dm: mmc: Add an MMC uclass
Add basic support for MMC, providing a uclass which can set up an MMC
device. This allows MMC drivers to move to using driver model.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/mmc/Kconfig b/drivers/mmc/Kconfig
index 7ba85a2..3e835f7 100644
--- a/drivers/mmc/Kconfig
+++ b/drivers/mmc/Kconfig
@@ -1,5 +1,15 @@
menu "MMC Host controller Support"
+config DM_MMC
+ bool "Enable MMC controllers using Driver Model"
+ depends on DM
+ help
+ This enables the MultiMediaCard (MMC) uclass which suports MMC and
+ Secure Digital I/O (SDIO) cards. Both removable (SD, micro-SD, etc.)
+ and non-removable (e.g. eMMC chip) devices are supported. These
+ appear as block devices in U-Boot and can support filesystems such
+ as EXT4 and FAT.
+
config SH_SDHI
bool "SuperH/Renesas ARM SoCs on-chip SDHI host controller support"
depends on RMOBILE
diff --git a/drivers/mmc/Makefile b/drivers/mmc/Makefile
index ed73687..2680c63 100644
--- a/drivers/mmc/Makefile
+++ b/drivers/mmc/Makefile
@@ -5,6 +5,8 @@
# SPDX-License-Identifier: GPL-2.0+
#
+obj-$(CONFIG_DM_MMC) += mmc-uclass.o
+
obj-$(CONFIG_ARM_PL180_MMCI) += arm_pl180_mmci.o
obj-$(CONFIG_BCM2835_SDHCI) += bcm2835_sdhci.o
obj-$(CONFIG_BFIN_SDH) += bfin_sdh.o
diff --git a/drivers/mmc/mmc-uclass.c b/drivers/mmc/mmc-uclass.c
new file mode 100644
index 0000000..777489f
--- /dev/null
+++ b/drivers/mmc/mmc-uclass.c
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2015 Google, Inc
+ * Written by Simon Glass <sjg@chromium.org>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <mmc.h>
+#include <dm.h>
+#include <dm/lists.h>
+#include <dm/root.h>
+
+struct mmc *mmc_get_mmc_dev(struct udevice *dev)
+{
+ struct mmc_uclass_priv *upriv;
+
+ if (!device_active(dev))
+ return NULL;
+ upriv = dev_get_uclass_priv(dev);
+ return upriv->mmc;
+}
+
+U_BOOT_DRIVER(mmc) = {
+ .name = "mmc",
+ .id = UCLASS_MMC,
+};
+
+UCLASS_DRIVER(mmc) = {
+ .id = UCLASS_MMC,
+ .name = "mmc",
+ .flags = DM_UC_FLAG_SEQ_ALIAS,
+ .per_device_auto_alloc_size = sizeof(struct mmc_uclass_priv),
+};
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c
index 79e6fee..4eab274 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -1761,8 +1761,10 @@
INIT_LIST_HEAD (&mmc_devices);
cur_dev_num = 0;
+#ifndef CONFIG_DM_MMC
if (board_mmc_init(bis) < 0)
cpu_mmc_init(bis);
+#endif
#ifndef CONFIG_SPL_BUILD
print_mmc_devices(',');