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mss2-setup.c

/*
 * Maxtor Shared Storage II Board Setup
 *
 * Maintainer: Sylver Bruneau <sylver.bruneau@googlemail.com>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU 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 <linux/ata_platform.h>
#include <linux/gpio.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/pci.h>
#include <mach/orion5x.h>
#include "common.h"
#include "mpp.h"

#define MSS2_NOR_BOOT_BASE    0xff800000
#define MSS2_NOR_BOOT_SIZE    SZ_256K

/*****************************************************************************
 * Maxtor Shared Storage II Info
 ****************************************************************************/

/*
 * Maxtor Shared Storage II hardware :
 * - Marvell 88F5182-A2 C500
 * - Marvell 88E1111 Gigabit Ethernet PHY
 * - RTC M41T81 (@0x68) on I2C bus
 * - 256KB NOR flash
 * - 64MB of RAM
 */

/*****************************************************************************
 * 256KB NOR Flash on BOOT Device
 ****************************************************************************/

static struct physmap_flash_data mss2_nor_flash_data = {
      .width            = 1,
};

static struct resource mss2_nor_flash_resource = {
      .flags            = IORESOURCE_MEM,
      .start            = MSS2_NOR_BOOT_BASE,
      .end        = MSS2_NOR_BOOT_BASE + MSS2_NOR_BOOT_SIZE - 1,
};

static struct platform_device mss2_nor_flash = {
      .name       = "physmap-flash",
      .id         = 0,
      .dev        = {
            .platform_data    = &mss2_nor_flash_data,
      },
      .resource   = &mss2_nor_flash_resource,
      .num_resources    = 1,
};

/****************************************************************************
 * PCI setup
 ****************************************************************************/
static int __init mss2_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;

      return -1;
}

static struct hw_pci mss2_pci __initdata = {
      .nr_controllers = 2,
      .swizzle    = pci_std_swizzle,
      .setup            = orion5x_pci_sys_setup,
      .scan       = orion5x_pci_sys_scan_bus,
      .map_irq    = mss2_pci_map_irq,
};

static int __init mss2_pci_init(void)
{
      if (machine_is_mss2())
            pci_common_init(&mss2_pci);

      return 0;
}
subsys_initcall(mss2_pci_init);


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

static struct mv643xx_eth_platform_data mss2_eth_data = {
      .phy_addr   = MV643XX_ETH_PHY_ADDR(8),
};

/*****************************************************************************
 * SATA
 ****************************************************************************/

static struct mv_sata_platform_data mss2_sata_data = {
      .n_ports    = 2,
};

/*****************************************************************************
 * GPIO buttons
 ****************************************************************************/

#define MSS2_GPIO_KEY_RESET   12
#define MSS2_GPIO_KEY_POWER   11

static struct gpio_keys_button mss2_buttons[] = {
      {
            .code       = KEY_POWER,
            .gpio       = MSS2_GPIO_KEY_POWER,
            .desc       = "Power",
            .active_low = 1,
      }, {
            .code       = KEY_RESTART,
            .gpio       = MSS2_GPIO_KEY_RESET,
            .desc       = "Reset",
            .active_low = 1,
      },
};

static struct gpio_keys_platform_data mss2_button_data = {
      .buttons    = mss2_buttons,
      .nbuttons   = ARRAY_SIZE(mss2_buttons),
};

static struct platform_device mss2_button_device = {
      .name       = "gpio-keys",
      .id         = -1,
      .dev        = {
            .platform_data    = &mss2_button_data,
      },
};

/*****************************************************************************
 * RTC m41t81 on I2C bus
 ****************************************************************************/

#define MSS2_GPIO_RTC_IRQ     3

static struct i2c_board_info __initdata mss2_i2c_rtc = {
      I2C_BOARD_INFO("m41t81", 0x68),
};

