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-rw-r--r--target/linux/brcm47xx/patches-3.6/551-ssb-add-methods-for-watchdog-driver.patch131
1 files changed, 131 insertions, 0 deletions
diff --git a/target/linux/brcm47xx/patches-3.6/551-ssb-add-methods-for-watchdog-driver.patch b/target/linux/brcm47xx/patches-3.6/551-ssb-add-methods-for-watchdog-driver.patch
new file mode 100644
index 0000000000..46911d1306
--- /dev/null
+++ b/target/linux/brcm47xx/patches-3.6/551-ssb-add-methods-for-watchdog-driver.patch
@@ -0,0 +1,131 @@
+--- a/drivers/ssb/driver_chipcommon.c
++++ b/drivers/ssb/driver_chipcommon.c
+@@ -4,6 +4,7 @@
+ *
+ * Copyright 2005, Broadcom Corporation
+ * Copyright 2006, 2007, Michael Buesch <m@bues.ch>
++ * Copyright 2012, Hauke Mehrtens <hauke@hauke-m.de>
+ *
+ * Licensed under the GNU/GPL. See COPYING for details.
+ */
+@@ -12,6 +13,7 @@
+ #include <linux/ssb/ssb_regs.h>
+ #include <linux/export.h>
+ #include <linux/pci.h>
++#include <linux/bcm47xx_wdt.h>
+
+ #include "ssb_private.h"
+
+@@ -306,6 +308,43 @@ static u32 ssb_chipco_watchdog_get_max_t
+ return (1 << nb) - 1;
+ }
+
++u32 ssb_chipco_watchdog_timer_set_wdt(struct bcm47xx_wdt *wdt, u32 ticks)
++{
++ struct ssb_chipcommon *cc = bcm47xx_wdt_get_drvdata(wdt);
++
++ if (cc->dev->bus->bustype != SSB_BUSTYPE_SSB)
++ return 0;
++
++ return ssb_chipco_watchdog_timer_set(cc, ticks);
++}
++
++u32 ssb_chipco_watchdog_timer_set_ms(struct bcm47xx_wdt *wdt, u32 ms)
++{
++ struct ssb_chipcommon *cc = bcm47xx_wdt_get_drvdata(wdt);
++ u32 ticks;
++
++ if (cc->dev->bus->bustype != SSB_BUSTYPE_SSB)
++ return 0;
++
++ ticks = ssb_chipco_watchdog_timer_set(cc, cc->ticks_per_ms * ms);
++ return ticks / cc->ticks_per_ms;
++}
++
++static int ssb_chipco_watchdog_ticks_per_ms(struct ssb_chipcommon *cc)
++{
++ struct ssb_bus *bus = cc->dev->bus;
++
++ if (cc->capabilities & SSB_CHIPCO_CAP_PMU) {
++ /* based on 32KHz ILP clock */
++ return 32;
++ } else {
++ if (cc->dev->id.revision < 18)
++ return ssb_clockspeed(bus) / 1000;
++ else
++ return ssb_chipco_alp_clock(cc) / 1000;
++ }
++}
++
+ void ssb_chipcommon_init(struct ssb_chipcommon *cc)
+ {
+ if (!cc->dev)
+@@ -323,6 +362,11 @@ void ssb_chipcommon_init(struct ssb_chip
+ chipco_powercontrol_init(cc);
+ ssb_chipco_set_clockmode(cc, SSB_CLKMODE_FAST);
+ calc_fast_powerup_delay(cc);
++
++ if (cc->dev->bus->bustype == SSB_BUSTYPE_SSB) {
++ cc->ticks_per_ms = ssb_chipco_watchdog_ticks_per_ms(cc);
++ cc->max_timer_ms = ssb_chipco_watchdog_get_max_timer(cc) / cc->ticks_per_ms;
++ }
+ }
+
+ void ssb_chipco_suspend(struct ssb_chipcommon *cc)
+@@ -421,7 +465,7 @@ void ssb_chipco_timing_init(struct ssb_c
+ }
+
+ /* Set chip watchdog reset timer to fire in 'ticks' backplane cycles */
+-void ssb_chipco_watchdog_timer_set(struct ssb_chipcommon *cc, u32 ticks)
++u32 ssb_chipco_watchdog_timer_set(struct ssb_chipcommon *cc, u32 ticks)
+ {
+ u32 maxt;
+ enum ssb_clkmode clkmode;
+@@ -441,6 +485,7 @@ void ssb_chipco_watchdog_timer_set(struc
+ /* instant NMI */
+ chipco_write32(cc, SSB_CHIPCO_WATCHDOG, ticks);
+ }
++ return ticks;
+ }
+
+ void ssb_chipco_irq_mask(struct ssb_chipcommon *cc, u32 mask, u32 value)
+--- a/drivers/ssb/ssb_private.h
++++ b/drivers/ssb/ssb_private.h
+@@ -3,6 +3,7 @@
+
+ #include <linux/ssb/ssb.h>
+ #include <linux/types.h>
++#include <linux/bcm47xx_wdt.h>
+
+
+ #define PFX "ssb: "
+@@ -226,4 +227,8 @@ static inline int ssb_sflash_init(struct
+
+ extern struct platform_device ssb_pflash_dev;
+
++extern u32 ssb_chipco_watchdog_timer_set_wdt(struct bcm47xx_wdt *wdt,
++ u32 ticks);
++extern u32 ssb_chipco_watchdog_timer_set_ms(struct bcm47xx_wdt *wdt, u32 ms);
++
+ #endif /* LINUX_SSB_PRIVATE_H_ */
+--- a/include/linux/ssb/ssb_driver_chipcommon.h
++++ b/include/linux/ssb/ssb_driver_chipcommon.h
+@@ -607,6 +607,8 @@ struct ssb_chipcommon {
+ #ifdef CONFIG_SSB_SFLASH
+ struct bcm47xx_sflash sflash;
+ #endif
++ u32 ticks_per_ms;
++ u32 max_timer_ms;
+ };
+
+ static inline bool ssb_chipco_available(struct ssb_chipcommon *cc)
+@@ -646,8 +648,7 @@ enum ssb_clkmode {
+ extern void ssb_chipco_set_clockmode(struct ssb_chipcommon *cc,
+ enum ssb_clkmode mode);
+
+-extern void ssb_chipco_watchdog_timer_set(struct ssb_chipcommon *cc,
+- u32 ticks);
++extern u32 ssb_chipco_watchdog_timer_set(struct ssb_chipcommon *cc, u32 ticks);
+
+ void ssb_chipco_irq_mask(struct ssb_chipcommon *cc, u32 mask, u32 value);
+