regulator: lp872x: Remove lp872x_dvs_state

After this driver was converted to gpiod, clang started warning:

vers/regulator/lp872x.c:689:57: error: implicit conversion from
enumeration type 'enum lp872x_dvs_state' to different enumeration type
'enum gpiod_flags' [-Werror,-Wenum-conversion]
dvs->gpio = devm_gpiod_get_optional(lp->dev, "ti,dvs", pinstate);
~~~~~~~~~~~~~~~~~~~~~~~ ^~~~~~~~
1 error generated.

lp872x_dvs_state was updated to have values from gpiod_flags but this is
not enough to avoid an implicit conversion warning from either GCC or
clang (although GCC enables this warning under -Wextra instead of -Wall
like clang so it is not seen under normal builds).

Eliminate lp872x_dvs_state in favor of using gpiod_flags everywhere so
that there is no more warning about an implicit conversion.

Fixes: 72bf80cf09c4 ("regulator: lp872x: replacing legacy gpio interface for gpiod")
Link: https://github.com/ClangBuiltLinux/linux/issues/1481
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Link: https://lore.kernel.org/r/20211019004335.193492-1-nathan@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>

regulator: lp872x: replacing legacy gpio interface for gpiod

Removing all linux/gpio.h and linux/of_gpio.h dependencies and replacing
them with the gpiod interface

Signed-off-by: Maíra Canal <maira.canal@usp.br>
Message-Id: <YWma2yTyuwS5XwhY@fedora>
Signed-off-by: Mark Brown <broonie@kernel.org>

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500

Based on 2 normalized pattern(s):

this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license version 2 as
published by the free software foundation

this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license version 2 as
published by the free software foundation #

extracted by the scancode license scanner the SPDX license identifier

GPL-2.0-only

has been chosen to replace the boilerplate/reference in 4122 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Enrico Weigelt <info@metux.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

regulator: lp872x: Add enable GPIO pin support

LP872x regulators are made active via the EN pin, which might be hooked to a
GPIO. This adds support for driving the GPIO high when the driver is in use.

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
Signed-off-by: Mark Brown <broonie@kernel.org>

regulator: add new regulator driver for lp872x

This driver supports TI/National LP8720, LP8725 PMIC.

Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Reviewed-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>