sound/soc/codecs/es83xx-dsm-common.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 //
   3 // Copyright (c) Intel Corporation, 2022
   4 // Copyright Everest Semiconductor Co.,Ltd
   5
   6 #include <linux/module.h>
   7 #include <linux/acpi.h>
   8 #include "es83xx-dsm-common.h"
   9
  10 /* UUID ("a9800c04-e016-343e-41f4-6bcce70f4332") */
  11 static const guid_t es83xx_dsm_guid =
  12         GUID_INIT(0xa9800c04, 0xe016, 0x343e,
  13                   0x41, 0xf4, 0x6b, 0xcc, 0xe7, 0x0f, 0x43, 0x32);
  14
  15 #define ES83xx_DSM_REVID 1
  16
  17 int es83xx_dsm(struct device *dev, int arg, int *value)
  18 {
  19         acpi_handle dhandle;
  20         union acpi_object *obj;
  21         int ret = 0;
  22
  23         dhandle = ACPI_HANDLE(dev);
  24         if (!dhandle)
  25                 return -ENOENT;
  26
  27         obj = acpi_evaluate_dsm(dhandle, &es83xx_dsm_guid, ES83xx_DSM_REVID,
  28                                 arg, NULL);
  29         if (!obj) {
  30                 dev_err(dev, "%s: acpi_evaluate_dsm() failed\n", __func__);
  31                 ret = -EINVAL;
  32                 goto out;
  33         }
  34
  35         if (obj->type != ACPI_TYPE_INTEGER) {
  36                 dev_err(dev, "%s: object is not ACPI_TYPE_INTEGER\n", __func__);
  37                 ret = -EINVAL;
  38                 goto err;
  39         }
  40
  41         *value = obj->integer.value;
  42 err:
  43         ACPI_FREE(obj);
  44 out:
  45         return ret;
  46 }
  47 EXPORT_SYMBOL_GPL(es83xx_dsm);
  48
  49 int es83xx_dsm_dump(struct device *dev)
  50 {
  51         int value;
  52         int ret;
  53
  54         ret = es83xx_dsm(dev, PLATFORM_MAINMIC_TYPE_ARG, &value);
  55         if (ret < 0)
  56                 return ret;
  57         dev_info(dev, "PLATFORM_MAINMIC_TYPE %#x\n", value);
  58
  59         ret = es83xx_dsm(dev, PLATFORM_HPMIC_TYPE_ARG, &value);
  60         if (ret < 0)
  61                 return ret;
  62         dev_info(dev, "PLATFORM_HPMIC_TYPE %#x\n", value);
  63
  64         ret = es83xx_dsm(dev, PLATFORM_SPK_TYPE_ARG, &value);
  65         if (ret < 0)
  66                 return ret;
  67         dev_info(dev, "PLATFORM_SPK_TYPE %#x\n", value);
  68
  69         ret = es83xx_dsm(dev, PLATFORM_HPDET_INV_ARG, &value);
  70         if (ret < 0)
  71                 return ret;
  72         dev_info(dev, "PLATFORM_HPDET_INV %#x\n", value);
  73
  74         ret = es83xx_dsm(dev, PLATFORM_PCM_TYPE_ARG, &value);
  75         if (ret < 0)
  76                 return ret;
  77         dev_info(dev, "PLATFORM_PCM_TYPE %#x\n", value);
  78
  79         ret = es83xx_dsm(dev, PLATFORM_MIC_DE_POP_ARG, &value);
  80         if (ret < 0)
  81                 return ret;
  82         dev_info(dev, "PLATFORM_MIC_DE_POP %#x\n", value);
  83
  84         return 0;
  85 }
  86 EXPORT_SYMBOL_GPL(es83xx_dsm_dump);
  87
  88 MODULE_DESCRIPTION("Everest Semi ES83xx DSM helpers");
  89 MODULE_LICENSE("GPL");