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-rw-r--r--drivers/core/device-remove.c16
-rw-r--r--drivers/core/device.c121
-rw-r--r--drivers/core/root.c8
-rw-r--r--drivers/core/uclass.c34
4 files changed, 139 insertions, 40 deletions
diff --git a/drivers/core/device-remove.c b/drivers/core/device-remove.c
index 8fc6b71..3a5f48d 100644
--- a/drivers/core/device-remove.c
+++ b/drivers/core/device-remove.c
@@ -88,6 +88,14 @@ int device_unbind(struct udevice *dev)
if (ret)
return ret;
+ if (dev->flags & DM_FLAG_ALLOC_PDATA) {
+ free(dev->platdata);
+ dev->platdata = NULL;
+ }
+ if (dev->flags & DM_FLAG_ALLOC_PARENT_PDATA) {
+ free(dev->parent_platdata);
+ dev->parent_platdata = NULL;
+ }
ret = uclass_unbind_device(dev);
if (ret)
return ret;
@@ -111,10 +119,6 @@ void device_free(struct udevice *dev)
free(dev->priv);
dev->priv = NULL;
}
- if (dev->flags & DM_FLAG_ALLOC_PDATA) {
- free(dev->platdata);
- dev->platdata = NULL;
- }
size = dev->uclass->uc_drv->per_device_auto_alloc_size;
if (size) {
free(dev->uclass_priv);
@@ -122,6 +126,10 @@ void device_free(struct udevice *dev)
}
if (dev->parent) {
size = dev->parent->driver->per_child_auto_alloc_size;
+ if (!size) {
+ size = dev->parent->uclass->uc_drv->
+ per_child_auto_alloc_size;
+ }
if (size) {
free(dev->parent_priv);
dev->parent_priv = NULL;
diff --git a/drivers/core/device.c b/drivers/core/device.c
index 963b16f..b73d3b8 100644
--- a/drivers/core/device.c
+++ b/drivers/core/device.c
@@ -53,27 +53,47 @@ int device_bind(struct udevice *parent, struct driver *drv, const char *name,
dev->driver = drv;
dev->uclass = uc;
- /*
- * For some devices, such as a SPI or I2C bus, the 'reg' property
- * is a reasonable indicator of the sequence number. But if there is
- * an alias, we use that in preference. In any case, this is just
- * a 'requested' sequence, and will be resolved (and ->seq updated)
- * when the device is probed.
- */
dev->seq = -1;
+ dev->req_seq = -1;
#ifdef CONFIG_OF_CONTROL
- dev->req_seq = fdtdec_get_int(gd->fdt_blob, of_offset, "reg", -1);
- if (!IS_ERR_VALUE(dev->req_seq))
- dev->req_seq &= INT_MAX;
- if (uc->uc_drv->name && of_offset != -1) {
- fdtdec_get_alias_seq(gd->fdt_blob, uc->uc_drv->name, of_offset,
- &dev->req_seq);
+ /*
+ * Some devices, such as a SPI bus, I2C bus and serial ports are
+ * numbered using aliases.
+ *
+ * This is just a 'requested' sequence, and will be
+ * resolved (and ->seq updated) when the device is probed.
