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d2net-setup.c

/*
 * arch/arm/mach-orion5x/d2net-setup.c
 *
 * LaCie d2Network and Big Disk Network NAS setup
 *
 * Copyright (C) 2009 Simon Guinot <sguinot@lacie.com>
 *
 * 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.
 */

#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"

/*****************************************************************************
 * LaCie d2 Network Info
 ****************************************************************************/

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

#define D2NET_NOR_BOOT_BASE         0xfff80000
#define D2NET_NOR_BOOT_SIZE         SZ_512K

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

/*
 * TODO: Check write support on flash MX29LV400CBTC-70G
 */

static struct mtd_partition d2net_partitions[] = {
      {
            .name       = "Full512kb",
            .size       = MTDPART_SIZ_FULL,
            .offset           = 0,
            .mask_flags = MTD_WRITEABLE,
      },
};

static struct physmap_flash_data d2net_nor_flash_data = {
      .width            = 1,
      .parts            = d2net_partitions,
      .nr_parts   = ARRAY_SIZE(d2net_partitions),
};

static struct resource d2net_nor_flash_resource = {
      .flags                  = IORESOURCE_MEM,
      .start                  = D2NET_NOR_BOOT_BASE,
      .end              = D2NET_NOR_BOOT_BASE
                              + D2NET_NOR_BOOT_SIZE - 1,
};

static struct platform_device d2net_nor_flash = {
      .name             = "physmap-flash",
      .id               = 0,
      .dev        = {
            .platform_data    = &d2net_nor_flash_data,
      },
      .num_resources          = 1,
      .resource         = &d2net_nor_flash_resource,
};

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

static struct mv643xx_eth_platform_data d2net_eth_data = {
      .phy_addr   = MV643XX_ETH_PHY_ADDR(8),
};

/*****************************************************************************
 * I2C devices
 ****************************************************************************/

/*
 * i2c addr | chip         | description
 * 0x32     | Ricoh 5C372b | RTC
 * 0x3e     | GMT G762     | PWM fan controller
 * 0x50     | HT24LC08     | eeprom (1kB)
 *
 * TODO: Add G762 support to the g760a driver.
 */
static struct i2c_board_info __initdata d2net_i2c_devices[] = {
      {
            I2C_BOARD_INFO("rs5c372b", 0x32),
      }, {
            I2C_BOARD_INFO("24c08", 0x50),
      },
};

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

static struct mv_sata_platform_data d2net_sata_data = {
      .n_ports    = 2,
};

#define D2NET_GPIO_SATA0_POWER      3
#define D2NET_GPIO_SATA1_POWER      12

static void __init d2net_sata_power_init(void)
{
      int err;

      err = gpio_request(D2NET_GPIO_SATA0_POWER, "SATA0 power");
      if (err == 0) {
            err = gpio_direction_output(D2NET_GPIO_SATA0_POWER, 1);
            if (err)
                  gpio_free(D2NET_GPIO_SATA0_POWER);
      }
      if (err)
            pr_err("d2net: failed to configure SATA0 power GPIO\n");

      err = gpio_request(D2NET_GPIO_SATA1_POWER, "SATA1 power");
      if (err == 0) {
            err = gpio_direction_output(D2NET_GPIO_SATA1_POWER, 1);
            if (err)
                  gpio_free(D2NET_GPIO_SATA1_POWER);
      }
      if (err)
            pr_err("d2net: failed to configure SATA1 power GPIO\n");
}

/*****************************************************************************
 * GPIO LED's
 ****************************************************************************/

