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authorSimon Glass <sjg@chromium.org>2016-05-01 13:52:39 -0600
committerSimon Glass <sjg@chromium.org>2016-05-17 09:54:43 -0600
commit8ef761ed4cda2d078b3d8b098d105472cbad8fb5 (patch)
treecd8038b690e2fdb47755f8b91a2e59f9313b3c68 /drivers
parentf8b7752e8f42c6f0bb8725f2488e398c849a7bf4 (diff)
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dm: mmc: Implement the MMC functions for block devices
Implement the functions in mmc_legacy.c for driver-model block devices, so that MMC can use driver model for these. This allows CONFIG_BLK to be enabled with DM_MMC. Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/mmc/Makefile4
-rw-r--r--drivers/mmc/mmc-uclass.c106
2 files changed, 109 insertions, 1 deletions
diff --git a/drivers/mmc/Makefile b/drivers/mmc/Makefile
index 38a172b..3da4817 100644
--- a/drivers/mmc/Makefile
+++ b/drivers/mmc/Makefile
@@ -5,7 +5,9 @@
# SPDX-License-Identifier: GPL-2.0+
#
-obj-$(CONFIG_DM_MMC) += mmc-uclass.o
+ifdef CONFIG_DM_MMC
+obj-$(CONFIG_GENERIC_MMC) += mmc-uclass.o
+endif
ifndef CONFIG_BLK
obj-$(CONFIG_GENERIC_MMC) += mmc_legacy.o
diff --git a/drivers/mmc/mmc-uclass.c b/drivers/mmc/mmc-uclass.c
index 777489f..1b967d9 100644
--- a/drivers/mmc/mmc-uclass.c
+++ b/drivers/mmc/mmc-uclass.c
@@ -21,6 +21,112 @@ struct mmc *mmc_get_mmc_dev(struct udevice *dev)
return upriv->mmc;
}
+#ifdef CONFIG_BLK
+struct mmc *find_mmc_device(int dev_num)
+{
+ struct udevice *dev, *mmc_dev;
+ int ret;
+
+ ret = blk_get_device(IF_TYPE_MMC, dev_num, &dev);
+
+ if (ret) {
+#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
+ printf("MMC Device %d not found\n", dev_num);
+#endif
+ return NULL;
+ }
+
+ mmc_dev = dev_get_parent(dev);
+
+ return mmc_get_mmc_dev(mmc_dev);
+}
+
+int get_mmc_num(void)
+{
+ return max(blk_find_max_devnum(IF_TYPE_MMC), 0);
+}
+
+int mmc_get_next_devnum(void)
+{
+ int ret;
+
+ ret = get_mmc_num();
+ if (ret < 0)
+ return ret;
+
+ return ret + 1;
+}
+
+struct blk_desc *mmc_get_blk_desc(struct mmc *mmc)
+{
+ struct blk_desc *desc;
+ struct udevice *dev;
+
+ device_find_first_child(mmc->dev, &dev);
+ if (!dev)
+ return NULL;
+ desc = dev_get_uclass_platdata(dev);
+
+ return desc;
+}
+
+void mmc_do_preinit(void)
+{
+ struct udevice *dev;
+ struct uclass *uc;
+ int ret;
+
+ ret = uclass_get(UCLASS_MMC, &uc);
+ if (ret)
+ return;
+ uclass_foreach_dev(dev, uc) {
+ struct mmc *m = mmc_get_mmc_dev(dev);
+
+ if (!m)
+ continue;
+#ifdef CONFIG_FSL_ESDHC_ADAPTER_IDENT
+ mmc_set_preinit(m, 1);
+#endif
+ if (m->preinit)
+ mmc_start_init(m);
+ }
+}
+
+#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
+void print_mmc_devices(char separator)
+{
+ struct udevice *dev;
+ char *mmc_type;
+ bool first = true;
+
+ for (uclass_first_device(UCLASS_MMC, &dev);
+ dev;
+ uclass_next_device(&dev)) {
+ struct mmc *m = mmc_get_mmc_dev(dev);
+
+ if (!first) {
+ printf("%c", separator);
+ if (separator != '\n')
+ puts(" ");
+ }
+ if (m->has_init)
+ mmc_type = IS_SD(m) ? "SD" : "eMMC";
+ else
+ mmc_type = NULL;
+
+ printf("%s: %d", m->cfg->name, mmc_get_blk_desc(m)->devnum);
+ if (mmc_type)
+ printf(" (%s)", mmc_type);
+ }
+
+ printf("\n");
+}
+
+#else
+void print_mmc_devices(char separator) { }
+#endif
+#endif /* CONFIG_BLK */
+
U_BOOT_DRIVER(mmc) = {
.name = "mmc",
.id = UCLASS_MMC,