1050 строки
32 KiB
C
1050 строки
32 KiB
C
/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
|
|
/* Copyright(c) 2015-17 Intel Corporation. */
|
|
|
|
#ifndef __SOUNDWIRE_H
|
|
#define __SOUNDWIRE_H
|
|
|
|
#include <linux/mod_devicetable.h>
|
|
#include <linux/bitfield.h>
|
|
|
|
struct sdw_bus;
|
|
struct sdw_slave;
|
|
|
|
/* SDW spec defines and enums, as defined by MIPI 1.1. Spec */
|
|
|
|
/* SDW Broadcast Device Number */
|
|
#define SDW_BROADCAST_DEV_NUM 15
|
|
|
|
/* SDW Enumeration Device Number */
|
|
#define SDW_ENUM_DEV_NUM 0
|
|
|
|
/* SDW Group Device Numbers */
|
|
#define SDW_GROUP12_DEV_NUM 12
|
|
#define SDW_GROUP13_DEV_NUM 13
|
|
|
|
/* SDW Master Device Number, not supported yet */
|
|
#define SDW_MASTER_DEV_NUM 14
|
|
|
|
#define SDW_NUM_DEV_ID_REGISTERS 6
|
|
/* frame shape defines */
|
|
|
|
/*
|
|
* Note: The maximum row define in SoundWire spec 1.1 is 23. In order to
|
|
* fill hole with 0, one more dummy entry is added
|
|
*/
|
|
#define SDW_FRAME_ROWS 24
|
|
#define SDW_FRAME_COLS 8
|
|
#define SDW_FRAME_ROW_COLS (SDW_FRAME_ROWS * SDW_FRAME_COLS)
|
|
|
|
#define SDW_FRAME_CTRL_BITS 48
|
|
#define SDW_MAX_DEVICES 11
|
|
|
|
#define SDW_MAX_PORTS 15
|
|
#define SDW_VALID_PORT_RANGE(n) ((n) < SDW_MAX_PORTS && (n) >= 1)
|
|
|
|
enum {
|
|
SDW_PORT_DIRN_SINK = 0,
|
|
SDW_PORT_DIRN_SOURCE,
|
|
SDW_PORT_DIRN_MAX,
|
|
};
|
|
|
|
/*
|
|
* constants for flow control, ports and transport
|
|
*
|
|
* these are bit masks as devices can have multiple capabilities
|
|
*/
|
|
|
|
/*
|
|
* flow modes for SDW port. These can be isochronous, tx controlled,
|
|
* rx controlled or async
|
|
*/
|
|
#define SDW_PORT_FLOW_MODE_ISOCH 0
|
|
#define SDW_PORT_FLOW_MODE_TX_CNTRL BIT(0)
|
|
#define SDW_PORT_FLOW_MODE_RX_CNTRL BIT(1)
|
|
#define SDW_PORT_FLOW_MODE_ASYNC GENMASK(1, 0)
|
|
|
|
/* sample packaging for block. It can be per port or per channel */
|
|
#define SDW_BLOCK_PACKG_PER_PORT BIT(0)
|
|
#define SDW_BLOCK_PACKG_PER_CH BIT(1)
|
|
|
|
/**
|
|
* enum sdw_slave_status - Slave status
|
|
* @SDW_SLAVE_UNATTACHED: Slave is not attached with the bus.
|
|
* @SDW_SLAVE_ATTACHED: Slave is attached with bus.
|
|
* @SDW_SLAVE_ALERT: Some alert condition on the Slave
|
|
* @SDW_SLAVE_RESERVED: Reserved for future use
|
|
*/
|
|
enum sdw_slave_status {
|
|
SDW_SLAVE_UNATTACHED = 0,
|
|
SDW_SLAVE_ATTACHED = 1,
|
|
SDW_SLAVE_ALERT = 2,
|
|
SDW_SLAVE_RESERVED = 3,
|
|
};
|
|
|
|
/**
|
|
* enum sdw_clk_stop_type: clock stop operations
|
|
*
|
|
* @SDW_CLK_PRE_PREPARE: pre clock stop prepare
|
|
* @SDW_CLK_POST_PREPARE: post clock stop prepare
|
|
* @SDW_CLK_PRE_DEPREPARE: pre clock stop de-prepare
|
|
* @SDW_CLK_POST_DEPREPARE: post clock stop de-prepare
|
|
*/
|
|
enum sdw_clk_stop_type {
|
|
SDW_CLK_PRE_PREPARE = 0,
|
|
SDW_CLK_POST_PREPARE,
|
|
SDW_CLK_PRE_DEPREPARE,
|
|
SDW_CLK_POST_DEPREPARE,
|
|
};
|
|
|
|
/**
|
|
* enum sdw_command_response - Command response as defined by SDW spec
|
|
* @SDW_CMD_OK: cmd was successful
|
|
* @SDW_CMD_IGNORED: cmd was ignored
|
|
* @SDW_CMD_FAIL: cmd was NACKed
|
|
* @SDW_CMD_TIMEOUT: cmd timedout
|
|
* @SDW_CMD_FAIL_OTHER: cmd failed due to other reason than above
|
|
*
|
|
* NOTE: The enum is different than actual Spec as response in the Spec is
|
|
* combination of ACK/NAK bits
|
|
*
|
|
* SDW_CMD_TIMEOUT/FAIL_OTHER is defined for SW use, not in spec
|
|
*/
|
|
enum sdw_command_response {
|
|
SDW_CMD_OK = 0,
|
|
SDW_CMD_IGNORED = 1,
|
|
SDW_CMD_FAIL = 2,
|
|
SDW_CMD_TIMEOUT = 3,
|
|
SDW_CMD_FAIL_OTHER = 4,
|
|
};
|
|
|
|
/* block group count enum */
|
|
enum sdw_dpn_grouping {
|
|
SDW_BLK_GRP_CNT_1 = 0,
|
|
SDW_BLK_GRP_CNT_2 = 1,
|
|
SDW_BLK_GRP_CNT_3 = 2,
|
|
SDW_BLK_GRP_CNT_4 = 3,
|
|
};
|
|
|
|
/* block packing mode enum */
|
|
enum sdw_dpn_pkg_mode {
|
|
SDW_BLK_PKG_PER_PORT = 0,
|
|
SDW_BLK_PKG_PER_CHANNEL = 1
|
|
};
|
|
|
|
/**
|
|
* enum sdw_stream_type: data stream type
|
|
*
|
|
* @SDW_STREAM_PCM: PCM data stream
|
|
* @SDW_STREAM_PDM: PDM data stream
|
|
*
|
|
* spec doesn't define this, but is used in implementation
|
|
*/
|
|
enum sdw_stream_type {
|
|
SDW_STREAM_PCM = 0,
|
|
SDW_STREAM_PDM = 1,
|
|
};
|
|
|
|
/**
|
|
* enum sdw_data_direction: Data direction
|
|
*
|
|
* @SDW_DATA_DIR_RX: Data into Port
|
|
* @SDW_DATA_DIR_TX: Data out of Port
|
|
*/
|
|
enum sdw_data_direction {
|
|
SDW_DATA_DIR_RX = 0,
|
|
SDW_DATA_DIR_TX = 1,
|
|
};
|
|
|
|
/**
|
|
* enum sdw_port_data_mode: Data Port mode
|
|
*
|
|
* @SDW_PORT_DATA_MODE_NORMAL: Normal data mode where audio data is received
|
|
* and transmitted.
