[RFC PATCH 11/11] DT: regulator: register regulators as platform devices
From: Rajendra Nayak <hidden>
Date: 2011-09-15 11:22:07
Also in:
linux-devicetree, linux-omap
Subsystem:
multifunction devices (mfd), omap2+ support, open firmware and flattened device tree, the rest · Maintainers:
Lee Jones, Aaro Koskinen, Andreas Kemnade, Kevin Hilman, Roger Quadros, Tony Lindgren, Rob Herring, Saravana Kannan, Linus Torvalds
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 <redacted> --- 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