bcma: add methods for watchdog driver

The watchdog driver wants to set the watchdog timeout in ms and not in
ticks, which is depending on the SoC type and the clock.
Calculate the number of ticks per millisecond and provide two functions
for the watchdog driver. Also return the ticks or millisecond the timer
was set to in case the provided value was bigger than the max allowed
value.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 2 insertions, 2 deletions

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);