|
|
* @SDW_PORT_DATA_MODE_PRBS: Test mode which uses a PRBS generator to produce
|
|
* a pseudo random data pattern that is transferred
|
|
* @SDW_PORT_DATA_MODE_STATIC_0: Simple test mode which uses static value of
|
|
* logic 0. The encoding will result in no signal transitions
|
|
* @SDW_PORT_DATA_MODE_STATIC_1: Simple test mode which uses static value of
|
|
* logic 1. The encoding will result in signal transitions at every bitslot
|
|
* owned by this Port
|
|
*/
|
|
enum sdw_port_data_mode {
|
|
SDW_PORT_DATA_MODE_NORMAL = 0,
|
|
SDW_PORT_DATA_MODE_PRBS = 1,
|
|
SDW_PORT_DATA_MODE_STATIC_0 = 2,
|
|
SDW_PORT_DATA_MODE_STATIC_1 = 3,
|
|
};
|
|
|
|
/*
|
|
* SDW properties, defined in MIPI DisCo spec v1.0
|
|
*/
|
|
enum sdw_clk_stop_reset_behave {
|
|
SDW_CLK_STOP_KEEP_STATUS = 1,
|
|
};
|
|
|
|
/**
|
|
* enum sdw_p15_behave - Slave Port 15 behaviour when the Master attempts a
|
|
* read
|
|
* @SDW_P15_READ_IGNORED: Read is ignored
|
|
* @SDW_P15_CMD_OK: Command is ok
|
|
*/
|
|
enum sdw_p15_behave {
|
|
SDW_P15_READ_IGNORED = 0,
|
|
SDW_P15_CMD_OK = 1,
|
|
};
|
|
|
|
/**
|
|
* enum sdw_dpn_type - Data port types
|
|
* @SDW_DPN_FULL: Full Data Port is supported
|
|
* @SDW_DPN_SIMPLE: Simplified Data Port as defined in spec.
|
|
* DPN_SampleCtrl2, DPN_OffsetCtrl2, DPN_HCtrl and DPN_BlockCtrl3
|
|
* are not implemented.
|
|
* @SDW_DPN_REDUCED: Reduced Data Port as defined in spec.
|
|
* DPN_SampleCtrl2, DPN_HCtrl are not implemented.
|
|
*/
|
|
enum sdw_dpn_type {
|
|
SDW_DPN_FULL = 0,
|
|
SDW_DPN_SIMPLE = 1,
|
|
SDW_DPN_REDUCED = 2,
|
|
};
|
|
|
|
/**
|
|
* enum sdw_clk_stop_mode - Clock Stop modes
|
|
* @SDW_CLK_STOP_MODE0: Slave can continue operation seamlessly on clock
|
|
* restart
|
|
* @SDW_CLK_STOP_MODE1: Slave may have entered a deeper power-saving mode,
|
|
* not capable of continuing operation seamlessly when the clock restarts
|
|
*/
|
|
enum sdw_clk_stop_mode {
|
|
SDW_CLK_STOP_MODE0 = 0,
|
|
SDW_CLK_STOP_MODE1 = 1,
|
|
};
|
|
|
|
/**
|
|
* struct sdw_dp0_prop - DP0 properties
|
|
* @max_word: Maximum number of bits in a Payload Channel Sample, 1 to 64
|
|
* (inclusive)
|
|
* @min_word: Minimum number of bits in a Payload Channel Sample, 1 to 64
|
|
* (inclusive)
|
|
* @num_words: number of wordlengths supported
|
|
* @words: wordlengths supported
|
|
* @BRA_flow_controlled: Slave implementation results in an OK_NotReady
|
|
* response
|
|
* @simple_ch_prep_sm: If channel prepare sequence is required
|
|
* @imp_def_interrupts: If set, each bit corresponds to support for
|
|
* implementation-defined interrupts
|
|
*
|
|
* The wordlengths are specified by Spec as max, min AND number of
|
|
* discrete values, implementation can define based on the wordlengths they
|
|
* support
|
|
*/
|
|
struct sdw_dp0_prop {
|
|
u32 max_word;
|
|
u32 min_word;
|
|
u32 num_words;
|
|
u32 *words;
|
|
bool BRA_flow_controlled;
|
|
bool simple_ch_prep_sm;
|
|
bool imp_def_interrupts;
|
|
};
|
|
|
|
/**
|
|
* struct sdw_dpn_audio_mode - Audio mode properties for DPn
|
|
* @bus_min_freq: Minimum bus frequency, in Hz
|
|
* @bus_max_freq: Maximum bus frequency, in Hz
|
|
* @bus_num_freq: Number of discrete frequencies supported
|
|
* @bus_freq: Discrete bus frequencies, in Hz
|
|
* @min_freq: Minimum sampling frequency, in Hz
|
|
* @max_freq: Maximum sampling bus frequency, in Hz
|
|
* @num_freq: Number of discrete sampling frequency supported
|
|
* @freq: Discrete sampling frequencies, in Hz
|
|
* @prep_ch_behave: Specifies the dependencies between Channel Prepare
|
|
* sequence and bus clock configuration
|
|
* If 0, Channel Prepare can happen at any Bus clock rate
|
|
* If 1, Channel Prepare sequence shall happen only after Bus clock is
|
|
* changed to a frequency supported by this mode or compatible modes
|
|
* described by the next field
|
|
* @glitchless: Bitmap describing possible glitchless transitions from this
|
|
* Audio Mode to other Audio Modes
|
|
*/
|
|
struct sdw_dpn_audio_mode {
|
|
u32 bus_min_freq;
|
|
u32 bus_max_freq;
|
|
u32 bus_num_freq;
|
|
u32 *bus_freq;
|
|
u32 max_freq;
|
|
u32 min_freq;
|
|
u32 num_freq;
|
|
u32 *freq;
|
|
u32 prep_ch_behave;
|
|
u32 glitchless;
|
|
};
|
|
|
|
/**
|
|
* struct sdw_dpn_prop - Data Port DPn properties
|
|
* @num: port number
|
|
* @max_word: Maximum number of bits in a Payload Channel Sample, 1 to 64
|
|
* (inclusive)
|
|
* @min_word: Minimum number of bits in a Payload Channel Sample, 1 to 64
|
|
* (inclusive)
|
|
* @num_words: Number of discrete supported wordlengths
|
|
* @words: Discrete supported wordlength
|
|
* @type: Data port type. Full, Simplified or Reduced
|
|
* @max_grouping: Maximum number of samples that can be grouped together for
|
