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linux/drivers/soundwire/intel.h
Pierre-Louis Bossart 312316d5a1 soundwire: intel_ace2x: add debugfs support 
Add access to registers in SHIM and SHIM_VS (vendor-specific) areas.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20230515071042.2038-11-yung-chuan.liao@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2023-05-27 16:06:45 +05:30

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