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[AVR32] GPIO API implementation

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

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
This commit is contained in:
Haavard Skinnemoen
2007-02-05 16:57:13 +01:00
parent 10b50b7dd2
commit 6a4e5227a3
8 changed files with 278 additions and 21 deletions
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include/asm-avr32/arch-at32ap/gpio.h
+27
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@@ -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 */
include/asm-avr32/arch-at32ap/irq.h
+14
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@@ -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 */
include/asm-avr32/arch-at32ap/portmux.h
+4 -3
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@@ -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);
include/asm-avr32/gpio.h
+6
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@@ -0,0 +1,6 @@
#ifndef __ASM_AVR32_GPIO_H
#define __ASM_AVR32_GPIO_H
#include <asm/arch/gpio.h>
#endif /* __ASM_AVR32_GPIO_H */
include/asm-avr32/irq.h
+6 -2
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@@ -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)