drivers: adc: Add Microchip MCP3914 SPI 8ch ADC driver

drivers/adc/CMakeLists.txt

@@ -49,3 +49,4 @@ zephyr_library_sources_ifdef(CONFIG_ADC_MAX11102_17	adc_max11102_17.c)
 zephyr_library_sources_ifdef(CONFIG_ADC_AD5592	        adc_ad5592.c)
 zephyr_library_sources_ifdef(CONFIG_ADC_LTC2451 adc_ltc2451.c)
 zephyr_library_sources_ifdef(CONFIG_ADC_NUMAKER         adc_numaker.c)
+zephyr_library_sources_ifdef(CONFIG_ADC_MCP3914		adc_mcp3914.c)

drivers/adc/Kconfig

@@ -121,4 +121,6 @@ source "drivers/adc/Kconfig.ltc2451"
 
 source "drivers/adc/Kconfig.numaker"
 
+source "drivers/adc/Kconfig.mcp3914"
+
 endif # ADC

drivers/adc/Kconfig.mcp3914

@@ -0,0 +1,43 @@
+# Copyright 2013 EVOS Energy Pty Ltd
+#
+#  Licensed 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.
+
+# MCP3914 ADC configuration options
+
+config ADC_MCP3914
+	bool "MCP3914 driver"
+	default y
+	depends on DT_HAS_MICROCHIP_MCP3914_ENABLED
+	select SPI
+	help
+	  Enable MCP3914 ADC driver.
+
+	  The MCP3914 is an 8 channel 24-bit A/D converter
+	  with SPI interface.
+
+if ADC_MCP3914
+
+config ADC_MCP3914_ACQUISITION_THREAD_STACK_SIZE
+	int "Stack size for the ADC data acquisition thread"
+	default 768
+	help
+	  Size of the stack used for the internal data acquisition
+	  thread.
+
+config ADC_MCP3914_ACQUISITION_THREAD_PRIO
+	int "Priority for the ADC data acquisition thread"
+	default -5
+	help
+	  Priority level for the internal ADC data acquisition thread.
+
+endif # ADC_MCP3914