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authorMark Brown <broonie@opensource.wolfsonmicro.com>2012-04-15 13:52:54 +0400
committerGrant Likely <grant.likely@secretlab.ca>2012-05-12 04:00:14 +0400
commit7563bbf89d065a2c3f05059ecbcc805645edcc62 (patch)
tree2b8231e8145a73cce0da67ce38e0360fcd0a802e /include/linux/gpio.h
parent25cf25073a4e1e0563c288908481f10f98acb19a (diff)
downloadlinux-7563bbf89d065a2c3f05059ecbcc805645edcc62.tar.xz
gpiolib/arches: Centralise bolierplate asm/gpio.h
Rather than requiring architectures that use gpiolib but don't have any need to define anything custom to copy an asm/gpio.h provide a Kconfig symbol which architectures must select in order to include gpio.h and for other architectures just provide the trivial implementation directly. This makes it much easier to do gpiolib updates and is also a step towards making gpiolib APIs available on every architecture. For architectures with existing boilerplate code leave a stub header in place which warns on direct inclusion of asm/gpio.h and includes linux/gpio.h to catch code that's doing this. Direct inclusion of asm/gpio.h has long been deprecated. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Jonas Bonn <jonas@southpole.se> Acked-by: Tony Luck <tony.luck@intel.com> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'include/linux/gpio.h')
-rw-r--r--include/linux/gpio.h34
1 files changed, 34 insertions, 0 deletions
diff --git a/include/linux/gpio.h b/include/linux/gpio.h
index d1890d46b6ce..7a8816a1a0d8 100644
--- a/include/linux/gpio.h
+++ b/include/linux/gpio.h
@@ -1,6 +1,8 @@
#ifndef __LINUX_GPIO_H
#define __LINUX_GPIO_H
+#include <linux/errno.h>
+
/* see Documentation/gpio.txt */
/* make these flag values available regardless of GPIO kconfig options */
@@ -38,7 +40,39 @@ struct gpio {
};
#ifdef CONFIG_GENERIC_GPIO
+
+#ifdef CONFIG_ARCH_HAVE_CUSTOM_GPIO_H
#include <asm/gpio.h>
+#else
+
+#include <asm-generic/gpio.h>
+
+static inline int gpio_get_value(unsigned int gpio)
+{
+ return __gpio_get_value(gpio);
+}
+
+static inline void gpio_set_value(unsigned int gpio, int value)
+{
+ __gpio_set_value(gpio, value);
+}
+
+static inline int gpio_cansleep(unsigned int gpio)
+{
+ return __gpio_cansleep(gpio);
+}
+
+static inline int gpio_to_irq(unsigned int gpio)
+{
+ return __gpio_to_irq(gpio);
+}
+
+static inline int irq_to_gpio(unsigned int irq)
+{
+ return -EINVAL;
+}
+
+#endif
#else