drivers/periph_common: add periph_init_leds to init all on-board LEDs

dist/tools/doccheck/exclude_patterns

@@ -1327,7 +1327,7 @@ boards/common/nucleo144/include/arduino_pinmap\.h:[0-9]+: warning: Member ARDUIN
 boards/common/nucleo144/include/arduino_pinmap\.h:[0-9]+: warning: Member ARDUINO_PIN_A4 \(macro definition\) of file arduino_pinmap\.h is not documented\.
 boards/common/nucleo144/include/arduino_pinmap\.h:[0-9]+: warning: Member ARDUINO_PIN_A5 \(macro definition\) of file arduino_pinmap\.h is not documented\.
 boards/common/nucleo144/include/arduino_pinmap\.h:[0-9]+: warning: end of file with unbalanced grouping commands
-boards/common/nucleo144/include/board\.h:[0-9]+: warning: Member AUTO_INIT_LED0 \(macro definition\) of group boards_common_nucleo144 is not documented\.
+boards/common/nucleo144/include/board\.h:[0-9]+: warning: Member PERIPH_INIT_LED0 \(macro definition\) of group boards_common_nucleo144 is not documented\.
 boards/common/nucleo144/include/board\.h:[0-9]+: warning: Member BTN0_MODE \(macro definition\) of group boards_common_nucleo144 is not documented\.
 boards/common/nucleo144/include/board\.h:[0-9]+: warning: Member BTN0_PIN \(macro definition\) of group boards_common_nucleo144 is not documented\.
 boards/common/nucleo144/include/board\.h:[0-9]+: warning: Member LED0_MASK \(macro definition\) of group boards_common_nucleo144 is not documented\.

drivers/periph_common/Kconfig

@@ -115,6 +115,7 @@ config MODULE_PERIPH_INIT_QDEC
     default y if MODULE_PERIPH_INIT
     depends on MODULE_PERIPH_QDEC
 
+rsource "Kconfig.leds"
 rsource "Kconfig.rtc"
 
 config MODULE_PERIPH_RTT

drivers/periph_common/Kconfig.leds

@@ -0,0 +1,69 @@
+# Copyright (c) 2022 Inria
+#
+# This file is subject to the terms and conditions of the GNU Lesser
+# General Public License v2.1. See the file LICENSE in the top level
+# directory for more details.
+#
+
+config MODULE_PERIPH_INIT_LEDS
+    bool
+    default y
+    depends on TEST_KCONFIG
+    help
+        Enable auto initialization of board leds
+
+config MODULE_PERIPH_INIT_LED0
+    bool
+    default y
+    depends on MODULE_PERIPH_INIT_LEDS
+    help
+        Enable auto initialization of LED0 if present
+
+config MODULE_PERIPH_INIT_LED1
+    bool
+    default y
+    depends on MODULE_PERIPH_INIT_LEDS
+    help
+        Enable auto initialization of LED1 if present
+
+config MODULE_PERIPH_INIT_LED2
+    bool
+    default y
+    depends on MODULE_PERIPH_INIT_LEDS
+    help
+        Enable auto initialization of LED2 if present
+
+config MODULE_PERIPH_INIT_LED3
+    bool
+    default y
+    depends on MODULE_PERIPH_INIT_LEDS
+    help
+        Enable auto initialization of LED3 if present
+
+config MODULE_PERIPH_INIT_LED4
+    bool
+    default y
+    depends on MODULE_PERIPH_INIT_LEDS
+    help
+        Enable auto initialization of LED4 if present
+
+config MODULE_PERIPH_INIT_LED5
+    bool
+    default y
+    depends on MODULE_PERIPH_INIT_LEDS
+    help
+        Enable auto initialization of LED5 if present
+
+config MODULE_PERIPH_INIT_LED6
+    bool
+    default y
+    depends on MODULE_PERIPH_INIT_LEDS
+    help
+        Enable auto initialization of LED6 if present
+
+config MODULE_PERIPH_INIT_LED7
+    bool
+    default y
+    depends on MODULE_PERIPH_INIT_LEDS
+    help
+        Enable auto initialization of LED7 if present

drivers/periph_common/init.c

@@ -22,6 +22,7 @@
 
 #define USB_H_USER_IS_RIOT_INTERNAL
 
+#include "kernel_defines.h"
 #include "periph_cpu.h"
 
 #ifdef MODULE_PERIPH_INIT
@@ -54,6 +55,11 @@
 void periph_init(void)
 {
 #ifdef MODULE_PERIPH_INIT
+    /* initialize leds */
+    if (IS_USED(MODULE_PERIPH_INIT_LEDS)) {
+        extern void led_init(void);
+        led_init();
+    }
     /* initialize configured I2C devices */
 #ifdef MODULE_PERIPH_INIT_I2C
     for (unsigned i = 0; i < I2C_NUMOF; i++) {

drivers/periph_common/init_leds.c

@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2022 ML!PA Consulting GmbH
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @ingroup     drivers_periph_init
+ * @{
+ *
+ * @file
+ * @brief       Init on board LEDs
+ *
+ * @author      Benjamin Valentin <benjamin.valentin@ml-pa.com>
+ * @}
+ */
+
+#include "board.h"
+#include "periph/gpio.h"
+#include "kernel_defines.h"
+
+#define LED_INIT(x) do {                                            \
+                        if (IS_ACTIVE(MODULE_PERIPH_INIT_LED##x)) {   \
+                            gpio_init(LED##x##_PIN, GPIO_OUT);      \
+                            LED##x##_OFF;                           \
+                        }                                           \
+                    } while (0)
+
+__attribute__ ((weak))
+void led_init(void)
+{
+    if (!IS_USED(MODULE_PERIPH_GPIO)) {
+        return;
+    }
+
+#ifdef LED0_PIN
+    LED_INIT(0);
+#endif
+#ifdef LED1_PIN
+    LED_INIT(1);
+#endif
+#ifdef LED2_PIN
+    LED_INIT(2);
+#endif
+#ifdef LED3_PIN
+    LED_INIT(3);
+#endif
+#ifdef LED4_PIN
+    LED_INIT(4);
+#endif
+#ifdef LED5_PIN
+    LED_INIT(5);
+#endif
+#ifdef LED6_PIN
+    LED_INIT(6);
+#endif
+#ifdef LED7_PIN
+    LED_INIT(7);
+#endif
+}

sys/auto_init/leds/Makefile

@@ -0,0 +1,3 @@
+MODULE = periph_init_leds
+
+include $(RIOTMAKE)/auto_init.inc.mk