A significant number of RaspberryPi drivers using the firmware don't
have a phandle to it, so end up scanning the device tree to find a node
with the firmware compatible.
That code is duplicated everywhere, so let's introduce a helper instead.
Signed-off-by: Maxime Ripard <maxime@xxxxxxxxxx>
diff --git a/drivers/firmware/raspberrypi.c b/drivers/firmware/raspberrypi.c
index 4b8978b254f9..b916e1e171f8 100644
--- a/drivers/firmware/raspberrypi.c
+++ b/drivers/firmware/raspberrypi.c
@@ -311,6 +311,13 @@ static int rpi_firmware_remove(struct platform_device *pdev)
return 0;
}
+static const struct of_device_id rpi_firmware_of_match[];
+struct device_node *rpi_firmware_find_node(void)
+{
+ return of_find_matching_node(NULL, rpi_firmware_of_match);
+}
+EXPORT_SYMBOL_GPL(rpi_firmware_find_node);
+
/**
* rpi_firmware_get - Get pointer to rpi_firmware structure.
* @firmware_node: Pointer to the firmware Device Tree node.
diff --git a/include/soc/bcm2835/raspberrypi-firmware.h b/include/soc/bcm2835/raspberrypi-firmware.h
index 811ea668c4a1..63426082bcb9 100644
--- a/include/soc/bcm2835/raspberrypi-firmware.h
+++ b/include/soc/bcm2835/raspberrypi-firmware.h
@@ -142,6 +142,7 @@ int rpi_firmware_property(struct rpi_firmware *fw,
int rpi_firmware_property_list(struct rpi_firmware *fw,
void *data, size_t tag_size);
void rpi_firmware_put(struct rpi_firmware *fw);
+struct device_node *rpi_firmware_find_node(void);
struct rpi_firmware *rpi_firmware_get(struct device_node *firmware_node);
struct rpi_firmware *devm_rpi_firmware_get(struct device *dev,
struct device_node *firmware_node);
@@ -159,6 +160,12 @@ static inline int rpi_firmware_property_list(struct rpi_firmware *fw,
}
static inline void rpi_firmware_put(struct rpi_firmware *fw) { }
+
+static inline struct device_node *rpi_firmware_find_node(void)
+{
+ return NULL;
+}
+
static inline struct rpi_firmware *rpi_firmware_get(struct device_node *firmware_node)
{
return NULL;
--
b4 0.10.0
