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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103// 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//// Author: Liam Girdwood <liam.r.girdwood@linux.intel.com>//
#include <linux/acpi.h>#include <linux/firmware.h>#include <linux/module.h>#include <linux/pm_runtime.h>#include <sound/soc-acpi.h>#include <sound/soc-acpi-intel-match.h>#include <sound/sof.h>#include "../intel/common/soc-intel-quirks.h"#include "ops.h"#include "sof-acpi-dev.h"
/* platform specific devices */#include "intel/shim.h"
static char *fw_path;module_param(fw_path, charp, 0444);MODULE_PARM_DESC(fw_path, "deprecated - moved to snd-sof module.");
static char *tplg_path;module_param(tplg_path, charp, 0444);MODULE_PARM_DESC(tplg_path, "deprecated - moved to snd-sof module.");
static int sof_acpi_debug;module_param_named(sof_acpi_debug, sof_acpi_debug, int, 0444);MODULE_PARM_DESC(sof_acpi_debug, "SOF ACPI debug options (0x0 all off)");
#define SOF_ACPI_DISABLE_PM_RUNTIME BIT(0)
EXPORT_NS_DEV_PM_OPS(sof_acpi_pm, SND_SOC_SOF_ACPI_DEV) = { SYSTEM_SLEEP_PM_OPS(snd_sof_suspend, snd_sof_resume) RUNTIME_PM_OPS(snd_sof_runtime_suspend, snd_sof_runtime_resume, snd_sof_runtime_idle)};
static void sof_acpi_probe_complete(struct device *dev){ dev_dbg(dev, "Completing SOF ACPI probe");
if (sof_acpi_debug & SOF_ACPI_DISABLE_PM_RUNTIME) return;
/* allow runtime_pm */ pm_runtime_set_autosuspend_delay(dev, SND_SOF_SUSPEND_DELAY_MS); pm_runtime_use_autosuspend(dev); pm_runtime_enable(dev);}
int sof_acpi_probe(struct platform_device *pdev, const struct sof_dev_desc *desc){ struct device *dev = &pdev->dev; struct snd_sof_pdata *sof_pdata;
dev_dbg(dev, "ACPI DSP detected");
sof_pdata = devm_kzalloc(dev, sizeof(*sof_pdata), GFP_KERNEL); if (!sof_pdata) return -ENOMEM;
if (!desc->ops) { dev_err(dev, "error: no matching ACPI descriptor ops\n"); return -ENODEV; }
sof_pdata->desc = desc; sof_pdata->dev = &pdev->dev;
sof_pdata->ipc_file_profile_base.ipc_type = desc->ipc_default; sof_pdata->ipc_file_profile_base.fw_path = fw_path; sof_pdata->ipc_file_profile_base.tplg_path = tplg_path;
/* set callback to be called on successful device probe to enable runtime_pm */ sof_pdata->sof_probe_complete = sof_acpi_probe_complete;
/* call sof helper for DSP hardware probe */ return snd_sof_device_probe(dev, sof_pdata);}EXPORT_SYMBOL_NS(sof_acpi_probe, "SND_SOC_SOF_ACPI_DEV");
void sof_acpi_remove(struct platform_device *pdev){ struct device *dev = &pdev->dev;
if (!(sof_acpi_debug & SOF_ACPI_DISABLE_PM_RUNTIME)) pm_runtime_disable(dev);
/* call sof helper for DSP hardware remove */ snd_sof_device_remove(dev);}EXPORT_SYMBOL_NS(sof_acpi_remove, "SND_SOC_SOF_ACPI_DEV");
MODULE_LICENSE("Dual BSD/GPL");MODULE_DESCRIPTION("SOF support for ACPI platforms");