Support for HW request is added in the external regulator
driver. A flag in the board configuration can be set to
let HW control the regulator when there is no SW request.
This means that the regulator will be put in high power
mode when there is a SW request and in HW-request mode
otherwise.
Signed-off-by: NBengt Jonsson <bengt.g.jonsson@stericsson.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>
Reviewed-by: NMattias NILSSON <mattias.i.nilsson@stericsson.com>
Reviewed-by: NJonas ABERG <jonas.aberg@stericsson.com>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>

The ABx500 is capable of controlling three external regulator supplies.
Most commonly on and off are supported, but if an external regulator
chipset or power supply supports high-power and low-power mode settings,
we can control those too.
Signed-off-by: NLee Jones <lee.jones@linaro.org>
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>