From 822963b96dfdb72ec4fb1395fbdfa778656b49d1 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Fri, 28 Oct 2022 13:38:13 +0300 Subject: 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 Link: https://lore.kernel.org/r/20221028103813.40783-1-tony@atomide.com Signed-off-by: Daniel Lezcano --- drivers/clocksource/timer-ti-dm.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'drivers/clocksource') diff --git a/drivers/clocksource/timer-ti-dm.c b/drivers/clocksource/timer-ti-dm.c index eeeeb3c08c91..b24b903a8822 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); } -- cgit v1.2.3