arch/arm/src/imxrt: added support for FlexPWM driver

Signed-off-by: Michal Lenc <michallenc@seznam.cz>

arch/arm/src/imxrt/Kconfig

@@ -170,6 +170,11 @@ config IMXRT_FLEXCAN
 	default n
 	select ARCH_HAVE_NETDEV_STATISTICS
 
+config IMXRT_FLEXPWM
+	bool
+	default n
+	select ARCH_HAVE_PWM_MULTICHAN
+
 config IMXRT_LPI2C
 	bool
 	default n
@@ -547,6 +552,246 @@ config FLEXCAN3_DATA_SAMPLEP
 
 endmenu # IMXRT_FLEXCAN3
 
+menu "FLEXPWM Peripherals"
+
+config IMXRT_FLEXPWM1
+	bool "FLEXPWM1"
+	default n
+	select IMXRT_FLEXPWM
+
+config IMXRT_FLEXPWM2
+	bool "FLEXPWM2"
+	default n
+	select IMXRT_FLEXPWM
+
+if ARCH_FAMILY_IMXRT105x || ARCH_FAMILY_IMXRT106x
+
+config IMXRT_FLEXPWM3
+	bool "FLEXPWM3"
+	default n
+	select IMXRT_FLEXPWM
+
+config IMXRT_FLEXPWM4
+	bool "FLEXPWM4"
+	default n
+	select IMXRT_FLEXPWM
+
+endif # ARCH_FAMILY_IMXRT105x || ARCH_FAMILY_IMXRT106x
+
+endmenu # FLEXPWM Peripherals
+
+menu "FLEXPWM1 Configuration"
+	depends on IMXRT_FLEXPWM1
+
+config IMXRT_FLEXPWM1_MOD1
+	bool "FLEXPWM1 Module 1"
+	default n
+
+if IMXRT_FLEXPWM1_MOD1
+
+config IMXRT_FLEXPWM1_MOD1_COMP
+	bool "Use complementary output"
+	default n
+
+endif
+
+config IMXRT_FLEXPWM1_MOD2
+	bool "FLEXPWM1 Module 2"
+	default n
+
+if IMXRT_FLEXPWM1_MOD2
+
+config IMXRT_FLEXPWM1_MOD2_COMP
+	bool "Use complementary output"
+	default n
+
+endif
+
+config IMXRT_FLEXPWM1_MOD3
+	bool "FLEXPWM1 Module 3"
+	default n
+
+if IMXRT_FLEXPWM1_MOD3
+
+config IMXRT_FLEXPWM1_MOD3_COMP
+	bool "Use complementary output"
+	default n
+
+endif
+
+config IMXRT_FLEXPWM1_MOD4
+	bool "FLEXPWM1 Module 4"
+	default n
+
+if IMXRT_FLEXPWM1_MOD4
+
+config IMXRT_FLEXPWM1_MOD4_COMP
+	bool "Use complementary output"
+	default n
+
+endif
+
+endmenu # IMXRT_FLEXPWM1
+
+menu "FLEXPWM2 Configuration"
+	depends on IMXRT_FLEXPWM2
+
+config IMXRT_FLEXPWM2_MOD1
+	bool "FLEXPWM2 Module 1"
+	default n
+
+if IMXRT_FLEXPWM2_MOD1
+
+config IMXRT_FLEXPWM2_MOD1_COMP
+	bool "Use complementary output"
+	default n
+
+endif
+
+config IMXRT_FLEXPWM2_MOD2
+	bool "FLEXPWM2 Module 2"
+	default n
+
+if IMXRT_FLEXPWM2_MOD2
+
+config IMXRT_FLEXPWM2_MOD2_COMP
+	bool "Use complementary output"
+	default n
+
+endif
+
+config IMXRT_FLEXPWM2_MOD3
+	bool "FLEXPWM2 Module 3"
+	default n
+
+if IMXRT_FLEXPWM2_MOD3
+
+config IMXRT_FLEXPWM2_MOD3_COMP
+	bool "Use complementary output"
+	default n
+
+endif
+
+config IMXRT_FLEXPWM2_MOD4
+	bool "FLEXPWM2 Module 4"
+	default n
+
+if IMXRT_FLEXPWM2_MOD4
+
+config IMXRT_FLEXPWM2_MOD4_COMP
+	bool "Use complementary output"
+	default n
+
+endif
+
+endmenu # IMXRT_FLEXPWM2
+
+menu "FLEXPWM3 Configuration"
+	depends on IMXRT_FLEXPWM3
+
+config IMXRT_FLEXPWM3_MOD1
+	bool "FLEXPWM3 Module 1"
+	default n
+
+if IMXRT_FLEXPWM3_MOD1
+
+config IMXRT_FLEXPWM3_MOD1_COMP
+	bool "Use complementary output"
+	default n
+
+endif
+
+config IMXRT_FLEXPWM3_MOD2
+	bool "FLEXPWM3 Module 2"
+	default n
+
+if IMXRT_FLEXPWM3_MOD2
+
+config IMXRT_FLEXPWM3_MOD2_COMP
+	bool "Use complementary output"
+	default n
+
+endif
+
+config IMXRT_FLEXPWM3_MOD3
+	bool "FLEXPWM3 Module 3"
+	default n
+
+if IMXRT_FLEXPWM3_MOD3
+
+config IMXRT_FLEXPWM3_MOD3_COMP
+	bool "Use complementary output"
+	default n
+
+endif
+
+config IMXRT_FLEXPWM3_MOD4
+	bool "FLEXPWM3 Module 4"
+	default n
+
+if IMXRT_FLEXPWM3_MOD4
+
+config IMXRT_FLEXPWM3_MOD4_COMP
+	bool "Use complementary output"
+	default n
+
+endif
+
+endmenu # IMXRT_FLEXPWM3
+
+menu "FLEXPWM4 Configuration"
+	depends on IMXRT_FLEXPWM4
+
+config IMXRT_FLEXPWM4_MOD1
+	bool "FLEXPWM4 Module 1"
+	default n
+
+if IMXRT_FLEXPWM4_MOD1
+
+config IMXRT_FLEXPWM4_MOD1_COMP
+	bool "Use complementary output"
+	default n
+
+endif
+
+config IMXRT_FLEXPWM4_MOD2
+	bool "FLEXPWM4 Module 2"
+	default n
+
+if IMXRT_FLEXPWM4_MOD2
+
+config IMXRT_FLEXPWM4_MOD2_COMP
+	bool "Use complementary output"
+	default n
+
+endif
+
+config IMXRT_FLEXPWM4_MOD3
+	bool "FLEXPWM4 Module 3"
+	default n
+
+if IMXRT_FLEXPWM4_MOD3
+
+config IMXRT_FLEXPWM4_MOD3_COMP
+	bool "Use complementary output"
+	default n
+
+endif
+
+config IMXRT_FLEXPWM4_MOD4
+	bool "FLEXPWM4 Module 4"
+	default n
+
+if IMXRT_FLEXPWM4_MOD4
+
+config IMXRT_FLEXPWM4_MOD4_COMP
+	bool "Use complementary output"
+	default n
+
+endif
+
+endmenu # IMXRT_FLEXPWM4
+
 menu "LPI2C Peripherals"
 
