// SPDX-License-Identifier: GPL-2.0-only
/*
 * arch/arm/mach-orion5x/net2big-setup.c
 *
 * LaCie 2Big Network NAS setup
 *
 * Copyright (C) 2009 Simon Guinot <sguinot@lacie.com>
 */

#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/gpio/machine.h>
#include <linux/delay.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <plat/orion-gpio.h>
#include "common.h"
#include "mpp.h"
#include "orion5x.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 detailed
 * 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",
        },
        {
                .name = "net2big:blue:power",
        },
        {
                .name = "net2big:red:sata0",
        },
        {
                .name = "net2big:red:sata1",
        },
};

static struct gpiod_lookup_table net2big_leds_gpio_table = {
        .dev_id = "leds-gpio",
        .table = {
                GPIO_LOOKUP_IDX("orion_gpio0", NET2BIG_GPIO_PWR_RED_LED, NULL,
                                0, GPIO_ACTIVE_HIGH),
                GPIO_LOOKUP_IDX("orion_gpio0", NET2BIG_GPIO_PWR_BLUE_LED, NULL,
                                1, GPIO_ACTIVE_HIGH),
                GPIO_LOOKUP_IDX("orion_gpio0", NET2BIG_GPIO_SATA0_RED_LED, NULL,
                                2, GPIO_ACTIVE_HIGH),
                GPIO_LOOKUP_IDX("orion_gpio0", NET2BIG_GPIO_SATA1_RED_LED, NULL,
                                3, GPIO_ACTIVE_HIGH),
                { },
        },
};

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");

        gpiod_add_lookup_table(&net2big_leds_gpio_table);
        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 unsigned int net2big_mpp_modes[] __initdata = {
        MPP0_GPIO,      /* Raid mode (bit 0) */
        MPP1_GPIO,      /* USB port 2 fuse (0 = Fail, 1 = Ok) */
        MPP2_GPIO,      /* Raid mode (bit 1) */
        MPP3_GPIO,      /* Board ID (bit 0) */
        MPP4_GPIO,      /* Fan activity (0 = Off, 1 = On) */
        MPP5_GPIO,      /* Fan fail detection */
        MPP6_GPIO,      /* Red front LED (0 = Off, 1 = On) */
        MPP7_GPIO,      /* Disable initial blinking on front LED */
        MPP8_GPIO,      /* Rear power switch (on|auto) */
        MPP9_GPIO,      /* Rear power switch (auto|off) */
        MPP10_GPIO,     /* SATA 1 red LED (0 = Off, 1 = On) */
        MPP11_GPIO,     /* SATA 0 red LED (0 = Off, 1 = On) */
        MPP12_GPIO,     /* Board ID (bit 1) */
        MPP13_GPIO,     /* SATA 1 blue LED blink control */
        MPP14_SATA_LED,
        MPP15_SATA_LED,
        MPP16_GPIO,     /* Blue front LED control */
        MPP17_GPIO,     /* SATA 0 blue LED blink control */
        MPP18_GPIO,     /* Front button (0 = Released, 1 = Pushed ) */
        MPP19_GPIO,     /* SATA{0,1} power On/Off request */
        0,
        /* 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);

        mvebu_mbus_add_window_by_id(ORION_MBUS_DEVBUS_BOOT_TARGET,
                                    ORION_MBUS_DEVBUS_BOOT_ATTR,
                                    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)
                register_platform_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")
        .atag_offset    = 0x100,
        .nr_irqs        = ORION5X_NR_IRQS,
        .init_machine   = net2big_init,
        .map_io         = orion5x_map_io,
        .init_early     = orion5x_init_early,
        .init_irq       = orion5x_init_irq,
        .init_time      = orion5x_timer_init,
        .fixup          = tag_fixup_mem32,
        .restart        = orion5x_restart,
MACHINE_END