blob: e1266f5c63593e958a7d9412ff2166b3556d8209 [file] [log] [blame]
// SPDX-License-Identifier: GPL-2.0
* Intel PMC Core platform init
* Copyright (c) 2019, Google Inc.
* Author - Rajat Jain
* This code instantiates platform devices for intel_pmc_core driver, only
* on supported platforms that may not have the ACPI devices in the ACPI tables.
* No new platforms should be added here, because we expect that new platforms
* should all have the ACPI device, which is the preferred way of enumeration.
#include <linux/acpi.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <asm/cpu_device_id.h>
#include <asm/intel-family.h>
static void intel_pmc_core_release(struct device *dev)
/* Nothing to do. */
static struct platform_device pmc_core_device = {
.name = "intel_pmc_core",
.dev = {
.release = intel_pmc_core_release,
* intel_pmc_core_platform_ids is the list of platforms where we want to
* instantiate the platform_device if not already instantiated. This is
* different than intel_pmc_core_ids in intel_pmc_core.c which is the
* list of platforms that the driver supports for pmc_core device. The
* other list may grow, but this list should not.
static const struct x86_cpu_id intel_pmc_core_platform_ids[] = {
INTEL_CPU_FAM6(SKYLAKE_L, pmc_core_device),
INTEL_CPU_FAM6(SKYLAKE, pmc_core_device),
INTEL_CPU_FAM6(KABYLAKE_L, pmc_core_device),
INTEL_CPU_FAM6(KABYLAKE, pmc_core_device),
INTEL_CPU_FAM6(CANNONLAKE_L, pmc_core_device),
INTEL_CPU_FAM6(ICELAKE_L, pmc_core_device),
INTEL_CPU_FAM6(COMETLAKE, pmc_core_device),
INTEL_CPU_FAM6(COMETLAKE_L, pmc_core_device),
MODULE_DEVICE_TABLE(x86cpu, intel_pmc_core_platform_ids);
static int __init pmc_core_platform_init(void)
/* Skip creating the platform device if ACPI already has a device */
if (acpi_dev_present("INT33A1", NULL, -1))
return -ENODEV;
if (!x86_match_cpu(intel_pmc_core_platform_ids))
return -ENODEV;
return platform_device_register(&pmc_core_device);
static void __exit pmc_core_platform_exit(void)