summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorNicolin Chen <nicoleotsuka@gmail.com>2014-10-24 16:48:12 -0700
committerMark Brown <broonie@kernel.org>2014-11-25 12:47:13 +0000
commit86ea522b369abbbe92b4d66a238e79319ca46ba5 (patch)
tree4a5720fa4ede3f675d6d1c62f0974ffaa9836db8
parent5d01410fe4d92081f349b013a2e7a95429e4f2c9 (diff)
ASoC: fsl_esai: Use dynamic slot width as default
The driver previously used 32-bit fixed slot width as default. In result, ESAI might use 32-bit length to capture 16-bit width audio slot from CODEC side when ESAI is running as DAI slave. So this patch just removes the default slot_width so as to use dynamic slot width. If there comes a specific situation that needs a fixed width, the machine driver shall set slot_width via set_tdm_slot() so as to let the ESAI driver replace the dynamic width policy with the fixed value. Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
-rw-r--r--sound/soc/fsl/fsl_esai.c12
1 files changed, 7 insertions, 5 deletions
diff --git a/sound/soc/fsl/fsl_esai.c b/sound/soc/fsl/fsl_esai.c
index a645e296199e..ca319d59f843 100644
--- a/sound/soc/fsl/fsl_esai.c
+++ b/sound/soc/fsl/fsl_esai.c
@@ -513,10 +513,15 @@ static int fsl_esai_hw_params(struct snd_pcm_substream *substream,
u32 width = snd_pcm_format_width(params_format(params));
u32 channels = params_channels(params);
u32 pins = DIV_ROUND_UP(channels, esai_priv->slots);
+ u32 slot_width = width;
u32 bclk, mask, val;
int ret;
- bclk = params_rate(params) * esai_priv->slot_width * esai_priv->slots;
+ /* Override slot_width if being specifially set */
+ if (esai_priv->slot_width)
+ slot_width = esai_priv->slot_width;
+
+ bclk = params_rate(params) * slot_width * esai_priv->slots;
ret = fsl_esai_set_bclk(dai, tx, bclk);
if (ret)
@@ -538,7 +543,7 @@ static int fsl_esai_hw_params(struct snd_pcm_substream *substream,
regmap_update_bits(esai_priv->regmap, REG_ESAI_xFCR(tx), mask, val);
mask = ESAI_xCR_xSWS_MASK | (tx ? ESAI_xCR_PADC : 0);
- val = ESAI_xCR_xSWS(esai_priv->slot_width, width) | (tx ? ESAI_xCR_PADC : 0);
+ val = ESAI_xCR_xSWS(slot_width, width) | (tx ? ESAI_xCR_PADC : 0);
regmap_update_bits(esai_priv->regmap, REG_ESAI_xCR(tx), mask, val);
@@ -780,9 +785,6 @@ static int fsl_esai_probe(struct platform_device *pdev)
return ret;
}
- /* Set a default slot size */
- esai_priv->slot_width = 32;
-
/* Set a default slot number */
esai_priv->slots = 2;