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/* 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
* @num_dai_drivers: number of elements in @dai_drivers
* @dai_drivers: pointer to dai_drivers, used e.g. in nocodec mode
*/
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;
u32 num_dai_drivers;
struct snd_soc_dai_driver *dai_drivers;
};
/**
* 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.
* @comp_ids: list of compatible audio codecs using the same machine driver,
* firmware and topology
* @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 {
u8 id[ACPI_ID_LEN];
const struct snd_soc_acpi_codecs *comp_ids;
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];
};
static inline bool snd_soc_acpi_sof_parent(struct device *dev)
{
return dev->parent && dev->parent->driver && dev->parent->driver->name &&
!strncmp(dev->parent->driver->name, "sof-audio-acpi", strlen("sof-audio-acpi"));
}
#endif
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