drivers/thermal/intel/int340x_thermal/int3401_thermal.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * INT3401 processor thermal device
   4  * Copyright (c) 2020, Intel Corporation.
   5  */
   6 #include <linux/acpi.h>
   7 #include <linux/kernel.h>
   8 #include <linux/module.h>
   9 #include <linux/platform_device.h>
  10 #include <linux/thermal.h>
  11
  12 #include "int340x_thermal_zone.h"
  13 #include "processor_thermal_device.h"
  14
  15 static const struct acpi_device_id int3401_device_ids[] = {
  16         {"INT3401", 0},
  17         {"", 0},
  18 };
  19 MODULE_DEVICE_TABLE(acpi, int3401_device_ids);
  20
  21 static int int3401_add(struct platform_device *pdev)
  22 {
  23         struct proc_thermal_device *proc_priv;
  24         int ret;
  25
  26         proc_priv = devm_kzalloc(&pdev->dev, sizeof(*proc_priv), GFP_KERNEL);
  27         if (!proc_priv)
  28                 return -ENOMEM;
  29
  30         ret = proc_thermal_add(&pdev->dev, proc_priv);
  31         if (ret)
  32                 return ret;
  33
  34         platform_set_drvdata(pdev, proc_priv);
  35
  36         return ret;
  37 }
  38
  39 static int int3401_remove(struct platform_device *pdev)
  40 {
  41         proc_thermal_remove(platform_get_drvdata(pdev));
  42
  43         return 0;
  44 }
  45
  46 #ifdef CONFIG_PM_SLEEP
  47 static int int3401_thermal_suspend(struct device *dev)
  48 {
  49         return proc_thermal_suspend(dev);
  50 }
  51 static int int3401_thermal_resume(struct device *dev)
  52 {
  53         return proc_thermal_resume(dev);
  54 }
  55 #else
  56 #define int3401_thermal_suspend NULL
  57 #define int3401_thermal_resume NULL
  58 #endif
  59
  60 static SIMPLE_DEV_PM_OPS(int3401_proc_thermal_pm, int3401_thermal_suspend,
  61                          int3401_thermal_resume);
  62
  63 static struct platform_driver int3401_driver = {
  64         .probe = int3401_add,
  65         .remove = int3401_remove,
  66         .driver = {
  67                 .name = "int3401 thermal",
  68                 .acpi_match_table = int3401_device_ids,
  69                 .pm = &int3401_proc_thermal_pm,
  70         },
  71 };
  72
  73 static int __init proc_thermal_init(void)
  74 {
  75         return platform_driver_register(&int3401_driver);
  76 }
  77
  78 static void __exit proc_thermal_exit(void)
  79 {
  80         platform_driver_unregister(&int3401_driver);
  81 }
  82
  83 module_init(proc_thermal_init);
  84 module_exit(proc_thermal_exit);
  85
  86 MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>");
  87 MODULE_DESCRIPTION("Processor Thermal Reporting Device Driver");
  88 MODULE_LICENSE("GPL v2");