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ASoC: SOF: Add OF DSP device support
Add support for device tree based SOF DSP devices. Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20190821164730.7385-3-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
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// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) | ||
// | ||
// Copyright 2019 NXP | ||
// | ||
// Author: Daniel Baluta <daniel.baluta@nxp.com> | ||
// | ||
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#include <linux/firmware.h> | ||
#include <linux/module.h> | ||
#include <linux/pm_runtime.h> | ||
#include <sound/sof.h> | ||
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#include "ops.h" | ||
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extern struct snd_sof_dsp_ops sof_imx8_ops; | ||
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/* platform specific devices */ | ||
#if IS_ENABLED(CONFIG_SND_SOC_SOF_IMX8) | ||
static struct sof_dev_desc sof_of_imx8qxp_desc = { | ||
.default_fw_path = "imx/sof", | ||
.default_tplg_path = "imx/sof-tplg", | ||
.nocodec_fw_filename = "sof-imx8.ri", | ||
.nocodec_tplg_filename = "sof-imx8-nocodec.tplg", | ||
.ops = &sof_imx8_ops, | ||
}; | ||
#endif | ||
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static const struct dev_pm_ops sof_of_pm = { | ||
SET_SYSTEM_SLEEP_PM_OPS(snd_sof_suspend, snd_sof_resume) | ||
SET_RUNTIME_PM_OPS(snd_sof_runtime_suspend, snd_sof_runtime_resume, | ||
NULL) | ||
}; | ||
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static void sof_of_probe_complete(struct device *dev) | ||
{ | ||
/* allow runtime_pm */ | ||
pm_runtime_set_autosuspend_delay(dev, SND_SOF_SUSPEND_DELAY_MS); | ||
pm_runtime_use_autosuspend(dev); | ||
pm_runtime_enable(dev); | ||
} | ||
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static int sof_of_probe(struct platform_device *pdev) | ||
{ | ||
struct device *dev = &pdev->dev; | ||
const struct sof_dev_desc *desc; | ||
/*TODO: create a generic snd_soc_xxx_mach */ | ||
struct snd_soc_acpi_mach *mach; | ||
struct snd_sof_pdata *sof_pdata; | ||
const struct snd_sof_dsp_ops *ops; | ||
int ret; | ||
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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); | ||
if (!sof_pdata) | ||
return -ENOMEM; | ||
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desc = device_get_match_data(dev); | ||
if (!desc) | ||
return -ENODEV; | ||
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/* get ops for platform */ | ||
ops = desc->ops; | ||
if (!ops) { | ||
dev_err(dev, "error: no matching DT descriptor ops\n"); | ||
return -ENODEV; | ||
} | ||
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#if IS_ENABLED(CONFIG_SND_SOC_SOF_FORCE_NOCODEC_MODE) | ||
/* force nocodec mode */ | ||
dev_warn(dev, "Force to use nocodec mode\n"); | ||
mach = devm_kzalloc(dev, sizeof(*mach), GFP_KERNEL); | ||
if (!mach) | ||
return -ENOMEM; | ||
ret = sof_nocodec_setup(dev, sof_pdata, mach, desc, ops); | ||
if (ret < 0) | ||
return ret; | ||
#else | ||
/* TODO: implement case where we actually have a codec */ | ||
return -ENODEV; | ||
#endif | ||
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if (mach) | ||
mach->mach_params.platform = dev_name(dev); | ||
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sof_pdata->machine = mach; | ||
sof_pdata->desc = desc; | ||
sof_pdata->dev = &pdev->dev; | ||
sof_pdata->platform = dev_name(dev); | ||
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/* TODO: read alternate fw and tplg filenames from DT */ | ||
sof_pdata->fw_filename_prefix = sof_pdata->desc->default_fw_path; | ||
sof_pdata->tplg_filename_prefix = sof_pdata->desc->default_tplg_path; | ||
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#if IS_ENABLED(CONFIG_SND_SOC_SOF_PROBE_WORK_QUEUE) | ||
/* set callback to enable runtime_pm */ | ||
sof_pdata->sof_probe_complete = sof_of_probe_complete; | ||
#endif | ||
/* call sof helper for DSP hardware probe */ | ||
ret = snd_sof_device_probe(dev, sof_pdata); | ||
if (ret) { | ||
dev_err(dev, "error: failed to probe DSP hardware\n"); | ||
return ret; | ||
} | ||
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#if !IS_ENABLED(CONFIG_SND_SOC_SOF_PROBE_WORK_QUEUE) | ||
sof_of_probe_complete(dev); | ||
#endif | ||
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return ret; | ||
} | ||
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static int sof_of_remove(struct platform_device *pdev) | ||
{ | ||
pm_runtime_disable(&pdev->dev); | ||
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/* call sof helper for DSP hardware remove */ | ||
snd_sof_device_remove(&pdev->dev); | ||
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return 0; | ||
} | ||
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static const struct of_device_id sof_of_ids[] = { | ||
#if IS_ENABLED(CONFIG_SND_SOC_SOF_IMX8) | ||
{ .compatible = "fsl,imx8qxp-dsp", .data = &sof_of_imx8qxp_desc}, | ||
#endif | ||
{ } | ||
}; | ||
MODULE_DEVICE_TABLE(of, sof_of_ids); | ||
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/* DT driver definition */ | ||
static struct platform_driver snd_sof_of_driver = { | ||
.probe = sof_of_probe, | ||
.remove = sof_of_remove, | ||
.driver = { | ||
.name = "sof-audio-of", | ||
.pm = &sof_of_pm, | ||
.of_match_table = sof_of_ids, | ||
}, | ||
}; | ||
module_platform_driver(snd_sof_of_driver); | ||
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MODULE_LICENSE("Dual BSD/GPL"); |