[PATCH 1/2] ASoC: codec: tlv320aic32x4: fix missing aic32x4_disable_regulators() in error path

[PATCH 1/2] ASoC: codec: tlv320aic32x4: fix missing aic32x4_disable_regulators() in error path

[Matthias Schiffer]

The regulators need to be disabled in the aic32x4_register_clocks()
failure case as well.

Fixes: 9d4befff5a95 ("ASoC: codec: tlv3204: Moving GPIO reset and add ADC
reset")
Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com>
---
 sound/soc/codecs/tlv320aic32x4.c | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/sound/soc/codecs/tlv320aic32x4.c b/sound/soc/codecs/tlv320aic32x4.c
index 8dcea566b375..a45fb496082c 100644
--- a/sound/soc/codecs/tlv320aic32x4.c
+++ b/sound/soc/codecs/tlv320aic32x4.c
@@ -1230,8 +1230,7 @@ int aic32x4_probe(struct device *dev, struct regmap *regmap)
 			&soc_component_dev_aic32x4, &aic32x4_dai, 1);
 	if (ret) {
 		dev_err(dev, "Failed to register component\n");
-		aic32x4_disable_regulators(aic32x4);
-		return ret;
+		goto err_disable_regulators;
 	}
 
 	if (gpio_is_valid(aic32x4->rstn_gpio)) {
@@ -1242,9 +1241,14 @@ int aic32x4_probe(struct device *dev, struct regmap *regmap)
 
 	ret = aic32x4_register_clocks(dev, aic32x4->mclk_name);
 	if (ret)
-		return ret;
+		goto err_disable_regulators;
 
 	return 0;
+
+err_disable_regulators:
+	aic32x4_disable_regulators(aic32x4);
+
+	return ret;
 }
 EXPORT_SYMBOL(aic32x4_probe);
 
-- 
2.17.1

[PATCH 2/2] ASoC: codec: tlv320aic32x4: do software reset before clock registration

[Matthias Schiffer]

To avoid the actual PLL settings to differ from the state expected by
the clock driver, the codec should only be fully reset before the clocks
are registered. But we also need to ensure that the software reset
happens at all before clock registration, as not all boards have a reset
GPIO.

Move the software reset from aic32x4_component_probe() to
aic32x4_probe() and reorder the reset and registration sequence:

1. Reset via GPIO (if available)
2. Reset via software
3. Register component
4. Register clocks

Note that aic32x4_component_probe() is only called after aic32x4_probe()
has finished, so the reset in aic32x4_component_probe() was happening too
late.

Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com>
---
 sound/soc/codecs/tlv320aic32x4.c | 18 ++++++++++--------
 1 file changed, 10 insertions(+), 8 deletions(-)

diff --git a/sound/soc/codecs/tlv320aic32x4.c b/sound/soc/codecs/tlv320aic32x4.c
index a45fb496082c..470dc0ef0359 100644
--- a/sound/soc/codecs/tlv320aic32x4.c
+++ b/sound/soc/codecs/tlv320aic32x4.c
@@ -981,8 +981,6 @@ static int aic32x4_component_probe(struct snd_soc_component *component)
 	if (ret)
 		return ret;
 
-	snd_soc_component_write(component, AIC32X4_RESET, 0x01);
-
 	if (aic32x4->setup)
 		aic32x4_setup_gpios(component);
 
@@ -1226,6 +1224,16 @@ int aic32x4_probe(struct device *dev, struct regmap *regmap)
 		return ret;
 	}
 
+	if (gpio_is_valid(aic32x4->rstn_gpio)) {
+		ndelay(10);
+		gpio_set_value_cansleep(aic32x4->rstn_gpio, 1);
+		mdelay(1);
+	}
+
+	ret = regmap_write(regmap, AIC32X4_RESET, 0x01);
+	if (ret)
+		goto err_disable_regulators;
+
 	ret = devm_snd_soc_register_component(dev,
 			&soc_component_dev_aic32x4, &aic32x4_dai, 1);
 	if (ret) {
@@ -1233,12 +1241,6 @@ int aic32x4_probe(struct device *dev, struct regmap *regmap)
 		goto err_disable_regulators;
 	}
 
-	if (gpio_is_valid(aic32x4->rstn_gpio)) {
-		ndelay(10);
-		gpio_set_value_cansleep(aic32x4->rstn_gpio, 1);
-		mdelay(1);
-	}
-
 	ret = aic32x4_register_clocks(dev, aic32x4->mclk_name);
 	if (ret)
 		goto err_disable_regulators;
-- 
2.17.1

Re: [PATCH 1/2] ASoC: codec: tlv320aic32x4: fix missing aic32x4_disable_regulators() in error path

[Mark Brown]

On Wed, 2 Sep 2020 15:30:42 +0200, Matthias Schiffer wrote:
> The regulators need to be disabled in the aic32x4_register_clocks()
> failure case as well.

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next

Thanks!

[1/2] ASoC: codec: tlv320aic32x4: fix missing aic32x4_disable_regulators() in error path
      commit: 251e5c8694db01cd10828e39c07f90d958d7b303
[2/2] ASoC: codec: tlv320aic32x4: do software reset before clock registration
      commit: df44bc16e616809172cda90fd816596ded4ea219

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark