mfd: pcf50633: Remove remaining PCF50633 support

Remove the remaining parts of the 50633, the core, headers and glue.

The pcf50633 was used as part of the OpenMoko devices but
the support for its main chip was recently removed in:
commit 61b7f8920b17 ("ARM: s3c: remove all s3c24xx support")

See https://lore.kernel.org/all/Z8z236h4B5A6Ki3D@gallifrey/

Remove it.

Signed-off-by: "Dr. David Alan Gilbert" <linux@treblig.org>
Link: https://lore.kernel.org/r/20250311014959.743322-10-linux@treblig.org
Signed-off-by: Lee Jones <lee@kernel.org>

3 files changed, 0 insertions, 313 deletions

diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 4bd31f6a6b4c..22b936310039 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -1132,16 +1132,6 @@ config MFD_RETU
 	  Retu and Tahvo are a multi-function devices found on Nokia
 	  Internet Tablets (770, N800 and N810).
 
-config MFD_PCF50633
-	tristate "NXP PCF50633"
-	depends on I2C
-	select REGMAP_I2C
-	help
-	  Say yes here if you have NXP PCF50633 chip on your board.
-	  This core driver provides register access and IRQ handling
-	  facilities, and registers devices for the various functions
-	  so that function-specific drivers can bind to them.
-
 config MFD_PM8XXX
 	tristate "Qualcomm PM8xxx PMIC chips driver"
 	depends on ARM || HEXAGON || COMPILE_TEST
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index b850bc1758a4..948cbdf42a18 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -183,8 +183,6 @@ obj-$(CONFIG_MFD_MT6370)	+= mt6370.o
 mt6397-objs			:= mt6397-core.o mt6397-irq.o mt6358-irq.o
 obj-$(CONFIG_MFD_MT6397)	+= mt6397.o
 
