linux-kernel - [PATCH] ASoC: simple-card: add "invert" property for detect GPIOs

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Date:	Sat,  1 Nov 2014 11:22:18 +0800
From:	Jianqun <jay.xu@...k-chips.com>
To:	heiko@...ech.de, lgirdwood@...il.com, broonie@...nel.org,
	perex@...ex.cz, tiwai@...e.de, Li.Xiubo@...escale.com,
	moinejf@...e.fr, kuninori.morimoto.gx@...esas.com, jsarha@...com,
	Guangyu.Chen@...escale.com, dgreid@...omium.org,
	linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
	alsa-devel@...a-project.org
Cc:	huangtao@...k-chips.com, cf@...k-chips.com,
	Jianqun <jay.xu@...k-chips.com>
Subject: [PATCH] ASoC: simple-card: add "invert" property for detect GPIOs

Since hardware may invert detect GPIO of headphone or mic, add one
property to support software invert.

Signed-off-by: Jianqun <jay.xu@...k-chips.com>
---
 sound/soc/generic/simple-card.c | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/sound/soc/generic/simple-card.c b/sound/soc/generic/simple-card.c
index d1b7293..f1bb537 100644
--- a/sound/soc/generic/simple-card.c
+++ b/sound/soc/generic/simple-card.c
@@ -29,7 +29,9 @@ struct simple_card_data {
 	} *dai_props;
 	unsigned int mclk_fs;
 	int gpio_hp_det;
+	int gpio_hp_det_invert;
 	int gpio_mic_det;
+	int gpio_mic_det_invert;
 	struct snd_soc_dai_link dai_link[];	/* dynamically allocated */
 };
 
@@ -148,6 +150,7 @@ static int asoc_simple_card_dai_init(struct snd_soc_pcm_runtime *rtd)
 				      simple_card_hp_jack_pins);
 
 		simple_card_hp_jack_gpio.gpio = priv->gpio_hp_det;
+		simple_card_hp_jack_gpio.invert = priv->gpio_hp_det_invert;
 		snd_soc_jack_add_gpios(&simple_card_hp_jack, 1,
 				       &simple_card_hp_jack_gpio);
 	}
@@ -159,6 +162,7 @@ static int asoc_simple_card_dai_init(struct snd_soc_pcm_runtime *rtd)
 				      ARRAY_SIZE(simple_card_mic_jack_pins),
 				      simple_card_mic_jack_pins);
 		simple_card_mic_jack_gpio.gpio = priv->gpio_mic_det;
+		simple_card_mic_jack_gpio.invert = priv->gpio_mic_det_invert;
 		snd_soc_jack_add_gpios(&simple_card_mic_jack, 1,
 				       &simple_card_mic_jack_gpio);
 	}
@@ -381,6 +385,7 @@ static int asoc_simple_card_parse_of(struct device_node *node,
 				     struct simple_card_data *priv)
 {
 	struct device *dev = simple_priv_to_dev(priv);
+	enum of_gpio_flags flags;
 	u32 val;
 	int ret;
 
@@ -436,13 +441,15 @@ static int asoc_simple_card_parse_of(struct device_node *node,
 			return ret;
 	}
 
-	priv->gpio_hp_det = of_get_named_gpio(node,
-				"simple-audio-card,hp-det-gpio", 0);
+	priv->gpio_hp_det = of_get_named_gpio_flags(node,
+				"simple-audio-card,hp-det-gpio", 0, &flags);
+	priv->gpio_hp_det_invert = !!(flags & OF_GPIO_ACTIVE_LOW);
 	if (priv->gpio_hp_det == -EPROBE_DEFER)
 		return -EPROBE_DEFER;
 
-	priv->gpio_mic_det = of_get_named_gpio(node,
-				"simple-audio-card,mic-det-gpio", 0);
+	priv->gpio_mic_det = of_get_named_gpio_flags(node,
+				"simple-audio-card,mic-det-gpio", 0, &flags);
+	priv->gpio_mic_det_invert = !!(flags & OF_GPIO_ACTIVE_LOW);
 	if (priv->gpio_mic_det == -EPROBE_DEFER)
 		return -EPROBE_DEFER;
 
-- 
1.9.1


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