sound/soc/sof/sof-pci-dev.c - linux - Git at Google

 // 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. All rights reserved.
 //
 // Author: Liam Girdwood <liam.r.girdwood@linux.intel.com>
 //

 #include <linux/firmware.h>
 #include <linux/dmi.h>
 #include <linux/module.h>
 #include <linux/pci.h>
 #include <linux/pm_runtime.h>
 #include <sound/soc-acpi.h>
 #include <sound/soc-acpi-intel-match.h>
 #include <sound/sof.h>
 #include "ops.h"
 #include "sof-pci-dev.h"

 static char *fw_path;
 module_param(fw_path, charp, 0444);
 MODULE_PARM_DESC(fw_path, "alternate path for SOF firmware.");

 static char *tplg_path;
 module_param(tplg_path, charp, 0444);
 MODULE_PARM_DESC(tplg_path, "alternate path for SOF topology.");

 static int sof_pci_debug;
 module_param_named(sof_pci_debug, sof_pci_debug, int, 0444);
 MODULE_PARM_DESC(sof_pci_debug, "SOF PCI debug options (0x0 all off)");

 static const char *sof_override_tplg_name;

 #define SOF_PCI_DISABLE_PM_RUNTIME BIT(0)

 static int sof_tplg_cb(const struct dmi_system_id *id)
 {
 	sof_override_tplg_name = id->driver_data;
 	return 1;
 }

 static const struct dmi_system_id sof_tplg_table[] = {
 	{
 		.callback = sof_tplg_cb,
 		.matches = {
 			DMI_MATCH(DMI_PRODUCT_FAMILY, "Google_Volteer"),
 			DMI_MATCH(DMI_OEM_STRING, "AUDIO-MAX98373_ALC5682I_I2S_UP4"),
 		},
 		.driver_data = "sof-tgl-rt5682-ssp0-max98373-ssp2.tplg",
 	},
 	{
 		.callback = sof_tplg_cb,
 		.matches = {
 			DMI_MATCH(DMI_SYS_VENDOR, "Intel Corporation"),
 			DMI_MATCH(DMI_PRODUCT_NAME, "Alder Lake Client Platform"),
 			DMI_MATCH(DMI_OEM_STRING, "AUDIO-ADL_MAX98373_ALC5682I_I2S"),
 		},
 		.driver_data = "sof-adl-rt5682-ssp0-max98373-ssp2.tplg",
 	},
 	{
 		.callback = sof_tplg_cb,
 		.matches = {
 			DMI_MATCH(DMI_PRODUCT_FAMILY, "Google_Brya"),
 			DMI_MATCH(DMI_OEM_STRING, "AUDIO-MAX98390_ALC5682I_I2S"),
 		},
 		.driver_data = "sof-adl-max98390-ssp2-rt5682-ssp0.tplg",
 	},
 	{
 		.callback = sof_tplg_cb,
 		.matches = {
 			DMI_MATCH(DMI_PRODUCT_FAMILY, "Google_Brya"),
 			DMI_MATCH(DMI_OEM_STRING, "AUDIO_AMP-MAX98360_ALC5682VS_I2S_2WAY"),
 		},
 		.driver_data = "sof-adl-max98360a-rt5682-2way.tplg",
 	},
 	{
 		.callback = sof_tplg_cb,
 		.matches = {
 			DMI_MATCH(DMI_PRODUCT_FAMILY, "Google_Brya"),
 			DMI_MATCH(DMI_OEM_STRING, "AUDIO-AUDIO_MAX98357_ALC5682I_I2S_2WAY"),
 		},
 		.driver_data = "sof-adl-max98357a-rt5682-2way.tplg",
 	},

 	{}
 };

 static const struct dmi_system_id community_key_platforms[] = {
 	{
 		.ident = "Up boards",
 		.matches = {
 			DMI_MATCH(DMI_SYS_VENDOR, "AAEON"),
 		}
 	},
 	{
 		.ident = "Google Chromebooks",
 		.matches = {
 			DMI_MATCH(DMI_SYS_VENDOR, "Google"),
 		}
 	},
 	{},
 };

 const struct dev_pm_ops sof_pci_pm = {
 	.prepare = snd_sof_prepare,
 	.complete = snd_sof_complete,
 	SET_SYSTEM_SLEEP_PM_OPS(snd_sof_suspend, snd_sof_resume)
 	SET_RUNTIME_PM_OPS(snd_sof_runtime_suspend, snd_sof_runtime_resume,
 			   snd_sof_runtime_idle)
 };
 EXPORT_SYMBOL_NS(sof_pci_pm, SND_SOC_SOF_PCI_DEV);

 static void sof_pci_probe_complete(struct device *dev)
 {
 	dev_dbg(dev, "Completing SOF PCI probe");

 	if (sof_pci_debug & SOF_PCI_DISABLE_PM_RUNTIME)
 		return;

