[RFC PATCH 11/11] DT: regulator: register regulators as platform devices

Rajendra Nayak
2011-09-15T11:22:39Z

of_regulator_register_devices() registers all regulators
as platform devices. Use this to register all twl regulators
from the twl driver probe.

Signed-off-by: Rajendra Nayak <rnayak@ti.com>
---
drivers/mfd/twl-core.c | 3 +++
drivers/of/of_regulator.c | 30 ++++++++++++++++++++++++++++++
include/linux/of_regulator.h | 5 +++++
3 files changed, 38 insertions(+), 0 deletions(-)

diff --git a/drivers/mfd/twl-core.c b/drivers/mfd/twl-core.c
index a12af12..f210e28 100644
--- a/drivers/mfd/twl-core.c
+++ b/drivers/mfd/twl-core.c
@@ -36,6 +36,7 @@
#include <linux/slab.h>
#include <linux/of_irq.h>
#include <linux/irqdomain.h>
+#include <linux/of_regulator.h>

#include <linux/regulator/machine.h>

@@ -1357,6 +1358,8 @@ twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
else
status = add_children(pdata, id->driver_data);

+ of_regulator_register_devices(node);
+
fail:
if (status < 0)
twl_remove(client);
diff --git a/drivers/of/of_regulator.c b/drivers/of/of_regulator.c
index 6f8fd4e..0312a6a 100644
--- a/drivers/of/of_regulator.c
+++ b/drivers/of/of_regulator.c
@@ -12,6 +12,7 @@

#include <linux/slab.h>
#include <linux/of.h>
+#include <linux/of_platform.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/fixed.h>

@@ -151,3 +152,32 @@ struct device_node *of_get_regulator(struct device *dev, const char *supply)
return regnode;
}
EXPORT_SYMBOL(of_get_regulator);
+
+/**
+ * of_regulator_register_devices - Register regulator devices to platform bus
+ * @np: Parent device node with regulator child nodes
+ *
+ * Registers all the regulator and regulator-fixed nodes as platform devices
+ *
+ */
+void of_regulator_register_devices(struct device_node *np)
+{
+ struct device_node *child;
+ struct platform_device *dev;
+
+ for_each_child_of_node(np, child) {
+ if (of_device_is_compatible(child, "regulator")
+ || of_device_is_compatible(child, "regulator-fixed")) {
+ dev = of_device_alloc(child, NULL, NULL);
+ if (!dev)
+ return;
+ dev->dev.bus = &platform_bus_type;
+ if (of_device_add(dev) != 0) {
+ platform_device_put(dev);
+ return;
+ }
+ }
+ }
+ return;
+}
+
diff --git a/include/linux/of_regulator.h b/include/linux/of_regulator.h
index 5fc7329..38cf7e3 100644
--- a/include/linux/of_regulator.h
+++ b/include/linux/of_regulator.h
@@ -15,6 +15,7 @@ extern struct fixed_voltage_config
*of_get_fixed_voltage_config(struct device_node *np);
extern struct device_node *of_get_regulator(struct device *dev,
const char *id);
+extern void of_regulator_register_devices(struct device_node *np);
#else
static inline struct regulator_init_data
*of_get_regulator_init_data(struct device_node *np)
@@ -31,6 +32,10 @@ static inline struct device_node *of_get_regulator(struct device *dev,
{
return NULL;
}
+static inline void of_regulator_register_devices(struct device_node *np)
+{
+ return NULL;
+}
#endif /* CONFIG_OF_REGULATOR */

#endif /* __LINUX_OF_REG_H */
--
1.7.1