/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
/* Copyright(c) 2015-17 Intel Corporation. */
#ifndef __SDW_INTEL_H
#define __SDW_INTEL_H
#include <linux/acpi.h>
#include <linux/irqreturn.h>
#include <linux/soundwire/sdw.h>
/*********************************************************************
* cAVS and ACE1 . x definitions
*********************************************************************/
#define SDW_SHIM_BASE 0 x2C000
#define SDW_ALH_BASE 0 x2C800
#define SDW_SHIM_BASE_ACE 0 x38000
#define SDW_ALH_BASE_ACE 0 x24000
#define SDW_LINK_BASE 0 x30000
#define SDW_LINK_SIZE 0 x10000
/* Intel SHIM Registers Definition */
/* LCAP */
#define SDW_SHIM_LCAP 0 x0
#define SDW_SHIM_LCAP_LCOUNT_MASK GENMASK(2 , 0 )
#define SDW_SHIM_LCAP_MLCS_MASK BIT(8 )
/* LCTL */
#define SDW_SHIM_LCTL 0 x4
#define SDW_SHIM_LCTL_SPA BIT(0 )
#define SDW_SHIM_LCTL_SPA_MASK GENMASK(3 , 0 )
#define SDW_SHIM_LCTL_CPA BIT(8 )
#define SDW_SHIM_LCTL_CPA_MASK GENMASK(11 , 8 )
#define SDW_SHIM_LCTL_MLCS_MASK GENMASK(29 , 27 )
#define SDW_SHIM_MLCS_XTAL_CLK 0 x0
#define SDW_SHIM_MLCS_CARDINAL_CLK 0 x1
#define SDW_SHIM_MLCS_AUDIO_PLL_CLK 0 x2
/* SYNC */
#define SDW_SHIM_SYNC 0 xC
#define SDW_SHIM_SYNC_SYNCPRD_VAL_24 (24000 / SDW_CADENCE_GSYNC_KHZ - 1 )
#define SDW_SHIM_SYNC_SYNCPRD_VAL_24_576 (24576 / SDW_CADENCE_GSYNC_KHZ - 1 )
#define SDW_SHIM_SYNC_SYNCPRD_VAL_38_4 (38400 / SDW_CADENCE_GSYNC_KHZ - 1 )
#define SDW_SHIM_SYNC_SYNCPRD_VAL_96 (96000 / SDW_CADENCE_GSYNC_KHZ - 1 )
#define SDW_SHIM_SYNC_SYNCPRD GENMASK(14 , 0 )
#define SDW_SHIM_SYNC_SYNCCPU BIT(15 )
#define SDW_SHIM_SYNC_CMDSYNC_MASK GENMASK(19 , 16 )
#define SDW_SHIM_SYNC_CMDSYNC BIT(16 )
#define SDW_SHIM_SYNC_SYNCGO BIT(24 )
/* Control stream capabililities and channel mask */
#define SDW_SHIM_CTLSCAP(x) (0 x010 + 0 x60 * (x))
#define SDW_SHIM_CTLS0CM(x) (0 x012 + 0 x60 * (x))
#define SDW_SHIM_CTLS1CM(x) (0 x014 + 0 x60 * (x))
#define SDW_SHIM_CTLS2CM(x) (0 x016 + 0 x60 * (x))
#define SDW_SHIM_CTLS3CM(x) (0 x018 + 0 x60 * (x))
/* PCM Stream capabilities */
#define SDW_SHIM_PCMSCAP(x) (0 x020 + 0 x60 * (x))
#define SDW_SHIM_PCMSCAP_ISS GENMASK(3 , 0 )
#define SDW_SHIM_PCMSCAP_OSS GENMASK(7 , 4 )
#define SDW_SHIM_PCMSCAP_BSS GENMASK(12 , 8 )
/* PCM Stream Channel Map */
#define SDW_SHIM_PCMSYCHM(x, y) (0 x022 + (0 x60 * (x)) + (0 x2 * (y)))
/* PCM Stream Channel Count */
#define SDW_SHIM_PCMSYCHC(x, y) (0 x042 + (0 x60 * (x)) + (0 x2 * (y)))
#define SDW_SHIM_PCMSYCM_LCHN GENMASK(3 , 0 )
#define SDW_SHIM_PCMSYCM_HCHN GENMASK(7 , 4 )
#define SDW_SHIM_PCMSYCM_STREAM GENMASK(13 , 8 )
#define SDW_SHIM_PCMSYCM_DIR BIT(15 )
/* IO control */
#define SDW_SHIM_IOCTL(x) (0 x06C + 0 x60 * (x))
#define SDW_SHIM_IOCTL_MIF BIT(0 )
#define SDW_SHIM_IOCTL_CO BIT(1 )
#define SDW_SHIM_IOCTL_COE BIT(2 )
#define SDW_SHIM_IOCTL_DO BIT(3 )
