drivers/acpi/dptf/int340x_thermal.c

   1 /*
   2  * ACPI support for int340x thermal drivers
   3  *
   4  * Copyright (C) 2014, Intel Corporation
   5  * Authors: Zhang Rui <rui.zhang@intel.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  */
  11
  12 #include <linux/acpi.h>
  13 #include <linux/module.h>
  14
  15 #include "internal.h"
  16
  17 #define INT3401_DEVICE 0X01
  18 static const struct acpi_device_id int340x_thermal_device_ids[] = {
  19         {"INT3400"},
  20         {"INT3401", INT3401_DEVICE},
  21         {"INT3402"},
  22         {"INT3403"},
  23         {"INT3404"},
  24         {"INT3406"},
  25         {"INT3407"},
  26         {"INT3408"},
  27         {"INT3409"},
  28         {"INT340A"},
  29         {"INT340B"},
  30         {""},
  31 };
  32
  33 static int int340x_thermal_handler_attach(struct acpi_device *adev,
  34                                         const struct acpi_device_id *id)
  35 {
  36         if (IS_ENABLED(CONFIG_INT340X_THERMAL))
  37                 acpi_create_platform_device(adev, NULL);
  38         /* Intel SoC DTS thermal driver needs INT3401 to set IRQ descriptor */
  39         else if (IS_ENABLED(CONFIG_INTEL_SOC_DTS_THERMAL) &&
  40                  id->driver_data == INT3401_DEVICE)
  41                 acpi_create_platform_device(adev, NULL);
  42         return 1;
  43 }
  44
  45 static struct acpi_scan_handler int340x_thermal_handler = {
  46         .ids = int340x_thermal_device_ids,
  47         .attach = int340x_thermal_handler_attach,
  48 };
  49
  50 void __init acpi_int340x_thermal_init(void)
  51 {
  52         acpi_scan_add_handler(&int340x_thermal_handler);
  53 }