diff options
| author | Hans Verkuil <hverkuil@xs4all.nl> | 2017-09-25 11:02:57 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2017-10-04 23:04:18 +0300 |
| commit | 5b2c8da1b040c4608c7cfdc0dd96bcaa190af268 (patch) | |
| tree | 80ec377a7821f1633a7f298458c589a2da47bd51 /drivers/media/platform/cec-gpio | |
| parent | 6c3b047fa2d2286d5e438bcb470c7b1a49f415f6 (diff) | |
| download | linux-5b2c8da1b040c4608c7cfdc0dd96bcaa190af268.tar.xz | |
[media] cec-gpio: don't generate spurious HPD events
Only send HPD_LOW/HIGH event if the gpio actually changed value.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers/media/platform/cec-gpio')
| -rw-r--r-- | drivers/media/platform/cec-gpio/cec-gpio.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/media/platform/cec-gpio/cec-gpio.c b/drivers/media/platform/cec-gpio/cec-gpio.c index eb982bce99fc..5debdf08fbe7 100644 --- a/drivers/media/platform/cec-gpio/cec-gpio.c +++ b/drivers/media/platform/cec-gpio/cec-gpio.c @@ -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) { 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_is_high = gpiod_get_value(cec->hpd_gpio); + cec->hpd_is_high = is_high; return IRQ_WAKE_THREAD; } |