#define SDW_SHIM_IOCTL_DOE BIT(4 )
#define SDW_SHIM_IOCTL_BKE BIT(5 )
#define SDW_SHIM_IOCTL_WPDD BIT(6 )
#define SDW_SHIM_IOCTL_CIBD BIT(8 )
#define SDW_SHIM_IOCTL_DIBD BIT(9 )
/* Wake Enable*/
#define SDW_SHIM_WAKEEN 0 x190
#define SDW_SHIM_WAKEEN_ENABLE BIT(0 )
/* Wake Status */
#define SDW_SHIM_WAKESTS 0 x192
#define SDW_SHIM_WAKESTS_STATUS BIT(0 )
/* AC Timing control */
#define SDW_SHIM_CTMCTL(x) (0 x06E + 0 x60 * (x))
#define SDW_SHIM_CTMCTL_DACTQE BIT(0 )
#define SDW_SHIM_CTMCTL_DODS BIT(1 )
#define SDW_SHIM_CTMCTL_DOAIS GENMASK(4 , 3 )
/* Intel ALH Register definitions */
#define SDW_ALH_STRMZCFG(x) (0 x000 + (0 x4 * (x)))
#define SDW_ALH_NUM_STREAMS 64
#define SDW_ALH_STRMZCFG_DMAT_VAL 0 x3
#define SDW_ALH_STRMZCFG_DMAT GENMASK(7 , 0 )
#define SDW_ALH_STRMZCFG_CHN GENMASK(19 , 16 )
/*********************************************************************
* ACE2 . x definitions for SHIM registers - only accessible when the
* HDAudio extended link LCTL . SPA / CPA = 1 .
*********************************************************************/
/* x variable is link index */
#define SDW_SHIM2_GENERIC_BASE(x) (0 x00030000 + 0 x8000 * (x))
#define SDW_IP_BASE(x) (0 x00030100 + 0 x8000 * (x))
#define SDW_SHIM2_VS_BASE(x) (0 x00036000 + 0 x8000 * (x))
/* SHIM2 Generic Registers */
/* Read-only capabilities */
#define SDW_SHIM2_LECAP 0 x00
#define SDW_SHIM2_LECAP_HDS BIT(0 ) /* unset -> Host mode */
#define SDW_SHIM2_LECAP_MLC GENMASK(3 , 1 ) /* Number of Lanes */
/* PCM Stream capabilities */
#define SDW_SHIM2_PCMSCAP 0 x10
#define SDW_SHIM2_PCMSCAP_ISS GENMASK(3 , 0 ) /* Input-only streams */
#define SDW_SHIM2_PCMSCAP_OSS GENMASK(7 , 4 ) /* Output-only streams */
#define SDW_SHIM2_PCMSCAP_BSS GENMASK(12 , 8 ) /* Bidirectional streams */
/* Read-only PCM Stream Channel Count, y variable is stream */
#define SDW_SHIM2_PCMSYCHC(y) (0 x14 + (0 x4 * (y)))
#define SDW_SHIM2_PCMSYCHC_CS GENMASK(3 , 0 ) /* Channels Supported */
/* PCM Stream Channel Map */
#define SDW_SHIM2_PCMSYCHM(y) (0 x16 + (0 x4 * (y)))
#define SDW_SHIM2_PCMSYCHM_LCHAN GENMASK(3 , 0 ) /* Lowest channel used by the FIFO port */
#define SDW_SHIM2_PCMSYCHM_HCHAN GENMASK(7 , 4 ) /* Lowest channel used by the FIFO port */
#define SDW_SHIM2_PCMSYCHM_STRM GENMASK(13 , 8 ) /* HDaudio stream tag */
#define SDW_SHIM2_PCMSYCHM_DIR BIT(15 ) /* HDaudio stream direction */
/* SHIM2 vendor-specific registers */
#define SDW_SHIM2_INTEL_VS_LVSCTL 0 x04
#define SDW_SHIM2_INTEL_VS_LVSCTL_FCG BIT(26 )
#define SDW_SHIM2_INTEL_VS_LVSCTL_MLCS GENMASK(29 , 27 )
#define SDW_SHIM2_INTEL_VS_LVSCTL_DCGD BIT(30 )
#define SDW_SHIM2_INTEL_VS_LVSCTL_ICGD BIT(31 )
#define SDW_SHIM2_MLCS_XTAL_CLK 0 x0
#define SDW_SHIM2_MLCS_CARDINAL_CLK 0 x1
#define SDW_SHIM2_MLCS_AUDIO_PLL_CLK 0 x2
#define SDW_SHIM2_MLCS_MCLK_INPUT_CLK 0 x3
