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ls_hgl-setup.c

/*
 * arch/arm/mach-orion5x/ls_hgl-setup.c
 *
 * Maintainer: Zhu Qingsen <zhuqs@cn.fujitsu.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 <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-HGL Info
 ****************************************************************************/

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

#define LS_HGL_NOR_BOOT_BASE  0xf4000000
#define LS_HGL_NOR_BOOT_SIZE  SZ_256K

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

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

static struct resource ls_hgl_nor_flash_resource = {
      .flags      = IORESOURCE_MEM,
      .start      = LS_HGL_NOR_BOOT_BASE,
      .end  = LS_HGL_NOR_BOOT_BASE + LS_HGL_NOR_BOOT_SIZE - 1,
};

static struct platform_device ls_hgl_nor_flash = {
      .name             = "physmap-flash",
      .id               = 0,
      .dev        = {
            .platform_data    = &ls_hgl_nor_flash_data,
      },
      .num_resources          = 1,
      .resource         = &ls_hgl_nor_flash_resource,
};

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

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

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

static struct i2c_board_info __initdata ls_hgl_i2c_rtc = {
      I2C_BOARD_INFO("rs5c372a", 0x32),
};

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

#define LS_HGL_GPIO_LED_ALARM   2
#define LS_HGL_GPIO_LED_INFO    3
#define LS_HGL_GPIO_LED_FUNC    17
#define LS_HGL_GPIO_LED_PWR     0


static struct gpio_led ls_hgl_led_pins[] = {
      {
            .name    = "alarm:red",
            .gpio    = LS_HGL_GPIO_LED_ALARM,
            .active_low     = 1,
      }, {
            .name    = "info:amber",
            .gpio    = LS_HGL_GPIO_LED_INFO,
            .active_low     = 1,
      }, {
            .name    = "func:blue:top",
            .gpio    = LS_HGL_GPIO_LED_FUNC,
            .active_low     = 1,
      }, {
            .name    = "power:blue:bottom",
            .gpio    = LS_HGL_GPIO_LED_PWR,
      },
};

static struct gpio_led_platform_data ls_hgl_led_data = {
      .leds    = ls_hgl_led_pins,
      .num_leds       = ARRAY_SIZE(ls_hgl_led_pins),
};

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

/****************************************************************************
 * GPIO Attached Keys
 ****************************************************************************/
#define LS_HGL_GPIO_KEY_FUNC       15
#define LS_HGL_GPIO_KEY_POWER      8
#define LS_HGL_GPIO_KEY_AUTOPOWER  10

#define LS_HGL_SW_POWER     0x00
#define LS_HGL_SW_AUTOPOWER 0x01

static struct gpio_keys_button ls_hgl_buttons[] = {
      {
            .code    = KEY_OPTION,
            .gpio    = LS_HGL_GPIO_KEY_FUNC,
            .desc    = "Function Button",
            .active_low     = 1,
      }, {
            .type       = EV_SW,
            .code    = LS_HGL_SW_POWER,
            .gpio    = LS_HGL_GPIO_KEY_POWER,
            .desc    = "Power-on Switch",
            .active_low     = 1,
      }, {
            .type       = EV_SW,
            .code    = LS_HGL_SW_AUTOPOWER,
            .gpio    = LS_HGL_GPIO_KEY_AUTOPOWER,
            .desc    = "Power-auto Switch",
            .active_low     = 1,
      },
};

static struct gpio_keys_platform_data ls_hgl_button_data = {
      .buttons    = ls_hgl_buttons,
      .nbuttons       = ARRAY_SIZE(ls_hgl_buttons),
};

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


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


/*****************************************************************************
 * Linkstation LS-HGL specific power off method: reboot
 ****************************************************************************/
/*
 * On the Linkstation LS-HGL, 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 ls_hgl_power_off(void)
{
      arm_machine_restart('h', NULL);
}


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

#define LS_HGL_GPIO_USB_POWER 9
#define LS_HGL_GPIO_AUTO_POWER      10
#define LS_HGL_GPIO_POWER         8

#define LS_HGL_GPIO_HDD_POWER 1

static struct orion5x_mpp_mode ls_hgl_mpp_modes[] __initdata = {
      {  0, MPP_GPIO }, /* LED_PWR */
      {  1, MPP_GPIO }, /* HDD_PWR */
      {  2, MPP_GPIO }, /* LED_ALARM */
      {  3, MPP_GPIO }, /* LED_INFO */
      {  4, MPP_UNUSED },
      {  5, MPP_UNUSED },
      {  6, MPP_GPIO }, /* FAN_LCK */
      {  7, MPP_GPIO }, /* INIT */
      {  8, MPP_GPIO }, /* POWER */
      {  9, MPP_GPIO }, /* USB_PWR */
      { 10, MPP_GPIO }, /* AUTO_POWER */
      { 11, MPP_UNUSED }, /* LED_ETH (dummy) */
      { 12, MPP_UNUSED },
      { 13, MPP_UNUSED },
      { 14, MPP_UNUSED },
      { 15, MPP_GPIO }, /* FUNC */
      { 16, MPP_UNUSED },
      { 17, MPP_GPIO }, /* LED_FUNC */
      { 18, MPP_UNUSED },
      { 19, MPP_UNUSED },
      { -1 },
};

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

      orion5x_mpp_conf(ls_hgl_mpp_modes);

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

      orion5x_setup_dev_boot_win(LS_HGL_NOR_BOOT_BASE,
                           LS_HGL_NOR_BOOT_SIZE);
      platform_device_register(&ls_hgl_nor_flash);

      platform_device_register(&ls_hgl_button_device);

      platform_device_register(&ls_hgl_leds);

      i2c_register_board_info(0, &ls_hgl_i2c_rtc, 1);

      /* enable USB power */
      gpio_set_value(LS_HGL_GPIO_USB_POWER, 1);

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

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

MACHINE_START(LINKSTATION_LS_HGL, "Buffalo Linkstation LS-HGL")
      /* Maintainer: Zhu Qingsen <zhuqs@cn.fujistu.com> */
      .boot_params      = 0x00000100,
      .init_machine     = ls_hgl_init,
      .map_io           = orion5x_map_io,
      .init_irq   = orion5x_init_irq,
      .timer            = &orion5x_timer,
      .fixup            = tag_fixup_mem32,
MACHINE_END

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