From cb0e742bab1f0ebcf81e41048549a5ef80e5f7f3 Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Tue, 19 Oct 2010 07:07:10 +0000 Subject: [PATCH] Revert "[brcm47xx] Add support for cores with slow WDT clock (bcm5354)" This reverts commit 7467fdab387f451082c15d17ce9ae4d91d74b6ca. SVN-Revision: 23533 --- .../900-bcm47xx_wdt-noprescale.patch | 89 ------------------- .../900-bcm47xx_wdt-noprescale.patch | 89 ------------------- .../900-bcm47xx_wdt-noprescale.patch | 89 ------------------- 3 files changed, 267 deletions(-) delete mode 100644 target/linux/brcm47xx/patches-2.6.32/900-bcm47xx_wdt-noprescale.patch delete mode 100644 target/linux/brcm47xx/patches-2.6.34/900-bcm47xx_wdt-noprescale.patch delete mode 100644 target/linux/brcm47xx/patches-2.6.35/900-bcm47xx_wdt-noprescale.patch diff --git a/target/linux/brcm47xx/patches-2.6.32/900-bcm47xx_wdt-noprescale.patch b/target/linux/brcm47xx/patches-2.6.32/900-bcm47xx_wdt-noprescale.patch deleted file mode 100644 index 6bc2b12eb0..0000000000 --- a/target/linux/brcm47xx/patches-2.6.32/900-bcm47xx_wdt-noprescale.patch +++ /dev/null @@ -1,89 +0,0 @@ ---- a/drivers/watchdog/bcm47xx_wdt.c -+++ b/drivers/watchdog/bcm47xx_wdt.c -@@ -31,6 +31,7 @@ - - #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 int nowayout = WATCHDOG_NOWAYOUT; -@@ -50,11 +51,11 @@ 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 */ -- ssb_watchdog_timer_set(&ssb_bcm47xx, 0xfffffff); -+ ssb_watchdog_timer_set(&ssb_bcm47xx, ticks); - } - - static inline int bcm47xx_wdt_hw_stop(void) -@@ -65,33 +66,34 @@ 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 { -- printk(KERN_CRIT DRV_NAME "Watchdog will fire soon!!!\n"); -+ printk(KERN_CRIT DRV_NAME ": 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) -@@ -243,7 +245,15 @@ 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 */ -+ if(ssb_bcm47xx.chip_id == 0x5354) { -+ /* Slow WDT clock, no pre-scaling */ -+ needs_sw_scale = 0; -+ } else { -+ /* Fast WDT clock, needs software pre-scaling */ -+ needs_sw_scale = 1; -+ setup_timer(&wdt_timer, bcm47xx_timer_tick, 0L); -+ } - - if (bcm47xx_wdt_settimeout(wdt_time)) { - bcm47xx_wdt_settimeout(WDT_DEFAULT_TIME); diff --git a/target/linux/brcm47xx/patches-2.6.34/900-bcm47xx_wdt-noprescale.patch b/target/linux/brcm47xx/patches-2.6.34/900-bcm47xx_wdt-noprescale.patch deleted file mode 100644 index 6bc2b12eb0..0000000000 --- a/target/linux/brcm47xx/patches-2.6.34/900-bcm47xx_wdt-noprescale.patch +++ /dev/null @@ -1,89 +0,0 @@ ---- a/drivers/watchdog/bcm47xx_wdt.c -+++ b/drivers/watchdog/bcm47xx_wdt.c -@@ -31,6 +31,7 @@ - - #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 int nowayout = WATCHDOG_NOWAYOUT; -@@ -50,11 +51,11 @@ 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 */ -- ssb_watchdog_timer_set(&ssb_bcm47xx, 0xfffffff); -+ ssb_watchdog_timer_set(&ssb_bcm47xx, ticks); - } - - static inline int bcm47xx_wdt_hw_stop(void) -@@ -65,33 +66,34 @@ 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 { -- printk(KERN_CRIT DRV_NAME "Watchdog will fire soon!!!\n"); -+ printk(KERN_CRIT DRV_NAME ": 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) -@@ -243,7 +245,15 @@ 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 */ -+ if(ssb_bcm47xx.chip_id == 0x5354) { -+ /* Slow WDT clock, no pre-scaling */ -+ needs_sw_scale = 0; -+ } else { -+ /* Fast WDT clock, needs software pre-scaling */ -+ needs_sw_scale = 1; -+ setup_timer(&wdt_timer, bcm47xx_timer_tick, 0L); -+ } - - if (bcm47xx_wdt_settimeout(wdt_time)) { - bcm47xx_wdt_settimeout(WDT_DEFAULT_TIME); diff --git a/target/linux/brcm47xx/patches-2.6.35/900-bcm47xx_wdt-noprescale.patch b/target/linux/brcm47xx/patches-2.6.35/900-bcm47xx_wdt-noprescale.patch deleted file mode 100644 index 6bc2b12eb0..0000000000 --- a/target/linux/brcm47xx/patches-2.6.35/900-bcm47xx_wdt-noprescale.patch +++ /dev/null @@ -1,89 +0,0 @@ ---- a/drivers/watchdog/bcm47xx_wdt.c -+++ b/drivers/watchdog/bcm47xx_wdt.c -@@ -31,6 +31,7 @@ - - #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 int nowayout = WATCHDOG_NOWAYOUT; -@@ -50,11 +51,11 @@ 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 */ -- ssb_watchdog_timer_set(&ssb_bcm47xx, 0xfffffff); -+ ssb_watchdog_timer_set(&ssb_bcm47xx, ticks); - } - - static inline int bcm47xx_wdt_hw_stop(void) -@@ -65,33 +66,34 @@ 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 { -- printk(KERN_CRIT DRV_NAME "Watchdog will fire soon!!!\n"); -+ printk(KERN_CRIT DRV_NAME ": 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) -@@ -243,7 +245,15 @@ 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 */ -+ if(ssb_bcm47xx.chip_id == 0x5354) { -+ /* Slow WDT clock, no pre-scaling */ -+ needs_sw_scale = 0; -+ } else { -+ /* Fast WDT clock, needs software pre-scaling */ -+ needs_sw_scale = 1; -+ setup_timer(&wdt_timer, bcm47xx_timer_tick, 0L); -+ } - - if (bcm47xx_wdt_settimeout(wdt_time)) { - bcm47xx_wdt_settimeout(WDT_DEFAULT_TIME); -- 2.30.2