linux/drivers/soundwire/intel_init.c

// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
// Copyright(c) 2015-17 Intel Corporation.

/*
 * SDW Intel Init Routines
 *
 * Initializes and creates SDW devices based on ACPI and Hardware values
 */

#include <linux/acpi.h>
#include <linux/export.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/auxiliary_bus.h>
#include <linux/pm_runtime.h>
#include <linux/soundwire/sdw_intel.h>
#include "cadence_master.h"
#include "bus.h"
#include "intel.h"
#include "intel_auxdevice.h"

static void intel_link_dev_release(struct device *dev)
{ … }

/* alloc, init and add link devices */
static struct sdw_intel_link_dev *intel_link_dev_register(struct sdw_intel_res *res,
							  struct sdw_intel_ctx *ctx,
							  struct fwnode_handle *fwnode,
							  const char *name,
							  int link_id)
{ … }

static void intel_link_dev_unregister(struct sdw_intel_link_dev *ldev)
{ … }

static int sdw_intel_cleanup(struct sdw_intel_ctx *ctx)
{ … }

irqreturn_t sdw_intel_thread(int irq, void *dev_id)
{ … }
EXPORT_SYMBOL_NS(…);

static struct sdw_intel_ctx
*sdw_intel_probe_controller(struct sdw_intel_res *res)
{ … }

static int
sdw_intel_startup_controller(struct sdw_intel_ctx *ctx)
{ … }

/**
 * sdw_intel_probe() - SoundWire Intel probe routine
 * @res: resource data
 *
 * This registers an auxiliary device for each Master handled by the controller,
 * and SoundWire Master and Slave devices will be created by the auxiliary
 * device probe. All the information necessary is stored in the context, and
 * the res argument pointer can be freed after this step.
 * This function will be called after sdw_intel_acpi_scan() by SOF probe.
 */
struct sdw_intel_ctx
*sdw_intel_probe(struct sdw_intel_res *res)
{ … }
EXPORT_SYMBOL_NS(…);

/**
 * sdw_intel_startup() - SoundWire Intel startup
 * @ctx: SoundWire context allocated in the probe
 *
 * Startup Intel SoundWire controller. This function will be called after
 * Intel Audio DSP is powered up.
 */
int sdw_intel_startup(struct sdw_intel_ctx *ctx)
{ … }
EXPORT_SYMBOL_NS(…);
/**
 * sdw_intel_exit() - SoundWire Intel exit
 * @ctx: SoundWire context allocated in the probe
 *
 * Delete the controller instances created and cleanup
 */
void sdw_intel_exit(struct sdw_intel_ctx *ctx)
{ … }
EXPORT_SYMBOL_NS(…);

void sdw_intel_process_wakeen_event(struct sdw_intel_ctx *ctx)
{ … }
EXPORT_SYMBOL_NS(…);

MODULE_LICENSE(…) …;
MODULE_DESCRIPTION(…) …;