|
* a full data port
|
|
* @simple_ch_prep_sm: If the port supports simplified channel prepare state
|
|
* machine
|
|
* @ch_prep_timeout: Port-specific timeout value, in milliseconds
|
|
* @imp_def_interrupts: If set, each bit corresponds to support for
|
|
* implementation-defined interrupts
|
|
* @max_ch: Maximum channels supported
|
|
* @min_ch: Minimum channels supported
|
|
* @num_channels: Number of discrete channels supported
|
|
* @channels: Discrete channels supported
|
|
* @num_ch_combinations: Number of channel combinations supported
|
|
* @ch_combinations: Channel combinations supported
|
|
* @modes: SDW mode supported
|
|
* @max_async_buffer: Number of samples that this port can buffer in
|
|
* asynchronous modes
|
|
* @block_pack_mode: Type of block port mode supported
|
|
* @read_only_wordlength: Read Only wordlength field in DPN_BlockCtrl1 register
|
|
* @port_encoding: Payload Channel Sample encoding schemes supported
|
|
* @audio_modes: Audio modes supported
|
|
*/
|
|
struct sdw_dpn_prop {
|
|
u32 num;
|
|
u32 max_word;
|
|
u32 min_word;
|
|
u32 num_words;
|
|
u32 *words;
|
|
enum sdw_dpn_type type;
|
|
u32 max_grouping;
|
|
bool simple_ch_prep_sm;
|
|
u32 ch_prep_timeout;
|
|
u32 imp_def_interrupts;
|
|
u32 max_ch;
|
|
u32 min_ch;
|
|
u32 num_channels;
|
|
u32 *channels;
|
|
u32 num_ch_combinations;
|
|
u32 *ch_combinations;
|
|
u32 modes;
|
|
u32 max_async_buffer;
|
|
bool block_pack_mode;
|
|
bool read_only_wordlength;
|
|
u32 port_encoding;
|
|
struct sdw_dpn_audio_mode *audio_modes;
|
|
};
|
|
|
|
/**
|
|
* struct sdw_slave_prop - SoundWire Slave properties
|
|
* @mipi_revision: Spec version of the implementation
|
|
* @wake_capable: Wake-up events are supported
|
|
* @test_mode_capable: If test mode is supported
|
|
* @clk_stop_mode1: Clock-Stop Mode 1 is supported
|
|
* @simple_clk_stop_capable: Simple clock mode is supported
|
|
* @clk_stop_timeout: Worst-case latency of the Clock Stop Prepare State
|
|
* Machine transitions, in milliseconds
|
|
* @ch_prep_timeout: Worst-case latency of the Channel Prepare State Machine
|
|
* transitions, in milliseconds
|
|
* @reset_behave: Slave keeps the status of the SlaveStopClockPrepare
|
|
* state machine (P=1 SCSP_SM) after exit from clock-stop mode1
|
|
* @high_PHY_capable: Slave is HighPHY capable
|
|
* @paging_support: Slave implements paging registers SCP_AddrPage1 and
|
|
* SCP_AddrPage2
|
|
* @bank_delay_support: Slave implements bank delay/bridge support registers
|
|
* SCP_BankDelay and SCP_NextFrame
|
|
* @p15_behave: Slave behavior when the Master attempts a read to the Port15
|
|
* alias
|
|
* @lane_control_support: Slave supports lane control
|
|
* @master_count: Number of Masters present on this Slave
|
|
* @source_ports: Bitmap identifying source ports
|
|
* @sink_ports: Bitmap identifying sink ports
|
|
* @dp0_prop: Data Port 0 properties
|
|
* @src_dpn_prop: Source Data Port N properties
|
|
* @sink_dpn_prop: Sink Data Port N properties
|
|
* @scp_int1_mask: SCP_INT1_MASK desired settings
|
|
* @quirks: bitmask identifying deltas from the MIPI specification
|
|
* @is_sdca: the Slave supports the SDCA specification
|
|
*/
|
|
struct sdw_slave_prop {
|
|
u32 mipi_revision;
|
|
bool wake_capable;
|
|
bool test_mode_capable;
|
|
bool clk_stop_mode1;
|
|
bool simple_clk_stop_capable;
|
|
u32 clk_stop_timeout;
|
|
u32 ch_prep_timeout;
|
|
enum sdw_clk_stop_reset_behave reset_behave;
|
|
bool high_PHY_capable;
|
|
bool paging_support;
|
|
bool bank_delay_support;
|
|
enum sdw_p15_behave p15_behave;
|
|
bool lane_control_support;
|
|
u32 master_count;
|
|
u32 source_ports;
|
|
u32 sink_ports;
|
|
struct sdw_dp0_prop *dp0_prop;
|
|
struct sdw_dpn_prop *src_dpn_prop;
|
|
struct sdw_dpn_prop *sink_dpn_prop;
|
|
u8 scp_int1_mask;
|
|
u32 quirks;
|
|
bool is_sdca;
|
|
};
|
|
|
|
#define SDW_SLAVE_QUIRKS_INVALID_INITIAL_PARITY BIT(0)
|
|
|
|
/**
|
|
* struct sdw_master_prop - Master properties
|
|
* @revision: MIPI spec version of the implementation
|
|
* @clk_stop_modes: Bitmap, bit N set when clock-stop-modeN supported
|
|
* @max_clk_freq: Maximum Bus clock frequency, in Hz
|
|
* @num_clk_gears: Number of clock gears supported
|
|
* @clk_gears: Clock gears supported
|
|
* @num_clk_freq: Number of clock frequencies supported, in Hz
|
|
* @clk_freq: Clock frequencies supported, in Hz
|
|
* @default_frame_rate: Controller default Frame rate, in Hz
|
|
* @default_row: Number of rows
|
|
* @default_col: Number of columns
|
|
* @dynamic_frame: Dynamic frame shape supported
|
|
* @err_threshold: Number of times that software may retry sending a single
|
|
* command
|
|
* @mclk_freq: clock reference passed to SoundWire Master, in Hz.
