This patch is to support gpio_to_irq() of GPIOlib for external
interrupts. The gpio_to_irq() calls s5p_gpiolib_eint_to_irq function.
Signed-off-by: Joonyoung Shim <jy0922.shim@xxxxxxxxxxx>
Signed-off-by: Kyungmin Park <kyungmin.park@xxxxxxxxxxx>
---
arch/arm/plat-s5p/Makefile | 1 +
arch/arm/plat-s5p/gpiolib.c | 35 ++++++++++++++++++++++++
arch/arm/plat-samsung/include/plat/gpio-core.h | 2 +
3 files changed, 38 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/plat-s5p/gpiolib.c
diff --git a/arch/arm/plat-s5p/Makefile b/arch/arm/plat-s5p/Makefile
index 39c242b..f6e1a13 100644
--- a/arch/arm/plat-s5p/Makefile
+++ b/arch/arm/plat-s5p/Makefile
@@ -15,6 +15,7 @@ obj- :=
obj-y += dev-uart.o
obj-y += cpu.o
obj-y += clock.o
+obj-y += gpiolib.o
obj-y += irq.o
obj-$(CONFIG_S5P_EXT_INT) += irq-eint.o
diff --git a/arch/arm/plat-s5p/gpiolib.c b/arch/arm/plat-s5p/gpiolib.c
new file mode 100644
index 0000000..0c27a9d
--- /dev/null
+++ b/arch/arm/plat-s5p/gpiolib.c
@@ -0,0 +1,35 @@
+/*
+ * linux/arch/arm/plat-s5p/gpiolib.c
+ *
+ * Copyright (C) 2010 Samsung Electronics Co.Ltd
+ * Author: Joonyoung Shim <jy0922.shim@xxxxxxxxxxx>
+ *
+ * S5P - GPIOlib support
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ */
+
+#include <linux/gpio.h>
+#include <mach/irqs.h>
+#include <mach/regs-gpio.h>
+
+/* be called from gpio_to_irq() for external interrupts */
+int s5p_gpiolib_eint_to_irq(struct gpio_chip *chip, unsigned int offset)
+{
+ switch (chip->base) {
+ case EINT_GPIO_0(0):
+ return IRQ_EINT(offset);
+ case EINT_GPIO_1(0):
+ return IRQ_EINT(8 + offset);
+ case EINT_GPIO_2(0):
+ return IRQ_EINT(16 + offset);
+ case EINT_GPIO_3(0):
+ return IRQ_EINT(24 + offset);
+ default:
+ return -EINVAL;
+ }
+}
diff --git a/arch/arm/plat-samsung/include/plat/gpio-core.h b/arch/arm/plat-samsung/include/plat/gpio-core.h
index e358c7d..f6c5151 100644
--- a/arch/arm/plat-samsung/include/plat/gpio-core.h
+++ b/arch/arm/plat-samsung/include/plat/gpio-core.h
@@ -121,6 +121,8 @@ extern void samsung_gpiolib_add_4bit2(struct s3c_gpio_chip *chip);
/* exported for core SoC support to change */
extern struct s3c_gpio_cfg s3c24xx_gpiocfg_default;
+extern int s5p_gpiolib_eint_to_irq(struct gpio_chip *chip, unsigned int offset);
+
#ifdef CONFIG_S3C_GPIO_TRACK
extern struct s3c_gpio_chip *s3c_gpios[S3C_GPIO_END];
--
1.7.0.4
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