[PATCH 03/11] remoteproc: stm32: Decouple rproc from DT parsing

[Mathieu Poirier <mathieu.poirier@xxxxxxxxxx>]

Remove the remote processor from the process of parsing the device tree
since (1) there is no correlation between them and (2) to use the
information that was gathered to make a decision on whether to
synchronise with the MCU or not.

Signed-off-by: Mathieu Poirier <mathieu.poirier@xxxxxxxxxx>
---
 drivers/remoteproc/stm32_rproc.c | 38 +++++++++++++++++++++-----------
 1 file changed, 25 insertions(+), 13 deletions(-)

diff --git a/drivers/remoteproc/stm32_rproc.c b/drivers/remoteproc/stm32_rproc.c
index 0c1f0b84e057..ca60c917e218 100644
--- a/drivers/remoteproc/stm32_rproc.c
+++ b/drivers/remoteproc/stm32_rproc.c
@@ -538,12 +538,11 @@ static int stm32_rproc_get_syscon(struct device_node *np, const char *prop,
 	return err;
 }
 
-static int stm32_rproc_parse_dt(struct platform_device *pdev)
+static int stm32_rproc_parse_dt(struct platform_device *pdev,
+				struct stm32_rproc *ddata, bool *auto_boot)
 {
 	struct device *dev = &pdev->dev;
 	struct device_node *np = dev->of_node;
-	struct rproc *rproc = platform_get_drvdata(pdev);
-	struct stm32_rproc *ddata = rproc->priv;
 	struct stm32_syscon tz;
 	unsigned int tzen;
 	int err, irq;
@@ -589,7 +588,7 @@ static int stm32_rproc_parse_dt(struct platform_device *pdev)
 
 	err = regmap_read(tz.map, tz.reg, &tzen);
 	if (err) {
-		dev_err(&rproc->dev, "failed to read tzen\n");
+		dev_err(dev, "failed to read tzen\n");
 		return err;
 	}
 	ddata->secured_soc = tzen & tz.mask;
@@ -605,7 +604,7 @@ static int stm32_rproc_parse_dt(struct platform_device *pdev)
 	if (err)
 		dev_warn(dev, "failed to get pdds\n");
 
-	rproc->auto_boot = of_property_read_bool(np, "st,auto-boot");
+	*auto_boot = of_property_read_bool(np, "st,auto-boot");
 
 	return stm32_rproc_of_memory_translations(pdev, ddata);
 }
@@ -616,18 +615,29 @@ static int stm32_rproc_probe(struct platform_device *pdev)
 	struct stm32_rproc *ddata;
 	struct device_node *np = dev->of_node;
 	struct rproc *rproc;
+	bool auto_boot = false;
 	int ret;
 
 	ret = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(32));
 	if (ret)
 		return ret;
 
-	rproc = rproc_alloc(dev, np->name, &st_rproc_ops, NULL, sizeof(*ddata));
-	if (!rproc)
+	ddata = kzalloc(sizeof(*ddata), GFP_KERNEL);
+	if (!ddata)
 		return -ENOMEM;
 
+	ret = stm32_rproc_parse_dt(pdev, ddata, &auto_boot);
+	if (ret)
+		goto free_ddata;
+
+	rproc = rproc_alloc(dev, np->name, &st_rproc_ops, NULL, sizeof(*ddata));
+	if (!rproc) {
+		ret = -ENOMEM;
+		goto free_ddata;
+	}
+
+	rproc->auto_boot = auto_boot;
 	rproc->has_iommu = false;
-	ddata = rproc->priv;
 	ddata->workqueue = create_workqueue(dev_name(dev));
 	if (!ddata->workqueue) {
 		dev_err(dev, "cannot create workqueue\n");
@@ -635,20 +645,20 @@ static int stm32_rproc_probe(struct platform_device *pdev)
 		goto free_rproc;
 	}
 
-	platform_set_drvdata(pdev, rproc);
+	memcpy(rproc->priv, ddata, sizeof(*ddata));
 
-	ret = stm32_rproc_parse_dt(pdev);
-	if (ret)
-		goto free_wkq;
+	platform_set_drvdata(pdev, rproc);
 
 	ret = stm32_rproc_request_mbox(rproc);
 	if (ret)
-		goto free_rproc;
+		goto free_wkq;
 
 	ret = rproc_add(rproc);
 	if (ret)
 		goto free_mb;
 
+	kfree(ddata);
+
 	return 0;
 
 free_mb:
@@ -661,6 +671,8 @@ static int stm32_rproc_probe(struct platform_device *pdev)
 		device_init_wakeup(dev, false);
 	}
 	rproc_free(rproc);
+free_ddata:
+	kfree(ddata);
 	return ret;
 }
 
-- 
2.20.1