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media: cec: add *_ts variants for transmit_done/received_msg

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Currently the transmit_(attempt_)done and received_msg functions set
the timestamp themselves. For the upcoming low-level pin API we need
to pass this as an argument instead. So make _ts variants that allow
the caller to specify the timestamp.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Reviewed-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Hans Verkuil 2017-07-11 03:30:35 -03:00 committed by Mauro Carvalho Chehab
parent bb789e03f2
commit 0861ad14c6
2 changed files with 47 additions and 20 deletions
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35
drivers/media/cec/cec-adap.c
View File

@ -471,12 +471,12 @@ unlock:
/*
* Called by the CEC adapter if a transmit finished.
*/
void cec_transmit_done(struct cec_adapter *adap, u8 status, u8 arb_lost_cnt,
u8 nack_cnt, u8 low_drive_cnt, u8 error_cnt)
void cec_transmit_done_ts(struct cec_adapter *adap, u8 status,
u8 arb_lost_cnt, u8 nack_cnt, u8 low_drive_cnt,
u8 error_cnt, ktime_t ts)
{
struct cec_data *data;
struct cec_msg *msg;
u64 ts = ktime_get_ns();
dprintk(2, "%s: status %02x\n", __func__, status);
mutex_lock(&adap->lock);
@ -496,7 +496,7 @@ void cec_transmit_done(struct cec_adapter *adap, u8 status, u8 arb_lost_cnt,
/* Drivers must fill in the status! */
WARN_ON(status == 0);
msg->tx_ts = ts;
msg->tx_ts = ktime_to_ns(ts);
msg->tx_status |= status;
msg->tx_arb_lost_cnt += arb_lost_cnt;
msg->tx_nack_cnt += nack_cnt;
@ -559,25 +559,26 @@ wake_thread:
unlock:
mutex_unlock(&adap->lock);
}
EXPORT_SYMBOL_GPL(cec_transmit_done);
EXPORT_SYMBOL_GPL(cec_transmit_done_ts);
void cec_transmit_attempt_done(struct cec_adapter *adap, u8 status)
void cec_transmit_attempt_done_ts(struct cec_adapter *adap,
u8 status, ktime_t ts)
{
switch (status) {
case CEC_TX_STATUS_OK:
cec_transmit_done(adap, status, 0, 0, 0, 0);
cec_transmit_done_ts(adap, status, 0, 0, 0, 0, ts);
return;
case CEC_TX_STATUS_ARB_LOST:
cec_transmit_done(adap, status, 1, 0, 0, 0);
cec_transmit_done_ts(adap, status, 1, 0, 0, 0, ts);
return;
case CEC_TX_STATUS_NACK:
cec_transmit_done(adap, status, 0, 1, 0, 0);
cec_transmit_done_ts(adap, status, 0, 1, 0, 0, ts);
return;
case CEC_TX_STATUS_LOW_DRIVE:
cec_transmit_done(adap, status, 0, 0, 1, 0);
cec_transmit_done_ts(adap, status, 0, 0, 1, 0, ts);
return;
case CEC_TX_STATUS_ERROR:
cec_transmit_done(adap, status, 0, 0, 0, 1);
cec_transmit_done_ts(adap, status, 0, 0, 0, 1, ts);
return;
default:
/* Should never happen */
@ -585,7 +586,7 @@ void cec_transmit_attempt_done(struct cec_adapter *adap, u8 status)
return;
}
}
EXPORT_SYMBOL_GPL(cec_transmit_attempt_done);
EXPORT_SYMBOL_GPL(cec_transmit_attempt_done_ts);
/*
* Called when waiting for a reply times out.
@ -721,7 +722,8 @@ int cec_transmit_msg_fh(struct cec_adapter *adap, struct cec_msg *msg,
if (msg->timeout)
dprintk(2, "%s: %*ph (wait for 0x%02x%s)\n",
__func__, msg->len, msg->msg, msg->reply, !block ? ", nb" : "");
__func__, msg->len, msg->msg, msg->reply,
!block ? ", nb" : "");
else
dprintk(2, "%s: %*ph%s\n",
__func__, msg->len, msg->msg, !block ? " (nb)" : "");
@ -918,7 +920,8 @@ static const u8 cec_msg_size[256] = {
};
/* Called by the CEC adapter if a message is received */
void cec_received_msg(struct cec_adapter *adap, struct cec_msg *msg)
void cec_received_msg_ts(struct cec_adapter *adap,
struct cec_msg *msg, ktime_t ts)
{
struct cec_data *data;
u8 msg_init = cec_msg_initiator(msg);
@ -946,7 +949,7 @@ void cec_received_msg(struct cec_adapter *adap, struct cec_msg *msg)
cec_has_log_addr(adap, msg_init))
return;
msg->rx_ts = ktime_get_ns();
msg->rx_ts = ktime_to_ns(ts);
msg->rx_status = CEC_RX_STATUS_OK;
msg->sequence = msg->reply = msg->timeout = 0;
msg->tx_status = 0;
@ -1111,7 +1114,7 @@ void cec_received_msg(struct cec_adapter *adap, struct cec_msg *msg)
*/
cec_receive_notify(adap, msg, is_reply);
}
EXPORT_SYMBOL_GPL(cec_received_msg);
EXPORT_SYMBOL_GPL(cec_received_msg_ts);
/* Logical Address Handling */

32
include/media/cec.h
View File

@ -228,15 +228,39 @@ int cec_transmit_msg(struct cec_adapter *adap, struct cec_msg *msg,
bool block);
/* Called by the adapter */
void cec_transmit_done(struct cec_adapter *adap, u8 status, u8 arb_lost_cnt,
u8 nack_cnt, u8 low_drive_cnt, u8 error_cnt);
void cec_transmit_done_ts(struct cec_adapter *adap, u8 status,
u8 arb_lost_cnt, u8 nack_cnt, u8 low_drive_cnt,
u8 error_cnt, ktime_t ts);
static inline void cec_transmit_done(struct cec_adapter *adap, u8 status,
u8 arb_lost_cnt, u8 nack_cnt,
u8 low_drive_cnt, u8 error_cnt)
{
cec_transmit_done_ts(adap, status, arb_lost_cnt, nack_cnt,
low_drive_cnt, error_cnt, ktime_get());
}
/*
* Simplified version of cec_transmit_done for hardware that doesn't retry
* failed transmits. So this is always just one attempt in which case
* the status is sufficient.
*/
void cec_transmit_attempt_done(struct cec_adapter *adap, u8 status);
void cec_received_msg(struct cec_adapter *adap, struct cec_msg *msg);
void cec_transmit_attempt_done_ts(struct cec_adapter *adap,
u8 status, ktime_t ts);
static inline void cec_transmit_attempt_done(struct cec_adapter *adap,
u8 status)
{
cec_transmit_attempt_done_ts(adap, status, ktime_get());
}
void cec_received_msg_ts(struct cec_adapter *adap,
struct cec_msg *msg, ktime_t ts);
static inline void cec_received_msg(struct cec_adapter *adap,
struct cec_msg *msg)
{
cec_received_msg_ts(adap, msg, ktime_get());
}
/**
* cec_get_edid_phys_addr() - find and return the physical address