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bcm53xx: backport bcm47xx_wdt changes to 3.18 to use this driver in future 

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>


git-svn-id: svn://svn.openwrt.org/openwrt/trunk@44390 3c298f89-4303-0410-b956-a3cf2f4a3e73
master
Rafał Miłecki 2015-02-11 10:11:00 +00:00
parent 23d7535d49
commit a530948b3a
3 changed files with 116 additions and 0 deletions
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1
target/linux/bcm53xx/config-3.18
View File

@ -52,6 +52,7 @@ CONFIG_B53=y
CONFIG_B53_SRAB_DRIVER=y
CONFIG_BCM47XX_NVRAM=y
CONFIG_BCM47XX_SPROM=y
# CONFIG_BCM47XX_WDT is not set
CONFIG_BCMA=y
CONFIG_BCMA_BLOCKIO=y
CONFIG_BCMA_DEBUG=y

81
target/linux/bcm53xx/patches-3.18/080-watchdog-bcm47xx_wdt.c-add-restart-handler-support.patch Normal file
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@ -0,0 +1,81 @@
From 823769d2e6622a48276bee35b2dad5ba77cbdc25 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
Date: Sun, 25 Jan 2015 11:40:57 +0100
Subject: [PATCH] watchdog: bcm47xx_wdt.c: add restart handler support
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Just like in case of other watchdog drivers, use the new kernel core
API to provide restart support.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
---
drivers/watchdog/bcm47xx_wdt.c | 21 ++++++++++++++++++++-
include/linux/bcm47xx_wdt.h | 1 +
2 files changed, 21 insertions(+), 1 deletion(-)
diff --git a/drivers/watchdog/bcm47xx_wdt.c b/drivers/watchdog/bcm47xx_wdt.c
index 9816485..b28a072 100644
--- a/drivers/watchdog/bcm47xx_wdt.c
+++ b/drivers/watchdog/bcm47xx_wdt.c
@@ -169,6 +169,17 @@ static int bcm47xx_wdt_notify_sys(struct notifier_block *this,
return NOTIFY_DONE;
}
+static int bcm47xx_wdt_restart(struct notifier_block *this, unsigned long mode,
+ void *cmd)
+{
+ struct bcm47xx_wdt *wdt;
+
+ wdt = container_of(this, struct bcm47xx_wdt, restart_handler);
+ wdt->timer_set(wdt, 1);
+
+ return NOTIFY_DONE;
+}
+
static struct watchdog_ops bcm47xx_wdt_soft_ops = {
.owner = THIS_MODULE,
.start = bcm47xx_wdt_soft_start,
@@ -209,15 +220,23 @@ static int bcm47xx_wdt_probe(struct platform_device *pdev)
if (ret)
goto err_timer;
- ret = watchdog_register_device(&wdt->wdd);
+ wdt->restart_handler.notifier_call = &bcm47xx_wdt_restart;
+ wdt->restart_handler.priority = 64;
+ ret = register_restart_handler(&wdt->restart_handler);
if (ret)
goto err_notifier;
+ ret = watchdog_register_device(&wdt->wdd);
+ if (ret)
+ goto err_handler;
+
dev_info(&pdev->dev, "BCM47xx Watchdog Timer enabled (%d seconds%s%s)\n",
timeout, nowayout ? ", nowayout" : "",
soft ? ", Software Timer" : "");
return 0;
+err_handler:
+ unregister_restart_handler(&wdt->restart_handler);
err_notifier:
unregister_reboot_notifier(&wdt->notifier);
err_timer:
diff --git a/include/linux/bcm47xx_wdt.h b/include/linux/bcm47xx_wdt.h
index b708786..5582c21 100644
--- a/include/linux/bcm47xx_wdt.h
+++ b/include/linux/bcm47xx_wdt.h
@@ -16,6 +16,7 @@ struct bcm47xx_wdt {
struct watchdog_device wdd;
struct notifier_block notifier;
+ struct notifier_block restart_handler;
struct timer_list soft_timer;
atomic_t soft_ticks;
--
1.8.4.5

34
target/linux/bcm53xx/patches-3.18/081-watchdog-bcm47xx_wdt.c-allow-enabling-on-BCM5301X-ar.patch Normal file
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@ -0,0 +1,34 @@
From b08c144e3a1089cdb725e393fa4f68f83a73e31b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
Date: Sat, 7 Feb 2015 18:04:10 +0100
Subject: [PATCH] watchdog: bcm47xx_wdt.c: allow enabling on BCM5301X arch
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
BCM5301X (ARCH_BCM_5301X) is a new Broadcom architecture using the same
SoC bus driver (bcma) as BCM47XX but based on ARM instead of MIPS.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
---
drivers/watchdog/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index 2aaef7b..ca6c949 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -1113,7 +1113,7 @@ config ATH79_WDT
config BCM47XX_WDT
tristate "Broadcom BCM47xx Watchdog Timer"
- depends on BCM47XX
+ depends on BCM47XX || ARCH_BCM_5301X
select WATCHDOG_CORE
help
Hardware driver for the Broadcom BCM47xx Watchdog Timer.
--
1.8.4.5