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net2big-setup.c

/*
 * arch/arm/mach-orion5x/net2big-setup.c
 *
 * LaCie 2Big 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/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 <linux/delay.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <mach/orion5x.h>
#include "common.h"
#include "mpp.h"

/*****************************************************************************
 * LaCie 2Big Network Info
 ****************************************************************************/

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

#define NET2BIG_NOR_BOOT_BASE       0xfff80000
#define NET2BIG_NOR_BOOT_SIZE       SZ_512K

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

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

static struct mtd_partition net2big_partitions[] = {
      {
            .name       = "Full512kb",
            .size       = MTDPART_SIZ_FULL,
            .offset           = 0x00000000,
            .mask_flags = MTD_WRITEABLE,
      },
};

static struct physmap_flash_data net2big_nor_flash_data = {
      .width            = 1,
      .parts            = net2big_partitions,
      .nr_parts   = ARRAY_SIZE(net2big_partitions),
};

static struct resource net2big_nor_flash_resource = {
      .flags                  = IORESOURCE_MEM,
      .start                  = NET2BIG_NOR_BOOT_BASE,
      .end              = NET2BIG_NOR_BOOT_BASE
                              + NET2BIG_NOR_BOOT_SIZE - 1,
};

static struct platform_device net2big_nor_flash = {
      .name             = "physmap-flash",
      .id               = 0,
      .dev        = {
            .platform_data    = &net2big_nor_flash_data,
      },
      .num_resources          = 1,
      .resource         = &net2big_nor_flash_resource,
};

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

static struct mv643xx_eth_platform_data net2big_eth_data = {
      .phy_addr   = MV643XX_ETH_PHY_ADDR(8),
};

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

/*
 * i2c addr | chip         | description
 * 0x32     | Ricoh 5C372b | RTC
 * 0x50     | HT24LC08     | eeprom (1kB)
 */
static struct i2c_board_info __initdata net2big_i2c_devices[] = {
      {
            I2C_BOARD_INFO("rs5c372b", 0x32),
      }, {
            I2C_BOARD_INFO("24c08", 0x50),
      },
};

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

static struct mv_sata_platform_data net2big_sata_data = {
      .n_ports    = 2,
};

#define NET2BIG_GPIO_SATA_POWER_REQ 19
#define NET2BIG_GPIO_SATA0_POWER    23
#define NET2BIG_GPIO_SATA1_POWER    25

static void __init net2big_sata_power_init(void)
{
      int err;

      /* Configure GPIOs over MPP max number. */
      orion_gpio_set_valid(NET2BIG_GPIO_SATA0_POWER, 1);
      orion_gpio_set_valid(NET2BIG_GPIO_SATA1_POWER, 1);

      err = gpio_request(NET2BIG_GPIO_SATA0_POWER, "SATA0 power status");
      if (err == 0) {
            err = gpio_direction_input(NET2BIG_GPIO_SATA0_POWER);
            if (err)
                  gpio_free(NET2BIG_GPIO_SATA0_POWER);
      }
      if (err) {
            pr_err("net2big: failed to setup SATA0 power GPIO\n");
            return;
      }

      err = gpio_request(NET2BIG_GPIO_SATA1_POWER, "SATA1 power status");
      if (err == 0) {
            err = gpio_direction_input(NET2BIG_GPIO_SATA1_POWER);
            if (err)
                  gpio_free(NET2BIG_GPIO_SATA1_POWER);
      }
      if (err) {
            pr_err("net2big: failed to setup SATA1 power GPIO\n");
            goto err_free_1;
      }

      err = gpio_request(NET2BIG_GPIO_SATA_POWER_REQ, "SATA power request");
      if (err == 0) {
            err = gpio_direction_output(NET2BIG_GPIO_SATA_POWER_REQ, 0);
            if (err)
                  gpio_free(NET2BIG_GPIO_SATA_POWER_REQ);
      }
      if (err) {
            pr_err("net2big: failed to setup SATA power request GPIO\n");
            goto err_free_2;
      }

      if (gpio_get_value(NET2BIG_GPIO_SATA0_POWER) &&
            gpio_get_value(NET2BIG_GPIO_SATA1_POWER)) {
            return;
      }

      /*
       * SATA power up on both disk is done by pulling high the CPLD power
       * request line. The 300ms delay is related to the CPLD clock and is
       * needed to be sure that the CPLD has take into account the low line
       * status.
       */
      msleep(300);
      gpio_set_value(NET2BIG_GPIO_SATA_POWER_REQ, 1);
      pr_info("net2big: power up SATA hard disks\n");

      return;

err_free_2:
      gpio_free(NET2BIG_GPIO_SATA1_POWER);
err_free_1:
      gpio_free(NET2BIG_GPIO_SATA0_POWER);

      return;
}

/*****************************************************************************
 * GPIO LEDs
 ****************************************************************************/

