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-rw-r--r--drivers/of/base.c733
1 files changed, 0 insertions, 733 deletions
diff --git a/drivers/of/base.c b/drivers/of/base.c
index 28d5f53bc631..9f70464772a3 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -1113,458 +1113,6 @@ struct device_node *of_find_node_by_phandle(phandle handle)
}
EXPORT_SYMBOL(of_find_node_by_phandle);
-/**
- * of_property_count_elems_of_size - Count the number of elements in a property
- *
- * @np: device node from which the property value is to be read.
- * @propname: name of the property to be searched.
- * @elem_size: size of the individual element
- *
- * Search for a property in a device node and count the number of elements of
- * size elem_size in it. Returns number of elements on sucess, -EINVAL if the
- * property does not exist or its length does not match a multiple of elem_size
- * and -ENODATA if the property does not have a value.
- */
-int of_property_count_elems_of_size(const struct device_node *np,
- const char *propname, int elem_size)
-{
- struct property *prop = of_find_property(np, propname, NULL);
-
- if (!prop)
- return -EINVAL;
- if (!prop->value)
- return -ENODATA;
-
- if (prop->length % elem_size != 0) {
- pr_err("size of %s in node %s is not a multiple of %d\n",
- propname, np->full_name, elem_size);
- return -EINVAL;
- }
-
- return prop->length / elem_size;
-}
-EXPORT_SYMBOL_GPL(of_property_count_elems_of_size);
-
-/**
- * of_find_property_value_of_size
- *
- * @np: device node from which the property value is to be read.
- * @propname: name of the property to be searched.
- * @min: minimum allowed length of property value
- * @max: maximum allowed length of property value (0 means unlimited)
- * @len: if !=NULL, actual length is written to here
- *
- * Search for a property in a device node and valid the requested size.
- * Returns the property value on success, -EINVAL if the property does not
- * exist, -ENODATA if property does not have a value, and -EOVERFLOW if the
- * property data is too small or too large.
- *
- */
-static void *of_find_property_value_of_size(const struct device_node *np,
- const char *propname, u32 min, u32 max, size_t *len)
-{
- struct property *prop = of_find_property(np, propname, NULL);
-
- if (!prop)
- return ERR_PTR(-EINVAL);
- if (!prop->value)
- return ERR_PTR(-ENODATA);
- if (prop->length < min)
- return ERR_PTR(-EOVERFLOW);
- if (max && prop->length > max)
- return ERR_PTR(-EOVERFLOW);
-
- if (len)
- *len = prop->length;
-
- return prop->value;
-}
-
-/**
- * of_property_read_u32_index - Find and read a u32 from a multi-value property.
- *
- * @np: device node from which the property value is to be read.
- * @propname: name of the property to be searched.
- * @index: index of the u32 in the list of values
- * @out_value: pointer to return value, modified only if no error.
- *
- * Search for a property in a device node and read nth 32-bit value from
- * it. Returns 0 on success, -EINVAL if the property does not exist,
- * -ENODATA if property does not have a value, and -EOVERFLOW if the
- * property data isn't large enough.
- *
- * The out_value is modified only if a valid u32 value can be decoded.
- */
-int of_property_read_u32_index(const struct device_node *np,
- const char *propname,
- u32 index, u32 *out_value)
-{
- const u32 *val = of_find_property_value_of_size(np, propname,
- ((index + 1) * sizeof(*out_value)),
- 0,
- NULL);
-
- if (IS_ERR(val))
- return PTR_ERR(val);
-
- *out_value = be32_to_cpup(((__be32 *)val) + index);
- return 0;
-}
-EXPORT_SYMBOL_GPL(of_property_read_u32_index);
-
-/**
- * of_property_read_u64_index - Find and read a u64 from a multi-value property.
- *
- * @np: device node from which the property value is to be read.
- * @propname: name of the property to be searched.
- * @index: index of the u64 in the list of values
- * @out_value: pointer to return value, modified only if no error.
- *
- * Search for a property in a device node and read nth 64-bit value from
- * it. Returns 0 on success, -EINVAL if the property does not exist,
- * -ENODATA if property does not have a value, and -EOVERFLOW if the
- * property data isn't large enough.
