mirror of
git://git.openwrt.org/openwrt/openwrt.git
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c62d86ecb8
This watchdog driver should work with SoC having a PMU. This fixes #11720. SVN-Revision: 34323
94 lines
2.6 KiB
Diff
94 lines
2.6 KiB
Diff
--- a/drivers/bcma/driver_chipcommon.c
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+++ b/drivers/bcma/driver_chipcommon.c
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@@ -10,6 +10,7 @@
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*/
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#include "bcma_private.h"
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+#include <linux/bcm47xx_wdt.h>
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#include <linux/export.h>
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#include <linux/bcma/bcma.h>
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@@ -52,6 +53,39 @@ static u32 bcma_chipco_watchdog_get_max_
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return (1 << nb) - 1;
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}
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+static u32 bcma_chipco_watchdog_timer_set_wdt(struct bcm47xx_wdt *wdt,
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+ u32 ticks)
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+{
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+ struct bcma_drv_cc *cc = bcm47xx_wdt_get_drvdata(wdt);
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+
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+ return bcma_chipco_watchdog_timer_set(cc, ticks);
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+}
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+
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+static u32 bcma_chipco_watchdog_timer_set_ms_wdt(struct bcm47xx_wdt *wdt,
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+ u32 ms)
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+{
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+ struct bcma_drv_cc *cc = bcm47xx_wdt_get_drvdata(wdt);
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+ u32 ticks;
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+
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+ ticks = bcma_chipco_watchdog_timer_set(cc, cc->ticks_per_ms * ms);
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+ return ticks / cc->ticks_per_ms;
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+}
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+
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+static int bcma_chipco_watchdog_ticks_per_ms(struct bcma_drv_cc *cc)
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+{
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+ struct bcma_bus *bus = cc->core->bus;
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+
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+ if (cc->capabilities & BCMA_CC_CAP_PMU) {
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+ if (bus->chipinfo.id == BCMA_CHIP_ID_BCM4706)
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+ /* 4706 CC and PMU watchdogs are clocked at 1/4 of ALP clock */
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+ return bcma_chipco_alp_clock(cc) / 4000;
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+ else
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+ /* based on 32KHz ILP clock */
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+ return 32;
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+ } else {
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+ return bcma_chipco_alp_clock(cc) / 1000;
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+ }
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+}
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void bcma_core_chipcommon_early_init(struct bcma_drv_cc *cc)
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{
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@@ -102,12 +136,13 @@ void bcma_core_chipcommon_init(struct bc
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}
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spin_lock_init(&cc->gpio_lock);
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+ cc->ticks_per_ms = bcma_chipco_watchdog_ticks_per_ms(cc);
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cc->setup_done = true;
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}
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/* Set chip watchdog reset timer to fire in 'ticks' backplane cycles */
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-void bcma_chipco_watchdog_timer_set(struct bcma_drv_cc *cc, u32 ticks)
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+u32 bcma_chipco_watchdog_timer_set(struct bcma_drv_cc *cc, u32 ticks)
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{
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u32 maxt;
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enum bcma_clkmode clkmode;
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@@ -126,6 +161,7 @@ void bcma_chipco_watchdog_timer_set(stru
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ticks = maxt;
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bcma_cc_write32(cc, BCMA_CC_WATCHDOG, ticks);
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}
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+ return ticks;
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}
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void bcma_chipco_irq_mask(struct bcma_drv_cc *cc, u32 mask, u32 value)
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--- a/include/linux/bcma/bcma_driver_chipcommon.h
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+++ b/include/linux/bcma/bcma_driver_chipcommon.h
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@@ -554,6 +554,7 @@ struct bcma_drv_cc {
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/* Lock for GPIO register access. */
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spinlock_t gpio_lock;
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+ u32 ticks_per_ms;
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};
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/* Register access */
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@@ -577,8 +578,7 @@ extern void bcma_chipco_resume(struct bc
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void bcma_chipco_bcm4331_ext_pa_lines_ctl(struct bcma_drv_cc *cc, bool enable);
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-extern void bcma_chipco_watchdog_timer_set(struct bcma_drv_cc *cc,
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- u32 ticks);
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+extern u32 bcma_chipco_watchdog_timer_set(struct bcma_drv_cc *cc, u32 ticks);
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void bcma_chipco_irq_mask(struct bcma_drv_cc *cc, u32 mask, u32 value);
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