Support pli1209bc Digital Supervisor

PATCH Superseded Marcello Sylvester Bauer 2 participants 7 messages Feb 14, 2022 – Feb 21, 2022

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Device tree bindings Documentation Hardware monitoring

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Marcello Sylvester Bauer

author

2022-02-14 21:45 UTC #1 lore raw

PATCH v3 1/4 dt-bindings: vendor-prefixes: add Vicor Corporation

In reply to Marcello Sylvester Bauer

Add vendor prefix for Vicor Corporation.

Signed-off-by Marcello Sylvester Bauer <[email protected]>

---
 Documentation/devicetree/bindings/vendor-prefixes.yaml | 2 ++
 1 file changed, 2 insertions(+)

Documentation/devicetree/bindings/vendor-prefixes.yaml +2 -0

index 294093d45a23..047a83a089ce 100644
@@ -1298,6 +1298,8 @@ patternProperties:
     description: Vertexcom Technologies, Inc.
   "^via,.*":
     description: VIA Technologies, Inc.
+  "^vicor,.*":
+    description: Vicor Corporation
   "^videostrong,.*":
     description: Videostrong Technology Co., Ltd.
   "^virtio,.*":

Signature · 1 line

2.34.1

Marcello Sylvester Bauer

author

2022-02-14 21:45 UTC #0 lore raw

v3 cover Support pli1209bc Digital Supervisor

Hi,

This patch set adds support for PLI1209BC Digital Supervisor from Vicor Corporation. It replaces the previous submitted driver "bcm6123" [1], since there are multiple digital supervisors, which uses BCMs in different configurations [2].

Change in v3:
- prevent potential over- or underflow of PMBUS_READ_POUT

Changes in v2:
- Multiply PMBUS_READ_POUT with 10 (R=1)
instead of dividing PMBUS_READ_PIN by 10.
- Set all pmbus formats to direct.
- Comment reason why page 0 is redundant.
- Import pmbus namespace.

[1]: https://www.spinics.net/lists/linux-hwmon/msg14097.html
[2]: https://www.spinics.net/lists/linux-hwmon/msg14123.html

Marcello Sylvester Bauer (4):
dt-bindings: vendor-prefixes: add Vicor Corporation dt-bindings:trivial-devices: Add pli1209bc
pmbus: Add support for pli1209bc
pmbus (pli1209bc): Add regulator support

 .../devicetree/bindings/trivial-devices.yaml  |   2 +
 .../devicetree/bindings/vendor-prefixes.yaml  |   2 +
 Documentation/hwmon/pli1209bc.rst             |  73 +++++++++
 drivers/hwmon/pmbus/Kconfig                   |  16 ++
 drivers/hwmon/pmbus/Makefile                  |   1 +
 drivers/hwmon/pmbus/pli1209bc.c               | 146 ++++++++++++++++++
 6 files changed, 240 insertions(+)
 create mode 100644 Documentation/hwmon/pli1209bc.rst
 create mode 100644 drivers/hwmon/pmbus/pli1209bc.c

Signature · 1 line

2.34.1

Marcello Sylvester Bauer

author

2022-02-14 21:45 UTC #2 lore raw

PATCH v3 2/4 dt-bindings:trivial-devices: Add pli1209bc

Add trivial device entry for PLI1209BC Digital Supervisor from Vicor Corporation.

Signed-off-by Marcello Sylvester Bauer <[email protected]>

---
 Documentation/devicetree/bindings/trivial-devices.yaml | 2 ++
 1 file changed, 2 insertions(+)

Documentation/devicetree/bindings/trivial-devices.yaml +2 -0

index 091792ba993e..d03d90360aa0 100644
@@ -354,6 +354,8 @@ properties:
           - ti,tps544c25
             # Winbond/Nuvoton H/W Monitor
           - winbond,w83793
+            # Vicor Corporation Digital Supervisor
+          - vicor,pli1209bc
             # i2c trusted platform module (TPM)
           - winbond,wpct301

Signature · 1 line

2.34.1

Marcello Sylvester Bauer

author

2022-02-14 21:45 UTC #6 lore raw

PATCH v3 4/4 pmbus (pli1209bc): Add regulator support

In reply to Marcello Sylvester Bauer

Add regulator support for PLI1209BC Digital Supervisor.