- *
- * The out_value is modified only if a valid u64 value can be decoded.
- */
-int of_property_read_u64_index(const struct device_node *np,
- const char *propname,
- u32 index, u64 *out_value)
-{
- const u64 *val = of_find_property_value_of_size(np, propname,
- ((index + 1) * sizeof(*out_value)),
- 0, NULL);
-
- if (IS_ERR(val))
- return PTR_ERR(val);
-
- *out_value = be64_to_cpup(((__be64 *)val) + index);
- return 0;
-}
-EXPORT_SYMBOL_GPL(of_property_read_u64_index);
-
-/**
- * of_property_read_variable_u8_array - Find and read an array of u8 from a
- * property, with bounds on the minimum and maximum array size.
- *
- * @np: device node from which the property value is to be read.
- * @propname: name of the property to be searched.
- * @out_values: pointer to return value, modified only if return value is 0.
- * @sz_min: minimum number of array elements to read
- * @sz_max: maximum number of array elements to read, if zero there is no
- * upper limit on the number of elements in the dts entry but only
- * sz_min will be read.
- *
- * Search for a property in a device node and read 8-bit value(s) from
- * it. Returns number of elements read on success, -EINVAL if the property
- * does not exist, -ENODATA if property does not have a value, and -EOVERFLOW
- * if the property data is smaller than sz_min or longer than sz_max.
- *
- * dts entry of array should be like:
- * property = /bits/ 8 <0x50 0x60 0x70>;
- *
- * The out_values is modified only if a valid u8 value can be decoded.
- */
-int of_property_read_variable_u8_array(const struct device_node *np,
- const char *propname, u8 *out_values,
- size_t sz_min, size_t sz_max)
-{
- size_t sz, count;
- const u8 *val = of_find_property_value_of_size(np, propname,
- (sz_min * sizeof(*out_values)),
- (sz_max * sizeof(*out_values)),
- &sz);
-
- if (IS_ERR(val))
- return PTR_ERR(val);
-
- if (!sz_max)
- sz = sz_min;
- else
- sz /= sizeof(*out_values);
-
- count = sz;
- while (count--)
- *out_values++ = *val++;
-
- return sz;
-}
-EXPORT_SYMBOL_GPL(of_property_read_variable_u8_array);
-
-/**
- * of_property_read_variable_u16_array - Find and read an array of u16 from a
- * property, with bounds on the minimum and maximum array size.
- *
- * @np: device node from which the property value is to be read.
- * @propname: name of the property to be searched.
- * @out_values: pointer to return value, modified only if return value is 0.
- * @sz_min: minimum number of array elements to read
- * @sz_max: maximum number of array elements to read, if zero there is no
- * upper limit on the number of elements in the dts entry but only
- * sz_min will be read.
- *
- * Search for a property in a device node and read 16-bit value(s) from
- * it. Returns number of elements read on success, -EINVAL if the property
- * does not exist, -ENODATA if property does not have a value, and -EOVERFLOW
- * if the property data is smaller than sz_min or longer than sz_max.
- *
- * dts entry of array should be like:
- * property = /bits/ 16 <0x5000 0x6000 0x7000>;
- *
- * The out_values is modified only if a valid u16 value can be decoded.
- */
-int of_property_read_variable_u16_array(const struct device_node *np,
- const char *propname, u16 *out_values,
- size_t sz_min, size_t sz_max)
-{
- size_t sz, count;
- const __be16 *val = of_find_property_value_of_size(np, propname,
- (sz_min * sizeof(*out_values)),
- (sz_max * sizeof(*out_values)),
- &sz);
-
- if (IS_ERR(val))
- return PTR_ERR(val);
-
- if (!sz_max)
- sz = sz_min;
- else
- sz /= sizeof(*out_values);
-
- count = sz;
- while (count--)
- *out_values++ = be16_to_cpup(val++);
-
- return sz;
-}
-EXPORT_SYMBOL_GPL(of_property_read_variable_u16_array);
-
-/**
- * of_property_read_variable_u32_array - Find and read an array of 32 bit
- * integers from a property, with bounds on the minimum and maximum array size.
