Most of new linux drivers are using managed-API to allocate resources. To
ease porting drivers from linux to u-boot, introduce devm_regmap_init() as
a managed API to get a regmap from the device tree.
Signed-off-by: Jean-Jacques Hiblot <jjhib...@ti.com>
---
drivers/core/regmap.c | 26 ++++++++++++++++++++++++++
include/regmap.h | 19 +++++++++++++++++++
2 files changed, 45 insertions(+)
diff --git a/drivers/core/regmap.c b/drivers/core/regmap.c
index e9e55c9d16..f69ff6d12f 100644
--- a/drivers/core/regmap.c
+++ b/drivers/core/regmap.c
@@ -219,6 +219,32 @@ int regmap_init_mem(ofnode node, struct regmap **mapp)
return 0;
}
+
+static void devm_regmap_release(struct udevice *dev, void *res)
+{
+ regmap_uninit(*(struct regmap **)res);
+}
+
+struct regmap *devm_regmap_init(struct udevice *dev,
+ const struct regmap_bus *bus,
+ void *bus_context,
+ const struct regmap_config *config)
+{
+ int rc;
+ struct regmap **mapp;
+
+ mapp = devres_alloc(devm_regmap_release, sizeof(struct regmap *),
+ __GFP_ZERO);
+ if (unlikely(!mapp))
+ return ERR_PTR(-ENOMEM);
+
+ rc = regmap_init_mem(dev_ofnode(dev), mapp);
+ if (rc)
+ return ERR_PTR(rc);
+
+ devres_add(dev, mapp);
+ return *mapp;
+}
#endif
void *regmap_get_range(struct regmap *map, unsigned int range_num)
diff --git a/include/regmap.h b/include/regmap.h
index 0854200a9c..63a362d86d 100644
--- a/include/regmap.h
+++ b/include/regmap.h
@@ -73,6 +73,9 @@ struct regmap_range {
ulong size;
};
+struct regmap_bus;
+struct regmap_config;
+
/**
* struct regmap - a way of accessing hardware/bus registers
*
@@ -332,6 +335,22 @@ int regmap_init_mem_platdata(struct udevice *dev,
fdt_val_t *reg, int count,
int regmap_init_mem_index(ofnode node, struct regmap **mapp, int index);
+/**
+ * devm_regmap_init() - Initialise register map (device managed)
+ *
+ * @dev: Device that will be interacted with
+ * @bus: Bus-specific callbacks to use with device (IGNORED)
+ * @bus_context: Data passed to bus-specific callbacks (IGNORED)
+ * @config: Configuration for register map (IGNORED)
+ *
+ * The return value will be an ERR_PTR() on error or a valid pointer to
+ * a struct regmap.
+ * The structure is automatically freed when the device is unbound
+ */
+struct regmap *devm_regmap_init(struct udevice *dev,
+ const struct regmap_bus *bus,
+ void *bus_context,
+ const struct regmap_config *config);
/**
* regmap_get_range() - Obtain the base memory address of a regmap range
*
--
2.17.1
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