Signed-off-by Marcello Sylvester Bauer <[email protected]>

---
 drivers/hwmon/pmbus/Kconfig     |  7 +++++++
 drivers/hwmon/pmbus/pli1209bc.c | 31 +++++++++++++++++++++++++++++++
 2 files changed, 38 insertions(+)

drivers/hwmon/pmbus/Kconfig +7 -0

index 831db423bea0..8b8f0d8733b2 100644
@@ -319,6 +319,13 @@ config SENSORS_PLI1209BC
 	  This driver can also be built as a module. If so, the module will
 	  be called pli1209bc.
 
+config SENSORS_PLI1209BC_REGULATOR
+	bool "Regulator support for PLI1209BC"
+	depends on SENSORS_PLI1209BC && REGULATOR
+	help
+	  If you say yes here you get regulator support for Vicor PLI1209BC
+	  Digital Supervisor.
+
 config SENSORS_PM6764TR
 	tristate "ST PM6764TR"
 	help

drivers/hwmon/pmbus/pli1209bc.c +31 -0

index 5f8847307e55..05b4ee35ba27 100644
@@ -8,6 +8,7 @@
 #include <linux/i2c.h>
 #include <linux/module.h>
 #include <linux/pmbus.h>
+#include <linux/regulator/driver.h>
 #include "pmbus.h"
 
 /*

@@ -33,11 +34,37 @@ static int pli1209bc_read_word_data(struct i2c_client *client, int page,
 			return data;
 		data = sign_extend32(data, 15) * 10;
 		return clamp_val(data, -32768, 32767) & 0xffff;
+	/*
+	 * PMBUS_READ_VOUT and PMBUS_READ_TEMPERATURE_1 return invalid data
+	 * when the BCM is turned off. Since it is not possible to return
+	 * ENODATA error, return zero instead.
+	 */
+	case PMBUS_READ_VOUT:
+	case PMBUS_READ_TEMPERATURE_1:
+		data = pmbus_read_word_data(client, page, phase,
+					    PMBUS_STATUS_WORD);
+		if (data < 0)
+			return data;
+		if (data & PB_STATUS_POWER_GOOD_N)
+			return 0;
+		return pmbus_read_word_data(client, page, phase, reg);
 	default:
 		return -ENODATA;
 	}
 }
 
+#if IS_ENABLED(CONFIG_SENSORS_PLI1209BC_REGULATOR)
+static const struct regulator_desc pli1209bc_reg_desc = {
+	.name = "vout2",
+	.id = 1,
+	.of_match = of_match_ptr("vout2"),
+	.regulators_node = of_match_ptr("regulators"),
+	.ops = &pmbus_regulator_ops,
+	.type = REGULATOR_VOLTAGE,
+	.owner = THIS_MODULE,
+};
+#endif
+
 static struct pmbus_driver_info pli1209bc_info = {
 	.pages = 2,
 	.format[PSC_VOLTAGE_IN] = direct,

@@ -75,6 +102,10 @@ static struct pmbus_driver_info pli1209bc_info = {
 	    | PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP
 	    | PMBUS_HAVE_STATUS_IOUT | PMBUS_HAVE_STATUS_INPUT,
 	.read_word_data = pli1209bc_read_word_data,
+#if IS_ENABLED(CONFIG_SENSORS_PLI1209BC_REGULATOR)
+	.num_regulators = 1,
+	.reg_desc = &pli1209bc_reg_desc,
+#endif
 };
 
 static int pli1209bc_probe(struct i2c_client *client)

Signature · 1 line

2.34.1

Marcello Sylvester Bauer

author

2022-02-14 21:45 UTC #3 lore raw

PATCH v3 3/4 pmbus: Add support for pli1209bc

In reply to Marcello Sylvester Bauer

PLI1209BC is a Digital Supervisor from Vicor Corporation.

Signed-off-by Marcello Sylvester Bauer <[email protected]>

---
 Documentation/hwmon/pli1209bc.rst |  73 +++++++++++++++++++
 drivers/hwmon/pmbus/Kconfig       |   9 +++
 drivers/hwmon/pmbus/Makefile      |   1 +
 drivers/hwmon/pmbus/pli1209bc.c   | 115 ++++++++++++++++++++++++++++++
 4 files changed, 198 insertions(+)
 create mode 100644 Documentation/hwmon/pli1209bc.rst
 create mode 100644 drivers/hwmon/pmbus/pli1209bc.c