/*
 * The blue front LED is wired to the CPLD and can blink in relation with the
 * SATA activity. This feature is disabled to make this LED compatible with
 * the leds-gpio driver: MPP14 and MPP15 are configured to act like output
 * GPIO's and have to stay in an active state. This is needed to set the blue
 * LED in a "fix on" state regardless of the SATA activity.
 *
 * The following array detail the different LED registers and the combination
 * of their possible values:
 *
 * led_off   | blink_ctrl | SATA active | LED state
 *           |            |             |
 *    1      |     x      |      x      |  off
 *    0      |     0      |      0      |  off
 *    0      |     1      |      0      |  blink (rate 300ms)
 *    0      |     x      |      1      |  on
 *
 * Notes: The blue and the red front LED's can't be on at the same time.
 *        Red LED have priority.
 */

#define D2NET_GPIO_RED_LED          6
#define D2NET_GPIO_BLUE_LED_BLINK_CTRL    16
#define D2NET_GPIO_BLUE_LED_OFF           23
#define D2NET_GPIO_SATA0_ACT        14
#define D2NET_GPIO_SATA1_ACT        15

static struct gpio_led d2net_leds[] = {
      {
            .name = "d2net:blue:power",
            .gpio = D2NET_GPIO_BLUE_LED_OFF,
            .active_low = 1,
      },
      {
            .name = "d2net:red:fail",
            .gpio = D2NET_GPIO_RED_LED,
      },
};

static struct gpio_led_platform_data d2net_led_data = {
      .num_leds = ARRAY_SIZE(d2net_leds),
      .leds = d2net_leds,
};

static struct platform_device d2net_gpio_leds = {
      .name           = "leds-gpio",
      .id             = -1,
      .dev            = {
            .platform_data  = &d2net_led_data,
      },
};

static void __init d2net_gpio_leds_init(void)
{
      /* Configure GPIO over MPP max number. */
      orion_gpio_set_valid(D2NET_GPIO_BLUE_LED_OFF, 1);

      if (gpio_request(D2NET_GPIO_SATA0_ACT, "LED SATA0 activity") != 0)
            return;
      if (gpio_direction_output(D2NET_GPIO_SATA0_ACT, 1) != 0)
            goto err_free_1;
      if (gpio_request(D2NET_GPIO_SATA1_ACT, "LED SATA1 activity") != 0)
            goto err_free_1;
      if (gpio_direction_output(D2NET_GPIO_SATA1_ACT, 1) != 0)
            goto err_free_2;
      platform_device_register(&d2net_gpio_leds);
      return;

err_free_2:
      gpio_free(D2NET_GPIO_SATA1_ACT);
err_free_1:
      gpio_free(D2NET_GPIO_SATA0_ACT);
      return;
}

/****************************************************************************
 * GPIO keys
 ****************************************************************************/

#define D2NET_GPIO_PUSH_BUTTON            18
#define D2NET_GPIO_POWER_SWITCH_ON  8
#define D2NET_GPIO_POWER_SWITCH_OFF 9

#define D2NET_SWITCH_POWER_ON       0x1
#define D2NET_SWITCH_POWER_OFF            0x2

static struct gpio_keys_button d2net_buttons[] = {
      {
            .type       = EV_SW,
            .code       = D2NET_SWITCH_POWER_OFF,
            .gpio       = D2NET_GPIO_POWER_SWITCH_OFF,
            .desc       = "Power rocker switch (auto|off)",
            .active_low = 0,
      },
      {
            .type       = EV_SW,
            .code       = D2NET_SWITCH_POWER_ON,
            .gpio       = D2NET_GPIO_POWER_SWITCH_ON,
            .desc       = "Power rocker switch (on|auto)",
            .active_low = 0,
      },
      {
            .type       = EV_KEY,
            .code       = KEY_POWER,
            .gpio       = D2NET_GPIO_PUSH_BUTTON,
            .desc       = "Front Push Button",
            .active_low = 0,
      },
};

static struct gpio_keys_platform_data d2net_button_data = {
      .buttons    = d2net_buttons,
      .nbuttons   = ARRAY_SIZE(d2net_buttons),
};

static struct platform_device d2net_gpio_buttons = {
      .name       = "gpio-keys",
      .id         = -1,
      .dev        = {
            .platform_data    = &d2net_button_data,
      },
};

