[PATCH 1/2] ASoC: dt-bindings: ak4458: Add power supply property
AVDD-supply is for Analog power supply DVDD-supply is for Digital power supply
Signed-off-by: Shengjiu Wang shengjiu.wang@nxp.com --- Documentation/devicetree/bindings/sound/ak4458.txt | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/Documentation/devicetree/bindings/sound/ak4458.txt b/Documentation/devicetree/bindings/sound/ak4458.txt index e5820235e0d5..8f6c84f21468 100644 --- a/Documentation/devicetree/bindings/sound/ak4458.txt +++ b/Documentation/devicetree/bindings/sound/ak4458.txt @@ -10,6 +10,8 @@ Required properties: Optional properties: - reset-gpios: A GPIO specifier for the power down & reset pin - mute-gpios: A GPIO specifier for the soft mute pin +- AVDD-supply: Analog power supply +- DVDD-supply: Digital power supply
Example:
"AVDD" is for analog power supply, "DVDD" is for digital power supply, they can improve the power management.
As the regulator is enabled in pm runtime resume, which is behind the component driver probe, so accessing registers in component driver probe will fail. Fix this issue by enabling regcache_cache_only after pm_runtime_enable.
Signed-off-by: Shengjiu Wang shengjiu.wang@nxp.com --- sound/soc/codecs/ak4458.c | 31 ++++++++++++++++++++++++++++++- 1 file changed, 30 insertions(+), 1 deletion(-)
diff --git a/sound/soc/codecs/ak4458.c b/sound/soc/codecs/ak4458.c index cbe3c782e0ca..763e6839428f 100644 --- a/sound/soc/codecs/ak4458.c +++ b/sound/soc/codecs/ak4458.c @@ -12,6 +12,7 @@ #include <linux/of_device.h> #include <linux/of_gpio.h> #include <linux/pm_runtime.h> +#include <linux/regulator/consumer.h> #include <linux/slab.h> #include <sound/initval.h> #include <sound/pcm_params.h> @@ -21,6 +22,12 @@
#include "ak4458.h"
+#define AK4458_NUM_SUPPLIES 2 +static const char *ak4458_supply_names[AK4458_NUM_SUPPLIES] = { + "DVDD", + "AVDD", +}; + struct ak4458_drvdata { struct snd_soc_dai_driver *dai_drv; const struct snd_soc_component_driver *comp_drv; @@ -28,6 +35,7 @@ struct ak4458_drvdata {
/* AK4458 Codec Private Data */ struct ak4458_priv { + struct regulator_bulk_data supplies[AK4458_NUM_SUPPLIES]; struct device *dev; struct regmap *regmap; struct gpio_desc *reset_gpiod; @@ -587,12 +595,22 @@ static int __maybe_unused ak4458_runtime_suspend(struct device *dev) if (ak4458->mute_gpiod) gpiod_set_value_cansleep(ak4458->mute_gpiod, 0);
+ regulator_bulk_disable(ARRAY_SIZE(ak4458->supplies), + ak4458->supplies); return 0; }
static int __maybe_unused ak4458_runtime_resume(struct device *dev) { struct ak4458_priv *ak4458 = dev_get_drvdata(dev); + int ret; + + ret = regulator_bulk_enable(ARRAY_SIZE(ak4458->supplies), + ak4458->supplies); + if (ret != 0) { + dev_err(ak4458->dev, "Failed to enable supplies: %d\n", ret); + return ret; + }
if (ak4458->mute_gpiod) gpiod_set_value_cansleep(ak4458->mute_gpiod, 1); @@ -667,7 +685,7 @@ static int ak4458_i2c_probe(struct i2c_client *i2c) { struct ak4458_priv *ak4458; const struct ak4458_drvdata *drvdata; - int ret; + int ret, i;
ak4458 = devm_kzalloc(&i2c->dev, sizeof(*ak4458), GFP_KERNEL); if (!ak4458) @@ -692,6 +710,16 @@ static int ak4458_i2c_probe(struct i2c_client *i2c) if (IS_ERR(ak4458->mute_gpiod)) return PTR_ERR(ak4458->mute_gpiod);
+ for (i = 0; i < ARRAY_SIZE(ak4458->supplies); i++) + ak4458->supplies[i].supply = ak4458_supply_names[i]; + + ret = devm_regulator_bulk_get(ak4458->dev, ARRAY_SIZE(ak4458->supplies), + ak4458->supplies); + if (ret != 0) { + dev_err(ak4458->dev, "Failed to request supplies: %d\n", ret); + return ret; + } + ret = devm_snd_soc_register_component(ak4458->dev, drvdata->comp_drv, drvdata->dai_drv, 1); if (ret < 0) { @@ -700,6 +728,7 @@ static int ak4458_i2c_probe(struct i2c_client *i2c) }
pm_runtime_enable(&i2c->dev); + regcache_cache_only(ak4458->regmap, true);
return 0; }
On Fri, 14 Aug 2020 17:32:40 +0800, Shengjiu Wang wrote:
AVDD-supply is for Analog power supply DVDD-supply is for Digital power supply
Applied to
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next
Thanks!
[1/2] ASoC: dt-bindings: ak4458: Add power supply property commit: 617a156f2ebae841bcd64ee5a21d0e12b5d733ab [2/2] ASoC: ak4458: Add regulator support commit: 7e3096e8f823682c20e033113ec32dd590364774
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
participants (2)
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Mark Brown
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Shengjiu Wang