From 613e97218ccbd7f33895cad4525d861810a9d5d5 Mon Sep 17 00:00:00 2001 From: Adam Thomson Date: Tue, 21 Jun 2016 18:50:20 +0100 Subject: device property: Add function to search for named child of device For device nodes in both DT and ACPI, it possible to have named child nodes which contain properties (an existing example being gpio-leds). This adds a function to find a named child node for a device which can be used by drivers for property retrieval. For DT data node name matching, of_node_cmp() and similar functions are made available outside of CONFIG_OF block so the new function can reference these for DT and non-DT builds. For ACPI data node name matching, a helper function is also added which returns false if CONFIG_ACPI is not set, otherwise it performs a string comparison on the data node name. This avoids using the acpi_data_node struct for non CONFIG_ACPI builds, which would otherwise cause a build failure. Signed-off-by: Adam Thomson Acked-by: Sathyanarayana Nujella Acked-by: Rob Herring Acked-by: Rafael J. Wysocki Signed-off-by: Mark Brown --- include/linux/of.h | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) (limited to 'include/linux/of.h') diff --git a/include/linux/of.h b/include/linux/of.h index c7292e8ea080..8455741e313e 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -238,13 +238,6 @@ static inline unsigned long of_read_ulong(const __be32 *cell, int size) #define OF_ROOT_NODE_SIZE_CELLS_DEFAULT 1 #endif -/* Default string compare functions, Allow arch asm/prom.h to override */ -#if !defined(of_compat_cmp) -#define of_compat_cmp(s1, s2, l) strcasecmp((s1), (s2)) -#define of_prop_cmp(s1, s2) strcmp((s1), (s2)) -#define of_node_cmp(s1, s2) strcasecmp((s1), (s2)) -#endif - #define OF_IS_DYNAMIC(x) test_bit(OF_DYNAMIC, &x->_flags) #define OF_MARK_DYNAMIC(x) set_bit(OF_DYNAMIC, &x->_flags) @@ -726,6 +719,13 @@ static inline void of_property_clear_flag(struct property *p, unsigned long flag #define of_match_node(_matches, _node) NULL #endif /* CONFIG_OF */ +/* Default string compare functions, Allow arch asm/prom.h to override */ +#if !defined(of_compat_cmp) +#define of_compat_cmp(s1, s2, l) strcasecmp((s1), (s2)) +#define of_prop_cmp(s1, s2) strcmp((s1), (s2)) +#define of_node_cmp(s1, s2) strcasecmp((s1), (s2)) +#endif + #if defined(CONFIG_OF) && defined(CONFIG_NUMA) extern int of_node_to_nid(struct device_node *np); #else -- cgit v1.2.3 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 --- include/linux/of.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux/of.h') diff --git a/include/linux/of.h b/include/linux/of.h index 74eb28cadbef..33c184d3dcd8 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -324,6 +324,8 @@ extern int of_property_read_string_helper(const struct device_node *np, const char **out_strs, size_t sz, int index); extern int of_device_is_compatible(const struct device_node *device, const char *); +extern int of_device_compatible_match(struct device_node *device, + const char *const *compat); extern bool of_device_is_available(const struct device_node *device); extern bool of_device_is_big_endian(const struct device_node *device); extern const void *of_get_property(const struct device_node *node, -- cgit v1.2.3