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Commit 5b2c8da1 authored by Hans Verkuil's avatar Hans Verkuil Committed by Mauro Carvalho Chehab
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[media] cec-gpio: don't generate spurious HPD events 



Only send HPD_LOW/HIGH event if the gpio actually changed value.

Signed-off-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@osg.samsung.com>
parent 6c3b047f

drivers/media/platform/cec-gpio/cec-gpio.c

+4 −1
Original line number Original line Diff line number Diff line
@@ -80,9 +80,12 @@ static irqreturn_t cec_hpd_gpio_irq_handler_thread(int irq, void *priv) 
static irqreturn_t cec_hpd_gpio_irq_handler(int irq, void *priv)

static irqreturn_t cec_hpd_gpio_irq_handler(int irq, void *priv)

{

{

	struct cec_gpio *cec = priv;

	struct cec_gpio *cec = priv;

	bool is_high = gpiod_get_value(cec->hpd_gpio);





	if (is_high == cec->hpd_is_high)

		return IRQ_HANDLED;

	cec->hpd_ts = ktime_get();

	cec->hpd_ts = ktime_get();

	cec->hpd_is_high = gpiod_get_value(cec->hpd_gpio);

	cec->hpd_is_high = is_high;

	return IRQ_WAKE_THREAD;

	return IRQ_WAKE_THREAD;

}

}