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Commit 324e487f authored by David Collins's avatar David Collins
Browse files

regulator: add rpmh-regulator driver 



Add the rpmh-regulator driver to support PMIC regulator
management via the RPMh hardware block on Qualcomm Technologies,
Inc. SoCs.

rpmh-regulator devices support PMIC regulator management via the
VRM and ARC RPMh accelerators.  The APPS processor communicates
with these hardware blocks via an RSC using command packets.  The
VRM allows changing four parameters for a given regulator: enable
state, output voltage, operating mode, and minimum headroom
voltage.  The ARC allows changing only a single parameter for a
given regulator: its operating level.  This operating level is
fed into CPR which then decides upon a final explicit voltage for
the regulator.

This is a snapshot commit of msm-4.14 as of:
commit 2913cfe33e10 ("Merge "iommu: arm-smmu: wait for writes to
complete before power off"").  Some modifications have been made
to handle rpmh API differences between msm-4.14 and msm-4.19.

Change-Id: I48e9ab5db808036592cfb26042d843a153fbc92c
Signed-off-by: default avatarDavid Collins <collinsd@codeaurora.org>
parent e3299424

drivers/regulator/Kconfig

+9 −0
Original line number Diff line number Diff line
@@ -1057,6 +1057,15 @@ config REGULATOR_WM8994 
	  This driver provides support for the voltage regulators on the

	  WM8994 CODEC.



config REGULATOR_RPMH

	tristate "Qualcomm Technologies, Inc. Legacy RPMh regulator driver"

	depends on QCOM_RPMH

	help

	  This driver supports control of PMIC regulators via the RPMh hardware

	  block found on Qualcomm Technologies Inc. SoCs.  RPMh regulator

	  control allows for voting on regulator state between multiple

	  processors within the SoC.



config REGULATOR_STUB

	tristate "Stub Regulator"

	help

drivers/regulator/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -134,6 +134,7 @@ obj-$(CONFIG_REGULATOR_WM8350) += wm8350-regulator.o 
obj-$(CONFIG_REGULATOR_WM8400) += wm8400-regulator.o

obj-$(CONFIG_REGULATOR_WM8994) += wm8994-regulator.o



obj-$(CONFIG_REGULATOR_RPMH) += rpmh-regulator.o

obj-$(CONFIG_REGULATOR_STUB) += stub-regulator.o



ccflags-$(CONFIG_REGULATOR_DEBUG) += -DDEBUG

drivers/regulator/rpmh-regulator.c

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File added.

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