From d973d28aed1781f17016b7e6773b67c1bea97356 Mon Sep 17 00:00:00 2001
From: David Collins <collinsd@codeaurora.org>
Date: Wed, 21 Oct 2020 17:33:07 -0700
Subject: [PATCH] mfd: qcom-i2c-pmic: add debugfs register read/write support

Add support for fine-grain PMIC register reading and writing via
debugfs.

Change-Id: Ia4d15615478df36bb632e450a5d9f7ace1b8ba50
Signed-off-by: David Collins <collinsd@codeaurora.org>
---
 drivers/mfd/qcom-i2c-pmic.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/mfd/qcom-i2c-pmic.c b/drivers/mfd/qcom-i2c-pmic.c
index d0f600a81d53..72702918ade4 100644
--- a/drivers/mfd/qcom-i2c-pmic.c
+++ b/drivers/mfd/qcom-i2c-pmic.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
- * Copyright (c) 2016-2018, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2016-2018, 2020, The Linux Foundation. All rights reserved.
  */
 
 #define pr_fmt(fmt) "I2C PMIC: %s: " fmt, __func__
@@ -13,6 +13,7 @@
 #include <linux/module.h>
 #include <linux/of_platform.h>
 #include <linux/pinctrl/consumer.h>
+#include <linux/qti-regmap-debugfs.h>
 #include <linux/regmap.h>
 #include <linux/slab.h>
 
@@ -534,6 +535,8 @@ static int i2c_pmic_probe(struct i2c_client *client,
 	if (!chip->regmap)
 		return -ENODEV;
 
+	devm_regmap_qti_debugfs_register(chip->dev, chip->regmap);
+
 	i2c_set_clientdata(client, chip);
 	if (!of_property_read_bool(chip->dev->of_node, "interrupt-controller"))
 		goto probe_children;