| Message ID | 20200911080753.30342-2-camel.guo@axis.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | [v2,1/3] dt-bindings: tlv320adcx140: Add GPIO config and drive config | expand |
Camel On 9/11/20 3:07 AM, Camel Guo wrote: > 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> > --- > sound/soc/codecs/tlv320adcx140.c | 44 ++++++++++++++++++++++++++++++++ > sound/soc/codecs/tlv320adcx140.h | 4 +++ > 2 files changed, 48 insertions(+) > > diff --git a/sound/soc/codecs/tlv320adcx140.c b/sound/soc/codecs/tlv320adcx140.c > index f33ee604ee78..97f16fbba441 100644 > --- a/sound/soc/codecs/tlv320adcx140.c > +++ b/sound/soc/codecs/tlv320adcx140.c > @@ -837,6 +837,46 @@ 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[2]; This is #defined in configure_gpo and configure_gpi would like to see the consistency here. > + 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 != 2) Same comment as above. > + 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]; > + > + ret = regmap_write(adcx140->regmap, ADCX140_GPIO_CFG0, gpio_output_val); > + if (ret) > + return ret; Just do return regmap_write no reason to check it. It is checked by the caller. Dan
Camel On 9/15/20 1:41 PM, Dan Murphy wrote: > Camel > > On 9/11/20 3:07 AM, Camel Guo wrote: >> From: Camel Guo <camelg@axis.com> One other thing for the device tree you need to add Rob Herring and devicetree@vger.kernel.org
diff --git a/sound/soc/codecs/tlv320adcx140.c b/sound/soc/codecs/tlv320adcx140.c index f33ee604ee78..97f16fbba441 100644 --- a/sound/soc/codecs/tlv320adcx140.c +++ b/sound/soc/codecs/tlv320adcx140.c @@ -837,6 +837,46 @@ 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[2]; + 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 != 2) + 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]; + + ret = regmap_write(adcx140->regmap, ADCX140_GPIO_CFG0, gpio_output_val); + if (ret) + return ret; + + return 0; +} + static int adcx140_codec_probe(struct snd_soc_component *component) { struct adcx140_priv *adcx140 = snd_soc_component_get_drvdata(component); @@ -934,6 +974,10 @@ 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..96f067e65e2a 100644 --- a/sound/soc/codecs/tlv320adcx140.h +++ b/sound/soc/codecs/tlv320adcx140.h @@ -145,4 +145,8 @@ #define ADCX140_GPO_CFG_MAX 4 #define ADCX140_GPO_DRV_MAX 5 +#define ADCX140_GPIO_SHIFT 4 +#define ADCX140_GPIO_CFG_MAX 15 +#define ADCX140_GPIO_DRV_MAX 5 + #endif /* _TLV320ADCX140_ */