[RFC 5/5] bluetooth: hci_mrvl: allow waiting for firmware load using notify-device
From: Matthias Schiffer <hidden>
Date: 2022-10-26 13:17:08
Also in:
linux-devicetree, linux-wireless, lkml, netdev
Subsystem:
bluetooth drivers, the rest · Maintainers:
Marcel Holtmann, Luiz Augusto von Dentz, Linus Torvalds
Signed-off-by: Matthias Schiffer <redacted> --- drivers/bluetooth/hci_mrvl.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+)
diff --git a/drivers/bluetooth/hci_mrvl.c b/drivers/bluetooth/hci_mrvl.c
index b7d764e6010f..dc55053574a9 100644
--- a/drivers/bluetooth/hci_mrvl.c
+++ b/drivers/bluetooth/hci_mrvl.c@@ -12,6 +12,7 @@ #include <linux/skbuff.h> #include <linux/firmware.h> #include <linux/module.h> +#include <linux/notify-device.h> #include <linux/tty.h> #include <linux/of.h> #include <linux/of_device.h>
@@ -433,9 +434,25 @@ static int mrvl_serdev_probe(struct serdev_device *serdev) return -ENOMEM; if (IS_ENABLED(CONFIG_OF)) { + struct device_node *firmware_ready_node; + struct device *firmware_ready; + mrvldev->info = of_device_get_match_data(&serdev->dev); if (!mrvldev->info) return -ENODEV; + + firmware_ready_node = of_parse_phandle(serdev->dev.of_node, + "firmware-ready", 0); + if (firmware_ready_node) { + firmware_ready = + notify_device_find_by_of_node(firmware_ready_node); + if (!firmware_ready) + return -EPROBE_DEFER; + if (IS_ERR(firmware_ready)) + return PTR_ERR(firmware_ready); + put_device(firmware_ready); + } + } mrvldev->hu.serdev = serdev;
--
2.25.1