drivers/platform/x86/intel/speed_select_if/isst_tpmi.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * isst_tpmi.c: SST TPMI interface
   4  *
   5  * Copyright (c) 2023, Intel Corporation.
   6  * All Rights Reserved.
   7  *
   8  */
   9
  10 #include <linux/auxiliary_bus.h>
  11 #include <linux/module.h>
  12 #include <linux/intel_tpmi.h>
  13
  14 #include "isst_tpmi_core.h"
  15
  16 static int intel_sst_probe(struct auxiliary_device *auxdev, const struct auxiliary_device_id *id)
  17 {
  18         int ret;
  19
  20         ret = tpmi_sst_init();
  21         if (ret)
  22                 return ret;
  23
  24         ret = tpmi_sst_dev_add(auxdev);
  25         if (ret)
  26                 tpmi_sst_exit();
  27
  28         return ret;
  29 }
  30
  31 static void intel_sst_remove(struct auxiliary_device *auxdev)
  32 {
  33         tpmi_sst_dev_remove(auxdev);
  34         tpmi_sst_exit();
  35 }
  36
  37 static int intel_sst_suspend(struct device *dev)
  38 {
  39         tpmi_sst_dev_suspend(to_auxiliary_dev(dev));
  40
  41         return 0;
  42 }
  43
  44 static int intel_sst_resume(struct device *dev)
  45 {
  46         tpmi_sst_dev_resume(to_auxiliary_dev(dev));
  47
  48         return 0;
  49 }
  50
  51 static DEFINE_SIMPLE_DEV_PM_OPS(intel_sst_pm, intel_sst_suspend, intel_sst_resume);
  52
  53 static const struct auxiliary_device_id intel_sst_id_table[] = {
  54         { .name = "intel_vsec.tpmi-sst" },
  55         {}
  56 };
  57 MODULE_DEVICE_TABLE(auxiliary, intel_sst_id_table);
  58
  59 static struct auxiliary_driver intel_sst_aux_driver = {
  60         .id_table       = intel_sst_id_table,
  61         .remove         = intel_sst_remove,
  62         .probe          = intel_sst_probe,
  63         .driver = {
  64                 .pm = pm_sleep_ptr(&intel_sst_pm),
  65         },
  66 };
  67
  68 module_auxiliary_driver(intel_sst_aux_driver);
  69
  70 MODULE_IMPORT_NS(INTEL_TPMI_SST);
  71 MODULE_DESCRIPTION("Intel TPMI SST Driver");
  72 MODULE_LICENSE("GPL");