- *
- * @np: device node from which the property value is to be read.
- * @propname: name of the property to be searched.
- * @out_values: pointer to return value, modified only if return value is 0.
- * @sz_min: minimum number of array elements to read
- * @sz_max: maximum number of array elements to read, if zero there is no
- * upper limit on the number of elements in the dts entry but only
- * sz_min will be read.
- *
- * Search for a property in a device node and read 32-bit value(s) from
- * it. Returns number of elements read on success, -EINVAL if the property
- * does not exist, -ENODATA if property does not have a value, and -EOVERFLOW
- * if the property data is smaller than sz_min or longer than sz_max.
- *
- * The out_values is modified only if a valid u32 value can be decoded.
- */
-int of_property_read_variable_u32_array(const struct device_node *np,
- const char *propname, u32 *out_values,
- size_t sz_min, size_t sz_max)
-{
- size_t sz, count;
- const __be32 *val = of_find_property_value_of_size(np, propname,
- (sz_min * sizeof(*out_values)),
- (sz_max * sizeof(*out_values)),
- &sz);
-
- if (IS_ERR(val))
- return PTR_ERR(val);
-
- if (!sz_max)
- sz = sz_min;
- else
- sz /= sizeof(*out_values);
-
- count = sz;
- while (count--)
- *out_values++ = be32_to_cpup(val++);
-
- return sz;
-}
-EXPORT_SYMBOL_GPL(of_property_read_variable_u32_array);
-
-/**
- * of_property_read_u64 - Find and read a 64 bit integer from a property
- * @np: device node from which the property value is to be read.
- * @propname: name of the property to be searched.
- * @out_value: pointer to return value, modified only if return value is 0.
- *
- * Search for a property in a device node and read a 64-bit value from
- * it. Returns 0 on success, -EINVAL if the property does not exist,
- * -ENODATA if property does not have a value, and -EOVERFLOW if the
- * property data isn't large enough.
- *
- * The out_value is modified only if a valid u64 value can be decoded.
- */
-int of_property_read_u64(const struct device_node *np, const char *propname,
- u64 *out_value)
-{
- const __be32 *val = of_find_property_value_of_size(np, propname,
- sizeof(*out_value),
- 0,
- NULL);
-
- if (IS_ERR(val))
- return PTR_ERR(val);
-
- *out_value = of_read_number(val, 2);
- return 0;
-}
-EXPORT_SYMBOL_GPL(of_property_read_u64);
-
-/**
- * of_property_read_variable_u64_array - Find and read an array of 64 bit
- * integers from a property, with bounds on the minimum and maximum array size.
- *
- * @np: device node from which the property value is to be read.
- * @propname: name of the property to be searched.
- * @out_values: pointer to return value, modified only if return value is 0.
- * @sz_min: minimum number of array elements to read
- * @sz_max: maximum number of array elements to read, if zero there is no
- * upper limit on the number of elements in the dts entry but only
- * sz_min will be read.
- *
- * Search for a property in a device node and read 64-bit value(s) from
- * it. Returns number of elements read on success, -EINVAL if the property
- * does not exist, -ENODATA if property does not have a value, and -EOVERFLOW
- * if the property data is smaller than sz_min or longer than sz_max.
- *
- * The out_values is modified only if a valid u64 value can be decoded.
- */
-int of_property_read_variable_u64_array(const struct device_node *np,
- const char *propname, u64 *out_values,
- size_t sz_min, size_t sz_max)
-{
- size_t sz, count;
- const __be32 *val = of_find_property_value_of_size(np, propname,
- (sz_min * sizeof(*out_values)),
- (sz_max * sizeof(*out_values)),
- &sz);
-
- if (IS_ERR(val))
- return PTR_ERR(val);
-
- if (!sz_max)
- sz = sz_min;
- else
- sz /= sizeof(*out_values);
-
- count = sz;
- while (count--) {
- *out_values++ = of_read_number(val, 2);
- val += 2;
- }
-
- return sz;
-}
-EXPORT_SYMBOL_GPL(of_property_read_variable_u64_array);
-
-/**
- * of_property_read_string - Find and read a string from a property
- * @np: device node from which the property value is to be read.
