/* SPDX-License-Identifier: GPL-2.0-only */ /* * This header implements structures to describe the properties defined in the * SoundWire Discovery and Configuration (DisCo) Specification Version 1.0. * * This is available for non-members after providing a name and email address at * https://resources.mipi.org/disco_soundwire * * The structure members mirror the property names defined in the specification, * with the exception that '-' is transformed into '_' for compatible naming. * * See Documentation/drivers/soundwire.md for more information. */ #ifndef __DEVICE_SOUNDWIRE_H__ #define __DEVICE_SOUNDWIRE_H__ #include /** * enum soundwire_limits - Limits on number of SoundWire devices in topology. * @SOUNDWIRE_MAX: Maximum value for lists of configuration values in SoundWire devices. * @SOUNDWIRE_MIN_DPN: Data Port minimum value. DPn range is 1-14. * @SOUNDWIRE_MAX_DPN: Data Port maximum value. DPn range is 1-14. * @SOUNDWIRE_MAX_SLAVE: Maximum number of slave devices that can be attached to one master. * @SOUNDWIRE_MAX_LINK: Maximum number of master link devices that can be on one controller. * @SOUNDWIRE_MAX_LANE: Maximum number of lanes in a multi-lane slave device. * @SOUNDWIRE_MAX_MODE: Maximum number of Audio or Bulk Register Access modes. */ enum soundwire_limits { SOUNDWIRE_MAX = 32, SOUNDWIRE_MIN_DPN = 1, SOUNDWIRE_MAX_DPN = 14, SOUNDWIRE_MAX_SLAVE = 11, SOUNDWIRE_MAX_LINK = 8, SOUNDWIRE_MAX_LANE = 8, SOUNDWIRE_MAX_MODE = 4 }; /** * enum soundwire_sw_version - Versions of SoundWire Discovery and Configuration Specification. * @SOUNDWIRE_SW_VERSION_1_0: DisCo Specification Version 1.0 released November 2016. */ enum soundwire_sw_version { SOUNDWIRE_SW_VERSION_1_0 = 0x00010000 }; /** * enum soundwire_version - Versions of SoundWire Specification supported by a device. * @SOUNDWIRE_VERSION_1_0: SoundWire Specification Version 1.0 released January 2015. * @SOUNDWIRE_VERSION_1_1: SoundWire Specification Version 1.1 released June 2016. * @SOUNDWIRE_VERSION_1_2: SoundWire Specification Version 1.2 released April 2019. */ enum soundwire_version { SOUNDWIRE_VERSION_1_0 = 1, SOUNDWIRE_VERSION_1_1, SOUNDWIRE_VERSION_1_2 }; /** * enum mipi_class - MIPI class encoding. * @MIPI_CLASS_NONE: No further class decoding. * @MIPI_CLASS_SDCA: Device implements SoundWire Device Class for Audio (SDCA). * * 0x02-0x7F: Reserved * 0x80-0xFF: MIPI Alliance extended device class */ enum mipi_class { MIPI_CLASS_NONE, MIPI_CLASS_SDCA }; /** * struct soundwire_address - SoundWire Device Address Encoding. * @version: SoundWire specification version from &enum soundwire_version. * @link_id: Zero-based SoundWire master link id. * @unique_id: Unique ID for multiple slave devices on the same bus. * @manufacturer_id: Manufacturer ID from include/mipi/ids.h. * @part_id: Vendor defined part ID. * @class: MIPI class encoding in &enum mipi_class. */ struct soundwire_address { enum soundwire_version version; uint8_t link_id; uint8_t unique_id; uint16_t manufacturer_id; uint16_t part_id; enum mipi_class class; }; /** * struct soundwire_link - SoundWire master device properties. * @clock_stop_mode0_supported: %true if clock stop mode0 is supported by this device. * @clock_stop_mode1_supported: %true if clock stop mode1 is supported by this device. * @max_clock_frequency: Maximum bus clock for this device in Hz. * @supported_clock_gears_count: Number of entries in supported_clock_gears. * @supported_clock_gears: One entry for each supported clock gear. * @clock_frequencies_supported_count: Number of entries in clock_frequencies_supported. * @clock_frequencies_supported: One entry for each clock frequency supported in Hz. * @default_frame_rate: Controller default frame rate in Hz. * @default_frame_row_size: Number of rows between 48-256. * @default_frame_col_size: Number of columns: 2, 4, 8, 16. * @dynamic_frame_shape: %true if bus driver may change frame shape dynamically. * @command_error_threshold: Number of times that software may retry sending a command. */ struct soundwire_link { bool clock_stop_mode0_supported; bool clock_stop_mode1_supported; unsigned int max_clock_frequency; size_t supported_clock_gears_count; unsigned int supported_clock_gears[SOUNDWIRE_MAX]; size_t clock_frequencies_supported_count; uint64_t clock_frequencies_supported[SOUNDWIRE_MAX]; unsigned int default_frame_rate; unsigned int default_frame_row_size; unsigned