9c38a8d17d
Create a regulator driver to control all regulators on the Qualcomm
PM8921 PMIC chip. This chip contains many different types of
regulators with a wide range of abilities and voltage ranges.
Eight different regulator types are available on the PM8921. These
are managed via 7 different type values in the driver:
LDO - low drop out regulator (supports both NMOS and PMOS LDOs)
NLDO1200 - 1.2A NMOS LDO (different control structure than other LDOs)
SMPS - switched-mode power supply
FTSMPS - fast transient SMPS
VS - voltage switch
VS300 - 300mA voltage switch (different control structure than
other switches)
NCP - negative charge pump
The driver interfaces with the PMIC using Qualcomm's SSBI bus.
Calls to this bus are abtracted through the pm8xxx_readb/writeb API.
Change-Id: I01fb755c6be8e3f32c86fef079b5740edfc39f14
Signed-off-by: David Collins <collinsd@codeaurora.org>
[sboyd: Take only pm8921-core bits]