From: Camel Guo <camelg@axis.com>
Date: Fri, 18 Sep 2020 11:40:25 +0000 (+0200)
Subject: ASoC: tlv320adcx140: Add support for configuring GPIO pin
X-Git-Tag: v5.10.7~1069^2~3^2~108
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=d5214321498a43558d9ffcce4153775c2c296bad;p=platform%2Fkernel%2Flinux-rpi.git

ASoC: tlv320adcx140: Add support for configuring GPIO pin

Add support to configure the GPIO pin to the specific configuration.
The GPIO pin can be configured as GPO, IRQ, SDOUT2, PDMCLK, MICBASE_EN,
GPI, MCLK, SDIN, PDMDIN1, PDMDIN2, PDMDIN3 or PDMDIN4 and the output
drive can be configured with various configuration.

Signed-off-by: Camel Guo <camelg@axis.com>
Link: https://lore.kernel.org/r/20200918114025.18205-2-camel.guo@axis.com
Signed-off-by: Mark Brown <broonie@kernel.org>
---

diff --git a/sound/soc/codecs/tlv320adcx140.c b/sound/soc/codecs/tlv320adcx140.c
index 28dbd7d..53a8024 100644
--- a/sound/soc/codecs/tlv320adcx140.c
+++ b/sound/soc/codecs/tlv320adcx140.c
@@ -861,6 +861,42 @@ static int adcx140_configure_gpo(struct adcx140_priv *adcx140)
 
 }
 
+static int adcx140_configure_gpio(struct adcx140_priv *adcx140)
+{
+	int gpio_count = 0;
+	u32 gpio_outputs[ADCX140_NUM_GPIO_CFGS];
+	u32 gpio_output_val = 0;
+	int ret;
+
+	gpio_count = device_property_count_u32(adcx140->dev,
+			"ti,gpio-config");
+	if (gpio_count == 0)
+		return 0;
+
+	if (gpio_count != ADCX140_NUM_GPIO_CFGS)
+		return -EINVAL;
+
+	ret = device_property_read_u32_array(adcx140->dev, "ti,gpio-config",
+			gpio_outputs, gpio_count);
+	if (ret)
+		return ret;
+
+	if (gpio_outputs[0] > ADCX140_GPIO_CFG_MAX) {
+		dev_err(adcx140->dev, "GPIO config out of range\n");
+		return -EINVAL;
+	}
+
+	if (gpio_outputs[1] > ADCX140_GPIO_DRV_MAX) {
+		dev_err(adcx140->dev, "GPIO drive out of range\n");
+		return -EINVAL;
+	}
+
+	gpio_output_val = gpio_outputs[0] << ADCX140_GPIO_SHIFT
+		| gpio_outputs[1];
+
+	return regmap_write(adcx140->regmap, ADCX140_GPIO_CFG0, gpio_output_val);
+}
+
 static int adcx140_codec_probe(struct snd_soc_component *component)
 {
 	struct adcx140_priv *adcx140 = snd_soc_component_get_drvdata(component);
@@ -958,6 +994,10 @@ static int adcx140_codec_probe(struct snd_soc_component *component)
 			return ret;
 	}
 
+	ret = adcx140_configure_gpio(adcx140);
+	if (ret)
+		return ret;
+
 	ret = adcx140_configure_gpo(adcx140);
 	if (ret)
 		goto out;
diff --git a/sound/soc/codecs/tlv320adcx140.h b/sound/soc/codecs/tlv320adcx140.h
index 107bd79..d7d4e3a 100644
--- a/sound/soc/codecs/tlv320adcx140.h
+++ b/sound/soc/codecs/tlv320adcx140.h
@@ -148,4 +148,9 @@
 
 #define ADCX140_TX_FILL    BIT(0)
 
+#define ADCX140_NUM_GPIO_CFGS		2
+#define ADCX140_GPIO_SHIFT		4
+#define ADCX140_GPIO_CFG_MAX		15
+#define ADCX140_GPIO_DRV_MAX		5
+
 #endif /* _TLV320ADCX140_ */