drivers: add periph_sdmmc support

drivers/Kconfig

@@ -161,6 +161,7 @@ rsource "mtd_sdcard/Kconfig"
 rsource "nvram/Kconfig"
 rsource "nvram_spi/Kconfig"
 rsource "sdcard_spi/Kconfig"
+rsource "sdmmc/Kconfig"
 endmenu # Storage Device Drivers
 
 endmenu # Drivers

drivers/mtd/Kconfig

@@ -38,6 +38,21 @@ config HAVE_MTD_SDCARD
     help
         Indicates that a sdcard MTD is present
 
+config HAVE_MTD_SDMMC_DEFAULT
+    bool
+    depends on HAS_PERIPH_SDMMC
+    imply MODULE_MTD_SDMMC if MODULE_MTD
+    imply MODULE_MTD_SDMMC_DEFAULT if MODULE_MTD
+    help
+        Indicates that a SD/MMC MTD is present with generic configuration
+
+config HAVE_MTD_SDMMC
+    bool
+    depends on HAS_PERIPH_SDMMC
+    imply MODULE_MTD_SDMMC if MODULE_MTD
+    help
+        Indicates that a SD/MMC MTD is present
+
 config HAVE_MTD_SPI_NOR
     bool
     imply MODULE_MTD_SPI_NOR if MODULE_MTD
@@ -46,13 +61,13 @@ config HAVE_MTD_SPI_NOR
 
 config HAVE_SAM0_SDHC
     bool
-    imply MODULE_SAM0_SDHC if MODULE_MTD
+    imply MODULE_SAM0_SDHC if MODULE_MTD && !MODULE_MTD_SDMMC
     help
         Indicates that a SAM0 SD Host Controller MTD is present
 
 config HAVE_MTD_SPI_MCI
     bool
-    imply MODULE_MTD_MCI if MODULE_MTD
+    imply MODULE_MTD_MCI if MODULE_MTD && !MODULE_MTD_SDMMC
     help
         Indicates that a Multimedia Card Interface (MCI) MTD is present
 
@@ -62,7 +77,7 @@ menuconfig MODULE_MTD
 
 if MODULE_MTD
 
-menu "MTD Interefaces"
+menu "MTD Interfaces"
 
 config MODULE_MTD_SPI_NOR
     bool "MTD interface for SPI NOR Flash"
@@ -95,22 +110,33 @@ config MODULE_MTD_MCI
     depends on CPU_FAM_LPC23XX
     select MODULE_MCI
 
+config MODULE_MTD_SDCARD
+    bool "MTD interface for SPI SD-Card"
+    depends on MODULE_SDCARD_SPI
+
 config MODULE_MTD_SDCARD_DEFAULT
     bool "Use Generic SD card configuration"
     depends on MODULE_MTD_SDCARD
     help
         Automatically create a MTD device and mount point for the SD card.
 
-config MODULE_MTD_SDCARD
-    bool "MTD interface for SPI SD-Card"
-    depends on MODULE_SDCARD_SPI
+config MODULE_MTD_SDMMC
+    bool "MTD interface for SD/MMC"
+    depends on HAS_PERIPH_SDMMC
+    select MODULE_PERIPH_SDMMC
+
+config MODULE_MTD_SDMMC_DEFAULT
+    bool "Use Generic SD/MMC card configuration"
+    depends on MODULE_MTD_SDMMC
+    help
+        Automatically create a MTD device and mount point for the SD/MMC card.
 
 config MODULE_MTD_EMULATED
     bool "MTD interface for MTD emulated in RAM"
 
 config MODULE_SAM0_SDHC
     bool "MTD interface for SAM0 SD Host Controller"
-    depends on CPU_COMMON_SAM0
+    depends on CPU_COMMON_SAM0 && HAVE_SAM0_SDHC && !MODULE_PERIPH_SDMMC
 
 endmenu # MTD Interfacs
 

drivers/periph_common/Kconfig

@@ -153,6 +153,7 @@ config MODULE_PERIPH_INIT_RTT
     default y if MODULE_PERIPH_INIT
     depends on MODULE_PERIPH_RTT
 
