diff options
author | hauke <hauke@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2012-11-24 20:07:25 +0000 |
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committer | hauke <hauke@3c298f89-4303-0410-b956-a3cf2f4a3e73> | 2012-11-24 20:07:25 +0000 |
commit | 9a462204d13bd8acd735f8111dc7f9412e812b33 (patch) | |
tree | 90fc287e9ed841c2ec2972694366a16375b511fd /target/linux/brcm47xx/patches-3.6/900-bcm47xx_wdt-noprescale.patch | |
parent | 0b36fa881c11ebe7deae587bd6cae851d70f7477 (diff) |
brcm47xx: update watchdog driver
This watchdog driver should work with SoC having a PMU.
This fixes #11720.
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@34323 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/brcm47xx/patches-3.6/900-bcm47xx_wdt-noprescale.patch')
-rw-r--r-- | target/linux/brcm47xx/patches-3.6/900-bcm47xx_wdt-noprescale.patch | 103 |
1 files changed, 0 insertions, 103 deletions
diff --git a/target/linux/brcm47xx/patches-3.6/900-bcm47xx_wdt-noprescale.patch b/target/linux/brcm47xx/patches-3.6/900-bcm47xx_wdt-noprescale.patch deleted file mode 100644 index bf0a19268..000000000 --- a/target/linux/brcm47xx/patches-3.6/900-bcm47xx_wdt-noprescale.patch +++ /dev/null @@ -1,103 +0,0 @@ ---- a/drivers/watchdog/bcm47xx_wdt.c -+++ b/drivers/watchdog/bcm47xx_wdt.c -@@ -33,6 +33,7 @@ - - #define WDT_DEFAULT_TIME 30 /* seconds */ - #define WDT_MAX_TIME 255 /* seconds */ -+#define WDT_SHIFT 15 /* 32.768 KHz on cores with slow WDT clock */ - - static int wdt_time = WDT_DEFAULT_TIME; - static bool nowayout = WATCHDOG_NOWAYOUT; -@@ -52,20 +53,20 @@ static unsigned long bcm47xx_wdt_busy; - static char expect_release; - static struct timer_list wdt_timer; - static atomic_t ticks; -+static int needs_sw_scale; - --static inline void bcm47xx_wdt_hw_start(void) -+static inline void bcm47xx_wdt_hw_start(u32 ticks) - { -- /* this is 2,5s on 100Mhz clock and 2s on 133 Mhz */ - switch (bcm47xx_bus_type) { - #ifdef CONFIG_BCM47XX_SSB - case BCM47XX_BUS_TYPE_SSB: -- ssb_watchdog_timer_set(&bcm47xx_bus.ssb, 0xfffffff); -+ ssb_watchdog_timer_set(&bcm47xx_bus.ssb, ticks); - break; - #endif - #ifdef CONFIG_BCM47XX_BCMA - case BCM47XX_BUS_TYPE_BCMA: - bcma_chipco_watchdog_timer_set(&bcm47xx_bus.bcma.bus.drv_cc, -- 0xfffffff); -+ ticks); - break; - #endif - } -@@ -90,33 +91,34 @@ static inline int bcm47xx_wdt_hw_stop(vo - static void bcm47xx_timer_tick(unsigned long unused) - { - if (!atomic_dec_and_test(&ticks)) { -- bcm47xx_wdt_hw_start(); -+ /* This is 2,5s on 100Mhz clock and 2s on 133 Mhz */ -+ bcm47xx_wdt_hw_start(0xfffffff); - mod_timer(&wdt_timer, jiffies + HZ); - } else { - pr_crit("Watchdog will fire soon!!!\n"); - } - } - --static inline void bcm47xx_wdt_pet(void) -+static void bcm47xx_wdt_pet(void) - { -- atomic_set(&ticks, wdt_time); -+ if(needs_sw_scale) -+ atomic_set(&ticks, wdt_time); -+ else -+ bcm47xx_wdt_hw_start(wdt_time << WDT_SHIFT); - } - - static void bcm47xx_wdt_start(void) - { - bcm47xx_wdt_pet(); -- bcm47xx_timer_tick(0); --} -- --static void bcm47xx_wdt_pause(void) --{ -- del_timer_sync(&wdt_timer); -- bcm47xx_wdt_hw_stop(); -+ if(needs_sw_scale) -+ bcm47xx_timer_tick(0); - } - - static void bcm47xx_wdt_stop(void) - { -- bcm47xx_wdt_pause(); -+ if(needs_sw_scale) -+ del_timer_sync(&wdt_timer); -+ bcm47xx_wdt_hw_stop(); - } - - static int bcm47xx_wdt_settimeout(int new_time) -@@ -267,7 +269,20 @@ static int __init bcm47xx_wdt_init(void) - if (bcm47xx_wdt_hw_stop() < 0) - return -ENODEV; - -- setup_timer(&wdt_timer, bcm47xx_timer_tick, 0L); -+ /* FIXME Other cores */ -+#ifdef BCM47XX_BUS_TYPE_BCMA -+ if(bcm47xx_bus_type == BCM47XX_BUS_TYPE_BCMA && -+ bcm47xx_bus.ssb.chip_id == 0x5354) { -+ /* Slow WDT clock, no pre-scaling */ -+ needs_sw_scale = 0; -+ } else { -+#endif -+ /* Fast WDT clock, needs software pre-scaling */ -+ needs_sw_scale = 1; -+ setup_timer(&wdt_timer, bcm47xx_timer_tick, 0L); -+#ifdef BCM47XX_BUS_TYPE_BCMA -+ } -+#endif - - if (bcm47xx_wdt_settimeout(wdt_time)) { - bcm47xx_wdt_settimeout(WDT_DEFAULT_TIME); |