From: Jack Yu jack.yu@realtek.com

Add condition to prevent SoC providing bclk in ratio of 50 times of sample rate.

Signed-off-by: Jack Yu jack.yu@realtek.com --- sound/soc/codecs/rt1015.c | 27 +++++++++++++++++++++++++++ sound/soc/codecs/rt1015.h | 1 + 2 files changed, 28 insertions(+)

diff --git a/sound/soc/codecs/rt1015.c b/sound/soc/codecs/rt1015.c index bb310bc7febd..5eb07a430ae3 100644 --- a/sound/soc/codecs/rt1015.c +++ b/sound/soc/codecs/rt1015.c @@ -780,6 +780,14 @@ static int rt1015_set_component_pll(struct snd_soc_component *component, freq_out == rt1015->pll_out) return 0;

+ if (source == RT1015_PLL_S_BCLK) { + if (rt1015->bclk_ratio == 0) { + dev_err(component->dev, + "Can not support bclk ratio as 0.\n"); + return -EINVAL; + } + } + switch (source) { case RT1015_PLL_S_MCLK: snd_soc_component_update_bits(component, RT1015_CLK2, @@ -819,12 +827,30 @@ static int rt1015_set_component_pll(struct snd_soc_component *component, return 0; }

+static int rt1015_set_bclk_ratio(struct snd_soc_dai *dai, unsigned int ratio) +{ + struct snd_soc_component *component = dai->component; + struct rt1015_priv *rt1015 = snd_soc_component_get_drvdata(component); + + dev_dbg(component->dev, "%s ratio=%d\n", __func__, ratio); + + rt1015->bclk_ratio = ratio; + + if (ratio == 50) { + dev_dbg(component->dev, "Unsupport bclk ratio\n"); + return -EINVAL; + } + + return 0; +} + static int rt1015_probe(struct snd_soc_component *component) { struct rt1015_priv *rt1015 = snd_soc_component_get_drvdata(component);

rt1015->component = component; + rt1015->bclk_ratio = 0; snd_soc_component_write(component, RT1015_BAT_RPO_STEP1, 0x061c);

return 0; @@ -844,6 +870,7 @@ static void rt1015_remove(struct snd_soc_component *component) static struct snd_soc_dai_ops rt1015_aif_dai_ops = { .hw_params = rt1015_hw_params, .set_fmt = rt1015_set_dai_fmt, + .set_bclk_ratio = rt1015_set_bclk_ratio, };

static struct snd_soc_dai_driver rt1015_dai[] = { diff --git a/sound/soc/codecs/rt1015.h b/sound/soc/codecs/rt1015.h index ef3745a4faae..6fbe802082c4 100644 --- a/sound/soc/codecs/rt1015.h +++ b/sound/soc/codecs/rt1015.h @@ -362,6 +362,7 @@ struct rt1015_priv { int sysclk_src; int lrck; int bclk; + int bclk_ratio; int id; int pll_src; int pll_in;