- * @propname: name of the property to be searched.
- * @out_string: pointer to null terminated return string, modified only if
- * return value is 0.
- *
- * Search for a property in a device tree node and retrieve a null
- * terminated string value (pointer to data, not a copy). Returns 0 on
- * success, -EINVAL if the property does not exist, -ENODATA if property
- * does not have a value, and -EILSEQ if the string is not null-terminated
- * within the length of the property data.
- *
- * The out_string pointer is modified only if a valid string can be decoded.
- */
-int of_property_read_string(const struct device_node *np, const char *propname,
- const char **out_string)
-{
- const struct property *prop = of_find_property(np, propname, NULL);
- if (!prop)
- return -EINVAL;
- if (!prop->value)
- return -ENODATA;
- if (strnlen(prop->value, prop->length) >= prop->length)
- return -EILSEQ;
- *out_string = prop->value;
- return 0;
-}
-EXPORT_SYMBOL_GPL(of_property_read_string);
-
-/**
- * of_property_match_string() - Find string in a list and return index
- * @np: pointer to node containing string list property
- * @propname: string list property name
- * @string: pointer to string to search for in string list
- *
- * This function searches a string list property and returns the index
- * of a specific string value.
- */
-int of_property_match_string(const struct device_node *np, const char *propname,
- const char *string)
-{
- const struct property *prop = of_find_property(np, propname, NULL);
- size_t l;
- int i;
- const char *p, *end;
-
- if (!prop)
- return -EINVAL;
- if (!prop->value)
- return -ENODATA;
-
- p = prop->value;
- end = p + prop->length;
-
- for (i = 0; p < end; i++, p += l) {
- l = strnlen(p, end - p) + 1;
- if (p + l > end)
- return -EILSEQ;
- pr_debug("comparing %s with %s\n", string, p);
- if (strcmp(string, p) == 0)
- return i; /* Found it; return index */
- }
- return -ENODATA;
-}
-EXPORT_SYMBOL_GPL(of_property_match_string);
-
-/**
- * of_property_read_string_helper() - Utility helper for parsing string properties
- * @np: device node from which the property value is to be read.
- * @propname: name of the property to be searched.
- * @out_strs: output array of string pointers.
- * @sz: number of array elements to read.
- * @skip: Number of strings to skip over at beginning of list.
- *
- * Don't call this function directly. It is a utility helper for the
- * of_property_read_string*() family of functions.
- */
-int of_property_read_string_helper(const struct device_node *np,
- const char *propname, const char **out_strs,
- size_t sz, int skip)
-{
- const struct property *prop = of_find_property(np, propname, NULL);
- int l = 0, i = 0;
- const char *p, *end;
-
- if (!prop)
- return -EINVAL;
- if (!prop->value)
- return -ENODATA;
- p = prop->value;
- end = p + prop->length;
-
- for (i = 0; p < end && (!out_strs || i < skip + sz); i++, p += l) {
- l = strnlen(p, end - p) + 1;
- if (p + l > end)
- return -EILSEQ;
- if (out_strs && i >= skip)
- *out_strs++ = p;
- }
- i -= skip;
- return i <= 0 ? -ENODATA : i;
-}
-EXPORT_SYMBOL_GPL(of_property_read_string_helper);
-
void of_print_phandle_args(const char *msg, const struct of_phandle_args *args)
{
int i;
@@ -2211,47 +1759,6 @@ int of_alias_get_highest_id(const char *stem)
}
EXPORT_SYMBOL_GPL(of_alias_get_highest_id);
-const __be32 *of_prop_next_u32(struct property *prop, const __be32 *cur,
- u32 *pu)
-{
- const void *curv = cur;
-
- if (!prop)
- return NULL;
-
- if (!cur) {
- curv = prop->value;
- goto out_val;
- }
-
- curv += sizeof(*cur);
- if (curv >= prop->value + prop->length)
- return NULL;
-
-out_val:
- *pu = be32_to_cpup(curv);
- return curv;
-}
-EXPORT_SYMBOL_GPL(of_prop_next_u32);
-
-const char *of_prop_next_string(struct property *prop, const char *cur)
-{
- const void *curv = cur;
-
- if (!prop)
- return NULL;
-
- if (!cur)
- return prop->value;
-
- curv += strlen(cur) + 1;
- if (curv >= prop->value + prop->length)
- return NULL;
-
- return curv;
-}
-EXPORT_SYMBOL_GPL(of_prop_next_string);
-
/**
* of_console_check() - Test and setup console for DT setup
* @dn - Pointer to device node
@@ -2325,243 +1832,3 @@ int of_find_last_cache_level(unsigned int cpu)
return cache_level;
}
-
-/**
- * of_graph_parse_endpoint() - parse common endpoint node properties
- * @node: pointer to endpoint device_node
- * @endpoint: pointer to the OF endpoint data structure
- *
- * The caller should hold a reference to @node.
