[alsa-devel] [PATCH v2 4/7] ASoC: omap-mcbsp: Move out the FIFO check from set_threshold and get_delay

[Peter Ujfalusi]

Check if the McBSP have FIFO in the omap_mcbsp_set_threshold() and
omap_mcbsp_dai_delay() delay function to skip calling the lower layer if
it is not needed.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi at ti.com>
---
 sound/soc/omap/mcbsp.c      | 12 ------------
 sound/soc/omap/omap-mcbsp.c |  8 ++++++++
 2 files changed, 8 insertions(+), 12 deletions(-)

diff --git a/sound/soc/omap/mcbsp.c b/sound/soc/omap/mcbsp.c
index 7ff22561f00f..b19168f5c110 100644
--- a/sound/soc/omap/mcbsp.c
+++ b/sound/soc/omap/mcbsp.c
@@ -450,9 +450,6 @@ int omap_st_is_enabled(struct omap_mcbsp *mcbsp)
  */
 void omap_mcbsp_set_tx_threshold(struct omap_mcbsp *mcbsp, u16 threshold)
 {
-	if (mcbsp->pdata->buffer_size == 0)
-		return;
-
 	if (threshold && threshold <= mcbsp->max_tx_thres)
 		MCBSP_WRITE(mcbsp, THRSH2, threshold - 1);
 }
@@ -464,9 +461,6 @@ void omap_mcbsp_set_tx_threshold(struct omap_mcbsp *mcbsp, u16 threshold)
  */
 void omap_mcbsp_set_rx_threshold(struct omap_mcbsp *mcbsp, u16 threshold)
 {
-	if (mcbsp->pdata->buffer_size == 0)
-		return;
-
 	if (threshold && threshold <= mcbsp->max_rx_thres)
 		MCBSP_WRITE(mcbsp, THRSH1, threshold - 1);
 }
@@ -478,9 +472,6 @@ u16 omap_mcbsp_get_tx_delay(struct omap_mcbsp *mcbsp)
 {
 	u16 buffstat;
 
-	if (mcbsp->pdata->buffer_size == 0)
-		return 0;
-
 	/* Returns the number of free locations in the buffer */
 	buffstat = MCBSP_READ(mcbsp, XBUFFSTAT);
 
@@ -496,9 +487,6 @@ u16 omap_mcbsp_get_rx_delay(struct omap_mcbsp *mcbsp)
 {
 	u16 buffstat, threshold;
 
-	if (mcbsp->pdata->buffer_size == 0)
-		return 0;
-
 	/* Returns the number of used locations in the buffer */
 	buffstat = MCBSP_READ(mcbsp, RBUFFSTAT);
 	/* RX threshold */
diff --git a/sound/soc/omap/omap-mcbsp.c b/sound/soc/omap/omap-mcbsp.c
index a18b7ecc3a2e..69a6b8ad6d42 100644
--- a/sound/soc/omap/omap-mcbsp.c
+++ b/sound/soc/omap/omap-mcbsp.c
@@ -71,6 +71,10 @@ static void omap_mcbsp_set_threshold(struct snd_pcm_substream *substream,
 	struct omap_mcbsp *mcbsp = snd_soc_dai_get_drvdata(cpu_dai);
 	int words;
 
+	/* No need to proceed further if McBSP does not have FIFO */
+	if (mcbsp->pdata->buffer_size == 0)
+		return;
+
 	/*
 	 * Configure McBSP threshold based on either:
 	 * packet_size, when the sDMA is in packet mode, or based on the
@@ -233,6 +237,10 @@ static snd_pcm_sframes_t omap_mcbsp_dai_delay(
 	u16 fifo_use;
 	snd_pcm_sframes_t delay;
 
+	/* No need to proceed further if McBSP does not have FIFO */
+	if (mcbsp->pdata->buffer_size == 0)
+		return 0;
+
 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 		fifo_use = omap_mcbsp_get_tx_delay(mcbsp);
 	else
-- 
Peter

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