regulator: bd96801: ROHM BD96801 PMIC regulators

The ROHM BD96801 "Scalable PMIC" is an automotive grade PMIC which can
scale to different applications by allowing chaining of PMICs. The PMIC
also supports various protection features which can be configured either
to fire IRQs - or to shut down power outputs when failure is detected.

The driver implements basic voltage control and sending error
notifications.

NOTE:
The driver does not support doing configuration which require the PMIC
to be in STBY state. The omitted feature set includes setting safety
limit values, changing LDO voltages and controlling enable state for
some regulators.
Also, the ERRB IRQ is not handled.
Signed-off-by: Matti Vaittinen <mazziesaccount@gmail.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/50cf02b046df218a21a0f9c4820531d821fc20d4.1719473802.git.mazziesaccount@gmail.comSigned-off-by: Lee Jones <lee@kernel.org>

drivers/regulator/Kconfig

@@ -268,6 +268,18 @@ config REGULATOR_BD957XMUF
 	  This driver can also be built as a module. If so, the module
 	  will be called bd9576-regulator.
 
+config REGULATOR_BD96801
+	tristate "ROHM BD96801 Power Regulator"
+	depends on MFD_ROHM_BD96801
+	select REGULATOR_ROHM
+	help
+	  This driver supports voltage regulators on ROHM BD96801 PMIC.
+	  This will enable support for the software controllable buck
+	  and LDO regulators.
+
+	  This driver can also be built as a module. If so, the module
+	  will be called bd96801-regulator.
+
 config REGULATOR_CPCAP
 	tristate "Motorola CPCAP regulator"
 	depends on MFD_CPCAP

drivers/regulator/Makefile

@@ -37,6 +37,7 @@ obj-$(CONFIG_REGULATOR_BD718XX) += bd718x7-regulator.o
 obj-$(CONFIG_REGULATOR_BD9571MWV) += bd9571mwv-regulator.o
 obj-$(CONFIG_REGULATOR_BD957XMUF) += bd9576-regulator.o
 obj-$(CONFIG_REGULATOR_DA903X)	+= da903x-regulator.o
+obj-$(CONFIG_REGULATOR_BD96801) += bd96801-regulator.o
 obj-$(CONFIG_REGULATOR_DA9052)	+= da9052-regulator.o
 obj-$(CONFIG_REGULATOR_DA9055)	+= da9055-regulator.o
 obj-$(CONFIG_REGULATOR_DA9062)	+= da9062-regulator.o