Thread (39 messages) 39 messages, 7 authors, 2019-06-04

Re: [PATCH 3/5] soc/fsl/qe: qe.c: introduce qe_get_device_node helper

From: Christophe Leroy <hidden>
Date: 2019-04-30 17:14:16
Also in: linux-arm-kernel, lkml


Le 30/04/2019 à 15:36, Rasmus Villemoes a écrit :
The 'try of_find_compatible_node(NULL, NULL, "fsl,qe"), fall back to
of_find_node_by_type(NULL, "qe")' pattern is repeated five
times. Factor it into a common helper.

Signed-off-by: Rasmus Villemoes <redacted>
Reviewed-by: Christophe Leroy <redacted>

quoted hunk ↗ jump to hunk
---
  drivers/soc/fsl/qe/qe.c | 71 +++++++++++++++++------------------------
  1 file changed, 29 insertions(+), 42 deletions(-)
diff --git a/drivers/soc/fsl/qe/qe.c b/drivers/soc/fsl/qe/qe.c
index d0393f83145c..aff9d1373529 100644
--- a/drivers/soc/fsl/qe/qe.c
+++ b/drivers/soc/fsl/qe/qe.c
@@ -56,6 +56,20 @@ static unsigned int qe_num_of_snum;
  
  static phys_addr_t qebase = -1;
  
+static struct device_node *qe_get_device_node(void)
+{
+	struct device_node *qe;
+
+	/*
+	 * Newer device trees have an "fsl,qe" compatible property for the QE
+	 * node, but we still need to support older device trees.
+	 */
+	qe = of_find_compatible_node(NULL, NULL, "fsl,qe");
+	if (qe)
+		return qe;
+	return of_find_node_by_type(NULL, "qe");
+}
+
  static phys_addr_t get_qe_base(void)
  {
  	struct device_node *qe;
@@ -65,12 +79,9 @@ static phys_addr_t get_qe_base(void)
  	if (qebase != -1)
  		return qebase;
  
-	qe = of_find_compatible_node(NULL, NULL, "fsl,qe");
-	if (!qe) {
-		qe = of_find_node_by_type(NULL, "qe");
-		if (!qe)
-			return qebase;
-	}
+	qe = qe_get_device_node();
+	if (!qe)
+		return qebase;
  
  	ret = of_address_to_resource(qe, 0, &res);
  	if (!ret)
@@ -164,12 +175,9 @@ unsigned int qe_get_brg_clk(void)
  	if (brg_clk)
  		return brg_clk;
  
-	qe = of_find_compatible_node(NULL, NULL, "fsl,qe");
-	if (!qe) {
-		qe = of_find_node_by_type(NULL, "qe");
-		if (!qe)
-			return brg_clk;
-	}
+	qe = qe_get_device_node();
+	if (!qe)
+		return brg_clk;
  
  	prop = of_get_property(qe, "brg-frequency", &size);
  	if (prop && size == sizeof(*prop))
@@ -563,16 +571,9 @@ struct qe_firmware_info *qe_get_firmware_info(void)
  
  	initialized = 1;
  
-	/*
-	 * Newer device trees have an "fsl,qe" compatible property for the QE
-	 * node, but we still need to support older device trees.
-	*/
-	qe = of_find_compatible_node(NULL, NULL, "fsl,qe");
-	if (!qe) {
-		qe = of_find_node_by_type(NULL, "qe");
-		if (!qe)
-			return NULL;
-	}
+	qe = qe_get_device_node();
+	if (!qe)
+		return NULL;
  
  	/* Find the 'firmware' child node */
  	fw = of_get_child_by_name(qe, "firmware");
@@ -618,16 +619,9 @@ unsigned int qe_get_num_of_risc(void)
  	unsigned int num_of_risc = 0;
  	const u32 *prop;
  
-	qe = of_find_compatible_node(NULL, NULL, "fsl,qe");
-	if (!qe) {
-		/* Older devices trees did not have an "fsl,qe"
-		 * compatible property, so we need to look for
-		 * the QE node by name.
-		 */
-		qe = of_find_node_by_type(NULL, "qe");
-		if (!qe)
-			return num_of_risc;
-	}
+	qe = qe_get_device_node();
+	if (!qe)
+		return num_of_risc;
  
  	prop = of_get_property(qe, "fsl,qe-num-riscs", &size);
  	if (prop && size == sizeof(*prop))
@@ -647,16 +641,9 @@ unsigned int qe_get_num_of_snums(void)
  	const u32 *prop;
  
  	num_of_snums = 28; /* The default number of snum for threads is 28 */
-	qe = of_find_compatible_node(NULL, NULL, "fsl,qe");
-	if (!qe) {
-		/* Older devices trees did not have an "fsl,qe"
-		 * compatible property, so we need to look for
-		 * the QE node by name.
-		 */
-		qe = of_find_node_by_type(NULL, "qe");
-		if (!qe)
-			return num_of_snums;
-	}
+	qe = qe_get_device_node();
+	if (!qe)
+		return num_of_snums;
  
  	prop = of_get_property(qe, "fsl,qe-num-snums", &size);
  	if (prop && size == sizeof(*prop)) {
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