| // 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) |
| |
| const struct dev_pm_ops sof_acpi_pm = { |
| 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_acpi_pm, "SND_SOC_SOF_ACPI_DEV"); |
| |
| 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"); |