DA8xx: add generic GPIO driver
Add a generic GPIO driver for the DaVinci DA8xx processors. It is turned
on by defining CONFIG_DA8XX_GPIO and fulfills the generic GPIO interface
specified in <asm/gpio.h> . The driver has support for both manipulating
GPIO pins as well as automatically configuring the pin multiplexor
registers to set the pin function to GPIO.
Signed-off-by: Laurence Withers <lwithers@guralp.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
diff --git a/arch/arm/include/asm/arch-davinci/gpio.h b/arch/arm/include/asm/arch-davinci/gpio.h
index 1be2ac2..29dcccf 100644
--- a/arch/arm/include/asm/arch-davinci/gpio.h
+++ b/arch/arm/include/asm/arch-davinci/gpio.h
@@ -63,4 +63,12 @@
#define davinci_gpio_bank45 ((struct davinci_gpio *)DAVINCI_GPIO_BANK45)
#define davinci_gpio_bank67 ((struct davinci_gpio *)DAVINCI_GPIO_BANK67)
+#define gpio_status() gpio_info()
+#define GPIO_NAME_SIZE 20
+#define MAX_NUM_GPIOS 144
+#define GPIO_BANK(gp) (davinci_gpio_bank01 + ((gp) >> 5))
+#define GPIO_BIT(gp) ((gp) & 0x1F)
+
+void gpio_info(void);
+
#endif