Documentation/hwmon/pli1209bc.rst new file +73 -0

new file mode 100644
index 000000000000..a3f686d03cf2
@@ -0,0 +1,73 @@
+Kernel driver pli1209bc
+=======================
+
+Supported chips:
+
+  * Digital Supervisor PLI1209BC
+
+    Prefix: 'pli1209bc'
+
+    Addresses scanned: 0x50 - 0x5F
+
+    Datasheet: https://www.vicorpower.com/documents/datasheets/ds-PLI1209BCxyzz-VICOR.pdf
+
+Authors:
+    - Marcello Sylvester Bauer <[email protected]>
+
+Description
+-----------
+
+The Vicor PLI1209BC is an isolated digital power system supervisor thatprovides
+a communication interface between a host processor and one Bus Converter Module
+(BCM). The PLI communicates with a system controller via a PMBus compatible
+interface over an isolated UART interface. Through the PLI, the host processor
+can configure, set protection limits, and monitor the BCM.
+
+Sysfs entries
+-------------
+
+======================= ========================================================
+in1_label		"vin2"
+in1_input		Input voltage.
+in1_rated_min		Minimum rated input voltage.
+in1_rated_max		Maximum rated input voltage.
+in1_max			Maximum input voltage.
+in1_max_alarm		Input voltage high alarm.
+in1_crit		Critical input voltage.
+in1_crit_alarm		Input voltage critical alarm.
+
+in2_label		"vout2"
+in2_input		Output voltage.
+in2_rated_min		Minimum rated output voltage.
+in2_rated_max		Maximum rated output voltage.
+in2_alarm		Output voltage alarm
+
+curr1_label		"iin2"
+curr1_input		Input current.
+curr1_max		Maximum input current.
+curr1_max_alarm		Maximum input current high alarm.
+curr1_crit		Critical input current.
+curr1_crit_alarm	Input current critical alarm.
+
+curr2_label		"iout2"
+curr2_input		Output current.
+curr2_crit		Critical output current.
+curr2_crit_alarm	Output current critical alarm.
+curr2_max		Maximum output current.
+curr2_max_alarm		Output current high alarm.
+
+power1_label		"pin2"
+power1_input		Input power.
+power1_alarm		Input power alarm.
+
+power2_label		"pout2"
+power2_input		Output power.
+power2_rated_max	Maximum rated output power.
+
+temp1_input		Die temperature.
+temp1_alarm		Die temperature alarm.
+temp1_max		Maximum die temperature.
+temp1_max_alarm		Die temperature high alarm.
+temp1_crit		Critical die temperature.
+temp1_crit_alarm	Die temperature critical alarm.
+======================= ========================================================

drivers/hwmon/pmbus/Kconfig +9 -0

index c96f7b7338bd..831db423bea0 100644
@@ -310,6 +310,15 @@ config SENSORS_PIM4328
 	  This driver can also be built as a module. If so, the module will
 	  be called pim4328.
 
+config SENSORS_PLI1209BC
+	tristate "Vicor PLI1209BC"
+	help
+	  If you say yes here you get hardware monitoring support for Vicor
+	  PLI1209BC Digital Supervisor.
+
+	  This driver can also be built as a module. If so, the module will
+	  be called pli1209bc.
+
 config SENSORS_PM6764TR
 	tristate "ST PM6764TR"
 	help

drivers/hwmon/pmbus/Makefile +1 -0

index e5935f70c9e0..7ce74e3b8552 100644
@@ -34,6 +34,7 @@ obj-$(CONFIG_SENSORS_MP2888)	+= mp2888.o
 obj-$(CONFIG_SENSORS_MP2975)	+= mp2975.o
 obj-$(CONFIG_SENSORS_MP5023)	+= mp5023.o
 obj-$(CONFIG_SENSORS_PM6764TR)	+= pm6764tr.o
+obj-$(CONFIG_SENSORS_PLI1209BC)	+= pli1209bc.o
 obj-$(CONFIG_SENSORS_PXE1610)	+= pxe1610.o
 obj-$(CONFIG_SENSORS_Q54SJ108A2)	+= q54sj108a2.o
 obj-$(CONFIG_SENSORS_STPDDC60)	+= stpddc60.o

drivers/hwmon/pmbus/pli1209bc.c new file +115 -0

115 lines not on this page · raw message

Signature · 1 line

2.34.1

Guenter Roeck

maintainer

2022-02-19 14:41 UTC #4 lore raw

Re: [PATCH v3 3/4] pmbus: Add support for pli1209bc

Quoted 3 lines · Marcello Sylvester Bauer

PLI1209BC is a Digital Supervisor from Vicor Corporation.
Signed-off-by Marcello Sylvester Bauer <[email protected]>

checkpatch says:

WARNING: Missing or malformed SPDX-License-Identifier tag in line 1 #82: FILE: Documentation/hwmon/pli1209bc.rst:1:
+Kernel driver pli1209bc

I can not accept the patch without license identifier.

