This externalizes and exports the symbol of_find_spi_device_by_node() from the SPI core akin to how of_find_i2c_adapter_by_node() is already available. As we will need this also for non-dynamic OF setups, we move it under a CONFIG_OF check.
Cc: Mark Brown broonie@kernel.org Cc: linux-spi@vger.kernel.org Signed-off-by: Linus Walleij linus.walleij@linaro.org --- ChangeLog RFC->v1: - No changes - Requesting an ACK from the SPI mainatiner so that this patch can be applied with the rest of the series. --- drivers/spi/spi.c | 33 ++++++++++++++++++--------------- include/linux/spi/spi.h | 4 ++++ 2 files changed, 22 insertions(+), 15 deletions(-)
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index ec395a6baf9c..6a1085077317 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -3314,27 +3314,14 @@ EXPORT_SYMBOL_GPL(spi_write_then_read);
/*-------------------------------------------------------------------------*/
-#if IS_ENABLED(CONFIG_OF_DYNAMIC) -static int __spi_of_device_match(struct device *dev, void *data) -{ - return dev->of_node == data; -} - -/* must call put_device() when done with returned spi_device device */ -static struct spi_device *of_find_spi_device_by_node(struct device_node *node) -{ - struct device *dev = bus_find_device(&spi_bus_type, NULL, node, - __spi_of_device_match); - return dev ? to_spi_device(dev) : NULL; -} - +#if IS_ENABLED(CONFIG_OF) static int __spi_of_controller_match(struct device *dev, const void *data) { return dev->of_node == data; }
/* the spi controllers are not using spi_bus, so we find it with another way */ -static struct spi_controller *of_find_spi_controller_by_node(struct device_node *node) +struct spi_controller *of_find_spi_controller_by_node(struct device_node *node) { struct device *dev;
@@ -3349,6 +3336,22 @@ static struct spi_controller *of_find_spi_controller_by_node(struct device_node /* reference got in class_find_device */ return container_of(dev, struct spi_controller, dev); } +EXPORT_SYMBOL_GPL(of_find_spi_controller_by_node); +#endif + +#if IS_ENABLED(CONFIG_OF_DYNAMIC) +static int __spi_of_device_match(struct device *dev, void *data) +{ + return dev->of_node == data; +} + +/* must call put_device() when done with returned spi_device device */ +static struct spi_device *of_find_spi_device_by_node(struct device_node *node) +{ + struct device *dev = bus_find_device(&spi_bus_type, NULL, node, + __spi_of_device_match); + return dev ? to_spi_device(dev) : NULL; +}
static int of_spi_notify(struct notifier_block *nb, unsigned long action, void *arg) diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h index a64235e05321..c2be93224bd1 100644 --- a/include/linux/spi/spi.h +++ b/include/linux/spi/spi.h @@ -639,6 +639,10 @@ extern int devm_spi_register_controller(struct device *dev, struct spi_controller *ctlr); extern void spi_unregister_controller(struct spi_controller *ctlr);
+#if IS_ENABLED(CONFIG_OF) +struct spi_controller *of_find_spi_controller_by_node(struct device_node *node); +#endif + extern struct spi_controller *spi_busnum_to_master(u16 busnum);
/*