- */
-int of_graph_parse_endpoint(const struct device_node *node,
- struct of_endpoint *endpoint)
-{
- struct device_node *port_node = of_get_parent(node);
-
- WARN_ONCE(!port_node, "%s(): endpoint %s has no parent node\n",
- __func__, node->full_name);
-
- memset(endpoint, 0, sizeof(*endpoint));
-
- endpoint->local_node = node;
- /*
- * It doesn't matter whether the two calls below succeed.
- * If they don't then the default value 0 is used.
- */
- of_property_read_u32(port_node, "reg", &endpoint->port);
- of_property_read_u32(node, "reg", &endpoint->id);
-
- of_node_put(port_node);
-
- return 0;
-}
-EXPORT_SYMBOL(of_graph_parse_endpoint);
-
-/**
- * of_graph_get_port_by_id() - get the port matching a given id
- * @parent: pointer to the parent device node
- * @id: id of the port
- *
- * Return: A 'port' node pointer with refcount incremented. The caller
- * has to use of_node_put() on it when done.
- */
-struct device_node *of_graph_get_port_by_id(struct device_node *parent, u32 id)
-{
- struct device_node *node, *port;
-
- node = of_get_child_by_name(parent, "ports");
- if (node)
- parent = node;
-
- for_each_child_of_node(parent, port) {
- u32 port_id = 0;
-
- if (of_node_cmp(port->name, "port") != 0)
- continue;
- of_property_read_u32(port, "reg", &port_id);
- if (id == port_id)
- break;
- }
-
- of_node_put(node);
-
- return port;
-}
-EXPORT_SYMBOL(of_graph_get_port_by_id);
-
-/**
- * of_graph_get_next_endpoint() - get next endpoint node
- * @parent: pointer to the parent device node
- * @prev: previous endpoint node, or NULL to get first
- *
- * Return: An 'endpoint' node pointer with refcount incremented. Refcount
- * of the passed @prev node is decremented.
- */
-struct device_node *of_graph_get_next_endpoint(const struct device_node *parent,
- struct device_node *prev)
-{
- struct device_node *endpoint;
- struct device_node *port;
-
- if (!parent)
- return NULL;
-
- /*
- * Start by locating the port node. If no previous endpoint is specified
- * search for the first port node, otherwise get the previous endpoint
- * parent port node.
- */
- if (!prev) {
- struct device_node *node;
-
- node = of_get_child_by_name(parent, "ports");
- if (node)
- parent = node;
-
- port = of_get_child_by_name(parent, "port");
- of_node_put(node);
-
- if (!port) {
- pr_err("graph: no port node found in %s\n",
- parent->full_name);
- return NULL;
- }
- } else {
- port = of_get_parent(prev);
- if (WARN_ONCE(!port, "%s(): endpoint %s has no parent node\n",
- __func__, prev->full_name))
- return NULL;
- }
-
- while (1) {
- /*
- * Now that we have a port node, get the next endpoint by
- * getting the next child. If the previous endpoint is NULL this
- * will return the first child.
