path: root/sound/soc/sof/intel/hda.c

// 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) 2018 Intel Corporation
//
// Authors: Liam Girdwood <liam.r.girdwood@linux.intel.com>
//	    Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
//	    Rander Wang <rander.wang@intel.com>
//          Keyon Jie <yang.jie@linux.intel.com>
//

/*
 * Hardware interface for generic Intel audio DSP HDA IP
 */

#include <sound/hdaudio_ext.h>
#include <sound/hda_register.h>

#include <linux/acpi.h>
#include <linux/debugfs.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/soc-acpi-intel-ssp-common.h>
#include <sound/sof.h>
#include <sound/sof/xtensa.h>
#include <sound/hda-mlink.h>
#include "../sof-audio.h"
#include "../sof-pci-dev.h"
#include "../ops.h"
#include "../ipc4-topology.h"
#include "hda.h"

#include <trace/events/sof_intel.h>

#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
#include <sound/soc-acpi-intel-match.h>
#endif

/* platform specific devices */
#include "shim.h"

#if IS_ENABLED(CONFIG_SND_SOC_SOF_INTEL_SOUNDWIRE)

/*
 * The default for SoundWire clock stop quirks is to power gate the IP
 * and do a Bus Reset, this will need to be modified when the DSP
 * needs to remain in D0i3 so that the Master does not lose context
 * and enumeration is not required on clock restart
 */
static int sdw_clock_stop_quirks = SDW_INTEL_CLK_STOP_BUS_RESET;
module_param(sdw_clock_stop_quirks, int, 0444);
MODULE_PARM_DESC(sdw_clock_stop_quirks, "SOF SoundWire clock stop quirks");

static int sdw_params_stream(struct device *dev,
			     struct sdw_intel_stream_params_data *params_data)
{
	struct snd_soc_dai *d = params_data->dai;
	struct snd_soc_dapm_widget *w = snd_soc_dai_get_widget(d, params_data->substream->stream);
	struct snd_sof_dai_config_data data = { 0 };

	if (!w) {
		dev_err(dev, "%s widget not found, check amp link num in the topology\n",
			d->name);
		return -EINVAL;
	}
	data.dai_index = (params_data->link_id << 8) | d->id;
	data.dai_data = params_data->alh_stream_id;
	data.dai_node_id = data.dai_data;

	return hda_dai_config(w, SOF_DAI_CONFIG_FLAGS_HW_PARAMS, &data);
}

static int sdw_params_free(struct device *dev, struct sdw_intel_stream_free_data *free_data)
{
	struct snd_soc_dai *d = free_data->dai;
	struct snd_soc_dapm_widget *w = snd_soc_dai_get_widget(d, free_data->substream->stream);
	struct snd_sof_dev *sdev = widget_to_sdev(w);

	if (sdev->pdata->ipc_type == SOF_IPC_TYPE_4) {
		struct snd_sof_widget *swidget = w->dobj.private;
		struct snd_sof_dai *dai = swidget->private;
		struct sof_ipc4_copier_data *copier_data;
		struct sof_ipc4_copier *ipc4_copier;

		ipc4_copier = dai->private;
		ipc4_copier->dai_index = 0;
		copier_data = &ipc4_copier->data;

		/* clear the node ID */
		copier_data->gtw_cfg.node_id &= ~SOF_IPC4_NODE_INDEX_MASK;
	}

	return 0;
}

struct sdw_intel_ops sdw_callback = {
	.params_stream = sdw_params_stream,
	.free_stream = sdw_params_free,
};

static int sdw_ace2x_params_stream(struct device *dev,
				   struct sdw_intel_stream_params_data *params_data)
{
	return sdw_hda_dai_hw_params(params_data->substream,
				     params_data->hw_params,
				     params_data->dai,
				     params_data->link_id,
				     params_data->alh_stream_id);
}

static int sdw_ace2x_free_stream(struct device *dev,
				 struct sdw_intel_stream_free_data *free_data)
{
	return sdw_hda_dai_hw_free(free_data->substream,
				   free_data->dai,
				   free_data->link_id);
}

static int sdw_ace2x_trigger(struct snd_pcm_substream *substream, int cmd, struct snd_soc_dai *dai)
{
	return sdw_hda_dai_trigger(substream, cmd, dai);
}

static struct sdw_intel_ops sdw_ace2x_callback = {
	.params_stream = sdw_ace2x_params_stream,
	.free_stream = sdw_ace2x_free_stream,
	.trigger = sdw_ace2x_trigger,
};

static int hda_sdw_acpi_scan(struct snd_sof_dev *sdev)
{
	u32 interface_mask = hda_get_interface_mask(sdev);
	struct sof_intel_hda_dev *hdev;
	acpi_handle handle;
	int ret;

	if (!(interface_mask & BIT(SOF_DAI_INTEL_ALH)))
		return -EINVAL;

	handle = ACPI_HANDLE(sdev->dev);

