From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Thu, 11 Apr 2024 10:27:49 +0200
Subject: Adding upstream version 6.6.15.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 drivers/mfd/mc13xxx-i2c.c | 109 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 109 insertions(+)
 create mode 100644 drivers/mfd/mc13xxx-i2c.c

(limited to 'drivers/mfd/mc13xxx-i2c.c')

diff --git a/drivers/mfd/mc13xxx-i2c.c b/drivers/mfd/mc13xxx-i2c.c
new file mode 100644
index 0000000000..6bc0e755ba
--- /dev/null
+++ b/drivers/mfd/mc13xxx-i2c.c
@@ -0,0 +1,109 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright 2009-2010 Creative Product Design
+ * Marc Reilly marc@cpdesign.com.au
+ */
+
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/mfd/core.h>
+#include <linux/mfd/mc13xxx.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/i2c.h>
+#include <linux/err.h>
+
+#include "mc13xxx.h"
+
+static const struct i2c_device_id mc13xxx_i2c_device_id[] = {
+	{
+		.name = "mc13892",
+		.driver_data = (kernel_ulong_t)&mc13xxx_variant_mc13892,
+	}, {
+		.name = "mc34708",
+		.driver_data = (kernel_ulong_t)&mc13xxx_variant_mc34708,
+	}, {
+		/* sentinel */
+	}
+};
+MODULE_DEVICE_TABLE(i2c, mc13xxx_i2c_device_id);
+
+static const struct of_device_id mc13xxx_dt_ids[] = {
+	{
+		.compatible = "fsl,mc13892",
+		.data = &mc13xxx_variant_mc13892,
+	}, {
+		.compatible = "fsl,mc34708",
+		.data = &mc13xxx_variant_mc34708,
+	}, {
+		/* sentinel */
+	}
+};
+MODULE_DEVICE_TABLE(of, mc13xxx_dt_ids);
+
+static const struct regmap_config mc13xxx_regmap_i2c_config = {
+	.reg_bits = 8,
+	.val_bits = 24,
+
+	.max_register = MC13XXX_NUMREGS,
+
+	.cache_type = REGCACHE_NONE,
+};
+
+static int mc13xxx_i2c_probe(struct i2c_client *client)
+{
+	struct mc13xxx *mc13xxx;
+	int ret;
+
+	mc13xxx = devm_kzalloc(&client->dev, sizeof(*mc13xxx), GFP_KERNEL);
+	if (!mc13xxx)
+		return -ENOMEM;
+
+	dev_set_drvdata(&client->dev, mc13xxx);
+
+	mc13xxx->irq = client->irq;
+
+	mc13xxx->regmap = devm_regmap_init_i2c(client,
+					       &mc13xxx_regmap_i2c_config);
+	if (IS_ERR(mc13xxx->regmap)) {
+		ret = PTR_ERR(mc13xxx->regmap);
+		dev_err(&client->dev, "Failed to initialize regmap: %d\n", ret);
+		return ret;
+	}
+
+	mc13xxx->variant = i2c_get_match_data(client);
+
+	return mc13xxx_common_init(&client->dev);
+}
+
+static void mc13xxx_i2c_remove(struct i2c_client *client)
+{
+	mc13xxx_common_exit(&client->dev);
+}
+
+static struct i2c_driver mc13xxx_i2c_driver = {
+	.id_table = mc13xxx_i2c_device_id,
+	.driver = {
+		.name = "mc13xxx",
+		.of_match_table = mc13xxx_dt_ids,
+	},
+	.probe = mc13xxx_i2c_probe,
+	.remove = mc13xxx_i2c_remove,
+};
+
+static int __init mc13xxx_i2c_init(void)
+{
+	return i2c_add_driver(&mc13xxx_i2c_driver);
+}
+subsys_initcall(mc13xxx_i2c_init);
+
+static void __exit mc13xxx_i2c_exit(void)
+{
+	i2c_del_driver(&mc13xxx_i2c_driver);
+}
+module_exit(mc13xxx_i2c_exit);
+
+MODULE_DESCRIPTION("i2c driver for Freescale MC13XXX PMIC");
+MODULE_AUTHOR("Marc Reilly <marc@cpdesign.com.au");
+MODULE_LICENSE("GPL v2");
-- 
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