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1/* SPDX-License-Identifier: GPL-2.0-only
2 *
3 * Copyright (C) 2013-15, Intel Corporation
4 */
5
6#ifndef __LINUX_SND_SOC_ACPI_H
7#define __LINUX_SND_SOC_ACPI_H
8
9#include <linux/stddef.h>
10#include <linux/acpi.h>
11#include <linux/mod_devicetable.h>
12#include <linux/soundwire/sdw.h>
13#include <sound/soc.h>
14
15struct snd_soc_acpi_package_context {
16 char *name; /* package name */
17 int length; /* number of elements */
18 struct acpi_buffer *format;
19 struct acpi_buffer *state;
20 bool data_valid;
21};
22
23/* codec name is used in DAIs is i2c-<HID>:00 with HID being 8 chars */
24#define SND_ACPI_I2C_ID_LEN (4 + ACPI_ID_LEN + 3 + 1)
25
26#if IS_ENABLED(CONFIG_ACPI)
27/* acpi match */
28struct snd_soc_acpi_mach *
29snd_soc_acpi_find_machine(struct snd_soc_acpi_mach *machines);
30
31bool snd_soc_acpi_find_package_from_hid(const u8 hid[ACPI_ID_LEN],
32 struct snd_soc_acpi_package_context *ctx);
33
34/* check all codecs */
35struct snd_soc_acpi_mach *snd_soc_acpi_codec_list(void *arg);
36
37#else
38/* acpi match */
39static inline struct snd_soc_acpi_mach *
40snd_soc_acpi_find_machine(struct snd_soc_acpi_mach *machines)
41{
42 return NULL;
43}
44
45static inline bool
46snd_soc_acpi_find_package_from_hid(const u8 hid[ACPI_ID_LEN],
47 struct snd_soc_acpi_package_context *ctx)
48{
49 return false;
50}
51
52/* check all codecs */
53static inline struct snd_soc_acpi_mach *snd_soc_acpi_codec_list(void *arg)
54{
55 return NULL;
56}
57#endif
58
59/**
60 * snd_soc_acpi_mach_params: interface for machine driver configuration
61 *
62 * @acpi_ipc_irq_index: used for BYT-CR detection
63 * @platform: string used for HDAudio codec support
64 * @codec_mask: used for HDAudio support
65 * @dmic_num: number of SoC- or chipset-attached PDM digital microphones
66 * @link_mask: SoundWire links enabled on the board
67 * @links: array of SoundWire link _ADR descriptors, null terminated
68 * @i2s_link_mask: I2S/TDM links enabled on the board
69 * @num_dai_drivers: number of elements in @dai_drivers
70 * @dai_drivers: pointer to dai_drivers, used e.g. in nocodec mode
71 * @subsystem_vendor: optional PCI SSID vendor value
72 * @subsystem_device: optional PCI SSID device value
73 * @subsystem_rev: optional PCI SSID revision value
74 * @subsystem_id_set: true if a value has been written to
75 * subsystem_vendor and subsystem_device.
76 * @bt_link_mask: BT offload link enabled on the board
77 */
78struct snd_soc_acpi_mach_params {
79 u32 acpi_ipc_irq_index;
80 const char *platform;
81 u32 codec_mask;
82 u32 dmic_num;
83 u32 link_mask;
84 const struct snd_soc_acpi_link_adr *links;
85 u32 i2s_link_mask;
86 u32 num_dai_drivers;
87 struct snd_soc_dai_driver *dai_drivers;
88 unsigned short subsystem_vendor;
89 unsigned short subsystem_device;
90 unsigned short subsystem_rev;
91 bool subsystem_id_set;
92 u32 bt_link_mask;
93};
94
95/**
96 * snd_soc_acpi_endpoint - endpoint descriptor
97 * @num: endpoint number (mandatory, unique per device)
98 * @aggregated: 0 (independent) or 1 (logically grouped)
99 * @group_position: zero-based order (only when @aggregated is 1)
100 * @group_id: platform-unique group identifier (only when @aggregrated is 1)
101 */
102struct snd_soc_acpi_endpoint {
103 u8 num;
104 u8 aggregated;
105 u8 group_position;
106 u8 group_id;
107};
108
109/**
110 * snd_soc_acpi_adr_device - descriptor for _ADR-enumerated device
111 * @adr: 64 bit ACPI _ADR value
112 * @num_endpoints: number of endpoints for this device
113 * @endpoints: array of endpoints
114 * @name_prefix: string used for codec controls
115 */
116struct snd_soc_acpi_adr_device {
117 const u64 adr;
118 const u8 num_endpoints;
119 const struct snd_soc_acpi_endpoint *endpoints;
120 const char *name_prefix;
121};
122
123/**
124 * snd_soc_acpi_link_adr - ACPI-based list of _ADR enumerated devices
125 * @mask: one bit set indicates the link this list applies to
126 * @num_adr: ARRAY_SIZE of devices
127 * @adr_d: array of devices
128 *
129 * The number of devices per link can be more than 1, e.g. in SoundWire
130 * multi-drop configurations.
131 */
132
133struct snd_soc_acpi_link_adr {
134 const u32 mask;
135 const u32 num_adr;
136 const struct snd_soc_acpi_adr_device *adr_d;
137};
138
139/*
140 * when set the topology uses the -ssp<N> suffix, where N is determined based on
141 * BIOS or DMI information
142 */
143#define SND_SOC_ACPI_TPLG_INTEL_SSP_NUMBER BIT(0)
144
145/*
146 * when more than one SSP is reported in the link mask, use the most significant.