 	/* allow runtime_pm */
 	pm_runtime_set_autosuspend_delay(dev, SND_SOF_SUSPEND_DELAY_MS);
 	pm_runtime_use_autosuspend(dev);

 	/*
 	 * runtime pm for pci device is "forbidden" by default.
 	 * so call pm_runtime_allow() to enable it.
 	 */
 	pm_runtime_allow(dev);

 	/* mark last_busy for pm_runtime to make sure not suspend immediately */
 	pm_runtime_mark_last_busy(dev);

 	/* follow recommendation in pci-driver.c to decrement usage counter */
 	pm_runtime_put_noidle(dev);
 }

 int sof_pci_probe(struct pci_dev *pci, const struct pci_device_id *pci_id)
 {
 	struct device *dev = &pci->dev;
 	const struct sof_dev_desc *desc =
 		(const struct sof_dev_desc *)pci_id->driver_data;
 	struct snd_sof_pdata *sof_pdata;
 	int ret;

 	dev_dbg(&pci->dev, "PCI DSP detected");

 	if (!desc->ops) {
 		dev_err(dev, "error: no matching PCI descriptor ops\n");
 		return -ENODEV;
 	}

 	sof_pdata = devm_kzalloc(dev, sizeof(*sof_pdata), GFP_KERNEL);
 	if (!sof_pdata)
 		return -ENOMEM;

 	ret = pcim_enable_device(pci);
 	if (ret < 0)
 		return ret;

 	ret = pci_request_regions(pci, "Audio DSP");
 	if (ret < 0)
 		return ret;

 	sof_pdata->name = pci_name(pci);
 	sof_pdata->desc = desc;
 	sof_pdata->dev = dev;
 	sof_pdata->fw_filename = desc->default_fw_filename;

 	/*
 	 * for platforms using the SOF community key, change the
 	 * default path automatically to pick the right files from the
 	 * linux-firmware tree. This can be overridden with the
 	 * fw_path kernel parameter, e.g. for developers.
 	 */

 	/* alternate fw and tplg filenames ? */
 	if (fw_path) {
 		sof_pdata->fw_filename_prefix = fw_path;

 		dev_dbg(dev,
 			"Module parameter used, changed fw path to %s\n",
 			sof_pdata->fw_filename_prefix);

 	} else if (dmi_check_system(community_key_platforms)) {
 		sof_pdata->fw_filename_prefix =
 			devm_kasprintf(dev, GFP_KERNEL, "%s/%s",
 				       sof_pdata->desc->default_fw_path,
 				       "community");

 		dev_dbg(dev,
 			"Platform uses community key, changed fw path to %s\n",
 			sof_pdata->fw_filename_prefix);
 	} else {
 		sof_pdata->fw_filename_prefix =
 			sof_pdata->desc->default_fw_path;
 	}

 	if (tplg_path)
 		sof_pdata->tplg_filename_prefix = tplg_path;
 	else
 		sof_pdata->tplg_filename_prefix =
 			sof_pdata->desc->default_tplg_path;

 	dmi_check_system(sof_tplg_table);
 	if (sof_override_tplg_name)
 		sof_pdata->tplg_filename = sof_override_tplg_name;

 	/* set callback to be called on successful device probe to enable runtime_pm */
 	sof_pdata->sof_probe_complete = sof_pci_probe_complete;

 	/* call sof helper for DSP hardware probe */
 	ret = snd_sof_device_probe(dev, sof_pdata);
 	if (ret)
 		pci_release_regions(pci);

 	return ret;
 }
 EXPORT_SYMBOL_NS(sof_pci_probe, SND_SOC_SOF_PCI_DEV);

 void sof_pci_remove(struct pci_dev *pci)
 {
 	/* call sof helper for DSP hardware remove */
 	snd_sof_device_remove(&pci->dev);

 	/* follow recommendation in pci-driver.c to increment usage counter */
 	if (snd_sof_device_probe_completed(&pci->dev) &&
 	    !(sof_pci_debug & SOF_PCI_DISABLE_PM_RUNTIME))
 		pm_runtime_get_noresume(&pci->dev);

