mfd: tps68470: Remove tps68470 MFD driver

This driver only covered one scenario in which ACPI devices with _HID
INT3472 are found, and its functionality has been taken over by the
intel-skl-int3472 module, so remove it.

Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Daniel Scally <djrscally@gmail.com>
Link: https://lore.kernel.org/r/20210603224007.120560-7-djrscally@gmail.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

drivers/acpi/pmic/Kconfig

@@ -52,7 +52,7 @@ endif	# PMIC_OPREGION
 
 config TPS68470_PMIC_OPREGION
 	bool "ACPI operation region support for TPS68470 PMIC"
-	depends on MFD_TPS68470
+	depends on INTEL_SKL_INT3472
 	help
 	  This config adds ACPI operation region support for TI TPS68470 PMIC.
 	  TPS68470 device is an advanced power management unit that powers

drivers/gpio/Kconfig

@@ -1367,7 +1367,7 @@ config GPIO_TPS65912
 
 config GPIO_TPS68470
 	bool "TPS68470 GPIO"
-	depends on MFD_TPS68470
+	depends on INTEL_SKL_INT3472
 	help
 	  Select this option to enable GPIO driver for the TPS68470
 	  chip family.

drivers/mfd/Kconfig

@@ -1499,24 +1499,6 @@ config MFD_TPS65217
 	  This driver can also be built as a module.  If so, the module
 	  will be called tps65217.
 
-config MFD_TPS68470
-	bool "TI TPS68470 Power Management / LED chips"
-	depends on ACPI && PCI && I2C=y
-	depends on I2C_DESIGNWARE_PLATFORM=y
-	select MFD_CORE
-	select REGMAP_I2C
-	help
-	  If you say yes here you get support for the TPS68470 series of
-	  Power Management / LED chips.
-
-	  These include voltage regulators, LEDs and other features
-	  that are often used in portable devices.
-
-	  This option is a bool as it provides an ACPI operation
-	  region, which must be available before any of the devices
-	  using this are probed. This option also configures the
-	  designware-i2c driver to be built-in, for the same reason.
-
 config MFD_TI_LP873X
 	tristate "TI LP873X Power Management IC"
 	depends on I2C

drivers/mfd/Makefile

@@ -105,7 +105,6 @@ obj-$(CONFIG_MFD_TPS65910)	+= tps65910.o
 obj-$(CONFIG_MFD_TPS65912)	+= tps65912-core.o
 obj-$(CONFIG_MFD_TPS65912_I2C)	+= tps65912-i2c.o
 obj-$(CONFIG_MFD_TPS65912_SPI)  += tps65912-spi.o
-obj-$(CONFIG_MFD_TPS68470)	+= tps68470.o
 obj-$(CONFIG_MFD_TPS80031)	+= tps80031.o
 obj-$(CONFIG_MENELAUS)		+= menelaus.o
 

drivers/mfd/tps68470.c

@@ -1,97 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * TPS68470 chip Parent driver
- *
- * Copyright (C) 2017 Intel Corporation
- *
- * Authors:
- *	Rajmohan Mani <rajmohan.mani@intel.com>
- *	Tianshu Qiu <tian.shu.qiu@intel.com>
- *	Jian Xu Zheng <jian.xu.zheng@intel.com>
- *	Yuning Pu <yuning.pu@intel.com>
- */
-
-#include <linux/acpi.h>
-#include <linux/delay.h>
-#include <linux/i2c.h>
-#include <linux/init.h>
-#include <linux/mfd/core.h>
-#include <linux/mfd/tps68470.h>
-#include <linux/regmap.h>
-
-static const struct mfd_cell tps68470s[] = {
-	{ .name = "tps68470-gpio" },
-	{ .name = "tps68470_pmic_opregion" },
-};
-
-static const struct regmap_config tps68470_regmap_config = {
-	.reg_bits = 8,
-	.val_bits = 8,
-	.max_register = TPS68470_REG_MAX,
-};
-
-static int tps68470_chip_init(struct device *dev, struct regmap *regmap)
-{
-	unsigned int version;
-	int ret;
-
-	/* Force software reset */
-	ret = regmap_write(regmap, TPS68470_REG_RESET, TPS68470_REG_RESET_MASK);
-	if (ret)
-		return ret;
-
-	ret = regmap_read(regmap, TPS68470_REG_REVID, &version);
-	if (ret) {
-		dev_err(dev, "Failed to read revision register: %d\n", ret);
-		return ret;
-	}
-
-	dev_info(dev, "TPS68470 REVID: 0x%x\n", version);
-
-	return 0;
-}
-
-static int tps68470_probe(struct i2c_client *client)
-{
-	struct device *dev = &client->dev;
-	struct regmap *regmap;
-	int ret;
-
-	regmap = devm_regmap_init_i2c(client, &tps68470_regmap_config);
-	if (IS_ERR(regmap)) {
-		dev_err(dev, "devm_regmap_init_i2c Error %ld\n",
-			PTR_ERR(regmap));
-		return PTR_ERR(regmap);
-	}
-
-	i2c_set_clientdata(client, regmap);
-
-	ret = tps68470_chip_init(dev, regmap);
-	if (ret < 0) {
-		dev_err(dev, "TPS68470 Init Error %d\n", ret);
-		return ret;
-	}
-
-	ret = devm_mfd_add_devices(dev, PLATFORM_DEVID_NONE, tps68470s,
-			      ARRAY_SIZE(tps68470s), NULL, 0, NULL);
-	if (ret < 0) {
-		dev_err(dev, "devm_mfd_add_devices failed: %d\n", ret);
-		return ret;
-	}
-
-	return 0;
-}
-
-static const struct acpi_device_id tps68470_acpi_ids[] = {
-	{"INT3472"},
-	{},
-};
-
-static struct i2c_driver tps68470_driver = {
-	.driver = {
-		   .name = "tps68470",
-		   .acpi_match_table = tps68470_acpi_ids,
-	},
-	.probe_new = tps68470_probe,
-};
-builtin_i2c_driver(tps68470_driver);