Current dev_read_*() API lacks support to get address and size of a "reg" property by name or index. Add support for the same.
Livetree support has been added but not tested.
Signed-off-by: Sekhar Nori nsekhar@ti.com --- drivers/core/fdtaddr.c | 17 +++++++++++++++++ drivers/core/read.c | 20 ++++++++++++++++++++ include/dm/fdtaddr.h | 18 ++++++++++++++++++ include/dm/read.h | 41 +++++++++++++++++++++++++++++++++++++++++ 4 files changed, 96 insertions(+)
diff --git a/drivers/core/fdtaddr.c b/drivers/core/fdtaddr.c index c2873861dacd..6850003a287b 100644 --- a/drivers/core/fdtaddr.c +++ b/drivers/core/fdtaddr.c @@ -129,6 +129,23 @@ fdt_addr_t devfdt_get_addr_name(struct udevice *dev, const char *name) #endif }
+fdt_addr_t devfdt_get_addr_size_name(struct udevice *dev, const char *name, + fdt_size_t *size) +{ +#if CONFIG_IS_ENABLED(OF_CONTROL) + int index; + + index = fdt_stringlist_search(gd->fdt_blob, dev_of_offset(dev), + "reg-names", name); + if (index < 0) + return index; + + return devfdt_get_addr_size_index(dev, index, size); +#else + return FDT_ADDR_T_NONE; +#endif +} + fdt_addr_t devfdt_get_addr(struct udevice *dev) { return devfdt_get_addr_index(dev, 0); diff --git a/drivers/core/read.c b/drivers/core/read.c index 6bda077a34b9..7c6944eeea84 100644 --- a/drivers/core/read.c +++ b/drivers/core/read.c @@ -82,6 +82,15 @@ fdt_addr_t dev_read_addr_index(struct udevice *dev, int index) return devfdt_get_addr_index(dev, index); }
+fdt_addr_t dev_read_addr_size_index(struct udevice *dev, int index, + fdt_size_t *size) +{ + if (ofnode_is_np(dev_ofnode(dev))) + return ofnode_get_add_size_index(dev_ofnode(dev), index, size); + else + return devfdt_get_addr_size_index(dev, index, size); +} + void *dev_remap_addr_index(struct udevice *dev, int index) { fdt_addr_t addr = dev_read_addr_index(dev, index); @@ -102,6 +111,17 @@ fdt_addr_t dev_read_addr_name(struct udevice *dev, const char *name) return dev_read_addr_index(dev, index); }
+fdt_addr_t dev_read_addr_size_name(struct udevice *dev, const char *name, + fdt_size_t *size) +{ + int index = dev_read_stringlist_search(dev, "reg-names", name); + + if (index < 0) + return FDT_ADDR_T_NONE; + else + return dev_read_addr_size_index(dev, index, size); +} + void *dev_remap_addr_name(struct udevice *dev, const char *name) { fdt_addr_t addr = dev_read_addr_name(dev, name); diff --git a/include/dm/fdtaddr.h b/include/dm/fdtaddr.h index 3bc2599b6cbd..57b326cb3362 100644 --- a/include/dm/fdtaddr.h +++ b/include/dm/fdtaddr.h @@ -120,4 +120,22 @@ fdt_addr_t devfdt_get_addr_size_index(struct udevice *dev, int index, */ fdt_addr_t devfdt_get_addr_name(struct udevice *dev, const char *name);
+/** + * devfdt_get_addr_size_name() - Get the reg property and its size for a device, + * indexed by name + * + * Returns the address and size specified in the 'reg' property of a device. + * + * @dev: Pointer to a device + * @name: the 'reg' property can hold a list of <addr, size> pairs, with the + * 'reg-names' property providing named-based identification. @index + * indicates the value to search for in 'reg-names'. + * @size: Pointer to size variable - this function returns the size + * specified in the 'reg' property here + * + * @return addr + */ +fdt_addr_t devfdt_get_addr_size_name(struct udevice *dev, const char *name, + fdt_size_t *size); + #endif diff --git a/include/dm/read.h b/include/dm/read.h index 60b727cbd821..5c38fcc922ae 100644 --- a/include/dm/read.h +++ b/include/dm/read.h @@ -144,6 +144,19 @@ int dev_read_size(struct udevice *dev, const char *propname); */ fdt_addr_t dev_read_addr_index(struct udevice *dev, int index);
+/** + * dev_read_addr_size_index() - Get the indexed reg property of a device + * + * @dev: Device to read from + * @index: the 'reg' property can hold a list of <addr, size> pairs + * and @index is used to select which one is required + * @size: place to put size value (on success) + * + * @return address or FDT_ADDR_T_NONE if not found + */ +fdt_addr_t dev_read_addr_size_index(struct udevice *dev, int index, + fdt_size_t *size); + /** * dev_remap_addr_index() - Get the indexed reg property of a device * as a memory-mapped I/O pointer @@ -168,6 +181,20 @@ void *dev_remap_addr_index(struct udevice *dev, int index); */ fdt_addr_t dev_read_addr_name(struct udevice *dev, const char* name);
+/** + * dev_read_addr_size_name() - Get the reg property of a device, indexed by name + * + * @dev: Device to read from + * @name: the 'reg' property can hold a list of <addr, size> pairs, with the + * 'reg-names' property providing named-based identification. @index + * indicates the value to search for in 'reg-names'. + * @size: place to put size value (on success) + * + * @return address or FDT_ADDR_T_NONE if not found + */ +fdt_addr_t dev_read_addr_size_name(struct udevice *dev, const char *name, + fdt_size_t *size); + /** * dev_remap_addr_name() - Get the reg property of a device, indexed by name, * as a memory-mapped I/O pointer @@ -588,12 +615,26 @@ static inline fdt_addr_t dev_read_addr_index(struct udevice *dev, int index) return devfdt_get_addr_index(dev, index); }
+static inline fdt_addr_t dev_read_addr_size_index(struct udevice *dev, + int index, + fdt_size_t *size) +{ + return devfdt_get_addr_size_index(dev, index, size); +} + static inline fdt_addr_t dev_read_addr_name(struct udevice *dev, const char *name) { return devfdt_get_addr_name(dev, name); }
+static inline fdt_addr_t dev_read_addr_size_name(struct udevice *dev, + const char *name, + fdt_size_t *size) +{ + return devfdt_get_addr_size_name(dev, name, size); +} + static inline fdt_addr_t dev_read_addr(struct udevice *dev) { return devfdt_get_addr(dev);