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ls-chl-setup.c

/*
 * arch/arm/mach-orion5x/ls-chl-setup.c
 *
 * Maintainer: Ash Hughes <ashley.hughes@blueyonder.co.uk>
 *
 * 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/gpio-fan.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/system.h>
#include <mach/orion5x.h>
#include "common.h"
#include "mpp.h"

/*****************************************************************************
 * Linkstation LS-CHL Info
 ****************************************************************************/

/*
 * 256K NOR flash Device bus boot chip select
 */

#define LSCHL_NOR_BOOT_BASE   0xf4000000
#define LSCHL_NOR_BOOT_SIZE   SZ_256K

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

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

static struct resource lschl_nor_flash_resource = {
      .flags      = IORESOURCE_MEM,
      .start      = LSCHL_NOR_BOOT_BASE,
      .end  = LSCHL_NOR_BOOT_BASE + LSCHL_NOR_BOOT_SIZE - 1,
};

static struct platform_device lschl_nor_flash = {
      .name = "physmap-flash",
      .id = 0,
      .dev = {
            .platform_data    = &lschl_nor_flash_data,
      },
      .num_resources = 1,
      .resource = &lschl_nor_flash_resource,
};

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

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

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

static struct i2c_board_info __initdata lschl_i2c_rtc = {
      I2C_BOARD_INFO("rs5c372a", 0x32),
};

/*****************************************************************************
 * LEDs attached to GPIO
 ****************************************************************************/

#define LSCHL_GPIO_LED_ALARM  2
#define LSCHL_GPIO_LED_INFO   3
#define LSCHL_GPIO_LED_FUNC   17
#define LSCHL_GPIO_LED_PWR    0

static struct gpio_led lschl_led_pins[] = {
      {
            .name = "alarm:red",
            .gpio = LSCHL_GPIO_LED_ALARM,
            .active_low = 1,
      }, {
            .name = "info:amber",
            .gpio = LSCHL_GPIO_LED_INFO,
            .active_low = 1,
      }, {
            .name = "func:blue:top",
            .gpio = LSCHL_GPIO_LED_FUNC,
            .active_low = 1,
      }, {
            .name = "power:blue:bottom",
            .gpio = LSCHL_GPIO_LED_PWR,
      },
};

static struct gpio_led_platform_data lschl_led_data = {
      .leds = lschl_led_pins,
      .num_leds = ARRAY_SIZE(lschl_led_pins),
};

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

/*****************************************************************************
 * SATA
 ****************************************************************************/
static struct mv_sata_platform_data lschl_sata_data = {
      .n_ports = 2,
};

/*****************************************************************************
 * LS-CHL specific power off method: reboot
 ****************************************************************************/
/*
 * On the LS-CHL, the shutdown process is following:
 * - Userland monitors key events until the power switch goes to off position
 * - The board reboots
 * - U-boot starts and goes into an idle mode waiting for the user
 *   to move the switch to ON position
 *
 */

static void lschl_power_off(void)
{
      arm_machine_restart('h', NULL);
}

/*****************************************************************************
 * General Setup
 ****************************************************************************/
#define LSCHL_GPIO_USB_POWER  9
#define LSCHL_GPIO_AUTO_POWER 17
#define LSCHL_GPIO_POWER      18

/****************************************************************************
 * GPIO Attached Keys
 ****************************************************************************/
#define LSCHL_GPIO_KEY_FUNC         15
#define LSCHL_GPIO_KEY_POWER        8
#define LSCHL_GPIO_KEY_AUTOPOWER    10
#define LSCHL_SW_POWER        0x00
#define LSCHL_SW_AUTOPOWER    0x01
#define LSCHL_SW_FUNC         0x02

static struct gpio_keys_button lschl_buttons[] = {
      {
            .type = EV_SW,
            .code = LSCHL_SW_POWER,
            .gpio = LSCHL_GPIO_KEY_POWER,
            .desc = "Power-on Switch",
            .active_low = 1,
      }, {
            .type = EV_SW,
            .code = LSCHL_SW_AUTOPOWER,
            .gpio = LSCHL_GPIO_KEY_AUTOPOWER,
            .desc = "Power-auto Switch",
            .active_low = 1,
      }, {
            .type = EV_SW,
            .code = LSCHL_SW_FUNC,
            .gpio = LSCHL_GPIO_KEY_FUNC,
            .desc = "Function Switch",
            .active_low = 1,
      },
};

static struct gpio_keys_platform_data lschl_button_data = {
      .buttons = lschl_buttons,
      .nbuttons = ARRAY_SIZE(lschl_buttons),
};