+rsource "Kconfig.sdmmc"
 rsource "Kconfig.spi"
 
 config MODULE_PERIPH_TEMPERATURE

drivers/periph_common/Kconfig.sdmmc

@@ -0,0 +1,62 @@
+# Copyright (c) 2020 HAW Hamburg
+#
+# This file is subject to the terms and conditions of the GNU Lesser
+# General Public License v2.1. See the file LICENSE in the top level
+# directory for more details.
+#
+
+menuconfig MODULE_PERIPH_SDMMC
+    bool "SDIO/SD/MMC peripheral driver"
+    depends on HAS_PERIPH_SDMMC
+    select MODULE_PERIPH_COMMON
+
+if MODULE_PERIPH_SDMMC
+
+config MODULE_PERIPH_INIT_SDMMC
+    bool "Auto initialize SDIO/SD/MMC peripheral"
+    default y if MODULE_PERIPH_INIT
+
+config MODULE_PERIPH_SDMMC_8BIT
+    bool "8 Bit data bus support"
+    depends on HAS_PERIPH_SDMMC_8BIT
+    default y
+    help
+        If the SDIO/SD/MMC peripheral supports the 8-bit bus width, it can be
+        used by enabling this option. If the option is disabled, the driver
+        requires less RAM and ROM.
+
+config MODULE_PERIPH_INIT_SDMMC_8BIT
+    bool
+    depends on MODULE_PERIPH_SDMMC_8BIT
+    default y if MODULE_PERIPH_INIT
+
+config MODULE_PERIPH_SDMMC_HS
+    bool "High speed access"
+    depends on HAS_PERIPH_SDMMC_HS
+    default y
+    help
+        If the SDIO/SD/MMC peripheral supports the high speed access, i.e. 50
+        MHz for SD and 52 MHz for MMC, it can be used by enabling this option.
+        If the option is disabled, the driver requires less RAM and ROM.
+
+config MODULE_PERIPH_INIT_SDMMC_HS
+    bool
+    depends on MODULE_PERIPH_SDMMC_HS
+    default y if MODULE_PERIPH_INIT
+
+config MODULE_PERIPH_SDMMC_AUTO_CLK
+    bool
+    depends on HAS_PERIPH_SDMMC_AUTO_CLK
+    default y
+    help
+        If the SDIO/SD/MMC peripheral supports the Auto-CLK feature, i.e.
+        the automatic activation and deactivation of the SD CLK signal,
+        it is enabled automatically by this option. Otherwise, the activation
+        and deactivation is controlled by SDIO/SD/MMC high-level functions.
+
+config MODULE_PERIPH_INIT_SDMMC_AUTO_CLK
+    bool
+    depends on MODULE_PERIPH_SDMMC_AUTO_CLK
+    default y if MODULE_PERIPH_INIT
+
+endif # MODULE_PERIPH_SDMMC

drivers/periph_common/init.c

@@ -57,6 +57,9 @@
 #ifdef MODULE_PERIPH_INIT_PIO
 #include "periph/pio.h"
 #endif
+#ifdef MODULE_PERIPH_INIT_SDMMC
+#include "sdmmc/sdmmc.h"
+#endif
 #endif /* MODULE_PERIPH_INIT */
 
 void periph_init(void)
@@ -133,5 +136,11 @@ void periph_init(void)
     pio_start_programs();
 #endif
 