Quoted 2 lines

---
 Documentation/hwmon/pli1209bc.rst |  73 +++++++++++++++++++

This needs to be added to Documentation/hwmon/index.rst.

Quoted 23 lines

 drivers/hwmon/pmbus/Kconfig       |   9 +++
 drivers/hwmon/pmbus/Makefile      |   1 +
 drivers/hwmon/pmbus/pli1209bc.c   | 115 ++++++++++++++++++++++++++++++
 4 files changed, 198 insertions(+)
 create mode 100644 Documentation/hwmon/pli1209bc.rst
 create mode 100644 drivers/hwmon/pmbus/pli1209bc.c

Documentation/hwmon/pli1209bc.rst new file +10 -0

new file mode 100644
index 000000000000..a3f686d03cf2
@@ -0,0 +1,73 @@
+Kernel driver pli1209bc
+=======================
+
+Supported chips:
+
+  * Digital Supervisor PLI1209BC
+
+    Prefix: 'pli1209bc'
+
+    Addresses scanned: 0x50 - 0x5F

Documentation/hwmon/pli1209bc.rst line 20

Quoted 10 lines

Documentation/hwmon/pli1209bc.rst new file +10 -0

+
+    Datasheet: https://www.vicorpower.com/documents/datasheets/ds-PLI1209BCxyzz-VICOR.pdf
+
+Authors:
+    - Marcello Sylvester Bauer <[email protected]>
+
+Description
+-----------
+
+The Vicor PLI1209BC is an isolated digital power system supervisor thatprovides

that provides

Quoted 78 lines

Documentation/hwmon/pli1209bc.rst new file +53 -0

+a communication interface between a host processor and one Bus Converter Module
+(BCM). The PLI communicates with a system controller via a PMBus compatible
+interface over an isolated UART interface. Through the PLI, the host processor
+can configure, set protection limits, and monitor the BCM.
+
+Sysfs entries
+-------------
+
+======================= ========================================================
+in1_label		"vin2"
+in1_input		Input voltage.
+in1_rated_min		Minimum rated input voltage.
+in1_rated_max		Maximum rated input voltage.
+in1_max			Maximum input voltage.
+in1_max_alarm		Input voltage high alarm.
+in1_crit		Critical input voltage.
+in1_crit_alarm		Input voltage critical alarm.
+
+in2_label		"vout2"
+in2_input		Output voltage.
+in2_rated_min		Minimum rated output voltage.
+in2_rated_max		Maximum rated output voltage.
+in2_alarm		Output voltage alarm
+
+curr1_label		"iin2"
+curr1_input		Input current.
+curr1_max		Maximum input current.
+curr1_max_alarm		Maximum input current high alarm.
+curr1_crit		Critical input current.
+curr1_crit_alarm	Input current critical alarm.
+
+curr2_label		"iout2"
+curr2_input		Output current.
+curr2_crit		Critical output current.
+curr2_crit_alarm	Output current critical alarm.
+curr2_max		Maximum output current.
+curr2_max_alarm		Output current high alarm.
+
+power1_label		"pin2"
+power1_input		Input power.
+power1_alarm		Input power alarm.
+
+power2_label		"pout2"
+power2_input		Output power.
+power2_rated_max	Maximum rated output power.
+
+temp1_input		Die temperature.
+temp1_alarm		Die temperature alarm.
+temp1_max		Maximum die temperature.
+temp1_max_alarm		Die temperature high alarm.
+temp1_crit		Critical die temperature.
+temp1_crit_alarm	Die temperature critical alarm.
+======================= ========================================================

drivers/hwmon/pmbus/Kconfig +9 -0

index c96f7b7338bd..831db423bea0 100644
@@ -310,6 +310,15 @@ config SENSORS_PIM4328
 	  This driver can also be built as a module. If so, the module will
 	  be called pim4328.
 
