mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-30 10:39:04 +00:00
85 lines
2.2 KiB
Diff
85 lines
2.2 KiB
Diff
From ab5a0cc750eefdabd58b67c2558c46029ceb2a51 Mon Sep 17 00:00:00 2001
|
|
From: Phil Elwell <phil@raspberrypi.org>
|
|
Date: Sat, 12 May 2018 21:35:43 +0100
|
|
Subject: [PATCH 131/725] firmware/raspberrypi: Notify firmware of a reboot
|
|
|
|
Register for reboot notifications, sending RPI_FIRMWARE_NOTIFY_REBOOT
|
|
over the mailbox interface on reception.
|
|
|
|
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
|
|
---
|
|
drivers/firmware/raspberrypi.c | 40 +++++++++++++++++++++++++++++++++-
|
|
1 file changed, 39 insertions(+), 1 deletion(-)
|
|
|
|
--- a/drivers/firmware/raspberrypi.c
|
|
+++ b/drivers/firmware/raspberrypi.c
|
|
@@ -14,6 +14,7 @@
|
|
#include <linux/module.h>
|
|
#include <linux/of_platform.h>
|
|
#include <linux/platform_device.h>
|
|
+#include <linux/reboot.h>
|
|
#include <soc/bcm2835/raspberrypi-firmware.h>
|
|
|
|
#define MBOX_MSG(chan, data28) (((data28) & ~0xf) | ((chan) & 0xf))
|
|
@@ -174,6 +175,26 @@ int rpi_firmware_property(struct rpi_fir
|
|
}
|
|
EXPORT_SYMBOL_GPL(rpi_firmware_property);
|
|
|
|
+static int rpi_firmware_notify_reboot(struct notifier_block *nb,
|
|
+ unsigned long action,
|
|
+ void *data)
|
|
+{
|
|
+ struct rpi_firmware *fw;
|
|
+ struct platform_device *pdev = g_pdev;
|
|
+
|
|
+ if (!pdev)
|
|
+ return 0;
|
|
+
|
|
+ fw = platform_get_drvdata(pdev);
|
|
+ if (!fw)
|
|
+ return 0;
|
|
+
|
|
+ (void)rpi_firmware_property(fw, RPI_FIRMWARE_NOTIFY_REBOOT,
|
|
+ 0, 0);
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
static void
|
|
rpi_firmware_print_firmware_revision(struct rpi_firmware *fw)
|
|
{
|
|
@@ -284,15 +305,32 @@ static struct platform_driver rpi_firmwa
|
|
.remove = rpi_firmware_remove,
|
|
};
|
|
|
|
+static struct notifier_block rpi_firmware_reboot_notifier = {
|
|
+ .notifier_call = rpi_firmware_notify_reboot,
|
|
+};
|
|
+
|
|
static int __init rpi_firmware_init(void)
|
|
{
|
|
- return platform_driver_register(&rpi_firmware_driver);
|
|
+ int ret = register_reboot_notifier(&rpi_firmware_reboot_notifier);
|
|
+ if (ret)
|
|
+ goto out1;
|
|
+ ret = platform_driver_register(&rpi_firmware_driver);
|
|
+ if (ret)
|
|
+ goto out2;
|
|
+
|
|
+ return 0;
|
|
+
|
|
+out2:
|
|
+ unregister_reboot_notifier(&rpi_firmware_reboot_notifier);
|
|
+out1:
|
|
+ return ret;
|
|
}
|
|
subsys_initcall(rpi_firmware_init);
|
|
|
|
static void __init rpi_firmware_exit(void)
|
|
{
|
|
platform_driver_unregister(&rpi_firmware_driver);
|
|
+ unregister_reboot_notifier(&rpi_firmware_reboot_notifier);
|
|
}
|
|
module_exit(rpi_firmware_exit);
|
|
|