regulator: sm5703: Remove because it is unused and fails to build

This file does not compile because <linux/mfd/sm5703.h> is missing.
In KConfig, it depends on MFD_SM5703.

Both MFD_SM5703 and the missing include rely on another patch that never
got merged. The last iteration related to this patch is [1].

So remove this dead-code and undo commit e8858ba8 ("regulator:
sm5703-regulator: Add regulators support for SM5703 MFD")

[1]: https://lore.kernel.org/lkml/20220423085319.483524-5-markuss.broks@gmail.com/Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://patch.msgid.link/0f5da91a05e7343d290c88e3c583b674cf6219ac.1725910247.git.christophe.jaillet@wanadoo.frSigned-off-by: Mark Brown <broonie@kernel.org>

drivers/regulator/Kconfig

@@ -1373,13 +1373,6 @@ config REGULATOR_SLG51000
 	  The SLG51000 is seven compact and customizable low dropout
 	  regulators.
 
-config REGULATOR_SM5703
-	tristate "Silicon Mitus SM5703 regulators"
-	depends on MFD_SM5703
-	help
-	  This driver provides support for voltage regulators of SM5703
-	  multi-function device.
-
 config REGULATOR_STM32_BOOSTER
 	tristate "STMicroelectronics STM32 BOOSTER"
 	depends on ARCH_STM32 || COMPILE_TEST

drivers/regulator/Makefile

@@ -160,7 +160,6 @@ obj-$(CONFIG_REGULATOR_S5M8767) += s5m8767.o
 obj-$(CONFIG_REGULATOR_SC2731) += sc2731-regulator.o
 obj-$(CONFIG_REGULATOR_SKY81452) += sky81452-regulator.o
 obj-$(CONFIG_REGULATOR_SLG51000) += slg51000-regulator.o
-obj-$(CONFIG_REGULATOR_SM5703) += sm5703-regulator.o
 obj-$(CONFIG_REGULATOR_STM32_BOOSTER) += stm32-booster.o
 obj-$(CONFIG_REGULATOR_STM32_VREFBUF) += stm32-vrefbuf.o
 obj-$(CONFIG_REGULATOR_STM32_PWR) += stm32-pwr.o

