99 lines
2.4 KiB
C
99 lines
2.4 KiB
C
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// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
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//
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// Copyright 2019 NXP
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//
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// Author: Daniel Baluta <daniel.baluta@nxp.com>
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//
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#include <linux/firmware.h>
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/pm_runtime.h>
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#include <sound/sof.h>
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#include "sof-of-dev.h"
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#include "ops.h"
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static char *fw_path;
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module_param(fw_path, charp, 0444);
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MODULE_PARM_DESC(fw_path, "alternate path for SOF firmware.");
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static char *tplg_path;
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module_param(tplg_path, charp, 0444);
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MODULE_PARM_DESC(tplg_path, "alternate path for SOF topology.");
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const struct dev_pm_ops sof_of_pm = {
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.prepare = snd_sof_prepare,
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.complete = snd_sof_complete,
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SET_SYSTEM_SLEEP_PM_OPS(snd_sof_suspend, snd_sof_resume)
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SET_RUNTIME_PM_OPS(snd_sof_runtime_suspend, snd_sof_runtime_resume,
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NULL)
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};
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EXPORT_SYMBOL(sof_of_pm);
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static void sof_of_probe_complete(struct device *dev)
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{
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/* allow runtime_pm */
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pm_runtime_set_autosuspend_delay(dev, SND_SOF_SUSPEND_DELAY_MS);
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pm_runtime_use_autosuspend(dev);
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pm_runtime_mark_last_busy(dev);
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pm_runtime_set_active(dev);
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pm_runtime_enable(dev);
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}
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int sof_of_probe(struct platform_device *pdev)
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{
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struct device *dev = &pdev->dev;
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const struct sof_dev_desc *desc;
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struct snd_sof_pdata *sof_pdata;
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dev_info(&pdev->dev, "DT DSP detected");
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sof_pdata = devm_kzalloc(dev, sizeof(*sof_pdata), GFP_KERNEL);
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if (!sof_pdata)
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return -ENOMEM;
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desc = device_get_match_data(dev);
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if (!desc)
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return -ENODEV;
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if (!desc->ops) {
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dev_err(dev, "error: no matching DT descriptor ops\n");
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return -ENODEV;
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}
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sof_pdata->desc = desc;
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sof_pdata->dev = &pdev->dev;
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sof_pdata->fw_filename = desc->default_fw_filename;
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if (fw_path)
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sof_pdata->fw_filename_prefix = fw_path;
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else
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sof_pdata->fw_filename_prefix = sof_pdata->desc->default_fw_path;
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if (tplg_path)
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sof_pdata->tplg_filename_prefix = tplg_path;
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else
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sof_pdata->tplg_filename_prefix = sof_pdata->desc->default_tplg_path;
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/* set callback to be called on successful device probe to enable runtime_pm */
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sof_pdata->sof_probe_complete = sof_of_probe_complete;
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/* call sof helper for DSP hardware probe */
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return snd_sof_device_probe(dev, sof_pdata);
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}
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EXPORT_SYMBOL(sof_of_probe);
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int sof_of_remove(struct platform_device *pdev)
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{
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pm_runtime_disable(&pdev->dev);
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/* call sof helper for DSP hardware remove */
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snd_sof_device_remove(&pdev->dev);
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return 0;
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}
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EXPORT_SYMBOL(sof_of_remove);
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MODULE_LICENSE("Dual BSD/GPL");
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