/*
 * The power front LEDs (blue and red) and SATA red LEDs are controlled via a
 * single GPIO line and are compatible with the leds-gpio driver.
 *
 * The SATA blue LEDs have some hardware blink capabilities which are detailled
 * in the following array:
 *
 * SATAx blue LED | SATAx activity | LED state
 *                |                |
 *       0        |       0        |  blink (rate 300ms)
 *       1        |       0        |  off
 *       ?        |       1        |  on
 *
 * Notes: The blue and the red front LED's can't be on at the same time.
 *        Blue LED have priority.
 */

#define NET2BIG_GPIO_PWR_RED_LED    6
#define NET2BIG_GPIO_PWR_BLUE_LED   16
#define NET2BIG_GPIO_PWR_LED_BLINK_STOP   7

#define NET2BIG_GPIO_SATA0_RED_LED  11
#define NET2BIG_GPIO_SATA1_RED_LED  10

#define NET2BIG_GPIO_SATA0_BLUE_LED 17
#define NET2BIG_GPIO_SATA1_BLUE_LED 13

static struct gpio_led net2big_leds[] = {
      {
            .name = "net2big:red:power",
            .gpio = NET2BIG_GPIO_PWR_RED_LED,
      },
      {
            .name = "net2big:blue:power",
            .gpio = NET2BIG_GPIO_PWR_BLUE_LED,
      },
      {
            .name = "net2big:red:sata0",
            .gpio = NET2BIG_GPIO_SATA0_RED_LED,
      },
      {
            .name = "net2big:red:sata1",
            .gpio = NET2BIG_GPIO_SATA1_RED_LED,
      },
};

static struct gpio_led_platform_data net2big_led_data = {
      .num_leds = ARRAY_SIZE(net2big_leds),
      .leds = net2big_leds,
};

static struct platform_device net2big_gpio_leds = {
      .name           = "leds-gpio",
      .id             = -1,
      .dev            = {
            .platform_data  = &net2big_led_data,
      },
};

static void __init net2big_gpio_leds_init(void)
{
      int err;

      /* Stop initial CPLD slow red/blue blinking on power LED. */
      err = gpio_request(NET2BIG_GPIO_PWR_LED_BLINK_STOP,
                     "Power LED blink stop");
      if (err == 0) {
            err = gpio_direction_output(NET2BIG_GPIO_PWR_LED_BLINK_STOP, 1);
            if (err)
                  gpio_free(NET2BIG_GPIO_PWR_LED_BLINK_STOP);
      }
      if (err)
            pr_err("net2big: failed to setup power LED blink GPIO\n");

      /*
       * Configure SATA0 and SATA1 blue LEDs to blink in relation with the
       * hard disk activity.
       */
      err = gpio_request(NET2BIG_GPIO_SATA0_BLUE_LED,
                     "SATA0 blue LED control");
      if (err == 0) {
            err = gpio_direction_output(NET2BIG_GPIO_SATA0_BLUE_LED, 1);
            if (err)
                  gpio_free(NET2BIG_GPIO_SATA0_BLUE_LED);
      }
      if (err)
            pr_err("net2big: failed to setup SATA0 blue LED GPIO\n");

      err = gpio_request(NET2BIG_GPIO_SATA1_BLUE_LED,
                     "SATA1 blue LED control");
      if (err == 0) {
            err = gpio_direction_output(NET2BIG_GPIO_SATA1_BLUE_LED, 1);
            if (err)
                  gpio_free(NET2BIG_GPIO_SATA1_BLUE_LED);
      }
      if (err)
            pr_err("net2big: failed to setup SATA1 blue LED GPIO\n");

      platform_device_register(&net2big_gpio_leds);
}

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

#define NET2BIG_GPIO_PUSH_BUTTON    18
#define NET2BIG_GPIO_POWER_SWITCH_ON      8
#define NET2BIG_GPIO_POWER_SWITCH_OFF     9