+config SENSORS_PLI1209BC
+	tristate "Vicor PLI1209BC"
+	help
+	  If you say yes here you get hardware monitoring support for Vicor
+	  PLI1209BC Digital Supervisor.
+
+	  This driver can also be built as a module. If so, the module will
+	  be called pli1209bc.
+
 config SENSORS_PM6764TR
 	tristate "ST PM6764TR"
 	help

drivers/hwmon/pmbus/Makefile +0 -0

index e5935f70c9e0..7ce74e3b8552 100644

drivers/hwmon/pmbus/Makefile obj-$(CONFIG_SENSORS_MP2888) += mp2888.o · line 37

Quoted 4 lines

drivers/hwmon/pmbus/Makefile +1 -0

@@ -34,6 +34,7 @@ obj-$(CONFIG_SENSORS_MP2888)	+= mp2888.o
 obj-$(CONFIG_SENSORS_MP2975)	+= mp2975.o
 obj-$(CONFIG_SENSORS_MP5023)	+= mp5023.o
 obj-$(CONFIG_SENSORS_PM6764TR)	+= pm6764tr.o
+obj-$(CONFIG_SENSORS_PLI1209BC)	+= pli1209bc.o

Alphabetic order please.

Quoted 124 lines

drivers/hwmon/pmbus/Makefile +0 -0

 obj-$(CONFIG_SENSORS_PXE1610)	+= pxe1610.o
 obj-$(CONFIG_SENSORS_Q54SJ108A2)	+= q54sj108a2.o
 obj-$(CONFIG_SENSORS_STPDDC60)	+= stpddc60.o

drivers/hwmon/pmbus/pli1209bc.c new file +115 -0

new file mode 100644
index 000000000000..5f8847307e55
@@ -0,0 +1,115 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Hardware monitoring driver for Vicor PLI1209BC Digital Supervisor
+ *
+ * Copyright (c) 2022 9elements GmbH
+ */
+
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/pmbus.h>
+#include "pmbus.h"
+
+/*
+ * The capability command is only supported at page 0. Probing the device while
+ * the page register is set to 1 will falsely enable PEC support. Disable
+ * capability probing accordingly, since the PLI1209BC does not have any
+ * additional capabilities.
+ */
+static struct pmbus_platform_data pli1209bc_plat_data = {
+	.flags = PMBUS_NO_CAPABILITY,
+};
+
+static int pli1209bc_read_word_data(struct i2c_client *client, int page,
+				    int phase, int reg)
+{
+	int data;
+
+	switch (reg) {
+	/* PMBUS_READ_POUT uses a direct format with R=0 */
+	case PMBUS_READ_POUT:
+		data = pmbus_read_word_data(client, page, phase, reg);
+		if (data < 0)
+			return data;
+		data = sign_extend32(data, 15) * 10;
+		return clamp_val(data, -32768, 32767) & 0xffff;
+	default:
+		return -ENODATA;
+	}
+}
+
+static struct pmbus_driver_info pli1209bc_info = {
+	.pages = 2,
+	.format[PSC_VOLTAGE_IN] = direct,
+	.format[PSC_VOLTAGE_OUT] = direct,
+	.format[PSC_CURRENT_IN] = direct,
+	.format[PSC_CURRENT_OUT] = direct,
+	.format[PSC_POWER] = direct,
+	.format[PSC_TEMPERATURE] = direct,
+	.m[PSC_VOLTAGE_IN] = 1,
+	.b[PSC_VOLTAGE_IN] = 0,
+	.R[PSC_VOLTAGE_IN] = 1,
+	.m[PSC_VOLTAGE_OUT] = 1,
+	.b[PSC_VOLTAGE_OUT] = 0,
+	.R[PSC_VOLTAGE_OUT] = 1,
+	.m[PSC_CURRENT_IN] = 1,
+	.b[PSC_CURRENT_IN] = 0,
+	.R[PSC_CURRENT_IN] = 3,
+	.m[PSC_CURRENT_OUT] = 1,
+	.b[PSC_CURRENT_OUT] = 0,
+	.R[PSC_CURRENT_OUT] = 2,
+	.m[PSC_POWER] = 1,
+	.b[PSC_POWER] = 0,
+	.R[PSC_POWER] = 1,
+	.m[PSC_TEMPERATURE] = 1,
+	.b[PSC_TEMPERATURE] = 0,
+	.R[PSC_TEMPERATURE] = 0,
+	/*
+	 * Page 0 sums up all attributes except voltage readings.
+	 * The pli1209 digital supervisor only contains a single BCM, making
+	 * page 0 redundant.
+	 */
+	.func[1] = PMBUS_HAVE_VIN | PMBUS_HAVE_VOUT
+	    | PMBUS_HAVE_IIN | PMBUS_HAVE_IOUT
+	    | PMBUS_HAVE_PIN | PMBUS_HAVE_POUT
+	    | PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP
+	    | PMBUS_HAVE_STATUS_IOUT | PMBUS_HAVE_STATUS_INPUT,
+	.read_word_data = pli1209bc_read_word_data,
+};
+
+static int pli1209bc_probe(struct i2c_client *client)
+{
+	client->dev.platform_data = &pli1209bc_plat_data;
+	return pmbus_do_probe(client, &pli1209bc_info);
+}
+
+static const struct i2c_device_id pli1209bc_id[] = {
+	{"pli1209bc", 0},
+	{}
+};
+
+MODULE_DEVICE_TABLE(i2c, pli1209bc_id);
+
+#ifdef CONFIG_OF
+static const struct of_device_id pli1209bc_of_match[] = {
+	{ .compatible = "vicor,pli1209bc" },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, pli1209bc_of_match);
+#endif
+
+static struct i2c_driver pli1209bc_driver = {
+	.driver = {
+		   .name = "pli1209bc",
+		   .of_match_table = of_match_ptr(pli1209bc_of_match),
+		   },
+	.probe_new = pli1209bc_probe,
+	.id_table = pli1209bc_id,
+};
+
+module_i2c_driver(pli1209bc_driver);
+
+MODULE_AUTHOR("Marcello Sylvester Bauer <[email protected]>");
+MODULE_DESCRIPTION("PMBus driver for Vicor PLI1209BC");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(PMBUS);

