L61: Sensor: Add sensor driver for LSM6DSO.

N/A

Add driver for the STMicro LSM6DSO.

Change-Id: I462a2912cf8c7f141f285e482c8222bdb854b5ee
Signed-off-by: yangjiukui <yangjiukui@xiaomi.com>

drivers/sensors/Kconfig

@@ -126,6 +126,29 @@ config SENSORS_BMG160
 	---help---
 		Enable driver support for the Bosch BMG160 gyroscope sensor.
 
+config SENSORS_LSM6DSO
+	bool "STMicro LSM6DSO support"
+	default n
+	select SPI
+	select IOEXPANDER
+	---help---
+		Enable driver support for the STMicro LSM6DSO sensor.
+
+config SENSORS_LSM6DSO_BUFFER_NUMBER
+	int "The nunmber of circular buffer for sensor LSM6DSO"
+	default 1
+	depends on SENSORS_LSM6DSO
+	---help---
+		The size of the circular buffer used. If the value equal to zero,
+		indicates that the circular buffer is disabled.
+
+config SENSORS_LSM6DSO_FIFO_SLOTS_NUMBER
+	int "The nunmber of fifo slots for sensor LSM6DSO"
+	default 10
+	depends on SENSORS_LSM6DSO
+	---help---
+		The nunmber of fifo slots for sensor LSM6DSO.
+
 config SENSORS_OPT3006
 	bool "TI OPT3006 Ambient Light Sensor support"
 	default n

drivers/sensors/Make.defs

@@ -124,6 +124,10 @@ ifeq ($(CONFIG_SENSORS_OPT3007),y)
   CSRCS += opt3007.c
 endif
 
+ifeq ($(CONFIG_SENSORS_LSM6DSO),y)
+  CSRCS += lsm6dso.c
+endif
+
 ifeq ($(CONFIG_SENSORS_BMG160),y)
   CSRCS += bmg160.c
 endif

include/nuttx/sensors/lsm6dso.h

@@ -0,0 +1,95 @@
+/****************************************************************************
+ * include/nuttx/sensors/lsm6dso.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 __INCLUDE_NUTTX_SENSORS_LSM6DSO_H
+#define __INCLUDE_NUTTX_SENSORS_LSM6DSO_H
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+#include <nuttx/spi/spi.h>
+#include <nuttx/spi/spi_transfer.h>
+#include <nuttx/ioexpander/ioexpander.h>
+
+#if defined CONFIG_SENSORS_LSM6DSO
+
+/****************************************************************************
+ * Pre-processor Definitions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Types
+ ****************************************************************************/
+
+struct lsm6dso_config_s
+{
+  int pin;                                /* Interrupt pin */
+  int freq;                               /* SPI frequency */
+  uint32_t cs;                            /* SPI cs pin */
+  FAR struct spi_dev_s *spi;              /* SPI interface */
+  FAR struct ioexpander_dev_s *ioedev;    /* Ioexpander device */
+};
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+#ifdef __cplusplus
+#define EXTERN extern "C"
+extern "C"
+{
+#else
+#define EXTERN extern
+#endif
+
+/****************************************************************************
+ * Inline Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Function Prototypes
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: lsm6dso_register
+ *
+ * Description:
+ *   Register the LSM6DSO character device as 'devpath'
+ *
+ * Input Parameters:
+ *   devpath - The full path to the driver to register. E.g., "/dev/accel0"
+ *   config  - Board config.
+ *
+ * Returned Value:
+ *   Zero (OK) on success; a negated errno value on failure.
+ *
+ ****************************************************************************/
+
+int lsm6dso_register(int devno, FAR const struct lsm6dso_config_s *config);
+
+#undef EXTERN
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* CONFIG_SENSORS_LSM6DSO */
+#endif /* __INCLUDE_NUTTX_SENSORS_LSM6DSO_H */