diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/pinctrl/pinctrl-rockchip.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c index cfdeb81035b6..65b73217c2c3 100644 --- a/drivers/pinctrl/pinctrl-rockchip.c +++ b/drivers/pinctrl/pinctrl-rockchip.c @@ -70,6 +70,7 @@ enum rockchip_pinctrl_type { #define IOMUX_GPIO_ONLY BIT(0) #define IOMUX_WIDTH_4BIT BIT(1) #define IOMUX_SOURCE_PMU BIT(2) +#define IOMUX_UNROUTED BIT(3) /** * @type: iomux variant using IOMUX_* constants @@ -386,6 +387,11 @@ static int rockchip_get_mux(struct rockchip_pin_bank *bank, int pin) if (iomux_num > 3) return -EINVAL; + if (bank->iomux[iomux_num].type & IOMUX_UNROUTED) { + dev_err(info->dev, "pin %d is unrouted\n", pin); + return -EINVAL; + } + if (bank->iomux[iomux_num].type & IOMUX_GPIO_ONLY) return RK_FUNC_GPIO; @@ -436,6 +442,11 @@ static int rockchip_set_mux(struct rockchip_pin_bank *bank, int pin, int mux) if (iomux_num > 3) return -EINVAL; + if (bank->iomux[iomux_num].type & IOMUX_UNROUTED) { + dev_err(info->dev, "pin %d is unrouted\n", pin); + return -EINVAL; + } + if (bank->iomux[iomux_num].type & IOMUX_GPIO_ONLY) { if (mux != RK_FUNC_GPIO) { dev_err(info->dev, |