- */
- endpoint = of_get_next_child(port, prev);
- if (endpoint) {
- of_node_put(port);
- return endpoint;
- }
-
- /* No more endpoints under this port, try the next one. */
- prev = NULL;
-
- do {
- port = of_get_next_child(parent, port);
- if (!port)
- return NULL;
- } while (of_node_cmp(port->name, "port"));
- }
-}
-EXPORT_SYMBOL(of_graph_get_next_endpoint);
-
-/**
- * of_graph_get_endpoint_by_regs() - get endpoint node of specific identifiers
- * @parent: pointer to the parent device node
- * @port_reg: identifier (value of reg property) of the parent port node
- * @reg: identifier (value of reg property) of the endpoint node
- *
- * Return: An 'endpoint' node pointer which is identified by reg and at the same
- * is the child of a port node identified by port_reg. reg and port_reg are
- * ignored when they are -1.
- */
-struct device_node *of_graph_get_endpoint_by_regs(
- const struct device_node *parent, int port_reg, int reg)
-{
- struct of_endpoint endpoint;
- struct device_node *node = NULL;
-
- for_each_endpoint_of_node(parent, node) {
- of_graph_parse_endpoint(node, &endpoint);
- if (((port_reg == -1) || (endpoint.port == port_reg)) &&
- ((reg == -1) || (endpoint.id == reg)))
- return node;
- }
-
- return NULL;
-}
-EXPORT_SYMBOL(of_graph_get_endpoint_by_regs);
-
-/**
- * of_graph_get_remote_port_parent() - get remote port's parent node
- * @node: pointer to a local endpoint device_node
- *
- * Return: Remote device node associated with remote endpoint node linked
- * to @node. Use of_node_put() on it when done.
- */
-struct device_node *of_graph_get_remote_port_parent(
- const struct device_node *node)
-{
- struct device_node *np;
- unsigned int depth;
-
- /* Get remote endpoint node. */
- np = of_parse_phandle(node, "remote-endpoint", 0);
-
- /* Walk 3 levels up only if there is 'ports' node. */
- for (depth = 3; depth && np; depth--) {
- np = of_get_next_parent(np);
- if (depth == 2 && of_node_cmp(np->name, "ports"))
- break;
- }
- return np;
-}
-EXPORT_SYMBOL(of_graph_get_remote_port_parent);
-
-/**
- * of_graph_get_remote_port() - get remote port node
- * @node: pointer to a local endpoint device_node
- *
- * Return: Remote port node associated with remote endpoint node linked
- * to @node. Use of_node_put() on it when done.
- */
-struct device_node *of_graph_get_remote_port(const struct device_node *node)
-{
- struct device_node *np;
-
- /* Get remote endpoint node. */
- np = of_parse_phandle(node, "remote-endpoint", 0);
- if (!np)
- return NULL;
- return of_get_next_parent(np);
-}
-EXPORT_SYMBOL(of_graph_get_remote_port);
-
-/**
- * of_graph_get_remote_node() - get remote parent device_node for given port/endpoint
- * @node: pointer to parent device_node containing graph port/endpoint
- * @port: identifier (value of reg property) of the parent port node
- * @endpoint: identifier (value of reg property) of the endpoint node
- *
- * Return: Remote device node associated with remote endpoint node linked
- * to @node. Use of_node_put() on it when done.
- */
-struct device_node *of_graph_get_remote_node(const struct device_node *node,
- u32 port, u32 endpoint)
-{
- struct device_node *endpoint_node, *remote;
-
- endpoint_node = of_graph_get_endpoint_by_regs(node, port, endpoint);
- if (!endpoint_node) {
- pr_debug("no valid endpoint (%d, %d) for node %s\n",
- port, endpoint, node->full_name);
- return NULL;
- }
-
- remote = of_graph_get_remote_port_parent(endpoint_node);
- of_node_put(endpoint_node);
- if (!remote) {
- pr_debug("no valid remote node\n");
- return NULL;
- }
-
- if (!of_device_is_available(remote)) {
- pr_debug("not available for remote node\n");
- return NULL;
- }
-
- return remote;
-}
-EXPORT_SYMBOL(of_graph_get_remote_node);
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-12-27 15:10:49 +0000