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| author | Maxime Ripard <maxime@cerno.tech> | 2022-10-27 14:52:41 +0200 |
|---|---|---|
| committer | Maxime Ripard <maxime@cerno.tech> | 2022-10-28 13:03:19 +0200 |
| commit | bc63897bc33b81897c7f8f5965c8f9326457d082 (patch) | |
| tree | 7f42620831dfcbaab0ce0a1a6e50f7b16faec11c | |
| parent | 3e4a21a29dd924995f1135cd50e8b7e0d023729c (diff) | |
| download | linux-bc63897bc33b81897c7f8f5965c8f9326457d082.tar.bz2 | |
firmware: raspberrypi: Introduce rpi_firmware_find_node()
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.
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20220815-rpi-fix-4k-60-v5-1-fe9e7ac8b111@cerno.tech
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
| -rw-r--r-- | drivers/firmware/raspberrypi.c | 18 | ||||
| -rw-r--r-- | include/soc/bcm2835/raspberrypi-firmware.h | 7 |
2 files changed, 19 insertions, 6 deletions
diff --git a/drivers/firmware/raspberrypi.c b/drivers/firmware/raspberrypi.c index 4b8978b254f9..932a8bef22fb 100644 --- a/drivers/firmware/raspberrypi.c +++ b/drivers/firmware/raspberrypi.c @@ -311,6 +311,18 @@ static int rpi_firmware_remove(struct platform_device *pdev) return 0; } +static const struct of_device_id rpi_firmware_of_match[] = { + { .compatible = "raspberrypi,bcm2835-firmware", }, + {}, +}; +MODULE_DEVICE_TABLE(of, 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. @@ -366,12 +378,6 @@ struct rpi_firmware *devm_rpi_firmware_get(struct device *dev, } EXPORT_SYMBOL_GPL(devm_rpi_firmware_get); -static const struct of_device_id rpi_firmware_of_match[] = { - { .compatible = "raspberrypi,bcm2835-firmware", }, - {}, -}; -MODULE_DEVICE_TABLE(of, rpi_firmware_of_match); - static struct platform_driver rpi_firmware_driver = { .driver = { .name = "raspberrypi-firmware", 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; |