diff options
Diffstat (limited to 'include/linux/property.h')
| -rw-r--r-- | include/linux/property.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/include/linux/property.h b/include/linux/property.h index 9f2585d705a8..55c2692ffa8c 100644 --- a/include/linux/property.h +++ b/include/linux/property.h @@ -80,6 +80,16 @@ int fwnode_property_match_string(const struct fwnode_handle *fwnode, bool fwnode_device_is_available(const struct fwnode_handle *fwnode); +static inline bool fwnode_device_is_big_endian(const struct fwnode_handle *fwnode) +{ + if (fwnode_property_present(fwnode, "big-endian")) + return true; + if (IS_ENABLED(CONFIG_CPU_BIG_ENDIAN) && + fwnode_property_present(fwnode, "native-endian")) + return true; + return false; +} + static inline bool fwnode_device_is_compatible(const struct fwnode_handle *fwnode, const char *compat) { @@ -87,6 +97,22 @@ bool fwnode_device_is_compatible(const struct fwnode_handle *fwnode, const char } /** + * device_is_big_endian - check if a device has BE registers + * @dev: Pointer to the struct device + * + * Returns: true if the device has a "big-endian" property, or if the kernel + * was compiled for BE *and* the device has a "native-endian" property. + * Returns false otherwise. + * + * Callers would nominally use ioread32be/iowrite32be if + * device_is_big_endian() == true, or readl/writel otherwise. + */ +static inline bool device_is_big_endian(const struct device *dev) +{ + return fwnode_device_is_big_endian(dev_fwnode(dev)); +} + +/** * device_is_compatible - match 'compatible' property of the device with a given string * @dev: Pointer to the struct device * @compat: The string to match 'compatible' property with |