246 lines
6.6 KiB
C
246 lines
6.6 KiB
C
/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
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/* Copyright(c) 2015-17 Intel Corporation. */
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#ifndef __SDW_INTEL_LOCAL_H
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#define __SDW_INTEL_LOCAL_H
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struct hdac_bus;
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/**
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* struct sdw_intel_link_res - Soundwire Intel link resource structure,
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* typically populated by the controller driver.
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* @hw_ops: platform-specific ops
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* @mmio_base: mmio base of SoundWire registers
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* @registers: Link IO registers base
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* @ip_offset: offset for MCP_IP registers
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* @shim: Audio shim pointer
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* @shim_vs: Audio vendor-specific shim pointer
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* @alh: ALH (Audio Link Hub) pointer
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* @irq: Interrupt line
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* @ops: Shim callback ops
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* @dev: device implementing hw_params and free callbacks
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* @shim_lock: mutex to handle access to shared SHIM registers
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* @shim_mask: global pointer to check SHIM register initialization
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* @clock_stop_quirks: mask defining requested behavior on pm_suspend
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* @link_mask: global mask needed for power-up/down sequences
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* @cdns: Cadence master descriptor
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* @list: used to walk-through all masters exposed by the same controller
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* @hbus: hdac_bus pointer, needed for power management
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*/
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struct sdw_intel_link_res {
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const struct sdw_intel_hw_ops *hw_ops;
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void __iomem *mmio_base; /* not strictly needed, useful for debug */
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void __iomem *registers;
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u32 ip_offset;
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void __iomem *shim;
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void __iomem *shim_vs;
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void __iomem *alh;
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int irq;
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const struct sdw_intel_ops *ops;
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struct device *dev;
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struct mutex *shim_lock; /* protect shared registers */
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u32 *shim_mask;
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u32 clock_stop_quirks;
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u32 link_mask;
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struct sdw_cdns *cdns;
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struct list_head list;
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struct hdac_bus *hbus;
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};
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struct sdw_intel {
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struct sdw_cdns cdns;
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int instance;
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struct sdw_intel_link_res *link_res;
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bool startup_done;
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#ifdef CONFIG_DEBUG_FS
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struct dentry *debugfs;
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#endif
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};
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struct sdw_intel_prop {
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u16 clde;
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u16 doaise2;
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u16 dodse2;
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u16 clds;
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u16 clss;
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u16 doaise;
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u16 doais;
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u16 dodse;
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u16 dods;
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};
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enum intel_pdi_type {
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INTEL_PDI_IN = 0,
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INTEL_PDI_OUT = 1,
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INTEL_PDI_BD = 2,
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};
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/*
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* Read, write helpers for HW registers
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*/
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static inline int intel_readl(void __iomem *base, int offset)
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{
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return readl(base + offset);
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}
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static inline void intel_writel(void __iomem *base, int offset, int value)
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{
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writel(value, base + offset);
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}
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static inline u16 intel_readw(void __iomem *base, int offset)
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{
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return readw(base + offset);
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}
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static inline void intel_writew(void __iomem *base, int offset, u16 value)
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{
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writew(value, base + offset);
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}
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#define cdns_to_intel(_cdns) container_of(_cdns, struct sdw_intel, cdns)
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#define INTEL_MASTER_RESET_ITERATIONS 10
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#define SDW_INTEL_DELAYED_ENUMERATION_MS 100
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#define SDW_INTEL_CHECK_OPS(sdw, cb) ((sdw) && (sdw)->link_res && (sdw)->link_res->hw_ops && \
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(sdw)->link_res->hw_ops->cb)
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#define SDW_INTEL_OPS(sdw, cb) ((sdw)->link_res->hw_ops->cb)
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#ifdef CONFIG_DEBUG_FS
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void intel_ace2x_debugfs_init(struct sdw_intel *sdw);
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void intel_ace2x_debugfs_exit(struct sdw_intel *sdw);
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#else
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static inline void intel_ace2x_debugfs_init(struct sdw_intel *sdw) {}
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static inline void intel_ace2x_debugfs_exit(struct sdw_intel *sdw) {}
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#endif
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static inline void sdw_intel_debugfs_init(struct sdw_intel *sdw)
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{
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if (SDW_INTEL_CHECK_OPS(sdw, debugfs_init))
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SDW_INTEL_OPS(sdw, debugfs_init)(sdw);
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}
