pinctrl: exynos: Set pin function to EINT in irq_set_type of wake-up EINT

Pins used as wake-up interrupts need to be configured as EINTs. This
patch adds the required configuration code to exynos_wkup_irq_set_type,
to set the pin as EINT when its interrupt trigger type is configured.

Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Reviewed-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Thomas Abraham <thomas.abraham@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/pinctrl/pinctrl-exynos.c b/drivers/pinctrl/pinctrl-exynos.c
index 4bf2fc4..73a0aa2 100644 (file)
--- a/drivers/pinctrl/pinctrl-exynos.c
+++ b/drivers/pinctrl/pinctrl-exynos.c
@@ -257,6 +257,7 @@ static int exynos_wkup_irq_set_type(struct irq_data *irqd, unsigned int type)
        unsigned long reg_con = d->ctrl->weint_con + bank->eint_offset;
        unsigned long shift = EXYNOS_EINT_CON_LEN * pin;
        unsigned long con, trig_type;
+       unsigned int mask;
 
        switch (type) {
        case IRQ_TYPE_EDGE_RISING:
@@ -288,6 +289,16 @@ static int exynos_wkup_irq_set_type(struct irq_data *irqd, unsigned int type)
        con &= ~(EXYNOS_EINT_CON_MASK << shift);
        con |= trig_type << shift;
        writel(con, d->virt_base + reg_con);
+
+       reg_con = bank->pctl_offset;
+       shift = pin * bank->func_width;
+       mask = (1 << bank->func_width) - 1;
+
+       con = readl(d->virt_base + reg_con);
+       con &= ~(mask << shift);
+       con |= EXYNOS_EINT_FUNC << shift;
+       writel(con, d->virt_base + reg_con);
+
        return 0;
 }