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device property: Implement device_is_compatible()

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Some users want to use the struct device pointer to see if the
device is compatible in terms of Open Firmware specifications,
i.e. if it has a 'compatible' property and it matches to the
given value. Provide inline helper for the users.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Serge Semin <fancer.lancer@gmail.com>
Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Message-ID: <20230609154900.43024-3-andriy.shevchenko@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Andy Shevchenko 2023-06-09 18:48:59 +03:00 committed by Greg Kroah-Hartman
parent 007cfa13e0
commit 2de5897b5c
1 changed files with 12 additions and 0 deletions
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12
include/linux/property.h
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@ -85,6 +85,18 @@ bool fwnode_device_is_compatible(const struct fwnode_handle *fwnode, const char
return fwnode_property_match_string(fwnode, "compatible", compat) >= 0;
}
/**
* 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
*
* Returns: true if matches, otherwise false.
*/
static inline bool device_is_compatible(const struct device *dev, const char *compat)
{
return fwnode_device_is_compatible(dev_fwnode(dev), compat);
}
int fwnode_property_get_reference_args(const struct fwnode_handle *fwnode,
const char *prop, const char *nargs_prop,
unsigned int nargs, unsigned int index,