|
|
* @hw_disabled: if true, the Master is not functional, typically due to pin-mux
|
|
* @quirks: bitmask identifying optional behavior beyond the scope of the MIPI specification
|
|
*/
|
|
struct sdw_master_prop {
|
|
u32 revision;
|
|
u32 clk_stop_modes;
|
|
u32 max_clk_freq;
|
|
u32 num_clk_gears;
|
|
u32 *clk_gears;
|
|
u32 num_clk_freq;
|
|
u32 *clk_freq;
|
|
u32 default_frame_rate;
|
|
u32 default_row;
|
|
u32 default_col;
|
|
bool dynamic_frame;
|
|
u32 err_threshold;
|
|
u32 mclk_freq;
|
|
bool hw_disabled;
|
|
u64 quirks;
|
|
};
|
|
|
|
/* Definitions for Master quirks */
|
|
|
|
/*
|
|
* In a number of platforms bus clashes are reported after a hardware
|
|
* reset but without any explanations or evidence of a real problem.
|
|
* The following quirk will discard all initial bus clash interrupts
|
|
* but will leave the detection on should real bus clashes happen
|
|
*/
|
|
#define SDW_MASTER_QUIRKS_CLEAR_INITIAL_CLASH BIT(0)
|
|
|
|
/*
|
|
* Some Slave devices have known issues with incorrect parity errors
|
|
* reported after a hardware reset. However during integration unexplained
|
|
* parity errors can be reported by Slave devices, possibly due to electrical
|
|
* issues at the Master level.
|
|
* The following quirk will discard all initial parity errors but will leave
|
|
* the detection on should real parity errors happen.
|
|
*/
|
|
#define SDW_MASTER_QUIRKS_CLEAR_INITIAL_PARITY BIT(1)
|
|
|
|
int sdw_master_read_prop(struct sdw_bus *bus);
|
|
int sdw_slave_read_prop(struct sdw_slave *slave);
|
|
|
|
/*
|
|
* SDW Slave Structures and APIs
|
|
*/
|
|
|
|
#define SDW_IGNORED_UNIQUE_ID 0xFF
|
|
|
|
/**
|
|
* struct sdw_slave_id - Slave ID
|
|
* @mfg_id: MIPI Manufacturer ID
|
|
* @part_id: Device Part ID
|
|
* @class_id: MIPI Class ID (defined starting with SoundWire 1.2 spec)
|
|
* @unique_id: Device unique ID
|
|
* @sdw_version: SDW version implemented
|
|
*
|
|
* The order of the IDs here does not follow the DisCo spec definitions
|
|
*/
|
|
struct sdw_slave_id {
|
|
__u16 mfg_id;
|
|
__u16 part_id;
|
|
__u8 class_id;
|
|
__u8 unique_id;
|
|
__u8 sdw_version:4;
|
|
};
|
|
|
|
/*
|
|
* Helper macros to extract the MIPI-defined IDs
|
|
*
|
|
* Spec definition
|
|
* Register Bit Contents
|
|
* DevId_0 [7:4] 47:44 sdw_version
|
|
* DevId_0 [3:0] 43:40 unique_id
|
|
* DevId_1 39:32 mfg_id [15:8]
|
|
* DevId_2 31:24 mfg_id [7:0]
|
|
* DevId_3 23:16 part_id [15:8]
|
|
* DevId_4 15:08 part_id [7:0]
|
|
* DevId_5 07:00 class_id
|
|
*
|
|
* The MIPI DisCo for SoundWire defines in addition the link_id as bits 51:48
|
|
*/
|
|
#define SDW_DISCO_LINK_ID_MASK GENMASK_ULL(51, 48)
|
|
#define SDW_VERSION_MASK GENMASK_ULL(47, 44)
|
|
#define SDW_UNIQUE_ID_MASK GENMASK_ULL(43, 40)
|
|
#define SDW_MFG_ID_MASK GENMASK_ULL(39, 24)
|
|
#define SDW_PART_ID_MASK GENMASK_ULL(23, 8)
|
|
#define SDW_CLASS_ID_MASK GENMASK_ULL(7, 0)
|
|
|
|
#define SDW_DISCO_LINK_ID(addr) FIELD_GET(SDW_DISCO_LINK_ID_MASK, addr)
|
|
#define SDW_VERSION(addr) FIELD_GET(SDW_VERSION_MASK, addr)
|
|
#define SDW_UNIQUE_ID(addr) FIELD_GET(SDW_UNIQUE_ID_MASK, addr)
|
|
#define SDW_MFG_ID(addr) FIELD_GET(SDW_MFG_ID_MASK, addr)
|
|
#define SDW_PART_ID(addr) FIELD_GET(SDW_PART_ID_MASK, addr)
|
|
#define SDW_CLASS_ID(addr) FIELD_GET(SDW_CLASS_ID_MASK, addr)
|
|
|
|
/**
|
|
* struct sdw_slave_intr_status - Slave interrupt status
|
|
* @sdca_cascade: set if the Slave device reports an SDCA interrupt
|
|
* @control_port: control port status
|
|
* @port: data port status
|
|
*/
|
|
struct sdw_slave_intr_status {
|
|
bool sdca_cascade;
|
|
u8 control_port;
|
|
u8 port[15];
|
|
};
|
|
|
|
/**
|
|
* sdw_reg_bank - SoundWire register banks
|
|
* @SDW_BANK0: Soundwire register bank 0
|
|
* @SDW_BANK1: Soundwire register bank 1
|
|
*/
|
|
enum sdw_reg_bank {
|
|
SDW_BANK0,
|
|
SDW_BANK1,
|
|
};
|
|
|
|
/**
|
|
* struct sdw_bus_conf: Bus configuration
|
|
*
|
|
* @clk_freq: Clock frequency, in Hz
|
|
* @num_rows: Number of rows in frame
|
|
* @num_cols: Number of columns in frame
|
|
* @bank: Next register bank
|
|
*/
|
|
struct sdw_bus_conf {
|
|
unsigned int clk_freq;
|
|
unsigned int num_rows;
|
|
unsigned int num_cols;
|
|
unsigned int bank;
|
|
};
|
|
|
|
/**
|
|
* struct sdw_prepare_ch: Prepare/De-prepare Data Port channel
