diff options
Diffstat (limited to 'sound/soc/fsl/fsl_sai.c')
| -rw-r--r-- | sound/soc/fsl/fsl_sai.c | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/sound/soc/fsl/fsl_sai.c b/sound/soc/fsl/fsl_sai.c index c9341c25edf1..02b4cffa8455 100644 --- a/sound/soc/fsl/fsl_sai.c +++ b/sound/soc/fsl/fsl_sai.c @@ -343,11 +343,10 @@ static int fsl_sai_set_bclk(struct snd_soc_dai *dai, bool tx, u32 freq) struct fsl_sai *sai = snd_soc_dai_get_drvdata(dai); unsigned int reg, ofs = sai->soc_data->reg_offset; unsigned long clk_rate; - u32 savediv = 0, ratio, savesub = freq; + u32 savediv = 0, ratio, bestdiff = freq; int adir = tx ? RX : TX; int dir = tx ? TX : RX; u32 id; - int ret = 0; /* Don't apply to consumer mode */ if (sai->is_consumer_mode) @@ -361,19 +360,21 @@ static int fsl_sai_set_bclk(struct snd_soc_dai *dai, bool tx, u32 freq) id = sai->soc_data->mclk0_is_mclk1 ? 1 : 0; for (; id < FSL_SAI_MCLK_MAX; id++) { + int diff; + clk_rate = clk_get_rate(sai->mclk_clk[id]); if (!clk_rate) continue; ratio = clk_rate / freq; - ret = clk_rate - ratio * freq; + diff = clk_rate - ratio * freq; /* * Drop the source that can not be * divided into the required rate. */ - if (ret != 0 && clk_rate / ret < 1000) + if (diff != 0 && clk_rate / diff < 1000) continue; dev_dbg(dai->dev, @@ -385,13 +386,13 @@ static int fsl_sai_set_bclk(struct snd_soc_dai *dai, bool tx, u32 freq) else continue; - if (ret < savesub) { + if (diff < bestdiff) { savediv = ratio; sai->mclk_id[tx] = id; - savesub = ret; + bestdiff = diff; } - if (ret == 0) + if (diff == 0) break; } @@ -402,7 +403,7 @@ static int fsl_sai_set_bclk(struct snd_soc_dai *dai, bool tx, u32 freq) } dev_dbg(dai->dev, "best fit: clock id=%d, div=%d, deviation =%d\n", - sai->mclk_id[tx], savediv, savesub); + sai->mclk_id[tx], savediv, bestdiff); /* * 1) For Asynchronous mode, we must set RCR2 register for capture, and |