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-rw-r--r--drivers/bcma/driver_chipcommon.c38
-rw-r--r--include/linux/bcma/bcma_driver_chipcommon.h4
2 files changed, 39 insertions, 3 deletions
diff --git a/drivers/bcma/driver_chipcommon.c b/drivers/bcma/driver_chipcommon.c
index 7c132e5eceb0..117222697e1f 100644
--- a/drivers/bcma/driver_chipcommon.c
+++ b/drivers/bcma/driver_chipcommon.c
@@ -10,6 +10,7 @@
*/
#include "bcma_private.h"
+#include <linux/bcm47xx_wdt.h>
#include <linux/export.h>
#include <linux/bcma/bcma.h>
@@ -52,6 +53,39 @@ static u32 bcma_chipco_watchdog_get_max_timer(struct bcma_drv_cc *cc)
return (1 << nb) - 1;
}
+static u32 bcma_chipco_watchdog_timer_set_wdt(struct bcm47xx_wdt *wdt,
+ u32 ticks)
+{
+ struct bcma_drv_cc *cc = bcm47xx_wdt_get_drvdata(wdt);
+
+ return bcma_chipco_watchdog_timer_set(cc, ticks);
+}
+
+static u32 bcma_chipco_watchdog_timer_set_ms_wdt(struct bcm47xx_wdt *wdt,
+ u32 ms)
+{
+ struct bcma_drv_cc *cc = bcm47xx_wdt_get_drvdata(wdt);
+ u32 ticks;
+
+ ticks = bcma_chipco_watchdog_timer_set(cc, cc->ticks_per_ms * ms);
+ return ticks / cc->ticks_per_ms;
+}
+
+static int bcma_chipco_watchdog_ticks_per_ms(struct bcma_drv_cc *cc)
+{
+ struct bcma_bus *bus = cc->core->bus;
+
+ if (cc->capabilities & BCMA_CC_CAP_PMU) {
+ if (bus->chipinfo.id == BCMA_CHIP_ID_BCM4706)
+ /* 4706 CC and PMU watchdogs are clocked at 1/4 of ALP clock */
+ return bcma_chipco_alp_clock(cc) / 4000;
+ else
+ /* based on 32KHz ILP clock */
+ return 32;
+ } else {
+ return bcma_chipco_alp_clock(cc) / 1000;
+ }
+}
void bcma_core_chipcommon_early_init(struct bcma_drv_cc *cc)
{
@@ -100,12 +134,13 @@ void bcma_core_chipcommon_init(struct bcma_drv_cc *cc)
((leddc_on << BCMA_CC_GPIOTIMER_ONTIME_SHIFT) |
(leddc_off << BCMA_CC_GPIOTIMER_OFFTIME_SHIFT)));
}
+ cc->ticks_per_ms = bcma_chipco_watchdog_ticks_per_ms(cc);
cc->setup_done = true;
}
/* Set chip watchdog reset timer to fire in 'ticks' backplane cycles */
-void bcma_chipco_watchdog_timer_set(struct bcma_drv_cc *cc, u32 ticks)
+u32 bcma_chipco_watchdog_timer_set(struct bcma_drv_cc *cc, u32 ticks)
{
u32 maxt;
enum bcma_clkmode clkmode;
@@ -125,6 +160,7 @@ void bcma_chipco_watchdog_timer_set(struct bcma_drv_cc *cc, u32 ticks)
/* instant NMI */
bcma_cc_write32(cc, BCMA_CC_WATCHDOG, ticks);
}
+ return ticks;
}
void bcma_chipco_irq_mask(struct bcma_drv_cc *cc, u32 mask, u32 value)
diff --git a/include/linux/bcma/bcma_driver_chipcommon.h b/include/linux/bcma/bcma_driver_chipcommon.h
index 145f3c56227f..2f9b01493a90 100644
--- a/include/linux/bcma/bcma_driver_chipcommon.h
+++ b/include/linux/bcma/bcma_driver_chipcommon.h
@@ -570,6 +570,7 @@ struct bcma_drv_cc {
int nr_serial_ports;
struct bcma_serial_port serial_ports[4];
#endif /* CONFIG_BCMA_DRIVER_MIPS */
+ u32 ticks_per_ms;
};
/* Register access */
@@ -593,8 +594,7 @@ extern void bcma_chipco_resume(struct bcma_drv_cc *cc);
void bcma_chipco_bcm4331_ext_pa_lines_ctl(struct bcma_drv_cc *cc, bool enable);
-extern void bcma_chipco_watchdog_timer_set(struct bcma_drv_cc *cc,
- u32 ticks);
+extern u32 bcma_chipco_watchdog_timer_set(struct bcma_drv_cc *cc, u32 ticks);
void bcma_chipco_irq_mask(struct bcma_drv_cc *cc, u32 mask, u32 value);