|
|
*
|
|
* @num: Port number
|
|
* @ch_mask: Active channel mask
|
|
* @prepare: Prepare (true) /de-prepare (false) channel
|
|
* @bank: Register bank, which bank Slave/Master driver should program for
|
|
* implementation defined registers. This is always updated to next_bank
|
|
* value read from bus params.
|
|
*
|
|
*/
|
|
struct sdw_prepare_ch {
|
|
unsigned int num;
|
|
unsigned int ch_mask;
|
|
bool prepare;
|
|
unsigned int bank;
|
|
};
|
|
|
|
/**
|
|
* enum sdw_port_prep_ops: Prepare operations for Data Port
|
|
*
|
|
* @SDW_OPS_PORT_PRE_PREP: Pre prepare operation for the Port
|
|
* @SDW_OPS_PORT_PREP: Prepare operation for the Port
|
|
* @SDW_OPS_PORT_POST_PREP: Post prepare operation for the Port
|
|
*/
|
|
enum sdw_port_prep_ops {
|
|
SDW_OPS_PORT_PRE_PREP = 0,
|
|
SDW_OPS_PORT_PREP = 1,
|
|
SDW_OPS_PORT_POST_PREP = 2,
|
|
};
|
|
|
|
/**
|
|
* struct sdw_bus_params: Structure holding bus configuration
|
|
*
|
|
* @curr_bank: Current bank in use (BANK0/BANK1)
|
|
* @next_bank: Next bank to use (BANK0/BANK1). next_bank will always be
|
|
* set to !curr_bank
|
|
* @max_dr_freq: Maximum double rate clock frequency supported, in Hz
|
|
* @curr_dr_freq: Current double rate clock frequency, in Hz
|
|
* @bandwidth: Current bandwidth
|
|
* @col: Active columns
|
|
* @row: Active rows
|
|
* @s_data_mode: NORMAL, STATIC or PRBS mode for all Slave ports
|
|
* @m_data_mode: NORMAL, STATIC or PRBS mode for all Master ports. The value
|
|
* should be the same to detect transmission issues, but can be different to
|
|
* test the interrupt reports
|
|
*/
|
|
struct sdw_bus_params {
|
|
enum sdw_reg_bank curr_bank;
|
|
enum sdw_reg_bank next_bank;
|
|
unsigned int max_dr_freq;
|
|
unsigned int curr_dr_freq;
|
|
unsigned int bandwidth;
|
|
unsigned int col;
|
|
unsigned int row;
|
|
int s_data_mode;
|
|
int m_data_mode;
|
|
};
|
|
|
|
/**
|
|
* struct sdw_slave_ops: Slave driver callback ops
|
|
*
|
|
* @read_prop: Read Slave properties
|
|
* @interrupt_callback: Device interrupt notification (invoked in thread
|
|
* context)
|
|
* @update_status: Update Slave status
|
|
* @bus_config: Update the bus config for Slave
|
|
* @port_prep: Prepare the port with parameters
|
|
* @clk_stop: handle imp-def sequences before and after prepare and de-prepare
|
|
*/
|
|
struct sdw_slave_ops {
|
|
int (*read_prop)(struct sdw_slave *sdw);
|
|
int (*interrupt_callback)(struct sdw_slave *slave,
|
|
struct sdw_slave_intr_status *status);
|
|
int (*update_status)(struct sdw_slave *slave,
|
|
enum sdw_slave_status status);
|
|
int (*bus_config)(struct sdw_slave *slave,
|
|
struct sdw_bus_params *params);
|
|
int (*port_prep)(struct sdw_slave *slave,
|
|
struct sdw_prepare_ch *prepare_ch,
|
|
enum sdw_port_prep_ops pre_ops);
|
|
int (*clk_stop)(struct sdw_slave *slave,
|
|
enum sdw_clk_stop_mode mode,
|
|
enum sdw_clk_stop_type type);
|
|
|
|
};
|
|
|
|
/**
|
|
* struct sdw_slave - SoundWire Slave
|
|
* @id: MIPI device ID
|
|
* @dev: Linux device
|
|
* @status: Status reported by the Slave
|
|
* @bus: Bus handle
|
|
* @ops: Slave callback ops
|
|
* @prop: Slave properties
|
|
* @debugfs: Slave debugfs
|
|
* @node: node for bus list
|
|
* @port_ready: Port ready completion flag for each Slave port
|
|
* @m_port_map: static Master port map for each Slave port
|
|
* @dev_num: Current Device Number, values can be 0 or dev_num_sticky
|
|
* @dev_num_sticky: one-time static Device Number assigned by Bus
|
|
* @probed: boolean tracking driver state
|
|
* @probe_complete: completion utility to control potential races
|
|
* on startup between driver probe/initialization and SoundWire
|
|
* Slave state changes/implementation-defined interrupts
|
|
* @enumeration_complete: completion utility to control potential races
|
|
* on startup between device enumeration and read/write access to the
|
|
* Slave device
|
|
* @initialization_complete: completion utility to control potential races
|
|
* on startup between device enumeration and settings being restored
|
|
* @unattach_request: mask field to keep track why the Slave re-attached and
|
|
* was re-initialized. This is useful to deal with potential race conditions
|
|
* between the Master suspending and the codec resuming, and make sure that
