drivers/mmc: Add support for bus driver

Bus driver support is needed for nrf53 but it
can be used with any MCU that has SPI driver
support (in contrast to just SPI HAL)

Signed-off-by: Jerzy Kasenberg <jerzy.kasenberg@codecoup.pl>

hw/drivers/mmc/include/mmc/mmc.h

@@ -22,6 +22,9 @@
 
 #include "os/mynewt.h"
 #include <disk/disk.h>
+#if MYNEWT_VAL(BUS_DRIVER_PRESENT)
+#include <bus/drivers/spi_common.h>
+#endif
 
 #ifdef __cplusplus
 extern "C" {
@@ -96,6 +99,17 @@ mmc_write(uint8_t mmc_id, uint32_t addr, const void *buf, uint32_t len);
 int
 mmc_ioctl(uint8_t mmc_id, uint32_t cmd, void *arg);
 
+#if MYNEWT_VAL(BUS_DRIVER_PRESENT)
+struct mmc_config {
+    struct bus_spi_node_cfg spi_cfg;
+};
+struct mmc {
+    struct bus_spi_node node;
+};
+
+int mmc_create_dev(struct mmc *mmc, const char *name, struct mmc_config *mmc_cfg);
+#endif
+
 #ifdef __cplusplus
 }
 #endif

hw/drivers/mmc/pkg.yml

@@ -25,3 +25,9 @@ pkg.keywords:
 
 pkg.deps:
     - "@apache-mynewt-core/hw/hal"
+
+pkg.deps.BUS_DRIVER_PRESENT:
+    - "@apache-mynewt-core/hw/bus/drivers/spi_common"
+
+pkg.init.MMC_AUTO_MOUNT:
+    mmc_pkg_init: MYNEWT_VAL(MMC_PKG_SYSINIT_STAGE)