[Feature] add GA346 baseline version
Change-Id: Ic62933698569507dcf98240cdf5d9931ae34348f
diff --git a/src/kernel/linux/v4.19/drivers/mfd/lp873x.c b/src/kernel/linux/v4.19/drivers/mfd/lp873x.c
new file mode 100644
index 0000000..873c608
--- /dev/null
+++ b/src/kernel/linux/v4.19/drivers/mfd/lp873x.c
@@ -0,0 +1,97 @@
+/*
+ * Copyright (C) 2016 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * Author: Keerthy <j-keerthy@ti.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/interrupt.h>
+#include <linux/mfd/core.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/regmap.h>
+
+#include <linux/mfd/lp873x.h>
+
+static const struct regmap_config lp873x_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = LP873X_REG_MAX,
+};
+
+static const struct mfd_cell lp873x_cells[] = {
+ { .name = "lp873x-regulator", },
+ { .name = "lp873x-gpio", },
+};
+
+static int lp873x_probe(struct i2c_client *client,
+ const struct i2c_device_id *ids)
+{
+ struct lp873x *lp873;
+ int ret;
+ unsigned int otpid;
+
+ lp873 = devm_kzalloc(&client->dev, sizeof(*lp873), GFP_KERNEL);
+ if (!lp873)
+ return -ENOMEM;
+
+ lp873->dev = &client->dev;
+
+ lp873->regmap = devm_regmap_init_i2c(client, &lp873x_regmap_config);
+ if (IS_ERR(lp873->regmap)) {
+ ret = PTR_ERR(lp873->regmap);
+ dev_err(lp873->dev,
+ "Failed to initialize register map: %d\n", ret);
+ return ret;
+ }
+
+ ret = regmap_read(lp873->regmap, LP873X_REG_OTP_REV, &otpid);
+ if (ret) {
+ dev_err(lp873->dev, "Failed to read OTP ID\n");
+ return ret;
+ }
+
+ lp873->rev = otpid & LP873X_OTP_REV_OTP_ID;
+
+ i2c_set_clientdata(client, lp873);
+
+ ret = mfd_add_devices(lp873->dev, PLATFORM_DEVID_AUTO, lp873x_cells,
+ ARRAY_SIZE(lp873x_cells), NULL, 0, NULL);
+
+ return ret;
+}
+
+static const struct of_device_id of_lp873x_match_table[] = {
+ { .compatible = "ti,lp8733", },
+ { .compatible = "ti,lp8732", },
+ {}
+};
+MODULE_DEVICE_TABLE(of, of_lp873x_match_table);
+
+static const struct i2c_device_id lp873x_id_table[] = {
+ { "lp873x", 0 },
+ { },
+};
+MODULE_DEVICE_TABLE(i2c, lp873x_id_table);
+
+static struct i2c_driver lp873x_driver = {
+ .driver = {
+ .name = "lp873x",
+ .of_match_table = of_lp873x_match_table,
+ },
+ .probe = lp873x_probe,
+ .id_table = lp873x_id_table,
+};
+module_i2c_driver(lp873x_driver);
+
+MODULE_AUTHOR("J Keerthy <j-keerthy@ti.com>");
+MODULE_DESCRIPTION("LP873X chip family Multi-Function Device driver");
+MODULE_LICENSE("GPL v2");