Date:   Tue, 26 May 2020 09:42:19 +0000
From:   Ugur Usug <Ugur.Usug@...imintegrated.com>
To:     "linux@...ck-us.net" <linux@...ck-us.net>
CC:     "linux-hwmon@...r.kernel.org" <linux-hwmon@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH] hwmon (pmbus/max20730): add max20710 and debugfs access
 support

This change has 2 parts:
1. Add support for max20710 into the existing max20730 driver.

2. Add debugfs interface support for accessing device specific registers 
(MFR_VOUT_MIN, MFR_DEVSET1 and MFR_DEVSET2) and others 
including OPERATION, ON_OFF_CONFIG, SMB_ALERT_MASK, 
VOUT_MODE, VOUT_COMMAND and VOUT_MAX.

Signed-off-by: Ugur Usug <ugur.usug@...imintegrated.com>
---
 Documentation/hwmon/max20730.rst |  10 +-
 drivers/hwmon/pmbus/Kconfig      |   4 +-
 drivers/hwmon/pmbus/max20730.c   | 412 ++++++++++++++++++++++++++++++++++++++-
 3 files changed, 414 insertions(+), 12 deletions(-)
 mode change 100644 => 100755 drivers/hwmon/pmbus/max20730.c

diff --git a/Documentation/hwmon/max20730.rst b/Documentation/hwmon/max20730.rst
index cea7ae5..cb0c95b 100644
--- a/Documentation/hwmon/max20730.rst
+++ b/Documentation/hwmon/max20730.rst
@@ -5,6 +5,14 @@ Kernel driver max20730
 
 Supported chips:
 
+  * Maxim MAX20710
+
+    Prefix: 'max20710'
+
+    Addresses scanned: -
+
+    Datasheet: https://datasheets.maximintegrated.com/en/ds/MAX20710.pdf
+
   * Maxim MAX20730
 
     Prefix: 'max20730'
@@ -35,7 +43,7 @@ Author: Guenter Roeck <linux@...ck-us.net>
 Description
 -----------
 
-This driver implements support for Maxim MAX20730, MAX20734, and MAX20743
+This driver implements support for Maxim MAX20710, MAX20730, MAX20734, and MAX20743
 Integrated, Step-Down Switching Regulators with PMBus support.
 
 The driver is a client driver to the core PMBus driver.
diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig
index de12a56..cac96e0 100644
--- a/drivers/hwmon/pmbus/Kconfig
+++ b/drivers/hwmon/pmbus/Kconfig
@@ -147,10 +147,10 @@ config SENSORS_MAX16064
 	  be called max16064.
 
 config SENSORS_MAX20730
-	tristate "Maxim MAX20730, MAX20734, MAX20743"
+	tristate "Maxim MAX20710, MAX20730, MAX20734, MAX20743"
 	help
 	  If you say yes here you get hardware monitoring support for Maxim
-	  MAX20730, MAX20734, and MAX20743.
+	  MAX20710, MAX20730, MAX20734, and MAX20743.
 
 	  This driver can also be built as a module. If so, the module will
 	  be called max20730.
diff --git a/drivers/hwmon/pmbus/max20730.c b/drivers/hwmon/pmbus/max20730.c
old mode 100644
new mode 100755
index c0bb054..fc38be0
--- a/drivers/hwmon/pmbus/max20730.c
+++ b/drivers/hwmon/pmbus/max20730.c
@@ -1,12 +1,14 @@
 // SPDX-License-Identifier: GPL-2.0-or-later
 /*
- * Driver for MAX20730, MAX20734, and MAX20743 Integrated, Step-Down
- * Switching Regulators
+ * Driver for MAX20710, MAX20730, MAX20734, and MAX20743 Integrated, 
+ * Step-Down Switching Regulators
  *
  * Copyright 2019 Google LLC.
+ * Copyright 2020 Maxim Integrated
  */
 
 #include <linux/bits.h>
+#include <linux/debugfs.h>
 #include <linux/err.h>
 #include <linux/i2c.h>
 #include <linux/init.h>
@@ -19,21 +21,283 @@
 #include "pmbus.h"
 
 enum chips {
+	max20710,
 	max20730,
 	max20734,
 	max20743
 };
 
