X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=include%2Ffdtdec.h;h=4ae77be9ba7c8bf09860606645db711db0911fb2;hb=dee8abcd80d0981f7a1c2bb5d1f2e9313fddf189;hp=a7e6ee7fdfd9afc2284e71cbdc8ee423aa695bcc;hpb=28b62f0de361ae640eb286969536a236cc8febda;p=karo-tx-uboot.git
diff --git a/include/fdtdec.h b/include/fdtdec.h
index a7e6ee7fdf..4ae77be9ba 100644
--- a/include/fdtdec.h
+++ b/include/fdtdec.h
@@ -40,6 +40,27 @@ struct fdt_memory {
fdt_addr_t end;
};
+/*
+ * Information about a resource. start is the first address of the resource
+ * and end is the last address (inclusive). The length of the resource will
+ * be equal to: end - start + 1.
+ */
+struct fdt_resource {
+ fdt_addr_t start;
+ fdt_addr_t end;
+};
+
+/**
+ * Compute the size of a resource.
+ *
+ * @param res the resource to operate on
+ * @return the size of the resource
+ */
+static inline fdt_size_t fdt_resource_size(const struct fdt_resource *res)
+{
+ return res->end - res->start + 1;
+}
+
/**
* Compat types that we know about and for which we might have drivers.
* Each is named COMPAT_
_ where is the directory
@@ -94,6 +115,9 @@ enum fdt_compat_id {
COMPAT_SANDBOX_LCD_SDL, /* Sandbox LCD emulation with SDL */
COMPAT_TI_TPS65090, /* Texas Instrument TPS65090 */
COMPAT_NXP_PTN3460, /* NXP PTN3460 DP/LVDS bridge */
+ COMPAT_SAMSUNG_EXYNOS_SYSMMU, /* Exynos sysmmu */
+ COMPAT_PARADE_PS8625, /* Parade PS8622 EDP->LVDS bridge */
+ COMPAT_INTEL_LPC, /* Intel Low Pin Count I/F */
COMPAT_COUNT,
};
@@ -345,6 +369,47 @@ int fdtdec_find_aliases_for_id(const void *blob, const char *name,
int fdtdec_add_aliases_for_id(const void *blob, const char *name,
enum fdt_compat_id id, int *node_list, int maxcount);
+/**
+ * Get the alias sequence number of a node
+ *
+ * This works out whether a node is pointed to by an alias, and if so, the
+ * sequence number of that alias. Aliases are of the form where
+ * is the sequence number. For example spi2 would be sequence number
+ * 2.
+ *
+ * @param blob Device tree blob (if NULL, then error is returned)
+ * @param base Base name for alias (before the underscore)
+ * @param node Node to look up
+ * @param seqp This is set to the sequence number if one is found,
+ * but otherwise the value is left alone
+ * @return 0 if a sequence was found, -ve if not
+ */
+int fdtdec_get_alias_seq(const void *blob, const char *base, int node,
+ int *seqp);
+
+/**
+ * Get the offset of the given alias node
+ *
+ * This looks up an alias in /aliases then finds the offset of that node.
+ *
+ * @param blob Device tree blob (if NULL, then error is returned)
+ * @param name Alias name, e.g. "console"
+ * @return Node offset referred to by that alias, or -ve FDT_ERR_...
+ */
+int fdtdec_get_alias_node(const void *blob, const char *name);
+
+/**
+ * Get the offset of the given chosen node
+ *
+ * This looks up a property in /chosen containing the path to another node,
+ * then finds the offset of that node.
+ *
+ * @param blob Device tree blob (if NULL, then error is returned)
+ * @param name Property name, e.g. "stdout-path"
+ * @return Node offset referred to by that chosen node, or -ve FDT_ERR_...
+ */
+int fdtdec_get_chosen_node(const void *blob, const char *name);
+
/*
* Get the name for a compatible ID
*
@@ -554,4 +619,46 @@ struct fmap_entry {
*/
int fdtdec_read_fmap_entry(const void *blob, int node, const char *name,
struct fmap_entry *entry);
+
+/**
+ * Obtain an indexed resource from a device property.
+ *
+ * @param fdt FDT blob
+ * @param node node to examine
+ * @param property name of the property to parse
+ * @param index index of the resource to retrieve
+ * @param res returns the resource
+ * @return 0 if ok, negative on error
+ */
+int fdt_get_resource(const void *fdt, int node, const char *property,
+ unsigned int index, struct fdt_resource *res);
+
+/**
+ * Obtain a named resource from a device property.
+ *
+ * Look up the index of the name in a list of strings and return the resource
+ * at that index.
+ *
+ * @param fdt FDT blob
+ * @param node node to examine
+ * @param property name of the property to parse
+ * @param prop_names name of the property containing the list of names
+ * @param name the name of the entry to look up
+ * @param res returns the resource
+ */
+int fdt_get_named_resource(const void *fdt, int node, const char *property,
+ const char *prop_names, const char *name,
+ struct fdt_resource *res);
+
+/**
+ * Look at the reg property of a device node that represents a PCI device
+ * and parse the bus, device and function number from it.
+ *
+ * @param fdt FDT blob
+ * @param node node to examine
+ * @param bdf returns bus, device, function triplet
+ * @return 0 if ok, negative on error
+ */
+int fdtdec_pci_get_bdf(const void *fdt, int node, int *bdf);
+
#endif