mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-07-27 15:40:10 -04:00
250922577e
It is possible that SDCAs devices might have multiple functions of the same type, as the entity names within a function are defined by the specification it is very likely such a device will have duplicate entities. This causes problems where DAIs and ALSA controls end up with clashing names. This can be handled by adding the function address into the names to ensure uniqueness, although, ideally this would have been included from the start. User-space already has UCM using the current control names, so as a compromise the first function of a given type will use the raw entity names, then duplicates will get an added function address. Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.dev> Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com> Link: https://patch.msgid.link/20260430150931.2025953-4-ckeepax@opensource.cirrus.com Signed-off-by: Mark Brown <broonie@kernel.org>
92 lines
2.5 KiB
C
92 lines
2.5 KiB
C
/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */
|
|
/*
|
|
* The MIPI SDCA specification is available for public downloads at
|
|
* https://www.mipi.org/mipi-sdca-v1-0-download
|
|
*
|
|
* Copyright(c) 2024 Intel Corporation
|
|
*/
|
|
|
|
#ifndef __SDCA_H__
|
|
#define __SDCA_H__
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/kconfig.h>
|
|
|
|
struct acpi_table_swft;
|
|
struct fwnode_handle;
|
|
struct sdw_slave;
|
|
struct sdca_dev;
|
|
|
|
#define SDCA_MAX_FUNCTION_COUNT 8
|
|
|
|
/**
|
|
* struct sdca_function_desc - short descriptor for an SDCA Function
|
|
* @node: firmware node for the Function.
|
|
* @func_dev: pointer to SDCA function device.
|
|
* @name: Human-readable string.
|
|
* @type: Function topology type.
|
|
* @adr: ACPI address (used for SDCA register access).
|
|
* @duplicate: Internal flag to indicate if other functions of the same type
|
|
* exist.
|
|
*/
|
|
struct sdca_function_desc {
|
|
struct fwnode_handle *node;
|
|
struct sdca_dev *func_dev;
|
|
const char *name;
|
|
u32 type;
|
|
u8 adr;
|
|
|
|
bool duplicate;
|
|
};
|
|
|
|
/**
|
|
* struct sdca_device_data - structure containing all SDCA related information
|
|
* @interface_revision: Value read from _DSD property, mainly to check
|
|
* for changes between silicon versions.
|
|
* @num_functions: Total number of supported SDCA functions. Invalid/unsupported
|
|
* functions will be skipped.
|
|
* @function: Array of function descriptors.
|
|
* @swft: Pointer to the SWFT table, if available.
|
|
*/
|
|
struct sdca_device_data {
|
|
u32 interface_revision;
|
|
int num_functions;
|
|
struct sdca_function_desc function[SDCA_MAX_FUNCTION_COUNT];
|
|
struct acpi_table_swft *swft;
|
|
};
|
|
|
|
enum sdca_quirk {
|
|
SDCA_QUIRKS_RT712_VB,
|
|
SDCA_QUIRKS_SKIP_FUNC_TYPE_PATCHING,
|
|
};
|
|
|
|
#if IS_ENABLED(CONFIG_ACPI) && IS_ENABLED(CONFIG_SND_SOC_SDCA)
|
|
|
|
void sdca_lookup_functions(struct sdw_slave *slave);
|
|
void sdca_lookup_swft(struct sdw_slave *slave);
|
|
void sdca_lookup_interface_revision(struct sdw_slave *slave);
|
|
bool sdca_device_quirk_match(struct sdw_slave *slave, enum sdca_quirk quirk);
|
|
int sdca_dev_register_functions(struct sdw_slave *slave);
|
|
void sdca_dev_unregister_functions(struct sdw_slave *slave);
|
|
|
|
#else
|
|
|
|
static inline void sdca_lookup_functions(struct sdw_slave *slave) {}
|
|
static inline void sdca_lookup_swft(struct sdw_slave *slave) {}
|
|
static inline void sdca_lookup_interface_revision(struct sdw_slave *slave) {}
|
|
static inline bool sdca_device_quirk_match(struct sdw_slave *slave, enum sdca_quirk quirk)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
static inline int sdca_dev_register_functions(struct sdw_slave *slave)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline void sdca_dev_unregister_functions(struct sdw_slave *slave) {}
|
|
|
|
#endif
|
|
|
|
#endif
|