+enum {
+	MAX20730_DEBUGFS_VOUT_MIN = 0,
+	MAX20730_DEBUGFS_FREQUENCY,
+	MAX20730_DEBUGFS_PG_DELAY,
+	MAX20730_DEBUGFS_INTERNAL_GAIN,
+	MAX20730_DEBUGFS_BOOT_VOLTAGE,
+	MAX20730_DEBUGFS_OUT_V_RAMP_RATE,
+	MAX20730_DEBUGFS_OC_PROTECT_MODE,
+	MAX20730_DEBUGFS_SS_TIMING,
+	MAX20730_DEBUGFS_IMAX,
+	MAX20730_DEBUGFS_OPERATION,
+	MAX20730_DEBUGFS_ON_OFF_CONFIG,
+	MAX20730_DEBUGFS_SMBALERT_MASK,
+	MAX20730_DEBUGFS_VOUT_MODE,
+	MAX20730_DEBUGFS_VOUT_COMMAND,
+	MAX20730_DEBUGFS_VOUT_MAX,
+	MAX20730_DEBUGFS_NUM_ENTRIES
+};
+
 struct max20730_data {
 	enum chips id;
 	struct pmbus_driver_info info;
 	struct mutex lock;	/* Used to protect against parallel writes */
 	u16 mfr_devset1;
+	u16 mfr_devset2;
+	u16 mfr_voutmin;
 };
 
 #define to_max20730_data(x)  container_of(x, struct max20730_data, info)
 
