1 /* SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (C) 2013-15, Intel Corporation. All rights reserved.
6 #ifndef __LINUX_SND_SOC_ACPI_H
7 #define __LINUX_SND_SOC_ACPI_H
9 #include <linux/stddef.h>
10 #include <linux/acpi.h>
11 #include <linux/mod_devicetable.h>
12 #include <linux/soundwire/sdw.h>
14 struct snd_soc_acpi_package_context {
15 char *name; /* package name */
16 int length; /* number of elements */
17 struct acpi_buffer *format;
18 struct acpi_buffer *state;
22 /* codec name is used in DAIs is i2c-<HID>:00 with HID being 8 chars */
23 #define SND_ACPI_I2C_ID_LEN (4 + ACPI_ID_LEN + 3 + 1)
25 #if IS_ENABLED(CONFIG_ACPI)
27 struct snd_soc_acpi_mach *
28 snd_soc_acpi_find_machine(struct snd_soc_acpi_mach *machines);
30 bool snd_soc_acpi_find_package_from_hid(const u8 hid[ACPI_ID_LEN],
31 struct snd_soc_acpi_package_context *ctx);
33 /* check all codecs */
34 struct snd_soc_acpi_mach *snd_soc_acpi_codec_list(void *arg);
38 static inline struct snd_soc_acpi_mach *
39 snd_soc_acpi_find_machine(struct snd_soc_acpi_mach *machines)
45 snd_soc_acpi_find_package_from_hid(const u8 hid[ACPI_ID_LEN],
46 struct snd_soc_acpi_package_context *ctx)
51 /* check all codecs */
52 static inline struct snd_soc_acpi_mach *snd_soc_acpi_codec_list(void *arg)
59 * snd_soc_acpi_mach_params: interface for machine driver configuration
61 * @acpi_ipc_irq_index: used for BYT-CR detection
62 * @platform: string used for HDAudio codec support
63 * @codec_mask: used for HDAudio support
64 * @dmic_num: number of SoC- or chipset-attached PDM digital microphones
65 * @common_hdmi_codec_drv: use commom HDAudio HDMI codec driver
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
72 struct snd_soc_acpi_mach_params {
73 u32 acpi_ipc_irq_index;
77 bool common_hdmi_codec_drv;
79 const struct snd_soc_acpi_link_adr *links;
82 struct snd_soc_dai_driver *dai_drivers;
86 * snd_soc_acpi_endpoint - endpoint descriptor
87 * @num: endpoint number (mandatory, unique per device)
88 * @aggregated: 0 (independent) or 1 (logically grouped)
89 * @group_position: zero-based order (only when @aggregated is 1)
90 * @group_id: platform-unique group identifier (only when @aggregrated is 1)
92 struct snd_soc_acpi_endpoint {
100 * snd_soc_acpi_adr_device - descriptor for _ADR-enumerated device
101 * @adr: 64 bit ACPI _ADR value
102 * @num_endpoints: number of endpoints for this device
103 * @endpoints: array of endpoints
104 * @name_prefix: string used for codec controls
106 struct snd_soc_acpi_adr_device {
108 const u8 num_endpoints;
109 const struct snd_soc_acpi_endpoint *endpoints;
110 const char *name_prefix;
114 * snd_soc_acpi_link_adr - ACPI-based list of _ADR enumerated devices
115 * @mask: one bit set indicates the link this list applies to
116 * @num_adr: ARRAY_SIZE of devices
117 * @adr_d: array of devices
119 * The number of devices per link can be more than 1, e.g. in SoundWire
120 * multi-drop configurations.
123 struct snd_soc_acpi_link_adr {
126 const struct snd_soc_acpi_adr_device *adr_d;
130 * when set the topology uses the -ssp<N> suffix, where N is determined based on
131 * BIOS or DMI information
133 #define SND_SOC_ACPI_TPLG_INTEL_SSP_NUMBER BIT(0)
136 * when more than one SSP is reported in the link mask, use the most significant.
137 * This choice was found to be valid on platforms with ES8336 codecs.
139 #define SND_SOC_ACPI_TPLG_INTEL_SSP_MSB BIT(1)
142 * when set the topology uses the -dmic<N>ch suffix, where N is determined based on
143 * BIOS or DMI information
145 #define SND_SOC_ACPI_TPLG_INTEL_DMIC_NUMBER BIT(2)
148 * snd_soc_acpi_mach: ACPI-based machine descriptor. Most of the fields are
149 * related to the hardware, except for the firmware and topology file names.
150 * A platform supported by legacy and Sound Open Firmware (SOF) would expose
151 * all firmware/topology related fields.
153 * @id: ACPI ID (usually the codec's) used to find a matching machine driver.
154 * @uid: ACPI Unique ID, can be used to disambiguate matches.
155 * @comp_ids: list of compatible audio codecs using the same machine driver,
156 * firmware and topology
157 * @link_mask: describes required board layout, e.g. for SoundWire.
158 * @links: array of link _ADR descriptors, null terminated.
159 * @drv_name: machine driver name
160 * @fw_filename: firmware file name. Used when SOF is not enabled.
161 * @tplg_filename: topology file name. Used when SOF is not enabled.
163 * @machine_quirk: pointer to quirk, usually based on DMI information when
164 * ACPI ID alone is not sufficient, wrong or misleading
165 * @quirk_data: data used to uniquely identify a machine, usually a list of
166 * audio codecs whose presence if checked with ACPI
167 * @pdata: intended for platform data or machine specific-ops. This structure
168 * is not constant since this field may be updated at run-time
169 * @sof_tplg_filename: Sound Open Firmware topology file name, if enabled
170 * @tplg_quirk_mask: quirks to select different topology files dynamically
172 /* Descriptor for SST ASoC machine driver */
173 struct snd_soc_acpi_mach {
176 const struct snd_soc_acpi_codecs *comp_ids;
178 const struct snd_soc_acpi_link_adr *links;
179 const char *drv_name;
180 const char *fw_filename;
181 const char *tplg_filename;
183 struct snd_soc_acpi_mach * (*machine_quirk)(void *arg);
184 const void *quirk_data;
186 struct snd_soc_acpi_mach_params mach_params;
187 const char *sof_tplg_filename;
188 const u32 tplg_quirk_mask;
191 #define SND_SOC_ACPI_MAX_CODECS 3
194 * struct snd_soc_acpi_codecs: Structure to hold secondary codec information
195 * apart from the matched one, this data will be passed to the quirk function
196 * to match with the ACPI detected devices
198 * @num_codecs: number of secondary codecs used in the platform
199 * @codecs: holds the codec IDs
202 struct snd_soc_acpi_codecs {
204 u8 codecs[SND_SOC_ACPI_MAX_CODECS][ACPI_ID_LEN];
207 static inline bool snd_soc_acpi_sof_parent(struct device *dev)
209 return dev->parent && dev->parent->driver && dev->parent->driver->name &&
210 !strncmp(dev->parent->driver->name, "sof-audio-acpi", strlen("sof-audio-acpi"));
213 bool snd_soc_acpi_sdw_link_slaves_found(struct device *dev,
214 const struct snd_soc_acpi_link_adr *link,
215 struct sdw_extended_slave_id *ids,