147 * This choice was found to be valid on platforms with ES8336 codecs.
148 */
149#define SND_SOC_ACPI_TPLG_INTEL_SSP_MSB BIT(1)
150
151/*
152 * when set the topology uses the -dmic<N>ch suffix, where N is determined based on
153 * BIOS or DMI information
154 */
155#define SND_SOC_ACPI_TPLG_INTEL_DMIC_NUMBER BIT(2)
156
157/*
158 * when set the speaker amplifier name suffix (i.e. "-max98360a") will be
159 * appended to topology file name
160 */
161#define SND_SOC_ACPI_TPLG_INTEL_AMP_NAME BIT(3)
162
163/*
164 * when set the headphone codec name suffix (i.e. "-rt5682") will be appended to
165 * topology file name
166 */
167#define SND_SOC_ACPI_TPLG_INTEL_CODEC_NAME BIT(4)
168
169/**
170 * snd_soc_acpi_mach: ACPI-based machine descriptor. Most of the fields are
171 * related to the hardware, except for the firmware and topology file names.
172 * A platform supported by legacy and Sound Open Firmware (SOF) would expose
173 * all firmware/topology related fields.
174 *
175 * @id: ACPI ID (usually the codec's) used to find a matching machine driver.
176 * @uid: ACPI Unique ID, can be used to disambiguate matches.
177 * @comp_ids: list of compatible audio codecs using the same machine driver,
178 * firmware and topology
179 * @link_mask: describes required board layout, e.g. for SoundWire.
180 * @links: array of link _ADR descriptors, null terminated.
181 * @drv_name: machine driver name
182 * @fw_filename: firmware file name. Used when SOF is not enabled.
183 * @tplg_filename: topology file name. Used when SOF is not enabled.
184 * @board: board name
185 * @machine_quirk: pointer to quirk, usually based on DMI information when
186 * ACPI ID alone is not sufficient, wrong or misleading
187 * @quirk_data: data used to uniquely identify a machine, usually a list of
188 * audio codecs whose presence if checked with ACPI
189 * @machine_check: pointer to quirk function. The functionality is similar to
190 * the use of @machine_quirk, except that the return value is a boolean: the intent
191 * is to skip a machine if the additional hardware/firmware verification invalidates
192 * the initial selection in the snd_soc_acpi_mach table.
193 * @pdata: intended for platform data or machine specific-ops. This structure
194 * is not constant since this field may be updated at run-time
195 * @sof_tplg_filename: Sound Open Firmware topology file name, if enabled
196 * @tplg_quirk_mask: quirks to select different topology files dynamically
197 * @get_function_tplg_files: This is an optional callback, if specified then instead of
198 * the single sof_tplg_filename the callback will return the list of function topology
199 * files to be loaded.
200 * Return value: The number of the files or negative ERRNO. 0 means that the single topology
201 * file should be used, no function topology split can be used on the machine.
202 * @card: the pointer of the card
203 * @mach: the pointer of the machine driver
204 * @prefix: the prefix of the topology file name. Typically, it is the path.
205 * @tplg_files: the pointer of the array of the topology file names.
206 */
207/* Descriptor for SST ASoC machine driver */
208struct snd_soc_acpi_mach {
209 u8 id[ACPI_ID_LEN];
210 const char *uid;
211 const struct snd_soc_acpi_codecs *comp_ids;
212 const u32 link_mask;
213 const struct snd_soc_acpi_link_adr *links;
214 const char *drv_name;
215 const char *fw_filename;
216 const char *tplg_filename;
217 const char *board;
218 struct snd_soc_acpi_mach * (*machine_quirk)(void *arg);
219 const void *quirk_data;
220 bool (*machine_check)(void *arg);
221 void *pdata;
222 struct snd_soc_acpi_mach_params mach_params;
223 const char *sof_tplg_filename;
224 const u32 tplg_quirk_mask;
225 int (*get_function_tplg_files)(struct snd_soc_card *card,
226 const struct snd_soc_acpi_mach *mach,
227 const char *prefix, const char ***tplg_files);
228};
229
230#define SND_SOC_ACPI_MAX_CODECS 3
231
232/**
233 * struct snd_soc_acpi_codecs: Structure to hold secondary codec information
234 * apart from the matched one, this data will be passed to the quirk function
235 * to match with the ACPI detected devices
236 *
237 * @num_codecs: number of secondary codecs used in the platform
238 * @codecs: holds the codec IDs
239 *
240 */
241struct snd_soc_acpi_codecs {
242 int num_codecs;
243 u8 codecs[SND_SOC_ACPI_MAX_CODECS][ACPI_ID_LEN];
244};
245
246static inline bool snd_soc_acpi_sof_parent(struct device *dev)
247{
248 return dev->parent && dev->parent->driver && dev->parent->driver->name &&
249 !strncmp(dev->parent->driver->name, "sof-audio-acpi", strlen("sof-audio-acpi"));
250}
251
252bool snd_soc_acpi_sdw_link_slaves_found(struct device *dev,
253 const struct snd_soc_acpi_link_adr *link,
254 struct sdw_peripherals *peripherals);
255
256#endif
257

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source code of linux/include/sound/soc-acpi.h