+#define PMBUS_SMB_ALERT_MASK	0x1B
+
+#define MAX20730_MFR_VOUT_MIN	0xd1
 #define MAX20730_MFR_DEVSET1	0xd2
+#define MAX20730_MFR_DEVSET2	0xd3
+
+#define MAX20730_MFR_VOUT_MIN_MASK			GENMASK(9, 0)
+#define MAX20730_MFR_VOUT_MIN_BIT_POS		0
+
+#define MAX20730_MFR_DEVSET1_RGAIN_MASK		(BIT(13) | BIT(14))
+#define MAX20730_MFR_DEVSET1_OTP_MASK		(BIT(11) | BIT(12))
+#define MAX20730_MFR_DEVSET1_VBOOT_MASK		(BIT(8) | BIT(9))
+#define MAX20730_MFR_DEVSET1_OCP_MASK		(BIT(5) | BIT(6))
+#define MAX20730_MFR_DEVSET1_FSW_MASK		GENMASK(4, 2)
+#define MAX20730_MFR_DEVSET1_TSTAT_MASK		(BIT(0) | BIT(1))
+
+#define MAX20730_MFR_DEVSET1_RGAIN_BIT_POS	13
+#define MAX20730_MFR_DEVSET1_OTP_BIT_POS	11
+#define MAX20730_MFR_DEVSET1_VBOOT_BIT_POS	8
+#define MAX20730_MFR_DEVSET1_OCP_BIT_POS	5
+#define MAX20730_MFR_DEVSET1_FSW_BIT_POS	2
+#define MAX20730_MFR_DEVSET1_TSTAT_BIT_POS	0
+
+#define MAX20730_MFR_DEVSET2_IMAX_MASK		GENMASK(10, 8)
+#define MAX20730_MFR_DEVSET2_VRATE			(BIT(6) | BIT(7))
+#define MAX20730_MFR_DEVSET2_OCPM_MASK		BIT(5)
+#define MAX20730_MFR_DEVSET2_SS_MASK		(BIT(0) | BIT(1))
+
+#define MAX20730_MFR_DEVSET2_IMAX_BIT_POS	8
+#define MAX20730_MFR_DEVSET2_VRATE_BIT_POS	6
+#define MAX20730_MFR_DEVSET2_OCPM_BIT_POS	5
+#define MAX20730_MFR_DEVSET2_SS_BIT_POS		0
+
+#define DEBUG_FS_DATA_MAX					8
+
+struct max20730_debugfs_data {
+	struct i2c_client *client;
+	int debugfs_entries[MAX20730_DEBUGFS_NUM_ENTRIES];
+};
+
+#define to_psu(x, y) container_of((x), \
+			struct max20730_debugfs_data, debugfs_entries[(y)])
+
+static ssize_t max20730_debugfs_read(struct file *file, char __user *buf,
+				      size_t count, loff_t *ppos)
+{
+	int ret, len;
+	int *idxp = file->private_data;
+	int idx = *idxp;
+	struct max20730_debugfs_data *psu = to_psu(idxp, idx);
+	const struct pmbus_driver_info *info;
+	const struct max20730_data *data;
+	char tbuf[DEBUG_FS_DATA_MAX + 2] = { 0 };
+	u16 val;
+
+	info = pmbus_get_driver_info(psu->client);
+	data = to_max20730_data(info);
+
+	switch (idx) {
+	case MAX20730_DEBUGFS_VOUT_MIN:
+		len = snprintf(tbuf, 5, "%d", data->mfr_voutmin);
+		break;
+	case MAX20730_DEBUGFS_FREQUENCY:
+		val = (data->mfr_devset1 & MAX20730_MFR_DEVSET1_FSW_MASK)
+			>> MAX20730_MFR_DEVSET1_FSW_BIT_POS;
+		if (val == 0)
+			ret = 400;
+		else if (val == 1)
+			ret = 500;
+		else if (val == 2 || val == 3)
+			ret = 600;
+		else if (val == 4)
+			ret = 700;
+		else if (val == 5)
+			ret = 800;
+		else
+			ret = 900;
+		len = snprintf(tbuf, 4, "%d", ret);
+		break;
+	case MAX20730_DEBUGFS_PG_DELAY:
+		val = (data->mfr_devset1 & MAX20730_MFR_DEVSET1_TSTAT_MASK)
+			>> MAX20730_MFR_DEVSET1_TSTAT_BIT_POS;
+
+		if (val == 0)
+			strcpy(tbuf, "2000");
+		else if (val == 1)
+			strcpy(tbuf, "125");
+		else if (val == 2)
+			strcpy(tbuf, "62.5");
+		else
+			strcpy(tbuf, "32");
+		len = strnlen(tbuf, DEBUG_FS_DATA_MAX);
+		break;
+
+	case MAX20730_DEBUGFS_INTERNAL_GAIN:
+		val = (data->mfr_devset1 & MAX20730_MFR_DEVSET1_RGAIN_MASK)
+			>> MAX20730_MFR_DEVSET1_RGAIN_BIT_POS;
+
+		if (data->id == max20734) {
+			/* AN6209 */
+			if (val == 0)
+				strcpy(tbuf, "0.8");
+			else if (val == 1)
+				strcpy(tbuf, "3.2");
+			else if (val == 2)
+				strcpy(tbuf, "1.6");
+			else
+				strcpy(tbuf, "6.4");
+		} else if (data->id == max20730 || data->id == max20710) {
+			/* AN6042 or AN6140 */
