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ASoC: tegra: add a TDM configuration callback 

Add a callback to configure TDM settings for the Tegra30 I2S ASoC 'platform'
driver.

Signed-off-by: Edward Cragg <edward.cragg@codethink.co.uk>
[ben.dooks@codethink.co.uk: merge fix for power management]
[ben.dooks@codethink.co.uk: add review change for fsync of 1 clock]
Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Link: https://lore.kernel.org/r/20191018154833.7560-2-ben.dooks@codethink.co.uk
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Edward Cragg 2019-10-18 16:48:27 +01:00 committed by Mark Brown
parent 16c3323532
commit 0793256368
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 29 additions and 0 deletions
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29
sound/soc/tegra/tegra30_i2s.c
View File

@ -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 = {