From 7feb2f786a46d34cac760d5e246dfbdafafa0e96 Mon Sep 17 00:00:00 2001 From: Pierre-Louis Bossart Date: Thu, 12 Oct 2017 18:49:38 -0500 Subject: ASoC: move ACPI common code out of Intel/sst tree ACPI support is not specific to the Intel/SST driver. Move the enumeration and matching code which is not hardware-dependent to sound/soc and rename relevant sst_acpi_ structures and functions with snd_soc_acpi_ prefix soc-acpi.h is protected by a #ifndef __LINUX_SND_SOC_ACPI_H for consistency with all other SoC .h files: grep -L __LINUX include/sound/soc* | wc -l 0 grep __LINUX include/sound/soc* | wc -l 14 Signed-off-by: Pierre-Louis Bossart Acked-by: Liam Girdwood Signed-off-by: Mark Brown --- include/sound/soc-acpi.h | 100 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 100 insertions(+) create mode 100644 include/sound/soc-acpi.h (limited to 'include/sound/soc-acpi.h') diff --git a/include/sound/soc-acpi.h b/include/sound/soc-acpi.h new file mode 100644 index 000000000000..918d78e8c8d6 --- /dev/null +++ b/include/sound/soc-acpi.h @@ -0,0 +1,100 @@ +/* + * 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 +#include + +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; +}; + +#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. + * + * @id: ACPI ID (usually the codec's) used to find a matching machine driver. + * @drv_name: machine driver name + * @fw_filename: firmware file name. + * @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 + */ +/* 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; +}; + +#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 -- cgit v1.2.3-59-g8ed1b