hwmon: (pmbus/max34440) Add support for ADPM12160

ADPM12160 is a quarter brick DC/DC Power Module. It is a high power
non-isolated converter capable of delivering a fully regulated 12V,
with continuous power level of 1600W with peak power at 2400W for
a limited time. Uses PMBus Configuration.

Signed-off-by: Alexis Czezar Torreno <alexisczezar.torreno@analog.com>
Link: https://lore.kernel.org/r/20250407-dev_adpm12160-v3-2-9cd3095445c8@analog.com
[groeck: The chip is "ADPM12160"]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

diff --git a/Documentation/hwmon/max34440.rst b/Documentation/hwmon/max34440.rst
index 162d289f08140341e8e76ab7033834ba07a8b935..8591a7152ce580a04b6965301f9bacd9b0a1a661 100644 (file)
--- a/Documentation/hwmon/max34440.rst
+++ b/Documentation/hwmon/max34440.rst
@@ -3,6 +3,14 @@ Kernel driver max34440
 
 Supported chips:
 
+  * ADI ADPM12160
+
+    Prefixes: 'adpm12160'
+
+    Addresses scanned: -
+
+    Datasheet: -
+
   * Maxim MAX34440
 
     Prefixes: 'max34440'
@@ -67,13 +75,14 @@ Author: Guenter Roeck <linux@roeck-us.net>
 Description
 -----------
 
-This driver supports hardware monitoring for Maxim MAX34440 PMBus 6-Channel
-Power-Supply Manager, MAX34441 PMBus 5-Channel Power-Supply Manager
-and Intelligent Fan Controller, and MAX34446 PMBus Power-Supply Data Logger.
-It also supports the MAX34451, MAX34460, and MAX34461 PMBus Voltage Monitor &
-Sequencers. The MAX34451 supports monitoring voltage or current of 12 channels
-based on GIN pins. The MAX34460 supports 12 voltage channels, and the MAX34461
-supports 16 voltage channels.
+This driver supports multiple devices: hardware monitoring for Maxim MAX34440
+PMBus 6-Channel Power-Supply Manager, MAX34441 PMBus 5-Channel Power-Supply
+Manager and Intelligent Fan Controller, and MAX34446 PMBus Power-Supply Data
+Logger; PMBus Voltage Monitor and Sequencers for MAX34451, MAX34460, and
+MAX34461; PMBus DC/DC Power Module ADPM12160. The MAX34451 supports monitoring
+voltage or current of 12 channels based on GIN pins. The MAX34460 supports 12
+voltage channels, and the MAX34461 supports 16 voltage channels. The ADPM1260
+also monitors both input and output of voltage and current.
 
 The driver is a client driver to the core PMBus driver. Please see
 Documentation/hwmon/pmbus.rst for details on PMBus client drivers.
@@ -128,7 +137,10 @@ in[1-6]_highest            Historical maximum voltage.
 in[1-6]_reset_history  Write any value to reset history.
 ======================= =======================================================
 
-.. note:: MAX34446 only supports in[1-4].
+.. note::
+
+    - MAX34446 only supports in[1-4].
+    - ADPM12160 only supports in[1-2]. Label is "vin1" and "vout1" respectively.
 
 Curr
 ~~~~
@@ -150,6 +162,7 @@ curr[1-6]_reset_history     Write any value to reset history.
 
     - in6 and curr6 attributes only exist for MAX34440.
     - MAX34446 only supports curr[1-4].
+    - For ADPM12160, curr[1] is "iin1" and curr[2-6] are "iout[1-5].
 
 Power
 ~~~~~
@@ -185,6 +198,7 @@ temp[1-8]_reset_history     Write any value to reset history.
 .. note::
    - temp7 and temp8 attributes only exist for MAX34440.
    - MAX34446 only supports temp[1-3].
+   - ADPM12160 only supports temp[1].
 
