mfd: bd718x7: simplify by cleaning unnecessary device data

Most ROHM PMIC sub-devices only use the regmap pointer from
parent device. They can obtain this by dev_get_regamap so in
most cases the MFD device does not need to allocate and populate
the driver data. Simplify drivers by removing this.

The BD70528 still needs the access to watchdog mutex so keep
rohm_regmap_dev in use on BD70528 RTC and WDG drivers for now.

Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

clk: bd718x7: Support ROHM BD71828 clk block

BD71828GW is a single-chip power management IC for battery-powered portable
devices. Add support for controlling BD71828 clk using bd718x7 driver.

Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

mfd: regulator: clk: Split rohm-bd718x7.h

Split the bd718x7.h to ROHM common and bd718x7 specific parts
so that we do not need to add same things in every new ROHM
PMIC header. Please note that this change requires changes also
in bd718x7 sub-device drivers for regulators and clk.

Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

regulator: bd718x7: Remove struct bd718xx_pmic

All the fields in struct bd718xx_pmic are not really necessary.
Remove struct bd718xx_pmic to simplify the code.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Reviewed-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

regulator: bd718XX use pickable ranges

Few regulators in BD71837 and BD71847 can output voltages from
different voltage ranges. Register interface is arranged so that
used range is selected by toggling bits which are not next to actual
voltage selection bits. Then the voltage inside selected range is
determined by voltage selection bits (as usual). Support BD71837
and BD71847 selectible range voltages using new pickable ranges
helpers.

Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

regulator/mfd: bd718xx: rename bd71837/bd71847 common instances

Rename parts of code that support both BD71837 and BD71847 to BD718XX.

Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

regulator/mfd: Support ROHM BD71847 power management IC

BD71847 is reduced version of BD71837. DVS bucks 3 and 4 are
removed as is LDO7. Voltage ranges of some regulators are
expanded.

Add initial support for BD71847 with BD71837 driver.

Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>

regulator: bd71837: Disable voltage monitoring for LDO3/4

There is a HW quirk in BD71837. The shutdown sequence timings for
bucks/LDOs which are enabled via register interface are changed.
At PMIC poweroff the voltage for BUCK6/7 is cut immediately at the
beginning of shut-down sequence. This causes LDO5/6 voltage
monitoring to detect under voltage and force PMIC to emergency
state instead of poweroff. Disable voltage monitoring for LDO5 and
LDO6 at probe to avoid this.

Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org

mfd: bd71837: Core driver for ROHM BD71837 PMIC

ROHM BD71837 PMIC MFD driver providing interrupts and support
for three subsystems:
- clk
- Regulators
- input/power-key

Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Reviewed-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>