mfd: tps65912: Add driver for the TPS65912 PMIC

This patch adds support for TPS65912 PMIC MFD core. It provides
communication through the I2C and SPI interfaces. It contains
the following components:

 - Regulators
 - GPIO controller

Signed-off-by: Andrew F. Davis <afd@ti.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

1 files changed, 79 insertions, 0 deletions

diff --git a/drivers/mfd/tps65912-i2c.c b/drivers/mfd/tps65912-i2c.c
new file mode 100644
index 000000000000..45871403f995
--- /dev/null
+++ b/drivers/mfd/tps65912-i2c.c
@@ -0,0 +1,79 @@
+/*
+ * I2C access driver for TI TPS65912x PMICs
+ *
+ * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
+ *	Andrew F. Davis <afd@ti.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether expressed or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License version 2 for more details.
+ *
+ * Based on the TPS65218 driver and the previous TPS65912 driver by
+ * Margarita Olaya Cabrera <magi@slimlogic.co.uk>
+ */
+
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+
+#include <linux/mfd/tps65912.h>
+
+static const struct of_device_id tps65912_i2c_of_match_table[] = {
+	{ .compatible = "ti,tps65912", },
+	{ /* sentinel */ }
+};
+
+static int tps65912_i2c_probe(struct i2c_client *client,
+			      const struct i2c_device_id *ids)
+{
+	struct tps65912 *tps;
+
+	tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL);
+	if (!tps)
+		return -ENOMEM;
+
+	i2c_set_clientdata(client, tps);
+	tps->dev = &client->dev;
+	tps->irq = client->irq;
+
+	tps->regmap = devm_regmap_init_i2c(client, &tps65912_regmap_config);
+	if (IS_ERR(tps->regmap)) {
+		dev_err(tps->dev, "Failed to initialize register map\n");
+		return PTR_ERR(tps->regmap);
+	}
+
+	return tps65912_device_init(tps);
+}
+
+static int tps65912_i2c_remove(struct i2c_client *client)
+{
+	struct tps65912 *tps = i2c_get_clientdata(client);
+
+	return tps65912_device_exit(tps);
+}
+
+static const struct i2c_device_id tps65912_i2c_id_table[] = {
+	{ "tps65912", 0 },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(i2c, tps65912_i2c_id_table);
+
+static struct i2c_driver tps65912_i2c_driver = {
+	.driver		= {
+		.name	= "tps65912",
+		.of_match_table = tps65912_i2c_of_match_table,
+	},
+	.probe		= tps65912_i2c_probe,
+	.remove		= tps65912_i2c_remove,
+	.id_table       = tps65912_i2c_id_table,
+};
+module_i2c_driver(tps65912_i2c_driver);
+
+MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
+MODULE_DESCRIPTION("TPS65912x I2C Interface Driver");
+MODULE_LICENSE("GPL v2");