#define SDW_SHIM2_MLCS_WOV_RING_OSC_CLK 0 x4
#define SDW_SHIM2_INTEL_VS_WAKEEN 0 x08
#define SDW_SHIM2_INTEL_VS_WAKEEN_PWE BIT(0 )
#define SDW_SHIM2_INTEL_VS_WAKESTS 0 x0A
#define SDW_SHIM2_INTEL_VS_WAKEEN_PWS BIT(0 )
#define SDW_SHIM2_INTEL_VS_IOCTL 0 x0C
#define SDW_SHIM2_INTEL_VS_IOCTL_MIF BIT(0 )
#define SDW_SHIM2_INTEL_VS_IOCTL_CO BIT(1 )
#define SDW_SHIM2_INTEL_VS_IOCTL_COE BIT(2 )
#define SDW_SHIM2_INTEL_VS_IOCTL_DO BIT(3 )
#define SDW_SHIM2_INTEL_VS_IOCTL_DOE BIT(4 )
#define SDW_SHIM2_INTEL_VS_IOCTL_BKE BIT(5 )
#define SDW_SHIM2_INTEL_VS_IOCTL_WPDD BIT(6 )
#define SDW_SHIM2_INTEL_VS_IOCTL_ODC BIT(7 )
#define SDW_SHIM2_INTEL_VS_IOCTL_CIBD BIT(8 )
#define SDW_SHIM2_INTEL_VS_IOCTL_DIBD BIT(9 )
#define SDW_SHIM2_INTEL_VS_IOCTL_HAMIFD BIT(10 )
#define SDW_SHIM2_INTEL_VS_ACTMCTL 0 x0E
#define SDW_SHIM2_INTEL_VS_ACTMCTL_DACTQE BIT(0 )
#define SDW_SHIM2_INTEL_VS_ACTMCTL_DODS BIT(1 )
#define SDW_SHIM2_INTEL_VS_ACTMCTL_DODSE BIT(2 )
#define SDW_SHIM2_INTEL_VS_ACTMCTL_DOAIS GENMASK(4 , 3 )
#define SDW_SHIM2_INTEL_VS_ACTMCTL_DOAISE BIT(5 )
#define SDW_SHIM3_INTEL_VS_ACTMCTL_CLSS BIT(6 )
#define SDW_SHIM3_INTEL_VS_ACTMCTL_CLDS GENMASK(11 , 7 )
#define SDW_SHIM3_INTEL_VS_ACTMCTL_DODSE2 GENMASK(13 , 12 )
#define SDW_SHIM3_INTEL_VS_ACTMCTL_DOAISE2 BIT(14 )
#define SDW_SHIM3_INTEL_VS_ACTMCTL_CLDE BIT(15 )
/* ACE3+ Mic privacy control and status register */
#define SDW_SHIM2_INTEL_VS_PVCCS 0 x10
/**
* struct sdw_intel_stream_params_data : configuration passed during
* the @ params_stream callback , e . g . for interaction with DSP
* firmware .
*/
struct sdw_intel_stream_params_data {
struct snd_pcm_substream *substream;
struct snd_soc_dai *dai;
struct snd_pcm_hw_params *hw_params;
int link_id;
int alh_stream_id;
};
/**
* struct sdw_intel_stream_free_data : configuration passed during
* the @ free_stream callback , e . g . for interaction with DSP
* firmware .
*/
struct sdw_intel_stream_free_data {
struct snd_pcm_substream *substream;
struct snd_soc_dai *dai;
int link_id;
};
/**
* struct sdw_intel_ops : Intel audio driver callback ops
*
*/
struct sdw_intel_ops {
int (*params_stream)(struct device *dev,
struct sdw_intel_stream_params_data *params_data);
int (*free_stream)(struct device *dev,
struct sdw_intel_stream_free_data *free_data);
int (*trigger)(struct snd_pcm_substream *substream, int cmd, struct snd_soc_dai *dai);
};
/**
* struct sdw_intel_acpi_info - Soundwire Intel information found in ACPI tables
* @ handle : ACPI controller handle
* @ count : link count found with " sdw - master - count " or " sdw - manager - list " property
* @ link_mask : bit - wise mask listing links enabled by BIOS menu
*
* this structure could be expanded to e . g . provide all the _ ADR
* information in case the link_mask is not sufficient to identify
* platform capabilities .