#define NET2BIG_SWITCH_POWER_ON           0x1
#define NET2BIG_SWITCH_POWER_OFF    0x2

static struct gpio_keys_button net2big_buttons[] = {
      {
            .type       = EV_SW,
            .code       = NET2BIG_SWITCH_POWER_OFF,
            .gpio       = NET2BIG_GPIO_POWER_SWITCH_OFF,
            .desc       = "Power rocker switch (auto|off)",
            .active_low = 0,
      },
      {
            .type       = EV_SW,
            .code       = NET2BIG_SWITCH_POWER_ON,
            .gpio       = NET2BIG_GPIO_POWER_SWITCH_ON,
            .desc       = "Power rocker switch (on|auto)",
            .active_low = 0,
      },
      {
            .type       = EV_KEY,
            .code       = KEY_POWER,
            .gpio       = NET2BIG_GPIO_PUSH_BUTTON,
            .desc       = "Front Push Button",
            .active_low = 0,
      },
};

static struct gpio_keys_platform_data net2big_button_data = {
      .buttons    = net2big_buttons,
      .nbuttons   = ARRAY_SIZE(net2big_buttons),
};

static struct platform_device net2big_gpio_buttons = {
      .name       = "gpio-keys",
      .id         = -1,
      .dev        = {
            .platform_data    = &net2big_button_data,
      },
};

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

static struct orion5x_mpp_mode net2big_mpp_modes[] __initdata = {
      {  0, MPP_GPIO }, /* Raid mode (bit 0) */
      {  1, MPP_GPIO }, /* USB port 2 fuse (0 = Fail, 1 = Ok) */
      {  2, MPP_GPIO }, /* Raid mode (bit 1) */
      {  3, MPP_GPIO }, /* Board ID (bit 0) */
      {  4, MPP_GPIO }, /* Fan activity (0 = Off, 1 = On) */
      {  5, MPP_GPIO }, /* Fan fail detection */
      {  6, MPP_GPIO }, /* Red front LED (0 = Off, 1 = On) */
      {  7, MPP_GPIO }, /* Disable initial blinking on front LED */
      {  8, MPP_GPIO }, /* Rear power switch (on|auto) */
      {  9, MPP_GPIO }, /* Rear power switch (auto|off) */
      { 10, MPP_GPIO }, /* SATA 1 red LED (0 = Off, 1 = On) */
      { 11, MPP_GPIO }, /* SATA 0 red LED (0 = Off, 1 = On) */
      { 12, MPP_GPIO }, /* Board ID (bit 1) */
      { 13, MPP_GPIO }, /* SATA 1 blue LED blink control */
      { 14, MPP_SATA_LED },
      { 15, MPP_SATA_LED },
      { 16, MPP_GPIO }, /* Blue front LED control */
      { 17, MPP_GPIO }, /* SATA 0 blue LED blink control */
      { 18, MPP_GPIO }, /* Front button (0 = Released, 1 = Pushed ) */
      { 19, MPP_GPIO }, /* SATA{0,1} power On/Off request */
      { -1 }
      /* 22: USB port 1 fuse (0 = Fail, 1 = Ok) */
      /* 23: SATA 0 power status */
      /* 24: Board power off */
      /* 25: SATA 1 power status */
};

#define NET2BIG_GPIO_POWER_OFF            24

static void net2big_power_off(void)
{
      gpio_set_value(NET2BIG_GPIO_POWER_OFF, 1);
}

static void __init net2big_init(void)
{
      /*
       * Setup basic Orion functions. Need to be called early.
       */
      orion5x_init();

      orion5x_mpp_conf(net2big_mpp_modes);

      /*
       * Configure peripherals.
       */
      orion5x_ehci0_init();
      orion5x_ehci1_init();
      orion5x_eth_init(&net2big_eth_data);
      orion5x_i2c_init();
      orion5x_uart0_init();
      orion5x_xor_init();

      net2big_sata_power_init();
      orion5x_sata_init(&net2big_sata_data);

      orion5x_setup_dev_boot_win(NET2BIG_NOR_BOOT_BASE,
                           NET2BIG_NOR_BOOT_SIZE);
      platform_device_register(&net2big_nor_flash);

      platform_device_register(&net2big_gpio_buttons);
      net2big_gpio_leds_init();

      i2c_register_board_info(0, net2big_i2c_devices,
                        ARRAY_SIZE(net2big_i2c_devices));

      orion_gpio_set_valid(NET2BIG_GPIO_POWER_OFF, 1);

      if (gpio_request(NET2BIG_GPIO_POWER_OFF, "power-off") == 0 &&
          gpio_direction_output(NET2BIG_GPIO_POWER_OFF, 0) == 0)
            pm_power_off = net2big_power_off;
      else
            pr_err("net2big: failed to configure power-off GPIO\n");

      pr_notice("net2big: Flash writing is not yet supported.\n");
}

/* Warning: LaCie use a wrong mach-type (0x20e=526) in their bootloader. */
MACHINE_START(NET2BIG, "LaCie 2Big Network")
      .boot_params      = 0x00000100,
      .init_machine     = net2big_init,
      .map_io           = orion5x_map_io,
      .init_irq   = orion5x_init_irq,
      .timer            = &orion5x_timer,
      .fixup            = tag_fixup_mem32,
MACHINE_END


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