diff options
| author | Tony Lindgren <tony@atomide.com> | 2022-10-28 13:38:13 +0300 |
|---|---|---|
| committer | Daniel Lezcano <daniel.lezcano@kernel.org> | 2022-12-02 13:16:46 +0100 |
| commit | 822963b96dfdb72ec4fb1395fbdfa778656b49d1 (patch) | |
| tree | 44104a1c8b59798796190b8de65a4a3c5bae70a7 /drivers/clocksource | |
| parent | dedb2aced3e958c6f4811d3e6b392652ff0eea01 (diff) | |
| download | linux-822963b96dfdb72ec4fb1395fbdfa778656b49d1.tar.gz | |
clocksource/drivers/timer-ti-dm: Clear settings on probe and free
Clear the timer control register on driver probe and omap_dm_timer_free().
Otherwise we assume the consumer driver takes care of properly
initializing timer interrupts on PWM driver module reload for example.
AFAIK this is not currently needed as a fix, I just happened to run into
this while cleaning up things.
Signed-off-by: Tony Lindgren <tony@atomide.com>
Link: https://lore.kernel.org/r/20221028103813.40783-1-tony@atomide.com
Signed-off-by: Daniel Lezcano <daniel.lezcano@kernel.org>
Diffstat (limited to 'drivers/clocksource')
| -rw-r--r-- | drivers/clocksource/timer-ti-dm.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/clocksource/timer-ti-dm.c b/drivers/clocksource/timer-ti-dm.c index eeeeb3c08c91a..b24b903a88222 100644 --- a/drivers/clocksource/timer-ti-dm.c +++ b/drivers/clocksource/timer-ti-dm.c @@ -633,6 +633,8 @@ static struct omap_dm_timer *omap_dm_timer_request_by_node(struct device_node *n static int omap_dm_timer_free(struct omap_dm_timer *cookie) { struct dmtimer *timer; + struct device *dev; + int rc; timer = to_dmtimer(cookie); if (unlikely(!timer)) @@ -640,6 +642,17 @@ static int omap_dm_timer_free(struct omap_dm_timer *cookie) WARN_ON(!timer->reserved); timer->reserved = 0; + + dev = &timer->pdev->dev; + rc = pm_runtime_resume_and_get(dev); + if (rc) + return rc; + + /* Clear timer configuration */ + dmtimer_write(timer, OMAP_TIMER_CTRL_REG, 0); + + pm_runtime_put_sync(dev); + return 0; } @@ -1135,6 +1148,10 @@ static int omap_dm_timer_probe(struct platform_device *pdev) goto err_disable; } __omap_dm_timer_init_regs(timer); + + /* Clear timer configuration */ + dmtimer_write(timer, OMAP_TIMER_CTRL_REG, 0); + pm_runtime_put(dev); } |