 	/* release pci regions and disable device */
 	pci_release_regions(pci);
 }
 EXPORT_SYMBOL_NS(sof_pci_remove, SND_SOC_SOF_PCI_DEV);

 void sof_pci_shutdown(struct pci_dev *pci)
 {
 	snd_sof_device_shutdown(&pci->dev);
 }
 EXPORT_SYMBOL_NS(sof_pci_shutdown, SND_SOC_SOF_PCI_DEV);

 MODULE_LICENSE("Dual BSD/GPL");
	// 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. All rights reserved.
	//
	// Author: Liam Girdwood <liam.r.girdwood@linux.intel.com>
	//

	#include <linux/firmware.h>
	#include <linux/dmi.h>
	#include <linux/module.h>
	#include <linux/pci.h>
	#include <linux/pm_runtime.h>
	#include <sound/soc-acpi.h>
	#include <sound/soc-acpi-intel-match.h>
	#include <sound/sof.h>
	#include "ops.h"
	#include "sof-pci-dev.h"

	static char *fw_path;
	module_param(fw_path, charp, 0444);
	MODULE_PARM_DESC(fw_path, "alternate path for SOF firmware.");

	static char *tplg_path;
	module_param(tplg_path, charp, 0444);
	MODULE_PARM_DESC(tplg_path, "alternate path for SOF topology.");

	static int sof_pci_debug;
	module_param_named(sof_pci_debug, sof_pci_debug, int, 0444);
	MODULE_PARM_DESC(sof_pci_debug, "SOF PCI debug options (0x0 all off)");

	static const char *sof_override_tplg_name;

	#define SOF_PCI_DISABLE_PM_RUNTIME BIT(0)

	static int sof_tplg_cb(const struct dmi_system_id *id)
	{
	sof_override_tplg_name = id->driver_data;
	return 1;
	}

	static const struct dmi_system_id sof_tplg_table[] = {
	{
	.callback = sof_tplg_cb,
	.matches = {
	DMI_MATCH(DMI_PRODUCT_FAMILY, "Google_Volteer"),
	DMI_MATCH(DMI_OEM_STRING, "AUDIO-MAX98373_ALC5682I_I2S_UP4"),
	},
	.driver_data = "sof-tgl-rt5682-ssp0-max98373-ssp2.tplg",
	},
	{
	.callback = sof_tplg_cb,
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "Intel Corporation"),
	DMI_MATCH(DMI_PRODUCT_NAME, "Alder Lake Client Platform"),
	DMI_MATCH(DMI_OEM_STRING, "AUDIO-ADL_MAX98373_ALC5682I_I2S"),
	},
	.driver_data = "sof-adl-rt5682-ssp0-max98373-ssp2.tplg",
	},
	{
	.callback = sof_tplg_cb,
	.matches = {
	DMI_MATCH(DMI_PRODUCT_FAMILY, "Google_Brya"),
	DMI_MATCH(DMI_OEM_STRING, "AUDIO-MAX98390_ALC5682I_I2S"),
	},
	.driver_data = "sof-adl-max98390-ssp2-rt5682-ssp0.tplg",
	},
	{
	.callback = sof_tplg_cb,
	.matches = {
	DMI_MATCH(DMI_PRODUCT_FAMILY, "Google_Brya"),
	DMI_MATCH(DMI_OEM_STRING, "AUDIO_AMP-MAX98360_ALC5682VS_I2S_2WAY"),
	},
	.driver_data = "sof-adl-max98360a-rt5682-2way.tplg",
	},
	{
	.callback = sof_tplg_cb,
	.matches = {
	DMI_MATCH(DMI_PRODUCT_FAMILY, "Google_Brya"),
	DMI_MATCH(DMI_OEM_STRING, "AUDIO-AUDIO_MAX98357_ALC5682I_I2S_2WAY"),
	},
	.driver_data = "sof-adl-max98357a-rt5682-2way.tplg",
	},

	{}
	};

	static const struct dmi_system_id community_key_platforms[] = {
	{
	.ident = "Up boards",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "AAEON"),
	}
	},
	{
	.ident = "Google Chromebooks",
	.matches = {
	DMI_MATCH(DMI_SYS_VENDOR, "Google"),
	}
	},
	{},
	};

	const struct dev_pm_ops sof_pci_pm = {
	.prepare = snd_sof_prepare,
	.complete = snd_sof_complete,
	SET_SYSTEM_SLEEP_PM_OPS(snd_sof_suspend, snd_sof_resume)
	SET_RUNTIME_PM_OPS(snd_sof_runtime_suspend, snd_sof_runtime_resume,
	snd_sof_runtime_idle)
	};
	EXPORT_SYMBOL_NS(sof_pci_pm, SND_SOC_SOF_PCI_DEV);

	static void sof_pci_probe_complete(struct device *dev)
	{
	dev_dbg(dev, "Completing SOF PCI probe");

	if (sof_pci_debug & SOF_PCI_DISABLE_PM_RUNTIME)
	return;

