Implement syscon_regmap_lookup_by_compatible() to simplify porting kernel code.
Signed-off-by: Ahmad Fatoum <a.fatoum@xxxxxxxxxxxxxx>
---
Forgot to send this one first. Should be applied prior to the fixed up commit.
drivers/mfd/syscon.c | 14 ++++++++++++++
include/mfd/syscon.h | 5 +++++
2 files changed, 19 insertions(+)
diff --git a/drivers/mfd/syscon.c b/drivers/mfd/syscon.c
index 30ed65f73700..b1ff1b1eac5e 100644
--- a/drivers/mfd/syscon.c
+++ b/drivers/mfd/syscon.c
@@ -160,6 +160,20 @@ struct regmap *syscon_node_to_regmap(struct device_node *np)
return syscon->regmap;
}
+struct regmap *syscon_regmap_lookup_by_compatible(const char *s)
+{
+ struct device_node *syscon_np;
+ struct regmap *regmap;
+
+ syscon_np = of_find_compatible_node(NULL, NULL, s);
+ if (!syscon_np)
+ return ERR_PTR(-ENODEV);
+
+ regmap = syscon_node_to_regmap(syscon_np);
+
+ return regmap;
+}
+
static int syscon_probe(struct device_d *dev)
{
struct syscon *syscon;
diff --git a/include/mfd/syscon.h b/include/mfd/syscon.h
index 63b893e4aee7..902f9fa2f339 100644
--- a/include/mfd/syscon.h
+++ b/include/mfd/syscon.h
@@ -21,6 +21,7 @@ void __iomem *syscon_base_lookup_by_pdevname(const char *s);
void __iomem *syscon_base_lookup_by_phandle
(struct device_node *np, const char *property);
struct regmap *syscon_node_to_regmap(struct device_node *np);
+struct regmap *syscon_regmap_lookup_by_compatible(const char *s);
#else
static inline void __iomem *syscon_base_lookup_by_pdevname(const char *s)
{
@@ -37,6 +38,10 @@ static inline struct regmap *syscon_node_to_regmap(struct device_node *np)
{
return ERR_PTR(-ENOSYS);
}
+static inline struct regmap *syscon_regmap_lookup_by_compatible(const char *s)
+{
+ return ERR_PTR(-ENOSYS);
+}
#endif
#endif
--
2.20.1
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