mirror of
https://github.com/torvalds/linux.git
synced 2024-12-24 11:51:27 +00:00
a5766f11cf
This improves the machine level API in order to configure
regulator constraints and consumers as platform data and removes the
old string based API that required several calls to set up each regulator.
The intention is to create a struct regulator_init_data, populate
it's fields with constraints, consumers devices, etc and then register
the regulator device from board.c in the standard Linux way.
e.g. regulator LDO2 (supplying codec and sim) platform data.
/* regulator LDO2 consumer devices */
static struct regulator_consumer_supply ldo2_consumers[] = {
{
.dev = &platform_audio_device.dev,
.supply = "codec_avdd",
},
{
.dev = &platform_sim_device.dev,
.supply = "sim_vcc",
}
};
/* regulator LDO2 constraints */
static struct regulator_init_data ldo2_data = {
.constraints = {
.min_uV = 3300000,
.max_uV = 3300000,
.valid_modes_mask = REGULATOR_MODE_NORMAL,
.apply_uV = 1,
},
.num_consumer_supplies = ARRAY_SIZE(ldo2_consumers),
.consumer_supplies = ldo2_consumers,
};
/* machine regulator devices with thier consumers and constraints */
static struct platform_device wm8350_regulator_devices[] = {
{
.name = "wm8350-regulator",
.id = WM8350_LDO_2,
.dev = {
.platform_data = &ldo2_data,
},
},
};
Changes in detail:-
o Removed all const char* regulator config functions in machine API.
o Created new struct regulator_init_data to contain regulator
machine configuration constraints and consmuers.
o Changed set_supply(), set_machine_constraints(),
set_consumer_device_supply() to remove their string identifier
parameters. Also made them static and moved functions nearer top of
core.c.
o Removed no longer used inline func to_rdev()
o Added regulator_get_init_drvdata() to retrieve init data.
o Added struct device* as parameter to regulator_register().
o Changed my email address.
Signed-off-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
31 lines
803 B
Plaintext
31 lines
803 B
Plaintext
Regulator Driver Interface
|
|
==========================
|
|
|
|
The regulator driver interface is relatively simple and designed to allow
|
|
regulator drivers to register their services with the core framework.
|
|
|
|
|
|
Registration
|
|
============
|
|
|
|
Drivers can register a regulator by calling :-
|
|
|
|
struct regulator_dev *regulator_register(struct device *dev,
|
|
struct regulator_desc *regulator_desc);
|
|
|
|
This will register the regulators capabilities and operations to the regulator
|
|
core.
|
|
|
|
Regulators can be unregistered by calling :-
|
|
|
|
void regulator_unregister(struct regulator_dev *rdev);
|
|
|
|
|
|
Regulator Events
|
|
================
|
|
Regulators can send events (e.g. over temp, under voltage, etc) to consumer
|
|
drivers by calling :-
|
|
|
|
int regulator_notifier_call_chain(struct regulator_dev *rdev,
|
|
unsigned long event, void *data);
|