sylv

author

2022-02-21 09:10 UTC #5 lore raw

Re: [PATCH v3 3/4] pmbus: Add support for pli1209bc

Quoted 6 lines · Guenter Roeck

Quoted 3 lines · Marcello Sylvester Bauer
PLI1209BC is a Digital Supervisor from Vicor Corporation.
Signed-off-by Marcello Sylvester Bauer <[email protected]>

Quoted 7 lines

checkpatch says:
WARNING: Missing or malformed SPDX-License-Identifier tag in line 1 #82: FILE: Documentation/hwmon/pli1209bc.rst:1:
+Kernel driver pli1209bc
I can not accept the patch without license identifier.

oh, sure. I thought it is still optional for documentation entries.

Quoted 37 lines

Quoted 3 lines
---
Documentation/hwmon/pli1209bc.rst | 73 +++++++++++++++++++
This needs to be added to Documentation/hwmon/index.rst.
Quoted 31 lines
drivers/hwmon/pmbus/Kconfig       |   9 +++
drivers/hwmon/pmbus/Makefile      |   1 +
drivers/hwmon/pmbus/pli1209bc.c   | 115
++++++++++++++++++++++++++++++
 4 files changed, 198 insertions(+)
create mode 100644 Documentation/hwmon/pli1209bc.rst create mode 100644 drivers/hwmon/pmbus/pli1209bc.c
Documentation/hwmon/pli1209bc.rst new file +12 -0
new file mode 100644
index 000000000000..a3f686d03cf2
@@ -0,0 +1,73 @@
+Kernel driver pli1209bc
+=======================
+
+Supported chips:
+
+  * Digital Supervisor PLI1209BC
+
+    Prefix: 'pli1209bc'
+
+    Addresses scanned: 0x50 - 0x5F
+
+    Datasheet:
https://www.vicorpower.com/documents/datasheets/ds-PLI1209BCxyzz-VICOR.pdf
Documentation/hwmon/pli1209bc.rst new file +3 -0
+
+Authors:
+    - Marcello Sylvester Bauer <[email protected]>

Quoted 8 lines

Quoted 6 lines
Documentation/hwmon/pli1209bc.rst new file +5 -0
+
+Description
+-----------
+
+The Vicor PLI1209BC is an isolated digital power system supervisor
thatprovides
that provides

ack.

