aboutsummaryrefslogtreecommitdiff
path: root/drivers/bcma
diff options
context:
space:
mode:
authorHauke Mehrtens <hauke@hauke-m.de>2012-12-05 18:46:00 +0100
committerJohn W. Linville <linville@tuxdriver.com>2012-12-06 14:58:56 -0500
commitf6354c8cf9a3be15de441fad593ce53e63e9bf2a (patch)
treef104ed39606c8ae9e15cb1374f2381efd3f88cc7 /drivers/bcma
parent56fd5f077223df1284a3501d1e3ba2e5b19d154a (diff)
downloadvexpress-lsk-f6354c8cf9a3be15de441fad593ce53e63e9bf2a.tar.gz
bcma: set the pmu watchdog if available
Mostly all bcma based devices have a PMU and the PMU watchdog should be used and not the old one in chip common. This patch also calculates the maximal number the watchdog could be set to. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/bcma')
-rw-r--r--drivers/bcma/driver_chipcommon.c42
1 files changed, 40 insertions, 2 deletions
diff --git a/drivers/bcma/driver_chipcommon.c b/drivers/bcma/driver_chipcommon.c
index ef6855398b8..7c132e5eceb 100644
--- a/drivers/bcma/driver_chipcommon.c
+++ b/drivers/bcma/driver_chipcommon.c
@@ -31,6 +31,28 @@ static u32 bcma_chipco_alp_clock(struct bcma_drv_cc *cc)
return 20000000;
}
+static u32 bcma_chipco_watchdog_get_max_timer(struct bcma_drv_cc *cc)
+{
+ struct bcma_bus *bus = cc->core->bus;
+ u32 nb;
+
+ if (cc->capabilities & BCMA_CC_CAP_PMU) {
+ if (bus->chipinfo.id == BCMA_CHIP_ID_BCM4706)
+ nb = 32;
+ else if (cc->core->id.rev < 26)
+ nb = 16;
+ else
+ nb = (cc->core->id.rev >= 37) ? 32 : 24;
+ } else {
+ nb = 28;
+ }
+ if (nb == 32)
+ return 0xffffffff;
+ else
+ return (1 << nb) - 1;
+}
+
+
void bcma_core_chipcommon_early_init(struct bcma_drv_cc *cc)
{
if (cc->early_setup_done)
@@ -85,8 +107,24 @@ void bcma_core_chipcommon_init(struct bcma_drv_cc *cc)
/* Set chip watchdog reset timer to fire in 'ticks' backplane cycles */
void bcma_chipco_watchdog_timer_set(struct bcma_drv_cc *cc, u32 ticks)
{
- /* instant NMI */
- bcma_cc_write32(cc, BCMA_CC_WATCHDOG, ticks);
+ u32 maxt;
+ enum bcma_clkmode clkmode;
+
+ maxt = bcma_chipco_watchdog_get_max_timer(cc);
+ if (cc->capabilities & BCMA_CC_CAP_PMU) {
+ if (ticks == 1)
+ ticks = 2;
+ else if (ticks > maxt)
+ ticks = maxt;
+ bcma_cc_write32(cc, BCMA_CC_PMU_WATCHDOG, ticks);
+ } else {
+ clkmode = ticks ? BCMA_CLKMODE_FAST : BCMA_CLKMODE_DYNAMIC;
+ bcma_core_set_clockmode(cc->core, clkmode);
+ if (ticks > maxt)
+ ticks = maxt;
+ /* instant NMI */
+ bcma_cc_write32(cc, BCMA_CC_WATCHDOG, ticks);
+ }
}
void bcma_chipco_irq_mask(struct bcma_drv_cc *cc, u32 mask, u32 value)