[alsa-devel] Applied "ASoC: Intel: bytcr_rt5651: Add support for jack-detect using an external GPIO" to the asoc tree

[Mark Brown]

The patch

   ASoC: Intel: bytcr_rt5651: Add support for jack-detect using an external GPIO

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 90768eaf064041937ef4d6ca95c7e86774cd34a4 Mon Sep 17 00:00:00 2001
From: Hans de Goede <hdegoede at redhat.com>
Date: Sun, 30 Dec 2018 00:00:24 +0100
Subject: [PATCH] ASoC: Intel: bytcr_rt5651: Add support for jack-detect using
 an external GPIO

Some board designs hook the jack-detect up to an external GPIO, rather
then to one of the codec pins, add support for this.

Acked-by: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
Signed-off-by: Hans de Goede <hdegoede at redhat.com>
Signed-off-by: Mark Brown <broonie at kernel.org>
---
 sound/soc/intel/boards/bytcr_rt5651.c | 43 ++++++++++++++++++++++-----
 1 file changed, 36 insertions(+), 7 deletions(-)

diff --git a/sound/soc/intel/boards/bytcr_rt5651.c b/sound/soc/intel/boards/bytcr_rt5651.c
index 6d8ef9dd106e..9a2ee9080897 100644
--- a/sound/soc/intel/boards/bytcr_rt5651.c
+++ b/sound/soc/intel/boards/bytcr_rt5651.c
@@ -91,6 +91,7 @@ enum {
 struct byt_rt5651_private {
 	struct clk *mclk;
 	struct gpio_desc *ext_amp_gpio;
+	struct gpio_desc *hp_detect;
 	struct snd_soc_jack jack;
 };
 
@@ -499,6 +500,7 @@ static int byt_rt5651_init(struct snd_soc_pcm_runtime *runtime)
 	struct byt_rt5651_private *priv = snd_soc_card_get_drvdata(card);
 	const struct snd_soc_dapm_route *custom_map;
 	int num_routes;
+	int report;
 	int ret;
 
 	card->dapm.idle_bias_off = true;
@@ -582,20 +584,27 @@ static int byt_rt5651_init(struct snd_soc_pcm_runtime *runtime)
 			dev_err(card->dev, "unable to set MCLK rate\n");
 	}
 
-	if (BYT_RT5651_JDSRC(byt_rt5651_quirk)) {
+	report = 0;
+	if (BYT_RT5651_JDSRC(byt_rt5651_quirk))
+		report = SND_JACK_HEADSET | SND_JACK_BTN_0;
+	else if (priv->hp_detect)
+		report = SND_JACK_HEADSET;
+
+	if (report) {
 		ret = snd_soc_card_jack_new(runtime->card, "Headset",
-				    SND_JACK_HEADSET | SND_JACK_BTN_0,
-				    &priv->jack, bytcr_jack_pins,
+				    report, &priv->jack, bytcr_jack_pins,
 				    ARRAY_SIZE(bytcr_jack_pins));
 		if (ret) {
 			dev_err(runtime->dev, "jack creation failed %d\n", ret);
 			return ret;
 		}
 
-		snd_jack_set_key(priv->jack.jack, SND_JACK_BTN_0,
-				 KEY_PLAYPAUSE);
+		if (report & SND_JACK_BTN_0)
+			snd_jack_set_key(priv->jack.jack, SND_JACK_BTN_0,
+					 KEY_PLAYPAUSE);
 
-		ret = snd_soc_component_set_jack(codec, &priv->jack, NULL);
+		ret = snd_soc_component_set_jack(codec, &priv->jack,
+						 priv->hp_detect);
 		if (ret)
 			return ret;
 	}
@@ -767,7 +776,8 @@ static int byt_rt5651_resume(struct snd_soc_card *card)
 	for_each_card_components(card, component) {
 		if (!strcmp(component->name, byt_rt5651_codec_name)) {
 			dev_dbg(component->dev, "re-enabling jack detect after resume\n");
-			snd_soc_component_set_jack(component, &priv->jack, NULL);
+			snd_soc_component_set_jack(component, &priv->jack,
+						   priv->hp_detect);
 			break;
 		}
 	}
@@ -1012,6 +1022,25 @@ static int snd_byt_rt5651_mc_probe(struct platform_device *pdev)
 				return ret_val;
 			}
 		}
+		priv->hp_detect = devm_fwnode_get_index_gpiod_from_child(
+						&pdev->dev, "hp-detect", 0,
+						codec_dev->fwnode,
+						GPIOD_IN, "hp-detect");
+		if (IS_ERR(priv->hp_detect)) {
+			ret_val = PTR_ERR(priv->hp_detect);
+			switch (ret_val) {
+			case -ENOENT:
+				priv->hp_detect = NULL;
+				break;
+			default:
+				dev_err(&pdev->dev, "Failed to get hp-detect GPIO: %d\n",
+					ret_val);
+				/* fall through */
+			case -EPROBE_DEFER:
+				put_device(codec_dev);
+				return ret_val;
+			}
+		}
 	}
 
 	put_device(codec_dev);
-- 
2.20.1