// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *  Registration of Cobalt UART platform device.
 *
 *  Copyright (C) 2007  Yoichi Yuasa <yuasa@linux-mips.org>
 */
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/ioport.h>
#include <linux/platform_device.h>
#include <linux/serial_8250.h>

#include <cobalt.h>
#include <irq.h>

static struct resource cobalt_uart_resource[] __initdata = {
        {
                .start  = 0x1c800000,
                .end    = 0x1c800007,
                .flags  = IORESOURCE_MEM,
        },
        {
                .start  = SERIAL_IRQ,
                .end    = SERIAL_IRQ,
                .flags  = IORESOURCE_IRQ,
        },
};

static struct plat_serial8250_port cobalt_serial8250_port[] = {
        {
                .irq            = SERIAL_IRQ,
                .uartclk        = 18432000,
                .iotype         = UPIO_MEM,
                .flags          = UPF_IOREMAP | UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
                .mapbase        = 0x1c800000,
        },
        {},
};

static __init int cobalt_uart_add(void)
{
        struct platform_device *pdev;
        int retval;

        /*
         * Cobalt Qube1 has no UART.
         */
        if (cobalt_board_id == COBALT_BRD_ID_QUBE1)
                return 0;

        pdev = platform_device_alloc("serial8250", -1);
        if (!pdev)
                return -ENOMEM;

        pdev->id = PLAT8250_DEV_PLATFORM;
        pdev->dev.platform_data = cobalt_serial8250_port;

        retval = platform_device_add_resources(pdev, cobalt_uart_resource, ARRAY_SIZE(cobalt_uart_resource));
        if (retval)
                goto err_free_device;

        retval = platform_device_add(pdev);
        if (retval)
                goto err_free_device;

        return 0;

err_free_device:
        platform_device_put(pdev);

        return retval;
}
device_initcall(cobalt_uart_add);