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7feb2f78 PLB |
1 | /* |
2 | * Copyright (C) 2013-15, Intel Corporation. All rights reserved. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or | |
5 | * modify it under the terms of the GNU General Public License version | |
6 | * 2 as published by the Free Software Foundation. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
12 | * | |
13 | */ | |
14 | ||
15 | #ifndef __LINUX_SND_SOC_ACPI_H | |
16 | #define __LINUX_SND_SOC_ACPI_H | |
17 | ||
18 | #include <linux/stddef.h> | |
19 | #include <linux/acpi.h> | |
845ab400 | 20 | #include <linux/mod_devicetable.h> |
7feb2f78 PLB |
21 | |
22 | struct snd_soc_acpi_package_context { | |
23 | char *name; /* package name */ | |
24 | int length; /* number of elements */ | |
25 | struct acpi_buffer *format; | |
26 | struct acpi_buffer *state; | |
27 | bool data_valid; | |
28 | }; | |
29 | ||
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30 | /* codec name is used in DAIs is i2c-<HID>:00 with HID being 8 chars */ |
31 | #define SND_ACPI_I2C_ID_LEN (4 + ACPI_ID_LEN + 3 + 1) | |
32 | ||
7feb2f78 | 33 | #if IS_ENABLED(CONFIG_ACPI) |
7feb2f78 PLB |
34 | bool snd_soc_acpi_find_package_from_hid(const u8 hid[ACPI_ID_LEN], |
35 | struct snd_soc_acpi_package_context *ctx); | |
36 | #else | |
7feb2f78 PLB |
37 | static inline bool |
38 | snd_soc_acpi_find_package_from_hid(const u8 hid[ACPI_ID_LEN], | |
39 | struct snd_soc_acpi_package_context *ctx) | |
40 | { | |
41 | return false; | |
42 | } | |
43 | #endif | |
44 | ||
45 | /* acpi match */ | |
46 | struct snd_soc_acpi_mach * | |
47 | snd_soc_acpi_find_machine(struct snd_soc_acpi_mach *machines); | |
48 | ||
7feb2f78 PLB |
49 | /** |
50 | * snd_soc_acpi_mach: ACPI-based machine descriptor. Most of the fields are | |
51 | * related to the hardware, except for the firmware and topology file names. | |
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52 | * A platform supported by legacy and Sound Open Firmware (SOF) would expose |
53 | * all firmware/topology related fields. | |
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54 | * |
55 | * @id: ACPI ID (usually the codec's) used to find a matching machine driver. | |
56 | * @drv_name: machine driver name | |
976b5a0e | 57 | * @fw_filename: firmware file name. Used when SOF is not enabled. |
7feb2f78 PLB |
58 | * @board: board name |
59 | * @machine_quirk: pointer to quirk, usually based on DMI information when | |
60 | * ACPI ID alone is not sufficient, wrong or misleading | |
61 | * @quirk_data: data used to uniquely identify a machine, usually a list of | |
62 | * audio codecs whose presence if checked with ACPI | |
63 | * @pdata: intended for platform data or machine specific-ops. This structure | |
64 | * is not constant since this field may be updated at run-time | |
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65 | * @sof_fw_filename: Sound Open Firmware file name, if enabled |
66 | * @sof_tplg_filename: Sound Open Firmware topology file name, if enabled | |
67 | * @asoc_plat_name: ASoC platform name, used for binding machine drivers | |
68 | * if non NULL | |
69 | * @new_mach_data: machine driver private data fixup | |
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70 | */ |
71 | /* Descriptor for SST ASoC machine driver */ | |
72 | struct snd_soc_acpi_mach { | |
73 | const u8 id[ACPI_ID_LEN]; | |
74 | const char *drv_name; | |
75 | const char *fw_filename; | |
76 | const char *board; | |
77 | struct snd_soc_acpi_mach * (*machine_quirk)(void *arg); | |
78 | const void *quirk_data; | |
79 | void *pdata; | |
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80 | const char *sof_fw_filename; |
81 | const char *sof_tplg_filename; | |
82 | const char *asoc_plat_name; | |
83 | struct platform_device * (*new_mach_data)(void *pdata); | |
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84 | }; |
85 | ||
86 | #define SND_SOC_ACPI_MAX_CODECS 3 | |
87 | ||
88 | /** | |
89 | * struct snd_soc_acpi_codecs: Structure to hold secondary codec information | |
90 | * apart from the matched one, this data will be passed to the quirk function | |
91 | * to match with the ACPI detected devices | |
92 | * | |
93 | * @num_codecs: number of secondary codecs used in the platform | |
94 | * @codecs: holds the codec IDs | |
95 | * | |
96 | */ | |
97 | struct snd_soc_acpi_codecs { | |
98 | int num_codecs; | |
99 | u8 codecs[SND_SOC_ACPI_MAX_CODECS][ACPI_ID_LEN]; | |
100 | }; | |
101 | ||
102 | /* check all codecs */ | |
103 | struct snd_soc_acpi_mach *snd_soc_acpi_codec_list(void *arg); | |
104 | ||
105 | #endif |