// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * QNAP TS-109/TS-209 Board Setup
 *
 * Maintainer: Byron Bradley <byron.bbradley@gmail.com>
 */
#include <linux/gpio.h>
#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/mtd/rawnand.h>
#include <linux/mv643xx_eth.h>
#include <linux/gpio_keys.h>
#include <linux/input.h>
#include <linux/i2c.h>
#include <linux/serial_reg.h>
#include <linux/ata_platform.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/pci.h>
#include "common.h"
#include "mpp.h"
#include "orion5x.h"
#include "tsx09-common.h"

#define QNAP_TS209_NOR_BOOT_BASE 0xf4000000
#define QNAP_TS209_NOR_BOOT_SIZE SZ_8M

/****************************************************************************
 * 8MiB NOR flash. The struct mtd_partition is not in the same order as the
 *     partitions on the device because we want to keep compatibility with
 *     existing QNAP firmware.
 *
 * Layout as used by QNAP:
 *  [2] 0x00000000-0x00200000 : "Kernel"
 *  [3] 0x00200000-0x00600000 : "RootFS1"
 *  [4] 0x00600000-0x00700000 : "RootFS2"
 *  [6] 0x00700000-0x00760000 : "NAS Config" (read-only)
 *  [5] 0x00760000-0x00780000 : "U-Boot Config"
 *  [1] 0x00780000-0x00800000 : "U-Boot" (read-only)
 ***************************************************************************/
static struct mtd_partition qnap_ts209_partitions[] = {
        {
                .name           = "U-Boot",
                .size           = 0x00080000,
                .offset         = 0x00780000,
                .mask_flags     = MTD_WRITEABLE,
        }, {
                .name           = "Kernel",
                .size           = 0x00200000,
                .offset         = 0,
        }, {
                .name           = "RootFS1",
                .size           = 0x00400000,
                .offset         = 0x00200000,
        }, {
                .name           = "RootFS2",
                .size           = 0x00100000,
                .offset         = 0x00600000,
        }, {
                .name           = "U-Boot Config",
                .size           = 0x00020000,
                .offset         = 0x00760000,
        }, {
                .name           = "NAS Config",
                .size           = 0x00060000,
                .offset         = 0x00700000,
                .mask_flags     = MTD_WRITEABLE,
        },
};

static struct physmap_flash_data qnap_ts209_nor_flash_data = {
        .width          = 1,
        .parts          = qnap_ts209_partitions,
        .nr_parts       = ARRAY_SIZE(qnap_ts209_partitions)
};

static struct resource qnap_ts209_nor_flash_resource = {
        .flags  = IORESOURCE_MEM,
        .start  = QNAP_TS209_NOR_BOOT_BASE,
        .end    = QNAP_TS209_NOR_BOOT_BASE + QNAP_TS209_NOR_BOOT_SIZE - 1,
};

static struct platform_device qnap_ts209_nor_flash = {
        .name           = "physmap-flash",
        .id             = 0,
        .dev            = {
                .platform_data  = &qnap_ts209_nor_flash_data,
        },
        .resource       = &qnap_ts209_nor_flash_resource,
        .num_resources  = 1,
};

/*****************************************************************************
 * PCI
 ****************************************************************************/

#define QNAP_TS209_PCI_SLOT0_OFFS       7
#define QNAP_TS209_PCI_SLOT0_IRQ_PIN    6
#define QNAP_TS209_PCI_SLOT1_IRQ_PIN    7

static void __init qnap_ts209_pci_preinit(void)
{
        int pin;

        /*
         * Configure PCI GPIO IRQ pins
         */
        pin = QNAP_TS209_PCI_SLOT0_IRQ_PIN;
        if (gpio_request(pin, "PCI Int1") == 0) {
                if (gpio_direction_input(pin) == 0) {
                        irq_set_irq_type(gpio_to_irq(pin), IRQ_TYPE_LEVEL_LOW);
                } else {
                        printk(KERN_ERR "qnap_ts209_pci_preinit failed to "
                                        "set_irq_type pin %d\n", pin);
                        gpio_free(pin);
                }
        } else {
                printk(KERN_ERR "qnap_ts209_pci_preinit failed to gpio_request "
                                "%d\n", pin);
        }

        pin = QNAP_TS209_PCI_SLOT1_IRQ_PIN;
        if (gpio_request(pin, "PCI Int2") == 0) {
                if (gpio_direction_input(pin) == 0) {
                        irq_set_irq_type(gpio_to_irq(pin), IRQ_TYPE_LEVEL_LOW);
                } else {
                        printk(KERN_ERR "qnap_ts209_pci_preinit failed "
                                        "to set_irq_type pin %d\n", pin);
                        gpio_free(pin);
                }
        } else {
                printk(KERN_ERR "qnap_ts209_pci_preinit failed to gpio_request "
                                "%d\n", pin);
        }
}

static int __init qnap_ts209_pci_map_irq(const struct pci_dev *dev, u8 slot,
        u8 pin)
{
        int irq;

        /*
         * Check for devices with hard-wired IRQs.
         */
        irq = orion5x_pci_map_irq(dev, slot, pin);
        if (irq != -1)
                return irq;

        /*
         * PCI IRQs are connected via GPIOs.
         */
        switch (slot - QNAP_TS209_PCI_SLOT0_OFFS) {
        case 0:
                return gpio_to_irq(QNAP_TS209_PCI_SLOT0_IRQ_PIN);
        case 1:
                return gpio_to_irq(QNAP_TS209_PCI_SLOT1_IRQ_PIN);
        default:
                return -1;
        }
}

static struct hw_pci qnap_ts209_pci __initdata = {
        .nr_controllers = 2,
        .preinit        = qnap_ts209_pci_preinit,
        .setup          = orion5x_pci_sys_setup,
        .scan           = orion5x_pci_sys_scan_bus,
        .map_irq        = qnap_ts209_pci_map_irq,
};

static int __init qnap_ts209_pci_init(void)
{
        if (machine_is_ts209())
                pci_common_init(&qnap_ts209_pci);

        return 0;
}

subsys_initcall(qnap_ts209_pci_init);

