[AVR32] add multidrive support for pio driver

This patch add multidrive support for pio driver

Signed-off-by: Matteo Vit - Dave S.r.l. <matteo.vit@dave.eu>
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>

2 files changed, 5 insertions, 0 deletions

diff --git a/arch/avr32/mach-at32ap/pio.c b/arch/avr32/mach-at32ap/pio.c
index 1eb99b814f5b..d61a02da898c 100644
--- a/arch/avr32/mach-at32ap/pio.c
+++ b/arch/avr32/mach-at32ap/pio.c
@@ -110,6 +110,10 @@ void __init at32_select_gpio(unsigned int pin, unsigned long flags)
                         pio_writel(pio, SODR, mask);
                 else
                         pio_writel(pio, CODR, mask);
+                if (flags & AT32_GPIOF_MULTIDRV)
+                        pio_writel(pio, MDER, mask);
+                else
+                        pio_writel(pio, MDDR, mask);
                 pio_writel(pio, PUDR, mask);
                 pio_writel(pio, OER, mask);
         } else {
diff --git a/include/asm-avr32/arch-at32ap/portmux.h b/include/asm-avr32/arch-at32ap/portmux.h
index 9930871decde..b1abe6b4e4ef 100644
--- a/include/asm-avr32/arch-at32ap/portmux.h
+++ b/include/asm-avr32/arch-at32ap/portmux.h
@@ -19,6 +19,7 @@
 #define AT32_GPIOF_OUTPUT       0x00000002      /* (OUT) Enable output driver */
 #define AT32_GPIOF_HIGH         0x00000004      /* (OUT) Set output high */
 #define AT32_GPIOF_DEGLITCH     0x00000008      /* (IN) Filter glitches */
+#define AT32_GPIOF_MULTIDRV     0x00000010      /* Enable multidriver option */
 
 void at32_select_periph(unsigned int pin, unsigned int periph,
                         unsigned long flags);