HACK-TO-REVERT: ASoC: simple-card: add support hp/mic detect for internal codec

This is a local patch, because our simple-card is too
backward from upstream. This will take more time on
the cherry-pick patch and verification.

In order to speed up the progress, I put this local
patch and please revert it after I merge the new
patches of simple-card.

Change-Id: If566cf66c69d3a4fccbffc423433e6b724a23c04
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>

Author: acgzx

include/sound/simple_card.h

@@ -35,4 +35,6 @@ struct asoc_simple_card_info {
 	struct asoc_simple_dai codec_dai;
 };
 
+struct snd_soc_jack *asoc_simple_card_get_hp_jack(void);
+
 #endif /* __SIMPLE_CARD_H */

sound/soc/generic/simple-card.c

@@ -33,6 +33,7 @@ struct simple_card_data {
 	int gpio_hp_det_invert;
 	int gpio_mic_det;
 	int gpio_mic_det_invert;
+	bool codec_hp_det;
 	struct snd_soc_dai_link dai_link[];	/* dynamically allocated */
 };
 
@@ -137,6 +138,12 @@ static struct snd_soc_jack_gpio simple_card_mic_jack_gpio = {
 	.debounce_time = 150,
 };
 
+struct snd_soc_jack *asoc_simple_card_get_hp_jack(void)
+{
+	return &simple_card_hp_jack;
+}
+EXPORT_SYMBOL_GPL(asoc_simple_card_get_hp_jack);
+
 static int __asoc_simple_card_dai_init(struct snd_soc_dai *dai,
 				       struct asoc_simple_dai *set)
 {
@@ -210,6 +217,14 @@ static int asoc_simple_card_dai_init(struct snd_soc_pcm_runtime *rtd)
 		snd_soc_jack_add_gpios(&simple_card_mic_jack, 1,
 				       &simple_card_mic_jack_gpio);
 	}
+
+	if (priv->codec_hp_det)
+		snd_soc_card_jack_new(rtd->card, "Headphones",
+				      SND_JACK_HEADPHONE,
+				      &simple_card_hp_jack,
+				      simple_card_hp_jack_pins,
+				      ARRAY_SIZE(simple_card_hp_jack_pins));
+
 	return 0;
 }
 
@@ -514,6 +529,9 @@ static int asoc_simple_card_parse_of(struct device_node *node,
 	if (priv->gpio_mic_det == -EPROBE_DEFER)
 		return -EPROBE_DEFER;
 
+	priv->codec_hp_det = of_property_read_bool(node,
+				  "simple-audio-card,codec-hp-det");
+
 	if (!priv->snd_card.name)
 		priv->snd_card.name = priv->snd_card.dai_link->name;
 
@@ -566,6 +584,8 @@ static int asoc_simple_card_probe(struct platform_device *pdev)
 	priv->gpio_hp_det = -ENOENT;
 	priv->gpio_mic_det = -ENOENT;
 
+	priv->codec_hp_det = false;
+
 	/* Get room for the other properties */
 	priv->dai_props = devm_kzalloc(dev,
 			sizeof(*priv->dai_props) * num_links,