Quoted 87 lines

+a communication interface between a host processor and one Bus Converter Module
+(BCM). The PLI communicates with a system controller via a PMBus compatible
+interface over an isolated UART interface. Through the PLI, the host processor

Documentation/hwmon/pli1209bc.rst new file +6 -0

+can configure, set protection limits, and monitor the BCM.
+
+Sysfs entries
+-------------
+
+=======================

========================================================

Documentation/hwmon/pli1209bc.rst new file +44 -0

+in1_label              "vin2"
+in1_input              Input voltage.
+in1_rated_min          Minimum rated input voltage.
+in1_rated_max          Maximum rated input voltage.
+in1_max                        Maximum input voltage.
+in1_max_alarm          Input voltage high alarm.
+in1_crit               Critical input voltage.
+in1_crit_alarm         Input voltage critical alarm.
+
+in2_label              "vout2"
+in2_input              Output voltage.
+in2_rated_min          Minimum rated output voltage.
+in2_rated_max          Maximum rated output voltage.
+in2_alarm              Output voltage alarm
+
+curr1_label            "iin2"
+curr1_input            Input current.
+curr1_max              Maximum input current.
+curr1_max_alarm                Maximum input current high alarm.
+curr1_crit             Critical input current.
+curr1_crit_alarm       Input current critical alarm.
+
+curr2_label            "iout2"
+curr2_input            Output current.
+curr2_crit             Critical output current.
+curr2_crit_alarm       Output current critical alarm.
+curr2_max              Maximum output current.
+curr2_max_alarm                Output current high alarm.
+
+power1_label           "pin2"
+power1_input           Input power.
+power1_alarm           Input power alarm.
+
+power2_label           "pout2"
+power2_input           Output power.
+power2_rated_max       Maximum rated output power.
+
+temp1_input            Die temperature.
+temp1_alarm            Die temperature alarm.
+temp1_max              Maximum die temperature.
+temp1_max_alarm                Die temperature high alarm.
+temp1_crit             Critical die temperature.
+temp1_crit_alarm       Die temperature critical alarm.
+=======================

========================================================

drivers/hwmon/pmbus/Kconfig +0 -0

index c96f7b7338bd..831db423bea0 100644
@@ -310,6 +310,15 @@ config SENSORS_PIM4328

          This driver can also be built as a module. If so, the module will
          be called pim4328.

+config SENSORS_PLI1209BC
+       tristate "Vicor PLI1209BC"
+       help
+         If you say yes here you get hardware monitoring support for Vicor
+         PLI1209BC Digital Supervisor.
+
+         This driver can also be built as a module. If so, the module will
+         be called pli1209bc.
+
config SENSORS_PM6764TR
        tristate "ST PM6764TR"
        help

drivers/hwmon/pmbus/Makefile +0 -1

index e5935f70c9e0..7ce74e3b8552 100644
--- a/drivers/hwmon/pmbus/Makefile

Quoted 8 lines

Quoted 6 lines
+++ b/drivers/hwmon/pmbus/Makefile
drivers/hwmon/pmbus/Makefile +0 -0
@@ -34,6 +34,7 @@ obj-$(CONFIG_SENSORS_MP2888)  += mp2888.o
obj-$(CONFIG_SENSORS_MP2975) += mp2975.o obj-$(CONFIG_SENSORS_MP5023) += mp5023.o obj-$(CONFIG_SENSORS_PM6764TR) += pm6764tr.o +obj-$(CONFIG_SENSORS_PLI1209BC) += pli1209bc.o
Alphabetic order please.

ack.

Thanks,
Marcello

Quoted 134 lines

obj-$(CONFIG_SENSORS_PXE1610) += pxe1610.o obj-$(CONFIG_SENSORS_Q54SJ108A2) += q54sj108a2.o obj-$(CONFIG_SENSORS_STPDDC60) += stpddc60.o

drivers/hwmon/pmbus/pli1209bc.c new file +3 -0

new file mode 100644
index 000000000000..5f8847307e55
@@ -0,0 +1,115 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Hardware monitoring driver for Vicor PLI1209BC Digital

drivers/hwmon/pmbus/pli1209bc.c new file +8 -0

+
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/pmbus.h>
+#include "pmbus.h"
+
+/*
+ * The capability command is only supported at page 0. Probing the

device while
+ * the page register is set to 1 will falsely enable PEC support. Disable
+ * capability probing accordingly, since the PLI1209BC does not have any
+ * additional capabilities.
+ */