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

static struct orion5x_mpp_mode d2net_mpp_modes[] __initdata = {
      {  0, MPP_GPIO }, /* Board ID (bit 0) */
      {  1, MPP_GPIO }, /* Board ID (bit 1) */
      {  2, MPP_GPIO }, /* Board ID (bit 2) */
      {  3, MPP_GPIO }, /* SATA 0 power */
      {  4, MPP_UNUSED },
      {  5, MPP_GPIO }, /* Fan fail detection */
      {  6, MPP_GPIO }, /* Red front LED */
      {  7, MPP_UNUSED },
      {  8, MPP_GPIO }, /* Rear power switch (on|auto) */
      {  9, MPP_GPIO }, /* Rear power switch (auto|off) */
      { 10, MPP_UNUSED },
      { 11, MPP_UNUSED },
      { 12, MPP_GPIO }, /* SATA 1 power */
      { 13, MPP_UNUSED },
      { 14, MPP_GPIO }, /* SATA 0 active */
      { 15, MPP_GPIO }, /* SATA 1 active */
      { 16, MPP_GPIO }, /* Blue front LED blink control */
      { 17, MPP_UNUSED },
      { 18, MPP_GPIO }, /* Front button (0 = Released, 1 = Pushed ) */
      { 19, MPP_UNUSED },
      { -1 }
      /* 22: USB port 1 fuse (0 = Fail, 1 = Ok) */
      /* 23: Blue front LED off */
      /* 24: Inhibit board power off (0 = Disabled, 1 = Enabled) */
};

static void __init d2net_init(void)
{
      /*
       * Setup basic Orion functions. Need to be called early.
       */
      orion5x_init();

      orion5x_mpp_conf(d2net_mpp_modes);

      /*
       * Configure peripherals.
       */
      orion5x_ehci0_init();
      orion5x_eth_init(&d2net_eth_data);
      orion5x_i2c_init();
      orion5x_uart0_init();

      d2net_sata_power_init();
      orion5x_sata_init(&d2net_sata_data);

      orion5x_setup_dev_boot_win(D2NET_NOR_BOOT_BASE,
                        D2NET_NOR_BOOT_SIZE);
      platform_device_register(&d2net_nor_flash);

      platform_device_register(&d2net_gpio_buttons);

      d2net_gpio_leds_init();

      pr_notice("d2net: Flash write are not yet supported.\n");

      i2c_register_board_info(0, d2net_i2c_devices,
                        ARRAY_SIZE(d2net_i2c_devices));
}

/* Warning: LaCie use a wrong mach-type (0x20e=526) in their bootloader. */

#ifdef CONFIG_MACH_D2NET
MACHINE_START(D2NET, "LaCie d2 Network")
      .phys_io    = ORION5X_REGS_PHYS_BASE,
      .io_pg_offst      = ((ORION5X_REGS_VIRT_BASE) >> 18) & 0xFFFC,
      .boot_params      = 0x00000100,
      .init_machine     = d2net_init,
      .map_io           = orion5x_map_io,
      .init_irq   = orion5x_init_irq,
      .timer            = &orion5x_timer,
      .fixup            = tag_fixup_mem32,
MACHINE_END
#endif

#ifdef CONFIG_MACH_BIGDISK
MACHINE_START(BIGDISK, "LaCie Big Disk Network")
      .phys_io    = ORION5X_REGS_PHYS_BASE,
      .io_pg_offst      = ((ORION5X_REGS_VIRT_BASE) >> 18) & 0xFFFC,
      .boot_params      = 0x00000100,
      .init_machine     = d2net_init,
      .map_io           = orion5x_map_io,
      .init_irq   = orion5x_init_irq,
      .timer            = &orion5x_timer,
      .fixup            = tag_fixup_mem32,
MACHINE_END
#endif


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