_WA_SIZE);

      /* set MPP to 0 as D-Link's 2.6.12.6 kernel did */
      orion5x_write(MPP_0_7_CTRL, 0);
      orion5x_write(MPP_8_15_CTRL, 0);
      orion5x_write(MPP_16_19_CTRL, 0);
      orion5x_write(MPP_DEV_CTRL, 0);

      /* Define used GPIO pins

        GPIO Map:

        |  0 |     | PEX_RST_OUT (not controlled by GPIO)
        |  1 | Out | right amber LED (= sata ch0 LED)  (low-active)
        |  2 | Out | left  amber LED (= sata ch1 LED)  (low-active)
        |  3 | Out | //unknown//
        |  4 | Out | power button LED (low-active, together with pin #5)
        |  5 | Out | power button LED (low-active, together with pin #4)
        |  6 | In  | GMT G751-2f overtemp. shutdown signal (low-active)
        |  7 | In  | M41T80 nIRQ/OUT/SQW signal
        |  8 | Out | triggers power off (high-active)
        |  9 | In  | power button switch (low-active)
        | 10 | In  | reset button switch (low-active)
        | 11 | Out | //unknown//
        | 12 | Out | //unknown//
        | 13 | Out | //unknown//
        | 14 | Out | //unknown//
        | 15 | Out | //unknown//
      */
      orion5x_gpio_set_valid_pins(0x07f6);

      /* register dns323 specific power-off method */
      if ((gpio_request(DNS323_GPIO_POWER_OFF, "POWEROFF") != 0)
          || (gpio_direction_output(DNS323_GPIO_POWER_OFF, 0) != 0))
            pr_err("DNS323: failed to setup power-off GPIO\n");

      pm_power_off = dns323_power_off;

      /* register flash and other platform devices */
      platform_add_devices(dns323_plat_devices,
                       ARRAY_SIZE(dns323_plat_devices));

      i2c_register_board_info(0, dns323_i2c_devices,
                        ARRAY_SIZE(dns323_i2c_devices));

      orion5x_eth_init(&dns323_eth_data);
}

/* Warning: D-Link uses a wrong mach-type (=526) in their bootloader */
MACHINE_START(DNS323, "D-Link DNS-323")
      /* Maintainer: Herbert Valerio Riedel <hvr@gnu.org> */
      .phys_io    = ORION5X_REGS_PHYS_BASE,
      .io_pg_offst      = ((ORION5X_REGS_VIRT_BASE) >> 18) & 0xFFFC,
      .boot_params      = 0x00000100,
      .init_machine     = dns323_init,
      .map_io           = orion5x_map_io,
      .init_irq   = orion5x_init_irq,
      .timer            = &orion5x_timer,
      .fixup            = tag_fixup_mem32,
MACHINE_END

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