ASoC: mediatek: mt8186: remove redundant assignments to variable tdm_con

There are two occurrences where variable tdm_con is being initialized
to zero and the next statement re-assigns tdm_con to a new value. The
initializations are redundant and can be removed.

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20231023151704.670240-1-colin.i.king@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: mediatek: mt8186: remove unnecessary judgments

The afe_priv->dai_priv[] is allocated when platform driver probe(), if it
failed, the ASoC platform driver probe() will return fail first.
Therefore, this is excessive judgment, and the condition will never be
established.

Bug report: https://www.spinics.net/lists/alsa-devel/msg145609.html

This is a semi-automatic email about new static checker warnings.

The patch ae92dcbee8b6: "ASoC: mediatek: mt8186: support tdm in
platform driver" from May 23, 2022, leads to the following Smatch
complaint:

sound/soc/mediatek/mt8186/mt8186-dai-tdm.c:424 mtk_dai_tdm_hw_params()
warn: variable dereferenced before check 'tdm_priv' (see line 406)

sound/soc/mediatek/mt8186/mt8186-dai-tdm.c
405 struct mtk_afe_tdm_priv *tdm_priv = afe_priv->dai_priv[tdm_id];
406 unsigned int tdm_mode = tdm_priv->tdm_mode;
^^^^^^^^^^^^^^^^^^^
Lot's of dereferences

407 unsigned int data_mode = tdm_priv->data_mode;
408 unsigned int rate = params_rate(params);
409 unsigned int channels = params_channels(params);
410 snd_pcm_format_t format = params_format(params);
411 unsigned int bit_width =
412 snd_pcm_format_physical_width(format);
413 unsigned int tdm_channels = (data_mode == TDM_DATA_ONE_PIN) ?
414 get_tdm_ch_per_sdata(tdm_mode, channels) : 2;
415 unsigned int lrck_width =
416 get_tdm_lrck_width(format, tdm_mode);
417 unsigned int tdm_con = 0;
418 bool slave_mode = tdm_priv->slave_mode;
419 bool lrck_inv = tdm_priv->lck_invert;
420 bool bck_inv = tdm_priv->bck_invert;
421 unsigned int tran_rate;
422 unsigned int tran_relatch_rate;
423
424 if (!tdm_priv) {
^^^^^^^^^
Checked too late

425 dev_err(afe->dev, "%s(), tdm_priv == NULL", __func__);
426 return -EINVAL;

Fixes: ae92dcbee8b6 ("ASoC: mediatek: mt8186: support tdm in platform driver")
Signed-off-by: Jiaxin Yu <jiaxin.yu@mediatek.com>
Link: https://lore.kernel.org/r/20220726154220.28141-1-jiaxin.yu@mediatek.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: mediatek: mt8186: Use new direct clock defines

Update this driver to the new direct clock producer/consumer defines. It
appears this driver was added with the inversion taken account of but
still uses the CODEC defines so no inversion of the producer/consumer
is necessary.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20220613161552.481337-2-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>

ASoC: mediatek: mt8186: support tdm in platform driver

Add mt8186 tdm dai driver.

Signed-off-by: Jiaxin Yu <jiaxin.yu@mediatek.com>
Link: https://lore.kernel.org/r/20220523132858.22166-11-jiaxin.yu@mediatek.com
Signed-off-by: Mark Brown <broonie@kernel.org>