 
 .. note::

diff --git a/drivers/hwmon/pmbus/max34440.c b/drivers/hwmon/pmbus/max34440.c
index d6d556b0138532f0a55ffe73eae760cf41aa4ab8..3d70c454efb50ac0def27b4214e0c26d2786f349 100644 (file)
--- a/drivers/hwmon/pmbus/max34440.c
+++ b/drivers/hwmon/pmbus/max34440.c
@@ -14,7 +14,15 @@
 #include <linux/i2c.h>
 #include "pmbus.h"
 
-enum chips { max34440, max34441, max34446, max34451, max34460, max34461 };
+enum chips {
+       adpm12160,
+       max34440,
+       max34441,
+       max34446,
+       max34451,
+       max34460,
+       max34461,
+};
 
 #define MAX34440_MFR_VOUT_PEAK         0xd4
 #define MAX34440_MFR_IOUT_PEAK         0xd5
@@ -80,7 +88,8 @@ static int max34440_read_word_data(struct i2c_client *client, int page,
                                           MAX34440_MFR_VOUT_PEAK);
                break;
        case PMBUS_VIRT_READ_IOUT_AVG:
-               if (data->id != max34446 && data->id != max34451)
+               if (data->id != max34446 && data->id != max34451 &&
+                   data->id != adpm12160)
                        return -ENXIO;
                ret = pmbus_read_word_data(client, page, phase,
                                           MAX34446_MFR_IOUT_AVG);
@@ -164,7 +173,8 @@ static int max34440_write_word_data(struct i2c_client *client, int page,
        case PMBUS_VIRT_RESET_IOUT_HISTORY:
                ret = pmbus_write_word_data(client, page,
                                            MAX34440_MFR_IOUT_PEAK, 0);
-               if (!ret && (data->id == max34446 || data->id == max34451))
+               if (!ret && (data->id == max34446 || data->id == max34451 ||
+                            data->id == adpm12160))
                        ret = pmbus_write_word_data(client, page,
                                        MAX34446_MFR_IOUT_AVG, 0);
 
@@ -309,6 +319,41 @@ static int max34451_set_supported_funcs(struct i2c_client *client,
 }
 
 static struct pmbus_driver_info max34440_info[] = {
+       [adpm12160] = {
+               .pages = 19,
+               .format[PSC_VOLTAGE_IN] = direct,
+               .format[PSC_VOLTAGE_OUT] = direct,
+               .format[PSC_CURRENT_IN] = direct,
+               .format[PSC_CURRENT_OUT] = direct,
+               .format[PSC_TEMPERATURE] = direct,
+               .m[PSC_VOLTAGE_IN] = 1,
+               .b[PSC_VOLTAGE_IN] = 0,
+               .R[PSC_VOLTAGE_IN] = 0,
+               .m[PSC_VOLTAGE_OUT] = 1,
+               .b[PSC_VOLTAGE_OUT] = 0,
+               .R[PSC_VOLTAGE_OUT] = 0,
+               .m[PSC_CURRENT_IN] = 1,
+               .b[PSC_CURRENT_IN] = 0,
+               .R[PSC_CURRENT_IN] = 2,
+               .m[PSC_CURRENT_OUT] = 1,
+               .b[PSC_CURRENT_OUT] = 0,
+               .R[PSC_CURRENT_OUT] = 2,
+               .m[PSC_TEMPERATURE] = 1,
+               .b[PSC_TEMPERATURE] = 0,
+               .R[PSC_TEMPERATURE] = 2,
+               /* absent func below [18] are not for monitoring */
+               .func[2] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT,
+               .func[4] = PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
+               .func[5] = PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
+               .func[6] = PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
+               .func[7] = PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
+               .func[8] = PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT,
+               .func[9] = PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT,
+               .func[10] = PMBUS_HAVE_IIN | PMBUS_HAVE_STATUS_INPUT,
+               .func[18] = PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP,
+               .read_word_data = max34440_read_word_data,
+               .write_word_data = max34440_write_word_data,
+       },
        [max34440] = {
                .pages = 14,
                .format[PSC_VOLTAGE_IN] = direct,
@@ -539,12 +584,16 @@ static int max34440_probe(struct i2c_client *client)
                rv = max34451_set_supported_funcs(client, data);
                if (rv)
                        return rv;
+       } else if (data->id == adpm12160) {
+               data->iout_oc_fault_limit = PMBUS_IOUT_OC_FAULT_LIMIT;
+               data->iout_oc_warn_limit = PMBUS_IOUT_OC_WARN_LIMIT;
        }
 
        return pmbus_do_probe(client, &data->info);
 }
 
 static const struct i2c_device_id max34440_id[] = {
+       {"adpm12160", adpm12160},
        {"max34440", max34440},
        {"max34441", max34441},
        {"max34446", max34446},