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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 /drivers/firmware/raspberrypi.c | |
| parent | drm/bridge: it6505: Fix return value check for pm_runtime_get_sync (diff) | |
| download | linux-bc63897bc33b81897c7f8f5965c8f9326457d082.tar.xz linux-bc63897bc33b81897c7f8f5965c8f9326457d082.zip | |
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>
Diffstat (limited to 'drivers/firmware/raspberrypi.c')
| -rw-r--r-- | drivers/firmware/raspberrypi.c | 18 |
1 files changed, 12 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", |