drivers: sdhc: add driver support for emmc host controller

add host controller driver support for emmc version 5.1.
The driver expose zephyr sdhc api interface for emmc host controller.

Signed-off-by: Najumon B.A <najumon.ba@intel.com>

drivers/sdhc/CMakeLists.txt

@@ -7,5 +7,5 @@ zephyr_library_sources_ifdef(CONFIG_IMX_USDHC imx_usdhc.c)
 zephyr_library_sources_ifdef(CONFIG_SPI_SDHC sdhc_spi.c)
 zephyr_library_sources_ifdef(CONFIG_MCUX_SDIF mcux_sdif.c)
 zephyr_library_sources_ifdef(CONFIG_SAM_HSMCI sam_hsmci.c)
-
+zephyr_library_sources_ifdef(CONFIG_INTEL_EMMC_HOST intel_emmc_host.c)
 endif()

drivers/sdhc/Kconfig

@@ -12,6 +12,7 @@ source "drivers/sdhc/Kconfig.imx"
 source "drivers/sdhc/Kconfig.spi"
 source "drivers/sdhc/Kconfig.mcux_sdif"
 source "drivers/sdhc/Kconfig.sam_hsmci"
+source "drivers/sdhc/Kconfig.intel"
 
 config SDHC_INIT_PRIORITY
 	int "SDHC driver init priority"
@@ -50,5 +51,4 @@ module = SDHC
 module-str = sdhc
 source "subsys/logging/Kconfig.template.log_config"
 
-
 endif # SDHC

drivers/sdhc/Kconfig.intel

@@ -0,0 +1,57 @@
+# Copyright (c) 2023 Intel Corporation
+# SPDX-License-Identifier: Apache-2.0
+
+config INTEL_EMMC_HOST
+	bool "EMMC driver"
+	select SDHC_SUPPORTS_NATIVE_MODE
+	select EVENTS
+	default y
+	depends on DT_HAS_INTEL_EMMC_HOST_ENABLED
+	help
+	  EMMC driver support. Though this driver can be easily port to
+	  any HW which is complaint to eMMC spec, currently it is only
+	  validated using intel's EMMC host controller.
+
+if INTEL_EMMC_HOST
+config INTEL_EMMC_HOST_INTR
+	bool "EMMC host controller interrupt mode"
+	default y
+	help
+	  EMMC host controller interrupt mode support.
+
+config INTEL_EMMC_HOST_DMA
+	bool "EMMC host controller DMA mode"
+	select DCACHE
+	help
+	  EMMC host controller DMA mode support.
+
+config INTEL_EMMC_HOST_ADMA
+	bool "EMMC host controller ADMA mode"
+	depends on INTEL_EMMC_HOST_DMA
+	help
+	  EMMC host controller ADMA mode support.
+
+config INTEL_EMMC_HOST_ADMA_DESC_SIZE
+	int "EMMC host controller ADMA Descriptor size"
+	default 32
+	help
+	  EMMC host controller ADMA Descriptor size.
+
+config INTEL_EMMC_HOST_AUTO_STOP
+	bool "auto stop command mode"
+	default y
+	help
+	  Auto stop command mode support.
+
+config INTEL_EMMC_HOST_BLOCK_GAP
+	bool "Block gap mode"
+	depends on INTEL_EMMC_HOST_DMA
+	help
+	  Block gap mode support.
+
+config INTEL_EMMC_HOST_TUNING
+	bool "Host tuning"
+	help
+	  Host tuning support.
+
+endif