+			if (val == 0)
+				strcpy(tbuf, "0.9");
+			else if (val == 1)
+				strcpy(tbuf, "3.6");
+			else if (val == 2)
+				strcpy(tbuf, "1.8");
+			else
+				strcpy(tbuf, "7.2");
+		} else if (data->id == max20743) {
+			/* AN6042 */
+			if (val == 0)
+				strcpy(tbuf, "0.45");
+			else if (val == 1)
+				strcpy(tbuf, "1.8");
+			else if (val == 2)
+				strcpy(tbuf, "0.9");
+			else
+				strcpy(tbuf, "3.6");
+		} else
+			return -EINVAL;
+
+		len = strnlen(tbuf, DEBUG_FS_DATA_MAX);
+		break;
+	case MAX20730_DEBUGFS_BOOT_VOLTAGE:
+		val = (data->mfr_devset1 & MAX20730_MFR_DEVSET1_VBOOT_MASK)
+			>> MAX20730_MFR_DEVSET1_VBOOT_BIT_POS;
+
+		if (val == 0)
+			strcpy(tbuf, "0.6484");
+		else if (val == 1)
+			strcpy(tbuf, "0.8984");
+		else if (val == 2)
+			strcpy(tbuf, "1.0");
+		else
+			return -EINVAL;
+
+		len = strnlen(tbuf, DEBUG_FS_DATA_MAX);
+		break;
+	case MAX20730_DEBUGFS_OUT_V_RAMP_RATE:
+		val = (data->mfr_devset2 & MAX20730_MFR_DEVSET2_VRATE)
+			>> MAX20730_MFR_DEVSET2_VRATE_BIT_POS;
+
+		if (val == 0)
+			ret = 4;
+		else if (val == 1)
+			ret = 2;
+		else if (val == 2)
+			ret = 1;
+		else
+			return -EINVAL;
+
+		len = snprintf(tbuf, 2, "%d", ret);
+		break;
+	case MAX20730_DEBUGFS_OC_PROTECT_MODE:
+		ret = (data->mfr_devset2 & MAX20730_MFR_DEVSET2_OCPM_MASK)
+			>> MAX20730_MFR_DEVSET2_OCPM_BIT_POS;
+		len = snprintf(tbuf, 2, "%d", ret);
+		break;
+	case MAX20730_DEBUGFS_SS_TIMING:
+		val = (data->mfr_devset2 & MAX20730_MFR_DEVSET2_SS_MASK)
+			>> MAX20730_MFR_DEVSET2_SS_BIT_POS;
+
+		if (val == 0)
+			strcpy(tbuf, "0.75");
+		else if (val == 1)
+			strcpy(tbuf, "1.5");
+		else if (val == 2)
+			strcpy(tbuf, "3");
+		else
+			strcpy(tbuf, "6");
+
+		len = strnlen(tbuf, DEBUG_FS_DATA_MAX);
+		break;
+	case MAX20730_DEBUGFS_IMAX:
+		ret = (data->mfr_devset2 & MAX20730_MFR_DEVSET2_IMAX_MASK)
+			>> MAX20730_MFR_DEVSET2_IMAX_BIT_POS;
+		len = snprintf(tbuf, 2, "%d", ret);
+		break;
+	case MAX20730_DEBUGFS_OPERATION:
+		ret = i2c_smbus_read_byte_data(psu->client, PMBUS_OPERATION);
+		if(ret < 0)
+			return ret;
+		len = snprintf(tbuf, 2, "%d", ret);
+		break;
+	case MAX20730_DEBUGFS_ON_OFF_CONFIG:
+		ret = i2c_smbus_read_byte_data(psu->client, PMBUS_ON_OFF_CONFIG);
+		if(ret < 0)
+			return ret;
+		len = snprintf(tbuf, 2, "%d", ret);
+		break;
+	case MAX20730_DEBUGFS_SMBALERT_MASK:
+		ret = i2c_smbus_read_word_data(psu->client, 
+							PMBUS_SMB_ALERT_MASK);
+		if(ret < 0)
+			return ret;
+		len = snprintf(tbuf, 3, "%d", ret);
+		break;
+	case MAX20730_DEBUGFS_VOUT_MODE:
+		ret = i2c_smbus_read_byte_data(psu->client, PMBUS_VOUT_MODE);
+		if(ret < 0)
+			return ret;
+		len = snprintf(tbuf, 2, "%d", ret);
+		break;
+	case MAX20730_DEBUGFS_VOUT_COMMAND:
+		ret = i2c_smbus_read_word_data(psu->client, PMBUS_VOUT_COMMAND);
+		if(ret < 0)
+			return ret;
+		len = snprintf(tbuf, 3, "%d", ret);
+		break;
+	case MAX20730_DEBUGFS_VOUT_MAX:
+		ret = i2c_smbus_read_word_data(psu->client, PMBUS_VOUT_MAX);
+		if(ret < 0)
+			return ret;
+		len = snprintf(tbuf, 3, "%d", ret);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	tbuf[len] = '\n';
+	len += 2;
+
+	return simple_read_from_buffer(buf, count, ppos, tbuf, len);
+}
+
+static const struct file_operations max20730_fops = {
+	.llseek = noop_llseek,
+	.read = max20730_debugfs_read,
+	.write = NULL,
+	.open = simple_open,
+};
 
