diff options
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/fsl/fsl_spdif.c | 15 | ||||
| -rw-r--r-- | sound/soc/fsl/fsl_spdif.h | 2 |
2 files changed, 14 insertions, 3 deletions
diff --git a/sound/soc/fsl/fsl_spdif.c b/sound/soc/fsl/fsl_spdif.c index 7ae2a25..6df70a9 100644 --- a/sound/soc/fsl/fsl_spdif.c +++ b/sound/soc/fsl/fsl_spdif.c @@ -384,6 +384,10 @@ static int spdif_set_sample_rate(struct snd_pcm_substream *substream, return -EINVAL; } + /* Don't mess up the clocks from other modules */ + if (clk != STC_TXCLK_SPDIF_ROOT) + goto clk_set_bypass; + /* * The S/PDIF block needs a clock of 64 * fs * div. The S/PDIF block * will divide by (div). So request 64 * fs * (div+1) which will @@ -395,6 +399,7 @@ static int spdif_set_sample_rate(struct snd_pcm_substream *substream, return ret; } +clk_set_bypass: dev_dbg(&pdev->dev, "expected clock rate = %d\n", (64 * sample_rate * div)); dev_dbg(&pdev->dev, "actual clock rate = %ld\n", @@ -1011,7 +1016,7 @@ static struct regmap_config fsl_spdif_regmap_config = { static u32 fsl_spdif_txclk_caldiv(struct fsl_spdif_priv *spdif_priv, struct clk *clk, u64 savesub, - enum spdif_txrate index) + enum spdif_txrate index, bool round) { const u32 rate[] = { 32000, 44100, 48000 }; u64 rate_ideal, rate_actual, sub; @@ -1019,7 +1024,10 @@ static u32 fsl_spdif_txclk_caldiv(struct fsl_spdif_priv *spdif_priv, for (div = 1; div <= 128; div++) { rate_ideal = rate[index] * (div + 1) * 64; - rate_actual = clk_round_rate(clk, rate_ideal); + if (round) + rate_actual = clk_round_rate(clk, rate_ideal); + else + rate_actual = clk_get_rate(clk); arate = rate_actual / 64; arate /= div; @@ -1072,7 +1080,8 @@ static int fsl_spdif_probe_txclk(struct fsl_spdif_priv *spdif_priv, if (!clk_get_rate(clk)) continue; - ret = fsl_spdif_txclk_caldiv(spdif_priv, clk, savesub, index); + ret = fsl_spdif_txclk_caldiv(spdif_priv, clk, savesub, index, + i == STC_TXCLK_SPDIF_ROOT); if (savesub == ret) continue; diff --git a/sound/soc/fsl/fsl_spdif.h b/sound/soc/fsl/fsl_spdif.h index b126679..18bf8cd 100644 --- a/sound/soc/fsl/fsl_spdif.h +++ b/sound/soc/fsl/fsl_spdif.h @@ -157,6 +157,8 @@ enum spdif_gainsel { #define STC_TXCLK_DIV(x) ((((x) - 1) << STC_TXCLK_DIV_OFFSET) & STC_TXCLK_DIV_MASK) #define STC_TXCLK_SRC_MAX 8 +#define STC_TXCLK_SPDIF_ROOT 1 + /* SPDIF tx rate */ enum spdif_txrate { SPDIF_TXRATE_32000 = 0, |
