drivers: sensors: add driver for the magnetometer in lsm9ds1

This driver supports the magnetometer in the ST lsm9ds1 sensor, on the
I2C bus.
This driver does not support the triggers.
This driver use the stmemsc HAL.

link: https://www.st.com/resource/en/datasheet/lsm9ds1.pdf

Signed-off-by: Miguel Gazquez <miguel.gazquez@bootlin.com>

Author: miggazElquez

drivers/sensor/st/CMakeLists.txt

@@ -33,6 +33,7 @@ add_subdirectory_ifdef(CONFIG_LSM6DSV16X lsm6dsv16x)
 add_subdirectory_ifdef(CONFIG_LSM9DS0_GYRO lsm9ds0_gyro)
 add_subdirectory_ifdef(CONFIG_LSM9DS0_MFD lsm9ds0_mfd)
 add_subdirectory_ifdef(CONFIG_LSM9DS1 lsm9ds1)
+add_subdirectory_ifdef(CONFIG_LSM9DS1_MAG lsm9ds1_mag)
 add_subdirectory_ifdef(CONFIG_QDEC_STM32 qdec_stm32)
 add_subdirectory_ifdef(CONFIG_STM32_DIGI_TEMP stm32_digi_temp)
 add_subdirectory_ifdef(CONFIG_STM32_TEMP stm32_temp)

drivers/sensor/st/Kconfig

@@ -32,6 +32,7 @@ source "drivers/sensor/st/lsm6dsv16x/Kconfig"
 source "drivers/sensor/st/lsm9ds0_gyro/Kconfig"
 source "drivers/sensor/st/lsm9ds0_mfd/Kconfig"
 source "drivers/sensor/st/lsm9ds1/Kconfig"
+source "drivers/sensor/st/lsm9ds1_mag/Kconfig"
 source "drivers/sensor/st/qdec_stm32/Kconfig"
 source "drivers/sensor/st/stm32_digi_temp/Kconfig"
 source "drivers/sensor/st/stm32_temp/Kconfig"

drivers/sensor/st/lsm9ds1_mag/CMakeLists.txt

@@ -0,0 +1,7 @@
+# SPDX-License-Identifier: Apache-2.0
+
+zephyr_library()
+
+zephyr_library_sources(lsm9ds1_mag.c)
+
+zephyr_library_include_directories(../stmemsc)

drivers/sensor/st/lsm9ds1_mag/Kconfig

@@ -0,0 +1,10 @@
+# Copyright (c) 2024 Bootlin
+# SPDX-License-Identifier: Apache-2.0
+
+config LSM9DS1_MAG
+	bool "LSM9DS1 I2C magnetometer chip"
+	default y
+	depends on DT_HAS_ST_LSM9DS1_MAG_ENABLED
+	select I2C
+	select HAS_STMEMSC
+	select USE_STDC_LSM9DS1