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

From: [email-masked] (Rajendra Nayak)
Date: Fri, 16 Sep 2011 12:52:16 +0530

On Thursday 15 September 2011 07:51 PM, Mark Brown wrote:
> On Thu, Sep 15, 2011 at 04:52:07PM +0530, Rajendra Nayak wrote:
>> of_regulator_register_devices() registers all regulators
>> as platform devices. Use this to register all twl regulators
>> from the twl driver probe.
>
> Regulators can be devices of any type, not just platform devices.

Right, I am just going to drop this patch, since we would have all
twl child nodes being added as platform devices.

>
>>   drivers/mfd/twl-core.c       |    3 +++
>>   drivers/of/of_regulator.c    |   30 ++++++++++++++++++++++++++++++
>>   include/linux/of_regulator.h |    5 +++++
>
> Again, in the regulator code not hidden away please.
>
>> +/**
>> + * 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;
>> +			}
>
> I'm not entirely sure what this is for?  Surely we should be
> instantiating the subdevices of the MFD in the same way we always have
> done?
>
>> +		}
>> +	}
>> +	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
>>
>
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