From 6a4e5227a33f60f918b30cf2001fb0bb259d9396 Mon Sep 17 00:00:00 2001
From: Haavard Skinnemoen <hskinnemoen@atmel.com>
Date: Mon, 5 Feb 2007 16:57:13 +0100
Subject: [AVR32] GPIO API implementation

Arch-neutral GPIO calls for AVR32. GPIO IRQ support written by
David Brownell.

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
---
 include/asm-avr32/arch-at32ap/gpio.h    | 27 +++++++++++++++++++++++++++
 include/asm-avr32/arch-at32ap/irq.h     | 14 ++++++++++++++
 include/asm-avr32/arch-at32ap/portmux.h |  7 ++++---
 include/asm-avr32/gpio.h                |  6 ++++++
 include/asm-avr32/irq.h                 |  8 ++++++--
 5 files changed, 57 insertions(+), 5 deletions(-)
 create mode 100644 include/asm-avr32/arch-at32ap/gpio.h
 create mode 100644 include/asm-avr32/arch-at32ap/irq.h
 create mode 100644 include/asm-avr32/gpio.h

(limited to 'include/asm-avr32')

diff --git a/include/asm-avr32/arch-at32ap/gpio.h b/include/asm-avr32/arch-at32ap/gpio.h
new file mode 100644
index 000000000000..fcb756bdaa8e
--- /dev/null
+++ b/include/asm-avr32/arch-at32ap/gpio.h
@@ -0,0 +1,27 @@
+#ifndef __ASM_AVR32_ARCH_GPIO_H
+#define __ASM_AVR32_ARCH_GPIO_H
+
+#include <linux/compiler.h>
+#include <asm/irq.h>
+
+
+/* Arch-neutral GPIO API */
+int __must_check gpio_request(unsigned int gpio, const char *label);
+void gpio_free(unsigned int gpio);
+
+int gpio_direction_input(unsigned int gpio);
+int gpio_direction_output(unsigned int gpio);
+int gpio_get_value(unsigned int gpio);
+void gpio_set_value(unsigned int gpio, int value);
+
+static inline int gpio_to_irq(unsigned int gpio)
+{
+	return gpio + GPIO_IRQ_BASE;
+}
+
+static inline int irq_to_gpio(unsigned int irq)
+{
+	return irq - GPIO_IRQ_BASE;
+}
+
+#endif /* __ASM_AVR32_ARCH_GPIO_H */
diff --git a/include/asm-avr32/arch-at32ap/irq.h b/include/asm-avr32/arch-at32ap/irq.h
new file mode 100644
index 000000000000..f8f7f4571e44
--- /dev/null
+++ b/include/asm-avr32/arch-at32ap/irq.h
@@ -0,0 +1,14 @@
+#ifndef __ASM_AVR32_ARCH_IRQ_H
+#define __ASM_AVR32_ARCH_IRQ_H
+
+#define EIM_IRQ_BASE	NR_INTERNAL_IRQS
+#define NR_EIM_IRQS	32
+
+#define AT32_EXTINT(n)	(EIM_IRQ_BASE + (n))
+
+#define GPIO_IRQ_BASE	(EIM_IRQ_BASE + NR_EIM_IRQS)
+#define NR_GPIO_IRQS	(4 * 32)
+
+#define NR_IRQS		(GPIO_IRQ_BASE + NR_GPIO_IRQS)
+
+#endif /* __ASM_AVR32_ARCH_IRQ_H */
diff --git a/include/asm-avr32/arch-at32ap/portmux.h b/include/asm-avr32/arch-at32ap/portmux.h
index 83c690571322..2ba611e0e134 100644
--- a/include/asm-avr32/arch-at32ap/portmux.h
+++ b/include/asm-avr32/arch-at32ap/portmux.h
@@ -15,9 +15,10 @@
  *
  * The following flags determine the initial state of the pin.
  */
-#define AT32_GPIOF_PULLUP	0x00000001	/* Enable pull-up */
-#define AT32_GPIOF_OUTPUT	0x00000002	/* Enable output driver */
-#define AT32_GPIOF_HIGH		0x00000004	/* Set output high */
+#define AT32_GPIOF_PULLUP	0x00000001	/* (not-OUT) Enable pull-up */
+#define AT32_GPIOF_OUTPUT	0x00000002	/* (OUT) Enable output driver */
+#define AT32_GPIOF_HIGH		0x00000004	/* (OUT) Set output high */
+#define AT32_GPIOF_DEGLITCH	0x00000008	/* (IN) Filter glitches */
 
 void at32_select_periph(unsigned int pin, unsigned int periph,
 			unsigned long flags);
diff --git a/include/asm-avr32/gpio.h b/include/asm-avr32/gpio.h
new file mode 100644
index 000000000000..19e8ccc77db3
--- /dev/null
+++ b/include/asm-avr32/gpio.h
@@ -0,0 +1,6 @@
+#ifndef __ASM_AVR32_GPIO_H
+#define __ASM_AVR32_GPIO_H
+
+#include <asm/arch/gpio.h>
+
+#endif /* __ASM_AVR32_GPIO_H */
diff --git a/include/asm-avr32/irq.h b/include/asm-avr32/irq.h
index f7e725707dd7..83e6549d7783 100644
--- a/include/asm-avr32/irq.h
+++ b/include/asm-avr32/irq.h
@@ -2,8 +2,12 @@
 #define __ASM_AVR32_IRQ_H
 
 #define NR_INTERNAL_IRQS	64
-#define NR_EXTERNAL_IRQS	64
-#define NR_IRQS			(NR_INTERNAL_IRQS + NR_EXTERNAL_IRQS)
+
+#include <asm/arch/irq.h>
+
+#ifndef NR_IRQS
+#define NR_IRQS			(NR_INTERNAL_IRQS)
+#endif
 
 #define irq_canonicalize(i)	(i)
 
-- 
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