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1// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)2//3// This file is provided under a dual BSD/GPLv2 license. When using or4// redistributing this file, you may do so under either license.5//6// Copyright(c) 2018 Intel Corporation7//8// Author: Liam Girdwood <liam.r.girdwood@linux.intel.com>9//10 11#include <linux/acpi.h>12#include <linux/firmware.h>13#include <linux/module.h>14#include <linux/pm_runtime.h>15#include <sound/soc-acpi.h>16#include <sound/soc-acpi-intel-match.h>17#include <sound/sof.h>18#include "../intel/common/soc-intel-quirks.h"19#include "ops.h"20#include "sof-acpi-dev.h"21 22/* platform specific devices */23#include "intel/shim.h"24 25static char *fw_path;26module_param(fw_path, charp, 0444);27MODULE_PARM_DESC(fw_path, "alternate path for SOF firmware.");28 29static char *tplg_path;30module_param(tplg_path, charp, 0444);31MODULE_PARM_DESC(tplg_path, "alternate path for SOF topology.");32 33static int sof_acpi_debug;34module_param_named(sof_acpi_debug, sof_acpi_debug, int, 0444);35MODULE_PARM_DESC(sof_acpi_debug, "SOF ACPI debug options (0x0 all off)");36 37#define SOF_ACPI_DISABLE_PM_RUNTIME BIT(0)38 39const struct dev_pm_ops sof_acpi_pm = {40 SET_SYSTEM_SLEEP_PM_OPS(snd_sof_suspend, snd_sof_resume)41 SET_RUNTIME_PM_OPS(snd_sof_runtime_suspend, snd_sof_runtime_resume,42 snd_sof_runtime_idle)43};44EXPORT_SYMBOL_NS(sof_acpi_pm, SND_SOC_SOF_ACPI_DEV);45 46static void sof_acpi_probe_complete(struct device *dev)47{48 dev_dbg(dev, "Completing SOF ACPI probe");49 50 if (sof_acpi_debug & SOF_ACPI_DISABLE_PM_RUNTIME)51 return;52 53 /* allow runtime_pm */54 pm_runtime_set_autosuspend_delay(dev, SND_SOF_SUSPEND_DELAY_MS);55 pm_runtime_use_autosuspend(dev);56 pm_runtime_enable(dev);57}58 59int sof_acpi_probe(struct platform_device *pdev, const struct sof_dev_desc *desc)60{61 struct device *dev = &pdev->dev;62 struct snd_sof_pdata *sof_pdata;63 64 dev_dbg(dev, "ACPI DSP detected");65 66 sof_pdata = devm_kzalloc(dev, sizeof(*sof_pdata), GFP_KERNEL);67 if (!sof_pdata)68 return -ENOMEM;69 70 if (!desc->ops) {71 dev_err(dev, "error: no matching ACPI descriptor ops\n");72 return -ENODEV;73 }74 75 sof_pdata->desc = desc;76 sof_pdata->dev = &pdev->dev;77 78 sof_pdata->ipc_file_profile_base.ipc_type = desc->ipc_default;79 sof_pdata->ipc_file_profile_base.fw_path = fw_path;80 sof_pdata->ipc_file_profile_base.tplg_path = tplg_path;81 82 /* set callback to be called on successful device probe to enable runtime_pm */83 sof_pdata->sof_probe_complete = sof_acpi_probe_complete;84 85 /* call sof helper for DSP hardware probe */86 return snd_sof_device_probe(dev, sof_pdata);87}88EXPORT_SYMBOL_NS(sof_acpi_probe, SND_SOC_SOF_ACPI_DEV);89 90void sof_acpi_remove(struct platform_device *pdev)91{92 struct device *dev = &pdev->dev;93 94 if (!(sof_acpi_debug & SOF_ACPI_DISABLE_PM_RUNTIME))95 pm_runtime_disable(dev);96 97 /* call sof helper for DSP hardware remove */98 snd_sof_device_remove(dev);99}100EXPORT_SYMBOL_NS(sof_acpi_remove, SND_SOC_SOF_ACPI_DEV);101 102MODULE_LICENSE("Dual BSD/GPL");103MODULE_DESCRIPTION("SOF support for ACPI platforms");104