+ */
+ if (uc->uc_drv->flags & DM_UC_FLAG_SEQ_ALIAS) {
+ if (uc->uc_drv->name && of_offset != -1) {
+ fdtdec_get_alias_seq(gd->fdt_blob, uc->uc_drv->name,
+ of_offset, &dev->req_seq);
+ }
}
-#else
- dev->req_seq = -1;
#endif
- if (!dev->platdata && drv->platdata_auto_alloc_size)
+ if (!dev->platdata && drv->platdata_auto_alloc_size) {
dev->flags |= DM_FLAG_ALLOC_PDATA;
+ dev->platdata = calloc(1, drv->platdata_auto_alloc_size);
+ if (!dev->platdata) {
+ ret = -ENOMEM;
+ goto fail_alloc1;
+ }
+ }
+ if (parent) {
+ int size = parent->driver->per_child_platdata_auto_alloc_size;
+
+ if (!size) {
+ size = parent->uclass->uc_drv->
+ per_child_platdata_auto_alloc_size;
+ }
+ if (size) {
+ dev->flags |= DM_FLAG_ALLOC_PARENT_PDATA;
+ dev->parent_platdata = calloc(1, size);
+ if (!dev->parent_platdata) {
+ ret = -ENOMEM;
+ goto fail_alloc2;
+ }
+ }
+ }
/* put dev into parent's successor list */
if (parent)
@@ -81,28 +101,51 @@ int device_bind(struct udevice *parent, struct driver *drv, const char *name,
ret = uclass_bind_device(dev);
if (ret)
- goto fail_bind;
+ goto fail_uclass_bind;
/* if we fail to bind we remove device from successors and free it */
if (drv->bind) {
ret = drv->bind(dev);
- if (ret) {
- if (uclass_unbind_device(dev)) {
- dm_warn("Failed to unbind dev '%s' on error path\n",
- dev->name);
- }
+ if (ret)
goto fail_bind;
- }
}
+ if (parent && parent->driver->child_post_bind) {
+ ret = parent->driver->child_post_bind(dev);
+ if (ret)
+ goto fail_child_post_bind;
+ }
+
if (parent)
dm_dbg("Bound device %s to %s\n", dev->name, parent->name);
*devp = dev;
return 0;
+fail_child_post_bind:
+ if (drv->unbind && drv->unbind(dev)) {
+ dm_warn("unbind() method failed on dev '%s' on error path\n",
+ dev->name);
+ }
+
fail_bind:
+ if (uclass_unbind_device(dev)) {
+ dm_warn("Failed to unbind dev '%s' on error path\n",
+ dev->name);
+ }
+fail_uclass_bind:
list_del(&dev->sibling_node);
+ if (dev->flags & DM_FLAG_ALLOC_PARENT_PDATA) {
+ free(dev->parent_platdata);
+ dev->parent_platdata = NULL;
+ }
+fail_alloc2:
+ if (dev->flags & DM_FLAG_ALLOC_PDATA) {
+ free(dev->platdata);
+ dev->platdata = NULL;
+ }
+fail_alloc1:
free(dev);
+
return ret;
}
@@ -137,7 +180,7 @@ int device_probe_child(struct udevice *dev, void *parent_priv)
drv = dev->driver;
assert(drv);
- /* Allocate private data and platdata if requested */
+ /* Allocate private data if requested */
if (drv->priv_auto_alloc_size) {
dev->priv = calloc(1, drv->priv_auto_alloc_size);
if (!dev->priv) {
@@ -146,13 +189,6 @@ int device_probe_child(struct udevice *dev, void *parent_priv)
}
}
/* Allocate private data if requested */
- if (dev->flags & DM_FLAG_ALLOC_PDATA) {
- dev->platdata = calloc(1, drv->platdata_auto_alloc_size);
- if (!dev->platdata) {
- ret = -ENOMEM;
- goto fail;
- }
- }
size = dev->uclass->uc_drv->per_device_auto_alloc_size;
if (size) {
dev->uclass_priv = calloc(1, size);
@@ -165,6 +201,10 @@ int device_probe_child(struct udevice *dev, void *parent_priv)
/* Ensure all parents are probed */
if (dev->parent) {
size = dev->parent->driver->per_child_auto_alloc_size;
+ if (!size) {
