ptp: ptp_clockmatrix: return -EBUSY if phase pull-in is in progress

Also removes PEROUT_ENABLE_OUTPUT_MASK
Signed-off-by: Min Li <min.li.xe@renesas.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Link: https://lore.kernel.org/r/1652712427-14703-2-git-send-email-min.li.xe@renesas.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/ptp/ptp_clockmatrix.c

@@ -1352,43 +1352,15 @@ static int idtcm_output_enable(struct idtcm_channel *channel,
 	return idtcm_write(idtcm, (u16)base, OUT_CTRL_1, &val, sizeof(val));
 }
 
-static int idtcm_output_mask_enable(struct idtcm_channel *channel,
-				    bool enable)
-{
-	u16 mask;
-	int err;
-	u8 outn;
-
-	mask = channel->output_mask;
-	outn = 0;
-
-	while (mask) {
-		if (mask & 0x1) {
-			err = idtcm_output_enable(channel, enable, outn);
-			if (err)
-				return err;
-		}
-
-		mask >>= 0x1;
-		outn++;
-	}
-
-	return 0;
-}
-
 static int idtcm_perout_enable(struct idtcm_channel *channel,
 			       struct ptp_perout_request *perout,
 			       bool enable)
 {
 	struct idtcm *idtcm = channel->idtcm;
-	unsigned int flags = perout->flags;
 	struct timespec64 ts = {0, 0};
 	int err;
 
-	if (flags == PEROUT_ENABLE_OUTPUT_MASK)
-		err = idtcm_output_mask_enable(channel, enable);
-	else
-		err = idtcm_output_enable(channel, enable, perout->index);
+	err = idtcm_output_enable(channel, enable, perout->index);
 
 	if (err) {
 		dev_err(idtcm->dev, "Unable to set output enable");
@@ -1892,7 +1864,7 @@ static int idtcm_adjtime(struct ptp_clock_info *ptp, s64 delta)
 	int err;
 
 	if (channel->phase_pull_in == true)
-		return 0;
+		return -EBUSY;
 
 	mutex_lock(idtcm->lock);
 

drivers/ptp/ptp_clockmatrix.h

@@ -54,8 +54,6 @@
 #define LOCK_TIMEOUT_MS			(2000)
 #define LOCK_POLL_INTERVAL_MS		(10)
 
-#define PEROUT_ENABLE_OUTPUT_MASK	(0xdeadbeef)
-
 #define IDTCM_MAX_WRITE_COUNT		(512)
 
 #define PHASE_PULL_IN_MAX_PPB		(144000)