// 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",	},	{}}; static const struct dmi_system_id community_key_platforms[] = {	{		.ident = "Up Squared",		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "AAEON"),			DMI_MATCH(DMI_BOARD_NAME, "UP-APL01"),		}	},	{		.ident = "Up Extreme",		.matches = {			DMI_MATCH(DMI_SYS_VENDOR, "AAEON"),			DMI_MATCH(DMI_BOARD_NAME, "UP-WHL01"),		}	},	{		.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;	const struct snd_sof_dsp_ops *ops;	int ret; 	dev_dbg(&pci->dev, "PCI DSP detected"); 	/* get ops for platform */	ops = desc->ops;	if (!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 = (struct sof_dev_desc *)pci_id->driver_data;	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");