From b9c13fe32faaa71c4e4f8a426d79f8c93495e9f9 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Fri, 8 Jul 2016 08:35:59 +1000 Subject: dt: Add of_device_compatible_match() This provides an equivalent of of_fdt_match() for non-flat trees. This is more practical than matching an array of of_device_id structs when converting a bunch of existing users of of_fdt_match(). Signed-off-by: Benjamin Herrenschmidt Acked-by: Rob Herring Signed-off-by: Michael Ellerman --- drivers/of/base.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) (limited to 'drivers/of/base.c') diff --git a/drivers/of/base.c b/drivers/of/base.c index ebf84e3b56d5..c382e1fcd988 100644 --- a/drivers/of/base.c +++ b/drivers/of/base.c @@ -493,6 +493,28 @@ int of_device_is_compatible(const struct device_node *device, } EXPORT_SYMBOL(of_device_is_compatible); +/** Checks if the device is compatible with any of the entries in + * a NULL terminated array of strings. Returns the best match + * score or 0. + */ +int of_device_compatible_match(struct device_node *device, + const char *const *compat) +{ + unsigned int tmp, score = 0; + + if (!compat) + return 0; + + while (*compat) { + tmp = of_device_is_compatible(device, *compat); + if (tmp > score) + score = tmp; + compat++; + } + + return score; +} + /** * of_machine_is_compatible - Test root of device tree for a given compatible value * @compat: compatible string to look for in root node's compatible property. -- cgit