DECLARE_GLOBAL_DATA_PTR;
-int device_bind(struct udevice *parent, struct driver *drv, const char *name,
- void *platdata, int of_offset, struct udevice **devp)
+int device_bind(struct udevice *parent, const struct driver *drv,
+ const char *name, void *platdata, int of_offset,
+ struct udevice **devp)
{
struct udevice *dev;
struct uclass *uc;
- int ret = 0;
+ int size, ret = 0;
*devp = NULL;
if (!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;
-#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);
- }
-#else
dev->req_seq = -1;
-#endif
+ if (IS_ENABLED(CONFIG_OF_CONTROL) && IS_ENABLED(CONFIG_DM_SEQ_ALIAS)) {
+ /*
+ * 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);
+ }
+ }
+ }
+
if (!dev->platdata && drv->platdata_auto_alloc_size) {
dev->flags |= DM_FLAG_ALLOC_PDATA;
dev->platdata = calloc(1, drv->platdata_auto_alloc_size);
goto fail_alloc1;
}
}
- if (parent) {
- int size = parent->driver->per_child_platdata_auto_alloc_size;
+ size = uc->uc_drv->per_device_platdata_auto_alloc_size;
+ if (size) {
+ dev->flags |= DM_FLAG_ALLOC_UCLASS_PDATA;
+ dev->uclass_platdata = calloc(1, size);
+ if (!dev->uclass_platdata) {
+ ret = -ENOMEM;
+ goto fail_alloc2;
+ }
+ }
+
+ if (parent) {
+ size = parent->driver->per_child_platdata_auto_alloc_size;
if (!size) {
size = parent->uclass->uc_drv->
per_child_platdata_auto_alloc_size;
dev->parent_platdata = calloc(1, size);
if (!dev->parent_platdata) {
ret = -ENOMEM;
- goto fail_alloc2;
+ goto fail_alloc3;
}
}
}
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);
+ if (IS_ENABLED(CONFIG_DM_DEVICE_REMOVE)) {
+ 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);
+ if (IS_ENABLED(CONFIG_DM_DEVICE_REMOVE)) {
+ 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;
+ if (IS_ENABLED(CONFIG_DM_DEVICE_REMOVE)) {
+ list_del(&dev->sibling_node);
+ if (dev->flags & DM_FLAG_ALLOC_PARENT_PDATA) {
+ free(dev->parent_platdata);
+ dev->parent_platdata = NULL;
+ }
+ }
+fail_alloc3:
+ if (dev->flags & DM_FLAG_ALLOC_UCLASS_PDATA) {
+ free(dev->uclass_platdata);
+ dev->uclass_platdata = NULL;
}
fail_alloc2:
if (dev->flags & DM_FLAG_ALLOC_PDATA) {
-1, devp);
}
+static void *alloc_priv(int size, uint flags)
+{
+ void *priv;
+
+ if (flags & DM_FLAG_ALLOC_PRIV_DMA) {
+ priv = memalign(ARCH_DMA_MINALIGN, size);
+ if (priv)
+ memset(priv, '\0', size);
+ } else {
+ priv = calloc(1, size);
+ }
+
+ return priv;
+}
+
int device_probe_child(struct udevice *dev, void *parent_priv)
{
- struct driver *drv;
+ const struct driver *drv;
int size = 0;
int ret;
int seq;
/* Allocate private data if requested */
if (drv->priv_auto_alloc_size) {
- dev->priv = calloc(1, drv->priv_auto_alloc_size);
+ dev->priv = alloc_priv(drv->priv_auto_alloc_size, drv->flags);
if (!dev->priv) {
ret = -ENOMEM;
goto fail;
/* 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);
+ dev->parent_priv = alloc_priv(size, drv->flags);
if (!dev->parent_priv) {
ret = -ENOMEM;
goto fail;
}
dev->seq = seq;
+ dev->flags |= DM_FLAG_ACTIVATED;
+
+ ret = uclass_pre_probe_device(dev);
+ if (ret)
+ goto fail;
+
if (dev->parent && dev->parent->driver->child_pre_probe) {
ret = dev->parent->driver->child_pre_probe(dev);
if (ret)
goto fail;
}
+ dev->flags |= DM_FLAG_ACTIVATED;
if (drv->probe) {
ret = drv->probe(dev);
- if (ret)
+ if (ret) {
+ dev->flags &= ~DM_FLAG_ACTIVATED;
goto fail;
+ }
}
- dev->flags |= DM_FLAG_ACTIVATED;
-
ret = uclass_post_probe_device(dev);
- if (ret) {
- dev->flags &= ~DM_FLAG_ACTIVATED;
+ if (ret)
goto fail_uclass;
- }
return 0;
fail_uclass:
__func__, dev->name);
}
fail:
+ dev->flags &= ~DM_FLAG_ACTIVATED;
+
dev->seq = -1;
device_free(dev);
return dev->parent_platdata;
}
+void *dev_get_uclass_platdata(struct udevice *dev)
+{
+ if (!dev) {
+ dm_warn("%s: null device", __func__);
+ return NULL;
+ }
+
+ return dev->uclass_platdata;
+}
+
void *dev_get_priv(struct udevice *dev)
{
if (!dev) {
return dev->priv;
}
+void *dev_get_uclass_priv(struct udevice *dev)
+{
+ if (!dev) {
+ dm_warn("%s: null device\n", __func__);
+ return NULL;
+ }
+
+ return dev->uclass_priv;
+}
+
void *dev_get_parentdata(struct udevice *dev)
{
if (!dev) {
return child->parent;
}
-ulong dev_get_of_data(struct udevice *dev)
+ulong dev_get_driver_data(struct udevice *dev)
+{
+ return dev->driver_data;
+}
+
+const void *dev_get_driver_ops(struct udevice *dev)
+{
+ if (!dev || !dev->driver->ops)
+ return NULL;
+
+ return dev->driver->ops;
+}
+
+enum uclass_id device_get_uclass_id(struct udevice *dev)
+{
+ return dev->uclass->uc_drv->id;
+}
+
+const char *dev_get_uclass_name(struct udevice *dev)
{
- return dev->of_id->data;
+ if (!dev)
+ return NULL;
+
+ return dev->uclass->uc_drv->name;
+}
+
+#ifdef CONFIG_OF_CONTROL
+fdt_addr_t dev_get_addr(struct udevice *dev)
+{
+ return fdtdec_get_addr(gd->fdt_blob, dev->of_offset, "reg");
+}
+#else
+fdt_addr_t dev_get_addr(struct udevice *dev)
+{
+ return FDT_ADDR_T_NONE;
+}
+#endif
+
+bool device_has_children(struct udevice *dev)
+{
+ return !list_empty(&dev->child_head);
+}
+
+bool device_has_active_children(struct udevice *dev)
+{
+ struct udevice *child;
+
+ for (device_find_first_child(dev, &child);
+ child;
+ device_find_next_child(&child)) {
+ if (device_active(child))
+ return true;
+ }
+
+ return false;
+}
+
+bool device_is_last_sibling(struct udevice *dev)
+{
+ struct udevice *parent = dev->parent;
+
+ if (!parent)
+ return false;
+ return list_is_last(&dev->sibling_node, &parent->child_head);
}
projects / oweals / u-boot.git / blobdiff