linux-toradex.git/include/linux/regulator, branch v3.0.79

regulator: Support voltage offsets to compensate for drops in system

2011-05-27T09:34:37+00:00

Some systems, particularly physically large systems used for early
prototyping, may experience substantial voltage drops between the regulator
and the consumers as a result of long traces in the system. With these
systems voltages may need to be set higher than requested in order to
ensure reliable system operation.

Allow systems to work around such hardware issues by allowing constraints
to supply an offset to be applied to any requested and reported voltages.
This is not ideal, especially since the voltage drop may be load dependant,
but is sufficient for most affected systems, it is not expected to be used
in production hardware. The offset is applied after all constraint
processing so constraints should be specified in terms of consumer values
not physically configured values.

Signed-off-by: Mark Brown 
Signed-off-by: Liam Girdwood

regulator: Remove supply_regulator_dev from machine configuration

2011-05-27T09:34:37+00:00

supply_regulator_dev (using a struct pointer) has been deprecated in favour
of supply_regulator (using a regulator name) for quite a few releases
now with a warning generated if it is used and there are no current in tree
users so just remove the code.

Signed-off-by: Mark Brown 
Signed-off-by: Liam Girdwood

mach-ux500: voltage domain regulators for DB8500

2011-05-24T20:20:23+00:00

The DB8500 has ePOD:s (electronic power domains) which are possible
to switch on/off to deactivate silicon blocks on the DB8500 SoC
by cutting their power without retention. We model these as simple
regulators with one bit on/off settings.

Acked-by: Liam Girdwood 
Acked-by: Mark Brown 
Signed-off-by: Bengt Jonsson 
Signed-off-by: Sundar Iyer 
Signed-off-by: Jonas Aberg 
Signed-off-by: Virupax Sadashivpetimath 
Signed-off-by: Martin Persson 
Signed-off-by: Linus Walleij

regulator: provide consumer interface for fall/rise time

2011-03-26T14:15:06+00:00

This exposes the functionality for rise/fall fime when setting
voltage to the consumers.

Cc: Bengt Jonsson 
Signed-off-by: Linus Walleij 
Acked-by: Mark Brown 
Signed-off-by: Liam Girdwood

regulator: add set_voltage_time_sel infrastructure

2011-03-26T14:15:06+00:00

This makes it possible to set the stabilization time for voltage
regulators in the same manner as enable_time(). The interface
only supports regulators that implements fixed selectors.

Cc: Bengt Jonsson 
Signed-off-by: Linus Walleij 
Acked-by: Mark Brown 
Signed-off-by: Liam Girdwood

regulator: initialization for ab8500 regulators

2011-03-26T14:15:05+00:00

The regulators on the AB8500 have a lot of custom
hardware control settings pertaining to 8 external
signals, settings which are board-specific and need
be provided from the platform at startup.

Initialization added for regulators Vana, VextSupply1,
VextSupply2, VextSupply3, Vaux1, Vaux2, Vaux3, VTVout,
Vintcore12, Vaudio, Vdmic, Vamic1, Vamic2, VrefDDR.

Signed-off-by: Bengt Jonsson 
Reviewed-by: Rickard Andersson 
Reviewed-by: Jonas Aberg 
Signed-off-by: Linus Walleij 
Acked-by: Mark Brown 
Signed-off-by: Liam Girdwood

regulator: add support for USB voltage regulator

2011-03-26T14:15:05+00:00

Signed-off-by: Bengt Jonsson 
Signed-off-by: Linus Walleij 
Acked-by: Mark Brown 
Signed-off-by: Liam Girdwood

Regulator: add suspend-finish API for regulator core.

2011-03-26T14:15:04+00:00

The regulator core had suspend-prepare that turns off the regulators
when entering a system-wide suspend. However, it did not have
suspend-finish that pairs with suspend-prepare and the regulator core
has assumed that the regulator devices and their drivers support
autonomous recover at resume.

This patch adds regulator_suspend_finish that pairs with the
previously-existed regulator_suspend_prepare. The function
regulator_suspend_finish turns on the regulators that have always_on set
or positive use_count so that we can reset the regulator states
appropriately at resume.

In regulator_suspend_finish, if has_full_constraints, it disables
unnecessary regulators.

Signed-off-by: MyungJoo Ham 
Signed-off-by: Kyungmin Park 
Acked-by: Mark Brown 
--
Updates
v3
	comments corrected (Thanks to Igor)
v2
	disable unnecessary regulators (Thanks to Mark)
Signed-off-by: Liam Girdwood

regulator: Add initial per-regulator debugfs support

2011-01-12T14:33:05+00:00

We only expose the use and open counts to userspace, providing a tiny
bit of insight into what the API is up to.

Signed-off-by: Mark Brown 
Signed-off-by: Liam Girdwood

regulator: Add API to re-apply voltage to hardware

2011-01-12T14:33:05+00:00

When cooperating with an external control source the regulator setup
may be changed underneath the API. Currently consumers can just redo
the regulator_set_voltage() to restore a previously set configuration
but provide an explicit API for doing this as optimsations in the
regulator_set_voltage() implementation will shortly prevent that.

Signed-off-by: Mark Brown 
Signed-off-by: Liam Girdwood