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Message-Id: <20220815-rpi-fix-4k-60-v3-1-fc56729d11fe@cerno.tech>
Date: Thu, 13 Oct 2022 11:13:08 +0200
From: Maxime Ripard <maxime@...no.tech>
To: Florian Fainelli <f.fainelli@...il.com>,
Michael Turquette <mturquette@...libre.com>,
Emma Anholt <emma@...olt.net>, Stephen Boyd <sboyd@...nel.org>,
Ray Jui <rjui@...adcom.com>,
Scott Branden <sbranden@...adcom.com>,
Broadcom internal kernel review list
<bcm-kernel-feedback-list@...adcom.com>,
Daniel Vetter <daniel@...ll.ch>,
David Airlie <airlied@...ux.ie>,
Maxime Ripard <mripard@...nel.org>
Cc: linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
Maxime Ripard <maxime@...no.tech>,
Stefan Wahren <stefan.wahren@...e.com>,
linux-clk@...r.kernel.org, linux-rpi-kernel@...ts.infradead.org,
Dom Cobley <popcornmix@...il.com>,
dri-devel@...ts.freedesktop.org
Subject: [PATCH v3 1/7] 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.
Signed-off-by: Maxime Ripard <maxime@...no.tech>
---
drivers/firmware/raspberrypi.c | 7 +++++++
include/soc/bcm2835/raspberrypi-firmware.h | 7 +++++++
2 files changed, 14 insertions(+)
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 0.11.0-dev-7da52
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