/*****************************************************************************
 * RTC S35390A on I2C bus
 ****************************************************************************/

#define TS209_RTC_GPIO  3

static struct i2c_board_info __initdata qnap_ts209_i2c_rtc = {
        I2C_BOARD_INFO("s35390a", 0x30),
        .irq    = 0,
};

/****************************************************************************
 * GPIO Attached Keys
 *     Power button is attached to the PIC microcontroller
 ****************************************************************************/

#define QNAP_TS209_GPIO_KEY_MEDIA       1
#define QNAP_TS209_GPIO_KEY_RESET       2

static struct gpio_keys_button qnap_ts209_buttons[] = {
        {
                .code           = KEY_COPY,
                .gpio           = QNAP_TS209_GPIO_KEY_MEDIA,
                .desc           = "USB Copy Button",
                .active_low     = 1,
        }, {
                .code           = KEY_RESTART,
                .gpio           = QNAP_TS209_GPIO_KEY_RESET,
                .desc           = "Reset Button",
                .active_low     = 1,
        },
};

static struct gpio_keys_platform_data qnap_ts209_button_data = {
        .buttons        = qnap_ts209_buttons,
        .nbuttons       = ARRAY_SIZE(qnap_ts209_buttons),
};

static struct platform_device qnap_ts209_button_device = {
        .name           = "gpio-keys",
        .id             = -1,
        .num_resources  = 0,
        .dev            = {
                .platform_data  = &qnap_ts209_button_data,
        },
};

/*****************************************************************************
 * SATA
 ****************************************************************************/
static struct mv_sata_platform_data qnap_ts209_sata_data = {
        .n_ports        = 2,
};

/*****************************************************************************

 * General Setup
 ****************************************************************************/
static unsigned int ts209_mpp_modes[] __initdata = {
        MPP0_UNUSED,
        MPP1_GPIO,              /* USB copy button */
        MPP2_GPIO,              /* Load defaults button */
        MPP3_GPIO,              /* GPIO RTC */
        MPP4_UNUSED,
        MPP5_UNUSED,
        MPP6_GPIO,              /* PCI Int A */
        MPP7_GPIO,              /* PCI Int B */
        MPP8_UNUSED,
        MPP9_UNUSED,
        MPP10_UNUSED,
        MPP11_UNUSED,
        MPP12_SATA_LED,         /* SATA 0 presence */
        MPP13_SATA_LED,         /* SATA 1 presence */
        MPP14_SATA_LED,         /* SATA 0 active */
        MPP15_SATA_LED,         /* SATA 1 active */
        MPP16_UART,             /* UART1 RXD */
        MPP17_UART,             /* UART1 TXD */
        MPP18_GPIO,             /* SW_RST */
        MPP19_UNUSED,
        0,
};

static void __init qnap_ts209_init(void)
{
        /*
         * Setup basic Orion functions. Need to be called early.
         */
        orion5x_init();

        orion5x_mpp_conf(ts209_mpp_modes);

        /*
         * MPP[20] PCI clock 0
         * MPP[21] PCI clock 1
         * MPP[22] USB 0 over current
         * MPP[23-25] Reserved
         */

        /*
         * Configure peripherals.
         */
        mvebu_mbus_add_window_by_id(ORION_MBUS_DEVBUS_BOOT_TARGET,
                                    ORION_MBUS_DEVBUS_BOOT_ATTR,
                                    QNAP_TS209_NOR_BOOT_BASE,
                                    QNAP_TS209_NOR_BOOT_SIZE);
        platform_device_register(&qnap_ts209_nor_flash);

        orion5x_ehci0_init();
        orion5x_ehci1_init();
        qnap_tsx09_find_mac_addr(QNAP_TS209_NOR_BOOT_BASE +
                                 qnap_ts209_partitions[5].offset,
                                 qnap_ts209_partitions[5].size);
        orion5x_eth_init(&qnap_tsx09_eth_data);
        orion5x_i2c_init();
        orion5x_sata_init(&qnap_ts209_sata_data);
        orion5x_uart0_init();
        orion5x_uart1_init();
        orion5x_xor_init();

        platform_device_register(&qnap_ts209_button_device);

        /* Get RTC IRQ and register the chip */
        if (gpio_request(TS209_RTC_GPIO, "rtc") == 0) {
                if (gpio_direction_input(TS209_RTC_GPIO) == 0)
                        qnap_ts209_i2c_rtc.irq = gpio_to_irq(TS209_RTC_GPIO);
                else
                        gpio_free(TS209_RTC_GPIO);
        }
        if (qnap_ts209_i2c_rtc.irq == 0)
                pr_warn("qnap_ts209_init: failed to get RTC IRQ\n");
        i2c_register_board_info(0, &qnap_ts209_i2c_rtc, 1);

        /* register tsx09 specific power-off method */
        register_platform_power_off(qnap_tsx09_power_off);
}

MACHINE_START(TS209, "QNAP TS-109/TS-209")
        /* Maintainer: Byron Bradley <byron.bbradley@gmail.com> */
        .atag_offset    = 0x100,
        .nr_irqs        = ORION5X_NR_IRQS,
        .init_machine   = qnap_ts209_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