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// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
//
// This file is provided under a dual BSD/GPLv2 license. When using or
// redistributing this file, you may do so under either license.
//
// Copyright(c) 2022 Intel Corporation. All rights reserved.
//
/*
* Management of HDaudio multi-link (capabilities, power, coupling)
*/
#include <sound/hdaudio_ext.h>
#include <sound/hda_register.h>
#include <linux/acpi.h>
#include <linux/module.h>
#include <linux/soundwire/sdw.h>
#include <linux/soundwire/sdw_intel.h>
#include <sound/intel-dsp-config.h>
#include <sound/intel-nhlt.h>
#include <sound/sof.h>
#include <sound/sof/xtensa.h>
#include "../sof-audio.h"
#include "../sof-pci-dev.h"
#include "../ops.h"
#include "hda.h"
#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
void hda_bus_ml_get_capabilities(struct hdac_bus *bus)
{
if (bus->mlcap)
snd_hdac_ext_bus_get_ml_capabilities(bus);
}
void hda_bus_ml_free(struct hdac_bus *bus)
{
struct hdac_ext_link *hlink;
if (!bus->mlcap)
return;
while (!list_empty(&bus->hlink_list)) {
hlink = list_first_entry(&bus->hlink_list, struct hdac_ext_link, list);
list_del(&hlink->list);
kfree(hlink);
}
}
void hda_bus_ml_put_all(struct hdac_bus *bus)
{
struct hdac_ext_link *hlink;
list_for_each_entry(hlink, &bus->hlink_list, list)
snd_hdac_ext_bus_link_put(bus, hlink);
}
void hda_bus_ml_reset_losidv(struct hdac_bus *bus)
{
struct hdac_ext_link *hlink;
/* Reset stream-to-link mapping */
list_for_each_entry(hlink, &bus->hlink_list, list)
writel(0, hlink->ml_addr + AZX_REG_ML_LOSIDV);
}
int hda_bus_ml_resume(struct hdac_bus *bus)
{
struct hdac_ext_link *hlink;
int ret;
/* power up links that were active before suspend */
list_for_each_entry(hlink, &bus->hlink_list, list) {
if (hlink->ref_count) {
ret = snd_hdac_ext_bus_link_power_up(hlink);
if (ret < 0)
return ret;
}
}
return 0;
}
int hda_bus_ml_suspend(struct hdac_bus *bus)
{
return snd_hdac_ext_bus_link_power_down_all(bus);
}
#endif
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