SET_LATE_SYSTEM_SLEEP_PM_OPS(pmc_core_suspend, pmc_core_resume)
};
+static const struct acpi_device_id pmc_core_acpi_ids[] = {
+ {"INT33A1", 0}, /* _HID for Intel Power Engine, _CID PNP0D80*/
+ { }
+};
+MODULE_DEVICE_TABLE(acpi, pmc_core_acpi_ids);
+
static struct platform_driver pmc_core_driver = {
.driver = {
.name = "intel_pmc_core",
+ .acpi_match_table = ACPI_PTR(pmc_core_acpi_ids),
.pm = &pmc_core_pm_ops,
},
.probe = pmc_core_probe,
.remove = pmc_core_remove,
};
-static struct platform_device pmc_core_device = {
- .name = "intel_pmc_core",
-};
-
-static int __init pmc_core_init(void)
-{
- int ret;
-
- if (!x86_match_cpu(intel_pmc_core_ids))
- return -ENODEV;
-
- ret = platform_driver_register(&pmc_core_driver);
- if (ret)
- return ret;
-
- ret = platform_device_register(&pmc_core_device);
- if (ret) {
- platform_driver_unregister(&pmc_core_driver);
- return ret;
- }
-
- return 0;
-}
-
-static void __exit pmc_core_exit(void)
-{
- platform_device_unregister(&pmc_core_device);
- platform_driver_unregister(&pmc_core_driver);
-}
-
-module_init(pmc_core_init)
-module_exit(pmc_core_exit)
+module_platform_driver(pmc_core_driver);
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("Intel PMC Core Driver");
--- /dev/null
+// 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 struct platform_device pmc_core_device = {
+ .name = "intel_pmc_core",
+};
+
+/*
+ * 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_MOBILE, pmc_core_device),
+ INTEL_CPU_FAM6(SKYLAKE_DESKTOP, pmc_core_device),
+ INTEL_CPU_FAM6(KABYLAKE_MOBILE, pmc_core_device),
+ INTEL_CPU_FAM6(KABYLAKE_DESKTOP, pmc_core_device),
+ INTEL_CPU_FAM6(CANNONLAKE_MOBILE, pmc_core_device),
+ INTEL_CPU_FAM6(ICELAKE_MOBILE, 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)
+{
+ platform_device_unregister(&pmc_core_device);
+}
+
+module_init(pmc_core_platform_init);
+module_exit(pmc_core_platform_exit);
+MODULE_LICENSE("GPL v2");