drivers/hwmon/pmbus/pli1209bc.c new file +5 -0

+static struct pmbus_platform_data pli1209bc_plat_data = {
+       .flags = PMBUS_NO_CAPABILITY,
+};
+
+static int pli1209bc_read_word_data(struct i2c_client *client, int

page,
+ int phase, int reg)

drivers/hwmon/pmbus/pli1209bc.c new file +7 -0

+{
+       int data;
+
+       switch (reg) {
+       /* PMBUS_READ_POUT uses a direct format with R=0 */
+       case PMBUS_READ_POUT:
+               data = pmbus_read_word_data(client, page, phase,

reg);
+               if (data < 0)
+                       return data;
+               data = sign_extend32(data, 15) * 10; +               return clamp_val(data, -32768, 32767) & 0xffff; +       default:
+               return -ENODATA;
+       }

drivers/hwmon/pmbus/pli1209bc.c new file +31 -0

+}
+
+static struct pmbus_driver_info pli1209bc_info = {
+       .pages = 2,
+       .format[PSC_VOLTAGE_IN] = direct,
+       .format[PSC_VOLTAGE_OUT] = direct,
+       .format[PSC_CURRENT_IN] = direct,
+       .format[PSC_CURRENT_OUT] = direct,
+       .format[PSC_POWER] = direct,
+       .format[PSC_TEMPERATURE] = direct,
+       .m[PSC_VOLTAGE_IN] = 1,
+       .b[PSC_VOLTAGE_IN] = 0,
+       .R[PSC_VOLTAGE_IN] = 1,
+       .m[PSC_VOLTAGE_OUT] = 1,
+       .b[PSC_VOLTAGE_OUT] = 0,
+       .R[PSC_VOLTAGE_OUT] = 1,
+       .m[PSC_CURRENT_IN] = 1,
+       .b[PSC_CURRENT_IN] = 0,
+       .R[PSC_CURRENT_IN] = 3,
+       .m[PSC_CURRENT_OUT] = 1,
+       .b[PSC_CURRENT_OUT] = 0,
+       .R[PSC_CURRENT_OUT] = 2,
+       .m[PSC_POWER] = 1,
+       .b[PSC_POWER] = 0,
+       .R[PSC_POWER] = 1,
+       .m[PSC_TEMPERATURE] = 1,
+       .b[PSC_TEMPERATURE] = 0,
+       .R[PSC_TEMPERATURE] = 0,
+       /*
+        * Page 0 sums up all attributes except voltage readings.
+        * The pli1209 digital supervisor only contains a single

BCM, making
+        * page 0 redundant.
+        */
+       .func[1] = PMBUS_HAVE_VIN | PMBUS_HAVE_VOUT

+           | PMBUS_HAVE_IIN | PMBUS_HAVE_IOUT
+           | PMBUS_HAVE_PIN | PMBUS_HAVE_POUT
+           | PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP
+           | PMBUS_HAVE_STATUS_IOUT | PMBUS_HAVE_STATUS_INPUT,

+ .read_word_data = pli1209bc_read_word_data,

drivers/hwmon/pmbus/pli1209bc.c new file +27 -0

+};
+
+static int pli1209bc_probe(struct i2c_client *client)
+{
+       client->dev.platform_data = &pli1209bc_plat_data;
+       return pmbus_do_probe(client, &pli1209bc_info);
+}
+
+static const struct i2c_device_id pli1209bc_id[] = {
+       {"pli1209bc", 0},
+       {}
+};
+
+MODULE_DEVICE_TABLE(i2c, pli1209bc_id);
+
+#ifdef CONFIG_OF
+static const struct of_device_id pli1209bc_of_match[] = {
+       { .compatible = "vicor,pli1209bc" },
+       { },
+};
+MODULE_DEVICE_TABLE(of, pli1209bc_of_match);
+#endif
+
+static struct i2c_driver pli1209bc_driver = {
+       .driver = {
+                  .name = "pli1209bc",
+                  .of_match_table =

of_match_ptr(pli1209bc_of_match),
+                  },
+       .probe_new = pli1209bc_probe,
+       .id_table = pli1209bc_id,

drivers/hwmon/pmbus/pli1209bc.c new file +8 -0

+};
+
+module_i2c_driver(pli1209bc_driver);
+
+MODULE_AUTHOR("Marcello Sylvester Bauer <[email protected]>");
+MODULE_DESCRIPTION("PMBus driver for Vicor PLI1209BC");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(PMBUS);