*/
#include <common.h>
+#include <asm/io.h>
#include <fdtdec.h>
+#include <fdt_support.h>
#include <malloc.h>
#include <dm/device.h>
#include <dm/device-internal.h>
#include <dm/lists.h>
+#include <dm/pinctrl.h>
#include <dm/platdata.h>
#include <dm/uclass.h>
#include <dm/uclass-internal.h>
DECLARE_GLOBAL_DATA_PTR;
-int device_bind(struct udevice *parent, struct driver *drv, const char *name,
- void *platdata, int of_offset, struct udevice **devp)
+static int device_bind_common(struct udevice *parent, const struct driver *drv,
+ const char *name, void *platdata,
+ ulong driver_data, int of_offset,
+ uint of_platdata_size, struct udevice **devp)
{
struct udevice *dev;
struct uclass *uc;
- int ret = 0;
+ int size, ret = 0;
- *devp = NULL;
+ if (devp)
+ *devp = NULL;
if (!name)
return -EINVAL;
ret = uclass_get(drv->id, &uc);
- if (ret)
+ if (ret) {
+ debug("Missing uclass for driver %s\n", drv->name);
return ret;
+ }
dev = calloc(1, sizeof(struct udevice));
if (!dev)
INIT_LIST_HEAD(&dev->sibling_node);
INIT_LIST_HEAD(&dev->child_head);
INIT_LIST_HEAD(&dev->uclass_node);
+#ifdef CONFIG_DEVRES
+ INIT_LIST_HEAD(&dev->devres_head);
+#endif
dev->platdata = platdata;
+ dev->driver_data = driver_data;
dev->name = name;
dev->of_offset = of_offset;
dev->parent = parent;
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 (!dev->platdata && drv->platdata_auto_alloc_size)
- dev->flags |= DM_FLAG_ALLOC_PDATA;
+ if (CONFIG_IS_ENABLED(OF_CONTROL) && CONFIG_IS_ENABLED(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 (drv->platdata_auto_alloc_size) {
+ bool alloc = !platdata;
+
+ if (CONFIG_IS_ENABLED(OF_PLATDATA)) {
+ if (of_platdata_size) {
+ dev->flags |= DM_FLAG_OF_PLATDATA;
+ if (of_platdata_size <
+ drv->platdata_auto_alloc_size)
+ alloc = true;
+ }
+ }
+ if (alloc) {
+ dev->flags |= DM_FLAG_ALLOC_PDATA;
+ dev->platdata = calloc(1,
+ drv->platdata_auto_alloc_size);
+ if (!dev->platdata) {
+ ret = -ENOMEM;
+ goto fail_alloc1;
+ }
+ if (CONFIG_IS_ENABLED(OF_PLATDATA) && platdata) {
+ memcpy(dev->platdata, platdata,
+ of_platdata_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;
+ }
+ if (size) {
+ dev->flags |= DM_FLAG_ALLOC_PARENT_PDATA;
+ dev->parent_platdata = calloc(1, size);
+ if (!dev->parent_platdata) {
+ ret = -ENOMEM;
+ goto fail_alloc3;
+ }
+ }
+ }
/* put dev into parent's successor list */
if (parent)
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 (uc->uc_drv->post_bind) {
+ ret = uc->uc_drv->post_bind(dev);
+ if (ret)
+ goto fail_uclass_post_bind;
+ }
+
if (parent)
dm_dbg("Bound device %s to %s\n", dev->name, parent->name);
- *devp = dev;
+ if (devp)
+ *devp = dev;
+
+ dev->flags |= DM_FLAG_BOUND;
return 0;
+fail_uclass_post_bind:
+ /* There is no child unbind() method, so no clean-up required */
+fail_child_post_bind:
+ if (CONFIG_IS_ENABLED(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:
- list_del(&dev->sibling_node);
+ if (CONFIG_IS_ENABLED(DM_DEVICE_REMOVE)) {
+ if (uclass_unbind_device(dev)) {
+ dm_warn("Failed to unbind dev '%s' on error path\n",
