diff options
| -rw-r--r-- | sound/soc/tegra/tegra30_i2s.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/sound/soc/tegra/tegra30_i2s.c b/sound/soc/tegra/tegra30_i2s.c index 48a09c9d60be..8f8924060d9d 100644 --- a/sound/soc/tegra/tegra30_i2s.c +++ b/sound/soc/tegra/tegra30_i2s.c @@ -265,6 +265,34 @@ static int tegra30_i2s_trigger(struct snd_pcm_substream *substream, int cmd, return 0; } +static int tegra30_i2s_set_tdm(struct snd_soc_dai *dai, + unsigned int tx_mask, unsigned int rx_mask, + int slots, int slot_width) +{ + struct tegra30_i2s *i2s = snd_soc_dai_get_drvdata(dai); + unsigned int mask, val; + + dev_dbg(dai->dev, "%s: txmask=0x%08x rxmask=0x%08x slots=%d width=%d\n", + __func__, tx_mask, rx_mask, slots, slot_width); + + mask = TEGRA30_I2S_SLOT_CTRL_TOTAL_SLOTS_MASK | + TEGRA30_I2S_SLOT_CTRL_RX_SLOT_ENABLES_MASK | + TEGRA30_I2S_SLOT_CTRL_TX_SLOT_ENABLES_MASK; + + val = (tx_mask << TEGRA30_I2S_SLOT_CTRL_TX_SLOT_ENABLES_SHIFT) | + (rx_mask << TEGRA30_I2S_SLOT_CTRL_RX_SLOT_ENABLES_SHIFT) | + ((slots - 1) << TEGRA30_I2S_SLOT_CTRL_TOTAL_SLOTS_SHIFT); + + pm_runtime_get_sync(dai->dev); + regmap_update_bits(i2s->regmap, TEGRA30_I2S_SLOT_CTRL, mask, val); + /* set the fsync width to minimum of 1 clock width */ + regmap_update_bits(i2s->regmap, TEGRA30_I2S_CH_CTRL, + TEGRA30_I2S_CH_CTRL_FSYNC_WIDTH_MASK, 0x0); + pm_runtime_put(dai->dev); + + return 0; +} + static int tegra30_i2s_probe(struct snd_soc_dai *dai) { struct tegra30_i2s *i2s = snd_soc_dai_get_drvdata(dai); @@ -279,6 +307,7 @@ static const struct snd_soc_dai_ops tegra30_i2s_dai_ops = { .set_fmt = tegra30_i2s_set_fmt, .hw_params = tegra30_i2s_hw_params, .trigger = tegra30_i2s_trigger, + .set_tdm_slot = tegra30_i2s_set_tdm, }; static const struct snd_soc_dai_driver tegra30_i2s_dai_template = { |