Output of pcm3060 codec may be configured as single-ended or differential

Signed-off-by: Kirill Marinushkin kmarinushkin@birdec.tech Cc: devicetree@vger.kernel.org --- Documentation/devicetree/bindings/sound/pcm3060.txt | 6 ++++++ 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/pcm3060.txt b/Documentation/devicetree/bindings/sound/pcm3060.txt index 90fcb8523099..97de66932d44 100644 --- a/Documentation/devicetree/bindings/sound/pcm3060.txt +++ b/Documentation/devicetree/bindings/sound/pcm3060.txt @@ -9,9 +9,15 @@ Required properties: - reg : the I2C address of the device for I2C, the chip select number for SPI.

+Optional properties: + +- ti,out-single-ended: "true" if output is single-ended; + "false" or not specified if output is differential. + Examples:

pcm3060: pcm3060@46 { compatible = "ti,pcm3060"; reg = <0x46>; + ti,out-single-ended = "true"; };

The patch

ASoC: pcm3060: Add DT property for single-ended output

has been applied to the asoc tree at

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

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

From b1c0000bde8fb287f4fd3493ca4167efee344c3e Mon Sep 17 00:00:00 2001

From: Kirill Marinushkin kmarinushkin@birdec.tech Date: Mon, 12 Nov 2018 08:08:33 +0100 Subject: [PATCH] ASoC: pcm3060: Add DT property for single-ended output

DAC output may be differential (default) or single-ended.

Signed-off-by: Kirill Marinushkin kmarinushkin@birdec.tech Signed-off-by: Mark Brown broonie@kernel.org --- sound/soc/codecs/pcm3060.c | 14 ++++++++++++++ sound/soc/codecs/pcm3060.h | 1 + 2 files changed, 15 insertions(+)

diff --git a/sound/soc/codecs/pcm3060.c b/sound/soc/codecs/pcm3060.c index 771b46e1974b..1dd851a7b43b 100644 --- a/sound/soc/codecs/pcm3060.c +++ b/sound/soc/codecs/pcm3060.c @@ -270,9 +270,23 @@ EXPORT_SYMBOL(pcm3060_regmap);

/* device */

+static void pcm3060_parse_dt(const struct device_node *np, + struct pcm3060_priv *priv) +{ + priv->out_se = of_property_read_bool(np, "ti,out-single-ended"); +} + int pcm3060_probe(struct device *dev) { int rc; + struct pcm3060_priv *priv = dev_get_drvdata(dev); + + if (dev->of_node) + pcm3060_parse_dt(dev->of_node, priv); + + if (priv->out_se) + regmap_update_bits(priv->regmap, PCM3060_REG64, + PCM3060_REG_SE, PCM3060_REG_SE);

rc = devm_snd_soc_register_component(dev, &pcm3060_soc_comp_driver, pcm3060_dai, diff --git a/sound/soc/codecs/pcm3060.h b/sound/soc/codecs/pcm3060.h index fd89a68aa8a7..c895cf40ee10 100644 --- a/sound/soc/codecs/pcm3060.h +++ b/sound/soc/codecs/pcm3060.h @@ -25,6 +25,7 @@ struct pcm3060_priv_dai { struct pcm3060_priv { struct regmap *regmap; struct pcm3060_priv_dai dai[PCM3060_DAI_IDS_NUM]; + u8 out_se: 1; };

int pcm3060_probe(struct device *dev);

In the initial commit [1], I added differential output of the codec as separate `+` and `-` widgets:

OUTL+ OUTR+ OUTL- OUTR-

Later, in the commit [2], I added a device tree property to configure the output as single-ended or differential. Having this property, the `+` and `-` separation in widgets seems for me confusing. There are no functional benefits in such separation, so I find reasonable to get rid of it:

OUTL OUTR

The new naming is more friendly for sound cards, and is better aligned with other codec drivers in kernel.

Renaming the output widgets now should not be a problem from the backwards- compatibility perspective, as the driver for PCM3060 is added into the mainline very recently, and did not yet appear in any releases.

[1] commit 6ee47d4a8dac ("ASoC: pcm3060: Add codec driver") [2] commit a78c62de00d5 ("ASoC: pcm3060: Add DT property for single-ended output")

Signed-off-by: Kirill Marinushkin kmarinushkin@birdec.tech --- sound/soc/codecs/pcm3060.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-)

diff --git a/sound/soc/codecs/pcm3060.c b/sound/soc/codecs/pcm3060.c index 5f479aa61097..1dd851a7b43b 100644 --- a/sound/soc/codecs/pcm3060.c +++ b/sound/soc/codecs/pcm3060.c @@ -198,20 +198,16 @@ static const struct snd_kcontrol_new pcm3060_dapm_controls[] = { };

static const struct snd_soc_dapm_widget pcm3060_dapm_widgets[] = { - SND_SOC_DAPM_OUTPUT("OUTL+"), - SND_SOC_DAPM_OUTPUT("OUTR+"), - SND_SOC_DAPM_OUTPUT("OUTL-"), - SND_SOC_DAPM_OUTPUT("OUTR-"), + SND_SOC_DAPM_OUTPUT("OUTL"), + SND_SOC_DAPM_OUTPUT("OUTR"),

SND_SOC_DAPM_INPUT("INL"), SND_SOC_DAPM_INPUT("INR"), };

static const struct snd_soc_dapm_route pcm3060_dapm_map[] = { - { "OUTL+", NULL, "Playback" }, - { "OUTR+", NULL, "Playback" }, - { "OUTL-", NULL, "Playback" }, - { "OUTR-", NULL, "Playback" }, + { "OUTL", NULL, "Playback" }, + { "OUTR", NULL, "Playback" },

{ "Capture", NULL, "INL" }, { "Capture", NULL, "INR" },