Re: [PATCH v3 2/2] ASoC: tlv320adcx140: Add support for configuring GPIO pin

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Camel

On 9/16/20 2:59 AM, Camel Guo wrote:
From: Camel Guo <camelg@xxxxxxxx>

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@xxxxxxxx>
---
  v3:
   - Add ADCX140_NUM_GPIO_CFGS avoiding using magic number
   - Remove unneeded check on ret in adcx140_configure_gpio

  sound/soc/codecs/tlv320adcx140.c | 40 ++++++++++++++++++++++++++++++++
  sound/soc/codecs/tlv320adcx140.h |  5 ++++
  2 files changed, 45 insertions(+)

diff --git a/sound/soc/codecs/tlv320adcx140.c b/sound/soc/codecs/tlv320adcx140.c
index f33ee604ee78..fe6fc6df66cc 100644
--- a/sound/soc/codecs/tlv320adcx140.c
+++ b/sound/soc/codecs/tlv320adcx140.c
@@ -837,6 +837,42 @@ 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);
@@ -934,6 +970,10 @@ 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 eedbc1d7221f..9d04dec374d1 100644
--- a/sound/soc/codecs/tlv320adcx140.h
+++ b/sound/soc/codecs/tlv320adcx140.h
@@ -145,4 +145,9 @@
  #define ADCX140_GPO_CFG_MAX		4
  #define ADCX140_GPO_DRV_MAX		5
+#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_ */
Acked-by: Dan Murphy <dmurphy@xxxxxx>



[Index of Archives]     [ALSA User]     [Linux Audio Users]     [Pulse Audio]     [Kernel Archive]     [Asterisk PBX]     [Photo Sharing]     [Linux Sound]     [Video 4 Linux]     [Gimp]     [Yosemite News]

  Powered by Linux