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| author |   Thierry Reding <treding@nvidia.com> | 2020-04-03 19:44:52 +0200 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2020-04-30 12:38:01 +0200 |
| commit | 0da0e31600e8a42c6f1dfaa7a06211c8bb243ea7 (patch) | |
| tree | 5b684291ddb8e32b55c0b358ab9c03b0f7381c95 /drivers/of | |
| parent | Linux 5.7-rc1 (diff) | |
| download | wireguard-linux-0da0e31600e8a42c6f1dfaa7a06211c8bb243ea7.tar.xz wireguard-linux-0da0e31600e8a42c6f1dfaa7a06211c8bb243ea7.zip | |
of: reserved-memory: Support lookup of regions by name
Add support for looking up memory regions by name. This looks up the
given name in the newly introduced memory-region-names property and
returns the memory region at the corresponding index in the memory-
region(s) property.
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'drivers/of')
| -rw-r--r-- | drivers/of/of_reserved_mem.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/of/of_reserved_mem.c b/drivers/of/of_reserved_mem.c index 1a84bc0d5fa8..ed2ff6f01d32 100644 --- a/drivers/of/of_reserved_mem.c +++ b/drivers/of/of_reserved_mem.c @@ -358,6 +358,25 @@ int of_reserved_mem_device_init_by_idx(struct device *dev, EXPORT_SYMBOL_GPL(of_reserved_mem_device_init_by_idx); /** + * of_reserved_mem_device_init_by_name() - assign named reserved memory region + * to given device + * @dev: pointer to the device to configure + * @np: pointer to the device node with 'memory-region' property + * @name: name of the selected memory region + * + * Returns: 0 on success or a negative error-code on failure. + */ +int of_reserved_mem_device_init_by_name(struct device *dev, + struct device_node *np, + const char *name) +{ + int idx = of_property_match_string(np, "memory-region-names", name); + + return of_reserved_mem_device_init_by_idx(dev, np, idx); +} +EXPORT_SYMBOL_GPL(of_reserved_mem_device_init_by_name); + +/** * of_reserved_mem_device_release() - release reserved memory device structures * @dev: Pointer to the device to deconfigure * |