1 files changed, 38 insertions, 11 deletions

diff --git a/drivers/mfd/lp87565.c b/drivers/mfd/lp87565.c
index 4a5c8ade4ae0..9488d3793c10 100644
--- a/drivers/mfd/lp87565.c
+++ b/drivers/mfd/lp87565.c
@@ -1,14 +1,16 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
- * Copyright (C) 2017 Texas Instruments Incorporated - http://www.ti.com/
+ * Copyright (C) 2017 Texas Instruments Incorporated - https://www.ti.com/
  *
  * Author: Keerthy <j-keerthy@ti.com>
  */
 
+#include <linux/gpio/consumer.h>
+#include <linux/i2c.h>
 #include <linux/interrupt.h>
 #include <linux/mfd/core.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
-#include <linux/of_device.h>
 #include <linux/regmap.h>
 
 #include <linux/mfd/lp87565.h>
@@ -27,6 +29,10 @@ static const struct mfd_cell lp87565_cells[] = {
 static const struct of_device_id of_lp87565_match_table[] = {
 	{ .compatible = "ti,lp87565", },
 	{
+		.compatible = "ti,lp87524-q1",
+		.data = (void *)LP87565_DEVICE_TYPE_LP87524_Q1,
+	},
+	{
 		.compatible = "ti,lp87565-q1",
 		.data = (void *)LP87565_DEVICE_TYPE_LP87565_Q1,
 	},
@@ -38,11 +44,9 @@ static const struct of_device_id of_lp87565_match_table[] = {
 };
 MODULE_DEVICE_TABLE(of, of_lp87565_match_table);
 
-static int lp87565_probe(struct i2c_client *client,
-			 const struct i2c_device_id *ids)
+static int lp87565_probe(struct i2c_client *client)
 {
 	struct lp87565 *lp87565;
-	const struct of_device_id *of_id;
 	int ret;
 	unsigned int otpid;
 
@@ -60,6 +64,24 @@ static int lp87565_probe(struct i2c_client *client,
 		return ret;
 	}
 
+	lp87565->reset_gpio = devm_gpiod_get_optional(lp87565->dev, "reset",
+						      GPIOD_OUT_LOW);
+	if (IS_ERR(lp87565->reset_gpio)) {
+		ret = PTR_ERR(lp87565->reset_gpio);
+		if (ret == -EPROBE_DEFER)
+			return ret;
+	}
+
+	if (lp87565->reset_gpio) {
+		gpiod_set_value_cansleep(lp87565->reset_gpio, 1);
+		/* The minimum assertion time is undocumented, just guess */
+		usleep_range(2000, 4000);
+
+		gpiod_set_value_cansleep(lp87565->reset_gpio, 0);
+		/* Min 1.2 ms before first I2C transaction */
+		usleep_range(1500, 3000);
+	}
+
 	ret = regmap_read(lp87565->regmap, LP87565_REG_OTP_REV, &otpid);
 	if (ret) {
 		dev_err(lp87565->dev, "Failed to read OTP ID\n");
@@ -67,10 +89,7 @@ static int lp87565_probe(struct i2c_client *client,
 	}
 
 	lp87565->rev = otpid & LP87565_OTP_REV_OTP_ID;
-
-	of_id = of_match_device(of_lp87565_match_table, &client->dev);
-	if (of_id)
-		lp87565->dev_type = (enum lp87565_device_type)of_id->data;
+	lp87565->dev_type = (uintptr_t)i2c_get_match_data(client);
 
 	i2c_set_clientdata(client, lp87565);
 
@@ -79,9 +98,16 @@ static int lp87565_probe(struct i2c_client *client,
 				    NULL, 0, NULL);
 }
 
+static void lp87565_shutdown(struct i2c_client *client)
+{
+	struct lp87565 *lp87565 = i2c_get_clientdata(client);
+
+	gpiod_set_value_cansleep(lp87565->reset_gpio, 1);
+}
+
 static const struct i2c_device_id lp87565_id_table[] = {
-	{ "lp87565-q1", 0 },
-	{ },
+	{ "lp87565-q1" },
+	{ }
 };
 MODULE_DEVICE_TABLE(i2c, lp87565_id_table);
 
@@ -91,6 +117,7 @@ static struct i2c_driver lp87565_driver = {
 		.of_match_table = of_lp87565_match_table,
 	},
 	.probe = lp87565_probe,
+	.shutdown = lp87565_shutdown,
 	.id_table = lp87565_id_table,
 };
 module_i2c_driver(lp87565_driver);