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1// SPDX-License-Identifier: GPL-2.02/*3 * Intel(R) Trace Hub ACPI driver4 *5 * Copyright (C) 2017 Intel Corporation.6 */7 8#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt9 10#include <linux/types.h>11#include <linux/module.h>12#include <linux/device.h>13#include <linux/sysfs.h>14#include <linux/platform_device.h>15#include <linux/acpi.h>16 17#include "intel_th.h"18 19#define DRIVER_NAME "intel_th_acpi"20 21static const struct intel_th_drvdata intel_th_acpi_pch = {22 .host_mode_only = 1,23};24 25static const struct intel_th_drvdata intel_th_acpi_uncore = {26 .host_mode_only = 1,27};28 29static const struct acpi_device_id intel_th_acpi_ids[] = {30 { "INTC1000", (kernel_ulong_t)&intel_th_acpi_uncore },31 { "INTC1001", (kernel_ulong_t)&intel_th_acpi_pch },32 { "", 0 },33};34 35MODULE_DEVICE_TABLE(acpi, intel_th_acpi_ids);36 37static int intel_th_acpi_probe(struct platform_device *pdev)38{39 struct acpi_device *adev = ACPI_COMPANION(&pdev->dev);40 struct resource resource[TH_MMIO_END];41 const struct acpi_device_id *id;42 struct intel_th *th;43 int i, r;44 45 id = acpi_match_device(intel_th_acpi_ids, &pdev->dev);46 if (!id)47 return -ENODEV;48 49 for (i = 0, r = 0; i < pdev->num_resources && r < TH_MMIO_END; i++)50 if (pdev->resource[i].flags &51 (IORESOURCE_IRQ | IORESOURCE_MEM))52 resource[r++] = pdev->resource[i];53 54 th = intel_th_alloc(&pdev->dev, (void *)id->driver_data, resource, r);55 if (IS_ERR(th))56 return PTR_ERR(th);57 58 adev->driver_data = th;59 60 return 0;61}62 63static void intel_th_acpi_remove(struct platform_device *pdev)64{65 struct intel_th *th = platform_get_drvdata(pdev);66 67 intel_th_free(th);68}69 70static struct platform_driver intel_th_acpi_driver = {71 .probe = intel_th_acpi_probe,72 .remove_new = intel_th_acpi_remove,73 .driver = {74 .name = DRIVER_NAME,75 .acpi_match_table = intel_th_acpi_ids,76 },77};78 79module_platform_driver(intel_th_acpi_driver);80 81MODULE_LICENSE("GPL v2");82MODULE_DESCRIPTION("Intel(R) Trace Hub ACPI controller driver");83MODULE_AUTHOR("Alexander Shishkin <alexander.shishkin@intel.com>");84