/*****************************************************************************
 * MSS2 power off method
 ****************************************************************************/
/*
 * On the Maxtor Shared Storage II, the shutdown process is the following :
 * - Userland modifies U-boot env to tell U-boot to go idle at next boot
 * - The board reboots
 * - U-boot starts and go into an idle mode until the user press "power"
 */
static void mss2_power_off(void)
{
      u32 reg;

      /*
       * Enable and issue soft reset
       */
      reg = readl(CPU_RESET_MASK);
      reg |= 1 << 2;
      writel(reg, CPU_RESET_MASK);

      reg = readl(CPU_SOFT_RESET);
      reg |= 1;
      writel(reg, CPU_SOFT_RESET);
}

/****************************************************************************
 * General Setup
 ****************************************************************************/
static struct orion5x_mpp_mode mss2_mpp_modes[] __initdata = {
      {  0, MPP_GPIO },       /* Power LED */
      {  1, MPP_GPIO },       /* Error LED */
      {  2, MPP_UNUSED },
      {  3, MPP_GPIO },       /* RTC interrupt */
      {  4, MPP_GPIO },       /* HDD ind. (Single/Dual)*/
      {  5, MPP_GPIO },       /* HD0 5V control */
      {  6, MPP_GPIO },       /* HD0 12V control */
      {  7, MPP_GPIO },       /* HD1 5V control */
      {  8, MPP_GPIO },       /* HD1 12V control */
      {  9, MPP_UNUSED },
      { 10, MPP_GPIO },       /* Fan control */
      { 11, MPP_GPIO },       /* Power button */
      { 12, MPP_GPIO },       /* Reset button */
      { 13, MPP_UNUSED },
      { 14, MPP_SATA_LED },         /* SATA 0 active */
      { 15, MPP_SATA_LED },         /* SATA 1 active */
      { 16, MPP_UNUSED },
      { 17, MPP_UNUSED },
      { 18, MPP_UNUSED },
      { 19, MPP_UNUSED },
      { -1 },
};

static void __init mss2_init(void)
{
      /* Setup basic Orion functions. Need to be called early. */
      orion5x_init();

      orion5x_mpp_conf(mss2_mpp_modes);

      /*
       * MPP[20] Unused
       * MPP[21] PCI clock
       * MPP[22] USB 0 over current
       * MPP[23] USB 1 over current
       */

      /*
       * Configure peripherals.
       */
      orion5x_ehci0_init();
      orion5x_ehci1_init();
      orion5x_eth_init(&mss2_eth_data);
      orion5x_i2c_init();
      orion5x_sata_init(&mss2_sata_data);
      orion5x_uart0_init();
      orion5x_xor_init();

      orion5x_setup_dev_boot_win(MSS2_NOR_BOOT_BASE, MSS2_NOR_BOOT_SIZE);
      platform_device_register(&mss2_nor_flash);

      platform_device_register(&mss2_button_device);

      if (gpio_request(MSS2_GPIO_RTC_IRQ, "rtc") == 0) {
            if (gpio_direction_input(MSS2_GPIO_RTC_IRQ) == 0)
                  mss2_i2c_rtc.irq = gpio_to_irq(MSS2_GPIO_RTC_IRQ);
            else
                  gpio_free(MSS2_GPIO_RTC_IRQ);
      }
      i2c_register_board_info(0, &mss2_i2c_rtc, 1);

      /* register mss2 specific power-off method */
      pm_power_off = mss2_power_off;
}

MACHINE_START(MSS2, "Maxtor Shared Storage II")
      /* Maintainer: Sylver Bruneau <sylver.bruneau@googlemail.com> */
      .phys_io    = ORION5X_REGS_PHYS_BASE,
      .io_pg_offst      = ((ORION5X_REGS_VIRT_BASE) >> 18) & 0xFFFC,
      .boot_params      = 0x00000100,
      .init_machine     = mss2_init,
      .map_io           = orion5x_map_io,
      .init_irq   = orion5x_init_irq,
      .timer            = &orion5x_timer,
      .fixup            = tag_fixup_mem32
MACHINE_END

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