	/* save ACPI info for the probe step */
	hdev = sdev->pdata->hw_pdata;

	ret = sdw_intel_acpi_scan(handle, &hdev->info);
	if (ret < 0)
		return -EINVAL;

	return 0;
}

static int hda_sdw_probe(struct snd_sof_dev *sdev)
{
	const struct sof_intel_dsp_desc *chip;
	struct sof_intel_hda_dev *hdev;
	struct sdw_intel_res res;
	void *sdw;

	hdev = sdev->pdata->hw_pdata;

	memset(&res, 0, sizeof(res));

	chip = get_chip_info(sdev->pdata);
	if (chip->hw_ip_version < SOF_INTEL_ACE_2_0) {
		res.mmio_base = sdev->bar[HDA_DSP_BAR];
		res.hw_ops = &sdw_intel_cnl_hw_ops;
		res.shim_base = hdev->desc->sdw_shim_base;
		res.alh_base = hdev->desc->sdw_alh_base;
		res.ext = false;
		res.ops = &sdw_callback;
	} else {
		/*
		 * retrieve eml_lock needed to protect shared registers
		 * in the HDaudio multi-link areas
		 */
		res.eml_lock = hdac_bus_eml_get_mutex(sof_to_bus(sdev), true,
						      AZX_REG_ML_LEPTR_ID_SDW);
		if (!res.eml_lock)
			return -ENODEV;

		res.mmio_base = sdev->bar[HDA_DSP_HDA_BAR];
		/*
		 * the SHIM and SoundWire register offsets are link-specific
		 * and will be determined when adding auxiliary devices
		 */
		res.hw_ops = &sdw_intel_lnl_hw_ops;
		res.ext = true;
		res.ops = &sdw_ace2x_callback;

		/* ACE3+ supports microphone privacy */
		if (chip->hw_ip_version >= SOF_INTEL_ACE_3_0)
			res.mic_privacy = true;
	}
	res.irq = sdev->ipc_irq;
	res.handle = hdev->info.handle;
	res.parent = sdev->dev;

	res.dev = sdev->dev;
	res.clock_stop_quirks = sdw_clock_stop_quirks;
	res.hbus = sof_to_bus(sdev);

	/*
	 * ops and arg fields are not populated for now,
	 * they will be needed when the DAI callbacks are
	 * provided
	 */

	/* we could filter links here if needed, e.g for quirks */
	res.count = hdev->info.count;
	res.link_mask = hdev->info.link_mask;

	sdw = sdw_intel_probe(&res);
	if (!sdw) {
		dev_err(sdev->dev, "error: SoundWire probe failed\n");
		return -EINVAL;
	}

	/* save context */
	hdev->sdw = sdw;

	return 0;
}

int hda_sdw_startup(struct snd_sof_dev *sdev)
{
	struct sof_intel_hda_dev *hdev;
	struct snd_sof_pdata *pdata = sdev->pdata;
	int ret;

	hdev = sdev->pdata->hw_pdata;

	if (!hdev->sdw)
		return 0;

	if (pdata->machine && !pdata->machine->mach_params.link_mask)
		return 0;

	ret = hda_sdw_check_lcount(sdev);
	if (ret < 0)
		return ret;

	return sdw_intel_startup(hdev->sdw);
}
EXPORT_SYMBOL_NS(hda_sdw_startup, "SND_SOC_SOF_INTEL_HDA_GENERIC");

static int hda_sdw_exit(struct snd_sof_dev *sdev)
{
	struct sof_intel_hda_dev *hdev;

	hdev = sdev->pdata->hw_pdata;

	if (hdev->sdw)
		sdw_intel_exit(hdev->sdw);
	hdev->sdw = NULL;

	hda_sdw_int_enable(sdev, false);

	return 0;
}

bool hda_common_check_sdw_irq(struct snd_sof_dev *sdev)
{
	struct sof_intel_hda_dev *hdev;
	bool ret = false;
	u32 irq_status;

	hdev = sdev->pdata->hw_pdata;

	if (!hdev->sdw)
		return ret;

	/* store status