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Subject[PATCH 1/3] ASoC: SOF: Parse fw/tplg filename from DT
Date
From: Daniel Baluta <daniel.baluta@nxp.com>

Introduce two DT properties in dsp node:
* fw-filename, optional property giving the firmware filename
(if this is missing fw filename is read from board description)
* tplg-filename, mandatory giving the topology filename.

Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
---
sound/soc/sof/sof-of-dev.c | 29 +++++++++++++++++++++++++++++
1 file changed, 29 insertions(+)

diff --git a/sound/soc/sof/sof-of-dev.c b/sound/soc/sof/sof-of-dev.c
index d1a21edfa05d..770935191823 100644
--- a/sound/soc/sof/sof-of-dev.c
+++ b/sound/soc/sof/sof-of-dev.c
@@ -65,11 +65,28 @@ static void sof_of_probe_complete(struct device *dev)
pm_runtime_put_autosuspend(dev);
}

+int sof_of_parse(struct platform_device *pdev)
+{
+ struct snd_sof_pdata *sof_pdata = platform_get_drvdata(pdev);
+ struct device_node *np = pdev->dev.of_node;
+ int ret;
+
+ /* firmware-name is optional in DT */
+ of_property_read_string(np, "firmware-name", &sof_pdata->fw_filename);
+
+ ret = of_property_read_string(np, "tplg-name", &sof_pdata->tplg_filename);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
static int sof_of_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
const struct sof_dev_desc *desc;
struct snd_sof_pdata *sof_pdata;
+ int ret;

dev_info(&pdev->dev, "DT DSP detected");

@@ -77,6 +94,8 @@ static int sof_of_probe(struct platform_device *pdev)
if (!sof_pdata)
return -ENOMEM;

+ platform_set_drvdata(pdev, sof_pdata);
+
desc = device_get_match_data(dev);
if (!desc)
return -ENODEV;
@@ -94,6 +113,16 @@ static int sof_of_probe(struct platform_device *pdev)
sof_pdata->fw_filename_prefix = sof_pdata->desc->default_fw_path;
sof_pdata->tplg_filename_prefix = sof_pdata->desc->default_tplg_path;

+ ret = sof_of_parse(pdev);
+ if (ret < 0) {
+ dev_err(dev, "Could not parse SOF OF DSP node\n");
+ return ret;
+ }
+
+ /* use default fw filename if none provided in DT */
+ if (!sof_pdata->fw_filename)
+ sof_pdata->fw_filename = desc->default_fw_filename;
+
/* set callback to be called on successful device probe to enable runtime_pm */
sof_pdata->sof_probe_complete = sof_of_probe_complete;

--
2.27.0
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