*/
struct sdw_intel_acpi_info {
acpi_handle handle;
int count;
u32 link_mask;
};
struct sdw_intel_link_dev;
/* Intel clock-stop/pm_runtime quirk definitions */
/*
* Force the clock to remain on during pm_runtime suspend . This might
* be needed if Slave devices do not have an alternate clock source or
* if the latency requirements are very strict .
*/
#define SDW_INTEL_CLK_STOP_NOT_ALLOWED BIT(0 )
/*
* Stop the bus during pm_runtime suspend . If set , a complete bus
* reset and re - enumeration will be performed when the bus
* restarts . This mode shall not be used if Slave devices can generate
* in - band wakes .
*/
#define SDW_INTEL_CLK_STOP_TEARDOWN BIT(1 )
/*
* Stop the bus during pm_suspend if Slaves are not wake capable
* ( e . g . speaker amplifiers ) . The clock - stop mode is typically
* slightly higher power than when the IP is completely powered - off .
*/
#define SDW_INTEL_CLK_STOP_WAKE_CAPABLE_ONLY BIT(2 )
/*
* Require a bus reset ( and complete re - enumeration ) when exiting
* clock stop modes . This may be needed if the controller power was
* turned off and all context lost . This quirk shall not be used if a
* Slave device needs to remain enumerated and keep its context ,
* e . g . to provide the reasons for the wake , report acoustic events or
* pass a history buffer .
*/
#define SDW_INTEL_CLK_STOP_BUS_RESET BIT(3 )
struct hdac_bus;
/**
* struct sdw_intel_ctx - context allocated by the controller
* driver probe
* @ count : link count
* @ mmio_base : mmio base of SoundWire registers , only used to check
* hardware capabilities after all power dependencies are settled .
* @ link_mask : bit - wise mask listing SoundWire links reported by the
* Controller
* @ handle : ACPI parent handle
* @ ldev : information for each link ( controller - specific and kept
* opaque here )
* @ link_list : list to handle interrupts across all links
* @ shim_lock : mutex to handle concurrent rmw access to shared SHIM registers .
* @ shim_mask : flags to track initialization of SHIM shared registers
* @ shim_base : sdw shim base .
* @ alh_base : sdw alh base .
* @ peripherals : array representing Peripherals exposed across all enabled links
*/
struct sdw_intel_ctx {
int count;
void __iomem *mmio_base;
u32 link_mask;
acpi_handle handle;
struct sdw_intel_link_dev **ldev;
struct list_head link_list;
struct mutex shim_lock; /* lock for access to shared SHIM registers */
u32 shim_mask;
u32 shim_base;
u32 alh_base;
struct sdw_peripherals *peripherals;
};
/**
* struct sdw_intel_res - Soundwire Intel global resource structure ,
* typically populated by the DSP driver
*
* @ hw_ops : abstraction for platform ops
* @ count : link count
* @ mmio_base : mmio base of SoundWire registers
* @ irq : interrupt number
* @ handle : ACPI parent handle
* @ parent : parent device
* @ ops : callback ops
* @ dev : device implementing hwparams and free callbacks
* @ link_mask : bit - wise mask listing links selected by the DSP driver
* This mask may be a subset of the one reported by the controller since
* machine - specific quirks are handled in the DSP driver .
* @ clock_stop_quirks : mask array of possible behaviors requested by the
* DSP driver . The quirks are common for all links for now .
* @ shim_base : sdw shim base .
* @ alh_base : sdw alh base .
* @ ext : extended HDaudio link support
* @ mic_privacy : ACE version supports microphone privacy
* @ hbus : hdac_bus pointer , needed for power management
* @ eml_lock : mutex protecting shared registers in the HDaudio multi - link
* space
*/
struct sdw_intel_res {
const struct sdw_intel_hw_ops *hw_ops;
int count;
void __iomem *mmio_base;
int irq;
acpi_handle handle;
struct device *parent;
const struct sdw_intel_ops *ops;
struct device *dev;
u32 link_mask;
u32 clock_stop_quirks;
u32 shim_base;
u32 alh_base;
bool ext;
bool mic_privacy;
struct hdac_bus *hbus;
struct mutex *eml_lock;
};
/*
* On Intel platforms , the SoundWire IP has dependencies on power
* rails shared with the DSP , and the initialization steps are split
* in three . First an ACPI scan to check what the firmware describes
* in DSDT tables , then an allocation step ( with no hardware
* configuration but with all the relevant devices created ) and last
* the actual hardware configuration . The final stage is a global
* interrupt enable which is controlled by the DSP driver . Splitting
* these phases helps simplify the boot flow and make early decisions
* on e . g . which machine driver to select ( I2S mode , HDaudio or
* SoundWire ) .
