pinctrl: exynos: Add irq_chip instance for Exynos7 wakeup interrupts

Exynos7 uses different offsets for wakeup interrupt configuration registers.
So a new irq_chip instance for Exynos7 wakeup interrupts is added. The irq_chip
selection is now based on the wakeup interrupt controller compatible string.

Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com>
Reviewed-by: Thomas Abraham <thomas.ab@samsung.com>
Tested-by: Thomas Abraham <thomas.ab@samsung.com>
Acked-by: Tomasz Figa <tomasz.figa@gmail.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Tomasz Figa <tomasz.figa@gmail.com>

diff --git a/Documentation/devicetree/bindings/pinctrl/samsung-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/samsung-pinctrl.txt
index e82aaf4..f80519a 100644 (file)
--- a/Documentation/devicetree/bindings/pinctrl/samsung-pinctrl.txt
+++ b/Documentation/devicetree/bindings/pinctrl/samsung-pinctrl.txt
@@ -136,6 +136,8 @@ B. External Wakeup Interrupts: For supporting external wakeup interrupts, a
        found on Samsung S3C64xx SoCs,
      - samsung,exynos4210-wakeup-eint: represents wakeup interrupt controller
        found on Samsung Exynos4210 and S5PC110/S5PV210 SoCs.
+     - samsung,exynos7-wakeup-eint: represents wakeup interrupt controller
+       found on Samsung Exynos7 SoC.
    - interrupt-parent: phandle of the interrupt parent to which the external
      wakeup interrupts are forwarded to.
    - interrupts: interrupt used by multiplexed wakeup interrupts.

diff --git a/drivers/pinctrl/samsung/pinctrl-exynos.c b/drivers/pinctrl/samsung/pinctrl-exynos.c
index 7a7eb6a..d97765c 100644 (file)
--- a/drivers/pinctrl/samsung/pinctrl-exynos.c
+++ b/drivers/pinctrl/samsung/pinctrl-exynos.c
@@ -56,12 +56,6 @@ static const struct samsung_pin_bank_type bank_type_alive = {
        .reg_offset = { 0x00, 0x04, 0x08, 0x0c, },
 };
 
-/* list of external wakeup controllers supported */
-static const struct of_device_id exynos_wkup_irq_ids[] = {
-       { .compatible = "samsung,exynos4210-wakeup-eint", },
-       { }
-};
-
 static void exynos_irq_mask(struct irq_data *irqd)
 {
        struct irq_chip *chip = irq_data_get_irq_chip(irqd);
@@ -384,9 +378,9 @@ static int exynos_wkup_irq_set_wake(struct irq_data *irqd, unsigned int on)
 /*
  * irq_chip for wakeup interrupts
  */
-static struct exynos_irq_chip exynos_wkup_irq_chip = {
+static struct exynos_irq_chip exynos4210_wkup_irq_chip __initdata = {
        .chip = {
-               .name = "exynos_wkup_irq_chip",
+               .name = "exynos4210_wkup_irq_chip",
                .irq_unmask = exynos_irq_unmask,
                .irq_mask = exynos_irq_mask,
                .irq_ack = exynos_irq_ack,
@@ -400,6 +394,31 @@ static struct exynos_irq_chip exynos_wkup_irq_chip = {
        .eint_pend = EXYNOS_WKUP_EPEND_OFFSET,
 };
 
+static struct exynos_irq_chip exynos7_wkup_irq_chip __initdata = {
+       .chip = {
+               .name = "exynos7_wkup_irq_chip",
+               .irq_unmask = exynos_irq_unmask,
+               .irq_mask = exynos_irq_mask,
+               .irq_ack = exynos_irq_ack,
+               .irq_set_type = exynos_irq_set_type,
+               .irq_set_wake = exynos_wkup_irq_set_wake,
+               .irq_request_resources = exynos_irq_request_resources,
+               .irq_release_resources = exynos_irq_release_resources,
+       },
+       .eint_con = EXYNOS7_WKUP_ECON_OFFSET,
+       .eint_mask = EXYNOS7_WKUP_EMASK_OFFSET,
+       .eint_pend = EXYNOS7_WKUP_EPEND_OFFSET,
+};
+
+/* list of external wakeup controllers supported */
+static const struct of_device_id exynos_wkup_irq_ids[] = {
+       { .compatible = "samsung,exynos4210-wakeup-eint",
+                       .data = &exynos4210_wkup_irq_chip },
+       { .compatible = "samsung,exynos7-wakeup-eint",
+                       .data = &exynos7_wkup_irq_chip },
+       { }
+};
+
 /* interrupt handler for wakeup interrupts 0..15 */
 static void exynos_irq_eint0_15(unsigned int irq, struct irq_desc *desc)
 {
@@ -468,12 +487,18 @@ static int exynos_eint_wkup_init(struct samsung_pinctrl_drv_data *d)
        struct samsung_pin_bank *bank;
        struct exynos_weint_data *weint_data;
        struct exynos_muxed_weint_data *muxed_data;
+       struct exynos_irq_chip *irq_chip;
        unsigned int muxed_banks = 0;
        unsigned int i;
        int idx, irq;
 
        for_each_child_of_node(dev->of_node, np) {
-               if (of_match_node(exynos_wkup_irq_ids, np)) {
+               const struct of_device_id *match;
+
+               match = of_match_node(exynos_wkup_irq_ids, np);
+               if (match) {
+                       irq_chip = kmemdup(match->data,
+                               sizeof(*irq_chip), GFP_KERNEL);
                        wkup_np = np;
                        break;
                }
@@ -493,7 +518,7 @@ static int exynos_eint_wkup_init(struct samsung_pinctrl_drv_data *d)
                        return -ENXIO;
                }
 
-               bank->irq_chip = &exynos_wkup_irq_chip;
+               bank->irq_chip = irq_chip;
 
                if (!of_find_property(bank->of_node, "interrupts", NULL)) {
                        bank->eint_type = EINT_TYPE_WKUP_MUX;

diff --git a/drivers/pinctrl/samsung/pinctrl-exynos.h b/drivers/pinctrl/samsung/pinctrl-exynos.h
index 3c91c35..0f0f7ce 100644 (file)
--- a/drivers/pinctrl/samsung/pinctrl-exynos.h
+++ b/drivers/pinctrl/samsung/pinctrl-exynos.h
@@ -25,6 +25,9 @@
 #define EXYNOS_WKUP_ECON_OFFSET                0xE00
 #define EXYNOS_WKUP_EMASK_OFFSET       0xF00
 #define EXYNOS_WKUP_EPEND_OFFSET       0xF40
+#define EXYNOS7_WKUP_ECON_OFFSET       0x700
+#define EXYNOS7_WKUP_EMASK_OFFSET      0x900
+#define EXYNOS7_WKUP_EPEND_OFFSET      0xA00
 #define EXYNOS_SVC_OFFSET              0xB08
 #define EXYNOS_EINT_FUNC               0xF