From e7ecf7cb5a6b873daf2d88daf03034d51fad4acc Mon Sep 17 00:00:00 2001
From: Simon Glass
Date: Tue, 23 Jun 2015 15:38:48 -0600
Subject: 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>
---
 drivers/mmc/Kconfig      | 10 ++++++++++
 drivers/mmc/Makefile     |  2 ++
 drivers/mmc/mmc-uclass.c | 34 ++++++++++++++++++++++++++++++++++
 drivers/mmc/mmc.c        |  2 ++
 4 files changed, 48 insertions(+)
 create mode 100644 drivers/mmc/mmc-uclass.c

(limited to 'drivers/mmc')

diff --git a/drivers/mmc/Kconfig b/drivers/mmc/Kconfig
index 7ba85a2b62c..3e835f7bca0 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 ed736877351..2680c6342b1 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 00000000000..777489f5d8e
--- /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 79e6feeb13a..4eab274f732 100644
--- a/drivers/mmc/mmc.c
+++ b/drivers/mmc/mmc.c
@@ -1761,8 +1761,10 @@ int mmc_initialize(bd_t *bis)
 	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(',');
-- 
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