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Diffstat (limited to '')
| -rw-r--r-- | include/sound/soc-acpi.h | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/include/sound/soc-acpi.h b/include/sound/soc-acpi.h new file mode 100644 index 000000000..e45b2330d --- /dev/null +++ b/include/sound/soc-acpi.h @@ -0,0 +1,96 @@ +/* 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) +bool snd_soc_acpi_find_package_from_hid(const u8 hid[ACPI_ID_LEN], + struct snd_soc_acpi_package_context *ctx); +#else +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); + +/** + * 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 |