int default_frame_col_size; bool dynamic_frame_shape; unsigned int command_error_threshold; }; /** * struct soundwire_controller - SoundWire controller properties. * @master_count: Number of masters present on this device. * @master_list: One entry for each master device. */ struct soundwire_controller { unsigned int master_list_count; struct soundwire_link master_list[SOUNDWIRE_MAX_LINK]; }; /* SoundWire port bitmask, used for slave source/sink port list property. */ #define SOUNDWIRE_PORT(port) BIT(port) /** * struct soundwire_slave - SoundWire slave device properties. * @wake_up_unavailable: Wake from this device is not supported or allowed. * @test_mode_supported: %true if test mode is supported by this device. * @clock_stop_mode1_supported: %true if clock stop mode1 is supported by this device. * @simplified_clockstopprepare_sm_supported: %true if slave only supports the simplified * clock stop prepare state machine and will * always be ready for a stop clock transition. * @clockstopprepare_timeout: Slave-specific timeout in milliseconds. * @clockstopprepare_hard_reset_behavior: %true when slave keeps the status of the * StopClockPrepare state machine after exit from * mode1 and must be de-prepared by software. * @slave_channelprepare_timeout: Slave-specific timeout in milliseconds. * @highPHY_capable: %true if device is HighPHY capable. * @paging_supported: %true if device implements paging registers. * @bank_delay_supported: %true if device implements bank delay/bridge registers. * @port15_read_behavior: %true if device supports read to Port15 alias. * @master_count: Number of master links present on this slave. * @source_port_list: Bitmap identifying supported source ports, starting at bit 1. * @sink_port_list: Bitmap identifying supported sink ports, starting at bit 1. */ struct soundwire_slave { bool wake_up_unavailable; bool test_mode_supported; bool clock_stop_mode1_supported; bool simplified_clockstopprepare_sm_supported; unsigned int clockstopprepare_timeout; bool clockstopprepare_hard_reset_behavior; unsigned int slave_channelprepare_timeout; bool highPHY_capable; bool paging_supported; bool bank_delay_supported; bool port15_read_behavior; size_t master_count; uint32_t source_port_list; uint32_t sink_port_list; }; /** * enum soundwire_multilane_dir - Direction of lane in slave multilane device. * @MASTER_LANE: Lane is connected to a master device. * @SLAVE_LINK: Lane is connected to a slave device. */ enum soundwire_multilane_dir { MASTER_LANE, SLAVE_LINK, }; /** * struct soundwire_multilane_map - Pair a soundwire lane with direction. * @lane: Slave device lane number. * @direction: Direction of the slave lane. * @connection: The connection that this lane makes. */ struct soundwire_multilane_map { unsigned int lane; enum soundwire_multilane_dir direction; union lane_type { unsigned int master_lane; unsigned int slave_link; } connection; }; /** * struct soundwire_multilane - Multi-Lane SoundWire slave device. * @lane_mapping_count: Number of entries in lane_mapping. * @lane_mapping: One entry for each lane that is connected to lanes on a master device or * slave devices via a slave link. Lane 0 is always connected to the master * and entry 0 in this array is ignored. * @lane_bus_holder_count: Number of entries in lane_bus_holder. * @lane_bus_holder: One entry for each lane, %true if the device behaves as a bus holder. */ struct soundwire_multilane { size_t lane_mapping_count; struct soundwire_multilane_map lane_mapping[SOUNDWIRE_MAX_LANE]; size_t lane_bus_holder_count; bool lane_bus_holder[SOUNDWIRE_MAX_LANE]; }; /** * enum soundwire_prepare_channel_behavior - Specifies the dependencies between the * Channel Prepare sequence and bus clock config. * @CHANNEL_PREPARE_ANY_FREQUENCY: Channel Prepare can happen at any bus clock rate. * @CHANNEL_PREPARE_SUPPORTED_FREQUENCY: Channel Prepare sequence shall happen only after * the bus clock is changed to a supported frequency. */ enum soundwire_prepare_channel_behavior { CHANNEL_PREPARE_ANY_FREQUENCY, CHANNEL_PREPARE_SUPPORTED_FREQUENCY }; /** * struct soundwire_audio_mode - Properties for each supported Audio Mode. * @sdw_name: SoundWire device name for this audio mode device instance. * @max_bus_frequency: Maximum bus frequency of this mode in Hz. * @min_bus_frequency: Minimum bus frequency of this mode in