 /*
  * Convert discreet value to direct data format. Strictly speaking, all passed
@@ -80,6 +344,7 @@ static long direct_to_val(u16 w, enum pmbus_sensor_classes class,
 }
 
 static u32 max_current[][5] = {
+	[max20710] = { 6200, 8000, 9700, 11600 },
 	[max20730] = { 13000, 16600, 20100, 23600 },
 	[max20734] = { 21000, 27000, 32000, 38000 },
 	[max20743] = { 18900, 24100, 29200, 34100 },
@@ -164,6 +429,45 @@ static int max20730_write_word_data(struct i2c_client *client, int page,
 }
 
 static const struct pmbus_driver_info max20730_info[] = {
+	[max20710] = {
+		.pages = 1,
+		.read_word_data = max20730_read_word_data,
+		.write_word_data = max20730_write_word_data,
+
+		/* Source : Maxim AN6140 and AN6042 */
+		.format[PSC_TEMPERATURE] = direct,
+		.m[PSC_TEMPERATURE] = 21,
+		.b[PSC_TEMPERATURE] = 5887,
+		.R[PSC_TEMPERATURE] = -1,
+
+		.format[PSC_VOLTAGE_IN] = direct,
+		.m[PSC_VOLTAGE_IN] = 3609,
+		.b[PSC_VOLTAGE_IN] = 0,
+		.R[PSC_VOLTAGE_IN] = -2,
+
+		/*
+		 * Values in the datasheet are adjusted for temperature and
+		 * for the relationship between Vin and Vout.
+		 * Unfortunately, the data sheet suggests that Vout measurement
+		 * may be scaled with a resistor array. This is indeed the case
+		 * at least on the evaulation boards. As a result, any in-driver
+		 * adjustments would either be wrong or require elaborate means
+		 * to configure the scaling. Instead of doing that, just report
+		 * raw values and let userspace handle adjustments.
+		 */
+		.format[PSC_CURRENT_OUT] = direct,
+		.m[PSC_CURRENT_OUT] = 153,
+		.b[PSC_CURRENT_OUT] = 4976,
+		.R[PSC_CURRENT_OUT] = -1,
+
+		.format[PSC_VOLTAGE_OUT] = linear,
+
+		.func[0] = PMBUS_HAVE_VIN |
+			PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
+			PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT |
+			PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP |
+			PMBUS_HAVE_STATUS_INPUT,
+	},
 	[max20730] = {
 		.pages = 1,
 		.read_word_data = max20730_read_word_data,
@@ -200,7 +504,8 @@ static const struct pmbus_driver_info max20730_info[] = {
 		.func[0] = PMBUS_HAVE_VIN |
 			PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
 			PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT |
-			PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
+			PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP |
+			PMBUS_HAVE_STATUS_INPUT,
 	},
 	[max20734] = {
 		.pages = 1,
@@ -228,7 +533,8 @@ static const struct pmbus_driver_info max20730_info[] = {
 		.func[0] = PMBUS_HAVE_VIN |
 			PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
 			PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT |
-			PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
+			PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP |
+			PMBUS_HAVE_STATUS_INPUT,
 	},
 	[max20743] = {
 		.pages = 1,
@@ -256,7 +562,8 @@ static const struct pmbus_driver_info max20730_info[] = {
 		.func[0] = PMBUS_HAVE_VIN |
 			PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT |
 			PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT |
-			PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
+			PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP |
+			PMBUS_HAVE_STATUS_INPUT,
 	},
 };
 
@@ -267,14 +574,17 @@ static int max20730_probe(struct i2c_client *client,
 	u8 buf[I2C_SMBUS_BLOCK_MAX + 1];
 	struct max20730_data *data;
 	enum chips chip_id;
-	int ret;
+	int i, ret;
+	struct dentry *debugfs;
+	struct dentry *max20730_dir;
+	struct max20730_debugfs_data *psu;
 
 	if (!i2c_check_functionality(client->adapter,
 				     I2C_FUNC_SMBUS_READ_BYTE_DATA |
 				     I2C_FUNC_SMBUS_READ_WORD_DATA |
 				     I2C_FUNC_SMBUS_BLOCK_DATA))
 		return -ENODEV;
-
+	
 	ret = i2c_smbus_read_block_data(client, PMBUS_MFR_ID, buf);
 	if (ret < 0) {
 		dev_err(&client->dev, "Failed to read Manufacturer ID\n");
@@ -335,10 +645,93 @@ static int max20730_probe(struct i2c_client *client,
 		return ret;
 	data->mfr_devset1 = ret;
 
