diff options
Diffstat (limited to 'sound/soc/codecs/da7213.c')
| -rw-r--r-- | sound/soc/codecs/da7213.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/sound/soc/codecs/da7213.c b/sound/soc/codecs/da7213.c index 701bd6204747..680d11116ccf 100644 --- a/sound/soc/codecs/da7213.c +++ b/sound/soc/codecs/da7213.c @@ -734,6 +734,9 @@ static int da7213_dai_event(struct snd_soc_dapm_widget *w, { struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm); struct da7213_priv *da7213 = snd_soc_codec_get_drvdata(codec); + u8 pll_ctrl, pll_status; + int i = 0; + bool srm_lock = false; switch (event) { case SND_SOC_DAPM_PRE_PMU: @@ -742,6 +745,26 @@ static int da7213_dai_event(struct snd_soc_dapm_widget *w, snd_soc_update_bits(codec, DA7213_DAI_CLK_MODE, DA7213_DAI_CLK_EN_MASK, DA7213_DAI_CLK_EN_MASK); + + /* Slave mode, if SRM not enabled no need for status checks */ + pll_ctrl = snd_soc_read(codec, DA7213_PLL_CTRL); + if (!(pll_ctrl & DA7213_PLL_SRM_EN)) + return 0; + + /* Check SRM has locked */ + do { + pll_status = snd_soc_read(codec, DA7213_PLL_STATUS); + if (pll_status & DA7219_PLL_SRM_LOCK) { + srm_lock = true; + } else { + ++i; + msleep(50); + } + } while ((i < DA7213_SRM_CHECK_RETRIES) & (!srm_lock)); + + if (!srm_lock) + dev_warn(codec->dev, "SRM failed to lock\n"); + return 0; case SND_SOC_DAPM_POST_PMD: /* Disable DAI clks if in master mode */ |