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Diffstat (limited to '')
| -rw-r--r-- | include/sound/soc-acpi.h | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/include/sound/soc-acpi.h b/include/sound/soc-acpi.h new file mode 100644 index 000000000..b16a844d1 --- /dev/null +++ b/include/sound/soc-acpi.h @@ -0,0 +1,174 @@ +/* SPDX-License-Identifier: GPL-2.0-only + * + * Copyright (C) 2013-15, Intel Corporation. All rights reserved. + */ + +#ifndef __LINUX_SND_SOC_ACPI_H +#define __LINUX_SND_SOC_ACPI_H + +#include <linux/stddef.h> +#include <linux/acpi.h> +#include <linux/mod_devicetable.h> + +struct snd_soc_acpi_package_context { + char *name; /* package name */ + int length; /* number of elements */ + struct acpi_buffer *format; + struct acpi_buffer *state; + bool data_valid; +}; + +/* codec name is used in DAIs is i2c-<HID>:00 with HID being 8 chars */ +#define SND_ACPI_I2C_ID_LEN (4 + ACPI_ID_LEN + 3 + 1) + +#if IS_ENABLED(CONFIG_ACPI) +/* acpi match */ +struct snd_soc_acpi_mach * +snd_soc_acpi_find_machine(struct snd_soc_acpi_mach *machines); + +bool snd_soc_acpi_find_package_from_hid(const u8 hid[ACPI_ID_LEN], + struct snd_soc_acpi_package_context *ctx); + +/* check all codecs */ +struct snd_soc_acpi_mach *snd_soc_acpi_codec_list(void *arg); + +#else +/* acpi match */ +static inline struct snd_soc_acpi_mach * +snd_soc_acpi_find_machine(struct snd_soc_acpi_mach *machines) +{ + return NULL; +} + +static inline bool +snd_soc_acpi_find_package_from_hid(const u8 hid[ACPI_ID_LEN], + struct snd_soc_acpi_package_context *ctx) +{ + return false; +} + +/* check all codecs */ +static inline struct snd_soc_acpi_mach *snd_soc_acpi_codec_list(void *arg) +{ + return NULL; +} +#endif + +/** + * snd_soc_acpi_mach_params: interface for machine driver configuration + * + * @acpi_ipc_irq_index: used for BYT-CR detection + * @platform: string used for HDAudio codec support + * @codec_mask: used for HDAudio support + * @common_hdmi_codec_drv: use commom HDAudio HDMI codec driver + * @link_mask: links enabled on the board + * @links: array of link _ADR descriptors, null terminated + */ +struct snd_soc_acpi_mach_params { + u32 acpi_ipc_irq_index; + const char *platform; + u32 codec_mask; + u32 dmic_num; + bool common_hdmi_codec_drv; + u32 link_mask; + const struct snd_soc_acpi_link_adr *links; +}; + +/** + * snd_soc_acpi_endpoint - endpoint descriptor + * @num: endpoint number (mandatory, unique per device) + * @aggregated: 0 (independent) or 1 (logically grouped) + * @group_position: zero-based order (only when @aggregated is 1) + * @group_id: platform-unique group identifier (only when @aggregrated is 1) + */ +struct snd_soc_acpi_endpoint { + u8 num; + u8 aggregated; + u8 group_position; + u8 group_id; +}; + +/** + * snd_soc_acpi_adr_device - descriptor for _ADR-enumerated device + * @adr: 64 bit ACPI _ADR value + * @num_endpoints: number of endpoints for this device + * @endpoints: array of endpoints + * @name_prefix: string used for codec controls + */ +struct snd_soc_acpi_adr_device { + const u64 adr; + const u8 num_endpoints; + const struct snd_soc_acpi_endpoint *endpoints; + const char *name_prefix; +}; + +/** + * snd_soc_acpi_link_adr - ACPI-based list of _ADR enumerated devices + * @mask: one bit set indicates the link this list applies to + * @num_adr: ARRAY_SIZE of devices + * @adr_d: array of devices + * + * The number of devices per link can be more than 1, e.g. in SoundWire + * multi-drop configurations. + */ + +struct snd_soc_acpi_link_adr { + const u32 mask; + const u32 num_adr; + const struct snd_soc_acpi_adr_device *adr_d; +}; + +/** + * snd_soc_acpi_mach: ACPI-based machine descriptor. Most of the fields are + * related to the hardware, except for the firmware and topology file names. + * A platform supported by legacy and Sound Open Firmware (SOF) would expose + * all firmware/topology related fields. + * + * @id: ACPI ID (usually the codec's) used to find a matching machine driver. + * @link_mask: describes required board layout, e.g. for SoundWire. + * @links: array of link _ADR descriptors, null terminated. + * @drv_name: machine driver name + * @fw_filename: firmware file name. Used when SOF is not enabled. + * @board: board name + * @machine_quirk: pointer to quirk, usually based on DMI information when + * ACPI ID alone is not sufficient, wrong or misleading + * @quirk_data: data used to uniquely identify a machine, usually a list of + * audio codecs whose presence if checked with ACPI + * @pdata: intended for platform data or machine specific-ops. This structure + * is not constant since this field may be updated at run-time + * @sof_fw_filename: Sound Open Firmware file name, if enabled + * @sof_tplg_filename: Sound Open Firmware topology file name, if enabled + */ +/* Descriptor for SST ASoC machine driver */ +struct snd_soc_acpi_mach { + const u8 id[ACPI_ID_LEN]; + const u32 link_mask; + const struct snd_soc_acpi_link_adr *links; + const char *drv_name; + const char *fw_filename; + const char *board; + struct snd_soc_acpi_mach * (*machine_quirk)(void *arg); + const void *quirk_data; + void *pdata; + struct snd_soc_acpi_mach_params mach_params; + const char *sof_fw_filename; + const char *sof_tplg_filename; +}; + +#define SND_SOC_ACPI_MAX_CODECS 3 + +/** + * struct snd_soc_acpi_codecs: Structure to hold secondary codec information + * apart from the matched one, this data will be passed to the quirk function + * to match with the ACPI detected devices + * + * @num_codecs: number of secondary codecs used in the platform + * @codecs: holds the codec IDs + * + */ +struct snd_soc_acpi_codecs { + int num_codecs; + u8 codecs[SND_SOC_ACPI_MAX_CODECS][ACPI_ID_LEN]; +}; + +#endif |