+ size = dev->parent->uclass->uc_drv->
+ per_child_auto_alloc_size;
+ }
if (size) {
dev->parent_priv = calloc(1, size);
if (!dev->parent_priv) {
@@ -187,6 +227,10 @@ int device_probe_child(struct udevice *dev, void *parent_priv)
}
dev->seq = seq;
+ ret = uclass_pre_probe_child(dev);
+ if (ret)
+ goto fail;
+
if (dev->parent && dev->parent->driver->child_pre_probe) {
ret = dev->parent->driver->child_pre_probe(dev);
if (ret)
@@ -241,6 +285,16 @@ void *dev_get_platdata(struct udevice *dev)
return dev->platdata;
}
+void *dev_get_parent_platdata(struct udevice *dev)
+{
+ if (!dev) {
+ dm_warn("%s: null device", __func__);
+ return NULL;
+ }
+
+ return dev->parent_platdata;
+}
+
void *dev_get_priv(struct udevice *dev)
{
if (!dev) {
@@ -390,3 +444,8 @@ ulong dev_get_of_data(struct udevice *dev)
{
return dev->of_id->data;
}
+
+enum uclass_id device_get_uclass_id(struct udevice *dev)
+{
+ return dev->uclass->uc_drv->id;
+}
diff --git a/drivers/core/root.c b/drivers/core/root.c
index 47b3acf..73e3c72 100644
--- a/drivers/core/root.c
+++ b/drivers/core/root.c
@@ -9,6 +9,7 @@
#include <common.h>
#include <errno.h>
+#include <fdtdec.h>
#include <malloc.h>
#include <libfdt.h>
#include <dm/device.h>
@@ -49,6 +50,9 @@ int dm_init(void)
ret = device_bind_by_name(NULL, false, &root_info, &DM_ROOT_NON_CONST);
if (ret)
return ret;
+#ifdef CONFIG_OF_CONTROL
+ DM_ROOT_NON_CONST->of_offset = 0;
+#endif
ret = device_probe(DM_ROOT_NON_CONST);
if (ret)
return ret;
@@ -89,6 +93,10 @@ int dm_scan_fdt_node(struct udevice *parent, const void *blob, int offset,
if (pre_reloc_only &&
!fdt_getprop(blob, offset, "u-boot,dm-pre-reloc", NULL))
continue;
+ if (!fdtdec_get_is_enabled(blob, offset)) {
+ dm_dbg(" - ignoring disabled device\n");
+ continue;
+ }
err = lists_bind_fdt(parent, blob, offset, NULL);
if (err && !ret)
ret = err;
diff --git a/drivers/core/uclass.c b/drivers/core/uclass.c
index 901b06e..289a5d2 100644
--- a/drivers/core/uclass.c
+++ b/drivers/core/uclass.c
@@ -319,18 +319,29 @@ int uclass_bind_device(struct udevice *dev)
int ret;
uc = dev->uclass;
-
list_add_tail(&dev->uclass_node, &uc->dev_head);
+ if (dev->parent) {
+ struct uclass_driver *uc_drv = dev->parent->uclass->uc_drv;
+
+ if (uc_drv->child_post_bind) {
+ ret = uc_drv->child_post_bind(dev);
+ if (ret)
+ goto err;
+ }
+ }
if (uc->uc_drv->post_bind) {
ret = uc->uc_drv->post_bind(dev);
- if (ret) {
- list_del(&dev->uclass_node);
- return ret;
- }
+ if (ret)
+ goto err;
}
return 0;
+err:
+ /* There is no need to undo the parent's post_bind call */
+ list_del(&dev->uclass_node);
+
+ return ret;
}
int uclass_unbind_device(struct udevice *dev)
@@ -380,6 +391,19 @@ int uclass_resolve_seq(struct udevice *dev)
return seq;
}
+int uclass_pre_probe_child(struct udevice *dev)
+{
+ struct uclass_driver *uc_drv;
+
+ if (!dev->parent)
+ return 0;
+ uc_drv = dev->parent->uclass->uc_drv;
+ if (uc_drv->child_pre_probe)
+ return uc_drv->child_pre_probe(dev);
+
+ return 0;
+}
+
int uclass_post_probe_device(struct udevice *dev)
{
struct uclass_driver *uc_drv = dev->uclass->uc_drv;
generated by cgit v1.1 at 2024-10-30 07:25:16 +0000