diff options
| author | Álvaro Fernández Rojas <noltari@gmail.com> | 2018-12-03 19:37:09 +0100 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2018-12-05 06:06:44 -0700 |
| commit | 7959882049a9b389c131eff9a128437ee8ebe08e (patch) | |
| tree | a0b31f0e5dbf3d95ae731918a675c075614db3be /include/dm | |
| parent | bb48470df21c0ce4ebed47f5dc3ea25ff02fd4dd (diff) | |
dm: core: add functions to get/remap I/O addresses by name
This functions allow us to get and remap I/O addresses by name, which is useful when there are multiple reg addresses indexed by reg-names property.
This is needed in bmips dma/eth patch series, but can also be used on many
other drivers.
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'include/dm')
| -rw-r--r-- | include/dm/fdtaddr.h | 13 | ||||
| -rw-r--r-- | include/dm/read.h | 36 |
2 files changed, 49 insertions, 0 deletions
diff --git a/include/dm/fdtaddr.h b/include/dm/fdtaddr.h index 49a6ffd5f8..c171d9bc2f 100644 --- a/include/dm/fdtaddr.h +++ b/include/dm/fdtaddr.h @@ -56,6 +56,19 @@ void *devfdt_remap_addr(struct udevice *dev); void *devfdt_remap_addr_index(struct udevice *dev, int index); /** + * devfdt_remap_addr_name() - Get the reg property of a device, indexed by + * name, as a memory-mapped I/O pointer + * @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'. + * + * @dev: Pointer to a device + * + * @return Pointer to addr, or NULL if there is no such property + */ +void *devfdt_remap_addr_name(struct udevice *dev, const char *name); + +/** * devfdt_map_physmem() - Read device address from reg property of the * device node and map the address into CPU address * space. diff --git a/include/dm/read.h b/include/dm/read.h index a27b8554fb..efcbee15ec 100644 --- a/include/dm/read.h +++ b/include/dm/read.h @@ -125,6 +125,31 @@ fdt_addr_t dev_read_addr_index(struct udevice *dev, int index); void *dev_remap_addr_index(struct udevice *dev, int index); /** + * dev_read_addr_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'. + * + * @return address or FDT_ADDR_T_NONE if not found + */ +fdt_addr_t dev_read_addr_name(struct udevice *dev, const char* name); + +/** + * dev_remap_addr_name() - Get the reg property of a device, indexed by name, + * as a memory-mapped I/O pointer + * + * @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'. + * + * @return pointer or NULL if not found + */ +void *dev_remap_addr_name(struct udevice *dev, const char* name); + +/** * dev_read_addr() - Get the reg property of a device * * @dev: Device to read from @@ -494,6 +519,12 @@ 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_name(struct udevice *dev, + const char *name) +{ + return devfdt_get_addr_name(dev, name); +} + static inline fdt_addr_t dev_read_addr(struct udevice *dev) { return devfdt_get_addr(dev); @@ -514,6 +545,11 @@ static inline void *dev_remap_addr_index(struct udevice *dev, int index) return devfdt_remap_addr_index(dev, index); } +static inline void *dev_remap_addr_name(struct udevice *dev, const char *name) +{ + return devfdt_remap_addr_name(dev, name); +} + static inline fdt_addr_t dev_read_addr_size(struct udevice *dev, const char *propname, fdt_size_t *sizep) |