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");
90
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