can: add support for MSCAN module of KEA MCU family

Signed-off-by: Anton Gerasimov <[email protected]>

cpu/kinetis/Makefile.features

@@ -4,6 +4,7 @@ FEATURES_PROVIDED += periph_gpio
 FEATURES_PROVIDED += periph_gpio_irq
 ifeq (EA,$(KINETIS_SERIES))
 FEATURES_PROVIDED += periph_ics
+FEATURES_PROVIDED += periph_mscan
 else
 FEATURES_PROVIDED += periph_mcg
 endif

cpu/kinetis/include/mscan.h

@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2018 HERE Deutschland 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.
+ */
+
+/**
+ * @defgroup    cpu_kinetis_mscan MSCAN driver
+ * @ingroup     cpu_kinetis
+ * @brief       Implementation of the driver for CAN controller in Kinetis KEA
+ *              MCUs
+ *
+ * @{
+ *
+ * @file
+ * @brief       Interface definition for the MSCAN driver.
+ *
+ * @author      Anton Gerasimov <[email protected]>
+ */
+
+#ifndef MSCAN_H
+#define MSCAN_H
+
+#include "can/candev.h"
+#include "can/device.h"
+
+#ifndef CANDEV_KEA_DEFAULT_BITRATE
+/**
+ * Default bitrate setup
+ */
+#define CANDEV_KEA_DEFAULT_BITRATE (50000)
+#endif
+
+#ifndef CANDEV_KEA_DEFAULT_SPT
+/**
+ * Default sampling point setup
+ */
+#define CANDEV_KEA_DEFAULT_SPT (875)
+#endif
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+/**
+ * @brief Board-specific MSCAN configuration
+ */
+typedef struct candev_kea_conf {
+    uint32_t clock_freq;    /**< input clock frequency */
+    candev_params_t params; /**< device parameters */
+} candev_kea_conf_t;
+
+/**
+ * @brief MSCAN-specific "subclass" of candev_t
+ */
+typedef struct candev_kea {
+    candev_t candev;               /**< candev base structure */
+    canopt_state_t mode;           /**< power state */
+    const candev_kea_conf_t *conf; /**< device configuration */
+
+} candev_kea_t;
+
+/**
+ * @brief Initialize device with configuration
+ *
+ * @return 0 on success
+ * @return <0 on error
+ */
+int candev_kea_init(candev_kea_t *dev, const candev_kea_conf_t *conf);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* MSCAN_H */
+
+/** @} */