From 06a05370a203bc45a48c953910df2e2a3d9ea599 Mon Sep 17 00:00:00 2001
From: Marian Buschsieweke <marian.buschsieweke@posteo.net>
Date: Tue, 23 Jan 2024 08:15:28 +0100
Subject: [PATCH] cpu/sam0_common: Implement gpio_ll_switch_dir

---
 cpu/sam0_common/Makefile.features      |  1 +
 cpu/sam0_common/include/gpio_ll_arch.h | 12 ++++++++++++
 2 files changed, 13 insertions(+)

diff --git a/cpu/sam0_common/Makefile.features b/cpu/sam0_common/Makefile.features
index 8915115c6bc3..184942584b19 100644
--- a/cpu/sam0_common/Makefile.features
+++ b/cpu/sam0_common/Makefile.features
@@ -21,6 +21,7 @@ FEATURES_PROVIDED += periph_gpio_ll_irq
 FEATURES_PROVIDED += periph_gpio_ll_irq_level_triggered_high
 FEATURES_PROVIDED += periph_gpio_ll_irq_level_triggered_low
 FEATURES_PROVIDED += periph_gpio_ll_irq_unmask
+FEATURES_PROVIDED += periph_gpio_ll_switch_dir
 FEATURES_PROVIDED += periph_i2c_reconfigure
 FEATURES_PROVIDED += periph_rtt_overflow
 FEATURES_PROVIDED += periph_rtt_set_counter
diff --git a/cpu/sam0_common/include/gpio_ll_arch.h b/cpu/sam0_common/include/gpio_ll_arch.h
index 8f72b1997cd2..02b25c7c1e1f 100644
--- a/cpu/sam0_common/include/gpio_ll_arch.h
+++ b/cpu/sam0_common/include/gpio_ll_arch.h
@@ -106,6 +106,18 @@ static inline void gpio_ll_write(gpio_port_t port, uword_t mask)
     p->OUT.reg = mask;
 }
 
+static inline void gpio_ll_switch_dir_output(gpio_port_t port, uword_t outputs)
+{
+    PortGroup *p = (PortGroup *)port;
+    p->DIRSET.reg = outputs;
+}
+
+static inline void gpio_ll_switch_dir_input(gpio_port_t port, uword_t inputs)
+{
+    PortGroup *p = (PortGroup *)port;
+    p->DIRCLR.reg = inputs;
+}
+
 static inline gpio_port_t gpio_get_port(gpio_t pin)
 {
     return (gpio_port_t)(pin & ~(0x1f));