| 1 |
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| 2 | |
| 3 | * The MIPI SDCA specification is available for public downloads at
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| 4 | * https://www.mipi.org/mipi-sdca-v1-0-download
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| 5 | *
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| 6 | * Copyright(c) 2024 Intel Corporation
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| 7 |
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| 8 |
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| 9 | #ifndef __SDCA_H__
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| 10 | #define __SDCA_H__
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| 11 |
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| 12 | #include <linux/types.h>
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| 13 | #include <linux/kconfig.h>
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| 14 |
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| 15 | struct acpi_table_swft;
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| 16 | struct fwnode_handle;
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| 17 | struct sdw_slave;
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| 18 | struct sdca_dev;
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| 19 |
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| 20 | #define SDCA_MAX_FUNCTION_COUNT 8
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| 21 |
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| 22 | |
| 23 | * struct sdca_function_desc - short descriptor for an SDCA Function
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| 24 | * @node: firmware node for the Function.
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| 25 | * @func_dev: pointer to SDCA function device.
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| 26 | * @name: Human-readable string.
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| 27 | * @type: Function topology type.
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| 28 | * @adr: ACPI address (used for SDCA register access).
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| 29 | * @duplicate: Internal flag to indicate if other functions of the same type
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| 30 | * exist.
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| 31 |
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| 32 | struct sdca_function_desc {
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| 33 | struct fwnode_handle *node;
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| 34 | struct sdca_dev *func_dev;
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| 35 | const char *name;
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| 36 | u32 type;
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| 37 | u8 adr;
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| 38 |
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| 39 | bool duplicate;
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| 40 | };
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| 41 |
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| 42 | |
| 43 | * struct sdca_device_data - structure containing all SDCA related information
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| 44 | * @interface_revision: Value read from _DSD property, mainly to check
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| 45 | * for changes between silicon versions.
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| 46 | * @num_functions: Total number of supported SDCA functions. Invalid/unsupported
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| 47 | * functions will be skipped.
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| 48 | * @function: Array of function descriptors.
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| 49 | * @swft: Pointer to the SWFT table, if available.
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| 50 |
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| 51 | struct sdca_device_data {
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| 52 | u32 interface_revision;
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| 53 | int num_functions;
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| 54 | struct sdca_function_desc function[SDCA_MAX_FUNCTION_COUNT];
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| 55 | struct acpi_table_swft *swft;
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| 56 | };
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| 57 |
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| 58 | enum sdca_quirk {
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| 59 | SDCA_QUIRKS_RT712_VB,
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| 60 | SDCA_QUIRKS_SKIP_FUNC_TYPE_PATCHING,
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| 61 | };
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| 62 |
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| 63 | #if IS_ENABLED(CONFIG_ACPI) && IS_ENABLED(CONFIG_SND_SOC_SDCA)
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| 64 |
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| 65 | void sdca_lookup_functions(struct sdw_slave *slave);
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| 66 | void sdca_lookup_swft(struct sdw_slave *slave);
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| 67 | void sdca_lookup_interface_revision(struct sdw_slave *slave);
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| 68 | bool sdca_device_quirk_match(struct sdw_slave *slave, enum sdca_quirk quirk);
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| 69 | int sdca_dev_register_functions(struct sdw_slave *slave);
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| 70 | void sdca_dev_unregister_functions(struct sdw_slave *slave);
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| 71 |
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| 72 | #else
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| 73 |
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| 74 | static inline void sdca_lookup_functions(struct sdw_slave *slave) {}
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| 75 | static inline void sdca_lookup_swft(struct sdw_slave *slave) {}
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| 76 | static inline void sdca_lookup_interface_revision(struct sdw_slave *slave) {}
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| 77 | static inline bool sdca_device_quirk_match(struct sdw_slave *slave, enum sdca_quirk quirk)
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| 78 | {
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| 79 | return false;
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| 80 | }
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| 81 |
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| 82 | static inline int sdca_dev_register_functions(struct sdw_slave *slave)
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| 83 | {
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| 84 | return 0;
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| 85 | }
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| 86 |
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| 87 | static inline void sdca_dev_unregister_functions(struct sdw_slave *slave) {}
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| 88 |
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| 89 | #endif
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| 90 |
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| 91 | #endif
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