Hz. * @bus_frequency_configs_count: Number of entries in bus_frequency_configs. * @bus_frequency_configs: One entry for each supported bus frequency, * if not all values in min to max range are valid. * @max_sampling_frequency: Maximum sampling frequency of this mode in Hz. * @min_sampling_frequency: Minimum sampling frequency of this mode in Hz. * @sampling_frequency_configs_count: Number of entries in sampling_frequency_configs. * @sampling_frequency_configs: One entry for each supported sampling frequency, * if not all values in min to max range are valid. * @prepare_channel_behavior: Dependencies between Channel Prepare and bus clock. * @glitchless_transitions: Bitmap describing possible glitchless transitions from this audio * mode to another audio mode. Not used for only one mode. */ struct soundwire_audio_mode { unsigned int max_bus_frequency; unsigned int min_bus_frequency; size_t bus_frequency_configs_count; uint64_t bus_frequency_configs[SOUNDWIRE_MAX]; unsigned int max_sampling_frequency; unsigned int min_sampling_frequency; size_t sampling_frequency_configs_count; uint64_t sampling_frequency_configs[SOUNDWIRE_MAX]; enum soundwire_prepare_channel_behavior prepare_channel_behavior; uint32_t glitchless_transitions; }; /* Type of SoundWire Data Port supported for this device. */ enum soundwire_data_port_type { FULL_DATA_PORT, SIMPLIFIED_DATA_PORT, REDUCED_DATA_PORT }; /* Number of samples that can be grouped together (0-based count). */ enum soundwire_block_group_count { BLOCK_GROUP_COUNT_1, BLOCK_GROUP_COUNT_2, BLOCK_GROUP_COUNT_3, BLOCK_GROUP_COUNT_4 }; /* Bitmap identifying the types of modes supported. */ enum soundwire_mode_bitmap { MODE_ISOCHRONOUS = BIT(0), MODE_TX_CONTROLLED = BIT(1), MODE_RX_CONTROLLED = BIT(2), MODE_FULL_ASYNCHRONOUS = BIT(3) }; /* Bitmap identifying the encoding schemes supported. */ enum soundwire_port_encoding_bitmap { ENCODE_TWOS_COMPLEMENT = BIT(0), ENCODE_SIGN_MAGNITUDE = BIT(1), ENCODE_IEEE_32BIT_FP = BIT(2) }; /** * struct soundwire_dpn - Configuration properties for SoundWire DPn Data Ports. * @port_max_wordlength: Maximum number of bits in a Payload Channel Sample. (1-64) * @port_min_wordlength: Minimum number of bits in a Payload Channel Sample. (1-64) * @port_wordlength_configs_count: Number of entries in port_wordlength_configs. * @port_wordlength_configs: One entry for each supported wordlength. * Used if only specific wordlength values are allowed. * @data_port_type: Type of data port from &enum soundwire_data_port_type. * @max_grouping_supported: 0-based maximum number of samples that can be grouped for * %FULL_DATA_PORT. The %SIMPLIFIED_DATA_PORT and %REDUCED_DATA_PORT * require 4 samples in a group. * @simplified_channelprepare_sm: %true if the channel prepare sequence is not required, * and the Port Ready interrupt is not supported. * @port_channelprepare_timeout: Port-specific timeout value in milliseconds. * @imp_def_dpn_interrupts_supported: Bitmap for support of implementation-defined interrupts. * @min_channel_number: Minimum channel number supported. * @max_channel_number: Maximum channel number supported. * @channel_number_list_count: Number of entries in channel_number_list. * @channel_number_list: One entry for each available channel number. * Used if only specific channels are available. * @channel_combination_list_count: Number of entries in channel_combination_list. * @channel_combination_list: One bitmap entry for each valid channel combination. * @modes_supported: Bitmap identifying the types of modes supported by the device. * @max_async_buffer: Number of samples that this port can buffer in asynchronous modes. * Only required if the slave implements buffer larger than required. * @block_packing_mode: %true if BlockPackingMode may be configured as BlockPerPort or * BlocKPerChannel. %false if BlockPackingMode must be BlockPerPort. * @port_encoding_type: Bitmap describing the types of Payload Channel Sample encoding * schemes implemented by this port. * @port_audio_mode_count: Number of entries in audio_mode_list. * @port_audio_mode_list: One entry for each supported audio mode id. */ struct soundwire_dpn { unsigned int port_max_wordlength; unsigned int port_min_wordlength; size_t port_wordlength_configs_count; uint64_t port_wordlength_configs[SOUNDWIRE_MAX]; enum soundwire_data_port_type data_port_type; enum soundwire_block_group_count