From: Camel Guo camelg@axis.com

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 Acked-by: Dan Murphy dmurphy@ti.com --- v4: - Rebase and fix merge conflict - Add Acked-by from Dan 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 28dbd7d5e149..53a80246aee1 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 107bd7927d9c..d7d4e3a88b5c 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_ */