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-rw-r--r--drivers/mfd/atc260x-i2c.c63
1 files changed, 63 insertions, 0 deletions
diff --git a/drivers/mfd/atc260x-i2c.c b/drivers/mfd/atc260x-i2c.c
new file mode 100644
index 0000000000..fb53b0432a
--- /dev/null
+++ b/drivers/mfd/atc260x-i2c.c
@@ -0,0 +1,63 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * I2C bus interface for ATC260x PMICs
+ *
+ * Copyright (C) 2019 Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
+ * Copyright (C) 2020 Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
+ */
+
+#include <linux/i2c.h>
+#include <linux/mfd/atc260x/core.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/regmap.h>
+
+static int atc260x_i2c_probe(struct i2c_client *client)
+{
+ struct atc260x *atc260x;
+ struct regmap_config regmap_cfg;
+ int ret;
+
+ atc260x = devm_kzalloc(&client->dev, sizeof(*atc260x), GFP_KERNEL);
+ if (!atc260x)
+ return -ENOMEM;
+
+ atc260x->dev = &client->dev;
+ atc260x->irq = client->irq;
+
+ ret = atc260x_match_device(atc260x, &regmap_cfg);
+ if (ret)
+ return ret;
+
+ i2c_set_clientdata(client, atc260x);
+
+ atc260x->regmap = devm_regmap_init_i2c(client, &regmap_cfg);
+ if (IS_ERR(atc260x->regmap)) {
+ ret = PTR_ERR(atc260x->regmap);
+ dev_err(&client->dev, "failed to init regmap: %d\n", ret);
+ return ret;
+ }
+
+ return atc260x_device_probe(atc260x);
+}
+
+static const struct of_device_id atc260x_i2c_of_match[] = {
+ { .compatible = "actions,atc2603c", .data = (void *)ATC2603C },
+ { .compatible = "actions,atc2609a", .data = (void *)ATC2609A },
+ { }
+};
+MODULE_DEVICE_TABLE(of, atc260x_i2c_of_match);
+
+static struct i2c_driver atc260x_i2c_driver = {
+ .driver = {
+ .name = "atc260x",
+ .of_match_table = atc260x_i2c_of_match,
+ },
+ .probe = atc260x_i2c_probe,
+};
+module_i2c_driver(atc260x_i2c_driver);
+
+MODULE_DESCRIPTION("ATC260x PMICs I2C bus interface");
+MODULE_AUTHOR("Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>");
+MODULE_AUTHOR("Cristian Ciocaltea <cristian.ciocaltea@gmail.com>");
+MODULE_LICENSE("GPL");