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

#define LSCHL_GPIO_HDD_POWER  1

/****************************************************************************
 * GPIO Fan
 ****************************************************************************/

#define LSCHL_GPIO_FAN_LOW    16
#define LSCHL_GPIO_FAN_HIGH   14
#define LSCHL_GPIO_FAN_LOCK   6

static struct gpio_fan_alarm lschl_alarm = {
      .gpio = LSCHL_GPIO_FAN_LOCK,
};

static struct gpio_fan_speed lschl_speeds[] = {
      {
            .rpm = 0,
            .ctrl_val = 3,
      }, {
            .rpm = 1500,
            .ctrl_val = 2,
      }, {
            .rpm = 3250,
            .ctrl_val = 1,
      }, {
            .rpm = 5000,
            .ctrl_val = 0,
      },
};

static int lschl_gpio_list[] = {
      LSCHL_GPIO_FAN_HIGH, LSCHL_GPIO_FAN_LOW,
};

static struct gpio_fan_platform_data lschl_fan_data = {
      .num_ctrl = ARRAY_SIZE(lschl_gpio_list),
      .ctrl = lschl_gpio_list,
      .alarm = &lschl_alarm,
      .num_speed = ARRAY_SIZE(lschl_speeds),
      .speed = lschl_speeds,
};

static struct platform_device lschl_fan_device = {
      .name = "gpio-fan",
      .id = -1,
      .num_resources = 0,
      .dev = {
            .platform_data = &lschl_fan_data,
      },
};

/****************************************************************************
 * GPIO Data
 ****************************************************************************/

static struct orion5x_mpp_mode lschl_mpp_modes[] __initdata = {
      {  0, MPP_GPIO }, /* LED POWER */
      {  1, MPP_GPIO }, /* HDD POWER */
      {  2, MPP_GPIO }, /* LED ALARM */
      {  3, MPP_GPIO }, /* LED INFO */
      {  4, MPP_UNUSED },
      {  5, MPP_UNUSED },
      {  6, MPP_GPIO }, /* FAN LOCK */
      {  7, MPP_GPIO }, /* SW INIT */
      {  8, MPP_GPIO }, /* SW POWER */
      {  9, MPP_GPIO }, /* USB POWER */
      { 10, MPP_GPIO }, /* SW AUTO POWER */
      { 11, MPP_UNUSED },
      { 12, MPP_UNUSED },
      { 13, MPP_UNUSED },
      { 14, MPP_GPIO }, /* FAN HIGH */
      { 15, MPP_GPIO }, /* SW FUNC */
      { 16, MPP_GPIO }, /* FAN LOW */
      { 17, MPP_GPIO }, /* LED FUNC */
      { 18, MPP_UNUSED },
      { 19, MPP_UNUSED },
      { -1 },
};

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

      orion5x_mpp_conf(lschl_mpp_modes);

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

      orion5x_setup_dev_boot_win(LSCHL_NOR_BOOT_BASE,
                           LSCHL_NOR_BOOT_SIZE);
      platform_device_register(&lschl_nor_flash);

      platform_device_register(&lschl_leds);

      platform_device_register(&lschl_button_device);

      platform_device_register(&lschl_fan_device);

      i2c_register_board_info(0, &lschl_i2c_rtc, 1);

      /* usb power on */
      gpio_set_value(LSCHL_GPIO_USB_POWER, 1);

      /* register power-off method */
      pm_power_off = lschl_power_off;

      pr_info("%s: finished\n", __func__);
}

MACHINE_START(LINKSTATION_LSCHL, "Buffalo Linkstation LiveV3 (LS-CHL)")
      /* Maintainer: Ash Hughes <ashley.hughes@blueyonder.co.uk> */
      .boot_params      = 0x00000100,
      .init_machine     = lschl_init,
      .map_io           = orion5x_map_io,
      .init_irq   = orion5x_init_irq,
      .timer            = &orion5x_timer,
      .fixup            = tag_fixup_mem32,
MACHINE_END

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