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/* SPDX-License-Identifier: GPL-2.0 * * 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 */ 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; }; /** * 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. * @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 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
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