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media: cec-pin: create cec_pin_start_timer() function

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This function will be needed for injecting a custom pulse.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Hans Verkuil 2017-10-31 09:55:09 -04:00 committed by Mauro Carvalho Chehab
parent 6902c88a46
commit 0ee492ad54
2 changed files with 15 additions and 8 deletions
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2
drivers/media/cec/cec-pin-priv.h
View File

@ -118,4 +118,6 @@ struct cec_pin {
u32 timer_sum_overrun;
};
void cec_pin_start_timer(struct cec_pin *pin);
#endif

21
drivers/media/cec/cec-pin.c
View File

@ -680,6 +680,18 @@ static int cec_pin_adap_log_addr(struct cec_adapter *adap, u8 log_addr)
return 0;
}
void cec_pin_start_timer(struct cec_pin *pin)
{
if (pin->state != CEC_ST_RX_IRQ)
return;
atomic_set(&pin->work_irq_change, CEC_PIN_IRQ_UNCHANGED);
pin->ops->disable_irq(pin->adap);
cec_pin_high(pin);
cec_pin_to_idle(pin);
hrtimer_start(&pin->timer, ns_to_ktime(0), HRTIMER_MODE_REL);
}
static int cec_pin_adap_transmit(struct cec_adapter *adap, u8 attempts,
u32 signal_free_time, struct cec_msg *msg)
{
@ -689,14 +701,7 @@ static int cec_pin_adap_transmit(struct cec_adapter *adap, u8 attempts,
pin->tx_msg = *msg;
pin->work_tx_status = 0;
pin->tx_bit = 0;
if (pin->state == CEC_ST_RX_IRQ) {
atomic_set(&pin->work_irq_change, CEC_PIN_IRQ_UNCHANGED);
pin->ops->disable_irq(adap);
cec_pin_high(pin);
cec_pin_to_idle(pin);
hrtimer_start(&pin->timer, ns_to_ktime(0),
HRTIMER_MODE_REL);
}
cec_pin_start_timer(pin);
return 0;
}