-	return pmbus_do_probe(client, id, &data->info);
+	ret = pmbus_do_probe(client, id, &data->info);
+	if (ret < 0)
+		return ret;
+
+#if IS_ENABLED(CONFIG_DEBUG_FS)
+	ret = i2c_smbus_read_word_data(client, MAX20730_MFR_DEVSET2);
+	if (ret < 0)
+		return ret;
+	data->mfr_devset2 = ret;
+
+	ret = i2c_smbus_read_word_data(client, MAX20730_MFR_VOUT_MIN);
+	if (ret < 0)
+		return ret;
+	data->mfr_voutmin = ret;
+
+	/*
+	 * Don't fail the probe if there isn't enough memory for debugfs.
+	 */
+	psu = devm_kzalloc(&client->dev, sizeof(*psu), GFP_KERNEL);
+	if (!psu)
+		return 0;
+	psu->client = client;
+
+	/* Don't fail the probe if we can't create debugfs */
+	debugfs = pmbus_get_debugfs_dir(client);
+	if (!debugfs)
+		return 0;
+
+	max20730_dir = debugfs_create_dir(client->name, debugfs);
+	if (!max20730_dir)
+		return 0;
+
+	for (i = 0; i < MAX20730_DEBUGFS_NUM_ENTRIES; ++i)
+		psu->debugfs_entries[i] = i;
+
+	debugfs_create_file("vout_min", 0444, max20730_dir,
+			    &psu->debugfs_entries[MAX20730_DEBUGFS_VOUT_MIN],
+			    &max20730_fops);
+	debugfs_create_file("frequency", 0444, max20730_dir,
+			    &psu->debugfs_entries[MAX20730_DEBUGFS_FREQUENCY],
+			    &max20730_fops);
+	debugfs_create_file("power_good_delay", 0444, max20730_dir,
+			    &psu->debugfs_entries[MAX20730_DEBUGFS_PG_DELAY],
+			    &max20730_fops);
+	debugfs_create_file("internal_gain", 0444, max20730_dir,
+			    &psu->debugfs_entries[MAX20730_DEBUGFS_INTERNAL_GAIN],
+			    &max20730_fops);
+	debugfs_create_file("boot_voltage", 0444, max20730_dir,
+			    &psu->debugfs_entries[MAX20730_DEBUGFS_BOOT_VOLTAGE],
+			    &max20730_fops);
+	debugfs_create_file("out_voltage_ramp_rate", 0444, max20730_dir,
+			    &psu->debugfs_entries[MAX20730_DEBUGFS_OUT_V_RAMP_RATE],
+			    &max20730_fops);
+	debugfs_create_file("oc_protection_mode", 0444, max20730_dir,
+			    &psu->debugfs_entries[MAX20730_DEBUGFS_OC_PROTECT_MODE],
+			    &max20730_fops);
+	debugfs_create_file("soft_start_timing", 0444, max20730_dir,
+			    &psu->debugfs_entries[MAX20730_DEBUGFS_SS_TIMING],
+			    &max20730_fops);
+	debugfs_create_file("imax", 0444, max20730_dir,
+			    &psu->debugfs_entries[MAX20730_DEBUGFS_IMAX],
+			    &max20730_fops);	    
+	debugfs_create_file("operation", 0444, max20730_dir,
+			    &psu->debugfs_entries[MAX20730_DEBUGFS_OPERATION],
+			    &max20730_fops);
+	debugfs_create_file("on_off_config", 0444, max20730_dir,
+			    &psu->debugfs_entries[MAX20730_DEBUGFS_ON_OFF_CONFIG],
+			    &max20730_fops);
+	debugfs_create_file("smbalert_mask", 0444, max20730_dir,
+			    &psu->debugfs_entries[MAX20730_DEBUGFS_SMBALERT_MASK],
+			    &max20730_fops);
+	debugfs_create_file("vout_mode", 0444, max20730_dir,
+			    &psu->debugfs_entries[MAX20730_DEBUGFS_VOUT_MODE],
+			    &max20730_fops);
+	debugfs_create_file("vout_command", 0444, max20730_dir,
+			    &psu->debugfs_entries[MAX20730_DEBUGFS_VOUT_COMMAND],
+			    &max20730_fops);
+	debugfs_create_file("vout_max", 0444, max20730_dir,
+			    &psu->debugfs_entries[MAX20730_DEBUGFS_VOUT_MAX],
+			    &max20730_fops);
+#endif
+	
+	return 0;
 }
 
 static const struct i2c_device_id max20730_id[] = {
+	{ "max20710", max20710 },
 	{ "max20730", max20730 },
 	{ "max20734", max20734 },
 	{ "max20743", max20743 },
@@ -348,6 +741,7 @@ static const struct i2c_device_id max20730_id[] = {
 MODULE_DEVICE_TABLE(i2c, max20730_id);
 
 static const struct of_device_id max20730_of_match[] = {
+	{ .compatible = "maxim,max20710", .data = (void *)max20710 },
 	{ .compatible = "maxim,max20730", .data = (void *)max20730 },
 	{ .compatible = "maxim,max20734", .data = (void *)max20734 },
 	{ .compatible = "maxim,max20743", .data = (void *)max20743 },
@@ -369,5 +763,5 @@ static struct i2c_driver max20730_driver = {
 module_i2c_driver(max20730_driver);
 
 MODULE_AUTHOR("Guenter Roeck <linux@...ck-us.net>");
-MODULE_DESCRIPTION("PMBus driver for Maxim MAX20730 / MAX20734 / MAX20743");
+MODULE_DESCRIPTION("PMBus driver for Maxim MAX20710 / MAX20730 / MAX20734 / MAX20743");
 MODULE_LICENSE("GPL");
-- 
2.7.4

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