From mboxrd@z Thu Jan  1 00:00:00 1970
From: Patrice CHOTARD <patrice.chotard@st.com>
Date: Thu, 2 Jul 2020 07:58:45 +0000
Subject: [PATCH v2 09/11] gpio: stmfx: add ops get_dir_flags
In-Reply-To: <20200604143022.v2.9.I375f10587b02d30722492fc1101aaf214c8a873b@changeid>
References: <20200604123033.25499-1-patrick.delaunay@st.com>
 <20200604143022.v2.9.I375f10587b02d30722492fc1101aaf214c8a873b@changeid>
Message-ID: <7c313cec-1573-aa2b-20c6-eaa192bb721d@st.com>
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To: u-boot@lists.denx.de

Hi Patrick

On 6/4/20 2:30 PM, Patrick Delaunay wrote:
> Add support of ops get_dir_flags() to read dir flags from
> STMFX registers.
>
> Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
> ---
>
> Changes in v2: None
>
>  drivers/pinctrl/pinctrl-stmfx.c | 50 +++++++++++++++++++++++++++++++++
>  1 file changed, 50 insertions(+)
>
> diff --git a/drivers/pinctrl/pinctrl-stmfx.c b/drivers/pinctrl/pinctrl-stmfx.c
> index 88df9e61a7..1d326ecf17 100644
> --- a/drivers/pinctrl/pinctrl-stmfx.c
> +++ b/drivers/pinctrl/pinctrl-stmfx.c
> @@ -108,12 +108,22 @@ static int stmfx_conf_set_pupd(struct udevice *dev, unsigned int offset,
>  	return stmfx_write_reg(dev, STMFX_REG_GPIO_PUPD, offset, pupd);
>  }
>  
> +static int stmfx_conf_get_pupd(struct udevice *dev, unsigned int offset)
> +{
> +	return stmfx_read_reg(dev, STMFX_REG_GPIO_PUPD, offset);
> +}
> +
>  static int stmfx_conf_set_type(struct udevice *dev, unsigned int offset,
>  			       uint type)
>  {
>  	return stmfx_write_reg(dev, STMFX_REG_GPIO_TYPE, offset, type);
>  }
>  
> +static int stmfx_conf_get_type(struct udevice *dev, unsigned int offset)
> +{
> +	return stmfx_read_reg(dev, STMFX_REG_GPIO_TYPE, offset);
> +}
> +
>  static int stmfx_gpio_get(struct udevice *dev, unsigned int offset)
>  {
>  	return stmfx_read_reg(dev, STMFX_REG_GPIO_STATE, offset);
> @@ -189,6 +199,45 @@ static int stmfx_gpio_set_dir_flags(struct udevice *dev, unsigned int offset,
>  	return ret;
>  }
>  
> +static int stmfx_gpio_get_dir_flags(struct udevice *dev, unsigned int offset,
> +				    ulong *flags)
> +{
> +	ulong dir_flags = 0;
> +	int ret;
> +
> +	if (stmfx_gpio_get_function(dev, offset) == GPIOF_OUTPUT) {
> +		dir_flags |= GPIOD_IS_OUT;
> +		ret = stmfx_conf_get_type(dev, offset);
> +		if (ret < 0)
> +			return ret;
> +		if (ret == 0)
> +			dir_flags |= GPIOD_OPEN_DRAIN;
> +			/* 1 = push-pull (default), open source not supported */
> +		ret = stmfx_gpio_get(dev, offset);
> +		if (ret < 0)
> +			return ret;
> +		if (ret)
> +			dir_flags |= GPIOD_IS_OUT_ACTIVE;
> +	} else {
> +		dir_flags |= GPIOD_IS_IN;
> +		ret = stmfx_conf_get_type(dev, offset);
> +		if (ret < 0)
> +			return ret;
> +		if (ret == 1) {
> +			ret = stmfx_conf_get_pupd(dev, offset);
> +			if (ret < 0)
> +				return ret;
> +			if (ret == 1)
> +				dir_flags |= GPIOD_PULL_UP;
> +			else
> +				dir_flags |= GPIOD_PULL_DOWN;
> +		}
> +	}
> +	*flags = dir_flags;
> +
> +	return 0;
> +}
> +
>  static int stmfx_gpio_probe(struct udevice *dev)
>  {
>  	struct gpio_dev_priv *uc_priv = dev_get_uclass_priv(dev);
> @@ -218,6 +267,7 @@ static const struct dm_gpio_ops stmfx_gpio_ops = {
>  	.direction_input = stmfx_gpio_direction_input,
>  	.direction_output = stmfx_gpio_direction_output,
>  	.set_dir_flags = stmfx_gpio_set_dir_flags,
> +	.get_dir_flags = stmfx_gpio_get_dir_flags,
>  };
>  
>  U_BOOT_DRIVER(stmfx_gpio) = {

Reviewed-by: Patrice Chotard <patrice.chotard@st.com>

Thanks