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* [PATCH 1/2] hwmon (pmbus/max20730): add max20710 support
@ 2020-06-15 23:49 Ugur Usug
  2020-06-16  2:43 ` Guenter Roeck
  0 siblings, 1 reply; 2+ messages in thread
From: Ugur Usug @ 2020-06-15 23:49 UTC (permalink / raw)
  To: Guenter Roeck; +Cc: linux-hwmon, linux-hwmon

add support for max20710 into the existing max20730 driver.

Signed-off-by: Ugur Usug <ugur.usug@maximintegrated.com>
---
 Documentation/hwmon/max20730.rst | 10 ++++++-
 drivers/hwmon/pmbus/Kconfig      |  4 +--
 drivers/hwmon/pmbus/max20730.c   | 57 ++++++++++++++++++++++++++++++++++------
 3 files changed, 60 insertions(+), 11 deletions(-)

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@roeck-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 a337195..3ad97fd 100644
--- a/drivers/hwmon/pmbus/Kconfig
+++ b/drivers/hwmon/pmbus/Kconfig
@@ -156,10 +156,10 @@ config SENSORS_MAX16601
 	  be called max16601.
 
 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
index c0bb054..3ddc19b 100644
--- a/drivers/hwmon/pmbus/max20730.c
+++ b/drivers/hwmon/pmbus/max20730.c
@@ -1,9 +1,10 @@
 // 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>
@@ -19,6 +20,7 @@
 #include "pmbus.h"
 
 enum chips {
+	max20710,
 	max20730,
 	max20734,
 	max20743
@@ -80,6 +82,7 @@ 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 +167,35 @@ 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,
+
+		.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 +232,8 @@ 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 +261,8 @@ 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 +290,8 @@ 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,
 	},
 };
 
@@ -274,7 +309,7 @@ static int max20730_probe(struct i2c_client *client,
 				     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 +370,15 @@ 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;
+	
+	return 0;
 }
 
 static const struct i2c_device_id max20730_id[] = {
+	{ "max20710", max20710 },
 	{ "max20730", max20730 },
 	{ "max20734", max20734 },
 	{ "max20743", max20743 },
@@ -348,6 +388,7 @@ 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 +410,5 @@ static struct i2c_driver max20730_driver = {
 module_i2c_driver(max20730_driver);
 
 MODULE_AUTHOR("Guenter Roeck <linux@roeck-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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2020-06-15 23:49 [PATCH 1/2] hwmon (pmbus/max20730): add max20710 support Ugur Usug
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