drivers/regulator/sm5703-regulator.c

-// SPDX-License-Identifier: GPL-2.0-only
-
-#include <linux/mfd/sm5703.h>
-#include <linux/module.h>
-#include <linux/mod_devicetable.h>
-#include <linux/platform_device.h>
-#include <linux/regmap.h>
-#include <linux/regulator/driver.h>
-#include <linux/regulator/of_regulator.h>
-
-enum sm5703_regulators {
-	SM5703_BUCK,
-	SM5703_LDO1,
-	SM5703_LDO2,
-	SM5703_LDO3,
-	SM5703_USBLDO1,
-	SM5703_USBLDO2,
-	SM5703_VBUS,
-	SM5703_MAX_REGULATORS,
-};
-
-static const int sm5703_ldo_voltagemap[] = {
-	1500000, 1800000, 2600000, 2800000, 3000000, 3300000,
-};
-
-static const int sm5703_buck_voltagemap[] = {
-	1000000, 1000000, 1000000, 1000000,
-	1000000, 1000000, 1000000, 1000000,
-	1000000, 1000000, 1000000, 1100000,
-	1200000, 1300000, 1400000, 1500000,
-	1600000, 1700000, 1800000, 1900000,
-	2000000, 2100000, 2200000, 2300000,
-	2400000, 2500000, 2600000, 2700000,
-	2800000, 2900000, 3000000, 3000000,
-};
-
-#define SM5703USBLDO(_name, _id)					\
-	[SM5703_USBLDO ## _id] = {					\
-		.name = _name,						\
-		.of_match = _name,					\
-		.regulators_node = "regulators",			\
-		.type = REGULATOR_VOLTAGE,				\
-		.id = SM5703_USBLDO ## _id,				\
-		.ops = &sm5703_regulator_ops_fixed,			\
-		.n_voltages = 1,					\
-		.fixed_uV = SM5703_USBLDO_MICROVOLT,			\
-		.enable_reg = SM5703_REG_USBLDO12,			\
-		.enable_mask = SM5703_REG_EN_USBLDO ##_id,		\
-		.owner			= THIS_MODULE,			\
-	}
-
-#define SM5703VBUS(_name)						\
-	[SM5703_VBUS] = {						\
-		.name = _name,						\
-		.of_match = _name,					\
-		.regulators_node = "regulators",			\
-		.type = REGULATOR_VOLTAGE,				\
-		.id = SM5703_VBUS,					\
-		.ops = &sm5703_regulator_ops_fixed,			\
-		.n_voltages = 1,					\
-		.fixed_uV = SM5703_VBUS_MICROVOLT,			\
-		.enable_reg = SM5703_REG_CNTL,				\
-		.enable_mask = SM5703_OPERATION_MODE_MASK,		\
-		.enable_val = SM5703_OPERATION_MODE_USB_OTG_MODE,	\
-		.disable_val = SM5703_OPERATION_MODE_CHARGING_ON,	\
-		.owner			= THIS_MODULE,			\
-	}
-
-#define SM5703BUCK(_name)						\
-	[SM5703_BUCK] = {						\
-		.name = _name,						\
-		.of_match = _name,					\
-		.regulators_node = "regulators",			\
-		.type = REGULATOR_VOLTAGE,				\
-		.id = SM5703_BUCK,					\
-		.ops = &sm5703_regulator_ops,				\
-		.n_voltages = ARRAY_SIZE(sm5703_buck_voltagemap),	\
-		.volt_table = sm5703_buck_voltagemap,			\
-		.vsel_reg = SM5703_REG_BUCK,				\
-		.vsel_mask = SM5703_BUCK_VOLT_MASK,			\
-		.enable_reg = SM5703_REG_BUCK,				\
-		.enable_mask = SM5703_REG_EN_BUCK,			\
-		.owner			= THIS_MODULE,			\
-	}
-
-#define SM5703LDO(_name, _id)						\
-	[SM5703_LDO ## _id] = {						\
-		.name = _name,						\
-		.of_match = _name,					\
-		.regulators_node = "regulators",			\
-		.type = REGULATOR_VOLTAGE,				\
-		.id = SM5703_LDO ## _id,				\
-		.ops = &sm5703_regulator_ops,				\
-		.n_voltages = ARRAY_SIZE(sm5703_ldo_voltagemap),	\
-		.volt_table = sm5703_ldo_voltagemap,			\
-		.vsel_reg = SM5703_REG_LDO ##_id,			\
-		.vsel_mask = SM5703_LDO_VOLT_MASK,			\
-		.enable_reg = SM5703_REG_LDO ##_id,			\
-		.enable_mask = SM5703_LDO_EN,				\
-		.owner			= THIS_MODULE,			\
-	}
-
-static const struct regulator_ops sm5703_regulator_ops = {
-	.enable			= regulator_enable_regmap,
-	.disable		= regulator_disable_regmap,
-	.is_enabled		= regulator_is_enabled_regmap,
-	.list_voltage		= regulator_list_voltage_table,
-	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
-	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
-};
-
-static const struct regulator_ops sm5703_regulator_ops_fixed = {
-	.enable			= regulator_enable_regmap,
-	.disable		= regulator_disable_regmap,
-	.is_enabled		= regulator_is_enabled_regmap,
-};
-
-static struct regulator_desc sm5703_regulators_desc[SM5703_MAX_REGULATORS] = {
-	SM5703BUCK("buck"),
-	SM5703LDO("ldo1", 1),
-	SM5703LDO("ldo2", 2),
-	SM5703LDO("ldo3", 3),
-	SM5703USBLDO("usbldo1", 1),
-	SM5703USBLDO("usbldo2", 2),
-	SM5703VBUS("vbus"),
-};
-
-static int sm5703_regulator_probe(struct platform_device *pdev)
-{
-	struct device *dev = &pdev->dev;
-	struct regulator_config config = { NULL, };
-	struct regulator_dev *rdev;
-	struct sm5703_dev *sm5703 = dev_get_drvdata(pdev->dev.parent);
-	int i;
-
-	config.dev = dev->parent;
-	config.regmap = sm5703->regmap;
-
-	for (i = 0; i < SM5703_MAX_REGULATORS; i++) {
-		rdev = devm_regulator_register(dev,
-					       &sm5703_regulators_desc[i],
-					       &config);
-		if (IS_ERR(rdev))
-			return dev_err_probe(dev, PTR_ERR(rdev),
-					     "Failed to register a regulator\n");
-	}
-
-	return 0;
-}
-
-static const struct platform_device_id sm5703_regulator_id[] = {
-	{ "sm5703-regulator", 0 },
-	{}
-};
-MODULE_DEVICE_TABLE(platform, sm5703_regulator_id);
-
-static struct platform_driver sm5703_regulator_driver = {
-	.driver = {
-		.name = "sm5703-regulator",
-		.probe_type = PROBE_PREFER_ASYNCHRONOUS,
-	},
-	.probe	= sm5703_regulator_probe,
-	.id_table	= sm5703_regulator_id,
-};
-
-module_platform_driver(sm5703_regulator_driver);
-
-MODULE_DESCRIPTION("Silicon Mitus SM5703 LDO/Buck/USB regulator driver");
-MODULE_AUTHOR("Markuss Broks <markuss.broks@gmail.com>");
-MODULE_LICENSE("GPL");