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edmini_v2-setup.c

/*
 * arch/arm/mach-orion5x/edmini_v2-setup.c
 *
 * LaCie Ethernet Disk mini V2 Setup
 *
 * Copyright (C) 2008 Christopher Moore <moore@free.fr>
 * Copyright (C) 2008 Albert Aribaud <albert.aribaud@free.fr>
 *
 * This file is licensed under the terms of the GNU General Public
 * License version 2. This program is licensed "as is" without any
 * warranty of any kind, whether express or implied.
 */

/*
 * TODO: add Orion USB device port init when kernel.org support is added.
 * TODO: add flash write support: see below.
 * TODO: add power-off support.
 * TODO: add I2C EEPROM support.
 */

#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"

/*****************************************************************************
 * EDMINI_V2 Info
 ****************************************************************************/

/*
 * 512KB NOR flash Device bus boot chip select
 */

#define EDMINI_V2_NOR_BOOT_BASE           0xfff80000
#define EDMINI_V2_NOR_BOOT_SIZE           SZ_512K

/*****************************************************************************
 * 512KB NOR Flash on BOOT Device
 ****************************************************************************/

/*
 * Currently the MTD code does not recognize the MX29LV400CBCT as a bottom
 * -type device. This could cause risks of accidentally erasing critical
 * flash sectors. We thus define a single, write-protected partition covering
 * the whole flash.
 * TODO: once the flash part TOP/BOTTOM detection issue is sorted out in the MTD
 * code, break this into at least three partitions: 'u-boot code', 'u-boot
 * environment' and 'whatever is left'.
 */

static struct mtd_partition edmini_v2_partitions[] = {
      {
            .name       = "Full512kb",
            .size       = 0x00080000,
            .offset           = 0x00000000,
            .mask_flags = MTD_WRITEABLE,
      },
};

static struct physmap_flash_data edmini_v2_nor_flash_data = {
      .width            = 1,
      .parts            = edmini_v2_partitions,
      .nr_parts   = ARRAY_SIZE(edmini_v2_partitions),
};

static struct resource edmini_v2_nor_flash_resource = {
      .flags                  = IORESOURCE_MEM,
      .start                  = EDMINI_V2_NOR_BOOT_BASE,
      .end              = EDMINI_V2_NOR_BOOT_BASE
            + EDMINI_V2_NOR_BOOT_SIZE - 1,
};

static struct platform_device edmini_v2_nor_flash = {
      .name             = "physmap-flash",
      .id               = 0,
      .dev        = {
            .platform_data    = &edmini_v2_nor_flash_data,
      },
      .num_resources          = 1,
      .resource         = &edmini_v2_nor_flash_resource,
};

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

static struct mv643xx_eth_platform_data edmini_v2_eth_data = {
      .phy_addr   = 8,
};

/*****************************************************************************
 * RTC 5C372a on I2C bus
 ****************************************************************************/

#define EDMINIV2_RTC_GPIO     3

static struct i2c_board_info __initdata edmini_v2_i2c_rtc = {
      I2C_BOARD_INFO("rs5c372a", 0x32),
      .irq = 0,
};

/*****************************************************************************
 * Sata
 ****************************************************************************/

static struct mv_sata_platform_data edmini_v2_sata_data = {
      .n_ports    = 2,
};

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

#define EDMINI_V2_GPIO_LED_POWER    16

static struct gpio_led edmini_v2_leds[] = {
      {
            .name = "power:blue",
            .gpio = EDMINI_V2_GPIO_LED_POWER,
            .active_low = 1,
      },
};

static struct gpio_led_platform_data edmini_v2_led_data = {
      .num_leds = ARRAY_SIZE(edmini_v2_leds),
      .leds = edmini_v2_leds,
};

static struct platform_device edmini_v2_gpio_leds = {
      .name           = "leds-gpio",
      .id             = -1,
      .dev            = {
            .platform_data  = &edmini_v2_led_data,
      },
};

/****************************************************************************
 * GPIO key
 ****************************************************************************/

