211 lines
6.4 KiB
C
211 lines
6.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only
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*
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* Copyright (C) 2013-15, Intel Corporation. All rights reserved.
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*/
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#ifndef __LINUX_SND_SOC_ACPI_H
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#define __LINUX_SND_SOC_ACPI_H
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#include <linux/stddef.h>
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#include <linux/acpi.h>
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#include <linux/mod_devicetable.h>
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struct snd_soc_acpi_package_context {
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char *name; /* package name */
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int length; /* number of elements */
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struct acpi_buffer *format;
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struct acpi_buffer *state;
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bool data_valid;
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};
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/* codec name is used in DAIs is i2c-<HID>:00 with HID being 8 chars */
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#define SND_ACPI_I2C_ID_LEN (4 + ACPI_ID_LEN + 3 + 1)
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#if IS_ENABLED(CONFIG_ACPI)
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/* acpi match */
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struct snd_soc_acpi_mach *
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snd_soc_acpi_find_machine(struct snd_soc_acpi_mach *machines);
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bool snd_soc_acpi_find_package_from_hid(const u8 hid[ACPI_ID_LEN],
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struct snd_soc_acpi_package_context *ctx);
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/* check all codecs */
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struct snd_soc_acpi_mach *snd_soc_acpi_codec_list(void *arg);
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#else
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/* acpi match */
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static inline struct snd_soc_acpi_mach *
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snd_soc_acpi_find_machine(struct snd_soc_acpi_mach *machines)
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{
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return NULL;
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}
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static inline bool
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snd_soc_acpi_find_package_from_hid(const u8 hid[ACPI_ID_LEN],
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struct snd_soc_acpi_package_context *ctx)
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{
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return false;
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}
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/* check all codecs */
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static inline struct snd_soc_acpi_mach *snd_soc_acpi_codec_list(void *arg)
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{
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return NULL;
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}
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#endif
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/**
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* snd_soc_acpi_mach_params: interface for machine driver configuration
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*
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* @acpi_ipc_irq_index: used for BYT-CR detection
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* @platform: string used for HDAudio codec support
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* @codec_mask: used for HDAudio support
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* @dmic_num: number of SoC- or chipset-attached PDM digital microphones
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* @common_hdmi_codec_drv: use commom HDAudio HDMI codec driver
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* @link_mask: SoundWire links enabled on the board
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* @links: array of SoundWire link _ADR descriptors, null terminated
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* @i2s_link_mask: I2S/TDM links enabled on the board
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* @num_dai_drivers: number of elements in @dai_drivers
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* @dai_drivers: pointer to dai_drivers, used e.g. in nocodec mode
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*/
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struct snd_soc_acpi_mach_params {
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u32 acpi_ipc_irq_index;
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const char *platform;
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u32 codec_mask;
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u32 dmic_num;
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bool common_hdmi_codec_drv;
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u32 link_mask;
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const struct snd_soc_acpi_link_adr *links;
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u32 i2s_link_mask;
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u32 num_dai_drivers;
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struct snd_soc_dai_driver *dai_drivers;
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};
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/**
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* snd_soc_acpi_endpoint - endpoint descriptor
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* @num: endpoint number (mandatory, unique per device)
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* @aggregated: 0 (independent) or 1 (logically grouped)
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* @group_position: zero-based order (only when @aggregated is 1)
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* @group_id: platform-unique group identifier (only when @aggregrated is 1)
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*/
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struct snd_soc_acpi_endpoint {
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u8 num;
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u8 aggregated;
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u8 group_position;
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u8 group_id;
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};
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/**
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* snd_soc_acpi_adr_device - descriptor for _ADR-enumerated device
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* @adr: 64 bit ACPI _ADR value
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* @num_endpoints: number of endpoints for this device
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* @endpoints: array of endpoints
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* @name_prefix: string used for codec controls
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*/
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struct snd_soc_acpi_adr_device {
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const u64 adr;
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const u8 num_endpoints;
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const struct snd_soc_acpi_endpoint *endpoints;
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const char *name_prefix;
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};
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/**
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* snd_soc_acpi_link_adr - ACPI-based list of _ADR enumerated devices
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* @mask: one bit set indicates the link this list applies to
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* @num_adr: ARRAY_SIZE of devices
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* @adr_d: array of devices
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*
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* The number of devices per link can be more than 1, e.g. in SoundWire
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* multi-drop configurations.
