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// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
// Copyright(c) 2023 Intel Corporation. All rights reserved.
/*
* Soundwire Intel ops for LunarLake
*/
#include <linux/acpi.h>
#include <linux/device.h>
#include <linux/soundwire/sdw_registers.h>
#include <linux/soundwire/sdw.h>
#include <linux/soundwire/sdw_intel.h>
#include <sound/hda-mlink.h>
#include "cadence_master.h"
#include "bus.h"
#include "intel.h"
static int intel_link_power_up(struct sdw_intel *sdw)
{
int ret;
mutex_lock(sdw->link_res->shim_lock);
ret = hdac_bus_eml_sdw_power_up_unlocked(sdw->link_res->hbus, sdw->instance);
if (ret < 0) {
dev_err(sdw->cdns.dev, "%s: hdac_bus_eml_sdw_power_up failed: %d\n",
__func__, ret);
goto out;
}
sdw->cdns.link_up = true;
out:
mutex_unlock(sdw->link_res->shim_lock);
return ret;
}
static int intel_link_power_down(struct sdw_intel *sdw)
{
int ret;
mutex_lock(sdw->link_res->shim_lock);
sdw->cdns.link_up = false;
ret = hdac_bus_eml_sdw_power_down_unlocked(sdw->link_res->hbus, sdw->instance);
if (ret < 0) {
dev_err(sdw->cdns.dev, "%s: hdac_bus_eml_sdw_power_down failed: %d\n",
__func__, ret);
/*
* we leave the sdw->cdns.link_up flag as false since we've disabled
* the link at this point and cannot handle interrupts any longer.
*/
}
mutex_unlock(sdw->link_res->shim_lock);
return ret;
}
const struct sdw_intel_hw_ops sdw_intel_lnl_hw_ops = {
.debugfs_init = intel_ace2x_debugfs_init,
.debugfs_exit = intel_ace2x_debugfs_exit,
.link_power_up = intel_link_power_up,
.link_power_down = intel_link_power_down,
};
EXPORT_SYMBOL_NS(sdw_intel_lnl_hw_ops, SOUNDWIRE_INTEL);
MODULE_IMPORT_NS(SND_SOC_SOF_HDA_MLINK);
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