// SPDX-License-Identifier: GPL-2.0
/*
 * Intel(R) Trace Hub ACPI driver
 *
 * Copyright (C) 2017 Intel Corporation.
 */

#define pr_fmt(fmt)     KBUILD_MODNAME ": " fmt

#include <linux/types.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/sysfs.h>
#include <linux/platform_device.h>
#include <linux/acpi.h>

#include "intel_th.h"

#define DRIVER_NAME "intel_th_acpi"

static const struct intel_th_drvdata intel_th_acpi_pch = {
        .host_mode_only = 1,
};

static const struct intel_th_drvdata intel_th_acpi_uncore = {
        .host_mode_only = 1,
};

static const struct acpi_device_id intel_th_acpi_ids[] = {
        { "INTC1000",   (kernel_ulong_t)&intel_th_acpi_uncore },
        { "INTC1001",   (kernel_ulong_t)&intel_th_acpi_pch },
        { "",           0 },
};

MODULE_DEVICE_TABLE(acpi, intel_th_acpi_ids);

static int intel_th_acpi_probe(struct platform_device *pdev)
{
        struct acpi_device *adev = ACPI_COMPANION(&pdev->dev);
        struct resource resource[TH_MMIO_END];
        const struct acpi_device_id *id;
        struct intel_th *th;
        int i, r;

        id = acpi_match_device(intel_th_acpi_ids, &pdev->dev);
        if (!id)
                return -ENODEV;

        for (i = 0, r = 0; i < pdev->num_resources && r < TH_MMIO_END; i++)
                if (pdev->resource[i].flags &
                    (IORESOURCE_IRQ | IORESOURCE_MEM))
                        resource[r++] = pdev->resource[i];

        th = intel_th_alloc(&pdev->dev, (void *)id->driver_data, resource, r);
        if (IS_ERR(th))
                return PTR_ERR(th);

        adev->driver_data = th;

        return 0;
}

static void intel_th_acpi_remove(struct platform_device *pdev)
{
        struct intel_th *th = platform_get_drvdata(pdev);

        intel_th_free(th);
}

static struct platform_driver intel_th_acpi_driver = {
        .probe          = intel_th_acpi_probe,
        .remove         = intel_th_acpi_remove,
        .driver         = {
                .name                   = DRIVER_NAME,
                .acpi_match_table       = intel_th_acpi_ids,
        },
};

module_platform_driver(intel_th_acpi_driver);

MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("Intel(R) Trace Hub ACPI controller driver");
MODULE_AUTHOR("Alexander Shishkin <alexander.shishkin@intel.com>");