Edit File: soc-acpi.h
/* * Copyright (C) 2013-15, Intel Corporation. All rights reserved. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License version * 2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * */ #ifndef __LINUX_SND_SOC_ACPI_H #define __LINUX_SND_SOC_ACPI_H #include <linux/stddef.h> #include <linux/acpi.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) /* translation fron HID to I2C name, needed for DAI codec_name */ const char *snd_soc_acpi_find_name_from_hid(const u8 hid[ACPI_ID_LEN]); bool snd_soc_acpi_find_package_from_hid(const u8 hid[ACPI_ID_LEN], struct snd_soc_acpi_package_context *ctx); #else static inline const char * snd_soc_acpi_find_name_from_hid(const u8 hid[ACPI_ID_LEN]) { 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; } #endif /* acpi match */ struct snd_soc_acpi_mach * snd_soc_acpi_find_machine(struct snd_soc_acpi_mach *machines); /* acpi check hid */ bool snd_soc_acpi_check_hid(const u8 hid[ACPI_ID_LEN]); /** * 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 * @asoc_plat_name: ASoC platform name, used for binding machine drivers * if non NULL * @new_mach_data: machine driver private data fixup */ /* 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; const char *sof_fw_filename; const char *sof_tplg_filename; const char *asoc_plat_name; struct platform_device * (*new_mach_data)(void *pdata); }; #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]; }; /* check all codecs */ struct snd_soc_acpi_mach *snd_soc_acpi_codec_list(void *arg); #endif