|
|
* when the Master triggered a reset the Slave is properly enumerated and
|
|
* initialized
|
|
* @first_interrupt_done: status flag tracking if the interrupt handling
|
|
* for a Slave happens for the first time after enumeration
|
|
*/
|
|
struct sdw_slave {
|
|
struct sdw_slave_id id;
|
|
struct device dev;
|
|
enum sdw_slave_status status;
|
|
struct sdw_bus *bus;
|
|
const struct sdw_slave_ops *ops;
|
|
struct sdw_slave_prop prop;
|
|
#ifdef CONFIG_DEBUG_FS
|
|
struct dentry *debugfs;
|
|
#endif
|
|
struct list_head node;
|
|
struct completion port_ready[SDW_MAX_PORTS];
|
|
unsigned int m_port_map[SDW_MAX_PORTS];
|
|
u16 dev_num;
|
|
u16 dev_num_sticky;
|
|
bool probed;
|
|
struct completion probe_complete;
|
|
struct completion enumeration_complete;
|
|
struct completion initialization_complete;
|
|
u32 unattach_request;
|
|
bool first_interrupt_done;
|
|
};
|
|
|
|
#define dev_to_sdw_dev(_dev) container_of(_dev, struct sdw_slave, dev)
|
|
|
|
/**
|
|
* struct sdw_master_device - SoundWire 'Master Device' representation
|
|
* @dev: Linux device for this Master
|
|
* @bus: Bus handle shortcut
|
|
*/
|
|
struct sdw_master_device {
|
|
struct device dev;
|
|
struct sdw_bus *bus;
|
|
};
|
|
|
|
#define dev_to_sdw_master_device(d) \
|
|
container_of(d, struct sdw_master_device, dev)
|
|
|
|
struct sdw_driver {
|
|
const char *name;
|
|
|
|
int (*probe)(struct sdw_slave *sdw,
|
|
const struct sdw_device_id *id);
|
|
int (*remove)(struct sdw_slave *sdw);
|
|
void (*shutdown)(struct sdw_slave *sdw);
|
|
|
|
const struct sdw_device_id *id_table;
|
|
const struct sdw_slave_ops *ops;
|
|
|
|
struct device_driver driver;
|
|
};
|
|
|
|
#define SDW_SLAVE_ENTRY_EXT(_mfg_id, _part_id, _version, _c_id, _drv_data) \
|
|
{ .mfg_id = (_mfg_id), .part_id = (_part_id), \
|
|
.sdw_version = (_version), .class_id = (_c_id), \
|
|
.driver_data = (unsigned long)(_drv_data) }
|
|
|
|
#define SDW_SLAVE_ENTRY(_mfg_id, _part_id, _drv_data) \
|
|
SDW_SLAVE_ENTRY_EXT((_mfg_id), (_part_id), 0, 0, (_drv_data))
|
|
|
|
int sdw_handle_slave_status(struct sdw_bus *bus,
|
|
enum sdw_slave_status status[]);
|
|
|
|
/*
|
|
* SDW master structures and APIs
|
|
*/
|
|
|
|
/**
|
|
* struct sdw_port_params: Data Port parameters
|
|
*
|
|
* @num: Port number
|
|
* @bps: Word length of the Port
|
|
* @flow_mode: Port Data flow mode
|
|
* @data_mode: Test modes or normal mode
|
|
*
|
|
* This is used to program the Data Port based on Data Port stream
|
|
* parameters.
|
|
*/
|
|
struct sdw_port_params {
|
|
unsigned int num;
|
|
unsigned int bps;
|
|
unsigned int flow_mode;
|
|
unsigned int data_mode;
|
|
};
|
|
|
|
/**
|
|
* struct sdw_transport_params: Data Port Transport Parameters
|
|
*
|
|
* @blk_grp_ctrl_valid: Port implements block group control
|
|
* @num: Port number
|
|
* @blk_grp_ctrl: Block group control value
|
|
* @sample_interval: Sample interval
|
|
* @offset1: Blockoffset of the payload data
|
|
* @offset2: Blockoffset of the payload data
|
|
* @hstart: Horizontal start of the payload data
|
|
* @hstop: Horizontal stop of the payload data
|
|
* @blk_pkg_mode: Block per channel or block per port
|
|
* @lane_ctrl: Data lane Port uses for Data transfer. Currently only single
|
|
* data lane is supported in bus
|
|
*
|
|
* This is used to program the Data Port based on Data Port transport
|
|
* parameters. All these parameters are banked and can be modified
|
|
* during a bank switch without any artifacts in audio stream.
|
|
*/
|
|
struct sdw_transport_params {
|
|
bool blk_grp_ctrl_valid;
|
|
unsigned int port_num;
|
|
unsigned int blk_grp_ctrl;
|
|
unsigned int sample_interval;
|
|
unsigned int offset1;
|
|
unsigned int offset2;
|
|
unsigned int hstart;
|
|
unsigned int hstop;
|
|
unsigned int blk_pkg_mode;
|
|
unsigned int lane_ctrl;
|
|
};
|
|
|
|
/**
|
|
* struct sdw_enable_ch: Enable/disable Data Port channel
|
|
*
|
|
* @num: Port number
|
|
* @ch_mask: Active channel mask
|
|
* @enable: Enable (true) /disable (false) channel
|
|
*/
|
|
struct sdw_enable_ch {
|
|
unsigned int port_num;
|
|
unsigned int ch_mask;
|
|
bool enable;
|
|
};
|
|
|
|
/**
|
|
* struct sdw_master_port_ops: Callback functions from bus to Master
|
|
* driver to set Master Data ports.
