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Date: Thu, 22 Jun 2023 17:20:36 +0300
From: Maxim Kochetkov <fido_max@...ox.ru>
To: alsa-devel@...a-project.org
Cc: Maxim Kochetkov <fido_max@...ox.ru>,
Liam Girdwood <lgirdwood@...il.com>,
Mark Brown <broonie@...nel.org>,
Jaroslav Kysela <perex@...ex.cz>,
Takashi Iwai <tiwai@...e.com>,
Adrien Grassein <adrien.grassein@...il.com>,
Corey Minyard <cminyard@...sta.com>,
Uwe Kleine-König
<u.kleine-koenig@...gutronix.de>,
Jeremy Kerr <jk@...econstruct.com.au>,
Charles Keepax <ckeepax@...nsource.cirrus.com>,
Claudiu Beznea <claudiu.beznea@...rochip.com>,
Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
linux-kernel@...r.kernel.org
Subject: [PATCH v2 1/1] ASoC: codecs: max98090: Allow dsp_a mode
TDM mode for max98090 is dsp_a compatible with such limitations:
1) Up to four timeslots supported.
2) Only 16 bits timeslots supported.
3) Only 2 active timeslots (L/R) supported.
We want to setup TDM mode only when dsp_a mode is selected. So move
M98090_REG_TDM_FORMAT/M98090_REG_TDM_CONTROL registers setup from
max98090_set_tdm_slot() to the max98090_dai_set_fmt(). Also extend
max98090_set_tdm_slot() with all TDM limitations check.
Signed-off-by: Maxim Kochetkov <fido_max@...ox.ru>
---
sound/soc/codecs/max98090.c | 53 ++++++++++++++++++++-----------------
sound/soc/codecs/max98090.h | 3 ++-
2 files changed, 30 insertions(+), 26 deletions(-)
diff --git a/sound/soc/codecs/max98090.c b/sound/soc/codecs/max98090.c
index 7bc463910d4f..2adf744c6526 100644
--- a/sound/soc/codecs/max98090.c
+++ b/sound/soc/codecs/max98090.c
@@ -1581,7 +1581,7 @@ static int max98090_dai_set_fmt(struct snd_soc_dai *codec_dai,
struct snd_soc_component *component = codec_dai->component;
struct max98090_priv *max98090 = snd_soc_component_get_drvdata(component);
struct max98090_cdata *cdata;
- u8 regval;
+ u8 regval, tdm_regval;
max98090->dai_fmt = fmt;
cdata = &max98090->dai[0];
@@ -1590,6 +1590,7 @@ static int max98090_dai_set_fmt(struct snd_soc_dai *codec_dai,
cdata->fmt = fmt;
regval = 0;
+ tdm_regval = 0;
switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
case SND_SOC_DAIFMT_CBC_CFC:
/* Set to consumer mode PLL - MAS mode off */
@@ -1635,7 +1636,8 @@ static int max98090_dai_set_fmt(struct snd_soc_dai *codec_dai,
regval |= M98090_RJ_MASK;
break;
case SND_SOC_DAIFMT_DSP_A:
- /* Not supported mode */
+ tdm_regval |= M98090_TDM_MASK;
+ break;
default:
dev_err(component->dev, "DAI format unsupported");
return -EINVAL;
@@ -1664,11 +1666,20 @@ static int max98090_dai_set_fmt(struct snd_soc_dai *codec_dai,
* seen for the case of TDM mode. The remaining cases have
* normal logic.
*/
- if (max98090->tdm_slots > 1)
+ if (tdm_regval)
regval ^= M98090_BCI_MASK;
snd_soc_component_write(component,
M98090_REG_INTERFACE_FORMAT, regval);
+
+ regval = 0;
+ if (tdm_regval)
+ regval = max98090->tdm_lslot << M98090_TDM_SLOTL_SHIFT |
+ max98090->tdm_rslot << M98090_TDM_SLOTR_SHIFT |
+ 0 << M98090_TDM_SLOTDLY_SHIFT;
+
+ snd_soc_component_write(component, M98090_REG_TDM_FORMAT, regval);
+ snd_soc_component_write(component, M98090_REG_TDM_CONTROL, tdm_regval);
}
return 0;
@@ -1679,33 +1690,22 @@ static int max98090_set_tdm_slot(struct snd_soc_dai *codec_dai,
{
struct snd_soc_component *component = codec_dai->component;
struct max98090_priv *max98090 = snd_soc_component_get_drvdata(component);
- struct max98090_cdata *cdata;
- cdata = &max98090->dai[0];
if (slots < 0 || slots > 4)
return -EINVAL;
- max98090->tdm_slots = slots;
- max98090->tdm_width = slot_width;
-
- if (max98090->tdm_slots > 1) {
- /* SLOTL SLOTR SLOTDLY */
- snd_soc_component_write(component, M98090_REG_TDM_FORMAT,
- 0 << M98090_TDM_SLOTL_SHIFT |
- 1 << M98090_TDM_SLOTR_SHIFT |
- 0 << M98090_TDM_SLOTDLY_SHIFT);
-
- /* FSW TDM */
- snd_soc_component_update_bits(component, M98090_REG_TDM_CONTROL,
- M98090_TDM_MASK,
- M98090_TDM_MASK);
- }
+ if (slot_width != 16)
+ return -EINVAL;
- /*
- * Normally advisable to set TDM first, but this permits either order
- */
- cdata->fmt = 0;
- max98090_dai_set_fmt(codec_dai, max98090->dai_fmt);
+ if (rx_mask != tx_mask)
+ return -EINVAL;
+
+ if (!rx_mask)
+ return -EINVAL;
+
+ max98090->tdm_slots = slots;
+ max98090->tdm_lslot = ffs(rx_mask) - 1;
+ max98090->tdm_rslot = fls(rx_mask) - 1;
return 0;
}
@@ -2408,6 +2408,9 @@ static int max98090_probe(struct snd_soc_component *component)
max98090->pa1en = 0;
max98090->pa2en = 0;
+ max98090->tdm_lslot = 0;
+ max98090->tdm_rslot = 1;
+
ret = snd_soc_component_read(component, M98090_REG_REVISION_ID);
if (ret < 0) {
dev_err(component->dev, "Failed to read device revision: %d\n",
diff --git a/sound/soc/codecs/max98090.h b/sound/soc/codecs/max98090.h
index a197114b0dad..6ce8dd176e48 100644
--- a/sound/soc/codecs/max98090.h
+++ b/sound/soc/codecs/max98090.h
@@ -1533,7 +1533,8 @@ struct max98090_priv {
struct snd_soc_jack *jack;
unsigned int dai_fmt;
int tdm_slots;
- int tdm_width;
+ int tdm_lslot;
+ int tdm_rslot;
u8 lin_state;
unsigned int pa1en;
unsigned int pa2en;
--
2.40.1
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