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authorMagnus Damm <damm@igel.co.jp>2008-12-25 18:17:34 +0900
committerPaul Mundt <lethal@linux-sh.org>2009-01-27 14:49:10 +0900
commit69edbba0021a48fe034849501513930f6175cb5d (patch)
tree51499128883b2e84bce5dcaa78e6e943c37eeb40 /arch/sh/include/asm
parent3292094e88ce6b76714dad8ec4b43d7c5c12ada2 (diff)
sh: use gpiolib
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>
Diffstat (limited to 'arch/sh/include/asm')
-rw-r--r--arch/sh/include/asm/gpio.h61
1 files changed, 35 insertions, 26 deletions
diff --git a/arch/sh/include/asm/gpio.h b/arch/sh/include/asm/gpio.h
index 46a6d7914df..61f93da2c62 100644
--- a/arch/sh/include/asm/gpio.h
+++ b/arch/sh/include/asm/gpio.h
@@ -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 */