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*/
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struct snd_soc_acpi_link_adr {
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const u32 mask;
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const u32 num_adr;
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const struct snd_soc_acpi_adr_device *adr_d;
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};
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/*
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* when set the topology uses the -ssp<N> suffix, where N is determined based on
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* BIOS or DMI information
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*/
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#define SND_SOC_ACPI_TPLG_INTEL_SSP_NUMBER BIT(0)
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/*
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* when more than one SSP is reported in the link mask, use the most significant.
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* This choice was found to be valid on platforms with ES8336 codecs.
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*/
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#define SND_SOC_ACPI_TPLG_INTEL_SSP_MSB BIT(1)
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/*
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* when set the topology uses the -dmic<N>ch suffix, where N is determined based on
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* BIOS or DMI information
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*/
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#define SND_SOC_ACPI_TPLG_INTEL_DMIC_NUMBER BIT(2)
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/**
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* snd_soc_acpi_mach: ACPI-based machine descriptor. Most of the fields are
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* related to the hardware, except for the firmware and topology file names.
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* A platform supported by legacy and Sound Open Firmware (SOF) would expose
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* all firmware/topology related fields.
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*
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* @id: ACPI ID (usually the codec's) used to find a matching machine driver.
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* @comp_ids: list of compatible audio codecs using the same machine driver,
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* firmware and topology
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* @link_mask: describes required board layout, e.g. for SoundWire.
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* @links: array of link _ADR descriptors, null terminated.
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* @drv_name: machine driver name
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* @fw_filename: firmware file name. Used when SOF is not enabled.
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* @tplg_filename: topology file name. Used when SOF is not enabled.
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* @board: board name
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* @machine_quirk: pointer to quirk, usually based on DMI information when
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* ACPI ID alone is not sufficient, wrong or misleading
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* @quirk_data: data used to uniquely identify a machine, usually a list of
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* audio codecs whose presence if checked with ACPI
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* @pdata: intended for platform data or machine specific-ops. This structure
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* is not constant since this field may be updated at run-time
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* @sof_tplg_filename: Sound Open Firmware topology file name, if enabled
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* @tplg_quirk_mask: quirks to select different topology files dynamically
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*/
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/* Descriptor for SST ASoC machine driver */
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struct snd_soc_acpi_mach {
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u8 id[ACPI_ID_LEN];
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const struct snd_soc_acpi_codecs *comp_ids;
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const u32 link_mask;
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const struct snd_soc_acpi_link_adr *links;
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const char *drv_name;
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const char *fw_filename;
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const char *tplg_filename;
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const char *board;
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struct snd_soc_acpi_mach * (*machine_quirk)(void *arg);
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const void *quirk_data;
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void *pdata;
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struct snd_soc_acpi_mach_params mach_params;
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const char *sof_tplg_filename;
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const u32 tplg_quirk_mask;
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};
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#define SND_SOC_ACPI_MAX_CODECS 3
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/**
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* struct snd_soc_acpi_codecs: Structure to hold secondary codec information
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* apart from the matched one, this data will be passed to the quirk function
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* to match with the ACPI detected devices
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*
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* @num_codecs: number of secondary codecs used in the platform
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* @codecs: holds the codec IDs
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*
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*/
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struct snd_soc_acpi_codecs {
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int num_codecs;
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u8 codecs[SND_SOC_ACPI_MAX_CODECS][ACPI_ID_LEN];
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};
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static inline bool snd_soc_acpi_sof_parent(struct device *dev)
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{
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return dev->parent && dev->parent->driver && dev->parent->driver->name &&
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!strncmp(dev->parent->driver->name, "sof-audio-acpi", strlen("sof-audio-acpi"));
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}
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#endif
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