max_grouping_supported; bool simplified_channelprepare_sm; unsigned int port_channelprepare_timeout; uint32_t imp_def_dpn_interrupts_supported; unsigned int min_channel_number; unsigned int max_channel_number; size_t channel_number_list_count; uint64_t channel_number_list[SOUNDWIRE_MAX]; size_t channel_combination_list_count; uint64_t channel_combination_list[SOUNDWIRE_MAX]; enum soundwire_mode_bitmap modes_supported; unsigned int max_async_buffer; bool block_packing_mode; uint32_t port_encoding_type; size_t port_audio_mode_count; unsigned int port_audio_mode_list[SOUNDWIRE_MAX_MODE]; }; /** * struct soundwire_bra_mode - Bulk Register Access mode properties. * @max_bus_frequency: Maximum bus frequency of this mode in Hz. * @min_bus_frequency: Minimum bus frequency of this mode in Hz. * @bus_frequency_configs_count: Number of entries in bus_frequency_configs. * @bus_frequency_configs: One entry for each supported bus frequency, * Used if not all values in min to max range are valid. * @max_data_per_frame: Maximum data bytes per frame, excluding header, CRC, and footer. * @min_us_between_transactions: Amount of delay in uS required between transactions. * @max_bandwidth: Maximum bandwidth in bytes per second that can be written/read. * @block_alignment: Size of basic block in bytes. */ struct soundwire_bra_mode { unsigned int max_bus_frequency; unsigned int min_bus_frequency; size_t bus_frequency_configs_count; uint64_t bus_frequency_configs[SOUNDWIRE_MAX]; unsigned int max_data_per_frame; unsigned int min_us_between_transactions; unsigned int max_bandwidth; unsigned int block_alignment; }; /** * struct soundwire_dp0 - Configuration properties for SoundWire DP0 Data Port. * @port_max_wordlength: Maximum number of bits in a Payload Channel Sample. (1-64) * @port_min_wordlength: Minimum number of bits in a Payload Channel Sample. (1-64) * @port_wordlength_configs_count: Number of entries in port_wordlength_configs. * @port_wordlength_configs: One entry for each supported wordlength. * Used if only specific wordlength values are allowed. * @bra_flow_controlled: Used if the slave can result in an OK_NotReady response. * @bra_imp_def_response_supported: %true if implementation defined response is supported. * @bra_role_supported: %true if the slave supports initiating BRA transactions. * @simplified_channel_prepare_sm: %true if the channel prepare sequence is not required, * and the Port Ready interrupt is not supported. * @imp_def_dp0_interrupts_supported: If set, each bit corresponds to support for * implementation-defined interrupts ImpDef. * @imp_def_bpt_supported: %true if implementation defined Payload Type is supported. * @bra_mode_count: Number of entries in bra_mode_list. * @bra_mode_list: One entry for each supported Bulk Register Access mode id. */ struct soundwire_dp0 { unsigned int port_max_wordlength; unsigned int port_min_wordlength; size_t port_wordlength_configs_count; uint64_t port_wordlength_configs[SOUNDWIRE_MAX]; bool bra_flow_controlled; bool bra_imp_def_response_supported; bool bra_role_supported; bool simplified_channel_prepare_sm; unsigned int imp_def_dp0_interrupts_supported; bool imp_def_bpt_supported; size_t bra_mode_count; unsigned int bra_mode_list[SOUNDWIRE_MAX_MODE]; }; /** * struct soundwire_dpn_entry - Full duplex data port properties for DPn 1-14. * @port: DPn data port number, starting at 1. * @source: Source data port properties. (optional) * @sink: Sink data port properties. (optional) */ struct soundwire_dpn_entry { size_t port; struct soundwire_dpn *source; struct soundwire_dpn *sink; }; /** * struct soundwire_codec - Contains all configuration for a SoundWire codec slave device. * @slave: Properties for slave device. * @audio_mode: Properties for audio modes used by DPn data ports 1-14. * @dpn: Properties for DPn data ports 1-14. * @dp0_bra_mode: Properties for Bulk Register Access mode for data port 0. (optional) * @dp0: Properties for data port 0. (optional) * @multilane: Properties for slave multilane device. (optional) */ struct soundwire_codec { struct soundwire_slave *slave; struct soundwire_audio_mode *audio_mode[SOUNDWIRE_MAX_MODE]; struct soundwire_dpn_entry dpn[SOUNDWIRE_MAX_DPN]; struct soundwire_bra_mode *dp0_bra_mode[SOUNDWIRE_MAX_MODE]; struct soundwire_dp0 *dp0; struct soundwire_multilane *multilane; }; #endif /* __DEVICE_SOUNDWIRE_H__ */