On 2018-08-07 12:02, Bjorn Andersson wrote:
On Mon 09 Jul 03:22 PDT 2018, Kiran Gunda wrote:
diff --git a/drivers/video/backlight/qcom-wled.c
b/drivers/video/backlight/qcom-wled.c
[..]
@@ -189,6 +206,15 @@ static int wled4_set_brightness(struct wled
*wled, u16 brightness)
return 0;
}
+static void wled_ovp_work(struct work_struct *work)
+{
+ struct wled *wled = container_of(work,
+ struct wled, ovp_work.work);
+
+ if (wled->ovp_irq > 0)
+ enable_irq(wled->ovp_irq);
+}
+
static int wled_module_enable(struct wled *wled, int val)
{
int rc;
@@ -200,7 +226,18 @@ static int wled_module_enable(struct wled *wled,
int val)
WLED_CTRL_REG_MOD_EN,
WLED_CTRL_REG_MOD_EN_MASK,
val << WLED_CTRL_REG_MOD_EN_SHIFT);
- return rc;
+ if (rc < 0)
+ return rc;
+
+ if (val) {
+ schedule_delayed_work(&wled->ovp_work, WLED_SOFT_START_DLY_US);
schedule_delayed_work() takes a delay in jiffies, not micro seconds.
I will address it in the next series.
+ } else {
+ cancel_delayed_work_sync(&wled->ovp_work);
If we get here within WLED_SOFT_START_DLY_US of a module enable we have
yet to execute the enable_irq() in the delayed worker, which should
mean
that the irq is unbalanced from then on.
I believe you can check the return value of cancel_delayed_work_sync()
being true to know if wled_ovp_work() was yet to execute.
Ok. I will address it in next series.
+ if (wled->ovp_irq > 0)
+ disable_irq(wled->ovp_irq);
+ }
+
+ return 0;
}
Regards,
Bjorn
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