*/
int sdw_intel_acpi_scan(acpi_handle parent_handle,
struct sdw_intel_acpi_info *info);
void sdw_intel_process_wakeen_event(struct sdw_intel_ctx *ctx);
struct sdw_intel_ctx *
sdw_intel_probe(struct sdw_intel_res *res);
int sdw_intel_startup(struct sdw_intel_ctx *ctx);
void sdw_intel_exit(struct sdw_intel_ctx *ctx);
irqreturn_t sdw_intel_thread(int irq, void *dev_id);
#define SDW_INTEL_QUIRK_MASK_BUS_DISABLE BIT(1 )
struct sdw_intel;
/* struct intel_sdw_hw_ops - SoundWire ops for Intel platforms.
* @ debugfs_init : initialize all debugfs capabilities
* @ debugfs_exit : close and cleanup debugfs capabilities
* @ get_link_count : fetch link count from hardware registers
* @ register_dai : read all PDI information and register DAIs
* @ check_clock_stop : throw error message if clock is not stopped .
* @ start_bus : normal start
* @ start_bus_after_reset : start after reset
* @ start_bus_after_clock_stop : start after mode0 clock stop
* @ stop_bus : stop all bus
* @ link_power_up : power - up using chip - specific helpers
* @ link_power_down : power - down with chip - specific helpers
* @ shim_check_wake : check if a wake was received
* @ shim_wake : enable / disable in - band wake management
* @ pre_bank_switch : helper for bus management
* @ post_bank_switch : helper for bus management
* @ sync_arm : helper for multi - link synchronization
* @ sync_go_unlocked : helper for multi - link synchronization -
* shim_lock is assumed to be locked at higher level
* @ sync_go : helper for multi - link synchronization
* @ sync_check_cmdsync_unlocked : helper for multi - link synchronization
* and bank switch - shim_lock is assumed to be locked at higher level
* @ program_sdi : helper for codec command / control based on dev_num
*/
struct sdw_intel_hw_ops {
void (*debugfs_init)(struct sdw_intel *sdw);
void (*debugfs_exit)(struct sdw_intel *sdw);
int (*get_link_count)(struct sdw_intel *sdw);
int (*register_dai)(struct sdw_intel *sdw);
void (*check_clock_stop)(struct sdw_intel *sdw);
int (*start_bus)(struct sdw_intel *sdw);
int (*start_bus_after_reset)(struct sdw_intel *sdw);
int (*start_bus_after_clock_stop)(struct sdw_intel *sdw);
int (*stop_bus)(struct sdw_intel *sdw, bool clock_stop);
int (*link_power_up)(struct sdw_intel *sdw);
int (*link_power_down)(struct sdw_intel *sdw);
int (*shim_check_wake)(struct sdw_intel *sdw);
void (*shim_wake)(struct sdw_intel *sdw, bool wake_enable);
int (*pre_bank_switch)(struct sdw_intel *sdw);
int (*post_bank_switch)(struct sdw_intel *sdw);
void (*sync_arm)(struct sdw_intel *sdw);
int (*sync_go_unlocked)(struct sdw_intel *sdw);
int (*sync_go)(struct sdw_intel *sdw);
bool (*sync_check_cmdsync_unlocked)(struct sdw_intel *sdw);
void (*program_sdi)(struct sdw_intel *sdw, int dev_num);
int (*bpt_send_async)(struct sdw_intel *sdw, struct sdw_slave *slave,
struct sdw_bpt_msg *msg);
int (*bpt_wait)(struct sdw_intel *sdw, struct sdw_slave *slave, struct sdw_bpt_msg *msg);
};
extern const struct sdw_intel_hw_ops sdw_intel_cnl_hw_ops;
extern const struct sdw_intel_hw_ops sdw_intel_lnl_hw_ops;
/*
* IDA min selected to allow for 5 unconstrained devices per link ,
* and 6 system - unique Device Numbers for wake - capable devices .
*/
#define SDW_INTEL_DEV_NUM_IDA_MIN 6
/*
* Max number of links supported in hardware
*/
#define SDW_INTEL_MAX_LINKS 5
#endif
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