|
|
*
|
|
* @dpn_set_port_params: Set the Port parameters for the Master Port.
|
|
* Mandatory callback
|
|
* @dpn_set_port_transport_params: Set transport parameters for the Master
|
|
* Port. Mandatory callback
|
|
* @dpn_port_prep: Port prepare operations for the Master Data Port.
|
|
* @dpn_port_enable_ch: Enable the channels of Master Port.
|
|
*/
|
|
struct sdw_master_port_ops {
|
|
int (*dpn_set_port_params)(struct sdw_bus *bus,
|
|
struct sdw_port_params *port_params,
|
|
unsigned int bank);
|
|
int (*dpn_set_port_transport_params)(struct sdw_bus *bus,
|
|
struct sdw_transport_params *transport_params,
|
|
enum sdw_reg_bank bank);
|
|
int (*dpn_port_prep)(struct sdw_bus *bus,
|
|
struct sdw_prepare_ch *prepare_ch);
|
|
int (*dpn_port_enable_ch)(struct sdw_bus *bus,
|
|
struct sdw_enable_ch *enable_ch, unsigned int bank);
|
|
};
|
|
|
|
struct sdw_msg;
|
|
|
|
/**
|
|
* struct sdw_defer - SDW deffered message
|
|
* @length: message length
|
|
* @complete: message completion
|
|
* @msg: SDW message
|
|
*/
|
|
struct sdw_defer {
|
|
int length;
|
|
struct completion complete;
|
|
struct sdw_msg *msg;
|
|
};
|
|
|
|
/**
|
|
* struct sdw_master_ops - Master driver ops
|
|
* @read_prop: Read Master properties
|
|
* @override_adr: Override value read from firmware (quirk for buggy firmware)
|
|
* @xfer_msg: Transfer message callback
|
|
* @xfer_msg_defer: Defer version of transfer message callback
|
|
* @reset_page_addr: Reset the SCP page address registers
|
|
* @set_bus_conf: Set the bus configuration
|
|
* @pre_bank_switch: Callback for pre bank switch
|
|
* @post_bank_switch: Callback for post bank switch
|
|
*/
|
|
struct sdw_master_ops {
|
|
int (*read_prop)(struct sdw_bus *bus);
|
|
u64 (*override_adr)
|
|
(struct sdw_bus *bus, u64 addr);
|
|
enum sdw_command_response (*xfer_msg)
|
|
(struct sdw_bus *bus, struct sdw_msg *msg);
|
|
enum sdw_command_response (*xfer_msg_defer)
|
|
(struct sdw_bus *bus, struct sdw_msg *msg,
|
|
struct sdw_defer *defer);
|
|
enum sdw_command_response (*reset_page_addr)
|
|
(struct sdw_bus *bus, unsigned int dev_num);
|
|
int (*set_bus_conf)(struct sdw_bus *bus,
|
|
struct sdw_bus_params *params);
|
|
int (*pre_bank_switch)(struct sdw_bus *bus);
|
|
int (*post_bank_switch)(struct sdw_bus *bus);
|
|
|
|
};
|
|
|
|
/**
|
|
* struct sdw_bus - SoundWire bus
|
|
* @dev: Shortcut to &bus->md->dev to avoid changing the entire code.
|
|
* @md: Master device
|
|
* @link_id: Link id number, can be 0 to N, unique for each Master
|
|
* @id: bus system-wide unique id
|
|
* @slaves: list of Slaves on this bus
|
|
* @assigned: Bitmap for Slave device numbers.
|
|
* Bit set implies used number, bit clear implies unused number.
|
|
* @bus_lock: bus lock
|
|
* @msg_lock: message lock
|
|
* @compute_params: points to Bus resource management implementation
|
|
* @ops: Master callback ops
|
|
* @port_ops: Master port callback ops
|
|
* @params: Current bus parameters
|
|
* @prop: Master properties
|
|
* @m_rt_list: List of Master instance of all stream(s) running on Bus. This
|
|
* is used to compute and program bus bandwidth, clock, frame shape,
|
|
* transport and port parameters
|
|
* @debugfs: Bus debugfs
|
|
* @defer_msg: Defer message
|
|
* @clk_stop_timeout: Clock stop timeout computed
|
|
* @bank_switch_timeout: Bank switch timeout computed
|
|
* @multi_link: Store bus property that indicates if multi links
|
|
* are supported. This flag is populated by drivers after reading
|
|
* appropriate firmware (ACPI/DT).
|
|
* @hw_sync_min_links: Number of links used by a stream above which
|
|
* hardware-based synchronization is required. This value is only
|
|
* meaningful if multi_link is set. If set to 1, hardware-based
|
|
* synchronization will be used even if a stream only uses a single
|
|
* SoundWire segment.
|
|
*/
|
|
struct sdw_bus {
|
|
struct device *dev;
|
|
struct sdw_master_device *md;
|
|
unsigned int link_id;
|
|
int id;
|
|
struct list_head slaves;
|
|
DECLARE_BITMAP(assigned, SDW_MAX_DEVICES);
|
|
struct mutex bus_lock;
|
|
struct mutex msg_lock;
|
|
int (*compute_params)(struct sdw_bus *bus);
|
|
const struct sdw_master_ops *ops;
|
|
const struct sdw_master_port_ops *port_ops;
|
|
struct sdw_bus_params params;
|
|
struct sdw_master_prop prop;
|
|
struct list_head m_rt_list;
|
|
#ifdef CONFIG_DEBUG_FS
|
|
struct dentry *debugfs;
|
|
#endif
|
|
struct sdw_defer defer_msg;
|
|
unsigned int clk_stop_timeout;
|
|
u32 bank_switch_timeout;
|
|
bool multi_link;
|
|
int hw_sync_min_links;
|
|
};
|
|
|
|
int sdw_bus_master_add(struct sdw_bus *bus, struct device *parent,
|
|
struct fwnode_handle *fwnode);
|
|
void sdw_bus_master_delete(struct sdw_bus *bus);
|
|
|
|
/**
|
|
* sdw_port_config: Master or Slave Port configuration
|
|
*
|
|
* @num: Port number
|
|
* @ch_mask: channels mask for port
|
|
*/
|
|
struct sdw_port_config {
|
|
unsigned int num;
|
|
unsigned int ch_mask;
|
|
};
|
|
|
|
/**
|
|
* sdw_stream_config: Master or Slave stream configuration
|
|
*
|
|
* @frame_rate: Audio frame rate of the stream, in Hz
|
|
* @ch_count: Channel count of the stream
|
|
* @bps: Number of bits per audio sample
|
|
* @direction: Data direction
|
|
* @type: Stream type PCM or PDM
|
|
*/
|
|
struct sdw_stream_config {
|
|
unsigned int frame_rate;
|
|
unsigned int ch_count;
|
|
unsigned int bps;
|
|
enum sdw_data_direction direction;
|
|
enum sdw_stream_type type;
|
|
};
|
|
|
|
/**
|
|
* sdw_stream_state: Stream states
|
|
*
|
|
* @SDW_STREAM_ALLOCATED: New stream allocated.
