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authorTomasz Figa <t.figa@samsung.com>2012-09-21 02:33:48 +0400
committerKukjin Kim <kgene.kim@samsung.com>2012-09-21 02:33:48 +0400
commitee2f573c4206ff3c4dbff2296c8d383d045c80a2 (patch)
tree1ce7b96feeb3e2afe709470de9db6cf4144c33d1 /drivers/pinctrl
parent011527b45f8e3092e1f3192e5aea94187a6ca269 (diff)
downloadlinux-ee2f573c4206ff3c4dbff2296c8d383d045c80a2.tar.xz
pinctrl: exynos: Set pin function to EINT in irq_set_type of GPIO EINTa
Pins used as GPIO interrupts need to be configured as EINTs. This patch adds the required configuration code to exynos_gpio_irq_set_type, to set the pin as EINT when its interrupt trigger is configured. Signed-off-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Diffstat (limited to 'drivers/pinctrl')
-rw-r--r--drivers/pinctrl/pinctrl-exynos.c12
-rw-r--r--drivers/pinctrl/pinctrl-exynos.h1
2 files changed, 13 insertions, 0 deletions
diff --git a/drivers/pinctrl/pinctrl-exynos.c b/drivers/pinctrl/pinctrl-exynos.c
index 447818d9851b..c2fa85f18764 100644
--- a/drivers/pinctrl/pinctrl-exynos.c
+++ b/drivers/pinctrl/pinctrl-exynos.c
@@ -76,9 +76,11 @@ static int exynos_gpio_irq_set_type(struct irq_data *irqd, unsigned int type)
struct samsung_pinctrl_drv_data *d = irqd->domain->host_data;
struct samsung_pin_ctrl *ctrl = d->ctrl;
struct exynos_geint_data *edata = irq_data_get_irq_handler_data(irqd);
+ struct samsung_pin_bank *bank = edata->bank;
unsigned int shift = EXYNOS_EINT_CON_LEN * edata->pin;
unsigned int con, trig_type;
unsigned long reg_con = ctrl->geint_con + edata->eint_offset;
+ unsigned int mask;
switch (type) {
case IRQ_TYPE_EDGE_RISING:
@@ -110,6 +112,16 @@ static int exynos_gpio_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 = edata->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;
}
diff --git a/drivers/pinctrl/pinctrl-exynos.h b/drivers/pinctrl/pinctrl-exynos.h
index 5f27ba974a3a..31d0a06174e4 100644
--- a/drivers/pinctrl/pinctrl-exynos.h
+++ b/drivers/pinctrl/pinctrl-exynos.h
@@ -144,6 +144,7 @@ enum exynos4210_gpio_xc_start {
#define EXYNOS_WKUP_EMASK_OFFSET 0xF00
#define EXYNOS_WKUP_EPEND_OFFSET 0xF40
#define EXYNOS_SVC_OFFSET 0xB08
+#define EXYNOS_EINT_FUNC 0xF
/* helpers to access interrupt service register */
#define EXYNOS_SVC_GROUP_SHIFT 3