[PATCH v1 1/1] gpio: msm_gpio: return correct value for gpio read

[Sumit Garg]

On Thu, May 08, 2025 at 05:06:46PM +0530, Aswin Murugan wrote:
> In the current implementation, the GPIO read operation considers
> both the input and outbut bits (bits 0 and 1). It should only consider
> the state of input bit, i.e bit 0. To address this, mask input bit
> alone and read it.
> 
> Signed-off-by: Aswin Murugan <aswin.murugan at oss.qualcomm.com>
> ---
>  drivers/gpio/msm_gpio.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Reviewed-by: Sumit Garg <sumit.garg at oss.qualcomm.com>

-Sumit

> 
> diff --git a/drivers/gpio/msm_gpio.c b/drivers/gpio/msm_gpio.c
> index 6783fc756f4..7de332c66ae 100644
> --- a/drivers/gpio/msm_gpio.c
> +++ b/drivers/gpio/msm_gpio.c
> @@ -202,7 +202,7 @@ static int msm_gpio_get_value(struct udevice *dev, unsigned int gpio)
>  	if (qcom_is_special_pin(priv->pin_data, gpio))
>  		return msm_gpio_get_value_special(priv, gpio);
>  
> -	return !!(readl(priv->base + GPIO_IN_OUT_REG(dev, gpio)) >> GPIO_IN);
> +	return !!(readl(priv->base + GPIO_IN_OUT_REG(dev, gpio)) & BIT(GPIO_IN));
>  }
>  
>  static int msm_gpio_get_function_special(struct msm_gpio_bank *priv,
> -- 
> 2.34.1
>