Signed-off-by: Anton Vorontsov <[EMAIL PROTECTED]>
---
Hello David,
I'm interested in your opinion about that patch. You're also Cc'ed
to patch that using that feature.
I know, currently that patch will conflict with GPIOLIB patches in -mm,
so this is only RFC.
include/asm-generic/gpio.h | 47 ++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 47 insertions(+), 0 deletions(-)
diff --git a/include/asm-generic/gpio.h b/include/asm-generic/gpio.h
index 2d0aab1..cf76a69 100644
--- a/include/asm-generic/gpio.h
+++ b/include/asm-generic/gpio.h
@@ -1,6 +1,53 @@
#ifndef _ASM_GENERIC_GPIO_H
#define _ASM_GENERIC_GPIO_H
+#ifndef CONFIG_GENERIC_GPIO
+
+/*
+ * Drivers could be gpio api aware, and at the same time, some
+ * of them can live without it, or support call-backs approach
+ * in addition. Let them link.
+ */
+static inline int gpio_request(unsigned int gpio, const char *label)
+{
+ return -ENOSYS;
+}
+
+static inline void gpio_free(unsigned int gpio)
+{
+}
+
+static inline int gpio_direction_input(unsigned int gpio)
+{
+ return -ENOSYS;
+}
+
+static inline int gpio_direction_output(unsigned int gpio, int value)
+{
+ return -ENOSYS;
+}
+
+static inline int gpio_get_value(unsigned int gpio)
+{
+ return -ENOSYS;
+}
+
+static inline void gpio_set_value(unsigned int gpio, int value)
+{
+}
+
+static inline int gpio_to_irq(unsigned int gpio)
+{
+ return -ENOSYS;
+}
+
+static inline int irq_to_gpio(unsigned int irq)
+{
+ return -ENOSYS;
+}
+
+#endif /* CONFIG_GENERIC_GPIO */
+
/* platforms that don't directly support access to GPIOs through I2C, SPI,
* or other blocking infrastructure can use these wrappers.
*/
--
1.5.2.2
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