[PATCH v2 3/6] soc/fsl/qe: qe.c: introduce qe_get_device_node helper

From: Rasmus Villemoes
Date: Wed May 01 2019 - 05:29:33 EST


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.

Reviewed-by: Christophe Leroy <christophe.leroy@xxxxxx>
Signed-off-by: Rasmus Villemoes <rasmus.villemoes@xxxxxxxxx>
---
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 303aa29cb27d..0fb8b59f61ad 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))
@@ -557,16 +565,9 @@ 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");
@@ -612,16 +613,9 @@ 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))
@@ -641,16 +635,9 @@ 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)) {
--
2.20.1