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1// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)2//3// Copyright 2019 NXP4//5// Author: Daniel Baluta <daniel.baluta@nxp.com>6//7 8#include <linux/firmware.h>9#include <linux/module.h>10#include <linux/moduleparam.h>11#include <linux/pm_runtime.h>12#include <sound/sof.h>13 14#include "sof-of-dev.h"15#include "ops.h"16 17static char *fw_path;18module_param(fw_path, charp, 0444);19MODULE_PARM_DESC(fw_path, "alternate path for SOF firmware.");20 21static char *tplg_path;22module_param(tplg_path, charp, 0444);23MODULE_PARM_DESC(tplg_path, "alternate path for SOF topology.");24 25const struct dev_pm_ops sof_of_pm = {26 .prepare = snd_sof_prepare,27 .complete = snd_sof_complete,28 SET_SYSTEM_SLEEP_PM_OPS(snd_sof_suspend, snd_sof_resume)29 SET_RUNTIME_PM_OPS(snd_sof_runtime_suspend, snd_sof_runtime_resume,30 NULL)31};32EXPORT_SYMBOL(sof_of_pm);33 34static void sof_of_probe_complete(struct device *dev)35{36 /* allow runtime_pm */37 pm_runtime_set_autosuspend_delay(dev, SND_SOF_SUSPEND_DELAY_MS);38 pm_runtime_use_autosuspend(dev);39 pm_runtime_mark_last_busy(dev);40 pm_runtime_set_active(dev);41 pm_runtime_enable(dev);42}43 44int sof_of_probe(struct platform_device *pdev)45{46 struct device *dev = &pdev->dev;47 const struct sof_dev_desc *desc;48 struct snd_sof_pdata *sof_pdata;49 50 dev_info(&pdev->dev, "DT DSP detected");51 52 sof_pdata = devm_kzalloc(dev, sizeof(*sof_pdata), GFP_KERNEL);53 if (!sof_pdata)54 return -ENOMEM;55 56 desc = device_get_match_data(dev);57 if (!desc)58 return -ENODEV;59 60 if (!desc->ops) {61 dev_err(dev, "error: no matching DT descriptor ops\n");62 return -ENODEV;63 }64 65 sof_pdata->desc = desc;66 sof_pdata->dev = &pdev->dev;67 68 sof_pdata->ipc_file_profile_base.ipc_type = desc->ipc_default;69 sof_pdata->ipc_file_profile_base.fw_path = fw_path;70 sof_pdata->ipc_file_profile_base.tplg_path = tplg_path;71 72 /* set callback to be called on successful device probe to enable runtime_pm */73 sof_pdata->sof_probe_complete = sof_of_probe_complete;74 75 /* call sof helper for DSP hardware probe */76 return snd_sof_device_probe(dev, sof_pdata);77}78EXPORT_SYMBOL(sof_of_probe);79 80void sof_of_remove(struct platform_device *pdev)81{82 pm_runtime_disable(&pdev->dev);83 84 /* call sof helper for DSP hardware remove */85 snd_sof_device_remove(&pdev->dev);86}87EXPORT_SYMBOL(sof_of_remove);88 89void sof_of_shutdown(struct platform_device *pdev)90{91 snd_sof_device_shutdown(&pdev->dev);92}93EXPORT_SYMBOL(sof_of_shutdown);94 95MODULE_LICENSE("Dual BSD/GPL");96MODULE_DESCRIPTION("SOF support for OF/DT platforms");97