|
|
* @SDW_STREAM_CONFIGURED: Stream configured
|
|
* @SDW_STREAM_PREPARED: Stream prepared
|
|
* @SDW_STREAM_ENABLED: Stream enabled
|
|
* @SDW_STREAM_DISABLED: Stream disabled
|
|
* @SDW_STREAM_DEPREPARED: Stream de-prepared
|
|
* @SDW_STREAM_RELEASED: Stream released
|
|
*/
|
|
enum sdw_stream_state {
|
|
SDW_STREAM_ALLOCATED = 0,
|
|
SDW_STREAM_CONFIGURED = 1,
|
|
SDW_STREAM_PREPARED = 2,
|
|
SDW_STREAM_ENABLED = 3,
|
|
SDW_STREAM_DISABLED = 4,
|
|
SDW_STREAM_DEPREPARED = 5,
|
|
SDW_STREAM_RELEASED = 6,
|
|
};
|
|
|
|
/**
|
|
* sdw_stream_params: Stream parameters
|
|
*
|
|
* @rate: Sampling frequency, in Hz
|
|
* @ch_count: Number of channels
|
|
* @bps: bits per channel sample
|
|
*/
|
|
struct sdw_stream_params {
|
|
unsigned int rate;
|
|
unsigned int ch_count;
|
|
unsigned int bps;
|
|
};
|
|
|
|
/**
|
|
* sdw_stream_runtime: Runtime stream parameters
|
|
*
|
|
* @name: SoundWire stream name
|
|
* @params: Stream parameters
|
|
* @state: Current state of the stream
|
|
* @type: Stream type PCM or PDM
|
|
* @master_list: List of Master runtime(s) in this stream.
|
|
* master_list can contain only one m_rt per Master instance
|
|
* for a stream
|
|
* @m_rt_count: Count of Master runtime(s) in this stream
|
|
*/
|
|
struct sdw_stream_runtime {
|
|
const char *name;
|
|
struct sdw_stream_params params;
|
|
enum sdw_stream_state state;
|
|
enum sdw_stream_type type;
|
|
struct list_head master_list;
|
|
int m_rt_count;
|
|
};
|
|
|
|
struct sdw_stream_runtime *sdw_alloc_stream(const char *stream_name);
|
|
void sdw_release_stream(struct sdw_stream_runtime *stream);
|
|
|
|
int sdw_compute_params(struct sdw_bus *bus);
|
|
|
|
int sdw_stream_add_master(struct sdw_bus *bus,
|
|
struct sdw_stream_config *stream_config,
|
|
struct sdw_port_config *port_config,
|
|
unsigned int num_ports,
|
|
struct sdw_stream_runtime *stream);
|
|
int sdw_stream_add_slave(struct sdw_slave *slave,
|
|
struct sdw_stream_config *stream_config,
|
|
struct sdw_port_config *port_config,
|
|
unsigned int num_ports,
|
|
struct sdw_stream_runtime *stream);
|
|
int sdw_stream_remove_master(struct sdw_bus *bus,
|
|
struct sdw_stream_runtime *stream);
|
|
int sdw_stream_remove_slave(struct sdw_slave *slave,
|
|
struct sdw_stream_runtime *stream);
|
|
int sdw_startup_stream(void *sdw_substream);
|
|
int sdw_prepare_stream(struct sdw_stream_runtime *stream);
|
|
int sdw_enable_stream(struct sdw_stream_runtime *stream);
|
|
int sdw_disable_stream(struct sdw_stream_runtime *stream);
|
|
int sdw_deprepare_stream(struct sdw_stream_runtime *stream);
|
|
void sdw_shutdown_stream(void *sdw_substream);
|
|
int sdw_bus_prep_clk_stop(struct sdw_bus *bus);
|
|
int sdw_bus_clk_stop(struct sdw_bus *bus);
|
|
int sdw_bus_exit_clk_stop(struct sdw_bus *bus);
|
|
|
|
/* messaging and data APIs */
|
|
|
|
int sdw_read(struct sdw_slave *slave, u32 addr);
|
|
int sdw_write(struct sdw_slave *slave, u32 addr, u8 value);
|
|
int sdw_write_no_pm(struct sdw_slave *slave, u32 addr, u8 value);
|
|
int sdw_read_no_pm(struct sdw_slave *slave, u32 addr);
|
|
int sdw_nread(struct sdw_slave *slave, u32 addr, size_t count, u8 *val);
|
|
int sdw_nwrite(struct sdw_slave *slave, u32 addr, size_t count, const u8 *val);
|
|
int sdw_update(struct sdw_slave *slave, u32 addr, u8 mask, u8 val);
|
|
int sdw_update_no_pm(struct sdw_slave *slave, u32 addr, u8 mask, u8 val);
|
|
|
|
int sdw_compare_devid(struct sdw_slave *slave, struct sdw_slave_id id);
|
|
void sdw_extract_slave_id(struct sdw_bus *bus, u64 addr, struct sdw_slave_id *id);
|
|
|
|
#endif /* __SOUNDWIRE_H */
|