+#if defined(MODULE_PERIPH_INIT_SDMMC)
+    for (unsigned i = 0; i < SDMMC_NUMOF; i++) {
+        sdmmc_init(sdmmc_get_dev(i));
+    }
+#endif
+
 #endif /* MODULE_PERIPH_INIT */
 }

drivers/sdmmc/Kconfig

@@ -0,0 +1,22 @@
+# Copyright (c) 2020 HAW Hamburg
+#
+# This file is subject to the terms and conditions of the GNU Lesser
+# General Public License v2.1. See the file LICENSE in the top level
+# directory for more details.
+#
+
+config MODULE_SDMMC
+    bool "SDIO/SD/MMC interface"
+    depends on HAS_PERIPH_SDMMC
+    select MODULE_PERIPH_SDMMC
+    select MODULE_ZTIMER_MSEC if !ZTIMER_USEC
+
+if MODULE_SDMMC
+
+config MODULE_SDMMC_MMC
+    bool "MMC support"
+    depends on HAS_PERIPH_SDMMC_MMC
+    help
+        Say y to support MMCs/eMMCs.
+
+endif # MODULE_SDMMC

drivers/sdmmc/Makefile

@@ -0,0 +1,3 @@
+MODULE = sdmmc
+
+include $(RIOTBASE)/Makefile.base

drivers/sdmmc/Makefile.dep

@@ -0,0 +1,13 @@
+FEATURES_REQUIRED += periph_sdmmc
+FEATURES_OPTIONAL += periph_sdmmc_auto_clk
+FEATURES_OPTIONAL += periph_sdmmc_auto_cmd12
+FEATURES_OPTIONAL += periph_sdmmc_hs
+
+ifneq (,$(filter sdmmc_mmc,$(USEMODULE)))
+  FEATURES_REQUIRED += periph_sdmmc_mmc
+endif
+
+ifeq (,$(filter ztimer_usec,$(USEMODULE)))
+  # enable ztimer_msec backend if ztimer_usec is not enabled
+  USEMODULE += ztimer_msec
+endif

drivers/sdmmc/Makefile.include

@@ -0,0 +1 @@
+PSEUDOMODULES += sdmmc_mmc

kconfigs/Kconfig.features

@@ -410,6 +410,55 @@ config HAS_PERIPH_RTT_OVERFLOW
     help
         Indicates that the RTT provides an overflow callback.
 
+config HAS_PERIPH_SDMMC
+    bool
+    help
+        Indicates that an SDIO/SD/MMC peripheral is present and used by the
+        board. This feature shall be provided by the board configuration,
+        if available.
+
+config HAS_PERIPH_SDMMC_8BIT
+    bool
+    help
+        Indicates that the SDIO/SD/MMC peripheral supports the 8-bit bus width
+        and at least one component of the board is connected with 8 data lines.
+        This feature shall be provided by the board configuration, if available.
+
+config HAS_PERIPH_SDMMC_AUTO_CLK
+    bool
+    help
+        Indicates that the SDIO/SD/MMC peripheral supports the Auto-CLK
+        feature, i.e. the automatic activation and deactivation of the SD CLK
+        signal when required. This feature shall be provided by the MCU
+        if supported.
+
+config HAS_PERIPH_SDMMC_AUTO_CMD12
+    bool
+    help
+        Indicates that the SDIO/SD/MMC peripheral supports the Auto-CMD12
+        feature, i.e. CMD12 is sent automatically to stop the transmission in
+        multiple block operations. This feature shall be provided by the MCU
+        if supported.
+
+config HAS_PERIPH_SDMMC_CLK
+    bool
+    help
+        Indicates that the SDIO/SD/MMC peripheral has special clock
+        functionality used by the peripheral driver.
+
+config HAS_PERIPH_SDMMC_HS
+    bool
+    help
+        Indicates that the SDIO/SD/MMC peripheral supports the high speed
+        access, that is 50 MHz for SD and 52 MHz for MMC. This feature shall be
+        provided by the MCU.
+
+config HAS_PERIPH_SDMMC_MMC
+    bool
+    help
+        Indicates that the SDIO/SD/MMC peripheral supports MMC/eMMCs. This
+        feature shall be provided by the MCU.
+
 config HAS_PERIPH_SPI
     bool
     help