#define EDMINI_V2_GPIO_KEY_POWER    18

static struct gpio_keys_button edmini_v2_buttons[] = {
      {
            .code       = KEY_POWER,
            .gpio       = EDMINI_V2_GPIO_KEY_POWER,
            .desc       = "Power Button",
            .active_low = 0,
      },
};

static struct gpio_keys_platform_data edmini_v2_button_data = {
      .buttons    = edmini_v2_buttons,
      .nbuttons   = ARRAY_SIZE(edmini_v2_buttons),
};

static struct platform_device edmini_v2_gpio_buttons = {
      .name       = "gpio-keys",
      .id         = -1,
      .dev        = {
            .platform_data    = &edmini_v2_button_data,
      },
};

/*****************************************************************************
 * General Setup
 ****************************************************************************/
static struct orion5x_mpp_mode edminiv2_mpp_modes[] __initdata = {
      {  0, MPP_UNUSED },
      {  1, MPP_UNUSED },
      {  2, MPP_UNUSED },
      {  3, MPP_GPIO }, /* RTC interrupt */
      {  4, MPP_UNUSED },
      {  5, MPP_UNUSED },
      {  6, MPP_UNUSED },
      {  7, MPP_UNUSED },
      {  8, MPP_UNUSED },
      {  9, MPP_UNUSED },
      { 10, MPP_UNUSED },
      { 11, MPP_UNUSED },
      { 12, MPP_SATA_LED },   /* SATA 0 presence */
      { 13, MPP_SATA_LED },   /* SATA 1 presence */
      { 14, MPP_SATA_LED },   /* SATA 0 active */
      { 15, MPP_SATA_LED },   /* SATA 1 active */
      /* 16: Power LED control (0 = On, 1 = Off) */
      { 16, MPP_GPIO },
      /* 17: Power LED control select (0 = CPLD, 1 = GPIO16) */
      { 17, MPP_GPIO },
      /* 18: Power button status (0 = Released, 1 = Pressed) */
      { 18, MPP_GPIO },
      { 19, MPP_UNUSED },
      { -1 }
};

static void __init edmini_v2_init(void)
{
      /*
       * Setup basic Orion functions. Need to be called early.
       */
      orion5x_init();

      orion5x_mpp_conf(edminiv2_mpp_modes);

      /*
       * Configure peripherals.
       */
      orion5x_ehci0_init();
      orion5x_eth_init(&edmini_v2_eth_data);
      orion5x_i2c_init();
      orion5x_sata_init(&edmini_v2_sata_data);
      orion5x_uart0_init();

      orion5x_setup_dev_boot_win(EDMINI_V2_NOR_BOOT_BASE,
                        EDMINI_V2_NOR_BOOT_SIZE);
      platform_device_register(&edmini_v2_nor_flash);
      platform_device_register(&edmini_v2_gpio_leds);
      platform_device_register(&edmini_v2_gpio_buttons);

      pr_notice("edmini_v2: USB device port, flash write and power-off "
              "are not yet supported.\n");

      /* Get RTC IRQ and register the chip */
      if (gpio_request(EDMINIV2_RTC_GPIO, "rtc") == 0) {
            if (gpio_direction_input(EDMINIV2_RTC_GPIO) == 0)
                  edmini_v2_i2c_rtc.irq = gpio_to_irq(EDMINIV2_RTC_GPIO);
            else
                  gpio_free(EDMINIV2_RTC_GPIO);
      }

      if (edmini_v2_i2c_rtc.irq == 0)
            pr_warning("edmini_v2: failed to get RTC IRQ\n");

      i2c_register_board_info(0, &edmini_v2_i2c_rtc, 1);
}

/* Warning: LaCie use a wrong mach-type (0x20e=526) in their bootloader. */
MACHINE_START(EDMINI_V2, "LaCie Ethernet Disk mini V2")
      /* Maintainer: Christopher Moore <moore@free.fr> */
      .boot_params      = 0x00000100,
      .init_machine     = edmini_v2_init,
      .map_io           = orion5x_map_io,
      .init_irq   = orion5x_init_irq,
      .timer            = &orion5x_timer,
      .fixup            = tag_fixup_mem32,
MACHINE_END

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