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static inline void sdw_intel_debugfs_exit(struct sdw_intel *sdw)
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{
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if (SDW_INTEL_CHECK_OPS(sdw, debugfs_exit))
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SDW_INTEL_OPS(sdw, debugfs_exit)(sdw);
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}
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static inline int sdw_intel_register_dai(struct sdw_intel *sdw)
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{
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if (SDW_INTEL_CHECK_OPS(sdw, register_dai))
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return SDW_INTEL_OPS(sdw, register_dai)(sdw);
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return -ENOTSUPP;
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}
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static inline void sdw_intel_check_clock_stop(struct sdw_intel *sdw)
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{
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if (SDW_INTEL_CHECK_OPS(sdw, check_clock_stop))
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SDW_INTEL_OPS(sdw, check_clock_stop)(sdw);
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}
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static inline int sdw_intel_start_bus(struct sdw_intel *sdw)
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{
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if (SDW_INTEL_CHECK_OPS(sdw, start_bus))
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return SDW_INTEL_OPS(sdw, start_bus)(sdw);
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return -ENOTSUPP;
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}
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static inline int sdw_intel_start_bus_after_reset(struct sdw_intel *sdw)
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{
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if (SDW_INTEL_CHECK_OPS(sdw, start_bus_after_reset))
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return SDW_INTEL_OPS(sdw, start_bus_after_reset)(sdw);
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return -ENOTSUPP;
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}
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static inline int sdw_intel_start_bus_after_clock_stop(struct sdw_intel *sdw)
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{
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if (SDW_INTEL_CHECK_OPS(sdw, start_bus_after_clock_stop))
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return SDW_INTEL_OPS(sdw, start_bus_after_clock_stop)(sdw);
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return -ENOTSUPP;
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}
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static inline int sdw_intel_stop_bus(struct sdw_intel *sdw, bool clock_stop)
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{
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if (SDW_INTEL_CHECK_OPS(sdw, stop_bus))
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return SDW_INTEL_OPS(sdw, stop_bus)(sdw, clock_stop);
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return -ENOTSUPP;
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}
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static inline int sdw_intel_link_power_up(struct sdw_intel *sdw)
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{
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if (SDW_INTEL_CHECK_OPS(sdw, link_power_up))
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return SDW_INTEL_OPS(sdw, link_power_up)(sdw);
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return -ENOTSUPP;
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}
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static inline int sdw_intel_link_power_down(struct sdw_intel *sdw)
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{
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if (SDW_INTEL_CHECK_OPS(sdw, link_power_down))
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return SDW_INTEL_OPS(sdw, link_power_down)(sdw);
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return -ENOTSUPP;
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}
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static inline int sdw_intel_shim_check_wake(struct sdw_intel *sdw)
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{
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if (SDW_INTEL_CHECK_OPS(sdw, shim_check_wake))
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return SDW_INTEL_OPS(sdw, shim_check_wake)(sdw);
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return -ENOTSUPP;
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}
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static inline void sdw_intel_shim_wake(struct sdw_intel *sdw, bool wake_enable)
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{
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if (SDW_INTEL_CHECK_OPS(sdw, shim_wake))
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SDW_INTEL_OPS(sdw, shim_wake)(sdw, wake_enable);
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}
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static inline void sdw_intel_sync_arm(struct sdw_intel *sdw)
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{
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if (SDW_INTEL_CHECK_OPS(sdw, sync_arm))
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SDW_INTEL_OPS(sdw, sync_arm)(sdw);
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}
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static inline int sdw_intel_sync_go_unlocked(struct sdw_intel *sdw)
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{
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if (SDW_INTEL_CHECK_OPS(sdw, sync_go_unlocked))
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return SDW_INTEL_OPS(sdw, sync_go_unlocked)(sdw);
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return -ENOTSUPP;
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}
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static inline int sdw_intel_sync_go(struct sdw_intel *sdw)
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{
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if (SDW_INTEL_CHECK_OPS(sdw, sync_go))
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return SDW_INTEL_OPS(sdw, sync_go)(sdw);
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return -ENOTSUPP;
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}
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static inline bool sdw_intel_sync_check_cmdsync_unlocked(struct sdw_intel *sdw)
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{
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if (SDW_INTEL_CHECK_OPS(sdw, sync_check_cmdsync_unlocked))
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return SDW_INTEL_OPS(sdw, sync_check_cmdsync_unlocked)(sdw);
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return false;
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}
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static inline int sdw_intel_get_link_count(struct sdw_intel *sdw)
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{
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if (SDW_INTEL_CHECK_OPS(sdw, get_link_count))
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return SDW_INTEL_OPS(sdw, get_link_count)(sdw);
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return 4; /* default on older generations */
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}
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/* common bus management */
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int intel_start_bus(struct sdw_intel *sdw);
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int intel_start_bus_after_reset(struct sdw_intel *sdw);
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void intel_check_clock_stop(struct sdw_intel *sdw);
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int intel_start_bus_after_clock_stop(struct sdw_intel *sdw);
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int intel_stop_bus(struct sdw_intel *sdw, bool clock_stop);
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/* common bank switch routines */
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int intel_pre_bank_switch(struct sdw_intel *sdw);
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int intel_post_bank_switch(struct sdw_intel *sdw);
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#endif /* __SDW_INTEL_LOCAL_H */
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