 menuconfig IMXRT_LPI2C1

arch/arm/src/imxrt/Make.defs

@@ -116,6 +116,10 @@ ifeq ($(CONFIG_IMXRT_FLEXCAN),y)
 CHIP_CSRCS += imxrt_flexcan.c
 endif
 
+ifeq ($(CONFIG_IMXRT_FLEXPWM),y)
+CHIP_CSRCS += imxrt_flexpwm.c
+endif
+
 ifeq ($(CONFIG_IMXRT_SNVS_LPSRTC),y)
 CHIP_CSRCS += imxrt_lpsrtc.c
 CHIP_CSRCS += imxrt_hprtc.c

arch/arm/src/imxrt/hardware/imxrt_iomuxc.h

@@ -154,6 +154,9 @@
 #define IOMUX_CAN_DEFAULT                     (IOMUX_SLEW_SLOW | \
                                                IOMUX_DRIVE_50OHM | IOMUX_SPEED_LOW )
 
+#define IOMUX_PWM_DEFAULT                     (IOMUX_SLEW_FAST | \
+                                               IOMUX_DRIVE_50OHM | IOMUX_SPEED_LOW )
+
 #define IOMUX_USDHC1_DATAX_DEFAULT            (IOMUX_SLEW_FAST | IOMUX_DRIVE_130OHM | \
                                                IOMUX_PULL_UP_47K | IOMUX_SCHMITT_TRIGGER)
 #define IOMUX_USDHC1_CMD_DEFAULT              (IOMUX_SLEW_FAST | IOMUX_DRIVE_130OHM | \

arch/arm/src/imxrt/imxrt_flexpwm.h

@@ -0,0 +1,78 @@
+/****************************************************************************
+ * arch/arm/src/imxrt/imxrt_flexpwm.h
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.  The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+#ifndef __ARCH_ARM_SRC_IMXRT_IMXRT_FLEXPWM_H
+#define __ARCH_ARM_SRC_IMXRT_IMXRT_FLEXPWM_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <nuttx/timers/pwm.h>
+
+#include "hardware/imxrt_flexpwm.h"
+
+#ifdef CONFIG_IMXRT_FLEXPWM
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+#ifndef __ASSEMBLY__
+
+#undef EXTERN
+#if defined(__cplusplus)
+#define EXTERN extern "C"
+extern "C"
+{
+#else
+#define EXTERN extern
+#endif
+
+/****************************************************************************
+ * Function: imxrt_pwminitialize
+ *
+ * Description:
+ *   Initialize the PWM module for use with the upper level PWM driver.
+ *
+ * Input Parameters:
+ *   pwm - a number identifying the PWM driver.
+ *
+ * Returned Value:
+ *   A pointer to the lower half PWM driver is returned on success,
+ *   NULL on failure.
+ *
+ ****************************************************************************/
+
+FAR struct pwm_lowerhalf_s *imxrt_pwminitialize(int pwm);
+
+#undef EXTERN
+#if defined(__cplusplus)
+}
+#endif
+
+#endif /* __ASSEMBLY__ */
+#endif /* CONFIG_IMXRT_FLEXPWM */
+#endif /* __ARCH_ARM_SRC_IMXRT_IMXRT_FLEXPWM_H */