	/* allow runtime_pm */
	pm_runtime_set_autosuspend_delay(dev, SND_SOF_SUSPEND_DELAY_MS);
	pm_runtime_use_autosuspend(dev);

	/*
	* runtime pm for pci device is "forbidden" by default.
	* so call pm_runtime_allow() to enable it.
	*/
	pm_runtime_allow(dev);

	/* mark last_busy for pm_runtime to make sure not suspend immediately */
	pm_runtime_mark_last_busy(dev);

	/* follow recommendation in pci-driver.c to decrement usage counter */
	pm_runtime_put_noidle(dev);
	}

	int sof_pci_probe(struct pci_dev pci, const struct pci_device_id pci_id)
	{
	struct device *dev = &pci->dev;
	const struct sof_dev_desc *desc =
	(const struct sof_dev_desc *)pci_id->driver_data;
	struct snd_sof_pdata *sof_pdata;
	int ret;

	dev_dbg(&pci->dev, "PCI DSP detected");

	if (!desc->ops) {
	dev_err(dev, "error: no matching PCI descriptor ops\n");
	return -ENODEV;
	}

	sof_pdata = devm_kzalloc(dev, sizeof(*sof_pdata), GFP_KERNEL);
	if (!sof_pdata)
	return -ENOMEM;

	ret = pcim_enable_device(pci);
	if (ret < 0)
	return ret;

	ret = pci_request_regions(pci, "Audio DSP");
	if (ret < 0)
	return ret;

	sof_pdata->name = pci_name(pci);
	sof_pdata->desc = desc;
	sof_pdata->dev = dev;
	sof_pdata->fw_filename = desc->default_fw_filename;

	/*
	* for platforms using the SOF community key, change the
	* default path automatically to pick the right files from the
	* linux-firmware tree. This can be overridden with the
	* fw_path kernel parameter, e.g. for developers.
	*/

	/* alternate fw and tplg filenames ? */
	if (fw_path) {
	sof_pdata->fw_filename_prefix = fw_path;

	dev_dbg(dev,
	"Module parameter used, changed fw path to %s\n",
	sof_pdata->fw_filename_prefix);

	} else if (dmi_check_system(community_key_platforms)) {
	sof_pdata->fw_filename_prefix =
	devm_kasprintf(dev, GFP_KERNEL, "%s/%s",
	sof_pdata->desc->default_fw_path,
	"community");

	dev_dbg(dev,
	"Platform uses community key, changed fw path to %s\n",
	sof_pdata->fw_filename_prefix);
	} else {
	sof_pdata->fw_filename_prefix =
	sof_pdata->desc->default_fw_path;
	}

	if (tplg_path)
	sof_pdata->tplg_filename_prefix = tplg_path;
	else
	sof_pdata->tplg_filename_prefix =
	sof_pdata->desc->default_tplg_path;

	dmi_check_system(sof_tplg_table);
	if (sof_override_tplg_name)
	sof_pdata->tplg_filename = sof_override_tplg_name;

	/* set callback to be called on successful device probe to enable runtime_pm */
	sof_pdata->sof_probe_complete = sof_pci_probe_complete;

	/* call sof helper for DSP hardware probe */
	ret = snd_sof_device_probe(dev, sof_pdata);
	if (ret)
	pci_release_regions(pci);

	return ret;
	}
	EXPORT_SYMBOL_NS(sof_pci_probe, SND_SOC_SOF_PCI_DEV);

	void sof_pci_remove(struct pci_dev *pci)
	{
	/* call sof helper for DSP hardware remove */
	snd_sof_device_remove(&pci->dev);

	/* follow recommendation in pci-driver.c to increment usage counter */
	if (snd_sof_device_probe_completed(&pci->dev) &&
	!(sof_pci_debug & SOF_PCI_DISABLE_PM_RUNTIME))
	pm_runtime_get_noresume(&pci->dev);

	/* release pci regions and disable device */
	pci_release_regions(pci);
	}
	EXPORT_SYMBOL_NS(sof_pci_remove, SND_SOC_SOF_PCI_DEV);

	void sof_pci_shutdown(struct pci_dev *pci)
	{
	snd_sof_device_shutdown(&pci->dev);
	}
	EXPORT_SYMBOL_NS(sof_pci_shutdown, SND_SOC_SOF_PCI_DEV);

	MODULE_LICENSE("Dual BSD/GPL");