-pcf50633-objs			:= pcf50633-core.o
-obj-$(CONFIG_MFD_PCF50633)	+= pcf50633.o
 obj-$(CONFIG_RZ_MTU3)		+= rz-mtu3.o
 obj-$(CONFIG_ABX500_CORE)	+= abx500-core.o
 obj-$(CONFIG_MFD_DB8500_PRCMU)	+= db8500-prcmu.o
diff --git a/drivers/mfd/pcf50633-core.c b/drivers/mfd/pcf50633-core.c
deleted file mode 100644
index 5605f176061a..000000000000
--- a/drivers/mfd/pcf50633-core.c
+++ /dev/null
@@ -1,301 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/* NXP PCF50633 Power Management Unit (PMU) driver
- *
- * (C) 2006-2008 by Openmoko, Inc.
- * Author: Harald Welte <laforge@openmoko.org>
- * 	   Balaji Rao <balajirrao@openmoko.org>
- * All rights reserved.
- */
-
-#include <linux/kernel.h>
-#include <linux/device.h>
-#include <linux/sysfs.h>
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/interrupt.h>
-#include <linux/workqueue.h>
-#include <linux/platform_device.h>
-#include <linux/i2c.h>
-#include <linux/pm.h>
-#include <linux/slab.h>
-#include <linux/regmap.h>
-#include <linux/err.h>
-
-#include <linux/mfd/pcf50633/core.h>
-
-/* Read a block of up to 32 regs  */
-int pcf50633_read_block(struct pcf50633 *pcf, u8 reg,
-					int nr_regs, u8 *data)
-{
-	int ret;
-
-	ret = regmap_raw_read(pcf->regmap, reg, data, nr_regs);
-	if (ret != 0)
-		return ret;
-
-	return nr_regs;
-}
-EXPORT_SYMBOL_GPL(pcf50633_read_block);
-
-/* Write a block of up to 32 regs  */
-int pcf50633_write_block(struct pcf50633 *pcf , u8 reg,
-					int nr_regs, u8 *data)
-{
-	return regmap_raw_write(pcf->regmap, reg, data, nr_regs);
-}
-EXPORT_SYMBOL_GPL(pcf50633_write_block);
-
-u8 pcf50633_reg_read(struct pcf50633 *pcf, u8 reg)
-{
-	unsigned int val;
-	int ret;
-
-	ret = regmap_read(pcf->regmap, reg, &val);
-	if (ret < 0)
-		return -1;
-
-	return val;
-}
-EXPORT_SYMBOL_GPL(pcf50633_reg_read);
-
-int pcf50633_reg_write(struct pcf50633 *pcf, u8 reg, u8 val)
-{
-	return regmap_write(pcf->regmap, reg, val);
-}
-EXPORT_SYMBOL_GPL(pcf50633_reg_write);
-
-int pcf50633_reg_set_bit_mask(struct pcf50633 *pcf, u8 reg, u8 mask, u8 val)
-{
-	return regmap_update_bits(pcf->regmap, reg, mask, val);
-}
-EXPORT_SYMBOL_GPL(pcf50633_reg_set_bit_mask);
-
-int pcf50633_reg_clear_bits(struct pcf50633 *pcf, u8 reg, u8 val)
-{
-	return regmap_update_bits(pcf->regmap, reg, val, 0);
-}
-EXPORT_SYMBOL_GPL(pcf50633_reg_clear_bits);
-
-/* sysfs attributes */
-static ssize_t dump_regs_show(struct device *dev,
-			      struct device_attribute *attr, char *buf)
-{
-	struct pcf50633 *pcf = dev_get_drvdata(dev);
-	u8 dump[16];
-	int n, n1, idx = 0;
-	char *buf1 = buf;
-	static u8 address_no_read[] = { /* must be ascending */
-		PCF50633_REG_INT1,
-		PCF50633_REG_INT2,
-		PCF50633_REG_INT3,
-		PCF50633_REG_INT4,
-		PCF50633_REG_INT5,
-		0 /* terminator */
-	};
-
-	for (n = 0; n < 256; n += sizeof(dump)) {
-		for (n1 = 0; n1 < sizeof(dump); n1++)
-			if (n == address_no_read[idx]) {
-				idx++;
-				dump[n1] = 0x00;
-			} else
-				dump[n1] = pcf50633_reg_read(pcf, n + n1);
-
-		buf1 += sprintf(buf1, "%*ph\n", (int)sizeof(dump), dump);
-	}
-
-	return buf1 - buf;
-}
-static DEVICE_ATTR_ADMIN_RO(dump_regs);
-
-static ssize_t resume_reason_show(struct device *dev,
-				  struct device_attribute *attr, char *buf)
-{
-	struct pcf50633 *pcf = dev_get_drvdata(dev);
-	int n;
-
-	n = sprintf(buf, "%02x%02x%02x%02x%02x\n",
-				pcf->resume_reason[0],
-				pcf->resume_reason[1],
-				pcf->resume_reason[2],
-				pcf->resume_reason[3],
-				pcf->resume_reason[4]);
-
-	return n;
-}
-static DEVICE_ATTR_ADMIN_RO(resume_reason);
-
-static struct attribute *pcf_sysfs_entries[] = {
-	&dev_attr_dump_regs.attr,
-	&dev_attr_resume_reason.attr,
-	NULL,
-};
-
-static struct attribute_group pcf_attr_group = {
-	.name	= NULL,			/* put in device directory */
-	.attrs	= pcf_sysfs_entries,
-};
-
-static void
-pcf50633_client_dev_register(struct pcf50633 *pcf, const char *name,
-						struct platform_device **pdev)
-{
-	int ret;
-
