UCLASS_PARTITION device will be created as a child node of
UCLASS_BLK device.
Signed-off-by: AKASHI Takahiro <takahiro.aka...@linaro.org>
---
drivers/block/blk-uclass.c | 52 ++++++++++++++++++++++++++++++++++++++
include/dm/uclass-id.h | 1 +
2 files changed, 53 insertions(+)
diff --git a/drivers/block/blk-uclass.c b/drivers/block/blk-uclass.c
index baaf431e5e0c..d4ca30f23fc1 100644
--- a/drivers/block/blk-uclass.c
+++ b/drivers/block/blk-uclass.c
@@ -10,6 +10,8 @@
#include <dm/device-internal.h>
#include <dm/lists.h>
#include <dm/uclass-internal.h>
+#include <part.h>
+#include <string.h>
static const char *if_typename_str[IF_TYPE_COUNT] = {
[IF_TYPE_IDE] = "ide",
@@ -654,3 +656,53 @@ UCLASS_DRIVER(blk) = {
.post_probe = blk_post_probe,
.per_device_platdata_auto_alloc_size = sizeof(struct blk_desc),
};
+
+U_BOOT_DRIVER(blk_partition) = {
+ .name = "blk_partition",
+ .id = UCLASS_PARTITION,
+ .platdata_auto_alloc_size = sizeof(struct disk_part),
+};
+
+UCLASS_DRIVER(partition) = {
+ .id = UCLASS_PARTITION,
+ .name = "partition",
+};
+
+#if defined(CONFIG_PARTITIONS) && defined(CONFIG_HAVE_BLOCK_DEVICE)
+int blk_create_partitions(struct udevice *parent)
+{
+ int part;
+ struct blk_desc *desc = dev_get_uclass_platdata(parent);
+ disk_partition_t info;
+ struct disk_part *part_data;
+ char devname[32];
+ struct udevice *dev;
+ int disks = 0, ret;
+
+ /* Add devices for each partition */
+ for (part = 1; part <= MAX_SEARCH_PARTITIONS; part++) {
+ if (part_get_info(desc, part, &info))
+ continue;
+ snprintf(devname, sizeof(devname), "%s:%d", parent->name,
+ part);
+
+ ret = device_bind_driver(parent, "blk_partition",
+ strdup(devname), &dev);
+ if (ret)
+ return ret;
+
+ part_data = dev_get_uclass_platdata(dev);
+ part_data->partnum = part;
+ part_data->gpt_part_info = info;
+
+ disks++;
+ }
+
+ return disks;
+}
+#else
+int blk_create_partitions(struct udevice *dev)
+{
+ return 0;
+}
+#endif
diff --git a/include/dm/uclass-id.h b/include/dm/uclass-id.h
index f3bafb3c6353..e02b5f8fda42 100644
--- a/include/dm/uclass-id.h
+++ b/include/dm/uclass-id.h
@@ -65,6 +65,7 @@ enum uclass_id {
UCLASS_NVME, /* NVM Express device */
UCLASS_PANEL, /* Display panel, such as an LCD */
UCLASS_PANEL_BACKLIGHT, /* Backlight controller for panel */
+ UCLASS_PARTITION, /* Logical disk partition device */
UCLASS_PCH, /* x86 platform controller hub */
UCLASS_PCI, /* PCI bus */
UCLASS_PCI_GENERIC, /* Generic PCI bus device */
--
2.19.1
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