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author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-01-17 20:15:38 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-01-17 20:15:38 (GMT) |
commit | 6606b342febfd470b4a33acb73e360eeaca1d9bb (patch) | |
tree | 2414cc2ca582aa34be6e6ed5c830658fbf21db41 /drivers/watchdog/imx2_wdt.c | |
parent | a016af2e70bfca23f2f5de7d8708157b86ea374d (diff) | |
parent | ac36856fe4321454b6789c019c96c3ec854094ed (diff) | |
download | linux-6606b342febfd470b4a33acb73e360eeaca1d9bb.tar.xz |
Merge git://www.linux-watchdog.org/linux-watchdog
Pull watchdog updates from Wim Van Sebroeck:
"This adds following items:
- watchdog restart handler support
- watchdog reboot notifier support
- watchdog sysfs attributes
- support for the following new devices: AMD Mullins platform, AMD
Carrizo platform, meson8b SoC, CSRatlas7, TS-4800, Alphascale
asm9260-wdt, Zodiac, Sigma Designs SMP86xx/SMP87xx
- Changes in refcounting for the watchdog core
- watchdog core improvements
- and small fixes"
* git://www.linux-watchdog.org/linux-watchdog: (60 commits)
watchdog: asm9260: remove __init and __exit annotations
watchdog: Drop pointer to watchdog device from struct watchdog_device
watchdog: ziirave: Use watchdog infrastructure to create sysfs attributes
watchdog: Add support for creating driver specific sysfs attributes
watchdog: kill unref/ref ops
watchdog: stmp3xxx: Remove unused variables
watchdog: add MT7621 watchdog support
hwmon: (sch56xx) Drop watchdog driver data reference count callbacks
watchdog: da9055_wdt: Drop reference counting
watchdog: da9052_wdt: Drop reference counting
watchdog: Separate and maintain variables based on variable lifetime
watchdog: diag288: Stop re-using watchdog core internal flags
watchdog: Create watchdog device in watchdog_dev.c
watchdog: qcom-wdt: Do not set 'dev' in struct watchdog_device
watchdog: mena21: Do not use device pointer from struct watchdog_device
watchdog: gpio: Do not use device pointer from struct watchdog_device
watchdog: tangox: Print info message using pointer to platform device
watchdog: bcm2835_wdt: Drop log message if watchdog is stopped
devicetree: watchdog: add binding for Sigma Designs SMP8642 watchdog
watchdog: add support for Sigma Designs SMP86xx/SMP87xx
...
Diffstat (limited to 'drivers/watchdog/imx2_wdt.c')
-rw-r--r-- | drivers/watchdog/imx2_wdt.c | 23 |
1 files changed, 6 insertions, 17 deletions
diff --git a/drivers/watchdog/imx2_wdt.c b/drivers/watchdog/imx2_wdt.c index 29ef719..e47966a 100644 --- a/drivers/watchdog/imx2_wdt.c +++ b/drivers/watchdog/imx2_wdt.c @@ -29,10 +29,8 @@ #include <linux/kernel.h> #include <linux/module.h> #include <linux/moduleparam.h> -#include <linux/notifier.h> #include <linux/of_address.h> #include <linux/platform_device.h> -#include <linux/reboot.h> #include <linux/regmap.h> #include <linux/timer.h> #include <linux/watchdog.h> @@ -64,7 +62,6 @@ struct imx2_wdt_device { struct regmap *regmap; struct timer_list timer; /* Pings the watchdog when closed */ struct watchdog_device wdog; - struct notifier_block restart_handler; }; static bool nowayout = WATCHDOG_NOWAYOUT; @@ -83,13 +80,11 @@ static const struct watchdog_info imx2_wdt_info = { .options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE, }; -static int imx2_restart_handler(struct notifier_block *this, unsigned long mode, - void *cmd) +static int imx2_wdt_restart(struct watchdog_device *wdog) { + struct imx2_wdt_device *wdev = watchdog_get_drvdata(wdog); unsigned int wcr_enable = IMX2_WDT_WCR_WDE; - struct imx2_wdt_device *wdev = container_of(this, - struct imx2_wdt_device, - restart_handler); + /* Assert SRS signal */ regmap_write(wdev->regmap, IMX2_WDT_WCR, wcr_enable); /* @@ -105,7 +100,7 @@ static int imx2_restart_handler(struct notifier_block *this, unsigned long mode, /* wait for reset to assert... */ mdelay(500); - return NOTIFY_DONE; + return 0; } static inline void imx2_wdt_setup(struct watchdog_device *wdog) @@ -213,6 +208,7 @@ static const struct watchdog_ops imx2_wdt_ops = { .stop = imx2_wdt_stop, .ping = imx2_wdt_ping, .set_timeout = imx2_wdt_set_timeout, + .restart = imx2_wdt_restart, }; static const struct regmap_config imx2_wdt_regmap_config = { @@ -275,6 +271,7 @@ static int __init imx2_wdt_probe(struct platform_device *pdev) platform_set_drvdata(pdev, wdog); watchdog_set_drvdata(wdog, wdev); watchdog_set_nowayout(wdog, nowayout); + watchdog_set_restart_priority(wdog, 128); watchdog_init_timeout(wdog, timeout, &pdev->dev); setup_timer(&wdev->timer, imx2_wdt_timer_ping, (unsigned long)wdog); @@ -294,12 +291,6 @@ static int __init imx2_wdt_probe(struct platform_device *pdev) goto disable_clk; } - wdev->restart_handler.notifier_call = imx2_restart_handler; - wdev->restart_handler.priority = 128; - ret = register_restart_handler(&wdev->restart_handler); - if (ret) - dev_err(&pdev->dev, "cannot register restart handler\n"); - dev_info(&pdev->dev, "timeout %d sec (nowayout=%d)\n", wdog->timeout, nowayout); @@ -315,8 +306,6 @@ static int __exit imx2_wdt_remove(struct platform_device *pdev) struct watchdog_device *wdog = platform_get_drvdata(pdev); struct imx2_wdt_device *wdev = watchdog_get_drvdata(wdog); - unregister_restart_handler(&wdev->restart_handler); - watchdog_unregister_device(wdog); if (imx2_wdt_is_running(wdev)) { |