drivers: i2c: add nrf twis suppport

Add nrf twis (I2C controller supporting I2C peripheral role and
EasyDMA) support, including updating the existing twis dt binding
to match the hardware with proper examples.

Signed-off-by: Bjarki Arge Andreasen <[email protected]>

Author: bjarki-andreasen

drivers/i2c/CMakeLists.txt

@@ -67,6 +67,7 @@ else()
 		i2c_nrfx_twim_common.c
 	)
 endif()
+zephyr_library_sources_ifdef(CONFIG_I2C_NRFX_TWIS	i2c_nrfx_twis.c)
 zephyr_library_sources_ifdef(CONFIG_I2C_NUMAKER		i2c_numaker.c)
 zephyr_library_sources_ifdef(CONFIG_I2C_SAM_TWI		i2c_sam_twi.c)
 if(CONFIG_I2C_RTIO)

drivers/i2c/Kconfig.nrfx

@@ -49,4 +49,33 @@ config I2C_NRFX_TRANSFER_TIMEOUT
 	  0 means that the driver should use the K_FOREVER value,
 	  i.e. it should wait as long as necessary.
 
+config I2C_NRFX_TWIS
+	def_bool y
+	depends on DT_HAS_NORDIC_NRF_TWIS_ENABLED
+	depends on I2C_TARGET
+	depends on I2C_TARGET_BUFFER_MODE
+	select NRFX_TWIS0 if HAS_HW_NRF_TWIS0
+	select NRFX_TWIS1 if HAS_HW_NRF_TWIS1
+	select NRFX_TWIS2 if HAS_HW_NRF_TWIS2
+	select NRFX_TWIS3 if HAS_HW_NRF_TWIS3
+	select NRFX_TWIS20 if HAS_HW_NRF_TWIS20
+	select NRFX_TWIS21 if HAS_HW_NRF_TWIS21
+	select NRFX_TWIS22 if HAS_HW_NRF_TWIS22
+	select NRFX_TWIS30 if HAS_HW_NRF_TWIS30
+	select NRFX_TWIS130 if HAS_HW_NRF_TWIS130
+	select NRFX_TWIS131 if HAS_HW_NRF_TWIS131
+	select NRFX_TWIS133 if HAS_HW_NRF_TWIS133
+	select NRFX_TWIS134 if HAS_HW_NRF_TWIS134
+	select NRFX_TWIS135 if HAS_HW_NRF_TWIS135
+	select NRFX_TWIS136 if HAS_HW_NRF_TWIS136
+	select NRFX_TWIS137 if HAS_HW_NRF_TWIS137
+
+if I2C_NRFX_TWIS
+
+config I2C_NRFX_TWIS_BUF_SIZE
+	int "DMA buffer size in bytes"
+	default 64
+
+endif # I2C_NRFX_TWIS
+
 endif # I2C_NRFX