+ dev->name);
+ }
+ }
+fail_uclass_bind:
+ if (CONFIG_IS_ENABLED(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) {
+ free(dev->platdata);
+ dev->platdata = NULL;
+ }
+fail_alloc1:
+ devres_release_all(dev);
+
free(dev);
+
return ret;
}
+int device_bind_with_driver_data(struct udevice *parent,
+ const struct driver *drv, const char *name,
+ ulong driver_data, int of_offset,
+ struct udevice **devp)
+{
+ return device_bind_common(parent, drv, name, NULL, driver_data,
+ of_offset, 0, devp);
+}
+
+int device_bind(struct udevice *parent, const struct driver *drv,
+ const char *name, void *platdata, int of_offset,
+ struct udevice **devp)
+{
+ return device_bind_common(parent, drv, name, platdata, 0, of_offset, 0,
+ devp);
+}
+
int device_bind_by_name(struct udevice *parent, bool pre_reloc_only,
const struct driver_info *info, struct udevice **devp)
{
struct driver *drv;
+ uint platdata_size = 0;
drv = lists_driver_lookup_name(info->name);
if (!drv)
if (pre_reloc_only && !(drv->flags & DM_FLAG_PRE_RELOC))
return -EPERM;
- return device_bind(parent, drv, info->name, (void *)info->platdata,
- -1, devp);
+#if CONFIG_IS_ENABLED(OF_PLATDATA)
+ platdata_size = info->platdata_size;
+#endif
+ return device_bind_common(parent, drv, info->name,
+ (void *)info->platdata, 0, -1, platdata_size, devp);
}
-int device_probe_child(struct udevice *dev, void *parent_priv)
+static void *alloc_priv(int size, uint flags)
{
- struct driver *drv;
+ 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(struct udevice *dev)
+{
+ const struct driver *drv;
int size = 0;
int ret;
int seq;
drv = dev->driver;
assert(drv);
- /* Allocate private data and platdata if requested */
- if (drv->priv_auto_alloc_size) {
- dev->priv = calloc(1, drv->priv_auto_alloc_size);
+ /* Allocate private data if requested and not reentered */
+ if (drv->priv_auto_alloc_size && !dev->priv) {
+ dev->priv = alloc_priv(drv->priv_auto_alloc_size, drv->flags);
if (!dev->priv) {
ret = -ENOMEM;
goto fail;
}
}
- /* 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;
- }
- }
+ /* Allocate private data if requested and not reentered */
size = dev->uclass->uc_drv->per_device_auto_alloc_size;
- if (size) {
+ if (size && !dev->uclass_priv) {
dev->uclass_priv = calloc(1, size);
if (!dev->uclass_priv) {
ret = -ENOMEM;
/* Ensure all parents are probed */
if (dev->parent) {
size = dev->parent->driver->per_child_auto_alloc_size;
- if (size) {
- dev->parent_priv = calloc(1, size);
+ if (!size) {
+ size = dev->parent->uclass->uc_drv->
+ per_child_auto_alloc_size;
+ }
+ if (size && !dev->parent_priv) {
+ dev->parent_priv = alloc_priv(size, drv->flags);
if (!dev->parent_priv) {
ret = -ENOMEM;
goto fail;
}
- if (parent_priv)
- memcpy(dev->parent_priv, parent_priv, size);
}
ret = device_probe(dev->parent);
if (ret)
goto fail;
+
+ /*
+ * The device might have already been probed during
+ * the call to device_probe() on its parent device
+ * (e.g. PCI bridge devices). Test the flags again
+ * so that we don't mess up the device.