-	*pdev = platform_device_alloc(name, -1);
-	if (!*pdev) {
-		dev_err(pcf->dev, "Failed to allocate %s\n", name);
-		return;
-	}
-
-	(*pdev)->dev.parent = pcf->dev;
-
-	ret = platform_device_add(*pdev);
-	if (ret) {
-		dev_err(pcf->dev, "Failed to register %s: %d\n", name, ret);
-		platform_device_put(*pdev);
-		*pdev = NULL;
-	}
-}
-
-static const struct regmap_config pcf50633_regmap_config = {
-	.reg_bits = 8,
-	.val_bits = 8,
-};
-
-static int pcf50633_probe(struct i2c_client *client)
-{
-	struct pcf50633 *pcf;
-	struct platform_device *pdev;
-	struct pcf50633_platform_data *pdata = dev_get_platdata(&client->dev);
-	int i, j, ret;
-	int version, variant;
-
-	if (!client->irq) {
-		dev_err(&client->dev, "Missing IRQ\n");
-		return -ENOENT;
-	}
-
-	pcf = devm_kzalloc(&client->dev, sizeof(*pcf), GFP_KERNEL);
-	if (!pcf)
-		return -ENOMEM;
-
-	i2c_set_clientdata(client, pcf);
-	pcf->dev = &client->dev;
-	pcf->pdata = pdata;
-
-	mutex_init(&pcf->lock);
-
-	pcf->regmap = devm_regmap_init_i2c(client, &pcf50633_regmap_config);
-	if (IS_ERR(pcf->regmap)) {
-		ret = PTR_ERR(pcf->regmap);
-		dev_err(pcf->dev, "Failed to allocate register map: %d\n", ret);
-		return ret;
-	}
-
-	version = pcf50633_reg_read(pcf, 0);
-	variant = pcf50633_reg_read(pcf, 1);
-	if (version < 0 || variant < 0) {
-		dev_err(pcf->dev, "Unable to probe pcf50633\n");
-		ret = -ENODEV;
-		return ret;
-	}
-
-	dev_info(pcf->dev, "Probed device version %d variant %d\n",
-							version, variant);
-
-	/* Create sub devices */
-	pcf50633_client_dev_register(pcf, "pcf50633-input", &pcf->input_pdev);
-	pcf50633_client_dev_register(pcf, "pcf50633-rtc", &pcf->rtc_pdev);
-	pcf50633_client_dev_register(pcf, "pcf50633-mbc", &pcf->mbc_pdev);
-	pcf50633_client_dev_register(pcf, "pcf50633-adc", &pcf->adc_pdev);
-	pcf50633_client_dev_register(pcf, "pcf50633-backlight", &pcf->bl_pdev);
-
-
-	for (i = 0; i < PCF50633_NUM_REGULATORS; i++) {
-		pdev = platform_device_alloc("pcf50633-regulator", i);
-		if (!pdev) {
-			ret = -ENOMEM;
-			goto err2;
-		}
-
-		pdev->dev.parent = pcf->dev;
-		ret = platform_device_add_data(pdev, &pdata->reg_init_data[i],
-					       sizeof(pdata->reg_init_data[i]));
-		if (ret)
-			goto err;
-
-		ret = platform_device_add(pdev);
-		if (ret)
-			goto err;
-
-		pcf->regulator_pdev[i] = pdev;
-	}
-
-	ret = sysfs_create_group(&client->dev.kobj, &pcf_attr_group);
-	if (ret)
-		dev_warn(pcf->dev, "error creating sysfs entries\n");
-
-	if (pdata->probe_done)
-		pdata->probe_done(pcf);
-
-	return 0;
-
-err:
-	platform_device_put(pdev);
-err2:
-	for (j = 0; j < i; j++)
-		platform_device_put(pcf->regulator_pdev[j]);
-
-	return ret;
-}
-
-static void pcf50633_remove(struct i2c_client *client)
-{
-	struct pcf50633 *pcf = i2c_get_clientdata(client);
-	int i;
-
-	sysfs_remove_group(&client->dev.kobj, &pcf_attr_group);
-
-	platform_device_unregister(pcf->input_pdev);
-	platform_device_unregister(pcf->rtc_pdev);
-	platform_device_unregister(pcf->mbc_pdev);
-	platform_device_unregister(pcf->adc_pdev);
-	platform_device_unregister(pcf->bl_pdev);
-
-	for (i = 0; i < PCF50633_NUM_REGULATORS; i++)
-		platform_device_unregister(pcf->regulator_pdev[i]);
-}
-
-static const struct i2c_device_id pcf50633_id_table[] = {
-	{"pcf50633", 0x73},
-	{/* end of list */}
-};
-MODULE_DEVICE_TABLE(i2c, pcf50633_id_table);
-
-static struct i2c_driver pcf50633_driver = {
-	.driver = {
-		.name	= "pcf50633",
-		/* going.... .pm	= pm_sleep_ptr(&pcf50633_pm), */
-	},
-	.id_table = pcf50633_id_table,
-	.probe = pcf50633_probe,
-	.remove = pcf50633_remove,
-};
-
-static int __init pcf50633_init(void)
-{
-	return i2c_add_driver(&pcf50633_driver);
-}
-
-static void __exit pcf50633_exit(void)
-{
-	i2c_del_driver(&pcf50633_driver);
-}
-
-MODULE_DESCRIPTION("I2C chip driver for NXP PCF50633 PMU");
-MODULE_AUTHOR("Harald Welte <laforge@openmoko.org>");
-MODULE_LICENSE("GPL");
-
-subsys_initcall(pcf50633_init);
-module_exit(pcf50633_exit);