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sh: use gpiolib

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This patch updates the SuperH gpio code to make use of gpiolib. The
gpiolib callbacks get() and set() are lockless, but we use our own
spinlock for the other operations to make sure hardware register
bitfield accesses stay atomic.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Magnus Damm
2008-12-25 18:17:34 +09:00
committed by Paul Mundt
parent 3292094e88
commit 69edbba002
7 changed files with 100 additions and 84 deletions
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61
arch/sh/include/asm/gpio.h
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@@ -19,6 +19,40 @@
#include <cpu/gpio.h>
#endif
#define ARCH_NR_GPIOS 512
#include <asm-generic/gpio.h>
#ifdef CONFIG_GPIOLIB
static inline int gpio_get_value(unsigned gpio)
{
return __gpio_get_value(gpio);
}
static inline void gpio_set_value(unsigned gpio, int value)
{
__gpio_set_value(gpio, value);
}
static inline int gpio_cansleep(unsigned gpio)
{
return __gpio_cansleep(gpio);
}
static inline int gpio_to_irq(unsigned gpio)
{
WARN_ON(1);
return -ENOSYS;
}
static inline int irq_to_gpio(unsigned int irq)
{
WARN_ON(1);
return -EINVAL;
}
#endif /* CONFIG_GPIOLIB */
typedef unsigned short pinmux_enum_t;
typedef unsigned short pinmux_flag_t;
@@ -94,34 +128,9 @@ struct pinmux_info {
unsigned int gpio_data_size;
unsigned long *gpio_in_use;
struct gpio_chip chip;
};
int register_pinmux(struct pinmux_info *pip);
int __gpio_request(unsigned gpio);
static inline int gpio_request(unsigned gpio, const char *label)
{
return __gpio_request(gpio);
}
void gpio_free(unsigned gpio);
int gpio_direction_input(unsigned gpio);
int gpio_direction_output(unsigned gpio, int value);
int gpio_get_value(unsigned gpio);
void gpio_set_value(unsigned gpio, int value);
/* IRQ modes are unspported */
static inline int gpio_to_irq(unsigned gpio)
{
WARN_ON(1);
return -EINVAL;
}
static inline int irq_to_gpio(unsigned irq)
{
WARN_ON(1);
return -EINVAL;
}
#include <asm-generic/gpio.h>
#endif /* __ASM_SH_GPIO_H */