+ */
+ if (dev->flags & DM_FLAG_ACTIVATED)
+ return 0;
}
seq = uclass_resolve_seq(dev);
}
dev->seq = seq;
+ dev->flags |= DM_FLAG_ACTIVATED;
+
+ /*
+ * Process pinctrl for everything except the root device, and
+ * continue regardless of the result of pinctrl. Don't process pinctrl
+ * settings for pinctrl devices since the device may not yet be
+ * probed.
+ */
+ if (dev->parent && device_get_uclass_id(dev) != UCLASS_PINCTRL)
+ pinctrl_select_state(dev, "default");
+
+ 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)
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;
- }
+
+ if (dev->parent && device_get_uclass_id(dev) == UCLASS_PINCTRL)
+ pinctrl_select_state(dev, "default");
return 0;
fail_uclass:
__func__, dev->name);
}
fail:
+ dev->flags &= ~DM_FLAG_ACTIVATED;
+
dev->seq = -1;
device_free(dev);
return ret;
}
-int device_probe(struct udevice *dev)
+void *dev_get_platdata(struct udevice *dev)
{
- return device_probe_child(dev, NULL);
+ if (!dev) {
+ dm_warn("%s: null device\n", __func__);
+ return NULL;
+ }
+
+ return dev->platdata;
}
-void *dev_get_platdata(struct udevice *dev)
+void *dev_get_parent_platdata(struct udevice *dev)
{
if (!dev) {
dm_warn("%s: null device\n", __func__);
return NULL;
}
- return dev->platdata;
+ return dev->parent_platdata;
+}
+
+void *dev_get_uclass_platdata(struct udevice *dev)
+{
+ if (!dev) {
+ dm_warn("%s: null device\n", __func__);
+ return NULL;
+ }
+
+ return dev->uclass_platdata;
}
void *dev_get_priv(struct udevice *dev)
return dev->priv;
}
-void *dev_get_parentdata(struct udevice *dev)
+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_parent_priv(struct udevice *dev)
{
if (!dev) {
dm_warn("%s: null device\n", __func__);
return -ENODEV;
}
-int device_get_child_by_of_offset(struct udevice *parent, int seq,
+int device_get_child_by_of_offset(struct udevice *parent, int node,
struct udevice **devp)
{
struct udevice *dev;
int ret;
*devp = NULL;
- ret = device_find_child_by_of_offset(parent, seq, &dev);
+ ret = device_find_child_by_of_offset(parent, node, &dev);
return device_get_device_tail(dev, ret, devp);
}
+static struct udevice *_device_find_global_by_of_offset(struct udevice *parent,
+ int of_offset)
+{
+ struct udevice *dev, *found;
+
+ if (parent->of_offset == of_offset)
+ return parent;
+
+ list_for_each_entry(dev, &parent->child_head, sibling_node) {
+ found = _device_find_global_by_of_offset(dev, of_offset);
+ if (found)
+ return found;
+ }
+
+ return NULL;
+}
+
+int device_get_global_by_of_offset(int of_offset, struct udevice **devp)
+{
+ struct udevice *dev;
+
+ dev = _device_find_global_by_of_offset(gd->dm_root, of_offset);
+ return device_get_device_tail(dev, dev ? 0 : -ENOENT, devp);
+}
+
int device_find_first_child(struct udevice *parent, struct udevice **devp)
{
if (list_empty(&parent->child_head)) {
return child->parent;
}
-ulong dev_get_of_data(struct udevice *dev)
+ulong dev_get_driver_data(struct udevice *dev)
{
- return dev->of_id->data;
+ 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)
+{
+ if (!dev)
+ return NULL;
+
+ return dev->uclass->uc_drv->name;
+}
+
+fdt_addr_t dev_get_addr_index(struct udevice *dev, int index)
+{
+#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
+ fdt_addr_t addr;
+
+ if (CONFIG_IS_ENABLED(OF_TRANSLATE)) {
+ const fdt32_t *reg;
+ int len = 0;
+ int na, ns;
+
+ na = fdt_address_cells(gd->fdt_blob, dev->parent->of_offset);
+ if (na < 1) {
+ debug("bad #address-cells\n");
+ return FDT_ADDR_T_NONE;
+ }
+
+ ns = fdt_size_cells(gd->fdt_blob, dev->parent->of_offset);
+ if (ns < 0) {
+ debug("bad #size-cells\n");
+ return FDT_ADDR_T_NONE;
+ }
+
+ reg = fdt_getprop(gd->fdt_blob, dev->of_offset, "reg", &len);
+ if (!reg || (len <= (index * sizeof(fdt32_t) * (na + ns)))) {
+ debug("Req index out of range\n");
+ return FDT_ADDR_T_NONE;
+ }
+
+ reg += index * (na + ns);
+
+ /*
+ * Use the full-fledged translate function for complex
+ * bus setups.
