diff options
Diffstat (limited to 'drivers/gpio/msm_gpio.c')
| -rw-r--r-- | drivers/gpio/msm_gpio.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/gpio/msm_gpio.c b/drivers/gpio/msm_gpio.c index 80cd28bb231..5e57b0cbde7 100644 --- a/drivers/gpio/msm_gpio.c +++ b/drivers/gpio/msm_gpio.c @@ -39,6 +39,10 @@ static int msm_gpio_direction_input(struct udevice *dev, unsigned int gpio) { struct msm_gpio_bank *priv = dev_get_priv(dev); + /* Always NOP for special pins, assume they're in the correct state */ + if (qcom_is_special_pin(priv->pin_data, gpio)) + return 0; + /* Disable OE bit */ clrsetbits_le32(priv->base + GPIO_CONFIG_REG(dev, gpio), GPIO_OE_MASK, GPIO_OE_DISABLE); @@ -50,6 +54,10 @@ static int msm_gpio_set_value(struct udevice *dev, unsigned int gpio, int value) { struct msm_gpio_bank *priv = dev_get_priv(dev); + /* Always NOP for special pins, assume they're in the correct state */ + if (qcom_is_special_pin(priv->pin_data, gpio)) + return 0; + value = !!value; /* set value */ writel(value << GPIO_OUT, priv->base + GPIO_IN_OUT_REG(dev, gpio)); @@ -62,6 +70,10 @@ static int msm_gpio_direction_output(struct udevice *dev, unsigned int gpio, { struct msm_gpio_bank *priv = dev_get_priv(dev); + /* Always NOP for special pins, assume they're in the correct state */ + if (qcom_is_special_pin(priv->pin_data, gpio)) + return 0; + value = !!value; /* set value */ writel(value << GPIO_OUT, priv->base + GPIO_IN_OUT_REG(dev, gpio)); @@ -76,6 +88,10 @@ static int msm_gpio_get_value(struct udevice *dev, unsigned int gpio) { struct msm_gpio_bank *priv = dev_get_priv(dev); + /* Always NOP for special pins, assume they're in the correct state */ + if (qcom_is_special_pin(priv->pin_data, gpio)) + return 0; + return !!(readl(priv->base + GPIO_IN_OUT_REG(dev, gpio)) >> GPIO_IN); } @@ -83,6 +99,10 @@ static int msm_gpio_get_function(struct udevice *dev, unsigned int gpio) { struct msm_gpio_bank *priv = dev_get_priv(dev); + /* Always NOP for special pins, assume they're in the correct state */ + if (qcom_is_special_pin(priv->pin_data, gpio)) + return 0; + if (readl(priv->base + GPIO_CONFIG_REG(dev, gpio)) & GPIO_OE_ENABLE) return GPIOF_OUTPUT; |