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(handle: dhandle, guid: &es83xx_dsm_guid, ES83xx_DSM_REVID, |
28 | func: 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 | |