+ */
+ addr = fdt_translate_address((void *)gd->fdt_blob,
+ dev->of_offset, reg);
+ } else {
+ /*
+ * Use the "simple" translate function for less complex
+ * bus setups.
+ */
+ addr = fdtdec_get_addr_size_auto_parent(gd->fdt_blob,
+ dev->parent->of_offset,
+ dev->of_offset, "reg",
+ index, NULL, false);
+ if (CONFIG_IS_ENABLED(SIMPLE_BUS) && addr != FDT_ADDR_T_NONE) {
+ if (device_get_uclass_id(dev->parent) ==
+ UCLASS_SIMPLE_BUS)
+ addr = simple_bus_translate(dev->parent, addr);
+ }
+ }
+
+ /*
+ * Some platforms need a special address translation. Those
+ * platforms (e.g. mvebu in SPL) can configure a translation
+ * offset in the DM by calling dm_set_translation_offset() that
+ * will get added to all addresses returned by dev_get_addr().
+ */
+ addr += dm_get_translation_offset();
+
+ return addr;
+#else
+ return FDT_ADDR_T_NONE;
+#endif
+}
+
+fdt_addr_t dev_get_addr_name(struct udevice *dev, const char *name)
+{
+#if CONFIG_IS_ENABLED(OF_CONTROL)
+ int index;
+
+ index = fdt_stringlist_search(gd->fdt_blob, dev->of_offset, "reg-names",
+ name);
+ if (index < 0)
+ return index;
+
+ return dev_get_addr_index(dev, index);
+#else
+ return FDT_ADDR_T_NONE;
+#endif
+}
+
+fdt_addr_t dev_get_addr(struct udevice *dev)
+{
+ return dev_get_addr_index(dev, 0);
+}
+
+void *dev_get_addr_ptr(struct udevice *dev)
+{
+ return (void *)(uintptr_t)dev_get_addr_index(dev, 0);
+}
+
+void *dev_map_physmem(struct udevice *dev, unsigned long size)
+{
+ fdt_addr_t addr = dev_get_addr(dev);
+
+ if (addr == FDT_ADDR_T_NONE)
+ return NULL;
+
+ return map_physmem(addr, size, MAP_NOCACHE);
+}
+
+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);
+}
+
+void device_set_name_alloced(struct udevice *dev)
+{
+ dev->flags |= DM_FLAG_NAME_ALLOCED;
+}
+
+int device_set_name(struct udevice *dev, const char *name)
+{
+ name = strdup(name);
+ if (!name)
+ return -ENOMEM;
+ dev->name = name;
+ device_set_name_alloced(dev);
+
+ return 0;
+}
+
+bool of_device_is_compatible(struct udevice *dev, const char *compat)
+{
+ const void *fdt = gd->fdt_blob;
+
+ return !fdt_node_check_compatible(fdt, dev->of_offset, compat);
+}
+
+bool of_machine_is_compatible(const char *compat)
+{
+ const void *fdt = gd->fdt_blob;
+
+ return !fdt_node_check_compatible(fdt, 0, compat);
}
projects / u-boot / blobdiff